drivers/misc/bmp085-spi.c

   1 /*
   2  * Copyright (c) 2012  Bosch Sensortec GmbH
   3  * Copyright (c) 2012  Unixphere AB
   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, write to the Free Software
  17  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19
  20 #include <linux/module.h>
  21 #include <linux/spi/spi.h>
  22 #include <linux/err.h>
  23 #include "bmp085.h"
  24
  25 static int __devinit bmp085_spi_probe(struct spi_device *client)
  26 {
  27         int err;
  28         struct regmap *regmap;
  29
  30         client->bits_per_word = 8;
  31         err = spi_setup(client);
  32         if (err < 0) {
  33                 dev_err(&client->dev, "spi_setup failed!\n");
  34                 return err;
  35         }
  36
  37         regmap = devm_regmap_init_spi(client, &bmp085_regmap_config);
  38         if (IS_ERR(regmap)) {
  39                 err = PTR_ERR(regmap);
  40                 dev_err(&client->dev, "Failed to init regmap: %d\n", err);
  41                 return err;
  42         }
  43
  44         return bmp085_probe(&client->dev, regmap);
  45 }
  46
  47 static int bmp085_spi_remove(struct spi_device *client)
  48 {
  49         return bmp085_remove(&client->dev);
  50 }
  51
  52 static const struct of_device_id bmp085_of_match[] = {
  53         { .compatible = "bosch,bmp085", },
  54         { },
  55 };
  56 MODULE_DEVICE_TABLE(of, bmp085_of_match);
  57
  58 static const struct spi_device_id bmp085_id[] = {
  59         { "bmp180", 0 },
  60         { "bmp181", 0 },
  61         { }
  62 };
  63 MODULE_DEVICE_TABLE(spi, bmp085_id);
  64
  65 static struct spi_driver bmp085_spi_driver = {
  66         .driver = {
  67                 .owner  = THIS_MODULE,
  68                 .name   = BMP085_NAME,
  69                 .of_match_table = bmp085_of_match
  70         },
  71         .id_table       = bmp085_id,
  72         .probe          = bmp085_spi_probe,
  73         .remove         = __devexit_p(bmp085_spi_remove)
  74 };
  75
  76 static int __init bmp085_spi_init(void)
  77 {
  78         return spi_register_driver(&bmp085_spi_driver);
  79 }
  80
  81 static void __exit bmp085_spi_exit(void)
  82 {
  83         spi_unregister_driver(&bmp085_spi_driver);
  84 }
  85
  86 MODULE_AUTHOR("Eric Andersson <eric.andersson@unixphere.com>");
  87 MODULE_DESCRIPTION("BMP085 SPI bus driver");
  88 MODULE_LICENSE("GPL");
  89
  90 module_init(bmp085_spi_init);
  91 module_exit(bmp085_spi_exit);