openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

dmaengine: fsl-edma: remove dma_slave_config direction usage 

dma_slave_config direction was marked as deprecated quite some
time back, remove the usage from this driver so that the field
can be removed

Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
Tested-by: Angelo Dureghello <angelo@sysam.it>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Vinod Koul 2018-10-07 19:42:56 +05:30
parent 5b7d0c9474
commit 0e819e3564
2 changed files with 46 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

74
drivers/dma/fsl-edma-common.c
View File

@ -178,19 +178,7 @@ int fsl_edma_slave_config(struct dma_chan *chan,
{
struct fsl_edma_chan *fsl_chan = to_fsl_edma_chan(chan);
fsl_chan->fsc.dir = cfg->direction;
if (cfg->direction == DMA_DEV_TO_MEM) {
fsl_chan->fsc.dev_addr = cfg->src_addr;
fsl_chan->fsc.addr_width = cfg->src_addr_width;
fsl_chan->fsc.burst = cfg->src_maxburst;
fsl_chan->fsc.attr = fsl_edma_get_tcd_attr(cfg->src_addr_width);
} else if (cfg->direction == DMA_MEM_TO_DEV) {
fsl_chan->fsc.dev_addr = cfg->dst_addr;
fsl_chan->fsc.addr_width = cfg->dst_addr_width;
fsl_chan->fsc.burst = cfg->dst_maxburst;
fsl_chan->fsc.attr = fsl_edma_get_tcd_attr(cfg->dst_addr_width);
} else
return -EINVAL;
memcpy(&fsl_chan->cfg, cfg, sizeof(*cfg));
return 0;
}
@ -202,7 +190,7 @@ static size_t fsl_edma_desc_residue(struct fsl_edma_chan *fsl_chan,
struct fsl_edma_desc *edesc = fsl_chan->edesc;
struct edma_regs *regs = &fsl_chan->edma->regs;
u32 ch = fsl_chan->vchan.chan.chan_id;
enum dma_transfer_direction dir = fsl_chan->fsc.dir;
enum dma_transfer_direction dir = edesc->dirn;
dma_addr_t cur_addr, dma_addr;
size_t len, size;
int i;
@ -387,7 +375,7 @@ struct dma_async_tx_descriptor *fsl_edma_prep_dma_cyclic(
u32 src_addr, dst_addr, last_sg, nbytes;
u16 soff, doff, iter;
if (!is_slave_direction(fsl_chan->fsc.dir))
if (!is_slave_direction(direction))
return NULL;
sg_len = buf_len / period_len;
@ -395,9 +383,21 @@ struct dma_async_tx_descriptor *fsl_edma_prep_dma_cyclic(
if (!fsl_desc)
return NULL;
fsl_desc->iscyclic = true;
fsl_desc->dirn = direction;
dma_buf_next = dma_addr;
nbytes = fsl_chan->fsc.addr_width * fsl_chan->fsc.burst;
if (direction == DMA_MEM_TO_DEV) {
fsl_chan->attr =
fsl_edma_get_tcd_attr(fsl_chan->cfg.dst_addr_width);
nbytes = fsl_chan->cfg.dst_addr_width *
fsl_chan->cfg.dst_maxburst;
} else {
fsl_chan->attr =
fsl_edma_get_tcd_attr(fsl_chan->cfg.src_addr_width);
nbytes = fsl_chan->cfg.src_addr_width *
fsl_chan->cfg.src_maxburst;
}
iter = period_len / nbytes;
for (i = 0; i < sg_len; i++) {
@ -407,20 +407,20 @@ struct dma_async_tx_descriptor *fsl_edma_prep_dma_cyclic(
/* get next sg's physical address */
last_sg = fsl_desc->tcd[(i + 1) % sg_len].ptcd;
if (fsl_chan->fsc.dir == DMA_MEM_TO_DEV) {
if (direction == DMA_MEM_TO_DEV) {
src_addr = dma_buf_next;
dst_addr = fsl_chan->fsc.dev_addr;
soff = fsl_chan->fsc.addr_width;
dst_addr = fsl_chan->cfg.dst_addr;
