[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
	- 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 <media/tuner.h>
#include "tuner-simple.h"

#include "lgdt330x.h"
#include "zl10353.h"
#include "s5h1409.h"
#include "mt352.h"
#include "mt352_priv.h" /* FIXME */

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
};

static struct zl10353_config em28xx_terratec_xs_zl10353_xc3028 = {
	.demod_address = (0x1e >> 1),
	.no_tuner = 1,
	.disable_i2c_gate_ctrl = 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 mt352_terratec_xs_init(struct dvb_frontend *fe)
{
	/* Values extracted from a USB trace of the Terratec Windows driver */
	static u8 clock_config[]   = { CLOCK_CTL,  0x38, 0x2c };
	static u8 reset[]          = { RESET,      0x80 };
	static u8 adc_ctl_1_cfg[]  = { ADC_CTL_1,  0x40 };
	static u8 agc_cfg[]        = { AGC_TARGET, 0x28, 0xa0 };
	static u8 input_freq_cfg[] = { INPUT_FREQ_1, 0x31, 0xb8 };
	static u8 rs_err_cfg[]     = { RS_ERR_PER_1, 0x00, 0x4d };
	static u8 capt_range_cfg[] = { CAPT_RANGE, 0x32 };
	static u8 trl_nom_cfg[]    = { TRL_NOMINAL_RATE_1, 0x64, 0x00 };
	static u8 tps_given_cfg[]  = { TPS_GIVEN_1, 0x40, 0x80, 0x50 };
	static u8 tuner_go[]       = { TUNER_GO, 0x01};

	mt352_write(fe, clock_config,   sizeof(clock_config));
	udelay(200);
	mt352_write(fe, reset,          sizeof(reset));
	mt352_write(fe, adc_ctl_1_cfg,  sizeof(adc_ctl_1_cfg));
	mt352_write(fe, agc_cfg,        sizeof(agc_cfg));
	mt352_write(fe, input_freq_cfg, sizeof(input_freq_cfg));
	mt352_write(fe, rs_err_cfg,     sizeof(rs_err_cfg));
	mt352_write(fe, capt_range_cfg, sizeof(capt_range_cfg));
	mt352_write(fe, trl_nom_cfg,    sizeof(trl_nom_cfg));
	mt352_write(fe, tps_given_cfg,  sizeof(tps_given_cfg));
	mt352_write(fe, tuner_go,       sizeof(tuner_go));
	return 0;
}

static struct mt352_config terratec_xs_mt352_cfg = {
	.demod_address = (0x1e >> 1),
	.no_tuner = 1,
	.if2 = 45600,
	.demod_init = mt352_terratec_xs_init,
};

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

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_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 EM2880_BOARD_TERRATEC_HYBRID_XS:
		dvb->frontend = dvb_attach(zl10353_attach,
					   &em28xx_terratec_xs_zl10353_xc3028,
					   &dev->i2c_adap);
		if (dvb->frontend == NULL) {
			/* This board could have either a zl10353 or a mt352.
