There aren't much things required for it to build with COMPILE_TEST.
It just needs to provide stub for an arm-dependent include.
Let's replicate the same solution used by ipmmu-vmsa, in order
to allow building omap3 with COMPILE_TEST.
The actual logic here came from this driver:
drivers/iommu/ipmmu-vmsa.c
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
---
drivers/media/platform/Kconfig | 8 ++++----
drivers/media/platform/omap3isp/isp.c | 7 +++++++
2 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index c7a1cf8a1b01..03c9dfeb7781 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -62,12 +62,12 @@ config VIDEO_MUX
config VIDEO_OMAP3
tristate "OMAP 3 Camera support"
- depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API && ARCH_OMAP3
+ depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API
depends on HAS_DMA && OF
- depends on OMAP_IOMMU
- select ARM_DMA_USE_IOMMU
+ depends on ((ARCH_OMAP3 && OMAP_IOMMU) || COMPILE_TEST)
+ select ARM_DMA_USE_IOMMU if OMAP_IOMMU
select VIDEOBUF2_DMA_CONTIG
- select MFD_SYSCON
+ select MFD_SYSCON if ARCH_OMAP3
select V4L2_FWNODE
---help---
Driver for an OMAP 3 camera controller.
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index 8eb000e3d8fd..2a11a709aa4f 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -61,7 +61,14 @@
#include <linux/sched.h>
#include <linux/vmalloc.h>
+#if defined(CONFIG_ARM) && !defined(CONFIG_IOMMU_DMA)
#include <asm/dma-iommu.h>
+#else
+#define arm_iommu_create_mapping(...) NULL
+#define arm_iommu_attach_device(...) -ENODEV
+#define arm_iommu_release_mapping(...) do {} while (0)
+#define arm_iommu_detach_device(...) do {} while (0)
+#endif
#include <media/v4l2-common.h>
#include <media/v4l2-fwnode.h>
--
2.14.3
