- 根目录:
- drivers
- media
- usb
- em28xx
- em28xx-dvb.c
/*
DVB device driver for em28xx
(c) 2008-2011 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>
(c) 2012 Frank Schäfer <fschaefer.oss@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/slab.h>
#include <linux/usb.h>
#include "em28xx.h"
#include <media/v4l2-common.h>
#include <dvb_demux.h>
#include <dvb_net.h>
#include <dmxdev.h>
#include <media/tuner.h>
#include "tuner-simple.h"
#include <linux/gpio.h>
#include "lgdt330x.h"
#include "lgdt3305.h"
#include "zl10353.h"
#include "s5h1409.h"
#include "mt352.h"
#include "mt352_priv.h" /* FIXME */
#include "tda1002x.h"
#include "tda18271.h"
#include "s921.h"
#include "drxd.h"
#include "cxd2820r.h"
#include "tda18271c2dd.h"
#include "drxk.h"
#include "tda10071.h"
#include "a8293.h"
#include "qt1010.h"
#include "mb86a20s.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)
struct em28xx_dvb {
struct dvb_frontend *fe[2];
/* 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;
/* Due to DRX-K - probably need changes */
int (*gate_ctrl)(struct dvb_frontend *, int);
struct semaphore pll_mutex;
bool dont_attach_fe1;
int lna_gpio;
};
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 em28xx_dvb_urb_data_copy(struct em28xx *dev, struct urb *urb)
{
int xfer_bulk, num_packets, i;
if (!dev)
return 0;
if (dev->disconnected)
return 0;
if (urb->status < 0)
print_err_status(dev, -1, urb->status);
xfer_bulk = usb_pipebulk(urb->pipe);
if (xfer_bulk) /* bulk */
num_packets = 1;
else /* isoc */
num_packets = urb->number_of_packets;
for (i = 0; i < num_packets; i++) {
if (xfer_bulk) {
if (urb->status < 0) {
print_err_status(dev, i, urb->status);
if (urb->status != -EPROTO)
continue;
}
dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer,
urb->actual_length);
} else {
if (urb->iso_frame_desc[i].status < 0) {
print_err_status(dev, i,
urb->iso_frame_desc[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 em28xx_start_streaming(struct em28xx_dvb *dvb)
{
int rc;
struct em28xx_i2c_bus *i2c_bus = dvb->adapter.priv;
struct em28xx *dev = i2c_bus->dev;
int dvb_max_packet_size, packet_multiplier, dvb_alt;
if (dev->dvb_xfer_bulk) {
if (!dev->dvb_ep_bulk)
return -ENODEV;
dvb_max_packet_size = 512; /* USB 2.0 spec */
packet_multiplier = EM28XX_DVB_BULK_PACKET_MULTIPLIER;
dvb_alt = 0;
} else { /* isoc */
if (!dev->dvb_ep_isoc)
return -ENODEV;
dvb_max_packet_size = dev->dvb_max_pkt_size_isoc;
if (dvb_max_packet_size < 0)
return dvb_max_packet_size;
packet_multiplier = EM28XX_DVB_NUM_ISOC_PACKETS;
dvb_alt = dev->dvb_alt_isoc;
}
usb_set_interface(dev->udev, 0, dvb_alt);
rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
if (rc < 0)
return rc;
dprintk(1, "Using %d buffers each with %d x %d bytes\n",
EM28XX_DVB_NUM_BUFS,
packet_multiplier,
dvb_max_packet_size);
return em28xx_init_usb_xfer(dev, EM28XX_DIGITAL_MODE,
dev->dvb_xfer_bulk,
EM28XX_DVB_NUM_BUFS,
dvb_max_packet_size,
packet_multiplier,
em28xx_dvb_urb_data_copy);
}
static int em28xx_stop_streaming(struct em28xx_dvb *dvb)
{
struct em28xx_i2c_bus *i2c_bus = dvb->adapter.priv;
struct em28xx *dev = i2c_bus->dev;
em28xx_stop_urbs(dev);
return 0;
}
static int em28xx_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 = em28xx_start_streaming(dvb);
if (ret < 0)
rc = ret;
}
mutex_unlock(&dvb->lock);
return rc;
}
static int em28xx_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 = em28xx_stop_streaming(dvb);
mutex_unlock(&dvb->lock);
return err;
}
/* ------------------------------------------------------------------ */
static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
{
struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
struct em28xx *dev = i2c_bus->dev;
