root/drivers/media/usb/dvb-usb/a800.c

DEFINITIONS

1. a800_power_ctrl
2. a800_identify_state
3. a800_rc_query
4. a800_probe

   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/media/dvb-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, struct dvb_usb_device_properties *props,
  31         struct dvb_usb_device_description **desc, int *cold)
  32 {
  33         *cold = udev->descriptor.iManufacturer != 1;
  34         return 0;
  35 }
  36 
  37 static int a800_rc_query(struct dvb_usb_device *d)
  38 {
  39         int ret = 0;
  40         u8 *key = kmalloc(5, GFP_KERNEL);
  41         if (!key)
  42                 return -ENOMEM;
  43 
  44         if (usb_control_msg(d->udev,usb_rcvctrlpipe(d->udev,0),
  45                                 0x04, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, key, 5,
  46                                 2000) != 5) {
  47                 ret = -ENODEV;
  48                 goto out;
  49         }
  50 
  51         /* Note that extended nec and nec32 are dropped */
  52         if (key[0] == 1)
  53                 rc_keydown(d->rc_dev, RC_PROTO_NEC,
  54                            RC_SCANCODE_NEC(key[1], key[3]), 0);
  55         else if (key[0] == 2)
  56                 rc_repeat(d->rc_dev);
  57 out:
  58         kfree(key);
  59         return ret;
  60 }
  61 
  62 /* USB Driver stuff */
  63 static struct dvb_usb_device_properties a800_properties;
  64 
  65 static int a800_probe(struct usb_interface *intf,
  66                 const struct usb_device_id *id)
  67 {
  68         return dvb_usb_device_init(intf, &a800_properties,
  69                                    THIS_MODULE, NULL, adapter_nr);
  70 }
  71 
  72 /* do not change the order of the ID table */
  73 static struct usb_device_id a800_table [] = {
  74 /* 00 */        { USB_DEVICE(USB_VID_AVERMEDIA,     USB_PID_AVERMEDIA_DVBT_USB2_COLD) },
  75 /* 01 */        { USB_DEVICE(USB_VID_AVERMEDIA,     USB_PID_AVERMEDIA_DVBT_USB2_WARM) },
  76                         { }             /* Terminating entry */
  77 };
  78 MODULE_DEVICE_TABLE (usb, a800_table);
  79 
  80 static struct dvb_usb_device_properties a800_properties = {
  81         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
  82 
  83         .usb_ctrl = CYPRESS_FX2,
  84         .firmware = "dvb-usb-avertv-a800-02.fw",
  85 
  86         .num_adapters = 1,
  87         .adapter = {
  88                 {
  89                 .num_frontends = 1,
  90                 .fe = {{
  91                         .caps = DVB_USB_ADAP_HAS_PID_FILTER | DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
  92                         .pid_filter_count = 32,
  93                         .streaming_ctrl   = dibusb2_0_streaming_ctrl,
  94                         .pid_filter       = dibusb_pid_filter,
  95                         .pid_filter_ctrl  = dibusb_pid_filter_ctrl,
  96 
  97                         .frontend_attach  = dibusb_dib3000mc_frontend_attach,
  98                         .tuner_attach     = dibusb_dib3000mc_tuner_attach,
  99 
 100                         /* parameter for the MPEG2-data transfer */
 101                                         .stream = {
 102                                                 .type = USB_BULK,
 103                                 .count = 7,
 104                                 .endpoint = 0x06,
 105                                 .u = {
 106                                         .bulk = {
 107                                                 .buffersize = 4096,
 108                                         }
 109                                 }
 110                         },
 111                 }},
 112                         .size_of_priv     = sizeof(struct dibusb_state),
 113                 },
 114         },
 115 
 116         .power_ctrl       = a800_power_ctrl,
 117         .identify_state   = a800_identify_state,
 118 
 119         .rc.core = {
 120                 .rc_interval    = DEFAULT_RC_INTERVAL,
 121                 .rc_codes       = RC_MAP_AVERMEDIA_M135A,
 122                 .module_name    = KBUILD_MODNAME,
 123                 .rc_query       = a800_rc_query,
 124                 .allowed_protos = RC_PROTO_BIT_NEC,
 125         },
 126 
 127         .i2c_algo         = &dibusb_i2c_algo,
 128 
 129         .generic_bulk_ctrl_endpoint = 0x01,
 130         .num_device_descs = 1,
 131         .devices = {
 132                 {   "AVerMedia AverTV DVB-T USB 2.0 (A800)",
 133                         { &a800_table[0], NULL },
 134                         { &a800_table[1], NULL },
 135                 },
 136         }
 137 };
 138 
 139 static struct usb_driver a800_driver = {
 140         .name           = "dvb_usb_a800",
 141         .probe          = a800_probe,
 142         .disconnect = dvb_usb_device_exit,
 143         .id_table       = a800_table,
 144 };
 145 
 146 module_usb_driver(a800_driver);
 147 
 148 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
 149 MODULE_DESCRIPTION("AVerMedia AverTV DVB-T USB 2.0 (A800)");
 150 MODULE_VERSION("1.0");
 151 MODULE_LICENSE("GPL");