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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2017-11-08 13:02:25 +0300
committerVinod Koul <vinod.koul@intel.com>2017-11-08 17:21:40 +0300
commit288e7560e4d3e259aa28f8f58a8dfe63627a1bf6 (patch)
treef8c8b1cb7e1fc9dc20c8c3c73d075e7444354de8 /drivers/dma
parent05ec62a106a3b358cdc6ac41025b320dc2dbcb3f (diff)
downloadlinux-288e7560e4d3e259aa28f8f58a8dfe63627a1bf6.tar.xz
dmaengine: ti-dma-crossbar: Correct am335x/am43xx mux value type
The used 0x1f mask is only valid for am335x family of SoC, different family using this type of crossbar might have different number of electable events. In case of am43xx family 0x3f mask should have been used for example. Instead of trying to handle each family's mask, just use u8 type to store the mux value since the event offsets are aligned to byte offset. Fixes: 42dbdcc6bf965 ("dmaengine: ti-dma-crossbar: Add support for crossbar on AM33xx/AM43xx") Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/ti-dma-crossbar.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/dma/ti-dma-crossbar.c b/drivers/dma/ti-dma-crossbar.c
index 2f65a8fde21d..10ef9d5d5a66 100644
--- a/drivers/dma/ti-dma-crossbar.c
+++ b/drivers/dma/ti-dma-crossbar.c
@@ -49,12 +49,12 @@ struct ti_am335x_xbar_data {
struct ti_am335x_xbar_map {
u16 dma_line;
- u16 mux_val;
+ u8 mux_val;
};
-static inline void ti_am335x_xbar_write(void __iomem *iomem, int event, u16 val)
+static inline void ti_am335x_xbar_write(void __iomem *iomem, int event, u8 val)
{
- writeb_relaxed(val & 0x1f, iomem + event);
+ writeb_relaxed(val, iomem + event);
}
static void ti_am335x_xbar_free(struct device *dev, void *route_data)
@@ -105,7 +105,7 @@ static void *ti_am335x_xbar_route_allocate(struct of_phandle_args *dma_spec,
}
map->dma_line = (u16)dma_spec->args[0];
- map->mux_val = (u16)dma_spec->args[2];
+ map->mux_val = (u8)dma_spec->args[2];
dma_spec->args[2] = 0;
dma_spec->args_count = 2;