*/
#include <linux/kernel.h>
+#include <linux/slab.h>
#include <linux/fb.h>
#include <linux/console.h>
#include <linux/module.h>
+#define FB_SYSFS_FLAG_ATTR 1
+
/**
* framebuffer_alloc - creates a new frame buffer info structure
*
info->device = dev;
#ifdef CONFIG_FB_BACKLIGHT
- mutex_init(&info->bl_mutex);
+ mutex_init(&info->bl_curve_mutex);
#endif
return info;
*
* @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.
*
*/
void framebuffer_release(struct fb_info *info)
{
+ kfree(info->apertures);
kfree(info);
}
EXPORT_SYMBOL(framebuffer_release);
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;
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;
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);
acquire_console_sem();
list_splice(&fb_info->modelist, &old_list);
- fb_videomode_to_modelist((struct fb_videomode *)buf, i,
+ fb_videomode_to_modelist((const struct fb_videomode *)buf, i,
&fb_info->modelist);
if (fb_new_modelist(fb_info)) {
fb_destroy_modelist(&fb_info->modelist);
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;
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;
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;
}
-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,
- const char * buf, size_t count)
+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;
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;
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,
- const char * buf, size_t count)
+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,
- const char * buf, size_t count)
+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;
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);
+ fb_info->var.yoffset);
}
-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,
- const char *buf, size_t count)
+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;
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,
- const char *buf, size_t count)
+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;
+ /* Some drivers don't use framebuffer_alloc(), but those also
+ * don't have backlights.
+ */
+ if (!fb_info || !fb_info->bl_dev)
+ return -ENODEV;
+
if (count != (FB_BACKLIGHT_LEVELS / 8 * 24))
return -EINVAL;
/* If there has been an error in the input data, we won't
* reach this loop.
*/
- mutex_lock(&fb_info->bl_mutex);
+ mutex_lock(&fb_info->bl_curve_mutex);
for (i = 0; i < FB_BACKLIGHT_LEVELS; ++i)
fb_info->bl_curve[i] = tmp_curve[i];
- mutex_unlock(&fb_info->bl_mutex);
+ mutex_unlock(&fb_info->bl_curve_mutex);
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;
- mutex_lock(&fb_info->bl_mutex);
+ /* Some drivers don't use framebuffer_alloc(), but those also
+ * don't have backlights.
+ */
+ if (!fb_info || !fb_info->bl_dev)
+ return -ENODEV;
+
+ mutex_lock(&fb_info->bl_curve_mutex);
for (i = 0; i < FB_BACKLIGHT_LEVELS; i += 8)
len += snprintf(&buf[len], PAGE_SIZE,
"%02x %02x %02x %02x %02x %02x %02x %02x\n",
fb_info->bl_curve[i + 5],
fb_info->bl_curve[i + 6],
fb_info->bl_curve[i + 7]);
- mutex_unlock(&fb_info->bl_mutex);
+ mutex_unlock(&fb_info->bl_curve_mutex);
return len;
}
/* 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),
#endif
};
-int fb_init_class_device(struct fb_info *fb_info)
+int fb_init_device(struct fb_info *fb_info)
{
- unsigned int i;
- class_set_devdata(fb_info->class_device, fb_info);
+ int i, error = 0;
+
+ dev_set_drvdata(fb_info->dev, fb_info);
+
+ fb_info->class_flag |= FB_SYSFS_FLAG_ATTR;
+
+ for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
+ error = device_create_file(fb_info->dev, &device_attrs[i]);
+
+ if (error)
+ break;
+ }
+
+ if (error) {
+ while (--i >= 0)
+ device_remove_file(fb_info->dev, &device_attrs[i]);
+ fb_info->class_flag &= ~FB_SYSFS_FLAG_ATTR;
+ }
- for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
- class_device_create_file(fb_info->class_device,
- &class_device_attrs[i]);
return 0;
}
-void fb_cleanup_class_device(struct fb_info *fb_info)
+void fb_cleanup_device(struct fb_info *fb_info)
{
unsigned int i;
- for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
- class_device_remove_file(fb_info->class_device,
- &class_device_attrs[i]);
+ if (fb_info->class_flag & FB_SYSFS_FLAG_ATTR) {
+ 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;
+ }
}
#ifdef CONFIG_FB_BACKLIGHT
{
unsigned int i, flat, count, range = (max - min);
+ mutex_lock(&fb_info->bl_curve_mutex);
+
fb_info->bl_curve[0] = off;
for (flat = 1; flat < (FB_BACKLIGHT_LEVELS / 16); ++flat)
count = FB_BACKLIGHT_LEVELS * 15 / 16;
for (i = 0; i < count; ++i)
fb_info->bl_curve[flat + i] = min + (range * (i + 1) / count);
+
+ mutex_unlock(&fb_info->bl_curve_mutex);
}
EXPORT_SYMBOL_GPL(fb_bl_default_curve);
#endif
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff