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