From: Aleksandrs Vinarskis Date: Thu, 31 Oct 2024 07:31:41 +0000 (+0100) Subject: HID: i2c-hid: introduce re-power-on quirk X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=e61080220ae7b52920aed292c8d399ea8ce7cfdb;p=users%2Fjedix%2Flinux-maple.git HID: i2c-hid: introduce re-power-on quirk It appears some keyboards from vendor 'QTEC' will not work properly until suspend & resume. Empirically narrowed down to solution of re-sending power on command _after_ initialization was completed before the end of initial probing. Signed-off-by: Aleksandrs Vinarskis Signed-off-by: Jiri Kosina --- diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c index 4e87380d3edd6..c1c2ef9a9d68f 100644 --- a/drivers/hid/i2c-hid/i2c-hid-core.c +++ b/drivers/hid/i2c-hid/i2c-hid-core.c @@ -51,6 +51,7 @@ #define I2C_HID_QUIRK_NO_WAKEUP_AFTER_RESET BIT(4) #define I2C_HID_QUIRK_NO_SLEEP_ON_SUSPEND BIT(5) #define I2C_HID_QUIRK_DELAY_WAKEUP_AFTER_RESUME BIT(6) +#define I2C_HID_QUIRK_RE_POWER_ON BIT(7) /* Command opcodes */ #define I2C_HID_OPCODE_RESET 0x01 @@ -1073,7 +1074,11 @@ static int i2c_hid_core_register_hid(struct i2c_hid *ihid) return ret; } - return 0; + /* At least some QTEC devices need this after initialization */ + if (ihid->quirks & I2C_HID_QUIRK_RE_POWER_ON) + ret = i2c_hid_set_power(ihid, I2C_HID_PWR_ON); + + return ret; } static int i2c_hid_core_probe_panel_follower(struct i2c_hid *ihid)