ARM: tegra: Add IO rail support

Add tegra_io_rail_power_off() and tegra_io_rail_power_on() functions to
put IO rails into or out of deep powerdown mode, respectively.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/include/linux/tegra-powergate.h b/include/linux/tegra-powergate.h
index bccad3cfff87..e6f2ab3014a7 100644
--- a/include/linux/tegra-powergate.h
+++ b/include/linux/tegra-powergate.h
@@ -49,6 +49,38 @@ struct reset_control;
 
 #define TEGRA_POWERGATE_3D0	TEGRA_POWERGATE_3D
 
+#define TEGRA_IO_RAIL_CSIA	0
+#define TEGRA_IO_RAIL_CSIB	1
+#define TEGRA_IO_RAIL_DSI	2
+#define TEGRA_IO_RAIL_MIPI_BIAS	3
+#define TEGRA_IO_RAIL_PEX_BIAS	4
+#define TEGRA_IO_RAIL_PEX_CLK1	5
+#define TEGRA_IO_RAIL_PEX_CLK2	6
+#define TEGRA_IO_RAIL_USB0	9
+#define TEGRA_IO_RAIL_USB1	10
+#define TEGRA_IO_RAIL_USB2	11
+#define TEGRA_IO_RAIL_USB_BIAS	12
+#define TEGRA_IO_RAIL_NAND	13
+#define TEGRA_IO_RAIL_UART	14
+#define TEGRA_IO_RAIL_BB	15
+#define TEGRA_IO_RAIL_AUDIO	17
+#define TEGRA_IO_RAIL_HSIC	19
+#define TEGRA_IO_RAIL_COMP	22
+#define TEGRA_IO_RAIL_HDMI	28
+#define TEGRA_IO_RAIL_PEX_CNTRL	32
+#define TEGRA_IO_RAIL_SDMMC1	33
+#define TEGRA_IO_RAIL_SDMMC3	34
+#define TEGRA_IO_RAIL_SDMMC4	35
+#define TEGRA_IO_RAIL_CAM	36
+#define TEGRA_IO_RAIL_RES	37
+#define TEGRA_IO_RAIL_HV	38
+#define TEGRA_IO_RAIL_DSIB	39
+#define TEGRA_IO_RAIL_DSIC	40
+#define TEGRA_IO_RAIL_DSID	41
+#define TEGRA_IO_RAIL_CSIE	44
+#define TEGRA_IO_RAIL_LVDS	57
+#define TEGRA_IO_RAIL_SYS_DDC	58
+
 #ifdef CONFIG_ARCH_TEGRA
 int tegra_powergate_is_powered(int id);
 int tegra_powergate_power_on(int id);
@@ -58,6 +90,9 @@ int tegra_powergate_remove_clamping(int id);
 /* Must be called with clk disabled, and returns with clk enabled */
 int tegra_powergate_sequence_power_up(int id, struct clk *clk,
 				      struct reset_control *rst);
+
+int tegra_io_rail_power_on(int id);
+int tegra_io_rail_power_off(int id);
 #else
 static inline int tegra_powergate_is_powered(int id)
 {
@@ -84,6 +119,16 @@ static inline int tegra_powergate_sequence_power_up(int id, struct clk *clk,
 {
 	return -ENOSYS;
 }
+
+static inline int tegra_io_rail_power_on(int id)
+{
+	return -ENOSYS;
+}
+
+static inline int tegra_io_rail_power_off(int id)
+{
+	return -ENOSYS;
+}
 #endif
 
 #endif /* _MACH_TEGRA_POWERGATE_H_ */