mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 08:36:43 +07:00
4f3fb28735
Replace GPL v2.0+ license statements with SPDX license identifiers. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
416 lines
11 KiB
C
416 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
//
|
|
// Copyright (c) 2013 Samsung Electronics Co., Ltd
|
|
// http://www.samsung.com
|
|
|
|
#include <linux/bug.h>
|
|
#include <linux/err.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regulator/driver.h>
|
|
#include <linux/regulator/machine.h>
|
|
#include <linux/regulator/of_regulator.h>
|
|
#include <linux/mfd/samsung/core.h>
|
|
#include <linux/mfd/samsung/s2mpa01.h>
|
|
|
|
#define S2MPA01_REGULATOR_CNT ARRAY_SIZE(regulators)
|
|
|
|
struct s2mpa01_info {
|
|
struct of_regulator_match rdata[S2MPA01_REGULATOR_MAX];
|
|
int ramp_delay24;
|
|
int ramp_delay3;
|
|
int ramp_delay5;
|
|
int ramp_delay16;
|
|
int ramp_delay7;
|
|
int ramp_delay8910;
|
|
};
|
|
|
|
static int get_ramp_delay(int ramp_delay)
|
|
{
|
|
unsigned char cnt = 0;
|
|
|
|
ramp_delay /= 6250;
|
|
|
|
while (true) {
|
|
ramp_delay = ramp_delay >> 1;
|
|
if (ramp_delay == 0)
|
|
break;
|
|
cnt++;
|
|
}
|
|
|
|
if (cnt > 3)
|
|
cnt = 3;
|
|
|
|
return cnt;
|
|
}
|
|
|
|
static int s2mpa01_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
|
|
unsigned int old_selector,
|
|
unsigned int new_selector)
|
|
{
|
|
struct s2mpa01_info *s2mpa01 = rdev_get_drvdata(rdev);
|
|
unsigned int ramp_delay = 0;
|
|
int old_volt, new_volt;
|
|
|
|
switch (rdev_get_id(rdev)) {
|
|
case S2MPA01_BUCK2:
|
|
case S2MPA01_BUCK4:
|
|
ramp_delay = s2mpa01->ramp_delay24;
|
|
break;
|
|
case S2MPA01_BUCK3:
|
|
ramp_delay = s2mpa01->ramp_delay3;
|
|
break;
|
|
case S2MPA01_BUCK5:
|
|
ramp_delay = s2mpa01->ramp_delay5;
|
|
break;
|
|
case S2MPA01_BUCK1:
|
|
case S2MPA01_BUCK6:
|
|
ramp_delay = s2mpa01->ramp_delay16;
|
|
break;
|
|
case S2MPA01_BUCK7:
|
|
ramp_delay = s2mpa01->ramp_delay7;
|
|
break;
|
|
case S2MPA01_BUCK8:
|
|
case S2MPA01_BUCK9:
|
|
case S2MPA01_BUCK10:
|
|
ramp_delay = s2mpa01->ramp_delay8910;
|
|
break;
|
|
}
|
|
|
|
if (ramp_delay == 0)
|
|
ramp_delay = rdev->desc->ramp_delay;
|
|
|
|
old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
|
|
new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);
|
|
|
|
return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
|
|
}
|
|
|
|
static int s2mpa01_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
|
|
{
|
|
struct s2mpa01_info *s2mpa01 = rdev_get_drvdata(rdev);
|
|
unsigned int ramp_val, ramp_shift, ramp_reg = S2MPA01_REG_RAMP2;
|
|
unsigned int ramp_enable = 1, enable_shift = 0;
|
|
int ret;
|
|
|
|
switch (rdev_get_id(rdev)) {
|
|
case S2MPA01_BUCK1:
|
|
enable_shift = S2MPA01_BUCK1_RAMP_EN_SHIFT;
|
|
if (!ramp_delay) {
|
|
ramp_enable = 0;
|
|
break;
|
|
}
|
|
|
|
if (ramp_delay > s2mpa01->ramp_delay16)
|
|
s2mpa01->ramp_delay16 = ramp_delay;
|
|
else
|
|
ramp_delay = s2mpa01->ramp_delay16;
|
|
|
|
