misc: add support for bmp18x chips to the bmp085 driver

The bmp18x chip family comes in an I2C respectively SPI variant.
Hence, the bmp085 driver was split to support both buses.

Tested-by: Zhengguang Guo <zhengguang.guo@bosch-sensortec.com>
Reviewed-by: Stefan Nilsson <stefan.nilsson@unixphere.com>
Signed-off-by: Eric Andersson <eric.andersson@unixphere.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 91 insertions, 0 deletions

diff --git a/drivers/misc/bmp085-i2c.c b/drivers/misc/bmp085-i2c.c
new file mode 100644
index 00000000000..9943971c13e
--- /dev/null
+++ b/drivers/misc/bmp085-i2c.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2012  Bosch Sensortec GmbH
+ * Copyright (c) 2012  Unixphere AB
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+#include "bmp085.h"
+
+#define BMP085_I2C_ADDRESS      0x77
+
+static const unsigned short normal_i2c[] = { BMP085_I2C_ADDRESS,
+                                                        I2C_CLIENT_END };
+
+static int bmp085_i2c_detect(struct i2c_client *client,
+                             struct i2c_board_info *info)
+{
+        if (client->addr != BMP085_I2C_ADDRESS)
+                return -ENODEV;
+
+        return bmp085_detect(&client->dev);
+}
+
+static int __devinit bmp085_i2c_probe(struct i2c_client *client,
+                                      const struct i2c_device_id *id)
+{
+        int err;
+        struct regmap *regmap = devm_regmap_init_i2c(client,
+                                                     &bmp085_regmap_config);
+
+        if (IS_ERR(regmap)) {
+                err = PTR_ERR(regmap);
+                dev_err(&client->dev, "Failed to init regmap: %d\n", err);
+                return err;
+        }
+
+        return bmp085_probe(&client->dev, regmap);
+}
+
+static int bmp085_i2c_remove(struct i2c_client *client)
+{
+        return bmp085_remove(&client->dev);
+}
+
+static const struct of_device_id bmp085_of_match[] = {
+        { .compatible = "bosch,bmp085", },
+        { },
+};
+MODULE_DEVICE_TABLE(of, bmp085_of_match);
+
+static const struct i2c_device_id bmp085_id[] = {
+        { BMP085_NAME, 0 },
+        { "bmp180", 0 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, bmp085_id);
+
+static struct i2c_driver bmp085_i2c_driver = {
+        .driver = {
+                .owner  = THIS_MODULE,
+                .name   = BMP085_NAME,
+                .of_match_table = bmp085_of_match
+        },
+        .id_table       = bmp085_id,
+        .probe          = bmp085_i2c_probe,
+        .remove         = __devexit_p(bmp085_i2c_remove),
+
+        .detect         = bmp085_i2c_detect,
+        .address_list   = normal_i2c
+};
+
+module_i2c_driver(bmp085_i2c_driver);
+
+MODULE_AUTHOR("Eric Andersson <eric.andersson@unixphere.com>");
+MODULE_DESCRIPTION("BMP085 I2C bus driver");
+MODULE_LICENSE("GPL");