diff options
author | Rabin Vincent <rabin.vincent@stericsson.com> | 2011-01-25 10:18:20 (GMT) |
---|---|---|
committer | Dan Williams <dan.j.williams@intel.com> | 2011-01-31 06:27:18 (GMT) |
commit | 00ac0341486ffe212f45ff1fe0780d12a36fffde (patch) | |
tree | 5fd79c471c46e2496e1998a20f9d87649171d5e6 | |
parent | dbd887880320b6a56811bb38ff4ad888728c3a91 (diff) | |
download | linux-00ac0341486ffe212f45ff1fe0780d12a36fffde.tar.xz |
dma40: remove duplicated dev addr code
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>
-rw-r--r-- | drivers/dma/ste_dma40.c | 66 |
1 files changed, 30 insertions, 36 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 495f9eb..65b5aad 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -1909,25 +1909,10 @@ 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 dma_flags) + dma_addr_t dev_addr) { - dma_addr_t dev_addr = 0; int total_size; - if (direction == DMA_FROM_DEVICE) - if (d40c->runtime_addr) - dev_addr = d40c->runtime_addr; - else - dev_addr = d40c->base->plat_data->dev_rx[d40c->dma_cfg.src_dev_type]; - else if (direction == DMA_TO_DEVICE) - if (d40c->runtime_addr) - dev_addr = d40c->runtime_addr; - else - dev_addr = d40c->base->plat_data->dev_tx[d40c->dma_cfg.dst_dev_type]; - - else - return -EINVAL; - total_size = d40_log_sg_to_dev(sgl, sg_len, &d40d->lli_log, &d40c->log_def, @@ -1947,27 +1932,12 @@ 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 dma_flags) + dma_addr_t dev_addr) { - dma_addr_t src_dev_addr; - dma_addr_t dst_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; int res; - if (direction == DMA_FROM_DEVICE) { - dst_dev_addr = 0; - if (d40c->runtime_addr) - src_dev_addr = d40c->runtime_addr; - else - src_dev_addr = d40c->base->plat_data->dev_rx[d40c->dma_cfg.src_dev_type]; - } else if (direction == DMA_TO_DEVICE) { - if (d40c->runtime_addr) - dst_dev_addr = d40c->runtime_addr; - else - dst_dev_addr = d40c->base->plat_data->dev_tx[d40c->dma_cfg.dst_dev_type]; - src_dev_addr = 0; - } else - return -EINVAL; - res = d40_phy_sg_to_lli(sgl, sgl_len, src_dev_addr, @@ -1997,6 +1967,24 @@ static int d40_prep_slave_sg_phy(struct d40_desc *d40d, return 0; } +static dma_addr_t +d40_get_dev_addr(struct d40_chan *chan, enum dma_data_direction direction) +{ + struct stedma40_platform_data *plat = chan->base->plat_data; + struct stedma40_chan_cfg *cfg = &chan->dma_cfg; + dma_addr_t addr; + + if (chan->runtime_addr) + return chan->runtime_addr; + + if (direction == DMA_FROM_DEVICE) + addr = plat->dev_rx[cfg->src_dev_type]; + else if (direction == DMA_TO_DEVICE) + addr = plat->dev_tx[cfg->dst_dev_type]; + + return addr; +} + static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, @@ -2006,6 +1994,7 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan, struct d40_desc *d40d; struct d40_chan *d40c = container_of(chan, struct d40_chan, chan); + dma_addr_t dev_addr; unsigned long flags; int err; @@ -2014,18 +2003,23 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan, return ERR_PTR(-EINVAL); } + if (direction != DMA_FROM_DEVICE && direction != DMA_TO_DEVICE) + return NULL; + spin_lock_irqsave(&d40c->lock, flags); d40d = d40_prep_desc(d40c, sgl, sg_len, dma_flags); if (d40d == NULL) goto err; + dev_addr = d40_get_dev_addr(d40c, direction); + if (chan_is_logical(d40c)) err = d40_prep_slave_sg_log(d40d, d40c, sgl, sg_len, - direction, dma_flags); + direction, dev_addr); else err = d40_prep_slave_sg_phy(d40d, d40c, sgl, sg_len, - direction, dma_flags); + direction, dev_addr); if (err) { chan_err(d40c, "Failed to prepare %s slave sg job: %d\n", chan_is_logical(d40c) ? "log" : "phy", err); |