[PATCH 5/7] regulator: arizona-ldo1: Move pdata into a separate structure

Richard Fitzgerald
2017-04-18T10:43:52Z

In preparation for sharing this driver with Madera, move the pdata
for the LDO1 regulator out of struct arizona_pdata into a dedicated
pdata struct for this driver. As a result the code in
arizona_ldo1_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>
---
arch/arm/mach-s3c64xx/mach-crag6410-module.c | 8 ++++--
drivers/regulator/arizona-ldo1.c | 39 +++++++++++++++-------------
include/linux/mfd/arizona/pdata.h | 4 +--
include/linux/regulator/arizona-ldo1.h | 24 +++++++++++++++++
4 files changed, 53 insertions(+), 22 deletions(-)
create mode 100644 include/linux/regulator/arizona-ldo1.h

diff --git a/arch/arm/mach-s3c64xx/mach-crag6410-module.c b/arch/arm/mach-s3c64xx/mach-crag6410-module.c
index ccc3ab8..ea5f216 100644
--- a/arch/arm/mach-s3c64xx/mach-crag6410-module.c
+++ b/arch/arm/mach-s3c64xx/mach-crag6410-module.c
@@ -209,7 +209,9 @@
};

static struct arizona_pdata wm5102_reva_pdata = {
- .ldoena = S3C64XX_GPN(7),
+ .ldo1 = {
+ .ldoena = S3C64XX_GPN(7),
+ },
.gpio_base = CODEC_GPIO_BASE,
.irq_flags = IRQF_TRIGGER_HIGH,
.micd_pol_gpio = CODEC_GPIO_BASE + 4,
@@ -239,7 +241,9 @@
};

static struct arizona_pdata wm5102_pdata = {
- .ldoena = S3C64XX_GPN(7),
+ .ldo1 = {
+ .ldoena = S3C64XX_GPN(7),
+ },
.gpio_base = CODEC_GPIO_BASE,
.irq_flags = IRQF_TRIGGER_HIGH,
.micd_pol_gpio = CODEC_GPIO_BASE + 2,
diff --git a/drivers/regulator/arizona-ldo1.c b/drivers/regulator/arizona-ldo1.c
index b726fa1..f5bc75a 100644
--- a/drivers/regulator/arizona-ldo1.c
+++ b/drivers/regulator/arizona-ldo1.c
@@ -25,6 +25,8 @@
#include <linux/gpio.h>
#include <linux/slab.h>

+#include <linux/regulator/arizona-ldo1.h>
+
#include <linux/mfd/arizona/core.h>
#include <linux/mfd/arizona/pdata.h>
#include <linux/mfd/arizona/registers.h>
@@ -186,20 +188,19 @@ static int arizona_ldo1_hc_get_voltage_sel(struct regulator_dev *rdev)
.num_consumer_supplies = 1,
};

-static int arizona_ldo1_of_get_pdata(struct device *dev,
- struct arizona *arizona,
+static int arizona_ldo1_of_get_pdata(struct arizona_ldo1_pdata *pdata,
struct regulator_config *config,
- const struct regulator_desc *desc)
+ const struct regulator_desc *desc,
+ bool *external_dcvdd)
{
- struct arizona_pdata *pdata = &arizona->pdata;
struct arizona_ldo1 *ldo1 = config->driver_data;
- struct device_node *np = arizona->dev->of_node;
+ struct device_node *np = config->dev->of_node;
struct device_node *init_node, *dcvdd_node;
struct regulator_init_data *init_data;

pdata->ldoena = of_get_named_gpio(np, "wlf,ldoena", 0);
if (pdata->ldoena < 0) {
- dev_warn(arizona->dev,
+ dev_warn(config->dev,
"LDOENA GPIO property missing/malformed: %d\n",
pdata->ldoena);
pdata->ldoena = 0;
@@ -213,19 +214,19 @@ static int arizona_ldo1_of_get_pdata(struct device *dev,
if (init_node) {
config->of_node = init_node;

- init_data = of_get_regulator_init_data(dev, init_node, desc);
-
+ init_data = of_get_regulator_init_data(config->dev, init_node,
+ desc);
if (init_data) {
init_data->consumer_supplies = &ldo1->supply;
init_data->num_consumer_supplies = 1;

if (dcvdd_node && dcvdd_node != init_node)
- arizona->external_dcvdd = true;
+ *external_dcvdd = true;

- pdata->ldo1 = init_data;
+ pdata->init_data = init_data;
}
} else if (dcvdd_node) {
- arizona->external_dcvdd = true;
+ *external_dcvdd = true;
}

of_node_put(dcvdd_node);
@@ -239,10 +240,9 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
const struct regulator_desc *desc;
struct regulator_config config = { };
struct arizona_ldo1 *ldo1;
+ bool external_dcvdd = false;
int ret;

- arizona->external_dcvdd = false;
-
ldo1 = devm_kzalloc(&pdev->dev, sizeof(*ldo1), GFP_KERNEL);
if (!ldo1)
return -ENOMEM;
@@ -283,17 +283,18 @@ static int arizona_ldo1_probe(struct platform_device *pdev)

if (IS_ENABLED(CONFIG_OF)) {
if (!dev_get_platdata(arizona->dev)) {
- ret = arizona_ldo1_of_get_pdata(&pdev->dev, arizona,
- &config, desc);
+ ret = arizona_ldo1_of_get_pdata(&arizona->pdata.ldo1,
+ &config, desc,
+ &external_dcvdd);
if (ret < 0)
return ret;
}
}

- config.ena_gpio = arizona->pdata.ldoena;
+ config.ena_gpio = arizona->pdata.ldo1.ldoena;

- if (arizona->pdata.ldo1)
- config.init_data = arizona->pdata.ldo1;
+ if (arizona->pdata.ldo1.init_data)
+ config.init_data = arizona->pdata.ldo1.init_data;
else
config.init_data = &ldo1->init_data;

@@ -303,6 +304,8 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
*/
if (config.init_data->num_consumer_supplies == 0)
arizona->external_dcvdd = true;
+ else
+ arizona->external_dcvdd = external_dcvdd;

ldo1->regulator = devm_regulator_register(&pdev->dev, desc, &config);

diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h
index 43e875f..bfeecf1 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-ldo1.h>
#include <linux/regulator/arizona-micsupp.h>

#define ARIZONA_GPN_DIR_MASK 0x8000 /* GPN_DIR */
@@ -77,13 +78,12 @@ struct arizona_micd_range {

struct arizona_pdata {
int reset; /** GPIO controlling /RESET, if any */
- int ldoena; /** GPIO controlling LODENA, if any */

/** Regulator configuration for MICVDD */
struct arizona_micsupp_pdata micvdd;

/** Regulator configuration for LDO1 */
- struct regulator_init_data *ldo1;
+ struct arizona_ldo1_pdata ldo1;

/** If a direct 32kHz clock is provided on an MCLK specify it here */
int clk32k_src;
diff --git a/include/linux/regulator/arizona-ldo1.h b/include/linux/regulator/arizona-ldo1.h
new file mode 100644
index 0000000..c685f12
--- /dev/null
+++ b/include/linux/regulator/arizona-ldo1.h
@@ -0,0 +1,24 @@
+/*
+ * Platform data for Arizona LDO1 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_LDO1_H
+#define ARIZONA_LDO1_H
+
+struct regulator_init_data;
+
+struct arizona_ldo1_pdata {
+ /** GPIO controlling LDOENA, if any */
+ int ldoena;
+
+ /** Regulator configuration for LDO1 */
+ const struct regulator_init_data *init_data;
+};
+
+#endif
--
1.9.1