Commit 655bfd7a authored by Richard Purdie's avatar Richard Purdie

backlight: Convert from struct class_device to struct device

Convert the backlight and LCD classes from struct class_device
to struct device since class_device is scheduled for removal.

One nasty API break is the backlight power attribute has had to be
renamed to bl_power and the LCD power attribute has had to be renamed
to lcd_power since the original names clash with the core. I can't see
a way around this.
Signed-off-by: default avatarRichard Purdie <rpurdie@rpsys.net>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent fa9133c2
......@@ -278,7 +278,7 @@ static int acpi_video_get_brightness(struct backlight_device *bd)
{
unsigned long cur_level;
struct acpi_video_device *vd =
(struct acpi_video_device *)class_get_devdata(&bd->class_dev);
(struct acpi_video_device *)bl_get_data(bd);
acpi_video_device_lcd_get_level_current(vd, &cur_level);
return (int) cur_level;
}
......@@ -287,7 +287,7 @@ static int acpi_video_set_brightness(struct backlight_device *bd)
{
int request_level = bd->props.brightness;
struct acpi_video_device *vd =
(struct acpi_video_device *)class_get_devdata(&bd->class_dev);
(struct acpi_video_device *)bl_get_data(bd);
acpi_video_device_lcd_set_level(vd, request_level);
return 0;
}
......
......@@ -137,7 +137,7 @@ static void appledisplay_complete(struct urb *urb)
static int appledisplay_bl_update_status(struct backlight_device *bd)
{
struct appledisplay *pdata = class_get_devdata(&bd->class_dev);
struct appledisplay *pdata = bl_get_data(bd);
int retval;
pdata->msgdata[0] = 0x10;
......@@ -158,7 +158,7 @@ static int appledisplay_bl_update_status(struct backlight_device *bd)
static int appledisplay_bl_get_brightness(struct backlight_device *bd)
{
struct appledisplay *pdata = class_get_devdata(&bd->class_dev);
struct appledisplay *pdata = bl_get_data(bd);
int retval;
retval = usb_control_msg(
......
......@@ -1733,7 +1733,7 @@ static int aty128_bl_get_level_brightness(struct aty128fb_par *par,
static int aty128_bl_update_status(struct backlight_device *bd)
{
struct aty128fb_par *par = class_get_devdata(&bd->class_dev);
struct aty128fb_par *par = bl_get_data(bd);
unsigned int reg = aty_ld_le32(LVDS_GEN_CNTL);
int level;
......
......@@ -2141,7 +2141,7 @@ static int aty_bl_get_level_brightness(struct atyfb_par *par, int level)
static int aty_bl_update_status(struct backlight_device *bd)
{
struct atyfb_par *par = class_get_devdata(&bd->class_dev);
struct atyfb_par *par = bl_get_data(bd);
unsigned int reg = aty_ld_lcd(LCD_MISC_CNTL, par);
int level;
......
......@@ -47,7 +47,7 @@ static int radeon_bl_get_level_brightness(struct radeon_bl_privdata *pdata,
static int radeon_bl_update_status(struct backlight_device *bd)
{
struct radeon_bl_privdata *pdata = class_get_devdata(&bd->class_dev);
struct radeon_bl_privdata *pdata = bl_get_data(bd);
struct radeonfb_info *rinfo = pdata->rinfo;
u32 lvds_gen_cntl, tmpPixclksCntl;
int level;
......@@ -206,7 +206,7 @@ void radeonfb_bl_exit(struct radeonfb_info *rinfo)
if (bd) {
struct radeon_bl_privdata *pdata;
pdata = class_get_devdata(&bd->class_dev);
pdata = bl_get_data(bd);
backlight_device_unregister(bd);
kfree(pdata);
rinfo->info->bl_dev = NULL;
......
