em28xx-dvb.c 31.4 KB
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/*
 DVB device driver for em28xx

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 (c) 2008-2011 Mauro Carvalho Chehab <mchehab@infradead.org>
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 (c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com>
	- Fixes for the driver to properly work with HVR-950
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	- Fixes for the driver to properly work with Pinnacle PCTV HD Pro Stick
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	- Fixes for the driver to properly work with AMD ATI TV Wonder HD 600
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 (c) 2008 Aidan Thornton <makosoft@googlemail.com>

 Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by:
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	(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>
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#include <linux/slab.h>
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#include <linux/usb.h>

#include "em28xx.h"
#include <media/v4l2-common.h>
#include <media/videobuf-vmalloc.h>
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#include <media/tuner.h>
#include "tuner-simple.h"
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#include <linux/gpio.h>
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#include "lgdt330x.h"
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#include "lgdt3305.h"
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#include "zl10353.h"
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#include "s5h1409.h"
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#include "mt352.h"
#include "mt352_priv.h" /* FIXME */
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#include "tda1002x.h"
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#include "tda18271.h"
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#include "s921.h"
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#include "drxd.h"
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#include "cxd2820r.h"
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#include "tda18271c2dd.h"
#include "drxk.h"
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#include "tda10071.h"
#include "a8293.h"
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Aivar Päkk 已提交
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#include "qt1010.h"
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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) 						\
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	printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg);	\
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} while (0)

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struct em28xx_dvb {
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	struct dvb_frontend        *fe[2];
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	/* 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;
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	/* Due to DRX-K - probably need changes */
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	int (*gate_ctrl)(struct dvb_frontend *, int);
	struct semaphore      pll_mutex;
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	bool			dont_attach_fe1;
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	int			lna_gpio;
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};


static inline void print_err_status(struct em28xx *dev,
				     int packet, int status)
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{
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	char *errmsg = "Unknown";
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	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 {
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		dprintk(1, "URB packet %d, status %d [%s].\n",
			packet, status, errmsg);
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	}
}
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static inline int em28xx_dvb_isoc_copy(struct em28xx *dev, struct urb *urb)
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{
	int i;
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	if (!dev)
		return 0;
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	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;
}

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static int em28xx_start_streaming(struct em28xx_dvb *dvb)
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{
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	int rc;
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	struct em28xx *dev = dvb->adapter.priv;
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	int max_dvb_packet_size;
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	usb_set_interface(dev->udev, 0, dev->dvb_alt);
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	rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
	if (rc < 0)
		return rc;
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	max_dvb_packet_size = dev->dvb_max_pkt_size;
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	if (max_dvb_packet_size < 0)
		return max_dvb_packet_size;
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	dprintk(1, "Using %d buffers each with %d x %d bytes\n",
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		EM28XX_DVB_NUM_BUFS,
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		EM28XX_DVB_MAX_PACKETS,
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		max_dvb_packet_size);
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	return em28xx_init_isoc(dev, EM28XX_DIGITAL_MODE,
				EM28XX_DVB_MAX_PACKETS, EM28XX_DVB_NUM_BUFS,
				max_dvb_packet_size, em28xx_dvb_isoc_copy);
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}

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static int em28xx_stop_streaming(struct em28xx_dvb *dvb)
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{
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	struct em28xx *dev = dvb->adapter.priv;

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	em28xx_stop_urbs(dev);
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	em28xx_set_mode(dev, EM28XX_SUSPEND);
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	return 0;
}

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static int em28xx_start_feed(struct dvb_demux_feed *feed)
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{
	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) {
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		ret = em28xx_start_streaming(dvb);
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		if (ret < 0)
			rc = ret;
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	}

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

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static int em28xx_stop_feed(struct dvb_demux_feed *feed)
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{
	struct dvb_demux *demux  = feed->demux;
	struct em28xx_dvb *dvb = demux->priv;
	int err = 0;

	mutex_lock(&dvb->lock);
	dvb->nfeeds--;
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	if (0 == dvb->nfeeds)
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		err = em28xx_stop_streaming(dvb);
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	mutex_unlock(&dvb->lock);
	return err;
}


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/* ------------------------------------------------------------------ */
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
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		return em28xx_set_mode(dev, EM28XX_SUSPEND);
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}

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

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static struct lgdt330x_config em2880_lgdt3303_dev = {
	.demod_address = 0x0e,
	.demod_chip = LGDT3303,
};
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static struct lgdt3305_config em2870_lgdt3304_dev = {
	.i2c_addr           = 0x0e,
	.demod_chip         = LGDT3304,
	.spectral_inversion = 1,
	.deny_i2c_rptr      = 1,
	.mpeg_mode          = LGDT3305_MPEG_PARALLEL,
	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
	.vsb_if_khz         = 3250,
	.qam_if_khz         = 4000,
};

