Re: [PATCH 03/16] net: phy: adin: add support for interrupts

Andrew Lunn
2019-08-05T14:21:28Z

On Mon, Aug 05, 2019 at 07:54:40PM +0300, Alexandru Ardelean wrote:
> This change adds support for enabling PHY interrupts that can be used by
> the PHY framework to get signal for link/speed/auto-negotiation changes.
>
> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
> ---
> drivers/net/phy/adin.c | 44 ++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 44 insertions(+)
>
> diff --git a/drivers/net/phy/adin.c b/drivers/net/phy/adin.c
> index c100a0dd95cd..b75c723bda79 100644
> --- a/drivers/net/phy/adin.c
> +++ b/drivers/net/phy/adin.c
> @@ -14,6 +14,22 @@
> #define PHY_ID_ADIN1200 0x0283bc20
> #define PHY_ID_ADIN1300 0x0283bc30
>
> +#define ADIN1300_INT_MASK_REG 0x0018
> +#define ADIN1300_INT_MDIO_SYNC_EN BIT(9)
> +#define ADIN1300_INT_ANEG_STAT_CHNG_EN BIT(8)
> +#define ADIN1300_INT_ANEG_PAGE_RX_EN BIT(6)
> +#define ADIN1300_INT_IDLE_ERR_CNT_EN BIT(5)
> +#define ADIN1300_INT_MAC_FIFO_OU_EN BIT(4)
> +#define ADIN1300_INT_RX_STAT_CHNG_EN BIT(3)
> +#define ADIN1300_INT_LINK_STAT_CHNG_EN BIT(2)
> +#define ADIN1300_INT_SPEED_CHNG_EN BIT(1)
> +#define ADIN1300_INT_HW_IRQ_EN BIT(0)
> +#define ADIN1300_INT_MASK_EN \
> + (ADIN1300_INT_ANEG_STAT_CHNG_EN | ADIN1300_INT_ANEG_PAGE_RX_EN | \
> + ADIN1300_INT_LINK_STAT_CHNG_EN | ADIN1300_INT_SPEED_CHNG_EN | \
> + ADIN1300_INT_HW_IRQ_EN)
> +#define ADIN1300_INT_STATUS_REG 0x0019
> +
> static int adin_config_init(struct phy_device *phydev)
> {
> int rc;
> @@ -25,15 +41,40 @@ static int adin_config_init(struct phy_device *phydev)
> return 0;
> }
>
> +static int adin_phy_ack_intr(struct phy_device *phydev)
> +{
> + int ret;
> +
> + /* Clear pending interrupts. */
> + ret = phy_read(phydev, ADIN1300_INT_STATUS_REG);
> + if (ret < 0)
> + return ret;
> +
> + return 0;

Please go through the whole driver and throw out all the needless

if (ret < 0)
return ret;

return 0;

Thanks
Andrew