From b0d590a5cdd95ed863717b279751d6166083889f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= Date: Mon, 22 Jan 2024 08:35:54 +0300 Subject: [PATCH 25/48] net: dsa: mt7530: store port 5 SGMII capability of MT7531 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Introduce the p5_sgmii field to store the information for whether port 5 has got SGMII or not. Instead of reading the MT7531_TOP_SIG_SR register multiple times, the register will be read once and the value will be stored on the p5_sgmii field. This saves unnecessary reads of the register. Move the comment about MT7531AE and MT7531BE to mt7531_setup(), where the switch is identified. Get rid of mt7531_dual_sgmii_supported() now that priv->p5_sgmii stores the information. Address the code where mt7531_dual_sgmii_supported() is used. Get rid of mt7531_is_rgmii_port() which just prints the opposite of priv->p5_sgmii. Instead of calling mt7531_pll_setup() then returning, do not call it if port 5 is SGMII. Remove P5_INTF_SEL_GMAC5_SGMII. The p5_interface_select enum is supposed to represent the mode that port 5 is being used in, not the hardware information of port 5. Set p5_intf_sel to P5_INTF_SEL_GMAC5 instead, if port 5 is not dsa_is_unused_port(). Signed-off-by: Arınç ÜNAL Acked-by: Daniel Golle Reviewed-by: Vladimir Oltean Link: https://lore.kernel.org/r/20240122-for-netnext-mt7530-improvements-1-v3-3-042401f2b279@arinc9.com Signed-off-by: Jakub Kicinski --- drivers/net/dsa/mt7530-mdio.c | 7 ++--- drivers/net/dsa/mt7530.c | 48 ++++++++++++----------------------- drivers/net/dsa/mt7530.h | 6 +++-- 3 files changed, 22 insertions(+), 39 deletions(-) --- a/drivers/net/dsa/mt7530-mdio.c +++ b/drivers/net/dsa/mt7530-mdio.c @@ -81,17 +81,14 @@ static const struct regmap_bus mt7530_re }; static int -mt7531_create_sgmii(struct mt7530_priv *priv, bool dual_sgmii) +mt7531_create_sgmii(struct mt7530_priv *priv) { struct regmap_config *mt7531_pcs_config[2] = {}; struct phylink_pcs *pcs; struct regmap *regmap; int i, ret = 0; - /* MT7531AE has two SGMII units for port 5 and port 6 - * MT7531BE has only one SGMII unit for port 6 - */ - for (i = dual_sgmii ? 0 : 1; i < 2; i++) { + for (i = priv->p5_sgmii ? 0 : 1; i < 2; i++) { mt7531_pcs_config[i] = devm_kzalloc(priv->dev, sizeof(struct regmap_config), GFP_KERNEL); --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -487,15 +487,6 @@ mt7530_pad_clk_setup(struct dsa_switch * return 0; } -static bool mt7531_dual_sgmii_supported(struct mt7530_priv *priv) -{ - u32 val; - - val = mt7530_read(priv, MT7531_TOP_SIG_SR); - - return (val & PAD_DUAL_SGMII_EN) != 0; -} - static int mt7531_pad_setup(struct dsa_switch *ds, phy_interface_t interface) { @@ -510,9 +501,6 @@ mt7531_pll_setup(struct mt7530_priv *pri u32 xtal; u32 val; - if (mt7531_dual_sgmii_supported(priv)) - return; - val = mt7530_read(priv, MT7531_CREV); top_sig = mt7530_read(priv, MT7531_TOP_SIG_SR); hwstrap = mt7530_read(priv, MT7531_HWTRAP); @@ -927,8 +915,6 @@ static const char *p5_intf_modes(unsigne return "PHY P4"; case P5_INTF_SEL_GMAC5: return "GMAC5"; - case P5_INTF_SEL_GMAC5_SGMII: - return "GMAC5_SGMII"; default: return "unknown"; } @@ -2697,6 +2683,12 @@ mt7531_setup(struct dsa_switch *ds) return -ENODEV; } + /* MT7531AE has got two SGMII units. One for port 5, one for port 6. + * MT7531BE has got only one SGMII unit which is for port 6. + */ + val = mt7530_read(priv, MT7531_TOP_SIG_SR); + priv->p5_sgmii = !!