ramp_shift = S2MPA01_BUCK16_RAMP_SHIFT;
|
|
break;
|
|
case S2MPA01_BUCK2:
|
|
enable_shift = S2MPA01_BUCK2_RAMP_EN_SHIFT;
|
|
if (!ramp_delay) {
|
|
ramp_enable = 0;
|
|
break;
|
|
}
|
|
|
|
if (ramp_delay > s2mpa01->ramp_delay24)
|
|
s2mpa01->ramp_delay24 = ramp_delay;
|
|
else
|
|
ramp_delay = s2mpa01->ramp_delay24;
|
|
|
|
ramp_shift = S2MPA01_BUCK24_RAMP_SHIFT;
|
|
ramp_reg = S2MPA01_REG_RAMP1;
|
|
break;
|
|
case S2MPA01_BUCK3:
|
|
enable_shift = S2MPA01_BUCK3_RAMP_EN_SHIFT;
|
|
if (!ramp_delay) {
|
|
ramp_enable = 0;
|
|
break;
|
|
}
|
|
|
|
s2mpa01->ramp_delay3 = ramp_delay;
|
|
ramp_shift = S2MPA01_BUCK3_RAMP_SHIFT;
|
|
ramp_reg = S2MPA01_REG_RAMP1;
|
|
break;
|
|
case S2MPA01_BUCK4:
|
|
enable_shift = S2MPA01_BUCK4_RAMP_EN_SHIFT;
|
|
if (!ramp_delay) {
|
|
ramp_enable = 0;
|
|
break;
|
|
}
|
|
|
|
if (ramp_delay > s2mpa01->ramp_delay24)
|
|
s2mpa01->ramp_delay24 = ramp_delay;
|
|
else
|
|
ramp_delay = s2mpa01->ramp_delay24;
|
|
|
|
ramp_shift = S2MPA01_BUCK24_RAMP_SHIFT;
|
|
ramp_reg = S2MPA01_REG_RAMP1;
|
|
break;
|
|
case S2MPA01_BUCK5:
|
|
s2mpa01->ramp_delay5 = ramp_delay;
|
|
ramp_shift = S2MPA01_BUCK5_RAMP_SHIFT;
|
|
break;
|
|
case S2MPA01_BUCK6:
|
|
if (ramp_delay > s2mpa01->ramp_delay16)
|
|
s2mpa01->ramp_delay16 = ramp_delay;
|
|
else
|
|
ramp_delay = s2mpa01->ramp_delay16;
|
|
|
|
ramp_shift = S2MPA01_BUCK16_RAMP_SHIFT;
|
|
break;
|
|
case S2MPA01_BUCK7:
|
|
s2mpa01->ramp_delay7 = ramp_delay;
|
|
ramp_shift = S2MPA01_BUCK7_RAMP_SHIFT;
|
|
break;
|
|
case S2MPA01_BUCK8:
|
|
case S2MPA01_BUCK9:
|
|
case S2MPA01_BUCK10:
|
|
if (ramp_delay > s2mpa01->ramp_delay8910)
|
|
s2mpa01->ramp_delay8910 = ramp_delay;
|
|
else
|
|
ramp_delay = s2mpa01->ramp_delay8910;
|
|
|
|
ramp_shift = S2MPA01_BUCK8910_RAMP_SHIFT;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
if (!ramp_enable)
|
|
goto ramp_disable;
|
|
|
|
/* Ramp delay can be enabled/disabled only for buck[1234] */
|
|
if (rdev_get_id(rdev) >= S2MPA01_BUCK1 &&
|
|
rdev_get_id(rdev) <= S2MPA01_BUCK4) {
|
|
ret = regmap_update_bits(rdev->regmap, S2MPA01_REG_RAMP1,
|
|
1 << enable_shift, 1 << enable_shift);
|
|
if (ret) {
|
|
dev_err(&rdev->dev, "failed to enable ramp rate\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ramp_val = get_ramp_delay(ramp_delay);
|
|
|
|
return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
|
|
ramp_val << ramp_shift);
|
|
|
|
ramp_disable:
|
|
return regmap_update_bits(rdev->regmap, S2MPA01_REG_RAMP1,
|
|
1 << enable_shift, 0);
|
|
}
|
|
|
|
static const struct regulator_ops s2mpa01_ldo_ops = {
|
|
.list_voltage = regulator_list_voltage_linear,
|
|
.map_voltage = regulator_map_voltage_linear,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.set_voltage_time_sel = regulator_set_voltage_time_sel,
|
|
};
|
|
|
|
static const struct regulator_ops s2mpa01_buck_ops = {
|
|
.list_voltage = regulator_list_voltage_linear,
|
|
.map_voltage = regulator_map_voltage_linear,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.set_voltage_time_sel = s2mpa01_regulator_set_voltage_time_sel,
