[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"
#include "s5h1409.h"

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_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;
	int max_dvb_packet_size;

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

	max_dvb_packet_size = em28xx_isoc_dvb_max_packetsize(dev);

	return em28xx_init_isoc(dev, EM28XX_DVB_MAX_PACKETS,
				EM28XX_DVB_NUM_BUFS, max_dvb_packet_size,
				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_SUSPEND);

	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_SUSPEND);
}

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

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,
};

static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
	.demod_address = 0x32 >> 1,
	.output_mode   = S5H1409_PARALLEL_OUTPUT,
	.gpio          = S5H1409_GPIO_OFF,
	.inversion     = S5H1409_INVERSION_OFF,
	.status_mode   = S5H1409_DEMODLOCKING,
	.mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
};

#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;

	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;
}

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

static 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->board.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 EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
	case EM2883_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:
	case EM2880_BOARD_TERRATEC_HYBRID_XS:
	case EM2880_BOARD_KWORLD_DVB_310U:
	case EM2880_BOARD_EMPIRE_DUAL_TV:
		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 EM2883_BOARD_KWORLD_HYBRID_330U:
		dvb->frontend = dvb_attach(s5h1409_attach,
					   &em28xx_s5h1409_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
	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;
	}
	/* define general-purpose callback pointer */
	dvb->frontend->callback = em28xx_tuner_callback;

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

	if (result < 0)
		goto out_free;

	em28xx_set_mode(dev, EM28XX_SUSPEND);
	printk(KERN_INFO "Successfully loaded em28xx-dvb\n");
	return 0;

out_free:
	em28xx_set_mode(dev, EM28XX_SUSPEND);
	kfree(dvb);
	dev->dvb = NULL;
	return result;
}

