[PATCH 0/2] Add PHY IRQ support to the 'sh_eth' driver

[PATCH 0/2] Add PHY IRQ support to the 'sh_eth' driver

[Sergei Shtylyov]

Hello.

   This patchset adds support for passing PHY's IRQ to the 'sh_eth' driver from
the platform code and removes now useless code that hinders the PHY IRQ handing
by philib.

[1/2] sh_eth: add PHY IRQ to platform data
[2/2] sh_eth: do not reset PHY needlessly

WBR, Sergei

[PATCH 1/2] sh_eth: add PHY IRQ to platform data

[Sergei Shtylyov]

Allow the platform code to pass PHY's IRQ to the driver.  Print this IRQ along
with the other PHY datails in sh_eth_phy_init().

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

---
 drivers/net/ethernet/renesas/sh_eth.c |    6 ++++--
 include/linux/sh_eth.h                |    1 +
 2 files changed, 5 insertions(+), 2 deletions(-)

Index: net-next/drivers/net/ethernet/renesas/sh_eth.c
=================================--- net-next.orig/drivers/net/ethernet/renesas/sh_eth.c
+++ net-next/drivers/net/ethernet/renesas/sh_eth.c
@@ -1685,8 +1685,8 @@ static int sh_eth_phy_init(struct net_de
 		return PTR_ERR(phydev);
 	}
 
-	dev_info(&ndev->dev, "attached phy %i to driver %s\n",
-		phydev->addr, phydev->drv->name);
+	dev_info(&ndev->dev, "attached PHY %d (IRQ %d) to driver %s\n",
+		 phydev->addr, phydev->irq, phydev->drv->name);
 
 	mdp->phydev = phydev;
 
@@ -2544,6 +2544,8 @@ static int sh_mdio_init(struct net_devic
 
 	for (i = 0; i < PHY_MAX_ADDR; i++)
 		mdp->mii_bus->irq[i] = PHY_POLL;
+	if (pd->phy_irq > 0)
+		mdp->mii_bus->irq[pd->phy] = pd->phy_irq;
 
 	/* register mdio bus */
 	ret = mdiobus_register(mdp->mii_bus);
Index: net-next/include/linux/sh_eth.h
=================================--- net-next.orig/include/linux/sh_eth.h
+++ net-next/include/linux/sh_eth.h
@@ -8,6 +8,7 @@ enum {EDMAC_LITTLE_ENDIAN, EDMAC_BIG_END
 
 struct sh_eth_plat_data {
 	int phy;
+	int phy_irq;
 	int edmac_endian;
 	phy_interface_t phy_interface;
 	void (*set_mdio_gate)(void *addr);

[PATCH 2/2] sh_eth: do not reset PHY needlessly

[Sergei Shtylyov]

There's no need anymore to call phy_init_hw() to reset/resume the PHY from the
driver, as the call chain in phylib already has reached it, and so reset/resumed
the PHY (even resuming it twice). This duplicate reset is not only  needless, it
e.g. clears the PHY's interrupt enables just setup by phylib and so prevents the
expected IRQs from the PHY.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

---
 drivers/net/ethernet/renesas/sh_eth.c |    5 -----
 1 file changed, 5 deletions(-)

Index: net-next/drivers/net/ethernet/renesas/sh_eth.c
=================================--- net-next.orig/drivers/net/ethernet/renesas/sh_eth.c
+++ net-next/drivers/net/ethernet/renesas/sh_eth.c
@@ -1703,11 +1703,6 @@ static int sh_eth_phy_start(struct net_d
 	if (ret)
 		return ret;
 
-	/* reset phy - this also wakes it from PDOWN */
-	ret = phy_init_hw(mdp->phydev);
-	if (ret)
-		return ret;
-
 	phy_start(mdp->phydev);
 
 	return 0;

Re: [PATCH 0/2] Add PHY IRQ support to the 'sh_eth' driver

[Sergei Shtylyov]

On 12/20/2013 01:38 AM, Sergei Shtylyov wrote:

>     This patchset adds support for passing PHY's IRQ to the 'sh_eth' driver from
> the platform code and removes now useless code that hinders the PHY IRQ handing
> by philib.

    Ugh, forgot to mention it's against DaveM's 'net-next.git' repo.

> [1/2] sh_eth: add PHY IRQ to platform data
> [2/2] sh_eth: do not reset PHY needlessly

WBR, Sergei

[PATCH 0/2] Add PHY IRQ support to the 'sh_eth' driver

[Sergei Shtylyov]

Hello.

   This patchset adds support for passing PHY's IRQ to the 'sh_eth' driver from
the platform code and removes now useless code that hinders the PHY IRQ handing
by philib.

[1/2] sh_eth: add PHY IRQ to platform data
[2/2] sh_eth: do not reset PHY needlessly

WBR, Sergei

[PATCH 1/2] sh_eth: add PHY IRQ to platform data

[Sergei Shtylyov]

Allow the platform code to pass PHY's IRQ to the driver.  Print this IRQ along
with the other PHY datails in sh_eth_phy_init().

