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![Jonathan Cameron](/assets/img/avatar_default.png)
ID seen in the wild and it is a valid ST micro ID. An offset of 1 for the device ID enum is needed when adding support for retrieving the ID from device_get_match_data() to allow detection of NULL pointer and fallback to i2c_device_id table. DSDT chunk cropped for relevant parts. Scope (_SB.PCI0.I2C5) { Device (DEV) { Name (_HID, EisaId ("SMO8B30")) // _HID: Hardware ID Name (_CID, EisaId ("SMO8B30")) // _CID: Compatible ID Name (_UID, Zero) // _UID: Unique ID Method (_CRS, 0, NotSerialized) // _CRS: Current Resource Settings { Name (RBUF, ResourceTemplate () { I2cSerialBusV2 (0x006A, ControllerInitiated, 0x00061A80, AddressingMode7Bit, "\\_SB.PCI0.I2C5", 0x00, ResourceConsumer, , Exclusive, ) }) Return (RBUF) /* \_SB_.PCI0.I2C5.DEV_._CRS.RBUF */ } Method (ROTM, 0, NotSerialized) { Name (RBUF, Package (0x03) { "0 -1 0", "1 0 0", "0 0 1" }) Return (RBUF) /* \_SB_.PCI0.I2C5.DEV_.ROTM.RBUF */ } ... Link: https://lore.kernel.org/all/20230129182441.082f29d0@jic23-huawei/ Reported-by: Darrell Kavanagh <darrell.kavanagh@gmail.com> Tested-by: Darrell Kavanagh <darrell.kavanagh@gmail.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20230130201018.981024-2-jic23@kernel.org
191 lines
4.6 KiB
C
191 lines
4.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* STMicroelectronics st_lsm6dsx i2c driver
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*
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* Copyright 2016 STMicroelectronics Inc.
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*
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* Lorenzo Bianconi <lorenzo.bianconi@st.com>
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* Denis Ciocca <denis.ciocca@st.com>
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <linux/regmap.h>
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#include "st_lsm6dsx.h"
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static const struct regmap_config st_lsm6dsx_i2c_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 int st_lsm6dsx_i2c_probe(struct i2c_client *client)
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{
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int hw_id;
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struct regmap *regmap;
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hw_id = (kernel_ulong_t)device_get_match_data(&client->dev);
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if (!hw_id)
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hw_id = i2c_client_get_device_id(client)->driver_data;
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if (!hw_id)
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return -EINVAL;
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regmap = devm_regmap_init_i2c(client, &st_lsm6dsx_i2c_regmap_config);
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if (IS_ERR(regmap)) {
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dev_err(&client->dev, "Failed to register i2c regmap %ld\n", PTR_ERR(regmap));
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return PTR_ERR(regmap);
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}
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return st_lsm6dsx_probe(&client->dev, client->irq, hw_id, regmap);
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}
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static const struct of_device_id st_lsm6dsx_i2c_of_match[] = {
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{
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.compatible = "st,lsm6ds3",
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.data = (void *)ST_LSM6DS3_ID,
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},
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{
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.compatible = "st,lsm6ds3h",
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.data = (void *)ST_LSM6DS3H_ID,
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},
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{
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.compatible = "st,lsm6dsl",
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.data = (void *)ST_LSM6DSL_ID,
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},
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{
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.compatible = "st,lsm6dsm",
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.data = (void *)ST_LSM6DSM_ID,
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},
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{
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.compatible = "st,ism330dlc",
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.data = (void *)ST_ISM330DLC_ID,
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},
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{
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.compatible = "st,lsm6dso",
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.data = (void *)ST_LSM6DSO_ID,
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},
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{
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.compatible = "st,asm330lhh",
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.data = (void *)ST_ASM330LHH_ID,
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},
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{
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.compatible = "st,lsm6dsox",
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.data = (void *)ST_LSM6DSOX_ID,
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},
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{
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.compatible = "st,lsm6dsr",
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.data = (void *)ST_LSM6DSR_ID,
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},
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{
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.compatible = "st,lsm6ds3tr-c",
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.data = (void *)ST_LSM6DS3TRC_ID,
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},
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{
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.compatible = "st,ism330dhcx",
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.data = (void *)ST_ISM330DHCX_ID,
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},
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{
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.compatible = "st,lsm9ds1-imu",
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.data = (void *)ST_LSM9DS1_ID,
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},
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{
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.compatible = "st,lsm6ds0",
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.data = (void *)ST_LSM6DS0_ID,
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},
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{
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.compatible = "st,lsm6dsrx",
