drivers/power/regulator/rk8xx.c - u-boot-mtk - Git at Google

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2015 Google, Inc
  * Written by Simon Glass <sjg@chromium.org>
  *
  * Based on Rockchip's drivers/power/pmic/pmic_rk808.c:
  * Copyright (C) 2012 rockchips
  * zyw <zyw@rock-chips.com>
  */

 #include <common.h>
 #include <dm.h>
 #include <errno.h>
 #include <power/rk8xx_pmic.h>
 #include <power/pmic.h>
 #include <power/regulator.h>

 #ifndef CONFIG_SPL_BUILD
 #define ENABLE_DRIVER
 #endif

 /* Field Definitions */
 #define RK808_BUCK_VSEL_MASK	0x3f
 #define RK808_BUCK4_VSEL_MASK	0xf
 #define RK808_LDO_VSEL_MASK	0x1f

 #define RK818_BUCK_VSEL_MASK		0x3f
 #define RK818_BUCK4_VSEL_MASK		0x1f
 #define RK818_LDO_VSEL_MASK		0x1f
 #define RK818_LDO3_ON_VSEL_MASK	0xf
 #define RK818_BOOST_ON_VSEL_MASK	0xe0
 #define RK818_USB_ILIM_SEL_MASK		0x0f
 #define RK818_USB_CHG_SD_VSEL_MASK	0x70


 struct rk8xx_reg_info {
 	uint min_uv;
 	uint step_uv;
 	s8 vsel_reg;
 	u8 vsel_mask;
 };

 static const struct rk8xx_reg_info rk808_buck[] = {
 	{ 712500, 12500, REG_BUCK1_ON_VSEL, RK808_BUCK_VSEL_MASK, },
 	{ 712500, 12500, REG_BUCK2_ON_VSEL, RK808_BUCK_VSEL_MASK, },
 	{ 712500, 12500, -1, RK808_BUCK_VSEL_MASK, },
 	{ 1800000, 100000, REG_BUCK4_ON_VSEL, RK808_BUCK4_VSEL_MASK, },
 };

 static const struct rk8xx_reg_info rk818_buck[] = {
 	{ 712500, 12500, REG_BUCK1_ON_VSEL, RK818_BUCK_VSEL_MASK, },
 	{ 712500, 12500, REG_BUCK2_ON_VSEL, RK818_BUCK_VSEL_MASK, },
 	{ 712500, 12500, -1, RK818_BUCK_VSEL_MASK, },
 	{ 1800000, 100000, REG_BUCK4_ON_VSEL, RK818_BUCK4_VSEL_MASK, },
 };

 #ifdef ENABLE_DRIVER
 static const struct rk8xx_reg_info rk808_ldo[] = {
 	{ 1800000, 100000, REG_LDO1_ON_VSEL, RK808_LDO_VSEL_MASK, },
 	{ 1800000, 100000, REG_LDO2_ON_VSEL, RK808_LDO_VSEL_MASK, },
 	{ 800000, 100000, REG_LDO3_ON_VSEL, RK808_BUCK4_VSEL_MASK, },
 	{ 1800000, 100000, REG_LDO4_ON_VSEL, RK808_LDO_VSEL_MASK, },
 	{ 1800000, 100000, REG_LDO5_ON_VSEL, RK808_LDO_VSEL_MASK, },
 	{ 800000, 100000, REG_LDO6_ON_VSEL, RK808_LDO_VSEL_MASK, },
 	{ 800000, 100000, REG_LDO7_ON_VSEL, RK808_LDO_VSEL_MASK, },
 	{ 1800000, 100000, REG_LDO8_ON_VSEL, RK808_LDO_VSEL_MASK, },
 };

