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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a409d2b639
This prevents use of this driver with ACPI via PRP0001 and is an example of an anti pattern I'm trying to remove from IIO. Hence drop from this driver. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Gregor Boirie <gregor.boirie@parrot.com> Link: https://lore.kernel.org/r/20200910173242.621168-21-jic23@kernel.org
90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Murata ZPA2326 I2C pressure and temperature sensor driver
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*
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* Copyright (c) 2016 Parrot S.A.
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*
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* Author: Gregor Boirie <gregor.boirie@parrot.com>
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*/
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#include <linux/module.h>
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#include <linux/regmap.h>
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#include <linux/i2c.h>
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#include <linux/mod_devicetable.h>
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#include "zpa2326.h"
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/*
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* read_flag_mask:
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* - address bit 7 must be set to request a register read operation
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*/
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static const struct regmap_config zpa2326_regmap_i2c_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.writeable_reg = zpa2326_isreg_writeable,
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.readable_reg = zpa2326_isreg_readable,
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.precious_reg = zpa2326_isreg_precious,
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.max_register = ZPA2326_TEMP_OUT_H_REG,
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.read_flag_mask = BIT(7),
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.cache_type = REGCACHE_NONE,
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};
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static unsigned int zpa2326_i2c_hwid(const struct i2c_client *client)
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{
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#define ZPA2326_SA0(_addr) (_addr & BIT(0))
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#define ZPA2326_DEVICE_ID_SA0_SHIFT (1)
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/* Identification register bit 1 mirrors device address bit 0. */
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return (ZPA2326_DEVICE_ID |
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(ZPA2326_SA0(client->addr) << ZPA2326_DEVICE_ID_SA0_SHIFT));
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}
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static int zpa2326_probe_i2c(struct i2c_client *client,
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const struct i2c_device_id *i2c_id)
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{
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struct regmap *regmap;
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regmap = devm_regmap_init_i2c(client, &zpa2326_regmap_i2c_config);
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if (IS_ERR(regmap)) {
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dev_err(&client->dev, "failed to init registers map");
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return PTR_ERR(regmap);
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}
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return zpa2326_probe(&client->dev, i2c_id->name, client->irq,
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zpa2326_i2c_hwid(client), regmap);
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}
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static int zpa2326_remove_i2c(struct i2c_client *client)
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{
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zpa2326_remove(&client->dev);
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return 0;
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}
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static const struct i2c_device_id zpa2326_i2c_ids[] = {
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{ "zpa2326", 0 },
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{ },
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};
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MODULE_DEVICE_TABLE(i2c, zpa2326_i2c_ids);
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static const struct of_device_id zpa2326_i2c_matches[] = {
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{ .compatible = "murata,zpa2326" },
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{ }
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};
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MODULE_DEVICE_TABLE(of, zpa2326_i2c_matches);
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static struct i2c_driver zpa2326_i2c_driver = {
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.driver = {
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.name = "zpa2326-i2c",
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.of_match_table = zpa2326_i2c_matches,
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.pm = ZPA2326_PM_OPS,
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},
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.probe = zpa2326_probe_i2c,
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.remove = zpa2326_remove_i2c,
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.id_table = zpa2326_i2c_ids,
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};
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module_i2c_driver(zpa2326_i2c_driver);
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MODULE_AUTHOR("Gregor Boirie <gregor.boirie@parrot.com>");
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MODULE_DESCRIPTION("I2C driver for Murata ZPA2326 pressure sensor");
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MODULE_LICENSE("GPL v2");
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