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Commit 7cf8ae52 authored by Sudheer Papothi's avatar Sudheer Papothi Committed by Gerrit - the friendly Code Review server
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SoC: swr-mstr: Add support for device wakeup 



Add support for soundwire device wakeup through bus driver.
These APIs will be used by slave driver through bus driver
to vote and unvote for master wakeup, when it requires
master for register access operations. Master will be
aware of the slave usage with the vote for device wakeup.

Change-Id: I24f0ec0344f05926dc866edb04294cb31348e1ce
Signed-off-by: default avatarSudheer Papothi <spapothi@codeaurora.org>
Signed-off-by: default avatarRamprasad Katkam <katkam@codeaurora.org>
parent bdf9804a

soc/swr-mstr-ctrl.c

+28 −0
Original line number Diff line number Diff line
@@ -1543,6 +1543,32 @@ static int swrm_get_logical_dev_num(struct swr_master *mstr, u64 dev_id, 
	pm_runtime_put_autosuspend(swrm->dev);

	return ret;

}



static void swrm_device_wakeup_vote(struct swr_master *mstr)

{

	struct swr_mstr_ctrl *swrm = swr_get_ctrl_data(mstr);



	if (!swrm) {

		pr_err("%s: Invalid handle to swr controller\n",

			__func__);

		return;

	}

	pm_runtime_get_sync(swrm->dev);

}



static void swrm_device_wakeup_unvote(struct swr_master *mstr)

{

	struct swr_mstr_ctrl *swrm = swr_get_ctrl_data(mstr);



	if (!swrm) {

		pr_err("%s: Invalid handle to swr controller\n",

			__func__);

		return;

	}

	pm_runtime_mark_last_busy(swrm->dev);

	pm_runtime_put_autosuspend(swrm->dev);

}



static int swrm_master_init(struct swr_mstr_ctrl *swrm)

{

	int ret = 0;
@@ -1785,6 +1811,8 @@ static int swrm_probe(struct platform_device *pdev) 
	swrm->master.disconnect_port = swrm_disconnect_port;

	swrm->master.slvdev_datapath_control = swrm_slvdev_datapath_control;

	swrm->master.remove_from_group = swrm_remove_from_group;

	swrm->master.device_wakeup_vote = swrm_device_wakeup_vote;

	swrm->master.device_wakeup_unvote = swrm_device_wakeup_unvote;

	swrm->master.dev.parent = &pdev->dev;

	swrm->master.dev.of_node = pdev->dev.of_node;

	swrm->master.num_port = 0;