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authorPaul Walmsley <paul@pwsan.com>2010-07-26 16:34:34 -0600
committerPaul Walmsley <paul@pwsan.com>2010-07-26 16:34:34 -0600
commit564889c1c02698d66db76764ee4e0a5e86903971 (patch)
treeb6bc890e1e7910a96c004b8be5fc825178bd290b /arch/arm/plat-omap/i2c.c
parent887adeac28a3e354ebb3f9aeca6fc2296c105267 (diff)
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>
Diffstat (limited to 'arch/arm/plat-omap/i2c.c')
-rw-r--r--arch/arm/plat-omap/i2c.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/arm/plat-omap/i2c.c b/arch/arm/plat-omap/i2c.c
index eec2b4993c6..a5ce4f0aad3 100644
--- a/arch/arm/plat-omap/i2c.c
+++ b/arch/arm/plat-omap/i2c.c
@@ -138,6 +138,16 @@ static inline int omap1_i2c_add_bus(struct platform_device *pdev, int bus_id)
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 @@ static inline int omap2_i2c_add_bus(struct platform_device *pdev, int bus_id)
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);