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static struct s921_config sharp_isdbt = {
	.demod_address = 0x30 >> 1
};

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

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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
};

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static struct tda18271_std_map kworld_a340_std_map = {
	.atsc_6   = { .if_freq = 3250, .agc_mode = 3, .std = 0,
		      .if_lvl = 1, .rfagc_top = 0x37, },
	.qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 1,
		      .if_lvl = 1, .rfagc_top = 0x37, },
};

static struct tda18271_config kworld_a340_config = {
	.std_map           = &kworld_a340_std_map,
};

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static struct zl10353_config em28xx_zl10353_xc3028_no_i2c_gate = {
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	.demod_address = (0x1e >> 1),
	.no_tuner = 1,
	.disable_i2c_gate_ctrl = 1,
	.parallel_ts = 1,
	.if2 = 45600,
};

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static struct drxd_config em28xx_drxd = {
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	.demod_address = 0x70,
	.demod_revision = 0xa2,
	.pll_type = DRXD_PLL_NONE,
	.clock = 12000,
	.insert_rs_byte = 1,
	.IF = 42800000,
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	.disable_i2c_gate_ctrl = 1,
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};

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static struct drxk_config terratec_h5_drxk = {
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	.adr = 0x29,
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	.single_master = 1,
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	.no_i2c_bridge = 1,
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	.microcode_name = "dvb-usb-terratec-h5-drxk.fw",
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	.qam_demod_parameter_count = 2,
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	.load_firmware_sync = true,
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};

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static struct drxk_config hauppauge_930c_drxk = {
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	.adr = 0x29,
	.single_master = 1,
	.no_i2c_bridge = 1,
	.microcode_name = "dvb-usb-hauppauge-hvr930c-drxk.fw",
	.chunk_size = 56,
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	.qam_demod_parameter_count = 2,
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	.load_firmware_sync = true,
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};

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struct drxk_config terratec_htc_stick_drxk = {
	.adr = 0x29,
	.single_master = 1,
	.no_i2c_bridge = 1,
	.microcode_name = "dvb-usb-terratec-htc-stick-drxk.fw",
	.chunk_size = 54,
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	.qam_demod_parameter_count = 2,
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	/* Required for the antenna_gpio to disable LNA. */
	.antenna_dvbt = true,
	/* The windows driver uses the same. This will disable LNA. */
	.antenna_gpio = 0x6,
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	.load_firmware_sync = true,
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};

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static struct drxk_config maxmedia_ub425_tc_drxk = {
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	.adr = 0x29,
	.single_master = 1,
	.no_i2c_bridge = 1,
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	.load_firmware_sync = true,
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};

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static struct drxk_config pctv_520e_drxk = {
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	.adr = 0x29,
	.single_master = 1,
	.microcode_name = "dvb-demod-drxk-pctv.fw",
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	.qam_demod_parameter_count = 2,
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	.chunk_size = 58,
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	.antenna_dvbt = true, /* disable LNA */
	.antenna_gpio = (1 << 2), /* disable LNA */
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	.load_firmware_sync = true,
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};

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static int drxk_gate_ctrl(struct dvb_frontend *fe, int enable)
{
	struct em28xx_dvb *dvb = fe->sec_priv;
	int status;

	if (!dvb)
		return -EINVAL;

	if (enable) {
		down(&dvb->pll_mutex);
		status = dvb->gate_ctrl(fe, 1);
	} else {
		status = dvb->gate_ctrl(fe, 0);
		up(&dvb->pll_mutex);
	}
	return status;
}

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static void hauppauge_hvr930c_init(struct em28xx *dev)
{
	int i;

	struct em28xx_reg_seq hauppauge_hvr930c_init[] = {
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		{EM2874_R80_GPIO,	0xff,	0xff,	0x65},
		{EM2874_R80_GPIO,	0xfb,	0xff,	0x32},
		{EM2874_R80_GPIO,	0xff,	0xff,	0xb8},
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		{ -1,                   -1,     -1,     -1},
	};
	struct em28xx_reg_seq hauppauge_hvr930c_end[] = {
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		{EM2874_R80_GPIO,	0xef,	0xff,	0x01},
		{EM2874_R80_GPIO,	0xaf,	0xff,	0x65},
		{EM2874_R80_GPIO,	0xef,	0xff,	0x76},
		{EM2874_R80_GPIO,	0xef,	0xff,	0x01},
		{EM2874_R80_GPIO,	0xcf,	0xff,	0x0b},
		{EM2874_R80_GPIO,	0xef,	0xff,	0x40},

