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Release 4.14 drivers/regulator/88pm800.c

/*
 * Regulators driver for Marvell 88PM800
 *
 * Copyright (C) 2012 Marvell International Ltd.
 * Joseph(Yossi) Hanin <yhanin@marvell.com>
 * Yi Zhang <yizhang@marvell.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/88pm80x.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/regulator/of_regulator.h>

/* LDO1 with DVC[0..3] */

#define PM800_LDO1_VOUT		(0x08) 
/* VOUT1 */

#define PM800_LDO1_VOUT_2	(0x09)

#define PM800_LDO1_VOUT_3	(0x0A)

#define PM800_LDO2_VOUT		(0x0B)

#define PM800_LDO3_VOUT		(0x0C)

#define PM800_LDO4_VOUT		(0x0D)

#define PM800_LDO5_VOUT		(0x0E)

#define PM800_LDO6_VOUT		(0x0F)

#define PM800_LDO7_VOUT		(0x10)

#define PM800_LDO8_VOUT		(0x11)

#define PM800_LDO9_VOUT		(0x12)

#define PM800_LDO10_VOUT	(0x13)

#define PM800_LDO11_VOUT	(0x14)

#define PM800_LDO12_VOUT	(0x15)

#define PM800_LDO13_VOUT	(0x16)

#define PM800_LDO14_VOUT	(0x17)

#define PM800_LDO15_VOUT	(0x18)

#define PM800_LDO16_VOUT	(0x19)

#define PM800_LDO17_VOUT	(0x1A)

#define PM800_LDO18_VOUT	(0x1B)

#define PM800_LDO19_VOUT	(0x1C)

/* BUCK1 with DVC[0..3] */

#define PM800_BUCK1		(0x3C)

#define PM800_BUCK1_1		(0x3D)

#define PM800_BUCK1_2		(0x3E)

#define PM800_BUCK1_3		(0x3F)

#define PM800_BUCK2		(0x40)

#define PM800_BUCK3		(0x41)

#define PM800_BUCK4		(0x42)

#define PM800_BUCK4_1		(0x43)

#define PM800_BUCK4_2		(0x44)

#define PM800_BUCK4_3		(0x45)

#define PM800_BUCK5		(0x46)


#define PM800_BUCK_ENA		(0x50)

#define PM800_LDO_ENA1_1	(0x51)

#define PM800_LDO_ENA1_2	(0x52)

#define PM800_LDO_ENA1_3	(0x53)


#define PM800_LDO_ENA2_1	(0x56)

#define PM800_LDO_ENA2_2	(0x57)

#define PM800_LDO_ENA2_3	(0x58)


#define PM800_BUCK1_MISC1	(0x78)

#define PM800_BUCK3_MISC1	(0x7E)

#define PM800_BUCK4_MISC1	(0x81)

#define PM800_BUCK5_MISC1	(0x84)


struct pm800_regulator_info {
	
struct regulator_desc desc;
	
int max_ua;
};


struct pm800_regulators {
	
struct pm80x_chip *chip;
	
struct regmap *map;
};

/*
 * vreg - the buck regs string.
 * ereg - the string for the enable register.
 * ebit - the bit number in the enable register.
 * amax - the current
 * Buck has 2 kinds of voltage steps. It is easy to find voltage by ranges,
 * not the constant voltage table.
 * n_volt - Number of available selectors
 */

#define PM800_BUCK(match, vreg, ereg, ebit, amax, volt_ranges, n_volt)	\
{                                                                       \
        .desc   = {                                                     \
                .name                   = #vreg,                        \
                .of_match               = of_match_ptr(#match),         \
                .regulators_node        = of_match_ptr("regulators"),   \
                .ops                    = &pm800_volt_range_ops,        \
                .type                   = REGULATOR_VOLTAGE,            \
                .id                     = PM800_ID_##vreg,              \
                .owner                  = THIS_MODULE,                  \
                .n_voltages             = n_volt,                       \
                .linear_ranges          = volt_ranges,                  \
                .n_linear_ranges        = ARRAY_SIZE(volt_ranges),      \
                .vsel_reg               = PM800_##vreg,                 \
                .vsel_mask              = 0x7f,                         \
                .enable_reg             = PM800_##ereg,                 \
                .enable_mask            = 1 << (ebit),                  \
        },                                                              \
        .max_ua = (amax),                                               \
}

