From e753345bec8fef81d1e87710917f89dc75f39b2a Mon Sep 17 00:00:00 2001 From: Kevin Hilman Date: Tue, 10 Jul 2012 11:13:16 -0700 Subject: [PATCH] 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 Signed-off-by: Kevin Hilman --- arch/arm/plat-omap/include/plat/omap_device.h | 2 ++ arch/arm/plat-omap/omap_device.c | 14 +++++++++----- 2 files changed, 11 insertions(+), 5 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 * * 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; diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c index c490240bb82c..1d1b5ff78306 100644 --- a/arch/arm/plat-omap/omap_device.c +++ b/arch/arm/plat-omap/omap_device.c @@ -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; -- 2.39.2