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"); 152