[net-next-2.6.git] / drivers / media / video / em28xx / em28xx-dvb.c

/*
 DVB device driver for em28xx

 (c) 2008 Mauro Carvalho Chehab <mchehab@infradead.org>

 (c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com>
	- Fixes for the driver to properly work with HVR-950
	- Fixes for the driver to properly work with Pinnacle PCTV HD Pro Stick
	- Fixes for the driver to properly work with AMD ATI TV Wonder HD 600

 (c) 2008 Aidan Thornton <makosoft@googlemail.com>

 Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by:
	(c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au>
	(c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]

 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; either version 2 of the License.
 */

#include <linux/kernel.h>
#include <linux/usb.h>

#include "em28xx.h"
#include <media/v4l2-common.h>
#include <media/videobuf-vmalloc.h>

#include "lgdt330x.h"
#include "zl10353.h"
#ifdef EM28XX_DRX397XD_SUPPORT
#include "drx397xD.h"
#endif

MODULE_DESCRIPTION("driver for em28xx based DVB cards");
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
MODULE_LICENSE("GPL");

static unsigned int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "enable debug messages [dvb]");

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

#define dprintk(level, fmt, arg...) do {			\
if (debug >= level) 						\
	printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg);	\
} while (0)

#define EM28XX_DVB_NUM_BUFS 5
#define EM28XX_DVB_MAX_PACKETSIZE 564
#define EM28XX_DVB_MAX_PACKETS 64

struct em28xx_dvb {
	struct dvb_frontend        *frontend;

	/* feed count management */
	struct mutex               lock;
	int                        nfeeds;

	/* general boilerplate stuff */
	struct dvb_adapter         adapter;
	struct dvb_demux           demux;
	struct dmxdev              dmxdev;
	struct dmx_frontend        fe_hw;
	struct dmx_frontend        fe_mem;
	struct dvb_net             net;
};


static inline void print_err_status(struct em28xx *dev,
				     int packet, int status)
{
	char *errmsg = "Unknown";

	switch (status) {
	case -ENOENT:
		errmsg = "unlinked synchronuously";
		break;
	case -ECONNRESET:
		errmsg = "unlinked asynchronuously";
		break;
	case -ENOSR:
		errmsg = "Buffer error (overrun)";
		break;
	case -EPIPE:
		errmsg = "Stalled (device not responding)";
		break;
	case -EOVERFLOW:
		errmsg = "Babble (bad cable?)";
		break;
	case -EPROTO:
		errmsg = "Bit-stuff error (bad cable?)";
		break;
	case -EILSEQ:
		errmsg = "CRC/Timeout (could be anything)";
		break;
	case -ETIME:
		errmsg = "Device does not respond";
		break;
	}
	if (packet < 0) {
		dprintk(1, "URB status %d [%s].\n", status, errmsg);
	} else {
		dprintk(1, "URB packet %d, status %d [%s].\n",
			packet, status, errmsg);
	}
}

static inline int dvb_isoc_copy(struct em28xx *dev, struct urb *urb)
{
	int i;

	if (!dev)
		return 0;

	if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
		return 0;

	if (urb->status < 0) {
		print_err_status(dev, -1, urb->status);
		if (urb->status == -ENOENT)
			return 0;
	}

	for (i = 0; i < urb->number_of_packets; i++) {
		int status = urb->iso_frame_desc[i].status;

		if (status < 0) {
			print_err_status(dev, i, status);
			if (urb->iso_frame_desc[i].status != -EPROTO)
				continue;
		}

		dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer +
				 urb->iso_frame_desc[i].offset,
				 urb->iso_frame_desc[i].actual_length);
	}

	return 0;
}

static int start_streaming(struct em28xx_dvb *dvb)
{
	int rc;
	struct em28xx *dev = dvb->adapter.priv;

	usb_set_interface(dev->udev, 0, 1);
	rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
	if (rc < 0)
		return rc;