soff = fsl_chan->cfg.dst_addr_width;
doff = 0;
} else {
src_addr = fsl_chan->fsc.dev_addr;
src_addr = fsl_chan->cfg.src_addr;
dst_addr = dma_buf_next;
soff = 0;
doff = fsl_chan->fsc.addr_width;
doff = fsl_chan->cfg.src_addr_width;
}
fsl_edma_fill_tcd(fsl_desc->tcd[i].vtcd, src_addr, dst_addr,
fsl_chan->fsc.attr, soff, nbytes, 0, iter,
fsl_chan->attr, soff, nbytes, 0, iter,
iter, doff, last_sg, true, false, true);
dma_buf_next += period_len;
}
@ -441,42 +441,54 @@ struct dma_async_tx_descriptor *fsl_edma_prep_slave_sg(
u16 soff, doff, iter;
int i;
if (!is_slave_direction(fsl_chan->fsc.dir))
if (!is_slave_direction(direction))
return NULL;
fsl_desc = fsl_edma_alloc_desc(fsl_chan, sg_len);
if (!fsl_desc)
return NULL;
fsl_desc->iscyclic = false;
fsl_desc->dirn = direction;
if (direction == DMA_MEM_TO_DEV) {
fsl_chan->attr =
fsl_edma_get_tcd_attr(fsl_chan->cfg.dst_addr_width);
nbytes = fsl_chan->cfg.dst_addr_width *
fsl_chan->cfg.dst_maxburst;
} else {
fsl_chan->attr =
fsl_edma_get_tcd_attr(fsl_chan->cfg.src_addr_width);
nbytes = fsl_chan->cfg.src_addr_width *
fsl_chan->cfg.src_maxburst;
}
nbytes = fsl_chan->fsc.addr_width * fsl_chan->fsc.burst;
for_each_sg(sgl, sg, sg_len, i) {
/* get next sg's physical address */
last_sg = fsl_desc->tcd[(i + 1) % sg_len].ptcd;
if (fsl_chan->fsc.dir == DMA_MEM_TO_DEV) {
if (direction == DMA_MEM_TO_DEV) {
src_addr = sg_dma_address(sg);
dst_addr = fsl_chan->fsc.dev_addr;
soff = fsl_chan->fsc.addr_width;
dst_addr = fsl_chan->cfg.dst_addr;
soff = fsl_chan->cfg.dst_addr_width;
doff = 0;
} else {
src_addr = fsl_chan->fsc.dev_addr;
src_addr = fsl_chan->cfg.src_addr;
dst_addr = sg_dma_address(sg);
soff = 0;
doff = fsl_chan->fsc.addr_width;
doff = fsl_chan->cfg.src_addr_width;
}
iter = sg_dma_len(sg) / nbytes;
if (i < sg_len - 1) {
last_sg = fsl_desc->tcd[(i + 1)].ptcd;
fsl_edma_fill_tcd(fsl_desc->tcd[i].vtcd, src_addr,
dst_addr, fsl_chan->fsc.attr, soff,
dst_addr, fsl_chan->attr, soff,
nbytes, 0, iter, iter, doff, last_sg,
false, false, true);
} else {
last_sg = 0;
fsl_edma_fill_tcd(fsl_desc->tcd[i].vtcd, src_addr,
dst_addr, fsl_chan->fsc.attr, soff,
dst_addr, fsl_chan->attr, soff,
nbytes, 0, iter, iter, doff, last_sg,
true, true, false);
}

12
drivers/dma/fsl-edma-common.h
View File

@ -109,14 +109,6 @@ struct fsl_edma_sw_tcd {
struct fsl_edma_hw_tcd *vtcd;
};
struct fsl_edma_slave_config {
enum dma_transfer_direction dir;
enum dma_slave_buswidth addr_width;
u32 dev_addr;
u32 burst;
u32 attr;
};
struct fsl_edma_chan {
struct virt_dma_chan vchan;
enum dma_status status;
@ -125,7 +117,8 @@ struct fsl_edma_chan {
u32 slave_id;
struct fsl_edma_engine *edma;
struct fsl_edma_desc *edesc;
struct fsl_edma_slave_config fsc;
struct dma_slave_config cfg;
u32 attr;
struct dma_pool *tcd_pool;
};
@ -133,6 +126,7 @@ struct fsl_edma_desc {
struct virt_dma_desc vdesc;
struct fsl_edma_chan *echan;
bool iscyclic;
enum dma_transfer_direction dirn;
unsigned int n_tcds;
struct fsl_edma_sw_tcd tcd[];
};