saa7164-api.c

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/*
 *  Driver for the NXP SAA7164 PCIe bridge
 *
 *  Copyright (c) 2010 Steven Toth <[email protected]>
 *
 *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/wait.h>
#include <linux/slab.h>

#include "saa7164.h"

int saa7164_api_get_load_info(struct saa7164_dev *dev, struct tmFwInfoStruct *i)
{
    int ret;

    if (!(saa_debug & DBGLVL_CPU))
        return 0;

    dprintk(DBGLVL_API, "%s()\n", __func__);

    i->deviceinst = 0;
    i->devicespec = 0;
    i->mode = 0;
    i->status = 0;

    ret = saa7164_cmd_send(dev, 0, GET_CUR,
        GET_FW_STATUS_CONTROL, sizeof(struct tmFwInfoStruct), i);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    printk(KERN_INFO "saa7164[%d]-CPU: %d percent", dev->nr, i->CPULoad);

    return ret;
}

int saa7164_api_collect_debug(struct saa7164_dev *dev)
{
    struct tmComResDebugGetData d;
    u8 more = 255;
    int ret;

    dprintk(DBGLVL_API, "%s()\n", __func__);

    while (more--) {

        memset(&d, 0, sizeof(d));

        ret = saa7164_cmd_send(dev, 0, GET_CUR,
            GET_DEBUG_DATA_CONTROL, sizeof(d), &d);
        if (ret != SAA_OK)
            printk(KERN_ERR "%s() error, ret = 0x%x\n",
                __func__, ret);

        if (d.dwResult != SAA_OK)
            break;

        printk(KERN_INFO "saa7164[%d]-FWMSG: %s", dev->nr,
            d.ucDebugData);
    }

    return 0;
}

int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level)
{
    struct tmComResDebugSetLevel lvl;
    int ret;

    dprintk(DBGLVL_API, "%s(level=%d)\n", __func__, level);

    /* Retrieve current state */
    ret = saa7164_cmd_send(dev, 0, GET_CUR,
        SET_DEBUG_LEVEL_CONTROL, sizeof(lvl), &lvl);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    dprintk(DBGLVL_API, "%s() Was %d\n", __func__, lvl.dwDebugLevel);

    lvl.dwDebugLevel = level;

    /* set new state */
    ret = saa7164_cmd_send(dev, 0, SET_CUR,
        SET_DEBUG_LEVEL_CONTROL, sizeof(lvl), &lvl);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    return ret;
}

int saa7164_api_set_vbi_format(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    struct tmComResProbeCommit fmt, rsp;
    int ret;

    dprintk(DBGLVL_API, "%s(nr=%d, unitid=0x%x)\n", __func__,
        port->nr, port->hwcfg.unitid);

    fmt.bmHint = 0;
    fmt.bFormatIndex = 1;
    fmt.bFrameIndex = 1;

    /* Probe, see if it can support this format */
    ret = saa7164_cmd_send(port->dev, port->hwcfg.unitid,
        SET_CUR, SAA_PROBE_CONTROL, sizeof(fmt), &fmt);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() set error, ret = 0x%x\n", __func__, ret);

    /* See of the format change was successful */
    ret = saa7164_cmd_send(port->dev, port->hwcfg.unitid,
        GET_CUR, SAA_PROBE_CONTROL, sizeof(rsp), &rsp);
    if (ret != SAA_OK) {
        printk(KERN_ERR "%s() get error, ret = 0x%x\n", __func__, ret);
    } else {
        /* Compare requested vs received, should be same */
        if (memcmp(&fmt, &rsp, sizeof(rsp)) == 0) {
            dprintk(DBGLVL_API, "SET/PROBE Verified\n");

            /* Ask the device to select the negotiated format */
            ret = saa7164_cmd_send(port->dev, port->hwcfg.unitid,
                SET_CUR, SAA_COMMIT_CONTROL, sizeof(fmt), &fmt);
            if (ret != SAA_OK)
                printk(KERN_ERR "%s() commit error, ret = 0x%x\n",
                    __func__, ret);

            ret = saa7164_cmd_send(port->dev, port->hwcfg.unitid,
                GET_CUR, SAA_COMMIT_CONTROL, sizeof(rsp), &rsp);
            if (ret != SAA_OK)
                printk(KERN_ERR "%s() GET commit error, ret = 0x%x\n",
                    __func__, ret);

            if (memcmp(&fmt, &rsp, sizeof(rsp)) != 0) {
                printk(KERN_ERR "%s() memcmp error, ret = 0x%x\n",
                    __func__, ret);
            } else
                dprintk(DBGLVL_API, "SET/COMMIT Verified\n");

            dprintk(DBGLVL_API, "rsp.bmHint = 0x%x\n", rsp.bmHint);
            dprintk(DBGLVL_API, "rsp.bFormatIndex = 0x%x\n",
                rsp.bFormatIndex);
            dprintk(DBGLVL_API, "rsp.bFrameIndex = 0x%x\n",
                rsp.bFrameIndex);
        } else
            printk(KERN_ERR "%s() compare failed\n", __func__);
    }

    if (ret == SAA_OK)
        dprintk(DBGLVL_API, "%s(nr=%d) Success\n", __func__, port->nr);

    return ret;
}

int saa7164_api_set_gop_size(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    struct tmComResEncVideoGopStructure gs;
    int ret;

    dprintk(DBGLVL_ENC, "%s()\n", __func__);

    gs.ucRefFrameDist = port->encoder_params.refdist;
    gs.ucGOPSize = port->encoder_params.gop_size;
    ret = saa7164_cmd_send(port->dev, port->hwcfg.sourceid, SET_CUR,
        EU_VIDEO_GOP_STRUCTURE_CONTROL,
        sizeof(gs), &gs);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    return ret;
}

int saa7164_api_set_encoder(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    struct tmComResEncVideoBitRate vb;
    struct tmComResEncAudioBitRate ab;
    int ret;

    dprintk(DBGLVL_ENC, "%s() unitid=0x%x\n", __func__,
        port->hwcfg.sourceid);

    if (port->encoder_params.stream_type == V4L2_MPEG_STREAM_TYPE_MPEG2_PS)
        port->encoder_profile = EU_PROFILE_PS_DVD;
    else
        port->encoder_profile = EU_PROFILE_TS_HQ;

    ret = saa7164_cmd_send(port->dev, port->hwcfg.sourceid, SET_CUR,
        EU_PROFILE_CONTROL, sizeof(u8), &port->encoder_profile);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    /* Resolution */
    ret = saa7164_cmd_send(port->dev, port->hwcfg.sourceid, SET_CUR,
        EU_PROFILE_CONTROL, sizeof(u8), &port->encoder_profile);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    /* Establish video bitrates */
    if (port->encoder_params.bitrate_mode ==
        V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
        vb.ucVideoBitRateMode = EU_VIDEO_BIT_RATE_MODE_CONSTANT;
    else
        vb.ucVideoBitRateMode = EU_VIDEO_BIT_RATE_MODE_VARIABLE_PEAK;
    vb.dwVideoBitRate = port->encoder_params.bitrate;
    vb.dwVideoBitRatePeak = port->encoder_params.bitrate_peak;
    ret = saa7164_cmd_send(port->dev, port->hwcfg.sourceid, SET_CUR,
        EU_VIDEO_BIT_RATE_CONTROL,
        sizeof(struct tmComResEncVideoBitRate),
        &vb);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    /* Establish audio bitrates */
    ab.ucAudioBitRateMode = 0;
    ab.dwAudioBitRate = 384000;
    ab.dwAudioBitRatePeak = ab.dwAudioBitRate;
    ret = saa7164_cmd_send(port->dev, port->hwcfg.sourceid, SET_CUR,
        EU_AUDIO_BIT_RATE_CONTROL,
        sizeof(struct tmComResEncAudioBitRate),
        &ab);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__,
            ret);

