mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-04 03:14:02 +08:00
259b93b21a
Probing of regulators can be a slow operation and can contribute to slower boot times. This is especially true if a regulator is turned on at probe time (with regulator-boot-on or regulator-always-on) and the regulator requires delays (off-on-time, ramp time, etc). While the overall kernel is not ready to switch to async probe by default, as per the discussion on the mailing lists [1] it is believed that the regulator subsystem is in good shape and we can move regulator drivers over wholesale. There is no way to just magically opt in all regulators (regulators are just normal drivers like platform_driver), so we set PROBE_PREFER_ASYNCHRONOUS for all regulators found in 'drivers/regulator' individually. Given the number of drivers touched and the impossibility to test this ahead of time, it wouldn't be shocking at all if this caused a regression for someone. If there is a regression caused by this patch, it's likely to be one of the cases talked about in [1]. As a "quick fix", drivers involved in the regression could be fixed by changing them to PROBE_FORCE_SYNCHRONOUS. That being said, the correct fix would be to directly fix the problem that caused the issue with async probe. The approach here follows a similar approach that was used for the mmc subsystem several years ago [2]. In fact, I ran nearly the same python script to auto-generate the changes. The only thing I changed was to search for "i2c_driver", "spmi_driver", and "spi_driver" in addition to "platform_driver". [1] https://lore.kernel.org/r/06db017f-e985-4434-8d1d-02ca2100cca0@sirena.org.uk [2] https://lore.kernel.org/r/20200903232441.2694866-1-dianders@chromium.org/ Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20230316125351.1.I2a4677392a38db5758dee0788b2cea5872562a82@changeid Signed-off-by: Mark Brown <broonie@kernel.org>
408 lines
14 KiB
C
408 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Regulators driver for Marvell 88PM8607
|
|
*
|
|
* Copyright (C) 2009 Marvell International Ltd.
|
|
* Haojian Zhuang <haojian.zhuang@marvell.com>
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/err.h>
|
|
#include <linux/of.h>
|
|
#include <linux/regulator/of_regulator.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regulator/driver.h>
|
|
#include <linux/regulator/machine.h>
|
|
#include <linux/mfd/88pm860x.h>
|
|
#include <linux/module.h>
|
|
|
|
struct pm8607_regulator_info {
|
|
struct regulator_desc desc;
|
|
|
|
unsigned int *vol_suspend;
|
|
|
|
int slope_double;
|
|
};
|
|
|
|
static const unsigned int BUCK1_table[] = {
|
|
725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000,
|
|
925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000,
|
|
1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
|
|
1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
|
|
0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
|
|
200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
|
|
400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
|
|
600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
|
|
};
|
|
|
|
static const unsigned int BUCK1_suspend_table[] = {
|
|
0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
|
|
200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
|
|
400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
|
|
600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
|
|
800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
|
|
1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
|
|
1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
|
|
1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
|
|
};
|
|
|
|
static const unsigned int BUCK2_table[] = {
|
|
0, 50000, 100000, 150000, 200000, 250000, 300000, 350000,
|
|
400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000,
|
|
800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000,
|
|
1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
|
|
1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
|
|
2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
|
|
2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
|
|
2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
|
|
};
|
|
|
|
static const unsigned int BUCK2_suspend_table[] = {
|
|
0, 50000, 100000, 150000, 200000, 250000, 300000, 350000,
|
|
400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000,
|
|
800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000,
|
|
1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
|
|
1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
|
|
2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
|
|
2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
|
|
2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
|
|
};
|
|
|
|
static const unsigned int BUCK3_table[] = {
