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From b6be512663a34f85e79bd6dd6caeece57d9f6fe0 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Wed, 21 Mar 2018 15:59:26 +0000
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Subject: [PATCH 257/454] lan78xx: Read LED states from Device Tree
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Add support for DT property "microchip,led-modes", a vector of two
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cells (u32s) in the range 0-15, each of which sets the mode for one
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of the two LEDs. The possible values are:
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0=link/activity 1=link1000/activity
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2=link100/activity 3=link10/activity
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4=link100/1000/activity 5=link10/1000/activity
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6=link10/100/activity 14=off 15=on
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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drivers/net/usb/lan78xx.c | 27 +++++++++++++++++++--------
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1 file changed, 19 insertions(+), 8 deletions(-)
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--- a/drivers/net/usb/lan78xx.c
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+++ b/drivers/net/usb/lan78xx.c
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@@ -1996,7 +1996,9 @@ static int lan78xx_phy_init(struct lan78
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{
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int ret;
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u32 mii_adv;
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- u32 led_modes;
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+ u32 led_modes[2];
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+ u32 led_modes_reg;
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+ int i;
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struct phy_device *phydev = dev->net->phydev;
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phydev = phy_find_first(dev->mdiobus);
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@@ -2069,18 +2071,27 @@ static int lan78xx_phy_init(struct lan78
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mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control);
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phydev->advertising |= mii_adv_to_ethtool_adv_t(mii_adv);
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- /* Change LED defaults:
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- * orange = link1000/activity
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- * green = link10/link100/activity
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+ /* Set LED modes:
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* led: 0=link/activity 1=link1000/activity
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* 2=link100/activity 3=link10/activity
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* 4=link100/1000/activity 5=link10/1000/activity
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* 6=link10/100/activity 14=off 15=on
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*/
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- led_modes = phy_read(phydev, 0x1d);
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- led_modes &= ~0xff;
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- led_modes |= (1 << 0) | (6 << 4);
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- (void)phy_write(phydev, 0x1d, led_modes);
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+
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+ memset(led_modes, ~0, sizeof(led_modes));
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+
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+ of_property_read_u32_array(dev->udev->dev.of_node,
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+ "microchip,led-modes",
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+ led_modes, ARRAY_SIZE(led_modes));
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+
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+ led_modes_reg = phy_read(phydev, 0x1d);
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+ for (i = 0; i < ARRAY_SIZE(led_modes); i++) {
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+ if (led_modes[i] != ~0) {
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+ led_modes_reg &= ~(0xf << (i * 4));
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+ led_modes_reg |= (led_modes[i] & 0xf) << (i * 4);
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+ }
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+ }
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+ (void)phy_write(phydev, 0x1d, led_modes_reg);
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genphy_config_aneg(phydev);
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