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Driver core: convert fb code to use struct device

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Converts from using struct "class_device" to "struct device" making
everything show up properly in /sys/devices/ with symlinks from the
/sys/class directory.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman 2006-09-14 07:30:59 -07:00
parent e55c8790d4
commit 78cde08879
3 changed files with 103 additions and 84 deletions
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16
drivers/video/fbmem.c
View file

@ -1296,14 +1296,14 @@ register_framebuffer(struct fb_info *fb_info)
break;
fb_info->node = i;
fb_info->class_device = class_device_create(fb_class, NULL, MKDEV(FB_MAJOR, i),
fb_info->device, "fb%d", i);
if (IS_ERR(fb_info->class_device)) {
fb_info->dev = device_create(fb_class, fb_info->device,
MKDEV(FB_MAJOR, i), "fb%d", i);
if (IS_ERR(fb_info->dev)) {
/* Not fatal */
printk(KERN_WARNING "Unable to create class_device for framebuffer %d; errno = %ld\n", i, PTR_ERR(fb_info->class_device));
fb_info->class_device = NULL;
printk(KERN_WARNING "Unable to create device for framebuffer %d; errno = %ld\n", i, PTR_ERR(fb_info->dev));
fb_info->dev = NULL;
} else
fb_init_class_device(fb_info);
fb_init_device(fb_info);
if (fb_info->pixmap.addr == NULL) {
fb_info->pixmap.addr = kmalloc(FBPIXMAPSIZE, GFP_KERNEL);
@ -1356,8 +1356,8 @@ unregister_framebuffer(struct fb_info *fb_info)
fb_destroy_modelist(&fb_info->modelist);
registered_fb[i]=NULL;
num_registered_fb--;
fb_cleanup_class_device(fb_info);
class_device_destroy(fb_class, MKDEV(FB_MAJOR, i));
fb_cleanup_device(fb_info);
device_destroy(fb_class, MKDEV(FB_MAJOR, i));
event.info = fb_info;
fb_notifier_call_chain(FB_EVENT_FB_UNREGISTERED, &event);
return 0;

