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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>
This commit is contained in:
Russell King 2012-05-16 11:02:40 +01:00
parent 550ec36f50
commit ed91c13d29
1 changed files with 7 additions and 8 deletions
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15
drivers/dma/amba-pl08x.c
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@ -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 |