On 28.05.2019 21:31, Marek Vasut wrote: > 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@xxxxxxx> >>> Cc: Andrew Lunn <andrew@xxxxxxx> >>> Cc: Florian Fainelli <f.fainelli@xxxxxxxxx> >>> Cc: Guenter Roeck <linux@xxxxxxxxxxxx> >>> Cc: Heiner Kallweit <hkallweit1@xxxxxxxxx> >>> Cc: Jean Delvare <jdelvare@xxxxxxxx> >>> Cc: linux-hwmon@xxxxxxxxxxxxxxx >>> --- >>> 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. > Hmm, e.g. this one MII_INTEN_TEMP_ERR_EN doesn't seem to be related to a link status change. Name sounds like it just reports exceeding a temperature threshold. >>> + >>> #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 >