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net: mtk_eth_soc: add pcs_get_state() implementation

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Add a pcs_get_state() implementation which uses the advertisements
to compute the resulting link modes, and BMSR contents to determine
negotiation and link status.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Russell King (Oracle) 2022-10-27 14:10:52 +01:00 committed by Jakub Kicinski
parent 5cf7797526
commit c000dca098
1 changed files with 15 additions and 0 deletions
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15
drivers/net/ethernet/mediatek/mtk_sgmii.c
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@ -19,6 +19,20 @@ static struct mtk_pcs *pcs_to_mtk_pcs(struct phylink_pcs *pcs)
return container_of(pcs, struct mtk_pcs, pcs);
}
static void mtk_pcs_get_state(struct phylink_pcs *pcs,
struct phylink_link_state *state)
{
struct mtk_pcs *mpcs = pcs_to_mtk_pcs(pcs);
unsigned int bm, adv;
/* Read the BMSR and LPA */
regmap_read(mpcs->regmap, SGMSYS_PCS_CONTROL_1, &bm);
regmap_read(mpcs->regmap, SGMSYS_PCS_ADVERTISE, &adv);
phylink_mii_c22_pcs_decode_state(state, FIELD_GET(SGMII_BMSR, bm),
FIELD_GET(SGMII_LPA, adv));
}
/* For SGMII interface mode */
static void mtk_pcs_setup_mode_an(struct mtk_pcs *mpcs)
{
@ -117,6 +131,7 @@ static void mtk_pcs_link_up(struct phylink_pcs *pcs, unsigned int mode,
}
static const struct phylink_pcs_ops mtk_pcs_ops = {
.pcs_get_state = mtk_pcs_get_state,
.pcs_config = mtk_pcs_config,
.pcs_an_restart = mtk_pcs_restart_an,
.pcs_link_up = mtk_pcs_link_up,