		{EM2874_R80_GPIO,	0xcf,	0xff,	0x65},
		{EM2874_R80_GPIO,	0xef,	0xff,	0x65},
		{EM2874_R80_GPIO,	0xcf,	0xff,	0x0b},
		{EM2874_R80_GPIO,	0xef,	0xff,	0x65},
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		{ -1,                   -1,     -1,     -1},
	};

	struct {
		unsigned char r[4];
		int len;
	} regs[] = {
		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
		{{ 0x01, 0x02 }, 2},
		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
		{{ 0x01, 0x00 }, 2},
		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
		{{ 0x01, 0x00 }, 2},
		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
		{{ 0x04, 0x00 }, 2},
		{{ 0x00, 0x04 }, 2},
		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
		{{ 0x04, 0x14 }, 2},
		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
	};

	em28xx_gpio_set(dev, hauppauge_hvr930c_init);
	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
	msleep(10);
	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
	msleep(10);

	dev->i2c_client.addr = 0x82 >> 1;

	for (i = 0; i < ARRAY_SIZE(regs); i++)
		i2c_master_send(&dev->i2c_client, regs[i].r, regs[i].len);
	em28xx_gpio_set(dev, hauppauge_hvr930c_end);

	msleep(100);

	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
	msleep(30);

	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
	msleep(10);

}

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static void terratec_h5_init(struct em28xx *dev)
{
	int i;
	struct em28xx_reg_seq terratec_h5_init[] = {
		{EM28XX_R08_GPIO,	0xff,	0xff,	10},
		{EM2874_R80_GPIO,	0xf6,	0xff,	100},
		{EM2874_R80_GPIO,	0xf2,	0xff,	50},
		{EM2874_R80_GPIO,	0xf6,	0xff,	100},
		{ -1,                   -1,     -1,     -1},
	};
	struct em28xx_reg_seq terratec_h5_end[] = {
		{EM2874_R80_GPIO,	0xe6,	0xff,	100},
		{EM2874_R80_GPIO,	0xa6,	0xff,	50},
		{EM2874_R80_GPIO,	0xe6,	0xff,	100},
		{ -1,                   -1,     -1,     -1},
	};
	struct {
		unsigned char r[4];
		int len;
	} regs[] = {
		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
		{{ 0x01, 0x02 }, 2},
		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
		{{ 0x01, 0x00 }, 2},
		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
		{{ 0x01, 0x00 }, 2},
		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
		{{ 0x04, 0x00 }, 2},
		{{ 0x00, 0x04 }, 2},
		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
		{{ 0x04, 0x14 }, 2},
		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
	};

	em28xx_gpio_set(dev, terratec_h5_init);
	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
	msleep(10);
	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
	msleep(10);

	dev->i2c_client.addr = 0x82 >> 1;

	for (i = 0; i < ARRAY_SIZE(regs); i++)
		i2c_master_send(&dev->i2c_client, regs[i].r, regs[i].len);
	em28xx_gpio_set(dev, terratec_h5_end);
};

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static void terratec_htc_stick_init(struct em28xx *dev)
{
	int i;

	/*
	 * GPIO configuration:
	 * 0xff: unknown (does not affect DVB-T).
	 * 0xf6: DRX-K (demodulator).
	 * 0xe6: unknown (does not affect DVB-T).
	 * 0xb6: unknown (does not affect DVB-T).
	 */
	struct em28xx_reg_seq terratec_htc_stick_init[] = {
		{EM28XX_R08_GPIO,	0xff,	0xff,	10},
		{EM2874_R80_GPIO,	0xf6,	0xff,	100},
		{EM2874_R80_GPIO,	0xe6,	0xff,	50},
		{EM2874_R80_GPIO,	0xf6,	0xff,	100},
		{ -1,                   -1,     -1,     -1},
	};
	struct em28xx_reg_seq terratec_htc_stick_end[] = {
		{EM2874_R80_GPIO,	0xb6,	0xff,	100},
		{EM2874_R80_GPIO,	0xf6,	0xff,	50},
		{ -1,                   -1,     -1,     -1},
	};

	/* Init the analog decoder? */
	struct {
		unsigned char r[4];
		int len;
	} regs[] = {
		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
		{{ 0x01, 0x02 }, 2},
		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
		{{ 0x01, 0x00 }, 2},
		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
	};

	em28xx_gpio_set(dev, terratec_htc_stick_init);

