[linux-2.6-block.git] / drivers / media / dvb / dvb-usb / cxusb.c

/* DVB USB compliant linux driver for Conexant USB reference design.
 *
 * The Conexant reference design I saw on their website was only for analogue
 * capturing (using the cx25842). The box I took to write this driver (reverse
 * engineered) is the one labeled Medion MD95700. In addition to the cx25842
 * for analogue capturing it also has a cx22702 DVB-T demodulator on the main
 * board. Besides it has a atiremote (X10) and a USB2.0 hub onboard.
 *
 * Maybe it is a little bit premature to call this driver cxusb, but I assume
 * the USB protocol is identical or at least inherited from the reference
 * design, so it can be reused for the "analogue-only" device (if it will
 * appear at all).
 *
 * TODO: check if the cx25840-driver (from ivtv) can be used for the analogue
 * part
 *
 * Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@desy.de)
 *
 *	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 "cxusb.h"

#include "cx22702.h"

/* debug */
int dvb_usb_cxusb_debug;
module_param_named(debug,dvb_usb_cxusb_debug, int, 0644);
MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);

static int cxusb_ctrl_msg(struct dvb_usb_device *d,
		u8 cmd, u8 *wbuf, int wlen, u8 *rbuf, int rlen)
{
	int wo = (rbuf == NULL || rlen == 0); /* write-only */
	u8 sndbuf[1+wlen];
	memset(sndbuf,0,1+wlen);

	sndbuf[0] = cmd;
	memcpy(&sndbuf[1],wbuf,wlen);
	if (wo)
		dvb_usb_generic_write(d,sndbuf,1+wlen);
	else
		dvb_usb_generic_rw(d,sndbuf,1+wlen,rbuf,rlen,0);

	return 0;
}

/* I2C */
static void cxusb_set_i2c_path(struct dvb_usb_device *d, enum cxusb_i2c_pathes path)
{
	struct cxusb_state *st = d->priv;
	u8 o[2],i;

	if (path == st->cur_i2c_path)
		return;

	o[0] = IOCTL_SET_I2C_PATH;
	switch (path) {
		case PATH_CX22702:
			o[1] = 0;
			break;
		case PATH_TUNER_OTHER:
			o[1] = 1;
			break;
		default:
			err("unkown i2c path");
			return;
	}
	cxusb_ctrl_msg(d,CMD_IOCTL,o,2,&i,1);

	if (i != 0x01)
		deb_info("i2c_path setting failed.\n");

	st->cur_i2c_path = path;
}

static int cxusb_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
{
	struct dvb_usb_device *d = i2c_get_adapdata(adap);
	int i;

	if (down_interruptible(&d->i2c_sem) < 0)
		return -EAGAIN;

	if (num > 2)
		warn("more than 2 i2c messages at a time is not handled yet. TODO.");

	for (i = 0; i < num; i++) {

		switch (msg[i].addr) {
			case 0x63:
				cxusb_set_i2c_path(d,PATH_CX22702);
				break;
			default:
				cxusb_set_i2c_path(d,PATH_TUNER_OTHER);
				break;
		}

		/* read request */
		if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
			u8 obuf[3+msg[i].len], ibuf[1+msg[i+1].len];
			obuf[0] = msg[i].len;
			obuf[1] = msg[i+1].len;
			obuf[2] = msg[i].addr;
			memcpy(&obuf[3],msg[i].buf,msg[i].len);

			if (cxusb_ctrl_msg(d, CMD_I2C_READ,
						obuf, 3+msg[i].len,
						ibuf, 1+msg[i+1].len) < 0)
				break;

			if (ibuf[0] != 0x08)
				deb_info("i2c read could have been failed\n");

			memcpy(msg[i+1].buf,&ibuf[1],msg[i+1].len);

			i++;
		} else { /* write */
			u8 obuf[2+msg[i].len], ibuf;
			obuf[0] = msg[i].addr;
			obuf[1] = msg[i].len;
			memcpy(&obuf[2],msg[i].buf,msg[i].len);

