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
15static int debug;
16module_param(debug, int, 0644);
17MODULE_PARM_DESC(debug, "set debugging level (rc=1 (or-able))." DVB_USB_DEBUG_STATUS);
18
19DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
20
21#define deb_rc(args...) dprintk(debug,0x01,args)
22
23static 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 */
30static 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
39static int a800_rc_query(struct dvb_usb_device *d)
40{
41 int ret = 0;
42 u8 *key = kmalloc(size: 5, GFP_KERNEL);
43 if (!key)
44 return -ENOMEM;
45
46 if (usb_control_msg(dev: d->udev,usb_rcvctrlpipe(d->udev,0),
47 request: 0x04, USB_TYPE_VENDOR | USB_DIR_IN, value: 0, index: 0, data: key, size: 5,
48 timeout: 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(dev: d->rc_dev, protocol: RC_PROTO_NEC,
56 RC_SCANCODE_NEC(key[1], key[3]), toggle: 0);
57 else if (key[0] == 2)
58 rc_repeat(dev: d->rc_dev);
59out:
60 kfree(objp: key);
61 return ret;
62}
63
64/* USB Driver stuff */
65static struct dvb_usb_device_properties a800_properties;
66
67static 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_nums: adapter_nr);
72}
73
74/* do not change the order of the ID table */
75enum {
76 AVERMEDIA_DVBT_USB2_COLD,
77 AVERMEDIA_DVBT_USB2_WARM,
78};
79
80static 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
86MODULE_DEVICE_TABLE (usb, a800_table);
87
88static 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
147static 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
154module_usb_driver(a800_driver);
155
156MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
157MODULE_DESCRIPTION("AVerMedia AverTV DVB-T USB 2.0 (A800)");
158MODULE_VERSION("1.0");
159MODULE_LICENSE("GPL");
160

source code of linux/drivers/media/usb/dvb-usb/a800.c