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authorBiju Das <biju.das.jz@bp.renesas.com>2021-08-18 22:07:59 +0300
committerDavid S. Miller <davem@davemloft.net>2021-08-19 14:05:16 +0300
commit8bc4caa0abafd83e25df2a3b1b03480aab071ee1 (patch)
treefa0c27adc6bb1f59a4a05551ccebefcdeb1989c5 /drivers/net
parent8912ed25daf6fc811c71ac30794822c824017c0f (diff)
downloadlinux-8bc4caa0abafd83e25df2a3b1b03480aab071ee1.tar.xz
ravb: Add internal delay hw feature to struct ravb_hw_info
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>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/ethernet/renesas/ravb.h3
-rw-r--r--drivers/net/ethernet/renesas/ravb_main.c6
2 files changed, 7 insertions, 2 deletions
diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index 85eb3c69ac32..65a13ad458e6 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -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 {
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 6b209ad19de7..2fe4b9231523 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -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 */