LXR linux/drivers/media/usb/dvb-usb/a800.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/* DVB USB framework compliant Linux driver for the AVerMedia AverTV DVB-T
   3 * USB2.0 (A800) DVB-T receiver.
   4 *
   5 * Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@posteo.de)
   6 *
   7 * Thanks to
   8 *   - AVerMedia who kindly provided information and
   9 *   - Glen Harris who suffered from my mistakes during development.
  10 *
  11 * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information
  12 */
  13#include "dibusb.h"
  14
  15static int debug;
  16module_param(debug, int, 0644);
  17MODULE_PARM_DESC(debug, "set debugging level (rc=1 (or-able))." DVB_USB_DEBUG_STATUS);
  18
  19DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  20
  21#define deb_rc(args...)   dprintk(debug,0x01,args)
  22
  23static int a800_power_ctrl(struct dvb_usb_device *d, int onoff)
  24{
  25        /* do nothing for the AVerMedia */
  26        return 0;
  27}
  28
  29/* assure to put cold to 0 for iManufacturer == 1 */
  30static int a800_identify_state(struct usb_device *udev,
  31                               const struct dvb_usb_device_properties *props,
  32                               const struct dvb_usb_device_description **desc,
  33                               int *cold)
  34{
  35        *cold = udev->descriptor.iManufacturer != 1;
  36        return 0;
  37}
  38
  39static int a800_rc_query(struct dvb_usb_device *d)
  40{
  41        int ret = 0;
  42        u8 *key = kmalloc(5, GFP_KERNEL);
  43        if (!key)
  44                return -ENOMEM;
  45
  46        if (usb_control_msg(d->udev,usb_rcvctrlpipe(d->udev,0),
  47                                0x04, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, key, 5,
  48                                2000) != 5) {
  49                ret = -ENODEV;
  50                goto out;
  51        }
  52
  53        /* Note that extended nec and nec32 are dropped */
  54        if (key[0] == 1)
  55                rc_keydown(d->rc_dev, RC_PROTO_NEC,
  56                           RC_SCANCODE_NEC(key[1], key[3]), 0);
  57        else if (key[0] == 2)
  58                rc_repeat(d->rc_dev);
  59out:
  60        kfree(key);
  61        return ret;
  62}
  63
  64/* USB Driver stuff */
  65static struct dvb_usb_device_properties a800_properties;
  66
  67static int a800_probe(struct usb_interface *intf,
  68                const struct usb_device_id *id)
  69{
  70        return dvb_usb_device_init(intf, &a800_properties,
  71                                   THIS_MODULE, NULL, adapter_nr);
  72}
  73
  74/* do not change the order of the ID table */
  75static struct usb_device_id a800_table [] = {
  76/* 00 */        { USB_DEVICE(USB_VID_AVERMEDIA,     USB_PID_AVERMEDIA_DVBT_USB2_COLD) },
  77/* 01 */        { USB_DEVICE(USB_VID_AVERMEDIA,     USB_PID_AVERMEDIA_DVBT_USB2_WARM) },
  78                        { }             /* Terminating entry */
  79};
  80MODULE_DEVICE_TABLE (usb, a800_table);
  81
  82static struct dvb_usb_device_properties a800_properties = {
  83        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
  84
  85        .usb_ctrl = CYPRESS_FX2,
  86        .firmware = "dvb-usb-avertv-a800-02.fw",
  87
  88        .num_adapters = 1,
  89        .adapter = {
  90                {
  91                .num_frontends = 1,
  92                .fe = {{
  93                        .caps = DVB_USB_ADAP_HAS_PID_FILTER | DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
  94                        .pid_filter_count = 32,
  95                        .streaming_ctrl   = dibusb2_0_streaming_ctrl,
  96                        .pid_filter       = dibusb_pid_filter,
  97                        .pid_filter_ctrl  = dibusb_pid_filter_ctrl,
  98
  99                        .frontend_attach  = dibusb_dib3000mc_frontend_attach,
 100                        .tuner_attach     = dibusb_dib3000mc_tuner_attach,
 101
 102                        /* parameter for the MPEG2-data transfer */
 103                                        .stream = {
 104                                                .type = USB_BULK,
 105                                .count = 7,
 106                                .endpoint = 0x06,
 107                                .u = {
 108                                        .bulk = {
 109                                                .buffersize = 4096,
 110                                        }
 111                                }
 112                        },
 113                }},
 114                        .size_of_priv     = sizeof(struct dibusb_state),
 115                },
 116        },
 117
 118        .power_ctrl       = a800_power_ctrl,
 119        .identify_state   = a800_identify_state,
 120
 121        .rc.core = {
 122                .rc_interval    = DEFAULT_RC_INTERVAL,
 123                .rc_codes       = RC_MAP_AVERMEDIA_M135A,
 124                .module_name    = KBUILD_MODNAME,
 125                .rc_query       = a800_rc_query,
 126                .allowed_protos = RC_PROTO_BIT_NEC,
 127        },
 128
 129        .i2c_algo         = &dibusb_i2c_algo,
 130
 131        .generic_bulk_ctrl_endpoint = 0x01,
 132        .num_device_descs = 1,
 133        .devices = {
 134                {   "AVerMedia AverTV DVB-T USB 2.0 (A800)",
 135                        { &a800_table[0], NULL },
 136                        { &a800_table[1], NULL },
 137                },
 138        }
 139};
 140
 141static struct usb_driver a800_driver = {
 142        .name           = "dvb_usb_a800",
 143        .probe          = a800_probe,
 144        .disconnect = dvb_usb_device_exit,
 145        .id_table       = a800_table,
 146};
 147
 148module_usb_driver(a800_driver);
 149
 150MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
 151MODULE_DESCRIPTION("AVerMedia AverTV DVB-T USB 2.0 (A800)");
 152MODULE_VERSION("1.0");
 153MODULE_LICENSE("GPL");
 154