	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
	msleep(10);
	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
	msleep(10);

	dev->i2c_client.addr = 0x82 >> 1;

	for (i = 0; i < ARRAY_SIZE(regs); i++)
		i2c_master_send(&dev->i2c_client, regs[i].r, regs[i].len);

	em28xx_gpio_set(dev, terratec_htc_stick_end);
};

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static void pctv_520e_init(struct em28xx *dev)
{
	/*
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	 * Init AVF4910B analog decoder. Looks like I2C traffic to
	 * digital demodulator and tuner are routed via AVF4910B.
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	 */
	int i;
	struct {
		unsigned char r[4];
		int len;
	} regs[] = {
		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
		{{ 0x01, 0x02 }, 2},
		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
		{{ 0x01, 0x00 }, 2},
		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
		{{ 0x01, 0x00 }, 2},
		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
	};

	dev->i2c_client.addr = 0x82 >> 1; /* 0x41 */

	for (i = 0; i < ARRAY_SIZE(regs); i++)
		i2c_master_send(&dev->i2c_client, regs[i].r, regs[i].len);
};

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static int em28xx_pctv_290e_set_lna(struct dvb_frontend *fe)
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{
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	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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	struct em28xx *dev = fe->dvb->priv;
#ifdef CONFIG_GPIOLIB
	struct em28xx_dvb *dvb = dev->dvb;
	int ret;
	unsigned long flags;

586 587
	if (c->lna == 1)
		flags = GPIOF_OUT_INIT_HIGH; /* enable LNA */
588
	else
589
		flags = GPIOF_OUT_INIT_LOW; /* disable LNA */
590 591 592 593 594 595 596 597 598

	ret = gpio_request_one(dvb->lna_gpio, flags, NULL);
	if (ret)
		em28xx_errdev("gpio request failed %d\n", ret);
	else
		gpio_free(dvb->lna_gpio);

	return ret;
#else
599 600
	dev_warn(&dev->udev->dev, "%s: LNA control is disabled (lna=%u)\n",
			KBUILD_MODNAME, c->lna);
601 602 603 604
	return 0;
#endif
}

605
static int em28xx_mt352_terratec_xs_init(struct dvb_frontend *fe)
606 607 608 609 610 611 612 613 614 615 616
{
	/* 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 };
617
	static u8 tuner_go[]       = { TUNER_GO, 0x01};
618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636

	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,
637
	.demod_init = em28xx_mt352_terratec_xs_init,
638 639
};

640 641 642 643 644
static struct tda10023_config em28xx_tda10023_config = {
	.demod_address = 0x0c,
	.invert = 1,
};

645 646 647 648 649 650 651
static struct cxd2820r_config em28xx_cxd2820r_config = {
	.i2c_address = (0xd8 >> 1),
	.ts_mode = CXD2820R_TS_SERIAL,
};

static struct tda18271_config em28xx_cxd2820r_tda18271_config = {
	.output_opt = TDA18271_OUTPUT_LT_OFF,
652
	.gate = TDA18271_GATE_DIGITAL,
653 654
};

655 656 657 658 659 660 661 662 663 664 665 666 667
static const struct tda10071_config em28xx_tda10071_config = {
	.i2c_address = 0x55, /* (0xaa >> 1) */
	.i2c_wr_max = 64,
	.ts_mode = TDA10071_TS_SERIAL,
	.spec_inv = 0,
	.xtal = 40444000, /* 40.444 MHz */
	.pll_multiplier = 20,
};

static const struct a8293_config em28xx_a8293_config = {
	.i2c_addr = 0x08, /* (0x10 >> 1) */
};

A
Aivar Päkk 已提交
668 669 670 671 672 673 674 675 676 677 678
static struct zl10353_config em28xx_zl10353_no_i2c_gate_dev = {
	.demod_address = (0x1e >> 1),
	.disable_i2c_gate_ctrl = 1,
	.no_tuner = 1,
	.parallel_ts = 1,
};
static struct qt1010_config em28xx_qt1010_config = {
	.i2c_address = 0x62

};

679 680
/* ------------------------------------------------------------------ */

681
static int em28xx_attach_xc3028(u8 addr, struct em28xx *dev)
682 683
{
	struct dvb_frontend *fe;
684 685
	struct xc2028_config cfg;

686
	memset(&cfg, 0, sizeof(cfg));
687 688 689
	cfg.i2c_adap  = &dev->i2c_adap;
	cfg.i2c_addr  = addr;

690
	if (!dev->dvb->fe[0]) {
691 692
		em28xx_errdev("/2: dvb frontend not attached. "
				"Can't attach xc3028\n");
693 694 695
		return -EINVAL;
	}

