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SubjectRe: [PATCH 5/7] regulator: arizona-ldo1: Move pdata into a separate structure
On Tue, 18 Apr 2017, Richard Fitzgerald wrote:

> 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 +--

Acked-by: Lee Jones <lee.jones@linaro.org>

> 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
>

--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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