[media] uvcvideo: Properly report the inactive flag for inactive controls

Note the unused in this patch slave_ids addition to the mappings will get
used in a follow up patch to generate control change events for the slave
ctrls when their flags change due to the master control changing value.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 37 insertions, 0 deletions

diff --git a/drivers/media/video/uvc/uvc_ctrl.c b/drivers/media/video/uvc/uvc_ctrl.c
index f15a437e5861..ae7371f3a39e 100644
--- a/drivers/media/video/uvc/uvc_ctrl.c
+++ b/drivers/media/video/uvc/uvc_ctrl.c
@@ -421,6 +421,8 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] = {
                 .offset         = 0,
                 .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
                 .data_type      = UVC_CTRL_DATA_TYPE_SIGNED,
+                .master_id      = V4L2_CID_HUE_AUTO,
+                .master_manual  = 0,
         },
         {
                 .id             = V4L2_CID_SATURATION,
@@ -493,6 +495,7 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] = {
                 .offset         = 0,
                 .v4l2_type      = V4L2_CTRL_TYPE_BOOLEAN,
                 .data_type      = UVC_CTRL_DATA_TYPE_BOOLEAN,
+                .slave_ids      = { V4L2_CID_HUE, },
         },
         {
                 .id             = V4L2_CID_EXPOSURE_AUTO,
@@ -505,6 +508,7 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] = {
                 .data_type      = UVC_CTRL_DATA_TYPE_BITMASK,
                 .menu_info      = exposure_auto_controls,
                 .menu_count     = ARRAY_SIZE(exposure_auto_controls),
+                .slave_ids      = { V4L2_CID_EXPOSURE_ABSOLUTE, },
         },
         {
                 .id             = V4L2_CID_EXPOSURE_AUTO_PRIORITY,
@@ -525,6 +529,8 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] = {
                 .offset         = 0,
                 .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
                 .data_type      = UVC_CTRL_DATA_TYPE_UNSIGNED,
+                .master_id      = V4L2_CID_EXPOSURE_AUTO,
+                .master_manual  = V4L2_EXPOSURE_MANUAL,
         },
         {
                 .id             = V4L2_CID_AUTO_WHITE_BALANCE,
@@ -535,6 +541,7 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] = {
                 .offset         = 0,
                 .v4l2_type      = V4L2_CTRL_TYPE_BOOLEAN,
                 .data_type      = UVC_CTRL_DATA_TYPE_BOOLEAN,
+                .slave_ids      = { V4L2_CID_WHITE_BALANCE_TEMPERATURE, },
         },
         {
                 .id             = V4L2_CID_WHITE_BALANCE_TEMPERATURE,
@@ -545,6 +552,8 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] = {
                 .offset         = 0,
                 .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
                 .data_type      = UVC_CTRL_DATA_TYPE_UNSIGNED,
+                .master_id      = V4L2_CID_AUTO_WHITE_BALANCE,
+                .master_manual  = 0,
         },
         {
                 .id             = V4L2_CID_AUTO_WHITE_BALANCE,
@@ -555,6 +564,8 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] = {
                 .offset         = 0,
                 .v4l2_type      = V4L2_CTRL_TYPE_BOOLEAN,
                 .data_type      = UVC_CTRL_DATA_TYPE_BOOLEAN,
+                .slave_ids      = { V4L2_CID_BLUE_BALANCE,
+                                    V4L2_CID_RED_BALANCE },
         },
         {
                 .id             = V4L2_CID_BLUE_BALANCE,
@@ -565,6 +576,8 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] = {
                 .offset         = 0,
                 .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
                 .data_type      = UVC_CTRL_DATA_TYPE_SIGNED,
+                .master_id      = V4L2_CID_AUTO_WHITE_BALANCE,
+                .master_manual  = 0,
         },
         {
                 .id             = V4L2_CID_RED_BALANCE,
@@ -575,6 +588,8 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] = {
                 .offset         = 16,
                 .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
                 .data_type      = UVC_CTRL_DATA_TYPE_SIGNED,
+                .master_id      = V4L2_CID_AUTO_WHITE_BALANCE,
+                .master_manual  = 0,
         },
         {
                 .id             = V4L2_CID_FOCUS_ABSOLUTE,
@@ -585,6 +600,8 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] = {
                 .offset         = 0,
                 .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
                 .data_type      = UVC_CTRL_DATA_TYPE_UNSIGNED,
+                .master_id      = V4L2_CID_FOCUS_AUTO,
+                .master_manual  = 0,
         },
         {
                 .id             = V4L2_CID_FOCUS_AUTO,
@@ -595,6 +612,7 @@ static struct uvc_control_mapping uvc_ctrl_mappings[] = {
                 .offset         = 0,
                 .v4l2_type      = V4L2_CTRL_TYPE_BOOLEAN,
                 .data_type      = UVC_CTRL_DATA_TYPE_BOOLEAN,
+                .slave_ids      = { V4L2_CID_FOCUS_ABSOLUTE, },
         },
         {
                 .id             = V4L2_CID_IRIS_ABSOLUTE,
@@ -943,6 +961,8 @@ static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
         struct uvc_control_mapping *mapping,
         struct v4l2_queryctrl *v4l2_ctrl)
 {
+        struct uvc_control_mapping *master_map = NULL;
+        struct uvc_control *master_ctrl = NULL;
         struct uvc_menu_info *menu;
         unsigned int i;
 
@@ -957,6 +977,19 @@ static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
         if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR))
                 v4l2_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
 
+        if (mapping->master_id)
+                __uvc_find_control(ctrl->entity, mapping->master_id,
+                                   &master_map, &master_ctrl, 0);
+        if (master_ctrl && (master_ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR)) {
+                s32 val;
+                int ret = __uvc_ctrl_get(chain, master_ctrl, master_map, &val);
+                if (ret < 0)
+                        return ret;
+
+                if (val != mapping->master_manual)
+                                v4l2_ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
+        }
+
         if (!ctrl->cached) {
                 int ret = uvc_ctrl_populate_cache(chain, ctrl);
                 if (ret < 0)
diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h
index e43deb715d98..777bb7505f8d 100644
--- a/drivers/media/video/uvc/uvcvideo.h
+++ b/drivers/media/video/uvc/uvcvideo.h
@@ -172,6 +172,10 @@ struct uvc_control_mapping {
         struct uvc_menu_info *menu_info;
         __u32 menu_count;
 
+        __u32 master_id;
+        __s32 master_manual;
+        __u32 slave_ids[2];
+
         __s32 (*get) (struct uvc_control_mapping *mapping, __u8 query,
                       const __u8 *data);
         void (*set) (struct uvc_control_mapping *mapping, __s32 value,