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av7110_v4l.c

/*
 * av7110_v4l.c: av7110 video4linux interface for DVB and Siemens DVB-C analog module
 *
 * Copyright (C) 1999-2002 Ralph  Metzler
 *                       & Marcus Metzler for convergence integrated media GmbH
 *
 * originally based on code by:
 * Copyright (C) 1998,1999 Christian Theiss <mistert@rz.fh-augsburg.de>
 *
 * 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.
 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
 *
 * the project's page is at http://www.linuxtv.org/dvb/
 */

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/timer.h>
#include <linux/poll.h>

#include "av7110.h"
#include "av7110_hw.h"
#include "av7110_av.h"

int msp_writereg(struct av7110 *av7110, u8 dev, u16 reg, u16 val)
{
      u8 msg[5] = { dev, reg >> 8, reg & 0xff, val >> 8 , val & 0xff };
      struct i2c_msg msgs = { .flags = 0, .len = 5, .buf = msg };

      switch (av7110->adac_type) {
      case DVB_ADAC_MSP34x0:
            msgs.addr = 0x40;
            break;
      case DVB_ADAC_MSP34x5:
            msgs.addr = 0x42;
            break;
      default:
            return 0;
      }

      if (i2c_transfer(&av7110->i2c_adap, &msgs, 1) != 1) {
            dprintk(1, "dvb-ttpci: failed @ card %d, %u = %u\n",
                   av7110->dvb_adapter.num, reg, val);
            return -EIO;
      }
      return 0;
}

static int msp_readreg(struct av7110 *av7110, u8 dev, u16 reg, u16 *val)
{
      u8 msg1[3] = { dev, reg >> 8, reg & 0xff };
      u8 msg2[2];
      struct i2c_msg msgs[2] = {
            { .flags = 0         , .len = 3, .buf = msg1 },
            { .flags = I2C_M_RD, .len = 2, .buf = msg2 }
      };

      switch (av7110->adac_type) {
      case DVB_ADAC_MSP34x0:
            msgs[0].addr = 0x40;
            msgs[1].addr = 0x40;
            break;
      case DVB_ADAC_MSP34x5:
            msgs[0].addr = 0x42;
            msgs[1].addr = 0x42;
            break;
      default:
            return 0;
      }

      if (i2c_transfer(&av7110->i2c_adap, &msgs[0], 2) != 2) {
            dprintk(1, "dvb-ttpci: failed @ card %d, %u\n",
                   av7110->dvb_adapter.num, reg);
            return -EIO;
      }
      *val = (msg2[0] << 8) | msg2[1];
      return 0;
}

static struct v4l2_input inputs[4] = {
      {
            .index            = 0,
            .name       = "DVB",
            .type       = V4L2_INPUT_TYPE_CAMERA,
            .audioset   = 1,
            .tuner            = 0, /* ignored */
            .std        = V4L2_STD_PAL_BG|V4L2_STD_NTSC_M,
            .status           = 0,
      }, {
            .index            = 1,
            .name       = "Television",
            .type       = V4L2_INPUT_TYPE_TUNER,
            .audioset   = 2,
            .tuner            = 0,
            .std        = V4L2_STD_PAL_BG|V4L2_STD_NTSC_M,
            .status           = 0,
      }, {
            .index            = 2,
            .name       = "Video",
            .type       = V4L2_INPUT_TYPE_CAMERA,
            .audioset   = 0,
            .tuner            = 0,
            .std        = V4L2_STD_PAL_BG|V4L2_STD_NTSC_M,
            .status           = 0,
      }, {
            .index            = 3,
            .name       = "Y/C",
            .type       = V4L2_INPUT_TYPE_CAMERA,
            .audioset   = 0,
            .tuner            = 0,
            .std        = V4L2_STD_PAL_BG|V4L2_STD_NTSC_M,
            .status           = 0,
      }
};

static int ves1820_writereg(struct saa7146_dev *dev, u8 addr, u8 reg, u8 data)
{
      struct av7110 *av7110 = dev->ext_priv;
      u8 buf[] = { 0x00, reg, data };
      struct i2c_msg msg = { .addr = addr, .flags = 0, .buf = buf, .len = 3 };

      dprintk(4, "dev: %p\n", dev);

      if (1 != i2c_transfer(&av7110->i2c_adap, &msg, 1))
            return -1;
      return 0;
}

static int tuner_write(struct saa7146_dev *dev, u8 addr, u8 data [4])
{
      struct av7110 *av7110 = dev->ext_priv;
      struct i2c_msg msg = { .addr = addr, .flags = 0, .buf = data, .len = 4 };

      dprintk(4, "dev: %p\n", dev);

      if (1 != i2c_transfer(&av7110->i2c_adap, &msg, 1))
            return -1;
      return 0;
}

static int ves1820_set_tv_freq(struct saa7146_dev *dev, u32 freq)
{
      u32 div;
      u8 config;
      u8 buf[4];

      dprintk(4, "freq: 0x%08x\n", freq);

