From 2982f395c9a513b168f1e685588f70013cba2f5f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= Date: Mon, 22 Apr 2024 10:15:14 +0300 Subject: [PATCH 07/15] net: dsa: mt7530: move MT753X_MTRAP operations for MT7530 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On MT7530, the media-independent interfaces of port 5 and 6 are controlled by the MT7530_P5_DIS and MT7530_P6_DIS bits of the hardware trap. Deal with these bits only when the relevant port is being enabled or disabled. This ensures that these ports will be disabled when they are not in use. Do not set MT7530_CHG_TRAP on mt7530_setup_port5() as that's already being done on mt7530_setup(). Instead of globally setting MT7530_P5_MAC_SEL, clear it, then set it only on the appropriate case. If PHY muxing is detected, clear MT7530_P5_DIS before calling mt7530_setup_port5(). Signed-off-by: Arınç ÜNAL --- drivers/net/dsa/mt7530.c | 38 +++++++++++++++++++++++++++----------- 1 file changed, 27 insertions(+), 11 deletions(-) --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -880,8 +880,7 @@ static void mt7530_setup_port5(struct ds val = mt7530_read(priv, MT753X_MTRAP); - val |= MT7530_CHG_TRAP | MT7530_P5_MAC_SEL | MT7530_P5_DIS; - val &= ~MT7530_P5_RGMII_MODE & ~MT7530_P5_PHY0_SEL; + val &= ~MT7530_P5_PHY0_SEL & ~MT7530_P5_MAC_SEL & ~MT7530_P5_RGMII_MODE; switch (priv->p5_mode) { /* MUX_PHY_P0: P0 -> P5 -> SoC MAC */ @@ -891,15 +890,13 @@ static void mt7530_setup_port5(struct ds /* MUX_PHY_P4: P4 -> P5 -> SoC MAC */ case MUX_PHY_P4: - val &= ~MT7530_P5_MAC_SEL & ~MT7530_P5_DIS; - /* Setup the MAC by default for the cpu port */ mt7530_write(priv, MT753X_PMCR_P(5), 0x56300); break; /* GMAC5: P5 -> SoC MAC or external PHY */ default: - val &= ~MT7530_P5_DIS; + val |= MT7530_P5_MAC_SEL; break; } @@ -1193,6 +1190,14 @@ mt7530_port_enable(struct dsa_switch *ds mutex_unlock(&priv->reg_mutex); + if (priv->id != ID_MT7530 && priv->id != ID_MT7621) + return 0; + + if (port == 5) + mt7530_clear(priv, MT753X_MTRAP, MT7530_P5_DIS); + else if (port == 6) + mt7530_clear(priv, MT753X_MTRAP, MT7530_P6_DIS); + return 0; } @@ -1211,6 +1216,14 @@ mt7530_port_disable(struct dsa_switch *d PCR_MATRIX_CLR); mutex_unlock(&priv->reg_mutex); + + if (priv->id != ID_MT7530 && priv->id != ID_MT7621) + return; + + if (port == 5) + mt7530_set(priv, MT753X_MTRAP, MT7530_P5_DIS); + else if (port == 6) + mt7530_set(priv, MT753X_MTRAP, MT7530_P6_DIS); } static int @@ -2401,11 +2414,11 @@ mt7530_setup(struct dsa_switch *ds) mt7530_rmw(priv, MT7530_TRGMII_RD(i), RD_TAP_MASK, RD_TAP(16)); - /* Enable port 6 */ - val = mt7530_read(priv, MT753X_MTRAP); - val &= ~MT7530_P6_DIS & ~MT7530_PHY_INDIRECT_ACCESS; - val |= MT7530_CHG_TRAP; - mt7530_write(priv, MT753X_MTRAP, val); + /* Allow modifying the trap and directly access PHY registers via the + * MDIO bus the switch is on. + */ + mt7530_rmw(priv, MT753X_MTRAP, MT7530_CHG_TRAP | + MT7530_PHY_INDIRECT_ACCESS, MT7530_CHG_TRAP); if ((val & MT7530_XTAL_MASK) == MT7530_XTAL_40MHZ) mt7530_pll_setup(priv); @@ -2488,8 +2501,11 @@ mt7530_setup(struct dsa_switch *ds) break; } - if (priv->p5_mode == MUX_PHY_P0 || priv->p5_mode == MUX_PHY_P4) + if (priv->p5_mode == MUX_PHY_P0 || + priv->p5_mode == MUX_PHY_P4) { + mt7530_clear(priv, MT753X_MTRAP, MT7530_P5_DIS); mt7530_setup_port5(ds, interface); + } } #ifdef CONFIG_GPIOLIB