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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-05-16 11:02:40 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-07-01 14:15:42 +0100 |
| commit | ed91c13d29d1542fddbb053015d62781faca93e1 (patch) | |
| tree | 366b3ed2b91ac1a791221818a8878231e8fd3f02 /drivers/dma/amba-pl08x.c | |
| parent | 550ec36f507177470a394c4dfffcaf986ca25818 (diff) | |
| download | lwn-ed91c13d29d1542fddbb053015d62781faca93e1.tar.gz lwn-ed91c13d29d1542fddbb053015d62781faca93e1.zip | |
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: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/dma/amba-pl08x.c')
| -rw-r--r-- | drivers/dma/amba-pl08x.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 775efef0349c..31447dbe23a6 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -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 | |