......@@ -69,18 +69,20 @@ static inline void backlight_unregister_fb(struct backlight_device *bd)
}
#endif /* CONFIG_FB */
static ssize_t backlight_show_power(struct class_device *cdev, char *buf)
static ssize_t backlight_show_power(struct device *dev,
struct device_attribute *attr,char *buf)
{
struct backlight_device *bd = to_backlight_device(cdev);
struct backlight_device *bd = to_backlight_device(dev);
return sprintf(buf, "%d\n", bd->props.power);
}
static ssize_t backlight_store_power(struct class_device *cdev, const char *buf, size_t count)
static ssize_t backlight_store_power(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
int rc = -ENXIO;
char *endp;
struct backlight_device *bd = to_backlight_device(cdev);
struct backlight_device *bd = to_backlight_device(dev);
int power = simple_strtoul(buf, &endp, 0);
size_t size = endp - buf;
......@@ -101,18 +103,20 @@ static ssize_t backlight_store_power(struct class_device *cdev, const char *buf,
return rc;
}
static ssize_t backlight_show_brightness(struct class_device *cdev, char *buf)
static ssize_t backlight_show_brightness(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct backlight_device *bd = to_backlight_device(cdev);
struct backlight_device *bd = to_backlight_device(dev);
return sprintf(buf, "%d\n", bd->props.brightness);
}
static ssize_t backlight_store_brightness(struct class_device *cdev, const char *buf, size_t count)
static ssize_t backlight_store_brightness(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
int rc = -ENXIO;
char *endp;
struct backlight_device *bd = to_backlight_device(cdev);
struct backlight_device *bd = to_backlight_device(dev);
int brightness = simple_strtoul(buf, &endp, 0);
size_t size = endp - buf;
......@@ -138,18 +142,19 @@ static ssize_t backlight_store_brightness(struct class_device *cdev, const char
return rc;
}
static ssize_t backlight_show_max_brightness(struct class_device *cdev, char *buf)
static ssize_t backlight_show_max_brightness(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct backlight_device *bd = to_backlight_device(cdev);
struct backlight_device *bd = to_backlight_device(dev);
return sprintf(buf, "%d\n", bd->props.max_brightness);
}
static ssize_t backlight_show_actual_brightness(struct class_device *cdev,
char *buf)
static ssize_t backlight_show_actual_brightness(struct device *dev,
struct device_attribute *attr, char *buf)
{
int rc = -ENXIO;
struct backlight_device *bd = to_backlight_device(cdev);
struct backlight_device *bd = to_backlight_device(dev);
mutex_lock(&bd->ops_lock);
if (bd->ops && bd->ops->get_brightness)
......@@ -159,31 +164,22 @@ static ssize_t backlight_show_actual_brightness(struct class_device *cdev,
return rc;
}
static void backlight_class_release(struct class_device *dev)
struct class *backlight_class;
static void bl_device_release(struct device *dev)
{
struct backlight_device *bd = to_backlight_device(dev);
kfree(bd);
}
static struct class backlight_class = {
.name = "backlight",
.release = backlight_class_release,
};
#define DECLARE_ATTR(_name,_mode,_show,_store) \
{ \
.attr = { .name = __stringify(_name), .mode = _mode }, \
.show = _show, \
.store = _store, \
}
static const struct class_device_attribute bl_class_device_attributes[] = {
DECLARE_ATTR(power, 0644, backlight_show_power, backlight_store_power),
DECLARE_ATTR(brightness, 0644, backlight_show_brightness,
static struct device_attribute bl_device_attributes[] = {
__ATTR(bl_power, 0644, backlight_show_power, backlight_store_power),
__ATTR(brightness, 0644, backlight_show_brightness,
backlight_store_brightness),
DECLARE_ATTR(actual_brightness, 0444, backlight_show_actual_brightness,
__ATTR(actual_brightness, 0444, backlight_show_actual_brightness,
NULL),
DECLARE_ATTR(max_brightness, 0444, backlight_show_max_brightness, NULL),
__ATTR(max_brightness, 0444, backlight_show_max_brightness, NULL),
__ATTR_NULL,
};
/**
......@@ -191,22 +187,20 @@ static const struct class_device_attribute bl_class_device_attributes[] = {
* backlight_device class.
