[PATCH 1/3] davinci_emac: return 0 on successful transmit

[PATCH 1/3] davinci_emac: return 0 on successful transmit

[Jan Luebbe]

The _send function should not return the length of the transmitted packet.

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
---
 drivers/net/davinci_emac.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index 09fcb63..7f39972 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -410,7 +410,7 @@ static int davinci_emac_send(struct eth_device *edev, void *packet, int length)
 {
 	struct davinci_emac_priv *priv = (struct davinci_emac_priv *)edev->priv;
 	uint64_t start;
-	int ret_status = -1;
+	int ret_status;
 
 	dev_dbg(priv->dev, "+ emac_send (length %d)\n", length);
 
@@ -437,7 +437,7 @@ static int davinci_emac_send(struct eth_device *edev, void *packet, int length)
 		if (readl(priv->adap_emac + EMAC_TXINTSTATRAW) & 0x01) {
 			/* Acknowledge the TX descriptor */
 			writel(BD_TO_HW(priv->emac_tx_desc), priv->adap_emac + EMAC_TX0CP);
-			ret_status = length;
+			ret_status = 0;
 			break;
 		}
 		if (is_timeout(start, 100 * MSECOND)) {
-- 
1.7.10.4


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[PATCH 2/3] davinci_emac: adjust to new phylib framework

[Jan Luebbe]

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
---
 drivers/net/Kconfig        |    2 +-
 drivers/net/davinci_emac.c |   45 ++++++++++++++++++++++----------------------
 2 files changed, 24 insertions(+), 23 deletions(-)

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index b0da2c5..b3e5a83 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -48,7 +48,7 @@ config DRIVER_NET_SMC91111
 config DRIVER_NET_DAVINCI_EMAC
 	bool "TI Davinci/OMAP EMAC ethernet driver"
 	depends on ARCH_DAVINCI || ARCH_OMAP3
-	select MIIDEV
+	select PHYLIB
 
 config DRIVER_NET_DM9K
 	bool "Davicom dm9k[E|A|B] ethernet driver"
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index 7f39972..a8b4b36 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -43,18 +43,18 @@
 #include <io.h>
 #include <clock.h>
 #include <net.h>
-#include <miidev.h>
 #include <malloc.h>
 #include <init.h>
 #include <asm/mmu.h>
 #include <asm/system.h>
+#include <linux/phy.h>
 #include <mach/emac_defs.h>
 #include "davinci_emac.h"
 
 struct davinci_emac_priv {
 	struct device_d *dev;
 	struct eth_device edev;
-	struct mii_device miidev;
+	struct mii_bus miibus;
 
 	/* EMAC Addresses */
 	void __iomem *adap_emac; /* = EMAC_BASE_ADDR */
@@ -167,16 +167,16 @@ static int davinci_eth_phy_write(struct davinci_emac_priv *priv, uint8_t phy_add
 	return 1;
 }
 
-static int davinci_miidev_read(struct mii_device *dev, int addr, int reg)
+static int davinci_miibus_read(struct mii_bus *bus, int addr, int reg)
 {
-	struct davinci_emac_priv *priv = (struct davinci_emac_priv *)dev->edev->priv;
+	struct davinci_emac_priv *priv = (struct davinci_emac_priv *)bus->priv;
 	uint16_t value = 0;
 	return davinci_eth_phy_read(priv, addr, reg, &value) ? value : -1;
 }
 
-static int davinci_miidev_write(struct mii_device *dev, int addr, int reg, int value)
+static int davinci_miibus_write(struct mii_bus *bus, int addr, int reg, u16 value)
 {
-	struct davinci_emac_priv *priv = (struct davinci_emac_priv *)dev->edev->priv;
+	struct davinci_emac_priv *priv = (struct davinci_emac_priv *)bus->priv;
 	return davinci_eth_phy_write(priv, addr, reg, value) ? 0 : -1;
 }
 
@@ -318,16 +318,12 @@ static int davinci_emac_open(struct eth_device *edev)
 	/* Start receive process */
 	writel(BD_TO_HW(priv->emac_rx_desc), priv->adap_emac + EMAC_RX0HDP);
 
-	ret = miidev_wait_aneg(&priv->miidev);
+	ret = phy_device_connect(edev, &priv->miibus, priv->active_phy_addr, NULL,
+	                         PHYLIB_FORCE_LINK,
+	                         PHY_INTERFACE_MODE_NA);
 	if (ret)
 		return ret;
 
