From: Richard Fitzgerald rf@opensource.wolfsonmicro.com
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.wolfsonmicro.com --- drivers/regulator/Kconfig | 8 ++-- drivers/regulator/arizona-ldo1.c | 82 +++++++++++++++++++++++++++++++++++++++- 2 files changed, 85 insertions(+), 5 deletions(-)
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 53639a6bd888..3db4f994aea8 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -126,12 +126,12 @@ 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 Arizona codecs.
config REGULATOR_ARIZONA_MICSUPP tristate "Cirrus Madera and Wolfson Arizona class devices MICSUPP" diff --git a/drivers/regulator/arizona-ldo1.c b/drivers/regulator/arizona-ldo1.c index 96fddfff5dc4..c64625e76124 100644 --- a/drivers/regulator/arizona-ldo1.c +++ b/drivers/regulator/arizona-ldo1.c @@ -31,6 +31,10 @@ #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; @@ -188,6 +192,31 @@ 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, @@ -341,6 +370,32 @@ static int arizona_ldo1_probe(struct platform_device *pdev) return ret; }
+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, &arizona_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, .driver = { @@ -348,10 +403,35 @@ static struct platform_driver arizona_ldo1_driver = { }, };
-module_platform_driver(arizona_ldo1_driver); +static struct platform_driver madera_ldo1_driver = { + .probe = madera_ldo1_probe, + .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");