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DMAENGINE: ste_dma40: various cosmetic clean-ups

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This cleans up some extra newlines, removes some code duplication
and moves the code to comply better with checkpatch.

Signed-off-by: Jonas Aaberg <jonas.aberg@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:
Jonas Aaberg 2010-06-20 21:25:24 +00:00 committed by Dan Williams
parent ff0b12baa5
commit 2a6143407d
2 changed files with 52 additions and 67 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

95
drivers/dma/ste_dma40.c
View file

@ -161,7 +161,8 @@ struct d40_base;
* @pending_tx: The number of pending transfers. Used between interrupt handler
* and tasklet.
* @busy: Set to true when transfer is ongoing on this channel.
* @phy_chan: Pointer to physical channel which this instance runs on.
* @phy_chan: Pointer to physical channel which this instance runs on. If this
* point is NULL, then the channel is not allocated.
* @chan: DMA engine handle.
* @tasklet: Tasklet that gets scheduled from interrupt context to complete a
* transfer and call client callback.
@ -1236,7 +1237,6 @@ static int d40_free_dma(struct d40_chan *d40c)
return -EINVAL;
}
res = d40_channel_execute_command(d40c, D40_DMA_SUSPEND_REQ);
if (res) {
dev_err(&d40c->chan.dev->device, "[%s] suspend failed\n",
@ -1305,8 +1305,6 @@ static int d40_free_dma(struct d40_chan *d40c)
d40c->base->lookup_phy_chans[phy->num] = NULL;
return 0;
}
static int d40_pause(struct dma_chan *chan)
@ -1314,7 +1312,6 @@ static int d40_pause(struct dma_chan *chan)
struct d40_chan *d40c =
container_of(chan, struct d40_chan, chan);
int res;
unsigned long flags;
spin_lock_irqsave(&d40c->lock, flags);
@ -1510,25 +1507,23 @@ struct dma_async_tx_descriptor *stedma40_memcpy_sg(struct dma_chan *chan,
struct scatterlist *sgl_dst,
struct scatterlist *sgl_src,
unsigned int sgl_len,
unsigned long flags)
unsigned long dma_flags)
{
int res;
struct d40_desc *d40d;
struct d40_chan *d40c = container_of(chan, struct d40_chan,
chan);
unsigned long flg;
unsigned long flags;
spin_lock_irqsave(&d40c->lock, flg);
spin_lock_irqsave(&d40c->lock, flags);
d40d = d40_desc_get(d40c);
if (d40d == NULL)
goto err;
memset(d40d, 0, sizeof(struct d40_desc));
d40d->lli_len = sgl_len;
d40d->lli_tx_len = d40d->lli_len;
d40d->txd.flags = flags;
d40d->txd.flags = dma_flags;
if (d40c->log_num != D40_PHY_CHAN) {
if (d40d->lli_len > d40c->base->plat_data->llis_per_log)
@ -1556,7 +1551,7 @@ struct dma_async_tx_descriptor *stedma40_memcpy_sg(struct dma_chan *chan,
d40d->lli_log.src,
d40c->log_def.lcsp1,
d40c->dma_cfg.src_info.data_width,
flags & DMA_PREP_INTERRUPT,
dma_flags & DMA_PREP_INTERRUPT,
d40d->lli_tx_len,
d40c->base->plat_data->llis_per_log);
@ -1566,7 +1561,7 @@ struct dma_async_tx_descriptor *stedma40_memcpy_sg(struct dma_chan *chan,
d40d->lli_log.dst,
d40c->log_def.lcsp3,
d40c->dma_cfg.dst_info.data_width,
flags & DMA_PREP_INTERRUPT,
dma_flags & DMA_PREP_INTERRUPT,
d40d->lli_tx_len,
d40c->base->plat_data->llis_per_log);
@ -1612,11 +1607,11 @@ struct dma_async_tx_descriptor *stedma40_memcpy_sg(struct dma_chan *chan,
d40d->txd.tx_submit = d40_tx_submit;
spin_unlock_irqrestore(&d40c->lock, flg);
spin_unlock_irqrestore(&d40c->lock, flags);
return &d40d->txd;
err:
spin_unlock_irqrestore(&d40c->lock, flg);
spin_unlock_irqrestore(&d40c->lock, flags);
return NULL;
}
EXPORT_SYMBOL(stedma40_memcpy_sg);
@ -1729,15 +1724,15 @@ static struct dma_async_tx_descriptor *d40_prep_memcpy(struct dma_chan *chan,
dma_addr_t dst,
dma_addr_t src,
size_t size,
unsigned long flags)
unsigned long dma_flags)
{
struct d40_desc *d40d;
struct d40_chan *d40c = container_of(chan, struct d40_chan,
chan);
unsigned long flg;
unsigned long flags;
int err = 0;
spin_lock_irqsave(&d40c->lock, flg);
spin_lock_irqsave(&d40c->lock, flags);
d40d = d40_desc_get(d40c);
if (d40d == NULL) {
