Message-ID: <20240531170844.1595468-4-andriy.shevchenko@linux.intel.com>
Date: Fri, 31 May 2024 19:56:15 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
	Lee Jones <lee@...nel.org>,
	linux-kernel@...r.kernel.org,
	linux-iio@...r.kernel.org,
	linux-leds@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	linux-fbdev@...r.kernel.org
Cc: Jonathan Cameron <jic23@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Pavel Machek <pavel@....cz>,
	Daniel Thompson <daniel.thompson@...aro.org>,
	Jingoo Han <jingoohan1@...il.com>,
	Helge Deller <deller@....de>,
	Johan Hovold <jhovold@...il.com>
Subject: [PATCH v1 3/4] leds: lm3533: Remove the driver

The driver has no in kernel users and requires a board file
to be instantiated. Remove basically a dead code.

If ever needed, it can be reinstantiated and converted to one
that uses firmware node interfaces.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/leds/Kconfig       |  13 -
 drivers/leds/Makefile      |   1 -
 drivers/leds/leds-lm3533.c | 755 -------------------------------------
 3 files changed, 769 deletions(-)
 delete mode 100644 drivers/leds/leds-lm3533.c

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 05e6af88b88c..4cdc3a687421 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -229,19 +229,6 @@ config LEDS_LM3532
 	  controlled manually or using PWM input or using ambient
 	  light automatically.
 
-config LEDS_LM3533
-	tristate "LED support for LM3533"
-	depends on LEDS_CLASS
-	depends on MFD_LM3533
-	help
-	  This option enables support for the LEDs on National Semiconductor /
-	  TI LM3533 Lighting Power chips.
-
-	  The LEDs can be controlled directly, through PWM input, or by the
-	  ambient-light-sensor interface. The chip supports
-	  hardware-accelerated blinking with maximum on and off periods of 9.8
-	  and 77 seconds respectively.
-
 config LEDS_LM3642
 	tristate "LED support for LM3642 Chip"
 	depends on LEDS_CLASS && I2C
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index effdfc6f1e95..6bc8c412d3ac 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -38,7 +38,6 @@ obj-$(CONFIG_LEDS_IS31FL319X)		+= leds-is31fl319x.o
 obj-$(CONFIG_LEDS_IS31FL32XX)		+= leds-is31fl32xx.o
 obj-$(CONFIG_LEDS_LM3530)		+= leds-lm3530.o
 obj-$(CONFIG_LEDS_LM3532)		+= leds-lm3532.o
-obj-$(CONFIG_LEDS_LM3533)		+= leds-lm3533.o
 obj-$(CONFIG_LEDS_LM355x)		+= leds-lm355x.o
 obj-$(CONFIG_LEDS_LM36274)		+= leds-lm36274.o
 obj-$(CONFIG_LEDS_LM3642)		+= leds-lm3642.o
diff --git a/drivers/leds/leds-lm3533.c b/drivers/leds/leds-lm3533.c
deleted file mode 100644
index a3d33165d262..000000000000
--- a/drivers/leds/leds-lm3533.c
+++ /dev/null
@@ -1,755 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * leds-lm3533.c -- LM3533 LED driver
- *
- * Copyright (C) 2011-2012 Texas Instruments
- *
- * Author: Johan Hovold <jhovold@...il.com>
- */
-
-#include <linux/module.h>
-#include <linux/leds.h>
-#include <linux/mfd/core.h>
-#include <linux/mutex.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-