	return em28xx_init_isoc(dev, EM28XX_DVB_MAX_PACKETS,
				EM28XX_DVB_NUM_BUFS, EM28XX_DVB_MAX_PACKETSIZE,
				dvb_isoc_copy);
}

static int stop_streaming(struct em28xx_dvb *dvb)
{
	struct em28xx *dev = dvb->adapter.priv;

	em28xx_uninit_isoc(dev);

	em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);

	return 0;
}

static int start_feed(struct dvb_demux_feed *feed)
{
	struct dvb_demux *demux  = feed->demux;
	struct em28xx_dvb *dvb = demux->priv;
	int rc, ret;

	if (!demux->dmx.frontend)
		return -EINVAL;

	mutex_lock(&dvb->lock);
	dvb->nfeeds++;
	rc = dvb->nfeeds;

	if (dvb->nfeeds == 1) {
		ret = start_streaming(dvb);
		if (ret < 0)
			rc = ret;
	}

	mutex_unlock(&dvb->lock);
	return rc;
}

static int stop_feed(struct dvb_demux_feed *feed)
{
	struct dvb_demux *demux  = feed->demux;
	struct em28xx_dvb *dvb = demux->priv;
	int err = 0;

	mutex_lock(&dvb->lock);
	dvb->nfeeds--;

	if (0 == dvb->nfeeds)
		err = stop_streaming(dvb);

	mutex_unlock(&dvb->lock);
	return err;
}


/* ------------------------------------------------------------------ */
static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
{
	struct em28xx *dev = fe->dvb->priv;

	if (acquire)
		return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
	else
		return em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
}

/* ------------------------------------------------------------------ */

static struct lgdt330x_config em2880_lgdt3303_dev = {
	.demod_address = 0x0e,
	.demod_chip = LGDT3303,
};

static struct zl10353_config em28xx_zl10353_with_xc3028 = {
	.demod_address = (0x1e >> 1),
	.no_tuner = 1,
	.parallel_ts = 1,
	.if2 = 45600,
};

#ifdef EM28XX_DRX397XD_SUPPORT
/* [TODO] djh - not sure yet what the device config needs to contain */
static struct drx397xD_config em28xx_drx397xD_with_xc3028 = {
	.demod_address = (0xe0 >> 1),
};
#endif

/* ------------------------------------------------------------------ */

static int attach_xc3028(u8 addr, struct em28xx *dev)
{
	struct dvb_frontend *fe;
	struct xc2028_config cfg;

	memset(&cfg, 0, sizeof(cfg));
	cfg.i2c_adap  = &dev->i2c_adap;
	cfg.i2c_addr  = addr;
	cfg.callback  = em28xx_tuner_callback;

	if (!dev->dvb->frontend) {
		printk(KERN_ERR "%s/2: dvb frontend not attached. "
				"Can't attach xc3028\n",
		       dev->name);
		return -EINVAL;
	}

	fe = dvb_attach(xc2028_attach, dev->dvb->frontend, &cfg);
	if (!fe) {
		printk(KERN_ERR "%s/2: xc3028 attach failed\n",
		       dev->name);
		dvb_frontend_detach(dev->dvb->frontend);
		dev->dvb->frontend = NULL;
		return -EINVAL;
	}

	printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name);

	return 0;
}

/* ------------------------------------------------------------------ */

int register_dvb(struct em28xx_dvb *dvb,
		 struct module *module,
		 struct em28xx *dev,
		 struct device *device)
{
	int result;

	mutex_init(&dvb->lock);

	/* register adapter */
	result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
				      adapter_nr);
	if (result < 0) {
		printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
		       dev->name, result);
		goto fail_adapter;
	}

	/* Ensure all frontends negotiate bus access */
	dvb->frontend->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;

	dvb->adapter.priv = dev;

	/* register frontend */
	result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
	if (result < 0) {
		printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
		       dev->name, result);
		goto fail_frontend;
	}

