/*
* Linux driver for Technisat DVB-S/S2 USB 2.0 device
*
* Copyright (C) 2010 Patrick Boettcher,
* Kernel Labs Inc. PO Box 745, St James, NY 11780
*
* Development was sponsored by Technisat Digital UK Limited, whose
* registered office is Witan Gate House 500 - 600 Witan Gate West,
* Milton Keynes, MK9 1SH
*
* 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, or (at your option) any later version.
*
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* THIS PROGRAM IS PROVIDED "AS IS" AND BOTH THE COPYRIGHT HOLDER AND
* TECHNISAT DIGITAL UK LTD DISCLAIM ALL WARRANTIES WITH REGARD TO
* THIS PROGRAM INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR
* FITNESS FOR A PARTICULAR PURPOSE. NEITHER THE COPYRIGHT HOLDER
* NOR TECHNISAT DIGITAL UK LIMITED SHALL BE LIABLE FOR ANY SPECIAL,
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS PROGRAM. See the
* GNU General Public License for more details.
*/
#define DVB_USB_LOG_PREFIX "technisat-usb2"
#include "dvb-usb.h"
#include "stv6110x.h"
#include "stv090x.h"
/* module parameters */
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug,
"set debugging level (bit-mask: 1=info,2=eeprom,4=i2c,8=rc)." \
DVB_USB_DEBUG_STATUS);
/* disables all LED control command and
* also does not start the signal polling thread */
static int disable_led_control;
module_param(disable_led_control, int, 0444);
MODULE_PARM_DESC(disable_led_control,
"disable LED control of the device "
"(default: 0 - LED control is active).");
/* device private data */
struct technisat_usb2_state {
struct dvb_usb_device *dev;
struct delayed_work green_led_work;
u8 power_state;
u16 last_scan_code;
};
/* debug print helpers */
#define deb_info(args...) dprintk(debug, 0x01, args)
#define deb_eeprom(args...) dprintk(debug, 0x02, args)
#define deb_i2c(args...) dprintk(debug, 0x04, args)
#define deb_rc(args...) dprintk(debug, 0x08, args)
/* vendor requests */
#define SET_IFCLK_TO_EXTERNAL_TSCLK_VENDOR_REQUEST 0xB3
#define SET_FRONT_END_RESET_VENDOR_REQUEST 0xB4
#define GET_VERSION_INFO_VENDOR_REQUEST 0xB5
#define SET_GREEN_LED_VENDOR_REQUEST 0xB6
#define SET_RED_LED_VENDOR_REQUEST 0xB7
#define GET_IR_DATA_VENDOR_REQUEST 0xB8
#define SET_LED_TIMER_DIVIDER_VENDOR_REQUEST 0xB9
#define SET_USB_REENUMERATION 0xBA
/* i2c-access methods */
#define I2C_SPEED_100KHZ_BIT 0x40
#define I2C_STATUS_NAK 7
#define I2C_STATUS_OK 8
static int technisat_usb2_i2c_access(struct usb_device *udev,
u8 device_addr, u8 *tx, u8 txlen, u8 *rx, u8 rxlen)
{
u8 b[64];
int ret, actual_length;
deb_i2c("i2c-access: %02x, tx: ", device_addr);
debug_dump(tx, txlen, deb_i2c);
deb_i2c(" ");
if (txlen > 62) {
err("i2c TX buffer can't exceed 62 bytes (dev 0x%02x)",
device_addr);
txlen = 62;
}
if (rxlen > 62) {
err("i2c RX buffer can't exceed 62 bytes (dev 0x%02x)",
device_addr);
txlen = 62;
}
b[0] = I2C_SPEED_100KHZ_BIT;
b[1] = device_addr << 1;
if (rx != NULL) {
b[0] |= rxlen;
b[1] |= 1;
}
memcpy(&b[2], tx, txlen);
ret = usb_bulk_msg(udev,
usb_sndbulkpipe(udev, 0x01),
b, 2 + txlen,
NULL, 1000);
if (ret < 0) {
err("i2c-error: out failed %02x = %d", device_addr, ret);
return -ENODEV;
}
ret = usb_bulk_msg(udev,
usb_rcvbulkpipe(udev, 0x01),
b, 64, &actual_length, 1000);
if (ret < 0) {
err("i2c-error: in failed %02x = %d", device_addr, ret);
return -ENODEV;
}
if (b[0] != I2C_STATUS_OK) {
err("i2c-error: %02x = %d", device_addr, b[0]);
/* handle tuner-i2c-nak */
if (!(b[0] == I2C_STATUS_NAK &&
device_addr == 0x60
/* && device_is_technisat_usb2 */))
return -ENODEV;
}
deb_i2c("status: %d, ", b[0]);
if (rx != NULL) {
memcpy(rx, &b[2], rxlen);
deb_i2c("rx (%d): ", rxlen);
debug_dump(rx, rxlen, deb_i2c);
}
deb_i2c("\n");
return 0;
}
static int technisat_usb2_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
int num)
{
int ret = 0, i;
struct dvb_usb_device *d = i2c_get_adapdata(adap);