			   If the chip id isn't for zl10353, try mt352 */
			dvb->frontend = dvb_attach(mt352_attach,
						   &terratec_xs_mt352_cfg,
						   &dev->i2c_adap);
		}

		if (attach_xc3028(0x61, dev) < 0) {
			result = -EINVAL;
			goto out_free;
		}
		break;
	case EM2883_BOARD_KWORLD_HYBRID_330U:
	case EM2882_BOARD_EVGA_INDTUBE:
		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 EM2882_BOARD_KWORLD_ATSC_315U:
		dvb->frontend = dvb_attach(lgdt330x_attach,
					   &em2880_lgdt3303_dev,
					   &dev->i2c_adap);
		if (dvb->frontend != NULL) {
			if (!dvb_attach(simple_tuner_attach, dvb->frontend,
				&dev->i2c_adap, 0x61, TUNER_THOMSON_DTT761X)) {
				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>
d7de5d8f FM	28	#include <media/tuner.h>
d7de5d8f FM	29	#include "tuner-simple.h"
3aefb79a MCC	30
3aefb79a MCC	31	#include "lgdt330x.h"
7e6388a1	32	#include "zl10353.h"
6e7b9ea0	33	#include "s5h1409.h"
4fb202a8 DH	34	#include "mt352.h"
4fb202a8 DH	35	#include "mt352_priv.h" /* FIXME */
3aefb79a MCC	36
	37	MODULE_DESCRIPTION("driver for em28xx based DVB cards");
	38	MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
	39	MODULE_LICENSE("GPL");
	40
	41	static unsigned int debug;
	42	module_param(debug, int, 0644);
	43	MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
	44
	45	DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
	46
	47	#define dprintk(level, fmt, arg...) do { \
	48	if (debug >= level) \
3421b778	49	printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \
3aefb79a MCC	50	} while (0)
3aefb79a MCC	51
3421b778	52	#define EM28XX_DVB_NUM_BUFS 5
3421b778 AT	53	#define EM28XX_DVB_MAX_PACKETS 64
	54
	55	struct em28xx_dvb {
	56	struct dvb_frontend *frontend;
	57
	58	/* feed count management */
	59	struct mutex lock;
	60	int nfeeds;
	61
	62	/* general boilerplate stuff */
	63	struct dvb_adapter adapter;
	64	struct dvb_demux demux;
	65	struct dmxdev dmxdev;
	66	struct dmx_frontend fe_hw;
	67	struct dmx_frontend fe_mem;
	68	struct dvb_net net;
	69	};
	70
	71
	72	static inline void print_err_status(struct em28xx *dev,
	73	int packet, int status)
3aefb79a	74	{
3421b778	75	char *errmsg = "Unknown";
3aefb79a	76
3421b778 AT	77	switch (status) {
	78	case -ENOENT:
	79	errmsg = "unlinked synchronuously";
	80	break;
	81	case -ECONNRESET:
	82	errmsg = "unlinked asynchronuously";
	83	break;
	84	case -ENOSR:
	85	errmsg = "Buffer error (overrun)";
	86	break;
	87	case -EPIPE:
	88	errmsg = "Stalled (device not responding)";
	89	break;
	90	case -EOVERFLOW:
	91	errmsg = "Babble (bad cable?)";
	92	break;
	93	case -EPROTO:
	94	errmsg = "Bit-stuff error (bad cable?)";
	95	break;
	96	case -EILSEQ:
	97	errmsg = "CRC/Timeout (could be anything)";
	98	break;
	99	case -ETIME:
	100	errmsg = "Device does not respond";
	101	break;
	102	}
	103	if (packet < 0) {
	104	dprintk(1, "URB status %d [%s].\n", status, errmsg);
	105	} else {
6ea54d93 DSL	106	dprintk(1, "URB packet %d, status %d [%s].\n",
6ea54d93 DSL	107	packet, status, errmsg);
3421b778 AT	108	}
3421b778 AT	109	}
3aefb79a	110
3421b778 AT	111	static inline int dvb_isoc_copy(struct em28xx dev, struct urb urb)