			if (cxusb_ctrl_msg(d,CMD_I2C_WRITE, obuf, 2+msg[i].len, &ibuf,1) < 0)
				break;
			if (ibuf != 0x08)
				deb_info("i2c write could have been failed\n");
		}
	}

	up(&d->i2c_sem);
	return i;
}

static u32 cxusb_i2c_func(struct i2c_adapter *adapter)
{
	return I2C_FUNC_I2C;
}

static struct i2c_algorithm cxusb_i2c_algo = {
	.name          = "Conexant USB I2C algorithm",
	.id            = I2C_ALGO_BIT,
	.master_xfer   = cxusb_i2c_xfer,
	.functionality = cxusb_i2c_func,
};

static int cxusb_power_ctrl(struct dvb_usb_device *d, int onoff)
{
	return 0;
}

static int cxusb_streaming_ctrl(struct dvb_usb_device *d, int onoff)
{
	u8 buf[2] = { 0x03, 0x00 };
	if (onoff)
		cxusb_ctrl_msg(d,0x36, buf, 2, NULL, 0);
	else
		cxusb_ctrl_msg(d,0x37, NULL, 0, NULL, 0);

	return 0;
}

struct cx22702_config cxusb_cx22702_config = {
	.demod_address = 0x63,

	.output_mode = CX22702_PARALLEL_OUTPUT,

	.pll_init = dvb_usb_pll_init_i2c,
	.pll_set  = dvb_usb_pll_set_i2c,
};

/* Callbacks for DVB USB */
static int cxusb_tuner_attach(struct dvb_usb_device *d)
{
	u8 bpll[4] = { 0x0b, 0xdc, 0x9c, 0xa0 };
	d->pll_addr = 0x61;
	memcpy(d->pll_init,bpll,4);
	d->pll_desc = &dvb_pll_fmd1216me;
	return 0;
}

static int cxusb_frontend_attach(struct dvb_usb_device *d)
{
	u8 buf[2] = { 0x03, 0x00 };
	u8 b = 0;

	if (usb_set_interface(d->udev,0,0) < 0)
		err("set interface to alts=0 failed");

	cxusb_ctrl_msg(d,0xde,&b,0,NULL,0);
	cxusb_set_i2c_path(d,PATH_TUNER_OTHER);
	cxusb_ctrl_msg(d,CMD_POWER_OFF, NULL, 0, &b, 1);

	if (usb_set_interface(d->udev,0,6) < 0)
		err("set interface failed");

	cxusb_ctrl_msg(d,0x36, buf, 2, NULL, 0);
	cxusb_set_i2c_path(d,PATH_CX22702);
	cxusb_ctrl_msg(d,CMD_POWER_ON, NULL, 0, &b, 1);

	if ((d->fe = cx22702_attach(&cxusb_cx22702_config, &d->i2c_adap)) != NULL)
		return 0;

	return -EIO;
}

/* DVB USB Driver stuff */
static struct dvb_usb_properties cxusb_properties;

static int cxusb_probe(struct usb_interface *intf,
		const struct usb_device_id *id)
{
	return dvb_usb_device_init(intf,&cxusb_properties,THIS_MODULE);
}

static struct usb_device_id cxusb_table [] = {
		{ USB_DEVICE(USB_VID_MEDION, USB_PID_MEDION_MD95700) },
		{}		/* Terminating entry */
};
MODULE_DEVICE_TABLE (usb, cxusb_table);

static struct dvb_usb_properties cxusb_properties = {
	.caps = DVB_USB_IS_AN_I2C_ADAPTER,

	.usb_ctrl = CYPRESS_FX2,

	.size_of_priv     = sizeof(struct cxusb_state),

	.streaming_ctrl   = cxusb_streaming_ctrl,
	.power_ctrl       = cxusb_power_ctrl,
	.frontend_attach  = cxusb_frontend_attach,
	.tuner_attach     = cxusb_tuner_attach,

	.i2c_algo         = &cxusb_i2c_algo,

	.generic_bulk_ctrl_endpoint = 0x01,
	/* parameter for the MPEG2-data transfer */
	.urb = {
		.type = DVB_USB_ISOC,
		.count = 5,
		.endpoint = 0x02,
		.u = {
			.isoc = {
				.framesperurb = 32,
				.framesize = 940,
				.interval = 5,
			}
		}
	},

