Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 4f2aa096 authored by Lakshmi Narayana Kalavala's avatar Lakshmi Narayana Kalavala
Browse files

drm/msm: support shutdown sequence on msm driver 



Add shutdown sequence in msm driver to turn off
all connectors/bridge gracefully. That will allow
the graceful shutdown for dsi panel.

Change-Id: I055bd57a45706478c785b7a3c41bf7623dd8d2e7
Signed-off-by: default avatarDhaval Patel <pdhaval@codeaurora.org>
Signed-off-by: default avatarLakshmi Narayana Kalavala <lkalaval@codeaurora.org>
parent 07324253

drivers/gpu/drm/msm/msm_atomic.c

+6 −1
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.

 * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.

 * Copyright (C) 2014 Red Hat

 * Author: Rob Clark <robdclark@gmail.com>

 *
@@ -562,6 +562,11 @@ int msm_atomic_commit(struct drm_device *dev, 
	struct msm_commit *commit;

	int i, ret;



	if (!priv || priv->shutdown_in_progress) {

		DRM_ERROR("priv is null or shutdwon is in-progress\n");

		return -EINVAL;

	}



	SDE_ATRACE_BEGIN("atomic_commit");

	ret = drm_atomic_helper_prepare_planes(dev, state);

	if (ret) {

drivers/gpu/drm/msm/msm_drv.c

+24 −1
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.

 * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.

 * Copyright (C) 2013 Red Hat

 * Author: Rob Clark <robdclark@gmail.com>

 *
@@ -2199,6 +2199,28 @@ static const struct platform_device_id msm_id[] = { 
	{ }

};



static void msm_pdev_shutdown(struct platform_device *pdev)

{

	struct drm_device *ddev = platform_get_drvdata(pdev);

	struct msm_drm_private *priv = NULL;



	if (!ddev) {

		DRM_ERROR("invalid drm device node\n");

		return;

	}



	priv = ddev->dev_private;

	if (!priv) {

		DRM_ERROR("invalid msm drm private node\n");

		return;

	}



	msm_lastclose(ddev);



	/* set this after lastclose to allow kickoff from lastclose */

	priv->shutdown_in_progress = true;

}



static const struct of_device_id dt_match[] = {

	{ .compatible = "qcom,mdp" },      /* mdp4 */

	{ .compatible = "qcom,sde-kms" },  /* sde  */
@@ -2209,6 +2231,7 @@ MODULE_DEVICE_TABLE(of, dt_match); 
static struct platform_driver msm_platform_driver = {

	.probe      = msm_pdev_probe,

	.remove     = msm_pdev_remove,

	.shutdown   = msm_pdev_shutdown,

	.driver     = {

		.name   = "msm_drm",

		.of_match_table = dt_match,

drivers/gpu/drm/msm/msm_drv.h

+3 −0
Original line number Diff line number Diff line
@@ -375,6 +375,9 @@ struct msm_drm_private { 


	/* list of clients waiting for events */

	struct list_head client_event_list;



	/* update the flag when msm driver receives shutdown notification */

	bool shutdown_in_progress;

};



struct msm_format {