-#include <linux/mfd/lm3533.h>
-
-
-#define LM3533_LVCTRLBANK_MIN		2
-#define LM3533_LVCTRLBANK_MAX		5
-#define LM3533_LVCTRLBANK_COUNT		4
-#define LM3533_RISEFALLTIME_MAX		7
-#define LM3533_ALS_CHANNEL_LV_MIN	1
-#define LM3533_ALS_CHANNEL_LV_MAX	2
-
-#define LM3533_REG_CTRLBANK_BCONF_BASE		0x1b
-#define LM3533_REG_PATTERN_ENABLE		0x28
-#define LM3533_REG_PATTERN_LOW_TIME_BASE	0x71
-#define LM3533_REG_PATTERN_HIGH_TIME_BASE	0x72
-#define LM3533_REG_PATTERN_RISETIME_BASE	0x74
-#define LM3533_REG_PATTERN_FALLTIME_BASE	0x75
-
-#define LM3533_REG_PATTERN_STEP			0x10
-
-#define LM3533_REG_CTRLBANK_BCONF_MAPPING_MASK		0x04
-#define LM3533_REG_CTRLBANK_BCONF_ALS_EN_MASK		0x02
-#define LM3533_REG_CTRLBANK_BCONF_ALS_CHANNEL_MASK	0x01
-
-#define LM3533_LED_FLAG_PATTERN_ENABLE		1
-
-
-struct lm3533_led {
-	struct lm3533 *lm3533;
-	struct lm3533_ctrlbank cb;
-	struct led_classdev cdev;
-	int id;
-
-	struct mutex mutex;
-	unsigned long flags;
-};
-
-
-static inline struct lm3533_led *to_lm3533_led(struct led_classdev *cdev)
-{
-	return container_of(cdev, struct lm3533_led, cdev);
-}
-
-static inline int lm3533_led_get_ctrlbank_id(struct lm3533_led *led)
-{
-	return led->id + 2;
-}
-
-static inline u8 lm3533_led_get_lv_reg(struct lm3533_led *led, u8 base)
-{
-	return base + led->id;
-}
-
-static inline u8 lm3533_led_get_pattern(struct lm3533_led *led)
-{
-	return led->id;
-}
-
-static inline u8 lm3533_led_get_pattern_reg(struct lm3533_led *led,
-								u8 base)
-{
-	return base + lm3533_led_get_pattern(led) * LM3533_REG_PATTERN_STEP;
-}
-
-static int lm3533_led_pattern_enable(struct lm3533_led *led, int enable)
-{
-	u8 mask;
-	u8 val;
-	int pattern;
-	int state;
-	int ret = 0;
-
-	dev_dbg(led->cdev.dev, "%s - %d\n", __func__, enable);
-
-	mutex_lock(&led->mutex);
-
-	state = test_bit(LM3533_LED_FLAG_PATTERN_ENABLE, &led->flags);
-	if ((enable && state) || (!enable && !state))
-		goto out;
-
-	pattern = lm3533_led_get_pattern(led);
-	mask = 1 << (2 * pattern);
-
-	if (enable)
-		val = mask;
-	else
-		val = 0;
-
-	ret = lm3533_update(led->lm3533, LM3533_REG_PATTERN_ENABLE, val, mask);
-	if (ret) {
-		dev_err(led->cdev.dev, "failed to enable pattern %d (%d)\n",
-							pattern, enable);
-		goto out;
-	}
-
-	__change_bit(LM3533_LED_FLAG_PATTERN_ENABLE, &led->flags);
-out:
-	mutex_unlock(&led->mutex);
-
-	return ret;
-}
-
-static int lm3533_led_set(struct led_classdev *cdev,
-						enum led_brightness value)
-{
-	struct lm3533_led *led = to_lm3533_led(cdev);
-
-	dev_dbg(led->cdev.dev, "%s - %d\n", __func__, value);
-
-	if (value == 0)
-		lm3533_led_pattern_enable(led, 0);	/* disable blink */
-
-	return lm3533_ctrlbank_set_brightness(&led->cb, value);
-}
-
-static enum led_brightness lm3533_led_get(struct led_classdev *cdev)
-{
-	struct lm3533_led *led = to_lm3533_led(cdev);
-	u8 val;
-	int ret;
-
-	ret = lm3533_ctrlbank_get_brightness(&led->cb, &val);
-	if (ret)
-		return ret;
-
-	dev_dbg(led->cdev.dev, "%s - %u\n", __func__, val);