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 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,
};
static struct s921_config sharp_isdbt = {
.demod_address = 0x30 >> 1
};
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 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,
};
static struct zl10353_config em28xx_zl10353_xc3028_no_i2c_gate = {
.demod_address = (0x1e >> 1),
.no_tuner = 1,
.disable_i2c_gate_ctrl = 1,
.parallel_ts = 1,
.if2 = 45600,
};
static struct drxd_config em28xx_drxd = {
.demod_address = 0x70,
.demod_revision = 0xa2,
.pll_type = DRXD_PLL_NONE,
.clock = 12000,
.insert_rs_byte = 1,
.IF = 42800000,
.disable_i2c_gate_ctrl = 1,
};
static struct drxk_config terratec_h5_drxk = {
.adr = 0x29,
.single_master = 1,
.no_i2c_bridge = 1,
.microcode_name = "dvb-usb-terratec-h5-drxk.fw",
.qam_demod_parameter_count = 2,
.load_firmware_sync = true,
};
static struct drxk_config hauppauge_930c_drxk = {
.adr = 0x29,
.single_master = 1,
.no_i2c_bridge = 1,
.microcode_name = "dvb-usb-hauppauge-hvr930c-drxk.fw",
.chunk_size = 56,
.qam_demod_parameter_count = 2,
.load_firmware_sync = true,
};
static 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,
.qam_demod_parameter_count = 2,
/* Required for the antenna_gpio to disable LNA. */
.antenna_dvbt = true,
/* The windows driver uses the same. This will disable LNA. */
.antenna_gpio = 0x6,
.load_firmware_sync = true,
};
static struct drxk_config maxmedia_ub425_tc_drxk = {
.adr = 0x29,
.single_master = 1,
.no_i2c_bridge = 1,
.load_firmware_sync = true,
};
static struct drxk_config pctv_520e_drxk = {
.adr = 0x29,
.single_master = 1,
.microcode_name = "dvb-demod-drxk-pctv.fw",
.qam_demod_parameter_count = 2,
.chunk_size = 58,
.antenna_dvbt = true, /* disable LNA */
.antenna_gpio = (1 << 2), /* disable LNA */
.load_firmware_sync = true,
};
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;
}
static void hauppauge_hvr930c_init(struct em28xx *dev)
{
int i;
struct em28xx_reg_seq hauppauge_hvr930c_init[] = {
{EM2874_R80_GPIO, 0xff, 0xff, 0x65},
{EM2874_R80_GPIO, 0xfb, 0xff, 0x32},
{EM2874_R80_GPIO, 0xff, 0xff, 0xb8},
{ -1, -1, -1, -1},
};
struct em28xx_reg_seq hauppauge_hvr930c_end[] = {
{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},
{ -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[dev->def_i2c_bus].addr = 0x82 >> 1;
for (i = 0; i < ARRAY_SIZE(regs); i++)
i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], 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);
}
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[dev->def_i2c_bus].addr = 0x82 >> 1;
for (i = 0; i < ARRAY_SIZE(regs); i++)
i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], regs[i].r, regs[i].len);
em28xx_gpio_set(dev, terratec_h5_end);
};
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 (not yet supported), but
* it's probably still a good idea.
*/
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[dev->def_i2c_bus].addr = 0x82 >> 1;
for (i = 0; i < ARRAY_SIZE(regs); i++)
i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], regs[i].r, regs[i].len);
em28xx_gpio_set(dev, terratec_htc_stick_end);
};
static void terratec_htc_usb_xs_init(struct em28xx *dev)
{
int i;
struct em28xx_reg_seq terratec_htc_usb_xs_init[] = {
{EM28XX_R08_GPIO, 0xff, 0xff, 10},
{EM2874_R80_GPIO, 0xb2, 0xff, 100},
{EM2874_R80_GPIO, 0xb2, 0xff, 50},
{EM2874_R80_GPIO, 0xb6, 0xff, 100},
{ -1, -1, -1, -1},
};
struct em28xx_reg_seq terratec_htc_usb_xs_end[] = {
{EM2874_R80_GPIO, 0xa6, 0xff, 100},
{EM2874_R80_GPIO, 0xa6, 0xff, 50},
{EM2874_R80_GPIO, 0xe6, 0xff, 100},
{ -1, -1, -1, -1},
};
/*
* Init the analog decoder (not yet supported), but
* it's probably still a good idea.
