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| author | Pandith N <pandith.n@intel.com> | 2021-10-01 16:08:11 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2021-10-18 08:44:19 +0200 |
| commit | 93a7d32e9f4b8bad722a8c8c83c579a2f6a5aec3 (patch) | |
| tree | efc7573d52d8f4cfb2a6a09b18da1b344b784cf6 /drivers/dma | |
| parent | dmaengine: dw-axi-dmac: support DMAX_NUM_CHANNELS > 8 (diff) | |
| download | linux-93a7d32e9f4b8bad722a8c8c83c579a2f6a5aec3.tar.xz linux-93a7d32e9f4b8bad722a8c8c83c579a2f6a5aec3.zip | |
dmaengine: dw-axi-dmac: Hardware handshake configuration
Added hardware handshake selection in channel config,
for mem2per and per2mem case.
The peripheral specific handshake interface needs to be
programmed in src_per, dst_per bits of CHx_CFG register.
Signed-off-by: Pandith N <pandith.n@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211001140812.24977-3-pandith.n@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c index 9a8231244c42..f46fd9895a13 100644 --- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c +++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c @@ -396,6 +396,8 @@ static void axi_chan_block_xfer_start(struct axi_dma_chan *chan, DWAXIDMAC_TT_FC_MEM_TO_PER_DMAC; if (chan->chip->apb_regs) config.dst_per = chan->id; + else + config.dst_per = chan->hw_handshake_num; break; case DMA_DEV_TO_MEM: config.tt_fc = chan->config.device_fc ? @@ -403,6 +405,8 @@ static void axi_chan_block_xfer_start(struct axi_dma_chan *chan, DWAXIDMAC_TT_FC_PER_TO_MEM_DMAC; if (chan->chip->apb_regs) config.src_per = chan->id; + else + config.src_per = chan->hw_handshake_num; break; default: break; |