diff mbox series

[net-next,v2] net: phy: dp8382x: keep WOL settings across suspends

Message ID 20240328133358.30544-1-catalin.popescu@leica-geosystems.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series [net-next,v2] net: phy: dp8382x: keep WOL settings across suspends | expand

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Context Check Description
netdev/series_format success Single patches do not need cover letters
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 944 this patch: 944
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 7 of 7 maintainers
netdev/build_clang success Errors and warnings before: 955 this patch: 955
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 955 this patch: 955
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 76 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-03-31--03-00 (tests: 953)

Commit Message

POPESCU Catalin March 28, 2024, 1:33 p.m. UTC 
Unlike other ethernet PHYs from TI, PHY dp8382x has WOL enabled
at reset. The driver explicitly disables WOL in config_init callback
which is called during init and during resume from suspend. Hence,
WOL is unconditionally disabled during resume, even if it was enabled
before the suspend. We make sure that WOL configuration is persistent
across suspends.

Signed-off-by: Catalin Popescu <catalin.popescu@leica-geosystems.com>
---
Changes in v2:
 - store the whole WoL settings not only the wol_enabled flag
 - in config_init, reconfigure WoL from stored settings, overriding
   any setting from BIOS/bootloader
 - fix device name in commit message (dp8382x vs dp83822x)
---
 drivers/net/phy/dp83822.c | 37 ++++++++++++++++++++++++-------------
 1 file changed, 24 insertions(+), 13 deletions(-)


base-commit: a6bd6c9333397f5a0e2667d4d82fef8c970108f2
prerequisite-patch-id: 0000000000000000000000000000000000000000

Comments

Jakub Kicinski April 3, 2024, 12:45 a.m. UTC | #1 
On Thu, 28 Mar 2024 14:33:58 +0100 Catalin Popescu wrote:
> -static int dp83822_set_wol(struct phy_device *phydev,
> -			   struct ethtool_wolinfo *wol)
> +static int _dp83822_set_wol(struct phy_device *phydev,
> +			    struct ethtool_wolinfo *wol)

Why the underscore, you can all this any number of things maybe
dp83822_config_wol() or dp83822_apply_wol()?
POPESCU Catalin April 3, 2024, 7:15 a.m. UTC | #2 
On 03/04/2024 02:45, Jakub Kicinski wrote:
> [Some people who received this message don't often get email from kuba@kernel.org. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
>
> This email is not from Hexagon’s Office 365 instance. Please be careful while clicking links, opening attachments, or replying to this email.
>
>
> On Thu, 28 Mar 2024 14:33:58 +0100 Catalin Popescu wrote:
>> -static int dp83822_set_wol(struct phy_device *phydev,
>> -                        struct ethtool_wolinfo *wol)
>> +static int _dp83822_set_wol(struct phy_device *phydev,
>> +                         struct ethtool_wolinfo *wol)
> Why the underscore, you can all this any number of things maybe
> dp83822_config_wol() or dp83822_apply_wol()?

Sure, I'll use dp83822_config_wol.
diff mbox series

Patch

diff --git a/drivers/net/phy/dp83822.c b/drivers/net/phy/dp83822.c
index c3426a17e6d0..683ebb13bd4f 100644
--- a/drivers/net/phy/dp83822.c
+++ b/drivers/net/phy/dp83822.c
@@ -140,10 +140,11 @@  struct dp83822_private {
 	u16 fx_sd_enable;
 	u8 cfg_dac_minus;
 	u8 cfg_dac_plus;
+	struct ethtool_wolinfo wol;
 };
 
-static int dp83822_set_wol(struct phy_device *phydev,
-			   struct ethtool_wolinfo *wol)
+static int _dp83822_set_wol(struct phy_device *phydev,
+			    struct ethtool_wolinfo *wol)
 {
 	struct net_device *ndev = phydev->attached_dev;
 	u16 value;
@@ -197,10 +198,25 @@  static int dp83822_set_wol(struct phy_device *phydev,
 				     MII_DP83822_WOL_CFG, value);
 	} else {
 		return phy_clear_bits_mmd(phydev, DP83822_DEVADDR,
-					  MII_DP83822_WOL_CFG, DP83822_WOL_EN);
+					  MII_DP83822_WOL_CFG,
+					  DP83822_WOL_EN |
+					  DP83822_WOL_MAGIC_EN |
+					  DP83822_WOL_SECURE_ON);
 	}
 }
 
+static int dp83822_set_wol(struct phy_device *phydev,
+			   struct ethtool_wolinfo *wol)
+{
+	struct dp83822_private *dp83822 = phydev->priv;
+	int ret;
+
+	ret = _dp83822_set_wol(phydev, wol);
+	if (!ret)
+		memcpy(&dp83822->wol, wol, sizeof(*wol));
+	return ret;
+}
+
 static void dp83822_get_wol(struct phy_device *phydev,
 			    struct ethtool_wolinfo *wol)
 {
@@ -346,13 +362,6 @@  static irqreturn_t dp83822_handle_interrupt(struct phy_device *phydev)
 	return IRQ_HANDLED;
 }
 
-static int dp8382x_disable_wol(struct phy_device *phydev)
-{
-	return phy_clear_bits_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG,
-				  DP83822_WOL_EN | DP83822_WOL_MAGIC_EN |
-				  DP83822_WOL_SECURE_ON);
-}
-
 static int dp83822_read_status(struct phy_device *phydev)
 {
 	struct dp83822_private *dp83822 = phydev->priv;
@@ -496,7 +505,7 @@  static int dp83822_config_init(struct phy_device *phydev)
 				return err;
 		}
 	}
-	return dp8382x_disable_wol(phydev);
+	return _dp83822_set_wol(phydev, &dp83822->wol);
 }
 
 static int dp83826_config_rmii_mode(struct phy_device *phydev)
@@ -575,12 +584,14 @@  static int dp83826_config_init(struct phy_device *phydev)
 			return ret;
 	}
 
-	return dp8382x_disable_wol(phydev);
+	return _dp83822_set_wol(phydev, &dp83822->wol);
 }
 
 static int dp8382x_config_init(struct phy_device *phydev)
 {
-	return dp8382x_disable_wol(phydev);
+	struct dp83822_private *dp83822 = phydev->priv;
+
+	return _dp83822_set_wol(phydev, &dp83822->wol);
 }
 
 static int dp83822_phy_reset(struct phy_device *phydev)