      /* magic number: 614. tuning with the frequency given by v4l2
         is always off by 614*62.5 = 38375 kHz...*/
      div = freq + 614;

      buf[0] = (div >> 8) & 0x7f;
      buf[1] = div & 0xff;
      buf[2] = 0x8e;

      if (freq < (u32) (16 * 168.25))
            config = 0xa0;
      else if (freq < (u32) (16 * 447.25))
            config = 0x90;
      else
            config = 0x30;
      config &= ~0x02;

      buf[3] = config;

      return tuner_write(dev, 0x61, buf);
}

static int stv0297_set_tv_freq(struct saa7146_dev *dev, u32 freq)
{
      struct av7110 *av7110 = (struct av7110*)dev->ext_priv;
      u32 div;
      u8 data[4];

      div = (freq + 38900000 + 31250) / 62500;

      data[0] = (div >> 8) & 0x7f;
      data[1] = div & 0xff;
      data[2] = 0xce;

      if (freq < 45000000)
            return -EINVAL;
      else if (freq < 137000000)
            data[3] = 0x01;
      else if (freq < 403000000)
            data[3] = 0x02;
      else if (freq < 860000000)
            data[3] = 0x04;
      else
            return -EINVAL;

      if (av7110->fe->ops.i2c_gate_ctrl)
            av7110->fe->ops.i2c_gate_ctrl(av7110->fe, 1);
      return tuner_write(dev, 0x63, data);
}



static struct saa7146_standard analog_standard[];
static struct saa7146_standard dvb_standard[];
static struct saa7146_standard standard[];

static struct v4l2_audio msp3400_v4l2_audio = {
      .index = 0,
      .name = "Television",
      .capability = V4L2_AUDCAP_STEREO
};

static int av7110_dvb_c_switch(struct saa7146_fh *fh)
{
      struct saa7146_dev *dev = fh->dev;
      struct saa7146_vv *vv = dev->vv_data;
      struct av7110 *av7110 = (struct av7110*)dev->ext_priv;
      u16 adswitch;
      int source, sync, err;

      dprintk(4, "%p\n", av7110);

      if ((vv->video_status & STATUS_OVERLAY) != 0) {
            vv->ov_suspend = vv->video_fh;
            err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */
            if (err != 0) {
                  dprintk(2, "suspending video failed\n");
                  vv->ov_suspend = NULL;
            }
      }

      if (0 != av7110->current_input) {
            dprintk(1, "switching to analog TV:\n");
            adswitch = 1;
            source = SAA7146_HPS_SOURCE_PORT_B;
            sync = SAA7146_HPS_SYNC_PORT_B;
            memcpy(standard, analog_standard, sizeof(struct saa7146_standard) * 2);

            switch (av7110->current_input) {
            case 1:
                  dprintk(1, "switching SAA7113 to Analog Tuner Input.\n");
                  msp_writereg(av7110, MSP_WR_DSP, 0x0008, 0x0000); // loudspeaker source
                  msp_writereg(av7110, MSP_WR_DSP, 0x0009, 0x0000); // headphone source
                  msp_writereg(av7110, MSP_WR_DSP, 0x000a, 0x0000); // SCART 1 source
                  msp_writereg(av7110, MSP_WR_DSP, 0x000e, 0x3000); // FM matrix, mono
                  msp_writereg(av7110, MSP_WR_DSP, 0x0000, 0x4f00); // loudspeaker + headphone
                  msp_writereg(av7110, MSP_WR_DSP, 0x0007, 0x4f00); // SCART 1 volume

                  if (av7110->analog_tuner_flags & ANALOG_TUNER_VES1820) {
                        if (ves1820_writereg(dev, 0x09, 0x0f, 0x60))
                              dprintk(1, "setting band in demodulator failed.\n");
                  } else if (av7110->analog_tuner_flags & ANALOG_TUNER_STV0297) {
                        saa7146_setgpio(dev, 1, SAA7146_GPIO_OUTHI); // TDA9819 pin9(STD)
                        saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTHI); // TDA9819 pin30(VIF)
                  }
                  if (i2c_writereg(av7110, 0x48, 0x02, 0xd0) != 1)
                        dprintk(1, "saa7113 write failed @ card %d", av7110->dvb_adapter.num);
                  break;
            case 2:
                  dprintk(1, "switching SAA7113 to Video AV CVBS Input.\n");
                  if (i2c_writereg(av7110, 0x48, 0x02, 0xd2) != 1)
                        dprintk(1, "saa7113 write failed @ card %d", av7110->dvb_adapter.num);
                  break;
            case 3:
                  dprintk(1, "switching SAA7113 to Video AV Y/C Input.\n");
                  if (i2c_writereg(av7110, 0x48, 0x02, 0xd9) != 1)
                        dprintk(1, "saa7113 write failed @ card %d", av7110->dvb_adapter.num);
                  break;
            default:
                  dprintk(1, "switching SAA7113 to Input: AV7110: SAA7113: invalid input.\n");
            }
      } else {
            adswitch = 0;
            source = SAA7146_HPS_SOURCE_PORT_A;
            sync = SAA7146_HPS_SYNC_PORT_A;
            memcpy(standard, dvb_standard, sizeof(struct saa7146_standard) * 2);
            dprintk(1, "switching DVB mode\n");
            msp_writereg(av7110, MSP_WR_DSP, 0x0008, 0x0220); // loudspeaker source
            msp_writereg(av7110, MSP_WR_DSP, 0x0009, 0x0220); // headphone source
            msp_writereg(av7110, MSP_WR_DSP, 0x000a, 0x0220); // SCART 1 source
            msp_writereg(av7110, MSP_WR_DSP, 0x000e, 0x3000); // FM matrix, mono
            msp_writereg(av7110, MSP_WR_DSP, 0x0000, 0x7f00); // loudspeaker + headphone
            msp_writereg(av7110, MSP_WR_DSP, 0x0007, 0x7f00); // SCART 1 volume