static int dvb_fini(struct em28xx *dev)
{
	if (!dev->board.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"
6e7b9ea0	31	#include "s5h1409.h"
3aefb79a MCC	32
	33	MODULE_DESCRIPTION("driver for em28xx based DVB cards");
	34	MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
	35	MODULE_LICENSE("GPL");
	36
	37	static unsigned int debug;
	38	module_param(debug, int, 0644);
	39	MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
	40
	41	DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
	42
	43	#define dprintk(level, fmt, arg...) do { \
	44	if (debug >= level) \
3421b778	45	printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \
3aefb79a MCC	46	} while (0)
3aefb79a MCC	47
3421b778	48	#define EM28XX_DVB_NUM_BUFS 5
3421b778 AT	49	#define EM28XX_DVB_MAX_PACKETS 64
	50
	51	struct em28xx_dvb {
	52	struct dvb_frontend *frontend;
	53
	54	/* feed count management */
	55	struct mutex lock;
	56	int nfeeds;
	57
	58	/* general boilerplate stuff */
	59	struct dvb_adapter adapter;
	60	struct dvb_demux demux;
	61	struct dmxdev dmxdev;
	62	struct dmx_frontend fe_hw;
	63	struct dmx_frontend fe_mem;
	64	struct dvb_net net;
	65	};
	66
	67
	68	static inline void print_err_status(struct em28xx *dev,
	69	int packet, int status)
3aefb79a	70	{
3421b778	71	char *errmsg = "Unknown";
3aefb79a	72
3421b778 AT	73	switch (status) {
	74	case -ENOENT:
	75	errmsg = "unlinked synchronuously";
	76	break;
	77	case -ECONNRESET:
	78	errmsg = "unlinked asynchronuously";
	79	break;
	80	case -ENOSR:
	81	errmsg = "Buffer error (overrun)";
	82	break;
	83	case -EPIPE:
	84	errmsg = "Stalled (device not responding)";
	85	break;
	86	case -EOVERFLOW:
	87	errmsg = "Babble (bad cable?)";
	88	break;
	89	case -EPROTO:
	90	errmsg = "Bit-stuff error (bad cable?)";
	91	break;
	92	case -EILSEQ:
	93	errmsg = "CRC/Timeout (could be anything)";
	94	break;
	95	case -ETIME:
	96	errmsg = "Device does not respond";
	97	break;
	98	}
	99	if (packet < 0) {
	100	dprintk(1, "URB status %d [%s].\n", status, errmsg);
	101	} else {
6ea54d93 DSL	102	dprintk(1, "URB packet %d, status %d [%s].\n",
6ea54d93 DSL	103	packet, status, errmsg);
3421b778 AT	104	}
3421b778 AT	105	}
3aefb79a	106
3421b778 AT	107	static inline int dvb_isoc_copy(struct em28xx dev, struct urb urb)
	108	{
	109	int i;
3aefb79a	110
3421b778 AT	111	if (!dev)
3421b778 AT	112	return 0;
3aefb79a	113
3421b778 AT	114	if ((dev->state & DEV_DISCONNECTED) \|\| (dev->state & DEV_MISCONFIGURED))
	115	return 0;
	116
	117	if (urb->status < 0) {
	118	print_err_status(dev, -1, urb->status);
	119	if (urb->status == -ENOENT)
	120	return 0;
	121	}
	122
	123	for (i = 0; i < urb->number_of_packets; i++) {
	124	int status = urb->iso_frame_desc[i].status;
	125
	126	if (status < 0) {
	127	print_err_status(dev, i, status);
	128	if (urb->iso_frame_desc[i].status != -EPROTO)
	129	continue;
	130	}
	131
	132	dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer +
	133	urb->iso_frame_desc[i].offset,
	134	urb->iso_frame_desc[i].actual_length);
	135	}
	136
	137	return 0;
	138	}
	139
6ea54d93 DSL	140	static int start_streaming(struct em28xx_dvb *dvb)
6ea54d93 DSL	141	{
c67ec53f	142	int rc;
3421b778	143	struct em28xx *dev = dvb->adapter.priv;
d18e2fda	144	int max_dvb_packet_size;
3421b778 AT	145
3421b778 AT	146	usb_set_interface(dev->udev, 0, 1);
c67ec53f MCC	147	rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
	148	if (rc < 0)
	149	return rc;
3421b778	150
d18e2fda DH	151	max_dvb_packet_size = em28xx_isoc_dvb_max_packetsize(dev);
d18e2fda DH	152
3421b778	153	return em28xx_init_isoc(dev, EM28XX_DVB_MAX_PACKETS,
d18e2fda	154	EM28XX_DVB_NUM_BUFS, max_dvb_packet_size,
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	163
2fe3e2ee	164	em28xx_set_mode(dev, EM28XX_SUSPEND);
c67ec53f	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
2fe3e2ee	218	return em28xx_set_mode(dev, EM28XX_SUSPEND);
e3569abc MCC	219	}
e3569abc MCC	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
6e7b9ea0 RK	235	static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
	236	.demod_address = 0x32 >> 1,
	237	.output_mode = S5H1409_PARALLEL_OUTPUT,
	238	.gpio = S5H1409_GPIO_OFF,
	239	.inversion = S5H1409_INVERSION_OFF,
	240	.status_mode = S5H1409_DEMODLOCKING,
	241	.mpeg_timing = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
	242	};
	243
17d9d558 DH	244	#ifdef EM28XX_DRX397XD_SUPPORT
	245	/* [TODO] djh - not sure yet what the device config needs to contain */
