mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 13:40:53 +07:00
258 lines
6.4 KiB
C
258 lines
6.4 KiB
C
/*
|
|
* arizona-micsupp.c -- Microphone supply for Arizona devices
|
|
*
|
|
* Copyright 2012 Wolfson Microelectronics PLC.
|
|
*
|
|
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/init.h>
|
|
#include <linux/bitops.h>
|
|
#include <linux/err.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regulator/driver.h>
|
|
#include <linux/regulator/machine.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/workqueue.h>
|
|
#include <sound/soc.h>
|
|
|
|
#include <linux/mfd/arizona/core.h>
|
|
#include <linux/mfd/arizona/pdata.h>
|
|
#include <linux/mfd/arizona/registers.h>
|
|
|
|
#define ARIZONA_MICSUPP_MAX_SELECTOR 0x1f
|
|
|
|
struct arizona_micsupp {
|
|
struct regulator_dev *regulator;
|
|
struct arizona *arizona;
|
|
|
|
struct regulator_consumer_supply supply;
|
|
struct regulator_init_data init_data;
|
|
|
|
struct work_struct check_cp_work;
|
|
};
|
|
|
|
static int arizona_micsupp_list_voltage(struct regulator_dev *rdev,
|
|
unsigned int selector)
|
|
{
|
|
if (selector > ARIZONA_MICSUPP_MAX_SELECTOR)
|
|
return -EINVAL;
|
|
|
|
if (selector == ARIZONA_MICSUPP_MAX_SELECTOR)
|
|
return 3300000;
|
|
else
|
|
return (selector * 50000) + 1700000;
|
|
}
|
|
|
|
static int arizona_micsupp_map_voltage(struct regulator_dev *rdev,
|
|
int min_uV, int max_uV)
|
|
{
|
|
unsigned int voltage;
|
|
int selector;
|
|
|
|
if (min_uV < 1700000)
|
|
min_uV = 1700000;
|
|
|
|
if (min_uV > 3200000)
|
|
selector = ARIZONA_MICSUPP_MAX_SELECTOR;
|
|
else
|
|
selector = DIV_ROUND_UP(min_uV - 1700000, 50000);
|
|
|
|
if (selector < 0)
|
|
return -EINVAL;
|
|
|
|
voltage = arizona_micsupp_list_voltage(rdev, selector);
|
|
if (voltage < min_uV || voltage > max_uV)
|
|
return -EINVAL;
|
|
|
|
return selector;
|
|
}
|
|
|
|
static void arizona_micsupp_check_cp(struct work_struct *work)
|
|
{
|
|
struct arizona_micsupp *micsupp =
|
|
container_of(work, struct arizona_micsupp, check_cp_work);
|
|
struct snd_soc_dapm_context *dapm = micsupp->arizona->dapm;
|
|
struct arizona *arizona = micsupp->arizona;
|
|
struct regmap *regmap = arizona->regmap;
|
|
unsigned int reg;
|
|
int ret;
|
|
|
|
ret = regmap_read(regmap, ARIZONA_MIC_CHARGE_PUMP_1, ®);
|
|
if (ret != 0) {
|
|
dev_err(arizona->dev, "Failed to read CP state: %d\n", ret);
|
|
return;
|
|
}
|
|
|
|
if (dapm) {
|
|
if ((reg & (ARIZONA_CPMIC_ENA | ARIZONA_CPMIC_BYPASS)) ==
|
|
ARIZONA_CPMIC_ENA)
|
|
snd_soc_dapm_force_enable_pin(dapm, "MICSUPP");
|
|
else
|
|
snd_soc_dapm_disable_pin(dapm, "MICSUPP");
|
|
|
|
snd_soc_dapm_sync(dapm);
|
|
}
|
|
}
|
|
|
|
static int arizona_micsupp_enable(struct regulator_dev *rdev)
|
|
{
|
|
struct arizona_micsupp *micsupp = rdev_get_drvdata(rdev);
|
|
int ret;
|
|
|
|
ret = regulator_enable_regmap(rdev);
|
|
|
|
if (ret == 0)
|
|
schedule_work(&micsupp->check_cp_work);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int arizona_micsupp_disable(struct regulator_dev *rdev)
|
|
{
|
|
struct arizona_micsupp *micsupp = rdev_get_drvdata(rdev);
|
|
int ret;
|
|
|
|
ret = regulator_disable_regmap(rdev);
|
|
if (ret == 0)
|
|
schedule_work(&micsupp->check_cp_work);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int arizona_micsupp_set_bypass(struct regulator_dev *rdev, bool ena)
|
|
{
|
|
struct arizona_micsupp *micsupp = rdev_get_drvdata(rdev);
|
|
int ret;
|
|
|
|
ret = regulator_set_bypass_regmap(rdev, ena);
|
|
