summaryrefslogtreecommitdiff
path: root/drivers/leds
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/leds')
-rw-r--r--drivers/leds/Kconfig29
-rw-r--r--drivers/leds/Makefile3
-rw-r--r--drivers/leds/leds-ariel.c133
-rw-r--r--drivers/leds/leds-aw2013.c436
-rw-r--r--drivers/leds/leds-lm355x.c1
-rw-r--r--drivers/leds/leds-lp3952.c2
-rw-r--r--drivers/leds/leds-lt3593.c1
-rw-r--r--drivers/leds/leds-netxbig.c148
-rw-r--r--drivers/leds/leds-pwm.c16
-rw-r--r--drivers/leds/leds-sgm3140.c320
-rw-r--r--drivers/leds/leds-tca6507.c2
-rw-r--r--drivers/leds/leds-tlc591xx.c5
-rw-r--r--drivers/leds/trigger/ledtrig-timer.c4
13 files changed, 1020 insertions, 80 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index c664d84e1667..ed943140e1fd 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -83,6 +83,17 @@ config LEDS_APU
To compile this driver as a module, choose M here: the
module will be called leds-apu.
+config LEDS_ARIEL
+ tristate "Dell Wyse 3020 status LED support"
+ depends on LEDS_CLASS
+ depends on (MACH_MMP3_DT && MFD_ENE_KB3930) || COMPILE_TEST
+ help
+ This driver adds support for controlling the front panel status
+ LEDs on Dell Wyse 3020 (Ariel) board via the KB3930 Embedded
+ Controller.
+
+ Say Y to if your machine is a Dell Wyse 3020 thin client.
+
config LEDS_AS3645A
tristate "AS3645A and LM3555 LED flash controllers support"
depends on I2C && LEDS_CLASS_FLASH
@@ -92,6 +103,16 @@ config LEDS_AS3645A
controller. V4L2 flash API is provided as well if
CONFIG_V4L2_FLASH_API is enabled.
+config LEDS_AW2013
+ tristate "LED support for Awinic AW2013"
+ depends on LEDS_CLASS && I2C && OF
+ help
+ This option enables support for the AW2013 3-channel
+ LED driver.
+
+ To compile this driver as a module, choose M here: the module
+ will be called leds-aw2013.
+
config LEDS_BCM6328
tristate "LED Support for Broadcom BCM6328"
depends on LEDS_CLASS
@@ -857,6 +878,14 @@ config LEDS_IP30
To compile this driver as a module, choose M here: the module
will be called leds-ip30.
+config LEDS_SGM3140
+ tristate "LED support for the SGM3140"
+ depends on LEDS_CLASS_FLASH
+ depends on V4L2_FLASH_LED_CLASS || !V4L2_FLASH_LED_CLASS
+ help
+ This option enables support for the SGM3140 500mA Buck/Boost Charge
+ Pump LED Driver.
+
comment "LED Triggers"
source "drivers/leds/trigger/Kconfig"
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index 45235d5fb218..d6b8a792c936 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -12,8 +12,10 @@ obj-$(CONFIG_LEDS_AAT1290) += leds-aat1290.o
obj-$(CONFIG_LEDS_ADP5520) += leds-adp5520.o
obj-$(CONFIG_LEDS_AN30259A) += leds-an30259a.o
obj-$(CONFIG_LEDS_APU) += leds-apu.o
+obj-$(CONFIG_LEDS_ARIEL) += leds-ariel.o
obj-$(CONFIG_LEDS_AS3645A) += leds-as3645a.o
obj-$(CONFIG_LEDS_ASIC3) += leds-asic3.o
+obj-$(CONFIG_LEDS_AW2013) += leds-aw2013.o
obj-$(CONFIG_LEDS_BCM6328) += leds-bcm6328.o
obj-$(CONFIG_LEDS_BCM6358) += leds-bcm6358.o
obj-$(CONFIG_LEDS_BD2802) += leds-bd2802.o
@@ -77,6 +79,7 @@ obj-$(CONFIG_LEDS_PWM) += leds-pwm.o
obj-$(CONFIG_LEDS_REGULATOR) += leds-regulator.o
obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
obj-$(CONFIG_LEDS_SC27XX_BLTC) += leds-sc27xx-bltc.o
+obj-$(CONFIG_LEDS_SGM3140) += leds-sgm3140.o
obj-$(CONFIG_LEDS_SUNFIRE) += leds-sunfire.o
obj-$(CONFIG_LEDS_SYSCON) += leds-syscon.o
obj-$(CONFIG_LEDS_TCA6507) += leds-tca6507.o
diff --git a/drivers/leds/leds-ariel.c b/drivers/leds/leds-ariel.c
new file mode 100644
index 000000000000..bb68ba23a7d4
--- /dev/null
+++ b/drivers/leds/leds-ariel.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0-or-later
+/*
+ * Dell Wyse 3020 a.k.a. "Ariel" Embedded Controller LED Driver
+ *
+ * Copyright (C) 2020 Lubomir Rintel
+ */
+
+#include <linux/module.h>
+#include <linux/leds.h>
+#include <linux/regmap.h>
+#include <linux/of_platform.h>
+
+enum ec_index {
+ EC_BLUE_LED = 0x01,
+ EC_AMBER_LED = 0x02,
+ EC_GREEN_LED = 0x03,
+};
+
+enum {
+ EC_LED_OFF = 0x00,
+ EC_LED_STILL = 0x01,
+ EC_LED_FADE = 0x02,
+ EC_LED_BLINK = 0x03,
+};
+
+struct ariel_led {
+ struct regmap *ec_ram;
+ enum ec_index ec_index;
+ struct led_classdev led_cdev;
+};
+
+#define led_cdev_to_ariel_led(c) container_of(c, struct ariel_led, led_cdev)
+
+static enum led_brightness ariel_led_get(struct led_classdev *led_cdev)
+{
+ struct ariel_led *led = led_cdev_to_ariel_led(led_cdev);
+ unsigned int led_status = 0;
+
+ if (regmap_read(led->ec_ram, led->ec_index, &led_status))
+ return LED_OFF;
+