 static const struct rk8xx_reg_info rk818_ldo[] = {
 	{ 1800000, 100000, REG_LDO1_ON_VSEL, RK818_LDO_VSEL_MASK, },
 	{ 1800000, 100000, REG_LDO2_ON_VSEL, RK818_LDO_VSEL_MASK, },
 	{ 800000, 100000, REG_LDO3_ON_VSEL, RK818_LDO3_ON_VSEL_MASK, },
 	{ 1800000, 100000, REG_LDO4_ON_VSEL, RK818_LDO_VSEL_MASK, },
 	{ 1800000, 100000, REG_LDO5_ON_VSEL, RK818_LDO_VSEL_MASK, },
 	{ 800000, 100000, REG_LDO6_ON_VSEL, RK818_LDO_VSEL_MASK, },
 	{ 800000, 100000, REG_LDO7_ON_VSEL, RK818_LDO_VSEL_MASK, },
 	{ 1800000, 100000, REG_LDO8_ON_VSEL, RK818_LDO_VSEL_MASK, },
 };
 #endif

 static const u16 rk818_chrg_cur_input_array[] = {
 	450, 800, 850, 1000, 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000
 };

 static const uint rk818_chrg_shutdown_vsel_array[] = {
 	2780000, 2850000, 2920000, 2990000, 3060000, 3130000, 3190000, 3260000
 };

 static const struct rk8xx_reg_info *get_buck_reg(struct udevice *pmic,
 					     int num)
 {
 	struct rk8xx_priv *priv = dev_get_priv(pmic);
 	switch (priv->variant) {
 	case RK818_ID:
 		return &rk818_buck[num];
 	default:
 		return &rk808_buck[num];
 	}
 }

 static int _buck_set_value(struct udevice *pmic, int buck, int uvolt)
 {
 	const struct rk8xx_reg_info *info = get_buck_reg(pmic, buck - 1);
 	int mask = info->vsel_mask;
 	int val;

 	if (info->vsel_reg == -1)
 		return -ENOSYS;
 	val = (uvolt - info->min_uv) / info->step_uv;
 	debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
 	      val);

 	return pmic_clrsetbits(pmic, info->vsel_reg, mask, val);
 }

 static int _buck_set_enable(struct udevice *pmic, int buck, bool enable)
 {
 	uint mask;
 	int ret;

 	buck--;
 	mask = 1 << buck;
 	if (enable) {
 		ret = pmic_clrsetbits(pmic, REG_DCDC_ILMAX, 0, 3 << (buck * 2));
 		if (ret)
 			return ret;
 		ret = pmic_clrsetbits(pmic, REG_DCDC_UV_ACT, 1 << buck, 0);
 		if (ret)
 			return ret;
 	}

 	return pmic_clrsetbits(pmic, REG_DCDC_EN, mask, enable ? mask : 0);
 }

 #ifdef ENABLE_DRIVER
 static const struct rk8xx_reg_info *get_ldo_reg(struct udevice *pmic,
 					     int num)
 {
 	struct rk8xx_priv *priv = dev_get_priv(pmic);
 	switch (priv->variant) {
 	case RK818_ID:
 		return &rk818_ldo[num];
 	default:
 		return &rk808_ldo[num];
 	}
 }

 static int buck_get_value(struct udevice *dev)
 {
 	int buck = dev->driver_data - 1;
 	const struct rk8xx_reg_info *info = get_buck_reg(dev->parent, buck);
 	int mask = info->vsel_mask;
 	int ret, val;

 	if (info->vsel_reg == -1)
 		return -ENOSYS;
 	ret = pmic_reg_read(dev->parent, info->vsel_reg);
 	if (ret < 0)
 		return ret;
 	val = ret & mask;

 	return info->min_uv + val * info->step_uv;
 }

 static int buck_set_value(struct udevice *dev, int uvolt)
 {
 	int buck = dev->driver_data;

 	return _buck_set_value(dev->parent, buck, uvolt);
 }

 static int buck_set_enable(struct udevice *dev, bool enable)
 {
 	int buck = dev->driver_data;

 	return _buck_set_enable(dev->parent, buck, enable);
 }

 static int buck_get_enable(struct udevice *dev)
 {
 	int buck = dev->driver_data - 1;
 	int ret;
 	uint mask;

 	mask = 1 << buck;

