cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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st_accel_i2c.c (4742B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * STMicroelectronics accelerometers driver
      4 *
      5 * Copyright 2012-2013 STMicroelectronics Inc.
      6 *
      7 * Denis Ciocca <denis.ciocca@st.com>
      8 */
      9
     10#include <linux/kernel.h>
     11#include <linux/module.h>
     12#include <linux/mod_devicetable.h>
     13#include <linux/acpi.h>
     14#include <linux/i2c.h>
     15#include <linux/iio/iio.h>
     16
     17#include <linux/iio/common/st_sensors_i2c.h>
     18#include "st_accel.h"
     19
     20static const struct of_device_id st_accel_of_match[] = {
     21	{
     22		/* An older compatible */
     23		.compatible = "st,lis3lv02d",
     24		.data = LIS3LV02DL_ACCEL_DEV_NAME,
     25	},
     26	{
     27		.compatible = "st,lis3lv02dl-accel",
     28		.data = LIS3LV02DL_ACCEL_DEV_NAME,
     29	},
     30	{
     31		.compatible = "st,lsm303dlh-accel",
     32		.data = LSM303DLH_ACCEL_DEV_NAME,
     33	},
     34	{
     35		.compatible = "st,lsm303dlhc-accel",
     36		.data = LSM303DLHC_ACCEL_DEV_NAME,
     37	},
     38	{
     39		.compatible = "st,lis3dh-accel",
     40		.data = LIS3DH_ACCEL_DEV_NAME,
     41	},
     42	{
     43		.compatible = "st,lsm330d-accel",
     44		.data = LSM330D_ACCEL_DEV_NAME,
     45	},
     46	{
     47		.compatible = "st,lsm330dl-accel",
     48		.data = LSM330DL_ACCEL_DEV_NAME,
     49	},
     50	{
     51		.compatible = "st,lsm330dlc-accel",
     52		.data = LSM330DLC_ACCEL_DEV_NAME,
     53	},
     54	{
     55		.compatible = "st,lis331dl-accel",
     56		.data = LIS331DL_ACCEL_DEV_NAME,
     57	},
     58	{
     59		.compatible = "st,lis331dlh-accel",
     60		.data = LIS331DLH_ACCEL_DEV_NAME,
     61	},
     62	{
     63		.compatible = "st,lsm303dl-accel",
     64		.data = LSM303DL_ACCEL_DEV_NAME,
     65	},
     66	{
     67		.compatible = "st,lsm303dlm-accel",
     68		.data = LSM303DLM_ACCEL_DEV_NAME,
     69	},
     70	{
     71		.compatible = "st,lsm330-accel",
     72		.data = LSM330_ACCEL_DEV_NAME,
     73	},
     74	{
     75		.compatible = "st,lsm303agr-accel",
     76		.data = LSM303AGR_ACCEL_DEV_NAME,
     77	},
     78	{
     79		.compatible = "st,lis2dh12-accel",
     80		.data = LIS2DH12_ACCEL_DEV_NAME,
     81	},
     82	{
     83		.compatible = "st,h3lis331dl-accel",
     84		.data = H3LIS331DL_ACCEL_DEV_NAME,
     85	},
     86	{
     87		.compatible = "st,lis3l02dq",
     88		.data = LIS3L02DQ_ACCEL_DEV_NAME,
     89	},
     90	{
     91		.compatible = "st,lng2dm-accel",
     92		.data = LNG2DM_ACCEL_DEV_NAME,
     93	},
     94	{
     95		.compatible = "st,lis2dw12",
     96		.data = LIS2DW12_ACCEL_DEV_NAME,
     97	},
     98	{
     99		.compatible = "st,lis3de",
    100		.data = LIS3DE_ACCEL_DEV_NAME,
    101	},
    102	{
    103		.compatible = "st,lis2de12",
    104		.data = LIS2DE12_ACCEL_DEV_NAME,
    105	},
    106	{
    107		.compatible = "st,lis2hh12",
    108		.data = LIS2HH12_ACCEL_DEV_NAME,
    109	},
    110	{
    111		.compatible = "st,lis302dl",
