[media] m5mols: Implement .get_frame_desc subdev callback

.get_frame_desc can be used by host interface driver to query
properties of captured frames, e.g. required memory buffer size.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/media/i2c/m5mols/m5mols.h b/drivers/media/i2c/m5mols/m5mols.h
index 86c815be348c..4ab8b370e665 100644
--- a/drivers/media/i2c/m5mols/m5mols.h
+++ b/drivers/media/i2c/m5mols/m5mols.h
@@ -19,6 +19,13 @@
 #include <media/v4l2-subdev.h>
 #include "m5mols_reg.h"
 
+
+/* An amount of data transmitted in addition to the value
+ * determined by CAPP_JPEG_SIZE_MAX register.
+ */
+#define M5MOLS_JPEG_TAGS_SIZE           0x20000
+#define M5MOLS_MAIN_JPEG_SIZE_MAX       (5 * SZ_1M)
+
 extern int m5mols_debug;
 
 enum m5mols_restype {
@@ -67,12 +74,14 @@ struct m5mols_exif {
 /**
  * struct m5mols_capture - Structure for the capture capability
  * @exif: EXIF information
+ * @buf_size: internal JPEG frame buffer size, in bytes
  * @main: size in bytes of the main image
  * @thumb: size in bytes of the thumb image, if it was accompanied
  * @total: total size in bytes of the produced image
  */
 struct m5mols_capture {
         struct m5mols_exif exif;
+        unsigned int buf_size;
         u32 main;
         u32 thumb;
         u32 total;