diff options
| author | NeilBrown <neilb@suse.de> | 2013-11-01 03:41:20 +0100 |
|---|---|---|
| committer | Bryan Wu <cooloney@gmail.com> | 2014-01-28 02:28:46 +0100 |
| commit | 10ead6e59934be76b6ce255d6b842a432b207b7f (patch) | |
| tree | aab76e123d6cda1cc9b3a484a3bdbf039e639c2c /drivers/leds | |
| parent | LEDS: tca6507 - fix bugs in parsing of device-tree configuration. (diff) | |
| download | linux-10ead6e59934be76b6ce255d6b842a432b207b7f.tar.xz linux-10ead6e59934be76b6ce255d6b842a432b207b7f.zip | |
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 <neilb@suse.de>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/leds-tca6507.c | 6 |
1 files changed, 6 insertions, 0 deletions
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; } |