backlight: add LM3533 backlight driver
Add sub-driver for the backlights on National Semiconductor / TI LM3533 lighting power chips. The chip provides 256 brightness levels and ambient-light-sensor and pwm input control. [akpm@linux-foundation.org: fix warning] [akpm@linux-foundation.org: fix the type of `mode'] Signed-off-by: Johan Hovold <jhovold@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Rob Landley <rob@landley.net> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Jonathan Cameron <jic23@cam.ac.uk> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Johan Hovold
committed by
Linus Torvalds
Linus Torvalds
parent
1615d210db
commit
7f26c970b4
@@ -0,0 +1,48 @@
|
|||||||
|
What: /sys/class/backlight/<backlight>/als_channel
|
||||||
|
Date: May 2012
|
||||||
|
KernelVersion: 3.5
|
||||||
|
Contact: Johan Hovold <jhovold@gmail.com>
|
||||||
|
Description:
|
||||||
|
Get the ALS output channel used as input in
|
||||||
|
ALS-current-control mode (0, 1), where
|
||||||
|
|
||||||
|
0 - out_current0 (backlight 0)
|
||||||
|
1 - out_current1 (backlight 1)
|
||||||
|
|
||||||
|
What: /sys/class/backlight/<backlight>/als_en
|
||||||
|
Date: May 2012
|
||||||
|
KernelVersion: 3.5
|
||||||
|
Contact: Johan Hovold <jhovold@gmail.com>
|
||||||
|
Description:
|
||||||
|
Enable ALS-current-control mode (0, 1).
|
||||||
|
|
||||||
|
What: /sys/class/backlight/<backlight>/id
|
||||||
|
Date: April 2012
|
||||||
|
KernelVersion: 3.5
|
||||||
|
Contact: Johan Hovold <jhovold@gmail.com>
|
||||||
|
Description:
|
||||||
|
Get the id of this backlight (0, 1).
|
||||||
|
|
||||||
|
What: /sys/class/backlight/<backlight>/linear
|
||||||
|
Date: April 2012
|
||||||
|
KernelVersion: 3.5
|
||||||
|
Contact: Johan Hovold <jhovold@gmail.com>
|
||||||
|
Description:
|
||||||
|
Set the brightness-mapping mode (0, 1), where
|
||||||
|
|
||||||
|
0 - exponential mode
|
||||||
|
1 - linear mode
|
||||||
|
|
||||||
|
What: /sys/class/backlight/<backlight>/pwm
|
||||||
|
Date: April 2012
|
||||||
|
KernelVersion: 3.5
|
||||||
|
Contact: Johan Hovold <jhovold@gmail.com>
|
||||||
|
Description:
|
||||||
|
Set the PWM-input control mask (5 bits), where
|
||||||
|
|
||||||
|
bit 5 - PWM-input enabled in Zone 4
|
||||||
|
bit 4 - PWM-input enabled in Zone 3
|
||||||
|
bit 3 - PWM-input enabled in Zone 2
|
||||||
|
bit 2 - PWM-input enabled in Zone 1
|
||||||
|
bit 1 - PWM-input enabled in Zone 0
|
||||||
|
bit 0 - PWM-input enabled
|
||||||
@@ -184,6 +184,18 @@ config BACKLIGHT_GENERIC
|
|||||||
known as the Corgi backlight driver. If you have a Sharp Zaurus
|
known as the Corgi backlight driver. If you have a Sharp Zaurus
|
||||||
SL-C7xx, SL-Cxx00 or SL-6000x say y.
|
SL-C7xx, SL-Cxx00 or SL-6000x say y.
|
||||||
|
|
||||||
|
config BACKLIGHT_LM3533
|
||||||
|
tristate "Backlight Driver for LM3533"
|
||||||
|
depends on BACKLIGHT_CLASS_DEVICE
|
||||||
|
depends on MFD_LM3533
|
||||||
|
help
|
||||||
|
Say Y to enable the backlight driver for National Semiconductor / TI
|
||||||
|
LM3533 Lighting Power chips.