    saa7164_api_set_aspect_ratio(port);
    saa7164_api_set_gop_size(port);

    return ret;
}

int saa7164_api_get_encoder(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    struct tmComResEncVideoBitRate v;
    struct tmComResEncAudioBitRate a;
    struct tmComResEncVideoInputAspectRatio ar;
    int ret;

    dprintk(DBGLVL_ENC, "%s() unitid=0x%x\n", __func__,
        port->hwcfg.sourceid);

    port->encoder_profile = 0;
    port->video_format = 0;
    port->video_resolution = 0;
    port->audio_format = 0;

    ret = saa7164_cmd_send(port->dev, port->hwcfg.sourceid, GET_CUR,
        EU_PROFILE_CONTROL, sizeof(u8), &port->encoder_profile);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    ret = saa7164_cmd_send(port->dev, port->hwcfg.sourceid, GET_CUR,
        EU_VIDEO_RESOLUTION_CONTROL, sizeof(u8),
        &port->video_resolution);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    ret = saa7164_cmd_send(port->dev, port->hwcfg.sourceid, GET_CUR,
        EU_VIDEO_FORMAT_CONTROL, sizeof(u8), &port->video_format);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    ret = saa7164_cmd_send(port->dev, port->hwcfg.sourceid, GET_CUR,
        EU_VIDEO_BIT_RATE_CONTROL, sizeof(v), &v);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    ret = saa7164_cmd_send(port->dev, port->hwcfg.sourceid, GET_CUR,
        EU_AUDIO_FORMAT_CONTROL, sizeof(u8), &port->audio_format);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    ret = saa7164_cmd_send(port->dev, port->hwcfg.sourceid, GET_CUR,
        EU_AUDIO_BIT_RATE_CONTROL, sizeof(a), &a);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    /* Aspect Ratio */
    ar.width = 0;
    ar.height = 0;
    ret = saa7164_cmd_send(port->dev, port->hwcfg.sourceid, GET_CUR,
        EU_VIDEO_INPUT_ASPECT_CONTROL,
        sizeof(struct tmComResEncVideoInputAspectRatio), &ar);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    dprintk(DBGLVL_ENC, "encoder_profile = %d\n", port->encoder_profile);
    dprintk(DBGLVL_ENC, "video_format    = %d\n", port->video_format);
    dprintk(DBGLVL_ENC, "audio_format    = %d\n", port->audio_format);
    dprintk(DBGLVL_ENC, "video_resolution= %d\n", port->video_resolution);
    dprintk(DBGLVL_ENC, "v.ucVideoBitRateMode = %d\n",
        v.ucVideoBitRateMode);
    dprintk(DBGLVL_ENC, "v.dwVideoBitRate     = %d\n",
        v.dwVideoBitRate);
    dprintk(DBGLVL_ENC, "v.dwVideoBitRatePeak = %d\n",
        v.dwVideoBitRatePeak);
    dprintk(DBGLVL_ENC, "a.ucVideoBitRateMode = %d\n",
        a.ucAudioBitRateMode);
    dprintk(DBGLVL_ENC, "a.dwVideoBitRate     = %d\n",
        a.dwAudioBitRate);
    dprintk(DBGLVL_ENC, "a.dwVideoBitRatePeak = %d\n",
        a.dwAudioBitRatePeak);
    dprintk(DBGLVL_ENC, "aspect.width / height = %d:%d\n",
        ar.width, ar.height);

    return ret;
}

int saa7164_api_set_aspect_ratio(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    struct tmComResEncVideoInputAspectRatio ar;
    int ret;

    dprintk(DBGLVL_ENC, "%s(%d)\n", __func__,
        port->encoder_params.ctl_aspect);

    switch (port->encoder_params.ctl_aspect) {
    case V4L2_MPEG_VIDEO_ASPECT_1x1:
        ar.width = 1;
        ar.height = 1;
        break;
    case V4L2_MPEG_VIDEO_ASPECT_4x3:
        ar.width = 4;
        ar.height = 3;
        break;
    case V4L2_MPEG_VIDEO_ASPECT_16x9:
        ar.width = 16;
        ar.height = 9;
        break;
    case V4L2_MPEG_VIDEO_ASPECT_221x100:
        ar.width = 221;
        ar.height = 100;
        break;
    default:
        BUG();
    }

    dprintk(DBGLVL_ENC, "%s(%d) now %d:%d\n", __func__,
        port->encoder_params.ctl_aspect,
        ar.width, ar.height);

    /* Aspect Ratio */
    ret = saa7164_cmd_send(port->dev, port->hwcfg.sourceid, SET_CUR,
        EU_VIDEO_INPUT_ASPECT_CONTROL,
        sizeof(struct tmComResEncVideoInputAspectRatio), &ar);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    return ret;
}

int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl)
{
    struct saa7164_dev *dev = port->dev;
    int ret;
    u16 val;

    if (ctl == PU_BRIGHTNESS_CONTROL)
        val = port->ctl_brightness;
    else
    if (ctl == PU_CONTRAST_CONTROL)
        val = port->ctl_contrast;
    else
    if (ctl == PU_HUE_CONTROL)
        val = port->ctl_hue;
    else
    if (ctl == PU_SATURATION_CONTROL)
        val = port->ctl_saturation;
    else
    if (ctl == PU_SHARPNESS_CONTROL)
        val = port->ctl_sharpness;
    else
        return -EINVAL;

    dprintk(DBGLVL_ENC, "%s() unitid=0x%x ctl=%d, val=%d\n",
        __func__, port->encunit.vsourceid, ctl, val);

    ret = saa7164_cmd_send(port->dev, port->encunit.vsourceid, SET_CUR,
        ctl, sizeof(u16), &val);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    return ret;
}

int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl)
{
    struct saa7164_dev *dev = port->dev;
    int ret;
    u16 val;

    ret = saa7164_cmd_send(port->dev, port->encunit.vsourceid, GET_CUR,
        ctl, sizeof(u16), &val);
    if (ret != SAA_OK) {
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);
        return ret;
    }

    dprintk(DBGLVL_ENC, "%s() ctl=%d, val=%d\n",
        __func__, ctl, val);

    if (ctl == PU_BRIGHTNESS_CONTROL)
        port->ctl_brightness = val;
    else
    if (ctl == PU_CONTRAST_CONTROL)
        port->ctl_contrast = val;
    else
    if (ctl == PU_HUE_CONTROL)
        port->ctl_hue = val;
    else
    if (ctl == PU_SATURATION_CONTROL)
        port->ctl_saturation = val;
    else
    if (ctl == PU_SHARPNESS_CONTROL)
        port->ctl_sharpness = val;

    return ret;
}

int saa7164_api_set_videomux(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    u8 inputs[] = { 1, 2, 2, 2, 5, 5, 5 };
    int ret;

    dprintk(DBGLVL_ENC, "%s() v_mux=%d a_mux=%d\n",
        __func__, port->mux_input, inputs[port->mux_input - 1]);

