[GitHub/mt8127/android_kernel_alcatel_ttab.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

 (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"

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 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 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);
		dvb_unregister_frontend(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;
	}
	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;

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