realtek: add support for port led configuration on RTL93XX

Using the led-set attribute of a port in the dts we allow configuration
of the port leds. Each led-set is being defined in the led-set configuration
of the .dts, giving a specific configuration to steer the port LEDs via a serial
connection.

Signed-off-by: Birger Koblitz <git@birger-koblitz.de>

target/linux/realtek/files-5.10/arch/mips/include/asm/mach-rtl838x/mach-rtl83xx.h

@@ -229,7 +229,7 @@
 #define RTL838X_LED_GLB_CTRL		(0xA000)
 #define RTL839X_LED_GLB_CTRL		(0x00E4)
 #define RTL9302_LED_GLB_CTRL		(0xcc00)
-#define RTL930X_LED_GLB_CTRL		(0xC400)
+#define RTL930X_LED_GLB_CTRL		(0xCC00)
 #define RTL931X_LED_GLB_CTRL		(0x0600)
 
 #define RTL838X_EXT_GPIO_DIR		(0xA08C)

target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/common.c

@@ -8,6 +8,7 @@
 #include <net/netevent.h>
 #include <linux/inetdevice.h>
 #include <linux/rhashtable.h>
+#include <linux/of_net.h>
 
 #include <asm/mach-rtl838x/mach-rtl83xx.h>
 #include "rtl83xx.h"
@@ -310,6 +311,9 @@ static int __init rtl83xx_mdio_probe(struct rtl838x_switch_priv *priv)
 	}
 
 	for_each_node_by_name(dn, "port") {
+		phy_interface_t interface;
+		u32 led_set;
+
 		if (of_property_read_u32(dn, "reg", &pn))
 			continue;
 
@@ -321,6 +325,28 @@ static int __init rtl83xx_mdio_probe(struct rtl838x_switch_priv *priv)
 			continue;
 		}
 
+		pr_info("%s port %d has phandle\n", __func__, pn);
+		if (of_property_read_u32(phy_node, "sds", &priv->ports[pn].sds_num))
+			priv->ports[pn].sds_num = -1;
+		else {
+			pr_info("%s sds port %d is %d\n", __func__, pn,
+				priv->ports[pn].sds_num);
+		}
+		pr_info("%s port %d has SDS\n", __func__, priv->ports[pn].sds_num);
+
+		if (of_get_phy_mode(dn, &interface))
+			interface = PHY_INTERFACE_MODE_NA;
+		if (interface == PHY_INTERFACE_MODE_HSGMII)
+			priv->ports[pn].is2G5 = true;
+		if (interface == PHY_INTERFACE_MODE_USXGMII)
+			priv->ports[pn].is2G5 = priv->ports[pn].is10G = true;
+		if (interface == PHY_INTERFACE_MODE_10GBASER)
+			priv->ports[pn].is10G = true;
+
+		if (of_property_read_u32(dn, "led-set", &led_set))
+			led_set = 0;
+		priv->ports[pn].led_set = led_set;
+
 		// Check for the integrated SerDes of the RTL8380M first
 		if (of_property_read_bool(phy_node, "phy-is-integrated")
 		    && priv->id == 0x8380 && pn >= 24) {
@@ -356,12 +382,6 @@ static int __init rtl83xx_mdio_probe(struct rtl838x_switch_priv *priv)
 		}
 	}
 
-	// TODO: Do this needs to come from the .dts
-	if (priv->family_id == RTL9300_FAMILY_ID) {
-		priv->ports[24].is2G5 = true;
-		priv->ports[25].is2G5 = true;
-	}
-
 	/* Disable MAC polling the PHY so that we can start configuration */
 	priv->r->set_port_reg_le(0ULL, priv->r->smi_poll_ctrl);
 

target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/dsa.c

@@ -258,6 +258,8 @@ static int rtl93xx_setup(struct dsa_switch *ds)
 
 	priv->r->pie_init(priv);
 
+	priv->r->led_init(priv);
+
 	return 0;
 }
 

target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl838x.h

@@ -518,6 +518,7 @@ typedef enum {
 #define RTL931X_ACL_PORT_LOOKUP_CTRL(p)		(0x44F8 + (((p) << 2)))
 
 #define RTL930X_PIE_BLK_PHASE_CTRL		(0xA5A4)
+#define RTL931X_PIE_BLK_PHASE_CTRL		(0x4184)
 
 // PIE actions
 #define PIE_ACT_COPY_TO_PORT	2
@@ -554,6 +555,23 @@ typedef enum {
 #define RTL930X_L3_HW_LU_CTRL			(0xACC0)
 #define RTL930X_L3_IP_ROUTE_CTRL		0xab44
 