    /* Audio Mute */
    ret = saa7164_api_audio_mute(port, 1);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    /* Video Mux */
    ret = saa7164_cmd_send(port->dev, port->vidproc.sourceid, SET_CUR,
        SU_INPUT_SELECT_CONTROL, sizeof(u8), &port->mux_input);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    /* Audio Mux */
    ret = saa7164_cmd_send(port->dev, port->audfeat.sourceid, SET_CUR,
        SU_INPUT_SELECT_CONTROL, sizeof(u8),
        &inputs[port->mux_input - 1]);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    /* Audio UnMute */
    ret = saa7164_api_audio_mute(port, 0);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    return ret;
}

int saa7164_api_audio_mute(struct saa7164_port *port, int mute)
{
    struct saa7164_dev *dev = port->dev;
    u8 v = mute;
    int ret;

    dprintk(DBGLVL_API, "%s(%d)\n", __func__, mute);

    ret = saa7164_cmd_send(port->dev, port->audfeat.unitid, SET_CUR,
        MUTE_CONTROL, sizeof(u8), &v);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    return ret;
}

/* 0 = silence, 0xff = full */
int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level)
{
    struct saa7164_dev *dev = port->dev;
    s16 v, min, max;
    int ret;

    dprintk(DBGLVL_API, "%s(%d)\n", __func__, level);

    /* Obtain the min/max ranges */
    ret = saa7164_cmd_send(port->dev, port->audfeat.unitid, GET_MIN,
        VOLUME_CONTROL, sizeof(u16), &min);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    ret = saa7164_cmd_send(port->dev, port->audfeat.unitid, GET_MAX,
        VOLUME_CONTROL, sizeof(u16), &max);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    ret = saa7164_cmd_send(port->dev, port->audfeat.unitid, GET_CUR,
        (0x01 << 8) | VOLUME_CONTROL, sizeof(u16), &v);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    dprintk(DBGLVL_API, "%s(%d) min=%d max=%d cur=%d\n", __func__,
        level, min, max, v);

    v = level;
    if (v < min)
        v = min;
    if (v > max)
        v = max;

    /* Left */
    ret = saa7164_cmd_send(port->dev, port->audfeat.unitid, SET_CUR,
        (0x01 << 8) | VOLUME_CONTROL, sizeof(s16), &v);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    /* Right */
    ret = saa7164_cmd_send(port->dev, port->audfeat.unitid, SET_CUR,
        (0x02 << 8) | VOLUME_CONTROL, sizeof(s16), &v);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    ret = saa7164_cmd_send(port->dev, port->audfeat.unitid, GET_CUR,
        (0x01 << 8) | VOLUME_CONTROL, sizeof(u16), &v);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    dprintk(DBGLVL_API, "%s(%d) min=%d max=%d cur=%d\n", __func__,
        level, min, max, v);

    return ret;
}

int saa7164_api_set_audio_std(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    struct tmComResAudioDefaults lvl;
    struct tmComResTunerStandard tvaudio;
    int ret;

    dprintk(DBGLVL_API, "%s()\n", __func__);

    /* Establish default levels */
    lvl.ucDecoderLevel = TMHW_LEV_ADJ_DECLEV_DEFAULT;
    lvl.ucDecoderFM_Level = TMHW_LEV_ADJ_DECLEV_DEFAULT;
    lvl.ucMonoLevel = TMHW_LEV_ADJ_MONOLEV_DEFAULT;
    lvl.ucNICAM_Level = TMHW_LEV_ADJ_NICLEV_DEFAULT;
    lvl.ucSAP_Level = TMHW_LEV_ADJ_SAPLEV_DEFAULT;
    lvl.ucADC_Level = TMHW_LEV_ADJ_ADCLEV_DEFAULT;
    ret = saa7164_cmd_send(port->dev, port->audfeat.unitid, SET_CUR,
        AUDIO_DEFAULT_CONTROL, sizeof(struct tmComResAudioDefaults),
        &lvl);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    /* Manually select the appropriate TV audio standard */
    if (port->encodernorm.id & V4L2_STD_NTSC) {
        tvaudio.std = TU_STANDARD_NTSC_M;
        tvaudio.country = 1;
    } else {
        tvaudio.std = TU_STANDARD_PAL_I;
        tvaudio.country = 44;
    }

    ret = saa7164_cmd_send(port->dev, port->tunerunit.unitid, SET_CUR,
        TU_STANDARD_CONTROL, sizeof(tvaudio), &tvaudio);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() TU_STANDARD_CONTROL error, ret = 0x%x\n",
            __func__, ret);
    return ret;
}

int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect)
{
    struct saa7164_dev *dev = port->dev;
    struct tmComResTunerStandardAuto p;
    int ret;

    dprintk(DBGLVL_API, "%s(%d)\n", __func__, autodetect);

    /* Disable TV Audio autodetect if not already set (buggy) */
    if (autodetect)
        p.mode = TU_STANDARD_AUTO;
    else
        p.mode = TU_STANDARD_MANUAL;
    ret = saa7164_cmd_send(port->dev, port->tunerunit.unitid, SET_CUR,
        TU_STANDARD_AUTO_CONTROL, sizeof(p), &p);
    if (ret != SAA_OK)
        printk(KERN_ERR
            "%s() TU_STANDARD_AUTO_CONTROL error, ret = 0x%x\n",
            __func__, ret);

    return ret;
}

int saa7164_api_get_videomux(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    int ret;

    ret = saa7164_cmd_send(port->dev, port->vidproc.sourceid, GET_CUR,
        SU_INPUT_SELECT_CONTROL, sizeof(u8), &port->mux_input);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    dprintk(DBGLVL_ENC, "%s() v_mux=%d\n",
        __func__, port->mux_input);

    return ret;
}

int saa7164_api_set_dif(struct saa7164_port *port, u8 reg, u8 val)
{
    struct saa7164_dev *dev = port->dev;

    u16 len = 0;
    u8 buf[256];
    int ret;
    u8 mas;

    dprintk(DBGLVL_API, "%s(nr=%d type=%d val=%x)\n", __func__,
        port->nr, port->type, val);

    if (port->nr == 0)
        mas = 0xd0;
    else
        mas = 0xe0;

    memset(buf, 0, sizeof(buf));

    buf[0x00] = 0x04;
    buf[0x01] = 0x00;
    buf[0x02] = 0x00;
    buf[0x03] = 0x00;

    buf[0x04] = 0x04;
    buf[0x05] = 0x00;
    buf[0x06] = 0x00;
    buf[0x07] = 0x00;

    buf[0x08] = reg;
    buf[0x09] = 0x26;
    buf[0x0a] = mas;
    buf[0x0b] = 0xb0;

    buf[0x0c] = val;
    buf[0x0d] = 0x00;
    buf[0x0e] = 0x00;
    buf[0x0f] = 0x00;

    ret = saa7164_cmd_send(dev, port->ifunit.unitid, GET_LEN,
        EXU_REGISTER_ACCESS_CONTROL, sizeof(len), &len);
    if (ret != SAA_OK) {
        printk(KERN_ERR "%s() error, ret(1) = 0x%x\n", __func__, ret);
        return -EIO;
    }

    ret = saa7164_cmd_send(dev, port->ifunit.unitid, SET_CUR,
        EXU_REGISTER_ACCESS_CONTROL, len, &buf);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret(2) = 0x%x\n", __func__, ret);
#if 0
    print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1, buf, 16,
               false);
#endif
    return ret == SAA_OK ? 0 : -EIO;
}

