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dma
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Kconfig

Kconfig 2.2 KB
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  1. menu "DMA support"
    2. 

  2. 

  3. 

  4. config SH_DMA
    5. 

  5. 	bool "SuperH on-chip DMA controller (DMAC) support"
    6. 

  6. 	depends on CPU_SH3 || CPU_SH4
    7. 

  7. 	default n
    8. 

  8. 

  9. config SH_DMA_IRQ_MULTI
    10. 

  10. 	bool
    11. 

  11. 	depends on SH_DMA
    12. 

  12. 	default y if CPU_SUBTYPE_SH7750  || CPU_SUBTYPE_SH7751  || \
    13. 

  13. 		     CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7750R || \
    14. 

  14. 		     CPU_SUBTYPE_SH7751R || CPU_SUBTYPE_SH7091  || \
    15. 

  15. 		     CPU_SUBTYPE_SH7763  || CPU_SUBTYPE_SH7780  || \
    16. 

  16. 		     CPU_SUBTYPE_SH7785  || CPU_SUBTYPE_SH7760
    17. 

  17. 

  18. config SH_DMA_API
    19. 

  19. 	depends on SH_DMA
    20. 

  20. 	bool "SuperH DMA API support"
    21. 

  21. 	default n
    22. 

  22. 	help
    23. 

  23. 	  SH_DMA_API always enabled DMA API of used SuperH.
    24. 

  24. 	  If you want to use DMA ENGINE, you must not enable this.
    25. 

  25. 	  Please enable DMA_ENGINE and SH_DMAE.
    26. 

  26. 

  27. config NR_ONCHIP_DMA_CHANNELS
    28. 

  28. 	int
    29. 

  29. 	depends on SH_DMA
    30. 

  30. 	default "4" if CPU_SUBTYPE_SH7750  || CPU_SUBTYPE_SH7751  || \
    31. 

  31. 		       CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7091
    32. 

  32. 	default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || \
    33. 

  33. 		       CPU_SUBTYPE_SH7760
    34. 

  34. 	default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7780  || \
    35. 

  35. 			CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7724
    36. 

  36. 	default "6"
    37. 

  37. 	help
    38. 

  38. 	  This allows you to specify the number of channels that the on-chip
    39. 

  39. 	  DMAC supports. This will be 4 for SH7750/SH7751/Sh7750S/SH7091 and 8 for the
    40. 

  40. 	  SH7750R/SH7751R/SH7760, 12 for the SH7723/SH7780/SH7785/SH7724, default is 6.
    41. 

  41. 

  42. config SH_DMABRG
    43. 

  43. 	bool "SH7760 DMABRG support"
    44. 

  44. 	depends on CPU_SUBTYPE_SH7760
    45. 

  45. 	help
    46. 

  46. 	  The DMABRG does data transfers from main memory to Audio/USB units
    47. 

  47. 	  of the SH7760.
    48. 

  48. 	  Say Y if you want to use Audio/USB DMA on your SH7760 board.
    49. 

  49. 

  50. config PVR2_DMA
    51. 

  51. 	tristate "PowerVR 2 DMAC support"
    52. 

  52. 	depends on SH_DREAMCAST && SH_DMA
    53. 

  53. 	help
    54. 

  54. 	  Selecting this will enable support for the PVR2 DMA controller.
    55. 

  55. 	  As this chains off of the on-chip DMAC, that must also be
    56. 

  56. 	  enabled by default.
    57. 

  57. 

  58. 	  This is primarily used by the pvr2fb framebuffer driver for
    59. 

  59. 	  certain optimizations, but is not necessary for functionality.
    60. 

  60. 

  61. 	  If in doubt, say N.
    62. 

  62. 

  63. config G2_DMA
    64. 

  64. 	tristate "G2 Bus DMA support"
    65. 

  65. 	depends on SH_DREAMCAST
    66. 

  66. 	select SH_DMA_API
    67. 

  67. 	help
    68. 

  68. 	  This enables support for the DMA controller for the Dreamcast's
    69. 

  69. 	  G2 bus. Drivers that want this will generally enable this on
    70. 

  70. 	  their own.
    71. 

  71. 

  72. 	  If in doubt, say N.
    73. 

  73. 

  74. endmenu
    75.