696
	fe = dvb_attach(xc2028_attach, dev->dvb->fe[0], &cfg);
697
	if (!fe) {
698
		em28xx_errdev("/2: xc3028 attach failed\n");
699 700
		dvb_frontend_detach(dev->dvb->fe[0]);
		dev->dvb->fe[0] = NULL;
701 702 703
		return -EINVAL;
	}

704
	em28xx_info("%s/2: xc3028 attached\n", dev->name);
705 706 707 708

	return 0;
}

709 710
/* ------------------------------------------------------------------ */

711 712
static int em28xx_register_dvb(struct em28xx_dvb *dvb, struct module *module,
			       struct em28xx *dev, struct device *device)
713
{
714
	int result;
715

716
	mutex_init(&dvb->lock);
717

718 719 720 721 722 723 724 725
	/* 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;
	}
726 727

	/* Ensure all frontends negotiate bus access */
728 729 730
	dvb->fe[0]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
	if (dvb->fe[1])
		dvb->fe[1]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
731

732 733 734
	dvb->adapter.priv = dev;

	/* register frontend */
735
	result = dvb_register_frontend(&dvb->adapter, dvb->fe[0]);
736 737 738
	if (result < 0) {
		printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
		       dev->name, result);
739 740 741 742 743 744 745 746 747 748 749
		goto fail_frontend0;
	}

	/* register 2nd frontend */
	if (dvb->fe[1]) {
		result = dvb_register_frontend(&dvb->adapter, dvb->fe[1]);
		if (result < 0) {
			printk(KERN_WARNING "%s: 2nd dvb_register_frontend failed (errno = %d)\n",
				dev->name, result);
			goto fail_frontend1;
		}
750 751 752 753 754 755 756 757 758
	}

	/* 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;
759 760
	dvb->demux.start_feed = em28xx_start_feed;
	dvb->demux.stop_feed  = em28xx_stop_feed;
761

762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777
	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;
	}
778

779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814
	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:
815 816 817 818 819 820 821 822
	if (dvb->fe[1])
		dvb_unregister_frontend(dvb->fe[1]);
	dvb_unregister_frontend(dvb->fe[0]);
fail_frontend1:
	if (dvb->fe[1])
		dvb_frontend_detach(dvb->fe[1]);
fail_frontend0:
	dvb_frontend_detach(dvb->fe[0]);
823 824 825 826 827
	dvb_unregister_adapter(&dvb->adapter);
fail_adapter:
	return result;
}

828
static void em28xx_unregister_dvb(struct em28xx_dvb *dvb)
829 830 831 832 833 834
{
	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);
835 836 837
	if (dvb->fe[1])
		dvb_unregister_frontend(dvb->fe[1]);
	dvb_unregister_frontend(dvb->fe[0]);
838
	if (dvb->fe[1] && !dvb->dont_attach_fe1)
839 840
		dvb_frontend_detach(dvb->fe[1]);
	dvb_frontend_detach(dvb->fe[0]);
841 842 843
	dvb_unregister_adapter(&dvb->adapter);
}

844
static int em28xx_dvb_init(struct em28xx *dev)
845
{
846
	int result = 0, mfe_shared = 0;
847 848
	struct em28xx_dvb *dvb;

849
	if (!dev->board.has_dvb) {
850
		/* This device does not support the extension */
851
		printk(KERN_INFO "em28xx_dvb: This device does not support the extension\n");
852 853 854
		return 0;
	}

855
	dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
856 857

	if (dvb == NULL) {
858
		em28xx_info("em28xx_dvb: memory allocation failed\n");
859 860 861
		return -ENOMEM;
	}
	dev->dvb = dvb;
862
	dvb->fe[0] = dvb->fe[1] = NULL;
863

864
	mutex_lock(&dev->lock);
865
	em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
866 867
	/* init frontend */
	switch (dev->model) {
868
	case EM2874_BOARD_LEADERSHIP_ISDBT:
869
		dvb->fe[0] = dvb_attach(s921_attach,
870 871
				&sharp_isdbt, &dev->i2c_adap);

