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Message-ID: <20231026054305.336968-1-Raju.Lakkaraju@microchip.com> Date: Thu, 26 Oct 2023 11:13:05 +0530 From: Raju Lakkaraju <Raju.Lakkaraju@...rochip.com> To: <netdev@...r.kernel.org> CC: <davem@...emloft.net>, <kuba@...nel.org>, <linux-kernel@...r.kernel.org>, <andrew@...n.ch>, <Jose.Abreu@...opsys.com>, <linux@...linux.org.uk>, <fancer.lancer@...il.com>, <UNGLinuxDriver@...rochip.com> Subject: [PATCH net-next V1] net: pcs: xpcs: Add 2500BASE-X case in get state for XPCS drivers Add DW_2500BASEX case in xpcs_get_state( ) to update speed, duplex and pause Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@...rochip.com> --- Change List: ============ V0 -> V1: - Remove the auto-negotiation check due to currently the DW_2500BASEX mode doesn't imply any auto-negotiation drivers/net/pcs/pcs-xpcs.c | 29 +++++++++++++++++++++++++++++ drivers/net/pcs/pcs-xpcs.h | 2 ++ 2 files changed, 31 insertions(+) diff --git a/drivers/net/pcs/pcs-xpcs.c b/drivers/net/pcs/pcs-xpcs.c index 4dbc21f604f2..f5e1dcac9e3e 100644 --- a/drivers/net/pcs/pcs-xpcs.c +++ b/drivers/net/pcs/pcs-xpcs.c @@ -1090,6 +1090,28 @@ static int xpcs_get_state_c37_1000basex(struct dw_xpcs *xpcs, return 0; } +static int xpcs_get_state_2500basex(struct dw_xpcs *xpcs, + struct phylink_link_state *state) +{ + int sts; + + sts = xpcs_read(xpcs, MDIO_MMD_VEND2, DW_VR_MII_MMD_STS); + + state->link = !!(sts & DW_VR_MII_MMD_STS_LINK_STS); + if (!state->link) { + state->speed = SPEED_UNKNOWN; + state->pause = MLO_PAUSE_NONE; + state->duplex = DUPLEX_UNKNOWN; + return 0; + } + + state->speed = SPEED_2500; + state->pause |= MLO_PAUSE_TX | MLO_PAUSE_RX; + state->duplex = DUPLEX_FULL; + + return 0; +} + static void xpcs_get_state(struct phylink_pcs *pcs, struct phylink_link_state *state) { @@ -1127,6 +1149,13 @@ static void xpcs_get_state(struct phylink_pcs *pcs, ERR_PTR(ret)); } break; + case DW_2500BASEX: + ret = xpcs_get_state_2500basex(xpcs, state); + if (ret) { + pr_err("xpcs_get_state_2500basex returned %pe\n", + ERR_PTR(ret)); + } + break; default: return; } diff --git a/drivers/net/pcs/pcs-xpcs.h b/drivers/net/pcs/pcs-xpcs.h index 39a90417e535..96c36b32ca99 100644 --- a/drivers/net/pcs/pcs-xpcs.h +++ b/drivers/net/pcs/pcs-xpcs.h @@ -55,6 +55,8 @@ /* Clause 37 Defines */ /* VR MII MMD registers offsets */ #define DW_VR_MII_MMD_CTRL 0x0000 +#define DW_VR_MII_MMD_STS 0x0001 +#define DW_VR_MII_MMD_STS_LINK_STS BIT(2) #define DW_VR_MII_DIG_CTRL1 0x8000 #define DW_VR_MII_AN_CTRL 0x8001 #define DW_VR_MII_AN_INTR_STS 0x8002 -- 2.34.1
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