Commit 6882b0ae authored by Vadim Pasternak's avatar Vadim Pasternak Committed by David S. Miller

mlxsw: Introduce support for I2C bus

Add I2C bus implementation for Mellanox Technologies Switch ASICs.
This includes command interface implementation using input / out mailboxes,
whose location is retrieved from the firmware during probe time.
Signed-off-by: default avatarVadim Pasternak <vadimp@mellanox.com>
Reviewed-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c711e27a
......@@ -29,6 +29,16 @@ config MLXSW_PCI
To compile this driver as a module, choose M here: the
module will be called mlxsw_pci.
config MLXSW_I2C
tristate "I2C bus implementation for Mellanox Technologies Switch ASICs"
depends on I2C && MLXSW_CORE
default m
---help---
This is I2C bus implementation for Mellanox Technologies Switch ASICs.
To compile this driver as a module, choose M here: the
module will be called mlxsw_i2c.
config MLXSW_SWITCHIB
tristate "Mellanox Technologies SwitchIB and SwitchIB-2 support"
depends on MLXSW_CORE && NET_SWITCHDEV
......
......@@ -3,6 +3,8 @@ mlxsw_core-objs := core.o
mlxsw_core-$(CONFIG_MLXSW_CORE_HWMON) += core_hwmon.o
obj-$(CONFIG_MLXSW_PCI) += mlxsw_pci.o
mlxsw_pci-objs := pci.o
obj-$(CONFIG_MLXSW_I2C) += mlxsw_i2c.o
mlxsw_i2c-objs := i2c.o
obj-$(CONFIG_MLXSW_SWITCHIB) += mlxsw_switchib.o
mlxsw_switchib-objs := switchib.o
obj-$(CONFIG_MLXSW_SWITCHX2) += mlxsw_switchx2.o
......
This diff is collapsed.
/*
* drivers/net/ethernet/mellanox/mlxsw/i2c.h
* Copyright (c) 2016 Mellanox Technologies. All rights reserved.
* Copyright (c) 2016 Vadim Pasternak <vadimp@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MLXSW_I2C_H
#define _MLXSW_I2C_H
#include <linux/i2c.h>
#if IS_ENABLED(CONFIG_MLXSW_I2C)
int mlxsw_i2c_driver_register(struct i2c_driver *i2c_driver);
void mlxsw_i2c_driver_unregister(struct i2c_driver *i2c_driver);
#else
static inline int
mlxsw_i2c_driver_register(struct i2c_driver *i2c_driver)
{
return -ENODEV;
}
static inline void
mlxsw_i2c_driver_unregister(struct i2c_driver *i2c_driver)
{
}
#endif
#endif
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