1menu "DMA support"
2
3
4config SH_DMA
5	bool "SuperH on-chip DMA controller (DMAC) support"
6	depends on CPU_SH3 || CPU_SH4
7	default n
8
9config SH_DMA_IRQ_MULTI
10	bool
11	depends on SH_DMA
12	default y if CPU_SUBTYPE_SH7750  || CPU_SUBTYPE_SH7751  || \
13		     CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7750R || \
14		     CPU_SUBTYPE_SH7751R || CPU_SUBTYPE_SH7091  || \
15		     CPU_SUBTYPE_SH7763  || CPU_SUBTYPE_SH7764  || \
16		     CPU_SUBTYPE_SH7780  || CPU_SUBTYPE_SH7785  || \
17		     CPU_SUBTYPE_SH7760
18
19config SH_DMA_API
20	depends on SH_DMA
21	bool "SuperH DMA API support"
22	default n
23	help
24	  SH_DMA_API always enabled DMA API of used SuperH.
25	  If you want to use DMA ENGINE, you must not enable this.
26	  Please enable DMA_ENGINE and SH_DMAE.
27
28config NR_ONCHIP_DMA_CHANNELS
29	int
30	depends on SH_DMA
31	default "4" if CPU_SUBTYPE_SH7750  || CPU_SUBTYPE_SH7751  || \
32		       CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7091
33	default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || \
34		       CPU_SUBTYPE_SH7760
35	default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7780  || \
36			CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7724
37	default "6"
38	help
39	  This allows you to specify the number of channels that the on-chip
40	  DMAC supports. This will be 4 for SH7750/SH7751/Sh7750S/SH7091 and 8 for the
41	  SH7750R/SH7751R/SH7760, 12 for the SH7723/SH7780/SH7785/SH7724, default is 6.
42
43config NR_DMA_CHANNELS_BOOL
44	depends on SH_DMA
45	bool "Override default number of maximum DMA channels"
46	help
47	  This allows you to forcibly update the maximum number of supported
48	  DMA channels for a given board. If this is unset, this will default
49	  to the number of channels that the on-chip DMAC has.
50
51config NR_DMA_CHANNELS
52	int "Maximum number of DMA channels"
53	depends on SH_DMA && NR_DMA_CHANNELS_BOOL
54	default NR_ONCHIP_DMA_CHANNELS
55	help
56	  This allows you to specify the maximum number of DMA channels to
57	  support. Setting this to a higher value allows for cascading DMACs
58	  with additional channels.
59
60config SH_DMABRG
61	bool "SH7760 DMABRG support"
62	depends on CPU_SUBTYPE_SH7760
63	help
64	  The DMABRG does data transfers from main memory to Audio/USB units
65	  of the SH7760.
66	  Say Y if you want to use Audio/USB DMA on your SH7760 board.
67
68config PVR2_DMA
69	tristate "PowerVR 2 DMAC support"
70	depends on SH_DREAMCAST && SH_DMA
71	help
72	  Selecting this will enable support for the PVR2 DMA controller.
73	  As this chains off of the on-chip DMAC, that must also be
74	  enabled by default.
75
76	  This is primarily used by the pvr2fb framebuffer driver for
77	  certain optimizations, but is not necessary for functionality.
78
79	  If in doubt, say N.
80
81config G2_DMA
82	tristate "G2 Bus DMA support"
83	depends on SH_DREAMCAST
84	select SH_DMA_API
85	help
86	  This enables support for the DMA controller for the Dreamcast's
87	  G2 bus. Drivers that want this will generally enable this on
88	  their own.
89
90	  If in doubt, say N.
91
92endmenu
93