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.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

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;