drivers/power/regulator/max77663_regulator.c - filogic/uboot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  *  Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
  */

 #include <dm.h>
 #include <power/pmic.h>
 #include <power/regulator.h>
 #include <power/max77663.h>

 /* fist row is control registers, second is voltage registers */
 static const char max77663_sd_reg[][MAX77663_SD_NUM] = {
 	{ 0x1d, 0x1e, 0x1f, 0x20, 0x21 },
 	{ 0x16, 0x17, 0x18, 0x19, 0x2a },
 };

 static const char max77663_ldo_reg[MAX77663_LDO_NUM] = {
 	0x23, 0x25, 0x27, 0x29, 0x2b, 0x2d, 0x2f, 0x31, 0x33
 };

 static int max77663_sd_enable(struct udevice *dev, int op, bool *enable)
 {
 	struct dm_regulator_uclass_plat *uc_pdata =
 					dev_get_uclass_plat(dev);
 	u32 adr = uc_pdata->ctrl_reg;
 	int val, ret;

 	val = pmic_reg_read(dev->parent, adr);
 	if (val < 0)
 		return val;

 	if (op == PMIC_OP_GET) {
 		if (val & SD_STATUS_MASK)
 			*enable = true;
 		else
 			*enable = false;

 		return 0;
 	} else if (op == PMIC_OP_SET) {
 		val &= ~SD_STATUS_MASK;

 		if (*enable)
 			val |= SD_STATUS_MASK;

 		ret = pmic_reg_write(dev->parent, adr, val);
 		if (ret)
 			return ret;
 	}

 	return 0;
 }

 /**
  * max77663_*_volt2hex() - convert voltage in uV into
  *			   applicable to register hex value
  *
  * @idx:	regulator index
  * @uV:		voltage in uV
  *
  * Return: voltage in hex on success, -ve on failure
  */
 static int max77663_sd_volt2hex(int idx, int uV)
 {
 	switch (idx) {
 	case 0:
 		/* SD0 has max voltage 1.4V */
 		if (uV > SD0_VOLT_MAX)
 			return -EINVAL;
 		break;
 	case 1:
 		/* SD1 has max voltage 1.55V */
 		if (uV > SD1_VOLT_MAX)
 			return -EINVAL;
 		break;
 	default:
 		/* SD2 and SD3 have max voltage 3.79V */
 		if (uV > SD_VOLT_MAX)
 			return -EINVAL;
 		break;
 	};

 	if (uV < SD_VOLT_MIN)
 		uV = SD_VOLT_MIN;

 	return (uV - SD_VOLT_BASE) / 12500;
 }

 /**
  * max77663_*_hex2volt() - convert register hex value into
  *			   actual voltage in uV
  *
  * @idx:	regulator index
  * @hex:	hex value of register
  *
  * Return: voltage in uV on success, -ve on failure
  */
 static int max77663_sd_hex2volt(int idx, int hex)
 {
 	switch (idx) {
 	case 0:
 		/* SD0 has max voltage 1.4V */
 		if (hex > SD0_VOLT_MAX_HEX)
 			return -EINVAL;
 		break;
 	case 1:
 		/* SD1 has max voltage 1.55V */
 		if (hex > SD1_VOLT_MAX_HEX)
 			return -EINVAL;
 		break;
 	default:
 		/* SD2 and SD3 have max voltage 3.79V */
 		if (hex > SD_VOLT_MAX_HEX)
 			return -EINVAL;
 		break;
 	};

 	if (hex < SD_VOLT_MIN_HEX)
 		hex = SD_VOLT_MIN_HEX;

 	return SD_VOLT_BASE + hex * 12500;
 }

 static int max77663_sd_val(struct udevice *dev, int op, int *uV)
 {
 	struct dm_regulator_uclass_plat *uc_pdata =
 					dev_get_uclass_plat(dev);
 	u32 adr = uc_pdata->volt_reg;
 	int idx = dev->driver_data;
 	int hex, ret;

 	if (op == PMIC_OP_GET) {
 		hex = pmic_reg_read(dev->parent, adr);
 		if (hex < 0)
 			return hex;

