ravb: Add ptp_cfg_active to struct ravb_hw_info

There are some H/W differences for the gPTP feature between
R-Car Gen3, R-Car Gen2, and RZ/G2L as below.

1) On R-Car Gen3, gPTP support is active in config mode.
2) On R-Car Gen2, gPTP support is not active in config mode.
3) RZ/G2L does not support the gPTP feature.

Add a ptp_cfg_active hw feature bit to struct ravb_hw_info for
supporting gPTP active in config mode for R-Car Gen3.
This patch also removes enum ravb_chip_id, chip_id from both
struct ravb_hw_info and struct ravb_private, as it is unused.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/renesas/ravb.h

@@ -979,17 +979,11 @@ struct ravb_ptp {
 	struct ravb_ptp_perout perout[N_PER_OUT];
 };
 
-enum ravb_chip_id {
-	RCAR_GEN2,
-	RCAR_GEN3,
-};
-
 struct ravb_hw_info {
 	const char (*gstrings_stats)[ETH_GSTRING_LEN];
 	size_t gstrings_size;
 	netdev_features_t net_hw_features;
 	netdev_features_t net_features;
-	enum ravb_chip_id chip_id;
 	int stats_len;
 	size_t max_rx_len;
 	unsigned aligned_tx: 1;
@@ -999,6 +993,7 @@ struct ravb_hw_info {
 	unsigned tx_counters:1;		/* E-MAC has TX counters */
 	unsigned multi_irqs:1;		/* AVB-DMAC and E-MAC has multiple irqs */
 	unsigned no_ptp_cfg_active:1;	/* AVB-DMAC does not support gPTP active in config mode */
+	unsigned ptp_cfg_active:1;	/* AVB-DMAC has gPTP support active in config mode */
 };
 
 struct ravb_private {
@@ -1042,7 +1037,6 @@ struct ravb_private {
 	int msg_enable;
 	int speed;
 	int emac_irq;
-	enum ravb_chip_id chip_id;
 	int rx_irqs[NUM_RX_QUEUE];
 	int tx_irqs[NUM_TX_QUEUE];
 

drivers/net/ethernet/renesas/ravb_main.c

@@ -1941,12 +1941,12 @@ static const struct ravb_hw_info ravb_gen3_hw_info = {
 	.gstrings_size = sizeof(ravb_gstrings_stats),
 	.net_hw_features = NETIF_F_RXCSUM,
 	.net_features = NETIF_F_RXCSUM,
-	.chip_id = RCAR_GEN3,
 	.stats_len = ARRAY_SIZE(ravb_gstrings_stats),
 	.max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1,
 	.internal_delay = 1,
 	.tx_counters = 1,
 	.multi_irqs = 1,
+	.ptp_cfg_active = 1,
 };
 
 static const struct ravb_hw_info ravb_gen2_hw_info = {
@@ -1954,7 +1954,6 @@ static const struct ravb_hw_info ravb_gen2_hw_info = {
 	.gstrings_size = sizeof(ravb_gstrings_stats),
 	.net_hw_features = NETIF_F_RXCSUM,
 	.net_features = NETIF_F_RXCSUM,
-	.chip_id = RCAR_GEN2,
 	.stats_len = ARRAY_SIZE(ravb_gstrings_stats),
 	.max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1,
 	.aligned_tx = 1,
@@ -2152,8 +2151,6 @@ static int ravb_probe(struct platform_device *pdev)
 		}
 	}
 
-	priv->chip_id = info->chip_id;
-
 	priv->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(priv->clk)) {
 		error = PTR_ERR(priv->clk);
@@ -2216,7 +2213,7 @@ static int ravb_probe(struct platform_device *pdev)
 	INIT_LIST_HEAD(&priv->ts_skb_list);
 
 	/* Initialise PTP Clock driver */
-	if (info->chip_id != RCAR_GEN2)
+	if (info->ptp_cfg_active)
 		ravb_ptp_init(ndev, pdev);
 
 	/* Debug message level */
@@ -2264,7 +2261,7 @@ static int ravb_probe(struct platform_device *pdev)
 			  priv->desc_bat_dma);
 
 	/* Stop PTP Clock driver */
-	if (info->chip_id != RCAR_GEN2)
+	if (info->ptp_cfg_active)
 		ravb_ptp_stop(ndev);
 out_disable_refclk:
 	clk_disable_unprepare(priv->refclk);
@@ -2280,9 +2277,10 @@ static int ravb_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct ravb_private *priv = netdev_priv(ndev);
+	const struct ravb_hw_info *info = priv->info;
 
 	/* Stop PTP Clock driver */
-	if (priv->chip_id != RCAR_GEN2)
+	if (info->ptp_cfg_active)
 		ravb_ptp_stop(ndev);
 
 	clk_disable_unprepare(priv->refclk);