	/* register demux stuff */
	dvb->demux.dmx.capabilities =
		DMX_TS_FILTERING | DMX_SECTION_FILTERING |
		DMX_MEMORY_BASED_FILTERING;
	dvb->demux.priv       = dvb;
	dvb->demux.filternum  = 256;
	dvb->demux.feednum    = 256;
	dvb->demux.start_feed = start_feed;
	dvb->demux.stop_feed  = stop_feed;

	result = dvb_dmx_init(&dvb->demux);
	if (result < 0) {
		printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
		       dev->name, result);
		goto fail_dmx;
	}

	dvb->dmxdev.filternum    = 256;
	dvb->dmxdev.demux        = &dvb->demux.dmx;
	dvb->dmxdev.capabilities = 0;
	result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
	if (result < 0) {
		printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
		       dev->name, result);
		goto fail_dmxdev;
	}

	dvb->fe_hw.source = DMX_FRONTEND_0;
	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	if (result < 0) {
		printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
		       dev->name, result);
		goto fail_fe_hw;
	}

	dvb->fe_mem.source = DMX_MEMORY_FE;
	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
	if (result < 0) {
		printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
		       dev->name, result);
		goto fail_fe_mem;
	}

	result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	if (result < 0) {
		printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
		       dev->name, result);
		goto fail_fe_conn;
	}

	/* register network adapter */
	dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
	return 0;

fail_fe_conn:
	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
fail_fe_mem:
	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
fail_fe_hw:
	dvb_dmxdev_release(&dvb->dmxdev);
fail_dmxdev:
	dvb_dmx_release(&dvb->demux);
fail_dmx:
	dvb_unregister_frontend(dvb->frontend);
fail_frontend:
	dvb_frontend_detach(dvb->frontend);
	dvb_unregister_adapter(&dvb->adapter);
fail_adapter:
	return result;
}

static void unregister_dvb(struct em28xx_dvb *dvb)
{
	dvb_net_release(&dvb->net);
	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	dvb_dmxdev_release(&dvb->dmxdev);
	dvb_dmx_release(&dvb->demux);
	dvb_unregister_frontend(dvb->frontend);
	dvb_frontend_detach(dvb->frontend);
	dvb_unregister_adapter(&dvb->adapter);
}


static int dvb_init(struct em28xx *dev)
{
	int result = 0;
	struct em28xx_dvb *dvb;

	if (!dev->has_dvb) {
		/* This device does not support the extension */
		return 0;
	}

	dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);

	if (dvb == NULL) {
		printk(KERN_INFO "em28xx_dvb: memory allocation failed\n");
		return -ENOMEM;
	}
	dev->dvb = dvb;

	em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
	/* init frontend */
	switch (dev->model) {
	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_950:
	case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
	case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
		dvb->frontend = dvb_attach(lgdt330x_attach,
					   &em2880_lgdt3303_dev,
					   &dev->i2c_adap);
		if (attach_xc3028(0x61, dev) < 0) {
			result = -EINVAL;
			goto out_free;
		}
		break;
	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
		dvb->frontend = dvb_attach(zl10353_attach,
					   &em28xx_zl10353_with_xc3028,
					   &dev->i2c_adap);
		if (attach_xc3028(0x61, dev) < 0) {
			result = -EINVAL;
			goto out_free;
		}
		break;
	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
#ifdef EM28XX_DRX397XD_SUPPORT
		/* We don't have the config structure properly populated, so
		   this is commented out for now */
		dvb->frontend = dvb_attach(drx397xD_attach,
					   &em28xx_drx397xD_with_xc3028,
					   &dev->i2c_adap);
		if (attach_xc3028(0x61, dev) < 0) {
			result = -EINVAL;
			goto out_free;
		}
		break;
#endif
	case EM2880_BOARD_TERRATEC_HYBRID_XS:
		dvb->frontend = dvb_attach(zl10353_attach,
						&em28xx_zl10353_with_xc3028,
						&dev->i2c_adap);
		if (attach_xc3028(0x61, dev) < 0) {
			 result = -EINVAL;
			goto out_free;
		}
		break;
	default:
		printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card"
				" isn't supported yet\n",
		       dev->name);
		break;
	}
	if (NULL == dvb->frontend) {
		printk(KERN_ERR
		       "%s/2: frontend initialization failed\n",
		       dev->name);
		result = -EINVAL;
		goto out_free;
	}

