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Commit d9e3661c authored by Banajit Goswami's avatar Banajit Goswami
Browse files

soundwire: turn soundwire device off if device is down 



When Soundwire master device down callback is called, rather
than calling device suspend, call device down and turn off
clock.

Change-Id: I0c9b2b5cd3b816a6bb840309c588e02cf5ebb7c8
Signed-off-by: default avatarBanajit Goswami <bgoswami@codeaurora.org>
parent 77813844

drivers/soundwire/swr-wcd-ctrl.c

+28 −1
Original line number Original line Diff line number Diff line
@@ -1224,6 +1224,33 @@ exit: 
}

}

#endif /* CONFIG_PM_RUNTIME */

#endif /* CONFIG_PM_RUNTIME */





static int swrm_device_down(struct device *dev)

{

	struct platform_device *pdev = to_platform_device(dev);

	struct swr_mstr_ctrl *swrm = platform_get_drvdata(pdev);

	int ret = 0;

	struct swr_master *mstr = &swrm->master;

	struct swr_device *swr_dev;



	dev_dbg(dev, "%s: swrm state: %d\n", __func__, swrm->state);

	mutex_lock(&swrm->reslock);

	if ((swrm->state == SWR_MSTR_RESUME) ||

	    (swrm->state == SWR_MSTR_UP)) {

		list_for_each_entry(swr_dev, &mstr->devices, dev_list) {

			ret = swr_device_down(swr_dev);

			if (ret)

				dev_err(dev,

					"%s: failed to shutdown swr dev %d\n",

					__func__, swr_dev->dev_num);

		}

		dev_dbg(dev, "%s: Shutting down SWRM\n", __func__);

		pm_runtime_set_suspended(dev);

		swrm_clk_request(swrm, false);

	}

	mutex_unlock(&swrm->reslock);

	return ret;

}



/**

/**

 * swrm_wcd_notify - parent device can notify to soundwire master through

 * swrm_wcd_notify - parent device can notify to soundwire master through

 * this function

 * this function
@@ -1266,7 +1293,7 @@ int swrm_wcd_notify(struct platform_device *pdev, u32 id, void *data) 
			dev_dbg(swrm->dev, "%s: SWR master is already Down: %d\n",

			dev_dbg(swrm->dev, "%s: SWR master is already Down: %d\n",

				__func__, swrm->state);

				__func__, swrm->state);

		else

		else

			swrm_runtime_suspend(&pdev->dev);

			swrm_device_down(&pdev->dev);

		mutex_unlock(&swrm->mlock);

		mutex_unlock(&swrm->mlock);

		break;

		break;

	case SWR_DEVICE_UP:

	case SWR_DEVICE_UP: