net: dsa: qca8k: move mib init function to common code

The same mib function is used by drivers based on qca8k family switch.
Move it to common code to make it 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>

3 files changed, 39 insertions, 37 deletions

diff --git a/drivers/net/dsa/qca/qca8k-8xxx.c b/drivers/net/dsa/qca/qca8k-8xxx.c
index 8a5529844c7a..b4daa097a7fc 100644
--- a/drivers/net/dsa/qca/qca8k-8xxx.c
+++ b/drivers/net/dsa/qca/qca8k-8xxx.c
@@ -442,15 +442,6 @@ static struct regmap_config qca8k_regmap_config = {
 };
 
 static int
-qca8k_busy_wait(struct qca8k_priv *priv, u32 reg, u32 mask)
-{
-	u32 val;
-
-	return regmap_read_poll_timeout(priv->regmap, reg, val, !(val & mask), 0,
-				       QCA8K_BUSY_WAIT_TIMEOUT * USEC_PER_MSEC);
-}
-
-static int
 qca8k_fdb_read(struct qca8k_priv *priv, struct qca8k_fdb *fdb)
 {
 	u32 reg[3];
@@ -777,34 +768,6 @@ out:
 	return ret;
 }
 
-static int
-qca8k_mib_init(struct qca8k_priv *priv)
-{
-	int ret;
-
-	mutex_lock(&priv->reg_mutex);
-	ret = regmap_update_bits(priv->regmap, QCA8K_REG_MIB,
-				 QCA8K_MIB_FUNC | QCA8K_MIB_BUSY,
-				 FIELD_PREP(QCA8K_MIB_FUNC, QCA8K_MIB_FLUSH) |
-				 QCA8K_MIB_BUSY);
-	if (ret)
-		goto exit;
-
-	ret = qca8k_busy_wait(priv, QCA8K_REG_MIB, QCA8K_MIB_BUSY);
-	if (ret)
-		goto exit;
-
-	ret = regmap_set_bits(priv->regmap, QCA8K_REG_MIB, QCA8K_MIB_CPU_KEEP);
-	if (ret)
-		goto exit;
-
-	ret = qca8k_write(priv, QCA8K_REG_MODULE_EN, QCA8K_MODULE_EN_MIB);
-
-exit:
-	mutex_unlock(&priv->reg_mutex);
-	return ret;
-}
-
 static void
 qca8k_port_set_status(struct qca8k_priv *priv, int port, int enable)
 {
diff --git a/drivers/net/dsa/qca/qca8k-common.c b/drivers/net/dsa/qca/qca8k-common.c
index a47f876033ba..7da3547f9d97 100644
--- a/drivers/net/dsa/qca/qca8k-common.c
+++ b/drivers/net/dsa/qca/qca8k-common.c
@@ -138,3 +138,38 @@ int qca8k_bulk_write(struct qca8k_priv *priv, u32 reg, u32 *val, int len)
 
 	return 0;
 }
+
+int qca8k_busy_wait(struct qca8k_priv *priv, u32 reg, u32 mask)
+{
+	u32 val;
+
+	return regmap_read_poll_timeout(priv->regmap, reg, val, !(val & mask), 0,
+				       QCA8K_BUSY_WAIT_TIMEOUT * USEC_PER_MSEC);
+}
+
+int qca8k_mib_init(struct qca8k_priv *priv)
+{
+	int ret;
+
+	mutex_lock(&priv->reg_mutex);
+	ret = regmap_update_bits(priv->regmap, QCA8K_REG_MIB,
+				 QCA8K_MIB_FUNC | QCA8K_MIB_BUSY,
+				 FIELD_PREP(QCA8K_MIB_FUNC, QCA8K_MIB_FLUSH) |
+				 QCA8K_MIB_BUSY);
+	if (ret)
+		goto exit;
+
+	ret = qca8k_busy_wait(priv, QCA8K_REG_MIB, QCA8K_MIB_BUSY);
+	if (ret)
+		goto exit;
+
+	ret = regmap_set_bits(priv->regmap, QCA8K_REG_MIB, QCA8K_MIB_CPU_KEEP);
+	if (ret)
+		goto exit;
+
+	ret = qca8k_write(priv, QCA8K_REG_MODULE_EN, QCA8K_MODULE_EN_MIB);
+
+exit:
+	mutex_unlock(&priv->reg_mutex);
+	return ret;
+}
diff --git a/drivers/net/dsa/qca/qca8k.h b/drivers/net/dsa/qca/qca8k.h
index df32c1e3a797..f55ef97f826f 100644
--- a/drivers/net/dsa/qca/qca8k.h
+++ b/drivers/net/dsa/qca/qca8k.h
@@ -430,6 +430,7 @@ struct qca8k_fdb {
 /* Common setup function */
 extern const struct qca8k_mib_desc ar8327_mib[];
 extern const struct regmap_access_table qca8k_readable_table;
+int qca8k_mib_init(struct qca8k_priv *priv);
 
 /* Common read/write/rmw function */
 int qca8k_read(struct qca8k_priv *priv, u32 reg, u32 *val);
@@ -439,4 +440,7 @@ int qca8k_rmw(struct qca8k_priv *priv, u32 reg, u32 mask, u32 write_val);
 int qca8k_bulk_read(struct qca8k_priv *priv, u32 reg, u32 *val, int len);
 int qca8k_bulk_write(struct qca8k_priv *priv, u32 reg, u32 *val, int len);
 
+/* Common ops function */
+int qca8k_busy_wait(struct qca8k_priv *priv, u32 reg, u32 mask);
+
 #endif /* __QCA8K_H */