xref: /openbmc/linux/drivers/media/usb/dvb-usb/a800.c (revision 1c64fd9c)
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 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