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charset="utf-8" From: Ciprian Marian Costea Introduce 'FLEXCAN_QUIRK_SECONDARY_MB_IRQ' quirk to handle a FlexCAN hardware module integration particularity where two ranges of mailboxes are controlled by separate hardware interrupt lines. The same 'flexcan_irq' handler is used for both separate mailbox interrupt lines, with no other changes. Signed-off-by: Ciprian Marian Costea Reviewed-by: Vincent Mailhol --- drivers/net/can/flexcan/flexcan-core.c | 24 +++++++++++++++++++++++- drivers/net/can/flexcan/flexcan.h | 5 +++++ 2 files changed, 28 insertions(+), 1 deletion(-) diff --git a/drivers/net/can/flexcan/flexcan-core.c b/drivers/net/can/flexc= an/flexcan-core.c index ac1a860986df..3ae54305bf33 100644 --- a/drivers/net/can/flexcan/flexcan-core.c +++ b/drivers/net/can/flexcan/flexcan-core.c @@ -1762,14 +1762,25 @@ static int flexcan_open(struct net_device *dev) goto out_free_irq_boff; } =20 + if (priv->devtype_data.quirks & FLEXCAN_QUIRK_SECONDARY_MB_IRQ) { + err =3D request_irq(priv->irq_secondary_mb, + flexcan_irq, IRQF_SHARED, dev->name, dev); + if (err) + goto out_free_irq_err; + } + flexcan_chip_interrupts_enable(dev); =20 netif_start_queue(dev); =20 return 0; =20 + out_free_irq_err: + if (priv->devtype_data.quirks & FLEXCAN_QUIRK_NR_IRQ_3) + free_irq(priv->irq_err, dev); out_free_irq_boff: - free_irq(priv->irq_boff, dev); + if (priv->devtype_data.quirks & FLEXCAN_QUIRK_NR_IRQ_3) + free_irq(priv->irq_boff, dev); out_free_irq: free_irq(dev->irq, dev); out_can_rx_offload_disable: @@ -1799,6 +1810,9 @@ static int flexcan_close(struct net_device *dev) free_irq(priv->irq_boff, dev); } =20 + if (priv->devtype_data.quirks & FLEXCAN_QUIRK_SECONDARY_MB_IRQ) + free_irq(priv->irq_secondary_mb, dev); + free_irq(dev->irq, dev); can_rx_offload_disable(&priv->offload); flexcan_chip_stop_disable_on_error(dev); @@ -2187,6 +2201,14 @@ static int flexcan_probe(struct platform_device *pde= v) } } =20 + if (priv->devtype_data.quirks & FLEXCAN_QUIRK_SECONDARY_MB_IRQ) { + priv->irq_secondary_mb =3D platform_get_irq_byname(pdev, "mb-1"); + if (priv->irq_secondary_mb < 0) { + err =3D priv->irq_secondary_mb; + goto failed_platform_get_irq; + } + } + if (priv->devtype_data.quirks & FLEXCAN_QUIRK_SUPPORT_FD) { priv->can.ctrlmode_supported |=3D CAN_CTRLMODE_FD | CAN_CTRLMODE_FD_NON_ISO; diff --git a/drivers/net/can/flexcan/flexcan.h b/drivers/net/can/flexcan/fl= excan.h index 4933d8c7439e..2cf886618c96 100644 --- a/drivers/net/can/flexcan/flexcan.h +++ b/drivers/net/can/flexcan/flexcan.h @@ -70,6 +70,10 @@ #define FLEXCAN_QUIRK_SUPPORT_RX_FIFO BIT(16) /* Setup stop mode with ATF SCMI protocol to support wakeup */ #define FLEXCAN_QUIRK_SETUP_STOP_MODE_SCMI BIT(17) +/* Device has two separate interrupt lines for two mailbox ranges, which + * both need to have an interrupt handler registered. + */ +#define FLEXCAN_QUIRK_SECONDARY_MB_IRQ BIT(18) =20 struct flexcan_devtype_data { u32 quirks; /* quirks needed for different IP cores */ @@ -107,6 +111,7 @@ struct flexcan_priv { =20 int irq_boff; int irq_err; + int irq_secondary_mb; =20 /* IPC handle when setup stop mode by System Controller firmware(scfw) */ struct imx_sc_ipc *sc_ipc_handle; --=20 2.45.2