When commit 6f166312c6ea2 ("dmaengine: mv_xor: add support for a38x
command in descriptor mode") added support for the descriptor mode
available in Marvell Armada 38x and later SoCs, it added a new
function mv_chan_set_mode_to_desc() which allows to configure a XOR
channel to get the specific operation to be done from each individual
DMA descriptor.
However, this function was mainly a duplicate of the existing
mv_chan_set_mode(), with just the operation being different.
This commit re-organizes the code into a single mv_chan_set_mode()
function, which takes the operation mode as argument, and the
mv_xor_channel_add() function decides whether to use
XOR_OPERATION_MODE_IN_DESC or XOR_OPERATION_MODE_XOR.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
---
drivers/dma/mv_xor.c | 41 +++--------------------------------------
1 file changed, 3 insertions(+), 38 deletions(-)
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index 2d03379..a95878c 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -139,45 +139,10 @@ static void mv_chan_clear_err_status(struct mv_xor_chan *chan)
}
static void mv_chan_set_mode(struct mv_xor_chan *chan,
- enum dma_transaction_type type)
+ u32 op_mode)
{
- u32 op_mode;
u32 config = readl_relaxed(XOR_CONFIG(chan));
- switch (type) {
- case DMA_XOR:
- op_mode = XOR_OPERATION_MODE_XOR;
- break;
- case DMA_MEMCPY:
- op_mode = XOR_OPERATION_MODE_MEMCPY;
- break;
- default:
- dev_err(mv_chan_to_devp(chan),
- "error: unsupported operation %d\n",
- type);
- BUG();
- return;
- }
-
- config &= ~0x7;
- config |= op_mode;
-
-#if defined(__BIG_ENDIAN)
- config |= XOR_DESCRIPTOR_SWAP;
-#else
- config &= ~XOR_DESCRIPTOR_SWAP;
-#endif
-
- writel_relaxed(config, XOR_CONFIG(chan));
-}
-
-static void mv_chan_set_mode_to_desc(struct mv_xor_chan *chan)
-{
- u32 op_mode;
- u32 config = readl_relaxed(XOR_CONFIG(chan));
-
- op_mode = XOR_OPERATION_MODE_IN_DESC;
-
config &= ~0x7;
config |= op_mode;
@@ -1042,9 +1007,9 @@ mv_xor_channel_add(struct mv_xor_device *xordev,
mv_chan_unmask_interrupts(mv_chan);
if (mv_chan->op_in_desc == XOR_MODE_IN_DESC)
- mv_chan_set_mode_to_desc(mv_chan);
+ mv_chan_set_mode(mv_chan, XOR_OPERATION_MODE_IN_DESC);
else
- mv_chan_set_mode(mv_chan, DMA_XOR);
+ mv_chan_set_mode(mv_chan, XOR_OPERATION_MODE_XOR);
spin_lock_init(&mv_chan->lock);
INIT_LIST_HEAD(&mv_chan->chain);
--
2.6.4
--
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