linux/drivers/media/usb/dvb-usb/digitv.h
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   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _DVB_USB_DIGITV_H_
   3#define _DVB_USB_DIGITV_H_
   4
   5#define DVB_USB_LOG_PREFIX "digitv"
   6#include "dvb-usb.h"
   7
   8struct digitv_state {
   9    int is_nxt6000;
  10};
  11
  12/* protocol (from usblogging and the SDK:
  13 *
  14 * Always 7 bytes bulk message(s) for controlling
  15 *
  16 * First byte describes the command. Reads are 2 consecutive transfer (as always).
  17 *
  18 * General structure:
  19 *
  20 * write or first message of a read:
  21 * <cmdbyte> VV <len> B0 B1 B2 B3
  22 *
  23 * second message of a read
  24 * <cmdbyte> VV <len> R0 R1 R2 R3
  25 *
  26 * whereas 0 < len <= 4
  27 *
  28 * I2C address is stored somewhere inside the device.
  29 *
  30 * 0x01 read from EEPROM
  31 *  VV = offset; B* = 0; R* = value(s)
  32 *
  33 * 0x02 read register of the COFDM
  34 *  VV = register; B* = 0; R* = value(s)
  35 *
  36 * 0x05 write register of the COFDM
  37 *  VV = register; B* = value(s);
  38 *
  39 * 0x06 write to the tuner (only for NXT6000)
  40 *  VV = 0; B* = PLL data; len = 4;
  41 *
  42 * 0x03 read remote control
  43 *  VV = 0; B* = 0; len = 4; R* = key
  44 *
  45 * 0x07 write to the remote (don't know why one should this, resetting ?)
  46 *  VV = 0; B* = key; len = 4;
  47 *
  48 * 0x08 write remote type
  49 *  VV = 0; B[0] = 0x01, len = 4
  50 *
  51 * 0x09 write device init
  52 *  TODO
  53 */
  54#define USB_READ_EEPROM         1
  55
  56#define USB_READ_COFDM          2
  57#define USB_WRITE_COFDM         5
  58
  59#define USB_WRITE_TUNER         6
  60
  61#define USB_READ_REMOTE         3
  62#define USB_WRITE_REMOTE        7
  63#define USB_WRITE_REMOTE_TYPE   8
  64
  65#define USB_DEV_INIT            9
  66
  67#endif
  68