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staging/fbtft: Fix backlight 

Commit b4a1ed0cd1 ("fbdev: make FB_BACKLIGHT a tristate") forgot to
update fbtft breaking its backlight support when FB_BACKLIGHT is a module.

Since FB_TFT selects FB_BACKLIGHT there's no need for this conditional
so just remove it and we're good.

Fixes: b4a1ed0cd1 ("fbdev: make FB_BACKLIGHT a tristate")
Cc: <stable@vger.kernel.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://lore.kernel.org/r/20211105204358.2991-1-noralf@tronnes.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Noralf Trønnes 2021-11-05 21:43:58 +01:00 committed by Greg Kroah-Hartman
parent d5f0b80436
commit 7865dd2493
2 changed files with 1 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/staging/fbtft/fb_ssd1351.c
View File

@ -187,7 +187,6 @@ static struct fbtft_display display = {
},
};
#ifdef CONFIG_FB_BACKLIGHT
static int update_onboard_backlight(struct backlight_device *bd)
{
struct fbtft_par *par = bl_get_data(bd);
@ -231,9 +230,6 @@ static void register_onboard_backlight(struct fbtft_par *par)
if (!par->fbtftops.unregister_backlight)
par->fbtftops.unregister_backlight = fbtft_unregister_backlight;
}
#else
static void register_onboard_backlight(struct fbtft_par *par) { };
#endif
FBTFT_REGISTER_DRIVER(DRVNAME, "solomon,ssd1351", &display);

9
drivers/staging/fbtft/fbtft-core.c
View File

@ -128,7 +128,6 @@ static int fbtft_request_gpios(struct fbtft_par *par)
return 0;
}
#ifdef CONFIG_FB_BACKLIGHT
static int fbtft_backlight_update_status(struct backlight_device *bd)
{
struct fbtft_par *par = bl_get_data(bd);
@ -161,6 +160,7 @@ void fbtft_unregister_backlight(struct fbtft_par *par)
par->info->bl_dev = NULL;
}
}
EXPORT_SYMBOL(fbtft_unregister_backlight);
static const struct backlight_ops fbtft_bl_ops = {
.get_brightness = fbtft_backlight_get_brightness,
@ -198,12 +198,7 @@ void fbtft_register_backlight(struct fbtft_par *par)
if (!par->fbtftops.unregister_backlight)
par->fbtftops.unregister_backlight = fbtft_unregister_backlight;
}
#else
void fbtft_register_backlight(struct fbtft_par *par) { };
void fbtft_unregister_backlight(struct fbtft_par *par) { };
#endif
EXPORT_SYMBOL(fbtft_register_backlight);
EXPORT_SYMBOL(fbtft_unregister_backlight);
static void fbtft_set_addr_win(struct fbtft_par *par, int xs, int ys, int xe,
int ye)
@ -853,13 +848,11 @@ int fbtft_register_framebuffer(struct fb_info *fb_info)
fb_info->fix.smem_len >> 10, text1,
HZ / fb_info->fbdefio->delay, text2);
#ifdef CONFIG_FB_BACKLIGHT
/* Turn on backlight if available */
if (fb_info->bl_dev) {
fb_info->bl_dev->props.power = FB_BLANK_UNBLANK;
fb_info->bl_dev->ops->update_status(fb_info->bl_dev);
}
#endif
return 0;