* @name: the name of the new object(must be the same as the name of the
* respective framebuffer device).
* @devdata: an optional pointer to be stored in the class_device. The
* methods may retrieve it by using class_get_devdata(&bd->class_dev).
* @devdata: an optional pointer to be stored for private driver use. The
* methods may retrieve it by using bl_get_data(bd).
* @ops: the backlight operations structure.
*
* Creates and registers new backlight class_device. Returns either an
* Creates and registers new backlight device. Returns either an
* ERR_PTR() or a pointer to the newly allocated device.
*/
struct backlight_device *backlight_device_register(const char *name,
struct device *dev,
void *devdata,
struct backlight_ops *ops)
struct device *parent, void *devdata, struct backlight_ops *ops)
{
int i, rc;
struct backlight_device *new_bd;
int rc;
pr_debug("backlight_device_alloc: name=%s\n", name);
pr_debug("backlight_device_register: name=%s\n", name);
new_bd = kzalloc(sizeof(struct backlight_device), GFP_KERNEL);
if (!new_bd)
......@@ -214,13 +208,14 @@ struct backlight_device *backlight_device_register(const char *name,
mutex_init(&new_bd->update_lock);
mutex_init(&new_bd->ops_lock);
new_bd->ops = ops;
new_bd->class_dev.class = &backlight_class;
new_bd->class_dev.dev = dev;
strlcpy(new_bd->class_dev.class_id, name, KOBJ_NAME_LEN);
class_set_devdata(&new_bd->class_dev, devdata);
rc = class_device_register(&new_bd->class_dev);
new_bd->dev.class = backlight_class;
new_bd->dev.parent = parent;
new_bd->dev.release = bl_device_release;
strlcpy(new_bd->dev.bus_id, name, BUS_ID_SIZE);
dev_set_drvdata(&new_bd->dev, devdata);
rc = device_register(&new_bd->dev);
if (rc) {
kfree(new_bd);
return ERR_PTR(rc);
......@@ -228,23 +223,11 @@ struct backlight_device *backlight_device_register(const char *name,
rc = backlight_register_fb(new_bd);
if (rc) {
class_device_unregister(&new_bd->class_dev);
device_unregister(&new_bd->dev);
return ERR_PTR(rc);
}
for (i = 0; i < ARRAY_SIZE(bl_class_device_attributes); i++) {
rc = class_device_create_file(&new_bd->class_dev,
&bl_class_device_attributes[i]);
if (rc) {
while (--i >= 0)
class_device_remove_file(&new_bd->class_dev,
&bl_class_device_attributes[i]);
class_device_unregister(&new_bd->class_dev);
/* No need to kfree(new_bd) since release() method was called */
return ERR_PTR(rc);
}
}
new_bd->ops = ops;
#ifdef CONFIG_PMAC_BACKLIGHT
mutex_lock(&pmac_backlight_mutex);
......@@ -265,42 +248,40 @@ EXPORT_SYMBOL(backlight_device_register);
*/
void backlight_device_unregister(struct backlight_device *bd)
{
int i;
if (!bd)
return;
pr_debug("backlight_device_unregister: name=%s\n", bd->class_dev.class_id);
#ifdef CONFIG_PMAC_BACKLIGHT
mutex_lock(&pmac_backlight_mutex);
if (pmac_backlight == bd)
pmac_backlight = NULL;
mutex_unlock(&pmac_backlight_mutex);
#endif
for (i = 0; i < ARRAY_SIZE(bl_class_device_attributes); i++)
class_device_remove_file(&bd->class_dev,
&bl_class_device_attributes[i]);
mutex_lock(&bd->ops_lock);
bd->ops = NULL;
mutex_unlock(&bd->ops_lock);
backlight_unregister_fb(bd);
class_device_unregister(&bd->class_dev);
device_unregister(&bd->dev);
}
EXPORT_SYMBOL(backlight_device_unregister);
static void __exit backlight_class_exit(void)
{
class_unregister(&backlight_class);
class_destroy(backlight_class);
}
static int __init backlight_class_init(void)
{
return class_register(&backlight_class);
backlight_class = class_create(THIS_MODULE, "backlight");
if (IS_ERR(backlight_class)) {
printk(KERN_WARNING "Unable to create backlight class; errno = %ld\n",
PTR_ERR(backlight_class));
return PTR_ERR(backlight_class);
}
backlight_class->dev_attrs = bl_device_attributes;
return 0;
}
/*
......