|
|
.set_ramp_delay = s2mpa01_set_ramp_delay,
|
|
};
|
|
|
|
#define regulator_desc_ldo(num, step) { \
|
|
.name = "LDO"#num, \
|
|
.id = S2MPA01_LDO##num, \
|
|
.ops = &s2mpa01_ldo_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
.min_uV = MIN_800_MV, \
|
|
.uV_step = step, \
|
|
.n_voltages = S2MPA01_LDO_N_VOLTAGES, \
|
|
.vsel_reg = S2MPA01_REG_L1CTRL + num - 1, \
|
|
.vsel_mask = S2MPA01_LDO_VSEL_MASK, \
|
|
.enable_reg = S2MPA01_REG_L1CTRL + num - 1, \
|
|
.enable_mask = S2MPA01_ENABLE_MASK \
|
|
}
|
|
|
|
#define regulator_desc_buck1_4(num) { \
|
|
.name = "BUCK"#num, \
|
|
.id = S2MPA01_BUCK##num, \
|
|
.ops = &s2mpa01_buck_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
.min_uV = MIN_600_MV, \
|
|
.uV_step = STEP_6_25_MV, \
|
|
.n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
|
|
.ramp_delay = S2MPA01_RAMP_DELAY, \
|
|
.vsel_reg = S2MPA01_REG_B1CTRL2 + (num - 1) * 2, \
|
|
.vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
|
|
.enable_reg = S2MPA01_REG_B1CTRL1 + (num - 1) * 2, \
|
|
.enable_mask = S2MPA01_ENABLE_MASK \
|
|
}
|
|
|
|
#define regulator_desc_buck5 { \
|
|
.name = "BUCK5", \
|
|
.id = S2MPA01_BUCK5, \
|
|
.ops = &s2mpa01_buck_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
.min_uV = MIN_800_MV, \
|
|
.uV_step = STEP_6_25_MV, \
|
|
.n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
|
|
.ramp_delay = S2MPA01_RAMP_DELAY, \
|
|
.vsel_reg = S2MPA01_REG_B5CTRL2, \
|
|
.vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
|
|
.enable_reg = S2MPA01_REG_B5CTRL1, \
|
|
.enable_mask = S2MPA01_ENABLE_MASK \
|
|
}
|
|
|
|
#define regulator_desc_buck6_10(num, min, step) { \
|
|
.name = "BUCK"#num, \
|
|
.id = S2MPA01_BUCK##num, \
|
|
.ops = &s2mpa01_buck_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
.min_uV = min, \
|
|
.uV_step = step, \
|
|
.n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
|
|
.ramp_delay = S2MPA01_RAMP_DELAY, \
|
|
.vsel_reg = S2MPA01_REG_B6CTRL2 + (num - 6) * 2, \
|
|
.vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
|
|
.enable_reg = S2MPA01_REG_B6CTRL1 + (num - 6) * 2, \
|
|
.enable_mask = S2MPA01_ENABLE_MASK \
|
|
}
|
|
|
|
static const struct regulator_desc regulators[] = {
|
|
regulator_desc_ldo(1, STEP_25_MV),
|
|
regulator_desc_ldo(2, STEP_50_MV),
|
|
regulator_desc_ldo(3, STEP_50_MV),
|
|
regulator_desc_ldo(4, STEP_50_MV),
|
|
regulator_desc_ldo(5, STEP_50_MV),
|
|
regulator_desc_ldo(6, STEP_25_MV),
|
|
regulator_desc_ldo(7, STEP_50_MV),
|
|
regulator_desc_ldo(8, STEP_50_MV),
|
|
regulator_desc_ldo(9, STEP_50_MV),
|
|
regulator_desc_ldo(10, STEP_50_MV),
|
|
regulator_desc_ldo(11, STEP_25_MV),
|
|
regulator_desc_ldo(12, STEP_50_MV),
|
|
regulator_desc_ldo(13, STEP_50_MV),
|
|
regulator_desc_ldo(14, STEP_50_MV),
|
|
regulator_desc_ldo(15, STEP_50_MV),
|
|
regulator_desc_ldo(16, STEP_50_MV),
|
|
regulator_desc_ldo(17, STEP_50_MV),
|
|
regulator_desc_ldo(18, STEP_50_MV),
