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Diffstat (limited to 'arch/arm/plat-omap/omap-pm-noop.c')
-rw-r--r--arch/arm/plat-omap/omap-pm-noop.c61
1 files changed, 48 insertions, 13 deletions
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