-
-	return val;
-}
-
-/* Pattern generator defines (delays in us). */
-#define LM3533_LED_DELAY1_VMIN	0x00
-#define LM3533_LED_DELAY2_VMIN	0x3d
-#define LM3533_LED_DELAY3_VMIN	0x80
-
-#define LM3533_LED_DELAY1_VMAX	(LM3533_LED_DELAY2_VMIN - 1)
-#define LM3533_LED_DELAY2_VMAX	(LM3533_LED_DELAY3_VMIN - 1)
-#define LM3533_LED_DELAY3_VMAX	0xff
-
-#define LM3533_LED_DELAY1_TMIN	16384U
-#define LM3533_LED_DELAY2_TMIN	1130496U
-#define LM3533_LED_DELAY3_TMIN	10305536U
-
-#define LM3533_LED_DELAY1_TMAX	999424U
-#define LM3533_LED_DELAY2_TMAX	9781248U
-#define LM3533_LED_DELAY3_TMAX	76890112U
-
-/* t_step = (t_max - t_min) / (v_max - v_min) */
-#define LM3533_LED_DELAY1_TSTEP	16384
-#define LM3533_LED_DELAY2_TSTEP	131072
-#define LM3533_LED_DELAY3_TSTEP	524288
-
-/* Delay limits for hardware accelerated blinking (in ms). */
-#define LM3533_LED_DELAY_ON_MAX \
-	((LM3533_LED_DELAY2_TMAX + LM3533_LED_DELAY2_TSTEP / 2) / 1000)
-#define LM3533_LED_DELAY_OFF_MAX \
-	((LM3533_LED_DELAY3_TMAX + LM3533_LED_DELAY3_TSTEP / 2) / 1000)
-
-/*
- * Returns linear map of *t from [t_min,t_max] to [v_min,v_max] with a step
- * size of t_step, where
- *
- *	t_step = (t_max - t_min) / (v_max - v_min)
- *
- * and updates *t to reflect the mapped value.
- */
-static u8 time_to_val(unsigned *t, unsigned t_min, unsigned t_step,
-							u8 v_min, u8 v_max)
-{
-	unsigned val;
-
-	val = (*t + t_step / 2 - t_min) / t_step + v_min;
-
-	*t = t_step * (val - v_min) + t_min;
-
-	return (u8)val;
-}
-
-/*
- * Returns time code corresponding to *delay (in ms) and updates *delay to
- * reflect actual hardware delay.
- *
- * Hardware supports 256 discrete delay times, divided into three groups with
- * the following ranges and step-sizes:
- *
- *	[   16,   999]	[0x00, 0x3e]	step  16 ms
- *	[ 1130,  9781]	[0x3d, 0x7f]	step 131 ms
- *	[10306, 76890]	[0x80, 0xff]	step 524 ms
- *
- * Note that delay group 3 is only available for delay_off.
- */
-static u8 lm3533_led_get_hw_delay(unsigned *delay)
-{
-	unsigned t;
-	u8 val;
-
-	t = *delay * 1000;
-
-	if (t >= (LM3533_LED_DELAY2_TMAX + LM3533_LED_DELAY3_TMIN) / 2) {
-		t = clamp(t, LM3533_LED_DELAY3_TMIN, LM3533_LED_DELAY3_TMAX);
-		val = time_to_val(&t,	LM3533_LED_DELAY3_TMIN,
-					LM3533_LED_DELAY3_TSTEP,
-					LM3533_LED_DELAY3_VMIN,
-					LM3533_LED_DELAY3_VMAX);
-	} else if (t >= (LM3533_LED_DELAY1_TMAX + LM3533_LED_DELAY2_TMIN) / 2) {
-		t = clamp(t, LM3533_LED_DELAY2_TMIN, LM3533_LED_DELAY2_TMAX);
-		val = time_to_val(&t,	LM3533_LED_DELAY2_TMIN,
-					LM3533_LED_DELAY2_TSTEP,
-					LM3533_LED_DELAY2_VMIN,
-					LM3533_LED_DELAY2_VMAX);
-	} else {
-		t = clamp(t, LM3533_LED_DELAY1_TMIN, LM3533_LED_DELAY1_TMAX);
-		val = time_to_val(&t,	LM3533_LED_DELAY1_TMIN,
-					LM3533_LED_DELAY1_TSTEP,
-					LM3533_LED_DELAY1_VMIN,
-					LM3533_LED_DELAY1_VMAX);
-	}
-
-	*delay = (t + 500) / 1000;
-
-	return val;
-}
-
-/*
- * Set delay register base to *delay (in ms) and update *delay to reflect
- * actual hardware delay used.
