aboutsummaryrefslogtreecommitdiffstats
path: root/usb
diff options
context:
space:
mode:
authorGreg Kroah-Hartman <gregkh@suse.de>2006-01-17 16:24:56 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2006-01-17 16:24:56 -0800
commitf798688c84f02fc1a9906c55e0df434125c6f5a7 (patch)
tree5a315d8d4123aba5e166f6357243133de84d74a6 /usb
parentd59834c175c575a67ac84f03777ea6bd35815022 (diff)
downloadpatches-f798688c84f02fc1a9906c55e0df434125c6f5a7.tar.gz
deleted patches that have already been applied
Diffstat (limited to 'usb')
-rw-r--r--usb/usb-remove-usb_audio-and-usb_midi-drivers.patch6409
1 files changed, 0 insertions, 6409 deletions
diff --git a/usb/usb-remove-usb_audio-and-usb_midi-drivers.patch b/usb/usb-remove-usb_audio-and-usb_midi-drivers.patch
deleted file mode 100644
index cff9406ca6004..0000000000000
--- a/usb/usb-remove-usb_audio-and-usb_midi-drivers.patch
+++ /dev/null
@@ -1,6409 +0,0 @@
-From bunk@stusta.de Tue Nov 8 13:17:46 2005
-Date: Tue, 8 Nov 2005 21:03:42 +0100
-From: Adrian Bunk <bunk@stusta.de>
-To: Greg KH <gregkh@suse.de>
-Subject: USB: remove USB_AUDIO and USB_MIDI drivers
-Message-ID: <20051108200342.GE3847@stusta.de>
-Content-Disposition: inline
-
-Since I've gotten exactly zero negative feedback, this patch removes the
-obsolete USB_AUDIO and USB_MIDI drivers.
-
-
-Signed-off-by: Adrian Bunk <bunk@stusta.de>
-Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-
----
- drivers/usb/Makefile | 2
- drivers/usb/class/Kconfig | 47
- drivers/usb/class/Makefile | 2
- drivers/usb/class/audio.c | 3869 -------------------------------------------
- drivers/usb/class/audio.h | 110 -
- drivers/usb/class/usb-midi.c | 2153 -----------------------
- drivers/usb/class/usb-midi.h | 164 -
- 7 files changed, 6347 deletions(-)
-
---- gregkh-2.6.orig/drivers/usb/class/Kconfig
-+++ gregkh-2.6/drivers/usb/class/Kconfig
-@@ -4,53 +4,6 @@
- comment "USB Device Class drivers"
- depends on USB
-
--config OBSOLETE_OSS_USB_DRIVER
-- bool "Obsolete OSS USB drivers"
-- depends on USB && SOUND
-- help
-- This option enables support for the obsolete USB Audio and Midi
-- drivers that are scheduled for removal in the near future since
-- there are ALSA drivers for the same hardware.
--
-- Please contact Adrian Bunk <bunk@stusta.de> if you had to
-- say Y here because of missing support in the ALSA drivers.
--
-- If unsure, say N.
--
--config USB_AUDIO
-- tristate "USB Audio support"
-- depends on USB && SOUND && OBSOLETE_OSS_USB_DRIVER
-- help
-- Say Y here if you want to connect USB audio equipment such as
-- speakers to your computer's USB port. You only need this if you use
-- the OSS sound driver; ALSA has its own option for usb audio support.
--
-- To compile this driver as a module, choose M here: the
-- module will be called audio.
--
--config USB_MIDI
-- tristate "USB MIDI support"
-- depends on USB && SOUND && OBSOLETE_OSS_USB_DRIVER
-- ---help---
-- Say Y here if you want to connect a USB MIDI device to your
-- computer's USB port. You only need this if you use the OSS
-- sound system; USB MIDI devices are supported by ALSA's USB
-- audio driver. This driver is for devices that comply with
-- 'Universal Serial Bus Device Class Definition for MIDI Device'.
--
-- The following devices are known to work:
-- * Steinberg USB2MIDI
-- * Roland MPU64
-- * Roland PC-300
-- * Roland SC8850
-- * Roland UM-1
-- * Roland UM-2
-- * Roland UA-100
-- * Yamaha MU1000
--
-- To compile this driver as a module, choose M here: the
-- module will be called usb-midi.
--
- config USB_ACM
- tristate "USB Modem (CDC ACM) support"
- depends on USB
---- gregkh-2.6.orig/drivers/usb/Makefile
-+++ gregkh-2.6/drivers/usb/Makefile
-@@ -17,8 +17,6 @@ obj-$(CONFIG_USB_SL811_HCD) += host/
- obj-$(CONFIG_ETRAX_USB_HOST) += host/
-
- obj-$(CONFIG_USB_ACM) += class/
--obj-$(CONFIG_USB_AUDIO) += class/
--obj-$(CONFIG_USB_MIDI) += class/
- obj-$(CONFIG_USB_PRINTER) += class/
-
- obj-$(CONFIG_USB_STORAGE) += storage/
---- gregkh-2.6.orig/drivers/usb/class/Makefile
-+++ gregkh-2.6/drivers/usb/class/Makefile
-@@ -4,6 +4,4 @@
- #
-
- obj-$(CONFIG_USB_ACM) += cdc-acm.o
--obj-$(CONFIG_USB_AUDIO) += audio.o
--obj-$(CONFIG_USB_MIDI) += usb-midi.o
- obj-$(CONFIG_USB_PRINTER) += usblp.o
---- gregkh-2.6.orig/drivers/usb/class/usb-midi.h
-+++ /dev/null
-@@ -1,164 +0,0 @@
--/*
-- usb-midi.h -- USB-MIDI driver
--
-- Copyright (C) 2001
-- NAGANO Daisuke <breeze.nagano@nifty.ne.jp>
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; either version 2, or (at your option)
-- any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-- */
--
--/* ------------------------------------------------------------------------- */
--
--#ifndef _USB_MIDI_H_
--#define _USB_MIDI_H_
--
--#ifndef USB_SUBCLASS_MIDISTREAMING
--#define USB_SUBCLASS_MIDISTREAMING 3
--#endif
--
--/* ------------------------------------------------------------------------- */
--/* Roland MIDI Devices */
--
--#define USB_VENDOR_ID_ROLAND 0x0582
--#define USBMIDI_ROLAND_UA100G 0x0000
--#define USBMIDI_ROLAND_MPU64 0x0002
--#define USBMIDI_ROLAND_SC8850 0x0003
--#define USBMIDI_ROLAND_SC8820 0x0007
--#define USBMIDI_ROLAND_UM2 0x0005
--#define USBMIDI_ROLAND_UM1 0x0009
--#define USBMIDI_ROLAND_PC300 0x0008
--
--/* YAMAHA MIDI Devices */
--#define USB_VENDOR_ID_YAMAHA 0x0499
--#define USBMIDI_YAMAHA_MU1000 0x1001
--
--/* Steinberg MIDI Devices */
--#define USB_VENDOR_ID_STEINBERG 0x0763
--#define USBMIDI_STEINBERG_USB2MIDI 0x1001
--
--/* Mark of the Unicorn MIDI Devices */
--#define USB_VENDOR_ID_MOTU 0x07fd
--#define USBMIDI_MOTU_FASTLANE 0x0001
--
--/* ------------------------------------------------------------------------- */
--/* Supported devices */
--
--struct usb_midi_endpoint {
-- int endpoint;
-- int cableId; /* if bit-n == 1 then cableId-n is enabled (n: 0 - 15) */
--};
--
--struct usb_midi_device {
-- char *deviceName;
--
-- u16 idVendor;
-- u16 idProduct;
-- int interface;
-- int altSetting; /* -1: auto detect */
--
-- struct usb_midi_endpoint in[15];
-- struct usb_midi_endpoint out[15];
--};
--
--static struct usb_midi_device usb_midi_devices[] = {
-- { /* Roland UM-1 */
-- "Roland UM-1",
-- USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UM1, 2, -1,
-- { { 0x81, 1 }, {-1, -1} },
-- { { 0x01, 1,}, {-1, -1} },
-- },
--
-- { /* Roland UM-2 */
-- "Roland UM-2" ,
-- USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UM2, 2, -1,
-- { { 0x81, 3 }, {-1, -1} },
-- { { 0x01, 3,}, {-1, -1} },
-- },
--
--/** Next entry courtesy research by Michael Minn <michael@michaelminn.com> **/
-- { /* Roland UA-100 */
-- "Roland UA-100",
-- USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UA100G, 2, -1,
-- { { 0x82, 7 }, {-1, -1} }, /** cables 0,1 and 2 for SYSEX **/
-- { { 0x02, 7 }, {-1, -1} },
-- },
--
--/** Next entry courtesy research by Michael Minn <michael@michaelminn.com> **/
-- { /* Roland SC8850 */
-- "Roland SC8850",
-- USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8850, 2, -1,
-- { { 0x81, 0x3f }, {-1, -1} },
-- { { 0x01, 0x3f }, {-1, -1} },
-- },
--
-- { /* Roland SC8820 */
-- "Roland SC8820",
-- USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8820, 2, -1,
-- { { 0x81, 0x13 }, {-1, -1} },
-- { { 0x01, 0x13 }, {-1, -1} },
-- },
--
-- { /* Roland SC8820 */
-- "Roland SC8820",
-- USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8820, 2, -1,
-- { { 0x81, 17 }, {-1, -1} },
-- { { 0x01, 17 }, {-1, -1} },
-- },
--
-- { /* YAMAHA MU1000 */
-- "YAMAHA MU1000",
-- USB_VENDOR_ID_YAMAHA, USBMIDI_YAMAHA_MU1000, 0, -1,
-- { { 0x81, 1 }, {-1, -1} },
-- { { 0x01, 15 }, {-1, -1} },
-- },
-- { /* Roland PC-300 */
-- "Roland PC-300",
-- USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_PC300, 2, -1,
-- { { 0x81, 1 }, {-1, -1} },
-- { { 0x01, 1 }, {-1, -1} },
-- },
-- { /* MOTU Fastlane USB */
-- "MOTU Fastlane USB",
-- USB_VENDOR_ID_MOTU, USBMIDI_MOTU_FASTLANE, 1, 0,
-- { { 0x82, 3 }, {-1, -1} },
-- { { 0x02, 3 }, {-1, -1} },
-- }
--};
--
--#define VENDOR_SPECIFIC_USB_MIDI_DEVICES (sizeof(usb_midi_devices)/sizeof(struct usb_midi_device))
--
--/* for Hot-Plugging */
--
--static struct usb_device_id usb_midi_ids [] = {
-- { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS),
-- .bInterfaceClass = USB_CLASS_AUDIO, .bInterfaceSubClass = USB_SUBCLASS_MIDISTREAMING},
-- { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UM1 ) },
-- { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UM2 ) },
-- { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UA100G ) },
-- { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_PC300 ) },
-- { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8850 ) },
-- { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8820 ) },
-- { USB_DEVICE( USB_VENDOR_ID_YAMAHA, USBMIDI_YAMAHA_MU1000 ) },
-- { USB_DEVICE( USB_VENDOR_ID_MOTU, USBMIDI_MOTU_FASTLANE ) },
--/* { USB_DEVICE( USB_VENDOR_ID_STEINBERG, USBMIDI_STEINBERG_USB2MIDI ) },*/
-- { } /* Terminating entry */
--};
--
--MODULE_DEVICE_TABLE (usb, usb_midi_ids);
--
--/* ------------------------------------------------------------------------- */
--#endif /* _USB_MIDI_H_ */
--
--
---- gregkh-2.6.orig/drivers/usb/class/usb-midi.c
-+++ /dev/null
-@@ -1,2153 +0,0 @@
--/*
-- usb-midi.c -- USB-MIDI driver
--
-- Copyright (C) 2001
-- NAGANO Daisuke <breeze.nagano@nifty.ne.jp>
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; either version 2, or (at your option)
-- any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
--
-- This driver is based on:
-- - 'Universal Serial Bus Device Class Definition for MIDI Device'
-- - linux/drivers/sound/es1371.c, linux/drivers/usb/audio.c
-- - alsa/lowlevel/pci/cs64xx.c
-- - umidi.c for NetBSD
-- */
--
--/* ------------------------------------------------------------------------- */
--
--
--#include <linux/module.h>
--#include <linux/kernel.h>
--#include <linux/sched.h>
--#include <linux/list.h>
--#include <linux/slab.h>
--#include <linux/usb.h>
--#include <linux/poll.h>
--#include <linux/sound.h>
--#include <linux/init.h>
--#include <asm/semaphore.h>
--
--#include "usb-midi.h"
--
--/* ------------------------------------------------------------------------- */
--
--/* More verbose on syslog */
--#undef MIDI_DEBUG
--
--#define MIDI_IN_BUFSIZ 1024
--
--#define HAVE_SUPPORT_USB_MIDI_CLASS
--
--#undef HAVE_SUPPORT_ALSA
--
--/* ------------------------------------------------------------------------- */
--
--static int singlebyte = 0;
--module_param(singlebyte, int, 0);
--MODULE_PARM_DESC(singlebyte,"Enable sending MIDI messages with single message packet");
--
--static int maxdevices = 4;
--module_param(maxdevices, int, 0);
--MODULE_PARM_DESC(maxdevices,"Max number of allocatable MIDI device");
--
--static int uvendor = -1;
--module_param(uvendor, int, 0);
--MODULE_PARM_DESC(uvendor, "The USB Vendor ID of a semi-compliant interface");
--
--static int uproduct = -1;
--module_param(uproduct, int, 0);
--MODULE_PARM_DESC(uproduct, "The USB Product ID of a semi-compliant interface");
--
--static int uinterface = -1;
--module_param(uinterface, int, 0);
--MODULE_PARM_DESC(uinterface, "The Interface number of a semi-compliant interface");
--
--static int ualt = -1;
--module_param(ualt, int, 0);
--MODULE_PARM_DESC(ualt, "The optional alternative setting of a semi-compliant interface");
--
--static int umin = -1;
--module_param(umin, int, 0);
--MODULE_PARM_DESC(umin, "The input endpoint of a semi-compliant interface");
--
--static int umout = -1;
--module_param(umout, int, 0);
--MODULE_PARM_DESC(umout, "The output endpoint of a semi-compliant interface");
--
--static int ucable = -1;
--module_param(ucable, int, 0);
--MODULE_PARM_DESC(ucable, "The cable number used for a semi-compliant interface");
--
--/** Note -- the usb_string() returns only Latin-1 characters.
-- * (unicode chars <= 255). To support Japanese, a unicode16LE-to-EUC or
-- * unicode16LE-to-JIS routine is needed to wrap around usb_get_string().
-- **/
--static unsigned short ulangid = 0x0409; /** 0x0411 for Japanese **/
--module_param(ulangid, ushort, 0);
--MODULE_PARM_DESC(ulangid, "The optional preferred USB Language ID for all devices");
--
--MODULE_AUTHOR("NAGANO Daisuke <breeze.nagano@nifty.ne.jp>");
--MODULE_DESCRIPTION("USB-MIDI driver");
--MODULE_LICENSE("GPL");
--
--/* ------------------------------------------------------------------------- */
--
--/** MIDIStreaming Class-Specific Interface Descriptor Subtypes **/
--
--#define MS_DESCRIPTOR_UNDEFINED 0
--#define MS_HEADER 1
--#define MIDI_IN_JACK 2
--#define MIDI_OUT_JACK 3
--/* Spec reads: ELEMENT */
--#define ELEMENT_DESCRIPTOR 4
--
--#define MS_HEADER_LENGTH 7
--
--/** MIDIStreaming Class-Specific Endpoint Descriptor Subtypes **/
--
--#define DESCRIPTOR_UNDEFINED 0
--/* Spec reads: MS_GENERAL */
--#define MS_GENERAL_ENDPOINT 1
--
--/** MIDIStreaming MIDI IN and OUT Jack Types **/
--
--#define JACK_TYPE_UNDEFINED 0
--/* Spec reads: EMBEDDED */
--#define EMBEDDED_JACK 1
--/* Spec reads: EXTERNAL */
--#define EXTERNAL_JACK 2
--
--
--/* structure summary
--
-- usb_midi_state usb_device
-- | |
-- *| *| per ep
-- in_ep out_ep
-- | |
-- *| *| per cable
-- min mout
-- | | (cable to device pairing magic)
-- | |
-- usb_midi_dev dev_id (major,minor) == file->private_data
--
--*/
--
--/* usb_midi_state: corresponds to a USB-MIDI module */
--struct usb_midi_state {
-- struct list_head mididev;
--
-- struct usb_device *usbdev;
--
-- struct list_head midiDevList;
-- struct list_head inEndpointList;
-- struct list_head outEndpointList;
--
-- spinlock_t lock;
--
-- unsigned int count; /* usage counter */
--};
--
--/* midi_out_endpoint: corresponds to an output endpoint */
--struct midi_out_endpoint {
-- struct list_head list;
--
-- struct usb_device *usbdev;
-- int endpoint;
-- spinlock_t lock;
-- wait_queue_head_t wait;
--
-- unsigned char *buf;
-- int bufWrPtr;
-- int bufSize;
--
-- struct urb *urb;
--};
--
--/* midi_in_endpoint: corresponds to an input endpoint */
--struct midi_in_endpoint {
-- struct list_head list;
--
-- struct usb_device *usbdev;
-- int endpoint;
-- spinlock_t lock;
-- wait_queue_head_t wait;
--
-- struct usb_mididev *cables[16]; // cables open for read
-- int readers; // number of cables open for read
--
-- struct urb *urb;
-- unsigned char *recvBuf;
-- int recvBufSize;
-- int urbSubmitted; //FIXME: == readers > 0
--};
--
--/* usb_mididev: corresponds to a logical device */
--struct usb_mididev {
-- struct list_head list;
--
-- struct usb_midi_state *midi;
-- int dev_midi;
-- mode_t open_mode;
--
-- struct {
-- struct midi_in_endpoint *ep;
-- int cableId;
--
--// as we are pushing data from usb_bulk_read to usb_midi_read,
--// we need a larger, cyclic buffer here.
-- unsigned char buf[MIDI_IN_BUFSIZ];
-- int bufRdPtr;
-- int bufWrPtr;
-- int bufRemains;
-- } min;
--
-- struct {
-- struct midi_out_endpoint *ep;
-- int cableId;
--
-- unsigned char buf[3];
-- int bufPtr;
-- int bufRemains;
--
-- int isInExclusive;
-- unsigned char lastEvent;
-- } mout;
--
-- int singlebyte;
--};
--
--/** Map the high nybble of MIDI voice messages to number of Message bytes.
-- * High nyble ranges from 0x8 to 0xe
-- */
--
--static int remains_80e0[] = {
-- 3, /** 0x8X Note Off **/
-- 3, /** 0x9X Note On **/
-- 3, /** 0xAX Poly-key pressure **/
-- 3, /** 0xBX Control Change **/
-- 2, /** 0xCX Program Change **/
-- 2, /** 0xDX Channel pressure **/
-- 3 /** 0xEX PitchBend Change **/
--};
--
--/** Map the messages to a number of Message bytes.
-- *
-- **/
--static int remains_f0f6[] = {
-- 0, /** 0xF0 **/
-- 2, /** 0XF1 **/
-- 3, /** 0XF2 **/
-- 2, /** 0XF3 **/
-- 2, /** 0XF4 (Undefined by MIDI Spec, and subject to change) **/
-- 2, /** 0XF5 (Undefined by MIDI Spec, and subject to change) **/
-- 1 /** 0XF6 **/
--};
--
--/** Map the messages to a CIN (Code Index Number).
-- *
-- **/
--static int cin_f0ff[] = {
-- 4, /** 0xF0 System Exclusive Message Start (special cases may be 6 or 7) */
-- 2, /** 0xF1 **/
-- 3, /** 0xF2 **/
-- 2, /** 0xF3 **/
-- 2, /** 0xF4 **/
-- 2, /** 0xF5 **/
-- 5, /** 0xF6 **/
-- 5, /** 0xF7 End of System Exclusive Message (May be 6 or 7) **/
-- 5, /** 0xF8 **/
-- 5, /** 0xF9 **/
-- 5, /** 0xFA **/
-- 5, /** 0xFB **/
-- 5, /** 0xFC **/
-- 5, /** 0xFD **/
-- 5, /** 0xFE **/
-- 5 /** 0xFF **/
--};
--
--/** Map MIDIStreaming Event packet Code Index Number (low nybble of byte 0)
-- * to the number of bytes of valid MIDI data.
-- *
-- * CIN of 0 and 1 are NOT USED in MIDIStreaming 1.0.
-- *
-- **/
--static int cin_to_len[] = {
-- 0, 0, 2, 3,
-- 3, 1, 2, 3,
-- 3, 3, 3, 3,
-- 2, 2, 3, 1
--};
--
--
--/* ------------------------------------------------------------------------- */
--
--static struct list_head mididevs = LIST_HEAD_INIT(mididevs);
--
--static DECLARE_MUTEX(open_sem);
--static DECLARE_WAIT_QUEUE_HEAD(open_wait);
--
--
--/* ------------------------------------------------------------------------- */
--
--static void usb_write_callback(struct urb *urb, struct pt_regs *regs)
--{
-- struct midi_out_endpoint *ep = (struct midi_out_endpoint *)urb->context;
--
-- if ( waitqueue_active( &ep->wait ) )
-- wake_up_interruptible( &ep->wait );
--}
--
--
--static int usb_write( struct midi_out_endpoint *ep, unsigned char *buf, int len )
--{
-- struct usb_device *d;
-- int pipe;
-- int ret = 0;
-- int status;
-- int maxretry = 50;
--
-- DECLARE_WAITQUEUE(wait,current);
-- init_waitqueue_head(&ep->wait);
--
-- d = ep->usbdev;
-- pipe = usb_sndbulkpipe(d, ep->endpoint);
-- usb_fill_bulk_urb( ep->urb, d, pipe, (unsigned char*)buf, len,
-- usb_write_callback, ep );
--
-- status = usb_submit_urb(ep->urb, GFP_KERNEL);
--
-- if (status) {
-- printk(KERN_ERR "usbmidi: Cannot submit urb (%d)\n",status);
-- ret = -EIO;
-- goto error;
-- }
--
-- add_wait_queue( &ep->wait, &wait );
-- set_current_state( TASK_INTERRUPTIBLE );
--
-- while( ep->urb->status == -EINPROGRESS ) {
-- if ( maxretry-- < 0 ) {
-- printk(KERN_ERR "usbmidi: usb_bulk_msg timed out\n");
-- ret = -ETIME;
-- break;
-- }
-- interruptible_sleep_on_timeout( &ep->wait, 10 );
-- }
-- set_current_state( TASK_RUNNING );
-- remove_wait_queue( &ep->wait, &wait );
--
--error:
-- return ret;
--}
--
--
--/** Copy data from URB to In endpoint buf.
-- * Discard if CIN == 0 or CIN = 1.
-- *
-- *
-- **/
--
--static void usb_bulk_read(struct urb *urb, struct pt_regs *regs)
--{
-- struct midi_in_endpoint *ep = (struct midi_in_endpoint *)(urb->context);
-- unsigned char *data = urb->transfer_buffer;
-- int i, j, wake;
--
-- if ( !ep->urbSubmitted ) {
-- return;
-- }
--
-- if ( (urb->status == 0) && (urb->actual_length > 0) ) {
-- wake = 0;
-- spin_lock( &ep->lock );
--
-- for(j = 0; j < urb->actual_length; j += 4) {
-- int cin = (data[j]>>0)&0xf;
-- int cab = (data[j]>>4)&0xf;
-- struct usb_mididev *cable = ep->cables[cab];
-- if ( cable ) {
-- int len = cin_to_len[cin]; /** length of MIDI data **/
-- for (i = 0; i < len; i++) {
-- cable->min.buf[cable->min.bufWrPtr] = data[1+i+j];
-- cable->min.bufWrPtr = (cable->min.bufWrPtr+1)%MIDI_IN_BUFSIZ;
-- if (cable->min.bufRemains < MIDI_IN_BUFSIZ)
-- cable->min.bufRemains += 1;
-- else /** need to drop data **/
-- cable->min.bufRdPtr += (cable->min.bufRdPtr+1)%MIDI_IN_BUFSIZ;
-- wake = 1;
-- }
-- }
-- }
--
-- spin_unlock ( &ep->lock );
-- if ( wake ) {
-- wake_up( &ep->wait );
-- }
-- }
--
-- /* urb->dev must be reinitialized on 2.4.x kernels */
-- urb->dev = ep->usbdev;
--
-- urb->actual_length = 0;
-- usb_submit_urb(urb, GFP_ATOMIC);
--}
--
--
--
--/* ------------------------------------------------------------------------- */
--
--/* This routine must be called with spin_lock */
--
--/** Wrapper around usb_write().
-- * This routine must be called with spin_lock held on ep.
-- * Called by midiWrite(), putOneMidiEvent(), and usb_midi_write();
-- **/
--static int flush_midi_buffer( struct midi_out_endpoint *ep )
--{
-- int ret=0;
--
-- if ( ep->bufWrPtr > 0 ) {
-- ret = usb_write( ep, ep->buf, ep->bufWrPtr );
-- ep->bufWrPtr = 0;
-- }
--
-- return ret;
--}
--
--
--/* ------------------------------------------------------------------------- */
--
--
--/** Given a MIDI Event, determine size of data to be attached to
-- * USB-MIDI packet.
-- * Returns 1, 2 or 3.
-- * Called by midiWrite();
-- * Uses remains_80e0 and remains_f0f6;
-- **/
--static int get_remains(int event)
--{
-- int ret;
--
-- if ( event < 0x80 ) {
-- ret = 1;
-- } else if ( event < 0xf0 ) {
-- ret = remains_80e0[((event-0x80)>>4)&0x0f];
-- } else if ( event < 0xf7 ) {
-- ret = remains_f0f6[event-0xf0];
-- } else {
-- ret = 1;
-- }
--
-- return ret;
--}
--
--/** Given the output MIDI data in the output buffer, computes a reasonable
-- * CIN.
-- * Called by putOneMidiEvent().
-- **/
--static int get_CIN( struct usb_mididev *m )
--{
-- int cin;
--
-- if ( m->mout.buf[0] == 0xf7 ) {
-- cin = 5;
-- }
-- else if ( m->mout.buf[1] == 0xf7 ) {
-- cin = 6;
-- }
-- else if ( m->mout.buf[2] == 0xf7 ) {
-- cin = 7;
-- }
-- else {
-- if ( m->mout.isInExclusive == 1 ) {
-- cin = 4;
-- } else if ( m->mout.buf[0] < 0x80 ) {
-- /** One byte that we know nothing about. **/
-- cin = 0xF;
-- } else if ( m->mout.buf[0] < 0xf0 ) {
-- /** MIDI Voice messages 0x8X to 0xEX map to cin 0x8 to 0xE. **/
-- cin = (m->mout.buf[0]>>4)&0x0f;
-- }
-- else {
-- /** Special lookup table exists for real-time events. **/
-- cin = cin_f0ff[m->mout.buf[0]-0xf0];
-- }
-- }
--
-- return cin;
--}
--
--
--/* ------------------------------------------------------------------------- */
--
--
--
--/** Move data to USB endpoint buffer.
-- *
-- **/
--static int put_one_midi_event(struct usb_mididev *m)
--{
-- int cin;
-- unsigned long flags;
-- struct midi_out_endpoint *ep = m->mout.ep;
-- int ret=0;
--
-- cin = get_CIN( m );
-- if ( cin > 0x0f || cin < 0 ) {
-- return -EINVAL;
-- }
--
-- spin_lock_irqsave( &ep->lock, flags );
-- ep->buf[ep->bufWrPtr++] = (m->mout.cableId<<4) | cin;
-- ep->buf[ep->bufWrPtr++] = m->mout.buf[0];
-- ep->buf[ep->bufWrPtr++] = m->mout.buf[1];
-- ep->buf[ep->bufWrPtr++] = m->mout.buf[2];
-- if ( ep->bufWrPtr >= ep->bufSize ) {
-- ret = flush_midi_buffer( ep );
-- }
-- spin_unlock_irqrestore( &ep->lock, flags);
--
-- m->mout.buf[0] = m->mout.buf[1] = m->mout.buf[2] = 0;
-- m->mout.bufPtr = 0;
--
-- return ret;
--}
--
--/** Write the MIDI message v on the midi device.
-- * Called by usb_midi_write();
-- * Responsible for packaging a MIDI data stream into USB-MIDI packets.
-- **/
--
--static int midi_write( struct usb_mididev *m, int v )
--{
-- unsigned long flags;
-- struct midi_out_endpoint *ep = m->mout.ep;
-- int ret=0;
-- unsigned char c = (unsigned char)v;
-- unsigned char sysrt_buf[4];
--
-- if ( m->singlebyte != 0 ) {
-- /** Simple code to handle the single-byte USB-MIDI protocol. */
-- spin_lock_irqsave( &ep->lock, flags );
-- if ( ep->bufWrPtr+4 > ep->bufSize ) {
-- ret = flush_midi_buffer( ep );
-- if ( !ret ) {
-- spin_unlock_irqrestore( &ep->lock, flags );
-- return ret;
-- }
-- }
-- ep->buf[ep->bufWrPtr++] = (m->mout.cableId<<4) | 0x0f; /* single byte */
-- ep->buf[ep->bufWrPtr++] = c;
-- ep->buf[ep->bufWrPtr++] = 0;
-- ep->buf[ep->bufWrPtr++] = 0;
-- if ( ep->bufWrPtr >= ep->bufSize ) {
-- ret = flush_midi_buffer( ep );
-- }
-- spin_unlock_irqrestore( &ep->lock, flags );
--
-- return ret;
-- }
-- /** Normal USB-MIDI protocol begins here. */
--
-- if ( c > 0xf7 ) { /* system: Realtime messages */
-- /** Realtime messages are written IMMEDIATELY. */
-- sysrt_buf[0] = (m->mout.cableId<<4) | 0x0f;
-- sysrt_buf[1] = c;
-- sysrt_buf[2] = 0;
-- sysrt_buf[3] = 0;
-- spin_lock_irqsave( &ep->lock, flags );
-- ret = usb_write( ep, sysrt_buf, 4 );
-- spin_unlock_irqrestore( &ep->lock, flags );
-- /* m->mout.lastEvent = 0; */
--
-- return ret;
-- }
--
-- if ( c >= 0x80 ) {
-- if ( c < 0xf0 ) {
-- m->mout.lastEvent = c;
-- m->mout.isInExclusive = 0;
-- m->mout.bufRemains = get_remains(c);
-- } else if ( c == 0xf0 ) {
-- /* m->mout.lastEvent = 0; */
-- m->mout.isInExclusive = 1;
-- m->mout.bufRemains = get_remains(c);
-- } else if ( c == 0xf7 && m->mout.isInExclusive == 1 ) {
-- /* m->mout.lastEvent = 0; */
-- m->mout.isInExclusive = 0;
-- m->mout.bufRemains = 1;
-- } else if ( c > 0xf0 ) {
-- /* m->mout.lastEvent = 0; */
-- m->mout.isInExclusive = 0;
-- m->mout.bufRemains = get_remains(c);
-- }
--
-- } else if ( m->mout.bufRemains == 0 && m->mout.isInExclusive == 0 ) {
-- if ( m->mout.lastEvent == 0 ) {
-- return 0; /* discard, waiting for the first event */
-- }
-- /** track status **/
-- m->mout.buf[0] = m->mout.lastEvent;
-- m->mout.bufPtr = 1;
-- m->mout.bufRemains = get_remains(m->mout.lastEvent)-1;
-- }
--
-- m->mout.buf[m->mout.bufPtr++] = c;
-- m->mout.bufRemains--;
-- if ( m->mout.bufRemains == 0 || m->mout.bufPtr >= 3) {
-- ret = put_one_midi_event(m);
-- }
--
-- return ret;
--}
--
--
--/* ------------------------------------------------------------------------- */
--
--/** Basic operation on /dev/midiXX as registered through struct file_operations.