......@@ -202,7 +202,7 @@ static int cr_backlight_probe(struct platform_device *pdev)
}
crp->cr_lcd_device = lcd_device_register("cr-lcd",
&pdev->dev,
&pdev->dev, NULL
&cr_lcd_ops);
if (IS_ERR(crp->cr_lcd_device)) {
......
......@@ -61,10 +61,11 @@ static inline void lcd_unregister_fb(struct lcd_device *ld)
}
#endif /* CONFIG_FB */
static ssize_t lcd_show_power(struct class_device *cdev, char *buf)
static ssize_t lcd_show_power(struct device *dev, struct device_attribute *attr,
char *buf)
{
int rc;
struct lcd_device *ld = to_lcd_device(cdev);
struct lcd_device *ld = to_lcd_device(dev);
mutex_lock(&ld->ops_lock);
if (ld->ops && ld->ops->get_power)
......@@ -76,11 +77,12 @@ static ssize_t lcd_show_power(struct class_device *cdev, char *buf)
return rc;
}
static ssize_t lcd_store_power(struct class_device *cdev, const char *buf, size_t count)
static ssize_t lcd_store_power(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
int rc = -ENXIO;
char *endp;
struct lcd_device *ld = to_lcd_device(cdev);
struct lcd_device *ld = to_lcd_device(dev);
int power = simple_strtoul(buf, &endp, 0);
size_t size = endp - buf;
......@@ -100,10 +102,11 @@ static ssize_t lcd_store_power(struct class_device *cdev, const char *buf, size_
return rc;
}
static ssize_t lcd_show_contrast(struct class_device *cdev, char *buf)
static ssize_t lcd_show_contrast(struct device *dev,
struct device_attribute *attr, char *buf)
{
int rc = -ENXIO;
struct lcd_device *ld = to_lcd_device(cdev);
struct lcd_device *ld = to_lcd_device(dev);
mutex_lock(&ld->ops_lock);
if (ld->ops && ld->ops->get_contrast)
......@@ -113,11 +116,12 @@ static ssize_t lcd_show_contrast(struct class_device *cdev, char *buf)
return rc;
}
static ssize_t lcd_store_contrast(struct class_device *cdev, const char *buf, size_t count)
static ssize_t lcd_store_contrast(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
int rc = -ENXIO;
char *endp;
struct lcd_device *ld = to_lcd_device(cdev);
struct lcd_device *ld = to_lcd_device(dev);
int contrast = simple_strtoul(buf, &endp, 0);
size_t size = endp - buf;
......@@ -137,53 +141,45 @@ static ssize_t lcd_store_contrast(struct class_device *cdev, const char *buf, si
return rc;
}
static ssize_t lcd_show_max_contrast(struct class_device *cdev, char *buf)
static ssize_t lcd_show_max_contrast(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct lcd_device *ld = to_lcd_device(cdev);
struct lcd_device *ld = to_lcd_device(dev);
return sprintf(buf, "%d\n", ld->props.max_contrast);
}
static void lcd_class_release(struct class_device *dev)
struct class *lcd_class;
static void lcd_device_release(struct device *dev)
{
struct lcd_device *ld = to_lcd_device(dev);
kfree(ld);
}
static struct class lcd_class = {
.name = "lcd",
.release = lcd_class_release,
};
#define DECLARE_ATTR(_name,_mode,_show,_store) \
{ \
.attr = { .name = __stringify(_name), .mode = _mode }, \
.show = _show, \
.store = _store, \
}
static const struct class_device_attribute lcd_class_device_attributes[] = {