	/* register everything */
	result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);

	if (result < 0)
		goto out_free;

	em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
	printk(KERN_INFO "Successfully loaded em28xx-dvb\n");
	return 0;

out_free:
	em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
	kfree(dvb);
	dev->dvb = NULL;
	return result;
}

static int dvb_fini(struct em28xx *dev)
{
	if (!dev->has_dvb) {
		/* This device does not support the extension */
		return 0;
	}

	if (dev->dvb) {
		unregister_dvb(dev->dvb);
		dev->dvb = NULL;
	}

	return 0;
}

static struct em28xx_ops dvb_ops = {
	.id   = EM28XX_DVB,
	.name = "Em28xx dvb Extension",
	.init = dvb_init,
	.fini = dvb_fini,
};

static int __init em28xx_dvb_register(void)
{
	return em28xx_register_extension(&dvb_ops);
}

static void __exit em28xx_dvb_unregister(void)
{
	em28xx_unregister_extension(&dvb_ops);
}

module_init(em28xx_dvb_register);
module_exit(em28xx_dvb_unregister);
Commit	Line	Data
3aefb79a MCC	1	/*
	2	DVB device driver for em28xx
	3
	4	(c) 2008 Mauro Carvalho Chehab <mchehab@infradead.org>
	5
bdfbf952 DH	6	(c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com>
bdfbf952 DH	7	- Fixes for the driver to properly work with HVR-950
4fd305b2	8	- Fixes for the driver to properly work with Pinnacle PCTV HD Pro Stick
e14b3658	9	- Fixes for the driver to properly work with AMD ATI TV Wonder HD 600
bdfbf952	10
3421b778 AT	11	(c) 2008 Aidan Thornton <makosoft@googlemail.com>
	12
	13	Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by:
3aefb79a MCC	14	(c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au>
	15	(c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
	16
	17	This program is free software; you can redistribute it and/or modify
	18	it under the terms of the GNU General Public License as published by
	19	the Free Software Foundation; either version 2 of the License.
	20	*/
	21
	22	#include <linux/kernel.h>
	23	#include <linux/usb.h>
	24
	25	#include "em28xx.h"
	26	#include <media/v4l2-common.h>
	27	#include <media/videobuf-vmalloc.h>
	28
	29	#include "lgdt330x.h"
7e6388a1	30	#include "zl10353.h"
17d9d558 DH	31	#ifdef EM28XX_DRX397XD_SUPPORT
	32	#include "drx397xD.h"
	33	#endif
3aefb79a MCC	34
	35	MODULE_DESCRIPTION("driver for em28xx based DVB cards");
	36	MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
	37	MODULE_LICENSE("GPL");
	38
	39	static unsigned int debug;
	40	module_param(debug, int, 0644);
	41	MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
	42
	43	DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
	44
	45	#define dprintk(level, fmt, arg...) do { \
	46	if (debug >= level) \
3421b778	47	printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \
3aefb79a MCC	48	} while (0)
3aefb79a MCC	49
3421b778 AT	50	#define EM28XX_DVB_NUM_BUFS 5
	51	#define EM28XX_DVB_MAX_PACKETSIZE 564
	52	#define EM28XX_DVB_MAX_PACKETS 64
	53
	54	struct em28xx_dvb {
	55	struct dvb_frontend *frontend;
	56
	57	/* feed count management */
	58	struct mutex lock;
	59	int nfeeds;
	60
	61	/* general boilerplate stuff */
	62	struct dvb_adapter adapter;
	63	struct dvb_demux demux;
	64	struct dmxdev dmxdev;
	65	struct dmx_frontend fe_hw;
	66	struct dmx_frontend fe_mem;
	67	struct dvb_net net;
	68	};
	69
	70
