[PATCH net-next v1 6/9] net: dsa: qca: ar9331: add ageing time support

[Oleksij Rempel]

This switch provides global ageing time configuration, so let DSA use
it.

Signed-off-by: Oleksij Rempel <o.rem...@pengutronix.de>
---
 drivers/net/dsa/qca/ar9331.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/net/dsa/qca/ar9331.c b/drivers/net/dsa/qca/ar9331.c
index 4a98f14f31f4..b2c22ba924f0 100644
--- a/drivers/net/dsa/qca/ar9331.c
+++ b/drivers/net/dsa/qca/ar9331.c
@@ -1115,6 +1115,25 @@ static void ar9331_sw_port_fast_age(struct dsa_switch 
*ds, int port)
        dev_err_ratelimited(priv->dev, "%s: error: %i\n", __func__, ret);
 }
 
+static int ar9331_sw_set_ageing_time(struct dsa_switch *ds,
+                                    unsigned int ageing_time)
+{
+       struct ar9331_sw_priv *priv = (struct ar9331_sw_priv *)ds->priv;
+       struct regmap *regmap = priv->regmap;
+       u32 time, val;
+
+       time = DIV_ROUND_UP(ageing_time, AR9331_SW_AT_AGE_TIME_COEF);
+       if (!time)
+               time = 1;
+       else if (time > U16_MAX)
+               time = U16_MAX;
+
+       val = FIELD_PREP(AR9331_SW_AT_AGE_TIME, time) | AR9331_SW_AT_AGE_EN;
+       return regmap_update_bits(regmap, AR9331_SW_REG_ADDR_TABLE_CTRL,
+                                 AR9331_SW_AT_AGE_EN | AR9331_SW_AT_AGE_TIME,
+                                 val);
+}
+
 static const struct dsa_switch_ops ar9331_sw_ops = {
        .get_tag_protocol       = ar9331_sw_get_tag_protocol,
        .setup                  = ar9331_sw_setup,
@@ -1130,6 +1149,7 @@ static const struct dsa_switch_ops ar9331_sw_ops = {
        .port_fdb_dump          = ar9331_sw_port_fdb_dump,
        .port_mdb_add           = ar9331_sw_port_mdb_add,
        .port_mdb_del           = ar9331_sw_port_mdb_del,
+       .set_ageing_time        = ar9331_sw_set_ageing_time,
 };
 
 static irqreturn_t ar9331_sw_irq(int irq, void *data)
@@ -1476,6 +1496,8 @@ static int ar9331_sw_probe(struct mdio_device *mdiodev)
        priv->ops = ar9331_sw_ops;
        ds->ops = &priv->ops;
        dev_set_drvdata(&mdiodev->dev, priv);
+       ds->ageing_time_min = AR9331_SW_AT_AGE_TIME_COEF;
+       ds->ageing_time_max = AR9331_SW_AT_AGE_TIME_COEF * U16_MAX;
 
        for (i = 0; i < ARRAY_SIZE(priv->port); i++) {
                struct ar9331_sw_port *port = &priv->port[i];
-- 
2.29.2