aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/dvb/dvb-usb/gp8psk.c
blob: 9a98f3fdae318c98a019ce20497372ce3fb9d8e9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
/* DVB USB compliant Linux driver for the
 *  - GENPIX 8pks/qpsk USB2.0 DVB-S module
 *
 * Copyright (C) 2006 Alan Nisota (alannisota@gmail.com)
 *
 * Thanks to GENPIX for the sample code used to implement this module.
 *
 * This module is based off the vp7045 and vp702x modules
 *
 *	This program is free software; you can redistribute it and/or modify it
 *	under the terms of the GNU General Public License as published by the Free
 *	Software Foundation, version 2.
 *
 * see Documentation/dvb/README.dvb-usb for more information
 */
#include "gp8psk.h"

/* debug */
static char bcm4500_firmware[] = "dvb-usb-gp8psk-02.fw";
int dvb_usb_gp8psk_debug;
module_param_named(debug,dvb_usb_gp8psk_debug, int, 0644);
MODULE_PARM_DESC(debug, "set debugging level (1=info,xfer=2,rc=4 (or-able))." DVB_USB_DEBUG_STATUS);

int gp8psk_usb_in_op(struct dvb_usb_device *d, u8 req, u16 value, u16 index, u8 *b, int blen)
{
	int ret = 0,try = 0;

	if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
		return ret;

	while (ret >= 0 && ret != blen && try < 3) {
		ret = usb_control_msg(d->udev,
			usb_rcvctrlpipe(d->udev,0),
			req,
			USB_TYPE_VENDOR | USB_DIR_IN,
			value,index,b,blen,
			2000);
		deb_info("reading number %d (ret: %d)\n",try,ret);
		try++;
	}

	if (ret < 0 || ret != blen) {
		warn("usb in operation failed.");
		ret = -EIO;
	} else
		ret = 0;

	deb_xfer("in: req. %x, val: %x, ind: %x, buffer: ",req,value,index);
	debug_dump(b,blen,deb_xfer);

	mutex_unlock(&d->usb_mutex);

	return ret;
}

int gp8psk_usb_out_op(struct dvb_usb_device *d, u8 req, u16 value,
			     u16 index, u8 *b, int blen)
{
	int ret;

	deb_xfer("out: req. %x, val: %x, ind: %x, buffer: ",req,value,index);
	debug_dump(b,blen,deb_xfer);

	if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
		return ret;

	if (usb_control_msg(d->udev,
			usb_sndctrlpipe(d->udev,0),
			req,
			USB_TYPE_VENDOR | USB_DIR_OUT,
			value,index,b,blen,
			2000) != blen) {
		warn("usb out operation failed.");
		ret = -EIO;
	} else
		ret = 0;
	mutex_unlock(&d->usb_mutex);

	return ret;
}

static int gp8psk_load_bcm4500fw(struct dvb_usb_device *d)
{
	int ret;
	const struct firmware *fw = NULL;
	u8 *ptr, *buf;
	if ((ret = request_firmware(&fw, bcm4500_firmware,
					&d->udev->dev)) != 0) {
		err("did not find the bcm4500 firmware file. (%s) "
			"Please see linux/Documentation/dvb/ for more details on firmware-problems. (%d)",
			bcm4500_firmware,ret);
		return ret;
	}

	ret = -EINVAL;

	if (gp8psk_usb_out_op(d, LOAD_BCM4500,1,0,NULL, 0))
		goto out_rel_fw;

	info("downloaidng bcm4500 firmware from file '%s'",bcm4500_firmware);

	ptr = fw->data;
	buf = kmalloc(512, GFP_KERNEL | GFP_DMA);

	while (ptr[0] != 0xff) {
		u16 buflen = ptr[0] + 4;
		if (ptr + buflen >= fw->data + fw->size) {
			err("failed to load bcm4500 firmware.");
			goto out_free;
		}
		memcpy(buf, ptr, buflen);
		if (dvb_usb_generic_write(d, buf, buflen)) {
			err("failed to load bcm4500 firmware.");
			goto out_free;
		}
		ptr += buflen;
	}

	ret = 0;

out_free:
	kfree(buf);
out_rel_fw:
	release_firmware(fw);