	71	static inline void print_err_status(struct em28xx *dev,
	72	int packet, int status)
3aefb79a	73	{
3421b778	74	char *errmsg = "Unknown";
3aefb79a	75
3421b778 AT	76	switch (status) {
	77	case -ENOENT:
	78	errmsg = "unlinked synchronuously";
	79	break;
	80	case -ECONNRESET:
	81	errmsg = "unlinked asynchronuously";
	82	break;
	83	case -ENOSR:
	84	errmsg = "Buffer error (overrun)";
	85	break;
	86	case -EPIPE:
	87	errmsg = "Stalled (device not responding)";
	88	break;
	89	case -EOVERFLOW:
	90	errmsg = "Babble (bad cable?)";
	91	break;
	92	case -EPROTO:
	93	errmsg = "Bit-stuff error (bad cable?)";
	94	break;
	95	case -EILSEQ:
	96	errmsg = "CRC/Timeout (could be anything)";
	97	break;
	98	case -ETIME:
	99	errmsg = "Device does not respond";
	100	break;
	101	}
	102	if (packet < 0) {
	103	dprintk(1, "URB status %d [%s].\n", status, errmsg);
	104	} else {
6ea54d93 DSL	105	dprintk(1, "URB packet %d, status %d [%s].\n",
6ea54d93 DSL	106	packet, status, errmsg);
3421b778 AT	107	}
3421b778 AT	108	}
3aefb79a	109
3421b778 AT	110	static inline int dvb_isoc_copy(struct em28xx dev, struct urb urb)
	111	{
	112	int i;
3aefb79a	113
3421b778 AT	114	if (!dev)
3421b778 AT	115	return 0;
3aefb79a	116
3421b778 AT	117	if ((dev->state & DEV_DISCONNECTED) \|\| (dev->state & DEV_MISCONFIGURED))
	118	return 0;
	119
	120	if (urb->status < 0) {
	121	print_err_status(dev, -1, urb->status);
	122	if (urb->status == -ENOENT)
	123	return 0;
	124	}
	125
	126	for (i = 0; i < urb->number_of_packets; i++) {
	127	int status = urb->iso_frame_desc[i].status;
	128
	129	if (status < 0) {
	130	print_err_status(dev, i, status);
	131	if (urb->iso_frame_desc[i].status != -EPROTO)
	132	continue;
	133	}
	134
	135	dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer +
	136	urb->iso_frame_desc[i].offset,
	137	urb->iso_frame_desc[i].actual_length);
	138	}
	139
	140	return 0;
	141	}
	142
6ea54d93 DSL	143	static int start_streaming(struct em28xx_dvb *dvb)
6ea54d93 DSL	144	{
c67ec53f	145	int rc;
3421b778 AT	146	struct em28xx *dev = dvb->adapter.priv;
	147
	148	usb_set_interface(dev->udev, 0, 1);
c67ec53f MCC	149	rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
	150	if (rc < 0)
	151	return rc;
3421b778 AT	152
	153	return em28xx_init_isoc(dev, EM28XX_DVB_MAX_PACKETS,
	154	EM28XX_DVB_NUM_BUFS, EM28XX_DVB_MAX_PACKETSIZE,
c67ec53f	155	dvb_isoc_copy);
3421b778 AT	156	}
3421b778 AT	157
6ea54d93 DSL	158	static int stop_streaming(struct em28xx_dvb *dvb)
6ea54d93 DSL	159	{
3421b778 AT	160	struct em28xx *dev = dvb->adapter.priv;
	161
	162	em28xx_uninit_isoc(dev);
c67ec53f MCC	163
	164	em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
	165
3aefb79a MCC	166	return 0;
	167	}
	168
3421b778 AT	169	static int start_feed(struct dvb_demux_feed *feed)
	170	{
	171	struct dvb_demux *demux = feed->demux;
	172	struct em28xx_dvb *dvb = demux->priv;
	173	int rc, ret;
	174
	175	if (!demux->dmx.frontend)
	176	return -EINVAL;
	177
	178	mutex_lock(&dvb->lock);
	179	dvb->nfeeds++;
	180	rc = dvb->nfeeds;
	181
	182	if (dvb->nfeeds == 1) {
	183	ret = start_streaming(dvb);
6ea54d93 DSL	184	if (ret < 0)
6ea54d93 DSL	185	rc = ret;
3421b778 AT	186	}
	187
	188	mutex_unlock(&dvb->lock);
	189	return rc;
	190	}
	191
	192	static int stop_feed(struct dvb_demux_feed *feed)
	193	{
	194	struct dvb_demux *demux = feed->demux;
