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u-boot/drivers/power/regulator/rk8xx.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

388 lines
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// SPDX-License-Identifier: GPL-2.0+
/*
* 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>
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <power/rk8xx_pmic.h>
#include <power/pmic.h>
#include <power/regulator.h>
#ifndef CONFIG_SPL_BUILD
#define ENABLE_DRIVER
#endif
/* Field Definitions */
#define RK808_BUCK_VSEL_MASK 0x3f
#define RK808_BUCK4_VSEL_MASK 0xf
#define RK808_LDO_VSEL_MASK 0x1f
#define RK818_BUCK_VSEL_MASK 0x3f
#define RK818_BUCK4_VSEL_MASK 0x1f
#define RK818_LDO_VSEL_MASK 0x1f
#define RK818_LDO3_ON_VSEL_MASK 0xf
#define RK818_BOOST_ON_VSEL_MASK 0xe0
#define RK818_USB_ILIM_SEL_MASK 0x0f
#define RK818_USB_CHG_SD_VSEL_MASK 0x70
struct rk8xx_reg_info {
uint min_uv;
uint step_uv;
s8 vsel_reg;
u8 vsel_mask;
};
static const struct rk8xx_reg_info rk808_buck[] = {
{ 712500, 12500, REG_BUCK1_ON_VSEL, RK808_BUCK_VSEL_MASK, },
{ 712500, 12500, REG_BUCK2_ON_VSEL, RK808_BUCK_VSEL_MASK, },
{ 712500, 12500, -1, RK808_BUCK_VSEL_MASK, },
{ 1800000, 100000, REG_BUCK4_ON_VSEL, RK808_BUCK4_VSEL_MASK, },
};
static const struct rk8xx_reg_info rk818_buck[] = {
{ 712500, 12500, REG_BUCK1_ON_VSEL, RK818_BUCK_VSEL_MASK, },
{ 712500, 12500, REG_BUCK2_ON_VSEL, RK818_BUCK_VSEL_MASK, },
{ 712500, 12500, -1, RK818_BUCK_VSEL_MASK, },
{ 1800000, 100000, REG_BUCK4_ON_VSEL, RK818_BUCK4_VSEL_MASK, },
};
#ifdef ENABLE_DRIVER
static const struct rk8xx_reg_info rk808_ldo[] = {
{ 1800000, 100000, REG_LDO1_ON_VSEL, RK808_LDO_VSEL_MASK, },
{ 1800000, 100000, REG_LDO2_ON_VSEL, RK808_LDO_VSEL_MASK, },
{ 800000, 100000, REG_LDO3_ON_VSEL, RK808_BUCK4_VSEL_MASK, },
{ 1800000, 100000, REG_LDO4_ON_VSEL, RK808_LDO_VSEL_MASK, },
{ 1800000, 100000, REG_LDO5_ON_VSEL, RK808_LDO_VSEL_MASK, },
{ 800000, 100000, REG_LDO6_ON_VSEL, RK808_LDO_VSEL_MASK, },
{ 800000, 100000, REG_LDO7_ON_VSEL, RK808_LDO_VSEL_MASK, },
{ 1800000, 100000, REG_LDO8_ON_VSEL, RK808_LDO_VSEL_MASK, },
};
static const struct rk8xx_reg_info rk818_ldo[] = {
{ 1800000, 100000, REG_LDO1_ON_VSEL, RK818_LDO_VSEL_MASK, },
{ 1800000, 100000, REG_LDO2_ON_VSEL, RK818_LDO_VSEL_MASK, },
{ 800000, 100000, REG_LDO3_ON_VSEL, RK818_LDO3_ON_VSEL_MASK, },
{ 1800000, 100000, REG_LDO4_ON_VSEL, RK818_LDO_VSEL_MASK, },
{ 1800000, 100000, REG_LDO5_ON_VSEL, RK818_LDO_VSEL_MASK, },
{ 800000, 100000, REG_LDO6_ON_VSEL, RK818_LDO_VSEL_MASK, },
{ 800000, 100000, REG_LDO7_ON_VSEL, RK818_LDO_VSEL_MASK, },
{ 1800000, 100000, REG_LDO8_ON_VSEL, RK818_LDO_VSEL_MASK, },
};
#endif
static const u16 rk818_chrg_cur_input_array[] = {
450, 800, 850, 1000, 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000
};
static const uint rk818_chrg_shutdown_vsel_array[] = {
2780000, 2850000, 2920000, 2990000, 3060000, 3130000, 3190000, 3260000
};
static const struct rk8xx_reg_info *get_buck_reg(struct udevice *pmic,
int num)
{
struct rk8xx_priv *priv = dev_get_priv(pmic);
switch (priv->variant) {
case RK818_ID:
return &rk818_buck[num];
default:
return &rk808_buck[num];
}
}
static int _buck_set_value(struct udevice *pmic, int buck, int uvolt)
{
const struct rk8xx_reg_info *info = get_buck_reg(pmic, buck - 1);
int mask = info->vsel_mask;
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, REG_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 const struct rk8xx_reg_info *get_ldo_reg(struct udevice *pmic,
int num)
{
struct rk8xx_priv *priv = dev_get_priv(pmic);
switch (priv->variant) {
case RK818_ID:
return &rk818_ldo[num];
default:
return &rk808_ldo[num];
}
}
static int buck_get_value(struct udevice *dev)
{
int buck = dev->driver_data - 1;
const struct rk8xx_reg_info *info = get_buck_reg(dev->parent, buck);
int mask = info->vsel_mask;
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 int 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 rk8xx_reg_info *info = get_ldo_reg(dev->parent, ldo);
int mask = info->vsel_mask;
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 rk8xx_reg_info *info = get_ldo_reg(dev->parent, ldo);
int mask = info->vsel_mask;
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 int 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 int 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 rk8xx_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 rk8xx_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 rk8xx_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 rk8xx_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 rk8xx_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 rk8xx_switch_ops = {
.get_enable = switch_get_enable,
.set_enable = switch_set_enable,
};
U_BOOT_DRIVER(rk8xx_buck) = {
.name = "rk8xx_buck",
.id = UCLASS_REGULATOR,
.ops = &rk8xx_buck_ops,
.probe = rk8xx_buck_probe,
};
U_BOOT_DRIVER(rk8xx_ldo) = {
.name = "rk8xx_ldo",
.id = UCLASS_REGULATOR,
.ops = &rk8xx_ldo_ops,
.probe = rk8xx_ldo_probe,
};
U_BOOT_DRIVER(rk8xx_switch) = {
.name = "rk8xx_switch",
.id = UCLASS_REGULATOR,
.ops = &rk8xx_switch_ops,
.probe = rk8xx_switch_probe,
};
#endif
int rk8xx_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);
}
int rk818_spl_configure_usb_input_current(struct udevice *pmic, int current_ma)
{
uint i;
for (i = 0; i < ARRAY_SIZE(rk818_chrg_cur_input_array); i++)
if (current_ma <= rk818_chrg_cur_input_array[i])
break;
return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_ILIM_SEL_MASK, i);
}
int rk818_spl_configure_usb_chrg_shutdown(struct udevice *pmic, int uvolt)
{
uint i;
for (i = 0; i < ARRAY_SIZE(rk818_chrg_shutdown_vsel_array); i++)
if (uvolt <= rk818_chrg_shutdown_vsel_array[i])
break;
return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_CHG_SD_VSEL_MASK,
i);
}
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