 	ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
 	if (ret < 0)
 		return ret;

 	return ret & mask ? true : false;
 }

 static int ldo_get_value(struct udevice *dev)
 {
 	int ldo = dev->driver_data - 1;
 	const struct rk8xx_reg_info *info = get_ldo_reg(dev->parent, ldo);
 	int mask = info->vsel_mask;
 	int ret, val;

 	if (info->vsel_reg == -1)
 		return -ENOSYS;
 	ret = pmic_reg_read(dev->parent, info->vsel_reg);
 	if (ret < 0)
 		return ret;
 	val = ret & mask;

 	return info->min_uv + val * info->step_uv;
 }

 static int ldo_set_value(struct udevice *dev, int uvolt)
 {
 	int ldo = dev->driver_data - 1;
 	const struct rk8xx_reg_info *info = get_ldo_reg(dev->parent, ldo);
 	int mask = info->vsel_mask;
 	int val;

 	if (info->vsel_reg == -1)
 		return -ENOSYS;
 	val = (uvolt - info->min_uv) / info->step_uv;
 	debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
 	      val);

 	return pmic_clrsetbits(dev->parent, info->vsel_reg, mask, val);
 }

 static int ldo_set_enable(struct udevice *dev, bool enable)
 {
 	int ldo = dev->driver_data - 1;
 	uint mask;

 	mask = 1 << ldo;

 	return pmic_clrsetbits(dev->parent, REG_LDO_EN, mask,
 			       enable ? mask : 0);
 }

 static int ldo_get_enable(struct udevice *dev)
 {
 	int ldo = dev->driver_data - 1;
 	int ret;
 	uint mask;

 	mask = 1 << ldo;

 	ret = pmic_reg_read(dev->parent, REG_LDO_EN);
 	if (ret < 0)
 		return ret;

 	return ret & mask ? true : false;
 }

 static int switch_set_enable(struct udevice *dev, bool enable)
 {
 	int sw = dev->driver_data - 1;
 	uint mask;

 	mask = 1 << (sw + 5);

 	return pmic_clrsetbits(dev->parent, REG_DCDC_EN, mask,
 			       enable ? mask : 0);
 }

 static int switch_get_enable(struct udevice *dev)
 {
 	int sw = dev->driver_data - 1;
 	int ret;
 	uint mask;

 	mask = 1 << (sw + 5);

 	ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
 	if (ret < 0)
 		return ret;

 	return ret & mask ? true : false;
 }

 static int rk8xx_buck_probe(struct udevice *dev)
 {
 	struct dm_regulator_uclass_platdata *uc_pdata;

 	uc_pdata = dev_get_uclass_platdata(dev);

 	uc_pdata->type = REGULATOR_TYPE_BUCK;
 	uc_pdata->mode_count = 0;

 	return 0;
 }

 static int rk8xx_ldo_probe(struct udevice *dev)
 {
 	struct dm_regulator_uclass_platdata *uc_pdata;

 	uc_pdata = dev_get_uclass_platdata(dev);

 	uc_pdata->type = REGULATOR_TYPE_LDO;
 	uc_pdata->mode_count = 0;

 	return 0;
 }

 static int rk8xx_switch_probe(struct udevice *dev)
 {
 	struct dm_regulator_uclass_platdata *uc_pdata;

 	uc_pdata = dev_get_uclass_platdata(dev);

 	uc_pdata->type = REGULATOR_TYPE_FIXED;
 	uc_pdata->mode_count = 0;

 	return 0;
 }

 static const struct dm_regulator_ops rk8xx_buck_ops = {
 	.get_value  = buck_get_value,
 	.set_value  = buck_set_value,
 	.get_enable = buck_get_enable,
 	.set_enable = buck_set_enable,
 };

 static const struct dm_regulator_ops rk8xx_ldo_ops = {
 	.get_value  = ldo_get_value,
 	.set_value  = ldo_set_value,
 	.get_enable = ldo_get_enable,
 	.set_enable = ldo_set_enable,
 };

 static const struct dm_regulator_ops rk8xx_switch_ops = {
 	.get_enable = switch_get_enable,
 	.set_enable = switch_set_enable,
 };

