Merge "drm/msm/dsi-staging: add dcs backlight support to dsi driver" into msm-4.9 (c76ea4bc) · Commits · e / devices / android_kernel_fairphone_FP3

drivers/gpu/drm/msm/dsi-staging/dsi_panel.c

+31 −0

Original line number	Diff line number	Diff line
		@@ -540,15 +540,42 @@ static int dsi_panel_led_bl_register(struct dsi_panel *panel,
		}
		#endif

		static int dsi_panel_update_backlight(struct dsi_panel *panel,
		u32 bl_lvl)
		{
		int rc = 0;
		struct mipi_dsi_device *dsi;

		if (!panel \|\| (bl_lvl > 0xffff)) {
		pr_err("invalid params\n");
		return -EINVAL;
		}

		dsi = &panel->mipi_device;

		mutex_lock(&panel->panel_lock);

		rc = mipi_dsi_dcs_set_display_brightness(dsi, bl_lvl);
		if (rc < 0)
		pr_err("failed to update dcs backlight:%d\n", bl_lvl);

		mutex_unlock(&panel->panel_lock);
		return rc;
		}

		int dsi_panel_set_backlight(struct dsi_panel *panel, u32 bl_lvl)
		{
		int rc = 0;
		struct dsi_backlight_config *bl = &panel->bl_config;

		pr_debug("backlight type:%d lvl:%d\n", bl->type, bl_lvl);
		switch (bl->type) {
		case DSI_BACKLIGHT_WLED:
		led_trigger_event(bl->wled, bl_lvl);
		break;
		case DSI_BACKLIGHT_DCS:
		dsi_panel_update_backlight(panel, bl_lvl);
		break;
		default:
		pr_err("Backlight type(%d) not supported\n", bl->type);
		rc = -ENOTSUPP;
		@@ -566,6 +593,8 @@ static int dsi_panel_bl_register(struct dsi_panel *panel)
		case DSI_BACKLIGHT_WLED:
		rc = dsi_panel_led_bl_register(panel, bl);
		break;
		case DSI_BACKLIGHT_DCS:
		break;
		default:
		pr_err("Backlight type(%d) not supported\n", bl->type);
		rc = -ENOTSUPP;
		@@ -585,6 +614,8 @@ static int dsi_panel_bl_unregister(struct dsi_panel *panel)
		case DSI_BACKLIGHT_WLED:
		led_trigger_unregister_simple(bl->wled);
		break;
		case DSI_BACKLIGHT_DCS:
		break;
		default:
		pr_err("Backlight type(%d) not supported\n", bl->type);
		rc = -ENOTSUPP;