/* Disable the IF block AGC controls */
int saa7164_api_configure_dif(struct saa7164_port *port, u32 std)
{
    struct saa7164_dev *dev = port->dev;
    int ret = 0;
    u8 agc_disable;

    dprintk(DBGLVL_API, "%s(nr=%d, 0x%x)\n", __func__, port->nr, std);

    if (std & V4L2_STD_NTSC) {
        dprintk(DBGLVL_API, " NTSC\n");
        saa7164_api_set_dif(port, 0x00, 0x01); /* Video Standard */
        agc_disable = 0;
    } else if (std & V4L2_STD_PAL_I) {
        dprintk(DBGLVL_API, " PAL-I\n");
        saa7164_api_set_dif(port, 0x00, 0x08); /* Video Standard */
        agc_disable = 0;
    } else if (std & V4L2_STD_PAL_M) {
        dprintk(DBGLVL_API, " PAL-M\n");
        saa7164_api_set_dif(port, 0x00, 0x01); /* Video Standard */
        agc_disable = 0;
    } else if (std & V4L2_STD_PAL_N) {
        dprintk(DBGLVL_API, " PAL-N\n");
        saa7164_api_set_dif(port, 0x00, 0x01); /* Video Standard */
        agc_disable = 0;
    } else if (std & V4L2_STD_PAL_Nc) {
        dprintk(DBGLVL_API, " PAL-Nc\n");
        saa7164_api_set_dif(port, 0x00, 0x01); /* Video Standard */
        agc_disable = 0;
    } else if (std & V4L2_STD_PAL_B) {
        dprintk(DBGLVL_API, " PAL-B\n");
        saa7164_api_set_dif(port, 0x00, 0x02); /* Video Standard */
        agc_disable = 0;
    } else if (std & V4L2_STD_PAL_DK) {
        dprintk(DBGLVL_API, " PAL-DK\n");
        saa7164_api_set_dif(port, 0x00, 0x10); /* Video Standard */
        agc_disable = 0;
    } else if (std & V4L2_STD_SECAM_L) {
        dprintk(DBGLVL_API, " SECAM-L\n");
        saa7164_api_set_dif(port, 0x00, 0x20); /* Video Standard */
        agc_disable = 0;
    } else {
        /* Unknown standard, assume DTV */
        dprintk(DBGLVL_API, " Unknown (assuming DTV)\n");
        /* Undefinded Video Standard */
        saa7164_api_set_dif(port, 0x00, 0x80);
        agc_disable = 1;
    }

    saa7164_api_set_dif(port, 0x48, 0xa0); /* AGC Functions 1 */
    saa7164_api_set_dif(port, 0xc0, agc_disable); /* AGC Output Disable */
    saa7164_api_set_dif(port, 0x7c, 0x04); /* CVBS EQ */
    saa7164_api_set_dif(port, 0x04, 0x01); /* Active */
    msleep(100);
    saa7164_api_set_dif(port, 0x04, 0x00); /* Active (again) */
    msleep(100);

    return ret;
}

/* Ensure the dif is in the correct state for the operating mode
 * (analog / dtv). We only configure the diff through the analog encoder
 * so when we're in digital mode we need to find the appropriate encoder
 * and use it to configure the DIF.
 */
int saa7164_api_initialize_dif(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    struct saa7164_port *p = NULL;
    int ret = -EINVAL;
    u32 std = 0;

    dprintk(DBGLVL_API, "%s(nr=%d type=%d)\n", __func__,
        port->nr, port->type);

    if (port->type == SAA7164_MPEG_ENCODER) {
        /* Pick any analog standard to init the diff.
         * we'll come back during encoder_init'
         * and set the correct standard if requried.
         */
        std = V4L2_STD_NTSC;
    } else
    if (port->type == SAA7164_MPEG_DVB) {
        if (port->nr == SAA7164_PORT_TS1)
            p = &dev->ports[SAA7164_PORT_ENC1];
        else
            p = &dev->ports[SAA7164_PORT_ENC2];
    } else
    if (port->type == SAA7164_MPEG_VBI) {
        std = V4L2_STD_NTSC;
        if (port->nr == SAA7164_PORT_VBI1)
            p = &dev->ports[SAA7164_PORT_ENC1];
        else
            p = &dev->ports[SAA7164_PORT_ENC2];
    } else
        BUG();

    if (p)
        ret = saa7164_api_configure_dif(p, std);

    return ret;
}

int saa7164_api_transition_port(struct saa7164_port *port, u8 mode)
{
    struct saa7164_dev *dev = port->dev;

    int ret;

    dprintk(DBGLVL_API, "%s(nr=%d unitid=0x%x,%d)\n",
        __func__, port->nr, port->hwcfg.unitid, mode);

    ret = saa7164_cmd_send(port->dev, port->hwcfg.unitid, SET_CUR,
        SAA_STATE_CONTROL, sizeof(mode), &mode);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s(portnr %d unitid 0x%x) error, ret = 0x%x\n",
            __func__, port->nr, port->hwcfg.unitid, ret);

    return ret;
}

int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version)
{
    int ret;

    ret = saa7164_cmd_send(dev, 0, GET_CUR,
        GET_FW_VERSION_CONTROL, sizeof(u32), version);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    return ret;
}

int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen)
{
    u8 reg[] = { 0x0f, 0x00 };

    if (buflen < 128)
        return -ENOMEM;

    /* Assumption: Hauppauge eeprom is at 0xa0 on on bus 0 */
    /* TODO: Pull the details from the boards struct */
    return saa7164_api_i2c_read(&dev->i2c_bus[0], 0xa0 >> 1, sizeof(reg),
        &reg[0], 128, buf);
}

int saa7164_api_configure_port_vbi(struct saa7164_dev *dev,
    struct saa7164_port *port)
{
    struct tmComResVBIFormatDescrHeader *fmt = &port->vbi_fmt_ntsc;

    dprintk(DBGLVL_API, "    bFormatIndex  = 0x%x\n", fmt->bFormatIndex);
    dprintk(DBGLVL_API, "    VideoStandard = 0x%x\n", fmt->VideoStandard);
    dprintk(DBGLVL_API, "    StartLine     = %d\n", fmt->StartLine);
    dprintk(DBGLVL_API, "    EndLine       = %d\n", fmt->EndLine);
    dprintk(DBGLVL_API, "    FieldRate     = %d\n", fmt->FieldRate);
    dprintk(DBGLVL_API, "    bNumLines     = %d\n", fmt->bNumLines);

