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4e1d17a1f7
commit f477a538c14d07f8c45e554c8c5208d588514e98 upstream. When G2_DMA is enabled and SH_DMA is disabled, it results in the following Kbuild warning: WARNING: unmet direct dependencies detected for SH_DMA_API Depends on [n]: SH_DMA [=n] Selected by [y]: - G2_DMA [=y] && SH_DREAMCAST [=y] The reason is that G2_DMA selects SH_DMA_API without depending on or selecting SH_DMA while SH_DMA_API depends on SH_DMA. When G2_DMA was first introduced with commit40f49e7ed7("sh: dma: Make G2 DMA configurable."), this wasn't an issue since SH_DMA_API didn't have such dependency, and this way was the only way to enable it since SH_DMA_API was non-visible. However, later SH_DMA_API was made visible and dependent on SH_DMA with commitd8902adcc1("dmaengine: sh: Add Support SuperH DMA Engine driver"). Let G2_DMA depend on SH_DMA_API instead to avoid Kbuild issues. Fixes:d8902adcc1("dmaengine: sh: Add Support SuperH DMA Engine driver") Signed-off-by: Necip Fazil Yildiran <fazilyildiran@gmail.com> Signed-off-by: Rich Felker <dalias@libc.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
75 lines
2.2 KiB
Plaintext
75 lines
2.2 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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menu "DMA support"
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config SH_DMA
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bool "SuperH on-chip DMA controller (DMAC) support"
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depends on CPU_SH3 || CPU_SH4
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default n
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config SH_DMA_IRQ_MULTI
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bool
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depends on SH_DMA
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default y if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || \
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CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7750R || \
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CPU_SUBTYPE_SH7751R || CPU_SUBTYPE_SH7091 || \
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CPU_SUBTYPE_SH7763 || CPU_SUBTYPE_SH7780 || \
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CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7760
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config SH_DMA_API
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depends on SH_DMA
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bool "SuperH DMA API support"
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default n
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help
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SH_DMA_API always enabled DMA API of used SuperH.
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If you want to use DMA ENGINE, you must not enable this.
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Please enable DMA_ENGINE and SH_DMAE.
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config NR_ONCHIP_DMA_CHANNELS
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int
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depends on SH_DMA
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default "4" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || \
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CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7091
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default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || \
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CPU_SUBTYPE_SH7760
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default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7780 || \
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CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7724
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default "6"
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help
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This allows you to specify the number of channels that the on-chip
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DMAC supports. This will be 4 for SH7750/SH7751/Sh7750S/SH7091 and 8 for the
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SH7750R/SH7751R/SH7760, 12 for the SH7723/SH7780/SH7785/SH7724, default is 6.
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config SH_DMABRG
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bool "SH7760 DMABRG support"
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depends on CPU_SUBTYPE_SH7760
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help
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The DMABRG does data transfers from main memory to Audio/USB units
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of the SH7760.
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Say Y if you want to use Audio/USB DMA on your SH7760 board.
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config PVR2_DMA
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tristate "PowerVR 2 DMAC support"
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depends on SH_DREAMCAST && SH_DMA
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help
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Selecting this will enable support for the PVR2 DMA controller.
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As this chains off of the on-chip DMAC, that must also be
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enabled by default.
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This is primarily used by the pvr2fb framebuffer driver for
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certain optimizations, but is not necessary for functionality.
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If in doubt, say N.
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config G2_DMA
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tristate "G2 Bus DMA support"
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depends on SH_DREAMCAST && SH_DMA_API
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help
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This enables support for the DMA controller for the Dreamcast's
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G2 bus. Drivers that want this will generally enable this on
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their own.
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If in doubt, say N.
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endmenu
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