inv_mpu_spi.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3* Copyright (C) 2015 Intel Corporation Inc.
  4*/
  5#include <linux/mod_devicetable.h>
  6#include <linux/module.h>
  7#include <linux/property.h>
  8#include <linux/spi/spi.h>
  9#include <linux/regmap.h>
 10#include <linux/iio/iio.h>
 11#include "inv_mpu_iio.h"
 12
 13static const struct regmap_config inv_mpu_regmap_config = {
 14	.reg_bits = 8,
 15	.val_bits = 8,
 16};
 17
 18static int inv_mpu_i2c_disable(struct iio_dev *indio_dev)
 19{
 20	struct inv_mpu6050_state *st = iio_priv(indio_dev);
 21	int ret = 0;
 22
 23	if (st->reg->i2c_if) {
 24		ret = regmap_write(st->map, st->reg->i2c_if,
 25				   INV_ICM20602_BIT_I2C_IF_DIS);
 26	} else {
 27		st->chip_config.user_ctrl |= INV_MPU6050_BIT_I2C_IF_DIS;
 28		ret = regmap_write(st->map, st->reg->user_ctrl,
 29				   st->chip_config.user_ctrl);
 30	}
 31
 32	return ret;
 33}
 34
 35static int inv_mpu_probe(struct spi_device *spi)
 36{
 37	const void *match;
 38	struct regmap *regmap;
 39	const struct spi_device_id *spi_id;
 40	const char *name = NULL;
 41	enum inv_devices chip_type;
 42
 43	if ((spi_id = spi_get_device_id(spi))) {
 44		chip_type = (enum inv_devices)spi_id->driver_data;
 45		name = spi_id->name;
 46	} else if ((match = device_get_match_data(&spi->dev))) {
 47		chip_type = (uintptr_t)match;
 48		name = dev_name(&spi->dev);
 49	} else {
 50		return -ENODEV;
 51	}
 52
 53	regmap = devm_regmap_init_spi(spi, &inv_mpu_regmap_config);
 54	if (IS_ERR(regmap)) {
 55		dev_err(&spi->dev, "Failed to register spi regmap: %pe\n",
 56			regmap);
 57		return PTR_ERR(regmap);
 58	}
 59
 60	return inv_mpu_core_probe(regmap, spi->irq, name,
 61				  inv_mpu_i2c_disable, chip_type);
 62}
 63
 64/*
 65 * device id table is used to identify what device can be
 66 * supported by this driver
 67 */
 68static const struct spi_device_id inv_mpu_id[] = {
 69	{"mpu6000", INV_MPU6000},
 70	{"mpu6500", INV_MPU6500},
 71	{"mpu6515", INV_MPU6515},
 72	{"mpu6880", INV_MPU6880},
 73	{"mpu9250", INV_MPU9250},
 74	{"mpu9255", INV_MPU9255},
 75	{"icm20608", INV_ICM20608},
 76	{"icm20608d", INV_ICM20608D},
 77	{"icm20609", INV_ICM20609},
 78	{"icm20689", INV_ICM20689},
 79	{"icm20600", INV_ICM20600},
 80	{"icm20602", INV_ICM20602},
 81	{"icm20690", INV_ICM20690},
 82	{"iam20380", INV_IAM20380},
 83	{"iam20680", INV_IAM20680},
 84	{"iam20680hp", INV_IAM20680HP},
 85	{"iam20680ht", INV_IAM20680HT},
 86	{ }
 87};
 88
 89MODULE_DEVICE_TABLE(spi, inv_mpu_id);
 90
 91static const struct of_device_id inv_of_match[] = {
 92	{
 93		.compatible = "invensense,mpu6000",
 94		.data = (void *)INV_MPU6000
 95	},
 96	{
 97		.compatible = "invensense,mpu6500",
 98		.data = (void *)INV_MPU6500
 99	},
100	{
101		.compatible = "invensense,mpu6515",
102		.data = (void *)INV_MPU6515
103	},
104	{
105		.compatible = "invensense,mpu6880",
106		.data = (void *)INV_MPU6880
107	},
108	{
109		.compatible = "invensense,mpu9250",
110		.data = (void *)INV_MPU9250
111	},
112	{
113		.compatible = "invensense,mpu9255",
114		.data = (void *)INV_MPU9255
115	},
116	{
117		.compatible = "invensense,icm20608",
118		.data = (void *)INV_ICM20608
119	},
120	{
121		.compatible = "invensense,icm20608d",
122		.data = (void *)INV_ICM20608D
123	},
124	{
125		.compatible = "invensense,icm20609",
126		.data = (void *)INV_ICM20609
127	},
128	{
129		.compatible = "invensense,icm20689",
130		.data = (void *)INV_ICM20689
131	},
132	{
133		.compatible = "invensense,icm20600",
134		.data = (void *)INV_ICM20600
135	},
136	{
137		.compatible = "invensense,icm20602",
138		.data = (void *)INV_ICM20602
139	},
140	{
141		.compatible = "invensense,icm20690",
142		.data = (void *)INV_ICM20690
143	},
144	{
145		.compatible = "invensense,iam20380",
146		.data = (void *)INV_IAM20380
147	},
148	{
149		.compatible = "invensense,iam20680",
150		.data = (void *)INV_IAM20680
151	},
152	{
153		.compatible = "invensense,iam20680hp",
154		.data = (void *)INV_IAM20680HP
155	},
156	{
157		.compatible = "invensense,iam20680ht",
158		.data = (void *)INV_IAM20680HT
159	},
160	{ }
161};
162MODULE_DEVICE_TABLE(of, inv_of_match);
163
164static const struct acpi_device_id inv_acpi_match[] = {
165	{"INVN6000", INV_MPU6000},
166	{ }
167};
168MODULE_DEVICE_TABLE(acpi, inv_acpi_match);
169
170static struct spi_driver inv_mpu_driver = {
171	.probe		=	inv_mpu_probe,
172	.id_table	=	inv_mpu_id,
173	.driver = {
174		.of_match_table = inv_of_match,
175		.acpi_match_table = inv_acpi_match,
176		.name	=	"inv-mpu6000-spi",
177		.pm     =       pm_ptr(&inv_mpu_pmops),
178	},
179};
180
181module_spi_driver(inv_mpu_driver);
182
183MODULE_AUTHOR("Adriana Reus <adriana.reus@intel.com>");
184MODULE_DESCRIPTION("Invensense device MPU6000 driver");
185MODULE_LICENSE("GPL");
186MODULE_IMPORT_NS("IIO_MPU6050");