	112	{
	113	int i;
3aefb79a	114
3421b778 AT	115	if (!dev)
3421b778 AT	116	return 0;
3aefb79a	117
3421b778 AT	118	if ((dev->state & DEV_DISCONNECTED) \|\| (dev->state & DEV_MISCONFIGURED))
	119	return 0;
	120
	121	if (urb->status < 0) {
	122	print_err_status(dev, -1, urb->status);
	123	if (urb->status == -ENOENT)
	124	return 0;
	125	}
	126
	127	for (i = 0; i < urb->number_of_packets; i++) {
	128	int status = urb->iso_frame_desc[i].status;
	129
	130	if (status < 0) {
	131	print_err_status(dev, i, status);
	132	if (urb->iso_frame_desc[i].status != -EPROTO)
	133	continue;
	134	}
	135
	136	dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer +
	137	urb->iso_frame_desc[i].offset,
	138	urb->iso_frame_desc[i].actual_length);
	139	}
	140
	141	return 0;
	142	}
	143
6ea54d93 DSL	144	static int start_streaming(struct em28xx_dvb *dvb)
6ea54d93 DSL	145	{
c67ec53f	146	int rc;
3421b778	147	struct em28xx *dev = dvb->adapter.priv;
d18e2fda	148	int max_dvb_packet_size;
3421b778 AT	149
3421b778 AT	150	usb_set_interface(dev->udev, 0, 1);
c67ec53f MCC	151	rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
	152	if (rc < 0)
	153	return rc;
3421b778	154
d18e2fda DH	155	max_dvb_packet_size = em28xx_isoc_dvb_max_packetsize(dev);
d18e2fda DH	156
3421b778	157	return em28xx_init_isoc(dev, EM28XX_DVB_MAX_PACKETS,
d18e2fda	158	EM28XX_DVB_NUM_BUFS, max_dvb_packet_size,
c67ec53f	159	dvb_isoc_copy);
3421b778 AT	160	}
3421b778 AT	161
6ea54d93 DSL	162	static int stop_streaming(struct em28xx_dvb *dvb)
6ea54d93 DSL	163	{
3421b778 AT	164	struct em28xx *dev = dvb->adapter.priv;
	165
	166	em28xx_uninit_isoc(dev);
c67ec53f	167
2fe3e2ee	168	em28xx_set_mode(dev, EM28XX_SUSPEND);
c67ec53f	169
3aefb79a MCC	170	return 0;
	171	}
	172
3421b778 AT	173	static int start_feed(struct dvb_demux_feed *feed)
	174	{
	175	struct dvb_demux *demux = feed->demux;
	176	struct em28xx_dvb *dvb = demux->priv;
	177	int rc, ret;
	178
	179	if (!demux->dmx.frontend)
	180	return -EINVAL;
	181
	182	mutex_lock(&dvb->lock);
	183	dvb->nfeeds++;
	184	rc = dvb->nfeeds;
	185
	186	if (dvb->nfeeds == 1) {
	187	ret = start_streaming(dvb);
6ea54d93 DSL	188	if (ret < 0)
6ea54d93 DSL	189	rc = ret;
3421b778 AT	190	}
	191
	192	mutex_unlock(&dvb->lock);
	193	return rc;
	194	}
	195
	196	static int stop_feed(struct dvb_demux_feed *feed)
	197	{
	198	struct dvb_demux *demux = feed->demux;
	199	struct em28xx_dvb *dvb = demux->priv;
	200	int err = 0;
	201
	202	mutex_lock(&dvb->lock);
	203	dvb->nfeeds--;
6ea54d93 DSL	204
6ea54d93 DSL	205	if (0 == dvb->nfeeds)
3421b778	206	err = stop_streaming(dvb);
6ea54d93	207
3421b778 AT	208	mutex_unlock(&dvb->lock);
	209	return err;
	210	}
	211
	212
e3569abc MCC	213
	214	/* ------------------------------------------------------------------ */
	215	static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
	216	{
	217	struct em28xx *dev = fe->dvb->priv;
	218
	219	if (acquire)
	220	return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
	221	else
2fe3e2ee	222	return em28xx_set_mode(dev, EM28XX_SUSPEND);
e3569abc MCC	223	}
e3569abc MCC	224
