video: driver: new workhandler for inst events

create a new work handler and post and handle
events like psc.
introduce reuse concept for internal buffers.

Change-Id: Ibeaabae1b5923681756e959389df00b287206fb6
Signed-off-by: Darshana Patil <darshana@codeaurora.org>

driver/vidc/inc/msm_vidc_core.h

@@ -60,6 +60,18 @@ enum msm_vidc_core_state {
 	MSM_VIDC_CORE_ERROR        = 2,
 };
 
+enum work_type {
+	MSM_VIDC_INST_WORK_PSC = 1,
+};
+
+struct work_header {
+	void *data;
+	struct list_head list;
+	enum work_type type;
+	u32 session_id;
+	u32 data_size;
+};
+
 struct msm_vidc_core {
 	struct platform_device                *pdev;
 	struct msm_video_device                vdev[2];
@@ -108,6 +120,9 @@ struct msm_vidc_core {
 	u32                                    header_id;
 	u32                                    packet_id;
 	struct completion                      init_done;
+	struct list_head                       inst_works; /* list of struct work_header */
+	struct delayed_work                    inst_work;
+	struct workqueue_struct               *inst_workq;
 };
 
 #endif // _MSM_VIDC_CORE_H_

driver/vidc/inc/msm_vidc_driver.h

@@ -130,6 +130,8 @@ int v4l2_type_to_driver_port(struct msm_vidc_inst *inst, u32 type,
 	const char *func);
 int msm_vidc_change_inst_state(struct msm_vidc_inst *inst,
 	enum msm_vidc_inst_state state, const char *func);
+int msm_vidc_get_input_internal_buffers(struct msm_vidc_inst *inst,
+	enum msm_vidc_buffer_type buffer_type);
 int msm_vidc_create_internal_buffers(struct msm_vidc_inst *inst,
 		enum msm_vidc_buffer_type buffer_type);
 int msm_vidc_queue_internal_buffers(struct msm_vidc_inst *inst,

driver/vidc/inc/msm_vidc_internal.h

@@ -691,6 +691,7 @@ struct msm_vidc_buffers {
 	u32                    extra_count;
 	u32                    actual_count;
 	u32                    size;
+	bool                   reuse;
 };
 
 struct msm_vidc_ssr {

driver/vidc/inc/venus_hfi.h

@@ -71,6 +71,7 @@ int venus_hfi_scale_buses(struct msm_vidc_inst* inst, u64 bw_ddr, u64 bw_llcc);
 
 void venus_hfi_work_handler(struct work_struct *work);
 void venus_hfi_pm_work_handler(struct work_struct *work);
+void venus_hfi_inst_work_handler(struct work_struct *work);
 irqreturn_t venus_hfi_isr(int irq, void *data);
 
 void __write_register(struct msm_vidc_core *core,