Commit e6108022 authored by Aleksandrs Vinarskis's avatar Aleksandrs Vinarskis Committed by Jiri Kosina
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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: default avatarAleksandrs Vinarskis <alex.vinarskis@gmail.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.com>
parent 50a78409

drivers/hid/i2c-hid/i2c-hid-core.c

+6 −1
Original line number Diff line number Diff line
@@ -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)