+ if (led_status == EC_LED_STILL)
+ return LED_FULL;
+ else
+ return LED_OFF;
+}
+
+static void ariel_led_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ struct ariel_led *led = led_cdev_to_ariel_led(led_cdev);
+
+ if (brightness == LED_OFF)
+ regmap_write(led->ec_ram, led->ec_index, EC_LED_OFF);
+ else
+ regmap_write(led->ec_ram, led->ec_index, EC_LED_STILL);
+}
+
+static int ariel_blink_set(struct led_classdev *led_cdev,
+ unsigned long *delay_on, unsigned long *delay_off)
+{
+ struct ariel_led *led = led_cdev_to_ariel_led(led_cdev);
+
+ if (*delay_on == 0 && *delay_off == 0)
+ return -EINVAL;
+
+ if (*delay_on == 0) {
+ regmap_write(led->ec_ram, led->ec_index, EC_LED_OFF);
+ } else if (*delay_off == 0) {
+ regmap_write(led->ec_ram, led->ec_index, EC_LED_STILL);
+ } else {
+ *delay_on = 500;
+ *delay_off = 500;
+ regmap_write(led->ec_ram, led->ec_index, EC_LED_BLINK);
+ }
+
+ return 0;
+}
+
+#define NLEDS 3
+
+static int ariel_led_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct ariel_led *leds;
+ struct regmap *ec_ram;
+ int ret;
+ int i;
+
+ ec_ram = dev_get_regmap(dev->parent, "ec_ram");
+ if (!ec_ram)
+ return -ENODEV;
+
+ leds = devm_kcalloc(dev, NLEDS, sizeof(*leds), GFP_KERNEL);
+ if (!leds)
+ return -ENOMEM;
+
+ leds[0].ec_index = EC_BLUE_LED;
+ leds[0].led_cdev.name = "blue:power",
+ leds[0].led_cdev.default_trigger = "default-on";
+
+ leds[1].ec_index = EC_AMBER_LED;
+ leds[1].led_cdev.name = "amber:status",
+
+ leds[2].ec_index = EC_GREEN_LED;
+ leds[2].led_cdev.name = "green:status",
+ leds[2].led_cdev.default_trigger = "default-on";
+
+ for (i = 0; i < NLEDS; i++) {
+ leds[i].ec_ram = ec_ram;
+ leds[i].led_cdev.brightness_get = ariel_led_get;
+ leds[i].led_cdev.brightness_set = ariel_led_set;
+ leds[i].led_cdev.blink_set = ariel_blink_set;
+
+ ret = devm_led_classdev_register(dev, &leds[i].led_cdev);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct platform_driver ariel_led_driver = {
+ .probe = ariel_led_probe,
+ .driver = {
+ .name = "dell-wyse-ariel-led",
+ },
+};
+module_platform_driver(ariel_led_driver);
+
+MODULE_AUTHOR("Lubomir Rintel <lkundrak@v3.sk>");
+MODULE_DESCRIPTION("Dell Wyse 3020 Status LEDs Driver");
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/drivers/leds/leds-aw2013.c b/drivers/leds/leds-aw2013.c
new file mode 100644
index 000000000000..d709cc1f949e
--- /dev/null
+++ b/drivers/leds/leds-aw2013.c
@@ -0,0 +1,436 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Driver for Awinic AW2013 3-channel LED driver
+
+#include <linux/i2c.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/regulator/consumer.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+
+#define AW2013_MAX_LEDS 3
+
+/* Reset and ID register */
+#define AW2013_RSTR 0x00
+#define AW2013_RSTR_RESET 0x55
+#define AW2013_RSTR_CHIP_ID 0x33
+
+/* Global control register */
+#define AW2013_GCR 0x01
+#define AW2013_GCR_ENABLE BIT(0)
+
+/* LED channel enable register */
+#define AW2013_LCTR 0x30
+#define AW2013_LCTR_LE(x) BIT((x))
+
+/* LED channel control registers */
+#define AW2013_LCFG(x) (0x31 + (x))
+#define AW2013_LCFG_IMAX_MASK (BIT(0) | BIT(1)) // Should be 0-3
+#define AW2013_LCFG_MD BIT(4)
+#define AW2013_LCFG_FI BIT(5)
+#define AW2013_LCFG_FO BIT(6)
+
+/* LED channel PWM registers */
+#define AW2013_REG_PWM(x) (0x34 + (x))
+
+/* LED channel timing registers */
+#define AW2013_LEDT0(x) (0x37 + (x) * 3)
+#define AW2013_LEDT0_T1(x) ((x) << 4) // Should be 0-7
+#define AW2013_LEDT0_T2(x) (x) // Should be 0-5
+
+#define AW2013_LEDT1(x) (0x38 + (x) * 3)
+#define AW2013_LEDT1_T3(x) ((x) << 4) // Should be 0-7
+#define AW2013_LEDT1_T4(x) (x) // Should be 0-7
+
+#define AW2013_LEDT2(x) (0x39 + (x) * 3)
+#define AW2013_LEDT2_T0(x) ((x) << 4) // Should be 0-8
+#define AW2013_LEDT2_REPEAT(x) (x) // Should be 0-15
+
+#define AW2013_REG_MAX 0x77
+
+#define AW2013_TIME_STEP 130 /* ms */
+
+struct aw2013;
+
+struct aw2013_led {
+ struct aw2013 *chip;
+ struct led_classdev cdev;
+ u32 num;
+ unsigned int imax;
+};
+
+struct aw2013 {
+ struct mutex mutex; /* held when writing to registers */
+ struct regulator *vcc_regulator;
+ struct i2c_client *client;
+ struct aw2013_led leds[AW2013_MAX_LEDS];
+ struct regmap *regmap;
+ int num_leds;
+ bool enabled;
+};
+
+static int aw2013_chip_init(struct aw2013 *chip)
+{
+ int i, ret;
+
+ ret = regmap_write(chip->regmap, AW2013_GCR, AW2013_GCR_ENABLE);
+ if (ret) {
