[PATCH v4 07/17] regulator: arizona-micsupp: Add support for Cirrus Logic Madera codecs

Richard Fitzgerald
2017-07-28T09:55:15Z

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

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Acked-by: Rob Herring <robh@kernel.org>
---
No changes since V3

.../bindings/regulator/arizona-regulator.txt | 3 +-
drivers/regulator/Kconfig | 7 ++-
drivers/regulator/arizona-micsupp.c | 71 +++++++++++++++++++++-
3 files changed, 76 insertions(+), 5 deletions(-)

diff --git a/Documentation/devicetree/bindings/regulator/arizona-regulator.txt b/Documentation/devicetree/bindings/regulator/arizona-regulator.txt
index 443564d..91b00f9 100644
--- a/Documentation/devicetree/bindings/regulator/arizona-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/arizona-regulator.txt
@@ -5,7 +5,8 @@ of analogue I/O.

This document lists regulator specific bindings, see the primary binding
document:
- ../mfd/arizona.txt
+ For Wolfson Arizona codecs: ../mfd/arizona.txt
+ For Cirrus Logic Madera codecs: ../mfd/madera.txt

Optional properties:
- wlf,ldoena : GPIO specifier for the GPIO controlling LDOENA
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 99b9362..ed5679f 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -134,11 +134,12 @@ config REGULATOR_ARIZONA_LDO1
devices.

config REGULATOR_ARIZONA_MICSUPP
- tristate "Wolfson Arizona class devices MICSUPP"
- depends on MFD_ARIZONA
+ tristate "Cirrus Madera and Wolfson Arizona class devices MICSUPP"
+ depends on MFD_ARIZONA || MFD_MADERA
depends on SND_SOC
help
- Support for the MICSUPP regulators found on Wolfson Arizona class
+ Support for the MICSUPP regulators found on Cirrus Logic Madera codecs
+ and Wolfson Arizona codecs
devices.

config REGULATOR_AS3711
diff --git a/drivers/regulator/arizona-micsupp.c b/drivers/regulator/arizona-micsupp.c
index 120de94..36bf73c 100644
--- a/drivers/regulator/arizona-micsupp.c
+++ b/drivers/regulator/arizona-micsupp.c
@@ -30,6 +30,10 @@
#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>
+
#include <linux/regulator/arizona-micsupp.h>

struct arizona_micsupp {
@@ -205,6 +209,28 @@ static int arizona_micsupp_set_bypass(struct regulator_dev *rdev, bool ena)
.num_consumer_supplies = 1,
};

+static const struct regulator_desc madera_micsupp = {
+ .name = "MICVDD",
+ .supply_name = "CPVDD1",
+ .type = REGULATOR_VOLTAGE,
+ .n_voltages = 40,
+ .ops = &arizona_micsupp_ops,
+
+ .vsel_reg = MADERA_LDO2_CONTROL_1,
+ .vsel_mask = MADERA_LDO2_VSEL_MASK,
+ .enable_reg = MADERA_MIC_CHARGE_PUMP_1,
+ .enable_mask = MADERA_CPMIC_ENA,
+ .bypass_reg = MADERA_MIC_CHARGE_PUMP_1,
+ .bypass_mask = MADERA_CPMIC_BYPASS,
+
+ .linear_ranges = arizona_micsupp_ext_ranges,
+ .n_linear_ranges = ARRAY_SIZE(arizona_micsupp_ext_ranges),
+
+ .enable_time = 3000,
+
+ .owner = THIS_MODULE,
+};
+
static int arizona_micsupp_of_get_pdata(struct arizona_micsupp_pdata *pdata,
struct regulator_config *config,
const struct regulator_desc *desc)
@@ -321,6 +347,24 @@ static int arizona_micsupp_probe(struct platform_device *pdev)
&arizona->pdata.micvdd);
}

+static int madera_micsupp_probe(struct platform_device *pdev)
+{
+ struct madera *madera = dev_get_drvdata(pdev->dev.parent);
+ struct arizona_micsupp *micsupp;
+
+ micsupp = devm_kzalloc(&pdev->dev, sizeof(*micsupp), GFP_KERNEL);
+ if (!micsupp)
+ return -ENOMEM;
+
+ micsupp->regmap = madera->regmap;
+ micsupp->dapm = &madera->dapm;
+ micsupp->dev = madera->dev;
+ micsupp->init_data = arizona_micsupp_ext_default;
+
+ return arizona_micsupp_common_init(pdev, micsupp, &madera_micsupp,
+ &madera->pdata.micvdd);
+}
+
static struct platform_driver arizona_micsupp_driver = {
.probe = arizona_micsupp_probe,
.driver = {
@@ -328,10 +372,35 @@ static int arizona_micsupp_probe(struct platform_device *pdev)
},
};

-module_platform_driver(arizona_micsupp_driver);
+static struct platform_driver madera_micsupp_driver = {
+ .probe = madera_micsupp_probe,
+ .driver = {
+ .name = "madera-micsupp",
+ },
+};
+
+static struct platform_driver * const arizona_micsupp_drivers[] = {
+ &arizona_micsupp_driver,
+ &madera_micsupp_driver,
+};
+
+static int __init arizona_micsupp_init(void)
+{
+ return platform_register_drivers(arizona_micsupp_drivers,
+ ARRAY_SIZE(arizona_micsupp_drivers));
+}
+module_init(arizona_micsupp_init);
+
+static void __exit arizona_micsupp_exit(void)
+{
+ platform_unregister_drivers(arizona_micsupp_drivers,
+ ARRAY_SIZE(arizona_micsupp_drivers));
+}
+module_exit(arizona_micsupp_exit);

/* Module information */
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_DESCRIPTION("Arizona microphone supply driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:arizona-micsupp");
+MODULE_ALIAS("platform:madera-micsupp");
--
1.9.1