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HID: lg-g15: Add support for the M1-M3 and MR LEDs 

Add support for controlling the LEDs below the M1-M3 and MR keys.

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 2019-08-28 14:41:27 +02:00 committed by Jiri Kosina
parent 97b741aba9
commit d5b5fc8c89
1 changed files with 47 additions and 7 deletions
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54
drivers/hid/hid-lg-g15.c
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@ -28,6 +28,11 @@ enum lg_g15_led_type {
LG_G15_KBD_BRIGHTNESS,
LG_G15_LCD_BRIGHTNESS,
LG_G15_BRIGHTNESS_MAX,
LG_G15_MACRO_PRESET1 = 2,
LG_G15_MACRO_PRESET2,
LG_G15_MACRO_PRESET3,
LG_G15_MACRO_RECORD,
LG_G15_LED_MAX
};
struct lg_g15_led {
@ -45,7 +50,7 @@ struct lg_g15_data {
struct input_dev *input;
struct hid_device *hdev;
enum lg_g15_model model;
struct lg_g15_led leds[LG_G15_BRIGHTNESS_MAX];
struct lg_g15_led leds[LG_G15_LED_MAX];
};
static int lg_g15_update_led_brightness(struct lg_g15_data *g15)
@ -62,6 +67,16 @@ static int lg_g15_update_led_brightness(struct lg_g15_data *g15)
g15->leds[LG_G15_KBD_BRIGHTNESS].brightness = g15->transfer_buf[1];
g15->leds[LG_G15_LCD_BRIGHTNESS].brightness = g15->transfer_buf[2];
g15->leds[LG_G15_MACRO_PRESET1].brightness =
!(g15->transfer_buf[3] & 0x01);
g15->leds[LG_G15_MACRO_PRESET2].brightness =
!(g15->transfer_buf[3] & 0x02);
g15->leds[LG_G15_MACRO_PRESET3].brightness =
!(g15->transfer_buf[3] & 0x04);
g15->leds[LG_G15_MACRO_RECORD].brightness =
!(g15->transfer_buf[3] & 0x08);
return 0;
}
@ -86,7 +101,8 @@ static int lg_g15_led_set(struct led_classdev *led_cdev,
struct lg_g15_led *g15_led =
container_of(led_cdev, struct lg_g15_led, cdev);
struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent);
int ret;
u8 val, mask = 0;
int i, ret;
/* Ignore LED off on unregister / keyboard unplug */
if (led_cdev->flags & LED_UNREGISTERING)
@ -95,10 +111,26 @@ static int lg_g15_led_set(struct led_classdev *led_cdev,
mutex_lock(&g15->mutex);
g15->transfer_buf[0] = LG_G15_FEATURE_REPORT;
g15->transfer_buf[1] = g15_led->led + 1;
g15->transfer_buf[2] = brightness << (g15_led->led * 4);
g15->transfer_buf[3] = 0;
if (g15_led->led < LG_G15_BRIGHTNESS_MAX) {
g15->transfer_buf[1] = g15_led->led + 1;
g15->transfer_buf[2] = brightness << (g15_led->led * 4);
} else {
for (i = LG_G15_MACRO_PRESET1; i < LG_G15_LED_MAX; i++) {
if (i == g15_led->led)
val = brightness;
else
val = g15->leds[i].brightness;
if (val)
mask |= 1 << (i - LG_G15_MACRO_PRESET1);
}
g15->transfer_buf[1] = 0x04;
g15->transfer_buf[2] = ~mask;
}
ret = hid_hw_raw_request(g15->hdev, LG_G15_FEATURE_REPORT,
g15->transfer_buf, 4,
HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
@ -257,14 +289,22 @@ static int lg_g15_register_led(struct lg_g15_data *g15, int i)
const char * const led_names[] = {
"g15::kbd_backlight",
"g15::lcd_backlight",
"g15::macro_preset1",
"g15::macro_preset2",
"g15::macro_preset3",
"g15::macro_record",
};
g15->leds[i].led = i;
g15->leds[i].cdev.name = led_names[i];
g15->leds[i].cdev.brightness_set_blocking = lg_g15_led_set;
g15->leds[i].cdev.brightness_get = lg_g15_led_get;
g15->leds[i].cdev.flags = LED_BRIGHT_HW_CHANGED;
g15->leds[i].cdev.max_brightness = 2;
if (i < LG_G15_BRIGHTNESS_MAX) {
g15->leds[i].cdev.flags = LED_BRIGHT_HW_CHANGED;
g15->leds[i].cdev.max_brightness = 2;
} else {
g15->leds[i].cdev.max_brightness = 1;
}
return devm_led_classdev_register(&g15->hdev->dev, &g15->leds[i].cdev);
}
@ -377,7 +417,7 @@ static int lg_g15_probe(struct hid_device *hdev, const struct hid_device_id *id)
goto error_hw_stop;
/* Register LED devices */
for (i = 0; i < LG_G15_BRIGHTNESS_MAX; i++) {
for (i = 0; i < LG_G15_LED_MAX; i++) {
ret = lg_g15_register_led(g15, i);
if (ret)
goto error_hw_stop;