-	ret = miidev_get_status(&priv->miidev);
-	if (ret < 0)
-		return ret;
-
-	miidev_print_status(&priv->miidev);
-
 	dev_dbg(priv->dev, "- emac_open\n");
 
 	return 0;
@@ -533,6 +529,7 @@ static int davinci_emac_probe(struct device_d *dev)
 {
 	struct davinci_emac_priv *priv;
 	uint64_t start;
+	uint32_t phy_mask;
 
 	dev_dbg(dev, "+ emac_probe\n");
 
@@ -573,22 +570,26 @@ static int davinci_emac_probe(struct device_d *dev)
 
 	start = get_time_ns();
 	while (1) {
-		if (readl(priv->adap_mdio + EMAC_MDIO_ALIVE))
+		phy_mask = readl(priv->adap_mdio + EMAC_MDIO_ALIVE);
+		if (phy_mask) {
+			dev_info(dev, "detected phy mask 0x%x\n", phy_mask);
+			phy_mask = ~phy_mask;
 			break;
+		}
 		if (is_timeout(start, 256 * MSECOND)) {
-			dev_err(dev, "No ETH PHY detected!\n");
+			dev_err(dev, "no live phy, scanning all\n");
+			phy_mask = 0;
 			break;
 		}
 	}
 
-	priv->miidev.read = davinci_miidev_read;
-	priv->miidev.write = davinci_miidev_write;
-	priv->miidev.address = 0x01;
-	priv->miidev.flags = MIIDEV_FORCE_LINK;
-	priv->miidev.edev = &priv->edev;
-	priv->miidev.parent = dev;
+	priv->miibus.read = davinci_miibus_read;
+	priv->miibus.write = davinci_miibus_write;
+	priv->miibus.priv = priv;
+	priv->miibus.parent = dev;
+	priv->miibus.phy_mask = phy_mask;
 
-	mii_register(&priv->miidev);
+	mdiobus_register(&priv->miibus);
 
 	eth_register(&priv->edev);
 
-- 
1.7.10.4


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[PATCH 3/3] davinci_emac: get rid of mdio wrapper functions

[Jan Luebbe]

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
---
 drivers/net/davinci_emac.c |   52 ++++++++++++++++----------------------------
 1 file changed, 19 insertions(+), 33 deletions(-)

diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index a8b4b36..ef20611 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -119,65 +119,51 @@ static void davinci_eth_mdio_enable(struct davinci_emac_priv *priv)
 	while (readl(priv->adap_mdio + EMAC_MDIO_CONTROL) & MDIO_CONTROL_IDLE);
 }
 
-/* Read a PHY register via MDIO inteface. Returns 1 on success, 0 otherwise */
-static int davinci_eth_phy_read(struct davinci_emac_priv *priv, uint8_t phy_addr, uint8_t reg_num, uint16_t *data)
+static int davinci_miibus_read(struct mii_bus *bus, int addr, int reg)
 {
-	int	tmp;
+	struct davinci_emac_priv *priv = (struct davinci_emac_priv *)bus->priv;
+	uint16_t value;
+	int tmp;
 
 	while (readl(priv->adap_mdio + EMAC_MDIO_USERACCESS0) & MDIO_USERACCESS0_GO);
 
 	writel(MDIO_USERACCESS0_GO |
 		MDIO_USERACCESS0_WRITE_READ |
-		((reg_num & 0x1f) << 21) |
-		((phy_addr & 0x1f) << 16),
+		((reg & 0x1f) << 21) |
+		((addr & 0x1f) << 16),
 		priv->adap_mdio + EMAC_MDIO_USERACCESS0);
 
 	/* Wait for command to complete */
 	while ((tmp = readl(priv->adap_mdio + EMAC_MDIO_USERACCESS0)) & MDIO_USERACCESS0_GO);
 
 	if (tmp & MDIO_USERACCESS0_ACK) {
-		*data = tmp & 0xffff;
-		dev_dbg(priv->dev, "emac_phy_read: addr=0x%02x reg=0x%02x data=0x%04x\n",
-			   phy_addr, reg_num, *data);
-		return 1;
+		value = tmp & 0xffff;
+		dev_dbg(priv->dev, "davinci_miibus_read: addr=0x%02x reg=0x%02x value=0x%04x\n",
+			   addr, reg, value);
+		return value;
 	}
 
