rk3188: grf add io power domain voltage api

diff --git a/arch/arm/mach-rk3188/include/mach/grf.h b/arch/arm/mach-rk3188/include/mach/grf.h
index 288e813249ddc53f2508d0d6882bc26f1c47815d..a76496d10a7cb4431d944a45a482434651acfac5 100644 (file)
--- a/arch/arm/mach-rk3188/include/mach/grf.h
+++ b/arch/arm/mach-rk3188/include/mach/grf.h
@@ -1,6 +1,8 @@
 #ifndef __MACH_GRF_H
 #define __MACH_GRF_H
 
+#include <asm/io.h>
+
 #define GRF_GPIO0L_DIR          0x0000
 #define GRF_GPIO0H_DIR          0x0004
 #define GRF_GPIO1L_DIR          0x0008
@@ -108,4 +110,31 @@
 #define GRF_FLASH_DATA_PULL     0x01a0
 #define GRF_FLASH_CMD_PULL      0x01a4
 
+enum grf_io_power_domain_voltage {
+       IO_PD_VOLTAGE_3_3V = 0,
+       IO_PD_VOLTAGE_1_8V = 1,
+};
+
+enum grf_io_power_domain {
+       IO_PD_AP0 = 8,
+       IO_PD_AP1,
+       IO_PD_CIF,
+       IO_PD_FLASH,
+       IO_PD_VCCIO0,
+       IO_PD_VCCIO1,
+       IO_PD_LCDC0,
+       IO_PD_LCDC1,
+};
+
+static inline void grf_set_io_power_domain_voltage(enum grf_io_power_domain pd, enum grf_io_power_domain_voltage volt)
+{
+       writel_relaxed((0x10000 + volt) << pd, RK30_GRF_BASE + GRF_IO_CON4);
+       dsb();
+}
+
+static inline enum grf_io_power_domain_voltage grf_get_io_power_domain_voltage(enum grf_io_power_domain pd)
+{
+       return (readl_relaxed(RK30_GRF_BASE + GRF_IO_CON4) >> pd) & 1;
+}
+
 #endif