+ dev_err(&chip->client->dev, "Failed to enable the chip: %d\n",
+ ret);
+ return ret;
+ }
+
+ for (i = 0; i < chip->num_leds; i++) {
+ ret = regmap_update_bits(chip->regmap,
+ AW2013_LCFG(chip->leds[i].num),
+ AW2013_LCFG_IMAX_MASK,
+ chip->leds[i].imax);
+ if (ret) {
+ dev_err(&chip->client->dev,
+ "Failed to set maximum current for led %d: %d\n",
+ chip->leds[i].num, ret);
+ return ret;
+ }
+ }
+
+ return ret;
+}
+
+static void aw2013_chip_disable(struct aw2013 *chip)
+{
+ int ret;
+
+ if (!chip->enabled)
+ return;
+
+ regmap_write(chip->regmap, AW2013_GCR, 0);
+
+ ret = regulator_disable(chip->vcc_regulator);
+ if (ret) {
+ dev_err(&chip->client->dev,
+ "Failed to disable regulator: %d\n", ret);
+ return;
+ }
+
+ chip->enabled = false;
+}
+
+static int aw2013_chip_enable(struct aw2013 *chip)
+{
+ int ret;
+
+ if (chip->enabled)
+ return 0;
+
+ ret = regulator_enable(chip->vcc_regulator);
+ if (ret) {
+ dev_err(&chip->client->dev,
+ "Failed to enable regulator: %d\n", ret);
+ return ret;
+ }
+ chip->enabled = true;
+
+ ret = aw2013_chip_init(chip);
+ if (ret)
+ aw2013_chip_disable(chip);
+
+ return ret;
+}
+
+static bool aw2013_chip_in_use(struct aw2013 *chip)
+{
+ int i;
+
+ for (i = 0; i < chip->num_leds; i++)
+ if (chip->leds[i].cdev.brightness)
+ return true;
+
+ return false;
+}
+
+static int aw2013_brightness_set(struct led_classdev *cdev,
+ enum led_brightness brightness)
+{
+ struct aw2013_led *led = container_of(cdev, struct aw2013_led, cdev);
+ int ret, num;
+
+ mutex_lock(&led->chip->mutex);
+
+ if (aw2013_chip_in_use(led->chip)) {
+ ret = aw2013_chip_enable(led->chip);
+ if (ret)
+ goto error;
+ }
+
+ num = led->num;
+
+ ret = regmap_write(led->chip->regmap, AW2013_REG_PWM(num), brightness);
+ if (ret)
+ goto error;
+
+ if (brightness) {
+ ret = regmap_update_bits(led->chip->regmap, AW2013_LCTR,
+ AW2013_LCTR_LE(num), 0xFF);
+ } else {
+ ret = regmap_update_bits(led->chip->regmap, AW2013_LCTR,
+ AW2013_LCTR_LE(num), 0);
+ if (ret)
+ goto error;
+ ret = regmap_update_bits(led->chip->regmap, AW2013_LCFG(num),
+ AW2013_LCFG_MD, 0);
+ }
+ if (ret)
+ goto error;
+
+ if (!aw2013_chip_in_use(led->chip))
+ aw2013_chip_disable(led->chip);
+
+error:
+ mutex_unlock(&led->chip->mutex);
+
+ return ret;
+}
+
+static int aw2013_blink_set(struct led_classdev *cdev,
+ unsigned long *delay_on, unsigned long *delay_off)
+{
+ struct aw2013_led *led = container_of(cdev, struct aw2013_led, cdev);
+ int ret, num = led->num;
+ unsigned long off = 0, on = 0;
+
+ /* If no blink specified, default to 1 Hz. */
+ if (!*delay_off && !*delay_on) {
+ *delay_off = 500;
+ *delay_on = 500;
+ }
+
+ if (!led->cdev.brightness) {
+ led->cdev.brightness = LED_FULL;
+ ret = aw2013_brightness_set(&led->cdev, led->cdev.brightness);
+ if (ret)
+ return ret;
+ }
+
+ /* Never on - just set to off */
+ if (!*delay_on) {
+ led->cdev.brightness = LED_OFF;
+ return aw2013_brightness_set(&led->cdev, LED_OFF);
+ }
+
+ mutex_lock(&led->chip->mutex);
+
+ /* Never off - brightness is already set, disable blinking */
+ if (!*delay_off) {
+ ret = regmap_update_bits(led->chip->regmap, AW2013_LCFG(num),
+ AW2013_LCFG_MD, 0);
+ goto out;
+ }
+
+ /* Convert into values the HW will understand. */
+ off = min(5, ilog2((*delay_off - 1) / AW2013_TIME_STEP) + 1);
+ on = min(7, ilog2((*delay_on - 1) / AW2013_TIME_STEP) + 1);
+
+ *delay_off = BIT(off) * AW2013_TIME_STEP;
+ *delay_on = BIT(on) * AW2013_TIME_STEP;
+
+ /* Set timings */
+ ret = regmap_write(led->chip->regmap,
+ AW2013_LEDT0(num), AW2013_LEDT0_T2(on));
+ if (ret)
+ goto out;
+ ret = regmap_write(led->chip->regmap,
+ AW2013_LEDT1(num), AW2013_LEDT1_T4(off));
+ if (ret)
+ goto out;
+
+ /* Finally, enable the LED */
+ ret = regmap_update_bits(led->chip->regmap, AW2013_LCFG(num),
+ AW2013_LCFG_MD, 0xFF);
+ if (ret)
+ goto out;
+
+ ret = regmap_update_bits(led->chip->regmap, AW2013_LCTR,
+ AW2013_LCTR_LE(num), 0xFF);
+
+out:
+ mutex_unlock(&led->chip->mutex);
+
+ return ret;
+}
+
+static int aw2013_probe_dt(struct aw2013 *chip)
+{
+ struct device_node *np = chip->client->dev.of_node, *child;
+ int count, ret = 0, i = 0;
+ struct aw2013_led *led;
+
+ count = of_get_child_count(np);
+ if (!count || count > AW2013_MAX_LEDS)
+ return -EINVAL;
+
+ regmap_write(chip->regmap, AW2013_RSTR, AW2013_RSTR_RESET);
+
+ for_each_available_child_of_node(np, child) {
+ struct led_init_data init_data = {};
+ u32 source;
+ u32 imax;
+
+ ret = of_property_read_u32(child, "reg", &source);
