On 01/10/15 15:13, Ludovic Tancerel wrote: > Support for MS5637 temperature & pressure sensor > > Signed-off-by: Ludovic Tancerel <ludovic.tancerel@xxxxxxxxxxxxxxxxx> Applied, > --- > drivers/iio/pressure/Kconfig | 11 +++ > drivers/iio/pressure/Makefile | 1 + > drivers/iio/pressure/ms5637.c | 186 ++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 198 insertions(+) > create mode 100644 drivers/iio/pressure/ms5637.c > > diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig > index fa62950..dd12d52 100644 > --- a/drivers/iio/pressure/Kconfig > +++ b/drivers/iio/pressure/Kconfig > @@ -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..e3ad9d3 > --- /dev/null > +++ b/drivers/iio/pressure/ms5637.c > @@ -0,0 +1,186 @@ > +/* > + * 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_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"); > -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