153
drivers/video/fbsysfs.c
View file

@ -73,7 +73,7 @@ EXPORT_SYMBOL(framebuffer_alloc);
*
* @info: frame buffer info structure
*
* Drop the reference count of the class_device embedded in the
* Drop the reference count of the device embedded in the
* framebuffer info structure.
*
*/
@ -120,10 +120,10 @@ static int mode_string(char *buf, unsigned int offset,
m, mode->xres, mode->yres, v, mode->refresh);
}
static ssize_t store_mode(struct class_device *class_device, const char * buf,
size_t count)
static ssize_t store_mode(struct device *device, struct device_attribute *attr,
const char *buf, size_t count)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
char mstr[100];
struct fb_var_screeninfo var;
struct fb_modelist *modelist;
@ -151,9 +151,10 @@ static ssize_t store_mode(struct class_device *class_device, const char * buf,
return -EINVAL;
}
static ssize_t show_mode(struct class_device *class_device, char *buf)
static ssize_t show_mode(struct device *device, struct device_attribute *attr,
char *buf)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
if (!fb_info->mode)
return 0;
@ -161,10 +162,11 @@ static ssize_t show_mode(struct class_device *class_device, char *buf)
return mode_string(buf, 0, fb_info->mode);
}
static ssize_t store_modes(struct class_device *class_device, const char * buf,
size_t count)
static ssize_t store_modes(struct device *device,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
LIST_HEAD(old_list);
int i = count / sizeof(struct fb_videomode);
@ -186,9 +188,10 @@ static ssize_t store_modes(struct class_device *class_device, const char * buf,
return 0;
}
static ssize_t show_modes(struct class_device *class_device, char *buf)
static ssize_t show_modes(struct device *device, struct device_attribute *attr,
char *buf)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
unsigned int i;
struct list_head *pos;
struct fb_modelist *modelist;
@ -203,10 +206,10 @@ static ssize_t show_modes(struct class_device *class_device, char *buf)
return i;
}
static ssize_t store_bpp(struct class_device *class_device, const char * buf,
size_t count)
static ssize_t store_bpp(struct device *device, struct device_attribute *attr,
const char *buf, size_t count)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
struct fb_var_screeninfo var;
char ** last = NULL;
int err;
@ -218,16 +221,18 @@ static ssize_t store_bpp(struct class_device *class_device, const char * buf,
return count;
}
static ssize_t show_bpp(struct class_device *class_device, char *buf)
static ssize_t show_bpp(struct device *device, struct device_attribute *attr,
char *buf)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
return snprintf(buf, PAGE_SIZE, "%d\n", fb_info->var.bits_per_pixel);
}
static ssize_t store_rotate(struct class_device *class_device, const char *buf,
size_t count)
static ssize_t store_rotate(struct device *device,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
struct fb_var_screeninfo var;
char **last = NULL;
int err;
@ -242,17 +247,19 @@ static ssize_t store_rotate(struct class_device *class_device, const char *buf,
}
static ssize_t show_rotate(struct class_device *class_device, char *buf)
static ssize_t show_rotate(struct device *device,
struct device_attribute *attr, char *buf)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
return snprintf(buf, PAGE_SIZE, "%d\n", fb_info->var.rotate);
}
static ssize_t store_virtual(struct class_device *class_device,
static ssize_t store_virtual(struct device *device,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
struct fb_var_screeninfo var;
char *last = NULL;
int err;
@ -269,23 +276,26 @@ static ssize_t store_virtual(struct class_device *class_device,
return count;
}
static ssize_t show_virtual(struct class_device *class_device, char *buf)
static ssize_t show_virtual(struct device *device,
struct device_attribute *attr, char *buf)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
return snprintf(buf, PAGE_SIZE, "%d,%d\n", fb_info->var.xres_virtual,
fb_info->var.yres_virtual);
}
static ssize_t show_stride(struct class_device *class_device, char *buf)
static ssize_t show_stride(struct device *device,
struct device_attribute *attr, char *buf)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
return snprintf(buf, PAGE_SIZE, "%d\n", fb_info->fix.line_length);
}
static ssize_t store_blank(struct class_device *class_device, const char * buf,
size_t count)
static ssize_t store_blank(struct device *device,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
char *last = NULL;
int err;
@ -299,42 +309,48 @@ static ssize_t store_blank(struct class_device *class_device, const char * buf,
return count;
}
static ssize_t show_blank(struct class_device *class_device, char *buf)
static ssize_t show_blank(struct device *device,
struct device_attribute *attr, char *buf)
{
// struct fb_info *fb_info = class_get_devdata(class_device);
// struct fb_info *fb_info = dev_get_drvdata(device);
return 0;
}
static ssize_t store_console(struct class_device *class_device,
static ssize_t store_console(struct device *device,
struct device_attribute *attr,
const char *buf, size_t count)
{
// struct fb_info *fb_info = class_get_devdata(class_device);
// struct fb_info *fb_info = dev_get_drvdata(device);
return 0;
}
static ssize_t show_console(struct class_device *class_device, char *buf)
static ssize_t show_console(struct device *device,
struct device_attribute *attr, char *buf)
{
// struct fb_info *fb_info = class_get_devdata(class_device);
// struct fb_info *fb_info = dev_get_drvdata(device);
return 0;
}
static ssize_t store_cursor(struct class_device *class_device,