+ if (ret != 0 || source >= AW2013_MAX_LEDS) {
+ dev_err(&chip->client->dev,
+ "Couldn't read LED address: %d\n", ret);
+ count--;
+ continue;
+ }
+
+ led = &chip->leds[i];
+ led->num = source;
+ led->chip = chip;
+ init_data.fwnode = of_fwnode_handle(child);
+
+ if (!of_property_read_u32(child, "led-max-microamp", &imax)) {
+ led->imax = min_t(u32, imax / 5000, 3);
+ } else {
+ led->imax = 1; // 5mA
+ dev_info(&chip->client->dev,
+ "DT property led-max-microamp is missing\n");
+ }
+
+ of_property_read_string(child, "linux,default-trigger",
+ &led->cdev.default_trigger);
+
+ led->cdev.brightness_set_blocking = aw2013_brightness_set;
+ led->cdev.blink_set = aw2013_blink_set;
+
+ ret = devm_led_classdev_register_ext(&chip->client->dev,
+ &led->cdev, &init_data);
+ if (ret < 0)
+ return ret;
+
+ i++;
+ }
+
+ if (!count)
+ return -EINVAL;
+
+ chip->num_leds = i;
+
+ return 0;
+}
+
+static const struct regmap_config aw2013_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = AW2013_REG_MAX,
+};
+
+static int aw2013_probe(struct i2c_client *client)
+{
+ struct aw2013 *chip;
+ int ret;
+ unsigned int chipid;
+
+ chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ mutex_init(&chip->mutex);
+ mutex_lock(&chip->mutex);
+
+ chip->client = client;
+ i2c_set_clientdata(client, chip);
+
+ chip->regmap = devm_regmap_init_i2c(client, &aw2013_regmap_config);
+ if (IS_ERR(chip->regmap)) {
+ ret = PTR_ERR(chip->regmap);
+ dev_err(&client->dev, "Failed to allocate register map: %d\n",
+ ret);
+ goto error;
+ }
+
+ chip->vcc_regulator = devm_regulator_get(&client->dev, "vcc");
+ ret = PTR_ERR_OR_ZERO(chip->vcc_regulator);
+ if (ret) {
+ if (ret != -EPROBE_DEFER)
+ dev_err(&client->dev,
+ "Failed to request regulator: %d\n", ret);
+ goto error;
+ }
+
+ ret = regulator_enable(chip->vcc_regulator);
+ if (ret) {
+ dev_err(&client->dev,
+ "Failed to enable regulator: %d\n", ret);
+ goto error;
+ }
+
+ ret = regmap_read(chip->regmap, AW2013_RSTR, &chipid);
+ if (ret) {
+ dev_err(&client->dev, "Failed to read chip ID: %d\n",
+ ret);
+ goto error_reg;
+ }
+
+ if (chipid != AW2013_RSTR_CHIP_ID) {
+ dev_err(&client->dev, "Chip reported wrong ID: %x\n",
+ chipid);
+ ret = -ENODEV;
+ goto error_reg;
+ }
+
+ ret = aw2013_probe_dt(chip);
+ if (ret < 0)
+ goto error_reg;
+
+ ret = regulator_disable(chip->vcc_regulator);
+ if (ret) {
+ dev_err(&client->dev,
+ "Failed to disable regulator: %d\n", ret);
+ goto error;
+ }
+
+ mutex_unlock(&chip->mutex);
+
+ return 0;
+
+error_reg:
+ regulator_disable(chip->vcc_regulator);
+
+error:
+ mutex_destroy(&chip->mutex);
+ return ret;
+}
+
+static int aw2013_remove(struct i2c_client *client)
+{
+ struct aw2013 *chip = i2c_get_clientdata(client);
+
+ aw2013_chip_disable(chip);
+
+ mutex_destroy(&chip->mutex);
+
+ return 0;
+}
+
+static const struct of_device_id aw2013_match_table[] = {
+ { .compatible = "awinic,aw2013", },
+ { /* sentinel */ },
+};
+
+MODULE_DEVICE_TABLE(of, aw2013_match_table);
+
+static struct i2c_driver aw2013_driver = {
+ .driver = {
+ .name = "leds-aw2013",
+ .of_match_table = of_match_ptr(aw2013_match_table),
+ },
+ .probe_new = aw2013_probe,
+ .remove = aw2013_remove,
+};
+
+module_i2c_driver(aw2013_driver);
+
+MODULE_AUTHOR("Nikita Travkin <nikitos.tr@gmail.com>");
+MODULE_DESCRIPTION("AW2013 LED driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/leds/leds-lm355x.c b/drivers/leds/leds-lm355x.c
index a5abb499574b..11ce05249751 100644
--- a/drivers/leds/leds-lm355x.c
+++ b/drivers/leds/leds-lm355x.c
@@ -7,7 +7,6 @@
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/i2c.h>
-#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
diff --git a/drivers/leds/leds-lp3952.c b/drivers/leds/leds-lp3952.c
index 4e4e542774cb..6ee9131fbf25 100644
--- a/drivers/leds/leds-lp3952.c
+++ b/drivers/leds/leds-lp3952.c
@@ -7,7 +7,7 @@
*/
#include <linux/delay.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/io.h>
#include <linux/kernel.h>
diff --git a/drivers/leds/leds-lt3593.c b/drivers/leds/leds-lt3593.c
index c94995f0daa2..9079850e6ea4 100644
--- a/drivers/leds/leds-lt3593.c
+++ b/drivers/leds/leds-lt3593.c
@@ -5,7 +5,6 @@
#include <linux/platform_device.h>
#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>
diff --git a/drivers/leds/leds-netxbig.c b/drivers/leds/leds-netxbig.c
index 14ef4ccdda3a..ceceeb6a0e96 100644
--- a/drivers/leds/leds-netxbig.c
+++ b/drivers/leds/leds-netxbig.c
@@ -12,16 +12,17 @@
