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Commit 50cd868d authored by Abir Ghosh's avatar Abir Ghosh
Browse files

qbt: Add ioctls to acquire and release wakelock 



Add new ioctls to acquire and release kernel
wakelock.

Change-Id: I181bec508eccc6ad388d684d05c9719885992e82
Signed-off-by: default avatarAbir Ghosh <abirg@codeaurora.org>
parent 88518c1e

drivers/soc/qcom/qbt_handler.c

+26 −0
Original line number Diff line number Diff line
@@ -91,6 +91,7 @@ struct qbt_drvdata { 
	bool is_wuhb_connected;

	struct qbt_touch_config touch_config;

	struct fd_userspace_buf scrath_buf;

	atomic_t wakelock_acquired;

};



static struct qbt_drvdata *drvdata_g;
@@ -283,6 +284,11 @@ static int qbt_release(struct inode *inode, struct file *file) 
		pr_err("Invalid minor number\n");

		return -EINVAL;

	}

	if (atomic_read(&drvdata->wakelock_acquired) != 0) {

		pr_debug("Releasing wakelock\n");

		pm_relax(drvdata->dev);

		atomic_set(&drvdata->wakelock_acquired, 0);

	}

	pr_debug("exit : fd_available=%d\n", drvdata->fd_available);

	return 0;

}
@@ -411,6 +417,25 @@ static long qbt_ioctl( 
			drvdata->touch_config.rad_y);

		break;

	}

	case QBT_ACQUIRE_WAKELOCK:

	{

		if (atomic_read(&drvdata->wakelock_acquired) == 0) {

			pr_debug("Acquiring wakelock\n");

			pm_stay_awake(drvdata->dev);

		}

		atomic_inc(&drvdata->wakelock_acquired);

		break;

	}

	case QBT_RELEASE_WAKELOCK:

	{

		if (atomic_read(&drvdata->wakelock_acquired) == 0)

			break;

		if (atomic_dec_and_test(&drvdata->wakelock_acquired)) {

			pr_debug("Releasing wakelock\n");

			pm_relax(drvdata->dev);

		}

		break;

	}

	default:

		pr_err("invalid cmd %d\n", cmd);

		rc = -ENOIOCTLCMD;
@@ -1018,6 +1043,7 @@ static int qbt_probe(struct platform_device *pdev) 


	atomic_set(&drvdata->fd_available, 1);

	atomic_set(&drvdata->ipc_available, 1);

	atomic_set(&drvdata->wakelock_acquired, 0);



	mutex_init(&drvdata->mutex);

	mutex_init(&drvdata->fd_events_mutex);

include/uapi/linux/qbt_handler.h

+2 −0
Original line number Diff line number Diff line
@@ -15,6 +15,8 @@ 
#define QBT_ENABLE_FD            104

#define QBT_DISABLE_FD           105

#define QBT_CONFIGURE_TOUCH_FD   106

#define QBT_ACQUIRE_WAKELOCK     107

#define QBT_RELEASE_WAKELOCK     108



/*

 * enum qbt_fw_event -