drivers/power/regulator/tps80031_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/tps80031.h>

 static const char tps80031_smps_reg[][TPS80031_SMPS_NUM] = {
 	{   0x54,   0x5a,   0x66,   0x42,   0x48 },
 	{   0x56,   0x5c,   0x68,   0x44,   0x4a },
 	{ BIT(3), BIT(4), BIT(6), BIT(0), BIT(1) },
 };

 static const char tps80031_ldo_reg[][TPS80031_LDO_NUM] = {
 	{ 0x9e, 0x86, 0x8e, 0x8a, 0x9a, 0x92, 0xa6, 0x96, 0xa2 },
 	{ 0x9f, 0x87, 0x8f, 0x8b, 0x9b, 0x93, 0xa7, 0x97, 0xa3 },
 };

 static int tps80031_regulator_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 & REGULATOR_MODE_ON)
 			*enable = true;
 		else
 			*enable = false;

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

 		if (*enable)
 			val |= REGULATOR_MODE_ON;

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

 	return 0;
 }

 static int tps80031_get_enable(struct udevice *dev)
 {
 	bool enable = false;
 	int ret;

 	ret = tps80031_regulator_enable(dev, PMIC_OP_GET, &enable);
 	if (ret)
 		return ret;

 	return enable;
 }

 static int tps80031_set_enable(struct udevice *dev, bool enable)
 {
 	return tps80031_regulator_enable(dev, PMIC_OP_SET, &enable);
 }

 /**
  * tps80031_ldo_volt2hex() - convert voltage in uV into
  *			     applicable to register hex value
  *
  * @uV:		voltage in uV
  *
  * Return: voltage in hex on success, -ve on failure
  */
 static int tps80031_ldo_volt2hex(int uV)
 {
 	if (uV > LDO_VOLT_MAX)
 		return -EINVAL;

 	if (uV < LDO_VOLT_MIN)
 		uV = LDO_VOLT_MIN;

 	return DIV_ROUND_UP(uV - LDO_VOLT_BASE, 102000);
 }

 /**
  * tps80031_ldo_hex2volt() - convert register hex value into
  *			     actual voltage in uV
  *
  * @hex:	hex value of register
  *
  * Return: voltage in uV on success, -ve on failure
  */
 static int tps80031_ldo_hex2volt(int hex)
 {
 	if (hex > LDO_VOLT_MAX_HEX)
 		return -EINVAL;

 	if (hex < LDO_VOLT_MIN_HEX)
 		hex = LDO_VOLT_MIN_HEX;

 	return LDO_VOLT_BASE + hex * 102000;
 }

 static int tps80031_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->volt_reg;
 	int val, hex, ret;

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

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

 		ret = tps80031_ldo_hex2volt(val & LDO_VOLT_MASK);
 		if (ret < 0)
 			return ret;

 		*uV = ret;
 		return 0;
 	}

 	hex = tps80031_ldo_volt2hex(*uV);
 	if (hex < 0)
 		return hex;

 	val &= ~LDO_VOLT_MASK;

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

 static int tps80031_ldo_probe(struct udevice *dev)
 {
 	struct dm_regulator_uclass_plat *uc_pdata =
 					dev_get_uclass_plat(dev);

 	uc_pdata->type = REGULATOR_TYPE_LDO;

 	/* check for ldoln and ldousb cases */
 	if (!strcmp("ldoln", dev->name)) {
 		uc_pdata->ctrl_reg = tps80031_ldo_reg[CTRL][7];
 		uc_pdata->volt_reg = tps80031_ldo_reg[VOLT][7];
 		return 0;
 	}

 	if (!strcmp("ldousb", dev->name)) {
 		uc_pdata->ctrl_reg = tps80031_ldo_reg[CTRL][8];
 		uc_pdata->volt_reg = tps80031_ldo_reg[VOLT][8];
 		return 0;
 	}

 	if (dev->driver_data > 0) {
 		u8 idx = dev->driver_data - 1;

 		uc_pdata->ctrl_reg = tps80031_ldo_reg[CTRL][idx];
 		uc_pdata->volt_reg = tps80031_ldo_reg[VOLT][idx];
 	}

 	return 0;
 }

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

 	ret = tps80031_ldo_val(dev, PMIC_OP_GET, &uV);
 	if (ret)
 		return ret;

 	return uV;
 }

 static int ldo_set_value(struct udevice *dev, int uV)
 {
 	return tps80031_ldo_val(dev, PMIC_OP_SET, &uV);
 }

 static const struct dm_regulator_ops tps80031_ldo_ops = {
 	.get_value  = ldo_get_value,
 	.set_value  = ldo_set_value,
 	.get_enable = tps80031_get_enable,
 	.set_enable = tps80031_set_enable,
 };

