diff options
author | Vadim Pasternak <vadimp@mellanox.com> | 2016-11-16 15:20:46 +0100 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2016-11-16 23:29:04 -0500 |
commit | d556e929164fdc6c94848374fc98c40852f97adb (patch) | |
tree | 88f89bd19d4116997ddb9632f55412b5e97145ee | |
parent | 4ebd00bc5ffc747f07fe23b1993adc9e6220ba2f (diff) | |
download | linux-d556e929164fdc6c94848374fc98c40852f97adb.tar.bz2 |
mlxsw: minimal: Add I2C support for Mellanox ASICs
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>
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/Kconfig | 11 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/Makefile | 2 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/minimal.c | 97 |
3 files changed, 110 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/Kconfig b/drivers/net/ethernet/mellanox/mlxsw/Kconfig index f0bc7b3a99e4..c9822e653b93 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/Kconfig +++ b/drivers/net/ethernet/mellanox/mlxsw/Kconfig @@ -79,3 +79,14 @@ config MLXSW_SPECTRUM_DCB ---help--- Say Y here if you want to use Data Center Bridging (DCB) in the driver. + +config MLXSW_MINIMAL + tristate "Mellanox Technologies minimal I2C support" + depends on MLXSW_CORE && MLXSW_I2C + default m + ---help--- + This driver supports I2C access for Mellanox Technologies Switch + ASICs. + + To compile this driver as a module, choose M here: the + module will be called mlxsw_minimal. diff --git a/drivers/net/ethernet/mellanox/mlxsw/Makefile b/drivers/net/ethernet/mellanox/mlxsw/Makefile index 4623edec963a..272294244ab1 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/Makefile +++ b/drivers/net/ethernet/mellanox/mlxsw/Makefile @@ -14,3 +14,5 @@ mlxsw_spectrum-objs := spectrum.o spectrum_buffers.o \ spectrum_switchdev.o spectrum_router.o \ spectrum_kvdl.o mlxsw_spectrum-$(CONFIG_MLXSW_SPECTRUM_DCB) += spectrum_dcb.o +obj-$(CONFIG_MLXSW_MINIMAL) += mlxsw_minimal.o +mlxsw_minimal-objs := minimal.o diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c new file mode 100644 index 000000000000..3dd16267b76c --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c @@ -0,0 +1,97 @@ +/* + * drivers/net/ethernet/mellanox/mlxsw/minimal.c + * 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. + */ + +#include <linux/i2c.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mod_devicetable.h> +#include <linux/types.h> + +#include "core.h" +#include "i2c.h" + +static const char mlxsw_minimal_driver_name[] = "mlxsw_minimal"; + +static const struct mlxsw_config_profile mlxsw_minimal_config_profile; + +static struct mlxsw_driver mlxsw_minimal_driver = { + .kind = mlxsw_minimal_driver_name, + .priv_size = 1, + .profile = &mlxsw_minimal_config_profile, +}; + +static const struct i2c_device_id mlxsw_minimal_i2c_id[] = { + { "mlxsw_minimal", 0}, + { }, +}; + +static struct i2c_driver mlxsw_minimal_i2c_driver = { + .driver.name = "mlxsw_minimal", + .class = I2C_CLASS_HWMON, + .id_table = mlxsw_minimal_i2c_id, +}; + +static int __init mlxsw_minimal_module_init(void) +{ + int err; + + err = mlxsw_core_driver_register(&mlxsw_minimal_driver); + if (err) + return err; + + err = mlxsw_i2c_driver_register(&mlxsw_minimal_i2c_driver); + if (err) + goto err_i2c_driver_register; + + return 0; + +err_i2c_driver_register: + mlxsw_core_driver_unregister(&mlxsw_minimal_driver); + + return err; +} + +static void __exit mlxsw_minimal_module_exit(void) +{ + mlxsw_i2c_driver_unregister(&mlxsw_minimal_i2c_driver); + mlxsw_core_driver_unregister(&mlxsw_minimal_driver); +} + +module_init(mlxsw_minimal_module_init); +module_exit(mlxsw_minimal_module_exit); + +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_AUTHOR("Vadim Pasternak <vadimp@mellanox.com>"); +MODULE_DESCRIPTION("Mellanox minimal driver"); +MODULE_DEVICE_TABLE(i2c, mlxsw_minimal_i2c_id); |