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(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);
59out:
60	kfree(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_nr);
72}
73
74/* do not change the order of the ID table */
75static 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};
80MODULE_DEVICE_TABLE (usb, a800_table);
81
82static 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
141static 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
148module_usb_driver(a800_driver);
149
150MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
151MODULE_DESCRIPTION("AVerMedia AverTV DVB-T USB 2.0 (A800)");
152MODULE_VERSION("1.0");
153MODULE_LICENSE("GPL");
154