driver: vidc: add support for control initialization

Add support for control initialization and set control
implementation. Modified hfi_create_header() and
hfi_create_packet() to handle offset and num_packets
within in the function itself.

Change-Id: If8560be8a884c5df2fcc91f75be90311f1003a41
Signed-off-by: Akshata Sahukar <asahukar@codeaurora.org>
Signed-off-by: Maheshwar Ajja <majja@codeaurora.org>

driver/vidc/inc/msm_vidc_platform.h

@@ -9,6 +9,7 @@
 #include <linux/platform_device.h>
 
 #include "msm_vidc_internal.h"
+#include <media/v4l2-ctrls.h>
 
 struct msm_platform_core_capability {
 	enum msm_vidc_core_capability_type type;
@@ -23,13 +24,16 @@ struct msm_platform_inst_capability {
 	s32 max;
 	u32 step_or_mask;
 	s32 value;
-	enum msm_vidc_inst_capability_flags flags;
 	u32 v4l2_id;
 	u32 hfi_id;
-	u8 parents[MAX_CAP_PARENTS];
-	u8 children[MAX_CAP_CHILDREN];
-	void (*adjust)(void *inst, s32 new_value);
-	int (*set)(void *inst, struct v4l2_ctrl *ctrl);
+	enum msm_vidc_inst_capability_flags flags;
+	enum msm_vidc_inst_capability_type parents[MAX_CAP_PARENTS];
+	enum msm_vidc_inst_capability_type children[MAX_CAP_CHILDREN];
+	int (*adjust)(void *inst,
+		enum msm_vidc_inst_capability_type cap_id,
+		struct v4l2_ctrl *ctrl);
+	int (*set)(void *inst,
+		enum msm_vidc_inst_capability_type cap_id);
 };
 
 struct msm_vidc_csc_coeff {