/*
 * vreg - the LDO regs string
 * ereg -  the string for the enable register.
 * ebit - the bit number in the enable register.
 * amax - the current
 * volt_table - the LDO voltage table
 * For all the LDOes, there are too many ranges. Using volt_table will be
 * simpler and faster.
 */

#define PM800_LDO(match, vreg, ereg, ebit, amax, ldo_volt_table)	\
{                                                                       \
        .desc   = {                                                     \
                .name                   = #vreg,                        \
                .of_match               = of_match_ptr(#match),         \
                .regulators_node        = of_match_ptr("regulators"),   \
                .ops                    = &pm800_volt_table_ops,        \
                .type                   = REGULATOR_VOLTAGE,            \
                .id                     = PM800_ID_##vreg,              \
                .owner                  = THIS_MODULE,                  \
                .n_voltages             = ARRAY_SIZE(ldo_volt_table),   \
                .vsel_reg               = PM800_##vreg##_VOUT,          \
                .vsel_mask              = 0xf,                          \
                .enable_reg             = PM800_##ereg,                 \
                .enable_mask            = 1 << (ebit),                  \
                .volt_table             = ldo_volt_table,               \
        },                                                              \
        .max_ua = (amax),                                               \
}

/* Ranges are sorted in ascending order. */

static const struct regulator_linear_range buck1_volt_range[] = {
	REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500),
	REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x54, 50000),
};

/* BUCK 2~5 have same ranges. */

static const struct regulator_linear_range buck2_5_volt_range[] = {
	REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500),
	REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x72, 50000),
};


static const unsigned int ldo1_volt_table[] = {
	600000,  650000,  700000,  750000,  800000,  850000,  900000,  950000,
	1000000, 1050000, 1100000, 1150000, 1200000, 1300000, 1400000, 1500000,
};


static const unsigned int ldo2_volt_table[] = {
	1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000,
};

/* LDO 3~17 have same voltage table. */

static const unsigned int ldo3_17_volt_table[] = {
	1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000,
	2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000,
};

/* LDO 18~19 have same voltage table. */

static const unsigned int ldo18_19_volt_table[] = {
	1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000,
};


static int pm800_get_current_limit(struct regulator_dev *rdev) { struct pm800_regulator_info *info = rdev_get_drvdata(rdev); return info->max_ua; }

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Chao Xie26100.00%1100.00%
Total26100.00%1100.00%

