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)  * Murata ZPA2326 I2C pressure and temperature sensor driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (c) 2016 Parrot S.A.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * Author: Gregor Boirie <gregor.boirie@parrot.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^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/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/mod_devicetable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "zpa2326.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  * read_flag_mask:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  *   - address bit 7 must be set to request a register read operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static const struct regmap_config zpa2326_regmap_i2c_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	.reg_bits       = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	.val_bits       = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	.writeable_reg  = zpa2326_isreg_writeable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	.readable_reg   = zpa2326_isreg_readable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	.precious_reg   = zpa2326_isreg_precious,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	.max_register   = ZPA2326_TEMP_OUT_H_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	.read_flag_mask = BIT(7),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	.cache_type     = REGCACHE_NONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static unsigned int zpa2326_i2c_hwid(const struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define ZPA2326_SA0(_addr)          (_addr & BIT(0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define ZPA2326_DEVICE_ID_SA0_SHIFT (1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	/* Identification register bit 1 mirrors device address bit 0. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	return (ZPA2326_DEVICE_ID |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		(ZPA2326_SA0(client->addr) << ZPA2326_DEVICE_ID_SA0_SHIFT));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static int zpa2326_probe_i2c(struct i2c_client          *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 			     const struct i2c_device_id *i2c_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	regmap = devm_regmap_init_i2c(client, &zpa2326_regmap_i2c_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	if (IS_ERR(regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 		dev_err(&client->dev, "failed to init registers map");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 		return PTR_ERR(regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	return zpa2326_probe(&client->dev, i2c_id->name, client->irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 			     zpa2326_i2c_hwid(client), regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static int zpa2326_remove_i2c(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	zpa2326_remove(&client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static const struct i2c_device_id zpa2326_i2c_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	{ "zpa2326", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	{ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) MODULE_DEVICE_TABLE(i2c, zpa2326_i2c_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static const struct of_device_id zpa2326_i2c_matches[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	{ .compatible = "murata,zpa2326" },
^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, zpa2326_i2c_matches);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static struct i2c_driver zpa2326_i2c_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 		.name           = "zpa2326-i2c",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 		.of_match_table = zpa2326_i2c_matches,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 		.pm             = ZPA2326_PM_OPS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 	.probe    = zpa2326_probe_i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 	.remove   = zpa2326_remove_i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) 	.id_table = zpa2326_i2c_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) module_i2c_driver(zpa2326_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) MODULE_AUTHOR("Gregor Boirie <gregor.boirie@parrot.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) MODULE_DESCRIPTION("I2C driver for Murata ZPA2326 pressure sensor");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) MODULE_LICENSE("GPL v2");