diff mbox series

[v3,net-next,4/6] net: phy: realtek: Change rtlgen_get_speed() to rtlgen_decode_speed()

Message ID 20240402055848.177580-5-ericwouds@gmail.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series rtl8226b/8221b add C45 instances and SerDes switching | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
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: 943 this patch: 943
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: 954 this patch: 954
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: 954 this patch: 954
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 92 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-2024-04-02--18-00 (tests: 947)

Commit Message

Eric Woudstra April 2, 2024, 5:58 a.m. UTC 
The value of the register to determine the speed, is retrieved
differently when using Clause 45 only. To use the rtlgen_get_speed()
function in this case, pass the value of the register as argument to
rtlgen_get_speed(). The function would then always return 0, so change it
to void. A better name for this function now is rtlgen_decode_speed().

Replace a call to genphy_read_status() followed by rtlgen_get_speed()
with a call to rtlgen_read_status() in rtl822x_read_status().

Add reading speed to rtl822x_c45_read_status().

Signed-off-by: Eric Woudstra <ericwouds@gmail.com>
---
 drivers/net/phy/realtek.c | 46 +++++++++++++++++++++------------------
 1 file changed, 25 insertions(+), 21 deletions(-)

Comments

Russell King (Oracle) April 2, 2024, 7:27 p.m. UTC | #1 
On Tue, Apr 02, 2024 at 07:58:46AM +0200, Eric Woudstra wrote:
> The value of the register to determine the speed, is retrieved
> differently when using Clause 45 only. To use the rtlgen_get_speed()
> function in this case, pass the value of the register as argument to
> rtlgen_get_speed(). The function would then always return 0, so change it
> to void. A better name for this function now is rtlgen_decode_speed().
> 
> Replace a call to genphy_read_status() followed by rtlgen_get_speed()
> with a call to rtlgen_read_status() in rtl822x_read_status().
> 
> Add reading speed to rtl822x_c45_read_status().
> 
> Signed-off-by: Eric Woudstra <ericwouds@gmail.com>

Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>

Thanks!
diff mbox series

Patch

diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
index 2215a31d5aab..af5e77fd6576 100644
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -71,6 +71,8 @@ 
 
 #define RTL822X_VND2_GANLPAR				0xa414
 
+#define RTL822X_VND2_PHYSR				0xa434
+
 #define RTL8366RB_POWER_SAVE			0x15
 #define RTL8366RB_POWER_SAVE_ON			BIT(12)
 
@@ -551,17 +553,8 @@  static int rtl8366rb_config_init(struct phy_device *phydev)
 }
 
 /* get actual speed to cover the downshift case */
-static int rtlgen_get_speed(struct phy_device *phydev)
+static void rtlgen_decode_speed(struct phy_device *phydev, int val)
 {
-	int val;
-
-	if (!phydev->link)
-		return 0;
-
-	val = phy_read_paged(phydev, 0xa43, 0x12);
-	if (val < 0)
-		return val;
-
 	switch (val & RTLGEN_SPEED_MASK) {
 	case 0x0000:
 		phydev->speed = SPEED_10;
@@ -584,19 +577,26 @@  static int rtlgen_get_speed(struct phy_device *phydev)
 	default:
 		break;
 	}
-
-	return 0;
 }
 
 static int rtlgen_read_status(struct phy_device *phydev)
 {
-	int ret;
+	int ret, val;
 
 	ret = genphy_read_status(phydev);
 	if (ret < 0)
 		return ret;
 
-	return rtlgen_get_speed(phydev);
+	if (!phydev->link)
+		return 0;
+
+	val = phy_read_paged(phydev, 0xa43, 0x12);
+	if (val < 0)
+		return val;
+
+	rtlgen_decode_speed(phydev, val);
+
+	return 0;
 }
 
 static int rtlgen_read_mmd(struct phy_device *phydev, int devnum, u16 regnum)
@@ -818,8 +818,6 @@  static void rtl822xb_update_interface(struct phy_device *phydev)
 
 static int rtl822x_read_status(struct phy_device *phydev)
 {
-	int ret;
-
 	if (phydev->autoneg == AUTONEG_ENABLE) {
 		int lpadv = phy_read_paged(phydev, 0xa5d, 0x13);
 
@@ -830,11 +828,7 @@  static int rtl822x_read_status(struct phy_device *phydev)
 						  lpadv);
 	}
 
-	ret = genphy_read_status(phydev);
-	if (ret < 0)
-		return ret;
-
-	return rtlgen_get_speed(phydev);
+	return rtlgen_read_status(phydev);
 }
 
 static int rtl822xb_read_status(struct phy_device *phydev)
@@ -895,6 +889,16 @@  static int rtl822x_c45_read_status(struct phy_device *phydev)
 		mii_stat1000_mod_linkmode_lpa_t(phydev->lp_advertising, val);
 	}
 
+	if (!phydev->link)
+		return 0;
+
+	/* Read actual speed from vendor register. */
+	val = phy_read_mmd(phydev, MDIO_MMD_VEND2, RTL822X_VND2_PHYSR);
+	if (val < 0)
+		return val;
+
+	rtlgen_decode_speed(phydev, val);
+
 	return 0;
 }