diff options
| -rw-r--r-- | drivers/hid/i2c-hid/i2c-hid-core.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c index 7608ee053114..ac44bf752ff1 100644 --- a/drivers/hid/i2c-hid/i2c-hid-core.c +++ b/drivers/hid/i2c-hid/i2c-hid-core.c @@ -48,6 +48,7 @@ #define I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV BIT(0) #define I2C_HID_QUIRK_NO_IRQ_AFTER_RESET BIT(1) #define I2C_HID_QUIRK_BOGUS_IRQ BIT(4) +#define I2C_HID_QUIRK_RESET_ON_RESUME BIT(5) /* flags */ #define I2C_HID_STARTED 0 @@ -174,6 +175,8 @@ static const struct i2c_hid_quirks { I2C_HID_QUIRK_NO_IRQ_AFTER_RESET }, { USB_VENDOR_ID_ELAN, HID_ANY_ID, I2C_HID_QUIRK_BOGUS_IRQ }, + { USB_VENDOR_ID_ALPS_JP, HID_ANY_ID, + I2C_HID_QUIRK_RESET_ON_RESUME }, { 0, 0 } }; @@ -1214,8 +1217,15 @@ static int i2c_hid_resume(struct device *dev) * solves "incomplete reports" on Raydium devices 2386:3118 and * 2386:4B33 and fixes various SIS touchscreens no longer sending * data after a suspend/resume. + * + * However some ALPS touchpads generate IRQ storm without reset, so + * let's still reset them here. */ - ret = i2c_hid_set_power(client, I2C_HID_PWR_ON); + if (ihid->quirks & I2C_HID_QUIRK_RESET_ON_RESUME) + ret = i2c_hid_hwreset(client); + else + ret = i2c_hid_set_power(client, I2C_HID_PWR_ON); + if (ret) return ret; |