From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: 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 Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior 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 --- kernel/drivers/misc/ad525x_dpot-i2c.c | 121 ++++++++++++++++++++++++++++++++++ 1 file changed, 121 insertions(+) create mode 100644 kernel/drivers/misc/ad525x_dpot-i2c.c (limited to 'kernel/drivers/misc/ad525x_dpot-i2c.c') diff --git a/kernel/drivers/misc/ad525x_dpot-i2c.c b/kernel/drivers/misc/ad525x_dpot-i2c.c new file mode 100644 index 000000000..705b881e1 --- /dev/null +++ b/kernel/drivers/misc/ad525x_dpot-i2c.c @@ -0,0 +1,121 @@ +/* + * Driver for the Analog Devices digital potentiometers (I2C bus) + * + * Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#include +#include + +#include "ad525x_dpot.h" + +/* I2C bus functions */ +static int write_d8(void *client, u8 val) +{ + return i2c_smbus_write_byte(client, val); +} + +static int write_r8d8(void *client, u8 reg, u8 val) +{ + return i2c_smbus_write_byte_data(client, reg, val); +} + +static int write_r8d16(void *client, u8 reg, u16 val) +{ + return i2c_smbus_write_word_data(client, reg, val); +} + +static int read_d8(void *client) +{ + return i2c_smbus_read_byte(client); +} + +static int read_r8d8(void *client, u8 reg) +{ + return i2c_smbus_read_byte_data(client, reg); +} + +static int read_r8d16(void *client, u8 reg) +{ + return i2c_smbus_read_word_data(client, reg); +} + +static const struct ad_dpot_bus_ops bops = { + .read_d8 = read_d8, + .read_r8d8 = read_r8d8, + .read_r8d16 = read_r8d16, + .write_d8 = write_d8, + .write_r8d8 = write_r8d8, + .write_r8d16 = write_r8d16, +}; + +static int ad_dpot_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct ad_dpot_bus_data bdata = { + .client = client, + .bops = &bops, + }; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_WORD_DATA)) { + dev_err(&client->dev, "SMBUS Word Data not Supported\n"); + return -EIO; + } + + return ad_dpot_probe(&client->dev, &bdata, id->driver_data, id->name); +} + +static int ad_dpot_i2c_remove(struct i2c_client *client) +{ + return ad_dpot_remove(&client->dev); +} + +static const struct i2c_device_id ad_dpot_id[] = { + {"ad5258", AD5258_ID}, + {"ad5259", AD5259_ID}, + {"ad5251", AD5251_ID}, + {"ad5252", AD5252_ID}, + {"ad5253", AD5253_ID}, + {"ad5254", AD5254_ID}, + {"ad5255", AD5255_ID}, + {"ad5241", AD5241_ID}, + {"ad5242", AD5242_ID}, + {"ad5243", AD5243_ID}, + {"ad5245", AD5245_ID}, + {"ad5246", AD5246_ID}, + {"ad5247", AD5247_ID}, + {"ad5248", AD5248_ID}, + {"ad5280", AD5280_ID}, + {"ad5282", AD5282_ID}, + {"adn2860", ADN2860_ID}, + {"ad5273", AD5273_ID}, + {"ad5161", AD5161_ID}, + {"ad5171", AD5171_ID}, + {"ad5170", AD5170_ID}, + {"ad5172", AD5172_ID}, + {"ad5173", AD5173_ID}, + {"ad5272", AD5272_ID}, + {"ad5274", AD5274_ID}, + {} +}; +MODULE_DEVICE_TABLE(i2c, ad_dpot_id); + +static struct i2c_driver ad_dpot_i2c_driver = { + .driver = { + .name = "ad_dpot", + .owner = THIS_MODULE, + }, + .probe = ad_dpot_i2c_probe, + .remove = ad_dpot_i2c_remove, + .id_table = ad_dpot_id, +}; + +module_i2c_driver(ad_dpot_i2c_driver); + +MODULE_AUTHOR("Michael Hennerich "); +MODULE_DESCRIPTION("digital potentiometer I2C bus driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("i2c:ad_dpot"); -- cgit 1.2.3-korg