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Commit cae87ae8 authored by Sree Sesha Aravind Vadrevu's avatar Sree Sesha Aravind Vadrevu
Browse files

msm: mdss: call suspend and resume panel events during runtime triggers 



Send a panel suspend/resume event to all the MDSS devices to ensure
proper handling of regulators and clocks during the suspend/resume
sequence.

Change-Id: I820f5e4113f599ba53d4fa4726e406f74872f95f
Signed-off-by: default avatarSree Sesha Aravind Vadrevu <svadrevu@codeaurora.org>
parent af83c6c7

drivers/video/msm/mdss/mdss_fb.c

+24 −0
Original line number Diff line number Diff line
@@ -2391,3 +2391,27 @@ int __init mdss_fb_init(void) 
}



module_init(mdss_fb_init);



int mdss_fb_suspres_panel(struct device *dev, void *data)

{

	struct msm_fb_data_type *mfd;

	int rc;

	u32 event;



	if (!data) {

		pr_err("Device state not defined\n");

		return -EINVAL;

	}

	mfd = dev_get_drvdata(dev);

	if (!mfd)

		return 0;



	event = *((bool *) data) ? MDSS_EVENT_RESUME : MDSS_EVENT_SUSPEND;



	rc = mdss_fb_send_panel_event(mfd, event, NULL);

	if (rc)

		pr_warn("unable to %s fb%d (%d)\n",

			event == MDSS_EVENT_RESUME ? "resume" : "suspend",

			mfd->index, rc);

	return rc;

}

drivers/video/msm/mdss/mdss_fb.h

+2 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2008-2013, The Linux Foundation. All rights reserved.

/* Copyright (c) 2008-2014, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -249,4 +249,5 @@ int mdss_fb_wait_for_fence(struct msm_sync_pt_data *sync_pt_data); 
void mdss_fb_signal_timeline(struct msm_sync_pt_data *sync_pt_data);

int mdss_fb_register_mdp_instance(struct msm_mdp_interface *mdp);

int mdss_fb_dcm(struct msm_fb_data_type *mfd, int req_state);

int mdss_fb_suspres_panel(struct device *dev, void *data);

#endif /* MDSS_FB_H */

drivers/video/msm/mdss/mdss_mdp.c

+4 −1
Original line number Diff line number Diff line
@@ -2596,11 +2596,12 @@ static int mdss_mdp_resume(struct platform_device *pdev) 
static int mdss_mdp_runtime_resume(struct device *dev)

{

	struct mdss_data_type *mdata = dev_get_drvdata(dev);

	bool device_on = true;

	if (!mdata)

		return -ENODEV;



	dev_dbg(dev, "pm_runtime: resuming...\n");



	device_for_each_child(dev, &device_on, mdss_fb_suspres_panel);

	mdss_mdp_footswitch_ctrl(mdata, true);



	return 0;
@@ -2620,6 +2621,7 @@ static int mdss_mdp_runtime_idle(struct device *dev) 
static int mdss_mdp_runtime_suspend(struct device *dev)

{

	struct mdss_data_type *mdata = dev_get_drvdata(dev);

	bool device_on = false;

	if (!mdata)

		return -ENODEV;

	dev_dbg(dev, "pm_runtime: suspending...\n");
@@ -2628,6 +2630,7 @@ static int mdss_mdp_runtime_suspend(struct device *dev) 
		pr_err("MDP suspend failed\n");

		return -EBUSY;

	}

	device_for_each_child(dev, &device_on, mdss_fb_suspres_panel);

	mdss_mdp_footswitch_ctrl(mdata, false);



	return 0;