[PATCH net-next 2/9] mlxsw: core: Add a new interface for reading the hardware free running clock

[Ido Schimmel]

From: Shalom Toledo <shal...@mellanox.com>

Add two new bus operations for reading the hardware free running clock.

Signed-off-by: Shalom Toledo <shal...@mellanox.com>
Acked-by: Jiri Pirko <j...@mellanox.com>
Reviewed-by: Petr Machata <pe...@mellanox.com>
Signed-off-by: Ido Schimmel <ido...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/core.c | 12 ++++++++++++
 drivers/net/ethernet/mellanox/mlxsw/core.h |  8 +++++++-
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c 
b/drivers/net/ethernet/mellanox/mlxsw/core.c
index 182762898361..b49a6520386c 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -2011,6 +2011,18 @@ int mlxsw_core_resources_query(struct mlxsw_core 
*mlxsw_core, char *mbox,
 }
 EXPORT_SYMBOL(mlxsw_core_resources_query);
 
+u32 mlxsw_core_read_frc_h(struct mlxsw_core *mlxsw_core)
+{
+       return mlxsw_core->bus->read_frc_h(mlxsw_core->bus_priv);
+}
+EXPORT_SYMBOL(mlxsw_core_read_frc_h);
+
+u32 mlxsw_core_read_frc_l(struct mlxsw_core *mlxsw_core)
+{
+       return mlxsw_core->bus->read_frc_l(mlxsw_core->bus_priv);
+}
+EXPORT_SYMBOL(mlxsw_core_read_frc_l);
+
 static int __init mlxsw_core_module_init(void)
 {
        int err;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h 
b/drivers/net/ethernet/mellanox/mlxsw/core.h
index e3832cb5bdda..02d1e580e44f 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.h
@@ -306,6 +306,9 @@ int mlxsw_core_kvd_sizes_get(struct mlxsw_core *mlxsw_core,
 void mlxsw_core_fw_flash_start(struct mlxsw_core *mlxsw_core);
 void mlxsw_core_fw_flash_end(struct mlxsw_core *mlxsw_core);
 
+u32 mlxsw_core_read_frc_h(struct mlxsw_core *mlxsw_core);
+u32 mlxsw_core_read_frc_l(struct mlxsw_core *mlxsw_core);
+
 bool mlxsw_core_res_valid(struct mlxsw_core *mlxsw_core,
                          enum mlxsw_res_id res_id);
 
@@ -336,6 +339,8 @@ struct mlxsw_bus {
                        char *in_mbox, size_t in_mbox_size,
                        char *out_mbox, size_t out_mbox_size,
                        u8 *p_status);
+       u32 (*read_frc_h)(void *bus_priv);
+       u32 (*read_frc_l)(void *bus_priv);
        u8 features;
 };
 
@@ -353,7 +358,8 @@ struct mlxsw_bus_info {
        struct mlxsw_fw_rev fw_rev;
        u8 vsd[MLXSW_CMD_BOARDINFO_VSD_LEN];
        u8 psid[MLXSW_CMD_BOARDINFO_PSID_LEN];
-       u8 low_frequency;
+       u8 low_frequency:1,
+          read_frc_capable:1;
 };
 
 struct mlxsw_hwmon;
-- 
2.20.1