|
|
0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
|
|
200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
|
|
400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
|
|
600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
|
|
800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
|
|
1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
|
|
1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
|
|
1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
|
|
};
|
|
|
|
static const unsigned int BUCK3_suspend_table[] = {
|
|
0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
|
|
200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
|
|
400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
|
|
600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
|
|
800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
|
|
1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
|
|
1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
|
|
1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
|
|
};
|
|
|
|
static const unsigned int LDO1_table[] = {
|
|
1800000, 1200000, 2800000, 0,
|
|
};
|
|
|
|
static const unsigned int LDO1_suspend_table[] = {
|
|
1800000, 1200000, 0, 0,
|
|
};
|
|
|
|
static const unsigned int LDO2_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
|
|
};
|
|
|
|
static const unsigned int LDO2_suspend_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO3_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
|
|
};
|
|
|
|
static const unsigned int LDO3_suspend_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO4_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
|
|
};
|
|
|
|
static const unsigned int LDO4_suspend_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO5_table[] = {
|
|
2900000, 3000000, 3100000, 3300000,
|
|
};
|
|
|
|
static const unsigned int LDO5_suspend_table[] = {
|
|
2900000, 0, 0, 0,
|
|
};
|
|
|
|
static const unsigned int LDO6_table[] = {
|
|
1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
|
|
};
|
|
|
|
static const unsigned int LDO6_suspend_table[] = {
|
|
1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO7_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO7_suspend_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO8_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO8_suspend_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO9_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
|
|
};
|
|
|
|
static const unsigned int LDO9_suspend_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO10_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
|
|
1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
|
|
};
|
|
|
|
static const unsigned int LDO10_suspend_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
|
|
};
|
|
|
|
static const unsigned int LDO12_table[] = {
|
|
1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000,
|
|
1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
|
|
};
|
|
|
|
static const unsigned int LDO12_suspend_table[] = {
|
|
1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000,
|
|
1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
|
|
};
|
|
|
|
static const unsigned int LDO13_table[] = {
|
|
1200000, 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0,
|
|
};
|
|
|
|
static const unsigned int LDO13_suspend_table[] = {
|
|
0,
|
|
};
|
|
|
|
static const unsigned int LDO14_table[] = {
|
|
1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
|
|
};
|
|
|
|
static const unsigned int LDO14_suspend_table[] = {
|
|
1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
|
|
};
|
|
|
|
static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
|
|
{
|
|
struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
|
|
int ret;
|
|
|
|
ret = regulator_list_voltage_table(rdev, index);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (info->slope_double)
|
|
ret <<= 1;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct regulator_ops pm8607_regulator_ops = {
|
|
.list_voltage = pm8607_list_voltage,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
};
|
|
|
|
static const struct regulator_ops pm8606_preg_ops = {
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
};
|
|
|
|
#define PM8606_PREG(ereg, ebit) \
|
|
{ \
|
|
.desc = { \
|
|
.name = "PREG", \
|
|
.of_match = of_match_ptr("PREG"), \
|
|
.regulators_node = of_match_ptr("regulators"), \
|
|
.ops = &pm8606_preg_ops, \
|
|
.type = REGULATOR_CURRENT, \
|
|
.id = PM8606_ID_PREG, \
|
|
.owner = THIS_MODULE, \
|
|
.enable_reg = PM8606_##ereg, \
|
|
.enable_mask = (ebit), \
|
|
.enable_is_inverted = true, \
|
|
}, \
|
|
}
|
|
|
|
#define PM8607_DVC(vreg, ureg, ubit, ereg, ebit) \
|
|
{ \
|
|
.desc = { \
|
|
.name = #vreg, \
|
|
.of_match = of_match_ptr(#vreg), \
|
|
.regulators_node = of_match_ptr("regulators"), \
|
