All of lore.kernel.org
 help / color / mirror / Atom feed
From: Michael Walle <michael@walle.cc>
To: u-boot@lists.denx.de
Subject: [PATCH v4 08/12] phy: atheros: introduce debug read and write functions
Date: Thu,  7 May 2020 00:11:55 +0200	[thread overview]
Message-ID: <20200506221159.1298-9-michael@walle.cc> (raw)
In-Reply-To: <20200506221159.1298-1-michael@walle.cc>

Provide functions to read and write the Atheros debug registers.

Signed-off-by: Michael Walle <michael@walle.cc>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
---
 drivers/net/phy/atheros.c | 57 ++++++++++++++++++++++++++++-----------
 1 file changed, 41 insertions(+), 16 deletions(-)

diff --git a/drivers/net/phy/atheros.c b/drivers/net/phy/atheros.c
index 5ff5875d3d..660dcd9491 100644
--- a/drivers/net/phy/atheros.c
+++ b/drivers/net/phy/atheros.c
@@ -30,32 +30,57 @@
 #define AR8031_PHY_ID 0x004dd074
 #define AR8035_PHY_ID 0x004dd072
 
-static void ar803x_enable_rx_delay(struct phy_device *phydev, bool on)
+static int ar803x_debug_reg_read(struct phy_device *phydev, u16 reg)
 {
-	int regval;
+	int ret;
+
+	ret = phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_ADDR_REG,
+			reg);
+	if (ret < 0)
+		return ret;
+
+	return phy_read(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_DATA_REG);
+}
+
+static int ar803x_debug_reg_mask(struct phy_device *phydev, u16 reg,
+				 u16 clear, u16 set)
+{
+	int val;
+
+	val = ar803x_debug_reg_read(phydev, reg);
+	if (val < 0)
+		return val;
+
+	val &= 0xffff;
+	val &= ~clear;
+	val |= set;
+
+	return phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_DATA_REG,
+			 val);
+}
+
+static int ar803x_enable_rx_delay(struct phy_device *phydev, bool on)
+{
+	u16 clear = 0, set = 0;
 
-	phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_ADDR_REG,
-		  AR803x_DEBUG_REG_0);
-	regval = phy_read(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_DATA_REG);
 	if (on)
-		regval |= AR803x_RGMII_RX_CLK_DLY;
+		set = AR803x_RGMII_RX_CLK_DLY;
 	else
-		regval &= ~AR803x_RGMII_RX_CLK_DLY;
-	phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_DATA_REG, regval);
+		clear = AR803x_RGMII_RX_CLK_DLY;
+
+	return ar803x_debug_reg_mask(phydev, AR803x_DEBUG_REG_0, clear, set);
 }
 
-static void ar803x_enable_tx_delay(struct phy_device *phydev, bool on)
+static int ar803x_enable_tx_delay(struct phy_device *phydev, bool on)
 {
-	int regval;
+	u16 clear = 0, set = 0;
 
-	phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_ADDR_REG,
-		  AR803x_DEBUG_REG_5);
-	regval = phy_read(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_DATA_REG);
 	if (on)
-		regval |= AR803x_RGMII_TX_CLK_DLY;
+		set = AR803x_RGMII_TX_CLK_DLY;
 	else
-		regval &= ~AR803x_RGMII_TX_CLK_DLY;
-	phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_DATA_REG, regval);
+		clear = AR803x_RGMII_TX_CLK_DLY;
+
+	return ar803x_debug_reg_mask(phydev, AR803x_DEBUG_REG_5, clear, set);
 }
 
 static int ar8021_config(struct phy_device *phydev)
-- 
2.20.1

  parent reply	other threads:[~2020-05-06 22:11 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-06 22:11 [PATCH v4 00/12] phy: atheros: dt bindings and cleanup Michael Walle
2020-05-06 22:11 ` [PATCH v4 01/12] phy: atheros: Make RGMII Tx delays actually configurable for AR8035 Michael Walle
2020-05-07 18:51   ` Tom Rini
2020-05-06 22:11 ` [PATCH v4 02/12] phy: atheros: Use common functions for RGMII internal delays Michael Walle
2020-05-07 18:52   ` Tom Rini
2020-05-06 22:11 ` [PATCH v4 03/12] phy: atheros: Clarify the configuration of the CLK_25M output pin Michael Walle
2020-05-07 18:52   ` Tom Rini
2020-05-06 22:11 ` [PATCH v4 04/12] phy: atheros: Explicitly disable RGMII delays Michael Walle
2020-05-07 18:52   ` Tom Rini
2020-05-06 22:11 ` [PATCH v4 05/12] phy: atheros: Clarify the intention of ar8021_config Michael Walle
2020-05-07 18:52   ` Tom Rini
2020-05-06 22:11 ` [PATCH v4 06/12] phy: atheros: fix AR8021 PHY ID mask Michael Walle
2020-05-07 18:53   ` Tom Rini
2020-05-06 22:11 ` [PATCH v4 07/12] phy: atheros: use defines for PHY IDs Michael Walle
2020-05-07 18:53   ` Tom Rini
2020-05-06 22:11 ` Michael Walle [this message]
2020-05-07 18:53   ` [PATCH v4 08/12] phy: atheros: introduce debug read and write functions Tom Rini
2020-05-06 22:11 ` [PATCH v4 09/12] phy: atheros: move delay config to common function Michael Walle
2020-05-07 18:53   ` Tom Rini
2020-05-06 22:11 ` [PATCH v4 10/12] phy: atheros: add device tree bindings and config Michael Walle
2020-05-07 18:53   ` Tom Rini
2020-05-06 22:11 ` [PATCH v4 11/12] phy: atheros: ar8035: remove static clock config Michael Walle
2020-05-07 18:53   ` Tom Rini
2020-05-06 22:11 ` [PATCH v4 12/12] phy: atheros: consolidate {ar8031|ar8035}_config() Michael Walle
2020-05-07 18:53   ` Tom Rini

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200506221159.1298-9-michael@walle.cc \
    --to=michael@walle.cc \
    --cc=u-boot@lists.denx.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.