/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Support for Intel Camera Imaging ISP subsystem.
 * Copyright (c) 2010 - 2015, Intel Corporation.
 */

#ifndef __IA_CSS_ISYS_COMM_H
#define __IA_CSS_ISYS_COMM_H

#include <type_support.h>
#include <input_system.h>

#include <platform_support.h>           /* inline */
#include <input_system_global.h>
#include <ia_css_stream_public.h>       /* IA_CSS_STREAM_MAX_ISYS_STREAM_PER_CH */

#define SH_CSS_NODES_PER_THREAD         2
#define SH_CSS_MAX_ISYS_CHANNEL_NODES   (SH_CSS_MAX_SP_THREADS * SH_CSS_NODES_PER_THREAD)

/*
 * a) ia_css_isys_stream_h & ia_css_isys_stream_cfg_t come from host.
 *
 * b) Here it is better  to use actual structures for stream handle
 * instead of opaque handles. Otherwise, we need to have another
 * communication channel to interpret that opaque handle(this handle is
 * maintained by host and needs to be populated to sp for every stream open)
 * */
typedef virtual_input_system_stream_t           *ia_css_isys_stream_h;
typedef virtual_input_system_stream_cfg_t       ia_css_isys_stream_cfg_t;

/*
 * error check for ISYS APIs.
 * */
typedef bool ia_css_isys_error_t;

static inline uint32_t ia_css_isys_generate_stream_id(
    u32 sp_thread_id,
    uint32_t    stream_id)
{
        return sp_thread_id * IA_CSS_STREAM_MAX_ISYS_STREAM_PER_CH + stream_id;
}

#endif  /*_IA_CSS_ISYS_COMM_H */