if (ret == 0)
|
|
schedule_work(&micsupp->check_cp_work);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct regulator_ops arizona_micsupp_ops = {
|
|
.enable = arizona_micsupp_enable,
|
|
.disable = arizona_micsupp_disable,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
|
|
.list_voltage = arizona_micsupp_list_voltage,
|
|
.map_voltage = arizona_micsupp_map_voltage,
|
|
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
|
|
.get_bypass = regulator_get_bypass_regmap,
|
|
.set_bypass = arizona_micsupp_set_bypass,
|
|
};
|
|
|
|
static const struct regulator_desc arizona_micsupp = {
|
|
.name = "MICVDD",
|
|
.supply_name = "CPVDD",
|
|
.type = REGULATOR_VOLTAGE,
|
|
.n_voltages = ARIZONA_MICSUPP_MAX_SELECTOR + 1,
|
|
.ops = &arizona_micsupp_ops,
|
|
|
|
.vsel_reg = ARIZONA_LDO2_CONTROL_1,
|
|
.vsel_mask = ARIZONA_LDO2_VSEL_MASK,
|
|
.enable_reg = ARIZONA_MIC_CHARGE_PUMP_1,
|
|
.enable_mask = ARIZONA_CPMIC_ENA,
|
|
.bypass_reg = ARIZONA_MIC_CHARGE_PUMP_1,
|
|
.bypass_mask = ARIZONA_CPMIC_BYPASS,
|
|
|
|
.enable_time = 3000,
|
|
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static const struct regulator_init_data arizona_micsupp_default = {
|
|
.constraints = {
|
|
.valid_ops_mask = REGULATOR_CHANGE_STATUS |
|
|
REGULATOR_CHANGE_VOLTAGE |
|
|
REGULATOR_CHANGE_BYPASS,
|
|
.min_uV = 1700000,
|
|
.max_uV = 3300000,
|
|
},
|
|
|
|
.num_consumer_supplies = 1,
|
|
};
|
|
|
|
static int arizona_micsupp_probe(struct platform_device *pdev)
|
|
{
|
|
struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
|
|
struct regulator_config config = { };
|
|
struct arizona_micsupp *micsupp;
|
|
int ret;
|
|
|
|
micsupp = devm_kzalloc(&pdev->dev, sizeof(*micsupp), GFP_KERNEL);
|
|
if (micsupp == NULL) {
|
|
dev_err(&pdev->dev, "Unable to allocate private data\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
micsupp->arizona = arizona;
|
|
INIT_WORK(&micsupp->check_cp_work, arizona_micsupp_check_cp);
|
|
|
|
/*
|
|
* Since the chip usually supplies itself we provide some
|
|
* default init_data for it. This will be overridden with
|
|
* platform data if provided.
|
|
*/
|
|
micsupp->init_data = arizona_micsupp_default;
|
|
micsupp->init_data.consumer_supplies = &micsupp->supply;
|
|
micsupp->supply.supply = "MICVDD";
|
|
micsupp->supply.dev_name = dev_name(arizona->dev);
|
|
|
|
config.dev = arizona->dev;
|
|
config.driver_data = micsupp;
|
|
config.regmap = arizona->regmap;
|
|
|
|
if (arizona->pdata.micvdd)
|
|
config.init_data = arizona->pdata.micvdd;
|
|
else
|
|
config.init_data = &micsupp->init_data;
|
|
|
|
/* Default to regulated mode until the API supports bypass */
|
|
regmap_update_bits(arizona->regmap, ARIZONA_MIC_CHARGE_PUMP_1,
|
|
ARIZONA_CPMIC_BYPASS, 0);
|
|
|
|
micsupp->regulator = devm_regulator_register(&pdev->dev,
|
|
&arizona_micsupp,
|
|
&config);
|
|
if (IS_ERR(micsupp->regulator)) {
|
|
ret = PTR_ERR(micsupp->regulator);
|
|
dev_err(arizona->dev, "Failed to register mic supply: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
platform_set_drvdata(pdev, micsupp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver arizona_micsupp_driver = {
|
|
.probe = arizona_micsupp_probe,
|
|
.driver = {
|
|
.name = "arizona-micsupp",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(arizona_micsupp_driver);
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
|
|
MODULE_DESCRIPTION("Arizona microphone supply driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:arizona-micsupp");
|