            if (av7110->analog_tuner_flags & ANALOG_TUNER_VES1820) {
                  if (ves1820_writereg(dev, 0x09, 0x0f, 0x20))
                        dprintk(1, "setting band in demodulator failed.\n");
            } else if (av7110->analog_tuner_flags & ANALOG_TUNER_STV0297) {
                  saa7146_setgpio(dev, 1, SAA7146_GPIO_OUTLO); // TDA9819 pin9(STD)
                  saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTLO); // TDA9819 pin30(VIF)
            }
      }

      /* hmm, this does not do anything!? */
      if (av7110_fw_cmd(av7110, COMTYPE_AUDIODAC, ADSwitch, 1, adswitch))
            dprintk(1, "ADSwitch error\n");

      saa7146_set_hps_source_and_sync(dev, source, sync);

      if (vv->ov_suspend != NULL) {
            saa7146_start_preview(vv->ov_suspend);
            vv->ov_suspend = NULL;
      }

      return 0;
}

static int av7110_ioctl(struct saa7146_fh *fh, unsigned int cmd, void *arg)
{
      struct saa7146_dev *dev = fh->dev;
      struct av7110 *av7110 = (struct av7110*) dev->ext_priv;
      dprintk(4, "saa7146_dev: %p\n", dev);

      switch (cmd) {
      case VIDIOC_G_TUNER:
      {
            struct v4l2_tuner *t = arg;
            u16 stereo_det;
            s8 stereo;

            dprintk(2, "VIDIOC_G_TUNER: %d\n", t->index);

            if (!av7110->analog_tuner_flags || t->index != 0)
                  return -EINVAL;

            memset(t, 0, sizeof(*t));
            strcpy((char *)t->name, "Television");

            t->type = V4L2_TUNER_ANALOG_TV;
            t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
                  V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
            t->rangelow = 772;      /* 48.25 MHZ / 62.5 kHz = 772, see fi1216mk2-specs, page 2 */
            t->rangehigh = 13684;   /* 855.25 MHz / 62.5 kHz = 13684 */
            /* FIXME: add the real signal strength here */
            t->signal = 0xffff;
            t->afc = 0;

            // FIXME: standard / stereo detection is still broken
            msp_readreg(av7110, MSP_RD_DEM, 0x007e, &stereo_det);
            dprintk(1, "VIDIOC_G_TUNER: msp3400 TV standard detection: 0x%04x\n", stereo_det);
            msp_readreg(av7110, MSP_RD_DSP, 0x0018, &stereo_det);
            dprintk(1, "VIDIOC_G_TUNER: msp3400 stereo detection: 0x%04x\n", stereo_det);
            stereo = (s8)(stereo_det >> 8);
            if (stereo > 0x10) {
                  /* stereo */
                  t->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_MONO;
                  t->audmode = V4L2_TUNER_MODE_STEREO;
            }
            else if (stereo < -0x10) {
                  /* bilingual */
                  t->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
                  t->audmode = V4L2_TUNER_MODE_LANG1;
            }
            else /* mono */
                  t->rxsubchans = V4L2_TUNER_SUB_MONO;

            return 0;
      }
      case VIDIOC_S_TUNER:
      {
            struct v4l2_tuner *t = arg;
            u16 fm_matrix, src;
            dprintk(2, "VIDIOC_S_TUNER: %d\n", t->index);

            if (!av7110->analog_tuner_flags || av7110->current_input != 1)
                  return -EINVAL;

