X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fvideo%2Ffbsysfs.c;h=323bdf6fc7d5c10ae1360aadf8a904f4c92a52c5;hb=refs%2Fheads%2Fvserver;hp=6d26057337e262e1c762ae2de279a02a9054273d;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git diff --git a/drivers/video/fbsysfs.c b/drivers/video/fbsysfs.c index 6d2605733..323bdf6fc 100644 --- a/drivers/video/fbsysfs.c +++ b/drivers/video/fbsysfs.c @@ -18,6 +18,9 @@ #include #include #include +#include + +#define FB_SYSFS_FLAG_ATTR 1 /** * framebuffer_alloc - creates a new frame buffer info structure @@ -55,6 +58,10 @@ struct fb_info *framebuffer_alloc(size_t size, struct device *dev) info->device = dev; +#ifdef CONFIG_FB_BACKLIGHT + mutex_init(&info->bl_mutex); +#endif + return info; #undef PADDING #undef BYTES_PER_LONG @@ -66,7 +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. * */ @@ -95,19 +102,28 @@ static int mode_string(char *buf, unsigned int offset, const struct fb_videomode *mode) { char m = 'U'; + char v = 'p'; + if (mode->flag & FB_MODE_IS_DETAILED) m = 'D'; if (mode->flag & FB_MODE_IS_VESA) m = 'V'; if (mode->flag & FB_MODE_IS_STANDARD) m = 'S'; - return snprintf(&buf[offset], PAGE_SIZE - offset, "%c:%dx%d-%d\n", m, mode->xres, mode->yres, mode->refresh); + + if (mode->vmode & FB_VMODE_INTERLACED) + v = 'i'; + if (mode->vmode & FB_VMODE_DOUBLE) + v = 'd'; + + return snprintf(&buf[offset], PAGE_SIZE - offset, "%c:%dx%d%c-%d\n", + 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; @@ -135,9 +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; @@ -145,10 +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); @@ -170,9 +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; @@ -187,10 +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; @@ -202,16 +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; @@ -226,56 +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_con_rotate(struct class_device *class_device, - const char *buf, size_t count) -{ - struct fb_info *fb_info = class_get_devdata(class_device); - int rotate; - char **last = NULL; - - acquire_console_sem(); - rotate = simple_strtoul(buf, last, 0); - fb_con_duit(fb_info, FB_EVENT_SET_CON_ROTATE, &rotate); - release_console_sem(); - return count; -} - -static ssize_t store_con_rotate_all(struct class_device *class_device, - const char *buf, size_t count) -{ - struct fb_info *fb_info = class_get_devdata(class_device); - int rotate; - char **last = NULL; - - acquire_console_sem(); - rotate = simple_strtoul(buf, last, 0); - fb_con_duit(fb_info, FB_EVENT_SET_CON_ROTATE_ALL, &rotate); - release_console_sem(); - return count; -} - -static ssize_t show_con_rotate(struct class_device *class_device, char *buf) +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); - int rotate; - - acquire_console_sem(); - rotate = fb_con_duit(fb_info, FB_EVENT_GET_CON_ROTATE, NULL); - release_console_sem(); - return snprintf(buf, PAGE_SIZE, "%d\n", rotate); -} - -static ssize_t store_virtual(struct class_device *class_device, - 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; @@ -292,111 +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); } -/* Format for cmap is "%02x%c%4x%4x%4x\n" */ -/* %02x entry %c transp %4x red %4x blue %4x green \n */ -/* 256 rows at 16 chars equals 4096, the normal page size */ -/* the code will automatically adjust for different page sizes */ -static ssize_t store_cmap(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); - int rc, i, start, length, transp = 0; - - if ((count > PAGE_SIZE) || ((count % 16) != 0)) - return -EINVAL; - - if (!fb_info->fbops->fb_setcolreg && !fb_info->fbops->fb_setcmap) - return -EINVAL; - - sscanf(buf, "%02x", &start); - length = count / 16; - - for (i = 0; i < length; i++) - if (buf[i * 16 + 2] != ' ') - transp = 1; - - /* If we can batch, do it */ - if (fb_info->fbops->fb_setcmap && length > 1) { - struct fb_cmap umap; - - memset(&umap, 0, sizeof(umap)); - if ((rc = fb_alloc_cmap(&umap, length, transp))) - return rc; - - umap.start = start; - for (i = 0; i < length; i++) { - sscanf(&buf[i * 16 + 3], "%4hx", &umap.red[i]); - sscanf(&buf[i * 16 + 7], "%4hx", &umap.blue[i]); - sscanf(&buf[i * 16 + 11], "%4hx", &umap.green[i]); - if (transp) - umap.transp[i] = (buf[i * 16 + 2] != ' '); - } - rc = fb_info->fbops->fb_setcmap(&umap, fb_info); - fb_copy_cmap(&umap, &fb_info->cmap); - fb_dealloc_cmap(&umap); - - return rc; - } - for (i = 0; i < length; i++) { - u16 red, blue, green, tsp; - - sscanf(&buf[i * 16 + 3], "%4hx", &red); - sscanf(&buf[i * 16 + 7], "%4hx", &blue); - sscanf(&buf[i * 16 + 11], "%4hx", &green); - tsp = (buf[i * 16 + 2] != ' '); - if ((rc = fb_info->fbops->fb_setcolreg(start++, - red, green, blue, tsp, fb_info))) - return rc; - - fb_info->cmap.red[i] = red; - fb_info->cmap.blue[i] = blue; - fb_info->cmap.green[i] = green; - if (transp) - fb_info->cmap.transp[i] = tsp; - } - return 0; -} - -static ssize_t show_cmap(struct class_device *class_device, char *buf) -{ - struct fb_info *fb_info = class_get_devdata(class_device); - unsigned int i; - - if (!fb_info->cmap.red || !fb_info->cmap.blue || - !fb_info->cmap.green) - return -EINVAL; - - if (fb_info->cmap.len > PAGE_SIZE / 16) - return -EINVAL; - - /* don't mess with the format, the buffer is PAGE_SIZE */ - /* 256 entries at 16 chars per line equals 4096 = PAGE_SIZE */ - for (i = 0; i < fb_info->cmap.len; i++) { - snprintf(&buf[ i * 16], PAGE_SIZE - i * 16, "%02x%c%4x%4x%4x\n", i + fb_info->cmap.start, - ((fb_info->cmap.transp && fb_info->cmap.transp[i]) ? '*' : ' '), - fb_info->cmap.red[i], fb_info->cmap.blue[i], - fb_info->cmap.green[i]); - } - return 16 * fb_info->cmap.len; -} - -static ssize_t store_blank(struct class_device *class_device, 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; @@ -410,42 +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, - 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; @@ -466,24 +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, - 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; @@ -496,16 +404,92 @@ 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); } -static struct class_device_attribute class_device_attrs[] = { +#ifdef CONFIG_FB_BACKLIGHT +static ssize_t store_bl_curve(struct device *device, + struct device_attribute *attr, + const char *buf, size_t count) +{ + 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; + + for (i = 0; i < (FB_BACKLIGHT_LEVELS / 8); ++i) + if (sscanf(&buf[i * 24], + "%2hhx %2hhx %2hhx %2hhx %2hhx %2hhx %2hhx %2hhx\n", + &tmp_curve[i * 8 + 0], + &tmp_curve[i * 8 + 1], + &tmp_curve[i * 8 + 2], + &tmp_curve[i * 8 + 3], + &tmp_curve[i * 8 + 4], + &tmp_curve[i * 8 + 5], + &tmp_curve[i * 8 + 6], + &tmp_curve[i * 8 + 7]) != 8) + return -EINVAL; + + /* If there has been an error in the input data, we won't + * reach this loop. + */ + mutex_lock(&fb_info->bl_mutex); + for (i = 0; i < FB_BACKLIGHT_LEVELS; ++i) + fb_info->bl_curve[i] = tmp_curve[i]; + mutex_unlock(&fb_info->bl_mutex); + + return count; +} + +static ssize_t show_bl_curve(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct fb_info *fb_info = dev_get_drvdata(device); + ssize_t len = 0; + 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; + + mutex_lock(&fb_info->bl_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 + 0], + fb_info->bl_curve[i + 1], + fb_info->bl_curve[i + 2], + fb_info->bl_curve[i + 3], + fb_info->bl_curve[i + 4], + fb_info->bl_curve[i + 5], + fb_info->bl_curve[i + 6], + fb_info->bl_curve[i + 7]); + mutex_unlock(&fb_info->bl_mutex); + + return len; +} +#endif + +/* 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 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(color_map, S_IRUGO|S_IWUSR, show_cmap, store_cmap), __ATTR(console, S_IRUGO|S_IWUSR, show_console, store_console), __ATTR(cursor, S_IRUGO|S_IWUSR, show_cursor, store_cursor), __ATTR(mode, S_IRUGO|S_IWUSR, show_mode, store_mode), @@ -515,29 +499,67 @@ static struct class_device_attribute class_device_attrs[] = { __ATTR(name, S_IRUGO, show_name, NULL), __ATTR(stride, S_IRUGO, show_stride, NULL), __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), +#ifdef CONFIG_FB_BACKLIGHT + __ATTR(bl_curve, S_IRUGO|S_IWUSR, show_bl_curve, store_bl_curve), +#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 +/* This function generates a linear backlight curve + * + * 0: off + * 1-7: min + * 8-127: linear from min to max + */ +void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max) +{ + unsigned int i, flat, count, range = (max - min); + + fb_info->bl_curve[0] = off; + for (flat = 1; flat < (FB_BACKLIGHT_LEVELS / 16); ++flat) + fb_info->bl_curve[flat] = min; + + count = FB_BACKLIGHT_LEVELS * 15 / 16; + for (i = 0; i < count; ++i) + fb_info->bl_curve[flat + i] = min + (range * (i + 1) / count); +} +EXPORT_SYMBOL_GPL(fb_bl_default_curve); +#endif