*/
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_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
em28xx_gpio_set(dev, terratec_htc_usb_xs_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[dev->def_i2c_bus].addr = 0x82 >> 1;
for (i = 0; i < ARRAY_SIZE(regs); i++)
i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], regs[i].r, regs[i].len);
em28xx_gpio_set(dev, terratec_htc_usb_xs_end);
};
static void pctv_520e_init(struct em28xx *dev)
{
/*
* Init AVF4910B analog decoder. Looks like I2C traffic to
* digital demodulator and tuner are routed via AVF4910B.
*/
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[dev->def_i2c_bus].addr = 0x82 >> 1; /* 0x41 */
for (i = 0; i < ARRAY_SIZE(regs); i++)
i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], regs[i].r, regs[i].len);
};
static int em28xx_pctv_290e_set_lna(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct em28xx *dev = fe->dvb->priv;
#ifdef CONFIG_GPIOLIB
struct em28xx_dvb *dvb = dev->dvb;
int ret;
unsigned long flags;
if (c->lna == 1)
flags = GPIOF_OUT_INIT_HIGH; /* enable LNA */
else
flags = GPIOF_OUT_INIT_LOW; /* disable LNA */
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
dev_warn(&dev->udev->dev, "%s: LNA control is disabled (lna=%u)\n",
KBUILD_MODNAME, c->lna);
return 0;
#endif
}
static int em28xx_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 = em28xx_mt352_terratec_xs_init,
};
static struct tda10023_config em28xx_tda10023_config = {
.demod_address = 0x0c,
.invert = 1,
};
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,
.gate = TDA18271_GATE_DIGITAL,
};
static const struct tda10071_config em28xx_tda10071_config = {
.demod_i2c_addr = 0x55, /* (0xaa >> 1) */
.tuner_i2c_addr = 0x14,
.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) */
};
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
};
static const struct mb86a20s_config c3tech_duo_mb86a20s_config = {
.demod_address = 0x10,
.is_serial = true,
};
static struct tda18271_std_map mb86a20s_tda18271_config = {
.dvbt_6 = { .if_freq = 4000, .agc_mode = 3, .std = 4,
.if_lvl = 1, .rfagc_top = 0x37, },
};
static struct tda18271_config c3tech_duo_tda18271_config = {
.std_map = &mb86a20s_tda18271_config,
.gate = TDA18271_GATE_DIGITAL,
.small_i2c = TDA18271_03_BYTE_CHUNK_INIT,
};
/* ------------------------------------------------------------------ */
static int em28xx_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[dev->def_i2c_bus];
cfg.i2c_addr = addr;
if (!dev->dvb->fe[0]) {
em28xx_errdev("/2: dvb frontend not attached. "
"Can't attach xc3028\n");
return -EINVAL;
}
fe = dvb_attach(xc2028_attach, dev->dvb->fe[0], &cfg);
if (!fe) {
em28xx_errdev("/2: xc3028 attach failed\n");
dvb_frontend_detach(dev->dvb->fe[0]);
dev->dvb->fe[0] = NULL;
return -EINVAL;
}
em28xx_info("%s/2: xc3028 attached\n", dev->name);
return 0;
}
/* ------------------------------------------------------------------ */
