From aa92d836d5c40a7e21e563a272ad177f1bfd44dd Mon Sep 17 00:00:00 2001 From: Maxim Kochetkov Date: Mon, 13 Jul 2020 19:57:08 +0300 Subject: net: mscc: ocelot: extend watermark encoding function The ocelot_wm_encode function deals with setting thresholds for pause frame start and stop. In Ocelot and Felix the register layout is the same, but for Seville, it isn't. The easiest way to accommodate Seville hardware configuration is to introduce a function pointer for setting this up. Signed-off-by: Maxim Kochetkov Signed-off-by: Vladimir Oltean Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/dsa/ocelot/felix_vsc9959.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/net/dsa') diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c index fea482ad92c7..7e8a99455670 100644 --- a/drivers/net/dsa/ocelot/felix_vsc9959.c +++ b/drivers/net/dsa/ocelot/felix_vsc9959.c @@ -1149,8 +1149,21 @@ static int vsc9959_prevalidate_phy_mode(struct ocelot *ocelot, int port, } } +/* Watermark encode + * Bit 8: Unit; 0:1, 1:16 + * Bit 7-0: Value to be multiplied with unit + */ +static u16 vsc9959_wm_enc(u16 value) +{ + if (value >= BIT(8)) + return BIT(8) | (value / 16); + + return value; +} + static const struct ocelot_ops vsc9959_ops = { .reset = vsc9959_reset, + .wm_enc = vsc9959_wm_enc, }; static int vsc9959_mdio_bus_alloc(struct ocelot *ocelot) -- cgit v1.2.3