xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mfd: axp20x: Add support for RSB based AXP223 PMIC

Browse Source 
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@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Chen-Yu Tsai
2016-02-12 10:02:44 +08:00
committed by Lee Jones
parent 2260a45356
commit 02071f0f79
5 changed files with 95 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

80
drivers/mfd/axp20x-rsb.c Normal file
View File

@@ -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");