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.data = (void *)ST_LSM6DSRX_ID,
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},
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{
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.compatible = "st,lsm6dst",
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.data = (void *)ST_LSM6DST_ID,
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},
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{
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.compatible = "st,lsm6dsop",
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.data = (void *)ST_LSM6DSOP_ID,
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},
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{
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.compatible = "st,asm330lhhx",
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.data = (void *)ST_ASM330LHHX_ID,
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},
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{
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.compatible = "st,lsm6dstx",
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.data = (void *)ST_LSM6DSTX_ID,
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},
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{
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.compatible = "st,lsm6dsv",
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.data = (void *)ST_LSM6DSV_ID,
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},
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{
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.compatible = "st,lsm6dsv16x",
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.data = (void *)ST_LSM6DSV16X_ID,
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},
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{
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.compatible = "st,lsm6dso16is",
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.data = (void *)ST_LSM6DSO16IS_ID,
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},
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{
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.compatible = "st,ism330is",
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.data = (void *)ST_ISM330IS_ID,
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},
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{
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.compatible = "st,asm330lhb",
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.data = (void *)ST_ASM330LHB_ID,
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},
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{},
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};
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MODULE_DEVICE_TABLE(of, st_lsm6dsx_i2c_of_match);
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static const struct acpi_device_id st_lsm6dsx_i2c_acpi_match[] = {
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{ "SMO8B30", ST_LSM6DS3TRC_ID, },
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{}
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};
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MODULE_DEVICE_TABLE(acpi, st_lsm6dsx_i2c_acpi_match);
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static const struct i2c_device_id st_lsm6dsx_i2c_id_table[] = {
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{ ST_LSM6DS3_DEV_NAME, ST_LSM6DS3_ID },
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{ ST_LSM6DS3H_DEV_NAME, ST_LSM6DS3H_ID },
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{ ST_LSM6DSL_DEV_NAME, ST_LSM6DSL_ID },
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{ ST_LSM6DSM_DEV_NAME, ST_LSM6DSM_ID },
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{ ST_ISM330DLC_DEV_NAME, ST_ISM330DLC_ID },
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{ ST_LSM6DSO_DEV_NAME, ST_LSM6DSO_ID },
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{ ST_ASM330LHH_DEV_NAME, ST_ASM330LHH_ID },
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{ ST_LSM6DSOX_DEV_NAME, ST_LSM6DSOX_ID },
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{ ST_LSM6DSR_DEV_NAME, ST_LSM6DSR_ID },
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{ ST_LSM6DS3TRC_DEV_NAME, ST_LSM6DS3TRC_ID },
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{ ST_ISM330DHCX_DEV_NAME, ST_ISM330DHCX_ID },
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{ ST_LSM9DS1_DEV_NAME, ST_LSM9DS1_ID },
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{ ST_LSM6DS0_DEV_NAME, ST_LSM6DS0_ID },
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{ ST_LSM6DSRX_DEV_NAME, ST_LSM6DSRX_ID },
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{ ST_LSM6DST_DEV_NAME, ST_LSM6DST_ID },
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{ ST_LSM6DSOP_DEV_NAME, ST_LSM6DSOP_ID },
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{ ST_ASM330LHHX_DEV_NAME, ST_ASM330LHHX_ID },
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{ ST_LSM6DSTX_DEV_NAME, ST_LSM6DSTX_ID },
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{ ST_LSM6DSV_DEV_NAME, ST_LSM6DSV_ID },
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{ ST_LSM6DSV16X_DEV_NAME, ST_LSM6DSV16X_ID },
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{ ST_LSM6DSO16IS_DEV_NAME, ST_LSM6DSO16IS_ID },
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{ ST_ISM330IS_DEV_NAME, ST_ISM330IS_ID },
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{ ST_ASM330LHB_DEV_NAME, ST_ASM330LHB_ID },
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{},
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};
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MODULE_DEVICE_TABLE(i2c, st_lsm6dsx_i2c_id_table);
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static struct i2c_driver st_lsm6dsx_driver = {
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.driver = {
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.name = "st_lsm6dsx_i2c",
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.pm = pm_sleep_ptr(&st_lsm6dsx_pm_ops),
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.of_match_table = st_lsm6dsx_i2c_of_match,
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.acpi_match_table = st_lsm6dsx_i2c_acpi_match,
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},
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.probe_new = st_lsm6dsx_i2c_probe,
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.id_table = st_lsm6dsx_i2c_id_table,
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};
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module_i2c_driver(st_lsm6dsx_driver);
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MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
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MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
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MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i2c driver");
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MODULE_LICENSE("GPL v2");
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MODULE_IMPORT_NS(IIO_LSM6DSX);
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