X-Git-Url: http://git.samba.org/samba.git/?a=blobdiff_plain;f=arch%2Farm%2Fplat-omap%2Fomap-pm-noop.c;h=e129ce80c53b515b934d940bfc5fe09163ddbbdd;hb=3e7561636f3f7f9b2942f6f90b021fdaeb0fe0ee;hp=186bca82cfab76dbe64cb8ebb883efedbee18ba2;hpb=2c1f1895ef2aa8f0e5497893eff71304aef332e1;p=sfrench%2Fcifs-2.6.git

diff --git a/arch/arm/plat-omap/omap-pm-noop.c b/arch/arm/plat-omap/omap-pm-noop.c
index 186bca82cfab..e129ce80c53b 100644
--- a/arch/arm/plat-omap/omap-pm-noop.c
+++ b/arch/arm/plat-omap/omap-pm-noop.c
@@ -34,11 +34,11 @@ struct omap_opp *l3_opps;
  * Device-driver-originated constraints (via board-*.c files)
  */
 
-void omap_pm_set_max_mpu_wakeup_lat(struct device *dev, long t)
+int omap_pm_set_max_mpu_wakeup_lat(struct device *dev, long t)
 {
 	if (!dev || t < -1) {
-		WARN_ON(1);
-		return;
+		WARN(1, "OMAP PM: %s: invalid parameter(s)", __func__);
+		return -EINVAL;
 	};
 
 	if (t == -1)
@@ -58,14 +58,16 @@ void omap_pm_set_max_mpu_wakeup_lat(struct device *dev, long t)
 	 *
 	 * TI CDP code can call constraint_set here.
 	 */
+
+	return 0;
 }
 
-void omap_pm_set_min_bus_tput(struct device *dev, u8 agent_id, unsigned long r)
+int omap_pm_set_min_bus_tput(struct device *dev, u8 agent_id, unsigned long r)
 {
 	if (!dev || (agent_id != OCP_INITIATOR_AGENT &&
 	    agent_id != OCP_TARGET_AGENT)) {
-		WARN_ON(1);
-		return;
+		WARN(1, "OMAP PM: %s: invalid parameter(s)", __func__);
+		return -EINVAL;
 	};
 
 	if (r == 0)
@@ -83,13 +85,16 @@ void omap_pm_set_min_bus_tput(struct device *dev, u8 agent_id, unsigned long r)
 	 *
 	 * TI CDP code can call constraint_set here on the VDD2 OPP.
 	 */
+
+	return 0;
 }
 
-void omap_pm_set_max_dev_wakeup_lat(struct device *dev, long t)
+int omap_pm_set_max_dev_wakeup_lat(struct device *req_dev, struct device *dev,
+				   long t)
 {
-	if (!dev || t < -1) {
-		WARN_ON(1);
-		return;
+	if (!req_dev || !dev || t < -1) {
+		WARN(1, "OMAP PM: %s: invalid parameter(s)", __func__);
+		return -EINVAL;
 	};
 
 	if (t == -1)
@@ -111,13 +116,15 @@ void omap_pm_set_max_dev_wakeup_lat(struct device *dev, long t)
 	 *
 	 * TI CDP code can call constraint_set here.
 	 */
+
+	return 0;
 }
 
-void omap_pm_set_max_sdma_lat(struct device *dev, long t)
+int omap_pm_set_max_sdma_lat(struct device *dev, long t)
 {
 	if (!dev || t < -1) {
-		WARN_ON(1);
-		return;
+		WARN(1, "OMAP PM: %s: invalid parameter(s)", __func__);
+		return -EINVAL;
 	};
 
 	if (t == -1)
@@ -139,8 +146,36 @@ void omap_pm_set_max_sdma_lat(struct device *dev, long t)
 	 * TI CDP code can call constraint_set here.
 	 */
 
+	return 0;
 }
 
+int omap_pm_set_min_clk_rate(struct device *dev, struct clk *c, long r)
+{
+	if (!dev || !c || r < 0) {
+		WARN(1, "OMAP PM: %s: invalid parameter(s)", __func__);
+		return -EINVAL;
+	}
+
+	if (r == 0)
+		pr_debug("OMAP PM: remove min clk rate constraint: "
+			 "dev %s\n", dev_name(dev));
+	else
+		pr_debug("OMAP PM: add min clk rate constraint: "
+			 "dev %s, rate = %ld Hz\n", dev_name(dev), r);
+
+	/*
+	 * Code in a real implementation should keep track of these
+	 * constraints on the clock, and determine the highest minimum
+	 * clock rate.  It should iterate over each OPP and determine
+	 * whether the OPP will result in a clock rate that would
+	 * satisfy this constraint (and any other PM constraint in effect
+	 * at that time).  Once it finds the lowest-voltage OPP that
+	 * meets those conditions, it should switch to it, or return
+	 * an error if the code is not capable of doing so.
+	 */
+
+	return 0;
+}
 
 /*
  * DSP Bridge-specific constraints