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drm/panel: lvds: use drm_panel backlight support 

Use the backlight support in drm_panel to simplify the driver

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191207140353.23967-13-sam@ravnborg.org
This commit is contained in:
Sam Ravnborg 2019-12-07 15:03:40 +01:00
parent 5fd14f2879
commit 17d5183ed5
1 changed files with 5 additions and 35 deletions
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40
drivers/gpu/drm/panel/panel-lvds.c
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@ -8,7 +8,6 @@
* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
*/
#include <linux/backlight.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of_platform.h>
@ -34,7 +33,6 @@ struct panel_lvds {
unsigned int bus_format;
bool data_mirror;
struct backlight_device *backlight;
struct regulator *supply;
struct gpio_desc *enable_gpio;
@ -46,19 +44,6 @@ static inline struct panel_lvds *to_panel_lvds(struct drm_panel *panel)
return container_of(panel, struct panel_lvds, panel);
}
static int panel_lvds_disable(struct drm_panel *panel)
{
struct panel_lvds *lvds = to_panel_lvds(panel);
if (lvds->backlight) {
lvds->backlight->props.power = FB_BLANK_POWERDOWN;
lvds->backlight->props.state |= BL_CORE_FBBLANK;
backlight_update_status(lvds->backlight);
}
return 0;
}
static int panel_lvds_unprepare(struct drm_panel *panel)
{
struct panel_lvds *lvds = to_panel_lvds(panel);
@ -93,19 +78,6 @@ static int panel_lvds_prepare(struct drm_panel *panel)
return 0;
}
static int panel_lvds_enable(struct drm_panel *panel)
{
struct panel_lvds *lvds = to_panel_lvds(panel);
if (lvds->backlight) {
lvds->backlight->props.state &= ~BL_CORE_FBBLANK;
lvds->backlight->props.power = FB_BLANK_UNBLANK;
backlight_update_status(lvds->backlight);
}
return 0;
}
static int panel_lvds_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
@ -132,10 +104,8 @@ static int panel_lvds_get_modes(struct drm_panel *panel,
}
static const struct drm_panel_funcs panel_lvds_funcs = {
.disable = panel_lvds_disable,
.unprepare = panel_lvds_unprepare,
.prepare = panel_lvds_prepare,
.enable = panel_lvds_enable,
.get_modes = panel_lvds_get_modes,
};
@ -242,10 +212,6 @@ static int panel_lvds_probe(struct platform_device *pdev)
return ret;
}
lvds->backlight = devm_of_find_backlight(lvds->dev);
if (IS_ERR(lvds->backlight))
return PTR_ERR(lvds->backlight);
/*
* TODO: Handle all power supplies specified in the DT node in a generic
* way for panels that don't care about power supply ordering. LVDS
@ -257,6 +223,10 @@ static int panel_lvds_probe(struct platform_device *pdev)
drm_panel_init(&lvds->panel, lvds->dev, &panel_lvds_funcs,
DRM_MODE_CONNECTOR_LVDS);
ret = drm_panel_of_backlight(&lvds->panel);
if (ret)
return ret;
ret = drm_panel_add(&lvds->panel);
if (ret < 0)
return ret;
@ -271,7 +241,7 @@ static int panel_lvds_remove(struct platform_device *pdev)
drm_panel_remove(&lvds->panel);
panel_lvds_disable(&lvds->panel);
drm_panel_disable(&lvds->panel);
return 0;
}