-- *
-- * Basic contract: Used to change the current read/write position in a file.
-- * On success, the non-negative position is reported.
-- * On failure, the negative of an error code is reported.
-- *
-- * Because a MIDIStream is not a file, all seek operations are doomed to fail.
-- *
-- **/
--static loff_t usb_midi_llseek(struct file *file, loff_t offset, int origin)
--{
-- /** Tell user you cannot seek on a PIPE-like device. **/
-- return -ESPIPE;
--}
--
--
--/** Basic operation on /dev/midiXX as registered through struct file_operations.
-- *
-- * Basic contract: Block until count bytes have been read or an error occurs.
-- *
-- **/
--
--static ssize_t usb_midi_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
--{
-- struct usb_mididev *m = (struct usb_mididev *)file->private_data;
-- struct midi_in_endpoint *ep = m->min.ep;
-- ssize_t ret;
-- DECLARE_WAITQUEUE(wait, current);
--
-- if ( !access_ok(VERIFY_READ, buffer, count) ) {
-- return -EFAULT;
-- }
-- if ( count == 0 ) {
-- return 0;
-- }
--
-- add_wait_queue( &ep->wait, &wait );
-- ret = 0;
-- while( count > 0 ) {
-- int cnt;
-- int d = (int)count;
--
-- cnt = m->min.bufRemains;
-- if ( cnt > d ) {
-- cnt = d;
-- }
--
-- if ( cnt <= 0 ) {
-- if ( file->f_flags & O_NONBLOCK ) {
-- if (!ret)
-- ret = -EAGAIN;
-- break;
-- }
-- __set_current_state(TASK_INTERRUPTIBLE);
-- schedule();
-- if (signal_pending(current)) {
-- if(!ret)
-- ret=-ERESTARTSYS;
-- break;
-- }
-- continue;
-- }
--
-- {
-- int i;
-- unsigned long flags; /* used to synchronize access to the endpoint */
-- spin_lock_irqsave( &ep->lock, flags );
-- for (i = 0; i < cnt; i++) {
-- if ( copy_to_user( buffer+i, m->min.buf+m->min.bufRdPtr, 1 ) ) {
-- if ( !ret )
-- ret = -EFAULT;
-- break;
-- }
-- m->min.bufRdPtr = (m->min.bufRdPtr+1)%MIDI_IN_BUFSIZ;
-- m->min.bufRemains -= 1;
-- }
-- spin_unlock_irqrestore( &ep->lock, flags );
-- }
--
-- count-=cnt;
-- buffer+=cnt;
-- ret+=cnt;
--
-- break;
-- }
--
-- remove_wait_queue( &ep->wait, &wait );
-- set_current_state(TASK_RUNNING);
--
-- return ret;
--}
--
--
--/** Basic operation on /dev/midiXX as registered through struct file_operations.
-- *
-- * Basic Contract: Take MIDI data byte-by-byte and pass it to
-- * writeMidi() which packages MIDI data into USB-MIDI stream.
-- * Then flushMidiData() is called to ensure all bytes have been written
-- * in a timely fashion.
-- *
-- **/
--
--static ssize_t usb_midi_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
--{
-- struct usb_mididev *m = (struct usb_mididev *)file->private_data;
-- ssize_t ret;
-- unsigned long int flags;
--
-- if ( !access_ok(VERIFY_READ, buffer, count) ) {
-- return -EFAULT;
-- }
-- if ( count == 0 ) {
-- return 0;
-- }
--
-- ret = 0;
-- while( count > 0 ) {
-- unsigned char c;
--
-- if (copy_from_user((unsigned char *)&c, buffer, 1)) {
-- if ( ret == 0 )
-- ret = -EFAULT;
-- break;
-- }
-- if( midi_write(m, (int)c) ) {
-- if ( ret == 0 )
-- ret = -EFAULT;
-- break;
-- }
-- count--;
-- buffer++;
-- ret++;
-- }
--
-- spin_lock_irqsave( &m->mout.ep->lock, flags );
-- if ( flush_midi_buffer(m->mout.ep) < 0 ) {
-- ret = -EFAULT;
-- }
-- spin_unlock_irqrestore( &m->mout.ep->lock, flags );
--
-- return ret;
--}
--
--/** Basic operation on /dev/midiXX as registered through struct file_operations.
-- *
-- * Basic contract: Wait (spin) until ready to read or write on the file.
-- *
-- **/
--static unsigned int usb_midi_poll(struct file *file, struct poll_table_struct *wait)
--{
-- struct usb_mididev *m = (struct usb_mididev *)file->private_data;
-- struct midi_in_endpoint *iep = m->min.ep;
-- struct midi_out_endpoint *oep = m->mout.ep;
-- unsigned long flags;
-- unsigned int mask = 0;
--
-- if ( file->f_mode & FMODE_READ ) {
-- poll_wait( file, &iep->wait, wait );
-- spin_lock_irqsave( &iep->lock, flags );
-- if ( m->min.bufRemains > 0 )
-- mask |= POLLIN | POLLRDNORM;
-- spin_unlock_irqrestore( &iep->lock, flags );
-- }
--
-- if ( file->f_mode & FMODE_WRITE ) {
-- poll_wait( file, &oep->wait, wait );
-- spin_lock_irqsave( &oep->lock, flags );
-- if ( oep->bufWrPtr < oep->bufSize )
-- mask |= POLLOUT | POLLWRNORM;
-- spin_unlock_irqrestore( &oep->lock, flags );
-- }
--
-- return mask;
--}
--
--
--/** Basic operation on /dev/midiXX as registered through struct file_operations.
-- *
-- * Basic contract: This is always the first operation performed on the
-- * device node. If no method is defined, the open succeeds without any
-- * notification given to the module.
-- *
-- **/
--
--static int usb_midi_open(struct inode *inode, struct file *file)
--{
-- int minor = iminor(inode);
-- DECLARE_WAITQUEUE(wait, current);
-- struct usb_midi_state *s;
-- struct usb_mididev *m;
-- unsigned long flags;
-- int succeed = 0;
--
--#if 0
-- printk(KERN_INFO "usb-midi: Open minor= %d.\n", minor);
--#endif
--
-- for(;;) {
-- down(&open_sem);
-- list_for_each_entry(s, &mididevs, mididev) {
-- list_for_each_entry(m, &s->midiDevList, list) {
-- if ( !((m->dev_midi ^ minor) & ~0xf) )
-- goto device_found;
-- }
-- }
-- up(&open_sem);
-- return -ENODEV;
--
-- device_found:
-- if ( !s->usbdev ) {
-- up(&open_sem);
-- return -EIO;
-- }
-- if ( !(m->open_mode & file->f_mode) ) {
-- break;
-- }
-- if ( file->f_flags & O_NONBLOCK ) {
-- up(&open_sem);
-- return -EBUSY;
-- }
-- __set_current_state(TASK_INTERRUPTIBLE);
-- add_wait_queue( &open_wait, &wait );
-- up(&open_sem);
-- schedule();
-- remove_wait_queue( &open_wait, &wait );
-- if ( signal_pending(current) ) {
-- return -ERESTARTSYS;
-- }
-- }
--
-- file->private_data = m;
-- spin_lock_irqsave( &s->lock, flags );
--
-- if ( !(m->open_mode & (FMODE_READ | FMODE_WRITE)) ) {
-- //FIXME: intented semantics unclear here
-- m->min.bufRdPtr = 0;
-- m->min.bufWrPtr = 0;
-- m->min.bufRemains = 0;
-- spin_lock_init(&m->min.ep->lock);
--
-- m->mout.bufPtr = 0;
-- m->mout.bufRemains = 0;
-- m->mout.isInExclusive = 0;
-- m->mout.lastEvent = 0;
-- spin_lock_init(&m->mout.ep->lock);
-- }
--
-- if ( (file->f_mode & FMODE_READ) && m->min.ep != NULL ) {
-- unsigned long int flagsep;
-- spin_lock_irqsave( &m->min.ep->lock, flagsep );
-- m->min.ep->cables[m->min.cableId] = m;
-- m->min.ep->readers += 1;
-- m->min.bufRdPtr = 0;
-- m->min.bufWrPtr = 0;
-- m->min.bufRemains = 0;
-- spin_unlock_irqrestore( &m->min.ep->lock, flagsep );
--
-- if ( !(m->min.ep->urbSubmitted)) {
--
-- /* urb->dev must be reinitialized on 2.4.x kernels */
-- m->min.ep->urb->dev = m->min.ep->usbdev;
--
-- if ( usb_submit_urb(m->min.ep->urb, GFP_ATOMIC) ) {
-- printk(KERN_ERR "usbmidi: Cannot submit urb for MIDI-IN\n");
-- }
-- m->min.ep->urbSubmitted = 1;
-- }
-- m->open_mode |= FMODE_READ;
-- succeed = 1;
-- }
--
-- if ( (file->f_mode & FMODE_WRITE) && m->mout.ep != NULL ) {
-- m->mout.bufPtr = 0;
-- m->mout.bufRemains = 0;
-- m->mout.isInExclusive = 0;
-- m->mout.lastEvent = 0;
-- m->open_mode |= FMODE_WRITE;
-- succeed = 1;
-- }
--
-- spin_unlock_irqrestore( &s->lock, flags );
--
-- s->count++;
-- up(&open_sem);
--
-- /** Changed to prevent extra increments to USE_COUNT. **/
-- if (!succeed) {
-- return -EBUSY;
-- }
--
--#if 0
-- printk(KERN_INFO "usb-midi: Open Succeeded. minor= %d.\n", minor);
--#endif
--
-- return nonseekable_open(inode, file); /** Success. **/
--}
--
--
--/** Basic operation on /dev/midiXX as registered through struct file_operations.
-- *
-- * Basic contract: Close an opened file and deallocate anything we allocated.
-- * Like open(), this can be missing. If open set file->private_data,
-- * release() must clear it.
-- *
-- **/
--
--static int usb_midi_release(struct inode *inode, struct file *file)
--{
-- struct usb_mididev *m = (struct usb_mididev *)file->private_data;
-- struct usb_midi_state *s = (struct usb_midi_state *)m->midi;
--
--#if 0
-- printk(KERN_INFO "usb-midi: Close.\n");
--#endif
--
-- down(&open_sem);
--
-- if ( m->open_mode & FMODE_WRITE ) {
-- m->open_mode &= ~FMODE_WRITE;
-- usb_kill_urb( m->mout.ep->urb );
-- }
--
-- if ( m->open_mode & FMODE_READ ) {
-- unsigned long int flagsep;
-- spin_lock_irqsave( &m->min.ep->lock, flagsep );
-- m->min.ep->cables[m->min.cableId] = NULL; // discard cable
-- m->min.ep->readers -= 1;
-- m->open_mode &= ~FMODE_READ;
-- if ( m->min.ep->readers == 0 &&
-- m->min.ep->urbSubmitted ) {
-- m->min.ep->urbSubmitted = 0;
-- usb_kill_urb(m->min.ep->urb);
-- }
-- spin_unlock_irqrestore( &m->min.ep->lock, flagsep );
-- }
--
-- s->count--;
--
-- up(&open_sem);
-- wake_up(&open_wait);
--
-- file->private_data = NULL;
-- return 0;
--}
--
--static struct file_operations usb_midi_fops = {
-- .owner = THIS_MODULE,
-- .llseek = usb_midi_llseek,
-- .read = usb_midi_read,
-- .write = usb_midi_write,
-- .poll = usb_midi_poll,
-- .open = usb_midi_open,
-- .release = usb_midi_release,
--};
--
--/* ------------------------------------------------------------------------- */
--
--/** Returns filled midi_in_endpoint structure or null on failure.
-- *
-- * Parameters:
-- * d - a usb_device
-- * endPoint - An usb endpoint in the range 0 to 15.
-- * Called by allocUsbMidiDev();
-- *
-- **/
--
--static struct midi_in_endpoint *alloc_midi_in_endpoint( struct usb_device *d, int endPoint )
--{
-- struct midi_in_endpoint *ep;
-- int bufSize;
-- int pipe;
--
-- endPoint &= 0x0f; /* Silently force endPoint to lie in range 0 to 15. */
--
-- pipe = usb_rcvbulkpipe( d, endPoint );
-- bufSize = usb_maxpacket( d, pipe, 0 );
-- /* usb_pipein() = ! usb_pipeout() = true for an in Endpoint */
--
-- ep = (struct midi_in_endpoint *)kmalloc(sizeof(struct midi_in_endpoint), GFP_KERNEL);
-- if ( !ep ) {
-- printk(KERN_ERR "usbmidi: no memory for midi in-endpoint\n");
-- return NULL;
-- }
-- memset( ep, 0, sizeof(struct midi_in_endpoint) );
--// this sets cables[] and readers to 0, too.
--// for (i=0; i<16; i++) ep->cables[i] = 0; // discard cable
--// ep->readers = 0;
--
-- ep->endpoint = endPoint;
--
-- ep->recvBuf = (unsigned char *)kmalloc(sizeof(unsigned char)*(bufSize), GFP_KERNEL);
-- if ( !ep->recvBuf ) {
-- printk(KERN_ERR "usbmidi: no memory for midi in-endpoint buffer\n");
-- kfree(ep);
-- return NULL;
-- }
--
-- ep->urb = usb_alloc_urb(0, GFP_KERNEL); /* no ISO */
-- if ( !ep->urb ) {
-- printk(KERN_ERR "usbmidi: no memory for midi in-endpoint urb\n");
-- kfree(ep->recvBuf);
-- kfree(ep);
-- return NULL;
-- }
-- usb_fill_bulk_urb( ep->urb, d,
-- usb_rcvbulkpipe(d, endPoint),
-- (unsigned char *)ep->recvBuf, bufSize,
-- usb_bulk_read, ep );
--
-- /* ep->bufRdPtr = 0; */
-- /* ep->bufWrPtr = 0; */
-- /* ep->bufRemains = 0; */
-- /* ep->urbSubmitted = 0; */
-- ep->recvBufSize = bufSize;
--
-- init_waitqueue_head(&ep->wait);
--
-- return ep;
--}
--
--static int remove_midi_in_endpoint( struct midi_in_endpoint *min )
--{
-- usb_kill_urb( min->urb );
-- usb_free_urb( min->urb );
-- kfree( min->recvBuf );
-- kfree( min );
--
-- return 0;
--}
--
--/** Returns filled midi_out_endpoint structure or null on failure.
-- *
-- * Parameters:
-- * d - a usb_device
-- * endPoint - An usb endpoint in the range 0 to 15.
-- * Called by allocUsbMidiDev();
-- *
-- **/
--static struct midi_out_endpoint *alloc_midi_out_endpoint( struct usb_device *d, int endPoint )
--{
-- struct midi_out_endpoint *ep = NULL;
-- int pipe;
-- int bufSize;
--
-- endPoint &= 0x0f;
-- pipe = usb_sndbulkpipe( d, endPoint );
-- bufSize = usb_maxpacket( d, pipe, 1 );
--
-- ep = (struct midi_out_endpoint *)kmalloc(sizeof(struct midi_out_endpoint), GFP_KERNEL);
-- if ( !ep ) {
-- printk(KERN_ERR "usbmidi: no memory for midi out-endpoint\n");
-- return NULL;
-- }
-- memset( ep, 0, sizeof(struct midi_out_endpoint) );
--
-- ep->endpoint = endPoint;
-- ep->buf = (unsigned char *)kmalloc(sizeof(unsigned char)*bufSize, GFP_KERNEL);
-- if ( !ep->buf ) {
-- printk(KERN_ERR "usbmidi: no memory for midi out-endpoint buffer\n");
-- kfree(ep);
-- return NULL;
-- }
--
-- ep->urb = usb_alloc_urb(0, GFP_KERNEL); /* no ISO */
-- if ( !ep->urb ) {
-- printk(KERN_ERR "usbmidi: no memory for midi out-endpoint urb\n");
-- kfree(ep->buf);
-- kfree(ep);
-- return NULL;
-- }
--
-- ep->bufSize = bufSize;
-- /* ep->bufWrPtr = 0; */
--
-- init_waitqueue_head(&ep->wait);
--
-- return ep;
--}
--
--
--static int remove_midi_out_endpoint( struct midi_out_endpoint *mout )
--{
-- usb_kill_urb( mout->urb );
-- usb_free_urb( mout->urb );
-- kfree( mout->buf );
-- kfree( mout );
--
-- return 0;
--}
--
--
--/** Returns a filled usb_mididev structure, registered as a Linux MIDI device.
-- *
-- * Returns null if memory is not available or the device cannot be registered.
-- * Called by allocUsbMidiDev();
-- *
-- **/
--static struct usb_mididev *allocMidiDev(
-- struct usb_midi_state *s,
-- struct midi_in_endpoint *min,
-- struct midi_out_endpoint *mout,
-- int inCableId,
-- int outCableId )
--{
-- struct usb_mididev *m;
--
-- m = (struct usb_mididev *)kmalloc(sizeof(struct usb_mididev), GFP_KERNEL);
-- if (!m) {
-- printk(KERN_ERR "usbmidi: no memory for midi device\n");
-- return NULL;
-- }
--
-- memset(m, 0, sizeof(struct usb_mididev));
--
-- if ((m->dev_midi = register_sound_midi(&usb_midi_fops, -1)) < 0) {
-- printk(KERN_ERR "usbmidi: cannot register midi device\n");
-- kfree(m);
-- return NULL;
-- }
--
-- m->midi = s;
-- /* m->open_mode = 0; */
--
-- if ( min ) {
-- m->min.ep = min;
-- m->min.ep->usbdev = s->usbdev;
-- m->min.cableId = inCableId;
-- }
-- /* m->min.bufPtr = 0; */
-- /* m->min.bufRemains = 0; */
--
-- if ( mout ) {
-- m->mout.ep = mout;
-- m->mout.ep->usbdev = s->usbdev;
-- m->mout.cableId = outCableId;
-- }
-- /* m->mout.bufPtr = 0; */
-- /* m->mout.bufRemains = 0; */
-- /* m->mout.isInExclusive = 0; */
-- /* m->mout.lastEvent = 0; */
--
-- m->singlebyte = singlebyte;
--
-- return m;
--}
--
--
--static void release_midi_device( struct usb_midi_state *s )
--{
-- struct usb_mididev *m;
-- struct midi_in_endpoint *min;
-- struct midi_out_endpoint *mout;
--
-- if ( s->count > 0 ) {
-- up(&open_sem);
-- return;
-- }
-- up( &open_sem );
-- wake_up( &open_wait );
--
-- while(!list_empty(&s->inEndpointList)) {
-- min = list_entry(s->inEndpointList.next, struct midi_in_endpoint, list);
-- list_del(&min->list);
-- remove_midi_in_endpoint(min);
-- }
--
-- while(!list_empty(&s->outEndpointList)) {
-- mout = list_entry(s->outEndpointList.next, struct midi_out_endpoint, list);
-- list_del(&mout->list);
-- remove_midi_out_endpoint(mout);
-- }
--
-- while(!list_empty(&s->midiDevList)) {
-- m = list_entry(s->midiDevList.next, struct usb_mididev, list);
-- list_del(&m->list);
-- kfree(m);
-- }
--
-- kfree(s);
--
-- return;
--}
--
--
--/* ------------------------------------------------------------------------- */
--
--/** Utility routine to find a descriptor in a dump of many descriptors.
-- * Returns start of descriptor or NULL if not found.
-- * descStart pointer to list of interfaces.
-- * descLength length (in bytes) of dump
-- * after (ignored if NULL) this routine returns only descriptors after "after"
-- * dtype (mandatory) The descriptor type.
-- * iface (ignored if -1) returns descriptor at/following given interface
-- * altSetting (ignored if -1) returns descriptor at/following given altSetting
-- *
-- *
-- * Called by parseDescriptor(), find_csinterface_descriptor();
-- *
-- */
--static void *find_descriptor( void *descStart, unsigned int descLength, void *after, unsigned char dtype, int iface, int altSetting )
--{
-- unsigned char *p, *end, *next;
-- int interfaceNumber = -1, altSet = -1;
--
-- p = descStart;
-- end = p + descLength;
-- for( ; p < end; ) {
-- if ( p[0] < 2 )
-- return NULL;
-- next = p + p[0];
-- if ( next > end )
-- return NULL;
-- if ( p[1] == USB_DT_INTERFACE ) {
-- if ( p[0] < USB_DT_INTERFACE_SIZE )
-- return NULL;
-- interfaceNumber = p[2];
-- altSet = p[3];
-- }
-- if ( p[1] == dtype &&
-- ( !after || ( p > (unsigned char *)after) ) &&
-- ( ( iface == -1) || (iface == interfaceNumber) ) &&
-- ( (altSetting == -1) || (altSetting == altSet) )) {
-- return p;
-- }
-- p = next;
-- }
-- return NULL;
--}
--
--/** Utility to find a class-specific interface descriptor.
-- * dsubtype is a descriptor subtype
-- * Called by parseDescriptor();
-- **/
--static void *find_csinterface_descriptor(void *descStart, unsigned int descLength, void *after, u8 dsubtype, int iface, int altSetting)
--{
-- unsigned char *p;
--
-- p = find_descriptor( descStart, descLength, after, USB_DT_CS_INTERFACE, iface, altSetting );
-- while ( p ) {
-- if ( p[0] >= 3 && p[2] == dsubtype )
-- return p;
-- p = find_descriptor( descStart, descLength, p, USB_DT_CS_INTERFACE,
-- iface, altSetting );
-- }
-- return NULL;
--}
--
--
--/** The magic of making a new usb_midi_device from config happens here.
-- *
-- * The caller is responsible for free-ing this return value (if not NULL).
-- *
-- **/
--static struct usb_midi_device *parse_descriptor( struct usb_device *d, unsigned char *buffer, int bufSize, unsigned int ifnum , unsigned int altSetting, int quirks)
--{
-- struct usb_midi_device *u;
-- unsigned char *p1;
-- unsigned char *p2;
-- unsigned char *next;
-- int iep, oep;
-- int length;
-- unsigned long longBits;
-- int pins, nbytes, offset, shift, jack;
--#ifdef HAVE_JACK_STRINGS
-- /** Jacks can have associated names. **/
-- unsigned char jack2string[256];
--#endif
--
-- u = NULL;
-- /* find audiocontrol interface */
-- p1 = find_csinterface_descriptor( buffer, bufSize, NULL,
-- MS_HEADER, ifnum, altSetting);
--
-- if ( !p1 ) {
-- goto error_end;
-- }
--
-- if ( p1[0] < MS_HEADER_LENGTH ) {
-- goto error_end;
-- }
--
-- /* Assume success. Since the device corresponds to USB-MIDI spec, we assume
-- that the rest of the USB 2.0 spec is obeyed. */
--
-- u = (struct usb_midi_device *)kmalloc( sizeof(struct usb_midi_device), GFP_KERNEL );
-- if ( !u ) {
-- return NULL;
-- }
-- u->deviceName = NULL;
-- u->idVendor = le16_to_cpu(d->descriptor.idVendor);
-- u->idProduct = le16_to_cpu(d->descriptor.idProduct);
-- u->interface = ifnum;
-- u->altSetting = altSetting;
-- u->in[0].endpoint = -1;
-- u->in[0].cableId = -1;
-- u->out[0].endpoint = -1;
-- u->out[0].cableId = -1;
--
--
-- printk(KERN_INFO "usb-midi: Found MIDIStreaming device corresponding to Release %d.%02d of spec.\n",
-- (p1[4] >> 4) * 10 + (p1[4] & 0x0f ),
-- (p1[3] >> 4) * 10 + (p1[3] & 0x0f )
-- );
--
-- length = p1[5] | (p1[6] << 8);
--
--#ifdef HAVE_JACK_STRINGS
-- memset(jack2string, 0, sizeof(unsigned char) * 256);
--#endif
--
-- length -= p1[0];
-- for (p2 = p1 + p1[0]; length > 0; p2 = next) {
-- next = p2 + p2[0];
-- length -= p2[0];
--
-- if (p2[0] < 2 )
-- break;
-- if (p2[1] != USB_DT_CS_INTERFACE)
-- break;
-- if (p2[2] == MIDI_IN_JACK && p2[0] >= 6 ) {
-- jack = p2[4];
--#ifdef HAVE_JACK_STRINGS
-- jack2string[jack] = p2[5];
--#endif
-- printk(KERN_INFO "usb-midi: Found IN Jack 0x%02x %s\n",
-- jack, (p2[3] == EMBEDDED_JACK)?"EMBEDDED":"EXTERNAL" );
-- } else if ( p2[2] == MIDI_OUT_JACK && p2[0] >= 6) {
-- pins = p2[5];
-- if ( p2[0] < (6 + 2 * pins) )
-- continue;
-- jack = p2[4];
--#ifdef HAVE_JACK_STRINGS
-- jack2string[jack] = p2[5 + 2 * pins];
--#endif
-- printk(KERN_INFO "usb-midi: Found OUT Jack 0x%02x %s, %d pins\n",
-- jack, (p2[3] == EMBEDDED_JACK)?"EMBEDDED":"EXTERNAL", pins );
-- } else if ( p2[2] == ELEMENT_DESCRIPTOR && p2[0] >= 10) {
-- pins = p2[4];
-- if ( p2[0] < (9 + 2 * pins ) )
-- continue;
-- nbytes = p2[8 + 2 * pins ];
-- if ( p2[0] < (10 + 2 * pins + nbytes) )
-- continue;
-- longBits = 0L;
-- for ( offset = 0, shift = 0; offset < nbytes && offset < 8; offset ++, shift += 8) {
-- longBits |= ((long)(p2[9 + 2 * pins + offset])) << shift;
-- }
-- jack = p2[3];
--#ifdef HAVE_JACK_STRINGS
-- jack2string[jack] = p2[9 + 2 * pins + nbytes];
--#endif
-- printk(KERN_INFO "usb-midi: Found ELEMENT 0x%02x, %d/%d pins in/out, bits: 0x%016lx\n",
-- jack, pins, (int)(p2[5 + 2 * pins]), (long)longBits );
-- } else {
-- }
-- }
--
-- iep=0;
-- oep=0;
--
-- if (quirks==0) {
-- /* MIDISTREAM */
-- p2 = NULL;
-- for (p1 = find_descriptor(buffer, bufSize, NULL, USB_DT_ENDPOINT,
-- ifnum, altSetting ); p1; p1 = next ) {
-- next = find_descriptor(buffer, bufSize, p1, USB_DT_ENDPOINT,
-- ifnum, altSetting );
-- p2 = find_descriptor(buffer, bufSize, p1, USB_DT_CS_ENDPOINT,
-- ifnum, altSetting );
--
-- if ( p2 && next && ( p2 > next ) )
-- p2 = NULL;
--
-- if ( p1[0] < 9 || !p2 || p2[0] < 4 )
-- continue;
--
-- if ( (p1[2] & 0x80) == 0x80 ) {
-- if ( iep < 15 ) {
-- pins = p2[3]; /* not pins -- actually "cables" */
-- if ( pins > 16 )
-- pins = 16;
-- u->in[iep].endpoint = p1[2];
-- u->in[iep].cableId = ( 1 << pins ) - 1;
-- if ( u->in[iep].cableId )
-- iep ++;
-- if ( iep < 15 ) {
-- u->in[iep].endpoint = -1;
-- u->in[iep].cableId = -1;
-- }
-- }
-- } else {
-- if ( oep < 15 ) {
-- pins = p2[3]; /* not pins -- actually "cables" */
-- if ( pins > 16 )
-- pins = 16;
-- u->out[oep].endpoint = p1[2];
-- u->out[oep].cableId = ( 1 << pins ) - 1;
-- if ( u->out[oep].cableId )
-- oep ++;
-- if ( oep < 15 ) {
-- u->out[oep].endpoint = -1;
-- u->out[oep].cableId = -1;
-- }
-- }
-- }
--
-- }
-- } else if (quirks==1) {
-- /* YAMAHA quirks */
-- for (p1 = find_descriptor(buffer, bufSize, NULL, USB_DT_ENDPOINT,
-- ifnum, altSetting ); p1; p1 = next ) {
-- next = find_descriptor(buffer, bufSize, p1, USB_DT_ENDPOINT,
-- ifnum, altSetting );
--
-- if ( p1[0] < 7 )
-- continue;
--
-- if ( (p1[2] & 0x80) == 0x80 ) {
-- if ( iep < 15 ) {
-- pins = iep+1;
-- if ( pins > 16 )
-- pins = 16;
-- u->in[iep].endpoint = p1[2];
-- u->in[iep].cableId = ( 1 << pins ) - 1;
-- if ( u->in[iep].cableId )
-- iep ++;
-- if ( iep < 15 ) {
-- u->in[iep].endpoint = -1;
-- u->in[iep].cableId = -1;
-- }
-- }
-- } else {
-- if ( oep < 15 ) {
-- pins = oep+1;
-- u->out[oep].endpoint = p1[2];
-- u->out[oep].cableId = ( 1 << pins ) - 1;
-- if ( u->out[oep].cableId )
-- oep ++;
-- if ( oep < 15 ) {
-- u->out[oep].endpoint = -1;
-- u->out[oep].cableId = -1;
-- }
-- }
-- }
--
-- }
-- }
--
-- if ( !iep && ! oep ) {
-- goto error_end;
-- }
--
-- return u;
--
--error_end:
-- kfree(u);
-- return NULL;
--}
--
--/* ------------------------------------------------------------------------- */
--
--/** Returns number between 0 and 16.