@ -1746,9 +1741,7 @@ static struct dma_async_tx_descriptor *d40_prep_memcpy(struct dma_chan *chan,
goto err;
}
memset(d40d, 0, sizeof(struct d40_desc));
d40d->txd.flags = flags;
d40d->txd.flags = dma_flags;
dma_async_tx_descriptor_init(&d40d->txd, chan);
@ -1817,7 +1810,7 @@ static struct dma_async_tx_descriptor *d40_prep_memcpy(struct dma_chan *chan,
d40d->lli_pool.size, DMA_TO_DEVICE);
}
spin_unlock_irqrestore(&d40c->lock, flg);
spin_unlock_irqrestore(&d40c->lock, flags);
return &d40d->txd;
err_fill_lli:
@ -1825,7 +1818,7 @@ static struct dma_async_tx_descriptor *d40_prep_memcpy(struct dma_chan *chan,
"[%s] Failed filling in PHY LLI\n", __func__);
d40_pool_lli_free(d40d);
err:
spin_unlock_irqrestore(&d40c->lock, flg);
spin_unlock_irqrestore(&d40c->lock, flags);
return NULL;
}
@ -1834,7 +1827,7 @@ static int d40_prep_slave_sg_log(struct d40_desc *d40d,
struct scatterlist *sgl,
unsigned int sg_len,
enum dma_data_direction direction,
unsigned long flags)
unsigned long dma_flags)
{
dma_addr_t dev_addr = 0;
int total_size;
@ -1860,32 +1853,24 @@ static int d40_prep_slave_sg_log(struct d40_desc *d40d,
if (d40_lcla_id_get(d40c, &d40c->base->lcla_pool) != 0)
d40d->lli_tx_len = 1;
if (direction == DMA_FROM_DEVICE) {
if (direction == DMA_FROM_DEVICE)
dev_addr = d40c->base->plat_data->dev_rx[d40c->dma_cfg.src_dev_type];
total_size = d40_log_sg_to_dev(&d40c->lcla,
sgl, sg_len,
&d40d->lli_log,
&d40c->log_def,
d40c->dma_cfg.src_info.data_width,
d40c->dma_cfg.dst_info.data_width,
direction,
flags & DMA_PREP_INTERRUPT,
dev_addr, d40d->lli_tx_len,
d40c->base->plat_data->llis_per_log);
} else if (direction == DMA_TO_DEVICE) {
else if (direction == DMA_TO_DEVICE)
dev_addr = d40c->base->plat_data->dev_tx[d40c->dma_cfg.dst_dev_type];
total_size = d40_log_sg_to_dev(&d40c->lcla,
sgl, sg_len,
&d40d->lli_log,
&d40c->log_def,
d40c->dma_cfg.src_info.data_width,
d40c->dma_cfg.dst_info.data_width,
direction,
flags & DMA_PREP_INTERRUPT,
dev_addr, d40d->lli_tx_len,
d40c->base->plat_data->llis_per_log);
} else
else
return -EINVAL;
total_size = d40_log_sg_to_dev(&d40c->lcla,
sgl, sg_len,
&d40d->lli_log,
&d40c->log_def,
d40c->dma_cfg.src_info.data_width,
d40c->dma_cfg.dst_info.data_width,
direction,
dma_flags & DMA_PREP_INTERRUPT,
dev_addr, d40d->lli_tx_len,
d40c->base->plat_data->llis_per_log);
if (total_size < 0)
return -EINVAL;
@ -1897,7 +1882,7 @@ static int d40_prep_slave_sg_phy(struct d40_desc *d40d,
struct scatterlist *sgl,
unsigned int sgl_len,
enum dma_data_direction direction,
unsigned long flags)
unsigned long dma_flags)
{
dma_addr_t src_dev_addr;
dma_addr_t dst_dev_addr;
@ -1954,12 +1939,12 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
struct scatterlist *sgl,
unsigned int sg_len,
enum dma_data_direction direction,
unsigned long flags)
unsigned long dma_flags)
{
struct d40_desc *d40d;
struct d40_chan *d40c = container_of(chan, struct d40_chan,
chan);
unsigned long flg;
unsigned long flags;
int err;
if (d40c->dma_cfg.pre_transfer)
@ -1967,9 +1952,9 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
d40c->dma_cfg.pre_transfer_data,
sg_dma_len(sgl));
spin_lock_irqsave(&d40c->lock, flg);
spin_lock_irqsave(&d40c->lock, flags);
d40d = d40_desc_get(d40c);
spin_unlock_irqrestore(&d40c->lock, flg);
spin_unlock_irqrestore(&d40c->lock, flags);
if (d40d == NULL)
return NULL;
@ -1978,10 +1963,10 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
if (d40c->log_num != D40_PHY_CHAN)
err = d40_prep_slave_sg_log(d40d, d40c, sgl, sg_len,
direction, flags);
direction, dma_flags);
else
err = d40_prep_slave_sg_phy(d40d, d40c, sgl, sg_len,
direction, flags);
direction, dma_flags);
if (err) {
dev_err(&d40c->chan.dev->device,
"[%s] Failed to prepare %s slave sg job: %d\n",
@ -1990,7 +1975,7 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
return NULL;
}
d40d->txd.flags = flags;
d40d->txd.flags = dma_flags;
dma_async_tx_descriptor_init(&d40d->txd, chan);