DECLARE_ATTR(power, 0644, lcd_show_power, lcd_store_power),
DECLARE_ATTR(contrast, 0644, lcd_show_contrast, lcd_store_contrast),
DECLARE_ATTR(max_contrast, 0444, lcd_show_max_contrast, NULL),
static struct device_attribute lcd_device_attributes[] = {
__ATTR(lcd_power, 0644, lcd_show_power, lcd_store_power),
__ATTR(contrast, 0644, lcd_show_contrast, lcd_store_contrast),
__ATTR(max_contrast, 0444, lcd_show_max_contrast, NULL),
__ATTR_NULL,
};
/**
* lcd_device_register - register a new object of lcd_device class.
* @name: the name of the new object(must be the same as the name of the
* respective framebuffer device).
* @devdata: an optional pointer to be stored in the class_device. The
* methods may retrieve it by using class_get_devdata(ld->class_dev).
* @devdata: an optional pointer to be stored in the device. The
* methods may retrieve it by using lcd_get_data(ld).
* @ops: the lcd operations structure.
*
* Creates and registers a new lcd class_device. Returns either an ERR_PTR()
* Creates and registers a new lcd device. Returns either an ERR_PTR()
* or a pointer to the newly allocated device.
*/
struct lcd_device *lcd_device_register(const char *name, void *devdata,
struct lcd_ops *ops)
struct lcd_device *lcd_device_register(const char *name, struct device *parent,
void *devdata, struct lcd_ops *ops)
{
int i, rc;
struct lcd_device *new_ld;
int rc;
pr_debug("lcd_device_register: name=%s\n", name);
......@@ -193,12 +189,14 @@ struct lcd_device *lcd_device_register(const char *name, void *devdata,
mutex_init(&new_ld->ops_lock);
mutex_init(&new_ld->update_lock);
new_ld->ops = ops;
new_ld->class_dev.class = &lcd_class;
strlcpy(new_ld->class_dev.class_id, name, KOBJ_NAME_LEN);
class_set_devdata(&new_ld->class_dev, devdata);
rc = class_device_register(&new_ld->class_dev);
new_ld->dev.class = lcd_class;
new_ld->dev.parent = parent;
new_ld->dev.release = lcd_device_release;
strlcpy(new_ld->dev.bus_id, name, BUS_ID_SIZE);
dev_set_drvdata(&new_ld->dev, devdata);
rc = device_register(&new_ld->dev);
if (rc) {
kfree(new_ld);
return ERR_PTR(rc);
......@@ -206,22 +204,11 @@ struct lcd_device *lcd_device_register(const char *name, void *devdata,
rc = lcd_register_fb(new_ld);
if (rc) {
class_device_unregister(&new_ld->class_dev);
device_unregister(&new_ld->dev);
return ERR_PTR(rc);
}
for (i = 0; i < ARRAY_SIZE(lcd_class_device_attributes); i++) {
rc = class_device_create_file(&new_ld->class_dev,
&lcd_class_device_attributes[i]);
if (rc) {
while (--i >= 0)
class_device_remove_file(&new_ld->class_dev,
&lcd_class_device_attributes[i]);
class_device_unregister(&new_ld->class_dev);
/* No need to kfree(new_ld) since release() method was called */
return ERR_PTR(rc);
}
}
new_ld->ops = ops;
return new_ld;
}
......@@ -235,33 +222,34 @@ EXPORT_SYMBOL(lcd_device_register);
*/
void lcd_device_unregister(struct lcd_device *ld)
{
int i;
if (!ld)
return;
pr_debug("lcd_device_unregister: name=%s\n", ld->class_dev.class_id);
for (i = 0; i < ARRAY_SIZE(lcd_class_device_attributes); i++)