3aefb79a MCC	225	/* ------------------------------------------------------------------ */
3aefb79a MCC	226
227ad4ab MCC	227	static struct lgdt330x_config em2880_lgdt3303_dev = {
	228	.demod_address = 0x0e,
	229	.demod_chip = LGDT3303,
	230	};
3aefb79a	231
7e6388a1 AT	232	static struct zl10353_config em28xx_zl10353_with_xc3028 = {
	233	.demod_address = (0x1e >> 1),
	234	.no_tuner = 1,
	235	.parallel_ts = 1,
	236	.if2 = 45600,
	237	};
	238
6e7b9ea0 RK	239	static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
	240	.demod_address = 0x32 >> 1,
	241	.output_mode = S5H1409_PARALLEL_OUTPUT,
	242	.gpio = S5H1409_GPIO_OFF,
	243	.inversion = S5H1409_INVERSION_OFF,
	244	.status_mode = S5H1409_DEMODLOCKING,
	245	.mpeg_timing = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
	246	};
	247
f797608c DH	248	static struct zl10353_config em28xx_terratec_xs_zl10353_xc3028 = {
	249	.demod_address = (0x1e >> 1),
	250	.no_tuner = 1,
	251	.disable_i2c_gate_ctrl = 1,
	252	.parallel_ts = 1,
	253	.if2 = 45600,
	254	};
	255
17d9d558 DH	256	#ifdef EM28XX_DRX397XD_SUPPORT
	257	/* [TODO] djh - not sure yet what the device config needs to contain */
	258	static struct drx397xD_config em28xx_drx397xD_with_xc3028 = {
	259	.demod_address = (0xe0 >> 1),
	260	};
	261	#endif
	262
4fb202a8 DH	263	static int mt352_terratec_xs_init(struct dvb_frontend *fe)
	264	{
	265	/* Values extracted from a USB trace of the Terratec Windows driver */
	266	static u8 clock_config[] = { CLOCK_CTL, 0x38, 0x2c };
	267	static u8 reset[] = { RESET, 0x80 };
	268	static u8 adc_ctl_1_cfg[] = { ADC_CTL_1, 0x40 };
	269	static u8 agc_cfg[] = { AGC_TARGET, 0x28, 0xa0 };
	270	static u8 input_freq_cfg[] = { INPUT_FREQ_1, 0x31, 0xb8 };
	271	static u8 rs_err_cfg[] = { RS_ERR_PER_1, 0x00, 0x4d };
	272	static u8 capt_range_cfg[] = { CAPT_RANGE, 0x32 };
	273	static u8 trl_nom_cfg[] = { TRL_NOMINAL_RATE_1, 0x64, 0x00 };
	274	static u8 tps_given_cfg[] = { TPS_GIVEN_1, 0x40, 0x80, 0x50 };
ff69786b	275	static u8 tuner_go[] = { TUNER_GO, 0x01};
4fb202a8 DH	276
	277	mt352_write(fe, clock_config, sizeof(clock_config));
	278	udelay(200);
	279	mt352_write(fe, reset, sizeof(reset));
	280	mt352_write(fe, adc_ctl_1_cfg, sizeof(adc_ctl_1_cfg));
	281	mt352_write(fe, agc_cfg, sizeof(agc_cfg));
	282	mt352_write(fe, input_freq_cfg, sizeof(input_freq_cfg));
	283	mt352_write(fe, rs_err_cfg, sizeof(rs_err_cfg));
	284	mt352_write(fe, capt_range_cfg, sizeof(capt_range_cfg));
	285	mt352_write(fe, trl_nom_cfg, sizeof(trl_nom_cfg));
	286	mt352_write(fe, tps_given_cfg, sizeof(tps_given_cfg));
	287	mt352_write(fe, tuner_go, sizeof(tuner_go));
	288	return 0;
	289	}
	290
	291	static struct mt352_config terratec_xs_mt352_cfg = {
	292	.demod_address = (0x1e >> 1),
	293	.no_tuner = 1,
	294	.if2 = 45600,
	295	.demod_init = mt352_terratec_xs_init,
	296	};
	297
3aefb79a MCC	298	/* ------------------------------------------------------------------ */
	299
	300	static int attach_xc3028(u8 addr, struct em28xx *dev)
	301	{
	302	struct dvb_frontend *fe;
3ca9c093 MCC	303	struct xc2028_config cfg;
3ca9c093 MCC	304
6ea54d93	305	memset(&cfg, 0, sizeof(cfg));