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/platform_device.h>
-#include <linux/gpio.h>
-#include <linux/of_gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/leds.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
struct netxbig_gpio_ext {
- unsigned int *addr;
+ struct gpio_desc **addr;
int num_addr;
- unsigned int *data;
+ struct gpio_desc **data;
int num_data;
- unsigned int enable;
+ struct gpio_desc *enable;
};
enum netxbig_led_mode {
@@ -69,7 +70,7 @@ static void gpio_ext_set_addr(struct netxbig_gpio_ext *gpio_ext, int addr)
int pin;
for (pin = 0; pin < gpio_ext->num_addr; pin++)
- gpio_set_value(gpio_ext->addr[pin], (addr >> pin) & 1);
+ gpiod_set_value(gpio_ext->addr[pin], (addr >> pin) & 1);
}
static void gpio_ext_set_data(struct netxbig_gpio_ext *gpio_ext, int data)
@@ -77,14 +78,14 @@ static void gpio_ext_set_data(struct netxbig_gpio_ext *gpio_ext, int data)
int pin;
for (pin = 0; pin < gpio_ext->num_data; pin++)
- gpio_set_value(gpio_ext->data[pin], (data >> pin) & 1);
+ gpiod_set_value(gpio_ext->data[pin], (data >> pin) & 1);
}
static void gpio_ext_enable_select(struct netxbig_gpio_ext *gpio_ext)
{
/* Enable select is done on the raising edge. */
- gpio_set_value(gpio_ext->enable, 0);
- gpio_set_value(gpio_ext->enable, 1);
+ gpiod_set_value(gpio_ext->enable, 0);
+ gpiod_set_value(gpio_ext->enable, 1);
}
static void gpio_ext_set_value(struct netxbig_gpio_ext *gpio_ext,
@@ -99,41 +100,6 @@ static void gpio_ext_set_value(struct netxbig_gpio_ext *gpio_ext,
spin_unlock_irqrestore(&gpio_ext_lock, flags);
}
-static int gpio_ext_init(struct platform_device *pdev,
- struct netxbig_gpio_ext *gpio_ext)
-{
- int err;
- int i;
-
- if (unlikely(!gpio_ext))
- return -EINVAL;
-
- /* Configure address GPIOs. */
- for (i = 0; i < gpio_ext->num_addr; i++) {
- err = devm_gpio_request_one(&pdev->dev, gpio_ext->addr[i],
- GPIOF_OUT_INIT_LOW,
- "GPIO extension addr");
- if (err)
- return err;
- }
- /* Configure data GPIOs. */
- for (i = 0; i < gpio_ext->num_data; i++) {
- err = devm_gpio_request_one(&pdev->dev, gpio_ext->data[i],
- GPIOF_OUT_INIT_LOW,
- "GPIO extension data");
- if (err)
- return err;
- }
- /* Configure "enable select" GPIO. */
- err = devm_gpio_request_one(&pdev->dev, gpio_ext->enable,
- GPIOF_OUT_INIT_LOW,
- "GPIO extension enable");
- if (err)
- return err;
-
- return 0;
-}
-
/*
* Class LED driver.
*/
@@ -347,15 +313,47 @@ static int create_netxbig_led(struct platform_device *pdev,
return devm_led_classdev_register(&pdev->dev, &led_dat->cdev);
}
-static int gpio_ext_get_of_pdata(struct device *dev, struct device_node *np,
- struct netxbig_gpio_ext *gpio_ext)
+/**
+ * netxbig_gpio_ext_remove() - Clean up GPIO extension data
+ * @data: managed resource data to clean up
+ *
+ * Since we pick GPIO descriptors from another device than the device our
+ * driver is probing to, we need to register a specific callback to free
+ * these up using managed resources.
+ */
+static void netxbig_gpio_ext_remove(void *data)
+{
+ struct netxbig_gpio_ext *gpio_ext = data;
+ int i;
+
+ for (i = 0; i < gpio_ext->num_addr; i++)
+ gpiod_put(gpio_ext->addr[i]);
+ for (i = 0; i < gpio_ext->num_data; i++)
+ gpiod_put(gpio_ext->data[i]);
+ gpiod_put(gpio_ext->enable);
+}
+
+/**
+ * netxbig_gpio_ext_get() - Obtain GPIO extension device data
+ * @dev: main LED device
+ * @gpio_ext_dev: the GPIO extension device
+ * @gpio_ext: the data structure holding the GPIO extension data
+ *
+ * This function walks the subdevice that only contain GPIO line
+ * handles in the device tree and obtains the GPIO descriptors from that
+ * device.
+ */
+static int netxbig_gpio_ext_get(struct device *dev,
+ struct device *gpio_ext_dev,
+ struct netxbig_gpio_ext *gpio_ext)
{
- int *addr, *data;
+ struct gpio_desc **addr, **data;
int num_addr, num_data;
+ struct gpio_desc *gpiod;
int ret;
int i;
- ret = of_gpio_named_count(np, "addr-gpios");
+ ret = gpiod_count(gpio_ext_dev, "addr");
if (ret < 0) {
dev_err(dev,
"Failed to count GPIOs in DT property addr-gpios\n");
@@ -366,16 +364,25 @@ static int gpio_ext_get_of_pdata(struct device *dev, struct device_node *np,
if (!addr)
return -ENOMEM;
+ /*
+ * We cannot use devm_ managed resources with these GPIO descriptors
+ * since they are associated with the "GPIO extension device" which
+ * does not probe any driver. The device tree parser will however
+ * populate a platform device for it so we can anyway obtain the
+ * GPIO descriptors from the device.
