Re: [PATCH v3 5/6] Add ms5637 meas-spec driver support

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This was a typo on "Measurement Specialties" name in previous MS5611 drivers.
I will definitely separate this into tiny additionnal patch.

Thanks,
Ludovic

Le 27 sept. 2015 à 19:57, Jonathan Cameron <jic23@xxxxxxxxxx> a écrit :

> On 25/09/15 14:56, Ludovic Tancerel wrote:
>> Support for MS5637 temperature & pressure sensor
>> 
>> Signed-off-by: Ludovic Tancerel <ludovic.tancerel@xxxxxxxxxxxxxxxxx>
> Only issue here a separate typo fix seems to have snuck in here.
> 
> All good, but should be a separate patch so please break that out for the
> next version.
> 
> Thanks,
> 
> Jonathan
>> ---
>> drivers/iio/pressure/Kconfig  |  15 +++-
>> drivers/iio/pressure/Makefile |   1 +
>> drivers/iio/pressure/ms5637.c | 187 ++++++++++++++++++++++++++++++++++++++++++
>> 3 files changed, 201 insertions(+), 2 deletions(-)
>> create mode 100644 drivers/iio/pressure/ms5637.c
>> 
>> diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig
>> index fa62950..8142cfe 100644
>> --- a/drivers/iio/pressure/Kconfig
>> +++ b/drivers/iio/pressure/Kconfig
>> @@ -53,9 +53,9 @@ config MPL3115
>>           will be called mpl3115.
>> 
>> config MS5611
>> -	tristate "Measurement Specialities MS5611 pressure sensor driver"
>> +	tristate "Measurement Specialties MS5611 pressure sensor driver"
>> 	help
>> -	  Say Y here to build support for the Measurement Specialities
>> +	  Say Y here to build support for the Measurement Specialties
>> 	  MS5611 pressure and temperature sensor.
> THis looks to have snuck into the wrong patch to me...
>> 
>> 	  To compile this driver as a module, choose M here: the module will
>> @@ -79,6 +79,17 @@ config MS5611_SPI
>> 	  To compile this driver as a module, choose M here: the module will
>> 	  be called ms5611_spi.
>> 
>> +config MS5637
>> +	tristate "Measurement Specialties MS5637 pressure & temperature sensor"
>> +	depends on I2C
>> +        select IIO_MS_SENSORS_I2C
>> +	help
>> +	  If you say yes here you get support for the Measurement Specialties
>> +	  MS5637 pressure and temperature sensor.
>> +
>> +	  This driver can also be built as a module. If so, the module will
>> +	  be called ms5637.
>> +
>> config IIO_ST_PRESS
>> 	tristate "STMicroelectronics pressure sensor Driver"
>> 	depends on (I2C || SPI_MASTER) && SYSFS
>> diff --git a/drivers/iio/pressure/Makefile b/drivers/iio/pressure/Makefile
>> index a4f98f8..46571c96 100644
>> --- a/drivers/iio/pressure/Makefile
>> +++ b/drivers/iio/pressure/Makefile
>> @@ -10,6 +10,7 @@ obj-$(CONFIG_MPL3115) += mpl3115.o
>> obj-$(CONFIG_MS5611) += ms5611_core.o
>> obj-$(CONFIG_MS5611_I2C) += ms5611_i2c.o
>> obj-$(CONFIG_MS5611_SPI) += ms5611_spi.o
>> +obj-$(CONFIG_MS5637) += ms5637.o
>> obj-$(CONFIG_IIO_ST_PRESS) += st_pressure.o
>> st_pressure-y := st_pressure_core.o
>> st_pressure-$(CONFIG_IIO_BUFFER) += st_pressure_buffer.o
>> diff --git a/drivers/iio/pressure/ms5637.c b/drivers/iio/pressure/ms5637.c
>> new file mode 100644
>> index 0000000..0dbbd4e
>> --- /dev/null
>> +++ b/drivers/iio/pressure/ms5637.c
>> @@ -0,0 +1,187 @@
>> +/*
>> + * ms5637.c - Support for Measurement-Specialties ms5637
>> + *            pressure & temperature sensor
>> + *
>> + * Copyright (c) 2015 Measurement-Specialties
>> + *
>> + * Licensed under the GPL-2.
>> + *
>> + * (7-bit I2C slave address 0x76)
>> + *
>> + * Datasheet:
>> + *  http://www.meas-spec.com/downloads/MS5637-02BA03.pdf
>> + *
>> + */
>> +#include <linux/init.h>
>> +#include <linux/device.h>
>> +#include <linux/kernel.h>
>> +#include <linux/stat.h>
>> +#include <linux/module.h>
>> +#include <linux/i2c.h>
>> +#include <linux/iio/iio.h>
>> +#include <linux/iio/sysfs.h>
>> +#include <linux/mutex.h>
>> +
>> +#include "../common/ms_sensors/ms_sensors_i2c.h"
>> +
>> +static const int ms5637_samp_freq[6] = { 960, 480, 240, 120, 60, 30 };
>> +/* String copy of the above const for readability purpose */
>> +static const char ms5637_show_samp_freq[] = "960 480 240 120 60 30";
>> +
>> +static int ms5637_read_raw(struct iio_dev *indio_dev,
>> +			   struct iio_chan_spec const *channel, int *val,
>> +			   int *val2, long mask)
>> +{
>> +	int ret;
