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Commit e8c8ce5e authored by E V Ravi's avatar E V Ravi
Browse files

Add S2R and S2D support in KMD 



S2R: Implement .suspend() and .resume()
S2D: Implement .thaw() and .restore().

Change-Id: Idef319f8f67895fcadb838fb72f03187799401c8
Signed-off-by: default avatarE V Ravi <evenka@codeaurora.org>
parent 2237d580

drivers/media/platform/msm/ais/cam_req_mgr/cam_req_mgr_dev.c

+59 −0
Original line number Diff line number Diff line
@@ -745,6 +745,64 @@ static const struct of_device_id cam_req_mgr_dt_match[] = { 
};

MODULE_DEVICE_TABLE(of, cam_dt_match);



static int cam_pm_suspend(struct device *pdev)

{

	struct v4l2_event event;



	event.id = V4L_EVENT_CAM_REQ_MGR_S2R_SUSPEND;

	event.type = V4L_EVENT_CAM_REQ_MGR_EVENT;

	CAM_DBG(CAM_CRM, "Queue S2R suspend event");

	v4l2_event_queue(g_dev.video, &event);

	return 0;

}



static int cam_pm_resume(struct device *pdev)

{

	struct v4l2_event event;



	event.id = V4L_EVENT_CAM_REQ_MGR_S2R_RESUME;

	event.type = V4L_EVENT_CAM_REQ_MGR_EVENT;

	CAM_DBG(CAM_CRM, "Queue S2R resume event");

	v4l2_event_queue(g_dev.video, &event);

	return 0;

}



static int cam_pm_freeze(struct device *pdev)

{

	CAM_DBG(CAM_CRM, "Freeze done for cam_req_mgr driver");

	return 0;

}



static int cam_pm_restore(struct device *pdev)

{

	struct v4l2_event event;



	event.id = V4L_EVENT_CAM_REQ_MGR_HIBERNATION_RESUME;

	event.type = V4L_EVENT_CAM_REQ_MGR_EVENT;

	CAM_DBG(CAM_CRM, "Queue hibernation restore event");

	v4l2_event_queue(g_dev.video, &event);

	return 0;

}



static int cam_pm_thaw(struct device *pdev)

{

	struct v4l2_event event;



	event.id = V4L_EVENT_CAM_REQ_MGR_HIBERNATION_SUSPEND;

	event.type = V4L_EVENT_CAM_REQ_MGR_EVENT;

	CAM_DBG(CAM_CRM, "Queue hibernation thaw event");

	v4l2_event_queue(g_dev.video, &event);

	return 0;

}



static const struct dev_pm_ops cam_pm_ops = {

	.suspend = &cam_pm_suspend,

	.resume = &cam_pm_resume,

	.freeze = &cam_pm_freeze,

	.restore = &cam_pm_restore,

	.thaw = &cam_pm_thaw,

};



static struct platform_driver cam_req_mgr_driver = {

	.probe = cam_req_mgr_probe,

	.remove = cam_req_mgr_remove,
@@ -753,6 +811,7 @@ static struct platform_driver cam_req_mgr_driver = { 
		.owner = THIS_MODULE,

		.of_match_table = cam_req_mgr_dt_match,

		.suppress_bind_attrs = true,

		.pm = &cam_pm_ops,

	},

};

include/uapi/media/cam_req_mgr.h

+9 −3
Original line number Diff line number Diff line
@@ -47,6 +47,12 @@ 
#define V4L_EVENT_CAM_REQ_MGR_ERROR                  1

#define V4L_EVENT_CAM_REQ_MGR_SOF_BOOT_TS            2



/* Suspend to RAM and Hibernation events */

#define V4L_EVENT_CAM_REQ_MGR_S2R_SUSPEND           10

#define V4L_EVENT_CAM_REQ_MGR_S2R_RESUME            11

#define V4L_EVENT_CAM_REQ_MGR_HIBERNATION_SUSPEND   12

#define V4L_EVENT_CAM_REQ_MGR_HIBERNATION_RESUME    13



/* SOF Event status */

#define CAM_REQ_MGR_SOF_EVENT_SUCCESS           0

#define CAM_REQ_MGR_SOF_EVENT_ERROR             1