ARM: OMAP: omap_device: remove omap_device_parent

Currently all omap_devices are forced to have the dummy device
'omap_device_parent' as a parent.  This was used to distinguish
omap_devices from "normal" platform_devices in the OMAP PM core code.

Now that we implement the PM core using PM domains, this is no longer
needed, and is removed.

This also frees up omap_devices to have a more complex parent/child
relationships that model actual device relationships.

The only in-tree user of omap_device_parent was the OMAP PM layer to
handle lost-context count for omap_devices.  That is now converted to
use the presence of the omap_device_pm_domain instead.

Signed-off-by: Kevin Hilman <khilman@ti.com>

diff --git a/arch/arm/plat-omap/include/plat/omap_device.h b/arch/arm/plat-omap/include/plat/omap_device.h
index 05f7615..4327b2c 100644 (file)
--- a/arch/arm/plat-omap/include/plat/omap_device.h
+++ b/arch/arm/plat-omap/include/plat/omap_device.h
@@ -36,7 +36,7 @@
 
 #include <plat/omap_hwmod.h>
 
-extern struct device omap_device_parent;
+extern struct dev_pm_domain omap_device_pm_domain;
 
 /* omap_device._state values */
 #define OMAP_DEVICE_STATE_UNKNOWN      0

diff --git a/arch/arm/plat-omap/omap-pm-noop.c b/arch/arm/plat-omap/omap-pm-noop.c
index 3dc3801..5a97b4d 100644 (file)
--- a/arch/arm/plat-omap/omap-pm-noop.c
+++ b/arch/arm/plat-omap/omap-pm-noop.c
@@ -319,7 +319,7 @@ int omap_pm_get_dev_context_loss_count(struct device *dev)
        if (WARN_ON(!dev))
                return -ENODEV;
 
-       if (dev->parent == &omap_device_parent) {
+       if (dev->pm_domain == &omap_device_pm_domain) {
                count = omap_device_get_context_loss_count(pdev);
        } else {
                WARN_ONCE(off_mode_enabled, "omap_pm: using dummy context loss counter; device %s should be converted to omap_device",

diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
index 2d00ab0..1ae9d6f 100644 (file)
--- a/arch/arm/plat-omap/omap_device.c
+++ b/arch/arm/plat-omap/omap_device.c
@@ -314,8 +314,6 @@ static void _add_hwmod_clocks_clkdev(struct omap_device *od,
 }
 
 
-static struct dev_pm_domain omap_device_pm_domain;
-
 /**
  * omap_device_build_from_dt - build an omap_device with multiple hwmods
  * @pdev_name: name of the platform_device driver to use
@@ -793,7 +791,7 @@ static int _od_resume_noirq(struct device *dev)
 #define _od_resume_noirq NULL
 #endif
 
-static struct dev_pm_domain omap_device_pm_domain = {
+struct dev_pm_domain omap_device_pm_domain = {
        .ops = {
                SET_RUNTIME_PM_OPS(_od_runtime_suspend, _od_runtime_resume,
                                   _od_runtime_idle)
@@ -815,7 +813,6 @@ int omap_device_register(struct platform_device *pdev)
 {
        pr_debug("omap_device: %s: registering\n", pdev->name);
 
-       pdev->dev.parent = &omap_device_parent;
        pdev->dev.pm_domain = &omap_device_pm_domain;
        return platform_device_add(pdev);
 }
@@ -1124,11 +1121,6 @@ int omap_device_enable_clocks(struct omap_device *od)
        return 0;
 }
 
-struct device omap_device_parent = {
-       .init_name      = "omap",
-       .parent         = &platform_bus,
-};
-
 static struct notifier_block platform_nb = {
        .notifier_call = _omap_device_notifier_call,
 };
@@ -1136,6 +1128,6 @@ static struct notifier_block platform_nb = {
 static int __init omap_device_init(void)
 {
        bus_register_notifier(&platform_bus_type, &platform_nb);
-       return device_register(&omap_device_parent);
+       return 0;
 }
 core_initcall(omap_device_init);