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 = "dvb-usb-avertv-a800-02.fw", 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"); 160