static int em28xx_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->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;
dvb->adapter.priv = &dev->i2c_bus[dev->def_i2c_bus];
/* register frontend */
result = dvb_register_frontend(&dvb->adapter, dvb->fe[0]);
if (result < 0) {
printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
dev->name, result);
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;
}
}
/* 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 = em28xx_start_feed;
dvb->demux.stop_feed = em28xx_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:
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]);
dvb_unregister_adapter(&dvb->adapter);
fail_adapter:
return result;
}
static void em28xx_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);
if (dvb->fe[1])
dvb_unregister_frontend(dvb->fe[1]);
dvb_unregister_frontend(dvb->fe[0]);
if (dvb->fe[1] && !dvb->dont_attach_fe1)
dvb_frontend_detach(dvb->fe[1]);
dvb_frontend_detach(dvb->fe[0]);
dvb_unregister_adapter(&dvb->adapter);
}
static int em28xx_dvb_init(struct em28xx *dev)
{
int result = 0, mfe_shared = 0;
struct em28xx_dvb *dvb;
if (!dev->board.has_dvb) {
/* This device does not support the extension */
printk(KERN_INFO "em28xx_dvb: This device does not support the extension\n");
return 0;
}
dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
if (dvb == NULL) {
em28xx_info("em28xx_dvb: memory allocation failed\n");
return -ENOMEM;
}
dev->dvb = dvb;
dvb->fe[0] = dvb->fe[1] = NULL;
mutex_lock(&dev->lock);
em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
/* init frontend */
switch (dev->model) {
case EM2874_BOARD_LEADERSHIP_ISDBT:
dvb->fe[0] = dvb_attach(s921_attach,
&sharp_isdbt, &dev->i2c_adap[dev->def_i2c_bus]);
if (!dvb->fe[0]) {
result = -EINVAL;
goto out_free;
}
break;
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->fe[0] = dvb_attach(lgdt330x_attach,
&em2880_lgdt3303_dev,
&dev->i2c_adap[dev->def_i2c_bus]);
if (em28xx_attach_xc3028(0x61, dev) < 0) {
result = -EINVAL;
goto out_free;
}
break;
case EM2880_BOARD_KWORLD_DVB_310U:
dvb->fe[0] = dvb_attach(zl10353_attach,
&em28xx_zl10353_with_xc3028,
&dev->i2c_adap[dev->def_i2c_bus]);
if (em28xx_attach_xc3028(0x61, dev) < 0) {
result = -EINVAL;
goto out_free;
}
break;
case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
case EM2882_BOARD_TERRATEC_HYBRID_XS:
case EM2880_BOARD_EMPIRE_DUAL_TV:
dvb->fe[0] = dvb_attach(zl10353_attach,
&em28xx_zl10353_xc3028_no_i2c_gate,
&dev->i2c_adap[dev->def_i2c_bus]);
if (em28xx_attach_xc3028(0x61, dev) < 0) {
result = -EINVAL;
goto out_free;
}
break;
case EM2880_BOARD_TERRATEC_HYBRID_XS:
case EM2880_BOARD_TERRATEC_HYBRID_XS_FR:
case EM2881_BOARD_PINNACLE_HYBRID_PRO:
case EM2882_BOARD_DIKOM_DK300:
case EM2882_BOARD_KWORLD_VS_DVBT:
dvb->fe[0] = dvb_attach(zl10353_attach,
&em28xx_zl10353_xc3028_no_i2c_gate,
&dev->i2c_adap[dev->def_i2c_bus]);
if (dvb->fe[0] == NULL) {
/* This board could have either a zl10353 or a mt352.
