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| author | Dmitry Savin <envelsavinds@gmail.com> | 2024-07-16 23:27:57 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-09-18 19:24:05 +0200 |
| commit | 1d5c7d0a49ec9d8786f266ac6d1d7c4960e1787b (patch) | |
| tree | 4d0959e649321bc032782d581a12b1c7a9ff83ff /drivers/hid | |
| parent | 11eb4a8228f69118c699f29e26b09c755b1cda92 (diff) | |
| download | linux-rpi-1d5c7d0a49ec9d8786f266ac6d1d7c4960e1787b.tar.gz linux-rpi-1d5c7d0a49ec9d8786f266ac6d1d7c4960e1787b.tar.bz2 linux-rpi-1d5c7d0a49ec9d8786f266ac6d1d7c4960e1787b.zip | |
HID: multitouch: Add support for GT7868Q
[ Upstream commit c8000deb68365b461b324d68c7ea89d730f0bb85 ]
GT7868Q has incorrect data in the report and needs a fixup.
The change enables haptic touchpad on Lenovo ThinkBook 13x Gen 4
and has been tested on the device.
Signed-off-by: Dmitry Savin <envelsavinds@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/hid-ids.h | 2 | ||||
| -rw-r--r-- | drivers/hid/hid-multitouch.c | 33 |
2 files changed, 35 insertions, 0 deletions
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 4246348ca16e..a5987fafbedd 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -515,6 +515,8 @@ #define USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100 0xe100 #define I2C_VENDOR_ID_GOODIX 0x27c6 +#define I2C_DEVICE_ID_GOODIX_01E8 0x01e8 +#define I2C_DEVICE_ID_GOODIX_01E9 0x01e9 #define I2C_DEVICE_ID_GOODIX_01F0 0x01f0 #define USB_VENDOR_ID_GOODTOUCH 0x1aad diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 17efe6e2a1a4..8ef41d6e71d4 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -1442,6 +1442,30 @@ static int mt_event(struct hid_device *hid, struct hid_field *field, return 0; } +static __u8 *mt_report_fixup(struct hid_device *hdev, __u8 *rdesc, + unsigned int *size) +{ + if (hdev->vendor == I2C_VENDOR_ID_GOODIX && + (hdev->product == I2C_DEVICE_ID_GOODIX_01E8 || + hdev->product == I2C_DEVICE_ID_GOODIX_01E9)) { + if (rdesc[607] == 0x15) { + rdesc[607] = 0x25; + dev_info( + &hdev->dev, + "GT7868Q report descriptor fixup is applied.\n"); + } else { + dev_info( + &hdev->dev, + "The byte is not expected for fixing the report descriptor. \ +It's possible that the touchpad firmware is not suitable for applying the fix. \ +got: %x\n", + rdesc[607]); + } + } + + return rdesc; +} + static void mt_report(struct hid_device *hid, struct hid_report *report) { struct mt_device *td = hid_get_drvdata(hid); @@ -2038,6 +2062,14 @@ static const struct hid_device_id mt_devices[] = { MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL, USB_DEVICE_ID_GAMETEL_MT_MODE) }, + /* Goodix GT7868Q devices */ + { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, + HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, + I2C_DEVICE_ID_GOODIX_01E8) }, + { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU, + HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX, + I2C_DEVICE_ID_GOODIX_01E8) }, + /* GoodTouch panels */ { .driver_data = MT_CLS_NSMU, MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, @@ -2273,6 +2305,7 @@ static struct hid_driver mt_driver = { .feature_mapping = mt_feature_mapping, .usage_table = mt_grabbed_usages, .event = mt_event, + .report_fixup = mt_report_fixup, .report = mt_report, #ifdef CONFIG_PM .suspend = mt_suspend, |