aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-davinci/dma.c
AgeCommit message (Collapse)Author
2009-08-26davinci: EDMA: multiple CCs, channel mapping and API changesSudhakar Rajashekhara
- 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>
2009-04-27davinci: add EDMA driverKevin Hilman
Original code for 2.6.10 and 2.6.28 series done by Texas Instruments and MontaVista, but major updates and rework done by Troy Kisky and David Brownell. Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Sudhakar Rajashekhara <sudhakar.raj@ti.com> Cc: Troy Kisky <troy.kisky@boundarydevices.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>