mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-07 20:03:12 +00:00
99699a7707
i2c is not used that's why header is not needed. Signed-off-by: Michal Simek <michal.simek@amd.com>
196 lines
3.7 KiB
C
196 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2017
|
|
* Texas Instruments Incorporated, <www.ti.com>
|
|
*
|
|
* Keerthy <j-keerthy@ti.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <fdtdec.h>
|
|
#include <errno.h>
|
|
#include <dm.h>
|
|
#include <log.h>
|
|
#include <power/pmic.h>
|
|
#include <power/regulator.h>
|
|
#include <power/lp87565.h>
|
|
|
|
static const char lp87565_buck_ctrl1[LP87565_BUCK_NUM] = {0x2, 0x4, 0x6, 0x8, 0x2, 0x6};
|
|
static const char lp87565_buck_vout[LP87565_BUCK_NUM] = {0xA, 0xC, 0xE, 0x10, 0xA, 0xE };
|
|
|
|
static int lp87565_buck_enable(struct udevice *dev, int op, bool *enable)
|
|
{
|
|
int ret;
|
|
unsigned int adr;
|
|
struct dm_regulator_uclass_plat *uc_pdata;
|
|
|
|
uc_pdata = dev_get_uclass_plat(dev);
|
|
adr = uc_pdata->ctrl_reg;
|
|
|
|
ret = pmic_reg_read(dev->parent, adr);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (op == PMIC_OP_GET) {
|
|
ret &= LP87565_BUCK_MODE_MASK;
|
|
|
|
if (ret)
|
|
*enable = true;
|
|
else
|
|
*enable = false;
|
|
|
|
return 0;
|
|
} else if (op == PMIC_OP_SET) {
|
|
if (*enable)
|
|
ret |= LP87565_BUCK_MODE_MASK;
|
|
else
|
|
ret &= ~LP87565_BUCK_MODE_MASK;
|
|
ret = pmic_reg_write(dev->parent, adr, ret);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lp87565_buck_volt2val(int uV)
|
|
{
|
|
if (uV > LP87565_BUCK_VOLT_MAX)
|
|
return -EINVAL;
|
|
else if (uV > 1400000)
|
|
return (uV - 1420000) / 20000 + 0x9E;
|
|
else if (uV > 730000)
|
|
return (uV - 735000) / 5000 + 0x18;
|
|
else if (uV >= 500000)
|
|
return (uV - 500000) / 10000;
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int lp87565_buck_val2volt(int val)
|
|
{
|
|
if (val > LP87565_BUCK_VOLT_MAX_HEX)
|
|
return -EINVAL;
|
|
else if (val > 0x9D)
|
|
return 1400000 + (val - 0x9D) * 20000;
|
|
else if (val > 0x17)
|
|
return 730000 + (val - 0x17) * 5000;
|
|
else if (val >= 0x0)
|
|
return 500000 + val * 10000;
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int lp87565_buck_val(struct udevice *dev, int op, int *uV)
|
|
{
|
|
unsigned int hex, adr;
|
|
int ret;
|
|
struct dm_regulator_uclass_plat *uc_pdata;
|
|
|
|
uc_pdata = dev_get_uclass_plat(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) {
|
|
ret &= LP87565_BUCK_VOLT_MASK;
|
|
ret = lp87565_buck_val2volt(ret);
|
|
if (ret < 0)
|
|
return ret;
|
|
*uV = ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
hex = lp87565_buck_volt2val(*uV);
|
|
if (hex < 0)
|
|
return hex;
|
|
|
|
ret &= 0x0;
|
|
ret = hex;
|
|
|
|
ret = pmic_reg_write(dev->parent, adr, ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lp87565_buck_probe(struct udevice *dev)
|
|
{
|
|
struct dm_regulator_uclass_plat *uc_pdata;
|
|
int idx;
|
|
|
|
uc_pdata = dev_get_uclass_plat(dev);
|
|
uc_pdata->type = REGULATOR_TYPE_BUCK;
|
|
|
|
idx = dev->driver_data;
|
|
if (idx == 0 || idx == 1 || idx == 2 || idx == 3) {
|
|
debug("Single phase regulator\n");
|
|
} else if (idx == 23) {
|
|
idx = 5;
|
|
} else if (idx == 10) {
|
|
idx = 4;
|
|
} else {
|
|
printf("Wrong ID for regulator\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
uc_pdata->ctrl_reg = lp87565_buck_ctrl1[idx];
|
|
uc_pdata->volt_reg = lp87565_buck_vout[idx];
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int buck_get_value(struct udevice *dev)
|
|
{
|
|
int uV;
|
|
int ret;
|
|
|
|
ret = lp87565_buck_val(dev, PMIC_OP_GET, &uV);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return uV;
|
|
}
|
|
|
|
static int buck_set_value(struct udevice *dev, int uV)
|
|
{
|
|
return lp87565_buck_val(dev, PMIC_OP_SET, &uV);
|
|
}
|
|
|
|
static int buck_get_enable(struct udevice *dev)
|
|
{
|
|
bool enable = false;
|
|
int ret;
|
|
|
|
|
|
ret = lp87565_buck_enable(dev, PMIC_OP_GET, &enable);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return enable;
|
|
}
|
|
|
|
static int buck_set_enable(struct udevice *dev, bool enable)
|
|
{
|
|
return lp87565_buck_enable(dev, PMIC_OP_SET, &enable);
|
|
}
|
|
|
|
static const struct dm_regulator_ops lp87565_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(lp87565_buck) = {
|
|
.name = LP87565_BUCK_DRIVER,
|
|
.id = UCLASS_REGULATOR,
|
|
.ops = &lp87565_buck_ops,
|
|
.probe = lp87565_buck_probe,
|
|
};
|