- */
-static u8 lm3533_led_delay_set(struct lm3533_led *led, u8 base,
-							unsigned long *delay)
-{
-	unsigned t;
-	u8 val;
-	u8 reg;
-	int ret;
-
-	t = (unsigned)*delay;
-
-	/* Delay group 3 is only available for low time (delay off). */
-	if (base != LM3533_REG_PATTERN_LOW_TIME_BASE)
-		t = min(t, LM3533_LED_DELAY2_TMAX / 1000);
-
-	val = lm3533_led_get_hw_delay(&t);
-
-	dev_dbg(led->cdev.dev, "%s - %lu: %u (0x%02x)\n", __func__,
-							*delay, t, val);
-	reg = lm3533_led_get_pattern_reg(led, base);
-	ret = lm3533_write(led->lm3533, reg, val);
-	if (ret)
-		dev_err(led->cdev.dev, "failed to set delay (%02x)\n", reg);
-
-	*delay = t;
-
-	return ret;
-}
-
-static int lm3533_led_delay_on_set(struct lm3533_led *led, unsigned long *t)
-{
-	return lm3533_led_delay_set(led, LM3533_REG_PATTERN_HIGH_TIME_BASE, t);
-}
-
-static int lm3533_led_delay_off_set(struct lm3533_led *led, unsigned long *t)
-{
-	return lm3533_led_delay_set(led, LM3533_REG_PATTERN_LOW_TIME_BASE, t);
-}
-
-static int lm3533_led_blink_set(struct led_classdev *cdev,
-				unsigned long *delay_on,
-				unsigned long *delay_off)
-{
-	struct lm3533_led *led = to_lm3533_led(cdev);
-	int ret;
-
-	dev_dbg(led->cdev.dev, "%s - on = %lu, off = %lu\n", __func__,
-							*delay_on, *delay_off);
-
-	if (*delay_on > LM3533_LED_DELAY_ON_MAX ||
-					*delay_off > LM3533_LED_DELAY_OFF_MAX)
-		return -EINVAL;
-
-	if (*delay_on == 0 && *delay_off == 0) {
-		*delay_on = 500;
-		*delay_off = 500;
-	}
-
-	ret = lm3533_led_delay_on_set(led, delay_on);
-	if (ret)
-		return ret;
-
-	ret = lm3533_led_delay_off_set(led, delay_off);
-	if (ret)
-		return ret;
-
-	return lm3533_led_pattern_enable(led, 1);
-}
-
-static ssize_t show_id(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct lm3533_led *led = to_lm3533_led(led_cdev);
-
-	return sysfs_emit(buf, "%d\n", led->id);
-}
-
-/*
- * Pattern generator rise/fall times:
- *
- *   0 - 2048 us (default)
- *   1 - 262 ms
- *   2 - 524 ms
- *   3 - 1.049 s
- *   4 - 2.097 s
- *   5 - 4.194 s
- *   6 - 8.389 s
- *   7 - 16.78 s
- */
-static ssize_t show_risefalltime(struct device *dev,
-					struct device_attribute *attr,
-					char *buf, u8 base)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct lm3533_led *led = to_lm3533_led(led_cdev);
-	ssize_t ret;
-	u8 reg;
-	u8 val;
-
-	reg = lm3533_led_get_pattern_reg(led, base);
-	ret = lm3533_read(led->lm3533, reg, &val);
-	if (ret)
-		return ret;
-
-	return sysfs_emit(buf, "%x\n", val);
-}
-
-static ssize_t show_risetime(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	return show_risefalltime(dev, attr, buf,
-					LM3533_REG_PATTERN_RISETIME_BASE);
-}
-
-static ssize_t show_falltime(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	return show_risefalltime(dev, attr, buf,
-					LM3533_REG_PATTERN_FALLTIME_BASE);
-}
-
-static ssize_t store_risefalltime(struct device *dev,
-					struct device_attribute *attr,