	246	static struct drx397xD_config em28xx_drx397xD_with_xc3028 = {
	247	.demod_address = (0xe0 >> 1),
	248	};
	249	#endif
	250
3aefb79a MCC	251	/* ------------------------------------------------------------------ */
	252
	253	static int attach_xc3028(u8 addr, struct em28xx *dev)
	254	{
	255	struct dvb_frontend *fe;
3ca9c093 MCC	256	struct xc2028_config cfg;
3ca9c093 MCC	257
6ea54d93	258	memset(&cfg, 0, sizeof(cfg));
3ca9c093 MCC	259	cfg.i2c_adap = &dev->i2c_adap;
3ca9c093 MCC	260	cfg.i2c_addr = addr;
3ca9c093	261
3421b778	262	if (!dev->dvb->frontend) {
3aefb79a MCC	263	printk(KERN_ERR "%s/2: dvb frontend not attached. "
	264	"Can't attach xc3028\n",
	265	dev->name);
	266	return -EINVAL;
	267	}
	268
3421b778	269	fe = dvb_attach(xc2028_attach, dev->dvb->frontend, &cfg);
3aefb79a MCC	270	if (!fe) {
	271	printk(KERN_ERR "%s/2: xc3028 attach failed\n",
	272	dev->name);
3421b778	273	dvb_frontend_detach(dev->dvb->frontend);
3421b778	274	dev->dvb->frontend = NULL;
3aefb79a MCC	275	return -EINVAL;
	276	}
	277
	278	printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name);
	279
	280	return 0;
	281	}
	282
3421b778 AT	283	/* ------------------------------------------------------------------ */
3421b778 AT	284
d45b9b8a	285	static int register_dvb(struct em28xx_dvb *dvb,
3421b778 AT	286	struct module *module,
	287	struct em28xx *dev,
	288	struct device *device)
3aefb79a	289	{
3421b778	290	int result;
3aefb79a	291
3421b778	292	mutex_init(&dvb->lock);
3aefb79a	293
3421b778 AT	294	/* register adapter */
	295	result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
	296	adapter_nr);
	297	if (result < 0) {
	298	printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
	299	dev->name, result);
	300	goto fail_adapter;
	301	}
e3569abc MCC	302
	303	/* Ensure all frontends negotiate bus access */
	304	dvb->frontend->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
	305
3421b778 AT	306	dvb->adapter.priv = dev;
	307
	308	/* register frontend */
	309	result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
	310	if (result < 0) {
	311	printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
	312	dev->name, result);
	313	goto fail_frontend;
	314	}
	315
	316	/* register demux stuff */
	317	dvb->demux.dmx.capabilities =
	318	DMX_TS_FILTERING \| DMX_SECTION_FILTERING \|
	319	DMX_MEMORY_BASED_FILTERING;
	320	dvb->demux.priv = dvb;
	321	dvb->demux.filternum = 256;
	322	dvb->demux.feednum = 256;
	323	dvb->demux.start_feed = start_feed;
	324	dvb->demux.stop_feed = stop_feed;
e3569abc	325
3421b778 AT	326	result = dvb_dmx_init(&dvb->demux);
	327	if (result < 0) {
	328	printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
	329	dev->name, result);
	330	goto fail_dmx;
	331	}
	332
	333	dvb->dmxdev.filternum = 256;
	334	dvb->dmxdev.demux = &dvb->demux.dmx;
	335	dvb->dmxdev.capabilities = 0;
	336	result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
	337	if (result < 0) {
	338	printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
	339	dev->name, result);
	340	goto fail_dmxdev;
	341	}
52284c3e	342
3421b778 AT	343	dvb->fe_hw.source = DMX_FRONTEND_0;
	344	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	345	if (result < 0) {
	346	printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
	347	dev->name, result);
	348	goto fail_fe_hw;
	349	}
	350
	351	dvb->fe_mem.source = DMX_MEMORY_FE;
	352	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
	353	if (result < 0) {
	354	printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
	355	dev->name, result);
	356	goto fail_fe_mem;
	357	}
	358
	359	result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	360	if (result < 0) {
	361	printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
	362	dev->name, result);
	363	goto fail_fe_conn;
	364	}
	365
	366	/* register network adapter */
	367	dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
	368	return 0;
	369
	370	fail_fe_conn:
	371	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
	372	fail_fe_mem:
	373	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	374	fail_fe_hw:
	375	dvb_dmxdev_release(&dvb->dmxdev);
	376	fail_dmxdev:
	377	dvb_dmx_release(&dvb->demux);
	378	fail_dmx:
	379	dvb_unregister_frontend(dvb->frontend);
	380	fail_frontend:
	381	dvb_frontend_detach(dvb->frontend);
	382	dvb_unregister_adapter(&dvb->adapter);
	383	fail_adapter:
	384	return result;
	385	}
	386
	387	static void unregister_dvb(struct em28xx_dvb *dvb)
	388	{
	389	dvb_net_release(&dvb->net);