	.num_device_descs = 1,
	.devices = {
		{   "Medion MD95700 (MDUSBTV-HYBRID)",
			{ NULL },
			{ &cxusb_table[0], NULL },
		},
	}
};

static struct usb_driver cxusb_driver = {
	.owner		= THIS_MODULE,
	.name		= "cxusb",
	.probe		= cxusb_probe,
	.disconnect = dvb_usb_device_exit,
	.id_table	= cxusb_table,
};

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

	return 0;
}

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

module_init (cxusb_module_init);
module_exit (cxusb_module_exit);

MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
MODULE_DESCRIPTION("Driver for Conexant USB2.0 hybrid reference design");
MODULE_VERSION("1.0-alpha");
MODULE_LICENSE("GPL");
Commit	Line	Data
22c6d93a PB	1	/* DVB USB compliant linux driver for Conexant USB reference design.
	2	*
	3	* The Conexant reference design I saw on their website was only for analogue
	4	* capturing (using the cx25842). The box I took to write this driver (reverse
	5	* engineered) is the one labeled Medion MD95700. In addition to the cx25842
	6	* for analogue capturing it also has a cx22702 DVB-T demodulator on the main
	7	* board. Besides it has a atiremote (X10) and a USB2.0 hub onboard.
	8	*
	9	* Maybe it is a little bit premature to call this driver cxusb, but I assume
	10	* the USB protocol is identical or at least inherited from the reference
	11	* design, so it can be reused for the "analogue-only" device (if it will
	12	* appear at all).
	13	*
	14	* TODO: check if the cx25840-driver (from ivtv) can be used for the analogue
	15	* part
	16	*
22c6d93a PB	17	* Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@desy.de)
	18	*
	19	* This program is free software; you can redistribute it and/or modify it
	20	* under the terms of the GNU General Public License as published by the Free
	21	* Software Foundation, version 2.
	22	*
	23	* see Documentation/dvb/README.dvb-usb for more information
	24	*/
	25	#include "cxusb.h"
	26
	27	#include "cx22702.h"
	28
	29	/* debug */
	30	int dvb_usb_cxusb_debug;
	31	module_param_named(debug,dvb_usb_cxusb_debug, int, 0644);
	32	MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
	33
	34	static int cxusb_ctrl_msg(struct dvb_usb_device *d,
	35	u8 cmd, u8 wbuf, int wlen, u8 rbuf, int rlen)
	36	{
	37	int wo = (rbuf == NULL \|\| rlen == 0); /* write-only */
	38	u8 sndbuf[1+wlen];
	39	memset(sndbuf,0,1+wlen);
	40
	41	sndbuf[0] = cmd;
	42	memcpy(&sndbuf[1],wbuf,wlen);
	43	if (wo)
	44	dvb_usb_generic_write(d,sndbuf,1+wlen);
	45	else
	46	dvb_usb_generic_rw(d,sndbuf,1+wlen,rbuf,rlen,0);
	47
	48	return 0;
	49	}
	50
	51	/* I2C */
	52	static void cxusb_set_i2c_path(struct dvb_usb_device *d, enum cxusb_i2c_pathes path)
	53	{
	54	struct cxusb_state *st = d->priv;
	55	u8 o[2],i;
	56
	57	if (path == st->cur_i2c_path)
	58	return;
	59
	60	o[0] = IOCTL_SET_I2C_PATH;
	61	switch (path) {
	62	case PATH_CX22702:
	63	o[1] = 0;
	64	break;
	65	case PATH_TUNER_OTHER:
	66	o[1] = 1;
	67	break;
	68	default:
