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authorDaniel Mack <daniel@zonque.org>2018-06-27 18:52:35 (GMT)
committerJacek Anaszewski <jacek.anaszewski@gmail.com>2018-07-03 20:12:40 (GMT)
commit73f103c9528135bc896459a58e2371ce86090aea (patch)
tree5abb854dd586e6a78036e7df6e26b7ce01e44033 /drivers/leds
parentd8be286739d6317b2c4b2a6c2cbf63d76410ff90 (diff)
leds: lt3593: switch to gpiod interface
Clean up the code a bit and transition over to the gpiod based interface. Signed-off-by: Daniel Mack <daniel@zonque.org> Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Diffstat (limited to 'drivers/leds')
-rw-r--r--drivers/leds/leds-lt3593.c26
1 files changed, 12 insertions, 14 deletions
diff --git a/drivers/leds/leds-lt3593.c b/drivers/leds/leds-lt3593.c
index 1a3dc34..a096ee6 100644
--- a/drivers/leds/leds-lt3593.c
+++ b/drivers/leds/leds-lt3593.c
@@ -21,12 +21,13 @@
#include <linux/leds.h>
#include <linux/delay.h>
#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/module.h>
struct lt3593_led_data {
struct led_classdev cdev;
- unsigned gpio;
+ struct gpio_desc *gpiod;
};
static int lt3593_led_set(struct led_classdev *led_cdev,
@@ -46,25 +47,25 @@ static int lt3593_led_set(struct led_classdev *led_cdev,
*/
if (value == 0) {
- gpio_set_value_cansleep(led_dat->gpio, 0);
+ gpiod_set_value_cansleep(led_dat->gpiod, 0);
return 0;
}
pulses = 32 - (value * 32) / 255;
if (pulses == 0) {
- gpio_set_value_cansleep(led_dat->gpio, 0);
+ gpiod_set_value_cansleep(led_dat->gpiod, 0);
mdelay(1);
- gpio_set_value_cansleep(led_dat->gpio, 1);
+ gpiod_set_value_cansleep(led_dat->gpiod, 1);
return 0;
}
- gpio_set_value_cansleep(led_dat->gpio, 1);
+ gpiod_set_value_cansleep(led_dat->gpiod, 1);
while (pulses--) {
- gpio_set_value_cansleep(led_dat->gpio, 0);
+ gpiod_set_value_cansleep(led_dat->gpiod, 0);
udelay(1);
- gpio_set_value_cansleep(led_dat->gpio, 1);
+ gpiod_set_value_cansleep(led_dat->gpiod, 1);
udelay(1);
}
@@ -85,15 +86,8 @@ static struct lt3593_led_data *lt3593_led_probe_pdata(struct device *dev)
if (!led_data)
return ERR_PTR(-ENOMEM);
- if (!gpio_is_valid(template->gpio)) {
- dev_info(dev, "skipping unavailable LT3593 LED at gpio "
- "%d (%s)\n", template->gpio, template->name);
- return ERR_PTR(-EINVAL);
- }
-
led_data->cdev.name = template->name;
led_data->cdev.default_trigger = template->default_trigger;
- led_data->gpio = template->gpio;
led_data->cdev.brightness_set_blocking = lt3593_led_set;
state = (template->default_state == LEDS_GPIO_DEFSTATE_ON);
@@ -108,6 +102,10 @@ static struct lt3593_led_data *lt3593_led_probe_pdata(struct device *dev)
if (ret < 0)
return ERR_PTR(ret);
+ led_data->gpiod = gpio_to_desc(template->gpio);
+ if (!led_data->gpiod)
+ return ERR_PTR(-EPROBE_DEFER);
+
ret = devm_led_classdev_register(dev, &led_data->cdev);
if (ret < 0)
return ERR_PTR(ret);

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