summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-omap2/i2c.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-omap2/i2c.c')
-rw-r--r--arch/arm/mach-omap2/i2c.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/i2c.c b/arch/arm/mach-omap2/i2c.c
index fbb9b152cd5e..df6d6acbc9ed 100644
--- a/arch/arm/mach-omap2/i2c.c
+++ b/arch/arm/mach-omap2/i2c.c
@@ -120,6 +120,16 @@ static int __init omap_i2c_nr_ports(void)
return ports;
}
+/*
+ * 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 const char name[] = "omap_i2c";
int __init omap_i2c_add_bus(struct omap_i2c_bus_platform_data *i2c_pdata,
@@ -157,6 +167,15 @@ int __init omap_i2c_add_bus(struct omap_i2c_bus_platform_data *i2c_pdata,
dev_attr = (struct omap_i2c_dev_attr *)oh->dev_attr;
pdata->flags = dev_attr->flags;
+ /*
+ * When waiting for completion of a i2c transfer, we need to
+ * set a wake up latency constraint for the MPU. This is to
+ * ensure quick enough wakeup from idle, when transfer
+ * completes.
+ * Only omap3 has support for constraints
+ */
+ if (cpu_is_omap34xx())
+ pdata->set_mpu_wkup_lat = omap_pm_set_max_mpu_wakeup_lat_compat;
pdev = omap_device_build(name, bus_id, oh, pdata,
sizeof(struct omap_i2c_bus_platform_data),
NULL, 0, 0);