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Commit 38425972 authored by Lei Chen's avatar Lei Chen Committed by Satya Rama Aditya Pinapala
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disp: msm: dsi: disallow backlight update during panel mode switch 



DSI controller and clock will be disabled/enabled during panel mode
switch, so disallow backlight update during panel mode switch to
avoiding DSI exception.

Change-Id: I37e2f3c9aa929555593ffb53950521150ee7698f
Signed-off-by: default avatarLei Chen <chenlei@codeaurora.org>
Signed-off-by: default avatarSatya Rama Aditya Pinapala <psraditya30@codeaurora.org>
parent 7d33aeb8

msm/dsi/dsi_drm.c

+7 −10
Original line number Diff line number Diff line
@@ -253,6 +253,7 @@ static void dsi_bridge_enable(struct drm_bridge *bridge) 
static void dsi_bridge_disable(struct drm_bridge *bridge)

{

	int rc = 0;

	int private_flags;

	struct dsi_display *display;

	struct dsi_bridge *c_bridge = to_dsi_bridge(bridge);
@@ -261,19 +262,15 @@ static void dsi_bridge_disable(struct drm_bridge *bridge) 
		return;

	}

	display = c_bridge->display;

	private_flags =

		bridge->encoder->crtc->state->adjusted_mode.private_flags;



	if (display && display->drm_conn) {

		if (bridge->encoder->crtc->state->adjusted_mode.private_flags &

			MSM_MODE_FLAG_SEAMLESS_POMS) {

			display->poms_pending = true;

			/* Disable ESD thread, during panel mode switch */

			sde_connector_schedule_status_work(display->drm_conn,

				false);

		} else {

			display->poms_pending = false;

		display->poms_pending =

			private_flags & MSM_MODE_FLAG_SEAMLESS_POMS;



		sde_connector_helper_bridge_disable(display->drm_conn);

	}

	}



	rc = dsi_display_pre_disable(c_bridge->display);

	if (rc) {

msm/sde/sde_connector.c

+16 −11
Original line number Diff line number Diff line
@@ -94,8 +94,7 @@ static int sde_backlight_device_update_status(struct backlight_device *bd) 
	if (!bl_lvl && brightness)

		bl_lvl = 1;



	if (display->panel->bl_config.bl_update ==

		BL_UPDATE_DELAY_UNTIL_FIRST_FRAME && !c_conn->allow_bl_update) {

	if (!c_conn->allow_bl_update) {

		c_conn->unset_bl_level = bl_lvl;

		return 0;

	}
@@ -532,9 +531,7 @@ static int _sde_connector_update_bl_scale(struct sde_connector *c_conn) 


	bl_config = &dsi_display->panel->bl_config;



	if (dsi_display->panel->bl_config.bl_update ==

			BL_UPDATE_DELAY_UNTIL_FIRST_FRAME &&

			!c_conn->allow_bl_update) {

	if (!c_conn->allow_bl_update) {

		c_conn->unset_bl_level = bl_config->bl_level;

		return 0;

	}
@@ -797,21 +794,29 @@ void sde_connector_helper_bridge_disable(struct drm_connector *connector) 
{

	int rc;

	struct sde_connector *c_conn = NULL;

	struct dsi_display *display;

	bool poms_pending = false;



	if (!connector)

		return;



	c_conn = to_sde_connector(connector);

	if (c_conn->connector_type == DRM_MODE_CONNECTOR_DSI) {

		display = (struct dsi_display *) c_conn->display;

		poms_pending = display->poms_pending;

	}



	if (!poms_pending) {

		rc = _sde_connector_update_dirty_properties(connector);

		if (rc) {

			SDE_ERROR("conn %d final pre kickoff failed %d\n",

					connector->base.id, rc);

			SDE_EVT32(connector->base.id, SDE_EVTLOG_ERROR);

		}



	}

	/* Disable ESD thread */

	sde_connector_schedule_status_work(connector, false);



	c_conn = to_sde_connector(connector);

	if (c_conn->bl_device) {

		c_conn->bl_device->props.power = FB_BLANK_POWERDOWN;

		c_conn->bl_device->props.state |= BL_CORE_FBBLANK;