diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2024-03-05 19:22:41 +0300 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2024-03-28 13:09:04 +0300 |
| commit | 56a6f83f764a983c12f059847d82fd7b64bacd2a (patch) | |
| tree | d3f6866c8cbfdca9937dd646780986a879b84f37 /drivers/video/fbdev | |
| parent | 8a8e7f84c13c2700ae77540e2841922a87f71c9b (diff) | |
| download | linux-56a6f83f764a983c12f059847d82fd7b64bacd2a.tar.xz | |
fbdev: ssd1307fb: Init backlight before registering framebuffer
For drivers that support backlight, LCD and fbdev devices, fbdev has
to be initialized last. See documentation for struct fbinfo.bl_dev.
The backlight name's index number comes from register_framebuffer(),
which now happens after initializing the backlight device. So like
in all other backlight drivers, we now give the backlight device a
generic name without the fbdev index.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://lore.kernel.org/r/20240305162425.23845-9-tzimmermann@suse.de
Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'drivers/video/fbdev')
| -rw-r--r-- | drivers/video/fbdev/ssd1307fb.c | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c index 1a4f90ea7d5a..0d1590c61eb0 100644 --- a/drivers/video/fbdev/ssd1307fb.c +++ b/drivers/video/fbdev/ssd1307fb.c @@ -594,7 +594,6 @@ static int ssd1307fb_probe(struct i2c_client *client) { struct device *dev = &client->dev; struct backlight_device *bl; - char bl_name[12]; struct fb_info *info; struct fb_deferred_io *ssd1307fb_defio; u32 vmem_size; @@ -733,31 +732,30 @@ static int ssd1307fb_probe(struct i2c_client *client) if (ret) goto regulator_enable_error; - ret = register_framebuffer(info); - if (ret) { - dev_err(dev, "Couldn't register the framebuffer\n"); - goto panel_init_error; - } - - snprintf(bl_name, sizeof(bl_name), "ssd1307fb%d", info->node); - bl = backlight_device_register(bl_name, dev, par, &ssd1307fb_bl_ops, + bl = backlight_device_register("ssd1307fb-bl", dev, par, &ssd1307fb_bl_ops, NULL); if (IS_ERR(bl)) { ret = PTR_ERR(bl); dev_err(dev, "unable to register backlight device: %d\n", ret); - goto bl_init_error; + goto panel_init_error; + } + info->bl_dev = bl; + + ret = register_framebuffer(info); + if (ret) { + dev_err(dev, "Couldn't register the framebuffer\n"); + goto fb_init_error; } bl->props.brightness = par->contrast; bl->props.max_brightness = MAX_CONTRAST; - info->bl_dev = bl; dev_info(dev, "fb%d: %s framebuffer device registered, using %d bytes of video memory\n", info->node, info->fix.id, vmem_size); return 0; -bl_init_error: - unregister_framebuffer(info); +fb_init_error: + backlight_device_unregister(bl); panel_init_error: pwm_disable(par->pwm); pwm_put(par->pwm); |