/*
 * (C) Copyright 2010
 * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <command.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm/ppc4xx-gpio.h>

#include <gdsys_fpga.h>

#include "../common/osd.h"

enum {
        UNITTYPE_MAIN_SERVER = 0,
        UNITTYPE_MAIN_USER = 1,
        UNITTYPE_VIDEO_SERVER = 2,
        UNITTYPE_VIDEO_USER = 3,
};

enum {
        HWVER_100 = 0,
        HWVER_104 = 1,
        HWVER_110 = 2,
};

enum {
        COMPRESSION_NONE = 0,
        COMPRESSION_TYPE1_DELTA,
};

enum {
        AUDIO_NONE = 0,
        AUDIO_TX = 1,
        AUDIO_RX = 2,
        AUDIO_RXTX = 3,
};

enum {
        SYSCLK_147456 = 0,
};

enum {
        RAM_DDR2_32 = 0,
};

/*
 * Check Board Identity:
 */
int checkboard(void)
{
        ihs_fpga_t *fpga = (ihs_fpga_t *) CONFIG_SYS_FPGA_BASE(0);
        char *s = getenv("serial#");
        u16 versions = in_le16(&fpga->versions);
        u16 fpga_version = in_le16(&fpga->fpga_version);
        u16 fpga_features = in_le16(&fpga->fpga_features);
        unsigned unit_type;
        unsigned hardware_version;
        unsigned feature_compression;
        unsigned feature_osd;
        unsigned feature_audio;
        unsigned feature_sysclock;
        unsigned feature_ramconfig;
        unsigned feature_carriers;
        unsigned feature_video_channels;

        unit_type = (versions & 0xf000) >> 12;
        hardware_version = versions & 0x000f;
        feature_compression = (fpga_features & 0xe000) >> 13;
        feature_osd = fpga_features & (1<<11);
        feature_audio = (fpga_features & 0x0600) >> 9;
        feature_sysclock = (fpga_features & 0x0180) >> 7;
        feature_ramconfig = (fpga_features & 0x0060) >> 5;
        feature_carriers = (fpga_features & 0x000c) >> 2;
        feature_video_channels = fpga_features & 0x0003;

        printf("Board: ");

        printf("IoCon");

        if (s != NULL) {
                puts(", serial# ");
                puts(s);
        }
        puts("\n       ");

        switch (unit_type) {
        case UNITTYPE_MAIN_USER:
                printf("Mainchannel");
                break;

        case UNITTYPE_VIDEO_USER:
                printf("Videochannel");
                break;

        default:
                printf("UnitType %d(not supported)", unit_type);
                break;
        }

        switch (hardware_version) {
        case HWVER_100:
                printf(" HW-Ver 1.00\n");
                break;

        case HWVER_104:
                printf(" HW-Ver 1.04\n");
                break;

        case HWVER_110:
                printf(" HW-Ver 1.10\n");
                break;

        default:
                printf(" HW-Ver %d(not supported)\n",
                       hardware_version);
                break;
        }

        printf("       FPGA V %d.%02d, features:",
                fpga_version / 100, fpga_version % 100);


        switch (feature_compression) {
        case COMPRESSION_NONE:
                printf(" no compression");
                break;

        case COMPRESSION_TYPE1_DELTA:
                printf(" type1-deltacompression");
                break;

        default:
                printf(" compression %d(not supported)", feature_compression);
                break;
        }

        printf(", %sosd", feature_osd ? "" : "no ");

        switch (feature_audio) {
        case AUDIO_NONE:
                printf(", no audio");
                break;

        case AUDIO_TX:
                printf(", audio tx");
                break;

        case AUDIO_RX:
                printf(", audio rx");
                break;

        case AUDIO_RXTX:
                printf(", audio rx+tx");
                break;

        default:
                printf(", audio %d(not supported)", feature_audio);
                break;
        }

        puts(",\n       ");

        switch (feature_sysclock) {
        case SYSCLK_147456:
                printf("clock 147.456 MHz");
                break;

        default:
                printf("clock %d(not supported)", feature_sysclock);
                break;
        }

        switch (feature_ramconfig) {
        case RAM_DDR2_32:
                printf(", RAM 32 bit DDR2");
                break;

        default:
                printf(", RAM %d(not supported)", feature_ramconfig);
                break;
        }

        printf(", %d carrier(s)", feature_carriers);

        printf(", %d video channel(s)\n", feature_video_channels);

        return 0;
}

int last_stage_init(void)
{
        return osd_probe(0);
}

/*
 * provide access to fpga gpios (for I2C bitbang)
 */
void fpga_gpio_set(int pin)
{
        out_le16((void *)(CONFIG_SYS_FPGA0_BASE + 0x18), pin);
}

void fpga_gpio_clear(int pin)
{
        out_le16((void *)(CONFIG_SYS_FPGA0_BASE + 0x16), pin);
}

int fpga_gpio_get(int pin)
{
        return in_le16((void *)(CONFIG_SYS_FPGA0_BASE + 0x14)) & pin;
}