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Subject[PATCH leds] leds: regulator: remove driver
Date
The leds-regulator driver only supports the old platform data binding
and no in-tree code uses it. It also seems that no OpenWRT board uses
it.

Remove this driver.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
---
drivers/leds/Kconfig | 7 --
drivers/leds/Makefile | 1 -
drivers/leds/leds-regulator.c | 200 ---------------------------------
include/linux/leds-regulator.h | 42 -------
4 files changed, 250 deletions(-)
delete mode 100644 drivers/leds/leds-regulator.c
delete mode 100644 include/linux/leds-regulator.h

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index a008170e73cd8..905e1ff367f33 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -586,13 +586,6 @@ config LEDS_PWM
help
This option enables support for pwm driven LEDs

-config LEDS_REGULATOR
- tristate "REGULATOR driven LED support"
- depends on LEDS_CLASS
- depends on REGULATOR
- help
- This option enables support for regulator driven LEDs.
-
config LEDS_BD2802
tristate "LED driver for BD2802 RGB LED"
depends on LEDS_CLASS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index 778cb4bb8c520..159878eb95f28 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -78,7 +78,6 @@ obj-$(CONFIG_LEDS_PCA963X) += leds-pca963x.o
obj-$(CONFIG_LEDS_PM8058) += leds-pm8058.o
obj-$(CONFIG_LEDS_POWERNV) += leds-powernv.o
obj-$(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
diff --git a/drivers/leds/leds-regulator.c b/drivers/leds/leds-regulator.c
deleted file mode 100644
index 208c98918433e..0000000000000
--- a/drivers/leds/leds-regulator.c
+++ /dev/null
@@ -1,200 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * leds-regulator.c - LED class driver for regulator driven LEDs.
- *
- * Copyright (C) 2009 Antonio Ospite <ospite@studenti.unina.it>
- *
- * Inspired by leds-wm8350 driver.
- */
-
-#include <linux/module.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/leds.h>
-#include <linux/leds-regulator.h>
-#include <linux/platform_device.h>
-#include <linux/regulator/consumer.h>
-
-#define to_regulator_led(led_cdev) \
- container_of(led_cdev, struct regulator_led, cdev)
-
-struct regulator_led {
- struct led_classdev cdev;
- int enabled;
- struct mutex mutex;
-
- struct regulator *vcc;
-};
-
-static inline int led_regulator_get_max_brightness(struct regulator *supply)
-{
- int ret;
- int voltage = regulator_list_voltage(supply, 0);
-
- if (voltage <= 0)
- return 1;
-
- /* even if regulator can't change voltages,
- * we still assume it can change status
- * and the LED can be turned on and off.
- */
- ret = regulator_set_voltage(supply, voltage, voltage);
- if (ret < 0)
- return 1;
-
- return regulator_count_voltages(supply);
-}
-
-static int led_regulator_get_voltage(struct regulator *supply,
- enum led_brightness brightness)
-{
- if (brightness == 0)
- return -EINVAL;
-
- return regulator_list_voltage(supply, brightness - 1);
-}
-
-
-static void regulator_led_enable(struct regulator_led *led)
-{
- int ret;
-
- if (led->enabled)
- return;
-
- ret = regulator_enable(led->vcc);
- if (ret != 0) {
- dev_err(led->cdev.dev, "Failed to enable vcc: %d\n", ret);
- return;
- }
-
- led->enabled = 1;
-}
-
-static void regulator_led_disable(struct regulator_led *led)
-{
- int ret;
-
- if (!led->enabled)
- return;
-
- ret = regulator_disable(led->vcc);
- if (ret != 0) {
- dev_err(led->cdev.dev, "Failed to disable vcc: %d\n", ret);
- return;
- }
-
- led->enabled = 0;
-}
-
-static int regulator_led_brightness_set(struct led_classdev *led_cdev,
- enum led_brightness value)
-{
- struct regulator_led *led = to_regulator_led(led_cdev);
- int voltage;
- int ret = 0;
-
- mutex_lock(&led->mutex);
-
- if (value == LED_OFF) {
- regulator_led_disable(led);
- goto out;
- }
-
- if (led->cdev.max_brightness > 1) {
