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

#include "input_system.h"

#include "ia_css_isys.h"
#include "platform_support.h"

#include "isys_dma_public.h"    /* isys2401_dma_set_max_burst_size() */
#include "isys_irq.h"

static input_system_err_t ia_css_isys_2400_init(void)
{
        backend_channel_cfg_t backend_ch0;
        backend_channel_cfg_t backend_ch1;
        target_cfg2400_t targetB;
        target_cfg2400_t targetC;
        u32 acq_mem_region_size = 24;
        u32 acq_nof_mem_regions = 2;
        input_system_err_t error = INPUT_SYSTEM_ERR_NO_ERROR;

        memset(&backend_ch0, 0, sizeof(backend_channel_cfg_t));
        memset(&backend_ch1, 0, sizeof(backend_channel_cfg_t));
        memset(&targetB, 0, sizeof(targetB));
        memset(&targetC, 0, sizeof(targetC));

        error = input_system_configuration_reset();
        if (error != INPUT_SYSTEM_ERR_NO_ERROR)
                return error;

        error = input_system_csi_xmem_channel_cfg(
                    0,                  /*ch_id                 */
                    INPUT_SYSTEM_PORT_A,        /*port                  */
                    backend_ch0,                /*backend_ch            */
                    32,                 /*mem_region_size       */
                    6,                  /*nof_mem_regions       */
                    acq_mem_region_size,        /*acq_mem_region_size   */
                    acq_nof_mem_regions,        /*acq_nof_mem_regions   */
                    targetB,            /*target                */
                    3);                 /*nof_xmem_buffers      */
        if (error != INPUT_SYSTEM_ERR_NO_ERROR)
                return error;

        error = input_system_csi_xmem_channel_cfg(
                    1,                  /*ch_id                 */
                    INPUT_SYSTEM_PORT_B,        /*port                  */
                    backend_ch0,                /*backend_ch            */
                    16,                 /*mem_region_size       */
                    3,                  /*nof_mem_regions       */
                    acq_mem_region_size,        /*acq_mem_region_size   */
                    acq_nof_mem_regions,        /*acq_nof_mem_regions   */
                    targetB,            /*target                */
                    3);                 /*nof_xmem_buffers      */
        if (error != INPUT_SYSTEM_ERR_NO_ERROR)
                return error;

        error = input_system_csi_xmem_channel_cfg(
                    2,                  /*ch_id                 */
                    INPUT_SYSTEM_PORT_C,        /*port                  */
                    backend_ch1,                /*backend_ch            */
                    32,                 /*mem_region_size       */
                    3,                  /*nof_mem_regions       */
                    acq_mem_region_size,        /*acq_mem_region_size   */
                    acq_nof_mem_regions,        /*acq_nof_mem_regions   */
                    targetC,            /*target                */
                    2);                 /*nof_xmem_buffers      */
        if (error != INPUT_SYSTEM_ERR_NO_ERROR)
                return error;

        error = input_system_configuration_commit();

        return error;
}

static input_system_err_t ia_css_isys_2401_init(void)
{
        ia_css_isys_csi_rx_lut_rmgr_init();
        ia_css_isys_ibuf_rmgr_init();
        ia_css_isys_dma_channel_rmgr_init();
        ia_css_isys_stream2mmio_sid_rmgr_init();

        isys2401_dma_set_max_burst_size(ISYS2401_DMA0_ID,
                                        1 /* Non Burst DMA transactions */);

        /* Enable 2401 input system IRQ status for driver to retrieve */
        isys_irqc_status_enable(ISYS_IRQ0_ID);
        isys_irqc_status_enable(ISYS_IRQ1_ID);
        isys_irqc_status_enable(ISYS_IRQ2_ID);

        return INPUT_SYSTEM_ERR_NO_ERROR;
}

input_system_err_t ia_css_isys_init(void)
{
        if (IS_ISP2401)
                return ia_css_isys_2401_init();

        return ia_css_isys_2400_init();
}

void ia_css_isys_uninit(void)
{
        if (IS_ISP2401) {
                ia_css_isys_csi_rx_lut_rmgr_uninit();
                ia_css_isys_ibuf_rmgr_uninit();
                ia_css_isys_dma_channel_rmgr_uninit();
                ia_css_isys_stream2mmio_sid_rmgr_uninit();
        }
}