diff options
author | David S. Miller <davem@davemloft.net> | 2019-02-20 11:34:07 +0300 |
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committer | David S. Miller <davem@davemloft.net> | 2019-02-20 11:34:07 +0300 |
commit | 375ca548f7e3ac82acdd0959eddd1fa0e17c35cc (patch) | |
tree | 5360dc427e4eff7123613419ee522b7fda831de0 /drivers/input/keyboard/qt2160.c | |
parent | 58066ac9d7f5dcde4ef08c03b7e127f0522d9ea0 (diff) | |
parent | 40e196a906d969fd10d885c692d2674b3d657006 (diff) | |
download | linux-375ca548f7e3ac82acdd0959eddd1fa0e17c35cc.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Two easily resolvable overlapping change conflicts, one in
TCP and one in the eBPF verifier.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/input/keyboard/qt2160.c')
-rw-r--r-- | drivers/input/keyboard/qt2160.c | 69 |
1 files changed, 27 insertions, 42 deletions
diff --git a/drivers/input/keyboard/qt2160.c b/drivers/input/keyboard/qt2160.c index 43b86482dda0..d466bc07aebb 100644 --- a/drivers/input/keyboard/qt2160.c +++ b/drivers/input/keyboard/qt2160.c @@ -58,10 +58,9 @@ static unsigned char qt2160_key2code[] = { struct qt2160_led { struct qt2160_data *qt2160; struct led_classdev cdev; - struct work_struct work; char name[32]; int id; - enum led_brightness new_brightness; + enum led_brightness brightness; }; #endif @@ -74,7 +73,6 @@ struct qt2160_data { u16 key_matrix; #ifdef CONFIG_LEDS_CLASS struct qt2160_led leds[QT2160_NUM_LEDS_X]; - struct mutex led_lock; #endif }; @@ -83,46 +81,39 @@ static int qt2160_write(struct i2c_client *client, u8 reg, u8 data); #ifdef CONFIG_LEDS_CLASS -static void qt2160_led_work(struct work_struct *work) +static int qt2160_led_set(struct led_classdev *cdev, + enum led_brightness value) { - struct qt2160_led *led = container_of(work, struct qt2160_led, work); + struct qt2160_led *led = container_of(cdev, struct qt2160_led, cdev); struct qt2160_data *qt2160 = led->qt2160; struct i2c_client *client = qt2160->client; - int value = led->new_brightness; u32 drive, pwmen; - mutex_lock(&qt2160->led_lock); - - drive = qt2160_read(client, QT2160_CMD_DRIVE_X); - pwmen = qt2160_read(client, QT2160_CMD_PWMEN_X); - if (value != LED_OFF) { - drive |= (1 << led->id); - pwmen |= (1 << led->id); - - } else { - drive &= ~(1 << led->id); - pwmen &= ~(1 << led->id); - } - qt2160_write(client, QT2160_CMD_DRIVE_X, drive); - qt2160_write(client, QT2160_CMD_PWMEN_X, pwmen); + if (value != led->brightness) { + drive = qt2160_read(client, QT2160_CMD_DRIVE_X); + pwmen = qt2160_read(client, QT2160_CMD_PWMEN_X); + if (value != LED_OFF) { + drive |= BIT(led->id); + pwmen |= BIT(led->id); - /* - * Changing this register will change the brightness - * of every LED in the qt2160. It's a HW limitation. - */ - if (value != LED_OFF) - qt2160_write(client, QT2160_CMD_PWM_DUTY, value); + } else { + drive &= ~BIT(led->id); + pwmen &= ~BIT(led->id); + } + qt2160_write(client, QT2160_CMD_DRIVE_X, drive); + qt2160_write(client, QT2160_CMD_PWMEN_X, pwmen); - mutex_unlock(&qt2160->led_lock); -} + /* + * Changing this register will change the brightness + * of every LED in the qt2160. It's a HW limitation. + */ + if (value != LED_OFF) + qt2160_write(client, QT2160_CMD_PWM_DUTY, value); -static void qt2160_led_set(struct led_classdev *cdev, - enum led_brightness value) -{ - struct qt2160_led *led = container_of(cdev, struct qt2160_led, cdev); + led->brightness = value; + } - led->new_brightness = value; - schedule_work(&led->work); + return 0; } #endif /* CONFIG_LEDS_CLASS */ @@ -293,20 +284,16 @@ static int qt2160_register_leds(struct qt2160_data *qt2160) int ret; int i; - mutex_init(&qt2160->led_lock); - for (i = 0; i < QT2160_NUM_LEDS_X; i++) { struct qt2160_led *led = &qt2160->leds[i]; snprintf(led->name, sizeof(led->name), "qt2160:x%d", i); led->cdev.name = led->name; - led->cdev.brightness_set = qt2160_led_set; + led->cdev.brightness_set_blocking = qt2160_led_set; led->cdev.brightness = LED_OFF; led->id = i; led->qt2160 = qt2160; - INIT_WORK(&led->work, qt2160_led_work); - ret = led_classdev_register(&client->dev, &led->cdev); if (ret < 0) return ret; @@ -324,10 +311,8 @@ static void qt2160_unregister_leds(struct qt2160_data *qt2160) { int i; - for (i = 0; i < QT2160_NUM_LEDS_X; i++) { + for (i = 0; i < QT2160_NUM_LEDS_X; i++) led_classdev_unregister(&qt2160->leds[i].cdev); - cancel_work_sync(&qt2160->leds[i].work); - } } #else |