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[net-next,RESEND,5/5] net: stmmac: dwmac-sun8i: Add a shutdown callback

Message ID 20210208062859.11429-7-samuel@sholland.org (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series dwmac-sun8i cleanup and shutdown hook | expand

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Commit Message

Samuel Holland Feb. 8, 2021, 6:28 a.m. UTC 
The Ethernet MAC and PHY are usually major consumers of power on boards
which may not be able to fully power off (those with no PMIC). Powering
down the MAC and internal PHY saves power while these boards are "off".

Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index 4638d4203af5..926e8d5e8963 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
@@ -1282,6 +1282,15 @@  static int sun8i_dwmac_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static void sun8i_dwmac_shutdown(struct platform_device *pdev)
+{
+	struct net_device *ndev = platform_get_drvdata(pdev);
+	struct stmmac_priv *priv = netdev_priv(ndev);
+	struct sunxi_priv_data *gmac = priv->plat->bsp_priv;
+
+	sun8i_dwmac_exit(pdev, gmac);
+}
+
 static const struct of_device_id sun8i_dwmac_match[] = {
 	{ .compatible = "allwinner,sun8i-h3-emac",
 		.data = &emac_variant_h3 },
@@ -1302,6 +1311,7 @@  MODULE_DEVICE_TABLE(of, sun8i_dwmac_match);
 static struct platform_driver sun8i_dwmac_driver = {
 	.probe  = sun8i_dwmac_probe,
 	.remove = sun8i_dwmac_remove,
+	.shutdown = sun8i_dwmac_shutdown,
 	.driver = {
 		.name           = "dwmac-sun8i",
 		.pm		= &stmmac_pltfr_pm_ops,