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authorSudhakar Rajashekhara <sudhakar.raj@ti.com>2009-05-21 07:41:35 -0400
committerKevin Hilman <khilman@deeprootsystems.com>2009-08-26 10:56:56 +0300
commit60902a2cb12c3c1682ee7a04ad7448ec16dc0c29 (patch)
treeba754bff7fadd7106dc9f8549136a514177d0fd1 /arch/arm/mach-davinci/devices.c
parent4c5adde7943b982d22a7bf711654fbb5cb810667 (diff)
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davinci: EDMA: multiple CCs, channel mapping and API changes
- restructure to support multiple channel controllers by using additional struct resources for each CC - interface changes visible to EDMA clients Introduce macros to build IDs from controller and channel number, and to extract them. Modify the edma_alloc_slot function to take an extra argument for the controller. Also update ASoC drivers to use API. ASoC changes Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> - Move queue related mappings to dm<soc>.c EDMA in DM355 and DM644x has two transfer controllers while DM646x has four transfer controllers. Moving the queue to tc mapping and queue priority mapping to dm<soc>.c will be helpful to probe these mappings from platform device so that the machine_is_* testing will be avoided. - add channel mapping logic Channel mapping logic is introduced in dm646x EDMA. This implies that there is no fixed association for a channel number to a parameter entry number. In other words, using the DMA channel mapping registers (DCHMAPn), a PaRAM entry can be mapped to any channel. While in the case of dm644x and dm355 there is a fixed mapping between the EDMA channel and Param entry number. Signed-off-by: Naresh Medisetty <naresh@ti.com> Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com> Reviewed-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-davinci/devices.c')
-rw-r--r--arch/arm/mach-davinci/devices.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c
index de16f347566..7a2f8ae89be 100644
--- a/arch/arm/mach-davinci/devices.c
+++ b/arch/arm/mach-davinci/devices.c
@@ -82,10 +82,10 @@ static struct resource mmcsd0_resources[] = {
},
/* DMA channels: RX, then TX */
{
- .start = DAVINCI_DMA_MMCRXEVT,
+ .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCRXEVT),
.flags = IORESOURCE_DMA,
}, {
- .start = DAVINCI_DMA_MMCTXEVT,
+ .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCTXEVT),
.flags = IORESOURCE_DMA,
},
};
@@ -119,10 +119,10 @@ static struct resource mmcsd1_resources[] = {
},
/* DMA channels: RX, then TX */
{
- .start = 30, /* rx */
+ .start = EDMA_CTLR_CHAN(0, 30), /* rx */
.flags = IORESOURCE_DMA,
}, {
- .start = 31, /* tx */
+ .start = EDMA_CTLR_CHAN(0, 31), /* tx */
.flags = IORESOURCE_DMA,
},
};