vp7045.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2/* DVB USB compliant Linux driver for the
  3 *  - TwinhanDTV Alpha/MagicBoxII USB2.0 DVB-T receiver
  4 *  - DigitalNow TinyUSB2 DVB-t receiver
  5 *
  6 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de)
  7 *
  8 * Thanks to Twinhan who kindly provided hardware and information.
  9 *
 10 * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information
 11 */
 12#include "vp7045.h"
 13
 14/* debug */
 15static int dvb_usb_vp7045_debug;
 16module_param_named(debug,dvb_usb_vp7045_debug, int, 0644);
 17MODULE_PARM_DESC(debug, "set debugging level (1=info,xfer=2,rc=4 (or-able))." DVB_USB_DEBUG_STATUS);
 18
 19DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
 20
 21#define deb_info(args...) dprintk(dvb_usb_vp7045_debug,0x01,args)
 22#define deb_xfer(args...) dprintk(dvb_usb_vp7045_debug,0x02,args)
 23#define deb_rc(args...)   dprintk(dvb_usb_vp7045_debug,0x04,args)
 24
 25int vp7045_usb_op(struct dvb_usb_device *d, u8 cmd, u8 *out, int outlen, u8 *in, int inlen, int msec)
 26{
 27	int ret = 0;
 28	u8 *buf = d->priv;
 29
 30	buf[0] = cmd;
 31
 32	if (outlen > 19)
 33		outlen = 19;
 34
 35	if (inlen > 11)
 36		inlen = 11;
 37
 38	ret = mutex_lock_interruptible(&d->usb_mutex);
 39	if (ret)
 40		return ret;
 41
 42	if (out != NULL && outlen > 0)
 43		memcpy(&buf[1], out, outlen);
 44
 45	deb_xfer("out buffer: ");
 46	debug_dump(buf, outlen+1, deb_xfer);
 47
 48
 49	if (usb_control_msg(d->udev,
 50			usb_sndctrlpipe(d->udev,0),
 51			TH_COMMAND_OUT, USB_TYPE_VENDOR | USB_DIR_OUT, 0, 0,
 52			buf, 20, 2000) != 20) {
 53		err("USB control message 'out' went wrong.");
 54		ret = -EIO;
 55		goto unlock;
 56	}
 57
 58	msleep(msec);
 59
 60	if (usb_control_msg(d->udev,
 61			usb_rcvctrlpipe(d->udev,0),
 62			TH_COMMAND_IN, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 63			buf, 12, 2000) != 12) {
 64		err("USB control message 'in' went wrong.");
 65		ret = -EIO;
 66		goto unlock;
 67	}
 68
 69	deb_xfer("in buffer: ");
 70	debug_dump(buf, 12, deb_xfer);
 71
 72	if (in != NULL && inlen > 0)
 73		memcpy(in, &buf[1], inlen);
 74
 75unlock:
 76	mutex_unlock(&d->usb_mutex);
 77
 78	return ret;
 79}
 80
 81u8 vp7045_read_reg(struct dvb_usb_device *d, u8 reg)
 82{
 83	u8 obuf[2] = { 0 },v;
 84	obuf[1] = reg;
 85
 86	vp7045_usb_op(d,TUNER_REG_READ,obuf,2,&v,1,30);
 87
 88	return v;
 89}
 90
 91static int vp7045_power_ctrl(struct dvb_usb_device *d, int onoff)
 92{
 93	u8 v = onoff;
 94	return vp7045_usb_op(d,SET_TUNER_POWER,&v,1,NULL,0,150);
 95}
 96
 97static int vp7045_rc_query(struct dvb_usb_device *d)
 98{
 99	int ret;
100	u8 key;
101
102	ret = vp7045_usb_op(d, RC_VAL_READ, NULL, 0, &key, 1, 20);
103	if (ret)
104		return ret;
105
106	deb_rc("remote query key: %x\n", key);
107
108	if (key != 0x44) {
109		/*
110		 * The 8 bit address isn't available, but since the remote uses
111		 * address 0 we'll use that. nec repeats are ignored too, even
112		 * though the remote sends them.
