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/*
* 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>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <power/rk808_pmic.h>
#include <power/pmic.h>
#include <power/regulator.h>
#ifndef CONFIG_SPL_BUILD
#define ENABLE_DRIVER
#endif
struct rk808_reg_info {
uint min_uv;
uint step_uv;
s8 vsel_reg;
u8 vsel_bits;
};
static const struct rk808_reg_info rk808_buck[] = {
{ 712500, 12500, REG_BUCK1_ON_VSEL, 6, },
{ 712500, 12500, REG_BUCK2_ON_VSEL, 6, },
{ 712500, 12500, -1, 6, },
{ 1800000, 100000, REG_BUCK4_ON_VSEL, 4, },
};
static const struct rk808_reg_info rk808_ldo[] = {
{ 1800000, 100000, LDO1_ON_VSEL, 5, },
{ 1800000, 100000, LDO2_ON_VSEL, 5, },
{ 800000, 100000, LDO3_ON_VSEL, 4, },
{ 1800000, 100000, LDO4_ON_VSEL, 5, },
{ 1800000, 100000, LDO5_ON_VSEL, 5, },
{ 800000, 100000, LDO6_ON_VSEL, 5, },
{ 800000, 100000, LDO7_ON_VSEL, 5, },
{ 1800000, 100000, LDO8_ON_VSEL, 5, },
};
static int _buck_set_value(struct udevice *pmic, int buck, int uvolt)
{
const struct rk808_reg_info *info = &rk808_buck[buck - 1];
int mask = (1 << info->vsel_bits) - 1;
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, 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 int buck_get_value(struct udevice *dev)
{
int buck = dev->driver_data - 1;
const struct rk808_reg_info *info = &rk808_buck[buck];
int mask = (1 << info->vsel_bits) - 1;
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 bool 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 rk808_reg_info *info = &rk808_ldo[ldo];
int mask = (1 << info->vsel_bits) - 1;
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 rk808_reg_info *info = &rk808_ldo[ldo];
int mask = (1 << info->vsel_bits) - 1;
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 bool 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 bool 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 rk808_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 rk808_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 rk808_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 rk808_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 rk808_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 rk808_switch_ops = {
.get_enable = switch_get_enable,
.set_enable = switch_set_enable,
};
U_BOOT_DRIVER(rk808_buck) = {
.name = "rk808_buck",
.id = UCLASS_REGULATOR,
.ops = &rk808_buck_ops,
.probe = rk808_buck_probe,
};
U_BOOT_DRIVER(rk808_ldo) = {
.name = "rk808_ldo",
.id = UCLASS_REGULATOR,
.ops = &rk808_ldo_ops,
.probe = rk808_ldo_probe,
};
U_BOOT_DRIVER(rk808_switch) = {
.name = "rk808_switch",
.id = UCLASS_REGULATOR,
.ops = &rk808_switch_ops,
.probe = rk808_switch_probe,
};
#endif
int rk808_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);
}
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