3ca9c093 MCC	306	cfg.i2c_adap = &dev->i2c_adap;
3ca9c093 MCC	307	cfg.i2c_addr = addr;
3ca9c093	308
3421b778	309	if (!dev->dvb->frontend) {
3aefb79a MCC	310	printk(KERN_ERR "%s/2: dvb frontend not attached. "
	311	"Can't attach xc3028\n",
	312	dev->name);
	313	return -EINVAL;
	314	}
	315
3421b778	316	fe = dvb_attach(xc2028_attach, dev->dvb->frontend, &cfg);
3aefb79a MCC	317	if (!fe) {
	318	printk(KERN_ERR "%s/2: xc3028 attach failed\n",
	319	dev->name);
3421b778	320	dvb_frontend_detach(dev->dvb->frontend);
3421b778	321	dev->dvb->frontend = NULL;
3aefb79a MCC	322	return -EINVAL;
	323	}
	324
	325	printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name);
	326
	327	return 0;
	328	}
	329
3421b778 AT	330	/* ------------------------------------------------------------------ */
3421b778 AT	331
d45b9b8a	332	static int register_dvb(struct em28xx_dvb *dvb,
3421b778 AT	333	struct module *module,
	334	struct em28xx *dev,
	335	struct device *device)
3aefb79a	336	{
3421b778	337	int result;
3aefb79a	338
3421b778	339	mutex_init(&dvb->lock);
3aefb79a	340
3421b778 AT	341	/* register adapter */
	342	result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
	343	adapter_nr);
	344	if (result < 0) {
	345	printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
	346	dev->name, result);
	347	goto fail_adapter;
	348	}
e3569abc MCC	349
	350	/* Ensure all frontends negotiate bus access */
	351	dvb->frontend->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
	352
3421b778 AT	353	dvb->adapter.priv = dev;
	354
	355	/* register frontend */
	356	result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
	357	if (result < 0) {
	358	printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
	359	dev->name, result);
	360	goto fail_frontend;
	361	}
	362
	363	/* register demux stuff */
	364	dvb->demux.dmx.capabilities =
	365	DMX_TS_FILTERING \| DMX_SECTION_FILTERING \|
	366	DMX_MEMORY_BASED_FILTERING;
	367	dvb->demux.priv = dvb;
	368	dvb->demux.filternum = 256;
	369	dvb->demux.feednum = 256;
	370	dvb->demux.start_feed = start_feed;
	371	dvb->demux.stop_feed = stop_feed;
e3569abc	372
3421b778 AT	373	result = dvb_dmx_init(&dvb->demux);
	374	if (result < 0) {
	375	printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
	376	dev->name, result);
	377	goto fail_dmx;
	378	}
	379
	380	dvb->dmxdev.filternum = 256;
	381	dvb->dmxdev.demux = &dvb->demux.dmx;
	382	dvb->dmxdev.capabilities = 0;
	383	result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
	384	if (result < 0) {
	385	printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
	386	dev->name, result);
	387	goto fail_dmxdev;
	388	}
52284c3e	389
3421b778 AT	390	dvb->fe_hw.source = DMX_FRONTEND_0;
	391	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	392	if (result < 0) {
	393	printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
	394	dev->name, result);
	395	goto fail_fe_hw;
	396	}
	397
	398	dvb->fe_mem.source = DMX_MEMORY_FE;
	399	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
	400	if (result < 0) {
	401	printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
