diff options
| author | Christian Marangi <ansuelsmth@gmail.com> | 2022-07-27 14:35:23 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-07-29 08:24:40 +0300 |
| commit | 9d1bcb1f293f1391302a109c9819c3705c804700 (patch) | |
| tree | 103a0dbdc757b3fdc05b88792d90b41d640ebaf2 /drivers/net/dsa/qca/qca8k-common.c | |
| parent | e9bbf019af44b204b71ef8edf224002550aab641 (diff) | |
| download | linux-9d1bcb1f293f1391302a109c9819c3705c804700.tar.xz | |
net: dsa: qca8k: move read_switch_id function to common code
The same function to read the switch id is used by drivers based on
qca8k family switch. Move them to common code to make them accessible
also by other drivers.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/dsa/qca/qca8k-common.c')
| -rw-r--r-- | drivers/net/dsa/qca/qca8k-common.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/dsa/qca/qca8k-common.c b/drivers/net/dsa/qca/qca8k-common.c index c881a95441dd..bba95613e218 100644 --- a/drivers/net/dsa/qca/qca8k-common.c +++ b/drivers/net/dsa/qca/qca8k-common.c @@ -1179,3 +1179,32 @@ int qca8k_port_lag_leave(struct dsa_switch *ds, int port, { return qca8k_lag_refresh_portmap(ds, port, lag, true); } + +int qca8k_read_switch_id(struct qca8k_priv *priv) +{ + u32 val; + u8 id; + int ret; + + if (!priv->info) + return -ENODEV; + + ret = qca8k_read(priv, QCA8K_REG_MASK_CTRL, &val); + if (ret < 0) + return -ENODEV; + + id = QCA8K_MASK_CTRL_DEVICE_ID(val); + if (id != priv->info->id) { + dev_err(priv->dev, + "Switch id detected %x but expected %x", + id, priv->info->id); + return -ENODEV; + } + + priv->switch_id = id; + + /* Save revision to communicate to the internal PHY driver */ + priv->switch_revision = QCA8K_MASK_CTRL_REV_ID(val); + + return 0; +} |