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regulator: arizona-ldo1: Add support for Cirrus Logic Madera codecs 

This adds a new driver identity "madera-ldo1" and probe function
so that this driver can be used to control the LDO1 regulator on
some Cirrus Logic Madera codecs.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Richard Fitzgerald 2019-05-21 11:04:38 +01:00 committed by Mark Brown
parent 46f4050a65
commit 1f5f11e737
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 86 additions and 5 deletions
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8
drivers/regulator/Kconfig
View File

@ -135,12 +135,12 @@ config REGULATOR_AB8500
signal AB8500 PMIC
config REGULATOR_ARIZONA_LDO1
tristate "Wolfson Arizona class devices LDO1"
depends on MFD_ARIZONA
tristate "Cirrus Madera and Wolfson Arizona class devices LDO1"
depends on MFD_ARIZONA || MFD_MADERA
depends on SND_SOC
help
Support for the LDO1 regulators found on Wolfson Arizona class
devices.
Support for the LDO1 regulators found on Cirrus Logic Madera codecs
and Wolfson Microelectronic Arizona codecs.
config REGULATOR_ARIZONA_MICSUPP
tristate "Wolfson Arizona class devices MICSUPP"

83
drivers/regulator/arizona-ldo1.c
View File

@ -25,6 +25,10 @@
#include <linux/mfd/arizona/pdata.h>
#include <linux/mfd/arizona/registers.h>
#include <linux/mfd/madera/core.h>
#include <linux/mfd/madera/pdata.h>
#include <linux/mfd/madera/registers.h>
struct arizona_ldo1 {
struct regulator_dev *regulator;
struct regmap *regmap;
@ -158,6 +162,31 @@ static const struct regulator_init_data arizona_ldo1_wm5110 = {
.num_consumer_supplies = 1,
};
static const struct regulator_desc madera_ldo1 = {
.name = "LDO1",
.supply_name = "LDOVDD",
.type = REGULATOR_VOLTAGE,
.ops = &arizona_ldo1_ops,
.vsel_reg = MADERA_LDO1_CONTROL_1,
.vsel_mask = MADERA_LDO1_VSEL_MASK,
.min_uV = 900000,
.uV_step = 25000,
.n_voltages = 13,
.enable_time = 3000,
.owner = THIS_MODULE,
};
static const struct regulator_init_data madera_ldo1_default = {
.constraints = {
.min_uV = 1200000,
.max_uV = 1200000,
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = 1,
};
static int arizona_ldo1_of_get_pdata(struct arizona_ldo1_pdata *pdata,
struct regulator_config *config,
const struct regulator_desc *desc,
@ -320,6 +349,32 @@ static int arizona_ldo1_remove(struct platform_device *pdev)
return 0;
}
static int madera_ldo1_probe(struct platform_device *pdev)
{
struct madera *madera = dev_get_drvdata(pdev->dev.parent);
struct arizona_ldo1 *ldo1;
bool external_dcvdd;
int ret;
ldo1 = devm_kzalloc(&pdev->dev, sizeof(*ldo1), GFP_KERNEL);
if (!ldo1)
return -ENOMEM;
ldo1->regmap = madera->regmap;
ldo1->init_data = madera_ldo1_default;
ret = arizona_ldo1_common_init(pdev, ldo1, &madera_ldo1,
&madera->pdata.ldo1,
&external_dcvdd);
if (ret)
return ret;
madera->internal_dcvdd = !external_dcvdd;
return 0;
}
static struct platform_driver arizona_ldo1_driver = {
.probe = arizona_ldo1_probe,
.remove = arizona_ldo1_remove,
@ -328,10 +383,36 @@ static struct platform_driver arizona_ldo1_driver = {
},
};
module_platform_driver(arizona_ldo1_driver);
static struct platform_driver madera_ldo1_driver = {
.probe = madera_ldo1_probe,
.remove = arizona_ldo1_remove,
.driver = {
.name = "madera-ldo1",
},
};
static struct platform_driver * const madera_ldo1_drivers[] = {
&arizona_ldo1_driver,
&madera_ldo1_driver,
};
static int __init arizona_ldo1_init(void)
{
return platform_register_drivers(madera_ldo1_drivers,
ARRAY_SIZE(madera_ldo1_drivers));
}
module_init(arizona_ldo1_init);
static void __exit madera_ldo1_exit(void)
{
platform_unregister_drivers(madera_ldo1_drivers,
ARRAY_SIZE(madera_ldo1_drivers));
}
module_exit(madera_ldo1_exit);
/* Module information */
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_DESCRIPTION("Arizona LDO1 driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:arizona-ldo1");
MODULE_ALIAS("platform:madera-ldo1");