OMAP4: Adding voltage driver support

OMAP4 has three scalable voltage domains vdd_mpu, vdd_iva
and vdd_core. This patch adds the voltage tables and other
configurable voltage processor and voltage controller
settings to control these three scalable domains in OMAP4.
Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

arch/arm/mach-omap2/Makefile

@@ -62,7 +62,7 @@ obj-$(CONFIG_ARCH_OMAP2)		+= pm24xx.o
 obj-$(CONFIG_ARCH_OMAP2)		+= sleep24xx.o pm_bus.o voltage.o
 obj-$(CONFIG_ARCH_OMAP3)		+= pm34xx.o sleep34xx.o voltage.o \
 					   cpuidle34xx.o pm_bus.o
-obj-$(CONFIG_ARCH_OMAP4)		+= pm44xx.o pm_bus.o
+obj-$(CONFIG_ARCH_OMAP4)		+= pm44xx.o voltage.o pm_bus.o
 obj-$(CONFIG_PM_DEBUG)			+= pm-debug.o
 obj-$(CONFIG_OMAP_SMARTREFLEX)          += sr_device.o smartreflex.o
 obj-$(CONFIG_OMAP_SMARTREFLEX_CLASS3)	+= smartreflex-class3.o

arch/arm/mach-omap2/control.h

@@ -181,6 +181,18 @@
 #define OMAP3630_CONTROL_FUSE_OPP50_VDD2        (OMAP2_CONTROL_GENERAL + 0x0128)
 #define OMAP3630_CONTROL_FUSE_OPP100_VDD2       (OMAP2_CONTROL_GENERAL + 0x012C)
 
+/* OMAP44xx control efuse offsets */
+#define OMAP44XX_CONTROL_FUSE_IVA_OPP50		0x22C
+#define OMAP44XX_CONTROL_FUSE_IVA_OPP100	0x22F
+#define OMAP44XX_CONTROL_FUSE_IVA_OPPTURBO	0x232
+#define OMAP44XX_CONTROL_FUSE_IVA_OPPNITRO	0x235
+#define OMAP44XX_CONTROL_FUSE_MPU_OPP50		0x240
+#define OMAP44XX_CONTROL_FUSE_MPU_OPP100	0x243
+#define OMAP44XX_CONTROL_FUSE_MPU_OPPTURBO	0x246
+#define OMAP44XX_CONTROL_FUSE_MPU_OPPNITRO	0x249
+#define OMAP44XX_CONTROL_FUSE_CORE_OPP50	0x254
+#define OMAP44XX_CONTROL_FUSE_CORE_OPP100	0x257
+
 /* AM35XX only CONTROL_GENERAL register offsets */
 #define AM35XX_CONTROL_MSUSPENDMUX_6    (OMAP2_CONTROL_GENERAL + 0x0038)
 #define AM35XX_CONTROL_DEVCONF2         (OMAP2_CONTROL_GENERAL + 0x0310)

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

@@ -44,6 +44,18 @@
 #define OMAP3630_VDD_CORE_OPP50_UV		1000000
 #define OMAP3630_VDD_CORE_OPP100_UV		1200000
 
+#define OMAP4430_VDD_MPU_OPP50_UV		930000
+#define OMAP4430_VDD_MPU_OPP100_UV		1100000
+#define OMAP4430_VDD_MPU_OPPTURBO_UV		1260000
+#define OMAP4430_VDD_MPU_OPPNITRO_UV		1350000
+
+#define OMAP4430_VDD_IVA_OPP50_UV		930000
+#define OMAP4430_VDD_IVA_OPP100_UV		1100000
+#define OMAP4430_VDD_IVA_OPPTURBO_UV		1260000
+
+#define OMAP4430_VDD_CORE_OPP50_UV		930000
+#define OMAP4430_VDD_CORE_OPP100_UV		1100000
+
 /**
  * struct voltagedomain - omap voltage domain global structure.
  * @name:	Name of the voltage domain which can be used as a unique