drivers/iio/accel/bmc150-accel-spi.c

   1 /*
   2  * 3-axis accelerometer driver supporting SPI Bosch-Sensortec accelerometer chip
   3  * Copyright © 2015 Pengutronix, Markus Pargmann <mpa@pengutronix.de>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <linux/device.h>
  20 #include <linux/mod_devicetable.h>
  21 #include <linux/module.h>
  22 #include <linux/acpi.h>
  23 #include <linux/regmap.h>
  24 #include <linux/spi/spi.h>
  25
  26 #include "bmc150-accel.h"
  27
  28 static const struct regmap_config bmc150_spi_regmap_conf = {
  29         .reg_bits = 8,
  30         .val_bits = 8,
  31         .max_register = 0x3f,
  32 };
  33
  34 static int bmc150_accel_probe(struct spi_device *spi)
  35 {
  36         struct regmap *regmap;
  37         const struct spi_device_id *id = spi_get_device_id(spi);
  38
  39         regmap = devm_regmap_init_spi(spi, &bmc150_spi_regmap_conf);
  40         if (IS_ERR(regmap)) {
  41                 dev_err(&spi->dev, "Failed to initialize spi regmap\n");
  42                 return PTR_ERR(regmap);
  43         }
  44
  45         return bmc150_accel_core_probe(&spi->dev, regmap, spi->irq, id->name,
  46                                        true);
  47 }
  48
  49 static int bmc150_accel_remove(struct spi_device *spi)
  50 {
  51         return bmc150_accel_core_remove(&spi->dev);
  52 }
  53
  54 static const struct acpi_device_id bmc150_accel_acpi_match[] = {
  55         {"BSBA0150",    bmc150},
  56         {"BMC150A",     bmc150},
  57         {"BMI055A",     bmi055},
  58         {"BMA0255",     bma255},
  59         {"BMA250E",     bma250e},
  60         {"BMA222E",     bma222e},
  61         {"BMA0280",     bma280},
  62         { },
  63 };
  64 MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
  65
  66 static const struct spi_device_id bmc150_accel_id[] = {
  67         {"bmc150_accel",        bmc150},
  68         {"bmi055_accel",        bmi055},
  69         {"bma255",              bma255},
  70         {"bma250e",             bma250e},
  71         {"bma222e",             bma222e},
  72         {"bma280",              bma280},
  73         {}
  74 };
  75 MODULE_DEVICE_TABLE(spi, bmc150_accel_id);
  76
  77 static struct spi_driver bmc150_accel_driver = {
  78         .driver = {
  79                 .name   = "bmc150_accel_spi",
  80                 .acpi_match_table = ACPI_PTR(bmc150_accel_acpi_match),
  81                 .pm     = &bmc150_accel_pm_ops,
  82         },
  83         .probe          = bmc150_accel_probe,
  84         .remove         = bmc150_accel_remove,
  85         .id_table       = bmc150_accel_id,
  86 };
  87 module_spi_driver(bmc150_accel_driver);
  88
  89 MODULE_AUTHOR("Markus Pargmann <mpa@pengutronix.de>");
  90 MODULE_LICENSE("GPL v2");
  91 MODULE_DESCRIPTION("BMC150 SPI accelerometer driver");