[PATCH v6 1/2] dma: arm-dma350: enable ANYCH interrupt for shared IRQ wiring

[Jun Guo <jun.guo@cixtech.com>]

Enable DMANSECCTRL.INTREN_ANYCHINTR during probe so channel
interrupts are propagated when integrators wire DMA-350 channels
onto a shared IRQ line.

Signed-off-by: Jun Guo <jun.guo@cixtech.com>
---
 drivers/dma/arm-dma350.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/dma/arm-dma350.c b/drivers/dma/arm-dma350.c
index 84220fa83029..09403aca8bb0 100644
--- a/drivers/dma/arm-dma350.c
+++ b/drivers/dma/arm-dma350.c
@@ -13,6 +13,11 @@
 #include "dmaengine.h"
 #include "virt-dma.h"
 
+#define DMANSECCTRL		0x200
+
+#define NSEC_CTRL		0x0c
+#define INTREN_ANYCHINTR_EN	BIT(0)
+
 #define DMAINFO			0x0f00
 
 #define DMA_BUILDCFG0		0xb0
@@ -582,6 +587,10 @@ static int d350_probe(struct platform_device *pdev)
 	dmac->dma.device_issue_pending = d350_issue_pending;
 	INIT_LIST_HEAD(&dmac->dma.channels);
 
+	reg = readl_relaxed(base + DMANSECCTRL + NSEC_CTRL);
+	writel_relaxed(reg | INTREN_ANYCHINTR_EN,
+		       base + DMANSECCTRL + NSEC_CTRL);
+
 	/* Would be nice to have per-channel caps for this... */
 	memset = true;
 	for (int i = 0; i < nchan; i++) {
-- 
2.34.1