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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/input/misc/adxl34x-i2c.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/input/misc/adxl34x-i2c.c')
-rw-r--r--kernel/drivers/input/misc/adxl34x-i2c.c153
1 files changed, 153 insertions, 0 deletions
diff --git a/kernel/drivers/input/misc/adxl34x-i2c.c b/kernel/drivers/input/misc/adxl34x-i2c.c
new file mode 100644
index 000000000..470bfd6f0
--- /dev/null
+++ b/kernel/drivers/input/misc/adxl34x-i2c.c
@@ -0,0 +1,153 @@
+/*
+ * ADLX345/346 Three-Axis Digital Accelerometers (I2C Interface)
+ *
+ * Enter bugs at http://blackfin.uclinux.org/
+ *
+ * Copyright (C) 2009 Michael Hennerich, Analog Devices Inc.
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/input.h> /* BUS_I2C */
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/pm.h>
+#include "adxl34x.h"
+
+static int adxl34x_smbus_read(struct device *dev, unsigned char reg)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int adxl34x_smbus_write(struct device *dev,
+ unsigned char reg, unsigned char val)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+
+ return i2c_smbus_write_byte_data(client, reg, val);
+}
+
+static int adxl34x_smbus_read_block(struct device *dev,
+ unsigned char reg, int count,
+ void *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+
+ return i2c_smbus_read_i2c_block_data(client, reg, count, buf);
+}
+
+static int adxl34x_i2c_read_block(struct device *dev,
+ unsigned char reg, int count,
+ void *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ int ret;
+
+ ret = i2c_master_send(client, &reg, 1);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_master_recv(client, buf, count);
+ if (ret < 0)
+ return ret;
+
+ if (ret != count)
+ return -EIO;
+
+ return 0;
+}
+
+static const struct adxl34x_bus_ops adxl34x_smbus_bops = {
+ .bustype = BUS_I2C,
+ .write = adxl34x_smbus_write,
+ .read = adxl34x_smbus_read,
+ .read_block = adxl34x_smbus_read_block,
+};
+
+static const struct adxl34x_bus_ops adxl34x_i2c_bops = {
+ .bustype = BUS_I2C,
+ .write = adxl34x_smbus_write,
+ .read = adxl34x_smbus_read,
+ .read_block = adxl34x_i2c_read_block,
+};
+
+static int adxl34x_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct adxl34x *ac;
+ int error;
+
+ error = i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA);
+ if (!error) {
+ dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
+ return -EIO;
+ }
+
+ ac = adxl34x_probe(&client->dev, client->irq, false,
+ i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_READ_I2C_BLOCK) ?
+ &adxl34x_smbus_bops : &adxl34x_i2c_bops);
+ if (IS_ERR(ac))
+ return PTR_ERR(ac);
+
+ i2c_set_clientdata(client, ac);
+
+ return 0;
+}
+
+static int adxl34x_i2c_remove(struct i2c_client *client)
+{
+ struct adxl34x *ac = i2c_get_clientdata(client);
+
+ return adxl34x_remove(ac);
+}
+
+static int __maybe_unused adxl34x_i2c_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adxl34x *ac = i2c_get_clientdata(client);
+
+ adxl34x_suspend(ac);
+
+ return 0;
+}
+
+static int __maybe_unused adxl34x_i2c_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adxl34x *ac = i2c_get_clientdata(client);
+
+ adxl34x_resume(ac);
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(adxl34x_i2c_pm, adxl34x_i2c_suspend,
+ adxl34x_i2c_resume);
+
+static const struct i2c_device_id adxl34x_id[] = {
+ { "adxl34x", 0 },
+ { }
+};
+
+MODULE_DEVICE_TABLE(i2c, adxl34x_id);
+
+static struct i2c_driver adxl34x_driver = {
+ .driver = {
+ .name = "adxl34x",
+ .owner = THIS_MODULE,
+ .pm = &adxl34x_i2c_pm,
+ },
+ .probe = adxl34x_i2c_probe,
+ .remove = adxl34x_i2c_remove,
+ .id_table = adxl34x_id,
+};
+
+module_i2c_driver(adxl34x_driver);
+
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("ADXL345/346 Three-Axis Digital Accelerometer I2C Bus Driver");
+MODULE_LICENSE("GPL");