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The driver provides regulator set/get voltage enable/disable functions for palmas family of PMICs. Signed-off-by: Keerthy <j-keerthy@ti.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
454 lines
8.6 KiB
C
454 lines
8.6 KiB
C
/*
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* (C) Copyright 2016
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* Texas Instruments Incorporated, <www.ti.com>
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*
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* Keerthy <j-keerthy@ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <fdtdec.h>
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#include <errno.h>
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#include <dm.h>
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#include <i2c.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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#include <power/palmas.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define REGULATOR_ON 0x1
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#define REGULATOR_OFF 0x0
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#define SMPS_MODE_MASK 0x3
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#define SMPS_MODE_SHIFT 0x0
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#define LDO_MODE_MASK 0x1
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#define LDO_MODE_SHIFT 0x0
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static const char palmas_smps_ctrl[][PALMAS_SMPS_NUM] = {
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{0x20, 0x24, 0x28, 0x2c, 0x30, 0x34, 0x38, 0x3c},
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{0x20, 0x24, 0x28, 0x2c, 0x30, 0x34, 0x38},
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{0x20, 0x24, 0x2c, 0x30, 0x38},
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};
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static const char palmas_smps_volt[][PALMAS_SMPS_NUM] = {
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{0x23, 0x27, 0x2b, 0x2f, 0x33, 0x37, 0x3b, 0x3c},
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{0x23, 0x27, 0x2b, 0x2f, 0x33, 0x37, 0x3b},
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{0x23, 0x27, 0x2f, 0x33, 0x3B}
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};
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static const char palmas_ldo_ctrl[][PALMAS_LDO_NUM] = {
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{0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x62, 0x64},
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{0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x62, 0x64},
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{0x50, 0x52, 0x54, 0x5e, 0x62}
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};
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static const char palmas_ldo_volt[][PALMAS_LDO_NUM] = {
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{0x51, 0x53, 0x55, 0x57, 0x59, 0x5b, 0x5d, 0x5f, 0x61, 0x63, 0x65},
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{0x51, 0x53, 0x55, 0x57, 0x59, 0x5b, 0x5d, 0x5f, 0x61, 0x63, 0x65},
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{0x51, 0x53, 0x55, 0x5f, 0x63}
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};
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static int palmas_smps_enable(struct udevice *dev, int op, bool *enable)
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{
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int ret;
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unsigned int adr;
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struct dm_regulator_uclass_platdata *uc_pdata;
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uc_pdata = dev_get_uclass_platdata(dev);
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adr = uc_pdata->ctrl_reg;
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ret = pmic_reg_read(dev->parent, adr);
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if (ret < 0)
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return ret;
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if (op == PMIC_OP_GET) {
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ret &= PALMAS_SMPS_STATUS_MASK;
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if (ret)
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*enable = true;
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else
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*enable = false;
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return 0;
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} else if (op == PMIC_OP_SET) {
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if (*enable)
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ret |= PALMAS_SMPS_MODE_MASK;
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else
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ret &= ~(PALMAS_SMPS_MODE_MASK);
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ret = pmic_reg_write(dev->parent, adr, ret);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int palmas_smps_volt2hex(int uV)
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{
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if (uV > PALMAS_LDO_VOLT_MAX)
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return -EINVAL;
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if (uV > 1650000)
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return (uV - 1000000) / 20000 + 0x6;
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if (uV == 500000)
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return 0x6;
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else
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return 0x6 + ((uV - 500000) / 10000);
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}
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static int palmas_smps_hex2volt(int hex, bool range)
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{
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unsigned int uV = 0;
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if (hex > PALMAS_SMPS_VOLT_MAX_HEX)
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return -EINVAL;
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if (hex < 0x7)
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uV = 500000;
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else
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uV = 500000 + (hex - 0x6) * 10000;
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if (range)
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uV *= 2;
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return uV;
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}
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static int palmas_smps_val(struct udevice *dev, int op, int *uV)
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{
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unsigned int hex, adr;
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int ret;
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bool range;
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struct dm_regulator_uclass_platdata *uc_pdata;
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uc_pdata = dev_get_uclass_platdata(dev);
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if (op == PMIC_OP_GET)
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*uV = 0;
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adr = uc_pdata->volt_reg;
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ret = pmic_reg_read(dev->parent, adr);
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if (ret < 0)
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return ret;
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if (op == PMIC_OP_GET) {
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if (ret & PALMAS_SMPS_RANGE_MASK)
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range = true;
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else
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range = false;
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ret &= PALMAS_SMPS_VOLT_MASK;
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ret = palmas_smps_hex2volt(ret, range);
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if (ret < 0)
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return ret;
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*uV = ret;
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return 0;
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}
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hex = palmas_smps_volt2hex(*uV);
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if (hex < 0)
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return hex;
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ret &= ~PALMAS_SMPS_VOLT_MASK;
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ret |= hex;
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if (*uV > 1650000)
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ret |= PALMAS_SMPS_RANGE_MASK;
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return pmic_reg_write(dev->parent, adr, ret);
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}
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static int palmas_ldo_enable(struct udevice *dev, int op, bool *enable)
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{
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int ret;
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unsigned int adr;
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struct dm_regulator_uclass_platdata *uc_pdata;
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uc_pdata = dev_get_uclass_platdata(dev);
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adr = uc_pdata->ctrl_reg;
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ret = pmic_reg_read(dev->parent, adr);
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if (ret < 0)
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return ret;
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if (op == PMIC_OP_GET) {
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ret &= PALMAS_LDO_STATUS_MASK;
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if (ret)
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*enable = true;
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else
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*enable = false;
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return 0;
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} else if (op == PMIC_OP_SET) {
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if (*enable)
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ret |= PALMAS_LDO_MODE_MASK;
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else
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ret &= ~(PALMAS_LDO_MODE_MASK);
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ret = pmic_reg_write(dev->parent, adr, ret);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int palmas_ldo_volt2hex(int uV)
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{
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if (uV > PALMAS_LDO_VOLT_MAX)
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return -EINVAL;
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return (uV - 850000) / 50000;
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}
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static int palmas_ldo_hex2volt(int hex)
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{
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if (hex > PALMAS_LDO_VOLT_MAX_HEX)
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return -EINVAL;
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if (!hex)
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return 0;
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return (hex * 50000) + 850000;
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}
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static int palmas_ldo_val(struct udevice *dev, int op, int *uV)
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{
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unsigned int hex, adr;
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int ret;
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struct dm_regulator_uclass_platdata *uc_pdata;
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if (op == PMIC_OP_GET)
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*uV = 0;
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uc_pdata = dev_get_uclass_platdata(dev);
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adr = uc_pdata->volt_reg;
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ret = pmic_reg_read(dev->parent, adr);
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if (ret < 0)
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return ret;
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if (op == PMIC_OP_GET) {
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ret &= PALMAS_LDO_VOLT_MASK;
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ret = palmas_ldo_hex2volt(ret);
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if (ret < 0)
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return ret;
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*uV = ret;
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return 0;
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}
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hex = palmas_ldo_volt2hex(*uV);
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if (hex < 0)
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return hex;
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ret &= ~PALMAS_LDO_VOLT_MASK;
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ret |= hex;
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if (*uV > 1650000)
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ret |= 0x80;
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return pmic_reg_write(dev->parent, adr, ret);
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}
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static int palmas_ldo_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_platdata *uc_pdata;
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struct udevice *parent;
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uc_pdata = dev_get_uclass_platdata(dev);
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parent = dev_get_parent(dev);
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int type = dev_get_driver_data(parent);
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uc_pdata->type = REGULATOR_TYPE_LDO;
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if (dev->driver_data) {
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u8 idx = dev->driver_data - 1;
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uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][idx];
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uc_pdata->volt_reg = palmas_ldo_volt[type][idx];
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} else {
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/* check for ldoln and ldousb cases */
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if (!strcmp("ldoln", dev->name)) {
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uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][9];
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uc_pdata->volt_reg = palmas_ldo_volt[type][9];
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} else if (!strcmp("ldousb", dev->name)) {
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uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][10];
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uc_pdata->volt_reg = palmas_ldo_volt[type][10];
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}
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}
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return 0;
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}
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static int ldo_get_value(struct udevice *dev)
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{
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int uV;
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int ret;
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ret = palmas_ldo_val(dev, PMIC_OP_GET, &uV);
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if (ret)
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return ret;
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return uV;
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}
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static int ldo_set_value(struct udevice *dev, int uV)
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{
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return palmas_ldo_val(dev, PMIC_OP_SET, &uV);
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}
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static bool ldo_get_enable(struct udevice *dev)
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{
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bool enable = false;
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int ret;
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ret = palmas_ldo_enable(dev, PMIC_OP_GET, &enable);
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if (ret)
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return ret;
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return enable;
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}
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static int ldo_set_enable(struct udevice *dev, bool enable)
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{
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return palmas_ldo_enable(dev, PMIC_OP_SET, &enable);
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}
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static int palmas_smps_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_platdata *uc_pdata;
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struct udevice *parent;
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int idx;
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uc_pdata = dev_get_uclass_platdata(dev);
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parent = dev_get_parent(dev);
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int type = dev_get_driver_data(parent);
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uc_pdata->type = REGULATOR_TYPE_BUCK;
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switch (type) {
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case PALMAS:
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case TPS659038:
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switch (dev->driver_data) {
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case 123:
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case 12:
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uc_pdata->ctrl_reg = palmas_smps_ctrl[type][0];
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uc_pdata->volt_reg = palmas_smps_volt[type][0];
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break;
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case 3:
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uc_pdata->ctrl_reg = palmas_smps_ctrl[type][1];
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uc_pdata->volt_reg = palmas_smps_volt[type][1];
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break;
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case 45:
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uc_pdata->ctrl_reg = palmas_smps_ctrl[type][2];
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uc_pdata->volt_reg = palmas_smps_volt[type][2];
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break;
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case 6:
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case 7:
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case 8:
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case 9:
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case 10:
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idx = dev->driver_data - 4;
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uc_pdata->ctrl_reg = palmas_smps_ctrl[type][idx];
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uc_pdata->volt_reg = palmas_smps_volt[type][idx];
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break;
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default:
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printf("Wrong ID for regulator\n");
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}
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break;
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case TPS65917:
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switch (dev->driver_data) {
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case 1:
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case 2:
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case 3:
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case 4:
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case 5:
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idx = dev->driver_data - 1;
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uc_pdata->ctrl_reg = palmas_smps_ctrl[type][idx];
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uc_pdata->volt_reg = palmas_smps_volt[type][idx];
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break;
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default:
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printf("Wrong ID for regulator\n");
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}
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break;
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default:
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printf("Invalid PMIC ID\n");
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}
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return 0;
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}
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static int smps_get_value(struct udevice *dev)
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{
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int uV;
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int ret;
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ret = palmas_smps_val(dev, PMIC_OP_GET, &uV);
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if (ret)
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return ret;
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return uV;
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}
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static int smps_set_value(struct udevice *dev, int uV)
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{
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return palmas_smps_val(dev, PMIC_OP_SET, &uV);
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}
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static bool smps_get_enable(struct udevice *dev)
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{
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bool enable = false;
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int ret;
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ret = palmas_smps_enable(dev, PMIC_OP_GET, &enable);
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if (ret)
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return ret;
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return enable;
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}
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static int smps_set_enable(struct udevice *dev, bool enable)
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{
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return palmas_smps_enable(dev, PMIC_OP_SET, &enable);
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}
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static const struct dm_regulator_ops palmas_ldo_ops = {
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.get_value = ldo_get_value,
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.set_value = ldo_set_value,
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.get_enable = ldo_get_enable,
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.set_enable = ldo_set_enable,
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};
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U_BOOT_DRIVER(palmas_ldo) = {
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.name = PALMAS_LDO_DRIVER,
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.id = UCLASS_REGULATOR,
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.ops = &palmas_ldo_ops,
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.probe = palmas_ldo_probe,
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};
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static const struct dm_regulator_ops palmas_smps_ops = {
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.get_value = smps_get_value,
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.set_value = smps_set_value,
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.get_enable = smps_get_enable,
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.set_enable = smps_set_enable,
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};
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U_BOOT_DRIVER(palmas_smps) = {
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.name = PALMAS_SMPS_DRIVER,
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.id = UCLASS_REGULATOR,
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.ops = &palmas_smps_ops,
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.probe = palmas_smps_probe,
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};
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