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
a800_power_ctrl(struct dvb_usb_device * d,int onoff)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 */
a800_identify_state(struct usb_device * udev,const struct dvb_usb_device_properties * props,const struct dvb_usb_device_description ** desc,int * cold)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
a800_rc_query(struct dvb_usb_device * d)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
a800_probe(struct usb_interface * intf,const struct usb_device_id * id)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");
154
