a800.c

  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 */
 75enum {
 76	AVERMEDIA_DVBT_USB2_COLD,
 77	AVERMEDIA_DVBT_USB2_WARM,
 78};
 79
 80static const 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");