872
		if (!dvb->fe[0]) {
873 874 875 876 877
			result = -EINVAL;
			goto out_free;
		}

		break;
878
	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
879
	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
880
	case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
881
	case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
882
		dvb->fe[0] = dvb_attach(lgdt330x_attach,
883 884
					   &em2880_lgdt3303_dev,
					   &dev->i2c_adap);
885
		if (em28xx_attach_xc3028(0x61, dev) < 0) {
886 887 888
			result = -EINVAL;
			goto out_free;
		}
889
		break;
890
	case EM2880_BOARD_KWORLD_DVB_310U:
891
		dvb->fe[0] = dvb_attach(zl10353_attach,
892 893
					   &em28xx_zl10353_with_xc3028,
					   &dev->i2c_adap);
894
		if (em28xx_attach_xc3028(0x61, dev) < 0) {
895 896 897
			result = -EINVAL;
			goto out_free;
		}
898
		break;
899
	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
900
	case EM2882_BOARD_TERRATEC_HYBRID_XS:
901
	case EM2880_BOARD_EMPIRE_DUAL_TV:
902
		dvb->fe[0] = dvb_attach(zl10353_attach,
903 904
					   &em28xx_zl10353_xc3028_no_i2c_gate,
					   &dev->i2c_adap);
905
		if (em28xx_attach_xc3028(0x61, dev) < 0) {
906 907 908 909
			result = -EINVAL;
			goto out_free;
		}
		break;
910
	case EM2880_BOARD_TERRATEC_HYBRID_XS:
911
	case EM2880_BOARD_TERRATEC_HYBRID_XS_FR:
912
	case EM2881_BOARD_PINNACLE_HYBRID_PRO:
913
	case EM2882_BOARD_DIKOM_DK300:
914
	case EM2882_BOARD_KWORLD_VS_DVBT:
915
		dvb->fe[0] = dvb_attach(zl10353_attach,
916
					   &em28xx_zl10353_xc3028_no_i2c_gate,
917
					   &dev->i2c_adap);
918
		if (dvb->fe[0] == NULL) {
919 920
			/* This board could have either a zl10353 or a mt352.
			   If the chip id isn't for zl10353, try mt352 */
921
			dvb->fe[0] = dvb_attach(mt352_attach,
922 923
						   &terratec_xs_mt352_cfg,
						   &dev->i2c_adap);
924
		}
925

926
		if (em28xx_attach_xc3028(0x61, dev) < 0) {
927 928 929 930
			result = -EINVAL;
			goto out_free;
		}
		break;
A
Aivar Päkk 已提交
931 932 933 934 935 936 937 938
	case EM2870_BOARD_KWORLD_355U:
		dvb->fe[0] = dvb_attach(zl10353_attach,
					   &em28xx_zl10353_no_i2c_gate_dev,
					   &dev->i2c_adap);
		if (dvb->fe[0] != NULL)
			dvb_attach(qt1010_attach, dvb->fe[0],
				   &dev->i2c_adap, &em28xx_qt1010_config);
		break;
939
	case EM2883_BOARD_KWORLD_HYBRID_330U:
940
	case EM2882_BOARD_EVGA_INDTUBE:
941
		dvb->fe[0] = dvb_attach(s5h1409_attach,
942 943
					   &em28xx_s5h1409_with_xc3028,
					   &dev->i2c_adap);
944
		if (em28xx_attach_xc3028(0x61, dev) < 0) {
945 946 947 948
			result = -EINVAL;
			goto out_free;
		}
		break;
949
	case EM2882_BOARD_KWORLD_ATSC_315U:
950
		dvb->fe[0] = dvb_attach(lgdt330x_attach,
951 952
					   &em2880_lgdt3303_dev,
					   &dev->i2c_adap);
953 954
		if (dvb->fe[0] != NULL) {
			if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
955 956 957 958 959 960
				&dev->i2c_adap, 0x61, TUNER_THOMSON_DTT761X)) {
				result = -EINVAL;
				goto out_free;
			}
		}
		break;
961
	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
962
	case EM2882_BOARD_PINNACLE_HYBRID_PRO_330E:
963
		dvb->fe[0] = dvb_attach(drxd_attach, &em28xx_drxd, NULL,
964
					   &dev->i2c_adap, &dev->udev->dev);
965
		if (em28xx_attach_xc3028(0x61, dev) < 0) {
966 967 968 969
			result = -EINVAL;
			goto out_free;
		}
		break;
970 971
	case EM2870_BOARD_REDDO_DVB_C_USB_BOX:
		/* Philips CU1216L NIM (Philips TDA10023 + Infineon TUA6034) */
972
		dvb->fe[0] = dvb_attach(tda10023_attach,
973 974
			&em28xx_tda10023_config,
			&dev->i2c_adap, 0x48);
975 976
		if (dvb->fe[0]) {
			if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
977 978 979 980 981 982
				&dev->i2c_adap, 0x60, TUNER_PHILIPS_CU1216L)) {
				result = -EINVAL;
				goto out_free;
			}
		}
		break;
983
	case EM2870_BOARD_KWORLD_A340:
984
		dvb->fe[0] = dvb_attach(lgdt3305_attach,
985 986
					   &em2870_lgdt3304_dev,
					   &dev->i2c_adap);
987 988
		if (dvb->fe[0] != NULL)
			dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
989 990
				   &dev->i2c_adap, &kworld_a340_config);
		break;
991
	case EM28174_BOARD_PCTV_290E:
992 993 994
		/* set default GPIO0 for LNA, used if GPIOLIB is undefined */
		dvb->lna_gpio = CXD2820R_GPIO_E | CXD2820R_GPIO_O |
				CXD2820R_GPIO_L;
995
		dvb->fe[0] = dvb_attach(cxd2820r_attach,
996
					&em28xx_cxd2820r_config,
997
					&dev->i2c_adap,
998
					&dvb->lna_gpio);
999 1000
		if (dvb->fe[0]) {
			/* FE 0 attach tuner */
1001 1002 1003 1004 1005 1006
			if (!dvb_attach(tda18271_attach,
					dvb->fe[0],
					0x60,
					&dev->i2c_adap,
					&em28xx_cxd2820r_tda18271_config)) {