	402	dev->name, result);
	403	goto fail_fe_mem;
	404	}
	405
	406	result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	407	if (result < 0) {
	408	printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
	409	dev->name, result);
	410	goto fail_fe_conn;
	411	}
	412
	413	/* register network adapter */
	414	dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
	415	return 0;
	416
	417	fail_fe_conn:
	418	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
	419	fail_fe_mem:
	420	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	421	fail_fe_hw:
	422	dvb_dmxdev_release(&dvb->dmxdev);
	423	fail_dmxdev:
	424	dvb_dmx_release(&dvb->demux);
	425	fail_dmx:
	426	dvb_unregister_frontend(dvb->frontend);
	427	fail_frontend:
	428	dvb_frontend_detach(dvb->frontend);
	429	dvb_unregister_adapter(&dvb->adapter);
	430	fail_adapter:
	431	return result;
	432	}
	433
	434	static void unregister_dvb(struct em28xx_dvb *dvb)
	435	{
	436	dvb_net_release(&dvb->net);
	437	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
	438	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	439	dvb_dmxdev_release(&dvb->dmxdev);
	440	dvb_dmx_release(&dvb->demux);
	441	dvb_unregister_frontend(dvb->frontend);
	442	dvb_frontend_detach(dvb->frontend);
	443	dvb_unregister_adapter(&dvb->adapter);
	444	}
	445
	446
	447	static int dvb_init(struct em28xx *dev)
	448	{
	449	int result = 0;
	450	struct em28xx_dvb *dvb;
	451
505b6d0b	452	if (!dev->board.has_dvb) {
df619181 DH	453	/* This device does not support the extension */
	454	return 0;
	455	}
	456
3421b778	457	dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
6ea54d93 DSL	458
	459	if (dvb == NULL) {
	460	printk(KERN_INFO "em28xx_dvb: memory allocation failed\n");
3421b778 AT	461	return -ENOMEM;
	462	}
	463	dev->dvb = dvb;
3aefb79a	464
c67ec53f	465	em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
3aefb79a MCC	466	/* init frontend */
3aefb79a MCC	467	switch (dev->model) {
f89bc329	468	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
10ac6603	469	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
4fd305b2	470	case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
e14b3658	471	case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
3421b778 AT	472	dvb->frontend = dvb_attach(lgdt330x_attach,
	473	&em2880_lgdt3303_dev,
	474	&dev->i2c_adap);
	475	if (attach_xc3028(0x61, dev) < 0) {
	476	result = -EINVAL;
	477	goto out_free;
	478	}
227ad4ab	479	break;
7e6388a1	480	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
46510b56	481	case EM2880_BOARD_KWORLD_DVB_310U:
e5db5d44	482	case EM2880_BOARD_EMPIRE_DUAL_TV:
3421b778 AT	483	dvb->frontend = dvb_attach(zl10353_attach,
	484	&em28xx_zl10353_with_xc3028,
	485	&dev->i2c_adap);
	486	if (attach_xc3028(0x61, dev) < 0) {
	487	result = -EINVAL;
	488	goto out_free;
	489	}
7e6388a1	490	break;
f797608c DH	491	case EM2880_BOARD_TERRATEC_HYBRID_XS:
	492	dvb->frontend = dvb_attach(zl10353_attach,
	493	&em28xx_terratec_xs_zl10353_xc3028,
	494	&dev->i2c_adap);
	495	if (dvb->frontend == NULL) {
	496	/* This board could have either a zl10353 or a mt352.
