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opera1.c

/* DVB USB framework compliant Linux driver for the Opera1 DVB-S Card
*
* Copyright (C) 2006 Mario Hlawitschka (dh1pa@amsat.org)
* Copyright (C) 2006 Marco Gittler (g.marco@freenet.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, version 2.
*
* see Documentation/dvb/README.dvb-usb for more information
*/

#include "opera1.h"
#include "stv0299.h"

#define OPERA_READ_MSG 0
#define OPERA_WRITE_MSG 1
#define OPERA_I2C_TUNER 0xd1

#define READ_FX2_REG_REQ  0xba
#define READ_MAC_ADDR 0x08
#define OPERA_WRITE_FX2 0xbb
#define OPERA_TUNER_REQ 0xb1
#define REG_1F_SYMBOLRATE_BYTE0 0x1f
#define REG_20_SYMBOLRATE_BYTE1 0x20
#define REG_21_SYMBOLRATE_BYTE2 0x21

#define ADDR_B600_VOLTAGE_13V (0x02)
#define ADDR_B601_VOLTAGE_18V (0x03)
#define ADDR_B1A6_STREAM_CTRL (0x04)
#define ADDR_B880_READ_REMOTE (0x05)

struct opera1_state {
      u32 last_key_pressed;
};
struct opera_rc_keys {
      u32 keycode;
      u32 event;
};

int dvb_usb_opera1_debug;
module_param_named(debug, dvb_usb_opera1_debug, int, 0644);
MODULE_PARM_DESC(debug,
             "set debugging level (1=info,xfer=2,pll=4,ts=8,err=16,rc=32,fw=64 (or-able))."
             DVB_USB_DEBUG_STATUS);

static int opera1_xilinx_rw(struct usb_device *dev, u8 request, u16 value,
                      u8 * data, u16 len, int flags)
{
      int ret;
      u8 r;
      u8 u8buf[len];

      unsigned int pipe = (flags == OPERA_READ_MSG) ?
            usb_rcvctrlpipe(dev,0) : usb_sndctrlpipe(dev, 0);
      u8 request_type = (flags == OPERA_READ_MSG) ? USB_DIR_IN : USB_DIR_OUT;

      if (flags == OPERA_WRITE_MSG)
            memcpy(u8buf, data, len);
      ret =
            usb_control_msg(dev, pipe, request, request_type | USB_TYPE_VENDOR,
                  value, 0x0, u8buf, len, 2000);

      if (request == OPERA_TUNER_REQ) {
            if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
                        OPERA_TUNER_REQ, USB_DIR_IN | USB_TYPE_VENDOR,
                        0x01, 0x0, &r, 1, 2000)<1 || r!=0x08)
                              return 0;
      }
      if (flags == OPERA_READ_MSG)
            memcpy(data, u8buf, len);
      return ret;
}

/* I2C */

static int opera1_usb_i2c_msgxfer(struct dvb_usb_device *dev, u16 addr,
                          u8 * buf, u16 len)
{
      int ret = 0;
      u8 request;
      u16 value;

      if (!dev) {
            info("no usb_device");
            return -EINVAL;
      }
      if (mutex_lock_interruptible(&dev->usb_mutex) < 0)
            return -EAGAIN;

      switch (addr>>1){
            case ADDR_B600_VOLTAGE_13V:
                  request=0xb6;
                  value=0x00;
                  break;
            case ADDR_B601_VOLTAGE_18V:
                  request=0xb6;
                  value=0x01;
                  break;
            case ADDR_B1A6_STREAM_CTRL:
                  request=0xb1;
                  value=0xa6;
                  break;
            case ADDR_B880_READ_REMOTE:
                  request=0xb8;
                  value=0x80;
                  break;
            default:
                  request=0xb1;
                  value=addr;
      }
      ret = opera1_xilinx_rw(dev->udev, request,
            value, buf, len,
            addr&0x01?OPERA_READ_MSG:OPERA_WRITE_MSG);

      mutex_unlock(&dev->usb_mutex);
      return ret;
}

static int opera1_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
                     int num)
{
      struct dvb_usb_device *d = i2c_get_adapdata(adap);
      int i = 0, tmp = 0;

      if (!d)
            return -ENODEV;
      if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
            return -EAGAIN;

