diff options
Diffstat (limited to 'drivers/mfd/axp20x-rsb.c')
| -rw-r--r-- | drivers/mfd/axp20x-rsb.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/drivers/mfd/axp20x-rsb.c b/drivers/mfd/axp20x-rsb.c new file mode 100644 index 000000000000..28c20247c112 --- /dev/null +++ b/drivers/mfd/axp20x-rsb.c @@ -0,0 +1,80 @@ +/* + * 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. + * + * Copyright (C) 2015 Chen-Yu Tsai + * + * Author: Chen-Yu Tsai <wens@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/mfd/axp20x.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/sunxi-rsb.h> + +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; + + axp20x->dev = &rdev->dev; + axp20x->irq = rdev->irq; + dev_set_drvdata(&rdev->dev, axp20x); + + ret = axp20x_match_device(axp20x); + if (ret) + return ret; + + 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 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 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@csie.org>"); +MODULE_LICENSE("GPL v2"); |