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
  15 static int debug;
  16 module_param(debug, int, 0644);
  17 MODULE_PARM_DESC(debug, "set debugging level (rc=1 (or-able))." DVB_USB_DEBUG_STATUS);
  18
  19 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  20
  21 #define deb_rc(args...)   dprintk(debug,0x01,args)
  22
  23 static 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 */
  30 static 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
  39 static 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);
  59 out:
  60         kfree(key);
  61         return ret;
  62 }
  63
  64 /* USB Driver stuff */
  65 static struct dvb_usb_device_properties a800_properties;
  66
  67 static 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 */
  75 static 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 };
  80 MODULE_DEVICE_TABLE (usb, a800_table);
  81
  82 static 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
 141 static 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
 148 module_usb_driver(a800_driver);
 149
 150 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
 151 MODULE_DESCRIPTION("AVerMedia AverTV DVB-T USB 2.0 (A800)");
 152 MODULE_VERSION("1.0");
 153 MODULE_LICENSE("GPL");