ath79: use downstream ag71xx for Kernel 5.4

The ag71xx driver from Linux 5.4 currently has various shortcomings
when used with OpenWrt compared to our downstream version.

For example, the upstream driver does not support modifying the ethernet
clock and configuring RGMII delays on the MAC side.

While we should certainly switch to the upstream driver, the amount of
necessary patches would make it cumbersome to work with. It's also
highly likely we won't be able to finish patching the upstream driver in
time for a Linux 5.4 release.

Tested on Siemens WS-AP3610.

CC: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: David Bauer <mail@david-bauer.net>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 0 insertions, 108 deletions

diff --git a/target/linux/ath79/files-4.19/drivers/net/ethernet/atheros/ag71xx/ag71xx_ethtool.c b/target/linux/ath79/files-4.19/drivers/net/ethernet/atheros/ag71xx/ag71xx_ethtool.c
deleted file mode 100644
index 2cd7b1be83..0000000000
--- a/target/linux/ath79/files-4.19/drivers/net/ethernet/atheros/ag71xx/ag71xx_ethtool.c
+++ /dev/null
@@ -1,108 +0,0 @@
-/*
- *  Atheros AR71xx built-in ethernet mac driver
- *
- *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
- *
- *  Based on Atheros' AG7100 driver
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- */
-
-#include "ag71xx.h"
-
-static u32 ag71xx_ethtool_get_msglevel(struct net_device *dev)
-{
-	struct ag71xx *ag = netdev_priv(dev);
-
-	return ag->msg_enable;
-}
-
-static void ag71xx_ethtool_set_msglevel(struct net_device *dev, u32 msg_level)
-{
-	struct ag71xx *ag = netdev_priv(dev);
-
-	ag->msg_enable = msg_level;
-}
-
-static void ag71xx_ethtool_get_ringparam(struct net_device *dev,
-					 struct ethtool_ringparam *er)
-{
-	struct ag71xx *ag = netdev_priv(dev);
-
-	er->tx_max_pending = AG71XX_TX_RING_SIZE_MAX;
-	er->rx_max_pending = AG71XX_RX_RING_SIZE_MAX;
-	er->rx_mini_max_pending = 0;
-	er->rx_jumbo_max_pending = 0;
-
-	er->tx_pending = BIT(ag->tx_ring.order);
-	er->rx_pending = BIT(ag->rx_ring.order);
-	er->rx_mini_pending = 0;
-	er->rx_jumbo_pending = 0;
-
-	if (ag->tx_ring.desc_split)
-		er->tx_pending /= AG71XX_TX_RING_DS_PER_PKT;
-}
-
-static int ag71xx_ethtool_set_ringparam(struct net_device *dev,
-					struct ethtool_ringparam *er)
-{
-	struct ag71xx *ag = netdev_priv(dev);
-	unsigned tx_size;
-	unsigned rx_size;
-	int err = 0;
-
-	if (er->rx_mini_pending != 0||
-	    er->rx_jumbo_pending != 0 ||
-	    er->rx_pending == 0 ||
-	    er->tx_pending == 0)
-		return -EINVAL;
-
-	tx_size = er->tx_pending < AG71XX_TX_RING_SIZE_MAX ?
-		  er->tx_pending : AG71XX_TX_RING_SIZE_MAX;
-
-	rx_size = er->rx_pending < AG71XX_RX_RING_SIZE_MAX ?
-		  er->rx_pending : AG71XX_RX_RING_SIZE_MAX;
-
-	if (netif_running(dev)) {
-		err = dev->netdev_ops->ndo_stop(dev);
-		if (err)
-			return err;
-	}
-
-	if (ag->tx_ring.desc_split)
-		tx_size *= AG71XX_TX_RING_DS_PER_PKT;
-
-	ag->tx_ring.order = ag71xx_ring_size_order(tx_size);
-	ag->rx_ring.order = ag71xx_ring_size_order(rx_size);
-
-	if (netif_running(dev))
-		err = dev->netdev_ops->ndo_open(dev);
-
-	return err;
-}
-
-static int ag71xx_ethtool_nway_reset(struct net_device *dev)
-{
-	struct ag71xx *ag = netdev_priv(dev);
-	struct phy_device *phydev = ag->phy_dev;
-
-	if (!phydev)
-		return -ENODEV;
-
-	return genphy_restart_aneg(phydev);
-}
-
-struct ethtool_ops ag71xx_ethtool_ops = {
-	.get_msglevel	= ag71xx_ethtool_get_msglevel,
-	.set_msglevel	= ag71xx_ethtool_set_msglevel,
-	.get_ringparam	= ag71xx_ethtool_get_ringparam,
-	.set_ringparam	= ag71xx_ethtool_set_ringparam,
-	.get_link_ksettings = phy_ethtool_get_link_ksettings,
-	.set_link_ksettings = phy_ethtool_set_link_ksettings,
-	.get_link	= ethtool_op_get_link,
-	.get_ts_info	= ethtool_op_get_ts_info,
-	.nway_reset	= ag71xx_ethtool_nway_reset,
-};