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authorVinod Koul <vinod.koul@intel.com>2018-01-31 09:21:16 +0100
committerVinod Koul <vinod.koul@intel.com>2018-01-31 09:21:16 +0100
commitdb90305b1ffebf57abd2c05e27c2a30a893fb397 (patch)
tree90c4e30d86f0e702120f5b703f2eb6e856df0bae /drivers
parentMerge branch 'topic/tegra' into for-linus (diff)
parentdmaengine: ti-dma-crossbar: Fix event mapping for TPCC_EVT_MUX_60_63 (diff)
downloadlinux-db90305b1ffebf57abd2c05e27c2a30a893fb397.tar.xz
linux-db90305b1ffebf57abd2c05e27c2a30a893fb397.zip
Merge branch 'topic/ti' into for-linus
Diffstat (limited to 'drivers')
-rw-r--r--drivers/dma/ti-dma-crossbar.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/dma/ti-dma-crossbar.c b/drivers/dma/ti-dma-crossbar.c
index 7df910e7c348..9272b173c746 100644
--- a/drivers/dma/ti-dma-crossbar.c
+++ b/drivers/dma/ti-dma-crossbar.c
@@ -54,7 +54,15 @@ struct ti_am335x_xbar_map {
static inline void ti_am335x_xbar_write(void __iomem *iomem, int event, u8 val)
{
- writeb_relaxed(val, iomem + event);
+ /*
+ * TPCC_EVT_MUX_60_63 register layout is different than the
+ * rest, in the sense, that event 63 is mapped to lowest byte
+ * and event 60 is mapped to highest, handle it separately.
+ */
+ if (event >= 60 && event <= 63)
+ writeb_relaxed(val, iomem + (63 - event % 4));
+ else
+ writeb_relaxed(val, iomem + event);
}
static void ti_am335x_xbar_free(struct device *dev, void *route_data)