-- *
-- **/
--static int on_bits( unsigned short v )
--{
-- int i;
-- int ret=0;
--
-- for ( i=0 ; i<16 ; i++ ) {
-- if ( v & (1<<i) )
-- ret++;
-- }
--
-- return ret;
--}
--
--
--/** USB-device will be interrogated for altSetting.
-- *
-- * Returns negative on error.
-- * Called by allocUsbMidiDev();
-- *
-- **/
--
--static int get_alt_setting( struct usb_device *d, int ifnum )
--{
-- int alts, alt=0;
-- struct usb_interface *iface;
-- struct usb_host_interface *interface;
-- struct usb_endpoint_descriptor *ep;
-- int epin, epout;
-- int i;
--
-- iface = usb_ifnum_to_if( d, ifnum );
-- alts = iface->num_altsetting;
--
-- for ( alt=0 ; alt<alts ; alt++ ) {
-- interface = &iface->altsetting[alt];
-- epin = -1;
-- epout = -1;
--
-- for ( i=0 ; i<interface->desc.bNumEndpoints ; i++ ) {
-- ep = &interface->endpoint[i].desc;
-- if ( (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK ) {
-- continue;
-- }
-- if ( (ep->bEndpointAddress & USB_DIR_IN) && epin < 0 ) {
-- epin = i;
-- } else if ( epout < 0 ) {
-- epout = i;
-- }
-- if ( epin >= 0 && epout >= 0 ) {
-- return interface->desc.bAlternateSetting;
-- }
-- }
-- }
--
-- return -ENODEV;
--}
--
--
--/* ------------------------------------------------------------------------- */
--
--
--/** Returns 0 if successful in allocating and registering internal structures.
-- * Returns negative on failure.
-- * Calls allocMidiDev which additionally registers /dev/midiXX devices.
-- * Writes messages on success to indicate which /dev/midiXX is which physical
-- * endpoint.
-- *
-- **/
--static int alloc_usb_midi_device( struct usb_device *d, struct usb_midi_state *s, struct usb_midi_device *u )
--{
-- struct usb_mididev **mdevs=NULL;
-- struct midi_in_endpoint *mins[15], *min;
-- struct midi_out_endpoint *mouts[15], *mout;
-- int inDevs=0, outDevs=0;
-- int inEndpoints=0, outEndpoints=0;
-- int inEndpoint, outEndpoint;
-- int inCableId, outCableId;
-- int i;
-- int devices = 0;
-- int alt = 0;
--
-- /* Obtain altSetting or die.. */
-- alt = u->altSetting;
-- if ( alt < 0 ) {
-- alt = get_alt_setting( d, u->interface );
-- }
-- if ( alt < 0 )
-- return -ENXIO;
--
-- /* Configure interface */
-- if ( usb_set_interface( d, u->interface, alt ) < 0 ) {
-- return -ENXIO;
-- }
--
-- for ( i = 0 ; i < 15 ; i++ ) {
-- mins[i] = NULL;
-- mouts[i] = NULL;
-- }
--
-- /* Begin Allocation */
-- while( inEndpoints < 15
-- && inDevs < maxdevices
-- && u->in[inEndpoints].cableId >= 0 ) {
-- inDevs += on_bits((unsigned short)u->in[inEndpoints].cableId);
-- mins[inEndpoints] = alloc_midi_in_endpoint( d, u->in[inEndpoints].endpoint );
-- if ( mins[inEndpoints] == NULL )
-- goto error_end;
-- inEndpoints++;
-- }
--
-- while( outEndpoints < 15
-- && outDevs < maxdevices
-- && u->out[outEndpoints].cableId >= 0 ) {
-- outDevs += on_bits((unsigned short)u->out[outEndpoints].cableId);
-- mouts[outEndpoints] = alloc_midi_out_endpoint( d, u->out[outEndpoints].endpoint );
-- if ( mouts[outEndpoints] == NULL )
-- goto error_end;
-- outEndpoints++;
-- }
--
-- devices = inDevs > outDevs ? inDevs : outDevs;
-- devices = maxdevices > devices ? devices : maxdevices;
--
-- /* obtain space for device name (iProduct) if not known. */
-- if ( ! u->deviceName ) {
-- mdevs = (struct usb_mididev **)
-- kmalloc(sizeof(struct usb_mididevs *)*devices
-- + sizeof(char) * 256, GFP_KERNEL);
-- } else {
-- mdevs = (struct usb_mididev **)
-- kmalloc(sizeof(struct usb_mididevs *)*devices, GFP_KERNEL);
-- }
--
-- if ( !mdevs ) {
-- /* devices = 0; */
-- /* mdevs = NULL; */
-- goto error_end;
-- }
-- for ( i=0 ; i<devices ; i++ ) {
-- mdevs[i] = NULL;
-- }
--
-- /* obtain device name (iProduct) if not known. */
-- if ( ! u->deviceName ) {
-- u->deviceName = (char *) (mdevs + devices);
-- if ( ! d->have_langid && d->descriptor.iProduct) {
-- alt = usb_get_string(d, 0, 0, u->deviceName, 250);
-- if (alt < 0) {
-- printk(KERN_INFO "error getting string descriptor 0 (error=%d)\n", alt);
-- } else if (u->deviceName[0] < 4) {
-- printk(KERN_INFO "string descriptor 0 too short (length = %d)\n", alt);
-- } else {
-- printk(KERN_INFO "string descriptor 0 found (length = %d)\n", alt);
-- for(; alt >= 4; alt -= 2) {
-- i = u->deviceName[alt-2] | (u->deviceName[alt-1]<< 8);
-- printk(KERN_INFO "usb-midi: langid(%d) 0x%04x\n",
-- (alt-4) >> 1, i);
-- if ( ( ( i ^ ulangid ) & 0xff ) == 0 ) {
-- d->have_langid = 1;
-- d->string_langid = i;
-- printk(KERN_INFO "usb-midi: langid(match) 0x%04x\n", i);
-- if ( i == ulangid )
-- break;
-- }
-- }
-- }
-- }
-- u->deviceName[0] = (char) 0;
-- if (d->descriptor.iProduct) {
-- printk(KERN_INFO "usb-midi: fetchString(%d)\n", d->descriptor.iProduct);
-- alt = usb_string(d, d->descriptor.iProduct, u->deviceName, 255);
-- if( alt < 0 ) {
-- u->deviceName[0] = (char) 0;
-- }
-- printk(KERN_INFO "usb-midi: fetchString = %d\n", alt);
-- }
-- /* Failsafe */
-- if ( !u->deviceName[0] ) {
-- if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_ROLAND ) {
-- strcpy(u->deviceName, "Unknown Roland");
-- } else if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_STEINBERG ) {
-- strcpy(u->deviceName, "Unknown Steinberg");
-- } else if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_YAMAHA ) {
-- strcpy(u->deviceName, "Unknown Yamaha");
-- } else {
-- strcpy(u->deviceName, "Unknown");
-- }
-- }
-- }
--
-- inEndpoint = 0; inCableId = -1;
-- outEndpoint = 0; outCableId = -1;
--
-- for ( i=0 ; i<devices ; i++ ) {
-- for ( inCableId ++ ;
-- inEndpoint <15
-- && mins[inEndpoint]
-- && !(u->in[inEndpoint].cableId & (1<<inCableId)) ;
-- inCableId++ ) {
-- if ( inCableId >= 16 ) {
-- inEndpoint ++;
-- inCableId = 0;
-- }
-- }
-- min = mins[inEndpoint];
-- for ( outCableId ++ ;
-- outEndpoint <15
-- && mouts[outEndpoint]
-- && !(u->out[outEndpoint].cableId & (1<<outCableId)) ;
-- outCableId++ ) {
-- if ( outCableId >= 16 ) {
-- outEndpoint ++;
-- outCableId = 0;
-- }
-- }
-- mout = mouts[outEndpoint];
--
-- mdevs[i] = allocMidiDev( s, min, mout, inCableId, outCableId );
-- if ( mdevs[i] == NULL )
-- goto error_end;
--
-- }
--
-- /* Success! */
-- for ( i=0 ; i<devices ; i++ ) {
-- list_add_tail( &mdevs[i]->list, &s->midiDevList );
-- }
-- for ( i=0 ; i<inEndpoints ; i++ ) {
-- list_add_tail( &mins[i]->list, &s->inEndpointList );
-- }
-- for ( i=0 ; i<outEndpoints ; i++ ) {
-- list_add_tail( &mouts[i]->list, &s->outEndpointList );
-- }
--
-- printk(KERN_INFO "usbmidi: found [ %s ] (0x%04x:0x%04x), attached:\n", u->deviceName, u->idVendor, u->idProduct );
-- for ( i=0 ; i<devices ; i++ ) {
-- int dm = (mdevs[i]->dev_midi-2)>>4;
-- if ( mdevs[i]->mout.ep != NULL && mdevs[i]->min.ep != NULL ) {
-- printk(KERN_INFO "usbmidi: /dev/midi%02d: in (ep:%02x cid:%2d bufsiz:%2d) out (ep:%02x cid:%2d bufsiz:%2d)\n",
-- dm,
-- mdevs[i]->min.ep->endpoint|USB_DIR_IN, mdevs[i]->min.cableId, mdevs[i]->min.ep->recvBufSize,
-- mdevs[i]->mout.ep->endpoint, mdevs[i]->mout.cableId, mdevs[i]->mout.ep->bufSize);
-- } else if ( mdevs[i]->min.ep != NULL ) {
-- printk(KERN_INFO "usbmidi: /dev/midi%02d: in (ep:%02x cid:%2d bufsiz:%02d)\n",
-- dm,
-- mdevs[i]->min.ep->endpoint|USB_DIR_IN, mdevs[i]->min.cableId, mdevs[i]->min.ep->recvBufSize);
-- } else if ( mdevs[i]->mout.ep != NULL ) {
-- printk(KERN_INFO "usbmidi: /dev/midi%02d: out (ep:%02x cid:%2d bufsiz:%02d)\n",
-- dm,
-- mdevs[i]->mout.ep->endpoint, mdevs[i]->mout.cableId, mdevs[i]->mout.ep->bufSize);
-- }
-- }
--
-- kfree(mdevs);
-- return 0;
--
-- error_end:
-- if ( mdevs != NULL ) {
-- for ( i=0 ; i<devices ; i++ ) {
-- if ( mdevs[i] != NULL ) {
-- unregister_sound_midi( mdevs[i]->dev_midi );
-- kfree(mdevs[i]);
-- }
-- }
-- kfree(mdevs);
-- }
--
-- for ( i=0 ; i<15 ; i++ ) {
-- if ( mins[i] != NULL ) {
-- remove_midi_in_endpoint( mins[i] );
-- }
-- if ( mouts[i] != NULL ) {
-- remove_midi_out_endpoint( mouts[i] );
-- }
-- }
--
-- return -ENOMEM;
--}
--
--/* ------------------------------------------------------------------------- */
--
--/** Attempt to scan YAMAHA's device descriptor and detect correct values of
-- * them.
-- * Return 0 on succes, negative on failure.
-- * Called by usb_midi_probe();
-- **/
--
--static int detect_yamaha_device( struct usb_device *d,
-- struct usb_interface *iface, unsigned int ifnum,
-- struct usb_midi_state *s)
--{
-- struct usb_host_interface *interface;
-- struct usb_midi_device *u;
-- unsigned char *buffer;
-- int bufSize;
-- int i;
-- int alts=-1;
-- int ret;
--
-- if (le16_to_cpu(d->descriptor.idVendor) != USB_VENDOR_ID_YAMAHA) {
-- return -EINVAL;
-- }
--
-- for ( i=0 ; i < iface->num_altsetting; i++ ) {
-- interface = iface->altsetting + i;
--
-- if ( interface->desc.bInterfaceClass != 255 ||
-- interface->desc.bInterfaceSubClass != 0 )
-- continue;
-- alts = interface->desc.bAlternateSetting;
-- }
-- if ( alts == -1 ) {
-- return -EINVAL;
-- }
--
-- printk(KERN_INFO "usb-midi: Found YAMAHA USB-MIDI device on dev %04x:%04x, iface %d\n",
-- le16_to_cpu(d->descriptor.idVendor),
-- le16_to_cpu(d->descriptor.idProduct), ifnum);
--
-- i = d->actconfig - d->config;
-- buffer = d->rawdescriptors[i];
-- bufSize = le16_to_cpu(d->actconfig->desc.wTotalLength);
--
-- u = parse_descriptor( d, buffer, bufSize, ifnum, alts, 1);
-- if ( u == NULL ) {
-- return -EINVAL;
-- }
--
-- ret = alloc_usb_midi_device( d, s, u );
--
-- kfree(u);
--
-- return ret;
--}
--
--
--/** Scan table of known devices which are only partially compliant with
-- * the MIDIStreaming specification.
-- * Called by usb_midi_probe();
-- *
-- **/
--
--static int detect_vendor_specific_device( struct usb_device *d, unsigned int ifnum, struct usb_midi_state *s )
--{
-- struct usb_midi_device *u;
-- int i;
-- int ret = -ENXIO;
--
-- for ( i=0; i<VENDOR_SPECIFIC_USB_MIDI_DEVICES ; i++ ) {
-- u=&(usb_midi_devices[i]);
--
-- if ( le16_to_cpu(d->descriptor.idVendor) != u->idVendor ||
-- le16_to_cpu(d->descriptor.idProduct) != u->idProduct ||
-- ifnum != u->interface )
-- continue;
--
-- ret = alloc_usb_midi_device( d, s, u );
-- break;
-- }
--
-- return ret;
--}
--
--
--/** Attempt to match any config of an interface to a MIDISTREAMING interface.
-- * Returns 0 on success, negative on failure.
-- * Called by usb_midi_probe();
-- **/
--static int detect_midi_subclass(struct usb_device *d,
-- struct usb_interface *iface, unsigned int ifnum,
-- struct usb_midi_state *s)
--{
-- struct usb_host_interface *interface;
-- struct usb_midi_device *u;
-- unsigned char *buffer;
-- int bufSize;
-- int i;
-- int alts=-1;
-- int ret;
--
-- for ( i=0 ; i < iface->num_altsetting; i++ ) {
-- interface = iface->altsetting + i;
--
-- if ( interface->desc.bInterfaceClass != USB_CLASS_AUDIO ||
-- interface->desc.bInterfaceSubClass != USB_SUBCLASS_MIDISTREAMING )
-- continue;
-- alts = interface->desc.bAlternateSetting;
-- }
-- if ( alts == -1 ) {
-- return -EINVAL;
-- }
--
-- printk(KERN_INFO "usb-midi: Found MIDISTREAMING on dev %04x:%04x, iface %d\n",
-- le16_to_cpu(d->descriptor.idVendor),
-- le16_to_cpu(d->descriptor.idProduct), ifnum);
--
--
-- /* From USB Spec v2.0, Section 9.5.
-- If the class or vendor specific descriptors use the same format
-- as standard descriptors (e.g., start with a length byte and
-- followed by a type byte), they must be returned interleaved with
-- standard descriptors in the configuration information returned by
-- a GetDescriptor(Configuration) request. In this case, the class
-- or vendor-specific descriptors must follow a related standard
-- descriptor they modify or extend.
-- */
--
-- i = d->actconfig - d->config;
-- buffer = d->rawdescriptors[i];
-- bufSize = le16_to_cpu(d->actconfig->desc.wTotalLength);
--
-- u = parse_descriptor( d, buffer, bufSize, ifnum, alts, 0);
-- if ( u == NULL ) {
-- return -EINVAL;
-- }
--
-- ret = alloc_usb_midi_device( d, s, u );
--
-- kfree(u);
--
-- return ret;
--}
--
--
--/** When user has requested a specific device, match it exactly.
-- *
-- * Uses uvendor, uproduct, uinterface, ualt, umin, umout and ucable.
-- * Called by usb_midi_probe();
-- *
-- **/
--static int detect_by_hand(struct usb_device *d, unsigned int ifnum, struct usb_midi_state *s)
--{
-- struct usb_midi_device u;
--
-- if ( le16_to_cpu(d->descriptor.idVendor) != uvendor ||
-- le16_to_cpu(d->descriptor.idProduct) != uproduct ||
-- ifnum != uinterface ) {
-- return -EINVAL;
-- }
--
-- if ( ualt < 0 )
-- ualt = -1;
--
-- if ( umin < 0 || umin > 15 )
-- umin = 0x01 | USB_DIR_IN;
-- if ( umout < 0 || umout > 15 )
-- umout = 0x01;
-- if ( ucable < 0 || ucable > 15 )
-- ucable = 0;
--
-- u.deviceName = NULL; /* A flag for alloc_usb_midi_device to get device
-- name from device. */
-- u.idVendor = uvendor;
-- u.idProduct = uproduct;
-- u.interface = uinterface;
-- u.altSetting = ualt;
--
-- u.in[0].endpoint = umin;
-- u.in[0].cableId = (1<<ucable);
--
-- u.out[0].endpoint = umout;
-- u.out[0].cableId = (1<<ucable);
--
-- return alloc_usb_midi_device( d, s, &u );
--}
--
--
--
--/* ------------------------------------------------------------------------- */
--
--static int usb_midi_probe(struct usb_interface *intf,
-- const struct usb_device_id *id)
--{
-- struct usb_midi_state *s;
-- struct usb_device *dev = interface_to_usbdev(intf);
-- int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
--
-- s = (struct usb_midi_state *)kmalloc(sizeof(struct usb_midi_state), GFP_KERNEL);
-- if ( !s )
-- return -ENOMEM;
--
-- memset( s, 0, sizeof(struct usb_midi_state) );
-- INIT_LIST_HEAD(&s->midiDevList);
-- INIT_LIST_HEAD(&s->inEndpointList);
-- INIT_LIST_HEAD(&s->outEndpointList);
-- s->usbdev = dev;
-- s->count = 0;
-- spin_lock_init(&s->lock);
--
-- if (
-- detect_by_hand( dev, ifnum, s ) &&
-- detect_midi_subclass( dev, intf, ifnum, s ) &&
-- detect_vendor_specific_device( dev, ifnum, s ) &&
-- detect_yamaha_device( dev, intf, ifnum, s) ) {
-- kfree(s);
-- return -EIO;
-- }
--
-- down(&open_sem);
-- list_add_tail(&s->mididev, &mididevs);
-- up(&open_sem);
--
-- usb_set_intfdata (intf, s);
-- return 0;
--}
--
--
--static void usb_midi_disconnect(struct usb_interface *intf)
--{
-- struct usb_midi_state *s = usb_get_intfdata (intf);
-- struct usb_mididev *m;
--
-- if ( !s )
-- return;
--
-- if ( s == (struct usb_midi_state *)-1 ) {
-- return;
-- }
-- if ( !s->usbdev ) {
-- return;
-- }
-- down(&open_sem);
-- list_del(&s->mididev);
-- INIT_LIST_HEAD(&s->mididev);
-- s->usbdev = NULL;
-- usb_set_intfdata (intf, NULL);
--
-- list_for_each_entry(m, &s->midiDevList, list) {
-- wake_up(&(m->min.ep->wait));
-- wake_up(&(m->mout.ep->wait));
-- if ( m->dev_midi >= 0 ) {
-- unregister_sound_midi(m->dev_midi);
-- }
-- m->dev_midi = -1;
-- }
-- release_midi_device(s);
-- wake_up(&open_wait);
--}
--
--/* we want to look at all devices by hand */
--static struct usb_device_id id_table[] = {
-- {.driver_info = 42},
-- {}
--};
--
--static struct usb_driver usb_midi_driver = {
-- .name = "midi",
-- .probe = usb_midi_probe,
-- .disconnect = usb_midi_disconnect,
-- .id_table = id_table,
--};
--
--/* ------------------------------------------------------------------------- */
--
--static int __init usb_midi_init(void)
--{
-- return usb_register(&usb_midi_driver);
--}
--
--static void __exit usb_midi_exit(void)
--{
-- usb_deregister(&usb_midi_driver);
--}
--
--module_init(usb_midi_init) ;
--module_exit(usb_midi_exit) ;
--
--#ifdef HAVE_ALSA_SUPPORT
--#define SNDRV_MAIN_OBJECT_FILE
--#include "../../include/driver.h"
--#include "../../include/control.h"
--#include "../../include/info.h"
--#include "../../include/cs46xx.h"
--
--/* ------------------------------------------------------------------------- */
--
--static int snd_usbmidi_input_close(snd_rawmidi_substream_t * substream)
--{
-- return 0;
--}
--
--static int snd_usbmidi_input_open(snd_rawmidi_substream_t * substream )
--{
-- return 0;
--}
--
--static void snd_usbmidi_input_trigger(snd_rawmidi_substream_t * substream, int up)
--{
-- return 0;
--}
--
--
--/* ------------------------------------------------------------------------- */
--
--static int snd_usbmidi_output_close(snd_rawmidi_substream_t * substream)
--{
-- return 0;
--}
--
--static int snd_usbmidi_output_open(snd_rawmidi_substream_t * substream)
--{
-- return 0;
--}
--
--static void snd_usb_midi_output_trigger(snd_rawmidi_substream_t * substream,
-- int up)
--{
-- return 0;
--}
--
--/* ------------------------------------------------------------------------- */
--
--static snd_rawmidi_ops_t snd_usbmidi_output =
--{
-- .open = snd_usbmidi_output_open,
-- .close = snd_usbmidi_output_close,
-- .trigger = snd_usbmidi_output_trigger,
--};
--static snd_rawmidi_ops_t snd_usbmidi_input =
--{
-- .open = snd_usbmidi_input_open,
-- .close = snd_usbmidi_input_close,
-- .trigger = snd_usbmidi_input_trigger,
--};
--
--int snd_usbmidi_midi(cs46xx_t *chip, int device, snd_rawmidi_t **rrawmidi)
--{
-- snd_rawmidi_t *rmidi;
-- int err;
--
-- if (rrawmidi)
-- *rrawmidi = NULL;
-- if ((err = snd_rawmidi_new(chip->card, "USB-MIDI", device, 1, 1, &rmidi)) < 0)
-- return err;
-- strcpy(rmidi->name, "USB-MIDI");
--
-- snd_rawmidi_set_ops( rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usbmidi_output );
-- snd_rawmidi_set_ops( rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usbmidi_input );
--
-- rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX;
--
-- rmidi->private_data = chip;
-- chip->rmidi = rmidi;
-- if (rrawmidi)
-- *rrawmidi = NULL;
--
-- return 0;
--}
--
--int snd_usbmidi_create( snd_card_t * card,
-- struct pci_dev * pci,
-- usbmidi_t ** rchip )
--{
-- usbmidi_t *chip;
-- int err, idx;
-- snd_region_t *region;
-- static snd_device_opt_t ops = {
-- .dev_free = snd_usbmidi_dev_free,
-- };
--
-- *rchip = NULL;
-- chip = snd_magic_kcalloc( usbmidi_t, 0, GFP_KERNEL );
-- if ( chip == NULL )
-- return -ENOMEM;
--}
--
--EXPORT_SYMBOL(snd_usbmidi_create);
--EXPORT_SYMBOL(snd_usbmidi_midi);
--#endif /* HAVE_ALSA_SUPPORT */
--
---- gregkh-2.6.orig/drivers/usb/class/audio.h
-+++ /dev/null
-@@ -1,110 +0,0 @@
--#define CS_AUDIO_UNDEFINED 0x20
--#define CS_AUDIO_DEVICE 0x21
--#define CS_AUDIO_CONFIGURATION 0x22
--#define CS_AUDIO_STRING 0x23
--#define CS_AUDIO_INTERFACE 0x24
--#define CS_AUDIO_ENDPOINT 0x25
--
--#define HEADER 0x01
--#define INPUT_TERMINAL 0x02
--#define OUTPUT_TERMINAL 0x03
--#define MIXER_UNIT 0x04
--#define SELECTOR_UNIT 0x05
--#define FEATURE_UNIT 0x06
--#define PROCESSING_UNIT 0x07
--#define EXTENSION_UNIT 0x08
--
--#define AS_GENERAL 0x01
--#define FORMAT_TYPE 0x02
--#define FORMAT_SPECIFIC 0x03
--
--#define EP_GENERAL 0x01
--
--#define MAX_CHAN 9
--#define MAX_FREQ 16
--#define MAX_IFACE 8
--#define MAX_FORMAT 8
--#define MAX_ALT 32 /* Sorry, we need quite a few for the Philips webcams */
--
--struct usb_audio_terminal
--{
-- u8 flags;
-- u8 assoc;
-- u16 type; /* Mic etc */
-- u8 channels;
-- u8 source;
-- u16 chancfg;
--};
--
--struct usb_audio_format
--{
-- u8 type;
-- u8 channels;
-- u8 num_freq;
-- u8 sfz;
-- u8 bits;
-- u16 freq[MAX_FREQ];
--};
--
--struct usb_audio_interface
--{
-- u8 terminal;
-- u8 delay;
-- u16 num_formats;
-- u16 format_type;
-- u8 flags;
-- u8 idleconf; /* Idle config */
--#define AU_IFACE_FOUND 1
-- struct usb_audio_format format[MAX_FORMAT];
--};
--
--struct usb_audio_device
--{
-- struct list_head list;
-- u8 mixer;
-- u8 selector;
-- void *irq_handle;
-- u8 num_channels;
-- u8 num_dsp_iface;
-- u8 channel_map[MAX_CHAN];
-- struct usb_audio_terminal terminal[MAX_CHAN];
-- struct usb_audio_interface interface[MAX_IFACE][MAX_ALT];
--};
--
--
--
--/* Audio Class specific Request Codes */
--
--#define SET_CUR 0x01
--#define GET_CUR 0x81
--#define SET_MIN 0x02
--#define GET_MIN 0x82
--#define SET_MAX 0x03
--#define GET_MAX 0x83
--#define SET_RES 0x04
--#define GET_RES 0x84
--#define SET_MEM 0x05
--#define GET_MEM 0x85
--#define GET_STAT 0xff
--
--/* Terminal Control Selectors */
--
--#define COPY_PROTECT_CONTROL 0x01
--
--/* Feature Unit Control Selectors */
--
--#define MUTE_CONTROL 0x01
--#define VOLUME_CONTROL 0x02
--#define BASS_CONTROL 0x03
--#define MID_CONTROL 0x04
--#define TREBLE_CONTROL 0x05
--#define GRAPHIC_EQUALIZER_CONTROL 0x06
--#define AUTOMATIC_GAIN_CONTROL 0x07
--#define DELAY_CONTROL 0x08
--#define BASS_BOOST_CONTROL 0x09
--#define LOUDNESS_CONTROL 0x0a
--
--/* Endpoint Control Selectors */
--
--#define SAMPLING_FREQ_CONTROL 0x01
--#define PITCH_CONTROL 0x02
---- gregkh-2.6.orig/drivers/usb/class/audio.c
-+++ /dev/null
-@@ -1,3869 +0,0 @@
--/*****************************************************************************/
--
--/*
-- * audio.c -- USB Audio Class driver
-- *
-- * Copyright (C) 1999, 2000, 2001, 2003, 2004
-- * Alan Cox (alan@lxorguk.ukuu.org.uk)
-- * Thomas Sailer (sailer@ife.ee.ethz.ch)
-- *
-- * This program is free software; you can redistribute it and/or modify
-- * it under the terms of the GNU General Public License as published by
-- * the Free Software Foundation; either version 2 of the License, or
-- * (at your option) any later version.
-- *
-- * Debugging:
-- * Use the 'lsusb' utility to dump the descriptors.
-- *
-- * 1999-09-07: Alan Cox
-- * Parsing Audio descriptor patch
-- * 1999-09-08: Thomas Sailer
-- * Added OSS compatible data io functions; both parts of the
-- * driver remain to be glued together
-- * 1999-09-10: Thomas Sailer
-- * Beautified the driver. Added sample format conversions.
-- * Still not properly glued with the parsing code.
-- * The parsing code seems to have its problems btw,
-- * Since it parses all available configs but doesn't
-- * store which iface/altsetting belongs to which config.
-- * 1999-09-20: Thomas Sailer
-- * Threw out Alan's parsing code and implemented my own one.
-- * You cannot reasonnably linearly parse audio descriptors,
-- * especially the AudioClass descriptors have to be considered
-- * pointer lists. Mixer parsing untested, due to lack of device.
-- * First stab at synch pipe implementation, the Dallas USB DAC
-- * wants to use an Asynch out pipe. usb_audio_state now basically
-- * only contains lists of mixer and wave devices. We can therefore
-- * now have multiple mixer/wave devices per USB device.
-- * 1999-10-28: Thomas Sailer
-- * Converted to URB API. Fixed a taskstate/wakeup semantics mistake
-- * that made the driver consume all available CPU cycles.
-- * Now runs stable on UHCI-Acher/Fliegl/Sailer.
-- * 1999-10-31: Thomas Sailer
-- * Audio can now be unloaded if it is not in use by any mixer
-- * or dsp client (formerly you had to disconnect the audio devices
-- * from the USB port)
-- * Finally, about three months after ordering, my "Maxxtro SPK222"
-- * speakers arrived, isn't disdata a great mail order company 8-)
-- * Parse class specific endpoint descriptor of the audiostreaming
-- * interfaces and take the endpoint attributes from there.
-- * Unbelievably, the Philips USB DAC has a sampling rate range
-- * of over a decade, yet does not support the sampling rate control!
-- * No wonder it sounds so bad, has very audible sampling rate
-- * conversion distortion. Don't try to listen to it using
-- * decent headphones!
-- * "Let's make things better" -> but please Philips start with your
-- * own stuff!!!!
-- * 1999-11-02: Thomas Sailer
-- * It takes the Philips boxes several seconds to acquire synchronisation
-- * that means they won't play short sounds. Should probably maintain
-- * the ISO datastream even if there's nothing to play.
-- * Fix counting the total_bytes counter, RealPlayer G2 depends on it.
-- * 1999-12-20: Thomas Sailer
-- * Fix bad bug in conversion to per interface probing.
-- * disconnect was called multiple times for the audio device,
-- * leading to a premature freeing of the audio structures
-- * 2000-05-13: Thomas Sailer
-- * I don't remember who changed the find_format routine,
-- * but the change was completely broken for the Dallas
-- * chip. Anyway taking sampling rate into account in find_format
-- * is bad and should not be done unless there are devices with
-- * completely broken audio descriptors. Unless someone shows
-- * me such a descriptor, I will not allow find_format to
-- * take the sampling rate into account.
-- * Also, the former find_format made:
-- * - mpg123 play mono instead of stereo
-- * - sox completely fail for wav's with sample rates < 44.1kHz
-- * for the Dallas chip.
-- * Also fix a rather long standing problem with applications that
-- * use "small" writes producing no sound at all.
-- * 2000-05-15: Thomas Sailer
-- * My fears came true, the Philips camera indeed has pretty stupid
-- * audio descriptors.
-- * 2000-05-17: Thomas Sailer
-- * Nemsoft spotted my stupid last minute change, thanks
-- * 2000-05-19: Thomas Sailer
-- * Fixed FEATURE_UNIT thinkos found thanks to the KC Technology
-- * Xtend device. Basically the driver treated FEATURE_UNIT's sourced
-- * by mono terminals as stereo.
-- * 2000-05-20: Thomas Sailer
-- * SELECTOR support (and thus selecting record channels from the mixer).
-- * Somewhat peculiar due to OSS interface limitations. Only works
-- * for channels where a "slider" is already in front of it (i.e.
-- * a MIXER unit or a FEATURE unit with volume capability).
-- * 2000-11-26: Thomas Sailer
-- * Workaround for Dallas DS4201. The DS4201 uses PCM8 as format tag for
-- * its 8 bit modes, but expects signed data (and should therefore have used PCM).
-- * 2001-03-10: Thomas Sailer
-- * provide abs function, prevent picking up a bogus kernel macro
-- * for abs. Bug report by Andrew Morton <andrewm@uow.edu.au>
-- * 2001-06-16: Bryce Nesbitt <bryce@obviously.com>
-- * Fix SNDCTL_DSP_STEREO API violation
-- * 2003-04-08: Oliver Neukum (oliver@neukum.name):
-- * Setting a configuration is done by usbcore and must not be overridden
-- * 2004-02-27: Workaround for broken synch descriptors
-- * 2004-03-07: Alan Stern <stern@rowland.harvard.edu>
-- * Add usb_ifnum_to_if() and usb_altnum_to_altsetting() support.
-- * Use the in-memory descriptors instead of reading them from the device.
-- *
-- */
--
--/*
-- * Strategy:
-- *
-- * Alan Cox and Thomas Sailer are starting to dig at opposite ends and
-- * are hoping to meet in the middle, just like tunnel diggers :)
-- * Alan tackles the descriptor parsing, Thomas the actual data IO and the
-- * OSS compatible interface.
-- *
-- * Data IO implementation issues
-- *
-- * A mmap'able ring buffer per direction is implemented, because
-- * almost every OSS app expects it. It is however impractical to
-- * transmit/receive USB data directly into and out of the ring buffer,
-- * due to alignment and synchronisation issues. Instead, the ring buffer
-- * feeds a constant time delay line that handles the USB issues.
-- *
-- * Now we first try to find an alternate setting that exactly matches
-- * the sample format requested by the user. If we find one, we do not
-- * need to perform any sample rate conversions. If there is no matching
-- * altsetting, we choose the closest one and perform sample format
-- * conversions. We never do sample rate conversion; these are too
-- * expensive to be performed in the kernel.
-- *
-- * Current status: no known HCD-specific issues.
-- *
-- * Generally: Due to the brokenness of the Audio Class spec
-- * it seems generally impossible to write a generic Audio Class driver,
-- * so a reasonable driver should implement the features that are actually
-- * used.
-- *
-- * Parsing implementation issues
-- *
-- * One cannot reasonably parse the AudioClass descriptors linearly.
-- * Therefore the current implementation features routines to look
-- * for a specific descriptor in the descriptor list.
-- *
-- * How does the parsing work? First, all interfaces are searched
-- * for an AudioControl class interface. If found, the config descriptor
-- * that belongs to the current configuration is searched and
-- * the HEADER descriptor is found. It contains a list of
-- * all AudioStreaming and MIDIStreaming devices. This list is then walked,
-- * and all AudioStreaming interfaces are classified into input and output
-- * interfaces (according to the endpoint0 direction in altsetting1) (MIDIStreaming
-- * is currently not supported). The input & output list is then used
-- * to group inputs and outputs together and issued pairwise to the
-- * AudioStreaming class parser. Finally, all OUTPUT_TERMINAL descriptors
-- * are walked and issued to the mixer construction routine.
-- *
-- * The AudioStreaming parser simply enumerates all altsettings belonging
-- * to the specified interface. It looks for AS_GENERAL and FORMAT_TYPE
-- * class specific descriptors to extract the sample format/sample rate
-- * data. Only sample format types PCM and PCM8 are supported right now, and
-- * only FORMAT_TYPE_I is handled. The isochronous data endpoint needs to
-- * be the first endpoint of the interface, and the optional synchronisation
-- * isochronous endpoint the second one.
-- *
-- * Mixer construction works as follows: The various TERMINAL and UNIT
-- * descriptors span a tree from the root (OUTPUT_TERMINAL) through the
-- * intermediate nodes (UNITs) to the leaves (INPUT_TERMINAL). We walk
-- * that tree in a depth first manner. FEATURE_UNITs may contribute volume,
-- * bass and treble sliders to the mixer, MIXER_UNITs volume sliders.
-- * The terminal type encoded in the INPUT_TERMINALs feeds a heuristic
-- * to determine "meaningful" OSS slider numbers, however we will see
-- * how well this works in practice. Other features are not used at the
-- * moment, they seem less often used. Also, it seems difficult at least
-- * to construct recording source switches from SELECTOR_UNITs, but
-- * since there are not many USB ADC's available, we leave that for later.
-- */
--
--/*****************************************************************************/
--
--#include <linux/kernel.h>
--#include <linux/slab.h>
--#include <linux/string.h>
--#include <linux/timer.h>
--#include <linux/sched.h>
--#include <linux/smp_lock.h>
--#include <linux/module.h>
--#include <linux/sound.h>
--#include <linux/soundcard.h>
--#include <linux/list.h>
--#include <linux/vmalloc.h>
--#include <linux/init.h>
--#include <linux/poll.h>
--#include <linux/bitops.h>
--#include <asm/uaccess.h>
--#include <asm/io.h>
--#include <linux/usb.h>
--
--#include "audio.h"
--
--/*
-- * Version Information
-- */
--#define DRIVER_VERSION "v1.0.0"
--#define DRIVER_AUTHOR "Alan Cox <alan@lxorguk.ukuu.org.uk>, Thomas Sailer (sailer@ife.ee.ethz.ch)"
--#define DRIVER_DESC "USB Audio Class driver"
--
--#define AUDIO_DEBUG 1
--
--#define SND_DEV_DSP16 5
--
--#define dprintk(x)
--
--/* --------------------------------------------------------------------- */
--
--/*
-- * Linked list of all audio devices...
-- */
--static struct list_head audiodevs = LIST_HEAD_INIT(audiodevs);
--static DECLARE_MUTEX(open_sem);
--
--/*
-- * wait queue for processes wanting to open an USB audio device
-- */
--static DECLARE_WAIT_QUEUE_HEAD(open_wait);
--
--
--#define MAXFORMATS MAX_ALT
--#define DMABUFSHIFT 17 /* 128k worth of DMA buffer */
--#define NRSGBUF (1U<<(DMABUFSHIFT-PAGE_SHIFT))
--
--/*
-- * This influences:
-- * - Latency
-- * - Interrupt rate
-- * - Synchronisation behaviour
-- * Don't touch this if you don't understand all of the above.
-- */
--#define DESCFRAMES 5
--#define SYNCFRAMES DESCFRAMES
--
--#define MIXFLG_STEREOIN 1
--#define MIXFLG_STEREOOUT 2
--
--struct mixerchannel {
-- __u16 value;
-- __u16 osschannel; /* number of the OSS channel */
-- __s16 minval, maxval;
-- __u16 slctunitid;
-- __u8 unitid;
-- __u8 selector;
-- __u8 chnum;
-- __u8 flags;
--};
--
--struct audioformat {
-- unsigned int format;
-- unsigned int sratelo;
-- unsigned int sratehi;
-- unsigned char altsetting;
-- unsigned char attributes;
--};
--
--struct dmabuf {
-- /* buffer data format */
-- unsigned int format;
-- unsigned int srate;
-- /* physical buffer */
-- unsigned char *sgbuf[NRSGBUF];
-- unsigned bufsize;
-- unsigned numfrag;
-- unsigned fragshift;
-- unsigned wrptr, rdptr;
-- unsigned total_bytes;
-- int count;
-- unsigned error; /* over/underrun */
-- wait_queue_head_t wait;
-- /* redundant, but makes calculations easier */
-- unsigned fragsize;
-- unsigned dmasize;
-- /* OSS stuff */
-- unsigned mapped:1;
-- unsigned ready:1;
-- unsigned ossfragshift;
-- int ossmaxfrags;
-- unsigned subdivision;
--};
--
--struct usb_audio_state;
--
--#define FLG_URB0RUNNING 1
--#define FLG_URB1RUNNING 2
--#define FLG_SYNC0RUNNING 4
--#define FLG_SYNC1RUNNING 8
--#define FLG_RUNNING 16
--#define FLG_CONNECTED 32
--
--struct my_data_urb {
-- struct urb *urb;
--};
--
--struct my_sync_urb {
-- struct urb *urb;
--};
--
--
--struct usb_audiodev {
-- struct list_head list;
-- struct usb_audio_state *state;
--
-- /* soundcore stuff */
-- int dev_audio;
--
-- /* wave stuff */
-- mode_t open_mode;
-- spinlock_t lock; /* DMA buffer access spinlock */
--
-- struct usbin {
-- int interface; /* Interface number, -1 means not used */
-- unsigned int format; /* USB data format */
-- unsigned int datapipe; /* the data input pipe */
-- unsigned int syncpipe; /* the synchronisation pipe - 0 for anything but adaptive IN mode */
-- unsigned int syncinterval; /* P for adaptive IN mode, 0 otherwise */
-- unsigned int freqn; /* nominal sampling rate in USB format, i.e. fs/1000 in Q10.14 */
-- unsigned int freqmax; /* maximum sampling rate, used for buffer management */
-- unsigned int phase; /* phase accumulator */
-- unsigned int flags; /* see FLG_ defines */
--
-- struct my_data_urb durb[2]; /* ISO descriptors for the data endpoint */
-- struct my_sync_urb surb[2]; /* ISO sync pipe descriptor if needed */
--
-- struct dmabuf dma;
-- } usbin;
--
-- struct usbout {
-- int interface; /* Interface number, -1 means not used */
-- unsigned int format; /* USB data format */
-- unsigned int datapipe; /* the data input pipe */
-- unsigned int syncpipe; /* the synchronisation pipe - 0 for anything but asynchronous OUT mode */
-- unsigned int syncinterval; /* P for asynchronous OUT mode, 0 otherwise */
-- unsigned int freqn; /* nominal sampling rate in USB format, i.e. fs/1000 in Q10.14 */
-- unsigned int freqm; /* momentary sampling rate in USB format, i.e. fs/1000 in Q10.14 */
-- unsigned int freqmax; /* maximum sampling rate, used for buffer management */
-- unsigned int phase; /* phase accumulator */
-- unsigned int flags; /* see FLG_ defines */
--
-- struct my_data_urb durb[2]; /* ISO descriptors for the data endpoint */
-- struct my_sync_urb surb[2]; /* ISO sync pipe descriptor if needed */
--
-- struct dmabuf dma;
-- } usbout;
--
--
-- unsigned int numfmtin, numfmtout;
-- struct audioformat fmtin[MAXFORMATS];
-- struct audioformat fmtout[MAXFORMATS];
--};
--
--struct usb_mixerdev {
-- struct list_head list;
-- struct usb_audio_state *state;
--
-- /* soundcore stuff */
-- int dev_mixer;
--
-- unsigned char iface; /* interface number of the AudioControl interface */
--
-- /* USB format descriptions */
-- unsigned int numch, modcnt;
--
-- /* mixch is last and gets allocated dynamically */
-- struct mixerchannel ch[0];
--};
--
--struct usb_audio_state {
-- struct list_head audiodev;
--
-- /* USB device */
-- struct usb_device *usbdev;
--
-- struct list_head audiolist;
-- struct list_head mixerlist;
--
-- unsigned count; /* usage counter; NOTE: the usb stack is also considered a user */
--};
--
--/* private audio format extensions */
--#define AFMT_STEREO 0x80000000
--#define AFMT_ISSTEREO(x) ((x) & AFMT_STEREO)
--#define AFMT_IS16BIT(x) ((x) & (AFMT_S16_LE|AFMT_S16_BE|AFMT_U16_LE|AFMT_U16_BE))
--#define AFMT_ISUNSIGNED(x) ((x) & (AFMT_U8|AFMT_U16_LE|AFMT_U16_BE))
--#define AFMT_BYTESSHIFT(x) ((AFMT_ISSTEREO(x) ? 1 : 0) + (AFMT_IS16BIT(x) ? 1 : 0))
--#define AFMT_BYTES(x) (1<<AFMT_BYTESSHFIT(x))
--
--/* --------------------------------------------------------------------- */
--
--static inline unsigned ld2(unsigned int x)
--{
-- unsigned r = 0;
--
-- if (x >= 0x10000) {
-- x >>= 16;
-- r += 16;
-- }
-- if (x >= 0x100) {
-- x >>= 8;
-- r += 8;
-- }
-- if (x >= 0x10) {
-- x >>= 4;
-- r += 4;
-- }
-- if (x >= 4) {
-- x >>= 2;
-- r += 2;
-- }
-- if (x >= 2)
-- r++;
-- return r;
--}
--
--/* --------------------------------------------------------------------- */
--
--/*
-- * OSS compatible ring buffer management. The ring buffer may be mmap'ed into
-- * an application address space.
-- *
-- * I first used the rvmalloc stuff copied from bttv. Alan Cox did not like it, so
-- * we now use an array of pointers to a single page each. This saves us the
-- * kernel page table manipulations, but we have to do a page table alike mechanism
-- * (though only one indirection) in software.
-- */
--
--static void dmabuf_release(struct dmabuf *db)
--{
-- unsigned int nr;
-- void *p;
--
-- for(nr = 0; nr < NRSGBUF; nr++) {
-- if (!(p = db->sgbuf[nr]))
-- continue;
-- ClearPageReserved(virt_to_page(p));
-- free_page((unsigned long)p);
-- db->sgbuf[nr] = NULL;
-- }
-- db->mapped = db->ready = 0;
--}
--
--static int dmabuf_init(struct dmabuf *db)
--{
-- unsigned int nr, bytepersec, bufs;
-- void *p;
--
-- /* initialize some fields */
-- db->rdptr = db->wrptr = db->total_bytes = db->count = db->error = 0;
-- /* calculate required buffer size */
-- bytepersec = db->srate << AFMT_BYTESSHIFT(db->format);
-- bufs = 1U << DMABUFSHIFT;
-- if (db->ossfragshift) {
-- if ((1000 << db->ossfragshift) < bytepersec)
-- db->fragshift = ld2(bytepersec/1000);
-- else
-- db->fragshift = db->ossfragshift;
-- } else {
-- db->fragshift = ld2(bytepersec/100/(db->subdivision ? db->subdivision : 1));
-- if (db->fragshift < 3)
-- db->fragshift = 3;
-- }
-- db->numfrag = bufs >> db->fragshift;
-- while (db->numfrag < 4 && db->fragshift > 3) {
-- db->fragshift--;
-- db->numfrag = bufs >> db->fragshift;
-- }
-- db->fragsize = 1 << db->fragshift;
-- if (db->ossmaxfrags >= 4 && db->ossmaxfrags < db->numfrag)
-- db->numfrag = db->ossmaxfrags;
-- db->dmasize = db->numfrag << db->fragshift;
-- for(nr = 0; nr < NRSGBUF; nr++) {
-- if (!db->sgbuf[nr]) {
-- p = (void *)get_zeroed_page(GFP_KERNEL);
-- if (!p)
-- return -ENOMEM;
-- db->sgbuf[nr] = p;
-- SetPageReserved(virt_to_page(p));
-- }
-- memset(db->sgbuf[nr], AFMT_ISUNSIGNED(db->format) ? 0x80 : 0, PAGE_SIZE);
-- if ((nr << PAGE_SHIFT) >= db->dmasize)
-- break;
-- }
-- db->bufsize = nr << PAGE_SHIFT;
-- db->ready = 1;
-- dprintk((KERN_DEBUG "usbaudio: dmabuf_init bytepersec %d bufs %d ossfragshift %d ossmaxfrags %d "
-- "fragshift %d fragsize %d numfrag %d dmasize %d bufsize %d fmt 0x%x srate %d\n",
-- bytepersec, bufs, db->ossfragshift, db->ossmaxfrags, db->fragshift, db->fragsize,
-- db->numfrag, db->dmasize, db->bufsize, db->format, db->srate));
-- return 0;
--}
--
--static int dmabuf_mmap(struct vm_area_struct *vma, struct dmabuf *db, unsigned long start, unsigned long size, pgprot_t prot)
--{
-- unsigned int nr;
--
-- if (!db->ready || db->mapped || (start | size) & (PAGE_SIZE-1) || size > db->bufsize)
-- return -EINVAL;
-- size >>= PAGE_SHIFT;
-- for(nr = 0; nr < size; nr++)
-- if (!db->sgbuf[nr])
-- return -EINVAL;
-- db->mapped = 1;
-- for(nr = 0; nr < size; nr++) {
-- unsigned long pfn;
--
-- pfn = virt_to_phys(db->sgbuf[nr]) >> PAGE_SHIFT;
-- if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, prot))
-- return -EAGAIN;
-- start += PAGE_SIZE;
-- }
-- return 0;
--}
--
--static void dmabuf_copyin(struct dmabuf *db, const void *buffer, unsigned int size)
--{
-- unsigned int pgrem, rem;
--
-- db->total_bytes += size;
-- for (;;) {
-- if (size <= 0)
-- return;
-- pgrem = ((~db->wrptr) & (PAGE_SIZE-1)) + 1;
-- if (pgrem > size)
-- pgrem = size;
-- rem = db->dmasize - db->wrptr;
-- if (pgrem > rem)
-- pgrem = rem;
-- memcpy((db->sgbuf[db->wrptr >> PAGE_SHIFT]) + (db->wrptr & (PAGE_SIZE-1)), buffer, pgrem);
-- size -= pgrem;
-- buffer += pgrem;
-- db->wrptr += pgrem;
-- if (db->wrptr >= db->dmasize)
-- db->wrptr = 0;
-- }
--}
--
--static void dmabuf_copyout(struct dmabuf *db, void *buffer, unsigned int size)
--{
-- unsigned int pgrem, rem;
--
-- db->total_bytes += size;
-- for (;;) {
-- if (size <= 0)
-- return;
-- pgrem = ((~db->rdptr) & (PAGE_SIZE-1)) + 1;
-- if (pgrem > size)
-- pgrem = size;
-- rem = db->dmasize - db->rdptr;
-- if (pgrem > rem)
-- pgrem = rem;
-- memcpy(buffer, (db->sgbuf[db->rdptr >> PAGE_SHIFT]) + (db->rdptr & (PAGE_SIZE-1)), pgrem);
-- size -= pgrem;
-- buffer += pgrem;
-- db->rdptr += pgrem;
-- if (db->rdptr >= db->dmasize)
-- db->rdptr = 0;
-- }
--}
--
--static int dmabuf_copyin_user(struct dmabuf *db, unsigned int ptr, const void __user *buffer, unsigned int size)
--{
-- unsigned int pgrem, rem;
--
-- if (!db->ready || db->mapped)
-- return -EINVAL;
-- for (;;) {
-- if (size <= 0)
-- return 0;
-- pgrem = ((~ptr) & (PAGE_SIZE-1)) + 1;
-- if (pgrem > size)
-- pgrem = size;
-- rem = db->dmasize - ptr;
-- if (pgrem > rem)
-- pgrem = rem;
-- if (copy_from_user((db->sgbuf[ptr >> PAGE_SHIFT]) + (ptr & (PAGE_SIZE-1)), buffer, pgrem))
-- return -EFAULT;
-- size -= pgrem;
-- buffer += pgrem;
-- ptr += pgrem;
-- if (ptr >= db->dmasize)
-- ptr = 0;
-- }
--}
--
--static int dmabuf_copyout_user(struct dmabuf *db, unsigned int ptr, void __user *buffer, unsigned int size)
--{
-- unsigned int pgrem, rem;
--
-- if (!db->ready || db->mapped)
-- return -EINVAL;
-- for (;;) {
-- if (size <= 0)
-- return 0;
-- pgrem = ((~ptr) & (PAGE_SIZE-1)) + 1;
-- if (pgrem > size)
-- pgrem = size;
-- rem = db->dmasize - ptr;
-- if (pgrem > rem)
-- pgrem = rem;
-- if (copy_to_user(buffer, (db->sgbuf[ptr >> PAGE_SHIFT]) + (ptr & (PAGE_SIZE-1)), pgrem))
-- return -EFAULT;
-- size -= pgrem;
-- buffer += pgrem;
-- ptr += pgrem;
-- if (ptr >= db->dmasize)
-- ptr = 0;
-- }
--}
--
--/* --------------------------------------------------------------------- */
--/*
-- * USB I/O code. We do sample format conversion if necessary
-- */
--
--static void usbin_stop(struct usb_audiodev *as)
--{
-- struct usbin *u = &as->usbin;
-- unsigned long flags;
-- unsigned int i, notkilled = 1;
--
-- spin_lock_irqsave(&as->lock, flags);
-- u->flags &= ~FLG_RUNNING;
-- i = u->flags;
-- spin_unlock_irqrestore(&as->lock, flags);
-- while (i & (FLG_URB0RUNNING|FLG_URB1RUNNING|FLG_SYNC0RUNNING|FLG_SYNC1RUNNING)) {
-- if (notkilled)
-- schedule_timeout_interruptible(1);
-- else
-- schedule_timeout_uninterruptible(1);
-- spin_lock_irqsave(&as->lock, flags);
-- i = u->flags;
-- spin_unlock_irqrestore(&as->lock, flags);
-- if (notkilled && signal_pending(current)) {
-- if (i & FLG_URB0RUNNING)
-- usb_kill_urb(u->durb[0].urb);
-- if (i & FLG_URB1RUNNING)
-- usb_kill_urb(u->durb[1].urb);
-- if (i & FLG_SYNC0RUNNING)
-- usb_kill_urb(u->surb[0].urb);
-- if (i & FLG_SYNC1RUNNING)
-- usb_kill_urb(u->surb[1].urb);
-- notkilled = 0;
-- }
-- }
-- set_current_state(TASK_RUNNING);
-- kfree(u->durb[0].urb->transfer_buffer);
-- kfree(u->durb[1].urb->transfer_buffer);
-- kfree(u->surb[0].urb->transfer_buffer);
-- kfree(u->surb[1].urb->transfer_buffer);
-- u->durb[0].urb->transfer_buffer = u->durb[1].urb->transfer_buffer =
-- u->surb[0].urb->transfer_buffer = u->surb[1].urb->transfer_buffer = NULL;
--}
--
--static inline void usbin_release(struct usb_audiodev *as)
--{
-- usbin_stop(as);
--}
--
--static void usbin_disc(struct usb_audiodev *as)
--{
-- struct usbin *u = &as->usbin;
--
-- unsigned long flags;
--
-- spin_lock_irqsave(&as->lock, flags);
-- u->flags &= ~(FLG_RUNNING | FLG_CONNECTED);
-- spin_unlock_irqrestore(&as->lock, flags);
-- usbin_stop(as);
--}
--
--static void conversion(const void *ibuf, unsigned int ifmt, void *obuf, unsigned int ofmt, void *tmp, unsigned int scnt)
--{
-- unsigned int cnt, i;
-- __s16 *sp, *sp2, s;
-- unsigned char *bp;
--
-- cnt = scnt;
-- if (AFMT_ISSTEREO(ifmt))
-- cnt <<= 1;
-- sp = ((__s16 *)tmp) + cnt;
-- switch (ifmt & ~AFMT_STEREO) {
-- case AFMT_U8:
-- for (bp = ((unsigned char *)ibuf)+cnt, i = 0; i < cnt; i++) {
-- bp--;
-- sp--;
-- *sp = (*bp ^ 0x80) << 8;
-- }
-- break;
--
-- case AFMT_S8:
-- for (bp = ((unsigned char *)ibuf)+cnt, i = 0; i < cnt; i++) {
-- bp--;
-- sp--;
-- *sp = *bp << 8;
-- }
-- break;
--
-- case AFMT_U16_LE:
-- for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
-- bp -= 2;
-- sp--;
-- *sp = (bp[0] | (bp[1] << 8)) ^ 0x8000;
-- }
-- break;
--
-- case AFMT_U16_BE:
-- for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
-- bp -= 2;
-- sp--;
-- *sp = (bp[1] | (bp[0] << 8)) ^ 0x8000;
-- }
-- break;
--
-- case AFMT_S16_LE:
-- for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
-- bp -= 2;
-- sp--;
-- *sp = bp[0] | (bp[1] << 8);
-- }
-- break;
--
-- case AFMT_S16_BE:
-- for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
-- bp -= 2;
-- sp--;
-- *sp = bp[1] | (bp[0] << 8);
-- }
-- break;
-- }
-- if (!AFMT_ISSTEREO(ifmt) && AFMT_ISSTEREO(ofmt)) {
-- /* expand from mono to stereo */
-- for (sp = ((__s16 *)tmp)+scnt, sp2 = ((__s16 *)tmp)+2*scnt, i = 0; i < scnt; i++) {
-- sp--;
-- sp2 -= 2;
-- sp2[0] = sp2[1] = sp[0];
-- }
-- }
-- if (AFMT_ISSTEREO(ifmt) && !AFMT_ISSTEREO(ofmt)) {
-- /* contract from stereo to mono */
-- for (sp = sp2 = ((__s16 *)tmp), i = 0; i < scnt; i++, sp++, sp2 += 2)
-- sp[0] = (sp2[0] + sp2[1]) >> 1;
-- }
-- cnt = scnt;
-- if (AFMT_ISSTEREO(ofmt))
-- cnt <<= 1;
-- sp = ((__s16 *)tmp);
-- bp = ((unsigned char *)obuf);
-- switch (ofmt & ~AFMT_STEREO) {
-- case AFMT_U8:
-- for (i = 0; i < cnt; i++, sp++, bp++)
-- *bp = (*sp >> 8) ^ 0x80;
-- break;
--
-- case AFMT_S8:
-- for (i = 0; i < cnt; i++, sp++, bp++)
-- *bp = *sp >> 8;
-- break;
--
-- case AFMT_U16_LE:
-- for (i = 0; i < cnt; i++, sp++, bp += 2) {
-- s = *sp;
-- bp[0] = s;
-- bp[1] = (s >> 8) ^ 0x80;
-- }
-- break;
--
-- case AFMT_U16_BE:
-- for (i = 0; i < cnt; i++, sp++, bp += 2) {
-- s = *sp;
-- bp[1] = s;
-- bp[0] = (s >> 8) ^ 0x80;
-- }
-- break;
--
-- case AFMT_S16_LE:
-- for (i = 0; i < cnt; i++, sp++, bp += 2) {
-- s = *sp;
-- bp[0] = s;
-- bp[1] = s >> 8;
-- }
-- break;
--
-- case AFMT_S16_BE:
-- for (i = 0; i < cnt; i++, sp++, bp += 2) {
-- s = *sp;
-- bp[1] = s;
-- bp[0] = s >> 8;
-- }
-- break;
-- }
--
--}
--
--static void usbin_convert(struct usbin *u, unsigned char *buffer, unsigned int samples)
--{
-- union {
-- __s16 s[64];
-- unsigned char b[0];
-- } tmp;
-- unsigned int scnt, maxs, ufmtsh, dfmtsh;
--
-- ufmtsh = AFMT_BYTESSHIFT(u->format);
-- dfmtsh = AFMT_BYTESSHIFT(u->dma.format);
-- maxs = (AFMT_ISSTEREO(u->dma.format | u->format)) ? 32 : 64;
-- while (samples > 0) {
-- scnt = samples;
-- if (scnt > maxs)
-- scnt = maxs;
-- conversion(buffer, u->format, tmp.b, u->dma.format, tmp.b, scnt);
-- dmabuf_copyin(&u->dma, tmp.b, scnt << dfmtsh);
-- buffer += scnt << ufmtsh;
-- samples -= scnt;
-- }
--}
--
--static int usbin_prepare_desc(struct usbin *u, struct urb *urb)
--{
-- unsigned int i, maxsize, offs;
--
-- maxsize = (u->freqmax + 0x3fff) >> (14 - AFMT_BYTESSHIFT(u->format));
-- //printk(KERN_DEBUG "usbin_prepare_desc: maxsize %d freq 0x%x format 0x%x\n", maxsize, u->freqn, u->format);
-- for (i = offs = 0; i < DESCFRAMES; i++, offs += maxsize) {
-- urb->iso_frame_desc[i].length = maxsize;
-- urb->iso_frame_desc[i].offset = offs;
-- }
-- urb->interval = 1;
-- return 0;
--}
--
--/*
-- * return value: 0 if descriptor should be restarted, -1 otherwise
-- * convert sample format on the fly if necessary
-- */
--static int usbin_retire_desc(struct usbin *u, struct urb *urb)
--{
-- unsigned int i, ufmtsh, dfmtsh, err = 0, cnt, scnt, dmafree;
-- unsigned char *cp;
--
-- ufmtsh = AFMT_BYTESSHIFT(u->format);
-- dfmtsh = AFMT_BYTESSHIFT(u->dma.format);
-- for (i = 0; i < DESCFRAMES; i++) {
-- cp = ((unsigned char *)urb->transfer_buffer) + urb->iso_frame_desc[i].offset;
-- if (urb->iso_frame_desc[i].status) {
-- dprintk((KERN_DEBUG "usbin_retire_desc: frame %u status %d\n", i, urb->iso_frame_desc[i].status));
-- continue;
-- }
-- scnt = urb->iso_frame_desc[i].actual_length >> ufmtsh;
-- if (!scnt)
-- continue;
-- cnt = scnt << dfmtsh;
-- if (!u->dma.mapped) {
-- dmafree = u->dma.dmasize - u->dma.count;
-- if (cnt > dmafree) {
-- scnt = dmafree >> dfmtsh;
-- cnt = scnt << dfmtsh;
-- err++;
-- }
-- }
-- u->dma.count += cnt;
-- if (u->format == u->dma.format) {
-- /* we do not need format conversion */
-- dprintk((KERN_DEBUG "usbaudio: no sample format conversion\n"));
-- dmabuf_copyin(&u->dma, cp, cnt);
-- } else {
-- /* we need sampling format conversion */
-- dprintk((KERN_DEBUG "usbaudio: sample format conversion %x != %x\n", u->format, u->dma.format));