	195	struct em28xx_dvb *dvb = demux->priv;
	196	int err = 0;
	197
	198	mutex_lock(&dvb->lock);
	199	dvb->nfeeds--;
6ea54d93 DSL	200
6ea54d93 DSL	201	if (0 == dvb->nfeeds)
3421b778	202	err = stop_streaming(dvb);
6ea54d93	203
3421b778 AT	204	mutex_unlock(&dvb->lock);
	205	return err;
	206	}
	207
	208
e3569abc MCC	209
	210	/* ------------------------------------------------------------------ */
	211	static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
	212	{
	213	struct em28xx *dev = fe->dvb->priv;
	214
	215	if (acquire)
	216	return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
	217	else
	218	return em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
	219	}
	220
3aefb79a MCC	221	/* ------------------------------------------------------------------ */
3aefb79a MCC	222
227ad4ab MCC	223	static struct lgdt330x_config em2880_lgdt3303_dev = {
	224	.demod_address = 0x0e,
	225	.demod_chip = LGDT3303,
	226	};
3aefb79a	227
7e6388a1 AT	228	static struct zl10353_config em28xx_zl10353_with_xc3028 = {
	229	.demod_address = (0x1e >> 1),
	230	.no_tuner = 1,
	231	.parallel_ts = 1,
	232	.if2 = 45600,
	233	};
	234
17d9d558 DH	235	#ifdef EM28XX_DRX397XD_SUPPORT
	236	/* [TODO] djh - not sure yet what the device config needs to contain */
	237	static struct drx397xD_config em28xx_drx397xD_with_xc3028 = {
	238	.demod_address = (0xe0 >> 1),
	239	};
	240	#endif
	241
3aefb79a MCC	242	/* ------------------------------------------------------------------ */
	243
	244	static int attach_xc3028(u8 addr, struct em28xx *dev)
	245	{
	246	struct dvb_frontend *fe;
3ca9c093 MCC	247	struct xc2028_config cfg;
3ca9c093 MCC	248
6ea54d93	249	memset(&cfg, 0, sizeof(cfg));
3ca9c093 MCC	250	cfg.i2c_adap = &dev->i2c_adap;
3ca9c093 MCC	251	cfg.i2c_addr = addr;
3ca9c093 MCC	252	cfg.callback = em28xx_tuner_callback;
3ca9c093 MCC	253
3421b778	254	if (!dev->dvb->frontend) {
3aefb79a MCC	255	printk(KERN_ERR "%s/2: dvb frontend not attached. "
	256	"Can't attach xc3028\n",
	257	dev->name);
	258	return -EINVAL;
	259	}
	260
3421b778	261	fe = dvb_attach(xc2028_attach, dev->dvb->frontend, &cfg);
3aefb79a MCC	262	if (!fe) {
	263	printk(KERN_ERR "%s/2: xc3028 attach failed\n",
	264	dev->name);
3421b778	265	dvb_frontend_detach(dev->dvb->frontend);
3421b778	266	dev->dvb->frontend = NULL;
3aefb79a MCC	267	return -EINVAL;
	268	}
	269
	270	printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name);
	271
	272	return 0;
	273	}
	274
3421b778 AT	275	/* ------------------------------------------------------------------ */
	276
	277	int register_dvb(struct em28xx_dvb *dvb,
	278	struct module *module,
	279	struct em28xx *dev,
	280	struct device *device)
3aefb79a	281	{
3421b778	282	int result;
3aefb79a	283
3421b778	284	mutex_init(&dvb->lock);
3aefb79a	285
3421b778 AT	286	/* register adapter */
	287	result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
	288	adapter_nr);
	289	if (result < 0) {
	290	printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
	291	dev->name, result);
	292	goto fail_adapter;
	293	}
e3569abc MCC	294
	295	/* Ensure all frontends negotiate bus access */
	296	dvb->frontend->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
	297
3421b778 AT	298	dvb->adapter.priv = dev;
	299
	300	/* register frontend */
