[PATCH 2/7] regulator: arizona-micsupp: Move pdata into a separate structure

[rf@opensource.wolfsonmicro.com (Richard Fitzgerald)]

In preparation for sharing this driver with Madera, move the pdata
for the micsupp regulator out of struct arizona_pdata into a dedicated
pdata struct for this driver. As a result the code in
arizona_micsupp_of_get_pdata() can be made independent of struct arizona.

This patch also updates the definition of struct arizona_pdata and
the use of this pdata in mach-crag6410-module.c

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
---
 MAINTAINERS                               |  1 +
 drivers/regulator/arizona-micsupp.c       | 21 +++++++++++----------
 include/linux/mfd/arizona/pdata.h         |  3 ++-
 include/linux/regulator/arizona-micsupp.h | 21 +++++++++++++++++++++
 4 files changed, 35 insertions(+), 11 deletions(-)
 create mode 100644 include/linux/regulator/arizona-micsupp.h

diff --git a/MAINTAINERS b/MAINTAINERS
index c35e0ce..6ed8ef1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13623,6 +13623,7 @@ F:	include/linux/mfd/arizona/
 F:	include/linux/mfd/wm831x/
 F:	include/linux/mfd/wm8350/
 F:	include/linux/mfd/wm8400*
+F:	include/linux/regulator/arizona*
 F:	include/linux/wm97xx.h
 F:	include/sound/wm????.h
 F:	sound/soc/codecs/arizona.?
diff --git a/drivers/regulator/arizona-micsupp.c b/drivers/regulator/arizona-micsupp.c
index 5e38861..5f8b5a7 100644
--- a/drivers/regulator/arizona-micsupp.c
+++ b/drivers/regulator/arizona-micsupp.c
@@ -30,6 +30,8 @@
 #include <linux/mfd/arizona/pdata.h>
 #include <linux/mfd/arizona/registers.h>
 
+#include <linux/regulator/arizona-micsupp.h>
+
 struct arizona_micsupp {
 	struct regulator_dev *regulator;
 	struct arizona *arizona;
@@ -199,28 +201,26 @@ static int arizona_micsupp_set_bypass(struct regulator_dev *rdev, bool ena)
 	.num_consumer_supplies = 1,
 };
 
-static int arizona_micsupp_of_get_pdata(struct device *dev,
-					struct arizona *arizona,
+static int arizona_micsupp_of_get_pdata(struct arizona_micsupp_pdata *pdata,
 					struct regulator_config *config,
 					const struct regulator_desc *desc)
 {
-	struct arizona_pdata *pdata = &arizona->pdata;
 	struct arizona_micsupp *micsupp = config->driver_data;
 	struct device_node *np;
 	struct regulator_init_data *init_data;
 
-	np = of_get_child_by_name(arizona->dev->of_node, "micvdd");
+	np = of_get_child_by_name(config->dev->of_node, "micvdd");
 
 	if (np) {
 		config->of_node = np;
 
-		init_data = of_get_regulator_init_data(dev, np, desc);
+		init_data = of_get_regulator_init_data(config->dev, np, desc);
 
 		if (init_data) {
 			init_data->consumer_supplies = &micsupp->supply;
 			init_data->num_consumer_supplies = 1;
 
-			pdata->micvdd = init_data;
+			pdata->init_data = init_data;
 		}
 	}
 
@@ -232,6 +232,7 @@ static int arizona_micsupp_probe(struct platform_device *pdev)
 	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
 	const struct regulator_desc *desc;
 	struct regulator_config config = { };
+	struct arizona_micsupp_pdata *pdata = &arizona->pdata.micvdd;
 	struct arizona_micsupp *micsupp;
 	int ret;
 
@@ -269,15 +270,15 @@ static int arizona_micsupp_probe(struct platform_device *pdev)
 
 	if (IS_ENABLED(CONFIG_OF)) {
 		if (!dev_get_platdata(arizona->dev)) {
-			ret = arizona_micsupp_of_get_pdata(&pdev->dev, arizona,
-							   &config, desc);
+			ret = arizona_micsupp_of_get_pdata(pdata, &config,
+							   desc);
 			if (ret < 0)
 				return ret;
 		}
 	}
 
-	if (arizona->pdata.micvdd)
-		config.init_data = arizona->pdata.micvdd;
+	if (pdata->init_data)
+		config.init_data = pdata->init_data;
 	else
 		config.init_data = &micsupp->init_data;
 
diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h
index 64faeef..43e875f 100644
--- a/include/linux/mfd/arizona/pdata.h
+++ b/include/linux/mfd/arizona/pdata.h
@@ -12,6 +12,7 @@
 #define _ARIZONA_PDATA_H
 
 #include <dt-bindings/mfd/arizona.h>
+#include <linux/regulator/arizona-micsupp.h>
 
 #define ARIZONA_GPN_DIR_MASK                     0x8000  /* GPN_DIR */
 #define ARIZONA_GPN_DIR_SHIFT                        15  /* GPN_DIR */
@@ -79,7 +80,7 @@ struct arizona_pdata {
 	int ldoena;     /** GPIO controlling LODENA, if any */
 
 	/** Regulator configuration for MICVDD */
-	struct regulator_init_data *micvdd;
+	struct arizona_micsupp_pdata micvdd;
 
 	/** Regulator configuration for LDO1 */
 	struct regulator_init_data *ldo1;
diff --git a/include/linux/regulator/arizona-micsupp.h b/include/linux/regulator/arizona-micsupp.h
new file mode 100644
index 0000000..6168426
--- /dev/null
+++ b/include/linux/regulator/arizona-micsupp.h
@@ -0,0 +1,21 @@
+/*
+ * Platform data for Arizona micsupp regulator
+ *
+ * Copyright 2017 Cirrus Logic
+ *
+ * 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.
+ */
+
+#ifndef ARIZONA_MICSUPP_H
+#define ARIZONA_MICSUPP_H
+
+struct regulator_init_data;
+
+struct arizona_micsupp_pdata {
+	/** Regulator configuration for micsupp */
+	const struct regulator_init_data *init_data;
+};
+
+#endif
-- 
1.9.1