83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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//
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// MFD parent driver for SY7636A chip
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//
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// Copyright (C) 2021 reMarkable AS - http://www.remarkable.com/
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//
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// Authors: Lars Ivar Miljeteig <lars.ivar.miljeteig@remarkable.com>
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// Alistair Francis <alistair@alistair23.me>
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//
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// Based on the lp87565 driver by Keerthy <j-keerthy@ti.com>
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#include <linux/interrupt.h>
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#include <linux/mfd/core.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/mfd/sy7636a.h>
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static const struct regmap_config sy7636a_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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};
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static const struct mfd_cell sy7636a_cells[] = {
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{ .name = "sy7636a-regulator", },
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{ .name = "sy7636a-temperature", },
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{ .name = "sy7636a-thermal", },
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};
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static const struct of_device_id of_sy7636a_match_table[] = {
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{ .compatible = "silergy,sy7636a", },
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{}
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};
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MODULE_DEVICE_TABLE(of, of_sy7636a_match_table);
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static int sy7636a_probe(struct i2c_client *client,
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const struct i2c_device_id *ids)
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{
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struct sy7636a *sy7636a;
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int ret;
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sy7636a = devm_kzalloc(&client->dev, sizeof(*sy7636a), GFP_KERNEL);
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if (!sy7636a)
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return -ENOMEM;
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sy7636a->dev = &client->dev;
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sy7636a->regmap = devm_regmap_init_i2c(client, &sy7636a_regmap_config);
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if (IS_ERR(sy7636a->regmap)) {
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ret = PTR_ERR(sy7636a->regmap);
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dev_err(sy7636a->dev,
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"Failed to initialize register map: %d\n", ret);
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return ret;
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}
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i2c_set_clientdata(client, sy7636a);
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ret = devm_mfd_add_devices(sy7636a->dev, PLATFORM_DEVID_AUTO,
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sy7636a_cells, ARRAY_SIZE(sy7636a_cells),
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NULL, 0, NULL);
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return 0;
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}
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static const struct i2c_device_id sy7636a_id_table[] = {
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{ "sy7636a", 0 },
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{ },
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};
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MODULE_DEVICE_TABLE(i2c, sy7636a_id_table);
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static struct i2c_driver sy7636a_driver = {
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.driver = {
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.name = "sy7636a",
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.of_match_table = of_sy7636a_match_table,
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},
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.probe = sy7636a_probe,
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.id_table = sy7636a_id_table,
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};
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module_i2c_driver(sy7636a_driver);
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MODULE_AUTHOR("Lars Ivar Miljeteig <lars.ivar.miljeteig@remarkable.com>");
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MODULE_DESCRIPTION("Silergy SY7636A Multi-Function Device Driver");
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MODULE_LICENSE("GPL v2");
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