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authorSandeep Paulraj <s-paulraj@ti.com>2009-07-27 15:10:36 -0400
committerKevin Hilman <khilman@deeprootsystems.com>2009-08-26 11:55:59 +0300
commit213765d7b40a455ced8596edfa3cc51b5f69d515 (patch)
tree08f5ecd864b8c50263e2c35578165f0d895122c1 /arch/arm/mach-davinci/include/mach/edma.h
parent0c30e0d31b57375b1decad4cc0e139e2f7758986 (diff)
DaVinci: EDMA: Adding 2 new APIs for allocating/freeing PARAMs
For best performance, codecs often setup linked triggered transfers with a contiguous block of params, and that is when this API is used. Setup/configuration of these parameter RAMs is most efficient if they are contiguous. There is an API to allocate a set of contiguous parameter RAMs and a corresponding API to free a set of contiguous parameter RAMs Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-davinci/include/mach/edma.h')
-rw-r--r--arch/arm/mach-davinci/include/mach/edma.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/include/mach/edma.h b/arch/arm/mach-davinci/include/mach/edma.h
index 3c7dc2db70e..eb8bfd7925e 100644
--- a/arch/arm/mach-davinci/include/mach/edma.h
+++ b/arch/arm/mach-davinci/include/mach/edma.h
@@ -226,6 +226,9 @@ enum sync_dimension {
#define EDMA_CHANNEL_ANY -1 /* for edma_alloc_channel() */
#define EDMA_SLOT_ANY -1 /* for edma_alloc_slot() */
+#define EDMA_CONT_PARAMS_ANY 1001
+#define EDMA_CONT_PARAMS_FIXED_EXACT 1002
+#define EDMA_CONT_PARAMS_FIXED_NOT_EXACT 1003
/* alloc/free DMA channels and their dedicated parameter RAM slots */
int edma_alloc_channel(int channel,
@@ -237,6 +240,10 @@ void edma_free_channel(unsigned channel);
int edma_alloc_slot(unsigned ctlr, int slot);
void edma_free_slot(unsigned slot);
+/* alloc/free a set of contiguous parameter RAM slots */
+int edma_alloc_cont_slots(unsigned ctlr, unsigned int id, int slot, int count);
+int edma_free_cont_slots(unsigned slot, int count);
+
/* calls that operate on part of a parameter RAM slot */
void edma_set_src(unsigned slot, dma_addr_t src_port,
enum address_mode mode, enum fifo_width);