diff options
| author | Николай Кудрявцев <nkudriavtsev@gmail.com> | 2015-07-21 13:31:52 +0300 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.com> | 2015-07-29 14:12:26 +0200 |
| commit | 9a1d78a3780e0e37eeff11b377fc5fbb01446a36 (patch) | |
| tree | ebb6789cc6ca4851e1fb387e702bc98d74e8eecb | |
| parent | 874bf9ee69cdebc1e734a391d6b2fa3e08c9ff87 (diff) | |
| download | hid-for-4.3/chicony.tar.gz | |
HID: chicony: Add support for Acer Aspire Switch 12for-4.3/chicony
Acer Aspire Switch 12 keyboard Chicony's controller reports too big usage
index on the 1st interface. The patch fixes the report. The work based on
solution from drivers/hid/hid-holtek-mouse.c
Bug report: https://bugzilla.kernel.org/show_bug.cgi?id=101721
Signed-off-by: Nicholas Kudriavtsev <nkudriavtsev@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
| -rw-r--r-- | drivers/hid/hid-chicony.c | 26 | ||||
| -rw-r--r-- | drivers/hid/hid-core.c | 1 | ||||
| -rw-r--r-- | drivers/hid/hid-ids.h | 1 |
3 files changed, 28 insertions, 0 deletions
diff --git a/drivers/hid/hid-chicony.c b/drivers/hid/hid-chicony.c index b613d5a7968457..bc3cec199feefd 100644 --- a/drivers/hid/hid-chicony.c +++ b/drivers/hid/hid-chicony.c @@ -20,6 +20,7 @@ #include <linux/input.h> #include <linux/hid.h> #include <linux/module.h> +#include <linux/usb.h> #include "hid-ids.h" @@ -57,10 +58,34 @@ static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi, return 1; } +static __u8 *ch_switch12_report_fixup(struct hid_device *hdev, __u8 *rdesc, + unsigned int *rsize) +{ + struct usb_interface *intf = to_usb_interface(hdev->dev.parent); + + if (intf->cur_altsetting->desc.bInterfaceNumber == 1) { + /* Change usage maximum and logical maximum from 0x7fff to + * 0x2fff, so they don't exceed HID_MAX_USAGES */ + switch (hdev->product) { + case USB_DEVICE_ID_CHICONY_ACER_SWITCH12: + if (*rsize >= 128 && rdesc[64] == 0xff && rdesc[65] == 0x7f + && rdesc[69] == 0xff && rdesc[70] == 0x7f) { + hid_info(hdev, "Fixing up report descriptor\n"); + rdesc[65] = rdesc[70] = 0x2f; + } + break; + } + + } + return rdesc; +} + + static const struct hid_device_id ch_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) }, + { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) }, { } }; MODULE_DEVICE_TABLE(hid, ch_devices); @@ -68,6 +93,7 @@ MODULE_DEVICE_TABLE(hid, ch_devices); static struct hid_driver ch_driver = { .name = "chicony", .id_table = ch_devices, + .report_fixup = ch_switch12_report_fixup, .input_mapping = ch_input_mapping, }; module_hid_driver(ch_driver); diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 157c627750535e..a77d30388b4d09 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1804,6 +1804,7 @@ static const struct hid_device_id hid_have_special_driver[] = { { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) }, + { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) }, { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) }, { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_CP2112) }, { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) }, diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index b04b0820d81632..7c712dff2ca1c6 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -230,6 +230,7 @@ #define USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE 0x1053 #define USB_DEVICE_ID_CHICONY_WIRELESS2 0x1123 #define USB_DEVICE_ID_CHICONY_AK1D 0x1125 +#define USB_DEVICE_ID_CHICONY_ACER_SWITCH12 0x1421 #define USB_VENDOR_ID_CHUNGHWAT 0x2247 #define USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH 0x0001 |