From: 黄涛 <huangtao@rock-chips.com>
Date: Tue, 5 Mar 2013 03:54:11 +0000 (+0800)
Subject: rk3066b: grf add io power domain voltage api
X-Git-Tag: firefly_0821_release~7481
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=23de822f963d0bff990494618d67eca8aad9f0bb;p=firefly-linux-kernel-4.4.55.git

rk3066b: grf add io power domain voltage api
---

diff --git a/arch/arm/mach-rk30/include/mach/grf-rk3066b.h b/arch/arm/mach-rk30/include/mach/grf-rk3066b.h
index f796d4db65aa..6df6821eeeab 100644
--- a/arch/arm/mach-rk30/include/mach/grf-rk3066b.h
+++ b/arch/arm/mach-rk30/include/mach/grf-rk3066b.h
@@ -1,6 +1,8 @@
 #ifndef __MACH_GRF_RK3066B_H
 #define __MACH_GRF_RK3066B_H
 
+#include <asm/io.h>
+
 #define GRF_GPIO0L_DIR          0x0000
 #define GRF_GPIO0H_DIR          0x0004
 #define GRF_GPIO1L_DIR          0x0008
@@ -81,4 +83,31 @@
 #define GRF_OS_REG6             0x015c
 #define GRF_OS_REG7             0x0160
 
+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