 U_BOOT_DRIVER(rk8xx_buck) = {
 	.name = "rk8xx_buck",
 	.id = UCLASS_REGULATOR,
 	.ops = &rk8xx_buck_ops,
 	.probe = rk8xx_buck_probe,
 };

 U_BOOT_DRIVER(rk8xx_ldo) = {
 	.name = "rk8xx_ldo",
 	.id = UCLASS_REGULATOR,
 	.ops = &rk8xx_ldo_ops,
 	.probe = rk8xx_ldo_probe,
 };

 U_BOOT_DRIVER(rk8xx_switch) = {
 	.name = "rk8xx_switch",
 	.id = UCLASS_REGULATOR,
 	.ops = &rk8xx_switch_ops,
 	.probe = rk8xx_switch_probe,
 };
 #endif

 int rk8xx_spl_configure_buck(struct udevice *pmic, int buck, int uvolt)
 {
 	int ret;

 	ret = _buck_set_value(pmic, buck, uvolt);
 	if (ret)
 		return ret;

 	return _buck_set_enable(pmic, buck, true);
 }

 int rk818_spl_configure_usb_input_current(struct udevice *pmic, int current_ma)
 {
 	uint i;

 	for (i = 0; i < ARRAY_SIZE(rk818_chrg_cur_input_array); i++)
 		if (current_ma <= rk818_chrg_cur_input_array[i])
 			break;

 	return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_ILIM_SEL_MASK, i);
 }

 int rk818_spl_configure_usb_chrg_shutdown(struct udevice *pmic, int uvolt)
 {
 	uint i;

 	for (i = 0; i < ARRAY_SIZE(rk818_chrg_shutdown_vsel_array); i++)
 		if (uvolt <= rk818_chrg_shutdown_vsel_array[i])
 			break;

 	return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_CHG_SD_VSEL_MASK,
 			       i);
 }
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Copyright (C) 2015 Google, Inc
	* Written by Simon Glass <sjg@chromium.org>
	*
	* Based on Rockchip's drivers/power/pmic/pmic_rk808.c:
	* Copyright (C) 2012 rockchips
	* zyw <zyw@rock-chips.com>
	*/

	#include <common.h>
	#include <dm.h>
	#include <errno.h>
	#include <power/rk8xx_pmic.h>
	#include <power/pmic.h>
	#include <power/regulator.h>

	#ifndef CONFIG_SPL_BUILD
	#define ENABLE_DRIVER
	#endif

	/* Field Definitions */
	#define RK808_BUCK_VSEL_MASK 0x3f
	#define RK808_BUCK4_VSEL_MASK 0xf
	#define RK808_LDO_VSEL_MASK 0x1f

	#define RK818_BUCK_VSEL_MASK 0x3f
	#define RK818_BUCK4_VSEL_MASK 0x1f
	#define RK818_LDO_VSEL_MASK 0x1f
	#define RK818_LDO3_ON_VSEL_MASK 0xf
	#define RK818_BOOST_ON_VSEL_MASK 0xe0
	#define RK818_USB_ILIM_SEL_MASK 0x0f
	#define RK818_USB_CHG_SD_VSEL_MASK 0x70


	struct rk8xx_reg_info {
	uint min_uv;
	uint step_uv;
	s8 vsel_reg;
	u8 vsel_mask;
	};

