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authorOlof Johansson <olof@lixom.net>2012-10-01 21:19:17 (GMT)
committerOlof Johansson <olof@lixom.net>2012-10-01 21:19:17 (GMT)
commit6d55d5968a8622f3ea20ec40737aea1cfba6438c (patch)
tree72481307c22f9b6170591cece793ea24f97a9ddb /arch/arm/plat-omap
parentf7b967bffefe69f1ad8b79e263237ec1feba7b9b (diff)
parentb6e3b5c2fea9c76617e101cbbc54ed14961f9dee (diff)
downloadlinux-6d55d5968a8622f3ea20ec40737aea1cfba6438c.tar.xz
Merge branch 'next/soc' into HEAD
Conflicts: arch/arm/mach-ux500/clock.c arch/arm/mach-ux500/cpu.c drivers/clocksource/Makefile
Diffstat (limited to 'arch/arm/plat-omap')
-rw-r--r--arch/arm/plat-omap/include/plat/omap_device.h2
-rw-r--r--arch/arm/plat-omap/include/plat/omap_hwmod.h1
-rw-r--r--arch/arm/plat-omap/omap_device.c56
3 files changed, 54 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 4327b2c..e7259c0 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;
diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h
index 6132972..9b9646c 100644
--- a/arch/arm/plat-omap/include/plat/omap_hwmod.h
+++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h
@@ -658,6 +658,7 @@ extern int omap2420_hwmod_init(void);
extern int omap2430_hwmod_init(void);
extern int omap3xxx_hwmod_init(void);
extern int omap44xx_hwmod_init(void);
+extern int am33xx_hwmod_init(void);
extern int __init omap_hwmod_register_links(struct omap_hwmod_ocp_if **ois);
diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
index b59edb0..5c93c09 100644
--- a/arch/arm/plat-omap/omap_device.c
+++ b/arch/arm/plat-omap/omap_device.c
@@ -380,17 +380,21 @@ 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;
@@ -747,6 +751,10 @@ static int _od_suspend_noirq(struct device *dev)
struct omap_device *od = to_omap_device(pdev);
int ret;
+ /* Don't attempt late suspend on a driver that is not bound */
+ if (od->_driver_status != BUS_NOTIFY_BOUND_DRIVER)
+ return 0;
+
ret = pm_generic_suspend_noirq(dev);
if (!ret && !pm_runtime_status_suspended(dev)) {
@@ -1120,3 +1128,41 @@ static int __init omap_device_init(void)
return 0;
}
core_initcall(omap_device_init);
+
+/**
+ * omap_device_late_idle - idle devices without drivers
+ * @dev: struct device * associated with omap_device
+ * @data: unused
+ *
+ * Check the driver bound status of this device, and idle it
+ * if there is no driver attached.
+ */
+static int __init omap_device_late_idle(struct device *dev, void *data)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct omap_device *od = to_omap_device(pdev);
+
+ if (!od)
+ return 0;
+
+ /*
+ * If omap_device state is enabled, but has no driver bound,
+ * idle it.
+ */
+ if (od->_driver_status != BUS_NOTIFY_BOUND_DRIVER) {
+ if (od->_state == OMAP_DEVICE_STATE_ENABLED) {
+ dev_warn(dev, "%s: enabled but no driver. Idling\n",
+ __func__);
+ omap_device_idle(pdev);
+ }
+ }
+
+ return 0;
+}
+
+static int __init omap_device_late_init(void)
+{
+ bus_for_each_dev(&platform_bus_type, NULL, NULL, omap_device_late_idle);
+ return 0;
+}
+late_initcall(omap_device_late_init);