[PATCH 15/24] mx3-camera: support asynchronous subdevice registration

[Guennadi Liakhovetski]

To support asynchronous subdevice registration we only have to pass a
subdevice descriptor array from driver platform data to soc-camera for
camera host driver registration.

Signed-off-by: Guennadi Liakhovetski <g.liakhovet...@gmx.de>
---
 drivers/media/platform/soc_camera/mx3_camera.c |    6 ++++++
 include/linux/platform_data/camera-mx3.h       |    3 +++
 2 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/drivers/media/platform/soc_camera/mx3_camera.c 
b/drivers/media/platform/soc_camera/mx3_camera.c
index 94203f6..75215bc 100644
--- a/drivers/media/platform/soc_camera/mx3_camera.c
+++ b/drivers/media/platform/soc_camera/mx3_camera.c
@@ -19,6 +19,7 @@
 #include <linux/sched.h>
 #include <linux/dma/ipu-dma.h>
 
+#include <media/v4l2-async.h>
 #include <media/v4l2-common.h>
 #include <media/v4l2-dev.h>
 #include <media/videobuf2-dma-contig.h>
@@ -1224,6 +1225,11 @@ static int mx3_camera_probe(struct platform_device *pdev)
                goto eallocctx;
        }
 
+       if (pdata->asd_sizes) {
+               soc_host->asd = pdata->asd;
+               soc_host->asd_sizes = pdata->asd_sizes;
+       }
+
        err = soc_camera_host_register(soc_host);
        if (err)
                goto ecamhostreg;
diff --git a/include/linux/platform_data/camera-mx3.h 
b/include/linux/platform_data/camera-mx3.h
index f226ee3..96f0f78 100644
--- a/include/linux/platform_data/camera-mx3.h
+++ b/include/linux/platform_data/camera-mx3.h
@@ -33,6 +33,7 @@
 #define MX3_CAMERA_DATAWIDTH_MASK (MX3_CAMERA_DATAWIDTH_4 | 
MX3_CAMERA_DATAWIDTH_8 | \
                                   MX3_CAMERA_DATAWIDTH_10 | 
MX3_CAMERA_DATAWIDTH_15)
 
+struct v4l2_async_subdev;
 /**
  * struct mx3_camera_pdata - i.MX3x camera platform data
  * @flags:     MX3_CAMERA_* flags
@@ -43,6 +44,8 @@ struct mx3_camera_pdata {
        unsigned long flags;
        unsigned long mclk_10khz;
        struct device *dma_dev;
+       struct v4l2_async_subdev **asd; /* Flat array, arranged in groups */
+       int *asd_sizes;                 /* 0-terminated array pf asd group 
sizes */
 };
 
 #endif
-- 
1.7.2.5

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