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Commit 35024960 authored by Indrasena Reddy G's avatar Indrasena Reddy G Committed by Gerrit - the friendly Code Review server
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soc: qcom: bgrsb: Add wake lock support on bgrsb gilnk transaction. 



During PM suspend if there is any bgrsb glink trasanction is happening
system will wait till end of the transaction.

Change-Id: I127b54920c3fc0729482d097ca2135da19cd836a
Signed-off-by: default avatarIndrasena Reddy G <gisena@codeaurora.org>
parent 36e92370

drivers/soc/qcom/bg_rsb.c

+8 −0
Original line number Diff line number Diff line
@@ -122,6 +122,8 @@ struct bgrsb_priv { 


	struct device *ldev;



	struct wakeup_source bgrsb_ws;



	wait_queue_head_t link_state_wait;



	uint32_t calbrtion_intrvl;
@@ -462,6 +464,7 @@ static int bgrsb_tx_msg(struct bgrsb_priv *dev, void *msg, size_t len) 
	if (!dev->chnl_state)

		return -ENODEV;



	__pm_stay_awake(&dev->bgrsb_ws);

	mutex_lock(&dev->glink_mutex);

	init_completion(&dev->tx_done);

	init_completion(&dev->bg_resp_cmplt);
@@ -507,6 +510,7 @@ static int bgrsb_tx_msg(struct bgrsb_priv *dev, void *msg, size_t len) 


err_ret:

	mutex_unlock(&dev->glink_mutex);

	__pm_relax(&dev->bgrsb_ws);

	return rc;

}
@@ -904,6 +908,9 @@ static int bg_rsb_probe(struct platform_device *pdev) 
	if (!dev)

		return -ENOMEM;



	/* Add wake lock for PM suspend */

	wakeup_source_init(&dev->bgrsb_ws, "BGRSB_wake_lock");



	dev->bgrsb_current_state = BGRSB_STATE_UNKNOWN;

	rc = bgrsb_init(dev);

	if (rc)
@@ -964,6 +971,7 @@ static int bg_rsb_remove(struct platform_device *pdev) 
	destroy_workqueue(dev->bgrsb_event_wq);

	destroy_workqueue(dev->bgrsb_wq);

	input_free_device(dev->input);

	wakeup_source_trash(&dev->bgrsb_ws);



	return 0;

}