diff options
Diffstat (limited to 'drivers/staging/emxx_udc/emxx_udc.c')
| -rw-r--r-- | drivers/staging/emxx_udc/emxx_udc.c | 3223 |
1 files changed, 0 insertions, 3223 deletions
diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c deleted file mode 100644 index eb63daaca702e6..00000000000000 --- a/drivers/staging/emxx_udc/emxx_udc.c +++ /dev/null @@ -1,3223 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * drivers/usb/gadget/emxx_udc.c - * EMXX FCD (Function Controller Driver) for USB. - * - * Copyright (C) 2010 Renesas Electronics Corporation - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/delay.h> -#include <linux/ioport.h> -#include <linux/slab.h> -#include <linux/errno.h> -#include <linux/list.h> -#include <linux/interrupt.h> -#include <linux/proc_fs.h> -#include <linux/clk.h> -#include <linux/ctype.h> -#include <linux/string.h> -#include <linux/dma-mapping.h> -#include <linux/workqueue.h> -#include <linux/device.h> - -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> - -#include <linux/irq.h> -#include <linux/gpio/consumer.h> - -#include "emxx_udc.h" - -#define DRIVER_DESC "EMXX UDC driver" -#define DMA_ADDR_INVALID (~(dma_addr_t)0) - -static struct gpio_desc *vbus_gpio; -static int vbus_irq; - -static const char driver_name[] = "emxx_udc"; - -/*===========================================================================*/ -/* Prototype */ -static void _nbu2ss_ep_dma_abort(struct nbu2ss_udc *, struct nbu2ss_ep *); -static void _nbu2ss_ep0_enable(struct nbu2ss_udc *); -/*static void _nbu2ss_ep0_disable(struct nbu2ss_udc *);*/ -static void _nbu2ss_ep_done(struct nbu2ss_ep *, struct nbu2ss_req *, int); -static void _nbu2ss_set_test_mode(struct nbu2ss_udc *, u32 mode); -static void _nbu2ss_endpoint_toggle_reset(struct nbu2ss_udc *udc, u8 ep_adrs); - -static int _nbu2ss_pullup(struct nbu2ss_udc *, int); -static void _nbu2ss_fifo_flush(struct nbu2ss_udc *, struct nbu2ss_ep *); - -/*===========================================================================*/ -/* Macro */ -#define _nbu2ss_zero_len_pkt(udc, epnum) \ - _nbu2ss_ep_in_end(udc, epnum, 0, 0) - -/*===========================================================================*/ -/* Global */ -static struct nbu2ss_udc udc_controller; - -/*-------------------------------------------------------------------------*/ -/* Read */ -static inline u32 _nbu2ss_readl(void __iomem *address) -{ - return __raw_readl(address); -} - -/*-------------------------------------------------------------------------*/ -/* Write */ -static inline void _nbu2ss_writel(void __iomem *address, u32 udata) -{ - __raw_writel(udata, address); -} - -/*-------------------------------------------------------------------------*/ -/* Set Bit */ -static inline void _nbu2ss_bitset(void __iomem *address, u32 udata) -{ - u32 reg_dt = __raw_readl(address) | (udata); - - __raw_writel(reg_dt, address); -} - -/*-------------------------------------------------------------------------*/ -/* Clear Bit */ -static inline void _nbu2ss_bitclr(void __iomem *address, u32 udata) -{ - u32 reg_dt = __raw_readl(address) & ~(udata); - - __raw_writel(reg_dt, address); -} - -#ifdef UDC_DEBUG_DUMP -/*-------------------------------------------------------------------------*/ -static void _nbu2ss_dump_register(struct nbu2ss_udc *udc) -{ - int i; - u32 reg_data; - - pr_info("=== %s()\n", __func__); - - if (!udc) { - pr_err("%s udc == NULL\n", __func__); - return; - } - - spin_unlock(&udc->lock); - - dev_dbg(&udc->dev, "\n-USB REG-\n"); - for (i = 0x0 ; i < USB_BASE_SIZE ; i += 16) { - reg_data = _nbu2ss_readl(IO_ADDRESS(USB_BASE_ADDRESS + i)); - dev_dbg(&udc->dev, "USB%04x =%08x", i, (int)reg_data); - - reg_data = _nbu2ss_readl(IO_ADDRESS(USB_BASE_ADDRESS + i + 4)); - dev_dbg(&udc->dev, " %08x", (int)reg_data); - - reg_data = _nbu2ss_readl(IO_ADDRESS(USB_BASE_ADDRESS + i + 8)); - dev_dbg(&udc->dev, " %08x", (int)reg_data); - - reg_data = _nbu2ss_readl(IO_ADDRESS(USB_BASE_ADDRESS + i + 12)); - dev_dbg(&udc->dev, " %08x\n", (int)reg_data); - } - - spin_lock(&udc->lock); -} -#endif /* UDC_DEBUG_DUMP */ - -/*-------------------------------------------------------------------------*/ -/* Endpoint 0 Callback (Complete) */ -static void _nbu2ss_ep0_complete(struct usb_ep *_ep, struct usb_request *_req) -{ - u8 recipient; - u16 selector; - u16 wIndex; - u32 test_mode; - struct usb_ctrlrequest *p_ctrl; - struct nbu2ss_udc *udc; - - if (!_ep || !_req) - return; - - udc = (struct nbu2ss_udc *)_req->context; - p_ctrl = &udc->ctrl; - if ((p_ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { - if (p_ctrl->bRequest == USB_REQ_SET_FEATURE) { - /*-------------------------------------------------*/ - /* SET_FEATURE */ - recipient = (u8)(p_ctrl->bRequestType & USB_RECIP_MASK); - selector = le16_to_cpu(p_ctrl->wValue); - if ((recipient == USB_RECIP_DEVICE) && - (selector == USB_DEVICE_TEST_MODE)) { - wIndex = le16_to_cpu(p_ctrl->wIndex); - test_mode = (u32)(wIndex >> 8); - _nbu2ss_set_test_mode(udc, test_mode); - } - } - } -} - -/*-------------------------------------------------------------------------*/ -/* Initialization usb_request */ -static void _nbu2ss_create_ep0_packet(struct nbu2ss_udc *udc, - void *p_buf, unsigned int length) -{ - udc->ep0_req.req.buf = p_buf; - udc->ep0_req.req.length = length; - udc->ep0_req.req.dma = 0; - udc->ep0_req.req.zero = true; - udc->ep0_req.req.complete = _nbu2ss_ep0_complete; - udc->ep0_req.req.status = -EINPROGRESS; - udc->ep0_req.req.context = udc; - udc->ep0_req.req.actual = 0; -} - -/*-------------------------------------------------------------------------*/ -/* Acquisition of the first address of RAM(FIFO) */ -static u32 _nbu2ss_get_begin_ram_address(struct nbu2ss_udc *udc) -{ - u32 num, buf_type; - u32 data, last_ram_adr, use_ram_size; - - struct ep_regs __iomem *p_ep_regs; - - last_ram_adr = (D_RAM_SIZE_CTRL / sizeof(u32)) * 2; - use_ram_size = 0; - - for (num = 0; num < NUM_ENDPOINTS - 1; num++) { - p_ep_regs = &udc->p_regs->EP_REGS[num]; - data = _nbu2ss_readl(&p_ep_regs->EP_PCKT_ADRS); - buf_type = _nbu2ss_readl(&p_ep_regs->EP_CONTROL) & EPN_BUF_TYPE; - if (buf_type == 0) { - /* Single Buffer */ - use_ram_size += (data & EPN_MPKT) / sizeof(u32); - } else { - /* Double Buffer */ - use_ram_size += ((data & EPN_MPKT) / sizeof(u32)) * 2; - } - - if ((data >> 16) > last_ram_adr) - last_ram_adr = data >> 16; - } - - return last_ram_adr + use_ram_size; -} - -/*-------------------------------------------------------------------------*/ -/* Construction of Endpoint */ -static int _nbu2ss_ep_init(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) -{ - u32 num; - u32 data; - u32 begin_adrs; - - if (ep->epnum == 0) - return -EINVAL; - - num = ep->epnum - 1; - - /*-------------------------------------------------------------*/ - /* RAM Transfer Address */ - begin_adrs = _nbu2ss_get_begin_ram_address(udc); - data = (begin_adrs << 16) | ep->ep.maxpacket; - _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_PCKT_ADRS, data); - - /*-------------------------------------------------------------*/ - /* Interrupt Enable */ - data = 1 << (ep->epnum + 8); - _nbu2ss_bitset(&udc->p_regs->USB_INT_ENA, data); - - /*-------------------------------------------------------------*/ - /* Endpoint Type(Mode) */ - /* Bulk, Interrupt, ISO */ - switch (ep->ep_type) { - case USB_ENDPOINT_XFER_BULK: - data = EPN_BULK; - break; - - case USB_ENDPOINT_XFER_INT: - data = EPN_BUF_SINGLE | EPN_INTERRUPT; - break; - - case USB_ENDPOINT_XFER_ISOC: - data = EPN_ISO; - break; - - default: - data = 0; - break; - } - - _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); - _nbu2ss_endpoint_toggle_reset(udc, (ep->epnum | ep->direct)); - - if (ep->direct == USB_DIR_OUT) { - /*---------------------------------------------------------*/ - /* OUT */ - data = EPN_EN | EPN_BCLR | EPN_DIR0; - _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); - - data = EPN_ONAK | EPN_OSTL_EN | EPN_OSTL; - _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); - - data = EPN_OUT_EN | EPN_OUT_END_EN; - _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data); - } else { - /*---------------------------------------------------------*/ - /* IN */ - data = EPN_EN | EPN_BCLR | EPN_AUTO; - _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); - - data = EPN_ISTL; - _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); - - data = EPN_IN_EN | EPN_IN_END_EN; - _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data); - } - - return 0; -} - -/*-------------------------------------------------------------------------*/ -/* Release of Endpoint */ -static int _nbu2ss_epn_exit(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) -{ - u32 num; - u32 data; - - if ((ep->epnum == 0) || (udc->vbus_active == 0)) - return -EINVAL; - - num = ep->epnum - 1; - - /*-------------------------------------------------------------*/ - /* RAM Transfer Address */ - _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_PCKT_ADRS, 0); - - /*-------------------------------------------------------------*/ - /* Interrupt Disable */ - data = 1 << (ep->epnum + 8); - _nbu2ss_bitclr(&udc->p_regs->USB_INT_ENA, data); - - if (ep->direct == USB_DIR_OUT) { - /*---------------------------------------------------------*/ - /* OUT */ - data = EPN_ONAK | EPN_BCLR; - _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); - - data = EPN_EN | EPN_DIR0; - _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); - - data = EPN_OUT_EN | EPN_OUT_END_EN; - _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data); - } else { - /*---------------------------------------------------------*/ - /* IN */ - data = EPN_BCLR; - _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); - - data = EPN_EN | EPN_AUTO; - _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); - - data = EPN_IN_EN | EPN_IN_END_EN; - _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data); - } - - return 0; -} - -/*-------------------------------------------------------------------------*/ -/* DMA setting (without Endpoint 0) */ -static void _nbu2ss_ep_dma_init(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) -{ - u32 num; - u32 data; - - data = _nbu2ss_readl(&udc->p_regs->USBSSCONF); - if (((ep->epnum == 0) || (data & (1 << ep->epnum)) == 0)) - return; /* Not Support DMA */ - - num = ep->epnum - 1; - - if (ep->direct == USB_DIR_OUT) { - /*---------------------------------------------------------*/ - /* OUT */ - data = ep->ep.maxpacket; - _nbu2ss_writel(&udc->p_regs->EP_DCR[num].EP_DCR2, data); - - /*---------------------------------------------------------*/ - /* Transfer Direct */ - data = DCR1_EPN_DIR0; - _nbu2ss_bitset(&udc->p_regs->EP_DCR[num].EP_DCR1, data); - - /*---------------------------------------------------------*/ - /* DMA Mode etc. */ - data = EPN_STOP_MODE | EPN_STOP_SET | EPN_DMAMODE0; - _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_DMA_CTRL, data); - } else { - /*---------------------------------------------------------*/ - /* IN */ - _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, EPN_AUTO); - - /*---------------------------------------------------------*/ - /* DMA Mode etc. */ - data = EPN_BURST_SET | EPN_DMAMODE0; - _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_DMA_CTRL, data); - } -} - -/*-------------------------------------------------------------------------*/ -/* DMA setting release */ -static void _nbu2ss_ep_dma_exit(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) -{ - u32 num; - u32 data; - struct fc_regs __iomem *preg = udc->p_regs; - - if (udc->vbus_active == 0) - return; /* VBUS OFF */ - - data = _nbu2ss_readl(&preg->USBSSCONF); - if ((ep->epnum == 0) || ((data & (1 << ep->epnum)) == 0)) - return; /* Not Support DMA */ - - num = ep->epnum - 1; - - _nbu2ss_ep_dma_abort(udc, ep); - - if (ep->direct == USB_DIR_OUT) { - /*---------------------------------------------------------*/ - /* OUT */ - _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR2, 0); - _nbu2ss_bitclr(&preg->EP_DCR[num].EP_DCR1, DCR1_EPN_DIR0); - _nbu2ss_writel(&preg->EP_REGS[num].EP_DMA_CTRL, 0); - } else { - /*---------------------------------------------------------*/ - /* IN */ - _nbu2ss_bitclr(&preg->EP_REGS[num].EP_CONTROL, EPN_AUTO); - _nbu2ss_writel(&preg->EP_REGS[num].EP_DMA_CTRL, 0); - } -} - -/*-------------------------------------------------------------------------*/ -/* Abort DMA */ -static void _nbu2ss_ep_dma_abort(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) -{ - struct fc_regs __iomem *preg = udc->p_regs; - - _nbu2ss_bitclr(&preg->EP_DCR[ep->epnum - 1].EP_DCR1, DCR1_EPN_REQEN); - mdelay(DMA_DISABLE_TIME); /* DCR1_EPN_REQEN Clear */ - _nbu2ss_bitclr(&preg->EP_REGS[ep->epnum - 1].EP_DMA_CTRL, EPN_DMA_EN); -} - -/*-------------------------------------------------------------------------*/ -/* Start IN Transfer */ -static void _nbu2ss_ep_in_end(struct nbu2ss_udc *udc, - u32 epnum, u32 data32, u32 length) -{ - u32 data; - u32 num; - struct fc_regs __iomem *preg = udc->p_regs; - - if (length >= sizeof(u32)) - return; - - if (epnum == 0) { - _nbu2ss_bitclr(&preg->EP0_CONTROL, EP0_AUTO); - - /* Writing of 1-4 bytes */ - if (length) - _nbu2ss_writel(&preg->EP0_WRITE, data32); - - data = ((length << 5) & EP0_DW) | EP0_DEND; - _nbu2ss_writel(&preg->EP0_CONTROL, data); - - _nbu2ss_bitset(&preg->EP0_CONTROL, EP0_AUTO); - } else { - num = epnum - 1; - - _nbu2ss_bitclr(&preg->EP_REGS[num].EP_CONTROL, EPN_AUTO); - - /* Writing of 1-4 bytes */ - if (length) - _nbu2ss_writel(&preg->EP_REGS[num].EP_WRITE, data32); - - data = (((length) << 5) & EPN_DW) | EPN_DEND; - _nbu2ss_bitset(&preg->EP_REGS[num].EP_CONTROL, data); - - _nbu2ss_bitset(&preg->EP_REGS[num].EP_CONTROL, EPN_AUTO); - } -} - -#ifdef USE_DMA -/*-------------------------------------------------------------------------*/ -static void _nbu2ss_dma_map_single(struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req, u8 direct) -{ - if (req->req.dma == DMA_ADDR_INVALID) { - if (req->unaligned) { - req->req.dma = ep->phys_buf; - } else { - req->req.dma = dma_map_single(udc->gadget.dev.parent, - req->req.buf, - req->req.length, - (direct == USB_DIR_IN) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - } - req->mapped = 1; - } else { - if (!req->unaligned) - dma_sync_single_for_device(udc->gadget.dev.parent, - req->req.dma, - req->req.length, - (direct == USB_DIR_IN) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - - req->mapped = 0; - } -} - -/*-------------------------------------------------------------------------*/ -static void _nbu2ss_dma_unmap_single(struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req, u8 direct) -{ - u8 data[4]; - u8 *p; - u32 count = 0; - - if (direct == USB_DIR_OUT) { - count = req->req.actual % 4; - if (count) { - p = req->req.buf; - p += (req->req.actual - count); - memcpy(data, p, count); - } - } - - if (req->mapped) { - if (req->unaligned) { - if (direct == USB_DIR_OUT) - memcpy(req->req.buf, ep->virt_buf, - req->req.actual & 0xfffffffc); - } else { - dma_unmap_single(udc->gadget.dev.parent, - req->req.dma, req->req.length, - (direct == USB_DIR_IN) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - } - req->req.dma = DMA_ADDR_INVALID; - req->mapped = 0; - } else { - if (!req->unaligned) - dma_sync_single_for_cpu(udc->gadget.dev.parent, - req->req.dma, req->req.length, - (direct == USB_DIR_IN) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - } - - if (count) { - p = req->req.buf; - p += (req->req.actual - count); - memcpy(p, data, count); - } -} -#endif - -/*-------------------------------------------------------------------------*/ -/* Endpoint 0 OUT Transfer (PIO) */ -static int ep0_out_pio(struct nbu2ss_udc *udc, u8 *buf, u32 length) -{ - u32 i; - u32 numreads = length / sizeof(u32); - union usb_reg_access *buf32 = (union usb_reg_access *)buf; - - if (!numreads) - return 0; - - /* PIO Read */ - for (i = 0; i < numreads; i++) { - buf32->dw = _nbu2ss_readl(&udc->p_regs->EP0_READ); - buf32++; - } - - return numreads * sizeof(u32); -} - -/*-------------------------------------------------------------------------*/ -/* Endpoint 0 OUT Transfer (PIO, OverBytes) */ -static int ep0_out_overbytes(struct nbu2ss_udc *udc, u8 *p_buf, u32 length) -{ - u32 i; - u32 i_read_size = 0; - union usb_reg_access temp_32; - union usb_reg_access *p_buf_32 = (union usb_reg_access *)p_buf; - - if ((length > 0) && (length < sizeof(u32))) { - temp_32.dw = _nbu2ss_readl(&udc->p_regs->EP0_READ); - for (i = 0 ; i < length ; i++) - p_buf_32->byte.DATA[i] = temp_32.byte.DATA[i]; - i_read_size += length; - } - - return i_read_size; -} - -/*-------------------------------------------------------------------------*/ -/* Endpoint 0 IN Transfer (PIO) */ -static int EP0_in_PIO(struct nbu2ss_udc *udc, u8 *p_buf, u32 length) -{ - u32 i; - u32 i_max_length = EP0_PACKETSIZE; - u32 i_word_length = 0; - u32 i_write_length = 0; - union usb_reg_access *p_buf_32 = (union usb_reg_access *)p_buf; - - /*------------------------------------------------------------*/ - /* Transfer Length */ - if (i_max_length < length) - i_word_length = i_max_length / sizeof(u32); - else - i_word_length = length / sizeof(u32); - - /*------------------------------------------------------------*/ - /* PIO */ - for (i = 0; i < i_word_length; i++) { - _nbu2ss_writel(&udc->p_regs->EP0_WRITE, p_buf_32->dw); - p_buf_32++; - i_write_length += sizeof(u32); - } - - return i_write_length; -} - -/*-------------------------------------------------------------------------*/ -/* Endpoint 0 IN Transfer (PIO, OverBytes) */ -static int ep0_in_overbytes(struct nbu2ss_udc *udc, - u8 *p_buf, - u32 i_remain_size) -{ - u32 i; - union usb_reg_access temp_32; - union usb_reg_access *p_buf_32 = (union usb_reg_access *)p_buf; - - if ((i_remain_size > 0) && (i_remain_size < sizeof(u32))) { - for (i = 0 ; i < i_remain_size ; i++) - temp_32.byte.DATA[i] = p_buf_32->byte.DATA[i]; - _nbu2ss_ep_in_end(udc, 0, temp_32.dw, i_remain_size); - - return i_remain_size; - } - - return 0; -} - -/*-------------------------------------------------------------------------*/ -/* Transfer NULL Packet (Epndoint 0) */ -static int EP0_send_NULL(struct nbu2ss_udc *udc, bool pid_flag) -{ - u32 data; - - data = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL); - data &= ~(u32)EP0_INAK; - - if (pid_flag) - data |= (EP0_INAK_EN | EP0_PIDCLR | EP0_DEND); - else - data |= (EP0_INAK_EN | EP0_DEND); - - _nbu2ss_writel(&udc->p_regs->EP0_CONTROL, data); - - return 0; -} - -/*-------------------------------------------------------------------------*/ -/* Receive NULL Packet (Endpoint 0) */ -static int EP0_receive_NULL(struct nbu2ss_udc *udc, bool pid_flag) -{ - u32 data; - - data = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL); - data &= ~(u32)EP0_ONAK; - - if (pid_flag) - data |= EP0_PIDCLR; - - _nbu2ss_writel(&udc->p_regs->EP0_CONTROL, data); - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_ep0_in_transfer(struct nbu2ss_udc *udc, - struct nbu2ss_req *req) -{ - u8 *p_buffer; /* IN Data Buffer */ - u32 data; - u32 i_remain_size = 0; - int result = 0; - - /*-------------------------------------------------------------*/ - /* End confirmation */ - if (req->req.actual == req->req.length) { - if ((req->req.actual % EP0_PACKETSIZE) == 0) { - if (req->zero) { - req->zero = false; - EP0_send_NULL(udc, false); - return 1; - } - } - - return 0; /* Transfer