diff options
| author | Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> | 2016-06-04 23:47:17 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-06-28 10:50:09 (GMT) |
| commit | 34e2acc8df13919d5a1aef450c6905b6329fa5b9 (patch) | |
| tree | eedcdb834b1e066ea6b4677c2a6607e20880b56b /drivers/media/pci/tw686x/tw686x-core.c | |
| parent | 11a1697404ac8e58dd1483a280a2e799a71c3510 (diff) | |
| download | linux-34e2acc8df13919d5a1aef450c6905b6329fa5b9.tar.xz | |
[media] tw686x: Add support for DMA scatter-gather mode
Now that the driver has the infrastructure to support more
DMA modes, let's add the DMA scatter-gather mode.
In this mode, the device delivers sequential top-bottom
frames. The scatter-gather logic is based on staging's
tw686x-kh driver (by Krzysztof Ha?asa).
Tested-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/pci/tw686x/tw686x-core.c')
| -rw-r--r-- | drivers/media/pci/tw686x/tw686x-core.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/pci/tw686x/tw686x-core.c b/drivers/media/pci/tw686x/tw686x-core.c index 9a7646c..586bc67 100644 --- a/drivers/media/pci/tw686x/tw686x-core.c +++ b/drivers/media/pci/tw686x/tw686x-core.c @@ -65,6 +65,8 @@ static const char *dma_mode_name(unsigned int mode) return "memcpy"; case TW686X_DMA_MODE_CONTIG: return "contig"; + case TW686X_DMA_MODE_SG: + return "sg"; default: return "unknown"; } @@ -81,6 +83,8 @@ static int tw686x_dma_mode_set(const char *val, struct kernel_param *kp) dma_mode = TW686X_DMA_MODE_MEMCPY; else if (!strcasecmp(val, dma_mode_name(TW686X_DMA_MODE_CONTIG))) dma_mode = TW686X_DMA_MODE_CONTIG; + else if (!strcasecmp(val, dma_mode_name(TW686X_DMA_MODE_SG))) + dma_mode = TW686X_DMA_MODE_SG; else return -EINVAL; return 0; |