diff mbox series

[v2,3/3] net: phy: realtek: Disable clock on suspend

Message ID 20230602182659.307876-4-detlev.casanova@collabora.com
State New
Headers
Series [v2,1/3] net: phy: realtek: Add optional external PHY clock |

Commit Message

Detlev Casanova June 2, 2023, 6:26 p.m. UTC 
  For PHYs that call rtl821x_probe() where an external clock can be
configured, make sure that the clock is disabled
when ->suspend() is called and enabled on resume.

The PHY_ALWAYS_CALL_SUSPEND is added to ensure that the suspend function
is actually always called.

Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
---
 drivers/net/phy/realtek.c | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

Comments

Florian Fainelli June 2, 2023, 7:11 p.m. UTC | #1 
On 6/2/23 11:26, Detlev Casanova wrote:
> For PHYs that call rtl821x_probe() where an external clock can be
> configured, make sure that the clock is disabled
> when ->suspend() is called and enabled on resume.
> 
> The PHY_ALWAYS_CALL_SUSPEND is added to ensure that the suspend function
> is actually always called.
> 
> Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
diff mbox series

Patch

diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
index b13dd0b3c99e..62eac4835def 100644
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -426,10 +426,28 @@  static int rtl8211f_config_init(struct phy_device *phydev)
 	return genphy_soft_reset(phydev);
 }
 
+static int rtl821x_suspend(struct phy_device *phydev)
+{
+	struct rtl821x_priv *priv = phydev->priv;
+	int ret = genphy_suspend(phydev);
+
+	if (ret)
+		return ret;
+
+	if (!phydev->wol_enabled)
+		clk_disable_unprepare(priv->clk);
+
+	return ret;
+}
+
 static int rtl821x_resume(struct phy_device *phydev)
 {
+	struct rtl821x_priv *priv = phydev->priv;
 	int ret;
 
+	if (!phydev->wol_enabled)
+		clk_prepare_enable(priv->clk);
+
 	ret = genphy_resume(phydev);
 	if (ret < 0)
 		return ret;
@@ -934,10 +952,11 @@  static struct phy_driver realtek_drvs[] = {
 		.read_status	= rtlgen_read_status,
 		.config_intr	= &rtl8211f_config_intr,
 		.handle_interrupt = rtl8211f_handle_interrupt,
-		.suspend	= genphy_suspend,
+		.suspend	= rtl821x_suspend,
 		.resume		= rtl821x_resume,
 		.read_page	= rtl821x_read_page,
 		.write_page	= rtl821x_write_page,
+		.flags		= PHY_ALWAYS_CALL_SUSPEND,
 	}, {
 		PHY_ID_MATCH_EXACT(RTL_8211FVD_PHYID),
 		.name		= "RTL8211F-VD Gigabit Ethernet",
@@ -946,10 +965,11 @@  static struct phy_driver realtek_drvs[] = {
 		.read_status	= rtlgen_read_status,
 		.config_intr	= &rtl8211f_config_intr,
 		.handle_interrupt = rtl8211f_handle_interrupt,
-		.suspend	= genphy_suspend,
+		.suspend	= rtl821x_suspend,
 		.resume		= rtl821x_resume,
 		.read_page	= rtl821x_read_page,
 		.write_page	= rtl821x_write_page,
+		.flags		= PHY_ALWAYS_CALL_SUSPEND,
 	}, {
 		.name		= "Generic FE-GE Realtek PHY",
 		.match_phy_device = rtlgen_match_phy_device,