Commit ed91c13d authored by Russell King's avatar Russell King
Browse files

dmaengine: PL08x: get src/dst addr direct from dma_slave_config struct 



Add a dma_slave_config struct to struct pl08x_dma_chan, and move the
src_addr/dst_addr arguments into this struct.  This is a step away
from using the dma_slave_config's direction member.

Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Tested-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 550ec36f

drivers/dma/amba-pl08x.c

+7 −8
Original line number Diff line number Diff line
@@ -239,8 +239,7 @@ struct pl08x_dma_chan { 
	struct tasklet_struct tasklet;

	const char *name;

	const struct pl08x_channel_data *cd;

	dma_addr_t src_addr;

	dma_addr_t dst_addr;

	struct dma_slave_config cfg;

	u32 src_cctl;

	u32 dst_cctl;

	enum dma_transfer_direction runtime_direction;
@@ -1245,6 +1244,8 @@ static int dma_set_runtime_config(struct dma_chan *chan, 
		return -EINVAL;

	}



	plchan->cfg = *config;



	cctl |= width << PL080_CONTROL_SWIDTH_SHIFT;

	cctl |= width << PL080_CONTROL_DWIDTH_SHIFT;
@@ -1263,12 +1264,10 @@ static int dma_set_runtime_config(struct dma_chan *chan, 
	plchan->device_fc = config->device_fc;



	if (plchan->runtime_direction == DMA_DEV_TO_MEM) {

		plchan->src_addr = config->src_addr;

		plchan->src_cctl = pl08x_cctl(cctl) | PL080_CONTROL_DST_INCR |

			pl08x_select_bus(plchan->cd->periph_buses,

					 pl08x->mem_buses);

	} else {

		plchan->dst_addr = config->dst_addr;

		plchan->dst_cctl = pl08x_cctl(cctl) | PL080_CONTROL_SRC_INCR |

			pl08x_select_bus(pl08x->mem_buses,

					 plchan->cd->periph_buses);
@@ -1482,10 +1481,10 @@ static struct dma_async_tx_descriptor *pl08x_prep_slave_sg( 


	if (direction == DMA_MEM_TO_DEV) {

		txd->cctl = plchan->dst_cctl;

		slave_addr = plchan->dst_addr;

		slave_addr = plchan->cfg.dst_addr;

	} else if (direction == DMA_DEV_TO_MEM) {

		txd->cctl = plchan->src_cctl;

		slave_addr = plchan->src_addr;

		slave_addr = plchan->cfg.src_addr;

	} else {

		pl08x_free_txd(pl08x, txd);

		dev_err(&pl08x->adev->dev,
@@ -1790,8 +1789,8 @@ static void pl08x_dma_slave_init(struct pl08x_dma_chan *chan) 


	chan->slave = true;

	chan->name = chan->cd->bus_id;

	chan->src_addr = chan->cd->addr;

	chan->dst_addr = chan->cd->addr;

	chan->cfg.src_addr = chan->cd->addr;

	chan->cfg.dst_addr = chan->cd->addr;

	chan->src_cctl = cctl | PL080_CONTROL_DST_INCR |

		pl08x_select_bus(chan->cd->periph_buses, chan->host->mem_buses);

	chan->dst_cctl = cctl | PL080_CONTROL_SRC_INCR |

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