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HID: i2c-hid: Add no-irq-after-reset quirk for 0911:5288 device 

Several cheap Apollo Lake based laptops / 2-in-1s use an i2c-hid mt
touchpad which is advertised by the DSDT with an ACPI HID of "SYNA3602",
this touchpad can be found on e.g. the Cube Thinker and the EZBook 3 Pro.

On my "T-bao Tbook air" the i2c-hid driver fails to bind to this touchpad:
"i2c_hid i2c-SYNA3602:00: failed to reset device.".

After some debuging this it seems that this touchpad simply never sends
an interrupt after a reset as expected by the i2c hid driver. This commit
adds a quirk for this device, making i2c_hid_command sleep 100ms after
a reset instead of waiting for an irq, fixing i2c-hid failing to bind to
this touchpad.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Hans de Goede 2017-11-07 13:28:00 +01:00 committed by Jiri Kosina
parent cde3076bdc
commit 402946a8ef
2 changed files with 9 additions and 1 deletions
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3
drivers/hid/hid-ids.h
View File

@ -507,6 +507,9 @@
#define USB_DEVICE_ID_GYRATION_REMOTE_2 0x0003
#define USB_DEVICE_ID_GYRATION_REMOTE_3 0x0008
#define I2C_VENDOR_ID_HANTICK 0x0911
#define I2C_PRODUCT_ID_HANTICK_5288 0x5288
#define USB_VENDOR_ID_HANWANG 0x0b57
#define USB_DEVICE_ID_HANWANG_TABLET_FIRST 0x5000
#define USB_DEVICE_ID_HANWANG_TABLET_LAST 0x8fff

7
drivers/hid/i2c-hid/i2c-hid.c
View File

@ -46,6 +46,7 @@
/* quirks to control the device */
#define I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV BIT(0)
#define I2C_HID_QUIRK_NO_IRQ_AFTER_RESET BIT(1)
/* flags */
#define I2C_HID_STARTED 0
@ -168,6 +169,8 @@ static const struct i2c_hid_quirks {
I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV },
{ USB_VENDOR_ID_WEIDA, USB_DEVICE_ID_WEIDA_8755,
I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV },
{ I2C_VENDOR_ID_HANTICK, I2C_PRODUCT_ID_HANTICK_5288,
I2C_HID_QUIRK_NO_IRQ_AFTER_RESET },
{ 0, 0 }
};
@ -252,7 +255,9 @@ static int __i2c_hid_command(struct i2c_client *client,
ret = 0;
if (wait) {
if (wait && (ihid->quirks & I2C_HID_QUIRK_NO_IRQ_AFTER_RESET)) {
msleep(100);
} else if (wait) {
i2c_hid_dbg(ihid, "%s: waiting...\n", __func__);
if (!wait_event_timeout(ihid->wait,
!test_bit(I2C_HID_RESET_PENDING, &ihid->flags),