|
||||||
|
|
||||||
|
The backlights can be controlled directly, through PWM input, or by
|
||||||
|
the ambient-light-sensor interface. The chip supports 256 brightness
|
||||||
|
levels.
|
||||||
|
|
||||||
config BACKLIGHT_LOCOMO
|
config BACKLIGHT_LOCOMO
|
||||||
tristate "Sharp LOCOMO LCD/Backlight Driver"
|
tristate "Sharp LOCOMO LCD/Backlight Driver"
|
||||||
depends on SHARP_LOCOMO
|
depends on SHARP_LOCOMO
|
||||||
|
|||||||
@@ -21,6 +21,7 @@ obj-$(CONFIG_BACKLIGHT_EP93XX) += ep93xx_bl.o
|
|||||||
obj-$(CONFIG_BACKLIGHT_GENERIC) += generic_bl.o
|
obj-$(CONFIG_BACKLIGHT_GENERIC) += generic_bl.o
|
||||||
obj-$(CONFIG_BACKLIGHT_HP700) += jornada720_bl.o
|
obj-$(CONFIG_BACKLIGHT_HP700) += jornada720_bl.o
|
||||||
obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o
|
obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o
|
||||||
|
obj-$(CONFIG_BACKLIGHT_LM3533) += lm3533_bl.o
|
||||||
obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o
|
obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o
|
||||||
obj-$(CONFIG_BACKLIGHT_LP855X) += lp855x_bl.o
|
obj-$(CONFIG_BACKLIGHT_LP855X) += lp855x_bl.o
|
||||||
obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o
|
obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o
|
||||||
|
|||||||
423
drivers/video/backlight/lm3533_bl.c
Normal file
423
drivers/video/backlight/lm3533_bl.c
Normal file
@@ -0,0 +1,423 @@
|
|||||||
|
/*
|
||||||
|
* lm3533-bl.c -- LM3533 Backlight driver
|
||||||
|
*
|
||||||
|
* Copyright (C) 2011-2012 Texas Instruments
|
||||||
|
*
|
||||||
|
* Author: Johan Hovold <jhovold@gmail.com>
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or modify it
|
||||||
|
* under the terms of the GNU General Public License as published by the
|
||||||
|
* Free Software Foundation; either version 2 of the License, or (at your
|
||||||
|
* option) any later version.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <linux/module.h>
|
||||||
|
#include <linux/init.h>
|
||||||
|
#include <linux/platform_device.h>
|
||||||
|
#include <linux/backlight.h>
|
||||||
|
#include <linux/fb.h>
|
||||||
|
#include <linux/slab.h>
|
||||||
|
|
||||||
|
#include <linux/mfd/lm3533.h>
|
||||||
|
|
||||||
|
|
||||||
|
#define LM3533_HVCTRLBANK_COUNT 2
|
||||||
|
#define LM3533_BL_MAX_BRIGHTNESS 255
|
||||||
|
|
||||||
|
#define LM3533_REG_CTRLBANK_AB_BCONF 0x1a
|
||||||
|
|
||||||
|
|
||||||
|
struct lm3533_bl {
|
||||||
|
struct lm3533 *lm3533;
|
||||||
|
struct lm3533_ctrlbank cb;
|
||||||
|
struct backlight_device *bd;
|
||||||
|
int id;
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
static inline int lm3533_bl_get_ctrlbank_id(struct lm3533_bl *bl)
|
||||||
|
{
|
||||||
|
return bl->id;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int lm3533_bl_update_status(struct backlight_device *bd)
|
||||||
|
{
|
||||||
|
struct lm3533_bl *bl = bl_get_data(bd);
|
||||||
|
int brightness = bd->props.brightness;
|
||||||
|
|
||||||
|
