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

#include "sh_css_sp.h"

#include "dma.h"        /* N_DMA_CHANNEL_ID */

#include <type_support.h>
#include "ia_css_binary.h"
#include "sh_css_hrt.h"
#include "sh_css_defs.h"
#include "sh_css_internal.h"
#include "ia_css_debug.h"
#include "ia_css_debug_internal.h"
#include "sh_css_legacy.h"

#include "gdc_device.h"                         /* HRT_GDC_N */

/*#include "sp.h"*/     /* host2sp_enqueue_frame_data() */

#include "assert_support.h"

#include "ia_css_queue.h"       /* host_sp_enqueue_XXX */
#include "ia_css_event.h"       /* ia_css_event_encode */
/*
 * @brief Encode the information into the software-event.
 * Refer to "sw_event_public.h" for details.
 */
bool ia_css_event_encode(
    u8  *in,
    u8  nr,
    uint32_t    *out)
{
        bool ret;
        u32 nr_of_bits;
        u32 i;

        assert(in);
        assert(out);
        OP___assert(nr > 0 && nr <= MAX_NR_OF_PAYLOADS_PER_SW_EVENT);

        /* initialize the output */
        *out = 0;

        /* get the number of bits per information */
        nr_of_bits = sizeof(uint32_t) * 8 / nr;

        /* compress the all inputs into a signle output */
        for (i = 0; i < nr; i++) {
                *out <<= nr_of_bits;
                *out |= in[i];
        }

        /* get the return value */
        ret = (nr > 0 && nr <= MAX_NR_OF_PAYLOADS_PER_SW_EVENT);

        return ret;
}

void ia_css_event_decode(
    u32 event,
    uint8_t *payload)
{
        assert(payload[1] == 0);
        assert(payload[2] == 0);
        assert(payload[3] == 0);

        ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE_PRIVATE,
                            "ia_css_event_decode() enter:\n");

        /* First decode according to the common case
         * In case of a PORT_EOF event we overwrite with
         * the specific values
         * This is somewhat ugly but probably somewhat efficient
         * (and it avoids some code duplication)
         */
        payload[0] = event & 0xff;  /*event_code */
        payload[1] = (event >> 8) & 0xff;
        payload[2] = (event >> 16) & 0xff;
        payload[3] = 0;

        switch (payload[0]) {
        case SH_CSS_SP_EVENT_PORT_EOF:
                payload[2] = 0;
                payload[3] = (event >> 24) & 0xff;
                break;

        case SH_CSS_SP_EVENT_ACC_STAGE_COMPLETE:
        case SH_CSS_SP_EVENT_TIMER:
        case SH_CSS_SP_EVENT_FRAME_TAGGED:
        case SH_CSS_SP_EVENT_FW_WARNING:
        case SH_CSS_SP_EVENT_FW_ASSERT:
                payload[3] = (event >> 24) & 0xff;
                break;
        default:
                break;
        }
}