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    Subject[net-next PATCH 12/19] net: dsa: qca8k: add set_ageing_time support
    Date
    qca8k support setting ageing time in set of 7s. Add support for it and
    return error with value greater than the max value accepted of 7645m.

    Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
    ---
    drivers/net/dsa/qca8k.c | 18 ++++++++++++++++++
    drivers/net/dsa/qca8k.h | 3 +++
    2 files changed, 21 insertions(+)

    diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c
    index a74099131e3d..50f19549b97d 100644
    --- a/drivers/net/dsa/qca8k.c
    +++ b/drivers/net/dsa/qca8k.c
    @@ -1833,6 +1833,23 @@ qca8k_port_fast_age(struct dsa_switch *ds, int port)
    mutex_unlock(&priv->reg_mutex);
    }

    +static int
    +qca8k_set_ageing_time(struct dsa_switch *ds, unsigned int msecs)
    +{
    + struct qca8k_priv *priv = ds->priv;
    + unsigned int secs = msecs / 1000;
    + u32 val;
    +
    + /* AGE_TIME reg is set in 7s step */
    + val = secs / 7;
    +
    + if (val > FIELD_MAX(QCA8K_ATU_AGE_TIME_MASK))
    + return -ERANGE;
    +
    + return regmap_update_bits(priv->regmap, QCA8K_REG_ATU_CTRL, QCA8K_ATU_AGE_TIME_MASK,
    + QCA8K_ATU_AGE_TIME(val));
    +}
    +
    static int
    qca8k_port_enable(struct dsa_switch *ds, int port,
    struct phy_device *phy)
    @@ -2125,6 +2142,7 @@ static const struct dsa_switch_ops qca8k_switch_ops = {
    .get_strings = qca8k_get_strings,
    .get_ethtool_stats = qca8k_get_ethtool_stats,
    .get_sset_count = qca8k_get_sset_count,
    + .set_ageing_time = qca8k_set_ageing_time,
    .get_mac_eee = qca8k_get_mac_eee,
    .set_mac_eee = qca8k_set_mac_eee,
    .port_enable = qca8k_port_enable,
    diff --git a/drivers/net/dsa/qca8k.h b/drivers/net/dsa/qca8k.h
    index d25afdab4dea..e1298179d7cb 100644
    --- a/drivers/net/dsa/qca8k.h
    +++ b/drivers/net/dsa/qca8k.h
    @@ -175,6 +175,9 @@
    #define QCA8K_VTU_FUNC1_BUSY BIT(31)
    #define QCA8K_VTU_FUNC1_VID_MASK GENMASK(27, 16)
    #define QCA8K_VTU_FUNC1_FULL BIT(4)
    +#define QCA8K_REG_ATU_CTRL 0x618
    +#define QCA8K_ATU_AGE_TIME_MASK GENMASK(15, 0)
    +#define QCA8K_ATU_AGE_TIME(x) FIELD_PREP(QCA8K_ATU_AGE_TIME_MASK, (x))
    #define QCA8K_REG_GLOBAL_FW_CTRL0 0x620
    #define QCA8K_GLOBAL_FW_CTRL0_CPU_PORT_EN BIT(10)
    #define QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM GENMASK(7, 4)
    --
    2.32.0
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