arch/sh/drivers/dma/Kconfig

   1 menu "DMA support"
   2
   3 config SH_DMA_API
   4         bool
   5
   6 config SH_DMA
   7         bool "SuperH on-chip DMA controller (DMAC) support"
   8         depends on CPU_SH3 || CPU_SH4
   9         select SH_DMA_API
  10         default n
  11
  12 config NR_ONCHIP_DMA_CHANNELS
  13         int
  14         depends on SH_DMA
  15         default "6" if CPU_SUBTYPE_SH7720
  16         default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R
  17         default "12" if CPU_SUBTYPE_SH7780
  18         default "4"
  19         help
  20           This allows you to specify the number of channels that the on-chip
  21           DMAC supports. This will be 4 for SH7750/SH7751 and 8 for the
  22           SH7750R/SH7751R.
  23
  24 config NR_DMA_CHANNELS_BOOL
  25         depends on SH_DMA
  26         bool "Override default number of maximum DMA channels"
  27         help
  28           This allows you to forcibly update the maximum number of supported
  29           DMA channels for a given board. If this is unset, this will default
  30           to the number of channels that the on-chip DMAC has.
  31
  32 config NR_DMA_CHANNELS
  33         int "Maximum number of DMA channels"
  34         depends on SH_DMA && NR_DMA_CHANNELS_BOOL
  35         default NR_ONCHIP_DMA_CHANNELS
  36         help
  37           This allows you to specify the maximum number of DMA channels to
  38           support. Setting this to a higher value allows for cascading DMACs
  39           with additional channels.
  40
  41 config SH_DMABRG
  42         bool "SH7760 DMABRG support"
  43         depends on CPU_SUBTYPE_SH7760
  44         help
  45           The DMABRG does data transfers from main memory to Audio/USB units
  46           of the SH7760.
  47           Say Y if you want to use Audio/USB DMA on your SH7760 board.
  48
  49 endmenu