            switch (t->audmode) {
            case V4L2_TUNER_MODE_STEREO:
                  dprintk(2, "VIDIOC_S_TUNER: V4L2_TUNER_MODE_STEREO\n");
                  fm_matrix = 0x3001; // stereo
                  src = 0x0020;
                  break;
            case V4L2_TUNER_MODE_LANG1_LANG2:
                  dprintk(2, "VIDIOC_S_TUNER: V4L2_TUNER_MODE_LANG1_LANG2\n");
                  fm_matrix = 0x3000; // bilingual
                  src = 0x0020;
                  break;
            case V4L2_TUNER_MODE_LANG1:
                  dprintk(2, "VIDIOC_S_TUNER: V4L2_TUNER_MODE_LANG1\n");
                  fm_matrix = 0x3000; // mono
                  src = 0x0000;
                  break;
            case V4L2_TUNER_MODE_LANG2:
                  dprintk(2, "VIDIOC_S_TUNER: V4L2_TUNER_MODE_LANG2\n");
                  fm_matrix = 0x3000; // mono
                  src = 0x0010;
                  break;
            default: /* case V4L2_TUNER_MODE_MONO: */
                  dprintk(2, "VIDIOC_S_TUNER: TDA9840_SET_MONO\n");
                  fm_matrix = 0x3000; // mono
                  src = 0x0030;
                  break;
            }
            msp_writereg(av7110, MSP_WR_DSP, 0x000e, fm_matrix);
            msp_writereg(av7110, MSP_WR_DSP, 0x0008, src);
            msp_writereg(av7110, MSP_WR_DSP, 0x0009, src);
            msp_writereg(av7110, MSP_WR_DSP, 0x000a, src);
            return 0;
      }
      case VIDIOC_G_FREQUENCY:
      {
            struct v4l2_frequency *f = arg;

            dprintk(2, "VIDIOC_G_FREQ: freq:0x%08x.\n", f->frequency);

            if (!av7110->analog_tuner_flags || av7110->current_input != 1)
                  return -EINVAL;

            memset(f, 0, sizeof(*f));
            f->type = V4L2_TUNER_ANALOG_TV;
            f->frequency =    av7110->current_freq;
            return 0;
      }
      case VIDIOC_S_FREQUENCY:
      {
            struct v4l2_frequency *f = arg;

            dprintk(2, "VIDIOC_S_FREQUENCY: freq:0x%08x.\n", f->frequency);

            if (!av7110->analog_tuner_flags || av7110->current_input != 1)
                  return -EINVAL;

            if (V4L2_TUNER_ANALOG_TV != f->type)
                  return -EINVAL;

            msp_writereg(av7110, MSP_WR_DSP, 0x0000, 0xffe0); // fast mute
            msp_writereg(av7110, MSP_WR_DSP, 0x0007, 0xffe0);

            /* tune in desired frequency */
            if (av7110->analog_tuner_flags & ANALOG_TUNER_VES1820) {
                  ves1820_set_tv_freq(dev, f->frequency);
            } else if (av7110->analog_tuner_flags & ANALOG_TUNER_STV0297) {
                  stv0297_set_tv_freq(dev, f->frequency);
            }
            av7110->current_freq = f->frequency;

            msp_writereg(av7110, MSP_WR_DSP, 0x0015, 0x003f); // start stereo detection
            msp_writereg(av7110, MSP_WR_DSP, 0x0015, 0x0000);
            msp_writereg(av7110, MSP_WR_DSP, 0x0000, 0x4f00); // loudspeaker + headphone
            msp_writereg(av7110, MSP_WR_DSP, 0x0007, 0x4f00); // SCART 1 volume
            return 0;
      }
      case VIDIOC_ENUMINPUT:
      {
            struct v4l2_input *i = arg;

            dprintk(2, "VIDIOC_ENUMINPUT: %d\n", i->index);

            if (av7110->analog_tuner_flags) {
                  if (i->index < 0 || i->index >= 4)
                        return -EINVAL;
            } else {
                  if (i->index != 0)
                        return -EINVAL;
            }

            memcpy(i, &inputs[i->index], sizeof(struct v4l2_input));

            return 0;
      }
      case VIDIOC_G_INPUT:
      {
            int *input = (int *)arg;
            *input = av7110->current_input;
            dprintk(2, "VIDIOC_G_INPUT: %d\n", *input);
            return 0;
      }
      case VIDIOC_S_INPUT:
      {
            int input = *(int *)arg;

            dprintk(2, "VIDIOC_S_INPUT: %d\n", input);

            if (!av7110->analog_tuner_flags)
                  return 0;

            if (input < 0 || input >= 4)
                  return -EINVAL;

            av7110->current_input = input;
            return av7110_dvb_c_switch(fh);
      }
      case VIDIOC_G_AUDIO:
      {
            struct v4l2_audio *a = arg;

