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: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/arm/plat-omap/include/plat/omap_device.h b/arch/arm/plat-omap/include/plat/omap_device.h
index 4327b2c90c3d..e7259c0d33ec 100644
--- a/arch/arm/plat-omap/include/plat/omap_device.h
+++ b/arch/arm/plat-omap/include/plat/omap_device.h
@@ -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;