	static const struct rk8xx_reg_info rk808_buck[] = {
	{ 712500, 12500, REG_BUCK1_ON_VSEL, RK808_BUCK_VSEL_MASK, },
	{ 712500, 12500, REG_BUCK2_ON_VSEL, RK808_BUCK_VSEL_MASK, },
	{ 712500, 12500, -1, RK808_BUCK_VSEL_MASK, },
	{ 1800000, 100000, REG_BUCK4_ON_VSEL, RK808_BUCK4_VSEL_MASK, },
	};

	static const struct rk8xx_reg_info rk818_buck[] = {
	{ 712500, 12500, REG_BUCK1_ON_VSEL, RK818_BUCK_VSEL_MASK, },
	{ 712500, 12500, REG_BUCK2_ON_VSEL, RK818_BUCK_VSEL_MASK, },
	{ 712500, 12500, -1, RK818_BUCK_VSEL_MASK, },
	{ 1800000, 100000, REG_BUCK4_ON_VSEL, RK818_BUCK4_VSEL_MASK, },
	};

	#ifdef ENABLE_DRIVER
	static const struct rk8xx_reg_info rk808_ldo[] = {
	{ 1800000, 100000, REG_LDO1_ON_VSEL, RK808_LDO_VSEL_MASK, },
	{ 1800000, 100000, REG_LDO2_ON_VSEL, RK808_LDO_VSEL_MASK, },
	{ 800000, 100000, REG_LDO3_ON_VSEL, RK808_BUCK4_VSEL_MASK, },
	{ 1800000, 100000, REG_LDO4_ON_VSEL, RK808_LDO_VSEL_MASK, },
	{ 1800000, 100000, REG_LDO5_ON_VSEL, RK808_LDO_VSEL_MASK, },
	{ 800000, 100000, REG_LDO6_ON_VSEL, RK808_LDO_VSEL_MASK, },
	{ 800000, 100000, REG_LDO7_ON_VSEL, RK808_LDO_VSEL_MASK, },
	{ 1800000, 100000, REG_LDO8_ON_VSEL, RK808_LDO_VSEL_MASK, },
	};

	static const struct rk8xx_reg_info rk818_ldo[] = {
	{ 1800000, 100000, REG_LDO1_ON_VSEL, RK818_LDO_VSEL_MASK, },
	{ 1800000, 100000, REG_LDO2_ON_VSEL, RK818_LDO_VSEL_MASK, },
	{ 800000, 100000, REG_LDO3_ON_VSEL, RK818_LDO3_ON_VSEL_MASK, },
	{ 1800000, 100000, REG_LDO4_ON_VSEL, RK818_LDO_VSEL_MASK, },
	{ 1800000, 100000, REG_LDO5_ON_VSEL, RK818_LDO_VSEL_MASK, },
	{ 800000, 100000, REG_LDO6_ON_VSEL, RK818_LDO_VSEL_MASK, },
	{ 800000, 100000, REG_LDO7_ON_VSEL, RK818_LDO_VSEL_MASK, },
	{ 1800000, 100000, REG_LDO8_ON_VSEL, RK818_LDO_VSEL_MASK, },
	};
	#endif

	static const u16 rk818_chrg_cur_input_array[] = {
	450, 800, 850, 1000, 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000
	};

	static const uint rk818_chrg_shutdown_vsel_array[] = {
	2780000, 2850000, 2920000, 2990000, 3060000, 3130000, 3190000, 3260000
	};

	static const struct rk8xx_reg_info get_buck_reg(struct udevice pmic,
	int num)
	{
	struct rk8xx_priv *priv = dev_get_priv(pmic);
	switch (priv->variant) {
	case RK818_ID:
	return &rk818_buck[num];
	default:
	return &rk808_buck[num];
	}
	}

	static int _buck_set_value(struct udevice *pmic, int buck, int uvolt)
	{
	const struct rk8xx_reg_info *info = get_buck_reg(pmic, buck - 1);
	int mask = info->vsel_mask;
	int val;

	if (info->vsel_reg == -1)
	return -ENOSYS;
	val = (uvolt - info->min_uv) / info->step_uv;
	debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
	val);

