From dca2f292ae2126db4c1e86c0eb2c74fa4e500c3c Mon Sep 17 00:00:00 2001
From: Colin Cross <ccross@android.com>
Date: Mon, 18 Oct 2010 15:07:30 -0700
Subject: [PATCH] spi: tegra: Use shared DMA channel
To avoid running out of DMA channels, use the shared DMA channel
for all four Tegra spi controllers.
Change-Id: Iff644253cf7fae36aa2e42321a1ded35a728da4f
Signed-off-by: Colin Cross <ccross@android.com>
---
drivers/spi/spi_tegra.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi_tegra.c b/drivers/spi/spi_tegra.c
index 33226408b447..842ac14f745d 100644
--- a/drivers/spi/spi_tegra.c
+++ b/drivers/spi/spi_tegra.c
@@ -530,7 +530,8 @@ static int __init spi_tegra_probe(struct platform_device *pdev)
INIT_LIST_HEAD(&tspi->queue);
- tspi->rx_dma = tegra_dma_allocate_channel(TEGRA_DMA_MODE_ONESHOT);
+ tspi->rx_dma = tegra_dma_allocate_channel(TEGRA_DMA_MODE_ONESHOT |
+ TEGRA_DMA_SHARED);
if (!tspi->rx_dma) {
dev_err(&pdev->dev, "can not allocate rx dma channel\n");
ret = -ENODEV;
--
2.34.1