|
|
regulator_desc_ldo(19, STEP_50_MV),
|
|
regulator_desc_ldo(20, STEP_50_MV),
|
|
regulator_desc_ldo(21, STEP_50_MV),
|
|
regulator_desc_ldo(22, STEP_25_MV),
|
|
regulator_desc_ldo(23, STEP_25_MV),
|
|
regulator_desc_ldo(24, STEP_50_MV),
|
|
regulator_desc_ldo(25, STEP_50_MV),
|
|
regulator_desc_ldo(26, STEP_50_MV),
|
|
regulator_desc_buck1_4(1),
|
|
regulator_desc_buck1_4(2),
|
|
regulator_desc_buck1_4(3),
|
|
regulator_desc_buck1_4(4),
|
|
regulator_desc_buck5,
|
|
regulator_desc_buck6_10(6, MIN_600_MV, STEP_6_25_MV),
|
|
regulator_desc_buck6_10(7, MIN_600_MV, STEP_6_25_MV),
|
|
regulator_desc_buck6_10(8, MIN_800_MV, STEP_12_5_MV),
|
|
regulator_desc_buck6_10(9, MIN_1500_MV, STEP_12_5_MV),
|
|
regulator_desc_buck6_10(10, MIN_1000_MV, STEP_12_5_MV),
|
|
};
|
|
|
|
static int s2mpa01_pmic_probe(struct platform_device *pdev)
|
|
{
|
|
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
|
|
struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
|
|
struct device_node *reg_np = NULL;
|
|
struct regulator_config config = { };
|
|
struct of_regulator_match *rdata;
|
|
struct s2mpa01_info *s2mpa01;
|
|
int i;
|
|
|
|
s2mpa01 = devm_kzalloc(&pdev->dev, sizeof(*s2mpa01), GFP_KERNEL);
|
|
if (!s2mpa01)
|
|
return -ENOMEM;
|
|
|
|
rdata = s2mpa01->rdata;
|
|
for (i = 0; i < S2MPA01_REGULATOR_CNT; i++)
|
|
rdata[i].name = regulators[i].name;
|
|
|
|
if (iodev->dev->of_node) {
|
|
reg_np = of_get_child_by_name(iodev->dev->of_node,
|
|
"regulators");
|
|
if (!reg_np) {
|
|
dev_err(&pdev->dev,
|
|
"could not find regulators sub-node\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
of_regulator_match(&pdev->dev, reg_np, rdata,
|
|
S2MPA01_REGULATOR_MAX);
|
|
of_node_put(reg_np);
|
|
}
|
|
|
|
platform_set_drvdata(pdev, s2mpa01);
|
|
|
|
config.dev = &pdev->dev;
|
|
config.regmap = iodev->regmap_pmic;
|
|
config.driver_data = s2mpa01;
|
|
|
|
for (i = 0; i < S2MPA01_REGULATOR_MAX; i++) {
|
|
struct regulator_dev *rdev;
|
|
if (pdata)
|
|
config.init_data = pdata->regulators[i].initdata;
|
|
else
|
|
config.init_data = rdata[i].init_data;
|
|
|
|
if (reg_np)
|
|
config.of_node = rdata[i].of_node;
|
|
|
|
rdev = devm_regulator_register(&pdev->dev,
|
|
®ulators[i], &config);
|
|
if (IS_ERR(rdev)) {
|
|
dev_err(&pdev->dev, "regulator init failed for %d\n",
|
|
i);
|
|
return PTR_ERR(rdev);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct platform_device_id s2mpa01_pmic_id[] = {
|
|
{ "s2mpa01-pmic", 0},
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(platform, s2mpa01_pmic_id);
|
|
|
|
static struct platform_driver s2mpa01_pmic_driver = {
|
|
.driver = {
|
|
.name = "s2mpa01-pmic",
|
|
},
|
|
.probe = s2mpa01_pmic_probe,
|
|
.id_table = s2mpa01_pmic_id,
|
|
};
|
|
|
|
module_platform_driver(s2mpa01_pmic_driver);
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
|
|
MODULE_AUTHOR("Sachin Kamat <sachin.kamat@samsung.com>");
|
|
MODULE_DESCRIPTION("SAMSUNG S2MPA01 Regulator Driver");
|
|
MODULE_LICENSE("GPL");
|