1007 1008 1009 1010
				dvb_frontend_detach(dvb->fe[0]);
				result = -EINVAL;
				goto out_free;
			}
1011

1012
#ifdef CONFIG_GPIOLIB
1013 1014 1015 1016 1017 1018 1019 1020 1021 1022
			/* enable LNA for DVB-T, DVB-T2 and DVB-C */
			result = gpio_request_one(dvb->lna_gpio,
					GPIOF_OUT_INIT_LOW, NULL);
			if (result)
				em28xx_errdev("gpio request failed %d\n",
						result);
			else
				gpio_free(dvb->lna_gpio);

			result = 0; /* continue even set LNA fails */
1023
#endif
1024 1025 1026
			dvb->fe[0]->ops.set_lna = em28xx_pctv_290e_set_lna;
		}

1027 1028
		break;
	case EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C:
1029 1030
	{
		struct xc5000_config cfg;
1031 1032
		hauppauge_hvr930c_init(dev);

1033
		dvb->fe[0] = dvb_attach(drxk_attach,
1034
					&hauppauge_930c_drxk, &dev->i2c_adap);
1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047
		if (!dvb->fe[0]) {
			result = -EINVAL;
			goto out_free;
		}
		/* FIXME: do we need a pll semaphore? */
		dvb->fe[0]->sec_priv = dvb;
		sema_init(&dvb->pll_mutex, 1);
		dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
		dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;

		/* Attach xc5000 */
		memset(&cfg, 0, sizeof(cfg));
		cfg.i2c_address  = 0x61;
1048
		cfg.if_khz = 4000;
1049 1050 1051

		if (dvb->fe[0]->ops.i2c_gate_ctrl)
			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
1052 1053
		if (!dvb_attach(xc5000_attach, dvb->fe[0], &dev->i2c_adap,
				&cfg)) {
1054 1055 1056 1057 1058 1059
			result = -EINVAL;
			goto out_free;
		}
		if (dvb->fe[0]->ops.i2c_gate_ctrl)
			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);

1060
		break;
1061
	}
1062 1063 1064
	case EM2884_BOARD_TERRATEC_H5:
		terratec_h5_init(dev);

1065
		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_h5_drxk, &dev->i2c_adap);
1066
		if (!dvb->fe[0]) {
1067 1068 1069 1070 1071 1072 1073 1074 1075
			result = -EINVAL;
			goto out_free;
		}
		/* FIXME: do we need a pll semaphore? */
		dvb->fe[0]->sec_priv = dvb;
		sema_init(&dvb->pll_mutex, 1);
		dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
		dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;

1076
		/* Attach tda18271 to DVB-C frontend */
1077 1078 1079 1080 1081 1082 1083 1084
		if (dvb->fe[0]->ops.i2c_gate_ctrl)
			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
		if (!dvb_attach(tda18271c2dd_attach, dvb->fe[0], &dev->i2c_adap, 0x60)) {
			result = -EINVAL;
			goto out_free;
		}
		if (dvb->fe[0]->ops.i2c_gate_ctrl)
			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
1085

1086
		break;
1087 1088 1089 1090 1091 1092 1093 1094 1095 1096
	case EM28174_BOARD_PCTV_460E:
		/* attach demod */
		dvb->fe[0] = dvb_attach(tda10071_attach,
			&em28xx_tda10071_config, &dev->i2c_adap);