+ */
for (i = 0; i < num_addr; i++) {
- ret = of_get_named_gpio(np, "addr-gpios", i);
- if (ret < 0)
- return ret;
- addr[i] = ret;
+ gpiod = gpiod_get_index(gpio_ext_dev, "addr", i,
+ GPIOD_OUT_LOW);
+ if (IS_ERR(gpiod))
+ return PTR_ERR(gpiod);
+ gpiod_set_consumer_name(gpiod, "GPIO extension addr");
+ addr[i] = gpiod;
}
gpio_ext->addr = addr;
gpio_ext->num_addr = num_addr;
- ret = of_gpio_named_count(np, "data-gpios");
+ ret = gpiod_count(gpio_ext_dev, "data");
if (ret < 0) {
dev_err(dev,
"Failed to count GPIOs in DT property data-gpios\n");
@@ -387,23 +394,26 @@ static int gpio_ext_get_of_pdata(struct device *dev, struct device_node *np,
return -ENOMEM;
for (i = 0; i < num_data; i++) {
- ret = of_get_named_gpio(np, "data-gpios", i);
- if (ret < 0)
- return ret;
- data[i] = ret;
+ gpiod = gpiod_get_index(gpio_ext_dev, "data", i,
+ GPIOD_OUT_LOW);
+ if (IS_ERR(gpiod))
+ return PTR_ERR(gpiod);
+ gpiod_set_consumer_name(gpiod, "GPIO extension data");
+ data[i] = gpiod;
}
gpio_ext->data = data;
gpio_ext->num_data = num_data;
- ret = of_get_named_gpio(np, "enable-gpio", 0);
- if (ret < 0) {
+ gpiod = gpiod_get(gpio_ext_dev, "enable", GPIOD_OUT_LOW);
+ if (IS_ERR(gpiod)) {
dev_err(dev,
"Failed to get GPIO from DT property enable-gpio\n");
- return ret;
+ return PTR_ERR(gpiod);
}
- gpio_ext->enable = ret;
+ gpiod_set_consumer_name(gpiod, "GPIO extension enable");
+ gpio_ext->enable = gpiod;
- return 0;
+ return devm_add_action_or_reset(dev, netxbig_gpio_ext_remove, gpio_ext);
}
static int netxbig_leds_get_of_pdata(struct device *dev,
@@ -411,6 +421,8 @@ static int netxbig_leds_get_of_pdata(struct device *dev,
{
struct device_node *np = dev->of_node;
struct device_node *gpio_ext_np;
+ struct platform_device *gpio_ext_pdev;
+ struct device *gpio_ext_dev;
struct device_node *child;
struct netxbig_gpio_ext *gpio_ext;
struct netxbig_led_timer *timers;
@@ -426,13 +438,19 @@ static int netxbig_leds_get_of_pdata(struct device *dev,
dev_err(dev, "Failed to get DT handle gpio-ext\n");
return -EINVAL;
}
+ gpio_ext_pdev = of_find_device_by_node(gpio_ext_np);
+ if (!gpio_ext_pdev) {
+ dev_err(dev, "Failed to find platform device for gpio-ext\n");
+ return -ENODEV;
+ }
+ gpio_ext_dev = &gpio_ext_pdev->dev;
gpio_ext = devm_kzalloc(dev, sizeof(*gpio_ext), GFP_KERNEL);
if (!gpio_ext) {
of_node_put(gpio_ext_np);
return -ENOMEM;
}
- ret = gpio_ext_get_of_pdata(dev, gpio_ext_np, gpio_ext);
+ ret = netxbig_gpio_ext_get(dev, gpio_ext_dev, gpio_ext);
of_node_put(gpio_ext_np);
if (ret)
return ret;
@@ -585,10 +603,6 @@ static int netxbig_led_probe(struct platform_device *pdev)
if (!leds_data)
return -ENOMEM;
- ret = gpio_ext_init(pdev, pdata->gpio_ext);
- if (ret < 0)
- return ret;
-
for (i = 0; i < pdata->num_leds; i++) {
ret = create_netxbig_led(pdev, pdata,
&leds_data[i], &pdata->leds[i]);
diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c
index 6c8a724aac51..ef7b91bd2064 100644
--- a/drivers/leds/leds-pwm.c
+++ b/drivers/leds/leds-pwm.c
@@ -91,15 +91,21 @@ static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv,
pwm_init_state(led_data->pwm, &led_data->pwmstate);
ret = devm_led_classdev_register(dev, &led_data->cdev);
- if (ret == 0) {
- priv->num_leds++;
- led_pwm_set(&led_data->cdev, led_data->cdev.brightness);
- } else {
+ if (ret) {
dev_err(dev, "failed to register PWM led for %s: %d\n",
led->name, ret);
+ return ret;
}
- return ret;
+ ret = led_pwm_set(&led_data->cdev, led_data->cdev.brightness);
+ if (ret) {
+ dev_err(dev, "failed to set led PWM value for %s: %d",
+ led->name, ret);
+ return ret;
+ }
+
+ priv->num_leds++;
+ return 0;
}
static int led_pwm_create_fwnode(struct device *dev, struct led_pwm_priv *priv)
diff --git a/drivers/leds/leds-sgm3140.c b/drivers/leds/leds-sgm3140.c
new file mode 100644
index 000000000000..c494b934ae09
--- /dev/null
+++ b/drivers/leds/leds-sgm3140.c
@@ -0,0 +1,320 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2020 Luca Weiss <luca@z3ntu.xyz>
+
+#include <linux/gpio/consumer.h>
+#include <linux/led-class-flash.h>
+#include <linux/module.h>
+#include <linux/regulator/consumer.h>
+#include <linux/platform_device.h>
+
+#include <media/v4l2-flash-led-class.h>
+
+#define FLASH_TIMEOUT_DEFAULT 250000U /* 250ms */
+#define FLASH_MAX_TIMEOUT_DEFAULT 300000U /* 300ms */
+
+struct sgm3140 {
+ struct led_classdev_flash fled_cdev;
+ struct v4l2_flash *v4l2_flash;
+
+ struct timer_list powerdown_timer;
+
+ struct gpio_desc *flash_gpio;
+ struct gpio_desc *enable_gpio;
+ struct regulator *vin_regulator;
+
+ bool enabled;
+
+ /* current timeout in us */
+ u32 timeout;
+ /* maximum timeout in us */
+ u32 max_timeout;
+};
+
+static struct sgm3140 *flcdev_to_sgm3140(struct led_classdev_flash *flcdev)
+{
+ return container_of(flcdev, struct sgm3140, fled_cdev);
+}
+
+static int sgm3140_strobe_set(struct led_classdev_flash *fled_cdev, bool state)
+{
+ struct sgm3140 *priv = flcdev_to_sgm3140(fled_cdev);
+ int ret;
+
+ if (priv->enabled == state)
+ return 0;
+
+ if (state) {
+ ret = regulator_enable(priv->vin_regulator);
+ if (ret) {
+ dev_err(fled_cdev->led_cdev.dev,
+ "failed to enable regulator: %d\n", ret);
+ return ret;
+ }
+ gpiod_set_value_cansleep(priv->flash_gpio, 1);
+ gpiod_set_value_cansleep(priv->enable_gpio, 1);
+ mod_timer(&priv->powerdown_timer,
+ jiffies + usecs_to_jiffies(priv->timeout));
+ } else {
+ del_timer_sync(&priv->powerdown_timer);
+ gpiod_set_value_cansleep(priv->enable_gpio, 0);
+ gpiod_set_value_cansleep(priv->flash_gpio, 0);
+ ret = regulator_disable(priv->vin_regulator);
+ if (ret) {
+ dev_err(fled_cdev->led_cdev.dev,
+ "failed to disable regulator: %d\n", ret);
+ return ret;
+ }
+ }
+
+ priv->enabled = state;
+
+ return 0;
+}
+
+static int sgm3140_strobe_get(struct led_classdev_flash *fled_cdev, bool *state)
+{
+ struct sgm3140 *priv = flcdev_to_sgm3140(fled_cdev);
+
+ *state = timer_pending(&priv->powerdown_timer);
+
+ return 0;
+}
+
+static int sgm3140_timeout_set(struct led_classdev_flash *fled_cdev,
+ u32 timeout)
+{
+ struct sgm3140 *priv = flcdev_to_sgm3140(fled_cdev);
+
+ priv->timeout = timeout;
+
+ return 0;
+}
+
+static const struct led_flash_ops sgm3140_flash_ops = {
+ .strobe_set = sgm3140_strobe_set,
+ .strobe_get = sgm3140_strobe_get,
+ .timeout_set = sgm3140_timeout_set,
+};
+
+static int sgm3140_brightness_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ struct led_classdev_flash *fled_cdev = lcdev_to_flcdev(led_cdev);
+ struct sgm3140 *priv = flcdev_to_sgm3140(fled_cdev);
+ bool enable = brightness == LED_ON;
+ int ret;
+
+ if (priv->enabled == enable)
+ return 0;
+
+ if (enable) {
+ ret = regulator_enable(priv->vin_regulator);
+ if (ret) {
+ dev_err(led_cdev->dev,
+ "failed to enable regulator: %d\n", ret);
+ return ret;
+ }
+ gpiod_set_value_cansleep(priv->enable_gpio, 1);
+ } else {
+ gpiod_set_value_cansleep(priv->enable_gpio, 0);
+ ret = regulator_disable(priv->vin_regulator);
+ if (ret) {
+ dev_err(led_cdev->dev,
+ "failed to disable regulator: %d\n", ret);
+ return ret;
+ }
+ }
+
+ priv->enabled = enable;
+
+ return 0;
+}
+
+static void sgm3140_powerdown_timer(struct timer_list *t)
+{
+ struct sgm3140 *priv = from_timer(priv, t, powerdown_timer);
+
+ gpiod_set_value(priv->enable_gpio, 0);
+ gpiod_set_value(priv->flash_gpio, 0);
+ regulator_disable(priv->vin_regulator);
+
+ priv->enabled = false;
+}
+
+static void sgm3140_init_flash_timeout(struct sgm3140 *priv)
+{
+ struct led_classdev_flash *fled_cdev = &priv->fled_cdev;
+ struct led_flash_setting *s;
+
+ /* Init flash timeout setting */
+ s = &fled_cdev->timeout;
+ s->min = 1;
+ s->max = priv->max_timeout;
+ s->step = 1;
+ s->val = FLASH_TIMEOUT_DEFAULT;
+}
+
+#if IS_ENABLED(CONFIG_V4L2_FLASH_LED_CLASS)
+static void sgm3140_init_v4l2_flash_config(struct sgm3140 *priv,
+ struct v4l2_flash_config *v4l2_sd_cfg)
+{
+ struct led_classdev *led_cdev = &priv->fled_cdev.led_cdev;
+ struct led_flash_setting *s;
+
+ strscpy(v4l2_sd_cfg->dev_name, led_cdev->dev->kobj.name,
+ sizeof(v4l2_sd_cfg->dev_name));
+
+ /* Init flash intensity setting */
+ s = &v4l2_sd_cfg->intensity;
+ s->min = 0;
+ s->max = 1;
+ s->step = 1;
+ s->val = 1;
+}
+
+#else
+static void sgm3140_init_v4l2_flash_config(struct sgm3140 *priv,
+ struct v4l2_flash_config *v4l2_sd_cfg)
+{
+}
+#endif
+
+static int sgm3140_probe(struct platform_device *pdev)
+{
+ struct sgm3140 *priv;
+ struct led_classdev *led_cdev;
+ struct led_classdev_flash *fled_cdev;
+ struct led_init_data init_data = {};
+ struct fwnode_handle *child_node;
+ struct v4l2_flash_config v4l2_sd_cfg = {};
+ int ret;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->flash_gpio = devm_gpiod_get(&pdev->dev, "flash", GPIOD_OUT_LOW);
+ ret = PTR_ERR_OR_ZERO(priv->flash_gpio);
+ if (ret) {
+ if (ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev,
+ "Failed to request flash gpio: %d\n", ret);
+ return ret;
+ }
+
+ priv->enable_gpio = devm_gpiod_get(&pdev->dev, "enable", GPIOD_OUT_LOW);
+ ret = PTR_ERR_OR_ZERO(priv->enable_gpio);
+ if (ret) {
+ if (ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev,
+ "Failed to request enable gpio: %d\n", ret);
+ return ret;
+ }
+
+ priv->vin_regulator = devm_regulator_get(&pdev->dev, "vin");
+ ret = PTR_ERR_OR_ZERO(priv->vin_regulator);
+ if (ret) {
+ if (ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev,
+ "Failed to request regulator: %d\n", ret);
+ return ret;
+ }
+
+ child_node = fwnode_get_next_available_child_node(pdev->dev.fwnode,
+ NULL);
+ if (!child_node) {
+ dev_err(&pdev->dev,
+ "No fwnode child node found for connected LED.\n");
+ return -EINVAL;
+ }
+
+ ret = fwnode_property_read_u32(child_node, "flash-max-timeout-us",
+ &priv->max_timeout);
+ if (ret) {
+ priv->max_timeout = FLASH_MAX_TIMEOUT_DEFAULT;
+ dev_warn(&pdev->dev,
+ "flash-max-timeout-us property missing\n");
+ }
+
+ /*
+ * Set default timeout to FLASH_DEFAULT_TIMEOUT except if max_timeout
+ * from DT is lower.
