diff options
| author | Sam Ravnborg <sam@ravnborg.org> | 2019-12-07 17:03:51 +0300 |
|---|---|---|
| committer | Sam Ravnborg <sam@ravnborg.org> | 2019-12-10 00:57:27 +0300 |
| commit | 31a59a9c04f0c85a459849ae06dbd10e1208471e (patch) | |
| tree | ff676b59d26b521932bc21da0e3d3e31875cfc5c /drivers/gpu/drm/panel | |
| parent | e46eb37a2d829878db8eb59a11bc3de7fc94e642 (diff) | |
| download | linux-31a59a9c04f0c85a459849ae06dbd10e1208471e.tar.xz | |
drm/panel: sitronix-st7789v: 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/20191207140353.23967-24-sam@ravnborg.org
Diffstat (limited to 'drivers/gpu/drm/panel')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-sitronix-st7789v.c | 37 |
1 files changed, 4 insertions, 33 deletions
diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c index ebefe2f4c26b..cc02c54c1b2e 100644 --- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c +++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c @@ -3,7 +3,6 @@ * Copyright (C) 2017 Free Electrons */ -#include <linux/backlight.h> #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/module.h> @@ -116,7 +115,6 @@ struct st7789v { struct drm_panel panel; struct spi_device *spi; struct gpio_desc *reset; - struct backlight_device *backlight; struct regulator *power; }; @@ -323,12 +321,6 @@ static int st7789v_enable(struct drm_panel *panel) { struct st7789v *ctx = panel_to_st7789v(panel); - if (ctx->backlight) { - ctx->backlight->props.state &= ~BL_CORE_FBBLANK; - ctx->backlight->props.power = FB_BLANK_UNBLANK; - backlight_update_status(ctx->backlight); - } - return st7789v_write_command(ctx, MIPI_DCS_SET_DISPLAY_ON); } @@ -339,12 +331,6 @@ static int st7789v_disable(struct drm_panel *panel) ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_SET_DISPLAY_OFF)); - if (ctx->backlight) { - ctx->backlight->props.power = FB_BLANK_POWERDOWN; - ctx->backlight->props.state |= BL_CORE_FBBLANK; - backlight_update_status(ctx->backlight); - } - return 0; } @@ -370,7 +356,6 @@ static const struct drm_panel_funcs st7789v_drm_funcs = { static int st7789v_probe(struct spi_device *spi) { - struct device_node *backlight; struct st7789v *ctx; int ret; @@ -394,26 +379,15 @@ static int st7789v_probe(struct spi_device *spi) return PTR_ERR(ctx->reset); } - backlight = of_parse_phandle(spi->dev.of_node, "backlight", 0); - if (backlight) { - ctx->backlight = of_find_backlight_by_node(backlight); - of_node_put(backlight); - - if (!ctx->backlight) - return -EPROBE_DEFER; - } + ret = drm_panel_of_backlight(&ctx->panel); + if (ret) + return ret; ret = drm_panel_add(&ctx->panel); if (ret < 0) - goto err_free_backlight; + return ret; return 0; - -err_free_backlight: - if (ctx->backlight) - put_device(&ctx->backlight->dev); - - return ret; } static int st7789v_remove(struct spi_device *spi) @@ -422,9 +396,6 @@ static int st7789v_remove(struct spi_device *spi) drm_panel_remove(&ctx->panel); - if (ctx->backlight) - put_device(&ctx->backlight->dev); - return 0; } |