From 420a86436f6cfc3d53c4c503bc65e988ba8dc086 Mon Sep 17 00:00:00 2001 From: Sven Wegener Date: Sat, 12 Jun 2021 21:56:22 +0200 Subject: mediatek: add led count The LEDs connected to the MCU are so-called smart LEDs and their signal is daisy-chained. Because of this, the MCU needs to be told how many LEDs are connected. It also means the LEDs could be individually controlled, if the MCU has a command for this. Signed-off-by: Sven Wegener (cherry picked from commit 76198e8f09a607c6aca2621f59d7a4cd7f6653e3) --- target/linux/mediatek/files-5.10/drivers/leds/leds-ubnt-ledbar.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/target/linux/mediatek/files-5.10/drivers/leds/leds-ubnt-ledbar.c b/target/linux/mediatek/files-5.10/drivers/leds/leds-ubnt-ledbar.c index 10d240d2be..555340c5e8 100644 --- a/target/linux/mediatek/files-5.10/drivers/leds/leds-ubnt-ledbar.c +++ b/target/linux/mediatek/files-5.10/drivers/leds/leds-ubnt-ledbar.c @@ -31,9 +31,11 @@ #define UBNT_LEDBAR_TRANSACTION_BLUE_IDX 2 #define UBNT_LEDBAR_TRANSACTION_GREEN_IDX 3 #define UBNT_LEDBAR_TRANSACTION_RED_IDX 4 +#define UBNT_LEDBAR_TRANSACTION_LED_COUNT_IDX 6 struct ubnt_ledbar { struct mutex lock; + u32 led_count; struct i2c_client *client; struct led_classdev led_red; struct led_classdev led_green; @@ -60,7 +62,7 @@ static int ubnt_ledbar_apply_state(struct ubnt_ledbar *ledbar) char setup_msg[UBNT_LEDBAR_TRANSACTION_LENGTH] = {0x40, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11}; char led_msg[UBNT_LEDBAR_TRANSACTION_LENGTH] = {0x40, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x01, 0x00}; + 0x00, 0x00, 0x00, 0x00}; char i2c_response; int ret = 0; @@ -69,6 +71,7 @@ static int ubnt_ledbar_apply_state(struct ubnt_ledbar *ledbar) led_msg[UBNT_LEDBAR_TRANSACTION_BLUE_IDX] = ledbar->led_blue.brightness; led_msg[UBNT_LEDBAR_TRANSACTION_GREEN_IDX] = ledbar->led_green.brightness; led_msg[UBNT_LEDBAR_TRANSACTION_RED_IDX] = ledbar->led_red.brightness; + led_msg[UBNT_LEDBAR_TRANSACTION_LED_COUNT_IDX] = ledbar->led_count; gpiod_set_value(ledbar->enable_gpio, 1); @@ -191,6 +194,9 @@ static int ubnt_ledbar_probe(struct i2c_client *client, return ret; } + ledbar->led_count = 1; + of_property_read_u32(np, "led-count", &ledbar->led_count); + ledbar->client = client; mutex_init(&ledbar->lock); -- cgit v1.2.3