diff options
| author | Shawn Lin <shawn.lin@rock-chips.com> | 2016-01-22 11:06:50 (GMT) |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2016-02-09 03:31:41 (GMT) |
| commit | 6d5bbed30f89acd2ae0d23b3fff5b13b307525d9 (patch) | |
| tree | e0d30a6632f33fbee36b7776778bd4442f80a965 | |
| parent | 271e1b86e69140fe65718ae8a264284c46d3129d (diff) | |
| download | linux-6d5bbed30f89acd2ae0d23b3fff5b13b307525d9.tar.xz | |
dmaengine: core: expose max burst capability to clients
This patch add max_burst to dma_get_slave_caps for clients
to get the burst capability of slave dma controller.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| -rw-r--r-- | drivers/dma/dmaengine.c | 1 | ||||
| -rw-r--r-- | include/linux/dmaengine.h | 4 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index c50a247..0cb259c 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -496,6 +496,7 @@ int dma_get_slave_caps(struct dma_chan *chan, struct dma_slave_caps *caps) caps->src_addr_widths = device->src_addr_widths; caps->dst_addr_widths = device->dst_addr_widths; caps->directions = device->directions; + caps->max_burst = device->max_burst; caps->residue_granularity = device->residue_granularity; caps->descriptor_reuse = device->descriptor_reuse; diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 16a1cad..0a9a0ba 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -401,6 +401,7 @@ enum dma_residue_granularity { * since the enum dma_transfer_direction is not defined as bits for each * type of direction, the dma controller should fill (1 << <TYPE>) and same * should be checked by controller as well + * @max_burst: max burst capability per-transfer * @cmd_pause: true, if pause and thereby resume is supported * @cmd_terminate: true, if terminate cmd is supported * @residue_granularity: granularity of the reported transfer residue @@ -411,6 +412,7 @@ struct dma_slave_caps { u32 src_addr_widths; u32 dst_addr_widths; u32 directions; + u32 max_burst; bool cmd_pause; bool cmd_terminate; enum dma_residue_granularity residue_granularity; @@ -654,6 +656,7 @@ struct dma_filter { * the enum dma_transfer_direction is not defined as bits for * each type of direction, the dma controller should fill (1 << * <TYPE>) and same should be checked by controller as well + * @max_burst: max burst capability per-transfer * @residue_granularity: granularity of the transfer residue reported * by tx_status * @device_alloc_chan_resources: allocate resources and return the @@ -712,6 +715,7 @@ struct dma_device { u32 src_addr_widths; u32 dst_addr_widths; u32 directions; + u32 max_burst; bool descriptor_reuse; enum dma_residue_granularity residue_granularity; |