From 10ead6e59934be76b6ce255d6b842a432b207b7f Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 31 Oct 2013 19:41:20 -0700 Subject: LEDS: tca6507: add device-tree support for GPIO configuration. The 7 lines driven by the TCA6507 can either drive LEDs or act as output-only GPIOs. To make this distinction in devicetree we use the "compatible" property. If the device attached to a line is "compatible" with "gpio", we treat it like a GPIO. If it is "compatible" with "led" (or if no "compatible" value is set) we treat it like an LED. (cooloney@gmail.com: fix typo in the subject) Signed-off-by: NeilBrown Signed-off-by: Bryan Wu --- drivers/leds/leds-tca6507.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers') diff --git a/drivers/leds/leds-tca6507.c b/drivers/leds/leds-tca6507.c index f5063f447463..93a2b1759054 100644 --- a/drivers/leds/leds-tca6507.c +++ b/drivers/leds/leds-tca6507.c @@ -638,6 +638,9 @@ static int tca6507_probe_gpios(struct i2c_client *client, tca->gpio.direction_output = tca6507_gpio_direction_output; tca->gpio.set = tca6507_gpio_set_value; tca->gpio.dev = &client->dev; +#ifdef CONFIG_OF_GPIO + tca->gpio.of_node = of_node_get(client->dev.of_node); +#endif err = gpiochip_add(&tca->gpio); if (err) { tca->gpio.ngpio = 0; @@ -696,6 +699,8 @@ tca6507_led_dt_init(struct i2c_client *client) led.default_trigger = of_get_property(child, "linux,default-trigger", NULL); led.flags = 0; + if (of_property_match_string(child, "compatible", "gpio") >= 0) + led.flags |= TCA6507_MAKE_GPIO; ret = of_property_read_u32(child, "reg", ®); if (ret != 0 || reg < 0 || reg >= NUM_LEDS) continue; @@ -709,6 +714,7 @@ tca6507_led_dt_init(struct i2c_client *client) pdata->leds.leds = tca_leds; pdata->leds.num_leds = NUM_LEDS; + pdata->gpio_base = -1; return pdata; } -- cgit v1.2.3