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u-boot/drivers/power/regulator/s5m8767.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

266 lines
6.6 KiB
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015 Google, Inc
*/
#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/s5m8767.h>
static const struct sec_voltage_desc buck_v1 = {
.max = 2225000,
.min = 650000,
.step = 6250,
};
static const struct sec_voltage_desc buck_v2 = {
.max = 1600000,
.min = 600000,
.step = 6250,
};
static const struct sec_voltage_desc buck_v3 = {
.max = 3000000,
.min = 750000,
.step = 12500,
};
static const struct sec_voltage_desc ldo_v1 = {
.max = 3950000,
.min = 800000,
.step = 50000,
};
static const struct sec_voltage_desc ldo_v2 = {
.max = 2375000,
.min = 800000,
.step = 25000,
};
static const struct s5m8767_para buck_param[] = {
/*
* | voltage ----| | enable -| voltage
* regnum addr bpos mask addr on desc
*/
{S5M8767_BUCK1, 0x33, 0x0, 0xff, 0x32, 0x3, &buck_v1},
{S5M8767_BUCK2, 0x35, 0x0, 0xff, 0x34, 0x1, &buck_v2},
{S5M8767_BUCK3, 0x3e, 0x0, 0xff, 0x3d, 0x1, &buck_v2},
{S5M8767_BUCK4, 0x47, 0x0, 0xff, 0x46, 0x1, &buck_v2},
{S5M8767_BUCK5, 0x50, 0x0, 0xff, 0x4f, 0x3, &buck_v1},
{S5M8767_BUCK6, 0x55, 0x0, 0xff, 0x54, 0x3, &buck_v1},
{S5M8767_BUCK7, 0x57, 0x0, 0xff, 0x56, 0x3, &buck_v3},
{S5M8767_BUCK8, 0x59, 0x0, 0xff, 0x58, 0x3, &buck_v3},
{S5M8767_BUCK9, 0x5b, 0x0, 0xff, 0x5a, 0x3, &buck_v3},
};
static const struct s5m8767_para ldo_param[] = {
{S5M8767_LDO1, 0x5c, 0x0, 0x3f, 0x5c, 0x3, &ldo_v2},
{S5M8767_LDO2, 0x5d, 0x0, 0x3f, 0x5d, 0x1, &ldo_v2},
{S5M8767_LDO3, 0x61, 0x0, 0x3f, 0x61, 0x3, &ldo_v1},
{S5M8767_LDO4, 0x62, 0x0, 0x3f, 0x62, 0x3, &ldo_v1},
{S5M8767_LDO5, 0x63, 0x0, 0x3f, 0x63, 0x3, &ldo_v1},
{S5M8767_LDO6, 0x64, 0x0, 0x3f, 0x64, 0x1, &ldo_v2},
{S5M8767_LDO7, 0x65, 0x0, 0x3f, 0x65, 0x1, &ldo_v2},
{S5M8767_LDO8, 0x66, 0x0, 0x3f, 0x66, 0x1, &ldo_v2},
{S5M8767_LDO9, 0x67, 0x0, 0x3f, 0x67, 0x3, &ldo_v1},
{S5M8767_LDO10, 0x68, 0x0, 0x3f, 0x68, 0x1, &ldo_v1},
{S5M8767_LDO11, 0x69, 0x0, 0x3f, 0x69, 0x1, &ldo_v1},
{S5M8767_LDO12, 0x6a, 0x0, 0x3f, 0x6a, 0x1, &ldo_v1},
{S5M8767_LDO13, 0x6b, 0x0, 0x3f, 0x6b, 0x3, &ldo_v1},
{S5M8767_LDO14, 0x6c, 0x0, 0x3f, 0x6c, 0x1, &ldo_v1},
{S5M8767_LDO15, 0x6d, 0x0, 0x3f, 0x6d, 0x1, &ldo_v2},
{S5M8767_LDO16, 0x6e, 0x0, 0x3f, 0x6e, 0x1, &ldo_v1},
{S5M8767_LDO17, 0x6f, 0x0, 0x3f, 0x6f, 0x3, &ldo_v1},
{S5M8767_LDO18, 0x70, 0x0, 0x3f, 0x70, 0x3, &ldo_v1},
{S5M8767_LDO19, 0x71, 0x0, 0x3f, 0x71, 0x3, &ldo_v1},
{S5M8767_LDO20, 0x72, 0x0, 0x3f, 0x72, 0x3, &ldo_v1},
{S5M8767_LDO21, 0x73, 0x0, 0x3f, 0x73, 0x3, &ldo_v1},
{S5M8767_LDO22, 0x74, 0x0, 0x3f, 0x74, 0x3, &ldo_v1},
{S5M8767_LDO23, 0x75, 0x0, 0x3f, 0x75, 0x3, &ldo_v1},
{S5M8767_LDO24, 0x76, 0x0, 0x3f, 0x76, 0x3, &ldo_v1},
{S5M8767_LDO25, 0x77, 0x0, 0x3f, 0x77, 0x3, &ldo_v1},
{S5M8767_LDO26, 0x78, 0x0, 0x3f, 0x78, 0x3, &ldo_v1},
{S5M8767_LDO27, 0x79, 0x0, 0x3f, 0x79, 0x3, &ldo_v1},
{S5M8767_LDO28, 0x7a, 0x0, 0x3f, 0x7a, 0x3, &ldo_v1},
};
enum {
ENABLE_SHIFT = 6,
ENABLE_MASK = 3,
};
static int reg_get_value(struct udevice *dev, const struct s5m8767_para *param)
{
const struct sec_voltage_desc *desc;
int ret, uv, val;
ret = pmic_reg_read(dev->parent, param->vol_addr);
if (ret < 0)
return ret;
desc = param->vol;
val = (ret >> param->vol_bitpos) & param->vol_bitmask;
uv = desc->min + val * desc->step;
return uv;
}
static int reg_set_value(struct udevice *dev, const struct s5m8767_para *param,
int uv)
{
const struct sec_voltage_desc *desc;
int ret, val;
desc = param->vol;
if (uv < desc->min || uv > desc->max)
return -EINVAL;
val = (uv - desc->min) / desc->step;
val = (val & param->vol_bitmask) << param->vol_bitpos;
ret = pmic_clrsetbits(dev->parent, param->vol_addr,
param->vol_bitmask << param->vol_bitpos,
val);
return ret;
}
static int s5m8767_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 ldo_get_value(struct udevice *dev)
{
int ldo = dev->driver_data;
return reg_get_value(dev, &ldo_param[ldo]);
}
static int ldo_set_value(struct udevice *dev, int uv)
{
int ldo = dev->driver_data;
return reg_set_value(dev, &ldo_param[ldo], uv);
}
static int reg_get_enable(struct udevice *dev, const struct s5m8767_para *param)
{
bool enable;
int ret;
ret = pmic_reg_read(dev->parent, param->reg_enaddr);
if (ret < 0)
return ret;
enable = (ret >> ENABLE_SHIFT) & ENABLE_MASK;
return enable;
}
static int reg_set_enable(struct udevice *dev, const struct s5m8767_para *param,
bool enable)
{
int ret;
ret = pmic_reg_read(dev->parent, param->reg_enaddr);
if (ret < 0)
return ret;
ret = pmic_clrsetbits(dev->parent, param->reg_enaddr,
ENABLE_MASK << ENABLE_SHIFT,
enable ? param->reg_enbiton << ENABLE_SHIFT : 0);
return ret;
}
static int ldo_get_enable(struct udevice *dev)
{
int ldo = dev->driver_data;
return reg_get_enable(dev, &ldo_param[ldo]);
}
static int ldo_set_enable(struct udevice *dev, bool enable)
{
int ldo = dev->driver_data;
return reg_set_enable(dev, &ldo_param[ldo], enable);
}
static int s5m8767_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 buck_get_value(struct udevice *dev)
{
int buck = dev->driver_data;
return reg_get_value(dev, &buck_param[buck]);
}
static int buck_set_value(struct udevice *dev, int uv)
{
int buck = dev->driver_data;
return reg_set_value(dev, &buck_param[buck], uv);
}
static int buck_get_enable(struct udevice *dev)
{
int buck = dev->driver_data;
return reg_get_enable(dev, &buck_param[buck]);
}
static int buck_set_enable(struct udevice *dev, bool enable)
{
int buck = dev->driver_data;
return reg_set_enable(dev, &buck_param[buck], enable);
}
static const struct dm_regulator_ops s5m8767_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(s5m8767_ldo) = {
.name = S5M8767_LDO_DRIVER,
.id = UCLASS_REGULATOR,
.ops = &s5m8767_ldo_ops,
.probe = s5m8767_ldo_probe,
};
static const struct dm_regulator_ops s5m8767_buck_ops = {
.get_value = buck_get_value,
.set_value = buck_set_value,
.get_enable = buck_get_enable,
.set_enable = buck_set_enable,
};
U_BOOT_DRIVER(s5m8767_buck) = {
.name = S5M8767_BUCK_DRIVER,
.id = UCLASS_REGULATOR,
.ops = &s5m8767_buck_ops,
.probe = s5m8767_buck_probe,
};
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