	301	result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
	302	if (result < 0) {
	303	printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
	304	dev->name, result);
	305	goto fail_frontend;
	306	}
	307
	308	/* register demux stuff */
	309	dvb->demux.dmx.capabilities =
	310	DMX_TS_FILTERING \| DMX_SECTION_FILTERING \|
	311	DMX_MEMORY_BASED_FILTERING;
	312	dvb->demux.priv = dvb;
	313	dvb->demux.filternum = 256;
	314	dvb->demux.feednum = 256;
	315	dvb->demux.start_feed = start_feed;
	316	dvb->demux.stop_feed = stop_feed;
e3569abc	317
3421b778 AT	318	result = dvb_dmx_init(&dvb->demux);
	319	if (result < 0) {
	320	printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
	321	dev->name, result);
	322	goto fail_dmx;
	323	}
	324
	325	dvb->dmxdev.filternum = 256;
	326	dvb->dmxdev.demux = &dvb->demux.dmx;
	327	dvb->dmxdev.capabilities = 0;
	328	result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
	329	if (result < 0) {
	330	printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
	331	dev->name, result);
	332	goto fail_dmxdev;
	333	}
52284c3e	334
3421b778 AT	335	dvb->fe_hw.source = DMX_FRONTEND_0;
	336	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	337	if (result < 0) {
	338	printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
	339	dev->name, result);
	340	goto fail_fe_hw;
	341	}
	342
	343	dvb->fe_mem.source = DMX_MEMORY_FE;
	344	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
	345	if (result < 0) {
	346	printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
	347	dev->name, result);
	348	goto fail_fe_mem;
	349	}
	350
	351	result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	352	if (result < 0) {
	353	printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
	354	dev->name, result);
	355	goto fail_fe_conn;
	356	}
	357
	358	/* register network adapter */
	359	dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
	360	return 0;
	361
	362	fail_fe_conn:
	363	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
	364	fail_fe_mem:
	365	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	366	fail_fe_hw:
	367	dvb_dmxdev_release(&dvb->dmxdev);
	368	fail_dmxdev:
	369	dvb_dmx_release(&dvb->demux);
	370	fail_dmx:
	371	dvb_unregister_frontend(dvb->frontend);
	372	fail_frontend:
	373	dvb_frontend_detach(dvb->frontend);
	374	dvb_unregister_adapter(&dvb->adapter);
	375	fail_adapter:
	376	return result;
	377	}
	378
	379	static void unregister_dvb(struct em28xx_dvb *dvb)
	380	{
	381	dvb_net_release(&dvb->net);
	382	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
	383	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	384	dvb_dmxdev_release(&dvb->dmxdev);
	385	dvb_dmx_release(&dvb->demux);
	386	dvb_unregister_frontend(dvb->frontend);
	387	dvb_frontend_detach(dvb->frontend);
	388	dvb_unregister_adapter(&dvb->adapter);
	389	}
	390
	391
	392	static int dvb_init(struct em28xx *dev)
	393	{
	394	int result = 0;
	395	struct em28xx_dvb *dvb;
	396
df619181 DH	397	if (!dev->has_dvb) {
	398	/* This device does not support the extension */
	399	return 0;
	400	}
	401
3421b778	402	dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
6ea54d93 DSL	403
	404	if (dvb == NULL) {
	405	printk(KERN_INFO "em28xx_dvb: memory allocation failed\n");
3421b778 AT	406	return -ENOMEM;
	407	}
	408	dev->dvb = dvb;
3aefb79a	409
