dma: mv_xor: allow channels to be registered directly from the main device
Extend the XOR engine driver (currently called "mv_xor_shared") so
that XOR channels can be passed in the platform_data structure, and be
registered from there.
This will allow the users of the driver to be converted to the single
platform_driver variant of the mv_xor driver.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
diff --git a/drivers/dma/mv_xor.h b/drivers/dma/mv_xor.h
index a0641ae..686575f 100644
--- a/drivers/dma/mv_xor.h
+++ b/drivers/dma/mv_xor.h
@@ -26,6 +26,7 @@
#define USE_TIMER
#define MV_XOR_SLOT_SIZE 64
#define MV_XOR_THRESHOLD 1
+#define MV_XOR_MAX_CHANNELS 2
#define XOR_OPERATION_MODE_XOR 0
#define XOR_OPERATION_MODE_MEMCPY 2
@@ -53,9 +54,10 @@
#define WINDOW_BAR_ENABLE(chan) (0x240 + ((chan) << 2))
struct mv_xor_shared_private {
- void __iomem *xor_base;
- void __iomem *xor_high_base;
- struct clk *clk;
+ void __iomem *xor_base;
+ void __iomem *xor_high_base;
+ struct clk *clk;
+ struct mv_xor_device *channels[MV_XOR_MAX_CHANNELS];
};
