Re: [PATCH v3 3/4] iio: bmc150: Split the driver into core and i2c

From: Jonathan Cameron
Date: Sat Oct 03 2015 - 07:10:24 EST

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On 23/09/15 13:51, Tirdea, Irina wrote:
>
>
>> -----Original Message-----
>> From: Markus Pargmann [mailto:mpa@xxxxxxxxxxxxxx]
>> Sent: 21 September, 2015 13:55
>> To: Jonathan Cameron
>> Cc: Srinivas Pandruvada; Tirdea, Irina; Lars-Peter Clausen; linux-iio@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
>> kernel@xxxxxxxxxxxxxx; Markus Pargmann
>> Subject: [PATCH v3 3/4] iio: bmc150: Split the driver into core and i2c
>>
>> Signed-off-by: Markus Pargmann <mpa@xxxxxxxxxxxxxx>
>
> Tested-by: Irina Tirdea <irina.tirdea@xxxxxxxxx>
Applied with the minor modes described in my other email in response to it.
Will be in the testing branch for the autobuilders shortly.

Jonathan
>
>> ---
>> drivers/iio/accel/Kconfig | 9 +-
>> drivers/iio/accel/Makefile | 3 +-
>> .../accel/{bmc150-accel.c => bmc150-accel-core.c} | 85 ++++-------------
>> drivers/iio/accel/bmc150-accel-i2c.c | 102 +++++++++++++++++++++
>> drivers/iio/accel/bmc150-accel.h | 20 ++++
>> 5 files changed, 145 insertions(+), 74 deletions(-)
>> rename drivers/iio/accel/{bmc150-accel.c => bmc150-accel-core.c} (96%)
>> create mode 100644 drivers/iio/accel/bmc150-accel-i2c.c
>> create mode 100644 drivers/iio/accel/bmc150-accel.h
>>
>> diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
>> index 3ff2c83f7492..280635545240 100644
>> --- a/drivers/iio/accel/Kconfig
>> +++ b/drivers/iio/accel/Kconfig
>> @@ -19,21 +19,22 @@ config BMA180
>>
>> config BMC150_ACCEL
>> tristate "Bosch BMC150 Accelerometer Driver"
>> - depends on I2C
>> select IIO_BUFFER
>> select IIO_TRIGGERED_BUFFER
>> select REGMAP
>> - select REGMAP_I2C
>> + select BMC150_ACCEL_I2C if I2C
>> help
>> Say yes here to build support for the following Bosch accelerometers:
>> BMC150, BMI055, BMA250E, BMA222E, BMA255, BMA280.
>>
>> - Currently this only supports the device via an i2c interface.
>> -
>> This is a combo module with both accelerometer and magnetometer.
>> This driver is only implementing accelerometer part, which has
>> its own address and register map.
>>
>> +config BMC150_ACCEL_I2C
>> + tristate
>> + select REGMAP_I2C
>> +
>> config HID_SENSOR_ACCEL_3D
>> depends on HID_SENSOR_HUB
>> select IIO_BUFFER
>> diff --git a/drivers/iio/accel/Makefile b/drivers/iio/accel/Makefile
>> index ebd2675b2a02..5ef8bdbad092 100644
>> --- a/drivers/iio/accel/Makefile
>> +++ b/drivers/iio/accel/Makefile
>> @@ -4,7 +4,8 @@
>>
>> # When adding new entries keep the list in alphabetical order
>> obj-$(CONFIG_BMA180) += bma180.o
>> -obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel.o
>> +obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel-core.o
>> +obj-$(CONFIG_BMC150_ACCEL_I2C) += bmc150-accel-i2c.o
>> obj-$(CONFIG_HID_SENSOR_ACCEL_3D) += hid-sensor-accel-3d.o
>> obj-$(CONFIG_KXCJK1013) += kxcjk-1013.o
>> obj-$(CONFIG_KXSD9) += kxsd9.o
>> diff --git a/drivers/iio/accel/bmc150-accel.c b/drivers/iio/accel/bmc150-accel-core.c
>> similarity index 96%
>> rename from drivers/iio/accel/bmc150-accel.c
>> rename to drivers/iio/accel/bmc150-accel-core.c
>> index 425885dc6800..f492d2a4bce5 100644
>> --- a/drivers/iio/accel/bmc150-accel.c
>> +++ b/drivers/iio/accel/bmc150-accel-core.c
>> @@ -37,6 +37,8 @@
>> #include <linux/iio/triggered_buffer.h>
>> #include <linux/regmap.h>
>>
>> +#include "bmc150-accel.h"
>> +
>> #define BMC150_ACCEL_DRV_NAME "bmc150_accel"
>> #define BMC150_ACCEL_IRQ_NAME "bmc150_accel_event"
>> #define BMC150_ACCEL_GPIO_NAME "bmc150_accel_int"
>> @@ -1015,15 +1017,6 @@ static const struct iio_chan_spec bmc150_accel_channels[] =
>> static const struct iio_chan_spec bma280_accel_channels[] =
>> BMC150_ACCEL_CHANNELS(14);
>>
>> -enum {
>> - bmc150,
>> - bmi055,
>> - bma255,
>> - bma250e,
>> - bma222e,
>> - bma280,
>> -};
>> -
>> static const struct bmc150_accel_chip_info bmc150_accel_chip_info_tbl[] = {
>> [bmc150] = {
>> .name = "BMC150A",
>> @@ -1576,33 +1569,23 @@ static int bmc150_accel_chip_init(struct bmc150_accel_data *data)
>> return 0;
>> }
>>
>> -static int bmc150_accel_probe(struct i2c_client *client,
>> - const struct i2c_device_id *id)
>> +int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
>> + const char *name, bool block_supported)
>> {
>> struct bmc150_accel_data *data;
>> struct iio_dev *indio_dev;
>> int ret;
>> - const char *name = NULL;
>> - struct device *dev;
>>
>> - indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
>> + indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
>> if (!indio_dev)
>> return -ENOMEM;
>>
>> data = iio_priv(indio_dev);
>> - i2c_set_clientdata(client, indio_dev);
>> - data->dev = &client->dev;
>> - dev = &client->dev;
>> - data->irq = client->irq;
>> -
>> - data->regmap = devm_regmap_init_i2c(client, &bmc150_i2c_regmap_conf);
>> - if (IS_ERR(data->regmap)) {
>> - dev_err(dev, "Failed to initialize i2c regmap\n");
>> - return PTR_ERR(data->regmap);
>> - }
>> + dev_set_drvdata(dev, indio_dev);
>> + data->dev = dev;
>> + data->irq = irq;
>>
>> - if (id)
>> - name = id->name;
>> + data->regmap = regmap;
>>
>> ret = bmc150_accel_chip_init(data);
>> if (ret < 0)
>> @@ -1659,9 +1642,7 @@ static int bmc150_accel_probe(struct i2c_client *client,
>> if (ret)
>> goto err_buffer_cleanup;
>>
>> - if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) ||
>> - i2c_check_functionality(client->adapter,
>> - I2C_FUNC_SMBUS_READ_I2C_BLOCK)) {
>> + if (block_supported) {
>> indio_dev->modes |= INDIO_BUFFER_SOFTWARE;
>> indio_dev->info = &bmc150_accel_info_fifo;
>> indio_dev->buffer->attrs = bmc150_accel_fifo_attributes;
>> @@ -1670,7 +1651,7 @@ static int bmc150_accel_probe(struct i2c_client *client,
>>
>> ret = iio_device_register(indio_dev);
>> if (ret < 0) {
>> - dev_err(data->dev, "Unable to register iio device\n");
>> + dev_err(dev, "Unable to register iio device\n");
>> goto err_trigger_unregister;
>> }
>>
>> @@ -1693,10 +1674,11 @@ err_buffer_cleanup:
>>
>> return ret;
>> }
>> +EXPORT_SYMBOL_GPL(bmc150_accel_core_probe);
>>
>> -static int bmc150_accel_remove(struct i2c_client *client)
>> +int bmc150_accel_core_remove(struct device *dev)
>> {
>> - struct iio_dev *indio_dev = i2c_get_clientdata(client);
>> + struct iio_dev *indio_dev = dev_get_drvdata(dev);
>> struct bmc150_accel_data *data = iio_priv(indio_dev);
>>
>> pm_runtime_disable(data->dev);
>> @@ -1715,6 +1697,7 @@ static int bmc150_accel_remove(struct i2c_client *client)
>>
>> return 0;
>> }
>> +EXPORT_SYMBOL_GPL(bmc150_accel_core_remove);
>>
>> #ifdef CONFIG_PM_SLEEP
>> static int bmc150_accel_suspend(struct device *dev)
>> @@ -1785,48 +1768,12 @@ static int bmc150_accel_runtime_resume(struct device *dev)
>> }
>> #endif
>>
>> -static const struct dev_pm_ops bmc150_accel_pm_ops = {
>> +const struct dev_pm_ops bmc150_accel_pm_ops = {
>> SET_SYSTEM_SLEEP_PM_OPS(bmc150_accel_suspend, bmc150_accel_resume)
>> SET_RUNTIME_PM_OPS(bmc150_accel_runtime_suspend,
>> bmc150_accel_runtime_resume, NULL)
>> };
>>
>> -static const struct acpi_device_id bmc150_accel_acpi_match[] = {
>> - {"BSBA0150", bmc150},
>> - {"BMC150A", bmc150},
>> - {"BMI055A", bmi055},
>> - {"BMA0255", bma255},
>> - {"BMA250E", bma250e},
>> - {"BMA222E", bma222e},
>> - {"BMA0280", bma280},
>> - { },
>> -};
>> -MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
>> -
>> -static const struct i2c_device_id bmc150_accel_id[] = {
>> - {"bmc150_accel", bmc150},
>> - {"bmi055_accel", bmi055},
>> - {"bma255", bma255},
>> - {"bma250e", bma250e},
>> - {"bma222e", bma222e},
>> - {"bma280", bma280},
>> - {}
>> -};
>> -
>> -MODULE_DEVICE_TABLE(i2c, bmc150_accel_id);
>> -
>> -static struct i2c_driver bmc150_accel_driver = {
>> - .driver = {
>> - .name = BMC150_ACCEL_DRV_NAME,
>> - .acpi_match_table = ACPI_PTR(bmc150_accel_acpi_match),
>> - .pm = &bmc150_accel_pm_ops,
>> - },
>> - .probe = bmc150_accel_probe,
>> - .remove = bmc150_accel_remove,
>> - .id_table = bmc150_accel_id,
>> -};
>> -module_i2c_driver(bmc150_accel_driver);
>> -
>> MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>");
>> MODULE_LICENSE("GPL v2");
>> MODULE_DESCRIPTION("BMC150 accelerometer driver");
>> diff --git a/drivers/iio/accel/bmc150-accel-i2c.c b/drivers/iio/accel/bmc150-accel-i2c.c
>> new file mode 100644
>> index 000000000000..b41404ba32fc
>> --- /dev/null
>> +++ b/drivers/iio/accel/bmc150-accel-i2c.c
>> @@ -0,0 +1,102 @@
>> +/*
>> + * 3-axis accelerometer driver supporting following I2C Bosch-Sensortec chips:
>> + * - BMC150
>> + * - BMI055
>> + * - BMA255
>> + * - BMA250E
>> + * - BMA222E
>> + * - BMA280
>> + *
>> + * Copyright (c) 2014, Intel Corporation.
>> + *
>> + * This program is free software; you can redistribute it and/or modify it
>> + * under the terms and conditions of the GNU General Public License,
>> + * version 2, as published by the Free Software Foundation.
>> + *
>> + * This program is distributed in the hope it will be useful, but WITHOUT
>> + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
>> + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
>> + * more details.
>> + */
>> +
>> +#include <linux/device.h>
>> +#include <linux/mod_devicetable.h>
>> +#include <linux/i2c.h>
>> +#include <linux/module.h>
>> +#include <linux/acpi.h>
>> +#include <linux/regmap.h>
>> +
>> +#include "bmc150-accel.h"
>> +
>> +static const struct regmap_config bmc150_i2c_regmap_conf = {
>> + .reg_bits = 8,
>> + .val_bits = 8,
>> +};
>
> Just one minor comment here. You forgot to remove the definition
> for bmc150_i2c_regmap_conf from bmc150-accel-core.c. The
> definition from bmc150-accel-core.c also sets max_register, so
> you might want to add it here as well.