+/* Port LED Control */
+#define RTL930X_LED_PORT_NUM_CTRL(p)		(0xCC04 + (((p >> 4) << 2)))
+#define RTL930X_LED_SET0_0_CTRL			(0xCC28)
+#define RTL930X_LED_PORT_COPR_SET_SEL_CTRL(p)	(0xCC2C + (((p >> 4) << 2)))
+#define RTL930X_LED_PORT_FIB_SET_SEL_CTRL(p)	(0xCC34 + (((p >> 4) << 2)))
+#define RTL930X_LED_PORT_COPR_MASK_CTRL		(0xCC3C)
+#define RTL930X_LED_PORT_FIB_MASK_CTRL		(0xCC40)
+#define RTL930X_LED_PORT_COMBO_MASK_CTRL	(0xCC44)
+
+#define RTL931X_LED_PORT_NUM_CTRL(p)		(0x0604 + (((p >> 4) << 2)))
+#define RTL931X_LED_SET0_0_CTRL			(0x0630)
+#define RTL931X_LED_PORT_COPR_SET_SEL_CTRL(p)	(0x0634 + (((p >> 4) << 2)))
+#define RTL931X_LED_PORT_FIB_SET_SEL_CTRL(p)	(0x0644 + (((p >> 4) << 2)))
+#define RTL931X_LED_PORT_COPR_MASK_CTRL		(0x0654)
+#define RTL931X_LED_PORT_FIB_MASK_CTRL		(0x065c)
+#define RTL931X_LED_PORT_COMBO_MASK_CTRL	(0x0664)
+
 #define MAX_VLANS 4096
 #define MAX_LAGS 16
 #define MAX_PRIOS 8
@@ -605,6 +623,7 @@ struct rtl838x_port {
 	bool is10G;
 	bool is2G5;
 	int sds_num;
+	int led_set;
 	const struct dsa_port *dp;
 };
 
@@ -1017,6 +1036,7 @@ struct rtl838x_reg {
 	void (*set_l3_egress_intf)(int idx, struct rtl838x_l3_intf *intf);
 	void (*set_distribution_algorithm)(int group, int algoidx, u32 algomask);
 	void (*set_receive_management_action)(int port, rma_ctrl_t type, action_type_t action);
+	void (*led_init)(struct rtl838x_switch_priv *priv);
 };
 
 struct rtl838x_switch_priv {

target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl930x.c

@@ -2400,6 +2400,67 @@ void rtl930x_set_distribution_algorithm(int group, int algoidx, u32 algomsk)
 	sw_w32(newmask << l3shift, RTL930X_TRK_HASH_CTRL + (algoidx << 2));
 }
 
+static void rtl930x_led_init(struct rtl838x_switch_priv *priv)
+{
+	int i, pos;
+	u32 v, pm = 0, set;
+	u32 setlen;
+	const __be32 *led_set;
+	char set_name[9];
+	struct device_node *node;
+
+	pr_info("%s called\n", __func__);
+	node = of_find_compatible_node(NULL, NULL, "realtek,rtl9300-leds");
+	if (!node) {
+		pr_info("%s No compatible LED node found\n", __func__);
+		return;
+	}
+
+	for (i= 0; i < priv->cpu_port; i++) {
+		pos = (i << 1) % 32;
+		sw_w32_mask(0x3 << pos, 0, RTL930X_LED_PORT_FIB_SET_SEL_CTRL(i));
+		sw_w32_mask(0x3 << pos, 0, RTL930X_LED_PORT_COPR_SET_SEL_CTRL(i));
+
+		if (!priv->ports[i].phy)
+			continue;
+
+		v = 0x1;
+		if (priv->ports[i].is10G)
+			v = 0x3;
+		if (priv->ports[i].phy_is_integrated)
+			v = 0x1;
+		sw_w32_mask(0x3 << pos, v << pos, RTL930X_LED_PORT_NUM_CTRL(i));
+
+		pm |= BIT(i);
+
+		set = priv->ports[i].led_set;
+		sw_w32_mask(0, set << pos, RTL930X_LED_PORT_COPR_SET_SEL_CTRL(i));
+		sw_w32_mask(0, set << pos, RTL930X_LED_PORT_FIB_SET_SEL_CTRL(i));
+	}
+
+	for (i = 0; i < 4; i++) {
+		sprintf(set_name, "led_set%d", i);
+		led_set = of_get_property(node, set_name, &setlen);
+		if (!led_set || setlen != 16)
+			break;
+		v = be32_to_cpup(led_set) << 16 | be32_to_cpup(led_set + 1);
+		sw_w32(v, RTL930X_LED_SET0_0_CTRL - 4 - i * 8);
+		v = be32_to_cpup(led_set + 2) << 16 | be32_to_cpup(led_set + 3);
+		sw_w32(v, RTL930X_LED_SET0_0_CTRL - i * 8);
+	}
+
+	// Set LED mode to serial (0x1)
+	sw_w32_mask(0x3, 0x1, RTL930X_LED_GLB_CTRL);
+
+	// Set port type masks
+	sw_w32(pm, RTL930X_LED_PORT_COPR_MASK_CTRL);
+	sw_w32(pm, RTL930X_LED_PORT_FIB_MASK_CTRL);
+	sw_w32(pm, RTL930X_LED_PORT_COMBO_MASK_CTRL);
+
+	for (i = 0; i < 24; i++)
+		pr_info("%s %08x: %08x\n",__func__, 0xbb00cc00 + i * 4, sw_r32(0xcc00 + i * 4));
+}
+
 const struct rtl838x_reg rtl930x_reg = {
 	.mask_port_reg_be = rtl838x_mask_port_reg,
 	.set_port_reg_be = rtl838x_set_port_reg,
@@ -2486,4 +2547,5 @@ const struct rtl838x_reg rtl930x_reg = {
 	.set_l3_router_mac = rtl930x_set_l3_router_mac,
 	.set_l3_egress_intf = rtl930x_set_l3_egress_intf,
 	.set_distribution_algorithm = rtl930x_set_distribution_algorithm,
+	.led_init = rtl930x_led_init,
 };

