V4L/DVB (8610): Add suspend/resume capabilities to soc_camera.

Add suspend/resume hooks to call soc operation specific
suspend and resume functions. This ensures the camera
chip has been previously resumed, as well as the camera
bus.
These hooks in camera chip drivers should save/restore
chip context between suspend and resume time.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h
index 1de98f150e99..d548de326722 100644
--- a/include/media/soc_camera.h
+++ b/include/media/soc_camera.h
@@ -14,6 +14,7 @@
 
 #include <linux/videodev2.h>
 #include <media/videobuf-core.h>
+#include <linux/pm.h>
 
 struct soc_camera_device {
         struct list_head list;
@@ -63,6 +64,8 @@ struct soc_camera_host_ops {
         struct module *owner;
         int (*add)(struct soc_camera_device *);
         void (*remove)(struct soc_camera_device *);
+        int (*suspend)(struct soc_camera_device *, pm_message_t state);
+        int (*resume)(struct soc_camera_device *);
         int (*set_fmt_cap)(struct soc_camera_device *, __u32,
                            struct v4l2_rect *);
         int (*try_fmt_cap)(struct soc_camera_device *, struct v4l2_format *);
@@ -111,6 +114,8 @@ struct soc_camera_ops {
         struct module *owner;
         int (*probe)(struct soc_camera_device *);
         void (*remove)(struct soc_camera_device *);
+        int (*suspend)(struct soc_camera_device *, pm_message_t state);
+        int (*resume)(struct soc_camera_device *);
         int (*init)(struct soc_camera_device *);
         int (*release)(struct soc_camera_device *);
         int (*start_capture)(struct soc_camera_device *);