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Commit 1a7b2ff7 authored by Padmanabhan Komanduru's avatar Padmanabhan Komanduru
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drm/msm/dp: handle DisplayPort ON/OFF during PM suspend/resume 



Add changes in the DisplayPort ON/OFF path and the HPD notification
path to handle PM suspend/resume and adb shell stop/start use-cases
which are not driven by HPD events.

Change-Id: Iedccae9104eb8937d1fd5f4ce958ad5818a2c3ff
Signed-off-by: default avatarPadmanabhan Komanduru <pkomandu@codeaurora.org>
parent c2aa9c2a

drivers/gpu/drm/msm/dp/dp_display.c

+8 −4
Original line number Diff line number Diff line
@@ -806,7 +806,7 @@ static void dp_display_connect_work(struct work_struct *work) 
	struct dp_display_private *dp = container_of(dw,

			struct dp_display_private, connect_work);



	if (dp->dp_display.is_connected) {

	if (dp->dp_display.is_connected && dp_display_framework_ready(dp)) {

		pr_debug("HPD already on\n");

		return;

	}
@@ -1065,6 +1065,11 @@ static int dp_display_enable(struct dp_display *dp_display) 


	dp->aux->init(dp->aux, dp->parser->aux_cfg);



	if (dp->debug->psm_enabled) {

		dp->link->psm_config(dp->link, &dp->panel->link_info, false);

		dp->debug->psm_enabled = false;

	}



	rc = dp->ctrl->on(dp->ctrl);



	if (dp->debug->tpg_state)
@@ -1202,10 +1207,9 @@ static int dp_display_disable(struct dp_display *dp_display) 
	 * any notification from driver. Initialize post_open callback to notify

	 * DP connection once framework restarts.

	 */

	if (dp->usbpd->hpd_high && dp->usbpd->alt_mode_cfg_done) {

	if (dp->usbpd->hpd_high && dp->usbpd->alt_mode_cfg_done)

		dp_display->post_open = dp_display_post_open;

		dp->dp_display.is_connected = false;

	}



	dp->power_on = false;

	dp->aux->state = DP_STATE_CTRL_POWERED_OFF;

end: