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edddddd98c
When in spi mode, we are setting i2c disable bit in user_ctrl register. But the register is overwritten after when turning fifo on. So save user_ctrl init value and always use it when updating the register. Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
/*
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* Copyright (C) 2015 Intel Corporation Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/acpi.h>
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#include <linux/spi/spi.h>
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#include <linux/regmap.h>
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#include <linux/iio/iio.h>
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#include "inv_mpu_iio.h"
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static const struct regmap_config inv_mpu_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 inv_mpu_i2c_disable(struct iio_dev *indio_dev)
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{
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struct inv_mpu6050_state *st = iio_priv(indio_dev);
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int ret = 0;
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ret = inv_mpu6050_set_power_itg(st, true);
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if (ret)
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return ret;
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st->chip_config.user_ctrl |= INV_MPU6050_BIT_I2C_IF_DIS;
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ret = regmap_write(st->map, st->reg->user_ctrl,
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st->chip_config.user_ctrl);
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if (ret) {
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inv_mpu6050_set_power_itg(st, false);
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return ret;
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}
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return inv_mpu6050_set_power_itg(st, false);
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}
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static int inv_mpu_probe(struct spi_device *spi)
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{
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struct regmap *regmap;
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const struct spi_device_id *spi_id;
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const struct acpi_device_id *acpi_id;
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const char *name = NULL;
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enum inv_devices chip_type;
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if ((spi_id = spi_get_device_id(spi))) {
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chip_type = (enum inv_devices)spi_id->driver_data;
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name = spi_id->name;
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} else if ((acpi_id = acpi_match_device(spi->dev.driver->acpi_match_table, &spi->dev))) {
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chip_type = (enum inv_devices)acpi_id->driver_data;
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} else {
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return -ENODEV;
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}
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regmap = devm_regmap_init_spi(spi, &inv_mpu_regmap_config);
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if (IS_ERR(regmap)) {
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dev_err(&spi->dev, "Failed to register spi regmap %d\n",
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(int)PTR_ERR(regmap));
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return PTR_ERR(regmap);
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}
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return inv_mpu_core_probe(regmap, spi->irq, name,
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inv_mpu_i2c_disable, chip_type);
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}
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/*
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* device id table is used to identify what device can be
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* supported by this driver
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*/
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static const struct spi_device_id inv_mpu_id[] = {
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{"mpu6000", INV_MPU6000},
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{"mpu6500", INV_MPU6500},
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{"mpu9150", INV_MPU9150},
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{"mpu9250", INV_MPU9250},
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{"mpu9255", INV_MPU9255},
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{"icm20608", INV_ICM20608},
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{}
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};
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MODULE_DEVICE_TABLE(spi, inv_mpu_id);
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static const struct acpi_device_id inv_acpi_match[] = {
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{"INVN6000", INV_MPU6000},
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{ },
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};
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MODULE_DEVICE_TABLE(acpi, inv_acpi_match);
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static struct spi_driver inv_mpu_driver = {
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.probe = inv_mpu_probe,
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.id_table = inv_mpu_id,
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.driver = {
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.acpi_match_table = ACPI_PTR(inv_acpi_match),
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.name = "inv-mpu6000-spi",
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.pm = &inv_mpu_pmops,
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},
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};
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module_spi_driver(inv_mpu_driver);
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MODULE_AUTHOR("Adriana Reus <adriana.reus@intel.com>");
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MODULE_DESCRIPTION("Invensense device MPU6000 driver");
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MODULE_LICENSE("GPL");
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