-	*data = -1;
-	return 0;
+	return -1;
 }
 
-/* Write to a PHY register via MDIO inteface. Blocks until operation is complete. */
-static int davinci_eth_phy_write(struct davinci_emac_priv *priv, uint8_t phy_addr, uint8_t reg_num, uint16_t data)
+static int davinci_miibus_write(struct mii_bus *bus, int addr, int reg, u16 value)
 {
-
+	struct davinci_emac_priv *priv = (struct davinci_emac_priv *)bus->priv;
 	while (readl(priv->adap_mdio + EMAC_MDIO_USERACCESS0) & MDIO_USERACCESS0_GO);
 
-	dev_dbg(priv->dev, "emac_phy_write: addr=0x%02x reg=0x%02x data=0x%04x\n",
-		   phy_addr, reg_num, data);
+	dev_dbg(priv->dev, "davinci_miibus_write: addr=0x%02x reg=0x%02x value=0x%04x\n",
+		   addr, reg, value);
 	writel(MDIO_USERACCESS0_GO |
 				MDIO_USERACCESS0_WRITE_WRITE |
-				((reg_num & 0x1f) << 21) |
-				((phy_addr & 0x1f) << 16) |
-				(data & 0xffff),
+				((reg & 0x1f) << 21) |
+				((addr & 0x1f) << 16) |
+				(value & 0xffff),
 		priv->adap_mdio + EMAC_MDIO_USERACCESS0);
 
 	/* Wait for command to complete */
 	while (readl(priv->adap_mdio + EMAC_MDIO_USERACCESS0) & MDIO_USERACCESS0_GO);
 
-	return 1;
-}
-
-static int davinci_miibus_read(struct mii_bus *bus, int addr, int reg)
-{
-	struct davinci_emac_priv *priv = (struct davinci_emac_priv *)bus->priv;
-	uint16_t value = 0;
-	return davinci_eth_phy_read(priv, addr, reg, &value) ? value : -1;
-}
-
-static int davinci_miibus_write(struct mii_bus *bus, int addr, int reg, u16 value)
-{
-	struct davinci_emac_priv *priv = (struct davinci_emac_priv *)bus->priv;
-	return davinci_eth_phy_write(priv, addr, reg, value) ? 0 : -1;
+	return 0;
 }
 
 static int davinci_emac_get_ethaddr(struct eth_device *edev, unsigned char *adr)
-- 
1.7.10.4


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Re: [PATCH 2/3] davinci_emac: adjust to new phylib framework

[Jean-Christophe PLAGNIOL-VILLARD]

