[PATCH 5.15 230/279] net: stmmac: socfpga: add runtime suspend/resume callback for stratix10 platform

Greg Kroah-Hartman
2021-11-24T14:06:46Z

From: Meng Li <meng.li@windriver.com>

commit 9119570039481d56350af1c636f040fb300b8cf3 upstream.

According to upstream commit 5ec55823438e("net: stmmac:
add clocks management for gmac driver"), it improve clocks
management for stmmac driver. So, it is necessary to implement
the runtime callback in dwmac-socfpga driver because it doesn't
use the common stmmac_pltfr_pm_ops instance. Otherwise, clocks
are not disabled when system enters suspend status.

Fixes: 5ec55823438e ("net: stmmac: add clocks management for gmac driver")
Cc: stable@vger.kernel.org
Signed-off-by: Meng Li <Meng.Li@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c | 24 ++++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -485,8 +485,28 @@ static int socfpga_dwmac_resume(struct d
}
#endif /* CONFIG_PM_SLEEP */

-static SIMPLE_DEV_PM_OPS(socfpga_dwmac_pm_ops, stmmac_suspend,
- socfpga_dwmac_resume);
+static int __maybe_unused socfpga_dwmac_runtime_suspend(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+ struct stmmac_priv *priv = netdev_priv(ndev);
+
+ stmmac_bus_clks_config(priv, false);
+
+ return 0;
+}
+
+static int __maybe_unused socfpga_dwmac_runtime_resume(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+ struct stmmac_priv *priv = netdev_priv(ndev);
+
+ return stmmac_bus_clks_config(priv, true);
+}
+
+static const struct dev_pm_ops socfpga_dwmac_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(stmmac_suspend, socfpga_dwmac_resume)
+ SET_RUNTIME_PM_OPS(socfpga_dwmac_runtime_suspend, socfpga_dwmac_runtime_resume, NULL)
+};

static const struct socfpga_dwmac_ops socfpga_gen5_ops = {
.set_phy_mode = socfpga_gen5_set_phy_mode,