	497	If the chip id isn't for zl10353, try mt352 */
4fb202a8 DH	498	dvb->frontend = dvb_attach(mt352_attach,
	499	&terratec_xs_mt352_cfg,
	500	&dev->i2c_adap);
f797608c	501	}
4fb202a8	502
f797608c DH	503	if (attach_xc3028(0x61, dev) < 0) {
	504	result = -EINVAL;
	505	goto out_free;
	506	}
	507	break;
6e7b9ea0	508	case EM2883_BOARD_KWORLD_HYBRID_330U:
19859229	509	case EM2882_BOARD_EVGA_INDTUBE:
6e7b9ea0 RK	510	dvb->frontend = dvb_attach(s5h1409_attach,
	511	&em28xx_s5h1409_with_xc3028,
	512	&dev->i2c_adap);
	513	if (attach_xc3028(0x61, dev) < 0) {
	514	result = -EINVAL;
	515	goto out_free;
	516	}
	517	break;
d7de5d8f FM	518	case EM2882_BOARD_KWORLD_ATSC_315U:
	519	dvb->frontend = dvb_attach(lgdt330x_attach,
	520	&em2880_lgdt3303_dev,
	521	&dev->i2c_adap);
	522	if (dvb->frontend != NULL) {
	523	if (!dvb_attach(simple_tuner_attach, dvb->frontend,
	524	&dev->i2c_adap, 0x61, TUNER_THOMSON_DTT761X)) {
	525	result = -EINVAL;
	526	goto out_free;
	527	}
	528	}
	529	break;
17d9d558 DH	530	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
	531	#ifdef EM28XX_DRX397XD_SUPPORT
	532	/* We don't have the config structure properly populated, so
	533	this is commented out for now */
	534	dvb->frontend = dvb_attach(drx397xD_attach,
	535	&em28xx_drx397xD_with_xc3028,
	536	&dev->i2c_adap);
	537	if (attach_xc3028(0x61, dev) < 0) {
	538	result = -EINVAL;
	539	goto out_free;
	540	}
	541	break;
	542	#endif
3aefb79a MCC	543	default:
	544	printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card"
	545	" isn't supported yet\n",
	546	dev->name);
	547	break;
	548	}
3421b778	549	if (NULL == dvb->frontend) {
3aefb79a MCC	550	printk(KERN_ERR
	551	"%s/2: frontend initialization failed\n",
	552	dev->name);
3421b778 AT	553	result = -EINVAL;
3421b778 AT	554	goto out_free;
3aefb79a	555	}
d7cba043 MK	556	/* define general-purpose callback pointer */
d7cba043 MK	557	dvb->frontend->callback = em28xx_tuner_callback;
3aefb79a MCC	558
3aefb79a MCC	559	/* register everything */
3421b778 AT	560	result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
3421b778 AT	561
6ea54d93	562	if (result < 0)
3421b778	563	goto out_free;
3421b778	564
2fe3e2ee	565	em28xx_set_mode(dev, EM28XX_SUSPEND);
102a0b08	566	printk(KERN_INFO "Successfully loaded em28xx-dvb\n");
3421b778 AT	567	return 0;
	568
	569	out_free:
2fe3e2ee	570	em28xx_set_mode(dev, EM28XX_SUSPEND);
3421b778 AT	571	kfree(dvb);
	572	dev->dvb = NULL;
	573	return result;
3aefb79a MCC	574	}
	575
	576	static int dvb_fini(struct em28xx *dev)
	577	{
505b6d0b	578	if (!dev->board.has_dvb) {
df619181 DH	579	/* This device does not support the extension */
	580	return 0;
	581	}
	582
3421b778 AT	583	if (dev->dvb) {
	584	unregister_dvb(dev->dvb);
	585	dev->dvb = NULL;
	586	}
3aefb79a MCC	587
	588	return 0;
	589	}
	590
	591	static struct em28xx_ops dvb_ops = {
	592	.id = EM28XX_DVB,
	593	.name = "Em28xx dvb Extension",
	594	.init = dvb_init,
	595	.fini = dvb_fini,
	596	};
	597
	598	static int __init em28xx_dvb_register(void)
	599	{
	600	return em28xx_register_extension(&dvb_ops);
	601	}
	602
	603	static void __exit em28xx_dvb_unregister(void)
	604	{
	605	em28xx_unregister_extension(&dvb_ops);
	606	}
	607
	608	module_init(em28xx_dvb_register);
	609	module_exit(em28xx_dvb_unregister);