950-0750-net-phy-bcm54xx-Encode-link-speed-and-activity-into-.patch

From b1e290ec968186530ec59479adfba89d2cfe21c8 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <olteanv@gmail.com>
Date: Sun, 24 Mar 2019 00:18:46 +0200
Subject: [PATCH] net: phy: bcm54xx: Encode link speed and activity
 into LEDs

Previously the green and amber LEDs on this quad PHY were solid, to
indicate an encoding of the link speed (10/100/1000).

This keeps the LEDs always on just as before, but now they flash on
Rx/Tx activity.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/phy/broadcom.c | 13 +++++++++++++
 include/linux/brcmphy.h    | 16 ++++++++++++++++
 2 files changed, 29 insertions(+)

--- a/drivers/net/phy/broadcom.c
+++ b/drivers/net/phy/broadcom.c
@@ -345,6 +345,19 @@ static int bcm54xx_config_init(struct ph
 
 	bcm54xx_phydsp_config(phydev);
 
+	/* Encode link speed into LED1 and LED3 pair (green/amber).
+	 * Also flash these two LEDs on activity. This means configuring
+	 * them for MULTICOLOR and encoding link/activity into them.
+	 */
+	val = BCM5482_SHD_LEDS1_LED1(BCM_LED_SRC_MULTICOLOR1) |
+		BCM5482_SHD_LEDS1_LED3(BCM_LED_SRC_MULTICOLOR1);
+	bcm_phy_write_shadow(phydev, BCM5482_SHD_LEDS1, val);
+
+	val = BCM_LED_MULTICOLOR_IN_PHASE |
+		BCM5482_SHD_LEDS1_LED1(BCM_LED_MULTICOLOR_LINK_ACT) |
+		BCM5482_SHD_LEDS1_LED3(BCM_LED_MULTICOLOR_LINK_ACT);
+	bcm_phy_write_exp(phydev, BCM_EXP_MULTICOLOR, val);
+
 	return 0;
 }
 
--- a/include/linux/brcmphy.h
+++ b/include/linux/brcmphy.h
@@ -148,6 +148,22 @@
 #define BCM_LED_SRC_OFF		0xe	/* Tied high */
 #define BCM_LED_SRC_ON		0xf	/* Tied low */
 
+/*
+ * Broadcom Multicolor LED configurations (expansion register 4)
+ */
+#define BCM_EXP_MULTICOLOR		(MII_BCM54XX_EXP_SEL_ER + 0x04)
+#define BCM_LED_MULTICOLOR_IN_PHASE	BIT(8)
+#define BCM_LED_MULTICOLOR_LINK_ACT	0x0
+#define BCM_LED_MULTICOLOR_SPEED	0x1
+#define BCM_LED_MULTICOLOR_ACT_FLASH	0x2
+#define BCM_LED_MULTICOLOR_FDX		0x3
+#define BCM_LED_MULTICOLOR_OFF		0x4
+#define BCM_LED_MULTICOLOR_ON		0x5
+#define BCM_LED_MULTICOLOR_ALT		0x6
+#define BCM_LED_MULTICOLOR_FLASH	0x7
+#define BCM_LED_MULTICOLOR_LINK		0x8
+#define BCM_LED_MULTICOLOR_ACT		0x9
+#define BCM_LED_MULTICOLOR_PROGRAM	0xa
 
 /*
  * BCM5482: Shadow registers