static const struct regulator_ops pm800_volt_range_ops = { .list_voltage = regulator_list_voltage_linear_range, .map_voltage = regulator_map_voltage_linear_range, .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, .get_current_limit = pm800_get_current_limit, }; static const struct regulator_ops pm800_volt_table_ops = { .list_voltage = regulator_list_voltage_table, .map_voltage = regulator_map_voltage_iterate, .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, .get_current_limit = pm800_get_current_limit, }; /* The array is indexed by id(PM800_ID_XXX) */ static struct pm800_regulator_info pm800_regulator_info[] = { PM800_BUCK(buck1, BUCK1, BUCK_ENA, 0, 3000000, buck1_volt_range, 0x55), PM800_BUCK(buck2, BUCK2, BUCK_ENA, 1, 1200000, buck2_5_volt_range, 0x73), PM800_BUCK(buck3, BUCK3, BUCK_ENA, 2, 1200000, buck2_5_volt_range, 0x73), PM800_BUCK(buck4, BUCK4, BUCK_ENA, 3, 1200000, buck2_5_volt_range, 0x73), PM800_BUCK(buck5, BUCK5, BUCK_ENA, 4, 1200000, buck2_5_volt_range, 0x73), PM800_LDO(ldo1, LDO1, LDO_ENA1_1, 0, 200000, ldo1_volt_table), PM800_LDO(ldo2, LDO2, LDO_ENA1_1, 1, 10000, ldo2_volt_table), PM800_LDO(ldo3, LDO3, LDO_ENA1_1, 2, 300000, ldo3_17_volt_table), PM800_LDO(ldo4, LDO4, LDO_ENA1_1, 3, 300000, ldo3_17_volt_table), PM800_LDO(ldo5, LDO5, LDO_ENA1_1, 4, 300000, ldo3_17_volt_table), PM800_LDO(ldo6, LDO6, LDO_ENA1_1, 5, 300000, ldo3_17_volt_table), PM800_LDO(ldo7, LDO7, LDO_ENA1_1, 6, 300000, ldo3_17_volt_table), PM800_LDO(ldo8, LDO8, LDO_ENA1_1, 7, 300000, ldo3_17_volt_table), PM800_LDO(ldo9, LDO9, LDO_ENA1_2, 0, 300000, ldo3_17_volt_table), PM800_LDO(ldo10, LDO10, LDO_ENA1_2, 1, 300000, ldo3_17_volt_table), PM800_LDO(ldo11, LDO11, LDO_ENA1_2, 2, 300000, ldo3_17_volt_table), PM800_LDO(ldo12, LDO12, LDO_ENA1_2, 3, 300000, ldo3_17_volt_table), PM800_LDO(ldo13, LDO13, LDO_ENA1_2, 4, 300000, ldo3_17_volt_table), PM800_LDO(ldo14, LDO14, LDO_ENA1_2, 5, 300000, ldo3_17_volt_table), PM800_LDO(ldo15, LDO15, LDO_ENA1_2, 6, 300000, ldo3_17_volt_table), PM800_LDO(ldo16, LDO16, LDO_ENA1_2, 7, 300000, ldo3_17_volt_table), PM800_LDO(ldo17, LDO17, LDO_ENA1_3, 0, 300000, ldo3_17_volt_table), PM800_LDO(ldo18, LDO18, LDO_ENA1_3, 1, 200000, ldo18_19_volt_table), PM800_LDO(ldo19, LDO19, LDO_ENA1_3, 2, 200000, ldo18_19_volt_table), };
static int pm800_regulator_probe(struct platform_device *pdev) { struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent); struct pm80x_platform_data *pdata = dev_get_platdata(pdev->dev.parent); struct pm800_regulators *pm800_data; struct regulator_config config = { }; struct regulator_init_data *init_data; int i, ret; if (pdata && pdata->num_regulators) { unsigned int count = 0; /* Check whether num_regulator is valid. */ for (i = 0; i < ARRAY_SIZE(pdata->regulators); i++) { if (pdata->regulators[i]) count++; } if (count != pdata->num_regulators) return -EINVAL; } pm800_data = devm_kzalloc(&pdev->dev, sizeof(*pm800_data), GFP_KERNEL); if (!pm800_data) return -ENOMEM; pm800_data->map = chip->subchip->regmap_power; pm800_data->chip = chip; platform_set_drvdata(pdev, pm800_data); config.dev = chip->dev; config.regmap = pm800_data->map; for (i = 0; i < PM800_ID_RG_MAX; i++) { struct regulator_dev *regulator; if (pdata && pdata->num_regulators) { init_data = pdata->regulators[i]; if (!init_data) continue; config.init_data = init_data; } config.driver_data = &pm800_regulator_info[i]; regulator = devm_regulator_register(&pdev->dev, &pm800_regulator_info[i].desc, &config); if (IS_ERR(regulator)) { ret = PTR_ERR(regulator); dev_err(&pdev->dev, "Failed to register %s\n", pm800_regulator_info[i].desc.name); return ret; } } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Chao Xie24077.42%114.29%
Vaibhav Hiremath4614.84%228.57%
Axel Lin196.13%228.57%
Jingoo Han30.97%114.29%
Dan Carpenter20.65%114.29%
Total310100.00%7100.00%

static struct platform_driver pm800_regulator_driver = { .driver = { .name = "88pm80x-regulator", }, .probe = pm800_regulator_probe, }; module_platform_driver(pm800_regulator_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Joseph(Yossi) Hanin <yhanin@marvell.com>"); MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM800 PMIC"); MODULE_ALIAS("platform:88pm800-regulator");

Overall Contributors

PersonTokensPropCommitsCommitProp
Chao Xie117287.79%19.09%
Vaibhav Hiremath997.42%218.18%
Axel Lin564.19%436.36%
Jingoo Han30.22%19.09%
Dan Carpenter20.15%19.09%
Bhumika Goyal20.15%19.09%
Mark Brown10.07%19.09%
Total1335100.00%11100.00%
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