    /* Cache the hardware configuration in the port */

    port->bufcounter = port->hwcfg.BARLocation;
    port->pitch = port->hwcfg.BARLocation + (2 * sizeof(u32));
    port->bufsize = port->hwcfg.BARLocation + (3 * sizeof(u32));
    port->bufoffset = port->hwcfg.BARLocation + (4 * sizeof(u32));
    port->bufptr32l = port->hwcfg.BARLocation +
        (4 * sizeof(u32)) +
        (sizeof(u32) * port->hwcfg.buffercount) + sizeof(u32);
    port->bufptr32h = port->hwcfg.BARLocation +
        (4 * sizeof(u32)) +
        (sizeof(u32) * port->hwcfg.buffercount);
    port->bufptr64 = port->hwcfg.BARLocation +
        (4 * sizeof(u32)) +
        (sizeof(u32) * port->hwcfg.buffercount);
    dprintk(DBGLVL_API, "   = port->hwcfg.BARLocation = 0x%x\n",
        port->hwcfg.BARLocation);

    dprintk(DBGLVL_API, "   = VS_FORMAT_VBI (becomes dev->en[%d])\n",
        port->nr);

    return 0;
}

int saa7164_api_configure_port_mpeg2ts(struct saa7164_dev *dev,
    struct saa7164_port *port,
    struct tmComResTSFormatDescrHeader *tsfmt)
{
    dprintk(DBGLVL_API, "    bFormatIndex = 0x%x\n", tsfmt->bFormatIndex);
    dprintk(DBGLVL_API, "    bDataOffset  = 0x%x\n", tsfmt->bDataOffset);
    dprintk(DBGLVL_API, "    bPacketLength= 0x%x\n", tsfmt->bPacketLength);
    dprintk(DBGLVL_API, "    bStrideLength= 0x%x\n", tsfmt->bStrideLength);
    dprintk(DBGLVL_API, "    bguid        = (....)\n");

    /* Cache the hardware configuration in the port */

    port->bufcounter = port->hwcfg.BARLocation;
    port->pitch = port->hwcfg.BARLocation + (2 * sizeof(u32));
    port->bufsize = port->hwcfg.BARLocation + (3 * sizeof(u32));
    port->bufoffset = port->hwcfg.BARLocation + (4 * sizeof(u32));
    port->bufptr32l = port->hwcfg.BARLocation +
        (4 * sizeof(u32)) +
        (sizeof(u32) * port->hwcfg.buffercount) + sizeof(u32);
    port->bufptr32h = port->hwcfg.BARLocation +
        (4 * sizeof(u32)) +
        (sizeof(u32) * port->hwcfg.buffercount);
    port->bufptr64 = port->hwcfg.BARLocation +
        (4 * sizeof(u32)) +
        (sizeof(u32) * port->hwcfg.buffercount);
    dprintk(DBGLVL_API, "   = port->hwcfg.BARLocation = 0x%x\n",
        port->hwcfg.BARLocation);

    dprintk(DBGLVL_API, "   = VS_FORMAT_MPEGTS (becomes dev->ts[%d])\n",
        port->nr);

    return 0;
}

int saa7164_api_configure_port_mpeg2ps(struct saa7164_dev *dev,
    struct saa7164_port *port,
    struct tmComResPSFormatDescrHeader *fmt)
{
    dprintk(DBGLVL_API, "    bFormatIndex = 0x%x\n", fmt->bFormatIndex);
    dprintk(DBGLVL_API, "    wPacketLength= 0x%x\n", fmt->wPacketLength);
    dprintk(DBGLVL_API, "    wPackLength=   0x%x\n", fmt->wPackLength);
    dprintk(DBGLVL_API, "    bPackDataType= 0x%x\n", fmt->bPackDataType);

    /* Cache the hardware configuration in the port */
    /* TODO: CHECK THIS in the port config */
    port->bufcounter = port->hwcfg.BARLocation;
    port->pitch = port->hwcfg.BARLocation + (2 * sizeof(u32));
    port->bufsize = port->hwcfg.BARLocation + (3 * sizeof(u32));
    port->bufoffset = port->hwcfg.BARLocation + (4 * sizeof(u32));
    port->bufptr32l = port->hwcfg.BARLocation +
        (4 * sizeof(u32)) +
        (sizeof(u32) * port->hwcfg.buffercount) + sizeof(u32);
    port->bufptr32h = port->hwcfg.BARLocation +
        (4 * sizeof(u32)) +
        (sizeof(u32) * port->hwcfg.buffercount);
    port->bufptr64 = port->hwcfg.BARLocation +
        (4 * sizeof(u32)) +
        (sizeof(u32) * port->hwcfg.buffercount);
    dprintk(DBGLVL_API, "   = port->hwcfg.BARLocation = 0x%x\n",
        port->hwcfg.BARLocation);

    dprintk(DBGLVL_API, "   = VS_FORMAT_MPEGPS (becomes dev->enc[%d])\n",
        port->nr);

    return 0;
}

int saa7164_api_dump_subdevs(struct saa7164_dev *dev, u8 *buf, int len)
{
    struct saa7164_port *tsport = NULL;
    struct saa7164_port *encport = NULL;
    struct saa7164_port *vbiport = NULL;
    u32 idx, next_offset;
    int i;
    struct tmComResDescrHeader *hdr, *t;
    struct tmComResExtDevDescrHeader *exthdr;
    struct tmComResPathDescrHeader *pathhdr;
    struct tmComResAntTermDescrHeader *anttermhdr;
    struct tmComResTunerDescrHeader *tunerunithdr;
    struct tmComResDMATermDescrHeader *vcoutputtermhdr;
    struct tmComResTSFormatDescrHeader *tsfmt;
    struct tmComResPSFormatDescrHeader *psfmt;
    struct tmComResSelDescrHeader *psel;
    struct tmComResProcDescrHeader *pdh;
    struct tmComResAFeatureDescrHeader *afd;
    struct tmComResEncoderDescrHeader *edh;
    struct tmComResVBIFormatDescrHeader *vbifmt;
    u32 currpath = 0;

    dprintk(DBGLVL_API,
        "%s(?,?,%d) sizeof(struct tmComResDescrHeader) = %d bytes\n",
        __func__, len, (u32)sizeof(struct tmComResDescrHeader));

    for (idx = 0; idx < (len - sizeof(struct tmComResDescrHeader));) {

        hdr = (struct tmComResDescrHeader *)(buf + idx);

        if (hdr->type != CS_INTERFACE)
            return SAA_ERR_NOT_SUPPORTED;

