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>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c
index de16f347566a..7a2f8ae89be2 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,
         },
 };