class_device_remove_file(&ld->class_dev,
&lcd_class_device_attributes[i]);
mutex_lock(&ld->ops_lock);
ld->ops = NULL;
mutex_unlock(&ld->ops_lock);
lcd_unregister_fb(ld);
class_device_unregister(&ld->class_dev);
device_unregister(&ld->dev);
}
EXPORT_SYMBOL(lcd_device_unregister);
static void __exit lcd_class_exit(void)
{
class_unregister(&lcd_class);
class_destroy(lcd_class);
}
static int __init lcd_class_init(void)
{
return class_register(&lcd_class);
lcd_class = class_create(THIS_MODULE, "lcd");
if (IS_ERR(lcd_class)) {
printk(KERN_WARNING "Unable to create backlight class; errno = %ld\n",
PTR_ERR(lcd_class));
return PTR_ERR(lcd_class);
}
lcd_class->dev_attrs = lcd_device_attributes;
return 0;
}
/*
......
......@@ -50,7 +50,7 @@ static int nvidia_bl_get_level_brightness(struct nvidia_par *par,
static int nvidia_bl_update_status(struct backlight_device *bd)
{
struct nvidia_par *par = class_get_devdata(&bd->class_dev);
struct nvidia_par *par = bl_get_data(bd);
u32 tmp_pcrt, tmp_pmc, fpcontrol;
int level;
......
......@@ -307,7 +307,7 @@ static int riva_bl_get_level_brightness(struct riva_par *par,
static int riva_bl_update_status(struct backlight_device *bd)
{
struct riva_par *par = class_get_devdata(&bd->class_dev);
struct riva_par *par = bl_get_data(bd);
U032 tmp_pcrt, tmp_pmc;
int level;
......
......@@ -69,8 +69,8 @@ struct backlight_device {
/* The framebuffer notifier block */
struct notifier_block fb_notif;
/* The class device structure */
struct class_device class_dev;
struct device dev;
};
static inline void backlight_update_status(struct backlight_device *bd)
......@@ -85,6 +85,11 @@ extern struct backlight_device *backlight_device_register(const char *name,
struct device *dev, void *devdata, struct backlight_ops *ops);
extern void backlight_device_unregister(struct backlight_device *bd);
#define to_backlight_device(obj) container_of(obj, struct backlight_device, class_dev)
#define to_backlight_device(obj) container_of(obj, struct backlight_device, dev)
static inline void * bl_get_data(struct backlight_device *bl_dev)
{
return dev_get_drvdata(&bl_dev->dev);
}
#endif
......@@ -62,8 +62,8 @@ struct lcd_device {
struct mutex update_lock;
/* The framebuffer notifier block */
struct notifier_block fb_notif;
/* The class device structure */
struct class_device class_dev;
struct device dev;
};
static inline void lcd_set_power(struct lcd_device *ld, int power)
......@@ -75,9 +75,15 @@ static inline void lcd_set_power(struct lcd_device *ld, int power)
}
extern struct lcd_device *lcd_device_register(const char *name,
void *devdata, struct lcd_ops *ops);
struct device *parent, void *devdata, struct lcd_ops *ops);
extern void lcd_device_unregister(struct lcd_device *ld);
#define to_lcd_device(obj) container_of(obj, struct lcd_device, class_dev)
#define to_lcd_device(obj) container_of(obj, struct lcd_device, dev)
static inline void * lcd_get_data(struct lcd_device *ld_dev)
{
return dev_get_drvdata(&ld_dev->dev);
}
#endif
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment