Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Ludovic Tancerel | 704 | 90.14% | 2 | 33.33% |
Manivannan Sadhasivam | 55 | 7.04% | 1 | 16.67% |
William Markezana | 14 | 1.79% | 1 | 16.67% |
Javier Martinez Canillas | 7 | 0.90% | 1 | 16.67% |
Matt Ranostay | 1 | 0.13% | 1 | 16.67% |
Total | 781 | 6 |
/* * ms5637.c - Support for Measurement-Specialties MS5637, MS5805 * MS5837 and MS8607 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 * Datasheet: * http://www.meas-spec.com/downloads/MS5805-02BA01.pdf * Datasheet: * http://www.meas-spec.com/downloads/MS5837-30BA.pdf * Datasheet: * http://www.meas-spec.com/downloads/MS8607-02BA01.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, }; 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 -EOPNOTSUPP; } 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}, {"ms5805", 0}, {"ms5837", 0}, {"ms8607-temppressure", 0}, {} }; MODULE_DEVICE_TABLE(i2c, ms5637_id); static const struct of_device_id ms5637_of_match[] = { { .compatible = "meas,ms5637", }, { .compatible = "meas,ms5805", }, { .compatible = "meas,ms5837", }, { .compatible = "meas,ms8607-temppressure", }, { }, }; MODULE_DEVICE_TABLE(of, ms5637_of_match); static struct i2c_driver ms5637_driver = { .probe = ms5637_probe, .id_table = ms5637_id, .driver = { .name = "ms5637", .of_match_table = of_match_ptr(ms5637_of_match), }, }; module_i2c_driver(ms5637_driver); MODULE_DESCRIPTION("Measurement-Specialties ms5637 temperature & pressure driver"); MODULE_AUTHOR("William Markezana <william.markezana@meas-spec.com>"); MODULE_AUTHOR("Ludovic Tancerel <ludovic.tancerel@maplehightech.com>"); MODULE_LICENSE("GPL v2");
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