static ssize_t store_cursor(struct device *device,
struct device_attribute *attr,
const char *buf, size_t count)
{
// struct fb_info *fb_info = class_get_devdata(class_device);
// struct fb_info *fb_info = dev_get_drvdata(device);
return 0;
}
static ssize_t show_cursor(struct class_device *class_device, char *buf)
static ssize_t show_cursor(struct device *device,
struct device_attribute *attr, char *buf)
{
// struct fb_info *fb_info = class_get_devdata(class_device);
// struct fb_info *fb_info = dev_get_drvdata(device);
return 0;
}
static ssize_t store_pan(struct class_device *class_device, const char * buf,
size_t count)
static ssize_t store_pan(struct device *device,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
struct fb_var_screeninfo var;
char *last = NULL;
int err;
@ -355,24 +371,27 @@ static ssize_t store_pan(struct class_device *class_device, const char * buf,
return count;
}
static ssize_t show_pan(struct class_device *class_device, char *buf)
static ssize_t show_pan(struct device *device,
struct device_attribute *attr, char *buf)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
return snprintf(buf, PAGE_SIZE, "%d,%d\n", fb_info->var.xoffset,
fb_info->var.xoffset);
}
static ssize_t show_name(struct class_device *class_device, char *buf)
static ssize_t show_name(struct device *device,
struct device_attribute *attr, char *buf)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
return snprintf(buf, PAGE_SIZE, "%s\n", fb_info->fix.id);
}
static ssize_t store_fbstate(struct class_device *class_device,
static ssize_t store_fbstate(struct device *device,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
u32 state;
char *last = NULL;
@ -385,17 +404,19 @@ static ssize_t store_fbstate(struct class_device *class_device,
return count;
}
static ssize_t show_fbstate(struct class_device *class_device, char *buf)
static ssize_t show_fbstate(struct device *device,
struct device_attribute *attr, char *buf)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
return snprintf(buf, PAGE_SIZE, "%d\n", fb_info->state);
}
#ifdef CONFIG_FB_BACKLIGHT
static ssize_t store_bl_curve(struct class_device *class_device,
static ssize_t store_bl_curve(struct device *device,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
u8 tmp_curve[FB_BACKLIGHT_LEVELS];
unsigned int i;
@ -432,9 +453,10 @@ static ssize_t store_bl_curve(struct class_device *class_device,
return count;
}
static ssize_t show_bl_curve(struct class_device *class_device, char *buf)
static ssize_t show_bl_curve(struct device *device,
struct device_attribute *attr, char *buf)
{
struct fb_info *fb_info = class_get_devdata(class_device);
struct fb_info *fb_info = dev_get_drvdata(device);
ssize_t len = 0;
unsigned int i;
@ -465,7 +487,7 @@ static ssize_t show_bl_curve(struct class_device *class_device, char *buf)
/* When cmap is added back in it should be a binary attribute
* not a text one. Consideration should also be given to converting
* fbdev to use configfs instead of sysfs */
static struct class_device_attribute class_device_attrs[] = {
static struct device_attribute device_attrs[] = {
__ATTR(bits_per_pixel, S_IRUGO|S_IWUSR, show_bpp, store_bpp),
__ATTR(blank, S_IRUGO|S_IWUSR, show_blank, store_blank),
__ATTR(console, S_IRUGO|S_IWUSR, show_console, store_console),
@ -483,17 +505,16 @@ static struct class_device_attribute class_device_attrs[] = {
#endif
};
int fb_init_class_device(struct fb_info *fb_info)
int fb_init_device(struct fb_info *fb_info)
{
int i, error = 0;
class_set_devdata(fb_info->class_device, fb_info);
dev_set_drvdata(fb_info->dev, fb_info);
fb_info->class_flag |= FB_SYSFS_FLAG_ATTR;
for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++) {
error = class_device_create_file(fb_info->class_device,
&class_device_attrs[i]);
for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
error = device_create_file(fb_info->dev, &device_attrs[i]);
if (error)
break;
@ -501,22 +522,20 @@ int fb_init_class_device(struct fb_info *fb_info)
if (error) {
while (--i >= 0)
class_device_remove_file(fb_info->class_device,
&class_device_attrs[i]);
device_remove_file(fb_info->dev, &device_attrs[i]);
fb_info->class_flag &= ~FB_SYSFS_FLAG_ATTR;
}
return 0;
}
void fb_cleanup_class_device(struct fb_info *fb_info)
void fb_cleanup_device(struct fb_info *fb_info)
{
unsigned int i;
if (fb_info->class_flag & FB_SYSFS_FLAG_ATTR) {
for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
class_device_remove_file(fb_info->class_device,
&class_device_attrs[i]);
for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
device_remove_file(fb_info->dev, &device_attrs[i]);
fb_info->class_flag &= ~FB_SYSFS_FLAG_ATTR;
}

8
include/linux/fb.h
View file

@ -774,8 +774,8 @@ struct fb_info {
#endif
struct fb_ops *fbops;
struct device *device;
struct class_device *class_device; /* sysfs per device attrs */
struct device *device; /* This is the parent */
struct device *dev; /* This is this fb device */
int class_flag; /* private sysfs flags */
#ifdef CONFIG_FB_TILEBLITTING
struct fb_tile_ops *tileops; /* Tile Blitting */
@ -910,8 +910,8 @@ static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
/* drivers/video/fbsysfs.c */
extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
extern void framebuffer_release(struct fb_info *info);
extern int fb_init_class_device(struct fb_info *fb_info);
extern void fb_cleanup_class_device(struct fb_info *head);
extern int fb_init_device(struct fb_info *fb_info);
extern void fb_cleanup_device(struct fb_info *head);
extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
/* drivers/video/fbmon.c */