if (bd->props.power != FB_BLANK_UNBLANK)
|
||||||
|
brightness = 0;
|
||||||
|
if (bd->props.fb_blank != FB_BLANK_UNBLANK)
|
||||||
|
brightness = 0;
|
||||||
|
|
||||||
|
return lm3533_ctrlbank_set_brightness(&bl->cb, (u8)brightness);
|
||||||
|
}
|
||||||
|
|
||||||
|
static int lm3533_bl_get_brightness(struct backlight_device *bd)
|
||||||
|
{
|
||||||
|
struct lm3533_bl *bl = bl_get_data(bd);
|
||||||
|
u8 val;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
ret = lm3533_ctrlbank_get_brightness(&bl->cb, &val);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
return val;
|
||||||
|
}
|
||||||
|
|
||||||
|
static const struct backlight_ops lm3533_bl_ops = {
|
||||||
|
.get_brightness = lm3533_bl_get_brightness,
|
||||||
|
.update_status = lm3533_bl_update_status,
|
||||||
|
};
|
||||||
|
|
||||||
|
static ssize_t show_id(struct device *dev,
|
||||||
|
struct device_attribute *attr, char *buf)
|
||||||
|
{
|
||||||
|
struct lm3533_bl *bl = dev_get_drvdata(dev);
|
||||||
|
|
||||||
|
return scnprintf(buf, PAGE_SIZE, "%d\n", bl->id);
|
||||||
|
}
|
||||||
|
|
||||||
|
static ssize_t show_als_channel(struct device *dev,
|
||||||
|
struct device_attribute *attr, char *buf)
|
||||||
|
{
|
||||||
|
struct lm3533_bl *bl = dev_get_drvdata(dev);
|
||||||
|
unsigned channel = lm3533_bl_get_ctrlbank_id(bl);
|
||||||
|
|
||||||
|
return scnprintf(buf, PAGE_SIZE, "%u\n", channel);
|
||||||
|
}
|
||||||
|
|
||||||
|
static ssize_t show_als_en(struct device *dev,
|
||||||
|
struct device_attribute *attr, char *buf)
|
||||||
|
{
|
||||||
|
struct lm3533_bl *bl = dev_get_drvdata(dev);
|
||||||
|
int ctrlbank = lm3533_bl_get_ctrlbank_id(bl);
|
||||||
|
u8 val;
|
||||||
|
u8 mask;
|
||||||
|
bool enable;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
ret = lm3533_read(bl->lm3533, LM3533_REG_CTRLBANK_AB_BCONF, &val);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
mask = 1 << (2 * ctrlbank);
|
||||||
|
enable = val & mask;
|
||||||
|
|
||||||
|
return scnprintf(buf, PAGE_SIZE, "%d\n", enable);
|
||||||
|
}
|
||||||
|
|
||||||
|
static ssize_t store_als_en(struct device *dev,
|
||||||
|
struct device_attribute *attr,
|
||||||
|
const char *buf, size_t len)
|
||||||
|
{
|
||||||
|
struct lm3533_bl *bl = dev_get_drvdata(dev);
|
||||||
|
int ctrlbank = lm3533_bl_get_ctrlbank_id(bl);
|
||||||
|
int enable;
|
||||||
|
u8 val;
|
||||||
|
u8 mask;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
if (kstrtoint(buf, 0, &enable))
|
||||||
|
return -EINVAL;
|
||||||
|
|
||||||
|
mask = 1 << (2 * ctrlbank);
|
||||||
|
|
||||||
|
if (enable)
|
||||||
|
val = mask;
|
||||||
|
else
|
||||||
|
val = 0;
|
||||||
|
|
||||||
|
ret = lm3533_update(bl->lm3533, LM3533_REG_CTRLBANK_AB_BCONF, val,
|
||||||
|
mask);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
return len;
|
||||||
|
}
|
||||||
|
|
||||||
|
static ssize_t show_linear(struct device *dev,
|
||||||
|
struct device_attribute *attr, char *buf)
|
||||||
|
{
|
||||||
|