+ */
+ priv->timeout = min(priv->max_timeout, FLASH_TIMEOUT_DEFAULT);
+
+ timer_setup(&priv->powerdown_timer, sgm3140_powerdown_timer, 0);
+
+ fled_cdev = &priv->fled_cdev;
+ led_cdev = &fled_cdev->led_cdev;
+
+ fled_cdev->ops = &sgm3140_flash_ops;
+
+ led_cdev->brightness_set_blocking = sgm3140_brightness_set;
+ led_cdev->max_brightness = LED_ON;
+ led_cdev->flags |= LED_DEV_CAP_FLASH;
+
+ sgm3140_init_flash_timeout(priv);
+
+ init_data.fwnode = child_node;
+
+ platform_set_drvdata(pdev, priv);
+
+ /* Register in the LED subsystem */
+ ret = devm_led_classdev_flash_register_ext(&pdev->dev,
+ fled_cdev, &init_data);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to register flash device: %d\n",
+ ret);
+ goto err;
+ }
+
+ sgm3140_init_v4l2_flash_config(priv, &v4l2_sd_cfg);
+
+ /* Create V4L2 Flash subdev */
+ priv->v4l2_flash = v4l2_flash_init(&pdev->dev,
+ child_node,
+ fled_cdev, NULL,
+ &v4l2_sd_cfg);
+ if (IS_ERR(priv->v4l2_flash)) {
+ ret = PTR_ERR(priv->v4l2_flash);
+ goto err;
+ }
+
+ return ret;
+
+err:
+ fwnode_handle_put(child_node);
+ return ret;
+}
+
+static int sgm3140_remove(struct platform_device *pdev)
+{
+ struct sgm3140 *priv = platform_get_drvdata(pdev);
+
+ del_timer_sync(&priv->powerdown_timer);
+
+ v4l2_flash_release(priv->v4l2_flash);
+
+ return 0;
+}
+
+static const struct of_device_id sgm3140_dt_match[] = {
+ { .compatible = "sgmicro,sgm3140" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, sgm3140_dt_match);
+
+static struct platform_driver sgm3140_driver = {
+ .probe = sgm3140_probe,
+ .remove = sgm3140_remove,
+ .driver = {
+ .name = "sgm3140",
+ .of_match_table = sgm3140_dt_match,
+ },
+};
+
+module_platform_driver(sgm3140_driver);
+
+MODULE_AUTHOR("Luca Weiss <luca@z3ntu.xyz>");
+MODULE_DESCRIPTION("SG Micro SGM3140 charge pump led driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/leds/leds-tca6507.c b/drivers/leds/leds-tca6507.c
index 58be20cae183..1128ac75443c 100644
--- a/drivers/leds/leds-tca6507.c
+++ b/drivers/leds/leds-tca6507.c
@@ -93,7 +93,7 @@
#include <linux/leds.h>
#include <linux/err.h>
#include <linux/i2c.h>
-#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
#include <linux/workqueue.h>
#include <linux/leds-tca6507.h>
#include <linux/of.h>
diff --git a/drivers/leds/leds-tlc591xx.c b/drivers/leds/leds-tlc591xx.c
index a8911ebd30e5..0929f1275814 100644
--- a/drivers/leds/leds-tlc591xx.c
+++ b/drivers/leds/leds-tlc591xx.c
@@ -214,8 +214,9 @@ tlc591xx_probe(struct i2c_client *client,
err = devm_led_classdev_register_ext(dev, &led->ldev,
&init_data);
if (err < 0) {
- dev_err(dev, "couldn't register LED %s\n",
- led->ldev.name);
+ if (err != -EPROBE_DEFER)
+ dev_err(dev, "couldn't register LED %s\n",
+ led->ldev.name);
return err;
}
}
diff --git a/drivers/leds/trigger/ledtrig-timer.c b/drivers/leds/trigger/ledtrig-timer.c
index 34a68604c46c..b4688d1d9d2b 100644
--- a/drivers/leds/trigger/ledtrig-timer.c
+++ b/drivers/leds/trigger/ledtrig-timer.c
@@ -28,7 +28,7 @@ static ssize_t led_delay_on_store(struct device *dev,
{
struct led_classdev *led_cdev = led_trigger_get_led(dev);
unsigned long state;
- ssize_t ret = -EINVAL;
+ ssize_t ret;
ret = kstrtoul(buf, 10, &state);
if (ret)
@@ -53,7 +53,7 @@ static ssize_t led_delay_off_store(struct device *dev,
{
struct led_classdev *led_cdev = led_trigger_get_led(dev);
unsigned long state;
- ssize_t ret = -EINVAL;
+ ssize_t ret;
ret = kstrtoul(buf, 10, &state);
if (ret)
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-20 02:41:11 +0300