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authorRafael J. Wysocki <rjw@sisk.pl>2011-05-16 20:15:36 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2011-05-16 20:15:36 +0200
commit600b776eb39a13a28b090ba9efceb0c69d4508aa (patch)
tree3c9e5a4589dd4781b3fdf6b7c092705f1d0d9abc /arch/arm/mach-omap1
parent85eb8c8d0b0900c073b0e6f89979ac9c439ade1a (diff)
downloadop-kernel-dev-600b776eb39a13a28b090ba9efceb0c69d4508aa.zip
op-kernel-dev-600b776eb39a13a28b090ba9efceb0c69d4508aa.tar.gz
OMAP1 / PM: Use generic clock manipulation routines for runtime PM
Convert OMAP1 to using the new generic clock manipulation routines and a device power domain for runtime PM instead of overriding the platform bus type's runtime PM callbacks. This allows us to simplify OMAP1-specific code and to share some code with other platforms (shmobile in particular). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'arch/arm/mach-omap1')
-rw-r--r--arch/arm/mach-omap1/pm_bus.c69
1 files changed, 22 insertions, 47 deletions
diff --git a/arch/arm/mach-omap1/pm_bus.c b/arch/arm/mach-omap1/pm_bus.c
index 6588c22..fe31d93 100644
--- a/arch/arm/mach-omap1/pm_bus.c
+++ b/arch/arm/mach-omap1/pm_bus.c
@@ -24,75 +24,50 @@
#ifdef CONFIG_PM_RUNTIME
static int omap1_pm_runtime_suspend(struct device *dev)
{
- struct clk *iclk, *fclk;
- int ret = 0;
+ int ret;
dev_dbg(dev, "%s\n", __func__);
ret = pm_generic_runtime_suspend(dev);
+ if (ret)
+ return ret;
- fclk = clk_get(dev, "fck");
- if (!IS_ERR(fclk)) {
- clk_disable(fclk);
- clk_put(fclk);
- }
-
- iclk = clk_get(dev, "ick");
- if (!IS_ERR(iclk)) {
- clk_disable(iclk);
- clk_put(iclk);
+ ret = pm_runtime_clk_suspend(dev);
+ if (ret) {
+ pm_generic_runtime_resume(dev);
+ return ret;
}
return 0;
-};
+}
static int omap1_pm_runtime_resume(struct device *dev)
{
- struct clk *iclk, *fclk;
-
dev_dbg(dev, "%s\n", __func__);
- iclk = clk_get(dev, "ick");
- if (!IS_ERR(iclk)) {
- clk_enable(iclk);
- clk_put(iclk);
- }
+ pm_runtime_clk_resume(dev);
+ return pm_generic_runtime_resume(dev);
+}
- fclk = clk_get(dev, "fck");
- if (!IS_ERR(fclk)) {
- clk_enable(fclk);
- clk_put(fclk);
- }
+static struct dev_power_domain default_power_domain = {
+ .ops = {
+ .runtime_suspend = omap1_pm_runtime_suspend,
+ .runtime_resume = omap1_pm_runtime_resume,
+ USE_PLATFORM_PM_SLEEP_OPS
+ },
+};
- return pm_generic_runtime_resume(dev);
+static struct pm_clk_notifier_block platform_bus_notifier = {
+ .pwr_domain = &default_power_domain,
+ .con_ids = { "ick", "fck", NULL, },
};
static int __init omap1_pm_runtime_init(void)
{
- const struct dev_pm_ops *pm;
- struct dev_pm_ops *omap_pm;
-
if (!cpu_class_is_omap1())
return -ENODEV;
- pm = platform_bus_get_pm_ops();
- if (!pm) {
- pr_err("%s: unable to get dev_pm_ops from platform_bus\n",
- __func__);
- return -ENODEV;
- }
-
- omap_pm = kmemdup(pm, sizeof(struct dev_pm_ops), GFP_KERNEL);
- if (!omap_pm) {
- pr_err("%s: unable to alloc memory for new dev_pm_ops\n",
- __func__);
- return -ENOMEM;
- }
-
- omap_pm->runtime_suspend = omap1_pm_runtime_suspend;
- omap_pm->runtime_resume = omap1_pm_runtime_resume;
-
- platform_bus_set_pm_ops(omap_pm);
+ pm_runtime_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
return 0;
}
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