Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Hans de Goede |
274 |
67.16% |
3 |
33.33% |
| Daniel Scally |
118 |
28.92% |
1 |
11.11% |
| Andy Shevchenko |
10 |
2.45% |
3 |
33.33% |
| ChiYuan Huang |
4 |
0.98% |
1 |
11.11% |
| Uwe Kleine-König |
2 |
0.49% |
1 |
11.11% |
| Total |
408 |
|
9 |
|
// SPDX-License-Identifier: GPL-2.0
/* Author: Hans de Goede <hdegoede@redhat.com> */
#include <linux/acpi.h>
#include <linux/gpio/consumer.h>
#include <linux/leds.h>
#include "common.h"
static int int3472_pled_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct int3472_discrete_device *int3472 =
container_of(led_cdev, struct int3472_discrete_device, pled.classdev);
gpiod_set_value_cansleep(int3472->pled.gpio, brightness);
return 0;
}
int skl_int3472_register_pled(struct int3472_discrete_device *int3472,
struct acpi_resource_gpio *agpio, u32 polarity)
{
char *p, *path = agpio->resource_source.string_ptr;
int ret;
if (int3472->pled.classdev.dev)
return -EBUSY;
int3472->pled.gpio = acpi_get_and_request_gpiod(path, agpio->pin_table[0],
"int3472,privacy-led");
if (IS_ERR(int3472->pled.gpio))
return dev_err_probe(int3472->dev, PTR_ERR(int3472->pled.gpio),
"getting privacy LED GPIO\n");
if (polarity == GPIO_ACTIVE_LOW)
gpiod_toggle_active_low(int3472->pled.gpio);
/* Ensure the pin is in output mode and non-active state */
gpiod_direction_output(int3472->pled.gpio, 0);
/* Generate the name, replacing the ':' in the ACPI devname with '_' */
snprintf(int3472->pled.name, sizeof(int3472->pled.name),
"%s::privacy_led", acpi_dev_name(int3472->sensor));
p = strchr(int3472->pled.name, ':');
if (p)
*p = '_';
int3472->pled.classdev.name = int3472->pled.name;
int3472->pled.classdev.max_brightness = 1;
int3472->pled.classdev.brightness_set_blocking = int3472_pled_set;
ret = led_classdev_register(int3472->dev, &int3472->pled.classdev);
if (ret)
goto err_free_gpio;
int3472->pled.lookup.provider = int3472->pled.name;
int3472->pled.lookup.dev_id = int3472->sensor_name;
int3472->pled.lookup.con_id = "privacy-led";
led_add_lookup(&int3472->pled.lookup);
return 0;
err_free_gpio:
gpiod_put(int3472->pled.gpio);
return ret;
}
void skl_int3472_unregister_pled(struct int3472_discrete_device *int3472)
{
if (IS_ERR_OR_NULL(int3472->pled.classdev.dev))
return;
led_remove_lookup(&int3472->pled.lookup);
led_classdev_unregister(&int3472->pled.classdev);
gpiod_put(int3472->pled.gpio);
}