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Subject[PATCH 2/2] PXA: add configurable consistent memory DMA size.
From: Rodolfo Giometti <giometti@linux.it>

Signed-off-by: Rodolfo Giometti <giometti@linux.it>
---
arch/arm/mach-pxa/include/mach/memory.h | 13 +++++++++++++
drivers/video/Kconfig | 11 +++++++++++
2 files changed, 24 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-pxa/include/mach/memory.h b/arch/arm/mach-pxa/include/mach/memory.h
index 552eb7f..247c2ef 100644
--- a/arch/arm/mach-pxa/include/mach/memory.h
+++ b/arch/arm/mach-pxa/include/mach/memory.h
@@ -49,4 +49,17 @@ void cmx270_pci_adjust_zones(int node, unsigned long *size,
#define ISA_DMA_THRESHOLD (PHYS_OFFSET + SZ_64M - 1)
#endif

+/* Override the ARM default */
+#ifdef CONFIG_FB_PXA_CONSISTENT_DMA_SIZE
+
+#if (CONFIG_FB_PXA_CONSISTENT_DMA_SIZE == 0)
+#undef CONFIG_FB_PXA_CONSISTENT_DMA_SIZE
+#define CONFIG_FB_PXA_CONSISTENT_DMA_SIZE 2
+#endif
+
+#define CONSISTENT_DMA_SIZE \
+ (((CONFIG_FB_PXA_CONSISTENT_DMA_SIZE + 1) & ~1) * 1024 * 1024)
+
+#endif
+
#endif
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 5d5c8c8..6720d78 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -1808,6 +1808,17 @@ config FB_PXA_OVERLAY
---help---
Frame buffer overlay driver for PXA27x

+config FB_PXA_CONSISTENT_DMA_SIZE
+ int "Consistent DMA memory size (MB)"
+ depends on FB_PXA
+ range 1 14
+ default 2
+ help
+ Increase the DMA consistent memory size according to your video
+ memory needs, for example if you want to use overlay support.
+ The size must be 2MB aligned.
+ If unsure say 2.
+
config FB_PXA_PARAMETERS
bool "PXA LCD command line parameters"
default n
--
1.5.4.3


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