 		*uV = 0;

 		ret = max77663_sd_hex2volt(idx, hex);
 		if (ret < 0)
 			return ret;
 		*uV = ret;

 		return 0;
 	}

 	/* SD regulators use entire register for voltage */
 	hex = max77663_sd_volt2hex(idx, *uV);
 	if (hex < 0)
 		return hex;

 	return pmic_reg_write(dev->parent, adr, hex);
 }

 static int max77663_sd_probe(struct udevice *dev)
 {
 	struct dm_regulator_uclass_plat *uc_pdata =
 					dev_get_uclass_plat(dev);
 	int idx = dev->driver_data;

 	uc_pdata->type = REGULATOR_TYPE_BUCK;
 	uc_pdata->ctrl_reg = max77663_sd_reg[0][idx];
 	uc_pdata->volt_reg = max77663_sd_reg[1][idx];

 	return 0;
 }

 static int sd_get_value(struct udevice *dev)
 {
 	int uV;
 	int ret;

 	ret = max77663_sd_val(dev, PMIC_OP_GET, &uV);
 	if (ret)
 		return ret;

 	return uV;
 }

 static int sd_set_value(struct udevice *dev, int uV)
 {
 	return max77663_sd_val(dev, PMIC_OP_SET, &uV);
 }

 static int sd_get_enable(struct udevice *dev)
 {
 	bool enable = false;
 	int ret;

 	ret = max77663_sd_enable(dev, PMIC_OP_GET, &enable);
 	if (ret)
 		return ret;

 	return enable;
 }

 static int sd_set_enable(struct udevice *dev, bool enable)
 {
 	return max77663_sd_enable(dev, PMIC_OP_SET, &enable);
 }

 static const struct dm_regulator_ops max77663_sd_ops = {
 	.get_value  = sd_get_value,
 	.set_value  = sd_set_value,
 	.get_enable = sd_get_enable,
 	.set_enable = sd_set_enable,
 };

 U_BOOT_DRIVER(max77663_sd) = {
 	.name = MAX77663_SD_DRIVER,
 	.id = UCLASS_REGULATOR,
 	.ops = &max77663_sd_ops,
 	.probe = max77663_sd_probe,
 };

 static int max77663_ldo_enable(struct udevice *dev, int op, bool *enable)
 {
 	struct dm_regulator_uclass_plat *uc_pdata =
 					dev_get_uclass_plat(dev);
 	u32 adr = uc_pdata->ctrl_reg;
 	int val, ret;

 	val = pmic_reg_read(dev->parent, adr);
 	if (val < 0)
 		return val;

 	if (op == PMIC_OP_GET) {
 		if (val & LDO_STATUS_MASK)
 			*enable = true;
 		else
 			*enable = false;

 		return 0;
 	} else if (op == PMIC_OP_SET) {
 		val &= ~LDO_STATUS_MASK;

 		if (*enable)
 			val |= LDO_STATUS_MASK;

 		ret = pmic_reg_write(dev->parent, adr, val);
 		if (ret)
 			return ret;
 	}

 	return 0;
 }

 static int max77663_ldo_volt2hex(int idx, int uV)
 {
 	switch (idx) {
 	case 0:
 	case 1:
 		if (uV > LDO01_VOLT_MAX)
 			return -EINVAL;

 		return (uV - LDO_VOLT_BASE) / 25000;
 	case 4:
 		if (uV > LDO4_VOLT_MAX)
 			return -EINVAL;

 		return (uV - LDO_VOLT_BASE) / 12500;
 	default:
 		if (uV > LDO_VOLT_MAX)
 			return -EINVAL;

 		return (uV - LDO_VOLT_BASE) / 50000;
 	};
 }

 static int max77663_ldo_hex2volt(int idx, int hex)
 {
 	if (hex > LDO_VOLT_MAX_HEX)
 		return -EINVAL;

 	switch (idx) {
 	case 0:
 	case 1:
 		return (hex * 25000) + LDO_VOLT_BASE;
 	case 4:
 		return (hex * 12500) + LDO_VOLT_BASE;
 	default:
 		return (hex * 50000) + LDO_VOLT_BASE;
 	};
 }

 static int max77663_ldo_val(struct udevice *dev, int op, int *uV)
 {
 	struct dm_regulator_uclass_plat *uc_pdata =
 					dev_get_uclass_plat(dev);
 	u32 adr = uc_pdata->ctrl_reg;
 	int idx = dev->driver_data;
 	int hex, val, ret;

 	val = pmic_reg_read(dev->parent, adr);
 	if (val < 0)
 		return val;

 	if (op == PMIC_OP_GET) {
 		*uV = 0;

 		ret = max77663_ldo_hex2volt(idx, val & LDO_VOLT_MASK);
 		if (ret < 0)
 			return ret;