    112		.data = LIS302DL_ACCEL_DEV_NAME,
    113	},
    114	{
    115		.compatible = "silan,sc7a20",
    116		.data = SC7A20_ACCEL_DEV_NAME,
    117	},
    118	{},
    119};
    120MODULE_DEVICE_TABLE(of, st_accel_of_match);
    121
    122#ifdef CONFIG_ACPI
    123static const struct acpi_device_id st_accel_acpi_match[] = {
    124	{"SMO8840", (kernel_ulong_t)LIS2DH12_ACCEL_DEV_NAME},
    125	{"SMO8A90", (kernel_ulong_t)LNG2DM_ACCEL_DEV_NAME},
    126	{ },
    127};
    128MODULE_DEVICE_TABLE(acpi, st_accel_acpi_match);
    129#endif
    130
    131static const struct i2c_device_id st_accel_id_table[] = {
    132	{ LSM303DLH_ACCEL_DEV_NAME },
    133	{ LSM303DLHC_ACCEL_DEV_NAME },
    134	{ LIS3DH_ACCEL_DEV_NAME },
    135	{ LSM330D_ACCEL_DEV_NAME },
    136	{ LSM330DL_ACCEL_DEV_NAME },
    137	{ LSM330DLC_ACCEL_DEV_NAME },
    138	{ LIS331DLH_ACCEL_DEV_NAME },
    139	{ LSM303DL_ACCEL_DEV_NAME },
    140	{ LSM303DLM_ACCEL_DEV_NAME },
    141	{ LSM330_ACCEL_DEV_NAME },
    142	{ LSM303AGR_ACCEL_DEV_NAME },
    143	{ LIS2DH12_ACCEL_DEV_NAME },
    144	{ LIS3L02DQ_ACCEL_DEV_NAME },
    145	{ LNG2DM_ACCEL_DEV_NAME },
    146	{ H3LIS331DL_ACCEL_DEV_NAME },
    147	{ LIS331DL_ACCEL_DEV_NAME },
    148	{ LIS3LV02DL_ACCEL_DEV_NAME },
    149	{ LIS2DW12_ACCEL_DEV_NAME },
    150	{ LIS3DE_ACCEL_DEV_NAME },
    151	{ LIS2DE12_ACCEL_DEV_NAME },
    152	{ LIS2HH12_ACCEL_DEV_NAME },
    153	{ LIS302DL_ACCEL_DEV_NAME },
    154	{ SC7A20_ACCEL_DEV_NAME },
    155	{},
    156};
    157MODULE_DEVICE_TABLE(i2c, st_accel_id_table);
    158
    159static int st_accel_i2c_probe(struct i2c_client *client)
    160{
    161	const struct st_sensor_settings *settings;
    162	struct st_sensor_data *adata;
    163	struct iio_dev *indio_dev;
    164	int ret;
    165
    166	st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
    167
    168	settings = st_accel_get_settings(client->name);
    169	if (!settings) {
    170		dev_err(&client->dev, "device name %s not recognized.\n",
    171			client->name);
    172		return -ENODEV;
    173	}
    174
    175	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*adata));
    176	if (!indio_dev)
    177		return -ENOMEM;
    178
    179	adata = iio_priv(indio_dev);
    180	adata->sensor_settings = (struct st_sensor_settings *)settings;
    181
    182	ret = st_sensors_i2c_configure(indio_dev, client);
    183	if (ret < 0)
    184		return ret;
    185
    186	ret = st_sensors_power_enable(indio_dev);
    187	if (ret)
    188		return ret;
    189
    190	return st_accel_common_probe(indio_dev);
    191}
    192
    193static struct i2c_driver st_accel_driver = {
    194	.driver = {
    195		.name = "st-accel-i2c",
    196		.of_match_table = st_accel_of_match,
    197		.acpi_match_table = ACPI_PTR(st_accel_acpi_match),
    198	},
    199	.probe_new = st_accel_i2c_probe,
    200	.id_table = st_accel_id_table,
    201};
    202module_i2c_driver(st_accel_driver);
    203
    204MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
    205MODULE_DESCRIPTION("STMicroelectronics accelerometers i2c driver");
    206MODULE_LICENSE("GPL v2");
    207MODULE_IMPORT_NS(IIO_ST_SENSORS);