On 15:17 Wed 26 Sep     , Jan Luebbe wrote:
> Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
> ---
>  drivers/net/Kconfig        |    2 +-
>  drivers/net/davinci_emac.c |   45 ++++++++++++++++++++++----------------------
>  2 files changed, 24 insertions(+), 23 deletions(-)
> 
> diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
> index b0da2c5..b3e5a83 100644
> --- a/drivers/net/Kconfig
> +++ b/drivers/net/Kconfig
> @@ -48,7 +48,7 @@ config DRIVER_NET_SMC91111
>  config DRIVER_NET_DAVINCI_EMAC
>  	bool "TI Davinci/OMAP EMAC ethernet driver"
>  	depends on ARCH_DAVINCI || ARCH_OMAP3
> -	select MIIDEV
> +	select PHYLIB
>  
>  config DRIVER_NET_DM9K
>  	bool "Davicom dm9k[E|A|B] ethernet driver"
> diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
> index 7f39972..a8b4b36 100644
> --- a/drivers/net/davinci_emac.c
> +++ b/drivers/net/davinci_emac.c
> @@ -43,18 +43,18 @@
>  #include <io.h>
>  #include <clock.h>
>  #include <net.h>
> -#include <miidev.h>
>  #include <malloc.h>
>  #include <init.h>
>  #include <asm/mmu.h>
>  #include <asm/system.h>
> +#include <linux/phy.h>
>  #include <mach/emac_defs.h>
>  #include "davinci_emac.h"
>  
>  struct davinci_emac_priv {
>  	struct device_d *dev;
>  	struct eth_device edev;
> -	struct mii_device miidev;
> +	struct mii_bus miibus;
>  
>  	/* EMAC Addresses */
>  	void __iomem *adap_emac; /* = EMAC_BASE_ADDR */
> @@ -167,16 +167,16 @@ static int davinci_eth_phy_write(struct davinci_emac_priv *priv, uint8_t phy_add
>  	return 1;
>  }
>  
> -static int davinci_miidev_read(struct mii_device *dev, int addr, int reg)
> +static int davinci_miibus_read(struct mii_bus *bus, int addr, int reg)
>  {
> -	struct davinci_emac_priv *priv = (struct davinci_emac_priv *)dev->edev->priv;
> +	struct davinci_emac_priv *priv = (struct davinci_emac_priv *)bus->priv;
you can drop the cast priv is a void*
>  	uint16_t value = 0;
>  	return davinci_eth_phy_read(priv, addr, reg, &value) ? value : -1;
>  }
>  
> -static int davinci_miidev_write(struct mii_device *dev, int addr, int reg, int value)
> +static int davinci_miibus_write(struct mii_bus *bus, int addr, int reg, u16 value)
>  {
> -	struct davinci_emac_priv *priv = (struct davinci_emac_priv *)dev->edev->priv;
> +	struct davinci_emac_priv *priv = (struct davinci_emac_priv *)bus->priv;
>  	return davinci_eth_phy_write(priv, addr, reg, value) ? 0 : -1;
>  }
>  
> @@ -318,16 +318,12 @@ static int davinci_emac_open(struct eth_device *edev)
>  	/* Start receive process */
>  	writel(BD_TO_HW(priv->emac_rx_desc), priv->adap_emac + EMAC_RX0HDP);
>  
> -	ret = miidev_wait_aneg(&priv->miidev);
> +	ret = phy_device_connect(edev, &priv->miibus, priv->active_phy_addr, NULL,
> +	                         PHYLIB_FORCE_LINK,
> +	                         PHY_INTERFACE_MODE_NA);
why FORCE_LINK in the driver make no sense this board config

Best Regards,
J.
>  	if (ret)
>  		return ret;
>  
> -	ret = miidev_get_status(&priv->miidev);
> -	if (ret < 0)
> -		return ret;
> -
> -	miidev_print_status(&priv->miidev);
> -
>  	dev_dbg(priv->dev, "- emac_open\n");
>  
>  	return 0;
> @@ -533,6 +529,7 @@ static int davinci_emac_probe(struct device_d *dev)
>  {
>  	struct davinci_emac_priv *priv;
>  	uint64_t start;
> +	uint32_t phy_mask;
>  
>  	dev_dbg(dev, "+ emac_probe\n");
>  
> @@ -573,22 +570,26 @@ static int davinci_emac_probe(struct device_d *dev)
>  
>  	start = get_time_ns();
>  	while (1) {
> -		if (readl(priv->adap_mdio + EMAC_MDIO_ALIVE))
> +		phy_mask = readl(priv->adap_mdio + EMAC_MDIO_ALIVE);
> +		if (phy_mask) {
> +			dev_info(dev, "detected phy mask 0x%x\n", phy_mask);
> +			phy_mask = ~phy_mask;
>  			break;
> +		}
>  		if (is_timeout(start, 256 * MSECOND)) {
> -			dev_err(dev, "No ETH PHY detected!\n");
> +			dev_err(dev, "no live phy, scanning all\n");
> +			phy_mask = 0;
>  			break;
>  		}
>  	}
>  
> -	priv->miidev.read = davinci_miidev_read;
> -	priv->miidev.write = davinci_miidev_write;
> -	priv->miidev.address = 0x01;
> -	priv->miidev.flags = MIIDEV_FORCE_LINK;
> -	priv->miidev.edev = &priv->edev;
> -	priv->miidev.parent = dev;
> +	priv->miibus.read = davinci_miibus_read;
> +	priv->miibus.write = davinci_miibus_write;
> +	priv->miibus.priv = priv;
> +	priv->miibus.parent = dev;
> +	priv->miibus.phy_mask = phy_mask;
>  
> -	mii_register(&priv->miidev);
> +	mdiobus_register(&priv->miibus);
>  
>  	eth_register(&priv->edev);
>  
> -- 
> 1.7.10.4
> 
> 
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