OMAP4: pm.c extensions for OMAP4 support

OMAP4 has an iva device and a dsp devcice where as OMAP2/3
has only an iva device. In this file the iva device in the
system is registered under the name dsp_dev and the API
to retrieve the iva device is omap2_get_dsp_device.
This patch renames the dsp_dev to iva_dev, renames
omap2_get_dsp_device to omap2_get_iva_device,
registers dsp_dev for OMAP4 and adds a new API
omap4_get_dsp_device to retrieve the dep_dev.

Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

arch/arm/mach-omap2/pm.c

@@ -21,8 +21,9 @@
 static struct omap_device_pm_latency *pm_lats;
 
 static struct device *mpu_dev;
-static struct device *dsp_dev;
+static struct device *iva_dev;
 static struct device *l3_dev;
+static struct device *dsp_dev;
 
 struct device *omap2_get_mpuss_device(void)
 {
@@ -30,10 +31,10 @@ struct device *omap2_get_mpuss_device(void)
 	return mpu_dev;
 }
 
-struct device *omap2_get_dsp_device(void)
+struct device *omap2_get_iva_device(void)
 {
-	WARN_ON_ONCE(!dsp_dev);
-	return dsp_dev;
+	WARN_ON_ONCE(!iva_dev);
+	return iva_dev;
 }
 
 struct device *omap2_get_l3_device(void)
@@ -42,6 +43,13 @@ struct device *omap2_get_l3_device(void)
 	return l3_dev;
 }
 
+struct device *omap4_get_dsp_device(void)
+{
+	WARN_ON_ONCE(!dsp_dev);
+	return dsp_dev;
+}
+EXPORT_SYMBOL(omap4_get_dsp_device);
+
 /* static int _init_omap_device(struct omap_hwmod *oh, void *user) */
 static int _init_omap_device(char *name, struct device **new_dev)
 {
@@ -69,7 +77,9 @@ static int _init_omap_device(char *name, struct device **new_dev)
 static void omap2_init_processor_devices(void)
 {
 	_init_omap_device("mpu", &mpu_dev);
-	_init_omap_device("iva", &dsp_dev);
+	_init_omap_device("iva", &iva_dev);
+	if (cpu_is_omap44xx())
+		_init_omap_device("dsp", &dsp_dev);
 	_init_omap_device("l3_main", &l3_dev);
 }
 

arch/arm/plat-omap/include/plat/common.h

@@ -91,7 +91,8 @@ void omap3_map_io(void);
 })
 
 extern struct device *omap2_get_mpuss_device(void);
-extern struct device *omap2_get_dsp_device(void);
+extern struct device *omap2_get_iva_device(void);
 extern struct device *omap2_get_l3_device(void);
+extern struct device *omap4_get_dsp_device(void);
 
 #endif /* __ARCH_ARM_MACH_OMAP_COMMON_H */