	return ret;
}

static int gp8psk_power_ctrl(struct dvb_usb_device *d, int onoff)
{
	u8 status, buf;
	if (onoff) {
		gp8psk_usb_in_op(d, GET_8PSK_CONFIG,0,0,&status,1);
		if (! (status & 0x01))  /* started */
			if (gp8psk_usb_in_op(d, BOOT_8PSK, 1, 0, &buf, 1))
				return -EINVAL;

		if (! (status & 0x02)) /* BCM4500 firmware loaded */
			if(gp8psk_load_bcm4500fw(d))
				return EINVAL;

		if (! (status & 0x04)) /* LNB Power */
			if (gp8psk_usb_in_op(d, START_INTERSIL, 1, 0,
					&buf, 1))
				return EINVAL;

		/* Set DVB mode */
		if(gp8psk_usb_out_op(d, SET_DVB_MODE, 1, 0, NULL, 0))
			return -EINVAL;
		gp8psk_usb_in_op(d, GET_8PSK_CONFIG,0,0,&status,1);
	} else {
		/* Turn off LNB power */
		if (gp8psk_usb_in_op(d, START_INTERSIL, 0, 0, &buf, 1))
			return EINVAL;
		/* Turn off 8psk power */
		if (gp8psk_usb_in_op(d, BOOT_8PSK, 0, 0, &buf, 1))
			return -EINVAL;

	}
	return 0;
}


static int gp8psk_streaming_ctrl(struct dvb_usb_device *d, int onoff)
{
	return gp8psk_usb_out_op(d, ARM_TRANSFER, onoff, 0 , NULL, 0);
}

static int gp8psk_frontend_attach(struct dvb_usb_device *d)
{
	d->fe = gp8psk_fe_attach(d);

	return 0;
}

static struct dvb_usb_properties gp8psk_properties;

static int gp8psk_usb_probe(struct usb_interface *intf,
		const struct usb_device_id *id)
{
	return dvb_usb_device_init(intf,&gp8psk_properties,THIS_MODULE,NULL);
}

static struct usb_device_id gp8psk_usb_table [] = {
	    { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_COLD) },
	    { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_WARM) },
	    { 0 },
};
MODULE_DEVICE_TABLE(usb, gp8psk_usb_table);

static struct dvb_usb_properties gp8psk_properties = {
	.caps = 0,

	.usb_ctrl = CYPRESS_FX2,
	.firmware = "dvb-usb-gp8psk-01.fw",

	.streaming_ctrl   = gp8psk_streaming_ctrl,
	.power_ctrl       = gp8psk_power_ctrl,
	.frontend_attach  = gp8psk_frontend_attach,

	.generic_bulk_ctrl_endpoint = 0x01,
	/* parameter for the MPEG2-data transfer */
	.urb = {
		.type = DVB_USB_BULK,
		.count = 7,
		.endpoint = 0x82,
		.u = {
			.bulk = {
				.buffersize = 8192,
			}
		}
	},

	.num_device_descs = 1,
	.devices = {
		{ .name = "Genpix 8PSK-USB DVB-S USB2.0 receiver",
		  .cold_ids = { &gp8psk_usb_table[0], NULL },
		  .warm_ids = { &gp8psk_usb_table[1], NULL },
		},
		{ 0 },
	}
};

/* usb specific object needed to register this driver with the usb subsystem */
static struct usb_driver gp8psk_usb_driver = {
	.name		= "dvb_usb_gp8psk",
	.probe		= gp8psk_usb_probe,
	.disconnect = dvb_usb_device_exit,
	.id_table	= gp8psk_usb_table,
};

/* module stuff */
static int __init gp8psk_usb_module_init(void)
{
	int result;
	if ((result = usb_register(&gp8psk_usb_driver))) {
		err("usb_register failed. (%d)",result);
		return result;
	}

	return 0;
}

static void __exit gp8psk_usb_module_exit(void)
{
	/* deregister this driver from the USB subsystem */
	usb_deregister(&gp8psk_usb_driver);
}

module_init(gp8psk_usb_module_init);
module_exit(gp8psk_usb_module_exit);

MODULE_AUTHOR("Alan Nisota <alannisota@gamil.com>");
MODULE_DESCRIPTION("Driver for Genpix 8psk-USB DVB-S USB2.0");
MODULE_VERSION("1.0");
MODULE_LICENSE("GPL");