-					const char *buf, size_t len, u8 base)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct lm3533_led *led = to_lm3533_led(led_cdev);
-	u8 val;
-	u8 reg;
-	int ret;
-
-	if (kstrtou8(buf, 0, &val) || val > LM3533_RISEFALLTIME_MAX)
-		return -EINVAL;
-
-	reg = lm3533_led_get_pattern_reg(led, base);
-	ret = lm3533_write(led->lm3533, reg, val);
-	if (ret)
-		return ret;
-
-	return len;
-}
-
-static ssize_t store_risetime(struct device *dev,
-					struct device_attribute *attr,
-					const char *buf, size_t len)
-{
-	return store_risefalltime(dev, attr, buf, len,
-					LM3533_REG_PATTERN_RISETIME_BASE);
-}
-
-static ssize_t store_falltime(struct device *dev,
-					struct device_attribute *attr,
-					const char *buf, size_t len)
-{
-	return store_risefalltime(dev, attr, buf, len,
-					LM3533_REG_PATTERN_FALLTIME_BASE);
-}
-
-static ssize_t show_als_channel(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct lm3533_led *led = to_lm3533_led(led_cdev);
-	unsigned channel;
-	u8 reg;
-	u8 val;
-	int ret;
-
-	reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
-	ret = lm3533_read(led->lm3533, reg, &val);
-	if (ret)
-		return ret;
-
-	channel = (val & LM3533_REG_CTRLBANK_BCONF_ALS_CHANNEL_MASK) + 1;
-
-	return sysfs_emit(buf, "%u\n", channel);
-}
-
-static ssize_t store_als_channel(struct device *dev,
-					struct device_attribute *attr,
-					const char *buf, size_t len)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct lm3533_led *led = to_lm3533_led(led_cdev);
-	unsigned channel;
-	u8 reg;
-	u8 val;
-	u8 mask;
-	int ret;
-
-	if (kstrtouint(buf, 0, &channel))
-		return -EINVAL;
-
-	if (channel < LM3533_ALS_CHANNEL_LV_MIN ||
-					channel > LM3533_ALS_CHANNEL_LV_MAX)
-		return -EINVAL;
-
-	reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
-	mask = LM3533_REG_CTRLBANK_BCONF_ALS_CHANNEL_MASK;
-	val = channel - 1;
-
-	ret = lm3533_update(led->lm3533, reg, val, mask);
-	if (ret)
-		return ret;
-
-	return len;
-}
-
-static ssize_t show_als_en(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct lm3533_led *led = to_lm3533_led(led_cdev);
-	bool enable;
-	u8 reg;
-	u8 val;
-	int ret;
-
-	reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
-	ret = lm3533_read(led->lm3533, reg, &val);
-	if (ret)
-		return ret;
-
-	enable = val & LM3533_REG_CTRLBANK_BCONF_ALS_EN_MASK;
-
-	return sysfs_emit(buf, "%d\n", enable);
-}
-
-static ssize_t store_als_en(struct device *dev,
-					struct device_attribute *attr,
-					const char *buf, size_t len)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct lm3533_led *led = to_lm3533_led(led_cdev);
-	unsigned enable;
-	u8 reg;
-	u8 mask;
-	u8 val;
-	int ret;
-
-	if (kstrtouint(buf, 0, &enable))
-		return -EINVAL;
-
-	reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
-	mask = LM3533_REG_CTRLBANK_BCONF_ALS_EN_MASK;
-
-	if (enable)
-		val = mask;
-	else
-		val = 0;
-
-	ret = lm3533_update(led->lm3533, reg, val, mask);
-	if (ret)
-		return ret;
-
-	return len;
-}
-
-static ssize_t show_linear(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct lm3533_led *led = to_lm3533_led(led_cdev);
