[PATCH v4 3/6] mfd: axp20x: Add support for RSB based AXP223 PMIC
Andy Shevchenko
andy.shevchenko at gmail.com
Tue Nov 24 01:38:34 PST 2015
On Tue, Nov 24, 2015 at 5:48 AM, Chen-Yu Tsai <wens at csie.org> wrote:
> The AXP223 is a new PMIC commonly paired with Allwinner A23/A33 SoCs.
> It is functionally identical to AXP221; only the regulator default
> voltage/status and the external host interface are different.
>
> Signed-off-by: Chen-Yu Tsai <wens at csie.org>
> ---
> drivers/mfd/Kconfig | 11 ++++++
> drivers/mfd/Makefile | 1 +
> drivers/mfd/axp20x-rsb.c | 93 ++++++++++++++++++++++++++++++++++++++++++++++
> drivers/mfd/axp20x.c | 2 +
> include/linux/mfd/axp20x.h | 1 +
> 5 files changed, 108 insertions(+)
> create mode 100644 drivers/mfd/axp20x-rsb.c
>
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 804cd3dcce32..13c565103e96 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -107,6 +107,17 @@ config MFD_AXP20X_I2C
> components like regulators or the PEK (Power Enable Key) under the
> corresponding menus.
>
> +config MFD_AXP20X_RSB
> + tristate "X-Powers AXP series PMICs with RSB"
> + select MFD_AXP20X
> + depends on SUNXI_RSB
> + help
> + If you say Y here you get support for the X-Powers AXP series power
> + management ICs (PMICs) controlled with RSB.
> + This driver include only the core APIs. You have to select individual
> + components like regulators or the PEK (Power Enable Key) under the
> + corresponding menus.
> +
> config MFD_CROS_EC
> tristate "ChromeOS Embedded Controller"
> select MFD_CORE
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index a6913007d667..caea6637d5e8 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -108,6 +108,7 @@ obj-$(CONFIG_MFD_DA9052_SPI) += da9052-spi.o
> obj-$(CONFIG_MFD_DA9052_I2C) += da9052-i2c.o
> obj-$(CONFIG_MFD_AXP20X) += axp20x.o
> obj-$(CONFIG_MFD_AXP20X_I2C) += axp20x-i2c.o
> +obj-$(CONFIG_MFD_AXP20X_RSB) += axp20x-rsb.o
>
> obj-$(CONFIG_MFD_LP3943) += lp3943.o
> obj-$(CONFIG_MFD_LP8788) += lp8788.o lp8788-irq.o
> diff --git a/drivers/mfd/axp20x-rsb.c b/drivers/mfd/axp20x-rsb.c
> new file mode 100644
> index 000000000000..3ea0d5db37d0
> --- /dev/null
> +++ b/drivers/mfd/axp20x-rsb.c
> @@ -0,0 +1,93 @@
> +/*
> + * axp20x-rsb.c - RSB driver for the X-Powers' Power Management ICs
> + *
> + * AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC
> + * converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature
> + * as well as configurable GPIOs.
> + *
> + * This driver supports the RSB variants.
> + *
> + * Author: Chen-Yu Tsai <wens at csie.org>
> + *
> + * 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.
> + */
> +
> +#include <linux/acpi.h>
> +#include <linux/err.h>
> +#include <linux/module.h>
> +#include <linux/mfd/axp20x.h>
> +#include <linux/of_device.h>
> +#include <linux/regmap.h>
> +#include <linux/slab.h>
> +#include <linux/sunxi-rsb.h>
> +
> +static const struct of_device_id axp20x_rsb_of_match[] = {
> + { .compatible = "x-powers,axp223", .data = (void *) AXP223_ID },
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, axp20x_rsb_of_match);
> +
> +static int axp20x_rsb_match_device(struct axp20x_dev *axp20x,
> + struct device *dev)
Same idea, drop away second parameter.
> +{
> + const struct of_device_id *of_id;
> +
> + of_id = of_match_device(axp20x_rsb_of_match, dev);
> + if (!of_id) {
> + dev_err(dev, "Unable to match OF ID\n");
> + return -ENODEV;
> + }
> + axp20x->variant = (long) of_id->data;
Extra space.
> +
> + return axp20x_match_device(axp20x, dev);
> +}
> +
> +static int axp20x_rsb_probe(struct sunxi_rsb_device *rdev)
> +{
> + struct axp20x_dev *axp20x;
> + int ret;
> +
> + axp20x = devm_kzalloc(&rdev->dev, sizeof(*axp20x), GFP_KERNEL);
> + if (!axp20x)
> + return -ENOMEM;
> +
> + ret = axp20x_rsb_match_device(axp20x, &rdev->dev);
> + if (ret)
> + return ret;
> +
> + axp20x->dev = &rdev->dev;
> + axp20x->irq = rdev->irq;
> + sunxi_rsb_device_set_drvdata(rdev, axp20x);
> +
> + axp20x->regmap = devm_regmap_init_sunxi_rsb(rdev, axp20x->regmap_cfg);
> + if (IS_ERR(axp20x->regmap)) {
> + ret = PTR_ERR(axp20x->regmap);
> + dev_err(&rdev->dev, "regmap init failed: %d\n", ret);
> + return ret;
> + }
> +
> + return axp20x_device_probe(axp20x);
> +}
> +
> +static int axp20x_rsb_remove(struct sunxi_rsb_device *rdev)
> +{
> + struct axp20x_dev *axp20x = sunxi_rsb_device_get_drvdata(rdev);
> +
> + return axp20x_device_remove(axp20x);
> +}
> +
> +static struct sunxi_rsb_driver axp20x_rsb_driver = {
> + .driver = {
> + .name = "axp20x-rsb",
> + .of_match_table = of_match_ptr(axp20x_rsb_of_match),
> + },
> + .probe = axp20x_rsb_probe,
> + .remove = axp20x_rsb_remove,
> +};
> +module_sunxi_rsb_driver(axp20x_rsb_driver);
> +
> +MODULE_DESCRIPTION("PMIC MFD sunXi RSB driver for AXP20X");
> +MODULE_AUTHOR("Chen-Yu Tsai <wens at csie.org>");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
> index 01f139856bf1..8057000da9d6 100644
> --- a/drivers/mfd/axp20x.c
> +++ b/drivers/mfd/axp20x.c
> @@ -32,6 +32,7 @@ static const char * const axp20x_model_names[] = {
> "AXP202",
> "AXP209",
> "AXP221",
> + "AXP223",
> "AXP288",
> };
>
> @@ -595,6 +596,7 @@ int axp20x_match_device(struct axp20x_dev *axp20x, struct device *dev)
> axp20x->regmap_irq_chip = &axp20x_regmap_irq_chip;
> break;
> case AXP221_ID:
> + case AXP223_ID:
> axp20x->nr_cells = ARRAY_SIZE(axp22x_cells);
> axp20x->cells = axp22x_cells;
> axp20x->regmap_cfg = &axp22x_regmap_config;
> diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
> index 908f97f6e2d7..fef8dea18e66 100644
> --- a/include/linux/mfd/axp20x.h
> +++ b/include/linux/mfd/axp20x.h
> @@ -18,6 +18,7 @@ enum {
> AXP202_ID,
> AXP209_ID,
> AXP221_ID,
> + AXP223_ID,
> AXP288_ID,
> NR_AXP20X_VARIANTS,
> };
> --
> 2.6.2
>
> --
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--
With Best Regards,
Andy Shevchenko
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