forked from Minki/linux
08bf73a6f0
The only way the platform data for the SKY81452 ever gets populated is through the device tree. The MFD device is bothered with this for no reason at all. Just allocate the platform data in the driver and be happy. Cc: Gyungoh Yoo <jack.yoo@skyworksinc.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* sky81452.c SKY81452 MFD driver
|
|
*
|
|
* Copyright 2014 Skyworks Solutions Inc.
|
|
* Author : Gyungoh Yoo <jack.yoo@skyworksinc.com>
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/err.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/mfd/core.h>
|
|
#include <linux/mfd/sky81452.h>
|
|
|
|
static const struct regmap_config sky81452_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
};
|
|
|
|
static int sky81452_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct device *dev = &client->dev;
|
|
const struct sky81452_platform_data *pdata = dev_get_platdata(dev);
|
|
struct mfd_cell cells[2];
|
|
struct regmap *regmap;
|
|
int ret;
|
|
|
|
if (!pdata) {
|
|
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
|
|
if (!pdata)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
regmap = devm_regmap_init_i2c(client, &sky81452_config);
|
|
if (IS_ERR(regmap)) {
|
|
dev_err(dev, "failed to initialize.err=%ld\n", PTR_ERR(regmap));
|
|
return PTR_ERR(regmap);
|
|
}
|
|
|
|
i2c_set_clientdata(client, regmap);
|
|
|
|
memset(cells, 0, sizeof(cells));
|
|
cells[0].name = "sky81452-backlight";
|
|
cells[0].of_compatible = "skyworks,sky81452-backlight";
|
|
cells[1].name = "sky81452-regulator";
|
|
cells[1].platform_data = pdata->regulator_init_data;
|
|
cells[1].pdata_size = sizeof(*pdata->regulator_init_data);
|
|
|
|
ret = devm_mfd_add_devices(dev, -1, cells, ARRAY_SIZE(cells),
|
|
NULL, 0, NULL);
|
|
if (ret)
|
|
dev_err(dev, "failed to add child devices. err=%d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct i2c_device_id sky81452_ids[] = {
|
|
{ "sky81452" },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, sky81452_ids);
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id sky81452_of_match[] = {
|
|
{ .compatible = "skyworks,sky81452", },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, sky81452_of_match);
|
|
#endif
|
|
|
|
static struct i2c_driver sky81452_driver = {
|
|
.driver = {
|
|
.name = "sky81452",
|
|
.of_match_table = of_match_ptr(sky81452_of_match),
|
|
},
|
|
.probe = sky81452_probe,
|
|
.id_table = sky81452_ids,
|
|
};
|
|
|
|
module_i2c_driver(sky81452_driver);
|
|
|
|
MODULE_DESCRIPTION("Skyworks SKY81452 MFD driver");
|
|
MODULE_AUTHOR("Gyungoh Yoo <jack.yoo@skyworksinc.com>");
|
|
MODULE_LICENSE("GPL v2");
|