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From: Marek Vasut <marex@denx.de>
To: Heiner Kallweit <hkallweit1@gmail.com>, netdev@vger.kernel.org
Cc: Andrew Lunn <andrew@lunn.ch>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Guenter Roeck <linux@roeck-us.net>,
	Jean Delvare <jdelvare@suse.com>,
	linux-hwmon@vger.kernel.org
Subject: Re: [PATCH V2] net: phy: tja11xx: Add IRQ support to the driver
Date: Tue, 28 May 2019 21:31:32 +0200
Message-ID: <4f33b529-6c3c-07ee-6177-2d332de514c6@denx.de> (raw)
In-Reply-To: <96793717-a55c-7844-f7c0-cc357c774a19@gmail.com>

On 5/28/19 9:28 PM, Heiner Kallweit wrote:
> On 28.05.2019 21:23, Marek Vasut wrote:
>> Add support for handling the TJA11xx PHY IRQ signal.
>>
>> Signed-off-by: Marek Vasut <marex@denx.de>
>> Cc: Andrew Lunn <andrew@lunn.ch>
>> Cc: Florian Fainelli <f.fainelli@gmail.com>
>> Cc: Guenter Roeck <linux@roeck-us.net>
>> Cc: Heiner Kallweit <hkallweit1@gmail.com>
>> Cc: Jean Delvare <jdelvare@suse.com>
>> Cc: linux-hwmon@vger.kernel.org
>> ---
>> V2: - Define each bit of the MII_INTEN register and a mask
>>     - Drop IRQ acking from tja11xx_config_intr()
>> ---
>>  drivers/net/phy/nxp-tja11xx.c | 48 +++++++++++++++++++++++++++++++++++
>>  1 file changed, 48 insertions(+)
>>
>> diff --git a/drivers/net/phy/nxp-tja11xx.c b/drivers/net/phy/nxp-tja11xx.c
>> index b705d0bd798b..b41af609607d 100644
>> --- a/drivers/net/phy/nxp-tja11xx.c
>> +++ b/drivers/net/phy/nxp-tja11xx.c
>> @@ -40,6 +40,29 @@
>>  #define MII_INTSRC_TEMP_ERR		BIT(1)
>>  #define MII_INTSRC_UV_ERR		BIT(3)
>>  
>> +#define MII_INTEN			22
>> +#define MII_INTEN_PWON_EN		BIT(15)
>> +#define MII_INTEN_WAKEUP_EN		BIT(14)
>> +#define MII_INTEN_PHY_INIT_FAIL_EN	BIT(11)
>> +#define MII_INTEN_LINK_STATUS_FAIL_EN	BIT(10)
>> +#define MII_INTEN_LINK_STATUS_UP_EN	BIT(9)
>> +#define MII_INTEN_SYM_ERR_EN		BIT(8)
>> +#define MII_INTEN_TRAINING_FAILED_EN	BIT(7)
>> +#define MII_INTEN_SQI_WARNING_EN	BIT(6)
>> +#define MII_INTEN_CONTROL_ERR_EN	BIT(5)
>> +#define MII_INTEN_UV_ERR_EN		BIT(3)
>> +#define MII_INTEN_UV_RECOVERY_EN	BIT(2)
>> +#define MII_INTEN_TEMP_ERR_EN		BIT(1)
>> +#define MII_INTEN_SLEEP_ABORT_EN	BIT(0)
>> +#define MII_INTEN_MASK							\
>> +	(MII_INTEN_PWON_EN | MII_INTEN_WAKEUP_EN |			\
>> +	MII_INTEN_PHY_INIT_FAIL_EN | MII_INTEN_LINK_STATUS_FAIL_EN |	\
>> +	MII_INTEN_LINK_STATUS_UP_EN | MII_INTEN_SYM_ERR_EN |		\
>> +	MII_INTEN_TRAINING_FAILED_EN | MII_INTEN_SQI_WARNING_EN |	\
>> +	MII_INTEN_CONTROL_ERR_EN | MII_INTEN_UV_ERR_EN |		\
>> +	MII_INTEN_UV_RECOVERY_EN | MII_INTEN_TEMP_ERR_EN |		\
>> +	MII_INTEN_SLEEP_ABORT_EN)
> 
> Why do you enable all these interrupt sources? As I said, phylib needs
> link change info only.

Because I need them to reliably detect that the link state changed.

>> +
>>  #define MII_COMMSTAT			23
>>  #define MII_COMMSTAT_LINK_UP		BIT(15)
>>  
>> @@ -239,6 +262,25 @@ static int tja11xx_read_status(struct phy_device *phydev)
>>  	return 0;
>>  }
>>  
>> +static int tja11xx_config_intr(struct phy_device *phydev)
>> +{
>> +	int ret;
>> +
>> +	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
>> +		ret = phy_write(phydev, MII_INTEN, MII_INTEN_MASK);
>> +	else
>> +		ret = phy_write(phydev, MII_INTEN, 0);
>> +
>> +	return ret < 0 ? ret : 0;
> 
> phy_write returns only 0 or negative errno. You don't need
> variable ret.

OK

-- 
Best regards,
Marek Vasut

  reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-28 19:23 Marek Vasut
2019-05-28 19:28 ` Heiner Kallweit
2019-05-28 19:31   ` Marek Vasut [this message]
2019-05-28 19:35     ` Heiner Kallweit
2019-05-28 19:46       ` Marek Vasut
2019-05-28 19:58         ` Andrew Lunn
2019-05-28 20:00           ` Marek Vasut
2019-05-28 21:22             ` Andrew Lunn
2019-05-28 21:33               ` Marek Vasut
2019-05-29 23:29                 ` Andrew Lunn
2019-05-29 23:46                   ` Marek Vasut
2019-06-13 15:42                     ` Marek Vasut
2019-06-17 17:16                       ` Andrew Lunn
2019-06-17 17:43                         ` Marek Vasut

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