power: regulator: palmas: Add regulator support

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>
This commit is contained in:
Keerthy 2016-09-30 09:20:44 +05:30 committed by Simon Glass
parent 33621d247e
commit 884d88bc8b
3 changed files with 462 additions and 0 deletions

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@ -133,3 +133,11 @@ config REGULATOR_TPS65090
regulators, one for each FET. The standard regulator interface is regulators, one for each FET. The standard regulator interface is
supported, but it is only possible to turn the regulators on or off. supported, but it is only possible to turn the regulators on or off.
There is no voltage/current control. There is no voltage/current control.
config DM_REGULATOR_PALMAS
bool "Enable driver for PALMAS PMIC regulators"
depends on PMIC_PALMAS
---help---
This enables implementation of driver-model regulator uclass
features for REGULATOR PALMAS and the family of PALMAS PMICs.
The driver implements get/set api for: value and enable.

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@ -16,3 +16,4 @@ obj-$(CONFIG_REGULATOR_RK808) += rk808.o
obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o
obj-$(CONFIG_DM_REGULATOR_SANDBOX) += sandbox.o obj-$(CONFIG_DM_REGULATOR_SANDBOX) += sandbox.o
obj-$(CONFIG_REGULATOR_TPS65090) += tps65090_regulator.o obj-$(CONFIG_REGULATOR_TPS65090) += tps65090_regulator.o
obj-$(CONFIG_$(SPL_)DM_REGULATOR_PALMAS) += palmas_regulator.o

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@ -0,0 +1,453 @@
/*
* (C) Copyright 2016
* Texas Instruments Incorporated, <www.ti.com>
*
* Keerthy <j-keerthy@ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <fdtdec.h>
#include <errno.h>
#include <dm.h>
#include <i2c.h>
#include <power/pmic.h>
#include <power/regulator.h>
#include <power/palmas.h>
DECLARE_GLOBAL_DATA_PTR;
#define REGULATOR_ON 0x1
#define REGULATOR_OFF 0x0
#define SMPS_MODE_MASK 0x3
#define SMPS_MODE_SHIFT 0x0
#define LDO_MODE_MASK 0x1
#define LDO_MODE_SHIFT 0x0
static const char palmas_smps_ctrl[][PALMAS_SMPS_NUM] = {
{0x20, 0x24, 0x28, 0x2c, 0x30, 0x34, 0x38, 0x3c},
{0x20, 0x24, 0x28, 0x2c, 0x30, 0x34, 0x38},
{0x20, 0x24, 0x2c, 0x30, 0x38},
};
static const char palmas_smps_volt[][PALMAS_SMPS_NUM] = {
{0x23, 0x27, 0x2b, 0x2f, 0x33, 0x37, 0x3b, 0x3c},
{0x23, 0x27, 0x2b, 0x2f, 0x33, 0x37, 0x3b},
{0x23, 0x27, 0x2f, 0x33, 0x3B}
};
static const char palmas_ldo_ctrl[][PALMAS_LDO_NUM] = {
{0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x62, 0x64},
{0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x62, 0x64},
{0x50, 0x52, 0x54, 0x5e, 0x62}
};
static const char palmas_ldo_volt[][PALMAS_LDO_NUM] = {
{0x51, 0x53, 0x55, 0x57, 0x59, 0x5b, 0x5d, 0x5f, 0x61, 0x63, 0x65},
{0x51, 0x53, 0x55, 0x57, 0x59, 0x5b, 0x5d, 0x5f, 0x61, 0x63, 0x65},
{0x51, 0x53, 0x55, 0x5f, 0x63}
};
static int palmas_smps_enable(struct udevice *dev, int op, bool *enable)
{
int ret;
unsigned int adr;
struct dm_regulator_uclass_platdata *uc_pdata;
uc_pdata = dev_get_uclass_platdata(dev);
adr = uc_pdata->ctrl_reg;
ret = pmic_reg_read(dev->parent, adr);
if (ret < 0)
return ret;
if (op == PMIC_OP_GET) {
ret &= PALMAS_SMPS_STATUS_MASK;
if (ret)
*enable = true;
else
*enable = false;
return 0;
} else if (op == PMIC_OP_SET) {
if (*enable)
ret |= PALMAS_SMPS_MODE_MASK;
else
ret &= ~(PALMAS_SMPS_MODE_MASK);
ret = pmic_reg_write(dev->parent, adr, ret);
if (ret)
return ret;
}
return 0;
}
static int palmas_smps_volt2hex(int uV)
{
if (uV > PALMAS_LDO_VOLT_MAX)
return -EINVAL;
if (uV > 1650000)
return (uV - 1000000) / 20000 + 0x6;
if (uV == 500000)
return 0x6;
else
return 0x6 + ((uV - 500000) / 10000);
}
static int palmas_smps_hex2volt(int hex, bool range)
{
unsigned int uV = 0;
if (hex > PALMAS_SMPS_VOLT_MAX_HEX)
return -EINVAL;
if (hex < 0x7)
uV = 500000;
else
uV = 500000 + (hex - 0x6) * 10000;
if (range)
uV *= 2;
return uV;
}
static int palmas_smps_val(struct udevice *dev, int op, int *uV)
{
unsigned int hex, adr;
int ret;
bool range;
struct dm_regulator_uclass_platdata *uc_pdata;
uc_pdata = dev_get_uclass_platdata(dev);
if (op == PMIC_OP_GET)
*uV = 0;
adr = uc_pdata->volt_reg;
ret = pmic_reg_read(dev->parent, adr);
if (ret < 0)
return ret;
if (op == PMIC_OP_GET) {
if (ret & PALMAS_SMPS_RANGE_MASK)
range = true;
else
range = false;
ret &= PALMAS_SMPS_VOLT_MASK;
ret = palmas_smps_hex2volt(ret, range);
if (ret < 0)
return ret;
*uV = ret;
return 0;
}
hex = palmas_smps_volt2hex(*uV);
if (hex < 0)
return hex;
ret &= ~PALMAS_SMPS_VOLT_MASK;
ret |= hex;
if (*uV > 1650000)
ret |= PALMAS_SMPS_RANGE_MASK;
return pmic_reg_write(dev->parent, adr, ret);
}
static int palmas_ldo_enable(struct udevice *dev, int op, bool *enable)
{
int ret;
unsigned int adr;
struct dm_regulator_uclass_platdata *uc_pdata;
uc_pdata = dev_get_uclass_platdata(dev);
adr = uc_pdata->ctrl_reg;
ret = pmic_reg_read(dev->parent, adr);
if (ret < 0)
return ret;
if (op == PMIC_OP_GET) {
ret &= PALMAS_LDO_STATUS_MASK;
if (ret)
*enable = true;
else
*enable = false;
return 0;
} else if (op == PMIC_OP_SET) {
if (*enable)
ret |= PALMAS_LDO_MODE_MASK;
else
ret &= ~(PALMAS_LDO_MODE_MASK);
ret = pmic_reg_write(dev->parent, adr, ret);
if (ret)
return ret;
}
return 0;
}
static int palmas_ldo_volt2hex(int uV)
{
if (uV > PALMAS_LDO_VOLT_MAX)
return -EINVAL;
return (uV - 850000) / 50000;
}
static int palmas_ldo_hex2volt(int hex)
{
if (hex > PALMAS_LDO_VOLT_MAX_HEX)
return -EINVAL;
if (!hex)
return 0;
return (hex * 50000) + 850000;
}
static int palmas_ldo_val(struct udevice *dev, int op, int *uV)
{
unsigned int hex, adr;
int ret;
struct dm_regulator_uclass_platdata *uc_pdata;
if (op == PMIC_OP_GET)
*uV = 0;
uc_pdata = dev_get_uclass_platdata(dev);
adr = uc_pdata->volt_reg;
ret = pmic_reg_read(dev->parent, adr);
if (ret < 0)
return ret;
if (op == PMIC_OP_GET) {
ret &= PALMAS_LDO_VOLT_MASK;
ret = palmas_ldo_hex2volt(ret);
if (ret < 0)
return ret;
*uV = ret;
return 0;
}
hex = palmas_ldo_volt2hex(*uV);
if (hex < 0)
return hex;
ret &= ~PALMAS_LDO_VOLT_MASK;
ret |= hex;
if (*uV > 1650000)
ret |= 0x80;
return pmic_reg_write(dev->parent, adr, ret);
}
static int palmas_ldo_probe(struct udevice *dev)
{
struct dm_regulator_uclass_platdata *uc_pdata;
struct udevice *parent;
uc_pdata = dev_get_uclass_platdata(dev);
parent = dev_get_parent(dev);
int type = dev_get_driver_data(parent);
uc_pdata->type = REGULATOR_TYPE_LDO;
if (dev->driver_data) {
u8 idx = dev->driver_data - 1;
uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][idx];
uc_pdata->volt_reg = palmas_ldo_volt[type][idx];
} else {
/* check for ldoln and ldousb cases */
if (!strcmp("ldoln", dev->name)) {
uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][9];
uc_pdata->volt_reg = palmas_ldo_volt[type][9];
} else if (!strcmp("ldousb", dev->name)) {
uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][10];
uc_pdata->volt_reg = palmas_ldo_volt[type][10];
}
}
return 0;
}
static int ldo_get_value(struct udevice *dev)
{
int uV;
int ret;
ret = palmas_ldo_val(dev, PMIC_OP_GET, &uV);
if (ret)
return ret;
return uV;
}
static int ldo_set_value(struct udevice *dev, int uV)
{
return palmas_ldo_val(dev, PMIC_OP_SET, &uV);
}
static bool ldo_get_enable(struct udevice *dev)
{
bool enable = false;
int ret;
ret = palmas_ldo_enable(dev, PMIC_OP_GET, &enable);
if (ret)
return ret;
return enable;
}
static int ldo_set_enable(struct udevice *dev, bool enable)
{
return palmas_ldo_enable(dev, PMIC_OP_SET, &enable);
}
static int palmas_smps_probe(struct udevice *dev)
{
struct dm_regulator_uclass_platdata *uc_pdata;
struct udevice *parent;
int idx;
uc_pdata = dev_get_uclass_platdata(dev);
parent = dev_get_parent(dev);
int type = dev_get_driver_data(parent);
uc_pdata->type = REGULATOR_TYPE_BUCK;
switch (type) {
case PALMAS:
case TPS659038:
switch (dev->driver_data) {
case 123:
case 12:
uc_pdata->ctrl_reg = palmas_smps_ctrl[type][0];
uc_pdata->volt_reg = palmas_smps_volt[type][0];
break;
case 3:
uc_pdata->ctrl_reg = palmas_smps_ctrl[type][1];
uc_pdata->volt_reg = palmas_smps_volt[type][1];
break;
case 45:
uc_pdata->ctrl_reg = palmas_smps_ctrl[type][2];
uc_pdata->volt_reg = palmas_smps_volt[type][2];
break;
case 6:
case 7:
case 8:
case 9:
case 10:
idx = dev->driver_data - 4;
uc_pdata->ctrl_reg = palmas_smps_ctrl[type][idx];
uc_pdata->volt_reg = palmas_smps_volt[type][idx];
break;
default:
printf("Wrong ID for regulator\n");
}
break;
case TPS65917:
switch (dev->driver_data) {
case 1:
case 2:
case 3:
case 4:
case 5:
idx = dev->driver_data - 1;
uc_pdata->ctrl_reg = palmas_smps_ctrl[type][idx];
uc_pdata->volt_reg = palmas_smps_volt[type][idx];
break;
default:
printf("Wrong ID for regulator\n");
}
break;
default:
printf("Invalid PMIC ID\n");
}
return 0;
}
static int smps_get_value(struct udevice *dev)
{
int uV;
int ret;
ret = palmas_smps_val(dev, PMIC_OP_GET, &uV);
if (ret)
return ret;
return uV;
}
static int smps_set_value(struct udevice *dev, int uV)
{
return palmas_smps_val(dev, PMIC_OP_SET, &uV);
}
static bool smps_get_enable(struct udevice *dev)
{
bool enable = false;
int ret;
ret = palmas_smps_enable(dev, PMIC_OP_GET, &enable);
if (ret)
return ret;
return enable;
}
static int smps_set_enable(struct udevice *dev, bool enable)
{
return palmas_smps_enable(dev, PMIC_OP_SET, &enable);
}
static const struct dm_regulator_ops palmas_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(palmas_ldo) = {
.name = PALMAS_LDO_DRIVER,
.id = UCLASS_REGULATOR,
.ops = &palmas_ldo_ops,
.probe = palmas_ldo_probe,
};
static const struct dm_regulator_ops palmas_smps_ops = {
.get_value = smps_get_value,
.set_value = smps_set_value,
.get_enable = smps_get_enable,
.set_enable = smps_set_enable,
};
U_BOOT_DRIVER(palmas_smps) = {
.name = PALMAS_SMPS_DRIVER,
.id = UCLASS_REGULATOR,
.ops = &palmas_smps_ops,
.probe = palmas_smps_probe,
};