target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl931x.c

@@ -1424,7 +1424,7 @@ static void rtl931x_pie_init(struct rtl838x_switch_priv *priv)
 	// 4: Ingress Flow Table 3, 5: Egress flow table 0
 	for (i = 0; i < priv->n_pie_blocks; i++) {
 		int pos = (i % 10) * 3;
-		u32 r = RTL930X_PIE_BLK_PHASE_CTRL + 4 * (i / 10);
+		u32 r = RTL931X_PIE_BLK_PHASE_CTRL + 4 * (i / 10);
 
 		if (i < priv->n_pie_blocks / 2)
 			sw_w32_mask(0x7 << pos, 0, r);
@@ -1527,6 +1527,68 @@ void rtl931x_set_distribution_algorithm(int group, int algoidx, u32 algomsk)
 	sw_w32(newmask << l3shift, RTL931X_TRK_HASH_CTRL + (algoidx << 2));
 }
 
+static void rtl931x_led_init(struct rtl838x_switch_priv *priv)
+{
+	int i, pos;
+	u32 v, set;
+	u64 pm_copper = 0, pm_fiber = 0;
+	u32 setlen;
+	const __be32 *led_set;
+	char set_name[9];
+	struct device_node *node;
+
+	pr_info("%s called\n", __func__);
+	node = of_find_compatible_node(NULL, NULL, "realtek,rtl9300-leds");
+	if (!node) {
+		pr_info("%s No compatible LED node found\n", __func__);
+		return;
+	}
+
+	for (i= 0; i < priv->cpu_port; i++) {
+		pos = (i << 1) % 32;
+		sw_w32_mask(0x3 << pos, 0, RTL931X_LED_PORT_FIB_SET_SEL_CTRL(i));
+		sw_w32_mask(0x3 << pos, 0, RTL931X_LED_PORT_COPR_SET_SEL_CTRL(i));
+
+		if (!priv->ports[i].phy)
+			continue;
+
+		v = 0x1; // Found on the EdgeCore, but we do not have any HW description
+		sw_w32_mask(0x3 << pos, v << pos, RTL931X_LED_PORT_NUM_CTRL(i));
+
+		if (priv->ports[i].phy_is_integrated)
+		pm_fiber |= BIT_ULL(i);
+			else
+		pm_copper |= BIT_ULL(i);
+
+		set = priv->ports[i].led_set;
+		sw_w32_mask(0, set << pos, RTL931X_LED_PORT_COPR_SET_SEL_CTRL(i));
+		sw_w32_mask(0, set << pos, RTL931X_LED_PORT_FIB_SET_SEL_CTRL(i));
+	}
+
+	for (i = 0; i < 4; i++) {
+		sprintf(set_name, "led_set%d", i);
+		pr_info(">%s<\n", set_name);
+		led_set = of_get_property(node, set_name, &setlen);
+		if (!led_set || setlen != 16)
+			break;
+		v = be32_to_cpup(led_set) << 16 | be32_to_cpup(led_set + 1);
+		sw_w32(v, RTL931X_LED_SET0_0_CTRL - 4 - i * 8);
+		v = be32_to_cpup(led_set + 2) << 16 | be32_to_cpup(led_set + 3);
+		sw_w32(v, RTL931X_LED_SET0_0_CTRL - i * 8);
+	}
+
+	// Set LED mode to serial (0x1)
+	sw_w32_mask(0x3, 0x1, RTL931X_LED_GLB_CTRL);
+
+	rtl839x_set_port_reg_le(pm_copper, RTL931X_LED_PORT_COPR_MASK_CTRL);
+	rtl839x_set_port_reg_le(pm_fiber, RTL931X_LED_PORT_FIB_MASK_CTRL);
+	rtl839x_set_port_reg_le(pm_copper | pm_fiber, RTL931X_LED_PORT_COMBO_MASK_CTRL);
+
+	for (i = 0; i < 32; i++)
+		pr_info("%s %08x: %08x\n",__func__, 0xbb000600 + i * 4, sw_r32(0x0600 + i * 4));
+
+}
+
 const struct rtl838x_reg rtl931x_reg = {
 	.mask_port_reg_be = rtl839x_mask_port_reg_be,
 	.set_port_reg_be = rtl839x_set_port_reg_be,
@@ -1594,5 +1656,6 @@ const struct rtl838x_reg rtl931x_reg = {
 	.pie_rule_rm = rtl931x_pie_rule_rm,
 	.l2_learning_setup = rtl931x_l2_learning_setup,
 	.l3_setup = rtl931x_l3_setup,
+	.led_init = rtl931x_led_init,
 };