diff options
Diffstat (limited to 'drivers/video/fbsysfs.c')
| -rw-r--r-- | drivers/video/fbsysfs.c | 81 |
1 files changed, 46 insertions, 35 deletions
diff --git a/drivers/video/fbsysfs.c b/drivers/video/fbsysfs.c index 08dac9580d1..6d26057337e 100644 --- a/drivers/video/fbsysfs.c +++ b/drivers/video/fbsysfs.c @@ -43,10 +43,11 @@ struct fb_info *framebuffer_alloc(size_t size, struct device *dev) if (size) fb_info_size += PADDING; - p = kmalloc(fb_info_size + size, GFP_KERNEL); + p = kzalloc(fb_info_size + size, GFP_KERNEL); + if (!p) return NULL; - memset(p, 0, fb_info_size + size); + info = (struct fb_info *) p; if (size) @@ -106,8 +107,7 @@ static int mode_string(char *buf, unsigned int offset, static ssize_t store_mode(struct class_device *class_device, const char * buf, size_t count) { - struct fb_info *fb_info = - (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_device); char mstr[100]; struct fb_var_screeninfo var; struct fb_modelist *modelist; @@ -137,8 +137,7 @@ static ssize_t store_mode(struct class_device *class_device, const char * buf, static ssize_t show_mode(struct class_device *class_device, char *buf) { - struct fb_info *fb_info = - (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_device); if (!fb_info->mode) return 0; @@ -149,8 +148,7 @@ static ssize_t show_mode(struct class_device *class_device, char *buf) static ssize_t store_modes(struct class_device *class_device, const char * buf, size_t count) { - struct fb_info *fb_info = - (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_device); LIST_HEAD(old_list); int i = count / sizeof(struct fb_videomode); @@ -174,8 +172,7 @@ static ssize_t store_modes(struct class_device *class_device, const char * buf, static ssize_t show_modes(struct class_device *class_device, char *buf) { - struct fb_info *fb_info = - (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_device); unsigned int i; struct list_head *pos; struct fb_modelist *modelist; @@ -193,8 +190,7 @@ static ssize_t show_modes(struct class_device *class_device, char *buf) static ssize_t store_bpp(struct class_device *class_device, const char * buf, size_t count) { - struct fb_info *fb_info = - (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_device); struct fb_var_screeninfo var; char ** last = NULL; int err; @@ -208,8 +204,7 @@ static ssize_t store_bpp(struct class_device *class_device, const char * buf, static ssize_t show_bpp(struct class_device *class_device, char *buf) { - struct fb_info *fb_info = - (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_device); return snprintf(buf, PAGE_SIZE, "%d\n", fb_info->var.bits_per_pixel); } @@ -280,8 +275,7 @@ static ssize_t show_con_rotate(struct class_device *class_device, char *buf) static ssize_t store_virtual(struct class_device *class_device, const char * buf, size_t count) { - struct fb_info *fb_info = - (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_device); struct fb_var_screeninfo var; char *last = NULL; int err; @@ -300,16 +294,14 @@ static ssize_t store_virtual(struct class_device *class_device, static ssize_t show_virtual(struct class_device *class_device, char *buf) { - struct fb_info *fb_info = - (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_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) { - struct fb_info *fb_info = - (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_device); return snprintf(buf, PAGE_SIZE, "%d\n", fb_info->fix.line_length); } @@ -320,7 +312,7 @@ static ssize_t show_stride(struct class_device *class_device, char *buf) static ssize_t store_cmap(struct class_device *class_device, const char *buf, size_t count) { - struct fb_info *fb_info = (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_device); int rc, i, start, length, transp = 0; if ((count > PAGE_SIZE) || ((count % 16) != 0)) @@ -380,8 +372,7 @@ static ssize_t store_cmap(struct class_device *class_device, const char *buf, static ssize_t show_cmap(struct class_device *class_device, char *buf) { - struct fb_info *fb_info = - (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_device); unsigned int i; if (!fb_info->cmap.red || !fb_info->cmap.blue || @@ -405,8 +396,7 @@ static ssize_t show_cmap(struct class_device *class_device, char *buf) static ssize_t store_blank(struct class_device *class_device, const char * buf, size_t count) { - struct fb_info *fb_info = - (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_device); char *last = NULL; int err; @@ -422,41 +412,40 @@ static ssize_t store_blank(struct class_device *class_device, const char * buf, static ssize_t show_blank(struct class_device *class_device, char *buf) { -// struct fb_info *fb_info = (struct fb_info *)class_get_devdata(class_device); +// struct fb_info *fb_info = class_get_devdata(class_device); return 0; } static ssize_t store_console(struct class_device *class_device, const char * buf, size_t count) { -// struct fb_info *fb_info = (struct fb_info *)class_get_devdata(class_device); +// struct fb_info *fb_info = class_get_devdata(class_device); return 0; } static ssize_t show_console(struct class_device *class_device, char *buf) { -// struct fb_info *fb_info = (struct fb_info *)class_get_devdata(class_device); +// struct fb_info *fb_info = class_get_devdata(class_device); return 0; } static ssize_t store_cursor(struct class_device *class_device, const char * buf, size_t count) { -// struct fb_info *fb_info = (struct fb_info *)class_get_devdata(class_device); +// struct fb_info *fb_info = class_get_devdata(class_device); return 0; } static ssize_t show_cursor(struct class_device *class_device, char *buf) { -// struct fb_info *fb_info = (struct fb_info *)class_get_devdata(class_device); +// struct fb_info *fb_info = class_get_devdata(class_device); return 0; } static ssize_t store_pan(struct class_device *class_device, const char * buf, size_t count) { - struct fb_info *fb_info = - (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_device); struct fb_var_screeninfo var; char *last = NULL; int err; @@ -479,19 +468,40 @@ static ssize_t store_pan(struct class_device *class_device, const char * buf, static ssize_t show_pan(struct class_device *class_device, char *buf) { - struct fb_info *fb_info = - (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_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) { - struct fb_info *fb_info = (struct fb_info *)class_get_devdata(class_device); + struct fb_info *fb_info = class_get_devdata(class_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) +{ + struct fb_info *fb_info = class_get_devdata(class_device); + u32 state; + char *last = NULL; + + state = simple_strtoul(buf, &last, 0); + + acquire_console_sem(); + fb_set_suspend(fb_info, (int)state); + release_console_sem(); + + return count; +} + +static ssize_t show_fbstate(struct class_device *class_device, char *buf) +{ + struct fb_info *fb_info = class_get_devdata(class_device); + return snprintf(buf, PAGE_SIZE, "%d\n", fb_info->state); +} + static struct class_device_attribute class_device_attrs[] = { __ATTR(bits_per_pixel, S_IRUGO|S_IWUSR, show_bpp, store_bpp), __ATTR(blank, S_IRUGO|S_IWUSR, show_blank, store_blank), @@ -507,6 +517,7 @@ static struct class_device_attribute class_device_attrs[] = { __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate), __ATTR(con_rotate, S_IRUGO|S_IWUSR, show_con_rotate, store_con_rotate), __ATTR(con_rotate_all, S_IWUSR, NULL, store_con_rotate_all), + __ATTR(state, S_IRUGO|S_IWUSR, show_fbstate, store_fbstate), }; int fb_init_class_device(struct fb_info *fb_info) |