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drm/panel: ilitek-ili9881c: 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/20191207140353.23967-10-sam@ravnborg.org
This commit is contained in:
Sam Ravnborg 2019-12-07 15:03:37 +01:00
parent e3e4944faa
commit 2b33e19195
1 changed files with 3 additions and 16 deletions
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19
drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
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@ -3,7 +3,6 @@
* Copyright (C) 2017-2018, Bootlin
*/
#include <linux/backlight.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/err.h>
@ -25,7 +24,6 @@ struct ili9881c {
struct drm_panel panel;
struct mipi_dsi_device *dsi;
struct backlight_device *backlight;
struct regulator *power;
struct gpio_desc *reset;
};
@ -348,7 +346,6 @@ static int ili9881c_enable(struct drm_panel *panel)
msleep(120);
mipi_dsi_dcs_set_display_on(ctx->dsi);
backlight_enable(ctx->backlight);
return 0;
}
@ -357,7 +354,6 @@ static int ili9881c_disable(struct drm_panel *panel)
{
struct ili9881c *ctx = panel_to_ili9881c(panel);
backlight_disable(ctx->backlight);
return mipi_dsi_dcs_set_display_off(ctx->dsi);
}
@ -423,7 +419,6 @@ static const struct drm_panel_funcs ili9881c_funcs = {
static int ili9881c_dsi_probe(struct mipi_dsi_device *dsi)
{
struct device_node *np;
struct ili9881c *ctx;
int ret;
@ -448,14 +443,9 @@ static int ili9881c_dsi_probe(struct mipi_dsi_device *dsi)
return PTR_ERR(ctx->reset);
}
np = of_parse_phandle(dsi->dev.of_node, "backlight", 0);
if (np) {
ctx->backlight = of_find_backlight_by_node(np);
of_node_put(np);
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)
@ -475,9 +465,6 @@ static int ili9881c_dsi_remove(struct mipi_dsi_device *dsi)
mipi_dsi_detach(dsi);
drm_panel_remove(&ctx->panel);
if (ctx->backlight)
put_device(&ctx->backlight->dev);
return 0;
}