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authorPaul Mundt <lethal@linux-sh.org>2009-03-17 09:30:36 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-03-17 09:30:36 +0900
commitda62e71d13ad0b76011491e36cb58999c464516a (patch)
tree68ef5f8f6d49352780773f862427a31fad791324 /arch/sh/drivers/dma
parent988f831df398ff36f67b095245060c24c354e9e9 (diff)
sh: dma: Make PVR2 DMA configurable.
With arch/sh/drivers/dma/ always being built, the Dreamcast DMA engines are being unconditionally built in, regardless of whether the DMA API is enabled or not. This is a regression from previous behaviour, but there is not much advantage in building them all in unconditionally regardless. Add a new config option to make it optional, and update the only user of it to reflect that. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/drivers/dma')
-rw-r--r--arch/sh/drivers/dma/Kconfig13
-rw-r--r--arch/sh/drivers/dma/Makefile3
2 files changed, 15 insertions, 1 deletions
diff --git a/arch/sh/drivers/dma/Kconfig b/arch/sh/drivers/dma/Kconfig
index 32bb8fa605c..ae26610837b 100644
--- a/arch/sh/drivers/dma/Kconfig
+++ b/arch/sh/drivers/dma/Kconfig
@@ -54,4 +54,17 @@ config SH_DMABRG
of the SH7760.
Say Y if you want to use Audio/USB DMA on your SH7760 board.
+config PVR2_DMA
+ tristate "PowerVR 2 DMAC support"
+ depends on SH_DREAMCAST && SH_DMA
+ help
+ Selecting this will enable support for the PVR2 DMA controller.
+ As this chains off of the on-chip DMAC, that must also be
+ enabled by default.
+
+ This is primarily used by the pvr2fb framebuffer driver for
+ certain optimizations, but is not necessary for functionality.
+
+ If in doubt, say N.
+
endmenu
diff --git a/arch/sh/drivers/dma/Makefile b/arch/sh/drivers/dma/Makefile
index ab956adacb4..cff52cb6ac7 100644
--- a/arch/sh/drivers/dma/Makefile
+++ b/arch/sh/drivers/dma/Makefile
@@ -4,5 +4,6 @@
obj-$(CONFIG_SH_DMA_API) += dma-api.o dma-sysfs.o
obj-$(CONFIG_SH_DMA) += dma-sh.o
-obj-$(CONFIG_SH_DREAMCAST) += dma-pvr2.o dma-g2.o
+obj-$(CONFIG_SH_DREAMCAST) += dma-g2.o
+obj-$(CONFIG_PVR2_DMA) += dma-pvr2.o
obj-$(CONFIG_SH_DMABRG) += dmabrg.o