>
> You can keep my Tested-by tag if you only make this change.
>
> Thanks,
> Irina
>
>> +
>> +static int bmc150_accel_probe(struct i2c_client *client,
>> + const struct i2c_device_id *id)
>> +{
>> + struct regmap *regmap;
>> + const char *name = NULL;
>> + bool block_supported =
>> + i2c_check_functionality(client->adapter, I2C_FUNC_I2C) ||
>> + i2c_check_functionality(client->adapter,
>> + I2C_FUNC_SMBUS_READ_I2C_BLOCK);
>> +
>> + regmap = devm_regmap_init_i2c(client, &bmc150_i2c_regmap_conf);
>> + if (IS_ERR(regmap)) {
>> + dev_err(&client->dev, "Failed to initialize i2c regmap\n");
>> + return PTR_ERR(regmap);
>> + }
>> +
>> + if (id)
>> + name = id->name;
>> +
>> + return bmc150_accel_core_probe(&client->dev, regmap, client->irq, name,
>> + block_supported);
>> +}
>> +
>> +static int bmc150_accel_remove(struct i2c_client *client)
>> +{
>> + return bmc150_accel_core_remove(&client->dev);
>> +}
>> +
>> +static const struct acpi_device_id bmc150_accel_acpi_match[] = {
>> + {"BSBA0150", bmc150},
>> + {"BMC150A", bmc150},
>> + {"BMI055A", bmi055},
>> + {"BMA0255", bma255},
>> + {"BMA250E", bma250e},
>> + {"BMA222E", bma222e},
>> + {"BMA0280", bma280},
>> + { },
>> +};
>> +MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
>> +
>> +static const struct i2c_device_id bmc150_accel_id[] = {
>> + {"bmc150_accel", bmc150},
>> + {"bmi055_accel", bmi055},
>> + {"bma255", bma255},
>> + {"bma250e", bma250e},
>> + {"bma222e", bma222e},
>> + {"bma280", bma280},
>> + {}
>> +};
>> +
>> +MODULE_DEVICE_TABLE(i2c, bmc150_accel_id);
>> +
>> +static struct i2c_driver bmc150_accel_driver = {
>> + .driver = {
>> + .name = "bmc150_accel_i2c",
>> + .acpi_match_table = ACPI_PTR(bmc150_accel_acpi_match),
>> + .pm = &bmc150_accel_pm_ops,
>> + },
>> + .probe = bmc150_accel_probe,
>> + .remove = bmc150_accel_remove,
>> + .id_table = bmc150_accel_id,
>> +};
>> +module_i2c_driver(bmc150_accel_driver);
>> +
>> +MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>");
>> +MODULE_LICENSE("GPL v2");
>> +MODULE_DESCRIPTION("BMC150 I2C accelerometer driver");
>> diff --git a/drivers/iio/accel/bmc150-accel.h b/drivers/iio/accel/bmc150-accel.h
>> new file mode 100644
>> index 000000000000..ba0335987f94
>> --- /dev/null
>> +++ b/drivers/iio/accel/bmc150-accel.h
>> @@ -0,0 +1,20 @@
>> +#ifndef _BMC150_ACCEL_H_
>> +#define _BMC150_ACCEL_H_
>> +
>> +struct regmap;
>> +
>> +enum {
>> + bmc150,
>> + bmi055,
>> + bma255,
>> + bma250e,
>> + bma222e,
>> + bma280,
>> +};
>> +
>> +int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
>> + const char *name, bool block_supported);
>> +int bmc150_accel_core_remove(struct device *dev);
>> +extern const struct dev_pm_ops bmc150_accel_pm_ops;
>> +
>> +#endif /* _BMC150_ACCEL_H_ */
>> --
>> 2.5.1
>
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Next message: Jonathan Cameron: "Re: [PATCH v3 4/4] iio: bmc150: Add SPI driver"
Previous message: Jonathan Cameron: "Re: [PATCH v3 2/4] iio: bcm150: Remove i2c_client from private data"
In reply to: Jonathan Cameron: "Re: [PATCH v3 3/4] iio: bmc150: Split the driver into core and i2c"
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