 		*uV = ret;
 		return 0;
 	}

 	hex = max77663_ldo_volt2hex(idx, *uV);
 	if (hex < 0)
 		return hex;

 	val &= ~LDO_VOLT_MASK;

 	return pmic_reg_write(dev->parent, adr, val | hex);
 }

 static int max77663_ldo_probe(struct udevice *dev)
 {
 	struct dm_regulator_uclass_plat *uc_pdata =
 					dev_get_uclass_plat(dev);
 	int idx = dev->driver_data;

 	uc_pdata->type = REGULATOR_TYPE_LDO;
 	uc_pdata->ctrl_reg = max77663_ldo_reg[idx];

 	return 0;
 }

 static int ldo_get_value(struct udevice *dev)
 {
 	int uV;
 	int ret;

 	ret = max77663_ldo_val(dev, PMIC_OP_GET, &uV);
 	if (ret)
 		return ret;

 	return uV;
 }

 static int ldo_set_value(struct udevice *dev, int uV)
 {
 	return max77663_ldo_val(dev, PMIC_OP_SET, &uV);
 }

 static int ldo_get_enable(struct udevice *dev)
 {
 	bool enable = false;
 	int ret;

 	ret = max77663_ldo_enable(dev, PMIC_OP_GET, &enable);
 	if (ret)
 		return ret;

 	return enable;
 }

 static int ldo_set_enable(struct udevice *dev, bool enable)
 {
 	return max77663_ldo_enable(dev, PMIC_OP_SET, &enable);
 }

 static const struct dm_regulator_ops max77663_ldo_ops = {
 	.get_value  = ldo_get_value,
 	.set_value  = ldo_set_value,
 	.get_enable = ldo_get_enable,
 	.set_enable = ldo_set_enable,
 };

 U_BOOT_DRIVER(max77663_ldo) = {
 	.name = MAX77663_LDO_DRIVER,
 	.id = UCLASS_REGULATOR,
 	.ops = &max77663_ldo_ops,
 	.probe = max77663_ldo_probe,
 };
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
	*/

	#include <dm.h>
	#include <power/pmic.h>
	#include <power/regulator.h>
	#include <power/max77663.h>

	/* fist row is control registers, second is voltage registers */
	static const char max77663_sd_reg[][MAX77663_SD_NUM] = {
	{ 0x1d, 0x1e, 0x1f, 0x20, 0x21 },
	{ 0x16, 0x17, 0x18, 0x19, 0x2a },
	};

	static const char max77663_ldo_reg[MAX77663_LDO_NUM] = {
	0x23, 0x25, 0x27, 0x29, 0x2b, 0x2d, 0x2f, 0x31, 0x33
	};

	static int max77663_sd_enable(struct udevice dev, int op, bool enable)
	{
	struct dm_regulator_uclass_plat *uc_pdata =
	dev_get_uclass_plat(dev);
	u32 adr = uc_pdata->ctrl_reg;
	int val, ret;

	val = pmic_reg_read(dev->parent, adr);
	if (val < 0)
	return val;

	if (op == PMIC_OP_GET) {
	if (val & SD_STATUS_MASK)
	*enable = true;
	else
	*enable = false;

	return 0;
	} else if (op == PMIC_OP_SET) {
	val &= ~SD_STATUS_MASK;

	if (*enable)
	val \|= SD_STATUS_MASK;

	ret = pmic_reg_write(dev->parent, adr, val);
	if (ret)
	return ret;
	}

	return 0;
	}

	/**
	* max77663_*_volt2hex() - convert voltage in uV into
	* applicable to register hex value
	*
	* @idx: regulator index
	* @uV: voltage in uV
	*
	* Return: voltage in hex on success, -ve on failure
	*/
	static int max77663_sd_volt2hex(int idx, int uV)
	{
	switch (idx) {
	case 0:
	/* SD0 has max voltage 1.4V */
	if (uV > SD0_VOLT_MAX)
	return -EINVAL;
	break;
	case 1:
	/* SD1 has max voltage 1.55V */
	if (uV > SD1_VOLT_MAX)
	return -EINVAL;
	break;
	default:
	/* SD2 and SD3 have max voltage 3.79V */
	if (uV > SD_VOLT_MAX)
	return -EINVAL;
	break;
	};

