video driver: calculate power based on max rate

1. Remove load based admission control for decoder.
2. For decoder, use max of frame rate, operating rate,
    timestamp rate and input rate for power calculations.
3. For encoder, use max of frame rate and operating rate
    for power calculations.

Change-Id: Ibdb2d4b29438d7f656a27771953d10e0a0e72edd

driver/vidc/inc/msm_vidc_driver.h

@@ -480,9 +480,9 @@ int msm_vidc_check_session_supported(struct msm_vidc_inst *inst);
 int msm_vidc_check_core_mbps(struct msm_vidc_inst *inst);
 int msm_vidc_check_core_mbpf(struct msm_vidc_inst *inst);
 int msm_vidc_check_scaling_supported(struct msm_vidc_inst *inst);
-int msm_vidc_update_timestamp(struct msm_vidc_inst *inst, u64 timestamp);
+int msm_vidc_update_timestamp_rate(struct msm_vidc_inst *inst, u64 timestamp);
 int msm_vidc_set_auto_framerate(struct msm_vidc_inst *inst, u64 timestamp);
-int msm_vidc_calc_window_avg_framerate(struct msm_vidc_inst *inst);
+int msm_vidc_get_timestamp_rate(struct msm_vidc_inst *inst);
 int msm_vidc_flush_ts(struct msm_vidc_inst *inst);
 int msm_vidc_ts_reorder_insert_timestamp(struct msm_vidc_inst *inst, u64 timestamp);
 int msm_vidc_ts_reorder_remove_timestamp(struct msm_vidc_inst *inst, u64 timestamp);
@@ -502,5 +502,7 @@ int msm_vidc_create_input_metadata_buffer(struct msm_vidc_inst *inst, int buf_fd
 int msm_vidc_update_input_meta_buffer_index(struct msm_vidc_inst *inst, struct vb2_buffer *vb2);
 int msm_vidc_update_input_rate(struct msm_vidc_inst *inst, u64 time_us);
 int msm_vidc_get_input_rate(struct msm_vidc_inst *inst);
+int msm_vidc_get_frame_rate(struct msm_vidc_inst *inst);
+int msm_vidc_get_operating_rate(struct msm_vidc_inst *inst);
 #endif // _MSM_VIDC_DRIVER_H_