		/* attach SEC */
		if (dvb->fe[0])
			dvb_attach(a8293_attach, dvb->fe[0], &dev->i2c_adap,
				&em28xx_a8293_config);
		break;
1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118
	case EM2874_BOARD_MAXMEDIA_UB425_TC:
		/* attach demodulator */
		dvb->fe[0] = dvb_attach(drxk_attach, &maxmedia_ub425_tc_drxk,
				&dev->i2c_adap);

		if (dvb->fe[0]) {
			/* disable I2C-gate */
			dvb->fe[0]->ops.i2c_gate_ctrl = NULL;

			/* attach tuner */
			if (!dvb_attach(tda18271c2dd_attach, dvb->fe[0],
					&dev->i2c_adap, 0x60)) {
				dvb_frontend_detach(dvb->fe[0]);
				result = -EINVAL;
				goto out_free;
			}
		}

		/* TODO: we need drx-3913k firmware in order to support DVB-T */
		em28xx_info("MaxMedia UB425-TC: only DVB-C supported by that " \
				"driver version\n");

1119
		break;
1120 1121 1122 1123
	case EM2884_BOARD_PCTV_510E:
	case EM2884_BOARD_PCTV_520E:
		pctv_520e_init(dev);

1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137
		/* attach demodulator */
		dvb->fe[0] = dvb_attach(drxk_attach, &pctv_520e_drxk,
				&dev->i2c_adap);

		if (dvb->fe[0]) {
			/* attach tuner */
			if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
					&dev->i2c_adap,
					&em28xx_cxd2820r_tda18271_config)) {
				dvb_frontend_detach(dvb->fe[0]);
				result = -EINVAL;
				goto out_free;
			}
		}
1138
		break;
1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157
	case EM2884_BOARD_CINERGY_HTC_STICK:
		terratec_htc_stick_init(dev);

		/* attach demodulator */
		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_htc_stick_drxk,
					&dev->i2c_adap);
		if (!dvb->fe[0]) {
			result = -EINVAL;
			goto out_free;
		}

		/* Attach the demodulator. */
		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
				&dev->i2c_adap,
				&em28xx_cxd2820r_tda18271_config)) {
			result = -EINVAL;
			goto out_free;
		}
		break;
1158
	default:
1159 1160
		em28xx_errdev("/2: The frontend of your DVB/ATSC card"
				" isn't supported yet\n");
1161 1162
		break;
	}
1163
	if (NULL == dvb->fe[0]) {
1164
		em28xx_errdev("/2: frontend initialization failed\n");
1165 1166
		result = -EINVAL;
		goto out_free;
1167
	}
1168
	/* define general-purpose callback pointer */
1169
	dvb->fe[0]->callback = em28xx_tuner_callback;
1170
	if (dvb->fe[1])
1171
		dvb->fe[1]->callback = em28xx_tuner_callback;
1172 1173

	/* register everything */
1174
	result = em28xx_register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
1175

1176
	if (result < 0)
1177 1178
		goto out_free;

1179 1180 1181
	/* MFE lock */
	dvb->adapter.mfe_shared = mfe_shared;

1182
	em28xx_info("Successfully loaded em28xx-dvb\n");
1183 1184 1185 1186
ret:
	em28xx_set_mode(dev, EM28XX_SUSPEND);
	mutex_unlock(&dev->lock);
	return result;
1187 1188 1189 1190

out_free:
	kfree(dvb);
	dev->dvb = NULL;
1191
	goto ret;
1192 1193
}

1194 1195 1196 1197 1198 1199 1200
static inline void prevent_sleep(struct dvb_frontend_ops *ops)
{
	ops->set_voltage = NULL;
	ops->sleep = NULL;
	ops->tuner_ops.sleep = NULL;
}

1201
static int em28xx_dvb_fini(struct em28xx *dev)
1202
{
1203
	if (!dev->board.has_dvb) {
1204 1205 1206 1207
		/* This device does not support the extension */
		return 0;
	}

1208
	if (dev->dvb) {
1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221
		struct em28xx_dvb *dvb = dev->dvb;

		if (dev->state & DEV_DISCONNECTED) {
			/* We cannot tell the device to sleep
			 * once it has been unplugged. */
			if (dvb->fe[0])
				prevent_sleep(&dvb->fe[0]->ops);
			if (dvb->fe[1])
				prevent_sleep(&dvb->fe[1]->ops);
		}

		em28xx_unregister_dvb(dvb);
		kfree(dvb);
1222 1223
		dev->dvb = NULL;
	}
1224 1225 1226 1227 1228 1229 1230

	return 0;
}

static struct em28xx_ops dvb_ops = {
	.id   = EM28XX_DVB,
	.name = "Em28xx dvb Extension",
1231 1232
	.init = em28xx_dvb_init,
	.fini = em28xx_dvb_fini,
1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246
};

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);