If the chip id isn't for zl10353, try mt352 */
dvb->fe[0] = dvb_attach(mt352_attach,
&terratec_xs_mt352_cfg,
&dev->i2c_adap[dev->def_i2c_bus]);
}
if (em28xx_attach_xc3028(0x61, dev) < 0) {
result = -EINVAL;
goto out_free;
}
break;
case EM2870_BOARD_KWORLD_355U:
dvb->fe[0] = dvb_attach(zl10353_attach,
&em28xx_zl10353_no_i2c_gate_dev,
&dev->i2c_adap[dev->def_i2c_bus]);
if (dvb->fe[0] != NULL)
dvb_attach(qt1010_attach, dvb->fe[0],
&dev->i2c_adap[dev->def_i2c_bus], &em28xx_qt1010_config);
break;
case EM2883_BOARD_KWORLD_HYBRID_330U:
case EM2882_BOARD_EVGA_INDTUBE:
dvb->fe[0] = dvb_attach(s5h1409_attach,
&em28xx_s5h1409_with_xc3028,
&dev->i2c_adap[dev->def_i2c_bus]);
if (em28xx_attach_xc3028(0x61, dev) < 0) {
result = -EINVAL;
goto out_free;
}
break;
case EM2882_BOARD_KWORLD_ATSC_315U:
dvb->fe[0] = dvb_attach(lgdt330x_attach,
&em2880_lgdt3303_dev,
&dev->i2c_adap[dev->def_i2c_bus]);
if (dvb->fe[0] != NULL) {
if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
&dev->i2c_adap[dev->def_i2c_bus], 0x61, TUNER_THOMSON_DTT761X)) {
result = -EINVAL;
goto out_free;
}
}
break;
case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
case EM2882_BOARD_PINNACLE_HYBRID_PRO_330E:
dvb->fe[0] = dvb_attach(drxd_attach, &em28xx_drxd, NULL,
&dev->i2c_adap[dev->def_i2c_bus], &dev->udev->dev);
if (em28xx_attach_xc3028(0x61, dev) < 0) {
result = -EINVAL;
goto out_free;
}
break;
case EM2870_BOARD_REDDO_DVB_C_USB_BOX:
/* Philips CU1216L NIM (Philips TDA10023 + Infineon TUA6034) */
dvb->fe[0] = dvb_attach(tda10023_attach,
&em28xx_tda10023_config,
&dev->i2c_adap[dev->def_i2c_bus], 0x48);
if (dvb->fe[0]) {
if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
&dev->i2c_adap[dev->def_i2c_bus], 0x60, TUNER_PHILIPS_CU1216L)) {
result = -EINVAL;
goto out_free;
}
}
break;
case EM2870_BOARD_KWORLD_A340:
dvb->fe[0] = dvb_attach(lgdt3305_attach,
&em2870_lgdt3304_dev,
&dev->i2c_adap[dev->def_i2c_bus]);
if (dvb->fe[0] != NULL)
dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
&dev->i2c_adap[dev->def_i2c_bus], &kworld_a340_config);
break;
case EM28174_BOARD_PCTV_290E:
/* set default GPIO0 for LNA, used if GPIOLIB is undefined */
dvb->lna_gpio = CXD2820R_GPIO_E | CXD2820R_GPIO_O |
CXD2820R_GPIO_L;
dvb->fe[0] = dvb_attach(cxd2820r_attach,
&em28xx_cxd2820r_config,
&dev->i2c_adap[dev->def_i2c_bus],
&dvb->lna_gpio);
if (dvb->fe[0]) {
/* FE 0 attach tuner */
if (!dvb_attach(tda18271_attach,
dvb->fe[0],
0x60,
&dev->i2c_adap[dev->def_i2c_bus],
&em28xx_cxd2820r_tda18271_config)) {
dvb_frontend_detach(dvb->fe[0]);
result = -EINVAL;
goto out_free;
}
#ifdef CONFIG_GPIOLIB
/* 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 */
#endif
dvb->fe[0]->ops.set_lna = em28xx_pctv_290e_set_lna;
}
break;
case EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C:
{
struct xc5000_config cfg;
hauppauge_hvr930c_init(dev);
dvb->fe[0] = dvb_attach(drxk_attach,
&hauppauge_930c_drxk, &dev->i2c_adap[dev->def_i2c_bus]);
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;
cfg.if_khz = 4000;
if (dvb->fe[0]->ops.i2c_gate_ctrl)
dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
if (!dvb_attach(xc5000_attach, dvb->fe[0], &dev->i2c_adap[dev->def_i2c_bus],
&cfg)) {
result = -EINVAL;
goto out_free;
}
if (dvb->fe[0]->ops.i2c_gate_ctrl)
dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
break;
}
case EM2884_BOARD_TERRATEC_H5:
terratec_h5_init(dev);
dvb->fe[0] = dvb_attach(drxk_attach, &terratec_h5_drxk, &dev->i2c_adap[dev->def_i2c_bus]);
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 tda18271 to DVB-C frontend */
