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authorPandith N <pandith.n@intel.com>2021-10-01 19:38:11 +0530
committerVinod Koul <vkoul@kernel.org>2021-10-18 12:14:19 +0530
commit93a7d32e9f4b8bad722a8c8c83c579a2f6a5aec3 (patch)
treeefc7573d52d8f4cfb2a6a09b18da1b344b784cf6 /drivers/dma/dw-axi-dmac
parent824351668a413af7d6d88e4ee2c9bee7c60daad2 (diff)
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/dw-axi-dmac')
-rw-r--r--drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c4
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;