            dprintk(2, "VIDIOC_G_AUDIO: %d\n", a->index);
            if (a->index != 0)
                  return -EINVAL;
            memcpy(a, &msp3400_v4l2_audio, sizeof(struct v4l2_audio));
            break;
      }
      case VIDIOC_S_AUDIO:
      {
            struct v4l2_audio *a = arg;
            dprintk(2, "VIDIOC_S_AUDIO: %d\n", a->index);
            break;
      }
      case VIDIOC_G_SLICED_VBI_CAP:
      {
            struct v4l2_sliced_vbi_cap *cap = arg;
            dprintk(2, "VIDIOC_G_SLICED_VBI_CAP\n");
            memset(cap, 0, sizeof *cap);
            if (FW_VERSION(av7110->arm_app) >= 0x2623) {
                  cap->service_set = V4L2_SLICED_WSS_625;
                  cap->service_lines[0][23] = V4L2_SLICED_WSS_625;
            }
            break;
      }
      case VIDIOC_G_FMT:
      {
            struct v4l2_format *f = arg;
            dprintk(2, "VIDIOC_G_FMT:\n");
            if (f->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT ||
                FW_VERSION(av7110->arm_app) < 0x2623)
                  return -EAGAIN; /* handled by core driver */
            memset(&f->fmt.sliced, 0, sizeof f->fmt.sliced);
            if (av7110->wssMode) {
                  f->fmt.sliced.service_set = V4L2_SLICED_WSS_625;
                  f->fmt.sliced.service_lines[0][23] = V4L2_SLICED_WSS_625;
                  f->fmt.sliced.io_size = sizeof (struct v4l2_sliced_vbi_data);
            }
            break;
      }
      case VIDIOC_S_FMT:
      {
            struct v4l2_format *f = arg;
            dprintk(2, "VIDIOC_S_FMT\n");
            if (f->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT ||
                FW_VERSION(av7110->arm_app) < 0x2623)
                  return -EAGAIN; /* handled by core driver */
            if (f->fmt.sliced.service_set != V4L2_SLICED_WSS_625 &&
                f->fmt.sliced.service_lines[0][23] != V4L2_SLICED_WSS_625) {
                  memset(&f->fmt.sliced, 0, sizeof f->fmt.sliced);
                  /* WSS controlled by firmware */
                  av7110->wssMode = 0;
                  av7110->wssData = 0;
                  return av7110_fw_cmd(av7110, COMTYPE_ENCODER,
                                   SetWSSConfig, 1, 0);
            } else {
                  memset(&f->fmt.sliced, 0, sizeof f->fmt.sliced);
                  f->fmt.sliced.service_set = V4L2_SLICED_WSS_625;
                  f->fmt.sliced.service_lines[0][23] = V4L2_SLICED_WSS_625;
                  f->fmt.sliced.io_size = sizeof (struct v4l2_sliced_vbi_data);
                  /* WSS controlled by userspace */
                  av7110->wssMode = 1;
                  av7110->wssData = 0;
            }
            break;
      }
      default:
            printk("no such ioctl\n");
            return -ENOIOCTLCMD;
      }
      return 0;
}

static int av7110_vbi_reset(struct inode *inode, struct file *file)
{
      struct saa7146_fh *fh = file->private_data;
      struct saa7146_dev *dev = fh->dev;
      struct av7110 *av7110 = (struct av7110*) dev->ext_priv;

      dprintk(2, "%s\n", __FUNCTION__);
      av7110->wssMode = 0;
      av7110->wssData = 0;
      if (FW_VERSION(av7110->arm_app) < 0x2623)
            return 0;
      else
            return av7110_fw_cmd(av7110, COMTYPE_ENCODER, SetWSSConfig, 1, 0);
}

static ssize_t av7110_vbi_write(struct file *file, const char __user *data, size_t count, loff_t *ppos)
{
      struct saa7146_fh *fh = file->private_data;
      struct saa7146_dev *dev = fh->dev;
      struct av7110 *av7110 = (struct av7110*) dev->ext_priv;
      struct v4l2_sliced_vbi_data d;
      int rc;

      dprintk(2, "%s\n", __FUNCTION__);
      if (FW_VERSION(av7110->arm_app) < 0x2623 || !av7110->wssMode || count != sizeof d)
            return -EINVAL;
      if (copy_from_user(&d, data, count))
            return -EFAULT;
      if ((d.id != 0 && d.id != V4L2_SLICED_WSS_625) || d.field != 0 || d.line != 23)
            return -EINVAL;
      if (d.id)
            av7110->wssData = ((d.data[1] << 8) & 0x3f00) | d.data[0];
      else
            av7110->wssData = 0x8000;
      rc = av7110_fw_cmd(av7110, COMTYPE_ENCODER, SetWSSConfig, 2, 1, av7110->wssData);
      return (rc < 0) ? rc : count;
}

