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net: fec: add WoL support for i.MX8MQ
By default FEC driver treat irq[0] (i.e. int0 described in dt-binding) as wakeup interrupt, but this situation changed on i.MX8M serials, SoC integration guys mix wakeup interrupt signal into int2 interrupt line. This patch introduces FEC_QUIRK_WAKEUP_FROM_INT2 to indicate int2 as wakeup interrupt for i.MX8MQ. Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com> Link: https://lore.kernel.org/r/20210812070948.25797-1-qiangqing.zhang@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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2 changed files with 23 additions and 5 deletions
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@ -492,6 +492,9 @@ struct bufdesc_ex {
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*/
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#define FEC_QUIRK_DELAYED_CLKS_SUPPORT (1 << 21)
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/* i.MX8MQ SoC integration mix wakeup interrupt signal into "int2" interrupt line. */
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#define FEC_QUIRK_WAKEUP_FROM_INT2 (1 << 22)
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struct bufdesc_prop {
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int qid;
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/* Address of Rx and Tx buffers */
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@ -580,6 +583,7 @@ struct fec_enet_private {
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bool bufdesc_ex;
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int pause_flag;
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int wol_flag;
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int wake_irq;
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u32 quirks;
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struct napi_struct napi;
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@ -142,7 +142,7 @@ static const struct fec_devinfo fec_imx8mq_info = {
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FEC_QUIRK_ERR007885 | FEC_QUIRK_BUG_CAPTURE |
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FEC_QUIRK_HAS_RACC | FEC_QUIRK_HAS_COALESCE |
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FEC_QUIRK_CLEAR_SETUP_MII | FEC_QUIRK_HAS_MULTI_QUEUES |
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FEC_QUIRK_HAS_EEE,
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FEC_QUIRK_HAS_EEE | FEC_QUIRK_WAKEUP_FROM_INT2,
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};
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static const struct fec_devinfo fec_imx8qm_info = {
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@ -2878,12 +2878,12 @@ fec_enet_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
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device_set_wakeup_enable(&ndev->dev, wol->wolopts & WAKE_MAGIC);
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if (device_may_wakeup(&ndev->dev)) {
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fep->wol_flag |= FEC_WOL_FLAG_ENABLE;
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if (fep->irq[0] > 0)
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enable_irq_wake(fep->irq[0]);
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if (fep->wake_irq > 0)
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enable_irq_wake(fep->wake_irq);
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} else {
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fep->wol_flag &= (~FEC_WOL_FLAG_ENABLE);
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if (fep->irq[0] > 0)
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disable_irq_wake(fep->irq[0]);
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if (fep->wake_irq > 0)
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disable_irq_wake(fep->wake_irq);
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}
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return 0;
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@ -3696,6 +3696,17 @@ static int fec_enet_get_irq_cnt(struct platform_device *pdev)
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return irq_cnt;
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}
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static void fec_enet_get_wakeup_irq(struct platform_device *pdev)
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{
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struct net_device *ndev = platform_get_drvdata(pdev);
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struct fec_enet_private *fep = netdev_priv(ndev);
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if (fep->quirks & FEC_QUIRK_WAKEUP_FROM_INT2)
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fep->wake_irq = fep->irq[2];
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else
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fep->wake_irq = fep->irq[0];
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}
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static int fec_enet_init_stop_mode(struct fec_enet_private *fep,
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struct device_node *np)
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{
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@ -3935,6 +3946,9 @@ fec_probe(struct platform_device *pdev)
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fep->irq[i] = irq;
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}
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/* Decide which interrupt line is wakeup capable */
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fec_enet_get_wakeup_irq(pdev);
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ret = fec_enet_mii_init(pdev);
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if (ret)
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goto failed_mii_init;
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