Commit 75df94d0 authored by Otto Pflüger's avatar Otto Pflüger Committed by Jassi Brar
Browse files

mailbox: sprd: mask interrupts that are not handled 



To reduce the amount of spurious interrupts, disable the interrupts that
are not handled in this driver.

Signed-off-by: default avatarOtto Pflüger <otto.pflueger@abscue.de>
Signed-off-by: default avatarJassi Brar <jassisinghbrar@gmail.com>
parent c6ff9440

drivers/mailbox/sprd-mailbox.c

+4 −6
Original line number Diff line number Diff line
@@ -282,21 +282,19 @@ static int sprd_mbox_startup(struct mbox_chan *chan) 
		/* Select outbox FIFO mode and reset the outbox FIFO status */

		writel(0x0, priv->outbox_base + SPRD_MBOX_FIFO_RST);



		/* Enable inbox FIFO overflow and delivery interrupt */

		val = readl(priv->inbox_base + SPRD_MBOX_IRQ_MSK);

		val &= ~(SPRD_INBOX_FIFO_OVERFLOW_IRQ | SPRD_INBOX_FIFO_DELIVER_IRQ);

		/* Enable inbox FIFO delivery interrupt */

		val = SPRD_INBOX_FIFO_IRQ_MASK;

		val &= ~SPRD_INBOX_FIFO_DELIVER_IRQ;

		writel(val, priv->inbox_base + SPRD_MBOX_IRQ_MSK);



		/* Enable outbox FIFO not empty interrupt */

		val = readl(priv->outbox_base + SPRD_MBOX_IRQ_MSK);

		val = SPRD_OUTBOX_FIFO_IRQ_MASK;

		val &= ~SPRD_OUTBOX_FIFO_NOT_EMPTY_IRQ;

		writel(val, priv->outbox_base + SPRD_MBOX_IRQ_MSK);



		/* Enable supplementary outbox as the fundamental one */

		if (priv->supp_base) {

			writel(0x0, priv->supp_base + SPRD_MBOX_FIFO_RST);

			val = readl(priv->supp_base + SPRD_MBOX_IRQ_MSK);

			val &= ~SPRD_OUTBOX_FIFO_NOT_EMPTY_IRQ;

			writel(val, priv->supp_base + SPRD_MBOX_IRQ_MSK);

		}

	}