 U_BOOT_DRIVER(tps80031_ldo) = {
 	.name = TPS80031_LDO_DRIVER,
 	.id = UCLASS_REGULATOR,
 	.ops = &tps80031_ldo_ops,
 	.probe = tps80031_ldo_probe,
 };

 struct tps80031_smps_priv {
 	int flags;
 };

 /* DCDC voltages for the selector of 0x39 to 0x3F */
 static int tps80031_dcdc_voltages[5] = {
 	1350000, 1500000, 1800000, 1900000, 2100000
 };

 /**
  * tps80031_smps_volt2hex() - convert voltage in uV into
  *			      applicable to register hex value
  *
  * @base:	base voltage in uV
  * @uV:		voltage in uV
  *
  * Return: voltage in hex on success, -ve on failure
  */
 static int tps80031_smps_volt2hex(u32 base, int uV)
 {
 	int i;

 	if (uV < base)
 		return 1;

 	if (uV > SMPS_VOLT_LINEAR) {
 		for (i = 0; i < ARRAY_SIZE(tps80031_dcdc_voltages); i++)
 			if (uV <= tps80031_dcdc_voltages[i])
 				break;

 		return SMPS_VOLT_NLINEAR_HEX + i;
 	}

 	return DIV_ROUND_UP(uV - base, 12500);
 }

 /**
  * tps80031_smps_hex2volt() - convert register hex value into
  *			      actual voltage in uV
  *
  * @base:	base voltage in uV
  * @hex:	hex value of register
  *
  * Return: voltage in uV on success, -ve on failure
  */
 static int tps80031_smps_hex2volt(u32 base, int hex)
 {
 	if (!hex)
 		return 0;

 	/* if reg value exceeds linear scale use table */
 	if (hex > SMPS_VOLT_LINEAR_HEX)
 		return tps80031_dcdc_voltages[hex - SMPS_VOLT_LINEAR_HEX];
 	else
 		return base + hex * 12500;
 }

 static int tps80031_smps_val(struct udevice *dev, int op, int *uV)
 {
 	struct dm_regulator_uclass_plat *uc_pdata =
 					dev_get_uclass_plat(dev);
 	struct tps80031_smps_priv *priv = dev_get_priv(dev);
 	u32 adr = uc_pdata->volt_reg;
 	int base, val, hex, ret;

 	/* If offset flag was set then base voltage is higher */
 	if (priv->flags & TPS80031_OFFSET_FLAG)
 		base = SMPS_VOLT_BASE_OFFSET;
 	else
 		base = SMPS_VOLT_BASE;

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

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

 		ret = tps80031_smps_hex2volt(base, val & SMPS_VOLT_MASK);
 		if (ret < 0)
 			return ret;

 		*uV = ret;
 		return 0;
 	}

 	hex = tps80031_smps_volt2hex(base, *uV);
 	if (hex < 0)
 		return hex;

 	val &= ~SMPS_VOLT_MASK;

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

 static int tps80031_smps_probe(struct udevice *dev)
 {
 	struct dm_regulator_uclass_plat *uc_pdata =
 					dev_get_uclass_plat(dev);
 	struct tps80031_smps_priv *priv = dev_get_priv(dev);
 	int idx = dev->driver_data - 1;
 	int val;

 	uc_pdata->type = REGULATOR_TYPE_BUCK;

 	uc_pdata->ctrl_reg = tps80031_smps_reg[CTRL][idx];
 	uc_pdata->volt_reg = tps80031_smps_reg[VOLT][idx];

 	/* Determine if smps regulator uses higher voltage */
 	val = pmic_reg_read(dev->parent, TPS80031_SMPS_OFFSET);
 	if (val & tps80031_smps_reg[OFFSET][idx])
 		priv->flags |= TPS80031_OFFSET_FLAG;

 	return 0;
 }

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

 	ret = tps80031_smps_val(dev, PMIC_OP_GET, &uV);
 	if (ret)
 		return ret;

 	return uV;
 }

 static int smps_set_value(struct udevice *dev, int uV)
 {
 	return tps80031_smps_val(dev, PMIC_OP_SET, &uV);
 }

 static const struct dm_regulator_ops tps80031_smps_ops = {
 	.get_value  = smps_get_value,
 	.set_value  = smps_set_value,
 	.get_enable = tps80031_get_enable,
 	.set_enable = tps80031_set_enable,
 };

