The DualSense player LEDs were so far not adjustable from user-space.
This patch exposes each LED individually through the LED class. Each
LED uses the new 'player' function resulting in a name like:
'inputX:white:player-1' for the first LED.
Signed-off-by: Roderick Colenbrander <roderick.colenbrander@xxxxxxxx>
---
drivers/hid/hid-playstation.c | 85 ++++++++++++++++++++++++++++++++++-
1 file changed, 84 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-playstation.c b/drivers/hid/hid-playstation.c
index ff2fc315a89d..9b96239bba5f 100644
--- a/drivers/hid/hid-playstation.c
+++ b/drivers/hid/hid-playstation.c
@@ -56,6 +56,13 @@ struct ps_calibration_data {
int sens_denom;
};
+struct ps_led_info {
+ const char *name;
+ const char *color;
+ enum led_brightness (*brightness_get)(struct led_classdev *cdev);
+ void (*brightness_set)(struct led_classdev *cdev, enum led_brightness);
+};
+
/* Seed values for DualShock4 / DualSense CRC32 for different report types. */
#define PS_INPUT_CRC32_SEED 0xA1
#define PS_OUTPUT_CRC32_SEED 0xA2
@@ -531,6 +538,32 @@ static int ps_get_report(struct hid_device *hdev, uint8_t report_id, uint8_t *bu
return 0;
}
+static int ps_led_register(struct ps_device *ps_dev, struct led_classdev *led,
+ const struct ps_led_info *led_info)
+{
+ int ret;
+
+ led->name = devm_kasprintf(&ps_dev->hdev->dev, GFP_KERNEL,
+ "%s:%s:%s", ps_dev->input_dev_name, led_info->color, led_info->name);
+
+ if (!led->name)
+ return -ENOMEM;
+
+ led->brightness = 0;
+ led->max_brightness = 1;
+ led->flags = LED_CORE_SUSPENDRESUME;
+ led->brightness_get = led_info->brightness_get;
+ led->brightness_set = led_info->brightness_set;
+
+ ret = devm_led_classdev_register(&ps_dev->hdev->dev, led);
+ if (ret) {
+ hid_err(ps_dev->hdev, "Failed to register LED %s: %d\n", led_info->name, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
/* Register a DualSense/DualShock4 RGB lightbar represented by a multicolor LED. */
static int ps_lightbar_register(struct ps_device *ps_dev, struct led_classdev_mc *lightbar_mc_dev,
int (*brightness_set)(struct led_classdev *, enum led_brightness))
@@ -822,6 +855,35 @@ static int dualsense_lightbar_set_brightness(struct led_classdev *cdev,
return 0;
}
+static enum led_brightness dualsense_player_led_get_brightness(struct led_classdev *led)
+{
+ struct hid_device *hdev = to_hid_device(led->dev->parent);
+ struct dualsense *ds = hid_get_drvdata(hdev);
+
+ return !!(ds->player_leds_state & BIT(led - ds->player_leds));
+}
+
+static void dualsense_player_led_set_brightness(struct led_classdev *led, enum led_brightness value)
+{
+ struct hid_device *hdev = to_hid_device(led->dev->parent);
+ struct dualsense *ds = hid_get_drvdata(hdev);
+ unsigned long flags;
+ unsigned int led_index;
+
+ spin_lock_irqsave(&ds->base.lock, flags);
+
+ led_index = led - ds->player_leds;
+ if (value == LED_OFF)
+ ds->player_leds_state &= ~BIT(led_index);
+ else
+ ds->player_leds_state |= BIT(led_index);
+
+ ds->update_player_leds = true;
+ spin_unlock_irqrestore(&ds->base.lock, flags);
+
+ schedule_work(&ds->output_worker);
+}
+
static void dualsense_init_output_report(struct dualsense *ds, struct dualsense_output_report *rp,
void *buf)
{
@@ -1207,7 +1269,20 @@ static struct ps_device *dualsense_create(struct hid_device *hdev)
struct dualsense *ds;
struct ps_device *ps_dev;
uint8_t max_output_report_size;
- int ret;
+ int i, ret;
+
+ static const struct ps_led_info player_leds_info[] = {
+ { LED_FUNCTION_PLAYER "-1", "white", dualsense_player_led_get_brightness,
+ dualsense_player_led_set_brightness },
+ { LED_FUNCTION_PLAYER "-2", "white", dualsense_player_led_get_brightness,
+ dualsense_player_led_set_brightness },
+ { LED_FUNCTION_PLAYER "-3", "white", dualsense_player_led_get_brightness,
+ dualsense_player_led_set_brightness },
+ { LED_FUNCTION_PLAYER "-4", "white", dualsense_player_led_get_brightness,
+ dualsense_player_led_set_brightness },
+ { LED_FUNCTION_PLAYER "-5", "white", dualsense_player_led_get_brightness,
+ dualsense_player_led_set_brightness }
+ };
ds = devm_kzalloc(&hdev->dev, sizeof(*ds), GFP_KERNEL);
if (!ds)
@@ -1297,6 +1372,14 @@ static struct ps_device *dualsense_create(struct hid_device *hdev)
/* Set default lightbar color. */
dualsense_set_lightbar(ds, 0, 0, 128); /* blue */
+ for (i = 0; i < ARRAY_SIZE(player_leds_info); i++) {
+ const struct ps_led_info *led_info = &player_leds_info[i];
+
+ ret = ps_led_register(ps_dev, &ds->player_leds[i], led_info);
+ if (ret < 0)
+ goto err;
+ }
+
ret = ps_device_set_player_id(ps_dev);
if (ret) {
hid_err(hdev, "Failed to assign player id for DualSense: %d\n", ret);
--
2.31.1
