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| author | Sam Ravnborg <sam@ravnborg.org> | 2019-12-07 15:03:47 +0100 |
|---|---|---|
| committer | Sam Ravnborg <sam@ravnborg.org> | 2019-12-09 22:57:27 +0100 |
| commit | 5a3e51619961d7655b41f1b15512ef1aebce80c8 (patch) | |
| tree | 0236c4d1303c57a51d2529c1dd7417385ee92eaa /drivers/gpu/drm/panel/panel-seiko-43wvf1g.c | |
| parent | d2895af5dc8f4985e3c99a36288e545fab65237d (diff) | |
| download | lwn-5a3e51619961d7655b41f1b15512ef1aebce80c8.tar.gz lwn-5a3e51619961d7655b41f1b15512ef1aebce80c8.zip | |
drm/panel: seiko-43wvf1g: 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/20191207140353.23967-20-sam@ravnborg.org
Diffstat (limited to 'drivers/gpu/drm/panel/panel-seiko-43wvf1g.c')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-seiko-43wvf1g.c | 36 |
1 files changed, 6 insertions, 30 deletions
diff --git a/drivers/gpu/drm/panel/panel-seiko-43wvf1g.c b/drivers/gpu/drm/panel/panel-seiko-43wvf1g.c index 18e745104aaf..40fcbbbacb2c 100644 --- a/drivers/gpu/drm/panel/panel-seiko-43wvf1g.c +++ b/drivers/gpu/drm/panel/panel-seiko-43wvf1g.c @@ -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 = { |