-- usbin_convert(u, cp, scnt);
-- }
-- }
-- if (err)
-- u->dma.error++;
-- if (u->dma.count >= (signed)u->dma.fragsize)
-- wake_up(&u->dma.wait);
-- return err ? -1 : 0;
--}
--
--static void usbin_completed(struct urb *urb, struct pt_regs *regs)
--{
-- struct usb_audiodev *as = (struct usb_audiodev *)urb->context;
-- struct usbin *u = &as->usbin;
-- unsigned long flags;
-- unsigned int mask;
-- int suret = 0;
--
--#if 0
-- printk(KERN_DEBUG "usbin_completed: status %d errcnt %d flags 0x%x\n", urb->status, urb->error_count, u->flags);
--#endif
-- if (urb == u->durb[0].urb)
-- mask = FLG_URB0RUNNING;
-- else if (urb == u->durb[1].urb)
-- mask = FLG_URB1RUNNING;
-- else {
-- mask = 0;
-- printk(KERN_ERR "usbin_completed: panic: unknown URB\n");
-- }
-- urb->dev = as->state->usbdev;
-- spin_lock_irqsave(&as->lock, flags);
-- if (!usbin_retire_desc(u, urb) &&
-- u->flags & FLG_RUNNING &&
-- !usbin_prepare_desc(u, urb) &&
-- (suret = usb_submit_urb(urb, GFP_ATOMIC)) == 0) {
-- u->flags |= mask;
-- } else {
-- u->flags &= ~(mask | FLG_RUNNING);
-- wake_up(&u->dma.wait);
-- printk(KERN_DEBUG "usbin_completed: descriptor not restarted (usb_submit_urb: %d)\n", suret);
-- }
-- spin_unlock_irqrestore(&as->lock, flags);
--}
--
--/*
-- * we output sync data
-- */
--static int usbin_sync_prepare_desc(struct usbin *u, struct urb *urb)
--{
-- unsigned char *cp = urb->transfer_buffer;
-- unsigned int i, offs;
--
-- for (i = offs = 0; i < SYNCFRAMES; i++, offs += 3, cp += 3) {
-- urb->iso_frame_desc[i].length = 3;
-- urb->iso_frame_desc[i].offset = offs;
-- cp[0] = u->freqn;
-- cp[1] = u->freqn >> 8;
-- cp[2] = u->freqn >> 16;
-- }
-- urb->interval = 1;
-- return 0;
--}
--
--/*
-- * return value: 0 if descriptor should be restarted, -1 otherwise
-- */
--static int usbin_sync_retire_desc(struct usbin *u, struct urb *urb)
--{
-- unsigned int i;
--
-- for (i = 0; i < SYNCFRAMES; i++)
-- if (urb->iso_frame_desc[0].status)
-- dprintk((KERN_DEBUG "usbin_sync_retire_desc: frame %u status %d\n", i, urb->iso_frame_desc[i].status));
-- return 0;
--}
--
--static void usbin_sync_completed(struct urb *urb, struct pt_regs *regs)
--{
-- struct usb_audiodev *as = (struct usb_audiodev *)urb->context;
-- struct usbin *u = &as->usbin;
-- unsigned long flags;
-- unsigned int mask;
-- int suret = 0;
--
--#if 0
-- printk(KERN_DEBUG "usbin_sync_completed: status %d errcnt %d flags 0x%x\n", urb->status, urb->error_count, u->flags);
--#endif
-- if (urb == u->surb[0].urb)
-- mask = FLG_SYNC0RUNNING;
-- else if (urb == u->surb[1].urb)
-- mask = FLG_SYNC1RUNNING;
-- else {
-- mask = 0;
-- printk(KERN_ERR "usbin_sync_completed: panic: unknown URB\n");
-- }
-- urb->dev = as->state->usbdev;
-- spin_lock_irqsave(&as->lock, flags);
-- if (!usbin_sync_retire_desc(u, urb) &&
-- u->flags & FLG_RUNNING &&
-- !usbin_sync_prepare_desc(u, urb) &&
-- (suret = usb_submit_urb(urb, GFP_ATOMIC)) == 0) {
-- u->flags |= mask;
-- } else {
-- u->flags &= ~(mask | FLG_RUNNING);
-- wake_up(&u->dma.wait);
-- dprintk((KERN_DEBUG "usbin_sync_completed: descriptor not restarted (usb_submit_urb: %d)\n", suret));
-- }
-- spin_unlock_irqrestore(&as->lock, flags);
--}
--
--static int usbin_start(struct usb_audiodev *as)
--{
-- struct usb_device *dev = as->state->usbdev;
-- struct usbin *u = &as->usbin;
-- struct urb *urb;
-- unsigned long flags;
-- unsigned int maxsze, bufsz;
--
--#if 0
-- printk(KERN_DEBUG "usbin_start: device %d ufmt 0x%08x dfmt 0x%08x srate %d\n",
-- dev->devnum, u->format, u->dma.format, u->dma.srate);
--#endif
-- /* allocate USB storage if not already done */
-- spin_lock_irqsave(&as->lock, flags);
-- if (!(u->flags & FLG_CONNECTED)) {
-- spin_unlock_irqrestore(&as->lock, flags);
-- return -EIO;
-- }
-- if (!(u->flags & FLG_RUNNING)) {
-- spin_unlock_irqrestore(&as->lock, flags);
-- u->freqn = ((u->dma.srate << 11) + 62) / 125; /* this will overflow at approx 2MSPS */
-- u->freqmax = u->freqn + (u->freqn >> 2);
-- u->phase = 0;
-- maxsze = (u->freqmax + 0x3fff) >> (14 - AFMT_BYTESSHIFT(u->format));
-- bufsz = DESCFRAMES * maxsze;
-- kfree(u->durb[0].urb->transfer_buffer);
-- u->durb[0].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
-- u->durb[0].urb->transfer_buffer_length = bufsz;
-- kfree(u->durb[1].urb->transfer_buffer);
-- u->durb[1].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
-- u->durb[1].urb->transfer_buffer_length = bufsz;
-- if (u->syncpipe) {
-- kfree(u->surb[0].urb->transfer_buffer);
-- u->surb[0].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
-- u->surb[0].urb->transfer_buffer_length = 3*SYNCFRAMES;
-- kfree(u->surb[1].urb->transfer_buffer);
-- u->surb[1].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
-- u->surb[1].urb->transfer_buffer_length = 3*SYNCFRAMES;
-- }
-- if (!u->durb[0].urb->transfer_buffer || !u->durb[1].urb->transfer_buffer ||
-- (u->syncpipe && (!u->surb[0].urb->transfer_buffer || !u->surb[1].urb->transfer_buffer))) {
-- printk(KERN_ERR "usbaudio: cannot start playback device %d\n", dev->devnum);
-- return 0;
-- }
-- spin_lock_irqsave(&as->lock, flags);
-- }
-- if (u->dma.count >= u->dma.dmasize && !u->dma.mapped) {
-- spin_unlock_irqrestore(&as->lock, flags);
-- return 0;
-- }
-- u->flags |= FLG_RUNNING;
-- if (!(u->flags & FLG_URB0RUNNING)) {
-- urb = u->durb[0].urb;
-- urb->dev = dev;
-- urb->pipe = u->datapipe;
-- urb->transfer_flags = URB_ISO_ASAP;
-- urb->number_of_packets = DESCFRAMES;
-- urb->context = as;
-- urb->complete = usbin_completed;
-- if (!usbin_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_KERNEL))
-- u->flags |= FLG_URB0RUNNING;
-- else
-- u->flags &= ~FLG_RUNNING;
-- }
-- if (u->flags & FLG_RUNNING && !(u->flags & FLG_URB1RUNNING)) {
-- urb = u->durb[1].urb;
-- urb->dev = dev;
-- urb->pipe = u->datapipe;
-- urb->transfer_flags = URB_ISO_ASAP;
-- urb->number_of_packets = DESCFRAMES;
-- urb->context = as;
-- urb->complete = usbin_completed;
-- if (!usbin_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_KERNEL))
-- u->flags |= FLG_URB1RUNNING;
-- else
-- u->flags &= ~FLG_RUNNING;
-- }
-- if (u->syncpipe) {
-- if (u->flags & FLG_RUNNING && !(u->flags & FLG_SYNC0RUNNING)) {
-- urb = u->surb[0].urb;
-- urb->dev = dev;
-- urb->pipe = u->syncpipe;
-- urb->transfer_flags = URB_ISO_ASAP;
-- urb->number_of_packets = SYNCFRAMES;
-- urb->context = as;
-- urb->complete = usbin_sync_completed;
-- /* stride: u->syncinterval */
-- if (!usbin_sync_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_KERNEL))
-- u->flags |= FLG_SYNC0RUNNING;
-- else
-- u->flags &= ~FLG_RUNNING;
-- }
-- if (u->flags & FLG_RUNNING && !(u->flags & FLG_SYNC1RUNNING)) {
-- urb = u->surb[1].urb;
-- urb->dev = dev;
-- urb->pipe = u->syncpipe;
-- urb->transfer_flags = URB_ISO_ASAP;
-- urb->number_of_packets = SYNCFRAMES;
-- urb->context = as;
-- urb->complete = usbin_sync_completed;
-- /* stride: u->syncinterval */
-- if (!usbin_sync_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_KERNEL))
-- u->flags |= FLG_SYNC1RUNNING;
-- else
-- u->flags &= ~FLG_RUNNING;
-- }
-- }
-- spin_unlock_irqrestore(&as->lock, flags);
-- return 0;
--}
--
--static void usbout_stop(struct usb_audiodev *as)
--{
-- struct usbout *u = &as->usbout;
-- unsigned long flags;
-- unsigned int i, notkilled = 1;
--
-- spin_lock_irqsave(&as->lock, flags);
-- u->flags &= ~FLG_RUNNING;
-- i = u->flags;
-- spin_unlock_irqrestore(&as->lock, flags);
-- while (i & (FLG_URB0RUNNING|FLG_URB1RUNNING|FLG_SYNC0RUNNING|FLG_SYNC1RUNNING)) {
-- if (notkilled)
-- schedule_timeout_interruptible(1);
-- else
-- schedule_timeout_uninterruptible(1);
-- spin_lock_irqsave(&as->lock, flags);
-- i = u->flags;
-- spin_unlock_irqrestore(&as->lock, flags);
-- if (notkilled && signal_pending(current)) {
-- if (i & FLG_URB0RUNNING)
-- usb_kill_urb(u->durb[0].urb);
-- if (i & FLG_URB1RUNNING)
-- usb_kill_urb(u->durb[1].urb);
-- if (i & FLG_SYNC0RUNNING)
-- usb_kill_urb(u->surb[0].urb);
-- if (i & FLG_SYNC1RUNNING)
-- usb_kill_urb(u->surb[1].urb);
-- notkilled = 0;
-- }
-- }
-- set_current_state(TASK_RUNNING);
-- kfree(u->durb[0].urb->transfer_buffer);
-- kfree(u->durb[1].urb->transfer_buffer);
-- kfree(u->surb[0].urb->transfer_buffer);
-- kfree(u->surb[1].urb->transfer_buffer);
-- u->durb[0].urb->transfer_buffer = u->durb[1].urb->transfer_buffer =
-- u->surb[0].urb->transfer_buffer = u->surb[1].urb->transfer_buffer = NULL;
--}
--
--static inline void usbout_release(struct usb_audiodev *as)
--{
-- usbout_stop(as);
--}
--
--static void usbout_disc(struct usb_audiodev *as)
--{
-- struct usbout *u = &as->usbout;
-- unsigned long flags;
--
-- spin_lock_irqsave(&as->lock, flags);
-- u->flags &= ~(FLG_RUNNING | FLG_CONNECTED);
-- spin_unlock_irqrestore(&as->lock, flags);
-- usbout_stop(as);
--}
--
--static void usbout_convert(struct usbout *u, unsigned char *buffer, unsigned int samples)
--{
-- union {
-- __s16 s[64];
-- unsigned char b[0];
-- } tmp;
-- unsigned int scnt, maxs, ufmtsh, dfmtsh;
--
-- ufmtsh = AFMT_BYTESSHIFT(u->format);
-- dfmtsh = AFMT_BYTESSHIFT(u->dma.format);
-- maxs = (AFMT_ISSTEREO(u->dma.format | u->format)) ? 32 : 64;
-- while (samples > 0) {
-- scnt = samples;
-- if (scnt > maxs)
-- scnt = maxs;
-- dmabuf_copyout(&u->dma, tmp.b, scnt << dfmtsh);
-- conversion(tmp.b, u->dma.format, buffer, u->format, tmp.b, scnt);
-- buffer += scnt << ufmtsh;
-- samples -= scnt;
-- }
--}
--
--static int usbout_prepare_desc(struct usbout *u, struct urb *urb)
--{
-- unsigned int i, ufmtsh, dfmtsh, err = 0, cnt, scnt, offs;
-- unsigned char *cp = urb->transfer_buffer;
--
-- ufmtsh = AFMT_BYTESSHIFT(u->format);
-- dfmtsh = AFMT_BYTESSHIFT(u->dma.format);
-- for (i = offs = 0; i < DESCFRAMES; i++) {
-- urb->iso_frame_desc[i].offset = offs;
-- u->phase = (u->phase & 0x3fff) + u->freqm;
-- scnt = u->phase >> 14;
-- if (!scnt) {
-- urb->iso_frame_desc[i].length = 0;
-- continue;
-- }
-- cnt = scnt << dfmtsh;
-- if (!u->dma.mapped) {
-- if (cnt > u->dma.count) {
-- scnt = u->dma.count >> dfmtsh;
-- cnt = scnt << dfmtsh;
-- err++;
-- }
-- u->dma.count -= cnt;
-- } else
-- u->dma.count += cnt;
-- if (u->format == u->dma.format) {
-- /* we do not need format conversion */
-- dmabuf_copyout(&u->dma, cp, cnt);
-- } else {
-- /* we need sampling format conversion */
-- usbout_convert(u, cp, scnt);
-- }
-- cnt = scnt << ufmtsh;
-- urb->iso_frame_desc[i].length = cnt;
-- offs += cnt;
-- cp += cnt;
-- }
-- urb->interval = 1;
-- if (err)
-- u->dma.error++;
-- if (u->dma.mapped) {
-- if (u->dma.count >= (signed)u->dma.fragsize)
-- wake_up(&u->dma.wait);
-- } else {
-- if ((signed)u->dma.dmasize >= u->dma.count + (signed)u->dma.fragsize)
-- wake_up(&u->dma.wait);
-- }
-- return err ? -1 : 0;
--}
--
--/*
-- * return value: 0 if descriptor should be restarted, -1 otherwise
-- */
--static int usbout_retire_desc(struct usbout *u, struct urb *urb)
--{
-- unsigned int i;
--
-- for (i = 0; i < DESCFRAMES; i++) {
-- if (urb->iso_frame_desc[i].status) {
-- dprintk((KERN_DEBUG "usbout_retire_desc: frame %u status %d\n", i, urb->iso_frame_desc[i].status));
-- continue;
-- }
-- }
-- return 0;
--}
--
--static void usbout_completed(struct urb *urb, struct pt_regs *regs)
--{
-- struct usb_audiodev *as = (struct usb_audiodev *)urb->context;
-- struct usbout *u = &as->usbout;
-- unsigned long flags;
-- unsigned int mask;
-- int suret = 0;
--
--#if 0
-- printk(KERN_DEBUG "usbout_completed: status %d errcnt %d flags 0x%x\n", urb->status, urb->error_count, u->flags);
--#endif
-- if (urb == u->durb[0].urb)
-- mask = FLG_URB0RUNNING;
-- else if (urb == u->durb[1].urb)
-- mask = FLG_URB1RUNNING;
-- else {
-- mask = 0;
-- printk(KERN_ERR "usbout_completed: panic: unknown URB\n");
-- }
-- urb->dev = as->state->usbdev;
-- spin_lock_irqsave(&as->lock, flags);
-- if (!usbout_retire_desc(u, urb) &&
-- u->flags & FLG_RUNNING &&
-- !usbout_prepare_desc(u, urb) &&
-- (suret = usb_submit_urb(urb, GFP_ATOMIC)) == 0) {
-- u->flags |= mask;
-- } else {
-- u->flags &= ~(mask | FLG_RUNNING);
-- wake_up(&u->dma.wait);
-- dprintk((KERN_DEBUG "usbout_completed: descriptor not restarted (usb_submit_urb: %d)\n", suret));
-- }
-- spin_unlock_irqrestore(&as->lock, flags);
--}
--
--static int usbout_sync_prepare_desc(struct usbout *u, struct urb *urb)
--{
-- unsigned int i, offs;
--
-- for (i = offs = 0; i < SYNCFRAMES; i++, offs += 3) {
-- urb->iso_frame_desc[i].length = 3;
-- urb->iso_frame_desc[i].offset = offs;
-- }
-- urb->interval = 1;
-- return 0;
--}
--
--/*
-- * return value: 0 if descriptor should be restarted, -1 otherwise
-- */
--static int usbout_sync_retire_desc(struct usbout *u, struct urb *urb)
--{
-- unsigned char *cp = urb->transfer_buffer;
-- unsigned int f, i;
--
-- for (i = 0; i < SYNCFRAMES; i++, cp += 3) {
-- if (urb->iso_frame_desc[i].status) {
-- dprintk((KERN_DEBUG "usbout_sync_retire_desc: frame %u status %d\n", i, urb->iso_frame_desc[i].status));
-- continue;
-- }
-- if (urb->iso_frame_desc[i].actual_length < 3) {
-- dprintk((KERN_DEBUG "usbout_sync_retire_desc: frame %u length %d\n", i, urb->iso_frame_desc[i].actual_length));
-- continue;
-- }
-- f = cp[0] | (cp[1] << 8) | (cp[2] << 16);
-- if (abs(f - u->freqn) > (u->freqn >> 3) || f > u->freqmax) {
-- printk(KERN_WARNING "usbout_sync_retire_desc: requested frequency %u (nominal %u) out of range!\n", f, u->freqn);
-- continue;
-- }
-- u->freqm = f;
-- }
-- return 0;
--}
--
--static void usbout_sync_completed(struct urb *urb, struct pt_regs *regs)
--{
-- struct usb_audiodev *as = (struct usb_audiodev *)urb->context;
-- struct usbout *u = &as->usbout;
-- unsigned long flags;
-- unsigned int mask;
-- int suret = 0;
--
--#if 0
-- printk(KERN_DEBUG "usbout_sync_completed: status %d errcnt %d flags 0x%x\n", urb->status, urb->error_count, u->flags);
--#endif
-- if (urb == u->surb[0].urb)
-- mask = FLG_SYNC0RUNNING;
-- else if (urb == u->surb[1].urb)
-- mask = FLG_SYNC1RUNNING;
-- else {
-- mask = 0;
-- printk(KERN_ERR "usbout_sync_completed: panic: unknown URB\n");
-- }
-- urb->dev = as->state->usbdev;
-- spin_lock_irqsave(&as->lock, flags);
-- if (!usbout_sync_retire_desc(u, urb) &&
-- u->flags & FLG_RUNNING &&
-- !usbout_sync_prepare_desc(u, urb) &&
-- (suret = usb_submit_urb(urb, GFP_ATOMIC)) == 0) {
-- u->flags |= mask;
-- } else {
-- u->flags &= ~(mask | FLG_RUNNING);
-- wake_up(&u->dma.wait);
-- dprintk((KERN_DEBUG "usbout_sync_completed: descriptor not restarted (usb_submit_urb: %d)\n", suret));
-- }
-- spin_unlock_irqrestore(&as->lock, flags);
--}
--
--static int usbout_start(struct usb_audiodev *as)
--{
-- struct usb_device *dev = as->state->usbdev;
-- struct usbout *u = &as->usbout;
-- struct urb *urb;
-- unsigned long flags;
-- unsigned int maxsze, bufsz;
--
--#if 0
-- printk(KERN_DEBUG "usbout_start: device %d ufmt 0x%08x dfmt 0x%08x srate %d\n",
-- dev->devnum, u->format, u->dma.format, u->dma.srate);
--#endif
-- /* allocate USB storage if not already done */
-- spin_lock_irqsave(&as->lock, flags);
-- if (!(u->flags & FLG_CONNECTED)) {
-- spin_unlock_irqrestore(&as->lock, flags);
-- return -EIO;
-- }
-- if (!(u->flags & FLG_RUNNING)) {
-- spin_unlock_irqrestore(&as->lock, flags);
-- u->freqn = u->freqm = ((u->dma.srate << 11) + 62) / 125; /* this will overflow at approx 2MSPS */
-- u->freqmax = u->freqn + (u->freqn >> 2);
-- u->phase = 0;
-- maxsze = (u->freqmax + 0x3fff) >> (14 - AFMT_BYTESSHIFT(u->format));
-- bufsz = DESCFRAMES * maxsze;
-- kfree(u->durb[0].urb->transfer_buffer);
-- u->durb[0].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
-- u->durb[0].urb->transfer_buffer_length = bufsz;
-- kfree(u->durb[1].urb->transfer_buffer);
-- u->durb[1].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
-- u->durb[1].urb->transfer_buffer_length = bufsz;
-- if (u->syncpipe) {
-- kfree(u->surb[0].urb->transfer_buffer);
-- u->surb[0].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
-- u->surb[0].urb->transfer_buffer_length = 3*SYNCFRAMES;
-- kfree(u->surb[1].urb->transfer_buffer);
-- u->surb[1].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
-- u->surb[1].urb->transfer_buffer_length = 3*SYNCFRAMES;
-- }
-- if (!u->durb[0].urb->transfer_buffer || !u->durb[1].urb->transfer_buffer ||
-- (u->syncpipe && (!u->surb[0].urb->transfer_buffer || !u->surb[1].urb->transfer_buffer))) {
-- printk(KERN_ERR "usbaudio: cannot start playback device %d\n", dev->devnum);
-- return 0;
-- }
-- spin_lock_irqsave(&as->lock, flags);
-- }
-- if (u->dma.count <= 0 && !u->dma.mapped) {
-- spin_unlock_irqrestore(&as->lock, flags);
-- return 0;
-- }
-- u->flags |= FLG_RUNNING;
-- if (!(u->flags & FLG_URB0RUNNING)) {
-- urb = u->durb[0].urb;
-- urb->dev = dev;
-- urb->pipe = u->datapipe;
-- urb->transfer_flags = URB_ISO_ASAP;
-- urb->number_of_packets = DESCFRAMES;
-- urb->context = as;
-- urb->complete = usbout_completed;
-- if (!usbout_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_ATOMIC))
-- u->flags |= FLG_URB0RUNNING;
-- else
-- u->flags &= ~FLG_RUNNING;
-- }
-- if (u->flags & FLG_RUNNING && !(u->flags & FLG_URB1RUNNING)) {
-- urb = u->durb[1].urb;
-- urb->dev = dev;
-- urb->pipe = u->datapipe;
-- urb->transfer_flags = URB_ISO_ASAP;
-- urb->number_of_packets = DESCFRAMES;
-- urb->context = as;
-- urb->complete = usbout_completed;
-- if (!usbout_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_ATOMIC))
-- u->flags |= FLG_URB1RUNNING;
-- else
-- u->flags &= ~FLG_RUNNING;
-- }
-- if (u->syncpipe) {
-- if (u->flags & FLG_RUNNING && !(u->flags & FLG_SYNC0RUNNING)) {
-- urb = u->surb[0].urb;
-- urb->dev = dev;
-- urb->pipe = u->syncpipe;
-- urb->transfer_flags = URB_ISO_ASAP;
-- urb->number_of_packets = SYNCFRAMES;
-- urb->context = as;
-- urb->complete = usbout_sync_completed;
-- /* stride: u->syncinterval */
-- if (!usbout_sync_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_ATOMIC))
-- u->flags |= FLG_SYNC0RUNNING;
-- else
-- u->flags &= ~FLG_RUNNING;
-- }
-- if (u->flags & FLG_RUNNING && !(u->flags & FLG_SYNC1RUNNING)) {
-- urb = u->surb[1].urb;
-- urb->dev = dev;
-- urb->pipe = u->syncpipe;
-- urb->transfer_flags = URB_ISO_ASAP;
-- urb->number_of_packets = SYNCFRAMES;
-- urb->context = as;
-- urb->complete = usbout_sync_completed;
-- /* stride: u->syncinterval */
-- if (!usbout_sync_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_ATOMIC))
-- u->flags |= FLG_SYNC1RUNNING;
-- else
-- u->flags &= ~FLG_RUNNING;
-- }
-- }
-- spin_unlock_irqrestore(&as->lock, flags);
-- return 0;
--}
--
--/* --------------------------------------------------------------------- */
--
--static unsigned int format_goodness(struct audioformat *afp, unsigned int fmt, unsigned int srate)
--{
-- unsigned int g = 0;
--
-- if (srate < afp->sratelo)
-- g += afp->sratelo - srate;
-- if (srate > afp->sratehi)
-- g += srate - afp->sratehi;
-- if (AFMT_ISSTEREO(afp->format) && !AFMT_ISSTEREO(fmt))
-- g += 0x100000;
-- if (!AFMT_ISSTEREO(afp->format) && AFMT_ISSTEREO(fmt))
-- g += 0x400000;
-- if (AFMT_IS16BIT(afp->format) && !AFMT_IS16BIT(fmt))
-- g += 0x100000;
-- if (!AFMT_IS16BIT(afp->format) && AFMT_IS16BIT(fmt))
-- g += 0x400000;
-- return g;
--}
--
--static int find_format(struct audioformat *afp, unsigned int nr, unsigned int fmt, unsigned int srate)
--{
-- unsigned int i, g, gb = ~0;
-- int j = -1; /* default to failure */
--
-- /* find "best" format (according to format_goodness) */
-- for (i = 0; i < nr; i++) {
-- g = format_goodness(&afp[i], fmt, srate);
-- if (g >= gb)
-- continue;
-- j = i;
-- gb = g;
-- }
-- return j;
--}
--
--static int set_format_in(struct usb_audiodev *as)
--{
-- struct usb_device *dev = as->state->usbdev;
-- struct usb_host_interface *alts;
-- struct usb_interface *iface;
-- struct usbin *u = &as->usbin;
-- struct dmabuf *d = &u->dma;
-- struct audioformat *fmt;
-- unsigned int ep;
-- unsigned char data[3];
-- int fmtnr, ret;
--
-- iface = usb_ifnum_to_if(dev, u->interface);
-- if (!iface)
-- return 0;
--
-- fmtnr = find_format(as->fmtin, as->numfmtin, d->format, d->srate);
-- if (fmtnr < 0) {
-- printk(KERN_ERR "usbaudio: set_format_in(): failed to find desired format/speed combination.\n");
-- return -1;
-- }
--
-- fmt = as->fmtin + fmtnr;
-- alts = usb_altnum_to_altsetting(iface, fmt->altsetting);
-- u->format = fmt->format;
-- u->datapipe = usb_rcvisocpipe(dev, alts->endpoint[0].desc.bEndpointAddress & 0xf);
-- u->syncpipe = u->syncinterval = 0;
-- if ((alts->endpoint[0].desc.bmAttributes & 0x0c) == 0x08) {
-- if (alts->desc.bNumEndpoints < 2 ||
-- alts->endpoint[1].desc.bmAttributes != 0x01 ||
-- alts->endpoint[1].desc.bSynchAddress != 0 ||
-- alts->endpoint[1].desc.bEndpointAddress != (alts->endpoint[0].desc.bSynchAddress & 0x7f)) {
-- printk(KERN_WARNING "usbaudio: device %d interface %d altsetting %d claims adaptive in "
-- "but has invalid synch pipe; treating as asynchronous in\n",
-- dev->devnum, u->interface, fmt->altsetting);
-- } else {
-- u->syncpipe = usb_sndisocpipe(dev, alts->endpoint[1].desc.bEndpointAddress & 0xf);
-- u->syncinterval = alts->endpoint[1].desc.bRefresh;
-- }
-- }
-- if (d->srate < fmt->sratelo)
-- d->srate = fmt->sratelo;
-- if (d->srate > fmt->sratehi)
-- d->srate = fmt->sratehi;
-- dprintk((KERN_DEBUG "usbaudio: set_format_in: usb_set_interface %u %u\n",
-- u->interface, fmt->altsetting));
-- if (usb_set_interface(dev, alts->desc.bInterfaceNumber, fmt->altsetting) < 0) {
-- printk(KERN_WARNING "usbaudio: usb_set_interface failed, device %d interface %d altsetting %d\n",
-- dev->devnum, u->interface, fmt->altsetting);
-- return -1;
-- }
-- if (fmt->sratelo == fmt->sratehi)
-- return 0;
-- ep = usb_pipeendpoint(u->datapipe) | (u->datapipe & USB_DIR_IN);
-- /* if endpoint has pitch control, enable it */
-- if (fmt->attributes & 0x02) {
-- data[0] = 1;
-- if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
-- PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) {
-- printk(KERN_ERR "usbaudio: failure (error %d) to set output pitch control device %d interface %u endpoint 0x%x to %u\n",
-- ret, dev->devnum, u->interface, ep, d->srate);
-- return -1;
-- }
-- }
-- /* if endpoint has sampling rate control, set it */
-- if (fmt->attributes & 0x01) {
-- data[0] = d->srate;
-- data[1] = d->srate >> 8;
-- data[2] = d->srate >> 16;
-- if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
-- SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
-- printk(KERN_ERR "usbaudio: failure (error %d) to set input sampling frequency device %d interface %u endpoint 0x%x to %u\n",
-- ret, dev->devnum, u->interface, ep, d->srate);
-- return -1;
-- }
-- if ((ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN,
-- SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
-- printk(KERN_ERR "usbaudio: failure (error %d) to get input sampling frequency device %d interface %u endpoint 0x%x\n",
-- ret, dev->devnum, u->interface, ep);
-- return -1;
-- }
-- dprintk((KERN_DEBUG "usbaudio: set_format_in: device %d interface %d altsetting %d srate req: %u real %u\n",
-- dev->devnum, u->interface, fmt->altsetting, d->srate, data[0] | (data[1] << 8) | (data[2] << 16)));
-- d->srate = data[0] | (data[1] << 8) | (data[2] << 16);
-- }
-- dprintk((KERN_DEBUG "usbaudio: set_format_in: USB format 0x%x, DMA format 0x%x srate %u\n", u->format, d->format, d->srate));
-- return 0;
--}
--
--static int set_format_out(struct usb_audiodev *as)
--{
-- struct usb_device *dev = as->state->usbdev;
-- struct usb_host_interface *alts;
-- struct usb_interface *iface;
-- struct usbout *u = &as->usbout;
-- struct dmabuf *d = &u->dma;
-- struct audioformat *fmt;
-- unsigned int ep;
-- unsigned char data[3];
-- int fmtnr, ret;
--
-- iface = usb_ifnum_to_if(dev, u->interface);
-- if (!iface)
-- return 0;
--
-- fmtnr = find_format(as->fmtout, as->numfmtout, d->format, d->srate);
-- if (fmtnr < 0) {
-- printk(KERN_ERR "usbaudio: set_format_out(): failed to find desired format/speed combination.\n");
-- return -1;
-- }
--
-- fmt = as->fmtout + fmtnr;
-- u->format = fmt->format;
-- alts = usb_altnum_to_altsetting(iface, fmt->altsetting);
-- u->datapipe = usb_sndisocpipe(dev, alts->endpoint[0].desc.bEndpointAddress & 0xf);
-- u->syncpipe = u->syncinterval = 0;
-- if ((alts->endpoint[0].desc.bmAttributes & 0x0c) == 0x04) {
--#if 0
-- printk(KERN_DEBUG "bNumEndpoints 0x%02x endpoint[1].bmAttributes 0x%02x\n"
-- KERN_DEBUG "endpoint[1].bSynchAddress 0x%02x endpoint[1].bEndpointAddress 0x%02x\n"
-- KERN_DEBUG "endpoint[0].bSynchAddress 0x%02x\n", alts->bNumEndpoints,
-- alts->endpoint[1].bmAttributes, alts->endpoint[1].bSynchAddress,
-- alts->endpoint[1].bEndpointAddress, alts->endpoint[0].bSynchAddress);
--#endif
-- if (alts->desc.bNumEndpoints < 2 ||
-- alts->endpoint[1].desc.bmAttributes != 0x01 ||
-- alts->endpoint[1].desc.bSynchAddress != 0 ||
-- alts->endpoint[1].desc.bEndpointAddress != (alts->endpoint[0].desc.bSynchAddress | 0x80)) {
-- printk(KERN_WARNING "usbaudio: device %d interface %d altsetting %d claims asynch out "
-- "but has invalid synch pipe; treating as adaptive out\n",
-- dev->devnum, u->interface, fmt->altsetting);
-- } else {
-- u->syncpipe = usb_rcvisocpipe(dev, alts->endpoint[1].desc.bEndpointAddress & 0xf);
-- u->syncinterval = alts->endpoint[1].desc.bRefresh;
-- }
-- }
-- if (d->srate < fmt->sratelo)
-- d->srate = fmt->sratelo;
-- if (d->srate > fmt->sratehi)
-- d->srate = fmt->sratehi;
-- dprintk((KERN_DEBUG "usbaudio: set_format_out: usb_set_interface %u %u\n",
-- u->interface, fmt->altsetting));
-- if (usb_set_interface(dev, u->interface, fmt->altsetting) < 0) {
-- printk(KERN_WARNING "usbaudio: usb_set_interface failed, device %d interface %d altsetting %d\n",
-- dev->devnum, u->interface, fmt->altsetting);
-- return -1;
-- }
-- if (fmt->sratelo == fmt->sratehi)
-- return 0;
-- ep = usb_pipeendpoint(u->datapipe) | (u->datapipe & USB_DIR_IN);
-- /* if endpoint has pitch control, enable it */
-- if (fmt->attributes & 0x02) {
-- data[0] = 1;
-- if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
-- PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) {
-- printk(KERN_ERR "usbaudio: failure (error %d) to set output pitch control device %d interface %u endpoint 0x%x to %u\n",
-- ret, dev->devnum, u->interface, ep, d->srate);
-- return -1;
-- }
-- }
-- /* if endpoint has sampling rate control, set it */
-- if (fmt->attributes & 0x01) {
-- data[0] = d->srate;
-- data[1] = d->srate >> 8;
-- data[2] = d->srate >> 16;
-- if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
-- SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
-- printk(KERN_ERR "usbaudio: failure (error %d) to set output sampling frequency device %d interface %u endpoint 0x%x to %u\n",
-- ret, dev->devnum, u->interface, ep, d->srate);
-- return -1;
-- }
-- if ((ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN,
-- SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
-- printk(KERN_ERR "usbaudio: failure (error %d) to get output sampling frequency device %d interface %u endpoint 0x%x\n",
-- ret, dev->devnum, u->interface, ep);
-- return -1;
-- }
-- dprintk((KERN_DEBUG "usbaudio: set_format_out: device %d interface %d altsetting %d srate req: %u real %u\n",
-- dev->devnum, u->interface, fmt->altsetting, d->srate, data[0] | (data[1] << 8) | (data[2] << 16)));
-- d->srate = data[0] | (data[1] << 8) | (data[2] << 16);
-- }
-- dprintk((KERN_DEBUG "usbaudio: set_format_out: USB format 0x%x, DMA format 0x%x srate %u\n", u->format, d->format, d->srate));
-- return 0;
--}
--
--static int set_format(struct usb_audiodev *s, unsigned int fmode, unsigned int fmt, unsigned int srate)
--{
-- int ret1 = 0, ret2 = 0;
--
-- if (!(fmode & (FMODE_READ|FMODE_WRITE)))
-- return -EINVAL;
-- if (fmode & FMODE_READ) {
-- usbin_stop(s);
-- s->usbin.dma.ready = 0;
-- if (fmt == AFMT_QUERY)
-- fmt = s->usbin.dma.format;
-- else
-- s->usbin.dma.format = fmt;
-- if (!srate)
-- srate = s->usbin.dma.srate;
-- else
-- s->usbin.dma.srate = srate;
-- }
-- if (fmode & FMODE_WRITE) {
-- usbout_stop(s);
-- s->usbout.dma.ready = 0;
-- if (fmt == AFMT_QUERY)
-- fmt = s->usbout.dma.format;
-- else
-- s->usbout.dma.format = fmt;
-- if (!srate)
-- srate = s->usbout.dma.srate;
-- else
-- s->usbout.dma.srate = srate;
-- }
-- if (fmode & FMODE_READ)
-- ret1 = set_format_in(s);
-- if (fmode & FMODE_WRITE)
-- ret2 = set_format_out(s);
-- return ret1 ? ret1 : ret2;
--}
--
--/* --------------------------------------------------------------------- */
--
--static int wrmixer(struct usb_mixerdev *ms, unsigned mixch, unsigned value)
--{
-- struct usb_device *dev = ms->state->usbdev;
-- unsigned char data[2];
-- struct mixerchannel *ch;
-- int v1, v2, v3;
--
-- if (mixch >= ms->numch)
-- return -1;
-- ch = &ms->ch[mixch];
-- v3 = ch->maxval - ch->minval;
-- v1 = value & 0xff;
-- v2 = (value >> 8) & 0xff;
-- if (v1 > 100)
-- v1 = 100;
-- if (v2 > 100)
-- v2 = 100;
-- if (!(ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
-- v2 = v1;
-- ch->value = v1 | (v2 << 8);
-- v1 = (v1 * v3) / 100 + ch->minval;
-- v2 = (v2 * v3) / 100 + ch->minval;
-- switch (ch->selector) {
-- case 0: /* mixer unit request */
-- data[0] = v1;
-- data[1] = v1 >> 8;
-- if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-- (ch->chnum << 8) | 1, ms->iface | (ch->unitid << 8), data, 2, 1000) < 0)
-- goto err;
-- if (!(ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
-- return 0;
-- data[0] = v2;
-- data[1] = v2 >> 8;
-- if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-- ((ch->chnum + !!(ch->flags & MIXFLG_STEREOIN)) << 8) | (1 + !!(ch->flags & MIXFLG_STEREOOUT)),
-- ms->iface | (ch->unitid << 8), data, 2, 1000) < 0)
-- goto err;
-- return 0;
--
-- /* various feature unit controls */
-- case VOLUME_CONTROL:
-- data[0] = v1;
-- data[1] = v1 >> 8;
-- if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-- (ch->selector << 8) | ch->chnum, ms->iface | (ch->unitid << 8), data, 2, 1000) < 0)
-- goto err;
-- if (!(ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
-- return 0;
-- data[0] = v2;
-- data[1] = v2 >> 8;
-- if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-- (ch->selector << 8) | (ch->chnum + 1), ms->iface | (ch->unitid << 8), data, 2, 1000) < 0)
-- goto err;
-- return 0;
--
-- case BASS_CONTROL:
-- case MID_CONTROL:
-- case TREBLE_CONTROL:
-- data[0] = v1 >> 8;
-- if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-- (ch->selector << 8) | ch->chnum, ms->iface | (ch->unitid << 8), data, 1, 1000) < 0)
-- goto err;
-- if (!(ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
-- return 0;
-- data[0] = v2 >> 8;
-- if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-- (ch->selector << 8) | (ch->chnum + 1), ms->iface | (ch->unitid << 8), data, 1, 1000) < 0)
-- goto err;
-- return 0;
--
-- default:
-- return -1;
-- }
-- return 0;
--
-- err:
-- printk(KERN_ERR "usbaudio: mixer request device %u if %u unit %u ch %u selector %u failed\n",
-- dev->devnum, ms->iface, ch->unitid, ch->chnum, ch->selector);
-- return -1;
--}
--
--static int get_rec_src(struct usb_mixerdev *ms)
--{
-- struct usb_device *dev = ms->state->usbdev;
-- unsigned int mask = 0, retmask = 0;
-- unsigned int i, j;
-- unsigned char buf;
-- int err = 0;
--
-- for (i = 0; i < ms->numch; i++) {
-- if (!ms->ch[i].slctunitid || (mask & (1 << i)))
-- continue;
-- if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-- 0, ms->iface | (ms->ch[i].slctunitid << 8), &buf, 1, 1000) < 0) {
-- err = -EIO;
-- printk(KERN_ERR "usbaudio: selector read request device %u if %u unit %u failed\n",
-- dev->devnum, ms->iface, ms->ch[i].slctunitid & 0xff);
-- continue;
-- }
-- for (j = i; j < ms->numch; j++) {
-- if ((ms->ch[i].slctunitid ^ ms->ch[j].slctunitid) & 0xff)
-- continue;
-- mask |= 1 << j;
-- if (buf == (ms->ch[j].slctunitid >> 8))
-- retmask |= 1 << ms->ch[j].osschannel;
-- }
-- }
-- if (err)
-- return -EIO;
-- return retmask;
--}
--
--static int set_rec_src(struct usb_mixerdev *ms, int srcmask)
--{
-- struct usb_device *dev = ms->state->usbdev;
-- unsigned int mask = 0, smask, bmask;
-- unsigned int i, j;
-- unsigned char buf;
-- int err = 0;
--
-- for (i = 0; i < ms->numch; i++) {
-- if (!ms->ch[i].slctunitid || (mask & (1 << i)))
-- continue;
-- if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-- 0, ms->iface | (ms->ch[i].slctunitid << 8), &buf, 1, 1000) < 0) {
-- err = -EIO;
-- printk(KERN_ERR "usbaudio: selector read request device %u if %u unit %u failed\n",
-- dev->devnum, ms->iface, ms->ch[i].slctunitid & 0xff);
-- continue;
-- }
-- /* first generate smask */
-- smask = bmask = 0;
-- for (j = i; j < ms->numch; j++) {
-- if ((ms->ch[i].slctunitid ^ ms->ch[j].slctunitid) & 0xff)
-- continue;
-- smask |= 1 << ms->ch[j].osschannel;
-- if (buf == (ms->ch[j].slctunitid >> 8))
-- bmask |= 1 << ms->ch[j].osschannel;
-- mask |= 1 << j;
-- }
-- /* check for multiple set sources */
-- j = hweight32(srcmask & smask);
-- if (j == 0)
-- continue;
-- if (j > 1)
-- srcmask &= ~bmask;
-- for (j = i; j < ms->numch; j++) {
-- if ((ms->ch[i].slctunitid ^ ms->ch[j].slctunitid) & 0xff)
-- continue;
-- if (!(srcmask & (1 << ms->ch[j].osschannel)))
-- continue;
-- buf = ms->ch[j].slctunitid >> 8;
-- if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-- 0, ms->iface | (ms->ch[j].slctunitid << 8), &buf, 1, 1000) < 0) {
-- err = -EIO;
-- printk(KERN_ERR "usbaudio: selector write request device %u if %u unit %u failed\n",
-- dev->devnum, ms->iface, ms->ch[j].slctunitid & 0xff);
-- continue;
-- }
-- }
-- }
-- return err ? -EIO : 0;
--}
--
--/* --------------------------------------------------------------------- */
--
--/*
-- * should be called with open_sem hold, so that no new processes
-- * look at the audio device to be destroyed
-- */
--
--static void release(struct usb_audio_state *s)
--{
-- struct usb_audiodev *as;
-- struct usb_mixerdev *ms;
--
-- s->count--;
-- if (s->count) {
-- up(&open_sem);
-- return;
-- }
-- up(&open_sem);
-- wake_up(&open_wait);
-- while (!list_empty(&s->audiolist)) {
-- as = list_entry(s->audiolist.next, struct usb_audiodev, list);
-- list_del(&as->list);
-- usbin_release(as);
-- usbout_release(as);
-- dmabuf_release(&as->usbin.dma);
-- dmabuf_release(&as->usbout.dma);
-- usb_free_urb(as->usbin.durb[0].urb);
-- usb_free_urb(as->usbin.durb[1].urb);
-- usb_free_urb(as->usbin.surb[0].urb);
-- usb_free_urb(as->usbin.surb[1].urb);
-- usb_free_urb(as->usbout.durb[0].urb);
-- usb_free_urb(as->usbout.durb[1].urb);
-- usb_free_urb(as->usbout.surb[0].urb);
-- usb_free_urb(as->usbout.surb[1].urb);
-- kfree(as);
-- }
-- while (!list_empty(&s->mixerlist)) {
-- ms = list_entry(s->mixerlist.next, struct usb_mixerdev, list);
-- list_del(&ms->list);
-- kfree(ms);
-- }
-- kfree(s);
--}
--
--static inline int prog_dmabuf_in(struct usb_audiodev *as)
--{
-- usbin_stop(as);
-- return dmabuf_init(&as->usbin.dma);
--}
--
--static inline int prog_dmabuf_out(struct usb_audiodev *as)
--{
-- usbout_stop(as);
-- return dmabuf_init(&as->usbout.dma);
--}
--
--/* --------------------------------------------------------------------- */
--
--static int usb_audio_open_mixdev(struct inode *inode, struct file *file)
--{
-- unsigned int minor = iminor(inode);
-- struct usb_mixerdev *ms;
-- struct usb_audio_state *s;
--
-- down(&open_sem);
-- list_for_each_entry(s, &audiodevs, audiodev) {
-- list_for_each_entry(ms, &s->mixerlist, list) {
-- if (ms->dev_mixer == minor)
-- goto mixer_found;
-- }
-- }
-- up(&open_sem);
-- return -ENODEV;
--
-- mixer_found:
-- if (!s->usbdev) {
-- up(&open_sem);
-- return -EIO;
-- }
-- file->private_data = ms;
-- s->count++;
--
-- up(&open_sem);
-- return nonseekable_open(inode, file);
--}
--
--static int usb_audio_release_mixdev(struct inode *inode, struct file *file)
--{
-- struct usb_mixerdev *ms = (struct usb_mixerdev *)file->private_data;
-- struct usb_audio_state *s;
--
-- lock_kernel();
-- s = ms->state;
-- down(&open_sem);
-- release(s);
-- unlock_kernel();
-- return 0;
--}
--
--static int usb_audio_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
--{
-- struct usb_mixerdev *ms = (struct usb_mixerdev *)file->private_data;
-- int i, j, val;
-- int __user *user_arg = (int __user *)arg;
--
-- if (!ms->state->usbdev)
-- return -ENODEV;
--
-- if (cmd == SOUND_MIXER_INFO) {
-- mixer_info info;
--
-- memset(&info, 0, sizeof(info));
-- strncpy(info.id, "USB_AUDIO", sizeof(info.id));
-- strncpy(info.name, "USB Audio Class Driver", sizeof(info.name));
-- info.modify_counter = ms->modcnt;
-- if (copy_to_user((void __user *)arg, &info, sizeof(info)))
-- return -EFAULT;
-- return 0;
-- }
-- if (cmd == SOUND_OLD_MIXER_INFO) {
-- _old_mixer_info info;
--
-- memset(&info, 0, sizeof(info));
-- strncpy(info.id, "USB_AUDIO", sizeof(info.id));
-- strncpy(info.name, "USB Audio Class Driver", sizeof(info.name));
-- if (copy_to_user((void __user *)arg, &info, sizeof(info)))
-- return -EFAULT;
-- return 0;
-- }
-- if (cmd == OSS_GETVERSION)
-- return put_user(SOUND_VERSION, user_arg);
-- if (_IOC_TYPE(cmd) != 'M' || _IOC_SIZE(cmd) != sizeof(int))
-- return -EINVAL;
-- if (_IOC_DIR(cmd) == _IOC_READ) {
-- switch (_IOC_NR(cmd)) {
-- case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */
-- val = get_rec_src(ms);
-- if (val < 0)
-- return val;
-- return put_user(val, user_arg);
--
-- case SOUND_MIXER_DEVMASK: /* Arg contains a bit for each supported device */
-- for (val = i = 0; i < ms->numch; i++)
-- val |= 1 << ms->ch[i].osschannel;
-- return put_user(val, user_arg);
--
-- case SOUND_MIXER_RECMASK: /* Arg contains a bit for each supported recording source */
-- for (val = i = 0; i < ms->numch; i++)
-- if (ms->ch[i].slctunitid)
-- val |= 1 << ms->ch[i].osschannel;
-- return put_user(val, user_arg);
--
-- case SOUND_MIXER_STEREODEVS: /* Mixer channels supporting stereo */
-- for (val = i = 0; i < ms->numch; i++)
-- if (ms->ch[i].flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT))
-- val |= 1 << ms->ch[i].osschannel;
-- return put_user(val, user_arg);
--
-- case SOUND_MIXER_CAPS:
-- return put_user(SOUND_CAP_EXCL_INPUT, user_arg);
--
-- default:
-- i = _IOC_NR(cmd);
-- if (i >= SOUND_MIXER_NRDEVICES)
-- return -EINVAL;
-- for (j = 0; j < ms->numch; j++) {
-- if (ms->ch[j].osschannel == i) {
-- return put_user(ms->ch[j].value, user_arg);
-- }
-- }
-- return -EINVAL;
-- }
-- }
-- if (_IOC_DIR(cmd) != (_IOC_READ|_IOC_WRITE))
-- return -EINVAL;
-- ms->modcnt++;
-- switch (_IOC_NR(cmd)) {
-- case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */
-- if (get_user(val, user_arg))
-- return -EFAULT;
-- return set_rec_src(ms, val);
--
-- default:
-- i = _IOC_NR(cmd);
-- if (i >= SOUND_MIXER_NRDEVICES)
-- return -EINVAL;
-- for (j = 0; j < ms->numch && ms->ch[j].osschannel != i; j++);
-- if (j >= ms->numch)
-- return -EINVAL;
-- if (get_user(val, user_arg))
-- return -EFAULT;
-- if (wrmixer(ms, j, val))
-- return -EIO;
-- return put_user(ms->ch[j].value, user_arg);
-- }
--}
--
--static /*const*/ struct file_operations usb_mixer_fops = {
-- .owner = THIS_MODULE,
-- .llseek = no_llseek,
-- .ioctl = usb_audio_ioctl_mixdev,
-- .open = usb_audio_open_mixdev,
-- .release = usb_audio_release_mixdev,
--};
--
--/* --------------------------------------------------------------------- */
--
--static int drain_out(struct usb_audiodev *as, int nonblock)
--{
-- DECLARE_WAITQUEUE(wait, current);
-- unsigned long flags;
-- int count, tmo;
--
-- if (as->usbout.dma.mapped || !as->usbout.dma.ready)
-- return 0;
-- usbout_start(as);
-- add_wait_queue(&as->usbout.dma.wait, &wait);
-- for (;;) {
-- __set_current_state(TASK_INTERRUPTIBLE);
-- spin_lock_irqsave(&as->lock, flags);
-- count = as->usbout.dma.count;
-- spin_unlock_irqrestore(&as->lock, flags);
-- if (count <= 0)
-- break;
-- if (signal_pending(current))
-- break;
-- if (nonblock) {
-- remove_wait_queue(&as->usbout.dma.wait, &wait);
-- set_current_state(TASK_RUNNING);
-- return -EBUSY;
-- }
-- tmo = 3 * HZ * count / as->usbout.dma.srate;
-- tmo >>= AFMT_BYTESSHIFT(as->usbout.dma.format);
-- if (!schedule_timeout(tmo + 1)) {
-- printk(KERN_DEBUG "usbaudio: dma timed out??\n");
-- break;
-- }
-- }
-- remove_wait_queue(&as->usbout.dma.wait, &wait);
-- set_current_state(TASK_RUNNING);
-- if (signal_pending(current))
-- return -ERESTARTSYS;
-- return 0;
--}
--
--/* --------------------------------------------------------------------- */
--
--static ssize_t usb_audio_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
--{
-- struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
-- DECLARE_WAITQUEUE(wait, current);
-- ssize_t ret = 0;
-- unsigned long flags;
-- unsigned int ptr;
-- int cnt, err;
--
-- if (as->usbin.dma.mapped)
-- return -ENXIO;
-- if (!as->usbin.dma.ready && (ret = prog_dmabuf_in(as)))
-- return ret;
-- if (!access_ok(VERIFY_WRITE, buffer, count))
-- return -EFAULT;
-- add_wait_queue(&as->usbin.dma.wait, &wait);
-- while (count > 0) {
-- spin_lock_irqsave(&as->lock, flags);
-- ptr = as->usbin.dma.rdptr;
-- cnt = as->usbin.dma.count;
-- /* set task state early to avoid wakeup races */
-- if (cnt <= 0)
-- __set_current_state(TASK_INTERRUPTIBLE);
-- spin_unlock_irqrestore(&as->lock, flags);
-- if (cnt > count)
-- cnt = count;
-- if (cnt <= 0) {
-- if (usbin_start(as)) {
-- if (!ret)
-- ret = -ENODEV;
-- break;
-- }
-- if (file->f_flags & O_NONBLOCK) {
-- if (!ret)
-- ret = -EAGAIN;
-- break;
-- }
-- schedule();
-- if (signal_pending(current)) {
-- if (!ret)
-- ret = -ERESTARTSYS;
-- break;
-- }
-- continue;
-- }
-- if ((err = dmabuf_copyout_user(&as->usbin.dma, ptr, buffer, cnt))) {
-- if (!ret)
-- ret = err;
-- break;
-- }
-- ptr += cnt;
-- if (ptr >= as->usbin.dma.dmasize)
-- ptr -= as->usbin.dma.dmasize;
-- spin_lock_irqsave(&as->lock, flags);
-- as->usbin.dma.rdptr = ptr;
-- as->usbin.dma.count -= cnt;
-- spin_unlock_irqrestore(&as->lock, flags);
-- count -= cnt;
-- buffer += cnt;
-- ret += cnt;
-- }
-- __set_current_state(TASK_RUNNING);
-- remove_wait_queue(&as->usbin.dma.wait, &wait);
-- return ret;
--}
--
--static ssize_t usb_audio_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
--{
-- struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
-- DECLARE_WAITQUEUE(wait, current);
-- ssize_t ret = 0;
-- unsigned long flags;
-- unsigned int ptr;
-- unsigned int start_thr;
-- int cnt, err;
--
-- if (as->usbout.dma.mapped)
-- return -ENXIO;
-- if (!as->usbout.dma.ready && (ret = prog_dmabuf_out(as)))
-- return ret;
-- if (!access_ok(VERIFY_READ, buffer, count))
-- return -EFAULT;
-- start_thr = (as->usbout.dma.srate << AFMT_BYTESSHIFT(as->usbout.dma.format)) / (1000 / (3 * DESCFRAMES));
-- add_wait_queue(&as->usbout.dma.wait, &wait);
-- while (count > 0) {
--#if 0
-- printk(KERN_DEBUG "usb_audio_write: count %u dma: count %u rdptr %u wrptr %u dmasize %u fragsize %u flags 0x%02x taskst 0x%lx\n",
-- count, as->usbout.dma.count, as->usbout.dma.rdptr, as->usbout.dma.wrptr, as->usbout.dma.dmasize, as->usbout.dma.fragsize,
-- as->usbout.flags, current->state);
--#endif
-- spin_lock_irqsave(&as->lock, flags);
-- if (as->usbout.dma.count < 0) {
-- as->usbout.dma.count = 0;
-- as->usbout.dma.rdptr = as->usbout.dma.wrptr;
-- }
-- ptr = as->usbout.dma.wrptr;
-- cnt = as->usbout.dma.dmasize - as->usbout.dma.count;
-- /* set task state early to avoid wakeup races */
-- if (cnt <= 0)
-- __set_current_state(TASK_INTERRUPTIBLE);
-- spin_unlock_irqrestore(&as->lock, flags);
-- if (cnt > count)
-- cnt = count;
-- if (cnt <= 0) {
-- if (usbout_start(as)) {
-- if (!ret)
-- ret = -ENODEV;
-- break;
-- }
-- if (file->f_flags & O_NONBLOCK) {
-- if (!ret)
-- ret = -EAGAIN;
-- break;
-- }
-- schedule();
-- if (signal_pending(current)) {
-- if (!ret)
-- ret = -ERESTARTSYS;
-- break;
-- }
-- continue;
-- }
-- if ((err = dmabuf_copyin_user(&as->usbout.dma, ptr, buffer, cnt))) {
-- if (!ret)
-- ret = err;
-- break;
-- }
-- ptr += cnt;
-- if (ptr >= as->usbout.dma.dmasize)
-- ptr -= as->usbout.dma.dmasize;
-- spin_lock_irqsave(&as->lock, flags);
-- as->usbout.dma.wrptr = ptr;
-- as->usbout.dma.count += cnt;
-- spin_unlock_irqrestore(&as->lock, flags);
-- count -= cnt;
-- buffer += cnt;
-- ret += cnt;
-- if (as->usbout.dma.count >= start_thr && usbout_start(as)) {
-- if (!ret)
-- ret = -ENODEV;
-- break;
-- }
-- }
-- __set_current_state(TASK_RUNNING);
-- remove_wait_queue(&as->usbout.dma.wait, &wait);
-- return ret;
--}
--
--/* Called without the kernel lock - fine */
--static unsigned int usb_audio_poll(struct file *file, struct poll_table_struct *wait)
--{
-- struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
-- unsigned long flags;
-- unsigned int mask = 0;
--
-- if (file->f_mode & FMODE_WRITE) {
-- if (!as->usbout.dma.ready)
-- prog_dmabuf_out(as);
-- poll_wait(file, &as->usbout.dma.wait, wait);
-- }
-- if (file->f_mode & FMODE_READ) {
-- if (!as->usbin.dma.ready)
-- prog_dmabuf_in(as);
-- poll_wait(file, &as->usbin.dma.wait, wait);
-- }
-- spin_lock_irqsave(&as->lock, flags);
-- if (file->f_mode & FMODE_READ) {
-- if (as->usbin.dma.count >= (signed)as->usbin.dma.fragsize)
-- mask |= POLLIN | POLLRDNORM;
-- }
-- if (file->f_mode & FMODE_WRITE) {
-- if (as->usbout.dma.mapped) {
-- if (as->usbout.dma.count >= (signed)as->usbout.dma.fragsize)
-- mask |= POLLOUT | POLLWRNORM;
-- } else {
-- if ((signed)as->usbout.dma.dmasize >= as->usbout.dma.count + (signed)as->usbout.dma.fragsize)
-- mask |= POLLOUT | POLLWRNORM;
-- }
-- }
-- spin_unlock_irqrestore(&as->lock, flags);
-- return mask;
--}
--
--static int usb_audio_mmap(struct file *file, struct vm_area_struct *vma)
--{
-- struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
-- struct dmabuf *db;
-- int ret = -EINVAL;
--
-- lock_kernel();
-- if (vma->vm_flags & VM_WRITE) {
-- if ((ret = prog_dmabuf_out(as)) != 0)
-- goto out;
-- db = &as->usbout.dma;
-- } else if (vma->vm_flags & VM_READ) {
-- if ((ret = prog_dmabuf_in(as)) != 0)
-- goto out;
-- db = &as->usbin.dma;
-- } else
-- goto out;
--
-- ret = -EINVAL;
-- if (vma->vm_pgoff != 0)
-- goto out;
--
-- ret = dmabuf_mmap(vma, db, vma->vm_start, vma->vm_end - vma->vm_start, vma->vm_page_prot);
--out:
-- unlock_kernel();
-- return ret;
--}
--
--static int usb_audio_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
--{
-- struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
-- struct usb_audio_state *s = as->state;
-- int __user *user_arg = (int __user *)arg;
-- unsigned long flags;
-- audio_buf_info abinfo;
-- count_info cinfo;
-- int val = 0;
-- int val2, mapped, ret;
--
-- if (!s->usbdev)
-- return -EIO;
-- mapped = ((file->f_mode & FMODE_WRITE) && as->usbout.dma.mapped) ||
-- ((file->f_mode & FMODE_READ) && as->usbin.dma.mapped);
--#if 0
-- if (arg)
-- get_user(val, (int *)arg);
-- printk(KERN_DEBUG "usbaudio: usb_audio_ioctl cmd=%x arg=%lx *arg=%d\n", cmd, arg, val)
--#endif
-- switch (cmd) {
-- case OSS_GETVERSION:
-- return put_user(SOUND_VERSION, user_arg);
--
-- case SNDCTL_DSP_SYNC:
-- if (file->f_mode & FMODE_WRITE)
-- return drain_out(as, 0/*file->f_flags & O_NONBLOCK*/);
-- return 0;
--
-- case SNDCTL_DSP_SETDUPLEX:
-- return 0;
--
-- case SNDCTL_DSP_GETCAPS:
-- return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME | DSP_CAP_TRIGGER |
-- DSP_CAP_MMAP | DSP_CAP_BATCH, user_arg);
--
-- case SNDCTL_DSP_RESET:
-- if (file->f_mode & FMODE_WRITE) {
-- usbout_stop(as);
-- as->usbout.dma.rdptr = as->usbout.dma.wrptr = as->usbout.dma.count = as->usbout.dma.total_bytes = 0;
-- }
-- if (file->f_mode & FMODE_READ) {
-- usbin_stop(as);
-- as->usbin.dma.rdptr = as->usbin.dma.wrptr = as->usbin.dma.count = as->usbin.dma.total_bytes = 0;
-- }
-- return 0;
--
-- case SNDCTL_DSP_SPEED:
-- if (get_user(val, user_arg))
-- return -EFAULT;
-- if (val >= 0) {
-- if (val < 4000)
-- val = 4000;
-- if (val > 100000)
-- val = 100000;
-- if (set_format(as, file->f_mode, AFMT_QUERY, val))
-- return -EIO;
-- }
-- return put_user((file->f_mode & FMODE_READ) ?