struct lm3533_bl *bl = dev_get_drvdata(dev);
|
||||||
|
u8 val;
|
||||||
|
u8 mask;
|
||||||
|
int linear;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
ret = lm3533_read(bl->lm3533, LM3533_REG_CTRLBANK_AB_BCONF, &val);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
mask = 1 << (2 * lm3533_bl_get_ctrlbank_id(bl) + 1);
|
||||||
|
|
||||||
|
if (val & mask)
|
||||||
|
linear = 1;
|
||||||
|
else
|
||||||
|
linear = 0;
|
||||||
|
|
||||||
|
return scnprintf(buf, PAGE_SIZE, "%x\n", linear);
|
||||||
|
}
|
||||||
|
|
||||||
|
static ssize_t store_linear(struct device *dev,
|
||||||
|
struct device_attribute *attr,
|
||||||
|
const char *buf, size_t len)
|
||||||
|
{
|
||||||
|
struct lm3533_bl *bl = dev_get_drvdata(dev);
|
||||||
|
unsigned long linear;
|
||||||
|
u8 mask;
|
||||||
|
u8 val;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
if (kstrtoul(buf, 0, &linear))
|
||||||
|
return -EINVAL;
|
||||||
|
|
||||||
|
mask = 1 << (2 * lm3533_bl_get_ctrlbank_id(bl) + 1);
|
||||||
|
|
||||||
|
if (linear)
|
||||||
|
val = mask;
|
||||||
|
else
|
||||||
|
val = 0;
|
||||||
|
|
||||||
|
ret = lm3533_update(bl->lm3533, LM3533_REG_CTRLBANK_AB_BCONF, val,
|
||||||
|
mask);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
return len;
|
||||||
|
}
|
||||||
|
|
||||||
|
static ssize_t show_pwm(struct device *dev,
|
||||||
|
struct device_attribute *attr,
|
||||||
|
char *buf)
|
||||||
|
{
|
||||||
|
struct lm3533_bl *bl = dev_get_drvdata(dev);
|
||||||
|
u8 val;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
ret = lm3533_ctrlbank_get_pwm(&bl->cb, &val);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
return scnprintf(buf, PAGE_SIZE, "%u\n", val);
|
||||||
|
}
|
||||||
|
|
||||||
|
static ssize_t store_pwm(struct device *dev,
|
||||||
|
struct device_attribute *attr,
|
||||||
|
const char *buf, size_t len)
|
||||||
|
{
|
||||||
|
struct lm3533_bl *bl = dev_get_drvdata(dev);
|
||||||
|
u8 val;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
if (kstrtou8(buf, 0, &val))
|
||||||
|
return -EINVAL;
|
||||||
|
|
||||||
|
ret = lm3533_ctrlbank_set_pwm(&bl->cb, val);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
return len;
|
||||||
|
}
|
||||||
|
|
||||||
|
static LM3533_ATTR_RO(als_channel);
|
||||||
|
static LM3533_ATTR_RW(als_en);
|
||||||
|
static LM3533_ATTR_RO(id);
|
||||||
|
static LM3533_ATTR_RW(linear);
|
||||||
|
static LM3533_ATTR_RW(pwm);
|
||||||
|
|
||||||
|
static struct attribute *lm3533_bl_attributes[] = {
|
||||||
|
&dev_attr_als_channel.attr,
|
||||||
|
&dev_attr_als_en.attr,
|
||||||
|
&dev_attr_id.attr,
|
||||||
|
&dev_attr_linear.attr,
|
||||||
|
&dev_attr_pwm.attr,
|
||||||
|
NULL,
|
||||||
|
};
|
||||||
|
|
||||||
|
static umode_t lm3533_bl_attr_is_visible(struct kobject *kobj,
|
||||||
|
struct attribute *attr, int n)
|
||||||
|
{
|
||||||
|
struct device *dev = container_of(kobj, struct device, kobj);
|
||||||
|
struct lm3533_bl *bl = dev_get_drvdata(dev);
|
||||||
|