	return pmic_clrsetbits(pmic, info->vsel_reg, mask, val);
	}

	static int _buck_set_enable(struct udevice *pmic, int buck, bool enable)
	{
	uint mask;
	int ret;

	buck--;
	mask = 1 << buck;
	if (enable) {
	ret = pmic_clrsetbits(pmic, REG_DCDC_ILMAX, 0, 3 << (buck * 2));
	if (ret)
	return ret;
	ret = pmic_clrsetbits(pmic, REG_DCDC_UV_ACT, 1 << buck, 0);
	if (ret)
	return ret;
	}

	return pmic_clrsetbits(pmic, REG_DCDC_EN, mask, enable ? mask : 0);
	}

	#ifdef ENABLE_DRIVER
	static const struct rk8xx_reg_info get_ldo_reg(struct udevice pmic,
	int num)
	{
	struct rk8xx_priv *priv = dev_get_priv(pmic);
	switch (priv->variant) {
	case RK818_ID:
	return &rk818_ldo[num];
	default:
	return &rk808_ldo[num];
	}
	}

	static int buck_get_value(struct udevice *dev)
	{
	int buck = dev->driver_data - 1;
	const struct rk8xx_reg_info *info = get_buck_reg(dev->parent, buck);
	int mask = info->vsel_mask;
	int ret, val;

	if (info->vsel_reg == -1)
	return -ENOSYS;
	ret = pmic_reg_read(dev->parent, info->vsel_reg);
	if (ret < 0)
	return ret;
	val = ret & mask;

	return info->min_uv + val * info->step_uv;
	}

	static int buck_set_value(struct udevice *dev, int uvolt)
	{
	int buck = dev->driver_data;

	return _buck_set_value(dev->parent, buck, uvolt);
	}

	static int buck_set_enable(struct udevice *dev, bool enable)
	{
	int buck = dev->driver_data;

	return _buck_set_enable(dev->parent, buck, enable);
	}

	static int buck_get_enable(struct udevice *dev)
	{
	int buck = dev->driver_data - 1;
	int ret;
	uint mask;

	mask = 1 << buck;

	ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
	if (ret < 0)
	return ret;

	return ret & mask ? true : false;
	}

	static int ldo_get_value(struct udevice *dev)
	{
	int ldo = dev->driver_data - 1;
	const struct rk8xx_reg_info *info = get_ldo_reg(dev->parent, ldo);
	int mask = info->vsel_mask;
	int ret, val;

	if (info->vsel_reg == -1)
	return -ENOSYS;
	ret = pmic_reg_read(dev->parent, info->vsel_reg);
	if (ret < 0)
	return ret;
	val = ret & mask;

	return info->min_uv + val * info->step_uv;
	}

	static int ldo_set_value(struct udevice *dev, int uvolt)
	{
	int ldo = dev->driver_data - 1;
	const struct rk8xx_reg_info *info = get_ldo_reg(dev->parent, ldo);
	int mask = info->vsel_mask;
	int val;

	if (info->vsel_reg == -1)
	return -ENOSYS;
	val = (uvolt - info->min_uv) / info->step_uv;
	debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
	val);

	return pmic_clrsetbits(dev->parent, info->vsel_reg, mask, val);
	}

	static int ldo_set_enable(struct udevice *dev, bool enable)
	{
	int ldo = dev->driver_data - 1;
	uint mask;

	mask = 1 << ldo;

	return pmic_clrsetbits(dev->parent, REG_LDO_EN, mask,
	enable ? mask : 0);
	}

	static int ldo_get_enable(struct udevice *dev)
	{
	int ldo = dev->driver_data - 1;
	int ret;
	uint mask;

	mask = 1 << ldo;

	ret = pmic_reg_read(dev->parent, REG_LDO_EN);
	if (ret < 0)
	return ret;

	return ret & mask ? true : false;
	}

	static int switch_set_enable(struct udevice *dev, bool enable)
	{
	int sw = dev->driver_data - 1;
	uint mask;

	mask = 1 << (sw + 5);

	return pmic_clrsetbits(dev->parent, REG_DCDC_EN, mask,
	enable ? mask : 0);
	}

	static int switch_get_enable(struct udevice *dev)
	{
	int sw = dev->driver_data - 1;
	int ret;
	uint mask;

	mask = 1 << (sw + 5);

	ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
	if (ret < 0)
	return ret;

	return ret & mask ? true : false;
	}

	static int rk8xx_buck_probe(struct udevice *dev)
	{
	struct dm_regulator_uclass_platdata *uc_pdata;

	uc_pdata = dev_get_uclass_platdata(dev);

	uc_pdata->type = REGULATOR_TYPE_BUCK;
	uc_pdata->mode_count = 0;

	return 0;
	}

	static int rk8xx_ldo_probe(struct udevice *dev)
	{
	struct dm_regulator_uclass_platdata *uc_pdata;

	uc_pdata = dev_get_uclass_platdata(dev);

	uc_pdata->type = REGULATOR_TYPE_LDO;
	uc_pdata->mode_count = 0;

	return 0;
	}

	static int rk8xx_switch_probe(struct udevice *dev)
	{
	struct dm_regulator_uclass_platdata *uc_pdata;

	uc_pdata = dev_get_uclass_platdata(dev);

	uc_pdata->type = REGULATOR_TYPE_FIXED;
	uc_pdata->mode_count = 0;

	return 0;
	}

	static const struct dm_regulator_ops rk8xx_buck_ops = {
	.get_value = buck_get_value,
	.set_value = buck_set_value,
	.get_enable = buck_get_enable,
	.set_enable = buck_set_enable,
	};

	static const struct dm_regulator_ops rk8xx_ldo_ops = {
	.get_value = ldo_get_value,
	.set_value = ldo_set_value,
	.get_enable = ldo_get_enable,
	.set_enable = ldo_set_enable,
	};

	static const struct dm_regulator_ops rk8xx_switch_ops = {
	.get_enable = switch_get_enable,
	.set_enable = switch_set_enable,
	};

	U_BOOT_DRIVER(rk8xx_buck) = {
	.name = "rk8xx_buck",
	.id = UCLASS_REGULATOR,
	.ops = &rk8xx_buck_ops,
	.probe = rk8xx_buck_probe,
	};

	U_BOOT_DRIVER(rk8xx_ldo) = {
	.name = "rk8xx_ldo",
	.id = UCLASS_REGULATOR,
	.ops = &rk8xx_ldo_ops,
	.probe = rk8xx_ldo_probe,
	};

	U_BOOT_DRIVER(rk8xx_switch) = {
	.name = "rk8xx_switch",
	.id = UCLASS_REGULATOR,
	.ops = &rk8xx_switch_ops,
	.probe = rk8xx_switch_probe,
	};
	#endif

	int rk8xx_spl_configure_buck(struct udevice *pmic, int buck, int uvolt)
	{
	int ret;

	ret = _buck_set_value(pmic, buck, uvolt);
	if (ret)
	return ret;

	return _buck_set_enable(pmic, buck, true);
	}

	int rk818_spl_configure_usb_input_current(struct udevice *pmic, int current_ma)
	{
	uint i;

	for (i = 0; i < ARRAY_SIZE(rk818_chrg_cur_input_array); i++)
	if (current_ma <= rk818_chrg_cur_input_array[i])
	break;

	return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_ILIM_SEL_MASK, i);
	}

	int rk818_spl_configure_usb_chrg_shutdown(struct udevice *pmic, int uvolt)
	{
	uint i;

	for (i = 0; i < ARRAY_SIZE(rk818_chrg_shutdown_vsel_array); i++)
	if (uvolt <= rk818_chrg_shutdown_vsel_array[i])
	break;

	return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_CHG_SD_VSEL_MASK,
	i);
	}