diff options
Diffstat (limited to 'drivers/dma/imx-sdma.c')
| -rw-r--r-- | drivers/dma/imx-sdma.c | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index f993955..8bc5acf 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -247,7 +247,7 @@ struct sdma_engine; struct sdma_channel { struct sdma_engine *sdma; unsigned int channel; - enum dma_data_direction direction; + enum dma_transfer_direction direction; enum sdma_peripheral_type peripheral_type; unsigned int event_id0; unsigned int event_id1; @@ -268,6 +268,8 @@ struct sdma_channel { struct dma_async_tx_descriptor desc; dma_cookie_t last_completed; enum dma_status status; + unsigned int chn_count; + unsigned int chn_real_count; }; #define IMX_DMA_SG_LOOP (1 << 0) @@ -503,6 +505,7 @@ static void mxc_sdma_handle_channel_normal(struct sdma_channel *sdmac) struct sdma_buffer_descriptor *bd; int i, error = 0; + sdmac->chn_real_count = 0; /* * non loop mode. Iterate over all descriptors, collect * errors and call callback function @@ -512,6 +515,7 @@ static void mxc_sdma_handle_channel_normal(struct sdma_channel *sdmac) if (bd->mode.status & (BD_DONE | BD_RROR)) error = -EIO; + sdmac->chn_real_count += bd->mode.count; } if (error) @@ -519,9 +523,9 @@ static void mxc_sdma_handle_channel_normal(struct sdma_channel *sdmac) else sdmac->status = DMA_SUCCESS; + sdmac->last_completed = sdmac->desc.cookie; if (sdmac->desc.callback) sdmac->desc.callback(sdmac->desc.callback_param); - sdmac->last_completed = sdmac->desc.cookie; } static void mxc_sdma_handle_channel(struct sdma_channel *sdmac) @@ -650,7 +654,7 @@ static int sdma_load_context(struct sdma_channel *sdmac) struct sdma_buffer_descriptor *bd0 = sdma->channel[0].bd; int ret; - if (sdmac->direction == DMA_FROM_DEVICE) { + if (sdmac->direction == DMA_DEV_TO_MEM) { load_address = sdmac->pc_from_device; } else { load_address = sdmac->pc_to_device; @@ -832,17 +836,18 @@ static struct sdma_channel *to_sdma_chan(struct dma_chan *chan) static dma_cookie_t sdma_tx_submit(struct dma_async_tx_descriptor *tx) { + unsigned long flags; struct sdma_channel *sdmac = to_sdma_chan(tx->chan); struct sdma_engine *sdma = sdmac->sdma; dma_cookie_t cookie; - spin_lock_irq(&sdmac->lock); + spin_lock_irqsave(&sdmac->lock, flags); cookie = sdma_assign_cookie(sdmac); sdma_enable_channel(sdma, sdmac->channel); - spin_unlock_irq(&sdmac->lock); + spin_unlock_irqrestore(&sdmac->lock, flags); return cookie; } @@ -911,7 +916,7 @@ static void sdma_free_chan_resources(struct dma_chan *chan) static struct dma_async_tx_descriptor *sdma_prep_slave_sg( struct dma_chan *chan, struct scatterlist *sgl, - unsigned int sg_len, enum dma_data_direction direction, + unsigned int sg_len, enum dma_transfer_direction direction, unsigned long flags) { struct sdma_channel *sdmac = to_sdma_chan(chan); @@ -941,6 +946,7 @@ static struct dma_async_tx_descriptor *sdma_prep_slave_sg( goto err_out; } + sdmac->chn_count = 0; for_each_sg(sgl, sg, sg_len, i) { struct sdma_buffer_descriptor *bd = &sdmac->bd[i]; int param; @@ -957,6 +963,7 @@ static struct dma_async_tx_descriptor *sdma_prep_slave_sg( } bd->mode.count = count; + sdmac->chn_count += count; if (sdmac->word_size > DMA_SLAVE_BUSWIDTH_4_BYTES) { ret = -EINVAL; @@ -1008,7 +1015,7 @@ err_out: static struct dma_async_tx_descriptor *sdma_prep_dma_cyclic( struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len, - size_t period_len, enum dma_data_direction direction) + size_t period_len, enum dma_transfer_direction direction) { struct sdma_channel *sdmac = to_sdma_chan(chan); struct sdma_engine *sdma = sdmac->sdma; @@ -1093,15 +1100,18 @@ static int sdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, sdma_disable_channel(sdmac); return 0; case DMA_SLAVE_CONFIG: - if (dmaengine_cfg->direction == DMA_FROM_DEVICE) { + if (dmaengine_cfg->direction == DMA_DEV_TO_MEM) { sdmac->per_address = dmaengine_cfg->src_addr; - sdmac->watermark_level = dmaengine_cfg->src_maxburst; + sdmac->watermark_level = dmaengine_cfg->src_maxburst * + dmaengine_cfg->src_addr_width; sdmac->word_size = dmaengine_cfg->src_addr_width; } else { sdmac->per_address = dmaengine_cfg->dst_addr; - sdmac->watermark_level = dmaengine_cfg->dst_maxburst; + sdmac->watermark_level = dmaengine_cfg->dst_maxburst * + dmaengine_cfg->dst_addr_width; sdmac->word_size = dmaengine_cfg->dst_addr_width; } + sdmac->direction = dmaengine_cfg->direction; return sdma_config_channel(sdmac); default: return -ENOSYS; @@ -1119,7 +1129,8 @@ static enum dma_status sdma_tx_status(struct dma_chan *chan, last_used = chan->cookie; - dma_set_tx_state(txstate, sdmac->last_completed, last_used, 0); + dma_set_tx_state(txstate, sdmac->last_completed, last_used, + sdmac->chn_count - sdmac->chn_real_count); return sdmac->status; } |