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

---
 drivers/net/ethernet/renesas/sh_eth.c |    6 ++++--
 include/linux/sh_eth.h                |    1 +
 2 files changed, 5 insertions(+), 2 deletions(-)

Index: net-next/drivers/net/ethernet/renesas/sh_eth.c
===================================================================
--- net-next.orig/drivers/net/ethernet/renesas/sh_eth.c
+++ net-next/drivers/net/ethernet/renesas/sh_eth.c
@@ -1685,8 +1685,8 @@ static int sh_eth_phy_init(struct net_de
 		return PTR_ERR(phydev);
 	}
 
-	dev_info(&ndev->dev, "attached phy %i to driver %s\n",
-		phydev->addr, phydev->drv->name);
+	dev_info(&ndev->dev, "attached PHY %d (IRQ %d) to driver %s\n",
+		 phydev->addr, phydev->irq, phydev->drv->name);
 
 	mdp->phydev = phydev;
 
@@ -2544,6 +2544,8 @@ static int sh_mdio_init(struct net_devic
 
 	for (i = 0; i < PHY_MAX_ADDR; i++)
 		mdp->mii_bus->irq[i] = PHY_POLL;
+	if (pd->phy_irq > 0)
+		mdp->mii_bus->irq[pd->phy] = pd->phy_irq;
 
 	/* register mdio bus */
 	ret = mdiobus_register(mdp->mii_bus);
Index: net-next/include/linux/sh_eth.h
===================================================================
--- net-next.orig/include/linux/sh_eth.h
+++ net-next/include/linux/sh_eth.h
@@ -8,6 +8,7 @@ enum {EDMAC_LITTLE_ENDIAN, EDMAC_BIG_END
 
 struct sh_eth_plat_data {
 	int phy;
+	int phy_irq;
 	int edmac_endian;
 	phy_interface_t phy_interface;
 	void (*set_mdio_gate)(void *addr);

[PATCH 2/2] sh_eth: do not reset PHY needlessly

[Sergei Shtylyov]

There's no need anymore to call phy_init_hw() to reset/resume the PHY from the
driver, as the call chain in phylib already has reached it, and so reset/resumed
the PHY (even resuming it twice). This duplicate reset is not only  needless, it
e.g. clears the PHY's interrupt enables just setup by phylib and so prevents the
expected IRQs from the PHY.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

---
 drivers/net/ethernet/renesas/sh_eth.c |    5 -----
 1 file changed, 5 deletions(-)

Index: net-next/drivers/net/ethernet/renesas/sh_eth.c
===================================================================
--- net-next.orig/drivers/net/ethernet/renesas/sh_eth.c
+++ net-next/drivers/net/ethernet/renesas/sh_eth.c
@@ -1703,11 +1703,6 @@ static int sh_eth_phy_start(struct net_d
 	if (ret)
 		return ret;
 
-	/* reset phy - this also wakes it from PDOWN */
-	ret = phy_init_hw(mdp->phydev);
-	if (ret)
-		return ret;
-
 	phy_start(mdp->phydev);
 
 	return 0;

Re: [PATCH 0/2] Add PHY IRQ support to the 'sh_eth' driver

[Sergei Shtylyov]

On 12/20/2013 01:38 AM, Sergei Shtylyov wrote:

>     This patchset adds support for passing PHY's IRQ to the 'sh_eth' driver from
> the platform code and removes now useless code that hinders the PHY IRQ handing
> by philib.

    Ugh, forgot to mention it's against DaveM's 'net-next.git' repo.

> [1/2] sh_eth: add PHY IRQ to platform data
> [2/2] sh_eth: do not reset PHY needlessly

WBR, Sergei

Re: [PATCH 0/2] Add PHY IRQ support to the 'sh_eth' driver

[David Miller]

From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Date: Fri, 20 Dec 2013 01:43:16 +0300

> On 12/20/2013 01:38 AM, Sergei Shtylyov wrote:
> 
>>     This patchset adds support for passing PHY's IRQ to the 'sh_eth'
>>     driver from
>> the platform code and removes now useless code that hinders the PHY
>> IRQ handing
>> by philib.
> 
>    Ugh, forgot to mention it's against DaveM's 'net-next.git' repo.

No need, series applied, thanks.

Re: [PATCH 0/2] Add PHY IRQ support to the 'sh_eth' driver

[David Miller]

From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Date: Fri, 20 Dec 2013 01:43:16 +0300

> On 12/20/2013 01:38 AM, Sergei Shtylyov wrote:
> 
>>     This patchset adds support for passing PHY's IRQ to the 'sh_eth'
>>     driver from
>> the platform code and removes now useless code that hinders the PHY
>> IRQ handing
>> by philib.
> 
>    Ugh, forgot to mention it's against DaveM's 'net-next.git' repo.

No need, series applied, thanks.