1 files changed, 77 insertions, 10 deletions

diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
index abe933cd8f0..a37b8eb65b7 100644
--- a/arch/arm/plat-omap/omap_device.c
+++ b/arch/arm/plat-omap/omap_device.c
@@ -83,9 +83,11 @@
 #include <linux/err.h>
 #include <linux/io.h>
 #include <linux/clk.h>
+#include <linux/clkdev.h>
 
 #include <plat/omap_device.h>
 #include <plat/omap_hwmod.h>
+#include <plat/clock.h>
 
 /* These parameters are passed to _omap_device_{de,}activate() */
 #define USE_WAKEUP_LAT			0
@@ -239,12 +241,12 @@ static inline struct omap_device *_find_by_pdev(struct platform_device *pdev)
 }
 
 /**
- * _add_optional_clock_alias - Add clock alias for hwmod optional clocks
+ * _add_optional_clock_clkdev - Add clkdev entry for hwmod optional clocks
  * @od: struct omap_device *od
  *
  * For every optional clock present per hwmod per omap_device, this function
- * adds an entry in the clocks list of the form <dev-id=dev_name, con-id=role>
- * if an entry is already present in it with the form <dev-id=NULL, con-id=role>
+ * adds an entry in the clkdev table of the form <dev-id=dev_name, con-id=role>
+ * if it does not exist already.
  *
  * The function is called from inside omap_device_build_ss(), after
  * omap_device_register.
@@ -254,25 +256,39 @@ static inline struct omap_device *_find_by_pdev(struct platform_device *pdev)
  *
  * No return value.
  */
-static void _add_optional_clock_alias(struct omap_device *od,
+static void _add_optional_clock_clkdev(struct omap_device *od,
 				      struct omap_hwmod *oh)
 {
 	int i;
 
 	for (i = 0; i < oh->opt_clks_cnt; i++) {
 		struct omap_hwmod_opt_clk *oc;
-		int r;
+		struct clk *r;
+		struct clk_lookup *l;
 
 		oc = &oh->opt_clks[i];
 
 		if (!oc->_clk)
 			continue;
 
-		r = clk_add_alias(oc->role, dev_name(&od->pdev.dev),
-				  (char *)oc->clk, &od->pdev.dev);
-		if (r)
-			pr_err("omap_device: %s: clk_add_alias for %s failed\n",
+		r = clk_get_sys(dev_name(&od->pdev.dev), oc->role);
+		if (!IS_ERR(r))
+			continue; /* clkdev entry exists */
+
+		r = omap_clk_get_by_name((char *)oc->clk);
+		if (IS_ERR(r)) {
+			pr_err("omap_device: %s: omap_clk_get_by_name for %s failed\n",
+			       dev_name(&od->pdev.dev), oc->clk);
+			continue;
+		}
+
+		l = clkdev_alloc(r, oc->role, dev_name(&od->pdev.dev));
+		if (!l) {
+			pr_err("omap_device: %s: clkdev_alloc for %s failed\n",
 			       dev_name(&od->pdev.dev), oc->role);
+			return;
+		}
+		clkdev_add(l);
 	}
 }
 
@@ -280,6 +296,34 @@ static void _add_optional_clock_alias(struct omap_device *od,
 /* Public functions for use by core code */
 
 /**
+ * omap_device_get_context_loss_count - get lost context count
+ * @od: struct omap_device *
+ *
+ * Using the primary hwmod, query the context loss count for this
+ * device.
+ *
+ * Callers should consider context for this device lost any time this
+ * function returns a value different than the value the caller got
+ * the last time it called this function.
+ *
+ * If any hwmods exist for the omap_device assoiated with @pdev,
+ * return the context loss counter for that hwmod, otherwise return
+ * zero.
+ */
+u32 omap_device_get_context_loss_count(struct platform_device *pdev)
+{
+	struct omap_device *od;
+	u32 ret = 0;
+
+	od = _find_by_pdev(pdev);
+
+	if (od->hwmods_cnt)
+		ret = omap_hwmod_get_context_loss_count(od->hwmods[0]);
+
+	return ret;
+}
+
+/**
  * omap_device_count_resources - count number of struct resource entries needed
  * @od: struct omap_device *
  *
@@ -452,7 +496,7 @@ struct omap_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
 
 	for (i = 0; i < oh_cnt; i++) {
 		hwmods[i]->od = od;
-		_add_optional_clock_alias(od, hwmods[i]);
+		_add_optional_clock_clkdev(od, hwmods[i]);
 	}
 
 	if (ret)
@@ -492,6 +536,28 @@ int omap_early_device_register(struct omap_device *od)
 	return 0;
 }
 
+static int _od_runtime_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+
+	return omap_device_idle(pdev);
+}
+
+static int _od_runtime_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+
+	return omap_device_enable(pdev);
+}
+
+static struct dev_power_domain omap_device_power_domain = {
+	.ops = {
+		.runtime_suspend = _od_runtime_suspend,
+		.runtime_resume = _od_runtime_resume,
+		USE_PLATFORM_PM_SLEEP_OPS
+	}
+};
+
 /**
  * omap_device_register - register an omap_device with one omap_hwmod
  * @od: struct omap_device * to register
@@ -505,6 +571,7 @@ int omap_device_register(struct omap_device *od)
 	pr_debug("omap_device: %s: registering\n", od->pdev.name);
 
 	od->pdev.dev.parent = &omap_device_parent;
+	od->pdev.dev.pwr_domain = &omap_device_power_domain;
 	return platform_device_register(&od->pdev);
 }