      for (i = 0; i < num; i++) {
            if ((tmp = opera1_usb_i2c_msgxfer(d,
                              (msg[i].addr<<1)|(msg[i].flags&I2C_M_RD?0x01:0),
                              msg[i].buf,
                              msg[i].len
                              )!= msg[i].len)) {
                  break;
            }
            if (dvb_usb_opera1_debug & 0x10)
                  info("sending i2c mesage %d %d", tmp, msg[i].len);
      }
      mutex_unlock(&d->i2c_mutex);
      return num;
}

static u32 opera1_i2c_func(struct i2c_adapter *adapter)
{
      return I2C_FUNC_I2C;
}

static struct i2c_algorithm opera1_i2c_algo = {
      .master_xfer = opera1_i2c_xfer,
      .functionality = opera1_i2c_func,
};

static int opera1_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
{
      static u8 command_13v[1]={0x00};
      static u8 command_18v[1]={0x01};
      struct i2c_msg msg[] = {
            {.addr = ADDR_B600_VOLTAGE_13V,.flags = 0,.buf = command_13v,.len = 1},
      };
      struct dvb_usb_adapter *udev_adap =
          (struct dvb_usb_adapter *)(fe->dvb->priv);
      if (voltage == SEC_VOLTAGE_18) {
            msg[0].addr = ADDR_B601_VOLTAGE_18V;
            msg[0].buf = command_18v;
      }
      i2c_transfer(&udev_adap->dev->i2c_adap, msg, 1);
      return 0;
}

static int opera1_stv0299_set_symbol_rate(struct dvb_frontend *fe, u32 srate,
                                u32 ratio)
{
      stv0299_writereg(fe, 0x13, 0x98);
      stv0299_writereg(fe, 0x14, 0x95);
      stv0299_writereg(fe, REG_1F_SYMBOLRATE_BYTE0, (ratio >> 16) & 0xff);
      stv0299_writereg(fe, REG_20_SYMBOLRATE_BYTE1, (ratio >> 8) & 0xff);
      stv0299_writereg(fe, REG_21_SYMBOLRATE_BYTE2, (ratio) & 0xf0);
      return 0;

}
static u8 opera1_inittab[] = {
      0x00, 0xa1,
      0x01, 0x15,
      0x02, 0x00,
      0x03, 0x00,
      0x04, 0x7d,
      0x05, 0x05,
      0x06, 0x02,
      0x07, 0x00,
      0x0b, 0x00,
      0x0c, 0x01,
      0x0d, 0x81,
      0x0e, 0x44,
      0x0f, 0x19,
      0x10, 0x3f,
      0x11, 0x84,
      0x12, 0xda,
      0x13, 0x98,
      0x14, 0x95,
      0x15, 0xc9,
      0x16, 0xeb,
      0x17, 0x00,
      0x18, 0x19,
      0x19, 0x8b,
      0x1a, 0x00,
      0x1b, 0x82,
      0x1c, 0x7f,
      0x1d, 0x00,
      0x1e, 0x00,
      REG_1F_SYMBOLRATE_BYTE0, 0x06,
      REG_20_SYMBOLRATE_BYTE1, 0x50,
      REG_21_SYMBOLRATE_BYTE2, 0x10,
      0x22, 0x00,
      0x23, 0x00,
      0x24, 0x37,
      0x25, 0xbc,
      0x26, 0x00,
      0x27, 0x00,
      0x28, 0x00,
      0x29, 0x1e,
      0x2a, 0x14,
      0x2b, 0x1f,
      0x2c, 0x09,
      0x2d, 0x0a,
      0x2e, 0x00,
      0x2f, 0x00,
      0x30, 0x00,
      0x31, 0x1f,
      0x32, 0x19,
      0x33, 0xfc,
      0x34, 0x13,
      0xff, 0xff,
};

static struct stv0299_config opera1_stv0299_config = {
      .demod_address = 0xd0>>1,
      .min_delay_ms = 100,
      .mclk = 88000000UL,
      .invert = 1,
      .skip_reinit = 0,
      .lock_output = STV0229_LOCKOUTPUT_0,
      .volt13_op0_op1 = STV0299_VOLT13_OP0,
      .inittab = opera1_inittab,
      .set_symbol_rate = opera1_stv0299_set_symbol_rate,
};

