Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[cascardo/linux.git] / include / media / v4l2-device.h

diff --git a/include/media/v4l2-device.h b/include/media/v4l2-device.h
index 9c58157..d5d45a8 100644 (file)
--- a/include/media/v4l2-device.h
+++ b/include/media/v4l2-device.h
@@ -196,11 +196,64 @@ static inline void v4l2_subdev_notify(struct v4l2_subdev *sd,
                        ##args);                                        \
 })
 
-#define v4l2_device_has_op(v4l2_dev, o, f)                             \
+/*
+ * Call the specified callback for all subdevs where grp_id & grpmsk != 0
+ * (if grpmsk == `0, then match them all). Ignore any errors. Note that you
+ * cannot add or delete a subdev while walking the subdevs list.
+ */
+#define v4l2_device_mask_call_all(v4l2_dev, grpmsk, o, f, args...)     \
+       do {                                                            \
+               struct v4l2_subdev *__sd;                               \
+                                                                       \
+               __v4l2_device_call_subdevs_p(v4l2_dev, __sd,            \
+                       !(grpmsk) || (__sd->grp_id & (grpmsk)), o, f ,  \
+                       ##args);                                        \
+       } while (0)
+
+/*
+ * Call the specified callback for all subdevs where grp_id & grpmsk != 0
+ * (if grpmsk == `0, then match them all). If the callback returns an error
+ * other than 0 or -ENOIOCTLCMD, then return with that error code. Note that
+ * you cannot add or delete a subdev while walking the subdevs list.
+ */
+#define v4l2_device_mask_call_until_err(v4l2_dev, grpmsk, o, f, args...) \
+({                                                                     \
+       struct v4l2_subdev *__sd;                                       \
+       __v4l2_device_call_subdevs_until_err_p(v4l2_dev, __sd,          \
+                       !(grpmsk) || (__sd->grp_id & (grpmsk)), o, f ,  \
+                       ##args);                                        \
+})
+
+/*
+ * Does any subdev with matching grpid (or all if grpid == 0) has the given
+ * op?
+ */
+#define v4l2_device_has_op(v4l2_dev, grpid, o, f)                      \
+({                                                                     \
+       struct v4l2_subdev *__sd;                                       \
+       bool __result = false;                                          \
+       list_for_each_entry(__sd, &(v4l2_dev)->subdevs, list) {         \
+               if ((grpid) && __sd->grp_id != (grpid))                 \
+                       continue;                                       \
+               if (v4l2_subdev_has_op(__sd, o, f)) {                   \
+                       __result = true;                                \
+                       break;                                          \
+               }                                                       \
+       }                                                               \
+       __result;                                                       \
+})
+
+/*
+ * Does any subdev with matching grpmsk (or all if grpmsk == 0) has the given
+ * op?
+ */
+#define v4l2_device_mask_has_op(v4l2_dev, grpmsk, o, f)                        \
 ({                                                                     \
        struct v4l2_subdev *__sd;                                       \
        bool __result = false;                                          \
        list_for_each_entry(__sd, &(v4l2_dev)->subdevs, list) {         \
+               if ((grpmsk) && !(__sd->grp_id & (grpmsk)))             \
+                       continue;                                       \
                if (v4l2_subdev_has_op(__sd, o, f)) {                   \
                        __result = true;                                \
                        break;                                          \