	if (uV < SD_VOLT_MIN)
	uV = SD_VOLT_MIN;

	return (uV - SD_VOLT_BASE) / 12500;
	}

	/**
	* max77663_*_hex2volt() - convert register hex value into
	* actual voltage in uV
	*
	* @idx: regulator index
	* @hex: hex value of register
	*
	* Return: voltage in uV on success, -ve on failure
	*/
	static int max77663_sd_hex2volt(int idx, int hex)
	{
	switch (idx) {
	case 0:
	/* SD0 has max voltage 1.4V */
	if (hex > SD0_VOLT_MAX_HEX)
	return -EINVAL;
	break;
	case 1:
	/* SD1 has max voltage 1.55V */
	if (hex > SD1_VOLT_MAX_HEX)
	return -EINVAL;
	break;
	default:
	/* SD2 and SD3 have max voltage 3.79V */
	if (hex > SD_VOLT_MAX_HEX)
	return -EINVAL;
	break;
	};

	if (hex < SD_VOLT_MIN_HEX)
	hex = SD_VOLT_MIN_HEX;

	return SD_VOLT_BASE + hex * 12500;
	}

	static int max77663_sd_val(struct udevice dev, int op, int uV)
	{
	struct dm_regulator_uclass_plat *uc_pdata =
	dev_get_uclass_plat(dev);
	u32 adr = uc_pdata->volt_reg;
	int idx = dev->driver_data;
	int hex, ret;

	if (op == PMIC_OP_GET) {
	hex = pmic_reg_read(dev->parent, adr);
	if (hex < 0)
	return hex;

	*uV = 0;

	ret = max77663_sd_hex2volt(idx, hex);
	if (ret < 0)
	return ret;
	*uV = ret;

	return 0;
	}

	/* SD regulators use entire register for voltage */
	hex = max77663_sd_volt2hex(idx, *uV);
	if (hex < 0)
	return hex;

	return pmic_reg_write(dev->parent, adr, hex);
	}

	static int max77663_sd_probe(struct udevice *dev)
	{
	struct dm_regulator_uclass_plat *uc_pdata =
	dev_get_uclass_plat(dev);
	int idx = dev->driver_data;

	uc_pdata->type = REGULATOR_TYPE_BUCK;
	uc_pdata->ctrl_reg = max77663_sd_reg[0][idx];
	uc_pdata->volt_reg = max77663_sd_reg[1][idx];

	return 0;
	}

	static int sd_get_value(struct udevice *dev)
	{
	int uV;
	int ret;

	ret = max77663_sd_val(dev, PMIC_OP_GET, &uV);
	if (ret)
	return ret;

	return uV;
	}

	static int sd_set_value(struct udevice *dev, int uV)
	{
	return max77663_sd_val(dev, PMIC_OP_SET, &uV);
	}

	static int sd_get_enable(struct udevice *dev)
	{
	bool enable = false;
	int ret;

	ret = max77663_sd_enable(dev, PMIC_OP_GET, &enable);
	if (ret)
	return ret;

	return enable;
	}

	static int sd_set_enable(struct udevice *dev, bool enable)
	{
	return max77663_sd_enable(dev, PMIC_OP_SET, &enable);
	}

	static const struct dm_regulator_ops max77663_sd_ops = {
	.get_value = sd_get_value,
	.set_value = sd_set_value,
	.get_enable = sd_get_enable,
	.set_enable = sd_set_enable,
	};

