Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * sky81452.c	SKY81452 MFD driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright 2014 Skyworks Solutions Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Author : Gyungoh Yoo <jack.yoo@skyworksinc.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/mfd/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/mfd/sky81452.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static const struct regmap_config sky81452_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	.reg_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	.val_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static int sky81452_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 				const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	struct device *dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	const struct sky81452_platform_data *pdata = dev_get_platdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	struct mfd_cell cells[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	if (!pdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		if (!pdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 			return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	regmap = devm_regmap_init_i2c(client, &sky81452_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	if (IS_ERR(regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 		dev_err(dev, "failed to initialize.err=%ld\n", PTR_ERR(regmap));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 		return PTR_ERR(regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	i2c_set_clientdata(client, regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	memset(cells, 0, sizeof(cells));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	cells[0].name = "sky81452-backlight";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	cells[0].of_compatible = "skyworks,sky81452-backlight";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	cells[1].name = "sky81452-regulator";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	cells[1].platform_data = pdata->regulator_init_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	cells[1].pdata_size = sizeof(*pdata->regulator_init_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	ret = devm_mfd_add_devices(dev, -1, cells, ARRAY_SIZE(cells),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 				   NULL, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 		dev_err(dev, "failed to add child devices. err=%d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static const struct i2c_device_id sky81452_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	{ "sky81452" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) MODULE_DEVICE_TABLE(i2c, sky81452_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static const struct of_device_id sky81452_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	{ .compatible = "skyworks,sky81452", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) MODULE_DEVICE_TABLE(of, sky81452_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static struct i2c_driver sky81452_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 		.name = "sky81452",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 		.of_match_table = of_match_ptr(sky81452_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 	.probe = sky81452_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 	.id_table = sky81452_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) module_i2c_driver(sky81452_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) MODULE_DESCRIPTION("Skyworks SKY81452 MFD driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) MODULE_AUTHOR("Gyungoh Yoo <jack.yoo@skyworksinc.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) MODULE_LICENSE("GPL v2");