forked from Minki/linux
d556e92916
Add I2C access support for Mellanox ASICs: - Virtual Protocol Interconnect switches SwitchX, SwitchX2, providing InfiniBand, Ethernet and Fibre Channel connectivity; - Infiniband switches SwitchIB, SwitchIB2: - Ethernet switch Spectrum. Example of probing activation: echo mlxsw_minimal 0x48 > /sys/bus/i2c/devices/i2c-2/new_device Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
98 lines
3.3 KiB
C
98 lines
3.3 KiB
C
/*
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* drivers/net/ethernet/mellanox/mlxsw/minimal.c
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* Copyright (c) 2016 Mellanox Technologies. All rights reserved.
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* Copyright (c) 2016 Vadim Pasternak <vadimp@mellanox.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/i2c.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/types.h>
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#include "core.h"
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#include "i2c.h"
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static const char mlxsw_minimal_driver_name[] = "mlxsw_minimal";
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static const struct mlxsw_config_profile mlxsw_minimal_config_profile;
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static struct mlxsw_driver mlxsw_minimal_driver = {
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.kind = mlxsw_minimal_driver_name,
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.priv_size = 1,
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.profile = &mlxsw_minimal_config_profile,
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};
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static const struct i2c_device_id mlxsw_minimal_i2c_id[] = {
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{ "mlxsw_minimal", 0},
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{ },
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};
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static struct i2c_driver mlxsw_minimal_i2c_driver = {
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.driver.name = "mlxsw_minimal",
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.class = I2C_CLASS_HWMON,
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.id_table = mlxsw_minimal_i2c_id,
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};
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static int __init mlxsw_minimal_module_init(void)
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{
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int err;
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err = mlxsw_core_driver_register(&mlxsw_minimal_driver);
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if (err)
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return err;
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err = mlxsw_i2c_driver_register(&mlxsw_minimal_i2c_driver);
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if (err)
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goto err_i2c_driver_register;
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return 0;
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err_i2c_driver_register:
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mlxsw_core_driver_unregister(&mlxsw_minimal_driver);
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return err;
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}
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static void __exit mlxsw_minimal_module_exit(void)
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{
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mlxsw_i2c_driver_unregister(&mlxsw_minimal_i2c_driver);
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mlxsw_core_driver_unregister(&mlxsw_minimal_driver);
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}
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module_init(mlxsw_minimal_module_init);
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module_exit(mlxsw_minimal_module_exit);
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_AUTHOR("Vadim Pasternak <vadimp@mellanox.com>");
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MODULE_DESCRIPTION("Mellanox minimal driver");
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MODULE_DEVICE_TABLE(i2c, mlxsw_minimal_i2c_id);
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