[PATCH net-next 23/24] net: dsa: mt7530: rename p5_intf_sel and use only for MT7530 switch

arinc9.unal
2023-04-25T08:33:35Z

The p5_intf_sel pointer is used to store the information of whether PHY
muxing is used or not. PHY muxing is a feature specific to port 5 of the
MT7530 switch. Do not use it for other switch models.

Rename the pointer to p5_mode to store the mode the port is being used in.
Rename the p5_interface_select enum to mt7530_p5_mode, the string
representation to mt7530_p5_mode_str, and the enum elements.

If PHY muxing is not detected, the default mode, GMAC5, will be used.

Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
---
drivers/net/dsa/mt7530.c | 61 ++++++++++++++++------------------------
drivers/net/dsa/mt7530.h | 15 +++++-----
2 files changed, 32 insertions(+), 44 deletions(-)

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 02e6ba5a4403..62e55df273cc 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -873,19 +873,15 @@ mt7530_set_ageing_time(struct dsa_switch *ds, unsigned int msecs)
return 0;
}

-static const char *p5_intf_modes(unsigned int p5_interface)
-{
- switch (p5_interface) {
- case P5_DISABLED:
- return "DISABLED";
- case P5_INTF_SEL_PHY_P0:
- return "PHY P0";
- case P5_INTF_SEL_PHY_P4:
- return "PHY P4";
- case P5_INTF_SEL_GMAC5:
- return "GMAC5";
+static const char *mt7530_p5_mode_str(unsigned int mode)
+{
+ switch (mode) {
+ case MUX_PHY_P0:
+ return "MUX PHY P0";
+ case MUX_PHY_P4:
+ return "MUX PHY P4";
default:
- return "unknown";
+ return "GMAC5";
}
}

@@ -902,23 +898,21 @@ static void mt7530_setup_port5(struct dsa_switch *ds, phy_interface_t interface)
val |= MHWTRAP_MANUAL | MHWTRAP_P5_MAC_SEL | MHWTRAP_P5_DIS;
val &= ~MHWTRAP_P5_RGMII_MODE & ~MHWTRAP_PHY0_SEL;

- switch (priv->p5_intf_sel) {
- case P5_INTF_SEL_PHY_P0:
- /* MT7530_P5_MODE_GPHY_P0: 2nd GMAC -> P5 -> P0 */
+ switch (priv->p5_mode) {
+ case MUX_PHY_P0:
+ /* MUX_PHY_P0: P0 -> P5 -> SoC MAC */
val |= MHWTRAP_PHY0_SEL;
fallthrough;
- case P5_INTF_SEL_PHY_P4:
- /* MT7530_P5_MODE_GPHY_P4: 2nd GMAC -> P5 -> P4 */
+ case MUX_PHY_P4:
+ /* MUX_PHY_P4: P4 -> P5 -> SoC MAC */
val &= ~MHWTRAP_P5_MAC_SEL & ~MHWTRAP_P5_DIS;

/* Setup the MAC by default for the cpu port */
mt7530_write(priv, MT7530_PMCR_P(5), 0x56300);
break;
- case P5_INTF_SEL_GMAC5:
- /* MT7530_P5_MODE_GMAC: P5 -> External phy or 2nd GMAC */
- val &= ~MHWTRAP_P5_DIS;
- break;
default:
+ /* GMAC5: P5 -> SoC MAC or external PHY */
+ val &= ~MHWTRAP_P5_DIS;
break;
}

@@ -942,8 +936,8 @@ static void mt7530_setup_port5(struct dsa_switch *ds, phy_interface_t interface)

mt7530_write(priv, MT7530_MHWTRAP, val);

- dev_dbg(ds->dev, "Setup P5, HWTRAP=0x%x, intf_sel=%s, phy-mode=%s\n",
- val, p5_intf_modes(priv->p5_intf_sel), phy_modes(interface));
+ dev_dbg(ds->dev, "Setup P5, HWTRAP=0x%x, mode=%s, phy-mode=%s\n", val,
+ mt7530_p5_mode_str(priv->p5_mode), phy_modes(interface));

mutex_unlock(&priv->reg_mutex);
}
@@ -2261,13 +2255,11 @@ mt7530_setup(struct dsa_switch *ds)
if (ret)
return ret;

- /* Setup port 5 */
- if (!dsa_is_unused_port(ds, 5)) {
- priv->p5_intf_sel = P5_INTF_SEL_GMAC5;
- } else {
+ /* Check for PHY muxing on port 5 */
+ if (dsa_is_unused_port(ds, 5)) {
/* Scan the ethernet nodes. Look for GMAC1, lookup the used PHY.
- * Set priv->p5_intf_sel to the appropriate value if PHY muxing
- * is detected.
+ * Set priv->p5_mode to the appropriate value if PHY muxing is
+ * detected.
*/
for_each_child_of_node(dn, mac_np) {
if (!of_device_is_compatible(mac_np,
@@ -2291,17 +2283,17 @@ mt7530_setup(struct dsa_switch *ds)
}
id = of_mdio_parse_addr(ds->dev, phy_node);
if (id == 0)
- priv->p5_intf_sel = P5_INTF_SEL_PHY_P0;
+ priv->p5_mode = MUX_PHY_P0;
if (id == 4)
- priv->p5_intf_sel = P5_INTF_SEL_PHY_P4;
+ priv->p5_mode = MUX_PHY_P4;
}
of_node_put(mac_np);
of_node_put(phy_node);
break;
}

- if (priv->p5_intf_sel == P5_INTF_SEL_PHY_P0 ||
- priv->p5_intf_sel == P5_INTF_SEL_PHY_P4)
+ if (priv->p5_mode == MUX_PHY_P0 ||
+ priv->p5_mode == MUX_PHY_P4)
mt7530_setup_port5(ds, interface);
}

@@ -2438,9 +2430,6 @@ mt7531_setup(struct dsa_switch *ds)
MT7531_EXT_P_MDIO_12);
}

- 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);

diff --git a/drivers/net/dsa/mt7530.h b/drivers/net/dsa/mt7530.h
index b7f80a487073..216081fb1c12 100644
--- a/drivers/net/dsa/mt7530.h
+++ b/drivers/net/dsa/mt7530.h
@@ -673,12 +673,11 @@ struct mt7530_port {
struct phylink_pcs *sgmii_pcs;
};

-/* Port 5 interface select definitions */
-enum p5_interface_select {
- P5_DISABLED,
- P5_INTF_SEL_PHY_P0,
- P5_INTF_SEL_PHY_P4,
- P5_INTF_SEL_GMAC5,
+/* Port 5 mode definitions of the MT7530 switch */
+enum mt7530_p5_mode {
+ GMAC5,
+ MUX_PHY_P0,
+ MUX_PHY_P4,
};

struct mt7530_priv;
@@ -746,7 +745,7 @@ struct mt753x_info {
* is already configured
* @p5_configured: Flag for distinguishing if port 5 of the MT7531 switch
* is already configured
- * @p5_intf_sel: Holding the current port 5 interface select
+ * @p5_mode: Holding the current mode of port 5 of the MT7530 switch
* @p5_sgmii: Flag for distinguishing if port 5 of the MT7531 switch
* has got SGMII
* @irq: IRQ number of the switch
@@ -768,7 +767,7 @@ struct mt7530_priv {
bool mcm;
bool p6_configured;
bool p5_configured;
- enum p5_interface_select p5_intf_sel;
+ enum mt7530_p5_mode p5_mode;
bool p5_sgmii;
u8 mirror_rx;
u8 mirror_tx;
--
2.37.2