        dprintk(DBGLVL_API, "@ 0x%x =\n", idx);
        switch (hdr->subtype) {
        case GENERAL_REQUEST:
            dprintk(DBGLVL_API, " GENERAL_REQUEST\n");
            break;
        case VC_TUNER_PATH:
            dprintk(DBGLVL_API, " VC_TUNER_PATH\n");
            pathhdr = (struct tmComResPathDescrHeader *)(buf + idx);
            dprintk(DBGLVL_API, "  pathid = 0x%x\n",
                pathhdr->pathid);
            currpath = pathhdr->pathid;
            break;
        case VC_INPUT_TERMINAL:
            dprintk(DBGLVL_API, " VC_INPUT_TERMINAL\n");
            anttermhdr =
                (struct tmComResAntTermDescrHeader *)(buf + idx);
            dprintk(DBGLVL_API, "  terminalid   = 0x%x\n",
                anttermhdr->terminalid);
            dprintk(DBGLVL_API, "  terminaltype = 0x%x\n",
                anttermhdr->terminaltype);
            switch (anttermhdr->terminaltype) {
            case ITT_ANTENNA:
                dprintk(DBGLVL_API, "   = ITT_ANTENNA\n");
                break;
            case LINE_CONNECTOR:
                dprintk(DBGLVL_API, "   = LINE_CONNECTOR\n");
                break;
            case SPDIF_CONNECTOR:
                dprintk(DBGLVL_API, "   = SPDIF_CONNECTOR\n");
                break;
            case COMPOSITE_CONNECTOR:
                dprintk(DBGLVL_API,
                    "   = COMPOSITE_CONNECTOR\n");
                break;
            case SVIDEO_CONNECTOR:
                dprintk(DBGLVL_API, "   = SVIDEO_CONNECTOR\n");
                break;
            case COMPONENT_CONNECTOR:
                dprintk(DBGLVL_API,
                    "   = COMPONENT_CONNECTOR\n");
                break;
            case STANDARD_DMA:
                dprintk(DBGLVL_API, "   = STANDARD_DMA\n");
                break;
            default:
                dprintk(DBGLVL_API, "   = undefined (0x%x)\n",
                    anttermhdr->terminaltype);
            }
            dprintk(DBGLVL_API, "  assocterminal= 0x%x\n",
                anttermhdr->assocterminal);
            dprintk(DBGLVL_API, "  iterminal    = 0x%x\n",
                anttermhdr->iterminal);
            dprintk(DBGLVL_API, "  controlsize  = 0x%x\n",
                anttermhdr->controlsize);
            break;
        case VC_OUTPUT_TERMINAL:
            dprintk(DBGLVL_API, " VC_OUTPUT_TERMINAL\n");
            vcoutputtermhdr =
                (struct tmComResDMATermDescrHeader *)(buf + idx);
            dprintk(DBGLVL_API, "  unitid = 0x%x\n",
                vcoutputtermhdr->unitid);
            dprintk(DBGLVL_API, "  terminaltype = 0x%x\n",
                vcoutputtermhdr->terminaltype);
            switch (vcoutputtermhdr->terminaltype) {
            case ITT_ANTENNA:
                dprintk(DBGLVL_API, "   = ITT_ANTENNA\n");
                break;
            case LINE_CONNECTOR:
                dprintk(DBGLVL_API, "   = LINE_CONNECTOR\n");
                break;
            case SPDIF_CONNECTOR:
                dprintk(DBGLVL_API, "   = SPDIF_CONNECTOR\n");
                break;
            case COMPOSITE_CONNECTOR:
                dprintk(DBGLVL_API,
                    "   = COMPOSITE_CONNECTOR\n");
                break;
            case SVIDEO_CONNECTOR:
                dprintk(DBGLVL_API, "   = SVIDEO_CONNECTOR\n");
                break;
            case COMPONENT_CONNECTOR:
                dprintk(DBGLVL_API,
                    "   = COMPONENT_CONNECTOR\n");
                break;
            case STANDARD_DMA:
                dprintk(DBGLVL_API, "   = STANDARD_DMA\n");
                break;
            default:
                dprintk(DBGLVL_API, "   = undefined (0x%x)\n",
                    vcoutputtermhdr->terminaltype);
            }
            dprintk(DBGLVL_API, "  assocterminal= 0x%x\n",
                vcoutputtermhdr->assocterminal);
            dprintk(DBGLVL_API, "  sourceid     = 0x%x\n",
                vcoutputtermhdr->sourceid);
            dprintk(DBGLVL_API, "  iterminal    = 0x%x\n",
                vcoutputtermhdr->iterminal);
            dprintk(DBGLVL_API, "  BARLocation  = 0x%x\n",
                vcoutputtermhdr->BARLocation);
            dprintk(DBGLVL_API, "  flags        = 0x%x\n",
                vcoutputtermhdr->flags);
            dprintk(DBGLVL_API, "  interruptid  = 0x%x\n",
                vcoutputtermhdr->interruptid);
            dprintk(DBGLVL_API, "  buffercount  = 0x%x\n",
                vcoutputtermhdr->buffercount);
            dprintk(DBGLVL_API, "  metadatasize = 0x%x\n",
                vcoutputtermhdr->metadatasize);
            dprintk(DBGLVL_API, "  controlsize  = 0x%x\n",
                vcoutputtermhdr->controlsize);
            dprintk(DBGLVL_API, "  numformats   = 0x%x\n",
                vcoutputtermhdr->numformats);

            t = (struct tmComResDescrHeader *)
                ((struct tmComResDMATermDescrHeader *)(buf + idx));
            next_offset = idx + (vcoutputtermhdr->len);
            for (i = 0; i < vcoutputtermhdr->numformats; i++) {
                t = (struct tmComResDescrHeader *)
                    (buf + next_offset);
                switch (t->subtype) {
                case VS_FORMAT_MPEG2TS:
                    tsfmt =
                    (struct tmComResTSFormatDescrHeader *)t;
                    if (currpath == 1)
                        tsport = &dev->ports[SAA7164_PORT_TS1];
                    else
                        tsport = &dev->ports[SAA7164_PORT_TS2];
                    memcpy(&tsport->hwcfg, vcoutputtermhdr,
                        sizeof(*vcoutputtermhdr));
                    saa7164_api_configure_port_mpeg2ts(dev,
                        tsport, tsfmt);
                    break;
                case VS_FORMAT_MPEG2PS:
                    psfmt =
                    (struct tmComResPSFormatDescrHeader *)t;
                    if (currpath == 1)
                        encport = &dev->ports[SAA7164_PORT_ENC1];
                    else
                        encport = &dev->ports[SAA7164_PORT_ENC2];
                    memcpy(&encport->hwcfg, vcoutputtermhdr,
                        sizeof(*vcoutputtermhdr));
                    saa7164_api_configure_port_mpeg2ps(dev,
                        encport, psfmt);
                    break;
                case VS_FORMAT_VBI:
                    vbifmt =
                    (struct tmComResVBIFormatDescrHeader *)t;
                    if (currpath == 1)
                        vbiport = &dev->ports[SAA7164_PORT_VBI1];
                    else
                        vbiport = &dev->ports[SAA7164_PORT_VBI2];
                    memcpy(&vbiport->hwcfg, vcoutputtermhdr,
                        sizeof(*vcoutputtermhdr));
                    memcpy(&vbiport->vbi_fmt_ntsc, vbifmt,
                        sizeof(*vbifmt));
                    saa7164_api_configure_port_vbi(dev,
                        vbiport);
                    break;
                case VS_FORMAT_RDS:
                    dprintk(DBGLVL_API,
                        "   = VS_FORMAT_RDS\n");
                    break;
                case VS_FORMAT_UNCOMPRESSED:
                    dprintk(DBGLVL_API,
                    "   = VS_FORMAT_UNCOMPRESSED\n");
                    break;
                case VS_FORMAT_TYPE:
                    dprintk(DBGLVL_API,
                        "   = VS_FORMAT_TYPE\n");
                    break;
                default:
                    dprintk(DBGLVL_API,
                        "   = undefined (0x%x)\n",
                        t->subtype);
                }
                next_offset += t->len;
            }

            break;
        case TUNER_UNIT:
            dprintk(DBGLVL_API, " TUNER_UNIT\n");
            tunerunithdr =
                (struct tmComResTunerDescrHeader *)(buf + idx);
            dprintk(DBGLVL_API, "  unitid = 0x%x\n",
                tunerunithdr->unitid);
            dprintk(DBGLVL_API, "  sourceid = 0x%x\n",
                tunerunithdr->sourceid);
            dprintk(DBGLVL_API, "  iunit = 0x%x\n",
                tunerunithdr->iunit);
            dprintk(DBGLVL_API, "  tuningstandards = 0x%x\n",
                tunerunithdr->tuningstandards);
            dprintk(DBGLVL_API, "  controlsize = 0x%x\n",
                tunerunithdr->controlsize);
            dprintk(DBGLVL_API, "  controls = 0x%x\n",
                tunerunithdr->controls);