static int opera1_frontend_attach(struct dvb_usb_adapter *d)
{
      if ((d->fe =
           dvb_attach(stv0299_attach, &opera1_stv0299_config,
                  &d->dev->i2c_adap)) != NULL) {
            d->fe->ops.set_voltage = opera1_set_voltage;
            return 0;
      }
      info("not attached stv0299");
      return -EIO;
}

static int opera1_tuner_attach(struct dvb_usb_adapter *adap)
{
      dvb_attach(
            dvb_pll_attach, adap->fe, 0xc0>>1,
            &adap->dev->i2c_adap, DVB_PLL_OPERA1
      );
      return 0;
}

static int opera1_power_ctrl(struct dvb_usb_device *d, int onoff)
{
      u8 val = onoff ? 0x01 : 0x00;

      if (dvb_usb_opera1_debug)
            info("power %s", onoff ? "on" : "off");
      return opera1_xilinx_rw(d->udev, 0xb7, val,
                        &val, 1, OPERA_WRITE_MSG);
}

static int opera1_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
      static u8 buf_start[2] = { 0xff, 0x03 };
      static u8 buf_stop[2] = { 0xff, 0x00 };
      struct i2c_msg start_tuner[] = {
            {.addr = ADDR_B1A6_STREAM_CTRL,.buf = onoff ? buf_start : buf_stop,.len = 2},
      };
      if (dvb_usb_opera1_debug)
            info("streaming %s", onoff ? "on" : "off");
      i2c_transfer(&adap->dev->i2c_adap, start_tuner, 1);
      return 0;
}

static int opera1_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid,
                       int onoff)
{
      u8 b_pid[3];
      struct i2c_msg msg[] = {
            {.addr = ADDR_B1A6_STREAM_CTRL,.buf = b_pid,.len = 3},
      };
      if (dvb_usb_opera1_debug)
            info("pidfilter index: %d pid: %d %s", index, pid,
                  onoff ? "on" : "off");
      b_pid[0] = (2 * index) + 4;
      b_pid[1] = onoff ? (pid & 0xff) : (0x00);
      b_pid[2] = onoff ? ((pid >> 8) & 0xff) : (0x00);
      i2c_transfer(&adap->dev->i2c_adap, msg, 1);
      return 0;
}

static int opera1_pid_filter_control(struct dvb_usb_adapter *adap, int onoff)
{
      int u = 0x04;
      u8 b_pid[3];
      struct i2c_msg msg[] = {
            {.addr = ADDR_B1A6_STREAM_CTRL,.buf = b_pid,.len = 3},
      };
      if (dvb_usb_opera1_debug)
            info("%s hw-pidfilter", onoff ? "enable" : "disable");
      for (; u < 0x7e; u += 2) {
            b_pid[0] = u;
            b_pid[1] = 0;
            b_pid[2] = 0x80;
            i2c_transfer(&adap->dev->i2c_adap, msg, 1);
      }
      return 0;
}

static struct dvb_usb_rc_key opera1_rc_keys[] = {
      {0x5f, 0xa0, KEY_1},
      {0x51, 0xaf, KEY_2},
      {0x5d, 0xa2, KEY_3},
      {0x41, 0xbe, KEY_4},
      {0x0b, 0xf5, KEY_5},
      {0x43, 0xbd, KEY_6},
      {0x47, 0xb8, KEY_7},
      {0x49, 0xb6, KEY_8},
      {0x05, 0xfa, KEY_9},
      {0x45, 0xba, KEY_0},
      {0x09, 0xf6, KEY_UP},   /*chanup */
      {0x1b, 0xe5, KEY_DOWN}, /*chandown */
      {0x5d, 0xa3, KEY_LEFT}, /*voldown */
      {0x5f, 0xa1, KEY_RIGHT},      /*volup */
      {0x07, 0xf8, KEY_SPACE},      /*tab */
      {0x1f, 0xe1, KEY_ENTER},      /*play ok */
      {0x1b, 0xe4, KEY_Z},    /*zoom */
      {0x59, 0xa6, KEY_M},    /*mute */
      {0x5b, 0xa5, KEY_F},    /*tv/f */
      {0x19, 0xe7, KEY_R},    /*rec */
      {0x01, 0xfe, KEY_S},    /*Stop */
      {0x03, 0xfd, KEY_P},    /*pause */
      {0x03, 0xfc, KEY_W},    /*<- -> */
      {0x07, 0xf9, KEY_C},    /*capture */
      {0x47, 0xb9, KEY_Q},    /*exit */
      {0x43, 0xbc, KEY_O},    /*power */

};

static int opera1_rc_query(struct dvb_usb_device *dev, u32 * event, int *state)
{
      struct opera1_state *opst = dev->priv;
      u8 rcbuffer[32];
      const u16 startmarker1 = 0x10ed;
      const u16 startmarker2 = 0x11ec;
      struct i2c_msg read_remote[] = {
            {.addr = ADDR_B880_READ_REMOTE,.buf = rcbuffer,.flags = I2C_M_RD,.len = 32},
      };
      int i = 0;
      u32 send_key = 0;

      if (i2c_transfer(&dev->i2c_adap, read_remote, 1) == 1) {
            for (i = 0; i < 32; i++) {
                  if (rcbuffer[i])
                        send_key |= 1;
                  if (i < 31)
                        send_key = send_key << 1;
            }
            if (send_key & 0x8000)
                  send_key = (send_key << 1) | (send_key >> 15 & 0x01);

            if (send_key == 0xffff && opst->last_key_pressed != 0) {
                  *state = REMOTE_KEY_REPEAT;
                  *event = opst->last_key_pressed;
                  return 0;
            }
            for (; send_key != 0;) {
                  if (send_key >> 16 == startmarker2) {
                        break;
                  } else if (send_key >> 16 == startmarker1) {
                        send_key =
                              (send_key & 0xfffeffff) | (startmarker1 << 16);
                        break;
                  } else
                        send_key >>= 1;
            }

            if (send_key == 0)
                  return 0;

            send_key = (send_key & 0xffff) | 0x0100;

            for (i = 0; i < ARRAY_SIZE(opera1_rc_keys); i++) {
                  if ((opera1_rc_keys[i].custom * 256 +
                              opera1_rc_keys[i].data) == (send_key & 0xffff)) {
                        *state = REMOTE_KEY_PRESSED;
                        *event = opera1_rc_keys[i].event;
                        opst->last_key_pressed =
                              opera1_rc_keys[i].event;
                        break;
                  }
                  opst->last_key_pressed = 0;
            }
      } else
            *state = REMOTE_NO_KEY_PRESSED;
      return 0;
}

static struct usb_device_id opera1_table[] = {
      {USB_DEVICE(USB_VID_CYPRESS, USB_PID_OPERA1_COLD)},
      {USB_DEVICE(USB_VID_OPERA1, USB_PID_OPERA1_WARM)},
      {}
};

MODULE_DEVICE_TABLE(usb, opera1_table);

static int opera1_read_mac_address(struct dvb_usb_device *d, u8 mac[6])
{
      u8 command[] = { READ_MAC_ADDR };
      opera1_xilinx_rw(d->udev, 0xb1, 0xa0, command, 1, OPERA_WRITE_MSG);
      opera1_xilinx_rw(d->udev, 0xb1, 0xa1, mac, 6, OPERA_READ_MSG);
      return 0;
}
static int opera1_xilinx_load_firmware(struct usb_device *dev,
                               const char *filename)
{
      const struct firmware *fw = NULL;
      u8 *b, *p;
      int ret = 0, i,fpgasize=40;
      u8 testval;
      info("start downloading fpga firmware %s",filename);

      if ((ret = request_firmware(&fw, filename, &dev->dev)) != 0) {
            err("did not find the firmware file. (%s) "
                  "Please see linux/Documentation/dvb/ for more details on firmware-problems.",
                  filename);
            return ret;
      } else {
            p = kmalloc(fw->size, GFP_KERNEL);
            opera1_xilinx_rw(dev, 0xbc, 0x00, &testval, 1, OPERA_READ_MSG);
            if (p != NULL && testval != 0x67) {

