From ec6fe1f3510a68ea742758b1cd806a5a08fed7ae Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Tue, 17 Oct 2017 15:04:29 +0100 Subject: [PATCH] lan78xx: Enable LEDs and auto-negotiation For applications of the LAN78xx that don't have valid programmed EEPROMs or OTPs, enabling both LEDs and auto-negotiation by default seems reasonable. Signed-off-by: Phil Elwell --- drivers/net/usb/lan78xx.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -2691,6 +2691,11 @@ static int lan78xx_reset(struct lan78xx_ int ret; u32 buf; u8 sig; + bool has_eeprom; + bool has_otp; + + has_eeprom = !lan78xx_read_eeprom(dev, 0, 0, NULL); + has_otp = !lan78xx_read_otp(dev, 0, 0, NULL); ret = lan78xx_read_reg(dev, HW_CFG, &buf); if (ret < 0) @@ -2772,6 +2777,10 @@ static int lan78xx_reset(struct lan78xx_ buf |= HW_CFG_MEF_; + /* If no valid EEPROM and no valid OTP, enable the LEDs by default */ + if (!has_eeprom && !has_otp) + buf |= HW_CFG_LED0_EN_ | HW_CFG_LED1_EN_; + ret = lan78xx_write_reg(dev, HW_CFG, buf); if (ret < 0) return ret; @@ -2870,6 +2879,9 @@ static int lan78xx_reset(struct lan78xx_ buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_; } } + /* If no valid EEPROM and no valid OTP, enable AUTO negotiation */ + if (!has_eeprom && !has_otp) + buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_; ret = lan78xx_write_reg(dev, MAC_CR, buf); if (ret < 0) return ret;