diff options
Diffstat (limited to 'drivers/iio/accel/mma7660.c')
| -rw-r--r-- | drivers/iio/accel/mma7660.c | 95 |
1 files changed, 53 insertions, 42 deletions
diff --git a/drivers/iio/accel/mma7660.c b/drivers/iio/accel/mma7660.c index 42fa57e41bdd..be3213600cf4 100644 --- a/drivers/iio/accel/mma7660.c +++ b/drivers/iio/accel/mma7660.c @@ -1,17 +1,14 @@ -/** +// SPDX-License-Identifier: GPL-2.0-only +/* * Freescale MMA7660FC 3-Axis Accelerometer * * Copyright (c) 2016, Intel Corporation. * - * This file is subject to the terms and conditions of version 2 of - * the GNU General Public License. See the file COPYING in the main - * directory of this archive for more details. - * * IIO driver for Freescale MMA7660FC; 7-bit I2C address: 0x4c. */ -#include <linux/acpi.h> #include <linux/i2c.h> +#include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> @@ -41,21 +38,6 @@ static const int mma7660_nscale = 467142857; -#define MMA7660_CHANNEL(reg, axis) { \ - .type = IIO_ACCEL, \ - .address = reg, \ - .modified = 1, \ - .channel2 = IIO_MOD_##axis, \ - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ -} - -static const struct iio_chan_spec mma7660_channels[] = { - MMA7660_CHANNEL(MMA7660_REG_XOUT, X), - MMA7660_CHANNEL(MMA7660_REG_YOUT, Y), - MMA7660_CHANNEL(MMA7660_REG_ZOUT, Z), -}; - enum mma7660_mode { MMA7660_MODE_STANDBY, MMA7660_MODE_ACTIVE @@ -65,6 +47,21 @@ struct mma7660_data { struct i2c_client *client; struct mutex lock; enum mma7660_mode mode; + struct iio_mount_matrix orientation; +}; + +static const struct iio_mount_matrix * +mma7660_get_mount_matrix(const struct iio_dev *indio_dev, + const struct iio_chan_spec *chan) +{ + struct mma7660_data *data = iio_priv(indio_dev); + + return &data->orientation; +} + +static const struct iio_chan_spec_ext_info mma7660_ext_info[] = { + IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, mma7660_get_mount_matrix), + { } }; static IIO_CONST_ATTR(in_accel_scale_available, MMA7660_SCALE_AVAIL); @@ -78,6 +75,22 @@ static const struct attribute_group mma7660_attribute_group = { .attrs = mma7660_attributes }; +#define MMA7660_CHANNEL(reg, axis) { \ + .type = IIO_ACCEL, \ + .address = reg, \ + .modified = 1, \ + .channel2 = IIO_MOD_##axis, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ + .ext_info = mma7660_ext_info, \ +} + +static const struct iio_chan_spec mma7660_channels[] = { + MMA7660_CHANNEL(MMA7660_REG_XOUT, X), + MMA7660_CHANNEL(MMA7660_REG_YOUT, Y), + MMA7660_CHANNEL(MMA7660_REG_ZOUT, Z), +}; + static int mma7660_set_mode(struct mma7660_data *data, enum mma7660_mode mode) { @@ -168,23 +181,19 @@ static int mma7660_read_raw(struct iio_dev *indio_dev, } static const struct iio_info mma7660_info = { - .driver_module = THIS_MODULE, .read_raw = mma7660_read_raw, .attrs = &mma7660_attribute_group, }; -static int mma7660_probe(struct i2c_client *client, - const struct i2c_device_id *id) +static int mma7660_probe(struct i2c_client *client) { int ret; struct iio_dev *indio_dev; struct mma7660_data *data; indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); - if (!indio_dev) { - dev_err(&client->dev, "iio allocation failed!\n"); + if (!indio_dev) return -ENOMEM; - } data = iio_priv(indio_dev); data->client = client; @@ -192,7 +201,10 @@ static int mma7660_probe(struct i2c_client *client, mutex_init(&data->lock); data->mode = MMA7660_MODE_STANDBY; - indio_dev->dev.parent = &client->dev; + ret = iio_read_mount_matrix(&client->dev, &data->orientation); + if (ret) + return ret; + indio_dev->info = &mma7660_info; indio_dev->name = MMA7660_DRIVER_NAME; indio_dev->modes = INDIO_DIRECT_MODE; @@ -212,16 +224,19 @@ static int mma7660_probe(struct i2c_client *client, return ret; } -static int mma7660_remove(struct i2c_client *client) +static void mma7660_remove(struct i2c_client *client) { struct iio_dev *indio_dev = i2c_get_clientdata(client); + int ret; iio_device_unregister(indio_dev); - return mma7660_set_mode(iio_priv(indio_dev), MMA7660_MODE_STANDBY); + ret = mma7660_set_mode(iio_priv(indio_dev), MMA7660_MODE_STANDBY); + if (ret) + dev_warn(&client->dev, "Failed to put device in stand-by mode (%pe), ignoring\n", + ERR_PTR(ret)); } -#ifdef CONFIG_PM_SLEEP static int mma7660_suspend(struct device *dev) { struct mma7660_data *data; @@ -240,16 +255,12 @@ static int mma7660_resume(struct device *dev) return mma7660_set_mode(data, MMA7660_MODE_ACTIVE); } -static SIMPLE_DEV_PM_OPS(mma7660_pm_ops, mma7660_suspend, mma7660_resume); - -#define MMA7660_PM_OPS (&mma7660_pm_ops) -#else -#define MMA7660_PM_OPS NULL -#endif +static DEFINE_SIMPLE_DEV_PM_OPS(mma7660_pm_ops, mma7660_suspend, + mma7660_resume); static const struct i2c_device_id mma7660_i2c_id[] = { - {"mma7660", 0}, - {} + { "mma7660" }, + { } }; MODULE_DEVICE_TABLE(i2c, mma7660_i2c_id); @@ -261,7 +272,7 @@ MODULE_DEVICE_TABLE(of, mma7660_of_match); static const struct acpi_device_id mma7660_acpi_id[] = { {"MMA7660", 0}, - {} + { } }; MODULE_DEVICE_TABLE(acpi, mma7660_acpi_id); @@ -269,9 +280,9 @@ MODULE_DEVICE_TABLE(acpi, mma7660_acpi_id); static struct i2c_driver mma7660_driver = { .driver = { .name = "mma7660", - .pm = MMA7660_PM_OPS, + .pm = pm_sleep_ptr(&mma7660_pm_ops), .of_match_table = mma7660_of_match, - .acpi_match_table = ACPI_PTR(mma7660_acpi_id), + .acpi_match_table = mma7660_acpi_id, }, .probe = mma7660_probe, .remove = mma7660_remove, |