            if (tunerunithdr->unitid == tunerunithdr->iunit) {
                if (currpath == 1)
                    encport = &dev->ports[SAA7164_PORT_ENC1];
                else
                    encport = &dev->ports[SAA7164_PORT_ENC2];
                memcpy(&encport->tunerunit, tunerunithdr,
                    sizeof(struct tmComResTunerDescrHeader));
                dprintk(DBGLVL_API,
                    "  (becomes dev->enc[%d] tuner)\n",
                    encport->nr);
            }
            break;
        case VC_SELECTOR_UNIT:
            psel = (struct tmComResSelDescrHeader *)(buf + idx);
            dprintk(DBGLVL_API, " VC_SELECTOR_UNIT\n");
            dprintk(DBGLVL_API, "  unitid = 0x%x\n",
                psel->unitid);
            dprintk(DBGLVL_API, "  nrinpins = 0x%x\n",
                psel->nrinpins);
            dprintk(DBGLVL_API, "  sourceid = 0x%x\n",
                psel->sourceid);
            break;
        case VC_PROCESSING_UNIT:
            pdh = (struct tmComResProcDescrHeader *)(buf + idx);
            dprintk(DBGLVL_API, " VC_PROCESSING_UNIT\n");
            dprintk(DBGLVL_API, "  unitid = 0x%x\n",
                pdh->unitid);
            dprintk(DBGLVL_API, "  sourceid = 0x%x\n",
                pdh->sourceid);
            dprintk(DBGLVL_API, "  controlsize = 0x%x\n",
                pdh->controlsize);
            if (pdh->controlsize == 0x04) {
                if (currpath == 1)
                    encport = &dev->ports[SAA7164_PORT_ENC1];
                else
                    encport = &dev->ports[SAA7164_PORT_ENC2];
                memcpy(&encport->vidproc, pdh,
                    sizeof(struct tmComResProcDescrHeader));
                dprintk(DBGLVL_API, "  (becomes dev->enc[%d])\n",
                    encport->nr);
            }
            break;
        case FEATURE_UNIT:
            afd = (struct tmComResAFeatureDescrHeader *)(buf + idx);
            dprintk(DBGLVL_API, " FEATURE_UNIT\n");
            dprintk(DBGLVL_API, "  unitid = 0x%x\n",
                afd->unitid);
            dprintk(DBGLVL_API, "  sourceid = 0x%x\n",
                afd->sourceid);
            dprintk(DBGLVL_API, "  controlsize = 0x%x\n",
                afd->controlsize);
            if (currpath == 1)
                encport = &dev->ports[SAA7164_PORT_ENC1];
            else
                encport = &dev->ports[SAA7164_PORT_ENC2];
            memcpy(&encport->audfeat, afd,
                sizeof(struct tmComResAFeatureDescrHeader));
            dprintk(DBGLVL_API, "  (becomes dev->enc[%d])\n",
                encport->nr);
            break;
        case ENCODER_UNIT:
            edh = (struct tmComResEncoderDescrHeader *)(buf + idx);
            dprintk(DBGLVL_API, " ENCODER_UNIT\n");
            dprintk(DBGLVL_API, "  subtype = 0x%x\n", edh->subtype);
            dprintk(DBGLVL_API, "  unitid = 0x%x\n", edh->unitid);
            dprintk(DBGLVL_API, "  vsourceid = 0x%x\n",
            edh->vsourceid);
            dprintk(DBGLVL_API, "  asourceid = 0x%x\n",
                edh->asourceid);
            dprintk(DBGLVL_API, "  iunit = 0x%x\n", edh->iunit);
            if (edh->iunit == edh->unitid) {
                if (currpath == 1)
                    encport = &dev->ports[SAA7164_PORT_ENC1];
                else
                    encport = &dev->ports[SAA7164_PORT_ENC2];
                memcpy(&encport->encunit, edh,
                    sizeof(struct tmComResEncoderDescrHeader));
                dprintk(DBGLVL_API,
                    "  (becomes dev->enc[%d])\n",
                    encport->nr);
            }
            break;
        case EXTENSION_UNIT:
            dprintk(DBGLVL_API, " EXTENSION_UNIT\n");
            exthdr = (struct tmComResExtDevDescrHeader *)(buf + idx);
            dprintk(DBGLVL_API, "  unitid = 0x%x\n",
                exthdr->unitid);
            dprintk(DBGLVL_API, "  deviceid = 0x%x\n",
                exthdr->deviceid);
            dprintk(DBGLVL_API, "  devicetype = 0x%x\n",
                exthdr->devicetype);
            if (exthdr->devicetype & 0x1)
                dprintk(DBGLVL_API, "   = Decoder Device\n");
            if (exthdr->devicetype & 0x2)
                dprintk(DBGLVL_API, "   = GPIO Source\n");
            if (exthdr->devicetype & 0x4)
                dprintk(DBGLVL_API, "   = Video Decoder\n");
            if (exthdr->devicetype & 0x8)
                dprintk(DBGLVL_API, "   = Audio Decoder\n");
            if (exthdr->devicetype & 0x20)
                dprintk(DBGLVL_API, "   = Crossbar\n");
            if (exthdr->devicetype & 0x40)
                dprintk(DBGLVL_API, "   = Tuner\n");
            if (exthdr->devicetype & 0x80)
                dprintk(DBGLVL_API, "   = IF PLL\n");
            if (exthdr->devicetype & 0x100)
                dprintk(DBGLVL_API, "   = Demodulator\n");
            if (exthdr->devicetype & 0x200)
                dprintk(DBGLVL_API, "   = RDS Decoder\n");
            if (exthdr->devicetype & 0x400)
                dprintk(DBGLVL_API, "   = Encoder\n");
            if (exthdr->devicetype & 0x800)
                dprintk(DBGLVL_API, "   = IR Decoder\n");
            if (exthdr->devicetype & 0x1000)
                dprintk(DBGLVL_API, "   = EEPROM\n");
            if (exthdr->devicetype & 0x2000)
                dprintk(DBGLVL_API,
                    "   = VBI Decoder\n");
            if (exthdr->devicetype & 0x10000)
                dprintk(DBGLVL_API,
                    "   = Streaming Device\n");
            if (exthdr->devicetype & 0x20000)
                dprintk(DBGLVL_API,
                    "   = DRM Device\n");
            if (exthdr->devicetype & 0x40000000)
                dprintk(DBGLVL_API,
                    "   = Generic Device\n");
            if (exthdr->devicetype & 0x80000000)
                dprintk(DBGLVL_API,
                    "   = Config Space Device\n");
            dprintk(DBGLVL_API, "  numgpiopins = 0x%x\n",
                exthdr->numgpiopins);
            dprintk(DBGLVL_API, "  numgpiogroups = 0x%x\n",
                exthdr->numgpiogroups);
            dprintk(DBGLVL_API, "  controlsize = 0x%x\n",
                exthdr->controlsize);
            if (exthdr->devicetype & 0x80) {
                if (currpath == 1)
                    encport = &dev->ports[SAA7164_PORT_ENC1];
                else
                    encport = &dev->ports[SAA7164_PORT_ENC2];
                memcpy(&encport->ifunit, exthdr,
                    sizeof(struct tmComResExtDevDescrHeader));
                dprintk(DBGLVL_API,
                    "  (becomes dev->enc[%d])\n",
                    encport->nr);
            }
            break;
        case PVC_INFRARED_UNIT:
            dprintk(DBGLVL_API, " PVC_INFRARED_UNIT\n");
            break;
        case DRM_UNIT:
            dprintk(DBGLVL_API, " DRM_UNIT\n");
            break;
        default:
            dprintk(DBGLVL_API, "default %d\n", hdr->subtype);
        }