End */ - } - - /*-------------------------------------------------------------*/ - /* NAK release */ - data = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL); - data |= EP0_INAK_EN; - data &= ~(u32)EP0_INAK; - _nbu2ss_writel(&udc->p_regs->EP0_CONTROL, data); - - i_remain_size = req->req.length - req->req.actual; - p_buffer = (u8 *)req->req.buf; - p_buffer += req->req.actual; - - /*-------------------------------------------------------------*/ - /* Data transfer */ - result = EP0_in_PIO(udc, p_buffer, i_remain_size); - - req->div_len = result; - i_remain_size -= result; - - if (i_remain_size == 0) { - EP0_send_NULL(udc, false); - return result; - } - - if ((i_remain_size < sizeof(u32)) && (result != EP0_PACKETSIZE)) { - p_buffer += result; - result += ep0_in_overbytes(udc, p_buffer, i_remain_size); - req->div_len = result; - } - - return result; -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_ep0_out_transfer(struct nbu2ss_udc *udc, - struct nbu2ss_req *req) -{ - u8 *p_buffer; - u32 i_remain_size; - u32 i_recv_length; - int result = 0; - int f_rcv_zero; - - /*-------------------------------------------------------------*/ - /* Receive data confirmation */ - i_recv_length = _nbu2ss_readl(&udc->p_regs->EP0_LENGTH) & EP0_LDATA; - if (i_recv_length != 0) { - f_rcv_zero = 0; - - i_remain_size = req->req.length - req->req.actual; - p_buffer = (u8 *)req->req.buf; - p_buffer += req->req.actual; - - result = ep0_out_pio(udc, p_buffer - , min(i_remain_size, i_recv_length)); - if (result < 0) - return result; - - req->req.actual += result; - i_recv_length -= result; - - if ((i_recv_length > 0) && (i_recv_length < sizeof(u32))) { - p_buffer += result; - i_remain_size -= result; - - result = ep0_out_overbytes(udc, p_buffer - , min(i_remain_size, i_recv_length)); - req->req.actual += result; - } - } else { - f_rcv_zero = 1; - } - - /*-------------------------------------------------------------*/ - /* End confirmation */ - if (req->req.actual == req->req.length) { - if ((req->req.actual % EP0_PACKETSIZE) == 0) { - if (req->zero) { - req->zero = false; - EP0_receive_NULL(udc, false); - return 1; - } - } - - return 0; /* Transfer End */ - } - - if ((req->req.actual % EP0_PACKETSIZE) != 0) - return 0; /* Short Packet Transfer End */ - - if (req->req.actual > req->req.length) { - dev_err(udc->dev, " *** Overrun Error\n"); - return -EOVERFLOW; - } - - if (f_rcv_zero != 0) { - i_remain_size = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL); - if (i_remain_size & EP0_ONAK) { - /*---------------------------------------------------*/ - /* NACK release */ - _nbu2ss_bitclr(&udc->p_regs->EP0_CONTROL, EP0_ONAK); - } - result = 1; - } - - return result; -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_out_dma(struct nbu2ss_udc *udc, struct nbu2ss_req *req, - u32 num, u32 length) -{ - dma_addr_t p_buffer; - u32 mpkt; - u32 lmpkt; - u32 dmacnt; - u32 burst = 1; - u32 data; - int result; - struct fc_regs __iomem *preg = udc->p_regs; - - if (req->dma_flag) - return 1; /* DMA is forwarded */ - - req->dma_flag = true; - p_buffer = req->req.dma; - p_buffer += req->req.actual; - - /* DMA Address */ - _nbu2ss_writel(&preg->EP_DCR[num].EP_TADR, (u32)p_buffer); - - /* Number of transfer packets */ - mpkt = _nbu2ss_readl(&preg->EP_REGS[num].EP_PCKT_ADRS) & EPN_MPKT; - dmacnt = length / mpkt; - lmpkt = (length % mpkt) & ~(u32)0x03; - - if (dmacnt > DMA_MAX_COUNT) { - dmacnt = DMA_MAX_COUNT; - lmpkt = 0; - } else if (lmpkt != 0) { - if (dmacnt == 0) - burst = 0; /* Burst OFF */ - dmacnt++; - } - - data = mpkt | (lmpkt << 16); - _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR2, data); - - data = ((dmacnt & 0xff) << 16) | DCR1_EPN_DIR0 | DCR1_EPN_REQEN; - _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR1, data); - - if (burst == 0) { - _nbu2ss_writel(&preg->EP_REGS[num].EP_LEN_DCNT, 0); - _nbu2ss_bitclr(&preg->EP_REGS[num].EP_DMA_CTRL, EPN_BURST_SET); - } else { - _nbu2ss_writel(&preg->EP_REGS[num].EP_LEN_DCNT - , (dmacnt << 16)); - _nbu2ss_bitset(&preg->EP_REGS[num].EP_DMA_CTRL, EPN_BURST_SET); - } - _nbu2ss_bitset(&preg->EP_REGS[num].EP_DMA_CTRL, EPN_DMA_EN); - - result = length & ~(u32)0x03; - req->div_len = result; - - return result; -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_epn_out_pio(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep, - struct nbu2ss_req *req, u32 length) -{ - u8 *p_buffer; - u32 i; - u32 data; - u32 i_word_length; - union usb_reg_access temp_32; - union usb_reg_access *p_buf_32; - int result = 0; - struct fc_regs __iomem *preg = udc->p_regs; - - if (req->dma_flag) - return 1; /* DMA is forwarded */ - - if (length == 0) - return 0; - - p_buffer = (u8 *)req->req.buf; - p_buf_32 = (union usb_reg_access *)(p_buffer + req->req.actual); - - i_word_length = length / sizeof(u32); - if (i_word_length > 0) { - /*---------------------------------------------------------*/ - /* Copy of every four bytes */ - for (i = 0; i < i_word_length; i++) { - p_buf_32->dw = - _nbu2ss_readl(&preg->EP_REGS[ep->epnum - 1].EP_READ); - p_buf_32++; - } - result = i_word_length * sizeof(u32); - } - - data = length - result; - if (data > 0) { - /*---------------------------------------------------------*/ - /* Copy of fraction byte */ - temp_32.dw = - _nbu2ss_readl(&preg->EP_REGS[ep->epnum - 1].EP_READ); - for (i = 0 ; i < data ; i++) - p_buf_32->byte.DATA[i] = temp_32.byte.DATA[i]; - result += data; - } - - req->req.actual += result; - - if ((req->req.actual == req->req.length) || - ((req->req.actual % ep->ep.maxpacket) != 0)) { - result = 0; - } - - return result; -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_epn_out_data(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep, - struct nbu2ss_req *req, u32 data_size) -{ - u32 num; - u32 i_buf_size; - int nret = 1; - - if (ep->epnum == 0) - return -EINVAL; - - num = ep->epnum - 1; - - i_buf_size = min((req->req.length - req->req.actual), data_size); - - if ((ep->ep_type != USB_ENDPOINT_XFER_INT) && (req->req.dma != 0) && - (i_buf_size >= sizeof(u32))) { - nret = _nbu2ss_out_dma(udc, req, num, i_buf_size); - } else { - i_buf_size = min_t(u32, i_buf_size, ep->ep.maxpacket); - nret = _nbu2ss_epn_out_pio(udc, ep, req, i_buf_size); - } - - return nret; -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_epn_out_transfer(struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req) -{ - u32 num; - u32 i_recv_length; - int result = 1; - struct fc_regs __iomem *preg = udc->p_regs; - - if (ep->epnum == 0) - return -EINVAL; - - num = ep->epnum - 1; - - /*-------------------------------------------------------------*/ - /* Receive Length */ - i_recv_length = - _nbu2ss_readl(&preg->EP_REGS[num].EP_LEN_DCNT) & EPN_LDATA; - - if (i_recv_length != 0) { - result = _nbu2ss_epn_out_data(udc, ep, req, i_recv_length); - if (i_recv_length < ep->ep.maxpacket) { - if (i_recv_length == result) { - req->req.actual += result; - result = 0; - } - } - } else { - if ((req->req.actual == req->req.length) || - ((req->req.actual % ep->ep.maxpacket) != 0)) { - result = 0; - } - } - - if (result == 0) { - if ((req->req.actual % ep->ep.maxpacket) == 0) { - if (req->zero) { - req->zero = false; - return 1; - } - } - } - - if (req->req.actual > req->req.length) { - dev_err(udc->dev, " Overrun Error\n"); - dev_err(udc->dev, " actual = %d, length = %d\n", - req->req.actual, req->req.length); - result = -EOVERFLOW; - } - - return result; -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_in_dma(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep, - struct nbu2ss_req *req, u32 num, u32 length) -{ - dma_addr_t p_buffer; - u32 mpkt; /* MaxPacketSize */ - u32 lmpkt; /* Last Packet Data Size */ - u32 dmacnt; /* IN Data Size */ - u32 i_write_length; - u32 data; - int result = -EINVAL; - struct fc_regs __iomem *preg = udc->p_regs; - - if (req->dma_flag) - return 1; /* DMA is forwarded */ - -#ifdef USE_DMA - if (req->req.actual == 0) - _nbu2ss_dma_map_single(udc, ep, req, USB_DIR_IN); -#endif - req->dma_flag = true; - - /* MAX Packet Size */ - mpkt = _nbu2ss_readl(&preg->EP_REGS[num].EP_PCKT_ADRS) & EPN_MPKT; - - i_write_length = min(DMA_MAX_COUNT * mpkt, length); - - /*------------------------------------------------------------*/ - /* Number of transmission packets */ - if (mpkt < i_write_length) { - dmacnt = i_write_length / mpkt; - lmpkt = (i_write_length % mpkt) & ~(u32)0x3; - if (lmpkt != 0) - dmacnt++; - else - lmpkt = mpkt & ~(u32)0x3; - - } else { - dmacnt = 1; - lmpkt = i_write_length & ~(u32)0x3; - } - - /* Packet setting */ - data = mpkt | (lmpkt << 16); - _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR2, data); - - /* Address setting */ - p_buffer = req->req.dma; - p_buffer += req->req.actual; - _nbu2ss_writel(&preg->EP_DCR[num].EP_TADR, (u32)p_buffer); - - /* Packet and DMA setting */ - data = ((dmacnt & 0xff) << 16) | DCR1_EPN_REQEN; - _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR1, data); - - /* Packet setting of EPC */ - data = dmacnt << 16; - _nbu2ss_writel(&preg->EP_REGS[num].EP_LEN_DCNT, data); - - /*DMA setting of EPC */ - _nbu2ss_bitset(&preg->EP_REGS[num].EP_DMA_CTRL, EPN_DMA_EN); - - result = i_write_length & ~(u32)0x3; - req->div_len = result; - - return result; -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_epn_in_pio(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep, - struct nbu2ss_req *req, u32 length) -{ - u8 *p_buffer; - u32 i; - u32 data; - u32 i_word_length; - union usb_reg_access temp_32; - union usb_reg_access *p_buf_32 = NULL; - int result = 0; - struct fc_regs __iomem *preg = udc->p_regs; - - if (req->dma_flag) - return 1; /* DMA is forwarded */ - - if (length > 0) { - p_buffer = (u8 *)req->req.buf; - p_buf_32 = (union usb_reg_access *)(p_buffer + req->req.actual); - - i_word_length = length / sizeof(u32); - if (i_word_length > 0) { - for (i = 0; i < i_word_length; i++) { - _nbu2ss_writel(&preg->EP_REGS[ep->epnum - 1].EP_WRITE, - p_buf_32->dw); - - p_buf_32++; - } - result = i_word_length * sizeof(u32); - } - } - - if (result != ep->ep.maxpacket) { - data = length - result; - temp_32.dw = 0; - for (i = 0 ; i < data ; i++) - temp_32.byte.DATA[i] = p_buf_32->byte.DATA[i]; - - _nbu2ss_ep_in_end(udc, ep->epnum, temp_32.dw, data); - result += data; - } - - req->div_len = result; - - return result; -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_epn_in_data(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep, - struct nbu2ss_req *req, u32 data_size) -{ - u32 num; - int nret = 1; - - if (ep->epnum == 0) - return -EINVAL; - - num = ep->epnum - 1; - - if ((ep->ep_type != USB_ENDPOINT_XFER_INT) && (req->req.dma != 0) && - (data_size >= sizeof(u32))) { - nret = _nbu2ss_in_dma(udc, ep, req, num, data_size); - } else { - data_size = min_t(u32, data_size, ep->ep.maxpacket); - nret = _nbu2ss_epn_in_pio(udc, ep, req, data_size); - } - - return nret; -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_epn_in_transfer(struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, struct nbu2ss_req *req) -{ - u32 num; - u32 i_buf_size; - int result = 0; - u32 status; - - if (ep->epnum == 0) - return -EINVAL; - - num = ep->epnum - 1; - - status = _nbu2ss_readl(&udc->p_regs->EP_REGS[num].EP_STATUS); - - /*-------------------------------------------------------------*/ - /* State confirmation of FIFO */ - if (req->req.actual == 0) { - if ((status & EPN_IN_EMPTY) == 0) - return 1; /* Not Empty */ - - } else { - if ((status & EPN_IN_FULL) != 0) - return 1; /* Not Empty */ - } - - /*-------------------------------------------------------------*/ - /* Start transfer */ - i_buf_size = req->req.length - req->req.actual; - if (i_buf_size > 0) - result = _nbu2ss_epn_in_data(udc, ep, req, i_buf_size); - else if (req->req.length == 0) - _nbu2ss_zero_len_pkt(udc, ep->epnum); - - return result; -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_start_transfer(struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req, - bool bflag) -{ - int nret = -EINVAL; - - req->dma_flag = false; - req->div_len = 0; - - if (req->req.length == 0) { - req->zero = false; - } else { - if ((req->req.length % ep->ep.maxpacket) == 0) - req->zero = req->req.zero; - else - req->zero = false; - } - - if (ep->epnum == 0) { - /* EP0 */ - switch (udc->ep0state) { - case EP0_IN_DATA_PHASE: - nret = _nbu2ss_ep0_in_transfer(udc, req); - break; - - case EP0_OUT_DATA_PHASE: - nret = _nbu2ss_ep0_out_transfer(udc, req); - break; - - case EP0_IN_STATUS_PHASE: - nret = EP0_send_NULL(udc, true); - break; - - default: - break; - } - - } else { - /* EPN */ - if (ep->direct == USB_DIR_OUT) { - /* OUT */ - if (!bflag) - nret = _nbu2ss_epn_out_transfer(udc, ep, req); - } else { - /* IN */ - nret = _nbu2ss_epn_in_transfer(udc, ep, req); - } - } - - return nret; -} - -/*-------------------------------------------------------------------------*/ -static void _nbu2ss_restert_transfer(struct nbu2ss_ep *ep) -{ - u32 length; - bool bflag = false; - struct nbu2ss_req *req; - - req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue); - if (!req) - return; - - if (ep->epnum > 0) { - length = _nbu2ss_readl(&ep->udc->p_regs->EP_REGS[ep->epnum - 1].EP_LEN_DCNT); - - length &= EPN_LDATA; - if (length < ep->ep.maxpacket) - bflag = true; - } - - _nbu2ss_start_transfer(ep->udc, ep, req, bflag); -} - -/*-------------------------------------------------------------------------*/ -/* Endpoint Toggle Reset */ -static void _nbu2ss_endpoint_toggle_reset(struct nbu2ss_udc *udc, u8 ep_adrs) -{ - u8 num; - u32 data; - - if ((ep_adrs == 0) || (ep_adrs == 0x80)) - return; - - num = (ep_adrs & 0x7F) - 1; - - if (ep_adrs & USB_DIR_IN) - data = EPN_IPIDCLR; - else - data = EPN_BCLR | EPN_OPIDCLR; - - _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); -} - -/*-------------------------------------------------------------------------*/ -/* Endpoint STALL set */ -static void _nbu2ss_set_endpoint_stall(struct nbu2ss_udc *udc, - u8 ep_adrs, bool bstall) -{ - u8 num, epnum; - u32 data; - struct nbu2ss_ep *ep; - struct fc_regs __iomem *preg = udc->p_regs; - - if ((ep_adrs == 0) || (ep_adrs == 0x80)) { - if (bstall) { - /* Set STALL */ - _nbu2ss_bitset(&preg->EP0_CONTROL, EP0_STL); - } else { - /* Clear STALL */ - _nbu2ss_bitclr(&preg->EP0_CONTROL, EP0_STL); - } - } else { - epnum = ep_adrs & USB_ENDPOINT_NUMBER_MASK; - num = epnum - 1; - ep = &udc->ep[epnum]; - - if (bstall) { - /* Set STALL */ - ep->halted = true; - - if (ep_adrs & USB_DIR_IN) - data = EPN_BCLR | EPN_ISTL; - else - data = EPN_OSTL_EN | EPN_OSTL; - - _nbu2ss_bitset(&preg->EP_REGS[num].EP_CONTROL, data); - } else { - if (ep_adrs & USB_DIR_IN) { - _nbu2ss_bitclr(&preg->EP_REGS[num].EP_CONTROL - , EPN_ISTL); - } else { - data = - _nbu2ss_readl(&preg->EP_REGS[num].EP_CONTROL); - - data &= ~EPN_OSTL; - data |= EPN_OSTL_EN; - - _nbu2ss_writel(&preg->EP_REGS[num].EP_CONTROL - , data); - } - - /* Clear STALL */ - ep->stalled = false; - if (ep->halted) { - ep->halted = false; - _nbu2ss_restert_transfer(ep); - } - } - } -} - -/*-------------------------------------------------------------------------*/ -static void _nbu2ss_set_test_mode(struct nbu2ss_udc *udc, u32 mode) -{ - u32 data; - - if (mode > MAX_TEST_MODE_NUM) - return; - - dev_info(udc->dev, "SET FEATURE : test mode = %d\n", mode); - - data = _nbu2ss_readl(&udc->p_regs->USB_CONTROL); - data &= ~TEST_FORCE_ENABLE; - data |= mode << TEST_MODE_SHIFT; - - _nbu2ss_writel(&udc->p_regs->USB_CONTROL, data); - _nbu2ss_bitset(&udc->p_regs->TEST_CONTROL, CS_TESTMODEEN); -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_set_feature_device(struct nbu2ss_udc *udc, - u16 selector, u16 wIndex) -{ - int result = -EOPNOTSUPP; - - switch (selector) { - case USB_DEVICE_REMOTE_WAKEUP: - if (wIndex == 0x0000) { - udc->remote_wakeup = U2F_ENABLE; - result = 0; - } - break; - - case USB_DEVICE_TEST_MODE: - wIndex >>= 8; - if (wIndex <= MAX_TEST_MODE_NUM) - result = 0; - break; - - default: - break; - } - - return result; -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_get_ep_stall(struct nbu2ss_udc *udc, u8 ep_adrs) -{ - u8 epnum; - u32 data = 0, bit_data; - struct fc_regs __iomem *preg = udc->p_regs; - - epnum = ep_adrs & ~USB_ENDPOINT_DIR_MASK; - if (epnum == 0) { - data = _nbu2ss_readl(&preg->EP0_CONTROL); - bit_data = EP0_STL; - - } else { - data = _nbu2ss_readl(&preg->EP_REGS[epnum - 1].EP_CONTROL); - if ((data & EPN_EN) == 0) - return -1; - - if (ep_adrs & USB_ENDPOINT_DIR_MASK) - bit_data = EPN_ISTL; - else - bit_data = EPN_OSTL; - } - - if ((data & bit_data) == 0) - return 0; - return 1; -} - -/*-------------------------------------------------------------------------*/ -static inline int _nbu2ss_req_feature(struct nbu2ss_udc *udc, bool bset) -{ - u8 recipient = (u8)(udc->ctrl.bRequestType & USB_RECIP_MASK); - u8 direction = (u8)(udc->ctrl.bRequestType & USB_DIR_IN); - u16 selector = le16_to_cpu(udc->ctrl.wValue); - u16 wIndex = le16_to_cpu(udc->ctrl.wIndex); - u8 ep_adrs; - int result = -EOPNOTSUPP; - - if ((udc->ctrl.wLength != 0x0000) || - (direction != USB_DIR_OUT)) { - return -EINVAL; - } - - switch (recipient) { - case USB_RECIP_DEVICE: - if (bset) - result = - _nbu2ss_set_feature_device(udc, selector, wIndex); - break; - - case USB_RECIP_ENDPOINT: - if (0x0000 == (wIndex & 0xFF70)) { - if (selector == USB_ENDPOINT_HALT) { - ep_adrs = wIndex & 0xFF; - if (!bset) { - _nbu2ss_endpoint_toggle_reset(udc, - ep_adrs); - } - - _nbu2ss_set_endpoint_stall(udc, ep_adrs, bset); - - result = 0; - } - } - break; - - default: - break; - } - - if (result >= 0) - _nbu2ss_create_ep0_packet(udc, udc->ep0_buf, 0); - - return result; -} - -/*-------------------------------------------------------------------------*/ -static inline enum usb_device_speed _nbu2ss_get_speed(struct nbu2ss_udc *udc) -{ - u32 data; - enum usb_device_speed speed = USB_SPEED_FULL; - - data = _nbu2ss_readl(&udc->p_regs->USB_STATUS); - if (data & HIGH_SPEED) - speed = USB_SPEED_HIGH; - - return speed; -} - -/*-------------------------------------------------------------------------*/ -static void _nbu2ss_epn_set_stall(struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep) -{ - u8 ep_adrs; - u32 regdata; - int limit_cnt = 0; - - struct fc_regs __iomem *preg = udc->p_regs; - - if (ep->direct == USB_DIR_IN) { - for (limit_cnt = 0 - ; limit_cnt < IN_DATA_EMPTY_COUNT - ; limit_cnt++) { - regdata = _nbu2ss_readl(&preg->EP_REGS[ep->epnum - 1].EP_STATUS); - - if ((regdata & EPN_IN_DATA) == 0) - break; - - mdelay(1); - } - } - - ep_adrs = ep->epnum | ep->direct; - _nbu2ss_set_endpoint_stall(udc, ep_adrs, 1); -} - -/*-------------------------------------------------------------------------*/ -static int std_req_get_status(struct nbu2ss_udc *udc) -{ - u32 length; - u16 status_data = 0; - u8 recipient = (u8)(udc->ctrl.bRequestType & USB_RECIP_MASK); - u8 direction = (u8)(udc->ctrl.bRequestType & USB_DIR_IN); - u8 ep_adrs; - int result = -EINVAL; - - if ((udc->ctrl.wValue != 0x0000) || (direction != USB_DIR_IN)) - return result; - - length = - min_t(u16, le16_to_cpu(udc->ctrl.wLength), sizeof(status_data)); - switch (recipient) { - case USB_RECIP_DEVICE: - if (udc->ctrl.wIndex == 0x0000) { - if (udc->gadget.is_selfpowered) - status_data |= BIT(USB_DEVICE_SELF_POWERED); - - if (udc->remote_wakeup) - status_data |= BIT(USB_DEVICE_REMOTE_WAKEUP); - - result = 0; - } - break; - - case USB_RECIP_ENDPOINT: - if (0x0000 == (le16_to_cpu(udc->ctrl.wIndex) & 