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 <ma...@denx.de>
>> Cc: Andrew Lunn <and...@lunn.ch>
>> Cc: Florian Fainelli <f.faine...@gmail.com>
>> Cc: Guenter Roeck <li...@roeck-us.net>
>> Cc: Heiner Kallweit <hkallwe...@gmail.com>
>> Cc: Jean Delvare <jdelv...@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