(val & PAD_DUAL_SGMII_EN); + /* all MACs must be forced link-down before sw reset */ for (i = 0; i < MT7530_NUM_PORTS; i++) mt7530_write(priv, MT7530_PMCR_P(i), MT7531_FORCE_LNK); @@ -2706,21 +2698,18 @@ mt7531_setup(struct dsa_switch *ds) SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST | SYS_CTRL_REG_RST); - mt7531_pll_setup(priv); - - if (mt7531_dual_sgmii_supported(priv)) { - priv->p5_intf_sel = P5_INTF_SEL_GMAC5_SGMII; - + if (!priv->p5_sgmii) { + mt7531_pll_setup(priv); + } else { /* Let ds->slave_mii_bus be able to access external phy. */ mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO11_RG_RXD2_MASK, MT7531_EXT_P_MDC_11); mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO12_RG_RXD3_MASK, MT7531_EXT_P_MDIO_12); - } else { - priv->p5_intf_sel = P5_INTF_SEL_GMAC5; } - dev_dbg(ds->dev, "P5 support %s interface\n", - p5_intf_modes(priv->p5_intf_sel)); + + if (!dsa_is_unused_port(ds, 5)) + priv->p5_intf_sel = P5_INTF_SEL_GMAC5; mt7530_rmw(priv, MT7531_GPIO_MODE0, MT7531_GPIO0_MASK, MT7531_GPIO0_INTERRUPT); @@ -2787,11 +2776,6 @@ static void mt7530_mac_port_get_caps(str } } -static bool mt7531_is_rgmii_port(struct mt7530_priv *priv, u32 port) -{ - return (port == 5) && (priv->p5_intf_sel != P5_INTF_SEL_GMAC5_SGMII); -} - static void mt7531_mac_port_get_caps(struct dsa_switch *ds, int port, struct phylink_config *config) { @@ -2804,7 +2788,7 @@ static void mt7531_mac_port_get_caps(str break; case 5: /* 2nd cpu port supports either rgmii or sgmii/8023z */ - if (mt7531_is_rgmii_port(priv, port)) { + if (!priv->p5_sgmii) { phy_interface_set_rgmii(config->supported_interfaces); break; } @@ -2871,7 +2855,7 @@ static int mt7531_rgmii_setup(struct mt7 { u32 val; - if (!mt7531_is_rgmii_port(priv, port)) { + if (priv->p5_sgmii) { dev_err(priv->dev, "RGMII mode is not available for port %d\n", port); return -EINVAL; @@ -3114,7 +3098,7 @@ mt7531_cpu_port_config(struct dsa_switch switch (port) { case 5: - if (mt7531_is_rgmii_port(priv, port)) + if (!priv->p5_sgmii) interface = PHY_INTERFACE_MODE_RGMII; else interface = PHY_INTERFACE_MODE_2500BASEX; @@ -3272,7 +3256,7 @@ mt753x_setup(struct dsa_switch *ds) mt7530_free_irq_common(priv); if (priv->create_sgmii) { - ret = priv->create_sgmii(priv, mt7531_dual_sgmii_supported(priv)); + ret = priv->create_sgmii(priv); if (ret && priv->irq) mt7530_free_irq(priv); } --- a/drivers/net/dsa/mt7530.h +++ b/drivers/net/dsa/mt7530.h @@ -717,7 +717,6 @@ enum p5_interface_select { P5_INTF_SEL_PHY_P0, P5_INTF_SEL_PHY_P4, P5_INTF_SEL_GMAC5, - P5_INTF_SEL_GMAC5_SGMII, }; struct mt7530_priv; @@ -779,6 +778,8 @@ struct mt753x_info { * registers * @p6_interface Holding the current port 6 interface * @p5_intf_sel: Holding the current port 5 interface select + * @p5_sgmii: Flag for distinguishing if port 5 of the MT7531 switch + * has got SGMII * @irq: IRQ number of the switch * @irq_domain: IRQ domain of the switch irq_chip * @irq_enable: IRQ enable bits, synced to SYS_INT_EN @@ -800,6 +801,7 @@ struct mt7530_priv { phy_interface_t p6_interface; phy_interface_t p5_interface; enum p5_interface_select p5_intf_sel; + bool p5_sgmii; u8 mirror_rx; u8 mirror_tx; struct mt7530_port ports[MT7530_NUM_PORTS]; @@ -809,7 +811,7 @@ struct mt7530_priv { int irq; struct irq_domain *irq_domain; u32 irq_enable; - int (*create_sgmii)(struct mt7530_priv *priv, bool dual_sgmii); + int (*create_sgmii)(struct mt7530_priv *priv); u8 active_cpu_ports; };