0xFF70)) { - ep_adrs = (u8)(le16_to_cpu(udc->ctrl.wIndex) & 0xFF); - result = _nbu2ss_get_ep_stall(udc, ep_adrs); - - if (result > 0) - status_data |= BIT(USB_ENDPOINT_HALT); - } - break; - - default: - break; - } - - if (result >= 0) { - memcpy(udc->ep0_buf, &status_data, length); - _nbu2ss_create_ep0_packet(udc, udc->ep0_buf, length); - _nbu2ss_ep0_in_transfer(udc, &udc->ep0_req); - - } else { - dev_err(udc->dev, " Error GET_STATUS\n"); - } - - return result; -} - -/*-------------------------------------------------------------------------*/ -static int std_req_clear_feature(struct nbu2ss_udc *udc) -{ - return _nbu2ss_req_feature(udc, false); -} - -/*-------------------------------------------------------------------------*/ -static int std_req_set_feature(struct nbu2ss_udc *udc) -{ - return _nbu2ss_req_feature(udc, true); -} - -/*-------------------------------------------------------------------------*/ -static int std_req_set_address(struct nbu2ss_udc *udc) -{ - int result = 0; - u32 wValue = le16_to_cpu(udc->ctrl.wValue); - - if ((udc->ctrl.bRequestType != 0x00) || - (udc->ctrl.wIndex != 0x0000) || - (udc->ctrl.wLength != 0x0000)) { - return -EINVAL; - } - - if (wValue != (wValue & 0x007F)) - return -EINVAL; - - wValue <<= USB_ADRS_SHIFT; - - _nbu2ss_writel(&udc->p_regs->USB_ADDRESS, wValue); - _nbu2ss_create_ep0_packet(udc, udc->ep0_buf, 0); - - return result; -} - -/*-------------------------------------------------------------------------*/ -static int std_req_set_configuration(struct nbu2ss_udc *udc) -{ - u32 config_value = (u32)(le16_to_cpu(udc->ctrl.wValue) & 0x00ff); - - if ((udc->ctrl.wIndex != 0x0000) || - (udc->ctrl.wLength != 0x0000) || - (udc->ctrl.bRequestType != 0x00)) { - return -EINVAL; - } - - udc->curr_config = config_value; - - if (config_value > 0) { - _nbu2ss_bitset(&udc->p_regs->USB_CONTROL, CONF); - udc->devstate = USB_STATE_CONFIGURED; - - } else { - _nbu2ss_bitclr(&udc->p_regs->USB_CONTROL, CONF); - udc->devstate = USB_STATE_ADDRESS; - } - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_read_request_data(struct nbu2ss_udc *udc, u32 *pdata) -{ - *pdata = _nbu2ss_readl(&udc->p_regs->SETUP_DATA0); - pdata++; - *pdata = _nbu2ss_readl(&udc->p_regs->SETUP_DATA1); -} - -/*-------------------------------------------------------------------------*/ -static inline int _nbu2ss_decode_request(struct nbu2ss_udc *udc) -{ - bool bcall_back = true; - int nret = -EINVAL; - struct usb_ctrlrequest *p_ctrl; - - p_ctrl = &udc->ctrl; - _nbu2ss_read_request_data(udc, (u32 *)p_ctrl); - - /* ep0 state control */ - if (p_ctrl->wLength == 0) { - udc->ep0state = EP0_IN_STATUS_PHASE; - - } else { - if (p_ctrl->bRequestType & USB_DIR_IN) - udc->ep0state = EP0_IN_DATA_PHASE; - else - udc->ep0state = EP0_OUT_DATA_PHASE; - } - - if ((p_ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { - switch (p_ctrl->bRequest) { - case USB_REQ_GET_STATUS: - nret = std_req_get_status(udc); - bcall_back = false; - break; - - case USB_REQ_CLEAR_FEATURE: - nret = std_req_clear_feature(udc); - bcall_back = false; - break; - - case USB_REQ_SET_FEATURE: - nret = std_req_set_feature(udc); - bcall_back = false; - break; - - case USB_REQ_SET_ADDRESS: - nret = std_req_set_address(udc); - bcall_back = false; - break; - - case USB_REQ_SET_CONFIGURATION: - nret = std_req_set_configuration(udc); - break; - - default: - break; - } - } - - if (!bcall_back) { - if (udc->ep0state == EP0_IN_STATUS_PHASE) { - if (nret >= 0) { - /*--------------------------------------*/ - /* Status Stage */ - nret = EP0_send_NULL(udc, true); - } - } - - } else { - spin_unlock(&udc->lock); - nret = udc->driver->setup(&udc->gadget, &udc->ctrl); - spin_lock(&udc->lock); - } - - if (nret < 0) - udc->ep0state = EP0_IDLE; - - return nret; -} - -/*-------------------------------------------------------------------------*/ -static inline int _nbu2ss_ep0_in_data_stage(struct nbu2ss_udc *udc) -{ - int nret; - struct nbu2ss_req *req; - struct nbu2ss_ep *ep = &udc->ep[0]; - - req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue); - if (!req) - req = &udc->ep0_req; - - req->req.actual += req->div_len; - req->div_len = 0; - - nret = _nbu2ss_ep0_in_transfer(udc, req); - if (nret == 0) { - udc->ep0state = EP0_OUT_STATUS_PAHSE; - EP0_receive_NULL(udc, true); - } - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static inline int _nbu2ss_ep0_out_data_stage(struct nbu2ss_udc *udc) -{ - int nret; - struct nbu2ss_req *req; - struct nbu2ss_ep *ep = &udc->ep[0]; - - req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue); - if (!req) - req = &udc->ep0_req; - - nret = _nbu2ss_ep0_out_transfer(udc, req); - if (nret == 0) { - udc->ep0state = EP0_IN_STATUS_PHASE; - EP0_send_NULL(udc, true); - - } else if (nret < 0) { - _nbu2ss_bitset(&udc->p_regs->EP0_CONTROL, EP0_BCLR); - req->req.status = nret; - } - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static inline int _nbu2ss_ep0_status_stage(struct nbu2ss_udc *udc) -{ - struct nbu2ss_req *req; - struct nbu2ss_ep *ep = &udc->ep[0]; - - req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue); - if (!req) { - req = &udc->ep0_req; - if (req->req.complete) - req->req.complete(&ep->ep, &req->req); - - } else { - if (req->req.complete) - _nbu2ss_ep_done(ep, req, 0); - } - - udc->ep0state = EP0_IDLE; - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_ep0_int(struct nbu2ss_udc *udc) -{ - int i; - u32 status; - u32 intr; - int nret = -1; - - status = _nbu2ss_readl(&udc->p_regs->EP0_STATUS); - intr = status & EP0_STATUS_RW_BIT; - _nbu2ss_writel(&udc->p_regs->EP0_STATUS, ~intr); - - status &= (SETUP_INT | EP0_IN_INT | EP0_OUT_INT - | STG_END_INT | EP0_OUT_NULL_INT); - - if (status == 0) { - dev_info(udc->dev, "%s Not Decode Interrupt\n", __func__); - dev_info(udc->dev, "EP0_STATUS = 0x%08x\n", intr); - return; - } - - if (udc->gadget.speed == USB_SPEED_UNKNOWN) - udc->gadget.speed = _nbu2ss_get_speed(udc); - - for (i = 0; i < EP0_END_XFER; i++) { - switch (udc->ep0state) { - case EP0_IDLE: - if (status & SETUP_INT) { - status = 0; - nret = _nbu2ss_decode_request(udc); - } - break; - - case EP0_IN_DATA_PHASE: - if (status & EP0_IN_INT) { - status &= ~EP0_IN_INT; - nret = _nbu2ss_ep0_in_data_stage(udc); - } - break; - - case EP0_OUT_DATA_PHASE: - if (status & EP0_OUT_INT) { - status &= ~EP0_OUT_INT; - nret = _nbu2ss_ep0_out_data_stage(udc); - } - break; - - case EP0_IN_STATUS_PHASE: - if ((status & STG_END_INT) || (status & SETUP_INT)) { - status &= ~(STG_END_INT | EP0_IN_INT); - nret = _nbu2ss_ep0_status_stage(udc); - } - break; - - case EP0_OUT_STATUS_PAHSE: - if ((status & STG_END_INT) || (status & SETUP_INT) || - (status & EP0_OUT_NULL_INT)) { - status &= ~(STG_END_INT - | EP0_OUT_INT - | EP0_OUT_NULL_INT); - - nret = _nbu2ss_ep0_status_stage(udc); - } - - break; - - default: - status = 0; - break; - } - - if (status == 0) - break; - } - - if (nret < 0) { - /* Send Stall */ - _nbu2ss_set_endpoint_stall(udc, 0, true); - } -} - -/*-------------------------------------------------------------------------*/ -static void _nbu2ss_ep_done(struct nbu2ss_ep *ep, - struct nbu2ss_req *req, - int status) -{ - struct nbu2ss_udc *udc = ep->udc; - - list_del_init(&req->queue); - - if (status == -ECONNRESET) - _nbu2ss_fifo_flush(udc, ep); - - if (likely(req->req.status == -EINPROGRESS)) - req->req.status = status; - - if (ep->stalled) { - _nbu2ss_epn_set_stall(udc, ep); - } else { - if (!list_empty(&ep->queue)) - _nbu2ss_restert_transfer(ep); - } - -#ifdef USE_DMA - if ((ep->direct == USB_DIR_OUT) && (ep->epnum > 0) && - (req->req.dma != 0)) - _nbu2ss_dma_unmap_single(udc, ep, req, USB_DIR_OUT); -#endif - - spin_unlock(&udc->lock); - req->req.complete(&ep->ep, &req->req); - spin_lock(&udc->lock); -} - -/*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_epn_in_int(struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req) -{ - int result = 0; - u32 status; - - struct fc_regs __iomem *preg = udc->p_regs; - - if (req->dma_flag) - return; /* DMA is forwarded */ - - req->req.actual += req->div_len; - req->div_len = 0; - - if (req->req.actual != req->req.length) { - /*---------------------------------------------------------*/ - /* remainder of data */ - result = _nbu2ss_epn_in_transfer(udc, ep, req); - - } else { - if (req->zero && ((req->req.actual % ep->ep.maxpacket) == 0)) { - status = - _nbu2ss_readl(&preg->EP_REGS[ep->epnum - 1].EP_STATUS); - - if ((status & EPN_IN_FULL) == 0) { - /*-----------------------------------------*/ - /* 0 Length Packet */ - req->zero = false; - _nbu2ss_zero_len_pkt(udc, ep->epnum); - } - return; - } - } - - if (result <= 0) { - /*---------------------------------------------------------*/ - /* Complete */ - _nbu2ss_ep_done(ep, req, result); - } -} - -/*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_epn_out_int(struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req) -{ - int result; - - result = _nbu2ss_epn_out_transfer(udc, ep, req); - if (result <= 0) - _nbu2ss_ep_done(ep, req, result); -} - -/*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_epn_in_dma_int(struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req) -{ - u32 mpkt; - u32 size; - struct usb_request *preq; - - preq = &req->req; - - if (!req->dma_flag) - return; - - preq->actual += req->div_len; - req->div_len = 0; - req->dma_flag = false; - -#ifdef USE_DMA - _nbu2ss_dma_unmap_single(udc, ep, req, USB_DIR_IN); -#endif - - if (preq->actual != preq->length) { - _nbu2ss_epn_in_transfer(udc, ep, req); - } else { - mpkt = ep->ep.maxpacket; - size = preq->actual % mpkt; - if (size > 0) { - if (((preq->actual & 0x03) == 0) && (size < mpkt)) - _nbu2ss_ep_in_end(udc, ep->epnum, 0, 0); - } else { - _nbu2ss_epn_in_int(udc, ep, req); - } - } -} - -/*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_epn_out_dma_int(struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req) -{ - int i; - u32 num; - u32 dmacnt, ep_dmacnt; - u32 mpkt; - struct fc_regs __iomem *preg = udc->p_regs; - - num = ep->epnum - 1; - - if (req->req.actual == req->req.length) { - if ((req->req.length % ep->ep.maxpacket) && !req->zero) { - req->div_len = 0; - req->dma_flag = false; - _nbu2ss_ep_done(ep, req, 0); - return; - } - } - - ep_dmacnt = _nbu2ss_readl(&preg->EP_REGS[num].EP_LEN_DCNT) - & EPN_DMACNT; - ep_dmacnt >>= 16; - - for (i = 0; i < EPC_PLL_LOCK_COUNT; i++) { - dmacnt = _nbu2ss_readl(&preg->EP_DCR[num].EP_DCR1) - & DCR1_EPN_DMACNT; - dmacnt >>= 16; - if (ep_dmacnt == dmacnt) - break; - } - - _nbu2ss_bitclr(&preg->EP_DCR[num].EP_DCR1, DCR1_EPN_REQEN); - - if (dmacnt != 0) { - mpkt = ep->ep.maxpacket; - if ((req->div_len % mpkt) == 0) - req->div_len -= mpkt * dmacnt; - } - - if ((req->req.actual % ep->ep.maxpacket) > 0) { - if (req->req.actual == req->div_len) { - req->div_len = 0; - req->dma_flag = false; - _nbu2ss_ep_done(ep, req, 0); - return; - } - } - - req->req.actual += req->div_len; - req->div_len = 0; - req->dma_flag = false; - - _nbu2ss_epn_out_int(udc, ep, req); -} - -/*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_epn_int(struct nbu2ss_udc *udc, u32 epnum) -{ - u32 num; - u32 status; - - struct nbu2ss_req *req; - struct nbu2ss_ep *ep = &udc->ep[epnum]; - - num = epnum - 1; - - /* Interrupt Status */ - status = _nbu2ss_readl(&udc->p_regs->EP_REGS[num].EP_STATUS); - - /* Interrupt Clear */ - _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_STATUS, ~status); - - req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue); - if (!req) { - /* pr_warn("=== %s(%d) req == NULL\n", __func__, epnum); */ - return; - } - - if (status & EPN_OUT_END_INT) { - status &= ~EPN_OUT_INT; - _nbu2ss_epn_out_dma_int(udc, ep, req); - } - - if (status & EPN_OUT_INT) - _nbu2ss_epn_out_int(udc, ep, req); - - if (status & EPN_IN_END_INT) { - status &= ~EPN_IN_INT; - _nbu2ss_epn_in_dma_int(udc, ep, req); - } - - if (status & EPN_IN_INT) - _nbu2ss_epn_in_int(udc, ep, req); -} - -/*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_ep_int(struct nbu2ss_udc *udc, u32 epnum) -{ - if (epnum == 0) - _nbu2ss_ep0_int(udc); - else - _nbu2ss_epn_int(udc, epnum); -} - -/*-------------------------------------------------------------------------*/ -static void _nbu2ss_ep0_enable(struct nbu2ss_udc *udc) -{ - _nbu2ss_bitset(&udc->p_regs->EP0_CONTROL, (EP0_AUTO | EP0_BCLR)); - _nbu2ss_writel(&udc->p_regs->EP0_INT_ENA, EP0_INT_EN_BIT); -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_nuke(struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - int status) -{ - struct nbu2ss_req *req, *n; - - /* Endpoint Disable */ - _nbu2ss_epn_exit(udc, ep); - - /* DMA Disable */ - _nbu2ss_ep_dma_exit(udc, ep); - - if (list_empty(&ep->queue)) - return 0; - - /* called with irqs blocked */ - list_for_each_entry_safe(req, n, &ep->queue, queue) { - _nbu2ss_ep_done(ep, req, status); - } - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static void _nbu2ss_quiesce(struct nbu2ss_udc *udc) -{ - struct nbu2ss_ep *ep; - - udc->gadget.speed = USB_SPEED_UNKNOWN; - - _nbu2ss_nuke(udc, &udc->ep[0], -ESHUTDOWN); - - /* Endpoint n */ - list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { - _nbu2ss_nuke(udc, ep, -ESHUTDOWN); - } -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_pullup(struct nbu2ss_udc *udc, int is_on) -{ - u32 reg_dt; - - if (udc->vbus_active == 0) - return -ESHUTDOWN; - - if (is_on) { - /* D+ Pullup */ - if (udc->driver) { - reg_dt = (_nbu2ss_readl(&udc->p_regs->USB_CONTROL) - | PUE2) & ~(u32)CONNECTB; - - _nbu2ss_writel(&udc->p_regs->USB_CONTROL, reg_dt); - } - - } else { - /* D+ Pulldown */ - reg_dt = (_nbu2ss_readl(&udc->p_regs->USB_CONTROL) | CONNECTB) - & ~(u32)PUE2; - - _nbu2ss_writel(&udc->p_regs->USB_CONTROL, reg_dt); - udc->gadget.speed = USB_SPEED_UNKNOWN; - } - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static void _nbu2ss_fifo_flush(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) -{ - struct fc_regs __iomem *p = udc->p_regs; - - if (udc->vbus_active == 0) - return; - - if (ep->epnum == 0) { - /* EP0 */ - _nbu2ss_bitset(&p->EP0_CONTROL, EP0_BCLR); - - } else { - /* EPN */ - _nbu2ss_ep_dma_abort(udc, ep); - _nbu2ss_bitset(&p->EP_REGS[ep->epnum - 1].EP_CONTROL, EPN_BCLR); - } -} - -/*-------------------------------------------------------------------------*/ -static int _nbu2ss_enable_controller(struct nbu2ss_udc *udc) -{ - int waitcnt = 0; - - if (udc->udc_enabled) - return 0; - - /* Reset */ - _nbu2ss_bitset(&udc->p_regs->EPCTR, (DIRPD | EPC_RST)); - udelay(EPC_RST_DISABLE_TIME); /* 1us wait */ - - _nbu2ss_bitclr(&udc->p_regs->EPCTR, DIRPD); - mdelay(EPC_DIRPD_DISABLE_TIME); /* 1ms wait */ - - _nbu2ss_bitclr(&udc->p_regs->EPCTR, EPC_RST); - - _nbu2ss_writel(&udc->p_regs->AHBSCTR, WAIT_MODE); - - _nbu2ss_writel(&udc->p_regs->AHBMCTR, - HBUSREQ_MODE | HTRANS_MODE | WBURST_TYPE); - - while (!(_nbu2ss_readl(&udc->p_regs->EPCTR) & PLL_LOCK)) { - waitcnt++; - udelay(1); /* 1us wait */ - if (waitcnt == EPC_PLL_LOCK_COUNT) { - dev_err(udc->dev, "*** Reset Cancel failed\n"); - return -EINVAL; - } - } - - _nbu2ss_bitset(&udc->p_regs->UTMI_CHARACTER_1, USB_SQUSET); - - _nbu2ss_bitset(&udc->p_regs->USB_CONTROL, (INT_SEL | SOF_RCV)); - - /* EP0 */ - _nbu2ss_ep0_enable(udc); - - /* USB Interrupt Enable */ - _nbu2ss_bitset(&udc->p_regs->USB_INT_ENA, USB_INT_EN_BIT); - - udc->udc_enabled = true; - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static void _nbu2ss_reset_controller(struct nbu2ss_udc *udc) -{ - _nbu2ss_bitset(&udc->p_regs->EPCTR, EPC_RST); - _nbu2ss_bitclr(&udc->p_regs->EPCTR, EPC_RST); -} - -/*-------------------------------------------------------------------------*/ -static void _nbu2ss_disable_controller(struct nbu2ss_udc *udc) -{ - if (udc->udc_enabled) { - udc->udc_enabled = false; - _nbu2ss_reset_controller(udc); - _nbu2ss_bitset(&udc->p_regs->EPCTR, (DIRPD | EPC_RST)); - } -} - -/*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_check_vbus(struct nbu2ss_udc *udc) -{ - int nret; - u32 reg_dt; - - /* chattering */ - mdelay(VBUS_CHATTERING_MDELAY); /* wait (ms) */ - - /* VBUS ON Check*/ - reg_dt = gpiod_get_value(vbus_gpio); - if (reg_dt == 0) { - udc->linux_suspended = 0; - - _nbu2ss_reset_controller(udc); - dev_info(udc->dev, " ----- VBUS OFF\n"); - - if (udc->vbus_active == 1) { - /* VBUS OFF */ - udc->vbus_active = 0; - if (udc->usb_suspended) { - udc->usb_suspended = 0; - /* _nbu2ss_reset_controller(udc); */ - } - udc->devstate = USB_STATE_NOTATTACHED; - - _nbu2ss_quiesce(udc); - if (udc->driver) { - spin_unlock(&udc->lock); - udc->driver->disconnect(&udc->gadget); - spin_lock(&udc->lock); - } - - _nbu2ss_disable_controller(udc); - } - } else { - mdelay(5); /* wait (5ms) */ - reg_dt = gpiod_get_value(vbus_gpio); - if (reg_dt == 0) - return; - - dev_info(udc->dev, " ----- VBUS ON\n"); - - if (udc->linux_suspended) - return; - - if (udc->vbus_active == 0) { - /* VBUS ON */ - udc->vbus_active = 1; - udc->devstate = USB_STATE_POWERED; - - nret = _nbu2ss_enable_controller(udc); - if (nret < 0) { - _nbu2ss_disable_controller(udc); - udc->vbus_active = 0; - return; - } - - _nbu2ss_pullup(udc, 1); - -#ifdef UDC_DEBUG_DUMP - _nbu2ss_dump_register(udc); -#endif /* UDC_DEBUG_DUMP */ - - } else { - if (udc->devstate == USB_STATE_POWERED) - _nbu2ss_pullup(udc, 1); - } - } -} - -/*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_int_bus_reset(struct nbu2ss_udc *udc) -{ - udc->devstate = USB_STATE_DEFAULT; - udc->remote_wakeup = 0; - - _nbu2ss_quiesce(udc); - - udc->ep0state = EP0_IDLE; -} - -/*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_int_usb_resume(struct nbu2ss_udc *udc) -{ - if (udc->usb_suspended == 1) { - udc->usb_suspended = 0; - if (udc->driver && udc->driver->resume) { - spin_unlock(&udc->lock); - udc->driver->resume(&udc->gadget); - spin_lock(&udc->lock); - } - } -} - -/*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_int_usb_suspend(struct nbu2ss_udc *udc) -{ - u32 reg_dt; - - if (udc->usb_suspended == 0) { - reg_dt = gpiod_get_value(vbus_gpio); - - if (reg_dt == 0) - return; - - udc->usb_suspended = 1; - if (udc->driver && udc->driver->suspend) { - spin_unlock(&udc->lock); - udc->driver->suspend(&udc->gadget); - spin_lock(&udc->lock); - } - - _nbu2ss_bitset(&udc->p_regs->USB_CONTROL, SUSPEND); - } -} - -/*-------------------------------------------------------------------------*/ -/* VBUS (GPIO153) Interrupt */ -static irqreturn_t _nbu2ss_vbus_irq(int irq, void *_udc) -{ - struct nbu2ss_udc *udc = (struct nbu2ss_udc *)_udc; - - spin_lock(&udc->lock); - _nbu2ss_check_vbus(udc); - spin_unlock(&udc->lock); - - return IRQ_HANDLED; -} - -/*-------------------------------------------------------------------------*/ -/* Interrupt (udc) */ -static irqreturn_t _nbu2ss_udc_irq(int irq, void *_udc) -{ - u8 suspend_flag = 0; - u32 status; - u32 epnum, int_bit; - - struct nbu2ss_udc *udc = (struct nbu2ss_udc *)_udc; - struct fc_regs __iomem *preg = udc->p_regs; - - if (gpiod_get_value(vbus_gpio) == 0) { - _nbu2ss_writel(&preg->USB_INT_STA, ~USB_INT_STA_RW); - _nbu2ss_writel(&preg->USB_INT_ENA, 0); - return IRQ_HANDLED; - } - - spin_lock(&udc->lock); - - for (;;) { - if (gpiod_get_value(vbus_gpio) == 0) { - _nbu2ss_writel(&preg->USB_INT_STA, ~USB_INT_STA_RW); - _nbu2ss_writel(&preg->USB_INT_ENA, 0); - status = 0; - } else { - status = _nbu2ss_readl(&preg->USB_INT_STA); - } - - if (status == 0) - break; - - _nbu2ss_writel(&preg->USB_INT_STA, ~(status & USB_INT_STA_RW)); - - if (status & USB_RST_INT) { - /* USB Reset */ - _nbu2ss_int_bus_reset(udc); - } - - if (status & RSUM_INT) { - /* Resume */ - _nbu2ss_int_usb_resume(udc); - } - - if (status & SPND_INT) { - /* Suspend */ - suspend_flag = 1; - } - - if (status & EPN_INT) { - /* EP INT */ - int_bit = status >> 8; - - for (epnum = 0; epnum < NUM_ENDPOINTS; epnum++) { - if (0x01 & int_bit) - _nbu2ss_ep_int(udc, epnum); - - int_bit >>= 1; - - if (int_bit == 0) - break; - } - } - } - - if (suspend_flag) - _nbu2ss_int_usb_suspend(udc); - - spin_unlock(&udc->lock); - - return IRQ_HANDLED; -} - -/*-------------------------------------------------------------------------*/ -/* usb_ep_ops */ -static int nbu2ss_ep_enable(struct usb_ep *_ep, - const struct usb_endpoint_descriptor *desc) -{ - u8 ep_type; - unsigned long flags; - - struct nbu2ss_ep *ep; - struct nbu2ss_udc *udc; - - if (!