From: Alexandru Ardelean <alexandru.ardelean@analog.com>
To: netdev@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: davem@davemloft.net, robh+dt@kernel.org, mark.rutland@arm.com,
f.fainelli@gmail.com, hkallweit1@gmail.com, andrew@lunn.ch,
Alexandru Ardelean <alexandru.ardelean@analog.com>
Subject: [PATCH v2 05/15] net: phy: adin: add {write,read}_mmd hooks
Date: Thu, 8 Aug 2019 15:30:16 +0300 [thread overview]
Message-ID: <20190808123026.17382-6-alexandru.ardelean@analog.com> (raw)
In-Reply-To: <20190808123026.17382-1-alexandru.ardelean@analog.com>
Both ADIN1200 & ADIN1300 support Clause 45 access.
The Extended Management Interface (EMI) registers are accessible via both
Clause 45 (at register MDIO_MMD_VEND1) and using Clause 22.
However, the Clause 22 MMD access operations differ from the implementation
in the kernel, in the sense that it uses registers ExtRegPtr (0x10) &
ExtRegData (0x11) to access Clause 45 & EMI registers.
The indirect access is done via the following mechanism (for both R/W):
1. Write the address of the register in the ExtRegPtr
2. Read/write the value of the register (written at ExtRegPtr)
This mechanism is needed to manage configuration of chip settings and to
access EEE registers (via Clause 22).
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
---
drivers/net/phy/adin.c | 46 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)
diff --git a/drivers/net/phy/adin.c b/drivers/net/phy/adin.c
index 69000fb16704..a833e329be6f 100644
--- a/drivers/net/phy/adin.c
+++ b/drivers/net/phy/adin.c
@@ -14,6 +14,9 @@
#define PHY_ID_ADIN1200 0x0283bc20
#define PHY_ID_ADIN1300 0x0283bc30
+#define ADIN1300_MII_EXT_REG_PTR 0x0010
+#define ADIN1300_MII_EXT_REG_DATA 0x0011
+
#define ADIN1300_INT_MASK_REG 0x0018
#define ADIN1300_INT_MDIO_SYNC_EN BIT(9)
#define ADIN1300_INT_ANEG_STAT_CHNG_EN BIT(8)
@@ -53,6 +56,45 @@ static int adin_phy_config_intr(struct phy_device *phydev)
ADIN1300_INT_MASK_EN);
}
+static int adin_read_mmd(struct phy_device *phydev, int devad, u16 regnum)
+{
+ struct mii_bus *bus = phydev->mdio.bus;
+ int phy_addr = phydev->mdio.addr;
+ int err;
+
+ if (phydev->is_c45) {
+ u32 addr = MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff);
+
+ return __mdiobus_read(bus, phy_addr, addr);
+ }
+
+ err = __mdiobus_write(bus, phy_addr, ADIN1300_MII_EXT_REG_PTR, regnum);
+ if (err)
+ return err;
+
+ return __mdiobus_read(bus, phy_addr, ADIN1300_MII_EXT_REG_DATA);
+}
+
+static int adin_write_mmd(struct phy_device *phydev, int devad, u16 regnum,
+ u16 val)
+{
+ struct mii_bus *bus = phydev->mdio.bus;
+ int phy_addr = phydev->mdio.addr;
+ int err;
+
+ if (phydev->is_c45) {
+ u32 addr = MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff);
+
+ return __mdiobus_write(bus, phy_addr, addr, val);
+ }
+
+ err = __mdiobus_write(bus, phy_addr, ADIN1300_MII_EXT_REG_PTR, regnum);
+ if (err)
+ return err;
+
+ return __mdiobus_write(bus, phy_addr, ADIN1300_MII_EXT_REG_DATA, val);
+}
+
static struct phy_driver adin_driver[] = {
{
PHY_ID_MATCH_MODEL(PHY_ID_ADIN1200),
