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Release 4.8 drivers/iio/pressure/ms5611_spi.c

/*
 * MS5611 pressure and temperature sensor driver (SPI bus)
 *
 * Copyright (c) Tomasz Duszynski <tduszyns@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#include <linux/delay.h>
#include <linux/module.h>
#include <linux/spi/spi.h>
#include <linux/of_device.h>

#include "ms5611.h"


static int ms5611_spi_reset(struct device *dev) { u8 cmd = MS5611_RESET; struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev)); return spi_write_then_read(st->client, &cmd, 1, NULL, 0); }

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tomasz duszynskitomasz duszynski46100.00%1100.00%
Total46100.00%1100.00%


static int ms5611_spi_read_prom_word(struct device *dev, int index, u16 *word) { int ret; struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev)); ret = spi_w8r16be(st->client, MS5611_READ_PROM_WORD + (index << 1)); if (ret < 0) return ret; *word = ret; return 0; }

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tomasz duszynskitomasz duszynski68100.00%1100.00%
Total68100.00%1100.00%


static int ms5611_spi_read_adc(struct device *dev, s32 *val) { int ret; u8 buf[3] = { MS5611_READ_ADC }; struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev)); ret = spi_write_then_read(st->client, buf, 1, buf, 3); if (ret < 0) return ret; *val = (buf[0] << 16) | (buf[1] << 8) | buf[2]; return 0; }

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tomasz duszynskitomasz duszynski96100.00%1100.00%
Total96100.00%1100.00%


static int ms5611_spi_read_adc_temp_and_pressure(struct device *dev, s32 *temp, s32 *pressure) { int ret; struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev)); const struct ms5611_osr *osr = st->temp_osr; /* * Warning: &osr->cmd MUST be aligned on a word boundary since used as * 2nd argument (void*) of spi_write_then_read. */ ret = spi_write_then_read(st->client, &osr->cmd, 1, NULL, 0); if (ret < 0) return ret; usleep_range(osr->conv_usec, osr->conv_usec + (osr->conv_usec / 10UL)); ret = ms5611_spi_read_adc(dev, temp); if (ret < 0) return ret; osr = st->pressure_osr; ret = spi_write_then_read(st->client, &osr->cmd, 1, NULL, 0); if (ret < 0) return ret; usleep_range(osr->conv_usec, osr->conv_usec + (osr->conv_usec / 10UL)); return ms5611_spi_read_adc(dev, pressure); }

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tomasz duszynskitomasz duszynski12772.99%150.00%
gregor boiriegregor boirie4727.01%150.00%
Total174100.00%2100.00%


static int ms5611_spi_probe(struct spi_device *spi) { int ret; struct ms5611_state *st; struct iio_dev *indio_dev; indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st)); if (!indio_dev) return -ENOMEM; spi_set_drvdata(spi, indio_dev); spi->mode = SPI_MODE_0; spi->max_speed_hz = 20000000; spi->bits_per_word = 8; ret = spi_setup(spi); if (ret < 0) return ret; st = iio_priv(indio_dev); st->reset = ms5611_spi_reset; st->read_prom_word = ms5611_spi_read_prom_word; st->read_adc_temp_and_pressure = ms5611_spi_read_adc_temp_and_pressure; st->client = spi; return ms5611_probe(indio_dev, &spi->dev, spi_get_device_id(spi)->name, spi_get_device_id(spi)->driver_data); }

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tomasz duszynskitomasz duszynski13290.41%250.00%
daniel balutadaniel baluta74.79%125.00%
gregor boiriegregor boirie74.79%125.00%
Total146100.00%4100.00%


static int ms5611_spi_remove(struct spi_device *spi) { return ms5611_remove(spi_get_drvdata(spi)); }

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daniel balutadaniel baluta20100.00%1100.00%
Total20100.00%1100.00%

#if defined(CONFIG_OF) static const struct of_device_id ms5611_spi_matches[] = { { .compatible = "meas,ms5611" }, { .compatible = "ms5611" }, { .compatible = "meas,ms5607" }, { .compatible = "ms5607" }, { } }; MODULE_DEVICE_TABLE(of, ms5611_spi_matches); #endif static const struct spi_device_id ms5611_id[] = { { "ms5611", MS5611 }, { "ms5607", MS5607 }, { } }; MODULE_DEVICE_TABLE(spi, ms5611_id); static struct spi_driver ms5611_driver = { .driver = { .name = "ms5611", .of_match_table = of_match_ptr(ms5611_spi_matches) }, .id_table = ms5611_id, .probe = ms5611_spi_probe, .remove = ms5611_spi_remove, }; module_spi_driver(ms5611_driver); MODULE_AUTHOR("Tomasz Duszynski <tduszyns@gmail.com>"); MODULE_DESCRIPTION("MS5611 spi driver"); MODULE_LICENSE("GPL v2");

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tomasz duszynskitomasz duszynski55878.59%233.33%
gregor boiriegregor boirie12016.90%350.00%
daniel balutadaniel baluta324.51%116.67%
Total710100.00%6100.00%
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