/****************************************************************************
 * INITIALIZATION
 ****************************************************************************/

static struct saa7146_extension_ioctls ioctls[] = {
      { VIDIOC_ENUMINPUT,     SAA7146_EXCLUSIVE },
      { VIDIOC_G_INPUT, SAA7146_EXCLUSIVE },
      { VIDIOC_S_INPUT, SAA7146_EXCLUSIVE },
      { VIDIOC_G_FREQUENCY,   SAA7146_EXCLUSIVE },
      { VIDIOC_S_FREQUENCY,   SAA7146_EXCLUSIVE },
      { VIDIOC_G_TUNER, SAA7146_EXCLUSIVE },
      { VIDIOC_S_TUNER, SAA7146_EXCLUSIVE },
      { VIDIOC_G_AUDIO, SAA7146_EXCLUSIVE },
      { VIDIOC_S_AUDIO, SAA7146_EXCLUSIVE },
      { VIDIOC_G_SLICED_VBI_CAP, SAA7146_EXCLUSIVE },
      { VIDIOC_G_FMT,         SAA7146_BEFORE },
      { VIDIOC_S_FMT,         SAA7146_BEFORE },
      { 0, 0 }
};

static u8 saa7113_init_regs[] = {
      0x02, 0xd0,
      0x03, 0x23,
      0x04, 0x00,
      0x05, 0x00,
      0x06, 0xe9,
      0x07, 0x0d,
      0x08, 0x98,
      0x09, 0x02,
      0x0a, 0x80,
      0x0b, 0x40,
      0x0c, 0x40,
      0x0d, 0x00,
      0x0e, 0x01,
      0x0f, 0x7c,
      0x10, 0x48,
      0x11, 0x0c,
      0x12, 0x8b,
      0x13, 0x1a,
      0x14, 0x00,
      0x15, 0x00,
      0x16, 0x00,
      0x17, 0x00,
      0x18, 0x00,
      0x19, 0x00,
      0x1a, 0x00,
      0x1b, 0x00,
      0x1c, 0x00,
      0x1d, 0x00,
      0x1e, 0x00,

      0x41, 0x77,
      0x42, 0x77,
      0x43, 0x77,
      0x44, 0x77,
      0x45, 0x77,
      0x46, 0x77,
      0x47, 0x77,
      0x48, 0x77,
      0x49, 0x77,
      0x4a, 0x77,
      0x4b, 0x77,
      0x4c, 0x77,
      0x4d, 0x77,
      0x4e, 0x77,
      0x4f, 0x77,
      0x50, 0x77,
      0x51, 0x77,
      0x52, 0x77,
      0x53, 0x77,
      0x54, 0x77,
      0x55, 0x77,
      0x56, 0x77,
      0x57, 0xff,

      0xff
};


static struct saa7146_ext_vv av7110_vv_data_st;
static struct saa7146_ext_vv av7110_vv_data_c;

int av7110_init_analog_module(struct av7110 *av7110)
{
      u16 version1, version2;

      if (i2c_writereg(av7110, 0x80, 0x0, 0x80) == 1 &&
          i2c_writereg(av7110, 0x80, 0x0, 0) == 1) {
            printk("dvb-ttpci: DVB-C analog module @ card %d detected, initializing MSP3400\n",
                  av7110->dvb_adapter.num);
            av7110->adac_type = DVB_ADAC_MSP34x0;
      } else if (i2c_writereg(av7110, 0x84, 0x0, 0x80) == 1 &&
               i2c_writereg(av7110, 0x84, 0x0, 0) == 1) {
            printk("dvb-ttpci: DVB-C analog module @ card %d detected, initializing MSP3415\n",
                  av7110->dvb_adapter.num);
            av7110->adac_type = DVB_ADAC_MSP34x5;
      } else
            return -ENODEV;

      msleep(100); // the probing above resets the msp...
      msp_readreg(av7110, MSP_RD_DSP, 0x001e, &version1);
      msp_readreg(av7110, MSP_RD_DSP, 0x001f, &version2);
      dprintk(1, "dvb-ttpci: @ card %d MSP34xx version 0x%04x 0x%04x\n",
            av7110->dvb_adapter.num, version1, version2);
      msp_writereg(av7110, MSP_WR_DSP, 0x0013, 0x0c00);
      msp_writereg(av7110, MSP_WR_DSP, 0x0000, 0x7f00); // loudspeaker + headphone
      msp_writereg(av7110, MSP_WR_DSP, 0x0008, 0x0220); // loudspeaker source
      msp_writereg(av7110, MSP_WR_DSP, 0x0009, 0x0220); // headphone source
      msp_writereg(av7110, MSP_WR_DSP, 0x0004, 0x7f00); // loudspeaker volume
      msp_writereg(av7110, MSP_WR_DSP, 0x000a, 0x0220); // SCART 1 source
      msp_writereg(av7110, MSP_WR_DSP, 0x0007, 0x7f00); // SCART 1 volume
      msp_writereg(av7110, MSP_WR_DSP, 0x000d, 0x1900); // prescale SCART

      if (i2c_writereg(av7110, 0x48, 0x01, 0x00)!=1) {
            INFO(("saa7113 not accessible.\n"));
      } else {
            u8 *i = saa7113_init_regs;