|
.ops = &pm8607_regulator_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.id = PM8607_ID_##vreg, \
|
|
.owner = THIS_MODULE, \
|
|
.volt_table = vreg##_table, \
|
|
.n_voltages = ARRAY_SIZE(vreg##_table), \
|
|
.vsel_reg = PM8607_##vreg, \
|
|
.vsel_mask = ARRAY_SIZE(vreg##_table) - 1, \
|
|
.apply_reg = PM8607_##ureg, \
|
|
.apply_bit = (ubit), \
|
|
.enable_reg = PM8607_##ereg, \
|
|
.enable_mask = 1 << (ebit), \
|
|
}, \
|
|
.slope_double = (0), \
|
|
.vol_suspend = (unsigned int *)&vreg##_suspend_table, \
|
|
}
|
|
|
|
#define PM8607_LDO(_id, vreg, shift, ereg, ebit) \
|
|
{ \
|
|
.desc = { \
|
|
.name = "LDO" #_id, \
|
|
.of_match = of_match_ptr("LDO" #_id), \
|
|
.regulators_node = of_match_ptr("regulators"), \
|
|
.ops = &pm8607_regulator_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.id = PM8607_ID_LDO##_id, \
|
|
.owner = THIS_MODULE, \
|
|
.volt_table = LDO##_id##_table, \
|
|
.n_voltages = ARRAY_SIZE(LDO##_id##_table), \
|
|
.vsel_reg = PM8607_##vreg, \
|
|
.vsel_mask = (ARRAY_SIZE(LDO##_id##_table) - 1) << (shift), \
|
|
.enable_reg = PM8607_##ereg, \
|
|
.enable_mask = 1 << (ebit), \
|
|
}, \
|
|
.slope_double = (0), \
|
|
.vol_suspend = (unsigned int *)&LDO##_id##_suspend_table, \
|
|
}
|
|
|
|
static struct pm8607_regulator_info pm8607_regulator_info[] = {
|
|
PM8607_DVC(BUCK1, GO, BIT(0), SUPPLIES_EN11, 0),
|
|
PM8607_DVC(BUCK2, GO, BIT(1), SUPPLIES_EN11, 1),
|
|
PM8607_DVC(BUCK3, GO, BIT(2), SUPPLIES_EN11, 2),
|
|
|
|
PM8607_LDO(1, LDO1, 0, SUPPLIES_EN11, 3),
|
|
PM8607_LDO(2, LDO2, 0, SUPPLIES_EN11, 4),
|
|
PM8607_LDO(3, LDO3, 0, SUPPLIES_EN11, 5),
|
|
PM8607_LDO(4, LDO4, 0, SUPPLIES_EN11, 6),
|
|
PM8607_LDO(5, LDO5, 0, SUPPLIES_EN11, 7),
|
|
PM8607_LDO(6, LDO6, 0, SUPPLIES_EN12, 0),
|
|
PM8607_LDO(7, LDO7, 0, SUPPLIES_EN12, 1),
|
|
PM8607_LDO(8, LDO8, 0, SUPPLIES_EN12, 2),
|
|
PM8607_LDO(9, LDO9, 0, SUPPLIES_EN12, 3),
|
|
PM8607_LDO(10, LDO10, 0, SUPPLIES_EN12, 4),
|
|
PM8607_LDO(12, LDO12, 0, SUPPLIES_EN12, 5),
|
|
PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0),
|
|
PM8607_LDO(14, LDO14, 0, SUPPLIES_EN12, 6),
|
|
};
|
|
|
|
static struct pm8607_regulator_info pm8606_regulator_info[] = {
|
|
PM8606_PREG(PREREGULATORB, 5),
|
|
};
|
|
|
|
static int pm8607_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
|
|
struct pm8607_regulator_info *info = NULL;
|
|
struct regulator_init_data *pdata = dev_get_platdata(&pdev->dev);
|
|
struct regulator_config config = { };
|
|
struct regulator_dev *rdev;
|
|
struct resource *res;
|
|
int i;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_REG, 0);
|
|
if (res) {
|
|
/* There're resources in 88PM8607 regulator driver */
|
|
for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
|
|
info = &pm8607_regulator_info[i];
|
|
if (info->desc.vsel_reg == res->start)
|
|
break;
|
|
}
|
|
if (i == ARRAY_SIZE(pm8607_regulator_info)) {
|
|
dev_err(&pdev->dev, "Failed to find regulator %llu\n",
|
|
(unsigned long long)res->start);
|
|
return -EINVAL;
|
|
}
|
|
} else {
|
|
/* There's no resource in 88PM8606 PREG regulator driver */
|
|
info = &pm8606_regulator_info[0];
|
|
/* i is used to check regulator ID */
|
|
i = -1;
|
|
}
|
|
|
|
/* check DVC ramp slope double */
|
|
if ((i == PM8607_ID_BUCK3) && chip->buck3_double)
|
|
info->slope_double = 1;
|
|
|
|
config.dev = chip->dev;
|
|
config.driver_data = info;
|
|
|
|
if (pdata)
|
|
config.init_data = pdata;
|
|
|
|
if (chip->id == CHIP_PM8607)
|
|
config.regmap = chip->regmap;
|
|
else
|
|
config.regmap = chip->regmap_companion;
|
|
|
|
rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
|
|
if (IS_ERR(rdev)) {
|
|
dev_err(&pdev->dev, "failed to register regulator %s\n",
|
|
info->desc.name);
|
|
return PTR_ERR(rdev);
|
|
}
|
|
|
|
platform_set_drvdata(pdev, info);
|
|
return 0;
|
|
}
|
|
|
|
static const struct platform_device_id pm8607_regulator_driver_ids[] = {
|
|
{
|
|
.name = "88pm860x-regulator",
|
|
.driver_data = 0,
|
|
}, {
|
|
.name = "88pm860x-preg",
|
|
.driver_data = 0,
|
|
},
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids);
|
|
|
|
static struct platform_driver pm8607_regulator_driver = {
|
|
.driver = {
|
|
.name = "88pm860x-regulator",
|
|
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
|
|
},
|
|
.probe = pm8607_regulator_probe,
|
|
.id_table = pm8607_regulator_driver_ids,
|
|
};
|
|
|
|
static int __init pm8607_regulator_init(void)
|
|
{
|
|
return platform_driver_register(&pm8607_regulator_driver);
|
|
}
|
|
subsys_initcall(pm8607_regulator_init);
|
|
|
|
static void __exit pm8607_regulator_exit(void)
|
|
{
|
|
platform_driver_unregister(&pm8607_regulator_driver);
|
|
}
|
|
module_exit(pm8607_regulator_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
|
|
MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
|
|
MODULE_ALIAS("platform:88pm8607-regulator");
|