drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_buffer.h

   1 /*
   2  * Support for Intel Camera Imaging ISP subsystem.
   3  * Copyright (c) 2015, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  */
  14
  15 #ifndef __IA_CSS_BUFFER_H
  16 #define __IA_CSS_BUFFER_H
  17
  18 /** @file
  19  * This file contains datastructures and types for buffers used in CSS
  20  */
  21
  22 #include <type_support.h>
  23 #include "ia_css_types.h"
  24 #include "ia_css_timer.h"
  25
  26 /** Enumeration of buffer types. Buffers can be queued and de-queued
  27  *  to hand them over between IA and ISP.
  28  */
  29 enum ia_css_buffer_type {
  30         IA_CSS_BUFFER_TYPE_INVALID = -1,
  31         IA_CSS_BUFFER_TYPE_3A_STATISTICS = 0,
  32         IA_CSS_BUFFER_TYPE_DIS_STATISTICS,
  33         IA_CSS_BUFFER_TYPE_LACE_STATISTICS,
  34         IA_CSS_BUFFER_TYPE_INPUT_FRAME,
  35         IA_CSS_BUFFER_TYPE_OUTPUT_FRAME,
  36         IA_CSS_BUFFER_TYPE_SEC_OUTPUT_FRAME,
  37         IA_CSS_BUFFER_TYPE_VF_OUTPUT_FRAME,
  38         IA_CSS_BUFFER_TYPE_SEC_VF_OUTPUT_FRAME,
  39         IA_CSS_BUFFER_TYPE_RAW_OUTPUT_FRAME,
  40         IA_CSS_BUFFER_TYPE_CUSTOM_INPUT,
  41         IA_CSS_BUFFER_TYPE_CUSTOM_OUTPUT,
  42         IA_CSS_BUFFER_TYPE_METADATA,
  43         IA_CSS_BUFFER_TYPE_PARAMETER_SET,
  44         IA_CSS_BUFFER_TYPE_PER_FRAME_PARAMETER_SET,
  45         IA_CSS_NUM_DYNAMIC_BUFFER_TYPE,
  46         IA_CSS_NUM_BUFFER_TYPE
  47 };
  48
  49 /* Driver API is not SP/ISP visible, 64 bit types not supported on hivecc */
  50 #if !defined(__ISP)
  51 /** Buffer structure. This is a container structure that enables content
  52  *  independent buffer queues and access functions.
  53  */
  54 struct ia_css_buffer {
  55         enum ia_css_buffer_type type; /**< Buffer type. */
  56         unsigned int exp_id;
  57         /**< exposure id for this buffer; 0 = not available
  58              see ia_css_event_public.h for more detail. */
  59         union {
  60                 struct ia_css_isp_3a_statistics  *stats_3a;    /**< 3A statistics & optionally RGBY statistics. */
  61                 struct ia_css_isp_dvs_statistics *stats_dvs;   /**< DVS statistics. */
  62                 struct ia_css_isp_skc_dvs_statistics *stats_skc_dvs;  /**< SKC DVS statistics. */
  63                 struct ia_css_frame              *frame;       /**< Frame buffer. */
  64                 struct ia_css_acc_param          *custom_data; /**< Custom buffer. */
  65                 struct ia_css_metadata           *metadata;    /**< Sensor metadata. */
  66         } data; /**< Buffer data pointer. */
  67         uint64_t driver_cookie; /**< cookie for the driver */
  68         struct ia_css_time_meas timing_data; /**< timing data (readings from the timer) */
  69         struct ia_css_clock_tick isys_eof_clock_tick; /**< ISYS's end of frame timer tick*/
  70 };
  71
  72 /** @brief Dequeue param buffers from sp2host_queue
  73  *
  74  * @return                                       None
  75  *
  76  * This function must be called at every driver interrupt handler to prevent
  77  * overflow of sp2host_queue.
  78  */
  79 void
  80 ia_css_dequeue_param_buffers(void);
  81
  82 #endif /* !__ISP */
  83
  84 #endif /* __IA_CSS_BUFFER_H */