Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild...
[linux-2.6] / 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 SH_DMA_IRQ_MULTI
13         bool
14         depends on SH_DMA
15         default y if CPU_SUBTYPE_SH7750  || CPU_SUBTYPE_SH7751  || \
16                      CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7750R || \
17                      CPU_SUBTYPE_SH7751R || CPU_SUBTYPE_SH7091  || \
18                      CPU_SUBTYPE_SH7763  || CPU_SUBTYPE_SH7764  || \
19                      CPU_SUBTYPE_SH7780  || CPU_SUBTYPE_SH7785  || \
20                      CPU_SUBTYPE_SH7760
21
22 config NR_ONCHIP_DMA_CHANNELS
23         int
24         depends on SH_DMA
25         default "4" if CPU_SUBTYPE_SH7750  || CPU_SUBTYPE_SH7751  || \
26                        CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7091
27         default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || \
28                        CPU_SUBTYPE_SH7760
29         default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7780  || \
30                         CPU_SUBTYPE_SH7785
31         default "6"
32         help
33           This allows you to specify the number of channels that the on-chip
34           DMAC supports. This will be 4 for SH7091/SH7750/SH7751 and 8 for the
35           SH7750R/SH7751R.
36
37 config NR_DMA_CHANNELS_BOOL
38         depends on SH_DMA
39         bool "Override default number of maximum DMA channels"
40         help
41           This allows you to forcibly update the maximum number of supported
42           DMA channels for a given board. If this is unset, this will default
43           to the number of channels that the on-chip DMAC has.
44
45 config NR_DMA_CHANNELS
46         int "Maximum number of DMA channels"
47         depends on SH_DMA && NR_DMA_CHANNELS_BOOL
48         default NR_ONCHIP_DMA_CHANNELS
49         help
50           This allows you to specify the maximum number of DMA channels to
51           support. Setting this to a higher value allows for cascading DMACs
52           with additional channels.
53
54 config SH_DMABRG
55         bool "SH7760 DMABRG support"
56         depends on CPU_SUBTYPE_SH7760
57         help
58           The DMABRG does data transfers from main memory to Audio/USB units
59           of the SH7760.
60           Say Y if you want to use Audio/USB DMA on your SH7760 board.
61
62 config PVR2_DMA
63         tristate "PowerVR 2 DMAC support"
64         depends on SH_DREAMCAST && SH_DMA
65         help
66           Selecting this will enable support for the PVR2 DMA controller.
67           As this chains off of the on-chip DMAC, that must also be
68           enabled by default.
69
70           This is primarily used by the pvr2fb framebuffer driver for
71           certain optimizations, but is not necessary for functionality.
72
73           If in doubt, say N.
74
75 config G2_DMA
76         tristate "G2 Bus DMA support"
77         depends on SH_DREAMCAST
78         select SH_DMA_API
79         help
80           This enables support for the DMA controller for the Dreamcast's
81           G2 bus. Drivers that want this will generally enable this on
82           their own.
83
84           If in doubt, say N.
85
86 endmenu