- voltage = led_regulator_get_voltage(led->vcc, value);
- dev_dbg(led->cdev.dev, "brightness: %d voltage: %d\n",
- value, voltage);
-
- ret = regulator_set_voltage(led->vcc, voltage, voltage);
- if (ret != 0)
- dev_err(led->cdev.dev, "Failed to set voltage %d: %d\n",
- voltage, ret);
- }
-
- regulator_led_enable(led);
-
-out:
- mutex_unlock(&led->mutex);
- return ret;
-}
-
-static int regulator_led_probe(struct platform_device *pdev)
-{
- struct led_regulator_platform_data *pdata =
- dev_get_platdata(&pdev->dev);
- struct regulator_led *led;
- struct regulator *vcc;
- int ret = 0;
-
- if (pdata == NULL) {
- dev_err(&pdev->dev, "no platform data\n");
- return -ENODEV;
- }
-
- vcc = devm_regulator_get_exclusive(&pdev->dev, "vled");
- if (IS_ERR(vcc)) {
- dev_err(&pdev->dev, "Cannot get vcc for %s\n", pdata->name);
- return PTR_ERR(vcc);
- }
-
- led = devm_kzalloc(&pdev->dev, sizeof(*led), GFP_KERNEL);
- if (led == NULL)
- return -ENOMEM;
-
- led->cdev.max_brightness = led_regulator_get_max_brightness(vcc);
- if (pdata->brightness > led->cdev.max_brightness) {
- dev_err(&pdev->dev, "Invalid default brightness %d\n",
- pdata->brightness);
- return -EINVAL;
- }
-
- led->cdev.brightness_set_blocking = regulator_led_brightness_set;
- led->cdev.name = pdata->name;
- led->cdev.flags |= LED_CORE_SUSPENDRESUME;
- led->vcc = vcc;
-
- /* to handle correctly an already enabled regulator */
- if (regulator_is_enabled(led->vcc))
- led->enabled = 1;
-
- mutex_init(&led->mutex);
-
- platform_set_drvdata(pdev, led);
-
- ret = led_classdev_register(&pdev->dev, &led->cdev);
- if (ret < 0)
- return ret;
-
- /* to expose the default value to userspace */
- led->cdev.brightness = pdata->brightness;
-
- /* Set the default led status */
- regulator_led_brightness_set(&led->cdev, led->cdev.brightness);
-
- return 0;
-}
-
-static int regulator_led_remove(struct platform_device *pdev)
-{
- struct regulator_led *led = platform_get_drvdata(pdev);
-
- led_classdev_unregister(&led->cdev);
- regulator_led_disable(led);
- return 0;
-}
-
-static struct platform_driver regulator_led_driver = {
- .driver = {
- .name = "leds-regulator",
- },
- .probe = regulator_led_probe,
- .remove = regulator_led_remove,
-};
-
-module_platform_driver(regulator_led_driver);
-
-MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
-MODULE_DESCRIPTION("Regulator driven LED driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:leds-regulator");
diff --git a/include/linux/leds-regulator.h b/include/linux/leds-regulator.h
deleted file mode 100644
index 899f816073a14..0000000000000
--- a/include/linux/leds-regulator.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * leds-regulator.h - platform data structure for regulator driven LEDs.
- *
- * Copyright (C) 2009 Antonio Ospite <ospite@studenti.unina.it>
- */
-
-#ifndef __LINUX_LEDS_REGULATOR_H
-#define __LINUX_LEDS_REGULATOR_H
-
-/*
- * Use "vled" as supply id when declaring the regulator consumer:
- *
- * static struct regulator_consumer_supply pcap_regulator_VVIB_consumers [] = {
- * { .dev_name = "leds-regulator.0", .supply = "vled" },
- * };
- *
- * If you have several regulator driven LEDs, you can append a numerical id to
- * .dev_name as done above, and use the same id when declaring the platform
- * device:
- *
- * static struct led_regulator_platform_data a780_vibrator_data = {
- * .name = "a780::vibrator",
- * };
- *
- * static struct platform_device a780_vibrator = {
- * .name = "leds-regulator",
- * .id = 0,
- * .dev = {
- * .platform_data = &a780_vibrator_data,
- * },
- * };
- */
-
-#include <linux/leds.h>
-
-struct led_regulator_platform_data {
- char *name; /* LED name as expected by LED class */
- enum led_brightness brightness; /* initial brightness value */
-};
-
-#endif /* __LINUX_LEDS_REGULATOR_H */
--
2.26.2
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