            if ((av7110->dev->pci->subsystem_vendor == 0x110a) && (av7110->dev->pci->subsystem_device == 0x0000)) {
                  /* Fujitsu/Siemens DVB-Cable */
                  av7110->analog_tuner_flags |= ANALOG_TUNER_VES1820;
            } else if ((av7110->dev->pci->subsystem_vendor == 0x13c2) && (av7110->dev->pci->subsystem_device == 0x0002)) {
                  /* Hauppauge/TT DVB-C premium */
                  av7110->analog_tuner_flags |= ANALOG_TUNER_VES1820;
            } else if ((av7110->dev->pci->subsystem_vendor == 0x13c2) && (av7110->dev->pci->subsystem_device == 0x000A)) {
                  /* Hauppauge/TT DVB-C premium */
                  av7110->analog_tuner_flags |= ANALOG_TUNER_STV0297;
            }

            /* setup for DVB by default */
            if (av7110->analog_tuner_flags & ANALOG_TUNER_VES1820) {
                  if (ves1820_writereg(av7110->dev, 0x09, 0x0f, 0x20))
                        dprintk(1, "setting band in demodulator failed.\n");
            } else if (av7110->analog_tuner_flags & ANALOG_TUNER_STV0297) {
                  saa7146_setgpio(av7110->dev, 1, SAA7146_GPIO_OUTLO); // TDA9819 pin9(STD)
                  saa7146_setgpio(av7110->dev, 3, SAA7146_GPIO_OUTLO); // TDA9819 pin30(VIF)
            }

            /* init the saa7113 */
            while (*i != 0xff) {
                  if (i2c_writereg(av7110, 0x48, i[0], i[1]) != 1) {
                        dprintk(1, "saa7113 initialization failed @ card %d", av7110->dvb_adapter.num);
                        break;
                  }
                  i += 2;
            }
            /* setup msp for analog sound: B/G Dual-FM */
            msp_writereg(av7110, MSP_WR_DEM, 0x00bb, 0x02d0); // AD_CV
            msp_writereg(av7110, MSP_WR_DEM, 0x0001,  3); // FIR1
            msp_writereg(av7110, MSP_WR_DEM, 0x0001, 18); // FIR1
            msp_writereg(av7110, MSP_WR_DEM, 0x0001, 27); // FIR1
            msp_writereg(av7110, MSP_WR_DEM, 0x0001, 48); // FIR1
            msp_writereg(av7110, MSP_WR_DEM, 0x0001, 66); // FIR1
            msp_writereg(av7110, MSP_WR_DEM, 0x0001, 72); // FIR1
            msp_writereg(av7110, MSP_WR_DEM, 0x0005,  4); // FIR2
            msp_writereg(av7110, MSP_WR_DEM, 0x0005, 64); // FIR2
            msp_writereg(av7110, MSP_WR_DEM, 0x0005,  0); // FIR2
            msp_writereg(av7110, MSP_WR_DEM, 0x0005,  3); // FIR2
            msp_writereg(av7110, MSP_WR_DEM, 0x0005, 18); // FIR2
            msp_writereg(av7110, MSP_WR_DEM, 0x0005, 27); // FIR2
            msp_writereg(av7110, MSP_WR_DEM, 0x0005, 48); // FIR2
            msp_writereg(av7110, MSP_WR_DEM, 0x0005, 66); // FIR2
            msp_writereg(av7110, MSP_WR_DEM, 0x0005, 72); // FIR2
            msp_writereg(av7110, MSP_WR_DEM, 0x0083, 0xa000); // MODE_REG
            msp_writereg(av7110, MSP_WR_DEM, 0x0093, 0x00aa); // DCO1_LO 5.74MHz
            msp_writereg(av7110, MSP_WR_DEM, 0x009b, 0x04fc); // DCO1_HI
            msp_writereg(av7110, MSP_WR_DEM, 0x00a3, 0x038e); // DCO2_LO 5.5MHz
            msp_writereg(av7110, MSP_WR_DEM, 0x00ab, 0x04c6); // DCO2_HI
            msp_writereg(av7110, MSP_WR_DEM, 0x0056, 0); // LOAD_REG 1/2
      }

      memcpy(standard, dvb_standard, sizeof(struct saa7146_standard) * 2);
      /* set dd1 stream a & b */
      saa7146_write(av7110->dev, DD1_STREAM_B, 0x00000000);
      saa7146_write(av7110->dev, DD1_INIT, 0x03000700);
      saa7146_write(av7110->dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));

      return 0;
}

int av7110_init_v4l(struct av7110 *av7110)
{
      struct saa7146_dev* dev = av7110->dev;
      int ret;