@@ -65,6 +107,8 @@ static struct phy_driver adin_driver[] = {
.config_intr = adin_phy_config_intr,
.resume = genphy_resume,
.suspend = genphy_suspend,
+ .read_mmd = adin_read_mmd,
+ .write_mmd = adin_write_mmd,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_ADIN1300),
@@ -77,6 +121,8 @@ static struct phy_driver adin_driver[] = {
.config_intr = adin_phy_config_intr,
.resume = genphy_resume,
.suspend = genphy_suspend,
+ .read_mmd = adin_read_mmd,
+ .write_mmd = adin_write_mmd,
},
};
--
2.20.1
next prev parent reply other threads:[~2019-08-08 12:30 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-08 12:30 [PATCH v2 00/15] net: phy: adin: add support for Analog Devices PHYs Alexandru Ardelean
2019-08-08 12:30 ` [PATCH v2 01/15] " Alexandru Ardelean
2019-08-08 15:13 ` Andrew Lunn
2019-08-08 12:30 ` [PATCH v2 02/15] net: phy: adin: hook genphy_read_abilities() to get_features Alexandru Ardelean
2019-08-08 15:24 ` Andrew Lunn
2019-08-08 19:32 ` Heiner Kallweit
2019-08-09 12:00 ` Ardelean, Alexandru
2019-08-08 12:30 ` [PATCH v2 03/15] net: phy: adin: hook genphy_{suspend,resume} into the driver Alexandru Ardelean
2019-08-08 15:24 ` Andrew Lunn
2019-08-08 12:30 ` [PATCH v2 04/15] net: phy: adin: add support for interrupts Alexandru Ardelean
2019-08-08 15:25 ` Andrew Lunn
2019-08-08 12:30 ` Alexandru Ardelean [this message]
2019-08-08 15:35 ` [PATCH v2 05/15] net: phy: adin: add {write,read}_mmd hooks Andrew Lunn
2019-08-09 12:05 ` Ardelean, Alexandru
2019-08-08 12:30 ` [PATCH v2 06/15] net: phy: adin: configure RGMII/RMII/MII modes on config Alexandru Ardelean
2019-08-08 15:38 ` Andrew Lunn
2019-08-08 12:30 ` [PATCH v2 07/15] net: phy: adin: make RGMII internal delays configurable Alexandru Ardelean
2019-08-08 15:40 ` Andrew Lunn
2019-08-08 12:30 ` [PATCH v2 08/15] net: phy: adin: make RMII fifo depth configurable Alexandru Ardelean
2019-08-08 15:42 ` Andrew Lunn
2019-08-08 12:30 ` [PATCH v2 09/15] net: phy: adin: add support MDI/MDIX/Auto-MDI selection Alexandru Ardelean
2019-08-08 12:30 ` [PATCH v2 10/15] net: phy: adin: add EEE translation layer from Clause 45 to Clause 22 Alexandru Ardelean
2019-08-08 12:30 ` [PATCH v2 11/15] net: phy: adin: implement PHY subsystem software reset Alexandru Ardelean
2019-08-08 12:30 ` [PATCH v2 12/15] net: phy: adin: implement Energy Detect Powerdown mode Alexandru Ardelean
2019-08-08 12:30 ` [PATCH v2 13/15] net: phy: adin: configure downshift on config_init Alexandru Ardelean
2019-08-08 19:38 ` Heiner Kallweit
2019-08-08 20:39 ` Andrew Lunn
2019-08-09 12:06 ` Ardelean, Alexandru
2019-08-08 12:30 ` [PATCH v2 14/15] net: phy: adin: add ethtool get_stats support Alexandru Ardelean
2019-08-08 12:30 ` [PATCH v2 15/15] dt-bindings: net: add bindings for ADIN PHY driver Alexandru Ardelean
2019-08-08 23:03 ` Rob Herring
2019-08-09 12:06 ` Ardelean, Alexandru
2019-08-08 18:24 ` [PATCH v2 00/15] net: phy: adin: add support for Analog Devices PHYs David Miller
2019-08-09 12:32 ` Ardelean, Alexandru
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