drm/panel/s6e3ha2: simplify s6e3ha2_update_gamma

s6e3ha2_update_gamma should update existing helpers to transfer data.

Change-Id: I0d087c93ea854c27c0e9eb151ae01d0190c11497
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>

diff --git a/drivers/gpu/drm/panel/panel-s6e3ha2.c b/drivers/gpu/drm/panel/panel-s6e3ha2.c
index 03186e6..3d6683e 100644 (file)
--- a/drivers/gpu/drm/panel/panel-s6e3ha2.c
+++ b/drivers/gpu/drm/panel/panel-s6e3ha2.c
@@ -521,24 +521,15 @@ static unsigned int s6e3ha2_get_brightness_index(unsigned int brightness)
        return (brightness * (NUM_GAMMA_STEPS - 1)) / MAX_BRIGHTNESS;
 }
 
-static int s6e3ha2_update_gamma(struct s6e3ha2 *ctx,
-                                       unsigned int brightness)
+static void s6e3ha2_update_gamma(struct s6e3ha2 *ctx, unsigned int brightness)
 {
-       struct backlight_device *bl_dev = ctx->bl_dev;
-       struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
        unsigned int index = s6e3ha2_get_brightness_index(brightness);
-       int ret;
-
-       ret = mipi_dsi_dcs_write(dsi, 0xca, gamma_tbl[index],
-                                                       GAMMA_CMD_CNT);
-       if (ret < 0)
-               return ret;
 
+       s6e3ha2_dcs_write(ctx, 0xca, gamma_tbl[index], GAMMA_CMD_CNT);
        s6e3ha2_gamma_update(ctx);
 
-       bl_dev->props.brightness = brightness;
-
-       return 0;
+       if (!ctx->error)
+               ctx->bl_dev->props.brightness = brightness;
 }
 
 static int s6e3ha2_set_brightness(struct backlight_device *bl_dev)
@@ -560,9 +551,7 @@ static int s6e3ha2_set_brightness(struct backlight_device *bl_dev)
        }
 
        s6e3ha2_test_key_on_f0(ctx);
-       ret = s6e3ha2_update_gamma(ctx, brightness);
-       if (ret < 0)
-               return ret;
+       s6e3ha2_update_gamma(ctx, brightness);
        s6e3ha2_aor_control(ctx);
        s6e3ha2_set_vint(ctx);