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

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>

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index b4e0fc7f65bdfed65e376351f0bf7b30cb3734c6..3f61100c02f4f1864bc955259e1d1a3c427a822a 100644 (file)
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -2973,6 +2973,9 @@ 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;
 }
 
@@ -3011,6 +3014,9 @@ 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);