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[dev->def_i2c_bus], 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);
break;
case EM2884_BOARD_C3TECH_DIGITAL_DUO:
dvb->fe[0] = dvb_attach(mb86a20s_attach,
&c3tech_duo_mb86a20s_config,
&dev->i2c_adap[dev->def_i2c_bus]);
if (dvb->fe[0] != NULL)
dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
&dev->i2c_adap[dev->def_i2c_bus],
&c3tech_duo_tda18271_config);
break;
case EM28174_BOARD_PCTV_460E:
/* attach demod */
dvb->fe[0] = dvb_attach(tda10071_attach,
&em28xx_tda10071_config, &dev->i2c_adap[dev->def_i2c_bus]);
/* attach SEC */
if (dvb->fe[0])
dvb_attach(a8293_attach, dvb->fe[0], &dev->i2c_adap[dev->def_i2c_bus],
&em28xx_a8293_config);
break;
case EM2874_BOARD_MAXMEDIA_UB425_TC:
/* attach demodulator */
dvb->fe[0] = dvb_attach(drxk_attach, &maxmedia_ub425_tc_drxk,
&dev->i2c_adap[dev->def_i2c_bus]);
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[dev->def_i2c_bus], 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");
break;
case EM2884_BOARD_PCTV_510E:
case EM2884_BOARD_PCTV_520E:
pctv_520e_init(dev);
/* attach demodulator */
dvb->fe[0] = dvb_attach(drxk_attach, &pctv_520e_drxk,
&dev->i2c_adap[dev->def_i2c_bus]);
if (dvb->fe[0]) {
/* attach tuner */
if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
&dev->i2c_adap[dev->def_i2c_bus],
&em28xx_cxd2820r_tda18271_config)) {
dvb_frontend_detach(dvb->fe[0]);
result = -EINVAL;
goto out_free;
}
}
break;
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[dev->def_i2c_bus]);
if (!dvb->fe[0]) {
result = -EINVAL;
goto out_free;
}
/* Attach the demodulator. */
if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
&dev->i2c_adap[dev->def_i2c_bus],
&em28xx_cxd2820r_tda18271_config)) {
result = -EINVAL;
goto out_free;
}
break;
case EM2884_BOARD_TERRATEC_HTC_USB_XS:
terratec_htc_usb_xs_init(dev);
/* attach demodulator */
dvb->fe[0] = dvb_attach(drxk_attach, &terratec_htc_stick_drxk,
&dev->i2c_adap[dev->def_i2c_bus]);
if (!dvb->fe[0]) {
result = -EINVAL;
goto out_free;
}
/* Attach the demodulator. */
if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
&dev->i2c_adap[dev->def_i2c_bus],
&em28xx_cxd2820r_tda18271_config)) {
result = -EINVAL;
goto out_free;
}
break;
default:
em28xx_errdev("/2: The frontend of your DVB/ATSC card"
" isn't supported yet\n");
break;
}
if (NULL == dvb->fe[0]) {
em28xx_errdev("/2: frontend initialization failed\n");
result = -EINVAL;
goto out_free;
}
/* define general-purpose callback pointer */
dvb->fe[0]->callback = em28xx_tuner_callback;
if (dvb->fe[1])
dvb->fe[1]->callback = em28xx_tuner_callback;
/* register everything */
result = em28xx_register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
if (result < 0)
goto out_free;
/* MFE lock */
dvb->adapter.mfe_shared = mfe_shared;
em28xx_info("Successfully loaded em28xx-dvb\n");
ret:
em28xx_set_mode(dev, EM28XX_SUSPEND);
mutex_unlock(&dev->lock);
return result;
out_free:
kfree(dvb);
dev->dvb = NULL;
goto ret;
}
static inline void prevent_sleep(struct dvb_frontend_ops *ops)
{
ops->set_voltage = NULL;
ops->sleep = NULL;
ops->tuner_ops.sleep = NULL;
}
static int em28xx_dvb_fini(struct em28xx *dev)
{
if (!dev->board.has_dvb) {
/* This device does not support the extension */
return 0;
}
if (dev->dvb) {
struct em28xx_dvb *dvb = dev->dvb;
if (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);
dev->dvb = NULL;
}
return 0;
}
static struct em28xx_ops dvb_ops = {
.id = EM28XX_DVB,
.name = "Em28xx dvb Extension",
.init = em28xx_dvb_init,
.fini = em28xx_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);