                  u8 reset = 0, fpga_command = 0;
                  memcpy(p, fw->data, fw->size);
                  /* clear fpga ? */
                  opera1_xilinx_rw(dev, 0xbc, 0xaa, &fpga_command, 1,
                               OPERA_WRITE_MSG);
                  for (i = 0; i < fw->size;) {
                        if ( (fw->size - i) <fpgasize){
                            fpgasize=fw->size-i;
                        }
                        b = (u8 *) p + i;
                        if (opera1_xilinx_rw
                              (dev, OPERA_WRITE_FX2, 0x0, b , fpgasize,
                                    OPERA_WRITE_MSG) != fpgasize
                              ) {
                              err("error while transferring firmware");
                              ret = -EINVAL;
                              break;
                        }
                        i = i + fpgasize;
                  }
                  /* restart the CPU */
                  if (ret || opera1_xilinx_rw
                              (dev, 0xa0, 0xe600, &reset, 1,
                              OPERA_WRITE_MSG) != 1) {
                        err("could not restart the USB controller CPU.");
                        ret = -EINVAL;
                  }
                  kfree(p);
            }
      }
      if (fw) {
            release_firmware(fw);
      }
      return ret;
}

static struct dvb_usb_device_properties opera1_properties = {
      .caps = DVB_USB_IS_AN_I2C_ADAPTER,
      .usb_ctrl = CYPRESS_FX2,
      .firmware = "dvb-usb-opera-01.fw",
      .size_of_priv = sizeof(struct opera1_state),

      .power_ctrl = opera1_power_ctrl,
      .i2c_algo = &opera1_i2c_algo,

      .rc_key_map = opera1_rc_keys,
      .rc_key_map_size = ARRAY_SIZE(opera1_rc_keys),
      .rc_interval = 200,
      .rc_query = opera1_rc_query,
      .read_mac_address = opera1_read_mac_address,
      .generic_bulk_ctrl_endpoint = 0x00,
      /* parameter for the MPEG2-data transfer */
      .num_adapters = 1,
      .adapter = {
            {
                  .frontend_attach = opera1_frontend_attach,
                  .streaming_ctrl = opera1_streaming_ctrl,
                  .tuner_attach = opera1_tuner_attach,
                  .caps =
                        DVB_USB_ADAP_HAS_PID_FILTER |
                        DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
                  .pid_filter = opera1_pid_filter,
                  .pid_filter_ctrl = opera1_pid_filter_control,
                  .pid_filter_count = 252,
                  .stream = {
                        .type = USB_BULK,
                        .count = 10,
                        .endpoint = 0x82,
                        .u = {
                              .bulk = {
                                    .buffersize = 4096,
                              }
                        }
                  },
            }
      },
      .num_device_descs = 1,
      .devices = {
            {"Opera1 DVB-S USB2.0",
                  {&opera1_table[0], NULL},
                  {&opera1_table[1], NULL},
            },
      }
};

static int opera1_probe(struct usb_interface *intf,
                  const struct usb_device_id *id)
{
      struct usb_device *udev = interface_to_usbdev(intf);

      if (udev->descriptor.idProduct == USB_PID_OPERA1_WARM &&
            udev->descriptor.idVendor == USB_VID_OPERA1 &&
            opera1_xilinx_load_firmware(udev, "dvb-usb-opera1-fpga-01.fw") != 0
          ) {
            return -EINVAL;
      }

      if (dvb_usb_device_init(intf, &opera1_properties, THIS_MODULE, NULL) != 0)
            return -EINVAL;
      return 0;
}

static struct usb_driver opera1_driver = {
      .name = "opera1",
      .probe = opera1_probe,
      .disconnect = dvb_usb_device_exit,
      .id_table = opera1_table,
};

static int __init opera1_module_init(void)
{
      int result = 0;
      if ((result = usb_register(&opera1_driver))) {
            err("usb_register failed. Error number %d", result);
      }
      return result;
}

static void __exit opera1_module_exit(void)
{
      usb_deregister(&opera1_driver);
}

module_init(opera1_module_init);
module_exit(opera1_module_exit);

MODULE_AUTHOR("Mario Hlawitschka (c) dh1pa@amsat.org");
MODULE_AUTHOR("Marco Gittler (c) g.marco@freenet.de");
MODULE_DESCRIPTION("Driver for Opera1 DVB-S device");
MODULE_VERSION("0.1");
MODULE_LICENSE("GPL");

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