Contributors: 9
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Mark Brown |
369 |
74.25% |
17 |
68.00% |
| Charles Keepax |
86 |
17.30% |
1 |
4.00% |
| Gustavo A. R. Silva |
21 |
4.23% |
1 |
4.00% |
| Uwe Kleine-König |
9 |
1.81% |
1 |
4.00% |
| Paul Gortmaker |
5 |
1.01% |
1 |
4.00% |
| Thomas Gleixner |
2 |
0.40% |
1 |
4.00% |
| Linus Torvalds (pre-git) |
2 |
0.40% |
1 |
4.00% |
| Jingoo Han |
2 |
0.40% |
1 |
4.00% |
| Linus Torvalds |
1 |
0.20% |
1 |
4.00% |
| Total |
497 |
|
25 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* wm831x-i2c.c -- I2C access for Wolfson WM831x PMICs
*
* Copyright 2009,2010 Wolfson Microelectronics PLC.
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/mfd/core.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/mfd/wm831x/core.h>
#include <linux/mfd/wm831x/pdata.h>
static int wm831x_i2c_probe(struct i2c_client *i2c)
{
const struct i2c_device_id *id = i2c_client_get_device_id(i2c);
struct wm831x_pdata *pdata = dev_get_platdata(&i2c->dev);
const struct of_device_id *of_id;
struct wm831x *wm831x;
enum wm831x_parent type;
int ret;
if (i2c->dev.of_node) {
of_id = of_match_device(wm831x_of_match, &i2c->dev);
if (!of_id) {
dev_err(&i2c->dev, "Failed to match device\n");
return -ENODEV;
}
type = (enum wm831x_parent)of_id->data;
} else {
type = (enum wm831x_parent)id->driver_data;
}
wm831x = devm_kzalloc(&i2c->dev, sizeof(struct wm831x), GFP_KERNEL);
if (wm831x == NULL)
return -ENOMEM;
i2c_set_clientdata(i2c, wm831x);
wm831x->dev = &i2c->dev;
wm831x->type = type;
wm831x->regmap = devm_regmap_init_i2c(i2c, &wm831x_regmap_config);
if (IS_ERR(wm831x->regmap)) {
ret = PTR_ERR(wm831x->regmap);
dev_err(wm831x->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
if (pdata)
memcpy(&wm831x->pdata, pdata, sizeof(*pdata));
return wm831x_device_init(wm831x, i2c->irq);
}
static int wm831x_i2c_suspend(struct device *dev)
{
struct wm831x *wm831x = dev_get_drvdata(dev);
return wm831x_device_suspend(wm831x);
}
static int wm831x_i2c_poweroff(struct device *dev)
{
struct wm831x *wm831x = dev_get_drvdata(dev);
wm831x_device_shutdown(wm831x);
return 0;
}
static const struct i2c_device_id wm831x_i2c_id[] = {
{ "wm8310", WM8310 },
{ "wm8311", WM8311 },
{ "wm8312", WM8312 },
{ "wm8320", WM8320 },
{ "wm8321", WM8321 },
{ "wm8325", WM8325 },
{ "wm8326", WM8326 },
{ }
};
static const struct dev_pm_ops wm831x_pm_ops = {
.suspend = wm831x_i2c_suspend,
.poweroff = wm831x_i2c_poweroff,
};
static struct i2c_driver wm831x_i2c_driver = {
.driver = {
.name = "wm831x",
.pm = &wm831x_pm_ops,
.of_match_table = of_match_ptr(wm831x_of_match),
.suppress_bind_attrs = true,
},
.probe_new = wm831x_i2c_probe,
.id_table = wm831x_i2c_id,
};
static int __init wm831x_i2c_init(void)
{
int ret;
ret = i2c_add_driver(&wm831x_i2c_driver);
if (ret != 0)
pr_err("Failed to register wm831x I2C driver: %d\n", ret);
return ret;
}
subsys_initcall(wm831x_i2c_init);