	390	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
	391	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	392	dvb_dmxdev_release(&dvb->dmxdev);
	393	dvb_dmx_release(&dvb->demux);
	394	dvb_unregister_frontend(dvb->frontend);
	395	dvb_frontend_detach(dvb->frontend);
	396	dvb_unregister_adapter(&dvb->adapter);
	397	}
	398
	399
	400	static int dvb_init(struct em28xx *dev)
	401	{
	402	int result = 0;
	403	struct em28xx_dvb *dvb;
	404
505b6d0b	405	if (!dev->board.has_dvb) {
df619181 DH	406	/* This device does not support the extension */
	407	return 0;
	408	}
	409
3421b778	410	dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
6ea54d93 DSL	411
	412	if (dvb == NULL) {
	413	printk(KERN_INFO "em28xx_dvb: memory allocation failed\n");
3421b778 AT	414	return -ENOMEM;
	415	}
	416	dev->dvb = dvb;
3aefb79a	417
c67ec53f	418	em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
3aefb79a MCC	419	/* init frontend */
3aefb79a MCC	420	switch (dev->model) {
f89bc329	421	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
10ac6603	422	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
4fd305b2	423	case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
e14b3658	424	case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
3421b778 AT	425	dvb->frontend = dvb_attach(lgdt330x_attach,
	426	&em2880_lgdt3303_dev,
	427	&dev->i2c_adap);
	428	if (attach_xc3028(0x61, dev) < 0) {
	429	result = -EINVAL;
	430	goto out_free;
	431	}
227ad4ab	432	break;
7e6388a1	433	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
46510b56 TM	434	case EM2880_BOARD_TERRATEC_HYBRID_XS:
46510b56 TM	435	case EM2880_BOARD_KWORLD_DVB_310U:
e5db5d44	436	case EM2880_BOARD_EMPIRE_DUAL_TV:
3421b778 AT	437	dvb->frontend = dvb_attach(zl10353_attach,
	438	&em28xx_zl10353_with_xc3028,
	439	&dev->i2c_adap);
	440	if (attach_xc3028(0x61, dev) < 0) {
	441	result = -EINVAL;
	442	goto out_free;
	443	}
7e6388a1	444	break;
6e7b9ea0 RK	445	case EM2883_BOARD_KWORLD_HYBRID_330U:
	446	dvb->frontend = dvb_attach(s5h1409_attach,
	447	&em28xx_s5h1409_with_xc3028,
	448	&dev->i2c_adap);
	449	if (attach_xc3028(0x61, dev) < 0) {
	450	result = -EINVAL;
	451	goto out_free;
	452	}
	453	break;
17d9d558 DH	454	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
	455	#ifdef EM28XX_DRX397XD_SUPPORT
	456	/* We don't have the config structure properly populated, so
	457	this is commented out for now */
	458	dvb->frontend = dvb_attach(drx397xD_attach,
	459	&em28xx_drx397xD_with_xc3028,
	460	&dev->i2c_adap);
	461	if (attach_xc3028(0x61, dev) < 0) {
	462	result = -EINVAL;
	463	goto out_free;
	464	}
	465	break;
	466	#endif
3aefb79a MCC	467	default:
	468	printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card"
	469	" isn't supported yet\n",
	470	dev->name);
	471	break;
	472	}
3421b778	473	if (NULL == dvb->frontend) {
3aefb79a MCC	474	printk(KERN_ERR
	475	"%s/2: frontend initialization failed\n",
	476	dev->name);
3421b778 AT	477	result = -EINVAL;
3421b778 AT	478	goto out_free;
3aefb79a	479	}
d7cba043 MK	480	/* define general-purpose callback pointer */
d7cba043 MK	481	dvb->frontend->callback = em28xx_tuner_callback;
3aefb79a MCC	482
3aefb79a MCC	483	/* register everything */
3421b778 AT	484	result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
3421b778 AT	485
6ea54d93	486	if (result < 0)
3421b778	487	goto out_free;
3421b778	488
2fe3e2ee	489	em28xx_set_mode(dev, EM28XX_SUSPEND);
102a0b08	490	printk(KERN_INFO "Successfully loaded em28xx-dvb\n");
3421b778 AT	491	return 0;
	492
	493	out_free:
2fe3e2ee	494	em28xx_set_mode(dev, EM28XX_SUSPEND);
3421b778 AT	495	kfree(dvb);
	496	dev->dvb = NULL;
	497	return result;
3aefb79a MCC	498	}
	499
	500	static int dvb_fini(struct em28xx *dev)
	501	{
505b6d0b	502	if (!dev->board.has_dvb) {
df619181 DH	503	/* This device does not support the extension */
	504	return 0;
	505	}
	506
3421b778 AT	507	if (dev->dvb) {
	508	unregister_dvb(dev->dvb);
	509	dev->dvb = NULL;
	510	}
3aefb79a MCC	511
	512	return 0;
	513	}
	514
	515	static struct em28xx_ops dvb_ops = {
	516	.id = EM28XX_DVB,
	517	.name = "Em28xx dvb Extension",
	518	.init = dvb_init,
	519	.fini = dvb_fini,
	520	};
	521
	522	static int __init em28xx_dvb_register(void)
	523	{
	524	return em28xx_register_extension(&dvb_ops);
	525	}
	526
	527	static void __exit em28xx_dvb_unregister(void)
	528	{
	529	em28xx_unregister_extension(&dvb_ops);
	530	}
	531
	532	module_init(em28xx_dvb_register);
	533	module_exit(em28xx_dvb_unregister);