OMAP: PM constraints: add return values; add requesting device param to omap_pm_set_max_dev_wakeup_lat()
Add return values to the PM constraint functions. This allows the PM
core to provide feedback to the caller if a constraint is not
possible. Update the one upstream user of omap_pm_set_max_mpu_wakeup_lat()
to add a compatibility wrapper, needed until the driver is changed.
Update some of the documentation to conform more closely to kerneldoc style.
Add an additional device parameter to omap_pm_set_max_dev_wakeup_lat()
to identify the device requesting the constraint. This is so repeated calls
to omap_pm_set_max_dev_wakeup_lat() with the same requesting device can
override the device's previously-set constraint. Also, it allows the PM
core to make a decision as to whether or not the constraint should be
satisfied, based on the caller's identity.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
diff --git a/arch/arm/plat-omap/i2c.c b/arch/arm/plat-omap/i2c.c
index eec2b49..a5ce4f0 100644
--- a/arch/arm/plat-omap/i2c.c
+++ b/arch/arm/plat-omap/i2c.c
@@ -138,6 +138,16 @@
return platform_device_register(pdev);
}
+/*
+ * XXX This function is a temporary compatibility wrapper - only
+ * needed until the I2C driver can be converted to call
+ * omap_pm_set_max_dev_wakeup_lat() and handle a return code.
+ */
+static void omap_pm_set_max_mpu_wakeup_lat_compat(struct device *dev, long t)
+{
+ omap_pm_set_max_mpu_wakeup_lat(dev, t);
+}
+
static inline int omap2_i2c_add_bus(struct platform_device *pdev, int bus_id)
{
struct resource *res;
@@ -168,7 +178,7 @@
struct omap_i2c_bus_platform_data *pd;
pd = pdev->dev.platform_data;
- pd->set_mpu_wkup_lat = omap_pm_set_max_mpu_wakeup_lat;
+ pd->set_mpu_wkup_lat = omap_pm_set_max_mpu_wakeup_lat_compat;
}
return platform_device_register(pdev);