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Commit e753345b authored by Kevin Hilman's avatar Kevin Hilman
Browse files

ARM: OMAP: omap_device: keep track of driver bound status 



Use the bus notifier to keep track of driver bound status by adding a
new internal field to struct omap_device: _driver_status.

This will be useful for follow-up patches which need to know whether
or not a driver is bound in order to make intelligent omap_device
enable/idle decisions.

Reviewed-by: default avatarPaul Walmsley <paul@pwsan.com>
Signed-off-by: default avatarKevin Hilman <khilman@ti.com>
parent 0d7614f0

arch/arm/plat-omap/include/plat/omap_device.h

+2 −0
Original line number Diff line number Diff line
@@ -60,6 +60,7 @@ extern struct dev_pm_domain omap_device_pm_domain; 
 * @_dev_wakeup_lat_limit: dev wakeup latency limit in nsec - set by OMAP PM

 * @_state: one of OMAP_DEVICE_STATE_* (see above)

 * @flags: device flags

 * @_driver_status: one of BUS_NOTIFY_*_DRIVER from <linux/device.h>

 *

 * Integrates omap_hwmod data into Linux platform_device.

 *
@@ -73,6 +74,7 @@ struct omap_device { 
	struct omap_device_pm_latency	*pm_lats;

	u32				dev_wakeup_lat;

	u32				_dev_wakeup_lat_limit;

	unsigned long			_driver_status;

	u8				pm_lats_cnt;

	s8				pm_lat_level;

	u8				hwmods_cnt;

arch/arm/plat-omap/omap_device.c

+9 −5
Original line number Diff line number Diff line
@@ -385,17 +385,21 @@ static int _omap_device_notifier_call(struct notifier_block *nb, 
				      unsigned long event, void *dev)

{

	struct platform_device *pdev = to_platform_device(dev);

	struct omap_device *od;



	switch (event) {

	case BUS_NOTIFY_ADD_DEVICE:

		if (pdev->dev.of_node)

			omap_device_build_from_dt(pdev);

		break;



	case BUS_NOTIFY_DEL_DEVICE:

		if (pdev->archdata.od)

			omap_device_delete(pdev->archdata.od);

		break;

	case BUS_NOTIFY_ADD_DEVICE:

		if (pdev->dev.of_node)

			omap_device_build_from_dt(pdev);

		/* fall through */

	default:

		od = to_omap_device(pdev);

		if (od)

			od->_driver_status = event;

	}



	return NOTIFY_DONE;