_ep || !desc) { - pr_err(" *** %s, bad param\n", __func__); - return -EINVAL; - } - - ep = container_of(_ep, struct nbu2ss_ep, ep); - if (!ep->udc) { - pr_err(" *** %s, ep == NULL !!\n", __func__); - return -EINVAL; - } - - ep_type = usb_endpoint_type(desc); - if ((ep_type == USB_ENDPOINT_XFER_CONTROL) || - (ep_type == USB_ENDPOINT_XFER_ISOC)) { - pr_err(" *** %s, bat bmAttributes\n", __func__); - return -EINVAL; - } - - udc = ep->udc; - if (udc->vbus_active == 0) - return -ESHUTDOWN; - - if ((!udc->driver) || (udc->gadget.speed == USB_SPEED_UNKNOWN)) { - dev_err(ep->udc->dev, " *** %s, udc !!\n", __func__); - return -ESHUTDOWN; - } - - spin_lock_irqsave(&udc->lock, flags); - - ep->desc = desc; - ep->epnum = usb_endpoint_num(desc); - ep->direct = desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK; - ep->ep_type = ep_type; - ep->wedged = 0; - ep->halted = false; - ep->stalled = false; - - ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize); - - /* DMA setting */ - _nbu2ss_ep_dma_init(udc, ep); - - /* Endpoint setting */ - _nbu2ss_ep_init(udc, ep); - - spin_unlock_irqrestore(&udc->lock, flags); - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static int nbu2ss_ep_disable(struct usb_ep *_ep) -{ - struct nbu2ss_ep *ep; - struct nbu2ss_udc *udc; - unsigned long flags; - - if (!_ep) { - pr_err(" *** %s, bad param\n", __func__); - return -EINVAL; - } - - ep = container_of(_ep, struct nbu2ss_ep, ep); - if (!ep->udc) { - pr_err("udc: *** %s, ep == NULL !!\n", __func__); - return -EINVAL; - } - - udc = ep->udc; - if (udc->vbus_active == 0) - return -ESHUTDOWN; - - spin_lock_irqsave(&udc->lock, flags); - _nbu2ss_nuke(udc, ep, -EINPROGRESS); /* dequeue request */ - spin_unlock_irqrestore(&udc->lock, flags); - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static struct usb_request *nbu2ss_ep_alloc_request(struct usb_ep *ep, - gfp_t gfp_flags) -{ - struct nbu2ss_req *req; - - req = kzalloc(sizeof(*req), gfp_flags); - if (!req) - return NULL; - -#ifdef USE_DMA - req->req.dma = DMA_ADDR_INVALID; -#endif - INIT_LIST_HEAD(&req->queue); - - return &req->req; -} - -/*-------------------------------------------------------------------------*/ -static void nbu2ss_ep_free_request(struct usb_ep *_ep, - struct usb_request *_req) -{ - struct nbu2ss_req *req; - - if (_req) { - req = container_of(_req, struct nbu2ss_req, req); - - kfree(req); - } -} - -/*-------------------------------------------------------------------------*/ -static int nbu2ss_ep_queue(struct usb_ep *_ep, - struct usb_request *_req, gfp_t gfp_flags) -{ - struct nbu2ss_req *req; - struct nbu2ss_ep *ep; - struct nbu2ss_udc *udc; - unsigned long flags; - bool bflag; - int result = -EINVAL; - - /* catch various bogus parameters */ - if (!_ep || !_req) { - if (!_ep) - pr_err("udc: %s --- _ep == NULL\n", __func__); - - if (!_req) - pr_err("udc: %s --- _req == NULL\n", __func__); - - return -EINVAL; - } - - req = container_of(_req, struct nbu2ss_req, req); - if (unlikely(!_req->complete || - !_req->buf || - !list_empty(&req->queue))) { - if (!_req->complete) - pr_err("udc: %s --- !_req->complete\n", __func__); - - if (!_req->buf) - pr_err("udc:%s --- !_req->buf\n", __func__); - - if (!list_empty(&req->queue)) - pr_err("%s --- !list_empty(&req->queue)\n", __func__); - - return -EINVAL; - } - - ep = container_of(_ep, struct nbu2ss_ep, ep); - udc = ep->udc; - - if (udc->vbus_active == 0) { - dev_info(udc->dev, "Can't ep_queue (VBUS OFF)\n"); - return -ESHUTDOWN; - } - - if (unlikely(!udc->driver)) { - dev_err(udc->dev, "%s, bogus device state %p\n", __func__, - udc->driver); - return -ESHUTDOWN; - } - - spin_lock_irqsave(&udc->lock, flags); - -#ifdef USE_DMA - if ((uintptr_t)req->req.buf & 0x3) - req->unaligned = true; - else - req->unaligned = false; - - if (req->unaligned) { - if (!ep->virt_buf) { - ep->virt_buf = dma_alloc_coherent(udc->dev, PAGE_SIZE, - &ep->phys_buf, - GFP_ATOMIC | GFP_DMA); - if (!ep->virt_buf) { - spin_unlock_irqrestore(&udc->lock, flags); - return -ENOMEM; - } - } - if (ep->epnum > 0) { - if (ep->direct == USB_DIR_IN) - memcpy(ep->virt_buf, req->req.buf, - req->req.length); - } - } - - if ((ep->epnum > 0) && (ep->direct == USB_DIR_OUT) && - (req->req.dma != 0)) - _nbu2ss_dma_map_single(udc, ep, req, USB_DIR_OUT); -#endif - - _req->status = -EINPROGRESS; - _req->actual = 0; - - bflag = list_empty(&ep->queue); - list_add_tail(&req->queue, &ep->queue); - - if (bflag && !ep->stalled) { - result = _nbu2ss_start_transfer(udc, ep, req, false); - if (result < 0) { - dev_err(udc->dev, " *** %s, result = %d\n", __func__, - result); - list_del(&req->queue); - } else if ((ep->epnum > 0) && (ep->direct == USB_DIR_OUT)) { -#ifdef USE_DMA - if (req->req.length < 4 && - req->req.length == req->req.actual) -#else - if (req->req.length == req->req.actual) -#endif - _nbu2ss_ep_done(ep, req, result); - } - } - - spin_unlock_irqrestore(&udc->lock, flags); - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static int nbu2ss_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) -{ - struct nbu2ss_req *req; - struct nbu2ss_ep *ep; - struct nbu2ss_udc *udc; - unsigned long flags; - - /* catch various bogus parameters */ - if (!_ep || !_req) { - /* pr_err("%s, bad param(1)\n", __func__); */ - return -EINVAL; - } - - ep = container_of(_ep, struct nbu2ss_ep, ep); - - udc = ep->udc; - if (!udc) - return -EINVAL; - - spin_lock_irqsave(&udc->lock, flags); - - /* make sure it's actually queued on this endpoint */ - list_for_each_entry(req, &ep->queue, queue) { - if (&req->req == _req) { - _nbu2ss_ep_done(ep, req, -ECONNRESET); - spin_unlock_irqrestore(&udc->lock, flags); - return 0; - } - } - - spin_unlock_irqrestore(&udc->lock, flags); - - pr_debug("%s no queue(EINVAL)\n", __func__); - - return -EINVAL; -} - -/*-------------------------------------------------------------------------*/ -static int nbu2ss_ep_set_halt(struct usb_ep *_ep, int value) -{ - u8 ep_adrs; - unsigned long flags; - - struct nbu2ss_ep *ep; - struct nbu2ss_udc *udc; - - if (!_ep) { - pr_err("%s, bad param\n", __func__); - return -EINVAL; - } - - ep = container_of(_ep, struct nbu2ss_ep, ep); - - udc = ep->udc; - if (!udc) { - dev_err(ep->udc->dev, " *** %s, bad udc\n", __func__); - return -EINVAL; - } - - spin_lock_irqsave(&udc->lock, flags); - - ep_adrs = ep->epnum | ep->direct; - if (value == 0) { - _nbu2ss_set_endpoint_stall(udc, ep_adrs, value); - ep->stalled = false; - } else { - if (list_empty(&ep->queue)) - _nbu2ss_epn_set_stall(udc, ep); - else - ep->stalled = true; - } - - if (value == 0) - ep->wedged = 0; - - spin_unlock_irqrestore(&udc->lock, flags); - - return 0; -} - -static int nbu2ss_ep_set_wedge(struct usb_ep *_ep) -{ - return nbu2ss_ep_set_halt(_ep, 1); -} - -/*-------------------------------------------------------------------------*/ -static int nbu2ss_ep_fifo_status(struct usb_ep *_ep) -{ - u32 data; - struct nbu2ss_ep *ep; - struct nbu2ss_udc *udc; - unsigned long flags; - struct fc_regs __iomem *preg; - - if (!_ep) { - pr_err("%s, bad param\n", __func__); - return -EINVAL; - } - - ep = container_of(_ep, struct nbu2ss_ep, ep); - - udc = ep->udc; - if (!udc) { - dev_err(ep->udc->dev, "%s, bad udc\n", __func__); - return -EINVAL; - } - - preg = udc->p_regs; - - data = gpiod_get_value(vbus_gpio); - if (data == 0) - return -EINVAL; - - spin_lock_irqsave(&udc->lock, flags); - - if (ep->epnum == 0) { - data = _nbu2ss_readl(&preg->EP0_LENGTH) & EP0_LDATA; - - } else { - data = _nbu2ss_readl(&preg->EP_REGS[ep->epnum - 1].EP_LEN_DCNT) - & EPN_LDATA; - } - - spin_unlock_irqrestore(&udc->lock, flags); - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static void nbu2ss_ep_fifo_flush(struct usb_ep *_ep) -{ - u32 data; - struct nbu2ss_ep *ep; - struct nbu2ss_udc *udc; - unsigned long flags; - - if (!_ep) { - pr_err("udc: %s, bad param\n", __func__); - return; - } - - ep = container_of(_ep, struct nbu2ss_ep, ep); - - udc = ep->udc; - if (!udc) { - dev_err(ep->udc->dev, "%s, bad udc\n", __func__); - return; - } - - data = gpiod_get_value(vbus_gpio); - if (data == 0) - return; - - spin_lock_irqsave(&udc->lock, flags); - _nbu2ss_fifo_flush(udc, ep); - spin_unlock_irqrestore(&udc->lock, flags); -} - -/*-------------------------------------------------------------------------*/ -static const struct usb_ep_ops nbu2ss_ep_ops = { - .enable = nbu2ss_ep_enable, - .disable = nbu2ss_ep_disable, - - .alloc_request = nbu2ss_ep_alloc_request, - .free_request = nbu2ss_ep_free_request, - - .queue = nbu2ss_ep_queue, - .dequeue = nbu2ss_ep_dequeue, - - .set_halt = nbu2ss_ep_set_halt, - .set_wedge = nbu2ss_ep_set_wedge, - - .fifo_status = nbu2ss_ep_fifo_status, - .fifo_flush = nbu2ss_ep_fifo_flush, -}; - -/*-------------------------------------------------------------------------*/ -/* usb_gadget_ops */ - -/*-------------------------------------------------------------------------*/ -static int nbu2ss_gad_get_frame(struct usb_gadget *pgadget) -{ - u32 data; - struct nbu2ss_udc *udc; - - if (!pgadget) { - pr_err("udc: %s, bad param\n", __func__); - return -EINVAL; - } - - udc = container_of(pgadget, struct nbu2ss_udc, gadget); - data = gpiod_get_value(vbus_gpio); - if (data == 0) - return -EINVAL; - - return _nbu2ss_readl(&udc->p_regs->USB_ADDRESS) & FRAME; -} - -/*-------------------------------------------------------------------------*/ -static int nbu2ss_gad_wakeup(struct usb_gadget *pgadget) -{ - int i; - u32 data; - - struct nbu2ss_udc *udc; - - if (!pgadget) { - pr_err("%s, bad param\n", __func__); - return -EINVAL; - } - - udc = container_of(pgadget, struct nbu2ss_udc, gadget); - - data = gpiod_get_value(vbus_gpio); - if (data == 0) { - dev_warn(&pgadget->dev, "VBUS LEVEL = %d\n", data); - return -EINVAL; - } - - _nbu2ss_bitset(&udc->p_regs->EPCTR, PLL_RESUME); - - for (i = 0; i < EPC_PLL_LOCK_COUNT; i++) { - data = _nbu2ss_readl(&udc->p_regs->EPCTR); - - if (data & PLL_LOCK) - break; - } - - _nbu2ss_bitclr(&udc->p_regs->EPCTR, PLL_RESUME); - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static int nbu2ss_gad_set_selfpowered(struct usb_gadget *pgadget, - int is_selfpowered) -{ - struct nbu2ss_udc *udc; - unsigned long flags; - - if (!pgadget) { - pr_err("%s, bad param\n", __func__); - return -EINVAL; - } - - udc = container_of(pgadget, struct nbu2ss_udc, gadget); - - spin_lock_irqsave(&udc->lock, flags); - pgadget->is_selfpowered = (is_selfpowered != 0); - spin_unlock_irqrestore(&udc->lock, flags); - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static int nbu2ss_gad_vbus_session(struct usb_gadget *pgadget, int is_active) -{ - return 0; -} - -/*-------------------------------------------------------------------------*/ -static int nbu2ss_gad_vbus_draw(struct usb_gadget *pgadget, unsigned int mA) -{ - struct nbu2ss_udc *udc; - unsigned long flags; - - if (!pgadget) { - pr_err("%s, bad param\n", __func__); - return -EINVAL; - } - - udc = container_of(pgadget, struct nbu2ss_udc, gadget); - - spin_lock_irqsave(&udc->lock, flags); - udc->mA = mA; - spin_unlock_irqrestore(&udc->lock, flags); - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static int nbu2ss_gad_pullup(struct usb_gadget *pgadget, int is_on) -{ - struct nbu2ss_udc *udc; - unsigned long flags; - - if (!pgadget) { - pr_err("%s, bad param\n", __func__); - return -EINVAL; - } - - udc = container_of(pgadget, struct nbu2ss_udc, gadget); - - if (!udc->driver) { - pr_warn("%s, Not Regist Driver\n", __func__); - return -EINVAL; - } - - if (udc->vbus_active == 0) - return -ESHUTDOWN; - - spin_lock_irqsave(&udc->lock, flags); - _nbu2ss_pullup(udc, is_on); - spin_unlock_irqrestore(&udc->lock, flags); - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static int nbu2ss_gad_ioctl(struct usb_gadget *pgadget, - unsigned int code, unsigned long param) -{ - return 0; -} - -static const struct usb_gadget_ops nbu2ss_gadget_ops = { - .get_frame = nbu2ss_gad_get_frame, - .wakeup = nbu2ss_gad_wakeup, - .set_selfpowered = nbu2ss_gad_set_selfpowered, - .vbus_session = nbu2ss_gad_vbus_session, - .vbus_draw = nbu2ss_gad_vbus_draw, - .pullup = nbu2ss_gad_pullup, - .ioctl = nbu2ss_gad_ioctl, -}; - -static const struct { - const char *name; - const struct usb_ep_caps caps; -} ep_info[NUM_ENDPOINTS] = { -#define EP_INFO(_name, _caps) \ - { \ - .name = _name, \ - .caps = _caps, \ - } - - EP_INFO("ep0", - USB_EP_CAPS(USB_EP_CAPS_TYPE_CONTROL, USB_EP_CAPS_DIR_ALL)), - EP_INFO("ep1-bulk", - USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)), - EP_INFO("ep2-bulk", - USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)), - EP_INFO("ep3in-int", - USB_EP_CAPS(USB_EP_CAPS_TYPE_INT, USB_EP_CAPS_DIR_IN)), - EP_INFO("ep4-iso", - USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_ALL)), - EP_INFO("ep5-iso", - USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_ALL)), - EP_INFO("ep6-bulk", - USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)), - EP_INFO("ep7-bulk", - USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)), - EP_INFO("ep8in-int", - USB_EP_CAPS(USB_EP_CAPS_TYPE_INT, USB_EP_CAPS_DIR_IN)), - EP_INFO("ep9-iso", - USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_ALL)), - EP_INFO("epa-iso", - USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_ALL)), - EP_INFO("epb-bulk", - USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)), - EP_INFO("epc-bulk", - USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)), - EP_INFO("epdin-int", - USB_EP_CAPS(USB_EP_CAPS_TYPE_INT, USB_EP_CAPS_DIR_IN)), - -#undef EP_INFO -}; - -/*-------------------------------------------------------------------------*/ -static void nbu2ss_drv_ep_init(struct nbu2ss_udc *udc) -{ - int i; - - INIT_LIST_HEAD(&udc->gadget.ep_list); - udc->gadget.ep0 = &udc->ep[0].ep; - - for (i = 0; i < NUM_ENDPOINTS; i++) { - struct nbu2ss_ep *ep = &udc->ep[i]; - - ep->udc = udc; - ep->desc = NULL; - - ep->ep.driver_data = NULL; - ep->ep.name = ep_info[i].name; - ep->ep.caps = ep_info[i].caps; - ep->ep.ops = &nbu2ss_ep_ops; - - usb_ep_set_maxpacket_limit(&ep->ep, - i == 0 ? EP0_PACKETSIZE - : EP_PACKETSIZE); - - list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); - INIT_LIST_HEAD(&ep->queue); - } - - list_del_init(&udc->ep[0].ep.ep_list); -} - -/*-------------------------------------------------------------------------*/ -/* platform_driver */ -static int nbu2ss_drv_contest_init(struct platform_device *pdev, - struct nbu2ss_udc *udc) -{ - spin_lock_init(&udc->lock); - udc->dev = &pdev->dev; - - udc->gadget.is_selfpowered = 1; - udc->devstate = USB_STATE_NOTATTACHED; - udc->pdev = pdev; - udc->mA = 0; - - udc->pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); - - /* init Endpoint */ - nbu2ss_drv_ep_init(udc); - - /* init Gadget */ - udc->gadget.ops = &nbu2ss_gadget_ops; - udc->gadget.ep0 = &udc->ep[0].ep; - udc->gadget.speed = USB_SPEED_UNKNOWN; - udc->gadget.name = driver_name; - /* udc->gadget.is_dualspeed = 1; */ - - device_initialize(&udc->gadget.dev); - - dev_set_name(&udc->gadget.dev, "gadget"); - udc->gadget.dev.parent = &pdev->dev; - udc->gadget.dev.dma_mask = pdev->dev.dma_mask; - - return 0; -} - -/* - * probe - binds to the platform device - */ -static int nbu2ss_drv_probe(struct platform_device *pdev) -{ - int status; - struct nbu2ss_udc *udc; - int irq; - void __iomem *mmio_base; - - udc = &udc_controller; - memset(udc, 0, sizeof(struct nbu2ss_udc)); - - platform_set_drvdata(pdev, udc); - - /* require I/O memory and IRQ to be provided as resources */ - mmio_base = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(mmio_base)) - return PTR_ERR(mmio_base); - - irq = platform_get_irq(pdev, 0); - if (irq < 0) - return irq; - status = devm_request_irq(&pdev->dev, irq, _nbu2ss_udc_irq, - 0, driver_name, udc); - - /* IO Memory */ - udc->p_regs = (struct fc_regs __iomem *)mmio_base; - - /* USB Function Controller Interrupt */ - if (status != 0) { - dev_err(udc->dev, "request_irq(USB_UDC_IRQ_1) failed\n"); - return status; - } - - /* Driver Initialization */ - status = nbu2ss_drv_contest_init(pdev, udc); - if (status < 0) { - /* Error */ - return status; - } - - /* VBUS Interrupt */ - vbus_irq = gpiod_to_irq(vbus_gpio); - irq_set_irq_type(vbus_irq, IRQ_TYPE_EDGE_BOTH); - status = request_irq(vbus_irq, - _nbu2ss_vbus_irq, IRQF_SHARED, driver_name, udc); - - if (status != 0) { - dev_err(udc->dev, "request_irq(vbus_irq) failed\n"); - return status; - } - - return status; -} - -/*-------------------------------------------------------------------------*/ -static void nbu2ss_drv_shutdown(struct platform_device *pdev) -{ - struct nbu2ss_udc *udc; - - udc = platform_get_drvdata(pdev); - if (!udc) - return; - - _nbu2ss_disable_controller(udc); -} - -/*-------------------------------------------------------------------------*/ -static void nbu2ss_drv_remove(struct platform_device *pdev) -{ - struct nbu2ss_udc *udc; - struct nbu2ss_ep *ep; - int i; - - udc = &udc_controller; - - for (i = 0; i < NUM_ENDPOINTS; i++) { - ep = &udc->ep[i]; - if (ep->virt_buf) - dma_free_coherent(udc->dev, PAGE_SIZE, (void *)ep->virt_buf, - ep->phys_buf); - } - - /* Interrupt Handler - Release */ - free_irq(vbus_irq, udc); -} - -/*-------------------------------------------------------------------------*/ -static int nbu2ss_drv_suspend(struct platform_device *pdev, pm_message_t state) -{ - struct nbu2ss_udc *udc; - - udc = platform_get_drvdata(pdev); - if (!udc) - return 0; - - if (udc->vbus_active) { - udc->vbus_active = 0; - udc->devstate = USB_STATE_NOTATTACHED; - udc->linux_suspended = 1; - - if (udc->usb_suspended) { - udc->usb_suspended = 0; - _nbu2ss_reset_controller(udc); - } - - _nbu2ss_quiesce(udc); - } - _nbu2ss_disable_controller(udc); - - return 0; -} - -/*-------------------------------------------------------------------------*/ -static int nbu2ss_drv_resume(struct platform_device *pdev) -{ - u32 data; - struct nbu2ss_udc *udc; - - udc = platform_get_drvdata(pdev); - if (!udc) - return 0; - - data = gpiod_get_value(vbus_gpio); - if (data) { - udc->vbus_active = 1; - udc->devstate = USB_STATE_POWERED; - _nbu2ss_enable_controller(udc); - _nbu2ss_pullup(udc, 1); - } - - udc->linux_suspended = 0; - - return 0; -} - -static struct platform_driver udc_driver = { - .probe = nbu2ss_drv_probe, - .shutdown = nbu2ss_drv_shutdown, - .remove_new = nbu2ss_drv_remove, - .suspend = nbu2ss_drv_suspend, - .resume = nbu2ss_drv_resume, - .driver = { - .name = driver_name, - }, -}; - -module_platform_driver(udc_driver); - -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_AUTHOR("Renesas Electronics Corporation"); -MODULE_LICENSE("GPL"); |