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Date:   Thu, 22 Jul 2021 15:13:45 +0100
From:   Biju Das <biju.das.jz@...renesas.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Biju Das <biju.das.jz@...renesas.com>,
        Sergei Shtylyov <sergei.shtylyov@...il.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Sergey Shtylyov <s.shtylyov@...russia.ru>,
        Adam Ford <aford173@...il.com>, Andrew Lunn <andrew@...n.ch>,
        Yuusuke Ashizuka <ashiduka@...itsu.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Chris Paterson <Chris.Paterson2@...esas.com>,
        Biju Das <biju.das@...renesas.com>,
        Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH net-next 12/18] ravb: Factorise {emac,dmac} init function

The R-Car AVB module has Magic packet detection, multiple irq's and
timestamp enable features which is not present on RZ/G2L Gigabit
Ethernet module. Factorise emac and dmac initialization function to
support the later SoC.

Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 drivers/net/ethernet/renesas/ravb.h      |  2 +
 drivers/net/ethernet/renesas/ravb_main.c | 58 ++++++++++++++++--------
 2 files changed, 40 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index d82bfa6e57c1..4d5910dcda86 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -992,6 +992,8 @@ struct ravb_ops {
 	void (*ring_free)(struct net_device *ndev, int q);
 	void (*ring_format)(struct net_device *ndev, int q);
 	bool (*alloc_rx_desc)(struct net_device *ndev, int q);
+	void (*emac_init)(struct net_device *ndev);
+	void (*dmac_init)(struct net_device *ndev);
 };
 
 struct ravb_drv_data {
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 3d0f6598b936..e200114376e4 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -454,7 +454,7 @@ static int ravb_ring_init(struct net_device *ndev, int q)
 }
 
 /* E-MAC init function */
-static void ravb_emac_init(struct net_device *ndev)
+static void ravb_emac_init_ex(struct net_device *ndev)
 {
 	/* Receive frame limit set register */
 	ravb_write(ndev, ndev->mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN, RFLR);
@@ -480,30 +480,19 @@ static void ravb_emac_init(struct net_device *ndev)
 	ravb_write(ndev, ECSIPR_ICDIP | ECSIPR_MPDIP | ECSIPR_LCHNGIP, ECSIPR);
 }
 
-/* Device init function for Ethernet AVB */
-static int ravb_dmac_init(struct net_device *ndev)
+static void ravb_emac_init(struct net_device *ndev)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
 	const struct ravb_drv_data *info = priv->info;
-	int error;
 
-	/* Set CONFIG mode */
-	error = ravb_config(ndev);
-	if (error)
-		return error;
-
-	error = ravb_ring_init(ndev, RAVB_BE);
-	if (error)
-		return error;
-	error = ravb_ring_init(ndev, RAVB_NC);
-	if (error) {
-		ravb_ring_free(ndev, RAVB_BE);
-		return error;
-	}
+	info->ravb_ops->emac_init(ndev);
+}
 
-	/* Descriptor format */
-	ravb_ring_format(ndev, RAVB_BE);
-	ravb_ring_format(ndev, RAVB_NC);
+/* Device init function for Ethernet AVB */
+static void ravb_dmac_init_ex(struct net_device *ndev)
+{
+	struct ravb_private *priv = netdev_priv(ndev);
+	const struct ravb_drv_data *info = priv->info;
 
 	/* Set AVB RX */
 	ravb_write(ndev,
@@ -530,6 +519,33 @@ static int ravb_dmac_init(struct net_device *ndev)
 	ravb_write(ndev, RIC2_QFE0 | RIC2_QFE1 | RIC2_RFFE, RIC2);
 	/* Frame transmitted, timestamp FIFO updated */
 	ravb_write(ndev, TIC_FTE0 | TIC_FTE1 | TIC_TFUE, TIC);
+}
+
+static int ravb_dmac_init(struct net_device *ndev)
+{
+	struct ravb_private *priv = netdev_priv(ndev);
+	const struct ravb_drv_data *info = priv->info;
+	int error;
+
+	/* Set CONFIG mode */
+	error = ravb_config(ndev);
+	if (error)
+		return error;
+
+	error = ravb_ring_init(ndev, RAVB_BE);
+	if (error)
+		return error;
+	error = ravb_ring_init(ndev, RAVB_NC);
+	if (error) {
+		ravb_ring_free(ndev, RAVB_BE);
+		return error;
+	}
+
+	/* Descriptor format */
+	ravb_ring_format(ndev, RAVB_BE);
+	ravb_ring_format(ndev, RAVB_NC);
+
+	info->ravb_ops->dmac_init(ndev);
 
 	/* Setting the control will start the AVB-DMAC process. */
 	ravb_modify(ndev, CCC, CCC_OPC, CCC_OPC_OPERATION);
@@ -2018,6 +2034,8 @@ static const struct ravb_ops ravb_gen3_ops = {
 	.ring_free = ravb_ring_free_rx,
 	.ring_format = ravb_ring_format_rx,
 	.alloc_rx_desc = ravb_alloc_rx_desc,
+	.emac_init = ravb_emac_init_ex,
+	.dmac_init = ravb_dmac_init_ex,
 };
 
 static const struct ravb_drv_data ravb_gen3_data = {
-- 
2.17.1

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