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kernel/linux-rt-4.4.41/drivers/iio/accel/bmc150-accel-spi.c 2.56 KB
5113f6f70   김현기   kernel add
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  /*
   * 3-axis accelerometer driver supporting SPI Bosch-Sensortec accelerometer chip
   * Copyright © 2015 Pengutronix, Markus Pargmann <mpa@pengutronix.de>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that 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.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, see <http://www.gnu.org/licenses/>.
   */
  
  #include <linux/device.h>
  #include <linux/mod_devicetable.h>
  #include <linux/module.h>
  #include <linux/acpi.h>
  #include <linux/regmap.h>
  #include <linux/spi/spi.h>
  
  #include "bmc150-accel.h"
  
  static const struct regmap_config bmc150_spi_regmap_conf = {
  	.reg_bits = 8,
  	.val_bits = 8,
  	.max_register = 0x3f,
  };
  
  static int bmc150_accel_probe(struct spi_device *spi)
  {
  	struct regmap *regmap;
  	const struct spi_device_id *id = spi_get_device_id(spi);
  
  	regmap = devm_regmap_init_spi(spi, &bmc150_spi_regmap_conf);
  	if (IS_ERR(regmap)) {
  		dev_err(&spi->dev, "Failed to initialize spi regmap
  ");
  		return PTR_ERR(regmap);
  	}
  
  	return bmc150_accel_core_probe(&spi->dev, regmap, spi->irq, id->name,
  				       true);
  }
  
  static int bmc150_accel_remove(struct spi_device *spi)
  {
  	return bmc150_accel_core_remove(&spi->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 spi_device_id bmc150_accel_id[] = {
  	{"bmc150_accel",	bmc150},
  	{"bmi055_accel",	bmi055},
  	{"bma255",		bma255},
  	{"bma250e",		bma250e},
  	{"bma222e",		bma222e},
  	{"bma280",		bma280},
  	{}
  };
  MODULE_DEVICE_TABLE(spi, bmc150_accel_id);
  
  static struct spi_driver bmc150_accel_driver = {
  	.driver = {
  		.name	= "bmc150_accel_spi",
  		.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_spi_driver(bmc150_accel_driver);
  
  MODULE_AUTHOR("Markus Pargmann <mpa@pengutronix.de>");
  MODULE_LICENSE("GPL v2");
  MODULE_DESCRIPTION("BMC150 SPI accelerometer driver");