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dma40: unify d40_log_sg_to_lli funcs for mem and slave 

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 11:18:26 +01:00 committed by Dan Williams
parent e24b36bdf8
commit 5ed04b8575
3 changed files with 29 additions and 85 deletions
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41
drivers/dma/ste_dma40.c
View File

@ -1638,37 +1638,28 @@ d40_prep_sg_log(struct d40_chan *chan, struct d40_desc *desc,
unsigned int sg_len, enum dma_data_direction direction,
dma_addr_t dev_addr)
{
dma_addr_t src_dev_addr = direction == DMA_FROM_DEVICE ? dev_addr : 0;
dma_addr_t dst_dev_addr = direction == DMA_TO_DEVICE ? dev_addr : 0;
struct stedma40_chan_cfg *cfg = &chan->dma_cfg;
struct stedma40_half_channel_info *src_info = &cfg->src_info;
struct stedma40_half_channel_info *dst_info = &cfg->dst_info;
int ret;
if (direction == DMA_NONE) {
/* memcpy */
(void) d40_log_sg_to_lli(sg_src, sg_len,
desc->lli_log.src,
chan->log_def.lcsp1,
src_info->data_width,
dst_info->data_width);
ret = d40_log_sg_to_lli(sg_src, sg_len,
src_dev_addr,
desc->lli_log.src,
chan->log_def.lcsp1,
src_info->data_width,
dst_info->data_width);
(void) d40_log_sg_to_lli(sg_dst, sg_len,
desc->lli_log.dst,
chan->log_def.lcsp3,
dst_info->data_width,
src_info->data_width);
} else {
unsigned int total_size;
ret = d40_log_sg_to_lli(sg_dst, sg_len,
dst_dev_addr,
desc->lli_log.dst,
chan->log_def.lcsp3,
dst_info->data_width,
src_info->data_width);
total_size = d40_log_sg_to_dev(sg_src, sg_len,
&desc->lli_log,
&chan->log_def,
src_info->data_width,
dst_info->data_width,
direction, dev_addr);
if (total_size < 0)
return -EINVAL;
}
return 0;
return ret < 0 ? ret : 0;
}
static int

63
drivers/dma/ste_dma40_ll.c
View File

@ -369,53 +369,6 @@ static void d40_log_fill_lli(struct d40_log_lli *lli,
}
int d40_log_sg_to_dev(struct scatterlist *sg,
int sg_len,
struct d40_log_lli_bidir *lli,
struct d40_def_lcsp *lcsp,
u32 src_data_width,
u32 dst_data_width,
enum dma_data_direction direction,
dma_addr_t dev_addr)
{
int total_size = 0;
struct scatterlist *current_sg = sg;
int i;
struct d40_log_lli *lli_src = lli->src;
struct d40_log_lli *lli_dst = lli->dst;
for_each_sg(sg, current_sg, sg_len, i) {
dma_addr_t sg_addr = sg_dma_address(current_sg);
unsigned int len = sg_dma_len(current_sg);
dma_addr_t src;
dma_addr_t dst;
total_size += len;
if (direction == DMA_TO_DEVICE) {
src = sg_addr;
dst = dev_addr;
} else {
src = dev_addr;
dst = sg_addr;
}
lli_src = d40_log_buf_to_lli(lli_src, src, len,
lcsp->lcsp1,
src_data_width,
dst_data_width,
src == sg_addr);
lli_dst = d40_log_buf_to_lli(lli_dst, dst, len,
lcsp->lcsp3,
dst_data_width,
src_data_width,
dst == sg_addr);
}
return total_size;
}
struct d40_log_lli *d40_log_buf_to_lli(struct d40_log_lli *lli_sg,
dma_addr_t addr,
int size,
@ -447,6 +400,7 @@ struct d40_log_lli *d40_log_buf_to_lli(struct d40_log_lli *lli_sg,
int d40_log_sg_to_lli(struct scatterlist *sg,
int sg_len,
dma_addr_t dev_addr,
struct d40_log_lli *lli_sg,
u32 lcsp13, /* src or dst*/
u32 data_width1, u32 data_width2)
@ -455,14 +409,21 @@ int d40_log_sg_to_lli(struct scatterlist *sg,
struct scatterlist *current_sg = sg;
int i;
struct d40_log_lli *lli = lli_sg;
bool autoinc = !dev_addr;
for_each_sg(sg, current_sg, sg_len, i) {
dma_addr_t sg_addr = sg_dma_address(current_sg);
unsigned int len = sg_dma_len(current_sg);
dma_addr_t addr = dev_addr ?: sg_addr;
total_size += sg_dma_len(current_sg);
lli = d40_log_buf_to_lli(lli,
sg_dma_address(current_sg),
sg_dma_len(current_sg),
lli = d40_log_buf_to_lli(lli, addr, len,
lcsp13,
data_width1, data_width2, true);
data_width1,
data_width2,
autoinc);
}
return total_size;
}

10
drivers/dma/ste_dma40_ll.h
View File

@ -321,17 +321,9 @@ struct d40_log_lli *d40_log_buf_to_lli(struct d40_log_lli *lli_sg,
u32 data_width1, u32 data_width2,
bool addr_inc);
int d40_log_sg_to_dev(struct scatterlist *sg,
int sg_len,
struct d40_log_lli_bidir *lli,
struct d40_def_lcsp *lcsp,
u32 src_data_width,
u32 dst_data_width,
enum dma_data_direction direction,
dma_addr_t dev_addr);
int d40_log_sg_to_lli(struct scatterlist *sg,
int sg_len,
dma_addr_t dev_addr,
struct d40_log_lli *lli_sg,
u32 lcsp13, /* src or dst*/
u32 data_width1, u32 data_width2);