-- as->usbin.dma.srate : as->usbout.dma.srate,
-- user_arg);
--
-- case SNDCTL_DSP_STEREO:
-- if (get_user(val, user_arg))
-- return -EFAULT;
-- val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
-- if (val)
-- val2 |= AFMT_STEREO;
-- else
-- val2 &= ~AFMT_STEREO;
-- if (set_format(as, file->f_mode, val2, 0))
-- return -EIO;
-- return 0;
--
-- case SNDCTL_DSP_CHANNELS:
-- if (get_user(val, user_arg))
-- return -EFAULT;
-- if (val != 0) {
-- val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
-- if (val == 1)
-- val2 &= ~AFMT_STEREO;
-- else
-- val2 |= AFMT_STEREO;
-- if (set_format(as, file->f_mode, val2, 0))
-- return -EIO;
-- }
-- val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
-- return put_user(AFMT_ISSTEREO(val2) ? 2 : 1, user_arg);
--
-- case SNDCTL_DSP_GETFMTS: /* Returns a mask */
-- return put_user(AFMT_U8 | AFMT_U16_LE | AFMT_U16_BE |
-- AFMT_S8 | AFMT_S16_LE | AFMT_S16_BE, user_arg);
--
-- case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/
-- if (get_user(val, user_arg))
-- return -EFAULT;
-- if (val != AFMT_QUERY) {
-- if (hweight32(val) != 1)
-- return -EINVAL;
-- if (!(val & (AFMT_U8 | AFMT_U16_LE | AFMT_U16_BE |
-- AFMT_S8 | AFMT_S16_LE | AFMT_S16_BE)))
-- return -EINVAL;
-- val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
-- val |= val2 & AFMT_STEREO;
-- if (set_format(as, file->f_mode, val, 0))
-- return -EIO;
-- }
-- val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
-- return put_user(val2 & ~AFMT_STEREO, user_arg);
--
-- case SNDCTL_DSP_POST:
-- return 0;
--
-- case SNDCTL_DSP_GETTRIGGER:
-- val = 0;
-- if (file->f_mode & FMODE_READ && as->usbin.flags & FLG_RUNNING)
-- val |= PCM_ENABLE_INPUT;
-- if (file->f_mode & FMODE_WRITE && as->usbout.flags & FLG_RUNNING)
-- val |= PCM_ENABLE_OUTPUT;
-- return put_user(val, user_arg);
--
-- case SNDCTL_DSP_SETTRIGGER:
-- if (get_user(val, user_arg))
-- return -EFAULT;
-- if (file->f_mode & FMODE_READ) {
-- if (val & PCM_ENABLE_INPUT) {
-- if (!as->usbin.dma.ready && (ret = prog_dmabuf_in(as)))
-- return ret;
-- if (usbin_start(as))
-- return -ENODEV;
-- } else
-- usbin_stop(as);
-- }
-- if (file->f_mode & FMODE_WRITE) {
-- if (val & PCM_ENABLE_OUTPUT) {
-- if (!as->usbout.dma.ready && (ret = prog_dmabuf_out(as)))
-- return ret;
-- if (usbout_start(as))
-- return -ENODEV;
-- } else
-- usbout_stop(as);
-- }
-- return 0;
--
-- case SNDCTL_DSP_GETOSPACE:
-- if (!(file->f_mode & FMODE_WRITE))
-- return -EINVAL;
-- if (!(as->usbout.flags & FLG_RUNNING) && (val = prog_dmabuf_out(as)) != 0)
-- return val;
-- spin_lock_irqsave(&as->lock, flags);
-- abinfo.fragsize = as->usbout.dma.fragsize;
-- abinfo.bytes = as->usbout.dma.dmasize - as->usbout.dma.count;
-- abinfo.fragstotal = as->usbout.dma.numfrag;
-- abinfo.fragments = abinfo.bytes >> as->usbout.dma.fragshift;
-- spin_unlock_irqrestore(&as->lock, flags);
-- return copy_to_user((void __user *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
--
-- case SNDCTL_DSP_GETISPACE:
-- if (!(file->f_mode & FMODE_READ))
-- return -EINVAL;
-- if (!(as->usbin.flags & FLG_RUNNING) && (val = prog_dmabuf_in(as)) != 0)
-- return val;
-- spin_lock_irqsave(&as->lock, flags);
-- abinfo.fragsize = as->usbin.dma.fragsize;
-- abinfo.bytes = as->usbin.dma.count;
-- abinfo.fragstotal = as->usbin.dma.numfrag;
-- abinfo.fragments = abinfo.bytes >> as->usbin.dma.fragshift;
-- spin_unlock_irqrestore(&as->lock, flags);
-- return copy_to_user((void __user *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
--
-- case SNDCTL_DSP_NONBLOCK:
-- file->f_flags |= O_NONBLOCK;
-- return 0;
--
-- case SNDCTL_DSP_GETODELAY:
-- if (!(file->f_mode & FMODE_WRITE))
-- return -EINVAL;
-- spin_lock_irqsave(&as->lock, flags);
-- val = as->usbout.dma.count;
-- spin_unlock_irqrestore(&as->lock, flags);
-- return put_user(val, user_arg);
--
-- case SNDCTL_DSP_GETIPTR:
-- if (!(file->f_mode & FMODE_READ))
-- return -EINVAL;
-- spin_lock_irqsave(&as->lock, flags);
-- cinfo.bytes = as->usbin.dma.total_bytes;
-- cinfo.blocks = as->usbin.dma.count >> as->usbin.dma.fragshift;
-- cinfo.ptr = as->usbin.dma.wrptr;
-- if (as->usbin.dma.mapped)
-- as->usbin.dma.count &= as->usbin.dma.fragsize-1;
-- spin_unlock_irqrestore(&as->lock, flags);
-- if (copy_to_user((void __user *)arg, &cinfo, sizeof(cinfo)))
-- return -EFAULT;
-- return 0;
--
-- case SNDCTL_DSP_GETOPTR:
-- if (!(file->f_mode & FMODE_WRITE))
-- return -EINVAL;
-- spin_lock_irqsave(&as->lock, flags);
-- cinfo.bytes = as->usbout.dma.total_bytes;
-- cinfo.blocks = as->usbout.dma.count >> as->usbout.dma.fragshift;
-- cinfo.ptr = as->usbout.dma.rdptr;
-- if (as->usbout.dma.mapped)
-- as->usbout.dma.count &= as->usbout.dma.fragsize-1;
-- spin_unlock_irqrestore(&as->lock, flags);
-- if (copy_to_user((void __user *)arg, &cinfo, sizeof(cinfo)))
-- return -EFAULT;
-- return 0;
--
-- case SNDCTL_DSP_GETBLKSIZE:
-- if (file->f_mode & FMODE_WRITE) {
-- if ((val = prog_dmabuf_out(as)))
-- return val;
-- return put_user(as->usbout.dma.fragsize, user_arg);
-- }
-- if ((val = prog_dmabuf_in(as)))
-- return val;
-- return put_user(as->usbin.dma.fragsize, user_arg);
--
-- case SNDCTL_DSP_SETFRAGMENT:
-- if (get_user(val, user_arg))
-- return -EFAULT;
-- if (file->f_mode & FMODE_READ) {
-- as->usbin.dma.ossfragshift = val & 0xffff;
-- as->usbin.dma.ossmaxfrags = (val >> 16) & 0xffff;
-- if (as->usbin.dma.ossfragshift < 4)
-- as->usbin.dma.ossfragshift = 4;
-- if (as->usbin.dma.ossfragshift > 15)
-- as->usbin.dma.ossfragshift = 15;
-- if (as->usbin.dma.ossmaxfrags < 4)
-- as->usbin.dma.ossmaxfrags = 4;
-- }
-- if (file->f_mode & FMODE_WRITE) {
-- as->usbout.dma.ossfragshift = val & 0xffff;
-- as->usbout.dma.ossmaxfrags = (val >> 16) & 0xffff;
-- if (as->usbout.dma.ossfragshift < 4)
-- as->usbout.dma.ossfragshift = 4;
-- if (as->usbout.dma.ossfragshift > 15)
-- as->usbout.dma.ossfragshift = 15;
-- if (as->usbout.dma.ossmaxfrags < 4)
-- as->usbout.dma.ossmaxfrags = 4;
-- }
-- return 0;
--
-- case SNDCTL_DSP_SUBDIVIDE:
-- if ((file->f_mode & FMODE_READ && as->usbin.dma.subdivision) ||
-- (file->f_mode & FMODE_WRITE && as->usbout.dma.subdivision))
-- return -EINVAL;
-- if (get_user(val, user_arg))
-- return -EFAULT;
-- if (val != 1 && val != 2 && val != 4)
-- return -EINVAL;
-- if (file->f_mode & FMODE_READ)
-- as->usbin.dma.subdivision = val;
-- if (file->f_mode & FMODE_WRITE)
-- as->usbout.dma.subdivision = val;
-- return 0;
--
-- case SOUND_PCM_READ_RATE:
-- return put_user((file->f_mode & FMODE_READ) ?
-- as->usbin.dma.srate : as->usbout.dma.srate,
-- user_arg);
--
-- case SOUND_PCM_READ_CHANNELS:
-- val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
-- return put_user(AFMT_ISSTEREO(val2) ? 2 : 1, user_arg);
--
-- case SOUND_PCM_READ_BITS:
-- val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
-- return put_user(AFMT_IS16BIT(val2) ? 16 : 8, user_arg);
--
-- case SOUND_PCM_WRITE_FILTER:
-- case SNDCTL_DSP_SETSYNCRO:
-- case SOUND_PCM_READ_FILTER:
-- return -EINVAL;
-- }
-- dprintk((KERN_DEBUG "usbaudio: usb_audio_ioctl - no command found\n"));
-- return -ENOIOCTLCMD;
--}
--
--static int usb_audio_open(struct inode *inode, struct file *file)
--{
-- unsigned int minor = iminor(inode);
-- DECLARE_WAITQUEUE(wait, current);
-- struct usb_audiodev *as;
-- struct usb_audio_state *s;
--
-- for (;;) {
-- down(&open_sem);
-- list_for_each_entry(s, &audiodevs, audiodev) {
-- list_for_each_entry(as, &s->audiolist, list) {
-- if (!((as->dev_audio ^ minor) & ~0xf))
-- goto device_found;
-- }
-- }
-- up(&open_sem);
-- return -ENODEV;
--
-- device_found:
-- if (!s->usbdev) {
-- up(&open_sem);
-- return -EIO;
-- }
-- /* wait for device to become free */
-- if (!(as->open_mode & file->f_mode))
-- break;
-- if (file->f_flags & O_NONBLOCK) {
-- up(&open_sem);
-- return -EBUSY;
-- }
-- __set_current_state(TASK_INTERRUPTIBLE);
-- add_wait_queue(&open_wait, &wait);
-- up(&open_sem);
-- schedule();
-- __set_current_state(TASK_RUNNING);
-- remove_wait_queue(&open_wait, &wait);
-- if (signal_pending(current))
-- return -ERESTARTSYS;
-- }
-- if (file->f_mode & FMODE_READ)
-- as->usbin.dma.ossfragshift = as->usbin.dma.ossmaxfrags = as->usbin.dma.subdivision = 0;
-- if (file->f_mode & FMODE_WRITE)
-- as->usbout.dma.ossfragshift = as->usbout.dma.ossmaxfrags = as->usbout.dma.subdivision = 0;
-- if (set_format(as, file->f_mode, ((minor & 0xf) == SND_DEV_DSP16) ? AFMT_S16_LE : AFMT_U8 /* AFMT_ULAW */, 8000)) {
-- up(&open_sem);
-- return -EIO;
-- }
-- file->private_data = as;
-- as->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
-- s->count++;
-- up(&open_sem);
-- return nonseekable_open(inode, file);
--}
--
--static int usb_audio_release(struct inode *inode, struct file *file)
--{
-- struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
-- struct usb_audio_state *s;
-- struct usb_device *dev;
--
-- lock_kernel();
-- s = as->state;
-- dev = s->usbdev;
-- if (file->f_mode & FMODE_WRITE)
-- drain_out(as, file->f_flags & O_NONBLOCK);
-- down(&open_sem);
-- if (file->f_mode & FMODE_WRITE) {
-- usbout_stop(as);
-- if (dev && as->usbout.interface >= 0)
-- usb_set_interface(dev, as->usbout.interface, 0);
-- dmabuf_release(&as->usbout.dma);
-- usbout_release(as);
-- }
-- if (file->f_mode & FMODE_READ) {
-- usbin_stop(as);
-- if (dev && as->usbin.interface >= 0)
-- usb_set_interface(dev, as->usbin.interface, 0);
-- dmabuf_release(&as->usbin.dma);
-- usbin_release(as);
-- }
-- as->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE);
-- release(s);
-- wake_up(&open_wait);
-- unlock_kernel();
-- return 0;
--}
--
--static /*const*/ struct file_operations usb_audio_fops = {
-- .owner = THIS_MODULE,
-- .llseek = no_llseek,
-- .read = usb_audio_read,
-- .write = usb_audio_write,
-- .poll = usb_audio_poll,
-- .ioctl = usb_audio_ioctl,
-- .mmap = usb_audio_mmap,
-- .open = usb_audio_open,
-- .release = usb_audio_release,
--};
--
--/* --------------------------------------------------------------------- */
--
--static int usb_audio_probe(struct usb_interface *iface,
-- const struct usb_device_id *id);
--static void usb_audio_disconnect(struct usb_interface *iface);
--
--static struct usb_device_id usb_audio_ids [] = {
-- { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS),
-- .bInterfaceClass = USB_CLASS_AUDIO, .bInterfaceSubClass = 1},
-- { } /* Terminating entry */
--};
--
--MODULE_DEVICE_TABLE (usb, usb_audio_ids);
--
--static struct usb_driver usb_audio_driver = {
-- .name = "audio",
-- .probe = usb_audio_probe,
-- .disconnect = usb_audio_disconnect,
-- .id_table = usb_audio_ids,
--};
--
--static void *find_descriptor(void *descstart, unsigned int desclen, void *after,
-- u8 dtype, int iface, int altsetting)
--{
-- u8 *p, *end, *next;
-- int ifc = -1, as = -1;
--
-- p = descstart;
-- end = p + desclen;
-- for (; p < end;) {
-- if (p[0] < 2)
-- return NULL;
-- next = p + p[0];
-- if (next > end)
-- return NULL;
-- if (p[1] == USB_DT_INTERFACE) {
-- /* minimum length of interface descriptor */
-- if (p[0] < 9)
-- return NULL;
-- ifc = p[2];
-- as = p[3];
-- }
-- if (p[1] == dtype && (!after || (void *)p > after) &&
-- (iface == -1 || iface == ifc) && (altsetting == -1 || altsetting == as)) {
-- return p;
-- }
-- p = next;
-- }
-- return NULL;
--}
--
--static void *find_csinterface_descriptor(void *descstart, unsigned int desclen, void *after, u8 dsubtype, int iface, int altsetting)
--{
-- unsigned char *p;
--
-- p = find_descriptor(descstart, desclen, after, USB_DT_CS_INTERFACE, iface, altsetting);
-- while (p) {
-- if (p[0] >= 3 && p[2] == dsubtype)
-- return p;
-- p = find_descriptor(descstart, desclen, p, USB_DT_CS_INTERFACE, iface, altsetting);
-- }
-- return NULL;
--}
--
--static void *find_audiocontrol_unit(void *descstart, unsigned int desclen, void *after, u8 unit, int iface)
--{
-- unsigned char *p;
--
-- p = find_descriptor(descstart, desclen, after, USB_DT_CS_INTERFACE, iface, -1);
-- while (p) {
-- if (p[0] >= 4 && p[2] >= INPUT_TERMINAL && p[2] <= EXTENSION_UNIT && p[3] == unit)
-- return p;
-- p = find_descriptor(descstart, desclen, p, USB_DT_CS_INTERFACE, iface, -1);
-- }
-- return NULL;
--}
--
--static void usb_audio_parsestreaming(struct usb_audio_state *s, unsigned char *buffer, unsigned int buflen, int asifin, int asifout)
--{
-- struct usb_device *dev = s->usbdev;
-- struct usb_audiodev *as;
-- struct usb_host_interface *alts;
-- struct usb_interface *iface;
-- struct audioformat *fp;
-- unsigned char *fmt, *csep;
-- unsigned int i, j, k, format, idx;
--
-- if (!(as = kmalloc(sizeof(struct usb_audiodev), GFP_KERNEL)))
-- return;
-- memset(as, 0, sizeof(struct usb_audiodev));
-- init_waitqueue_head(&as->usbin.dma.wait);
-- init_waitqueue_head(&as->usbout.dma.wait);
-- spin_lock_init(&as->lock);
-- as->usbin.durb[0].urb = usb_alloc_urb (DESCFRAMES, GFP_KERNEL);
-- as->usbin.durb[1].urb = usb_alloc_urb (DESCFRAMES, GFP_KERNEL);
-- as->usbin.surb[0].urb = usb_alloc_urb (SYNCFRAMES, GFP_KERNEL);
-- as->usbin.surb[1].urb = usb_alloc_urb (SYNCFRAMES, GFP_KERNEL);
-- as->usbout.durb[0].urb = usb_alloc_urb (DESCFRAMES, GFP_KERNEL);
-- as->usbout.durb[1].urb = usb_alloc_urb (DESCFRAMES, GFP_KERNEL);
-- as->usbout.surb[0].urb = usb_alloc_urb (SYNCFRAMES, GFP_KERNEL);
-- as->usbout.surb[1].urb = usb_alloc_urb (SYNCFRAMES, GFP_KERNEL);
-- if ((!as->usbin.durb[0].urb) ||
-- (!as->usbin.durb[1].urb) ||
-- (!as->usbin.surb[0].urb) ||
-- (!as->usbin.surb[1].urb) ||
-- (!as->usbout.durb[0].urb) ||
-- (!as->usbout.durb[1].urb) ||
-- (!as->usbout.surb[0].urb) ||
-- (!as->usbout.surb[1].urb)) {
-- usb_free_urb(as->usbin.durb[0].urb);
-- usb_free_urb(as->usbin.durb[1].urb);
-- usb_free_urb(as->usbin.surb[0].urb);
-- usb_free_urb(as->usbin.surb[1].urb);
-- usb_free_urb(as->usbout.durb[0].urb);
-- usb_free_urb(as->usbout.durb[1].urb);
-- usb_free_urb(as->usbout.surb[0].urb);
-- usb_free_urb(as->usbout.surb[1].urb);
-- kfree(as);
-- return;
-- }
-- as->state = s;
-- as->usbin.interface = asifin;
-- as->usbout.interface = asifout;
-- /* search for input formats */
-- if (asifin >= 0) {
-- as->usbin.flags = FLG_CONNECTED;
-- iface = usb_ifnum_to_if(dev, asifin);
-- for (idx = 0; idx < iface->num_altsetting; idx++) {
-- alts = &iface->altsetting[idx];
-- i = alts->desc.bAlternateSetting;
-- if (alts->desc.bInterfaceClass != USB_CLASS_AUDIO || alts->desc.bInterfaceSubClass != 2)
-- continue;
-- if (alts->desc.bNumEndpoints < 1) {
-- if (i != 0) { /* altsetting 0 has no endpoints (Section B.3.4.1) */
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u does not have an endpoint\n",
-- dev->devnum, asifin, i);
-- }
-- continue;
-- }
-- if ((alts->endpoint[0].desc.bmAttributes & 0x03) != 0x01 ||
-- !(alts->endpoint[0].desc.bEndpointAddress & 0x80)) {
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u first endpoint not isochronous in\n",
-- dev->devnum, asifin, i);
-- continue;
-- }
-- fmt = find_csinterface_descriptor(buffer, buflen, NULL, AS_GENERAL, asifin, i);
-- if (!fmt) {
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not found\n",
-- dev->devnum, asifin, i);
-- continue;
-- }
-- if (fmt[0] < 7 || fmt[6] != 0 || (fmt[5] != 1 && fmt[5] != 2)) {
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u format not supported\n",
-- dev->devnum, asifin, i);
-- continue;
-- }
-- format = (fmt[5] == 2) ? (AFMT_U16_LE | AFMT_U8) : (AFMT_S16_LE | AFMT_S8);
-- fmt = find_csinterface_descriptor(buffer, buflen, NULL, FORMAT_TYPE, asifin, i);
-- if (!fmt) {
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not found\n",
-- dev->devnum, asifin, i);
-- continue;
-- }
-- if (fmt[0] < 8+3*(fmt[7] ? fmt[7] : 2) || fmt[3] != 1) {
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not supported\n",
-- dev->devnum, asifin, i);
-- continue;
-- }
-- if (fmt[4] < 1 || fmt[4] > 2 || fmt[5] < 1 || fmt[5] > 2) {
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u unsupported channels %u framesize %u\n",
-- dev->devnum, asifin, i, fmt[4], fmt[5]);
-- continue;
-- }
-- csep = find_descriptor(buffer, buflen, NULL, USB_DT_CS_ENDPOINT, asifin, i);
-- if (!csep || csep[0] < 7 || csep[2] != EP_GENERAL) {
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u no or invalid class specific endpoint descriptor\n",
-- dev->devnum, asifin, i);
-- continue;
-- }
-- if (as->numfmtin >= MAXFORMATS)
-- continue;
-- fp = &as->fmtin[as->numfmtin++];
-- if (fmt[5] == 2)
-- format &= (AFMT_U16_LE | AFMT_S16_LE);
-- else
-- format &= (AFMT_U8 | AFMT_S8);
-- if (fmt[4] == 2)
-- format |= AFMT_STEREO;
-- fp->format = format;
-- fp->altsetting = i;
-- fp->sratelo = fp->sratehi = fmt[8] | (fmt[9] << 8) | (fmt[10] << 16);
-- printk(KERN_INFO "usbaudio: valid input sample rate %u\n", fp->sratelo);
-- for (j = fmt[7] ? (fmt[7]-1) : 1; j > 0; j--) {
-- k = fmt[8+3*j] | (fmt[9+3*j] << 8) | (fmt[10+3*j] << 16);
-- printk(KERN_INFO "usbaudio: valid input sample rate %u\n", k);
-- if (k > fp->sratehi)
-- fp->sratehi = k;
-- if (k < fp->sratelo)
-- fp->sratelo = k;
-- }
-- fp->attributes = csep[3];
-- printk(KERN_INFO "usbaudio: device %u interface %u altsetting %u: format 0x%08x sratelo %u sratehi %u attributes 0x%02x\n",
-- dev->devnum, asifin, i, fp->format, fp->sratelo, fp->sratehi, fp->attributes);
-- }
-- }
-- /* search for output formats */
-- if (asifout >= 0) {
-- as->usbout.flags = FLG_CONNECTED;
-- iface = usb_ifnum_to_if(dev, asifout);
-- for (idx = 0; idx < iface->num_altsetting; idx++) {
-- alts = &iface->altsetting[idx];
-- i = alts->desc.bAlternateSetting;
-- if (alts->desc.bInterfaceClass != USB_CLASS_AUDIO || alts->desc.bInterfaceSubClass != 2)
-- continue;
-- if (alts->desc.bNumEndpoints < 1) {
-- /* altsetting 0 should never have iso EPs */
-- if (i != 0)
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u does not have an endpoint\n",
-- dev->devnum, asifout, i);
-- continue;
-- }
-- if ((alts->endpoint[0].desc.bmAttributes & 0x03) != 0x01 ||
-- (alts->endpoint[0].desc.bEndpointAddress & 0x80)) {
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u first endpoint not isochronous out\n",
-- dev->devnum, asifout, i);
-- continue;
-- }
-- /* See USB audio formats manual, section 2 */
-- fmt = find_csinterface_descriptor(buffer, buflen, NULL, AS_GENERAL, asifout, i);
-- if (!fmt) {
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not found\n",
-- dev->devnum, asifout, i);
-- continue;
-- }
-- if (fmt[0] < 7 || fmt[6] != 0 || (fmt[5] != 1 && fmt[5] != 2)) {
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u format not supported\n",
-- dev->devnum, asifout, i);
-- continue;
-- }
-- format = (fmt[5] == 2) ? (AFMT_U16_LE | AFMT_U8) : (AFMT_S16_LE | AFMT_S8);
-- /* Dallas DS4201 workaround */
-- if (le16_to_cpu(dev->descriptor.idVendor) == 0x04fa &&
-- le16_to_cpu(dev->descriptor.idProduct) == 0x4201)
-- format = (AFMT_S16_LE | AFMT_S8);
-- fmt = find_csinterface_descriptor(buffer, buflen, NULL, FORMAT_TYPE, asifout, i);
-- if (!fmt) {
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not found\n",
-- dev->devnum, asifout, i);
-- continue;
-- }
-- if (fmt[0] < 8+3*(fmt[7] ? fmt[7] : 2) || fmt[3] != 1) {
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not supported\n",
-- dev->devnum, asifout, i);
-- continue;
-- }
-- if (fmt[4] < 1 || fmt[4] > 2 || fmt[5] < 1 || fmt[5] > 2) {
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u unsupported channels %u framesize %u\n",
-- dev->devnum, asifout, i, fmt[4], fmt[5]);
-- continue;
-- }
-- csep = find_descriptor(buffer, buflen, NULL, USB_DT_CS_ENDPOINT, asifout, i);
-- if (!csep || csep[0] < 7 || csep[2] != EP_GENERAL) {
-- printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u no or invalid class specific endpoint descriptor\n",
-- dev->devnum, asifout, i);
-- continue;
-- }
-- if (as->numfmtout >= MAXFORMATS)
-- continue;
-- fp = &as->fmtout[as->numfmtout++];
-- if (fmt[5] == 2)
-- format &= (AFMT_U16_LE | AFMT_S16_LE);
-- else
-- format &= (AFMT_U8 | AFMT_S8);
-- if (fmt[4] == 2)
-- format |= AFMT_STEREO;
-- fp->format = format;
-- fp->altsetting = i;
-- fp->sratelo = fp->sratehi = fmt[8] | (fmt[9] << 8) | (fmt[10] << 16);
-- printk(KERN_INFO "usbaudio: valid output sample rate %u\n", fp->sratelo);
-- for (j = fmt[7] ? (fmt[7]-1) : 1; j > 0; j--) {
-- k = fmt[8+3*j] | (fmt[9+3*j] << 8) | (fmt[10+3*j] << 16);
-- printk(KERN_INFO "usbaudio: valid output sample rate %u\n", k);
-- if (k > fp->sratehi)
-- fp->sratehi = k;
-- if (k < fp->sratelo)
-- fp->sratelo = k;
-- }
-- fp->attributes = csep[3];
-- printk(KERN_INFO "usbaudio: device %u interface %u altsetting %u: format 0x%08x sratelo %u sratehi %u attributes 0x%02x\n",
-- dev->devnum, asifout, i, fp->format, fp->sratelo, fp->sratehi, fp->attributes);
-- }
-- }
-- if (as->numfmtin == 0 && as->numfmtout == 0) {
-- usb_free_urb(as->usbin.durb[0].urb);
-- usb_free_urb(as->usbin.durb[1].urb);
-- usb_free_urb(as->usbin.surb[0].urb);
-- usb_free_urb(as->usbin.surb[1].urb);
-- usb_free_urb(as->usbout.durb[0].urb);
-- usb_free_urb(as->usbout.durb[1].urb);
-- usb_free_urb(as->usbout.surb[0].urb);
-- usb_free_urb(as->usbout.surb[1].urb);
-- kfree(as);
-- return;
-- }
-- if ((as->dev_audio = register_sound_dsp(&usb_audio_fops, -1)) < 0) {
-- printk(KERN_ERR "usbaudio: cannot register dsp\n");
-- usb_free_urb(as->usbin.durb[0].urb);
-- usb_free_urb(as->usbin.durb[1].urb);
-- usb_free_urb(as->usbin.surb[0].urb);
-- usb_free_urb(as->usbin.surb[1].urb);
-- usb_free_urb(as->usbout.durb[0].urb);
-- usb_free_urb(as->usbout.durb[1].urb);
-- usb_free_urb(as->usbout.surb[0].urb);
-- usb_free_urb(as->usbout.surb[1].urb);
-- kfree(as);
-- return;
-- }
-- printk(KERN_INFO "usbaudio: registered dsp 14,%d\n", as->dev_audio);
-- /* everything successful */
-- list_add_tail(&as->list, &s->audiolist);
--}
--
--struct consmixstate {
-- struct usb_audio_state *s;
-- unsigned char *buffer;
-- unsigned int buflen;
-- unsigned int ctrlif;
-- struct mixerchannel mixch[SOUND_MIXER_NRDEVICES];
-- unsigned int nrmixch;
-- unsigned int mixchmask;
-- unsigned long unitbitmap[32/sizeof(unsigned long)];
-- /* return values */
-- unsigned int nrchannels;
-- unsigned int termtype;
-- unsigned int chconfig;
--};
--
--static struct mixerchannel *getmixchannel(struct consmixstate *state, unsigned int nr)
--{
-- struct mixerchannel *c;
--
-- if (nr >= SOUND_MIXER_NRDEVICES) {
-- printk(KERN_ERR "usbaudio: invalid OSS mixer channel %u\n", nr);
-- return NULL;
-- }
-- if (!(state->mixchmask & (1 << nr))) {
-- printk(KERN_WARNING "usbaudio: OSS mixer channel %u already in use\n", nr);
-- return NULL;
-- }
-- c = &state->mixch[state->nrmixch++];
-- c->osschannel = nr;
-- state->mixchmask &= ~(1 << nr);
-- return c;
--}
--
--static unsigned int getvolchannel(struct consmixstate *state)
--{
-- unsigned int u;
--
-- if ((state->termtype & 0xff00) == 0x0000 && (state->mixchmask & SOUND_MASK_VOLUME))
-- return SOUND_MIXER_VOLUME;
-- if ((state->termtype & 0xff00) == 0x0100) {
-- if (state->mixchmask & SOUND_MASK_PCM)
-- return SOUND_MIXER_PCM;
-- if (state->mixchmask & SOUND_MASK_ALTPCM)
-- return SOUND_MIXER_ALTPCM;
-- }
-- if ((state->termtype & 0xff00) == 0x0200 && (state->mixchmask & SOUND_MASK_MIC))
-- return SOUND_MIXER_MIC;
-- if ((state->termtype & 0xff00) == 0x0300 && (state->mixchmask & SOUND_MASK_SPEAKER))
-- return SOUND_MIXER_SPEAKER;
-- if ((state->termtype & 0xff00) == 0x0500) {
-- if (state->mixchmask & SOUND_MASK_PHONEIN)
-- return SOUND_MIXER_PHONEIN;
-- if (state->mixchmask & SOUND_MASK_PHONEOUT)
-- return SOUND_MIXER_PHONEOUT;
-- }
-- if (state->termtype >= 0x710 && state->termtype <= 0x711 && (state->mixchmask & SOUND_MASK_RADIO))
-- return SOUND_MIXER_RADIO;
-- if (state->termtype >= 0x709 && state->termtype <= 0x70f && (state->mixchmask & SOUND_MASK_VIDEO))
-- return SOUND_MIXER_VIDEO;
-- u = ffs(state->mixchmask & (SOUND_MASK_LINE | SOUND_MASK_CD | SOUND_MASK_LINE1 | SOUND_MASK_LINE2 | SOUND_MASK_LINE3 |
-- SOUND_MASK_DIGITAL1 | SOUND_MASK_DIGITAL2 | SOUND_MASK_DIGITAL3));
-- return u-1;
--}
--
--static void prepmixch(struct consmixstate *state)
--{
-- struct usb_device *dev = state->s->usbdev;
-- struct mixerchannel *ch;
-- unsigned char *buf;
-- __s16 v1;
-- unsigned int v2, v3;
--
-- if (!state->nrmixch || state->nrmixch > SOUND_MIXER_NRDEVICES)
-- return;
-- buf = kmalloc(sizeof(*buf) * 2, GFP_KERNEL);
-- if (!buf) {