 U_BOOT_DRIVER(tps80031_smps) = {
 	.name = TPS80031_SMPS_DRIVER,
 	.id = UCLASS_REGULATOR,
 	.ops = &tps80031_smps_ops,
 	.probe = tps80031_smps_probe,
 	.priv_auto = sizeof(struct tps80031_smps_priv),
 };
	// 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/tps80031.h>

	static const char tps80031_smps_reg[][TPS80031_SMPS_NUM] = {
	{ 0x54, 0x5a, 0x66, 0x42, 0x48 },
	{ 0x56, 0x5c, 0x68, 0x44, 0x4a },
	{ BIT(3), BIT(4), BIT(6), BIT(0), BIT(1) },
	};

	static const char tps80031_ldo_reg[][TPS80031_LDO_NUM] = {
	{ 0x9e, 0x86, 0x8e, 0x8a, 0x9a, 0x92, 0xa6, 0x96, 0xa2 },
	{ 0x9f, 0x87, 0x8f, 0x8b, 0x9b, 0x93, 0xa7, 0x97, 0xa3 },
	};

	static int tps80031_regulator_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 & REGULATOR_MODE_ON)
	*enable = true;
	else
	*enable = false;

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

	if (*enable)
	val \|= REGULATOR_MODE_ON;

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

	return 0;
	}

	static int tps80031_get_enable(struct udevice *dev)
	{
	bool enable = false;
	int ret;

	ret = tps80031_regulator_enable(dev, PMIC_OP_GET, &enable);
	if (ret)
	return ret;

	return enable;
	}

	static int tps80031_set_enable(struct udevice *dev, bool enable)
	{
	return tps80031_regulator_enable(dev, PMIC_OP_SET, &enable);
	}

	/**
	* tps80031_ldo_volt2hex() - convert voltage in uV into
	* applicable to register hex value
	*
	* @uV: voltage in uV
	*
	* Return: voltage in hex on success, -ve on failure
	*/
	static int tps80031_ldo_volt2hex(int uV)
	{
	if (uV > LDO_VOLT_MAX)
	return -EINVAL;

	if (uV < LDO_VOLT_MIN)
	uV = LDO_VOLT_MIN;

	return DIV_ROUND_UP(uV - LDO_VOLT_BASE, 102000);
	}

	/**
	* tps80031_ldo_hex2volt() - convert register hex value into
	* actual voltage in uV
	*
	* @hex: hex value of register
	*
	* Return: voltage in uV on success, -ve on failure
	*/
	static int tps80031_ldo_hex2volt(int hex)
	{
	if (hex > LDO_VOLT_MAX_HEX)
	return -EINVAL;

	if (hex < LDO_VOLT_MIN_HEX)
	hex = LDO_VOLT_MIN_HEX;

	return LDO_VOLT_BASE + hex * 102000;
	}

	static int tps80031_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->volt_reg;
	int val, hex, ret;

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

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

	ret = tps80031_ldo_hex2volt(val & LDO_VOLT_MASK);
	if (ret < 0)
	return ret;

	*uV = ret;
	return 0;
	}

	hex = tps80031_ldo_volt2hex(*uV);
	if (hex < 0)
	return hex;

	val &= ~LDO_VOLT_MASK;

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

	static int tps80031_ldo_probe(struct udevice *dev)
	{
	struct dm_regulator_uclass_plat *uc_pdata =
	dev_get_uclass_plat(dev);

	uc_pdata->type = REGULATOR_TYPE_LDO;

	/* check for ldoln and ldousb cases */
	if (!strcmp("ldoln", dev->name)) {
	uc_pdata->ctrl_reg = tps80031_ldo_reg[CTRL][7];
	uc_pdata->volt_reg = tps80031_ldo_reg[VOLT][7];
	return 0;
	}

	if (!strcmp("ldousb", dev->name)) {
	uc_pdata->ctrl_reg = tps80031_ldo_reg[CTRL][8];
	uc_pdata->volt_reg = tps80031_ldo_reg[VOLT][8];
	return 0;
	}

	if (dev->driver_data > 0) {
	u8 idx = dev->driver_data - 1;

	uc_pdata->ctrl_reg = tps80031_ldo_reg[CTRL][idx];
	uc_pdata->volt_reg = tps80031_ldo_reg[VOLT][idx];
	}

	return 0;
	}

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

	ret = tps80031_ldo_val(dev, PMIC_OP_GET, &uV);
	if (ret)
	return ret;

	return uV;
	}

	static int ldo_set_value(struct udevice *dev, int uV)
	{
	return tps80031_ldo_val(dev, PMIC_OP_SET, &uV);
	}

	static const struct dm_regulator_ops tps80031_ldo_ops = {
	.get_value = ldo_get_value,
	.set_value = ldo_set_value,
	.get_enable = tps80031_get_enable,
	.set_enable = tps80031_set_enable,
	};