-	u8 reg;
-	u8 val;
-	int linear;
-	int ret;
-
-	reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
-	ret = lm3533_read(led->lm3533, reg, &val);
-	if (ret)
-		return ret;
-
-	if (val & LM3533_REG_CTRLBANK_BCONF_MAPPING_MASK)
-		linear = 1;
-	else
-		linear = 0;
-
-	return sysfs_emit(buf, "%x\n", linear);
-}
-
-static ssize_t store_linear(struct device *dev,
-					struct device_attribute *attr,
-					const char *buf, size_t len)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct lm3533_led *led = to_lm3533_led(led_cdev);
-	unsigned long linear;
-	u8 reg;
-	u8 mask;
-	u8 val;
-	int ret;
-
-	if (kstrtoul(buf, 0, &linear))
-		return -EINVAL;
-
-	reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
-	mask = LM3533_REG_CTRLBANK_BCONF_MAPPING_MASK;
-
-	if (linear)
-		val = mask;
-	else
-		val = 0;
-
-	ret = lm3533_update(led->lm3533, reg, val, mask);
-	if (ret)
-		return ret;
-
-	return len;
-}
-
-static ssize_t show_pwm(struct device *dev,
-					struct device_attribute *attr,
-					char *buf)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct lm3533_led *led = to_lm3533_led(led_cdev);
-	u8 val;
-	int ret;
-
-	ret = lm3533_ctrlbank_get_pwm(&led->cb, &val);
-	if (ret)
-		return ret;
-
-	return sysfs_emit(buf, "%u\n", val);
-}
-
-static ssize_t store_pwm(struct device *dev,
-					struct device_attribute *attr,
-					const char *buf, size_t len)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct lm3533_led *led = to_lm3533_led(led_cdev);
-	u8 val;
-	int ret;
-
-	if (kstrtou8(buf, 0, &val))
-		return -EINVAL;
-
-	ret = lm3533_ctrlbank_set_pwm(&led->cb, val);
-	if (ret)
-		return ret;
-
-	return len;
-}
-
-static LM3533_ATTR_RW(als_channel);
-static LM3533_ATTR_RW(als_en);
-static LM3533_ATTR_RW(falltime);
-static LM3533_ATTR_RO(id);
-static LM3533_ATTR_RW(linear);
-static LM3533_ATTR_RW(pwm);
-static LM3533_ATTR_RW(risetime);
-
-static struct attribute *lm3533_led_attributes[] = {
-	&dev_attr_als_channel.attr,
-	&dev_attr_als_en.attr,
-	&dev_attr_falltime.attr,
-	&dev_attr_id.attr,
-	&dev_attr_linear.attr,
-	&dev_attr_pwm.attr,
-	&dev_attr_risetime.attr,
-	NULL,
-};
-
-static umode_t lm3533_led_attr_is_visible(struct kobject *kobj,
-					     struct attribute *attr, int n)
-{
-	struct device *dev = kobj_to_dev(kobj);
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct lm3533_led *led = to_lm3533_led(led_cdev);
-	umode_t mode = attr->mode;
-
-	if (attr == &dev_attr_als_channel.attr ||
-					attr == &dev_attr_als_en.attr) {
-		if (!led->lm3533->have_als)
-			mode = 0;
-	}
-
-	return mode;
-};
-
-static const struct attribute_group lm3533_led_attribute_group = {
-	.is_visible	= lm3533_led_attr_is_visible,
-	.attrs		= lm3533_led_attributes
-};
-
-static const struct attribute_group *lm3533_led_attribute_groups[] = {
-	&lm3533_led_attribute_group,
-	NULL
-};
-
-static int lm3533_led_setup(struct lm3533_led *led,
-					struct lm3533_led_platform_data *pdata)
-{