-- printk(KERN_ERR "prepmixch: out of memory\n") ;
-- return;
-- }
--
-- ch = &state->mixch[state->nrmixch-1];
-- switch (ch->selector) {
-- case 0: /* mixer unit request */
-- if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MIN, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-- (ch->chnum << 8) | 1, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-- goto err;
-- ch->minval = buf[0] | (buf[1] << 8);
-- if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MAX, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-- (ch->chnum << 8) | 1, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-- goto err;
-- ch->maxval = buf[0] | (buf[1] << 8);
-- v2 = ch->maxval - ch->minval;
-- if (!v2)
-- v2 = 1;
-- if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-- (ch->chnum << 8) | 1, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-- goto err;
-- v1 = buf[0] | (buf[1] << 8);
-- v3 = v1 - ch->minval;
-- v3 = 100 * v3 / v2;
-- if (v3 > 100)
-- v3 = 100;
-- ch->value = v3;
-- if (ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)) {
-- if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-- ((ch->chnum + !!(ch->flags & MIXFLG_STEREOIN)) << 8) | (1 + !!(ch->flags & MIXFLG_STEREOOUT)),
-- state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-- goto err;
-- v1 = buf[0] | (buf[1] << 8);
-- v3 = v1 - ch->minval;
-- v3 = 100 * v3 / v2;
-- if (v3 > 100)
-- v3 = 100;
-- }
-- ch->value |= v3 << 8;
-- break;
--
-- /* various feature unit controls */
-- case VOLUME_CONTROL:
-- if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MIN, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-- (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-- goto err;
-- ch->minval = buf[0] | (buf[1] << 8);
-- if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MAX, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-- (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-- goto err;
-- ch->maxval = buf[0] | (buf[1] << 8);
-- if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-- (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-- goto err;
-- v1 = buf[0] | (buf[1] << 8);
-- v2 = ch->maxval - ch->minval;
-- v3 = v1 - ch->minval;
-- if (!v2)
-- v2 = 1;
-- v3 = 100 * v3 / v2;
-- if (v3 > 100)
-- v3 = 100;
-- ch->value = v3;
-- if (ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)) {
-- if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-- (ch->selector << 8) | (ch->chnum + 1), state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-- goto err;
-- v1 = buf[0] | (buf[1] << 8);
-- v3 = v1 - ch->minval;
-- v3 = 100 * v3 / v2;
-- if (v3 > 100)
-- v3 = 100;
-- }
-- ch->value |= v3 << 8;
-- break;
--
-- case BASS_CONTROL:
-- case MID_CONTROL:
-- case TREBLE_CONTROL:
-- if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MIN, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-- (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 1, 1000) < 0)
-- goto err;
-- ch->minval = buf[0] << 8;
-- if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MAX, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-- (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 1, 1000) < 0)
-- goto err;
-- ch->maxval = buf[0] << 8;
-- if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-- (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 1, 1000) < 0)
-- goto err;
-- v1 = buf[0] << 8;
-- v2 = ch->maxval - ch->minval;
-- v3 = v1 - ch->minval;
-- if (!v2)
-- v2 = 1;
-- v3 = 100 * v3 / v2;
-- if (v3 > 100)
-- v3 = 100;
-- ch->value = v3;
-- if (ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)) {
-- if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-- (ch->selector << 8) | (ch->chnum + 1), state->ctrlif | (ch->unitid << 8), buf, 1, 1000) < 0)
-- goto err;
-- v1 = buf[0] << 8;
-- v3 = v1 - ch->minval;
-- v3 = 100 * v3 / v2;
-- if (v3 > 100)
-- v3 = 100;
-- }
-- ch->value |= v3 << 8;
-- break;
--
-- default:
-- goto err;
-- }
--
-- freebuf:
-- kfree(buf);
-- return;
-- err:
-- printk(KERN_ERR "usbaudio: mixer request device %u if %u unit %u ch %u selector %u failed\n",
-- dev->devnum, state->ctrlif, ch->unitid, ch->chnum, ch->selector);
-- if (state->nrmixch)
-- state->nrmixch--;
-- goto freebuf;
--}
--
--
--static void usb_audio_recurseunit(struct consmixstate *state, unsigned char unitid);
--
--static inline int checkmixbmap(unsigned char *bmap, unsigned char flg, unsigned int inidx, unsigned int numoch)
--{
-- unsigned int idx;
--
-- idx = inidx*numoch;
-- if (!(bmap[-(idx >> 3)] & (0x80 >> (idx & 7))))
-- return 0;
-- if (!(flg & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
-- return 1;
-- idx = (inidx+!!(flg & MIXFLG_STEREOIN))*numoch+!!(flg & MIXFLG_STEREOOUT);
-- if (!(bmap[-(idx >> 3)] & (0x80 >> (idx & 7))))
-- return 0;
-- return 1;
--}
--
--static void usb_audio_mixerunit(struct consmixstate *state, unsigned char *mixer)
--{
-- unsigned int nroutch = mixer[5+mixer[4]];
-- unsigned int chidx[SOUND_MIXER_NRDEVICES+1];
-- unsigned int termt[SOUND_MIXER_NRDEVICES];
-- unsigned char flg = (nroutch >= 2) ? MIXFLG_STEREOOUT : 0;
-- unsigned char *bmap = &mixer[9+mixer[4]];
-- unsigned int bmapsize;
-- struct mixerchannel *ch;
-- unsigned int i;
--
-- if (!mixer[4]) {
-- printk(KERN_ERR "usbaudio: unit %u invalid MIXER_UNIT descriptor\n", mixer[3]);
-- return;
-- }
-- if (mixer[4] > SOUND_MIXER_NRDEVICES) {
-- printk(KERN_ERR "usbaudio: mixer unit %u: too many input pins\n", mixer[3]);
-- return;
-- }
-- chidx[0] = 0;
-- for (i = 0; i < mixer[4]; i++) {
-- usb_audio_recurseunit(state, mixer[5+i]);
-- chidx[i+1] = chidx[i] + state->nrchannels;
-- termt[i] = state->termtype;
-- }
-- state->termtype = 0;
-- state->chconfig = mixer[6+mixer[4]] | (mixer[7+mixer[4]] << 8);
-- bmapsize = (nroutch * chidx[mixer[4]] + 7) >> 3;
-- bmap += bmapsize - 1;
-- if (mixer[0] < 10+mixer[4]+bmapsize) {
-- printk(KERN_ERR "usbaudio: unit %u invalid MIXER_UNIT descriptor (bitmap too small)\n", mixer[3]);
-- return;
-- }
-- for (i = 0; i < mixer[4]; i++) {
-- state->termtype = termt[i];
-- if (chidx[i+1]-chidx[i] >= 2) {
-- flg |= MIXFLG_STEREOIN;
-- if (checkmixbmap(bmap, flg, chidx[i], nroutch)) {
-- ch = getmixchannel(state, getvolchannel(state));
-- if (ch) {
-- ch->unitid = mixer[3];
-- ch->selector = 0;
-- ch->chnum = chidx[i]+1;
-- ch->flags = flg;
-- prepmixch(state);
-- }
-- continue;
-- }
-- }
-- flg &= ~MIXFLG_STEREOIN;
-- if (checkmixbmap(bmap, flg, chidx[i], nroutch)) {
-- ch = getmixchannel(state, getvolchannel(state));
-- if (ch) {
-- ch->unitid = mixer[3];
-- ch->selector = 0;
-- ch->chnum = chidx[i]+1;
-- ch->flags = flg;
-- prepmixch(state);
-- }
-- }
-- }
-- state->termtype = 0;
--}
--
--static struct mixerchannel *slctsrc_findunit(struct consmixstate *state, __u8 unitid)
--{
-- unsigned int i;
--
-- for (i = 0; i < state->nrmixch; i++)
-- if (state->mixch[i].unitid == unitid)
-- return &state->mixch[i];
-- return NULL;
--}
--
--static void usb_audio_selectorunit(struct consmixstate *state, unsigned char *selector)
--{
-- unsigned int chnum, i, mixch;
-- struct mixerchannel *mch;
--
-- if (!selector[4]) {
-- printk(KERN_ERR "usbaudio: unit %u invalid SELECTOR_UNIT descriptor\n", selector[3]);
-- return;
-- }
-- mixch = state->nrmixch;
-- usb_audio_recurseunit(state, selector[5]);
-- if (state->nrmixch != mixch) {
-- mch = &state->mixch[state->nrmixch-1];
-- mch->slctunitid = selector[3] | (1 << 8);
-- } else if ((mch = slctsrc_findunit(state, selector[5]))) {
-- mch->slctunitid = selector[3] | (1 << 8);
-- } else {
-- printk(KERN_INFO "usbaudio: selector unit %u: ignoring channel 1\n", selector[3]);
-- }
-- chnum = state->nrchannels;
-- for (i = 1; i < selector[4]; i++) {
-- mixch = state->nrmixch;
-- usb_audio_recurseunit(state, selector[5+i]);
-- if (chnum != state->nrchannels) {
-- printk(KERN_ERR "usbaudio: selector unit %u: input pins with varying channel numbers\n", selector[3]);
-- state->termtype = 0;
-- state->chconfig = 0;
-- state->nrchannels = 0;
-- return;
-- }
-- if (state->nrmixch != mixch) {
-- mch = &state->mixch[state->nrmixch-1];
-- mch->slctunitid = selector[3] | ((i + 1) << 8);
-- } else if ((mch = slctsrc_findunit(state, selector[5+i]))) {
-- mch->slctunitid = selector[3] | ((i + 1) << 8);
-- } else {
-- printk(KERN_INFO "usbaudio: selector unit %u: ignoring channel %u\n", selector[3], i+1);
-- }
-- }
-- state->termtype = 0;
-- state->chconfig = 0;
--}
--
--/* in the future we might try to handle 3D etc. effect units */
--
--static void usb_audio_processingunit(struct consmixstate *state, unsigned char *proc)
--{
-- unsigned int i;
--
-- for (i = 0; i < proc[6]; i++)
-- usb_audio_recurseunit(state, proc[7+i]);
-- state->nrchannels = proc[7+proc[6]];
-- state->termtype = 0;
-- state->chconfig = proc[8+proc[6]] | (proc[9+proc[6]] << 8);
--}
--
--
--/* See Audio Class Spec, section 4.3.2.5 */
--static void usb_audio_featureunit(struct consmixstate *state, unsigned char *ftr)
--{
-- struct mixerchannel *ch;
-- unsigned short chftr, mchftr;
--#if 0
-- struct usb_device *dev = state->s->usbdev;
-- unsigned char data[1];
--#endif
-- unsigned char nr_logical_channels, i;
--
-- usb_audio_recurseunit(state, ftr[4]);
--
-- if (ftr[5] == 0 ) {
-- printk(KERN_ERR "usbaudio: wrong controls size in feature unit %u\n",ftr[3]);
-- return;
-- }
--
-- if (state->nrchannels == 0) {
-- printk(KERN_ERR "usbaudio: feature unit %u source has no channels\n", ftr[3]);
-- return;
-- }
-- if (state->nrchannels > 2)
-- printk(KERN_WARNING "usbaudio: feature unit %u: OSS mixer interface does not support more than 2 channels\n", ftr[3]);
--
-- nr_logical_channels=(ftr[0]-7)/ftr[5]-1;
--
-- if (nr_logical_channels != state->nrchannels) {
-- printk(KERN_WARNING "usbaudio: warning: found %d of %d logical channels.\n", state->nrchannels,nr_logical_channels);
--
-- if (state->nrchannels == 1 && nr_logical_channels==0) {
-- printk(KERN_INFO "usbaudio: assuming the channel found is the master channel (got a Philips camera?). Should be fine.\n");
-- } else if (state->nrchannels == 1 && nr_logical_channels==2) {
-- printk(KERN_INFO "usbaudio: assuming that a stereo channel connected directly to a mixer is missing in search (got Labtec headset?). Should be fine.\n");
-- state->nrchannels=nr_logical_channels;
-- } else {
-- printk(KERN_WARNING "usbaudio: no idea what's going on..., contact linux-usb-devel@lists.sourceforge.net\n");
-- }
-- }
--
-- /* There is always a master channel */
-- mchftr = ftr[6];
-- /* Binary AND over logical channels if they exist */
-- if (nr_logical_channels) {
-- chftr = ftr[6+ftr[5]];
-- for (i = 2; i <= nr_logical_channels; i++)
-- chftr &= ftr[6+i*ftr[5]];
-- } else {
-- chftr = 0;
-- }
--
-- /* volume control */
-- if (chftr & 2) {
-- ch = getmixchannel(state, getvolchannel(state));
-- if (ch) {
-- ch->unitid = ftr[3];
-- ch->selector = VOLUME_CONTROL;
-- ch->chnum = 1;
-- ch->flags = (state->nrchannels > 1) ? (MIXFLG_STEREOIN | MIXFLG_STEREOOUT) : 0;
-- prepmixch(state);
-- }
-- } else if (mchftr & 2) {
-- ch = getmixchannel(state, getvolchannel(state));
-- if (ch) {
-- ch->unitid = ftr[3];
-- ch->selector = VOLUME_CONTROL;
-- ch->chnum = 0;
-- ch->flags = 0;
-- prepmixch(state);
-- }
-- }
-- /* bass control */
-- if (chftr & 4) {
-- ch = getmixchannel(state, SOUND_MIXER_BASS);
-- if (ch) {
-- ch->unitid = ftr[3];
-- ch->selector = BASS_CONTROL;
-- ch->chnum = 1;
-- ch->flags = (state->nrchannels > 1) ? (MIXFLG_STEREOIN | MIXFLG_STEREOOUT) : 0;
-- prepmixch(state);
-- }
-- } else if (mchftr & 4) {
-- ch = getmixchannel(state, SOUND_MIXER_BASS);
-- if (ch) {
-- ch->unitid = ftr[3];
-- ch->selector = BASS_CONTROL;
-- ch->chnum = 0;
-- ch->flags = 0;
-- prepmixch(state);
-- }
-- }
-- /* treble control */
-- if (chftr & 16) {
-- ch = getmixchannel(state, SOUND_MIXER_TREBLE);
-- if (ch) {
-- ch->unitid = ftr[3];
-- ch->selector = TREBLE_CONTROL;
-- ch->chnum = 1;
-- ch->flags = (state->nrchannels > 1) ? (MIXFLG_STEREOIN | MIXFLG_STEREOOUT) : 0;
-- prepmixch(state);
-- }
-- } else if (mchftr & 16) {
-- ch = getmixchannel(state, SOUND_MIXER_TREBLE);
-- if (ch) {
-- ch->unitid = ftr[3];
-- ch->selector = TREBLE_CONTROL;
-- ch->chnum = 0;
-- ch->flags = 0;
-- prepmixch(state);
-- }
-- }
--#if 0
-- /* if there are mute controls, unmute them */
-- /* does not seem to be necessary, and the Dallas chip does not seem to support the "all" channel (255) */
-- if ((chftr & 1) || (mchftr & 1)) {
-- printk(KERN_DEBUG "usbaudio: unmuting feature unit %u interface %u\n", ftr[3], state->ctrlif);
-- data[0] = 0;
-- if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-- (MUTE_CONTROL << 8) | 0xff, state->ctrlif | (ftr[3] << 8), data, 1, 1000) < 0)
-- printk(KERN_WARNING "usbaudio: failure to unmute feature unit %u interface %u\n", ftr[3], state->ctrlif);
-- }
--#endif
--}
--
--static void usb_audio_recurseunit(struct consmixstate *state, unsigned char unitid)
--{
-- unsigned char *p1;
-- unsigned int i, j;
--
-- if (test_and_set_bit(unitid, state->unitbitmap)) {
-- printk(KERN_INFO "usbaudio: mixer path revisits unit %d\n", unitid);
-- return;
-- }
-- p1 = find_audiocontrol_unit(state->buffer, state->buflen, NULL, unitid, state->ctrlif);
-- if (!p1) {
-- printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid);
-- return;
-- }
-- state->nrchannels = 0;
-- state->termtype = 0;
-- state->chconfig = 0;
-- switch (p1[2]) {
-- case INPUT_TERMINAL:
-- if (p1[0] < 12) {
-- printk(KERN_ERR "usbaudio: unit %u: invalid INPUT_TERMINAL descriptor\n", unitid);
-- return;
-- }
-- state->nrchannels = p1[7];
-- state->termtype = p1[4] | (p1[5] << 8);
-- state->chconfig = p1[8] | (p1[9] << 8);
-- return;
--
-- case MIXER_UNIT:
-- if (p1[0] < 10 || p1[0] < 10+p1[4]) {
-- printk(KERN_ERR "usbaudio: unit %u: invalid MIXER_UNIT descriptor\n", unitid);
-- return;
-- }
-- usb_audio_mixerunit(state, p1);
-- return;
--
-- case SELECTOR_UNIT:
-- if (p1[0] < 6 || p1[0] < 6+p1[4]) {
-- printk(KERN_ERR "usbaudio: unit %u: invalid SELECTOR_UNIT descriptor\n", unitid);
-- return;
-- }
-- usb_audio_selectorunit(state, p1);
-- return;
--
-- case FEATURE_UNIT: /* See USB Audio Class Spec 4.3.2.5 */
-- if (p1[0] < 7 || p1[0] < 7+p1[5]) {
-- printk(KERN_ERR "usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid);
-- return;
-- }
-- usb_audio_featureunit(state, p1);
-- return;
--
-- case PROCESSING_UNIT:
-- if (p1[0] < 13 || p1[0] < 13+p1[6] || p1[0] < 13+p1[6]+p1[11+p1[6]]) {
-- printk(KERN_ERR "usbaudio: unit %u: invalid PROCESSING_UNIT descriptor\n", unitid);
-- return;
-- }
-- usb_audio_processingunit(state, p1);
-- return;
--
-- case EXTENSION_UNIT:
-- if (p1[0] < 13 || p1[0] < 13+p1[6] || p1[0] < 13+p1[6]+p1[11+p1[6]]) {
-- printk(KERN_ERR "usbaudio: unit %u: invalid EXTENSION_UNIT descriptor\n", unitid);
-- return;
-- }
-- for (j = i = 0; i < p1[6]; i++) {
-- usb_audio_recurseunit(state, p1[7+i]);
-- if (!i)
-- j = state->termtype;
-- else if (j != state->termtype)
-- j = 0;
-- }
-- state->nrchannels = p1[7+p1[6]];
-- state->chconfig = p1[8+p1[6]] | (p1[9+p1[6]] << 8);
-- state->termtype = j;
-- return;
--
-- default:
-- printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
-- return;
-- }
--}
--
--static void usb_audio_constructmixer(struct usb_audio_state *s, unsigned char *buffer, unsigned int buflen, unsigned int ctrlif, unsigned char *oterm)
--{
-- struct usb_mixerdev *ms;
-- struct consmixstate state;
--
-- memset(&state, 0, sizeof(state));
-- state.s = s;
-- state.nrmixch = 0;
-- state.mixchmask = ~0;
-- state.buffer = buffer;
-- state.buflen = buflen;
-- state.ctrlif = ctrlif;
-- set_bit(oterm[3], state.unitbitmap); /* mark terminal ID as visited */
-- printk(KERN_DEBUG "usbaudio: constructing mixer for Terminal %u type 0x%04x\n",
-- oterm[3], oterm[4] | (oterm[5] << 8));
-- usb_audio_recurseunit(&state, oterm[7]);
-- if (!state.nrmixch) {
-- printk(KERN_INFO "usbaudio: no mixer controls found for Terminal %u\n", oterm[3]);
-- return;
-- }
-- if (!(ms = kmalloc(sizeof(struct usb_mixerdev)+state.nrmixch*sizeof(struct mixerchannel), GFP_KERNEL)))
-- return;
-- memset(ms, 0, sizeof(struct usb_mixerdev));
-- memcpy(&ms->ch, &state.mixch, state.nrmixch*sizeof(struct mixerchannel));
-- ms->state = s;
-- ms->iface = ctrlif;
-- ms->numch = state.nrmixch;
-- if ((ms->dev_mixer = register_sound_mixer(&usb_mixer_fops, -1)) < 0) {
-- printk(KERN_ERR "usbaudio: cannot register mixer\n");
-- kfree(ms);
-- return;
-- }
-- printk(KERN_INFO "usbaudio: registered mixer 14,%d\n", ms->dev_mixer);
-- list_add_tail(&ms->list, &s->mixerlist);
--}
--
--/* arbitrary limit, we won't check more interfaces than this */
--#define USB_MAXINTERFACES 32
--
--static struct usb_audio_state *usb_audio_parsecontrol(struct usb_device *dev, unsigned char *buffer, unsigned int buflen, unsigned int ctrlif)
--{
-- struct usb_audio_state *s;
-- struct usb_interface *iface;
-- struct usb_host_interface *alt;
-- unsigned char ifin[USB_MAXINTERFACES], ifout[USB_MAXINTERFACES];
-- unsigned char *p1;
-- unsigned int i, j, k, numifin = 0, numifout = 0;
--
-- if (!(s = kmalloc(sizeof(struct usb_audio_state), GFP_KERNEL)))
-- return NULL;
-- memset(s, 0, sizeof(struct usb_audio_state));
-- INIT_LIST_HEAD(&s->audiolist);
-- INIT_LIST_HEAD(&s->mixerlist);
-- s->usbdev = dev;
-- s->count = 1;
--
-- /* find audiocontrol interface */
-- if (!(p1 = find_csinterface_descriptor(buffer, buflen, NULL, HEADER, ctrlif, -1))) {
-- printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u no HEADER found\n",
-- dev->devnum, ctrlif);
-- goto ret;
-- }
-- if (p1[0] < 8 + p1[7]) {
-- printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u HEADER error\n",
-- dev->devnum, ctrlif);
-- goto ret;
-- }
-- if (!p1[7])
-- printk(KERN_INFO "usbaudio: device %d audiocontrol interface %u has no AudioStreaming and MidiStreaming interfaces\n",
-- dev->devnum, ctrlif);
-- for (i = 0; i < p1[7]; i++) {
-- j = p1[8+i];
-- iface = usb_ifnum_to_if(dev, j);
-- if (!iface) {
-- printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u does not exist\n",
-- dev->devnum, ctrlif, j);
-- continue;
-- }
-- if (iface->num_altsetting == 1) {
-- printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u has only 1 altsetting.\n", dev->devnum, ctrlif);
-- continue;
-- }
-- alt = usb_altnum_to_altsetting(iface, 0);
-- if (!alt) {
-- printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u has no altsetting 0\n",
-- dev->devnum, ctrlif, j);
-- continue;
-- }
-- if (alt->desc.bInterfaceClass != USB_CLASS_AUDIO) {
-- printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u is not an AudioClass interface\n",
-- dev->devnum, ctrlif, j);
-- continue;
-- }
-- if (alt->desc.bInterfaceSubClass == 3) {
-- printk(KERN_INFO "usbaudio: device %d audiocontrol interface %u interface %u MIDIStreaming not supported\n",
-- dev->devnum, ctrlif, j);
-- continue;
-- }
-- if (alt->desc.bInterfaceSubClass != 2) {
-- printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u invalid AudioClass subtype\n",
-- dev->devnum, ctrlif, j);
-- continue;
-- }
-- if (alt->desc.bNumEndpoints > 0) {
-- /* Check all endpoints; should they all have a bandwidth of 0 ? */
-- for (k = 0; k < alt->desc.bNumEndpoints; k++) {
-- if (le16_to_cpu(alt->endpoint[k].desc.wMaxPacketSize) > 0) {
-- printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u endpoint %d does not have 0 bandwidth at alt[0]\n", dev->devnum, ctrlif, k);
-- break;
-- }
-- }
-- if (k < alt->desc.bNumEndpoints)
-- continue;
-- }
--
-- alt = usb_altnum_to_altsetting(iface, 1);
-- if (!alt) {
-- printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u has no altsetting 1\n",
-- dev->devnum, ctrlif, j);
-- continue;
-- }
-- if (alt->desc.bNumEndpoints < 1) {
-- printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u has no endpoint\n",
-- dev->devnum, ctrlif, j);
-- continue;
-- }
-- /* note: this requires the data endpoint to be ep0 and the optional sync
-- ep to be ep1, which seems to be the case */
-- if (alt->endpoint[0].desc.bEndpointAddress & USB_DIR_IN) {
-- if (numifin < USB_MAXINTERFACES) {
-- ifin[numifin++] = j;
-- usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1);
-- }
-- } else {
-- if (numifout < USB_MAXINTERFACES) {
-- ifout[numifout++] = j;
-- usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1);
-- }
-- }
-- }
-- printk(KERN_INFO "usbaudio: device %d audiocontrol interface %u has %u input and %u output AudioStreaming interfaces\n",
-- dev->devnum, ctrlif, numifin, numifout);
-- for (i = 0; i < numifin && i < numifout; i++)
-- usb_audio_parsestreaming(s, buffer, buflen, ifin[i], ifout[i]);
-- for (j = i; j < numifin; j++)
-- usb_audio_parsestreaming(s, buffer, buflen, ifin[i], -1);
-- for (j = i; j < numifout; j++)
-- usb_audio_parsestreaming(s, buffer, buflen, -1, ifout[i]);
-- /* now walk through all OUTPUT_TERMINAL descriptors to search for mixers */
-- p1 = find_csinterface_descriptor(buffer, buflen, NULL, OUTPUT_TERMINAL, ctrlif, -1);
-- while (p1) {
-- if (p1[0] >= 9)
-- usb_audio_constructmixer(s, buffer, buflen, ctrlif, p1);
-- p1 = find_csinterface_descriptor(buffer, buflen, p1, OUTPUT_TERMINAL, ctrlif, -1);
-- }
--
--ret:
-- if (list_empty(&s->audiolist) && list_empty(&s->mixerlist)) {
-- kfree(s);
-- return NULL;
-- }
-- /* everything successful */
-- down(&open_sem);
-- list_add_tail(&s->audiodev, &audiodevs);
-- up(&open_sem);
-- printk(KERN_DEBUG "usb_audio_parsecontrol: usb_audio_state at %p\n", s);
-- return s;
--}
--
--/* we only care for the currently active configuration */
--
--static int usb_audio_probe(struct usb_interface *intf,
-- const struct usb_device_id *id)
--{
-- struct usb_device *dev = interface_to_usbdev (intf);
-- struct usb_audio_state *s;
-- unsigned char *buffer;
-- unsigned int buflen;
--
--#if 0
-- printk(KERN_DEBUG "usbaudio: Probing if %i: IC %x, ISC %x\n", ifnum,
-- config->interface[ifnum].altsetting[0].desc.bInterfaceClass,
-- config->interface[ifnum].altsetting[0].desc.bInterfaceSubClass);
--#endif
--
-- /*
-- * audiocontrol interface found
-- * find which configuration number is active
-- */
-- buffer = dev->rawdescriptors[dev->actconfig - dev->config];
-- buflen = le16_to_cpu(dev->actconfig->desc.wTotalLength);
-- s = usb_audio_parsecontrol(dev, buffer, buflen, intf->altsetting->desc.bInterfaceNumber);
-- if (s) {
-- usb_set_intfdata (intf, s);
-- return 0;
-- }
-- return -ENODEV;
--}
--
--
--/* a revoke facility would make things simpler */
--
--static void usb_audio_disconnect(struct usb_interface *intf)
--{
-- struct usb_audio_state *s = usb_get_intfdata (intf);
-- struct usb_audiodev *as;
-- struct usb_mixerdev *ms;
--
-- if (!s)
-- return;
--
-- /* we get called with -1 for every audiostreaming interface registered */
-- if (s == (struct usb_audio_state *)-1) {
-- dprintk((KERN_DEBUG "usbaudio: note, usb_audio_disconnect called with -1\n"));
-- return;
-- }
-- if (!s->usbdev) {
-- dprintk((KERN_DEBUG "usbaudio: error, usb_audio_disconnect already called for %p!\n", s));
-- return;
-- }
-- down(&open_sem);
-- list_del_init(&s->audiodev);
-- s->usbdev = NULL;
-- usb_set_intfdata (intf, NULL);
--
-- /* deregister all audio and mixer devices, so no new processes can open this device */
-- list_for_each_entry(as, &s->audiolist, list) {
-- usbin_disc(as);
-- usbout_disc(as);
-- wake_up(&as->usbin.dma.wait);
-- wake_up(&as->usbout.dma.wait);
-- if (as->dev_audio >= 0) {
-- unregister_sound_dsp(as->dev_audio);
-- printk(KERN_INFO "usbaudio: unregister dsp 14,%d\n", as->dev_audio);
-- }
-- as->dev_audio = -1;
-- }
-- list_for_each_entry(ms, &s->mixerlist, list) {
-- if (ms->dev_mixer >= 0) {
-- unregister_sound_mixer(ms->dev_mixer);
-- printk(KERN_INFO "usbaudio: unregister mixer 14,%d\n", ms->dev_mixer);
-- }
-- ms->dev_mixer = -1;
-- }
-- release(s);
-- wake_up(&open_wait);
--}
--
--static int __init usb_audio_init(void)
--{
-- int result = usb_register(&usb_audio_driver);
-- if (result == 0)
-- info(DRIVER_VERSION ":" DRIVER_DESC);
-- return result;
--}
--
--
--static void __exit usb_audio_cleanup(void)
--{
-- usb_deregister(&usb_audio_driver);
--}
--
--module_init(usb_audio_init);
--module_exit(usb_audio_cleanup);
--
--MODULE_AUTHOR( DRIVER_AUTHOR );
--MODULE_DESCRIPTION( DRIVER_DESC );
--MODULE_LICENSE("GPL");
--
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-18 06:33:43 +0000