	69	err("unkown i2c path");
	70	return;
	71	}
	72	cxusb_ctrl_msg(d,CMD_IOCTL,o,2,&i,1);
	73
	74	if (i != 0x01)
	75	deb_info("i2c_path setting failed.\n");
	76
	77	st->cur_i2c_path = path;
	78	}
	79
	80	static int cxusb_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
81	{
82	struct dvb_usb_device *d = i2c_get_adapdata(adap);
83	int i;
84
85	if (down_interruptible(&d->i2c_sem) < 0)
86	return -EAGAIN;
87
88	if (num > 2)
89	warn("more than 2 i2c messages at a time is not handled yet. TODO.");
90
91	for (i = 0; i < num; i++) {
92
93	switch (msg[i].addr) {
94	case 0x63:
95	cxusb_set_i2c_path(d,PATH_CX22702);
96	break;
97	default:
98	cxusb_set_i2c_path(d,PATH_TUNER_OTHER);
99	break;
100	}
101
102	/* read request */
103	if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
104	u8 obuf[3+msg[i].len], ibuf[1+msg[i+1].len];
105	obuf[0] = msg[i].len;
106	obuf[1] = msg[i+1].len;
107	obuf[2] = msg[i].addr;
108	memcpy(&obuf[3],msg[i].buf,msg[i].len);
109
110	if (cxusb_ctrl_msg(d, CMD_I2C_READ,
111	obuf, 3+msg[i].len,
112	ibuf, 1+msg[i+1].len) < 0)
113	break;
114
115	if (ibuf[0] != 0x08)
116	deb_info("i2c read could have been failed\n");
117
118	memcpy(msg[i+1].buf,&ibuf[1],msg[i+1].len);
119
120	i++;
121	} else { /* write */
122	u8 obuf[2+msg[i].len], ibuf;
123	obuf[0] = msg[i].addr;
124	obuf[1] = msg[i].len;
125	memcpy(&obuf[2],msg[i].buf,msg[i].len);
126
127	if (cxusb_ctrl_msg(d,CMD_I2C_WRITE, obuf, 2+msg[i].len, &ibuf,1) < 0)
128	break;
129	if (ibuf != 0x08)
130	deb_info("i2c write could have been failed\n");
131	}
132	}
133
134	up(&d->i2c_sem);
135	return i;
136	}
137
138	static u32 cxusb_i2c_func(struct i2c_adapter *adapter)
139	{
140	return I2C_FUNC_I2C;
141	}
142
143	static struct i2c_algorithm cxusb_i2c_algo = {
144	.name = "Conexant USB I2C algorithm",
145	.id = I2C_ALGO_BIT,
146	.master_xfer = cxusb_i2c_xfer,
147	.functionality = cxusb_i2c_func,
148	};
149
150	static int cxusb_power_ctrl(struct dvb_usb_device *d, int onoff)
151	{
152	return 0;
153	}
154
155	static int cxusb_streaming_ctrl(struct dvb_usb_device *d, int onoff)
156	{
8257e8a4 PB	157	u8 buf[2] = { 0x03, 0x00 };
	158	if (onoff)
	159	cxusb_ctrl_msg(d,0x36, buf, 2, NULL, 0);
	160	else
	161	cxusb_ctrl_msg(d,0x37, NULL, 0, NULL, 0);
	162
22c6d93a PB	163	return 0;
	164	}
	165
	166	struct cx22702_config cxusb_cx22702_config = {
	167	.demod_address = 0x63,
	168
8257e8a4 PB	169	.output_mode = CX22702_PARALLEL_OUTPUT,
8257e8a4 PB	170
22c6d93a PB	171	.pll_init = dvb_usb_pll_init_i2c,
	172	.pll_set = dvb_usb_pll_set_i2c,
	173	};
	174
	175	/* Callbacks for DVB USB */
	176	static int cxusb_tuner_attach(struct dvb_usb_device *d)
	177	{
	178	u8 bpll[4] = { 0x0b, 0xdc, 0x9c, 0xa0 };
	179	d->pll_addr = 0x61;
	180	memcpy(d->pll_init,bpll,4);
	181	d->pll_desc = &dvb_pll_fmd1216me;
	182	return 0;
	183	}
	184
	185	static int cxusb_frontend_attach(struct dvb_usb_device *d)
	186	{
	187	u8 buf[2] = { 0x03, 0x00 };
	188	u8 b = 0;
	189
