diff options
| author | Lee Jones <lee.jones@linaro.org> | 2013-05-15 10:51:30 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2013-05-23 21:13:28 +0200 |
| commit | ef9c89b3ec6916dd0b7db1563d51d85af3e7f031 (patch) | |
| tree | a097bcac1b646facb58e317024f2ba3b903e7429 /drivers/dma/ste_dma40.c | |
| parent | b722487507b757b03e4e9cbb215f8965fa9b5e47 (diff) | |
| download | talos-obmc-linux-ef9c89b3ec6916dd0b7db1563d51d85af3e7f031.tar.gz talos-obmc-linux-ef9c89b3ec6916dd0b7db1563d51d85af3e7f031.zip | |
dmaengine: ste_dma40: Only use addresses passed as configuration information
Addresses are passed in from the client's driver via the invocation of
dmaengine_slave_config(), so there's no need to fetch them from platform
data too, hardwired or otherwise. This is a great step forward, as it
elevates a large burden from platform data in the way of a look-up
table.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/dma/ste_dma40.c')
| -rw-r--r-- | drivers/dma/ste_dma40.c | 51 |
1 files changed, 11 insertions, 40 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index ba84df8fc9d8..57a127e5c896 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -1774,22 +1774,6 @@ static int d40_validate_conf(struct d40_chan *d40c, res = -EINVAL; } - if (conf->dir == STEDMA40_MEM_TO_PERIPH && - d40c->base->plat_data->dev_tx[conf->dev_type] == 0 && - d40c->runtime_addr == 0) { - chan_err(d40c, "Invalid TX channel address (%d)\n", - conf->dev_type); - res = -EINVAL; - } - - if (conf->dir == STEDMA40_PERIPH_TO_MEM && - d40c->base->plat_data->dev_rx[conf->dev_type] == 0 && - d40c->runtime_addr == 0) { - chan_err(d40c, "Invalid RX channel address (%d)\n", - conf->dev_type); - res = -EINVAL; - } - if (conf->dir == STEDMA40_PERIPH_TO_PERIPH) { /* * DMAC HW supports it. Will be added to this driver, @@ -2327,14 +2311,10 @@ d40_prep_sg(struct dma_chan *dchan, struct scatterlist *sg_src, if (sg_next(&sg_src[sg_len - 1]) == sg_src) desc->cyclic = true; - if (direction != DMA_TRANS_NONE) { - dma_addr_t dev_addr = d40_get_dev_addr(chan, direction); - - if (direction == DMA_DEV_TO_MEM) - src_dev_addr = dev_addr; - else if (direction == DMA_MEM_TO_DEV) - dst_dev_addr = dev_addr; - } + if (direction == DMA_DEV_TO_MEM) + src_dev_addr = chan->runtime_addr; + else if (direction == DMA_MEM_TO_DEV) + dst_dev_addr = chan->runtime_addr; if (chan_is_logical(chan)) ret = d40_prep_sg_log(chan, desc, sg_src, sg_dst, @@ -2782,15 +2762,8 @@ static int d40_set_runtime_config(struct dma_chan *chan, dst_maxburst = config->dst_maxburst; if (config->direction == DMA_DEV_TO_MEM) { - dma_addr_t dev_addr_rx = - d40c->base->plat_data->dev_rx[cfg->dev_type]; - config_addr = config->src_addr; - if (dev_addr_rx) - dev_dbg(d40c->base->dev, - "channel has a pre-wired RX address %08x " - "overriding with %08x\n", - dev_addr_rx, config_addr); + if (cfg->dir != STEDMA40_PERIPH_TO_MEM) dev_dbg(d40c->base->dev, "channel was not configured for peripheral " @@ -2805,15 +2778,8 @@ static int d40_set_runtime_config(struct dma_chan *chan, dst_maxburst = src_maxburst; } else if (config->direction == DMA_MEM_TO_DEV) { - dma_addr_t dev_addr_tx = - d40c->base->plat_data->dev_tx[cfg->dev_type]; - config_addr = config->dst_addr; - if (dev_addr_tx) - dev_dbg(d40c->base->dev, - "channel has a pre-wired TX address %08x " - "overriding with %08x\n", - dev_addr_tx, config_addr); + if (cfg->dir != STEDMA40_MEM_TO_PERIPH) dev_dbg(d40c->base->dev, "channel was not configured for memory " @@ -2833,6 +2799,11 @@ static int d40_set_runtime_config(struct dma_chan *chan, return -EINVAL; } + if (config_addr <= 0) { + dev_err(d40c->base->dev, "no address supplied\n"); + return -EINVAL; + } + if (src_maxburst * src_addr_width != dst_maxburst * dst_addr_width) { dev_err(d40c->base->dev, "src/dst width/maxburst mismatch: %d*%d != %d*%d\n", |