      /* special case DVB-C: these cards have an analog tuner
         plus need some special handling, so we have separate
         saa7146_ext_vv data for these... */
      if (av7110->analog_tuner_flags)
            ret = saa7146_vv_init(dev, &av7110_vv_data_c);
      else
            ret = saa7146_vv_init(dev, &av7110_vv_data_st);

      if (ret) {
            ERR(("cannot init capture device. skipping.\n"));
            return -ENODEV;
      }

      if (saa7146_register_device(&av7110->v4l_dev, dev, "av7110", VFL_TYPE_GRABBER)) {
            ERR(("cannot register capture device. skipping.\n"));
            saa7146_vv_release(dev);
            return -ENODEV;
      }
      if (saa7146_register_device(&av7110->vbi_dev, dev, "av7110", VFL_TYPE_VBI))
            ERR(("cannot register vbi v4l2 device. skipping.\n"));
      return 0;
}

int av7110_exit_v4l(struct av7110 *av7110)
{
      struct saa7146_dev* dev = av7110->dev;

      saa7146_unregister_device(&av7110->v4l_dev, av7110->dev);
      saa7146_unregister_device(&av7110->vbi_dev, av7110->dev);

      saa7146_vv_release(dev);

      return 0;
}



/* FIXME: these values are experimental values that look better than the
   values from the latest "official" driver -- at least for me... (MiHu) */
static struct saa7146_standard standard[] = {
      {
            .name = "PAL",    .id         = V4L2_STD_PAL_BG,
            .v_offset   = 0x15,     .v_field    = 288,
            .h_offset   = 0x48,     .h_pixels   = 708,
            .v_max_out  = 576,      .h_max_out  = 768,
      }, {
            .name = "NTSC",   .id         = V4L2_STD_NTSC,
            .v_offset   = 0x10,     .v_field    = 244,
            .h_offset   = 0x40,     .h_pixels   = 708,
            .v_max_out  = 480,      .h_max_out  = 640,
      }
};

static struct saa7146_standard analog_standard[] = {
      {
            .name = "PAL",    .id         = V4L2_STD_PAL_BG,
            .v_offset   = 0x1b,     .v_field    = 288,
            .h_offset   = 0x08,     .h_pixels   = 708,
            .v_max_out  = 576,      .h_max_out  = 768,
      }, {
            .name = "NTSC",   .id         = V4L2_STD_NTSC,
            .v_offset   = 0x10,     .v_field    = 244,
            .h_offset   = 0x40,     .h_pixels   = 708,
            .v_max_out  = 480,      .h_max_out  = 640,
      }
};

static struct saa7146_standard dvb_standard[] = {
      {
            .name = "PAL",    .id         = V4L2_STD_PAL_BG,
            .v_offset   = 0x14,     .v_field    = 288,
            .h_offset   = 0x48,     .h_pixels   = 708,
            .v_max_out  = 576,      .h_max_out  = 768,
      }, {
            .name = "NTSC",   .id         = V4L2_STD_NTSC,
            .v_offset   = 0x10,     .v_field    = 244,
            .h_offset   = 0x40,     .h_pixels   = 708,
            .v_max_out  = 480,      .h_max_out  = 640,
      }
};

static int std_callback(struct saa7146_dev* dev, struct saa7146_standard *std)
{
      struct av7110 *av7110 = (struct av7110*) dev->ext_priv;

      if (std->id & V4L2_STD_PAL) {
            av7110->vidmode = VIDEO_MODE_PAL;
            av7110_set_vidmode(av7110, av7110->vidmode);
      }
      else if (std->id & V4L2_STD_NTSC) {
            av7110->vidmode = VIDEO_MODE_NTSC;
            av7110_set_vidmode(av7110, av7110->vidmode);
      }
      else
            return -1;

      return 0;
}


static struct saa7146_ext_vv av7110_vv_data_st = {
      .inputs           = 1,
      .audios           = 1,
      .capabilities     = V4L2_CAP_SLICED_VBI_OUTPUT,
      .flags            = 0,

      .stds       = &standard[0],
      .num_stds   = ARRAY_SIZE(standard),
      .std_callback     = &std_callback,

      .ioctls           = &ioctls[0],
      .ioctl            = av7110_ioctl,

      .vbi_fops.open    = av7110_vbi_reset,
      .vbi_fops.release = av7110_vbi_reset,
      .vbi_fops.write   = av7110_vbi_write,
};

static struct saa7146_ext_vv av7110_vv_data_c = {
      .inputs           = 1,
      .audios           = 1,
      .capabilities     = V4L2_CAP_TUNER | V4L2_CAP_SLICED_VBI_OUTPUT,
      .flags            = SAA7146_USE_PORT_B_FOR_VBI,

      .stds       = &standard[0],
      .num_stds   = ARRAY_SIZE(standard),
      .std_callback     = &std_callback,

      .ioctls           = &ioctls[0],
      .ioctl            = av7110_ioctl,

      .vbi_fops.open    = av7110_vbi_reset,
      .vbi_fops.release = av7110_vbi_reset,
      .vbi_fops.write   = av7110_vbi_write,
};


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