>> +	int temperature;
>> +	unsigned int pressure;
>> +	struct ms_tp_dev *dev_data = iio_priv(indio_dev);
>> +
>> +	switch (mask) {
>> +	case IIO_CHAN_INFO_PROCESSED:
>> +		ret = ms_sensors_read_temp_and_pressure(dev_data,
>> +							&temperature,
>> +							&pressure);
>> +		if (ret)
>> +			return ret;
>> +
>> +		switch (channel->type) {
>> +		case IIO_TEMP:	/* in milli °C */
>> +			*val = temperature;
>> +
>> +			return IIO_VAL_INT;
>> +		case IIO_PRESSURE:	/* in kPa */
>> +			*val = pressure / 1000;
>> +			*val2 = (pressure % 1000) * 1000;
>> +
>> +			return IIO_VAL_INT_PLUS_MICRO;
>> +		default:
>> +			return -EINVAL;
>> +		}
>> +	case IIO_CHAN_INFO_SAMP_FREQ:
>> +		*val = ms5637_samp_freq[dev_data->res_index];
>> +
>> +		return IIO_VAL_INT;
>> +	default:
>> +		return -EINVAL;
>> +	}
>> +}
>> +
>> +static int ms5637_write_raw(struct iio_dev *indio_dev,
>> +			    struct iio_chan_spec const *chan,
>> +			    int val, int val2, long mask)
>> +{
>> +	struct ms_tp_dev *dev_data = iio_priv(indio_dev);
>> +	int i;
>> +
>> +	switch (mask) {
>> +	case IIO_CHAN_INFO_SAMP_FREQ:
>> +		i = ARRAY_SIZE(ms5637_samp_freq);
>> +		while (i-- > 0)
>> +			if (val == ms5637_samp_freq[i])
>> +				break;
>> +		if (i < 0)
>> +			return -EINVAL;
>> +		dev_data->res_index = i;
>> +
>> +		return 0;
>> +	default:
>> +		return -EINVAL;
>> +	}
>> +}
>> +
>> +static const struct iio_chan_spec ms5637_channels[] = {
>> +	{
>> +		.type = IIO_TEMP,
>> +		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
>> +		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
>> +	},
>> +	{
>> +		.type = IIO_PRESSURE,
>> +		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
>> +		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
>> +	}
>> +};
>> +
>> +static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(ms5637_show_samp_freq);
>> +
>> +static struct attribute *ms5637_attributes[] = {
>> +	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
>> +	NULL,
>> +};
>> +
>> +static const struct attribute_group ms5637_attribute_group = {
>> +	.attrs = ms5637_attributes,
>> +};
>> +
>> +static const struct iio_info ms5637_info = {
>> +	.read_raw = ms5637_read_raw,
>> +	.write_raw = ms5637_write_raw,
>> +	.attrs = &ms5637_attribute_group,
>> +	.driver_module = THIS_MODULE,
>> +};
>> +
>> +static int ms5637_probe(struct i2c_client *client,
>> +			const struct i2c_device_id *id)
>> +{
>> +	struct ms_tp_dev *dev_data;
>> +	struct iio_dev *indio_dev;
>> +	int ret;
>> +
>> +	if (!i2c_check_functionality(client->adapter,
>> +				     I2C_FUNC_SMBUS_READ_WORD_DATA |
>> +				     I2C_FUNC_SMBUS_WRITE_BYTE |
>> +				     I2C_FUNC_SMBUS_READ_I2C_BLOCK)) {
>> +		dev_err(&client->dev,
>> +			"Adapter does not support some i2c transaction\n");
>> +		return -ENODEV;
>> +	}
>> +
>> +	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*dev_data));
>> +	if (!indio_dev)
>> +		return -ENOMEM;
>> +
>> +	dev_data = iio_priv(indio_dev);
>> +	dev_data->client = client;
>> +	dev_data->res_index = 5;
>> +	mutex_init(&dev_data->lock);
>> +
>> +	indio_dev->info = &ms5637_info;
>> +	indio_dev->name = id->name;
>> +	indio_dev->dev.parent = &client->dev;
>> +	indio_dev->modes = INDIO_DIRECT_MODE;
>> +	indio_dev->channels = ms5637_channels;
>> +	indio_dev->num_channels = ARRAY_SIZE(ms5637_channels);
>> +
>> +	i2c_set_clientdata(client, indio_dev);
>> +
>> +	ret = ms_sensors_i2c_reset(client, 0x1E, 3000);
>> +	if (ret)
>> +		return ret;
>> +
>> +	ret = ms_sensors_tp_read_prom(dev_data);
>> +	if (ret)
>> +		return ret;
>> +
>> +	return devm_iio_device_register(&client->dev, indio_dev);
>> +}
>> +
>> +static const struct i2c_device_id ms5637_id[] = {
>> +	{"ms5637", 0},
>> +	{}
>> +};
>> +
>> +static struct i2c_driver ms5637_driver = {
>> +	.probe = ms5637_probe,
>> +	.id_table = ms5637_id,
>> +	.driver = {
>> +		   .name = "ms5637"
>> +		   },
>> +};
>> +
>> +module_i2c_driver(ms5637_driver);
>> +
>> +MODULE_DESCRIPTION("Measurement-Specialties ms5637 temperature & pressure driver");
>> +MODULE_AUTHOR("William Markezana <william.markezana@xxxxxxxxxxxxx>");
>> +MODULE_AUTHOR("Ludovic Tancerel <ludovic.tancerel@xxxxxxxxxxxxxxxxx>");
>> +MODULE_LICENSE("GPL v2");

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