net: ravb: Fix lack of register setting after system resumed for Gen3

[ Upstream commit c2b6cdee1d13ffbb24baca3c9b8a572d6b541e4e ]

After system entered Suspend to RAM, registers setting of this
hardware is reset because the SoC will be turned off. On R-Car Gen3
(info->ccc_gac), ravb_ptp_init() is called in ravb_probe() only. So,
after system resumed, it lacks of the initial settings for ptp. So,
add ravb_ptp_{init,stop}() into ravb_{resume,suspend}().

Fixes: f5d7837f96e5 ("ravb: ptp: Add CONFIG mode support")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index dcb18f1..0461895 100644 (file)
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -2446,6 +2446,9 @@ static int __maybe_unused ravb_suspend(struct device *dev)
        else
                ret = ravb_close(ndev);
 
+       if (priv->info->ccc_gac)
+               ravb_ptp_stop(ndev);
+
        return ret;
 }
 
@@ -2482,6 +2485,9 @@ static int __maybe_unused ravb_resume(struct device *dev)
        /* Restore descriptor base address table */
        ravb_write(ndev, priv->desc_bat_dma, DBAT);
 
+       if (priv->info->ccc_gac)
+               ravb_ptp_init(ndev, priv->pdev);
+
        if (netif_running(ndev)) {
                if (priv->wol_enabled) {
                        ret = ravb_wol_restore(ndev);