max8907c regulator for whistler

Original-Change-Id: I03149a2ca8d7fd1724a450612ac37c750167d7cd
Reviewed-on: http://git-master/r/11699
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Tested-by: Thomas Cherry <tcherry@nvidia.com>
Reviewed-by: Jinyoung Park <jinyoungp@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>

Rebase-Id: Ra5c3135f477e1b988f935c6df5c16675f32faaf6

1 files changed, 171 insertions, 1 deletions

diff --git a/arch/arm/mach-tegra/board-whistler-power.c b/arch/arm/mach-tegra/board-whistler-power.c
index 22f57135cac7..46aeef1001c9 100644
--- a/arch/arm/mach-tegra/board-whistler-power.c
+++ b/arch/arm/mach-tegra/board-whistler-power.c
@@ -20,7 +20,8 @@
 #include <linux/platform_device.h>
 #include <linux/resource.h>
 #include <linux/regulator/machine.h>
-#include <linux/mfd/tps6586x.h>
+#include <linux/mfd/max8907c.h>
+#include <linux/regulator/max8907c-regulator.h>
 #include <linux/gpio.h>
 #include <mach/suspend.h>
 #include <linux/io.h>
@@ -33,6 +34,165 @@
 #include "wakeups-t2.h"
 #include "board.h"
 
+#define PMC_CTRL		0x0
+ #define PMC_CTRL_INTR_LOW	(1 << 17)
+
+static struct regulator_consumer_supply max8907c_SD1_supply[] = {
+	REGULATOR_SUPPLY("vdd_cpu", NULL),
+};
+
+static struct regulator_consumer_supply max8907c_SD2_supply[] = {
+	REGULATOR_SUPPLY("vdd_core", NULL),
+};
+
+static struct regulator_consumer_supply max8907c_SD3_supply[] = {
+	REGULATOR_SUPPLY("vddio_sys", NULL),
+};
+
+static struct regulator_consumer_supply max8907c_LDO1_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO2_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO3_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO4_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO5_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO6_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO7_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO8_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO9_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO10_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO11_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO12_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO13_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO14_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO15_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO16_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO17_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO18_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO19_supply[] = {
+};
+
+static struct regulator_consumer_supply max8907c_LDO20_supply[] = {
+};
+
+#define MAX8907C_REGULATOR_DEVICE(_id, _minmv, _maxmv)			\
+static struct regulator_init_data max8907c_##_id##_data = {		\
+	.constraints = {						\
+		.min_uV = (_minmv),					\
+		.max_uV = (_maxmv),					\
+		.valid_modes_mask = (REGULATOR_MODE_NORMAL |		\
+				     REGULATOR_MODE_STANDBY),		\
+		.valid_ops_mask = (REGULATOR_CHANGE_MODE |		\
+				   REGULATOR_CHANGE_STATUS |		\
+				   REGULATOR_CHANGE_VOLTAGE),		\
+	},								\
+	.num_consumer_supplies = ARRAY_SIZE(max8907c_##_id##_supply),	\
+	.consumer_supplies = max8907c_##_id##_supply,			\
+};									\
+static struct platform_device max8907c_##_id##_device = {		\
+	.name	= "max8907c-regulator",					\
+	.id	= MAX8907C_##_id,					\
+	.dev	= {							\
+		.platform_data = &max8907c_##_id##_data,		\
+	},								\
+}
+
+MAX8907C_REGULATOR_DEVICE(SD1, 637500, 1425000);
+MAX8907C_REGULATOR_DEVICE(SD2, 650000, 2225000);
+MAX8907C_REGULATOR_DEVICE(SD3, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO1, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO2, 650000, 2225000);
+MAX8907C_REGULATOR_DEVICE(LDO3, 650000, 2225000);
+MAX8907C_REGULATOR_DEVICE(LDO4, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO5, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO6, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO7, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO8, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO9, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO10, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO11, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO12, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO13, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO14, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO15, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO16, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO17, 650000, 2225000);
+MAX8907C_REGULATOR_DEVICE(LDO18, 650000, 2225000);
+MAX8907C_REGULATOR_DEVICE(LDO19, 750000, 3900000);
+MAX8907C_REGULATOR_DEVICE(LDO20, 750000, 3900000);
+
+static struct platform_device *whistler_max8907c_power_devices[] = {
+	&max8907c_SD1_device,
+	&max8907c_SD2_device,
+	&max8907c_SD3_device,
+	&max8907c_LDO1_device,
+	&max8907c_LDO2_device,
+	&max8907c_LDO3_device,
+	&max8907c_LDO4_device,
+	&max8907c_LDO5_device,
+	&max8907c_LDO6_device,
+	&max8907c_LDO7_device,
+	&max8907c_LDO8_device,
+	&max8907c_LDO9_device,
+	&max8907c_LDO10_device,
+	&max8907c_LDO11_device,
+	&max8907c_LDO12_device,
+	&max8907c_LDO13_device,
+	&max8907c_LDO14_device,
+	&max8907c_LDO15_device,
+	&max8907c_LDO16_device,
+	&max8907c_LDO17_device,
+	&max8907c_LDO18_device,
+	&max8907c_LDO19_device,
+	&max8907c_LDO20_device,
+};
+
+static struct max8907c_platform_data max8907c_pdata = {
+	.num_subdevs = ARRAY_SIZE(whistler_max8907c_power_devices),
+	.subdevs = whistler_max8907c_power_devices,
+};
+
+static struct i2c_board_info __initdata whistler_regulators[] = {
+	{
+		I2C_BOARD_INFO("max8907c", 0x3C),
+		.platform_data	= &max8907c_pdata,
+	},
+};
+
 static struct tegra_suspend_platform_data whistler_suspend_data = {
 	.cpu_timer	= 2000,
 	.cpu_off_timer	= 0,
@@ -50,6 +210,16 @@ static struct tegra_suspend_platform_data whistler_suspend_data = {
 
 int __init whistler_regulator_init(void)
 {
+	void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE);
+	u32 pmc_ctrl;
+
+	/* configure the power management controller to trigger PMU
+	 * interrupts when low */
+	pmc_ctrl = readl(pmc + PMC_CTRL);
+	writel(pmc_ctrl | PMC_CTRL_INTR_LOW, pmc + PMC_CTRL);
+
+	i2c_register_board_info(4, whistler_regulators, 1);
+
 	tegra_init_suspend(&whistler_suspend_data);
 
 	return 0;