113		 */
114		rc_keydown(d->rc_dev, RC_PROTO_NEC, RC_SCANCODE_NEC(0, key), 0);
115	}
116
117	return 0;
118}
119
120static int vp7045_read_eeprom(struct dvb_usb_device *d,u8 *buf, int len, int offset)
121{
122	int i, ret;
123	u8 v, br[2];
124	for (i=0; i < len; i++) {
125		v = offset + i;
126		ret = vp7045_usb_op(d, GET_EE_VALUE, &v, 1, br, 2, 5);
127		if (ret)
128			return ret;
129
130		buf[i] = br[1];
131	}
132	deb_info("VP7045 EEPROM read (offs: %d, len: %d) : ", offset, i);
133	debug_dump(buf, i, deb_info);
134	return 0;
135}
136
137static int vp7045_read_mac_addr(struct dvb_usb_device *d,u8 mac[6])
138{
139	return vp7045_read_eeprom(d,mac, 6, MAC_0_ADDR);
140}
141
142static int vp7045_frontend_attach(struct dvb_usb_adapter *adap)
143{
144	u8 buf[255] = { 0 };
145
146	vp7045_usb_op(adap->dev,VENDOR_STRING_READ,NULL,0,buf,20,0);
147	buf[10] = '\0';
148	deb_info("firmware says: %s ",buf);
149
150	vp7045_usb_op(adap->dev,PRODUCT_STRING_READ,NULL,0,buf,20,0);
151	buf[10] = '\0';
152	deb_info("%s ",buf);
153
154	vp7045_usb_op(adap->dev,FW_VERSION_READ,NULL,0,buf,20,0);
155	buf[10] = '\0';
156	deb_info("v%s\n",buf);
157
158/*	Dump the EEPROM */
159/*	vp7045_read_eeprom(d,buf, 255, FX2_ID_ADDR); */
160
161	adap->fe_adap[0].fe = vp7045_fe_attach(adap->dev);
162
163	return 0;
164}
165
166static struct dvb_usb_device_properties vp7045_properties;
167
168static int vp7045_usb_probe(struct usb_interface *intf,
169		const struct usb_device_id *id)
170{
171	return dvb_usb_device_init(intf, &vp7045_properties,
172				   THIS_MODULE, NULL, adapter_nr);
173}
174
175enum {
176	VISIONPLUS_VP7045_COLD,
177	VISIONPLUS_VP7045_WARM,
178	VISIONPLUS_TINYUSB2_COLD,
179	VISIONPLUS_TINYUSB2_WARM,
180};
181
182static const struct usb_device_id vp7045_usb_table[] = {
183	DVB_USB_DEV(VISIONPLUS, VISIONPLUS_VP7045_COLD),
184	DVB_USB_DEV(VISIONPLUS, VISIONPLUS_VP7045_WARM),
185	DVB_USB_DEV(VISIONPLUS, VISIONPLUS_TINYUSB2_COLD),
186	DVB_USB_DEV(VISIONPLUS, VISIONPLUS_TINYUSB2_WARM),
187	{ }
188};
189
190MODULE_DEVICE_TABLE(usb, vp7045_usb_table);
191
192static struct dvb_usb_device_properties vp7045_properties = {
193	.usb_ctrl = CYPRESS_FX2,
194	.firmware = "dvb-usb-vp7045-01.fw",
195	.size_of_priv = 20,
196
197	.num_adapters = 1,
198	.adapter = {
199		{
200		.num_frontends = 1,
201		.fe = {{
202			.frontend_attach  = vp7045_frontend_attach,
203			/* parameter for the MPEG2-data transfer */
204			.stream = {
205				.type = USB_BULK,
206				.count = 7,
207				.endpoint = 0x02,
208				.u = {
209					.bulk = {
210						.buffersize = 4096,
211					}
212				}
213			},
214		}},
215		}
216	},
217	.power_ctrl       = vp7045_power_ctrl,
218	.read_mac_address = vp7045_read_mac_addr,
219
220	.rc.core = {
221		.rc_interval	= 400,
222		.rc_codes	= RC_MAP_TWINHAN_VP1027_DVBS,
223		.module_name    = KBUILD_MODNAME,
224		.rc_query	= vp7045_rc_query,
225		.allowed_protos = RC_PROTO_BIT_NEC,
226		.scancode_mask	= 0xff,
227	},
228
229	.num_device_descs = 2,
230	.devices = {
231		{ .name = "Twinhan USB2.0 DVB-T receiver (TwinhanDTV Alpha/MagicBox II)",
232		  .cold_ids = { &vp7045_usb_table[VISIONPLUS_VP7045_COLD], NULL },
233		  .warm_ids = { &vp7045_usb_table[VISIONPLUS_VP7045_WARM], NULL },
234		},
235		{ .name = "DigitalNow TinyUSB 2 DVB-t Receiver",
236		  .cold_ids = { &vp7045_usb_table[VISIONPLUS_TINYUSB2_COLD], NULL },
237		  .warm_ids = { &vp7045_usb_table[VISIONPLUS_TINYUSB2_WARM], NULL },
238		},
239		{ NULL },
240	}
241};
242
243/* usb specific object needed to register this driver with the usb subsystem */
244static struct usb_driver vp7045_usb_driver = {
245	.name		= "dvb_usb_vp7045",
246	.probe		= vp7045_usb_probe,
247	.disconnect	= dvb_usb_device_exit,
248	.id_table	= vp7045_usb_table,
249};
250
251module_usb_driver(vp7045_usb_driver);
252
253MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
254MODULE_DESCRIPTION("Driver for Twinhan MagicBox/Alpha and DNTV tinyUSB2 DVB-T USB2.0");
255MODULE_VERSION("1.0");
256MODULE_LICENSE("GPL");