1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Support for Intel Camera Imaging ISP subsystem. 4 * Copyright (c) 2015, Intel Corporation. 5 */ 6 7 #ifndef __IA_CSS_BUFFER_H 8 #define __IA_CSS_BUFFER_H 9 10 /* @file 11 * This file contains datastructures and types for buffers used in CSS 12 */ 13 14 #include <type_support.h> 15 #include "ia_css_types.h" 16 #include "ia_css_timer.h" 17 18 /* Enumeration of buffer types. Buffers can be queued and de-queued 19 * to hand them over between IA and ISP. 20 */ 21 enum ia_css_buffer_type { 22 IA_CSS_BUFFER_TYPE_INVALID = -1, 23 IA_CSS_BUFFER_TYPE_3A_STATISTICS = 0, 24 IA_CSS_BUFFER_TYPE_DIS_STATISTICS, 25 IA_CSS_BUFFER_TYPE_LACE_STATISTICS, 26 IA_CSS_BUFFER_TYPE_INPUT_FRAME, 27 IA_CSS_BUFFER_TYPE_OUTPUT_FRAME, 28 IA_CSS_BUFFER_TYPE_SEC_OUTPUT_FRAME, 29 IA_CSS_BUFFER_TYPE_VF_OUTPUT_FRAME, 30 IA_CSS_BUFFER_TYPE_SEC_VF_OUTPUT_FRAME, 31 IA_CSS_BUFFER_TYPE_RAW_OUTPUT_FRAME, 32 IA_CSS_BUFFER_TYPE_CUSTOM_INPUT, 33 IA_CSS_BUFFER_TYPE_CUSTOM_OUTPUT, 34 IA_CSS_BUFFER_TYPE_METADATA, 35 IA_CSS_BUFFER_TYPE_PARAMETER_SET, 36 IA_CSS_BUFFER_TYPE_PER_FRAME_PARAMETER_SET, 37 IA_CSS_NUM_DYNAMIC_BUFFER_TYPE, 38 IA_CSS_NUM_BUFFER_TYPE 39 }; 40 41 /* Driver API is not SP/ISP visible, 64 bit types not supported on hivecc */ 42 43 /* Buffer structure. This is a container structure that enables content 44 * independent buffer queues and access functions. 45 */ 46 struct ia_css_buffer { 47 enum ia_css_buffer_type type; /** Buffer type. */ 48 unsigned int exp_id; 49 /** exposure id for this buffer; 0 = not available 50 see ia_css_event_public.h for more detail. */ 51 union { 52 struct ia_css_isp_3a_statistics 53 *stats_3a; /** 3A statistics & optionally RGBY statistics. */ 54 struct ia_css_isp_dvs_statistics *stats_dvs; /** DVS statistics. */ 55 struct ia_css_isp_skc_dvs_statistics *stats_skc_dvs; /** SKC DVS statistics. */ 56 struct ia_css_frame *frame; /** Frame buffer. */ 57 struct ia_css_acc_param *custom_data; /** Custom buffer. */ 58 struct ia_css_metadata *metadata; /** Sensor metadata. */ 59 } data; /** Buffer data pointer. */ 60 u64 driver_cookie; /** cookie for the driver */ 61 struct ia_css_time_meas 62 timing_data; /** timing data (readings from the timer) */ 63 struct ia_css_clock_tick 64 isys_eof_clock_tick; /** ISYS's end of frame timer tick*/ 65 }; 66 67 /* @brief Dequeue param buffers from sp2host_queue 68 * 69 * @return None 70 * 71 * This function must be called at every driver interrupt handler to prevent 72 * overflow of sp2host_queue. 73 */ 74 void 75 ia_css_dequeue_param_buffers(void); 76 77 #endif /* __IA_CSS_BUFFER_H */ 78