mx31: changed CONSISTENT_DMA_SIZE to 8M for mx31 video

Signed-off-by: Valentin Longchamp <valentin.longchamp@epfl.ch>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/plat-mxc/include/mach/memory.h

@@ -32,4 +32,12 @@
 #define CONSISTENT_DMA_SIZE SZ_4M
 #endif /* CONFIG_MX1_VIDEO */
 
+#if defined(CONFIG_MX3_VIDEO)
+/*
+ * Increase size of DMA-consistent memory region.
+ * This is required for mx3 camera driver to capture at least two QXGA frames.
+ */
+#define CONSISTENT_DMA_SIZE SZ_8M
+#endif /* CONFIG_MX3_VIDEO */
+
 #endif /* __ASM_ARCH_MXC_MEMORY_H__ */

drivers/media/video/Kconfig

@@ -758,10 +758,14 @@ config VIDEO_MX1
 	---help---
 	  This is a v4l2 driver for the i.MX1/i.MXL CMOS Sensor Interface
 
+config MX3_VIDEO
+	bool
+
 config VIDEO_MX3
 	tristate "i.MX3x Camera Sensor Interface driver"
 	depends on VIDEO_DEV && MX3_IPU && SOC_CAMERA
 	select VIDEOBUF_DMA_CONTIG
+	select MX3_VIDEO
 	---help---
 	  This is a v4l2 driver for the i.MX3x Camera Sensor Interface