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ravb: Add internal delay hw feature to struct ravb_hw_info

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R-Car Gen3 supports TX and RX clock internal delay modes, whereas R-Car
Gen2 and RZ/G2L do not support it.
Add an internal_delay hw feature bit to struct ravb_hw_info to enable this
only for R-Car Gen3.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Biju Das
2021-08-18 20:07:59 +01:00
committed by David S. Miller
parent 8912ed25da
commit 8bc4caa0ab
2 changed files with 7 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/ethernet/renesas/ravb.h
View File

@@ -997,6 +997,9 @@ struct ravb_hw_info {
int stats_len;
size_t max_rx_len;
unsigned aligned_tx: 1;
/* hardware features */
unsigned internal_delay:1; /* AVB-DMAC has internal delays */
};
struct ravb_private {

6
drivers/net/ethernet/renesas/ravb_main.c
View File

@@ -1936,6 +1936,7 @@ static const struct ravb_hw_info ravb_gen3_hw_info = {
.chip_id = RCAR_GEN3,
.stats_len = ARRAY_SIZE(ravb_gstrings_stats),
.max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1,
.internal_delay = 1,
};
static const struct ravb_hw_info ravb_gen2_hw_info = {
@@ -2175,7 +2176,7 @@ static int ravb_probe(struct platform_device *pdev)
/* Request GTI loading */
ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI);
if (priv->chip_id != RCAR_GEN2) {
if (info->internal_delay) {
ravb_parse_delay_mode(np, ndev);
ravb_set_delay_mode(ndev);
}
@@ -2348,6 +2349,7 @@ static int __maybe_unused ravb_resume(struct device *dev)
{
struct net_device *ndev = dev_get_drvdata(dev);
struct ravb_private *priv = netdev_priv(ndev);
const struct ravb_hw_info *info = priv->info;
int ret = 0;
/* If WoL is enabled set reset mode to rearm the WoL logic */
@@ -2370,7 +2372,7 @@ static int __maybe_unused ravb_resume(struct device *dev)
/* Request GTI loading */
ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI);
if (priv->chip_id != RCAR_GEN2)
if (info->internal_delay)
ravb_set_delay_mode(ndev);
/* Restore descriptor base address table */