	U_BOOT_DRIVER(tps80031_ldo) = {
	.name = TPS80031_LDO_DRIVER,
	.id = UCLASS_REGULATOR,
	.ops = &tps80031_ldo_ops,
	.probe = tps80031_ldo_probe,
	};

	struct tps80031_smps_priv {
	int flags;
	};

	/* DCDC voltages for the selector of 0x39 to 0x3F */
	static int tps80031_dcdc_voltages[5] = {
	1350000, 1500000, 1800000, 1900000, 2100000
	};

	/**
	* tps80031_smps_volt2hex() - convert voltage in uV into
	* applicable to register hex value
	*
	* @base: base voltage in uV
	* @uV: voltage in uV
	*
	* Return: voltage in hex on success, -ve on failure
	*/
	static int tps80031_smps_volt2hex(u32 base, int uV)
	{
	int i;

	if (uV < base)
	return 1;

	if (uV > SMPS_VOLT_LINEAR) {
	for (i = 0; i < ARRAY_SIZE(tps80031_dcdc_voltages); i++)
	if (uV <= tps80031_dcdc_voltages[i])
	break;

	return SMPS_VOLT_NLINEAR_HEX + i;
	}

	return DIV_ROUND_UP(uV - base, 12500);
	}

	/**
	* tps80031_smps_hex2volt() - convert register hex value into
	* actual voltage in uV
	*
	* @base: base voltage in uV
	* @hex: hex value of register
	*
	* Return: voltage in uV on success, -ve on failure
	*/
	static int tps80031_smps_hex2volt(u32 base, int hex)
	{
	if (!hex)
	return 0;

	/* if reg value exceeds linear scale use table */
	if (hex > SMPS_VOLT_LINEAR_HEX)
	return tps80031_dcdc_voltages[hex - SMPS_VOLT_LINEAR_HEX];
	else
	return base + hex * 12500;
	}

	static int tps80031_smps_val(struct udevice dev, int op, int uV)
	{
	struct dm_regulator_uclass_plat *uc_pdata =
	dev_get_uclass_plat(dev);
	struct tps80031_smps_priv *priv = dev_get_priv(dev);
	u32 adr = uc_pdata->volt_reg;
	int base, val, hex, ret;

	/* If offset flag was set then base voltage is higher */
	if (priv->flags & TPS80031_OFFSET_FLAG)
	base = SMPS_VOLT_BASE_OFFSET;
	else
	base = SMPS_VOLT_BASE;

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

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

	ret = tps80031_smps_hex2volt(base, val & SMPS_VOLT_MASK);
	if (ret < 0)
	return ret;

	*uV = ret;
	return 0;
	}

	hex = tps80031_smps_volt2hex(base, *uV);
	if (hex < 0)
	return hex;

	val &= ~SMPS_VOLT_MASK;

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

	static int tps80031_smps_probe(struct udevice *dev)
	{
	struct dm_regulator_uclass_plat *uc_pdata =
	dev_get_uclass_plat(dev);
	struct tps80031_smps_priv *priv = dev_get_priv(dev);
	int idx = dev->driver_data - 1;
	int val;

	uc_pdata->type = REGULATOR_TYPE_BUCK;

	uc_pdata->ctrl_reg = tps80031_smps_reg[CTRL][idx];
	uc_pdata->volt_reg = tps80031_smps_reg[VOLT][idx];

	/* Determine if smps regulator uses higher voltage */
	val = pmic_reg_read(dev->parent, TPS80031_SMPS_OFFSET);
	if (val & tps80031_smps_reg[OFFSET][idx])
	priv->flags \|= TPS80031_OFFSET_FLAG;

	return 0;
	}

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

	ret = tps80031_smps_val(dev, PMIC_OP_GET, &uV);
	if (ret)
	return ret;

	return uV;
	}

	static int smps_set_value(struct udevice *dev, int uV)
	{
	return tps80031_smps_val(dev, PMIC_OP_SET, &uV);
	}

	static const struct dm_regulator_ops tps80031_smps_ops = {
	.get_value = smps_get_value,
	.set_value = smps_set_value,
	.get_enable = tps80031_get_enable,
	.set_enable = tps80031_set_enable,
	};

	U_BOOT_DRIVER(tps80031_smps) = {
	.name = TPS80031_SMPS_DRIVER,
	.id = UCLASS_REGULATOR,
	.ops = &tps80031_smps_ops,
	.probe = tps80031_smps_probe,
	.priv_auto = sizeof(struct tps80031_smps_priv),
	};