	U_BOOT_DRIVER(max77663_sd) = {
	.name = MAX77663_SD_DRIVER,
	.id = UCLASS_REGULATOR,
	.ops = &max77663_sd_ops,
	.probe = max77663_sd_probe,
	};

	static int max77663_ldo_enable(struct udevice dev, int op, bool enable)
	{
	struct dm_regulator_uclass_plat *uc_pdata =
	dev_get_uclass_plat(dev);
	u32 adr = uc_pdata->ctrl_reg;
	int val, ret;

	val = pmic_reg_read(dev->parent, adr);
	if (val < 0)
	return val;

	if (op == PMIC_OP_GET) {
	if (val & LDO_STATUS_MASK)
	*enable = true;
	else
	*enable = false;

	return 0;
	} else if (op == PMIC_OP_SET) {
	val &= ~LDO_STATUS_MASK;

	if (*enable)
	val \|= LDO_STATUS_MASK;

	ret = pmic_reg_write(dev->parent, adr, val);
	if (ret)
	return ret;
	}

	return 0;
	}

	static int max77663_ldo_volt2hex(int idx, int uV)
	{
	switch (idx) {
	case 0:
	case 1:
	if (uV > LDO01_VOLT_MAX)
	return -EINVAL;

	return (uV - LDO_VOLT_BASE) / 25000;
	case 4:
	if (uV > LDO4_VOLT_MAX)
	return -EINVAL;

	return (uV - LDO_VOLT_BASE) / 12500;
	default:
	if (uV > LDO_VOLT_MAX)
	return -EINVAL;

	return (uV - LDO_VOLT_BASE) / 50000;
	};
	}

	static int max77663_ldo_hex2volt(int idx, int hex)
	{
	if (hex > LDO_VOLT_MAX_HEX)
	return -EINVAL;

	switch (idx) {
	case 0:
	case 1:
	return (hex * 25000) + LDO_VOLT_BASE;
	case 4:
	return (hex * 12500) + LDO_VOLT_BASE;
	default:
	return (hex * 50000) + LDO_VOLT_BASE;
	};
	}

	static int max77663_ldo_val(struct udevice dev, int op, int uV)
	{
	struct dm_regulator_uclass_plat *uc_pdata =
	dev_get_uclass_plat(dev);
	u32 adr = uc_pdata->ctrl_reg;
	int idx = dev->driver_data;
	int hex, val, ret;

	val = pmic_reg_read(dev->parent, adr);
	if (val < 0)
	return val;

	if (op == PMIC_OP_GET) {
	*uV = 0;

	ret = max77663_ldo_hex2volt(idx, val & LDO_VOLT_MASK);
	if (ret < 0)
	return ret;

	*uV = ret;
	return 0;
	}

	hex = max77663_ldo_volt2hex(idx, *uV);
	if (hex < 0)
	return hex;

	val &= ~LDO_VOLT_MASK;

	return pmic_reg_write(dev->parent, adr, val \| hex);
	}

	static int max77663_ldo_probe(struct udevice *dev)
	{
	struct dm_regulator_uclass_plat *uc_pdata =
	dev_get_uclass_plat(dev);
	int idx = dev->driver_data;

	uc_pdata->type = REGULATOR_TYPE_LDO;
	uc_pdata->ctrl_reg = max77663_ldo_reg[idx];

	return 0;
	}

	static int ldo_get_value(struct udevice *dev)
	{
	int uV;
	int ret;

	ret = max77663_ldo_val(dev, PMIC_OP_GET, &uV);
	if (ret)
	return ret;

	return uV;
	}

	static int ldo_set_value(struct udevice *dev, int uV)
	{
	return max77663_ldo_val(dev, PMIC_OP_SET, &uV);
	}

	static int ldo_get_enable(struct udevice *dev)
	{
	bool enable = false;
	int ret;

	ret = max77663_ldo_enable(dev, PMIC_OP_GET, &enable);
	if (ret)
	return ret;

	return enable;
	}

	static int ldo_set_enable(struct udevice *dev, bool enable)
	{
	return max77663_ldo_enable(dev, PMIC_OP_SET, &enable);
	}

	static const struct dm_regulator_ops max77663_ldo_ops = {
	.get_value = ldo_get_value,
	.set_value = ldo_set_value,
	.get_enable = ldo_get_enable,
	.set_enable = ldo_set_enable,
	};

	U_BOOT_DRIVER(max77663_ldo) = {
	.name = MAX77663_LDO_DRIVER,
	.id = UCLASS_REGULATOR,
	.ops = &max77663_ldo_ops,
	.probe = max77663_ldo_probe,
	};