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drm/panel: seiko-43wvf1g: use drm_panel backlight support

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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/20191207140353.23967-20-sam@ravnborg.org
This commit is contained in:
Sam Ravnborg 2019-12-07 15:03:47 +01:00
parent d2895af5dc
commit 5a3e516199
1 changed files with 6 additions and 30 deletions
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36
drivers/gpu/drm/panel/panel-seiko-43wvf1g.c
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@ -6,7 +6,6 @@
* Based on Panel Simple driver by Thierry Reding <treding@nvidia.com>
*/
#include <linux/backlight.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/of.h>
@ -46,7 +45,6 @@ struct seiko_panel {
bool prepared;
bool enabled;
const struct seiko_panel_desc *desc;
struct backlight_device *backlight;
struct regulator *dvdd;
struct regulator *avdd;
};
@ -127,12 +125,6 @@ static int seiko_panel_disable(struct drm_panel *panel)
if (!p->enabled)
return 0;
if (p->backlight) {
p->backlight->props.power = FB_BLANK_POWERDOWN;
p->backlight->props.state |= BL_CORE_FBBLANK;
backlight_update_status(p->backlight);
}
p->enabled = false;
return 0;
@ -196,12 +188,6 @@ static int seiko_panel_enable(struct drm_panel *panel)
if (p->enabled)
return 0;
if (p->backlight) {
p->backlight->props.state &= ~BL_CORE_FBBLANK;
p->backlight->props.power = FB_BLANK_UNBLANK;
backlight_update_status(p->backlight);
}
p->enabled = true;
return 0;
@ -245,7 +231,6 @@ static const struct drm_panel_funcs seiko_panel_funcs = {
static int seiko_panel_probe(struct device *dev,
const struct seiko_panel_desc *desc)
{
struct device_node *backlight;
struct seiko_panel *panel;
int err;
@ -265,18 +250,13 @@ static int seiko_panel_probe(struct device *dev,
if (IS_ERR(panel->avdd))
return PTR_ERR(panel->avdd);
backlight = of_parse_phandle(dev->of_node, "backlight", 0);
if (backlight) {
panel->backlight = of_find_backlight_by_node(backlight);
of_node_put(backlight);
if (!panel->backlight)
return -EPROBE_DEFER;
}
drm_panel_init(&panel->base, dev, &seiko_panel_funcs,
DRM_MODE_CONNECTOR_DPI);
err = drm_panel_of_backlight(&panel->base);
if (err)
return err;
err = drm_panel_add(&panel->base);
if (err < 0)
return err;
@ -291,11 +271,7 @@ static int seiko_panel_remove(struct platform_device *pdev)
struct seiko_panel *panel = dev_get_drvdata(&pdev->dev);
drm_panel_remove(&panel->base);
seiko_panel_disable(&panel->base);
if (panel->backlight)
put_device(&panel->backlight->dev);
drm_panel_disable(&panel->base);
return 0;
}
@ -304,7 +280,7 @@ static void seiko_panel_shutdown(struct platform_device *pdev)
{
struct seiko_panel *panel = dev_get_drvdata(&pdev->dev);
seiko_panel_disable(&panel->base);
drm_panel_disable(&panel->base);
}
static const struct display_timing seiko_43wvf1g_timing = {