c67ec53f	410	em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
3aefb79a MCC	411	/* init frontend */
3aefb79a MCC	412	switch (dev->model) {
227ad4ab	413	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_950:
4fd305b2	414	case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
e14b3658	415	case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
3421b778 AT	416	dvb->frontend = dvb_attach(lgdt330x_attach,
	417	&em2880_lgdt3303_dev,
	418	&dev->i2c_adap);
	419	if (attach_xc3028(0x61, dev) < 0) {
	420	result = -EINVAL;
	421	goto out_free;
	422	}
227ad4ab	423	break;
7e6388a1	424	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
3421b778 AT	425	dvb->frontend = dvb_attach(zl10353_attach,
	426	&em28xx_zl10353_with_xc3028,
	427	&dev->i2c_adap);
	428	if (attach_xc3028(0x61, dev) < 0) {
	429	result = -EINVAL;
	430	goto out_free;
	431	}
7e6388a1	432	break;
17d9d558 DH	433	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
	434	#ifdef EM28XX_DRX397XD_SUPPORT
	435	/* We don't have the config structure properly populated, so
	436	this is commented out for now */
	437	dvb->frontend = dvb_attach(drx397xD_attach,
	438	&em28xx_drx397xD_with_xc3028,
	439	&dev->i2c_adap);
	440	if (attach_xc3028(0x61, dev) < 0) {
	441	result = -EINVAL;
	442	goto out_free;
	443	}
	444	break;
	445	#endif
655b8408	446	case EM2880_BOARD_TERRATEC_HYBRID_XS:
	447	dvb->frontend = dvb_attach(zl10353_attach,
	448	&em28xx_zl10353_with_xc3028,
	449	&dev->i2c_adap);
	450	if (attach_xc3028(0x61, dev) < 0) {
	451	result = -EINVAL;
	452	goto out_free;
	453	}
	454	break;
3aefb79a MCC	455	default:
	456	printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card"
	457	" isn't supported yet\n",
	458	dev->name);
	459	break;
	460	}
3421b778	461	if (NULL == dvb->frontend) {
3aefb79a MCC	462	printk(KERN_ERR
	463	"%s/2: frontend initialization failed\n",
	464	dev->name);
3421b778 AT	465	result = -EINVAL;
3421b778 AT	466	goto out_free;
3aefb79a MCC	467	}
	468
	469	/* register everything */
3421b778 AT	470	result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
3421b778 AT	471
6ea54d93	472	if (result < 0)
3421b778	473	goto out_free;
3421b778	474
c67ec53f	475	em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
102a0b08	476	printk(KERN_INFO "Successfully loaded em28xx-dvb\n");
3421b778 AT	477	return 0;
	478
	479	out_free:
c67ec53f	480	em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
3421b778 AT	481	kfree(dvb);
	482	dev->dvb = NULL;
	483	return result;
3aefb79a MCC	484	}
	485
	486	static int dvb_fini(struct em28xx *dev)
	487	{
df619181 DH	488	if (!dev->has_dvb) {
	489	/* This device does not support the extension */
	490	return 0;
	491	}
	492
3421b778 AT	493	if (dev->dvb) {
	494	unregister_dvb(dev->dvb);
	495	dev->dvb = NULL;
	496	}
3aefb79a MCC	497
	498	return 0;
	499	}
	500
	501	static struct em28xx_ops dvb_ops = {
	502	.id = EM28XX_DVB,
	503	.name = "Em28xx dvb Extension",
	504	.init = dvb_init,
	505	.fini = dvb_fini,
	506	};
	507
	508	static int __init em28xx_dvb_register(void)
	509	{
	510	return em28xx_register_extension(&dvb_ops);
	511	}
	512
	513	static void __exit em28xx_dvb_unregister(void)
	514	{
	515	em28xx_unregister_extension(&dvb_ops);
	516	}
	517
	518	module_init(em28xx_dvb_register);
	519	module_exit(em28xx_dvb_unregister);