Use the backlight support in drm_panel to simplify the driver
Signed-off-by: Sam Ravnborg <s...@ravnborg.org>
Cc: Jagan Teki <ja...@amarulasolutions.com>
Cc: Thierry Reding <thierry.red...@gmail.com>
Cc: Sam Ravnborg <s...@ravnborg.org>
---
drivers/gpu/drm/panel/panel-sitronix-st7701.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7701.c
b/drivers/gpu/drm/panel/panel-sitronix-st7701.c
index c08a865a2a93..4b4f2558e3b4 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7701.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7701.c
@@ -9,7 +9,6 @@
#include <drm/drm_panel.h>
#include <drm/drm_print.h>
-#include <linux/backlight.h>
#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include <linux/module.h>
@@ -103,7 +102,6 @@ struct st7701 {
struct mipi_dsi_device *dsi;
const struct st7701_panel_desc *desc;
- struct backlight_device *backlight;
struct regulator_bulk_data *supplies;
struct gpio_desc *reset;
unsigned int sleep_delay;
@@ -223,7 +221,6 @@ static int st7701_enable(struct drm_panel *panel)
struct st7701 *st7701 = panel_to_st7701(panel);
ST7701_DSI(st7701, MIPI_DCS_SET_DISPLAY_ON, 0x00);
- backlight_enable(st7701->backlight);
return 0;
}
@@ -232,7 +229,6 @@ static int st7701_disable(struct drm_panel *panel)
{
struct st7701 *st7701 = panel_to_st7701(panel);
- backlight_disable(st7701->backlight);
ST7701_DSI(st7701, MIPI_DCS_SET_DISPLAY_OFF, 0x00);
return 0;
@@ -366,10 +362,6 @@ static int st7701_dsi_probe(struct mipi_dsi_device *dsi)
return PTR_ERR(st7701->reset);
}
- st7701->backlight = devm_of_find_backlight(&dsi->dev);
- if (IS_ERR(st7701->backlight))
- return PTR_ERR(st7701->backlight);
-
drm_panel_init(&st7701->panel, &dsi->dev, &st7701_funcs,
DRM_MODE_CONNECTOR_DSI);
@@ -384,6 +376,10 @@ static int st7701_dsi_probe(struct mipi_dsi_device *dsi)
*/
st7701->sleep_delay = 120 + desc->panel_sleep_delay;
+ ret = drm_panel_of_backlight(&st7701->panel);
+ if (ret)
+ return ret;
+
ret = drm_panel_add(&st7701->panel);
if (ret < 0)
return ret;
--
2.20.1
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