8257e8a4 PB	190	if (usb_set_interface(d->udev,0,0) < 0)
	191	err("set interface to alts=0 failed");
	192
22c6d93a PB	193	cxusb_ctrl_msg(d,0xde,&b,0,NULL,0);
	194	cxusb_set_i2c_path(d,PATH_TUNER_OTHER);
	195	cxusb_ctrl_msg(d,CMD_POWER_OFF, NULL, 0, &b, 1);
	196
	197	if (usb_set_interface(d->udev,0,6) < 0)
8257e8a4	198	err("set interface failed");
22c6d93a PB	199
	200	cxusb_ctrl_msg(d,0x36, buf, 2, NULL, 0);
	201	cxusb_set_i2c_path(d,PATH_CX22702);
	202	cxusb_ctrl_msg(d,CMD_POWER_ON, NULL, 0, &b, 1);
	203
	204	if ((d->fe = cx22702_attach(&cxusb_cx22702_config, &d->i2c_adap)) != NULL)
	205	return 0;
	206
	207	return -EIO;
	208	}
	209
	210	/* DVB USB Driver stuff */
	211	static struct dvb_usb_properties cxusb_properties;
	212
	213	static int cxusb_probe(struct usb_interface *intf,
	214	const struct usb_device_id *id)
	215	{
	216	return dvb_usb_device_init(intf,&cxusb_properties,THIS_MODULE);
	217	}
	218
	219	static struct usb_device_id cxusb_table [] = {
	220	{ USB_DEVICE(USB_VID_MEDION, USB_PID_MEDION_MD95700) },
	221	{} /* Terminating entry */
	222	};
	223	MODULE_DEVICE_TABLE (usb, cxusb_table);
	224
	225	static struct dvb_usb_properties cxusb_properties = {
	226	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
	227
	228	.usb_ctrl = CYPRESS_FX2,
	229
	230	.size_of_priv = sizeof(struct cxusb_state),
	231
	232	.streaming_ctrl = cxusb_streaming_ctrl,
	233	.power_ctrl = cxusb_power_ctrl,
	234	.frontend_attach = cxusb_frontend_attach,
	235	.tuner_attach = cxusb_tuner_attach,
	236
	237	.i2c_algo = &cxusb_i2c_algo,
	238
	239	.generic_bulk_ctrl_endpoint = 0x01,
	240	/* parameter for the MPEG2-data transfer */
	241	.urb = {
	242	.type = DVB_USB_ISOC,
	243	.count = 5,
	244	.endpoint = 0x02,
	245	.u = {
	246	.isoc = {
8257e8a4 PB	247	.framesperurb = 32,
	248	.framesize = 940,
	249	.interval = 5,
22c6d93a PB	250	}
	251	}
	252	},
	253
	254	.num_device_descs = 1,
	255	.devices = {
	256	{ "Medion MD95700 (MDUSBTV-HYBRID)",
	257	{ NULL },
	258	{ &cxusb_table[0], NULL },
	259	},
	260	}
	261	};
	262
	263	static struct usb_driver cxusb_driver = {
	264	.owner = THIS_MODULE,
	265	.name = "cxusb",
	266	.probe = cxusb_probe,
	267	.disconnect = dvb_usb_device_exit,
	268	.id_table = cxusb_table,
	269	};
	270
	271	/* module stuff */
	272	static int __init cxusb_module_init(void)
	273	{
	274	int result;
	275	if ((result = usb_register(&cxusb_driver))) {
	276	err("usb_register failed. Error number %d",result);
	277	return result;
	278	}
	279
	280	return 0;
	281	}
	282
	283	static void __exit cxusb_module_exit(void)
	284	{
	285	/* deregister this driver from the USB subsystem */
	286	usb_deregister(&cxusb_driver);
	287	}
	288
	289	module_init (cxusb_module_init);
	290	module_exit (cxusb_module_exit);
	291
	292	MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
	293	MODULE_DESCRIPTION("Driver for Conexant USB2.0 hybrid reference design");
	294	MODULE_VERSION("1.0-alpha");
	295	MODULE_LICENSE("GPL");