umode_t mode = attr->mode;
|
||||||
|
|
||||||
|
if (attr == &dev_attr_als_channel.attr ||
|
||||||
|
attr == &dev_attr_als_en.attr) {
|
||||||
|
if (!bl->lm3533->have_als)
|
||||||
|
mode = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
return mode;
|
||||||
|
};
|
||||||
|
|
||||||
|
static struct attribute_group lm3533_bl_attribute_group = {
|
||||||
|
.is_visible = lm3533_bl_attr_is_visible,
|
||||||
|
.attrs = lm3533_bl_attributes
|
||||||
|
};
|
||||||
|
|
||||||
|
static int __devinit lm3533_bl_setup(struct lm3533_bl *bl,
|
||||||
|
struct lm3533_bl_platform_data *pdata)
|
||||||
|
{
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
ret = lm3533_ctrlbank_set_max_current(&bl->cb, pdata->max_current);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
return lm3533_ctrlbank_set_pwm(&bl->cb, pdata->pwm);
|
||||||
|
}
|
||||||
|
|
||||||
|
static int __devinit lm3533_bl_probe(struct platform_device *pdev)
|
||||||
|
{
|
||||||
|
struct lm3533 *lm3533;
|
||||||
|
struct lm3533_bl_platform_data *pdata;
|
||||||
|
struct lm3533_bl *bl;
|
||||||
|
struct backlight_device *bd;
|
||||||
|
struct backlight_properties props;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
dev_dbg(&pdev->dev, "%s\n", __func__);
|
||||||
|
|
||||||
|
lm3533 = dev_get_drvdata(pdev->dev.parent);
|
||||||
|
if (!lm3533)
|
||||||
|
return -EINVAL;
|
||||||
|
|
||||||
|
pdata = pdev->dev.platform_data;
|
||||||
|
if (!pdata) {
|
||||||
|
dev_err(&pdev->dev, "no platform data\n");
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (pdev->id < 0 || pdev->id >= LM3533_HVCTRLBANK_COUNT) {
|
||||||
|
dev_err(&pdev->dev, "illegal backlight id %d\n", pdev->id);
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
bl = kzalloc(sizeof(*bl), GFP_KERNEL);
|
||||||
|
if (!bl) {
|
||||||
|
dev_err(&pdev->dev,
|
||||||
|
"failed to allocate memory for backlight\n");
|
||||||
|
return -ENOMEM;
|
||||||
|
}
|
||||||
|
|
||||||
|
bl->lm3533 = lm3533;
|
||||||
|
bl->id = pdev->id;
|
||||||
|
|
||||||
|
bl->cb.lm3533 = lm3533;
|
||||||
|
bl->cb.id = lm3533_bl_get_ctrlbank_id(bl);
|
||||||
|
bl->cb.dev = NULL; /* until registered */
|
||||||
|
|
||||||
|
memset(&props, 0, sizeof(props));
|
||||||
|
props.type = BACKLIGHT_RAW;
|
||||||
|
props.max_brightness = LM3533_BL_MAX_BRIGHTNESS;
|
||||||
|
props.brightness = pdata->default_brightness;
|
||||||
|
bd = backlight_device_register(pdata->name, pdev->dev.parent, bl,
|
||||||
|
&lm3533_bl_ops, &props);
|
||||||
|
if (IS_ERR(bd)) {
|
||||||
|
dev_err(&pdev->dev, "failed to register backlight device\n");
|
||||||
|
ret = PTR_ERR(bd);
|
||||||
|
goto err_free;
|
||||||
|
}
|
||||||
|
|
||||||
|
bl->bd = bd;
|
||||||
|
bl->cb.dev = &bl->bd->dev;
|
||||||
|
|
||||||
|
platform_set_drvdata(pdev, bl);
|
||||||
|
|
||||||
|
ret = sysfs_create_group(&bd->dev.kobj, &lm3533_bl_attribute_group);
|
||||||
|
if (ret < 0) {
|
||||||
|
dev_err(&pdev->dev, "failed to create sysfs attributes\n");
|
||||||