        dprintk(DBGLVL_API, " 1.%x\n", hdr->len);
        dprintk(DBGLVL_API, " 2.%x\n", hdr->type);
        dprintk(DBGLVL_API, " 3.%x\n", hdr->subtype);
        dprintk(DBGLVL_API, " 4.%x\n", hdr->unitid);

        idx += hdr->len;
    }

    return 0;
}

int saa7164_api_enum_subdevs(struct saa7164_dev *dev)
{
    int ret;
    u32 buflen = 0;
    u8 *buf;

    dprintk(DBGLVL_API, "%s()\n", __func__);

    /* Get the total descriptor length */
    ret = saa7164_cmd_send(dev, 0, GET_LEN,
        GET_DESCRIPTORS_CONTROL, sizeof(buflen), &buflen);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);

    dprintk(DBGLVL_API, "%s() total descriptor size = %d bytes.\n",
        __func__, buflen);

    /* Allocate enough storage for all of the descs */
    buf = kzalloc(buflen, GFP_KERNEL);
    if (!buf)
        return SAA_ERR_NO_RESOURCES;

    /* Retrieve them */
    ret = saa7164_cmd_send(dev, 0, GET_CUR,
        GET_DESCRIPTORS_CONTROL, buflen, buf);
    if (ret != SAA_OK) {
        printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);
        goto out;
    }

    if (saa_debug & DBGLVL_API)
        print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1, buf,
                   buflen & ~15, false);

    saa7164_api_dump_subdevs(dev, buf, buflen);

out:
    kfree(buf);
    return ret;
}

int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg,
    u32 datalen, u8 *data)
{
    struct saa7164_dev *dev = bus->dev;
    u16 len = 0;
    int unitid;
    u8 buf[256];
    int ret;

    dprintk(DBGLVL_API, "%s()\n", __func__);

    if (reglen > 4)
        return -EIO;

    /* Prepare the send buffer */
    /* Bytes 00-03 source register length
     *       04-07 source bytes to read
     *       08... register address
     */
    memset(buf, 0, sizeof(buf));
    memcpy((buf + 2 * sizeof(u32) + 0), reg, reglen);
    *((u32 *)(buf + 0 * sizeof(u32))) = reglen;
    *((u32 *)(buf + 1 * sizeof(u32))) = datalen;

    unitid = saa7164_i2caddr_to_unitid(bus, addr);
    if (unitid < 0) {
        printk(KERN_ERR
            "%s() error, cannot translate regaddr 0x%x to unitid\n",
            __func__, addr);
        return -EIO;
    }

    ret = saa7164_cmd_send(bus->dev, unitid, GET_LEN,
        EXU_REGISTER_ACCESS_CONTROL, sizeof(len), &len);
    if (ret != SAA_OK) {
        printk(KERN_ERR "%s() error, ret(1) = 0x%x\n", __func__, ret);
        return -EIO;
    }

    dprintk(DBGLVL_API, "%s() len = %d bytes\n", __func__, len);

    if (saa_debug & DBGLVL_I2C)
        print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1, buf,
                   32, false);

    ret = saa7164_cmd_send(bus->dev, unitid, GET_CUR,
        EXU_REGISTER_ACCESS_CONTROL, len, &buf);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret(2) = 0x%x\n", __func__, ret);
    else {
        if (saa_debug & DBGLVL_I2C)
            print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1,
                       buf, sizeof(buf), false);
        memcpy(data, (buf + 2 * sizeof(u32) + reglen), datalen);
    }

    return ret == SAA_OK ? 0 : -EIO;
}

/* For a given 8 bit i2c address device, write the buffer */
int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr, u32 datalen,
    u8 *data)
{
    struct saa7164_dev *dev = bus->dev;
    u16 len = 0;
    int unitid;
    int reglen;
    u8 buf[256];
    int ret;

    dprintk(DBGLVL_API, "%s()\n", __func__);

    if ((datalen == 0) || (datalen > 232))
        return -EIO;

    memset(buf, 0, sizeof(buf));

    unitid = saa7164_i2caddr_to_unitid(bus, addr);
    if (unitid < 0) {
        printk(KERN_ERR
            "%s() error, cannot translate regaddr 0x%x to unitid\n",
            __func__, addr);
        return -EIO;
    }

    reglen = saa7164_i2caddr_to_reglen(bus, addr);
    if (reglen < 0) {
        printk(KERN_ERR
            "%s() error, cannot translate regaddr to reglen\n",
            __func__);
        return -EIO;
    }

    ret = saa7164_cmd_send(bus->dev, unitid, GET_LEN,
        EXU_REGISTER_ACCESS_CONTROL, sizeof(len), &len);
    if (ret != SAA_OK) {
        printk(KERN_ERR "%s() error, ret(1) = 0x%x\n", __func__, ret);
        return -EIO;
    }

    dprintk(DBGLVL_API, "%s() len = %d bytes\n", __func__, len);

    /* Prepare the send buffer */
    /* Bytes 00-03 dest register length
     *       04-07 dest bytes to write
     *       08... register address
     */
    *((u32 *)(buf + 0 * sizeof(u32))) = reglen;
    *((u32 *)(buf + 1 * sizeof(u32))) = datalen - reglen;
    memcpy((buf + 2 * sizeof(u32)), data, datalen);

    if (saa_debug & DBGLVL_I2C)
        print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1,
                   buf, sizeof(buf), false);

    ret = saa7164_cmd_send(bus->dev, unitid, SET_CUR,
        EXU_REGISTER_ACCESS_CONTROL, len, &buf);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret(2) = 0x%x\n", __func__, ret);

    return ret == SAA_OK ? 0 : -EIO;
}

int saa7164_api_modify_gpio(struct saa7164_dev *dev, u8 unitid,
    u8 pin, u8 state)
{
    int ret;
    struct tmComResGPIO t;

    dprintk(DBGLVL_API, "%s(0x%x, %d, %d)\n",
        __func__, unitid, pin, state);

    if ((pin > 7) || (state > 2))
        return SAA_ERR_BAD_PARAMETER;

    t.pin = pin;
    t.state = state;

    ret = saa7164_cmd_send(dev, unitid, SET_CUR,
        EXU_GPIO_CONTROL, sizeof(t), &t);
    if (ret != SAA_OK)
        printk(KERN_ERR "%s() error, ret = 0x%x\n",
            __func__, ret);

    return ret;
}

int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid,
    u8 pin)
{
    return saa7164_api_modify_gpio(dev, unitid, pin, 1);
}

int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid,
    u8 pin)
{
    return saa7164_api_modify_gpio(dev, unitid, pin, 0);
}