-	int ret;
-
-	ret = lm3533_ctrlbank_set_max_current(&led->cb, pdata->max_current);
-	if (ret)
-		return ret;
-
-	return lm3533_ctrlbank_set_pwm(&led->cb, pdata->pwm);
-}
-
-static int lm3533_led_probe(struct platform_device *pdev)
-{
-	struct lm3533 *lm3533;
-	struct lm3533_led_platform_data *pdata;
-	struct lm3533_led *led;
-	int ret;
-
-	dev_dbg(&pdev->dev, "%s\n", __func__);
-
-	lm3533 = dev_get_drvdata(pdev->dev.parent);
-	if (!lm3533)
-		return -EINVAL;
-
-	pdata = dev_get_platdata(&pdev->dev);
-	if (!pdata) {
-		dev_err(&pdev->dev, "no platform data\n");
-		return -EINVAL;
-	}
-
-	if (pdev->id < 0 || pdev->id >= LM3533_LVCTRLBANK_COUNT) {
-		dev_err(&pdev->dev, "illegal LED id %d\n", pdev->id);
-		return -EINVAL;
-	}
-
-	led = devm_kzalloc(&pdev->dev, sizeof(*led), GFP_KERNEL);
-	if (!led)
-		return -ENOMEM;
-
-	led->lm3533 = lm3533;
-	led->cdev.name = pdata->name;
-	led->cdev.default_trigger = pdata->default_trigger;
-	led->cdev.brightness_set_blocking = lm3533_led_set;
-	led->cdev.brightness_get = lm3533_led_get;
-	led->cdev.blink_set = lm3533_led_blink_set;
-	led->cdev.brightness = LED_OFF;
-	led->cdev.groups = lm3533_led_attribute_groups;
-	led->id = pdev->id;
-
-	mutex_init(&led->mutex);
-
-	/* The class framework makes a callback to get brightness during
-	 * registration so use parent device (for error reporting) until
-	 * registered.
-	 */
-	led->cb.lm3533 = lm3533;
-	led->cb.id = lm3533_led_get_ctrlbank_id(led);
-	led->cb.dev = lm3533->dev;
-
-	platform_set_drvdata(pdev, led);
-
-	ret = led_classdev_register(pdev->dev.parent, &led->cdev);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to register LED %d\n", pdev->id);
-		return ret;
-	}
-
-	led->cb.dev = led->cdev.dev;
-
-	ret = lm3533_led_setup(led, pdata);
-	if (ret)
-		goto err_deregister;
-
-	ret = lm3533_ctrlbank_enable(&led->cb);
-	if (ret)
-		goto err_deregister;
-
-	return 0;
-
-err_deregister:
-	led_classdev_unregister(&led->cdev);
-
-	return ret;
-}
-
-static void lm3533_led_remove(struct platform_device *pdev)
-{
-	struct lm3533_led *led = platform_get_drvdata(pdev);
-
-	dev_dbg(&pdev->dev, "%s\n", __func__);
-
-	lm3533_ctrlbank_disable(&led->cb);
-	led_classdev_unregister(&led->cdev);
-}
-
-static void lm3533_led_shutdown(struct platform_device *pdev)
-{
-
-	struct lm3533_led *led = platform_get_drvdata(pdev);
-
-	dev_dbg(&pdev->dev, "%s\n", __func__);
-
-	lm3533_ctrlbank_disable(&led->cb);
-	lm3533_led_set(&led->cdev, LED_OFF);		/* disable blink */
-}
-
-static struct platform_driver lm3533_led_driver = {
-	.driver = {
-		.name = "lm3533-leds",
-	},
-	.probe		= lm3533_led_probe,
-	.remove_new	= lm3533_led_remove,
-	.shutdown	= lm3533_led_shutdown,
-};
-module_platform_driver(lm3533_led_driver);
-
-MODULE_AUTHOR("Johan Hovold <jhovold@...il.com>");
-MODULE_DESCRIPTION("LM3533 LED driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:lm3533-leds");
-- 
2.43.0.rc1.1336.g36b5255a03ac

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