summaryrefslogtreecommitdiff
path: root/include/linux/sh_dma.h
diff options
context:
space:
mode:
authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2012-07-05 14:29:42 +0400
committerVinod Koul <vinod.koul@linux.intel.com>2012-07-20 09:58:20 +0400
commit1ff8df4f5388ad66bd7d0199b5839a2e3345c055 (patch)
treec6d80a09a4722c8c39cea58b80a771e34594b74b /include/linux/sh_dma.h
parentc2cdb7e4d16394fc51dc5c2c5b3e7c3733bdfaac (diff)
downloadlinux-1ff8df4f5388ad66bd7d0199b5839a2e3345c055.tar.xz
dma: sh: provide a migration path for slave drivers to stop using .private
This patch extends the sh dmaengine driver to support the preferred channel selection and configuration method, instead of using the "private" field from struct dma_chan. We add a standard filter function to be used by slave drivers instead of implementing their own ones, and add support for the DMA_SLAVE_CONFIG control operation, which must accompany the new channel selection method. We still support the legacy .private channel allocation method to cater for a smooth driver migration. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> [applied a trvial checkpath fix] Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Diffstat (limited to 'include/linux/sh_dma.h')
-rw-r--r--include/linux/sh_dma.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/sh_dma.h b/include/linux/sh_dma.h
index 4e83f3e034f3..b64d6bec6f90 100644
--- a/include/linux/sh_dma.h
+++ b/include/linux/sh_dma.h
@@ -99,4 +99,6 @@ struct sh_dmae_pdata {
#define CHCR_TE 0x00000002
#define CHCR_IE 0x00000004
+bool shdma_chan_filter(struct dma_chan *chan, void *arg);
+
#endif