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dma40: extract lcla code into separate function

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Acked-by: Per Forlin <per.forlin@stericsson.com>
Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Rabin Vincent 2011-01-25 11:18:31 +01:00 committed by Dan Williams
parent 7f933bed96
commit e65889c75c
1 changed files with 51 additions and 43 deletions
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94
drivers/dma/ste_dma40.c
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@ -521,54 +521,62 @@ static void d40_phy_lli_load(struct d40_chan *chan, struct d40_desc *desc)
writel(lli_dst->reg_lnk, base + D40_CHAN_REG_SDLNK);
}
static void d40_log_lli_to_lcxa(struct d40_chan *chan, struct d40_desc *desc)
{
struct d40_lcla_pool *pool = &chan->base->lcla_pool;
struct d40_log_lli_bidir *lli = &desc->lli_log;
int lli_current = desc->lli_current;
int lli_len = desc->lli_len;
int curr_lcla = -EINVAL;
if (lli_len - lli_current > 1)
curr_lcla = d40_lcla_alloc_one(chan, desc);
d40_log_lli_lcpa_write(chan->lcpa,
&lli->dst[lli_current],
&lli->src[lli_current],
curr_lcla);
lli_current++;
for (; lli_current < lli_len; lli_current++) {
unsigned int lcla_offset = chan->phy_chan->num * 1024 +
8 * curr_lcla * 2;
struct d40_log_lli *lcla = pool->base + lcla_offset;
int next_lcla;
if (lli_current + 1 < lli_len)
next_lcla = d40_lcla_alloc_one(chan, desc);
else
next_lcla = -EINVAL;
d40_log_lli_lcla_write(lcla,
&lli->dst[lli_current],
&lli->src[lli_current],
next_lcla);
dma_sync_single_range_for_device(chan->base->dev,
pool->dma_addr, lcla_offset,
2 * sizeof(struct d40_log_lli),
DMA_TO_DEVICE);
curr_lcla = next_lcla;
if (curr_lcla == -EINVAL) {
lli_current++;
break;
}
}
desc->lli_current = lli_current;
}
static void d40_desc_load(struct d40_chan *d40c, struct d40_desc *d40d)
{
int curr_lcla = -EINVAL, next_lcla;
if (chan_is_physical(d40c)) {
d40_phy_lli_load(d40c, d40d);
d40d->lli_current = d40d->lli_len;
} else {
if ((d40d->lli_len - d40d->lli_current) > 1)
curr_lcla = d40_lcla_alloc_one(d40c, d40d);
d40_log_lli_lcpa_write(d40c->lcpa,
&d40d->lli_log.dst[d40d->lli_current],
&d40d->lli_log.src[d40d->lli_current],
curr_lcla);
d40d->lli_current++;
for (; d40d->lli_current < d40d->lli_len; d40d->lli_current++) {
unsigned int lcla_offset = d40c->phy_chan->num * 1024 +
8 * curr_lcla * 2;
struct d40_lcla_pool *pool = &d40c->base->lcla_pool;
struct d40_log_lli *lcla = pool->base + lcla_offset;
if (d40d->lli_current + 1 < d40d->lli_len)
next_lcla = d40_lcla_alloc_one(d40c, d40d);
else
next_lcla = -EINVAL;
d40_log_lli_lcla_write(lcla,
&d40d->lli_log.dst[d40d->lli_current],
&d40d->lli_log.src[d40d->lli_current],
next_lcla);
dma_sync_single_range_for_device(d40c->base->dev,
pool->dma_addr, lcla_offset,
2 * sizeof(struct d40_log_lli),
DMA_TO_DEVICE);
curr_lcla = next_lcla;
if (curr_lcla == -EINVAL) {
d40d->lli_current++;
break;
}
}
}
} else
d40_log_lli_to_lcxa(d40c, d40d);
}
static struct d40_desc *d40_first_active_get(struct d40_chan *d40c)