24
drivers/dma/ste_dma40_ll.c
View file

@ -430,25 +430,25 @@ void d40_log_lli_write(struct d40_log_lli_full *lcpa,
struct d40_log_lli *lli_src,
int llis_per_log)
{
u32 slos = 0;
u32 dlos = 0;
u32 slos;
u32 dlos;
int i;
lcpa->lcsp0 = lli_src->lcsp02;
lcpa->lcsp1 = lli_src->lcsp13;
lcpa->lcsp2 = lli_dst->lcsp02;
lcpa->lcsp3 = lli_dst->lcsp13;
writel(lli_src->lcsp02, &lcpa->lcsp0);
writel(lli_src->lcsp13, &lcpa->lcsp1);
writel(lli_dst->lcsp02, &lcpa->lcsp2);
writel(lli_dst->lcsp13, &lcpa->lcsp3);
slos = lli_src->lcsp13 & D40_MEM_LCSP1_SLOS_MASK;
dlos = lli_dst->lcsp13 & D40_MEM_LCSP3_DLOS_MASK;
for (i = 0; (i < llis_per_log) && slos && dlos; i++) {
writel(lli_src[i+1].lcsp02, &lcla_src[i].lcsp02);
writel(lli_src[i+1].lcsp13, &lcla_src[i].lcsp13);
writel(lli_dst[i+1].lcsp02, &lcla_dst[i].lcsp02);
writel(lli_dst[i+1].lcsp13, &lcla_dst[i].lcsp13);
writel(lli_src[i + 1].lcsp02, &lcla_src[i].lcsp02);
writel(lli_src[i + 1].lcsp13, &lcla_src[i].lcsp13);
writel(lli_dst[i + 1].lcsp02, &lcla_dst[i].lcsp02);
writel(lli_dst[i + 1].lcsp13, &lcla_dst[i].lcsp13);
slos = lli_src[i+1].lcsp13 & D40_MEM_LCSP1_SLOS_MASK;
dlos = lli_dst[i+1].lcsp13 & D40_MEM_LCSP3_DLOS_MASK;
slos = lli_src[i + 1].lcsp13 & D40_MEM_LCSP1_SLOS_MASK;
dlos = lli_dst[i + 1].lcsp13 & D40_MEM_LCSP3_DLOS_MASK;
}
}