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From b6be512663a34f85e79bd6dd6caeece57d9f6fe0 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Wed, 21 Mar 2018 15:59:26 +0000
Subject: [PATCH 257/454] lan78xx: Read LED states from Device Tree
Add support for DT property "microchip,led-modes", a vector of two
cells (u32s) in the range 0-15, each of which sets the mode for one
of the two LEDs. The possible values are:
0=link/activity 1=link1000/activity
2=link100/activity 3=link10/activity
4=link100/1000/activity 5=link10/1000/activity
6=link10/100/activity 14=off 15=on
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
drivers/net/usb/lan78xx.c | 27 +++++++++++++++++++--------
1 file changed, 19 insertions(+), 8 deletions(-)
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -1998,7 +1998,9 @@ static int lan78xx_phy_init(struct lan78
{
int ret;
u32 mii_adv;
- u32 led_modes;
+ u32 led_modes[2];
+ u32 led_modes_reg;
+ int i;
struct phy_device *phydev = dev->net->phydev;
phydev = phy_find_first(dev->mdiobus);
@@ -2071,18 +2073,27 @@ static int lan78xx_phy_init(struct lan78
mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control);
phydev->advertising |= mii_adv_to_ethtool_adv_t(mii_adv);
- /* Change LED defaults:
- * orange = link1000/activity
- * green = link10/link100/activity
+ /* Set LED modes:
* led: 0=link/activity 1=link1000/activity
* 2=link100/activity 3=link10/activity
* 4=link100/1000/activity 5=link10/1000/activity
* 6=link10/100/activity 14=off 15=on
*/
- led_modes = phy_read(phydev, 0x1d);
- led_modes &= ~0xff;
- led_modes |= (1 << 0) | (6 << 4);
- (void)phy_write(phydev, 0x1d, led_modes);
+
+ memset(led_modes, ~0, sizeof(led_modes));
+
+ of_property_read_u32_array(dev->udev->dev.of_node,
+ "microchip,led-modes",
+ led_modes, ARRAY_SIZE(led_modes));
+
+ led_modes_reg = phy_read(phydev, 0x1d);
+ for (i = 0; i < ARRAY_SIZE(led_modes); i++) {
+ if (led_modes[i] != ~0) {
+ led_modes_reg &= ~(0xf << (i * 4));
+ led_modes_reg |= (led_modes[i] & 0xf) << (i * 4);
+ }
+ }
+ (void)phy_write(phydev, 0x1d, led_modes_reg);
genphy_config_aneg(phydev);
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