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 enum {
  76         AVERMEDIA_DVBT_USB2_COLD,
  77         AVERMEDIA_DVBT_USB2_WARM,
  78 };
  79
  80 static struct usb_device_id a800_table[] = {
  81         DVB_USB_DEV(AVERMEDIA, AVERMEDIA_DVBT_USB2_COLD),
  82         DVB_USB_DEV(AVERMEDIA, AVERMEDIA_DVBT_USB2_WARM),
  83         { }
  84 };
  85
  86 MODULE_DEVICE_TABLE (usb, a800_table);
  87
  88 static struct dvb_usb_device_properties a800_properties = {
  89         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
  90
  91         .usb_ctrl = CYPRESS_FX2,
  92         .firmware = "/*(DEBLOBBED)*/",
  93
  94         .num_adapters = 1,
  95         .adapter = {
  96                 {
  97                 .num_frontends = 1,
  98                 .fe = {{
  99                         .caps = DVB_USB_ADAP_HAS_PID_FILTER | DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
 100                         .pid_filter_count = 32,
 101                         .streaming_ctrl   = dibusb2_0_streaming_ctrl,
 102                         .pid_filter       = dibusb_pid_filter,
 103                         .pid_filter_ctrl  = dibusb_pid_filter_ctrl,
 104
 105                         .frontend_attach  = dibusb_dib3000mc_frontend_attach,
 106                         .tuner_attach     = dibusb_dib3000mc_tuner_attach,
 107
 108                         /* parameter for the MPEG2-data transfer */
 109                                         .stream = {
 110                                                 .type = USB_BULK,
 111                                 .count = 7,
 112                                 .endpoint = 0x06,
 113                                 .u = {
 114                                         .bulk = {
 115                                                 .buffersize = 4096,
 116                                         }
 117                                 }
 118                         },
 119                 }},
 120                         .size_of_priv     = sizeof(struct dibusb_state),
 121                 },
 122         },
 123
 124         .power_ctrl       = a800_power_ctrl,
 125         .identify_state   = a800_identify_state,
 126
 127         .rc.core = {
 128                 .rc_interval    = DEFAULT_RC_INTERVAL,
 129                 .rc_codes       = RC_MAP_AVERMEDIA_M135A,
 130                 .module_name    = KBUILD_MODNAME,
 131                 .rc_query       = a800_rc_query,
 132                 .allowed_protos = RC_PROTO_BIT_NEC,
 133         },
 134
 135         .i2c_algo         = &dibusb_i2c_algo,
 136
 137         .generic_bulk_ctrl_endpoint = 0x01,
 138         .num_device_descs = 1,
 139         .devices = {
 140                 {   "AVerMedia AverTV DVB-T USB 2.0 (A800)",
 141                         { &a800_table[AVERMEDIA_DVBT_USB2_COLD], NULL },
 142                         { &a800_table[AVERMEDIA_DVBT_USB2_WARM], NULL },
 143                 },
 144         }
 145 };
 146
 147 static struct usb_driver a800_driver = {
 148         .name           = "dvb_usb_a800",
 149         .probe          = a800_probe,
 150         .disconnect = dvb_usb_device_exit,
 151         .id_table       = a800_table,
 152 };
 153
 154 module_usb_driver(a800_driver);
 155
 156 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
 157 MODULE_DESCRIPTION("AVerMedia AverTV DVB-T USB 2.0 (A800)");
 158 MODULE_VERSION("1.0");
 159 MODULE_LICENSE("GPL");