netdev - [RFC 6/8] net-next: ralink: add support for rt3883

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Date:	Sun, 22 Nov 2015 09:40:56 +0100
From:	John Crispin <blogic@...nwrt.org>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, Michael Lee <igvtee@...il.com>,
	Felix Fietkau <nbd@...nwrt.org>,
	Steven Liu (劉人豪) 
	<steven.liu@...iatek.com>,
	Fred Chang (張嘉宏) 
	<Fred.Chang@...iatek.com>, John Crispin <blogic@...nwrt.org>
Subject: [RFC 6/8] net-next: ralink: add support for rt3883

Add support for rt3883 and its smaller version rt3662. They both have a single
gBit port that will normally be attached to an external phy of switch.

Signed-off-by: John Crispin <blogic@...nwrt.org>
Signed-off-by: Felix Fietkau <nbd@...nwrt.org>
Signed-off-by: Michael Lee <igvtee@...il.com>
---
 drivers/net/ethernet/ralink/soc_rt3883.c |   75 ++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 drivers/net/ethernet/ralink/soc_rt3883.c

diff --git a/drivers/net/ethernet/ralink/soc_rt3883.c b/drivers/net/ethernet/ralink/soc_rt3883.c
new file mode 100644
index 0000000..f7b6769
--- /dev/null
+++ b/drivers/net/ethernet/ralink/soc_rt3883.c
@@ -0,0 +1,75 @@
+/*   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; version 2 of the License
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   Copyright (C) 2009-2015 John Crispin <blogic@...nwrt.org>
+ *   Copyright (C) 2009-2015 Felix Fietkau <nbd@...nwrt.org>
+ *   Copyright (C) 2013-2015 Michael Lee <igvtee@...il.com>
+ */
+
+#include <linux/module.h>
+
+#include <asm/mach-ralink/ralink_regs.h>
+
+#include "ralink_soc_eth.h"
+#include "mdio_rt2880.h"
+
+#define RT3883_RSTCTRL_FE		BIT(21)
+
+static void rt3883_fe_reset(void)
+{
+	fe_reset(RT3883_RSTCTRL_FE);
+}
+
+static int rt3883_fwd_config(struct fe_priv *priv)
+{
+	int ret;
+
+	ret = fe_set_clock_cycle(priv);
+	if (ret)
+		return ret;
+
+	fe_fwd_config(priv);
+	fe_w32(FE_PSE_FQFC_CFG_256Q, FE_PSE_FQ_CFG);
+	fe_csum_config(priv);
+
+	return ret;
+}
+
+static void rt3883_init_data(struct fe_soc_data *data,
+			     struct net_device *netdev)
+{
+	struct fe_priv *priv = netdev_priv(netdev);
+
+	priv->flags = FE_FLAG_PADDING_64B | FE_FLAG_PADDING_BUG |
+		FE_FLAG_JUMBO_FRAME;
+	netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
+		NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_TX;
+}
+
+static struct fe_soc_data rt3883_data = {
+	.init_data = rt3883_init_data,
+	.reset_fe = rt3883_fe_reset,
+	.fwd_config = rt3883_fwd_config,
+	.pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
+	.rx_int = FE_RX_DONE_INT,
+	.tx_int = FE_TX_DONE_INT,
+	.status_int = FE_CNT_GDM_AF,
+	.checksum_bit = RX_DMA_L4VALID,
+	.mdio_read = rt2880_mdio_read,
+	.mdio_write = rt2880_mdio_write,
+	.mdio_adjust_link = rt2880_mdio_link_adjust,
+	.port_init = rt2880_port_init,
+};
+
+const struct of_device_id of_fe_match[] = {
+	{ .compatible = "ralink,rt3883-eth", .data = &rt3883_data },
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, of_fe_match);
-- 
1.7.10.4
--
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