rk30:sdk:support pwm set voltage

arch/arm/mach-rk30/board-rk30-sdk.c

@@ -44,6 +44,7 @@
 #include <linux/regulator/machine.h>
 #include <linux/rfkill-rk.h>
 #include <linux/sensor-dev.h>
+#include <linux/regulator/rk29-pwm-regulator.h>
 #if defined(CONFIG_HDMI_RK30)
 	#include "../../../drivers/video/rockchip/hdmi/rk_hdmi.h"
 #endif
@@ -1401,6 +1402,60 @@ static struct platform_device rk30_device_adc_battery = {
 };
 #endif
 
+#if CONFIG_RK30_PWM_REGULATOR
+const static int pwm_voltage_map[] = {
+	1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, 1400000
+};
+
+static struct regulator_consumer_supply pwm_dcdc1_consumers[] = {
+	{
+		.supply = "vdd_core",
+	}
+};
+
+struct regulator_init_data pwm_regulator_init_dcdc[1] =
+{
+	{
+		.constraints = {
+			.name = "PWM_DCDC1",
+			.min_uV = 600000,
+			.max_uV = 1800000,	//0.6-1.8V
+			.apply_uV = true,
+			.valid_ops_mask = REGULATOR_CHANGE_STATUS | REGULATOR_CHANGE_VOLTAGE,
+		},
+		.num_consumer_supplies = ARRAY_SIZE(pwm_dcdc1_consumers),
+		.consumer_supplies = pwm_dcdc1_consumers,
+	},
+};
+
+static struct pwm_platform_data pwm_regulator_info[1] = {
+	{
+		.pwm_id = 3,
+		.pwm_gpio = RK30_PIN0_PD7,
+		.pwm_iomux_name = GPIO0D7_PWM3_NAME,
+		.pwm_iomux_pwm = GPIO0D_PWM3,
+		.pwm_iomux_gpio = GPIO0D_GPIO0D6,
+		.pwm_voltage = 1100000,
+		.suspend_voltage = 1050000,
+		.min_uV = 1000000,
+		.max_uV	= 1400000,
+		.coefficient = 455,	//45.5%
+		.pwm_voltage_map = pwm_voltage_map,
+		.init_data	= &pwm_regulator_init_dcdc[0],
+	},
+};
+
+struct platform_device pwm_regulator_device[1] = {
+	{
+		.name = "pwm-voltage-regulator",
+		.id = 0,
+		.dev		= {
+			.platform_data = &pwm_regulator_info[0],
+		}
+	},
+};
+#endif
+
 #ifdef CONFIG_RK29_VMAC
 #define PHY_PWR_EN_GPIO	RK30_PIN1_PD6
 #include "board-rk30-sdk-vmac.c"