2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
120 lines
3.0 KiB
C
120 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Broadcom BCM590xx PMU
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*
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* Copyright 2014 Linaro Limited
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* Author: Matt Porter <mporter@linaro.org>
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*/
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/mfd/bcm590xx.h>
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#include <linux/mfd/core.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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static const struct mfd_cell bcm590xx_devs[] = {
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{
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.name = "bcm590xx-vregs",
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},
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};
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static const struct regmap_config bcm590xx_regmap_config_pri = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = BCM590XX_MAX_REGISTER_PRI,
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.cache_type = REGCACHE_RBTREE,
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};
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static const struct regmap_config bcm590xx_regmap_config_sec = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = BCM590XX_MAX_REGISTER_SEC,
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.cache_type = REGCACHE_RBTREE,
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};
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static int bcm590xx_i2c_probe(struct i2c_client *i2c_pri,
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const struct i2c_device_id *id)
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{
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struct bcm590xx *bcm590xx;
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int ret;
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bcm590xx = devm_kzalloc(&i2c_pri->dev, sizeof(*bcm590xx), GFP_KERNEL);
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if (!bcm590xx)
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return -ENOMEM;
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i2c_set_clientdata(i2c_pri, bcm590xx);
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bcm590xx->dev = &i2c_pri->dev;
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bcm590xx->i2c_pri = i2c_pri;
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bcm590xx->regmap_pri = devm_regmap_init_i2c(i2c_pri,
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&bcm590xx_regmap_config_pri);
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if (IS_ERR(bcm590xx->regmap_pri)) {
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ret = PTR_ERR(bcm590xx->regmap_pri);
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dev_err(&i2c_pri->dev, "primary regmap init failed: %d\n", ret);
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return ret;
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}
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/* Secondary I2C slave address is the base address with A(2) asserted */
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bcm590xx->i2c_sec = i2c_new_dummy(i2c_pri->adapter,
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i2c_pri->addr | BIT(2));
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if (!bcm590xx->i2c_sec) {
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dev_err(&i2c_pri->dev, "failed to add secondary I2C device\n");
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return -ENODEV;
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}
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i2c_set_clientdata(bcm590xx->i2c_sec, bcm590xx);
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bcm590xx->regmap_sec = devm_regmap_init_i2c(bcm590xx->i2c_sec,
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&bcm590xx_regmap_config_sec);
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if (IS_ERR(bcm590xx->regmap_sec)) {
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ret = PTR_ERR(bcm590xx->regmap_sec);
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dev_err(&bcm590xx->i2c_sec->dev,
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"secondary regmap init failed: %d\n", ret);
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goto err;
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}
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ret = devm_mfd_add_devices(&i2c_pri->dev, -1, bcm590xx_devs,
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ARRAY_SIZE(bcm590xx_devs), NULL, 0, NULL);
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if (ret < 0) {
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dev_err(&i2c_pri->dev, "failed to add sub-devices: %d\n", ret);
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goto err;
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}
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return 0;
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err:
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i2c_unregister_device(bcm590xx->i2c_sec);
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return ret;
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}
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static const struct of_device_id bcm590xx_of_match[] = {
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{ .compatible = "brcm,bcm59056" },
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{ }
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};
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MODULE_DEVICE_TABLE(of, bcm590xx_of_match);
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static const struct i2c_device_id bcm590xx_i2c_id[] = {
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{ "bcm59056" },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, bcm590xx_i2c_id);
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static struct i2c_driver bcm590xx_i2c_driver = {
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.driver = {
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.name = "bcm590xx",
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.of_match_table = of_match_ptr(bcm590xx_of_match),
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},
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.probe = bcm590xx_i2c_probe,
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.id_table = bcm590xx_i2c_id,
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};
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module_i2c_driver(bcm590xx_i2c_driver);
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MODULE_AUTHOR("Matt Porter <mporter@linaro.org>");
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MODULE_DESCRIPTION("BCM590xx multi-function driver");
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MODULE_LICENSE("GPL v2");
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