|
goto err_unregister;
|
||||||
|
}
|
||||||
|
|
||||||
|
backlight_update_status(bd);
|
||||||
|
|
||||||
|
ret = lm3533_bl_setup(bl, pdata);
|
||||||
|
if (ret)
|
||||||
|
goto err_sysfs_remove;
|
||||||
|
|
||||||
|
ret = lm3533_ctrlbank_enable(&bl->cb);
|
||||||
|
if (ret)
|
||||||
|
goto err_sysfs_remove;
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
err_sysfs_remove:
|
||||||
|
sysfs_remove_group(&bd->dev.kobj, &lm3533_bl_attribute_group);
|
||||||
|
err_unregister:
|
||||||
|
backlight_device_unregister(bd);
|
||||||
|
err_free:
|
||||||
|
kfree(bl);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int __devexit lm3533_bl_remove(struct platform_device *pdev)
|
||||||
|
{
|
||||||
|
struct lm3533_bl *bl = platform_get_drvdata(pdev);
|
||||||
|
struct backlight_device *bd = bl->bd;
|
||||||
|
|
||||||
|
dev_dbg(&bd->dev, "%s\n", __func__);
|
||||||
|
|
||||||
|
bd->props.power = FB_BLANK_POWERDOWN;
|
||||||
|
bd->props.brightness = 0;
|
||||||
|
|
||||||
|
lm3533_ctrlbank_disable(&bl->cb);
|
||||||
|
sysfs_remove_group(&bd->dev.kobj, &lm3533_bl_attribute_group);
|
||||||
|
backlight_device_unregister(bd);
|
||||||
|
kfree(bl);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef CONFIG_PM
|
||||||
|
static int lm3533_bl_suspend(struct platform_device *pdev, pm_message_t state)
|
||||||
|
{
|
||||||
|
struct lm3533_bl *bl = platform_get_drvdata(pdev);
|
||||||
|
|
||||||
|
dev_dbg(&pdev->dev, "%s\n", __func__);
|
||||||
|
|
||||||
|
return lm3533_ctrlbank_disable(&bl->cb);
|
||||||
|
}
|
||||||
|
|
||||||
|
static int lm3533_bl_resume(struct platform_device *pdev)
|
||||||
|
{
|
||||||
|
struct lm3533_bl *bl = platform_get_drvdata(pdev);
|
||||||
|
|
||||||
|
dev_dbg(&pdev->dev, "%s\n", __func__);
|
||||||
|
|
||||||
|
return lm3533_ctrlbank_enable(&bl->cb);
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
#define lm3533_bl_suspend NULL
|
||||||
|
#define lm3533_bl_resume NULL
|
||||||
|
#endif
|
||||||
|
|
||||||
|
static void lm3533_bl_shutdown(struct platform_device *pdev)
|
||||||
|
{
|
||||||
|
struct lm3533_bl *bl = platform_get_drvdata(pdev);
|
||||||
|
|
||||||
|
dev_dbg(&pdev->dev, "%s\n", __func__);
|
||||||
|
|
||||||
|
lm3533_ctrlbank_disable(&bl->cb);
|
||||||
|
}
|
||||||
|
|
||||||
|
static struct platform_driver lm3533_bl_driver = {
|
||||||
|
.driver = {
|
||||||
|
.name = "lm3533-backlight",
|
||||||
|
.owner = THIS_MODULE,
|
||||||
|
},
|
||||||
|
.probe = lm3533_bl_probe,
|
||||||
|
.remove = __devexit_p(lm3533_bl_remove),
|
||||||
|
.shutdown = lm3533_bl_shutdown,
|
||||||
|
.suspend = lm3533_bl_suspend,
|
||||||
|
.resume = lm3533_bl_resume,
|
||||||
|
};
|
||||||
|
module_platform_driver(lm3533_bl_driver);
|
||||||
|
|
||||||
|
MODULE_AUTHOR("Johan Hovold <jhovold@gmail.com>");
|
||||||
|
MODULE_DESCRIPTION("LM3533 Backlight driver");
|
||||||
|
MODULE_LICENSE("GPL");
|
||||||
|
MODULE_ALIAS("platform:lm3533-backlight");
|
||||||
Reference in New Issue
Block a user