netdev - [patch net-next RFC 04/12] mlxsw: core: Add bus frequency capability flag for the bus type

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Message-Id: <1530015037-67361-5-git-send-email-vadimp@mellanox.com>
Date:   Tue, 26 Jun 2018 12:10:29 +0000
From:   Vadim Pasternak <vadimp@...lanox.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, linux@...ck-us.net, rui.zhang@...el.com,
        edubezval@...il.com, jiri@...nulli.us, mlxsw@...lanox.com,
        michaelsh@...lanox.com, Vadim Pasternak <vadimp@...lanox.com>
Subject: [patch net-next RFC 04/12] mlxsw: core: Add bus frequency capability flag for the bus type

Add low frequency bus capability in order to allow core functionality
separation based on bus type. Driver could run over PCIe, which is
considered as high frequency bus or I2C , which is considered as low
frequency bus. In the last case time setting, for example, for thermal
polling interval, should be increased.

Signed-off-by: Vadim Pasternak <vadimp@...lanox.com>
Acked-by: Jiri Pirko <jiri@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/core.h | 1 +
 drivers/net/ethernet/mellanox/mlxsw/i2c.c  | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h
index 552cfa2..95e6190 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.h
@@ -371,6 +371,7 @@ struct mlxsw_bus_info {
 	struct mlxsw_fw_rev fw_rev;
 	u8 vsd[MLXSW_CMD_BOARDINFO_VSD_LEN];
 	u8 psid[MLXSW_CMD_BOARDINFO_PSID_LEN];
+	bool low_frequency;
 };
 
 struct mlxsw_hwmon;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/i2c.c b/drivers/net/ethernet/mellanox/mlxsw/i2c.c
index 25f9915..384b337 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/i2c.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/i2c.c
@@ -536,6 +536,7 @@ static int mlxsw_i2c_probe(struct i2c_client *client,
 	mlxsw_i2c->bus_info.device_kind = id->name;
 	mlxsw_i2c->bus_info.device_name = client->name;
 	mlxsw_i2c->bus_info.dev = &client->dev;
+	mlxsw_i2c->bus_info.low_frequency = true;
 	mlxsw_i2c->dev = &client->dev;
 
 	err = mlxsw_core_bus_device_register(&mlxsw_i2c->bus_info,
-- 
2.1.4