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.
> +
> #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.
> +}
> +
> +static int tja11xx_ack_interrupt(struct phy_device *phydev)
> +{
> + int ret = phy_read(phydev, MII_INTSRC);
> +
> + return ret < 0 ? ret : 0;
> +}
> +
> static int tja11xx_get_sset_count(struct phy_device *phydev)
> {
> return ARRAY_SIZE(tja11xx_hw_stats);
> @@ -366,6 +408,9 @@ static struct phy_driver tja11xx_driver[] = {
> .suspend = genphy_suspend,
> .resume = genphy_resume,
> .set_loopback = genphy_loopback,
> + /* IRQ related */
> + .config_intr = tja11xx_config_intr,
> + .ack_interrupt = tja11xx_ack_interrupt,
> /* Statistics */
> .get_sset_count = tja11xx_get_sset_count,
> .get_strings = tja11xx_get_strings,
> @@ -381,6 +426,9 @@ static struct phy_driver tja11xx_driver[] = {
> .suspend = genphy_suspend,
> .resume = genphy_resume,
> .set_loopback = genphy_loopback,
> + /* IRQ related */
> + .config_intr = tja11xx_config_intr,
> + .ack_interrupt = tja11xx_ack_interrupt,
> /* Statistics */
> .get_sset_count = tja11xx_get_sset_count,
> .get_strings = tja11xx_get_strings,
>
