[RFC net-next PATCH 11/16] net: macb: Support restarting PCS autonegotiation
From: Sean Anderson <hidden>
Date: 2021-10-04 19:17:00
Also in:
lkml
Subsystem:
atmel macb ethernet driver, networking drivers, the rest · Maintainers:
Théo Lebrun, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
This adds support for restarting autonegotiation using the internal PCS. Signed-off-by: Sean Anderson <redacted> --- drivers/net/ethernet/cadence/macb_main.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 08dcccd94f87..b938cdf4bb59 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c@@ -662,6 +662,21 @@ static int macb_pcs_config(struct phylink_pcs *pcs, unsigned int mode, return changed; } +static void macb_pcs_an_restart(struct phylink_pcs *pcs) +{ + struct macb *bp = pcs_to_macb(pcs); + u32 bmcr; + unsigned long flags; + + spin_lock_irqsave(&bp->lock, flags); + + bmcr = gem_readl(bp, PCSCNTRL); + bmcr |= BMCR_ANENABLE; + gem_writel(bp, PCSCNTRL, bmcr); + + spin_lock_irqsave(&bp->lock, flags); +} + static void macb_usx_pcs_get_state(struct phylink_pcs *pcs, struct phylink_link_state *state) {
@@ -733,6 +748,7 @@ static const struct phylink_pcs_ops macb_phylink_usx_pcs_ops = { static const struct phylink_pcs_ops macb_phylink_pcs_ops = { .pcs_get_state = macb_pcs_get_state, .pcs_config = macb_pcs_config, + .pcs_an_restart = macb_pcs_an_restart, }; static void macb_mac_config(struct phylink_config *config, unsigned int mode,
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2.25.1