/* Ensure nobody else hits the i2c bus while we're sending our
sequence of messages, (such as the remote control thread) */
if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
return -EAGAIN;
for (i = 0; i < num; i++) {
if (i+1 < num && msg[i+1].flags & I2C_M_RD) {
ret = technisat_usb2_i2c_access(d->udev, msg[i+1].addr,
msg[i].buf, msg[i].len,
msg[i+1].buf, msg[i+1].len);
if (ret != 0)
break;
i++;
} else {
ret = technisat_usb2_i2c_access(d->udev, msg[i].addr,
msg[i].buf, msg[i].len,
NULL, 0);
if (ret != 0)
break;
}
}
if (ret == 0)
ret = i;
mutex_unlock(&d->i2c_mutex);
return ret;
}
static u32 technisat_usb2_i2c_func(struct i2c_adapter *adapter)
{
return I2C_FUNC_I2C;
}
static struct i2c_algorithm technisat_usb2_i2c_algo = {
.master_xfer = technisat_usb2_i2c_xfer,
.functionality = technisat_usb2_i2c_func,
};
#if 0
static void technisat_usb2_frontend_reset(struct usb_device *udev)
{
usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
SET_FRONT_END_RESET_VENDOR_REQUEST,
USB_TYPE_VENDOR | USB_DIR_OUT,
10, 0,
NULL, 0, 500);
}
#endif
/* LED control */
enum technisat_usb2_led_state {
LED_OFF,
LED_BLINK,
LED_ON,
LED_UNDEFINED
};
static int technisat_usb2_set_led(struct dvb_usb_device *d, int red, enum technisat_usb2_led_state state)
{
int ret;
u8 led[8] = {
red ? SET_RED_LED_VENDOR_REQUEST : SET_GREEN_LED_VENDOR_REQUEST,
0
};
if (disable_led_control && state != LED_OFF)
return 0;
switch (state) {
case LED_ON:
led[1] = 0x82;
break;
case LED_BLINK:
led[1] = 0x82;
if (red) {
led[2] = 0x02;
led[3] = 10;
led[4] = 10;
} else {
led[2] = 0xff;
led[3] = 50;
led[4] = 50;
}
led[5] = 1;
break;
default:
case LED_OFF:
led[1] = 0x80;
break;
}
if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
return -EAGAIN;
ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
red ? SET_RED_LED_VENDOR_REQUEST : SET_GREEN_LED_VENDOR_REQUEST,
USB_TYPE_VENDOR | USB_DIR_OUT,
0, 0,
led, sizeof(led), 500);
mutex_unlock(&d->i2c_mutex);
return ret;
}
static int technisat_usb2_set_led_timer(struct dvb_usb_device *d, u8 red, u8 green)
{
int ret;
u8 b = 0;
if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
return -EAGAIN;
ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
SET_LED_TIMER_DIVIDER_VENDOR_REQUEST,
USB_TYPE_VENDOR | USB_DIR_OUT,
(red << 8) | green, 0,
&b, 1, 500);
mutex_unlock(&d->i2c_mutex);
return ret;
}
static void technisat_usb2_green_led_control(struct work_struct *work)
{
struct technisat_usb2_state *state =
container_of(work, struct technisat_usb2_state, green_led_work.work);
struct dvb_frontend *fe = state->dev->adapter[0].fe_adap[0].fe;
if (state->power_state == 0)
goto schedule;
if (fe != NULL) {
enum fe_status status;
if (fe->ops.read_status(fe, &status) != 0)
goto schedule;
if (status & FE_HAS_LOCK) {
u32 ber;
if (fe->ops.read_ber(fe, &ber) != 0)
goto schedule;
if (ber > 1000)
technisat_usb2_set_led(state->dev, 0, LED_BLINK);
else
technisat_usb2_set_led(state->dev, 0, LED_ON);
} else
technisat_usb2_set_led(state->dev, 0, LED_OFF);
}
schedule:
schedule_delayed_work(&state->green_led_work,
msecs_to_jiffies(500));
}
/* method to find out whether the firmware has to be downloaded or not */
static int technisat_usb2_identify_state(struct usb_device *udev,
struct dvb_usb_device_properties *props,
struct dvb_usb_device_description **desc, int *cold)
{
int ret;
u8 version[3];
/* first select the interface */
if (usb_set_interface(udev, 0, 1) != 0)
err("could not set alternate setting to 0");
else
info("set alternate setting");
*cold = 0; /* by default do not download a firmware - just in case something is wrong */
ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
GET_VERSION_INFO_VENDOR_REQUEST,
USB_TYPE_VENDOR | USB_DIR_IN,
0, 0,
version, sizeof(version), 500);
if (ret < 0)
*cold = 1;
else {
info("firmware version: %d.%d", version[1], version[2]);
*cold = 0;
}
return 0;
}
/* power control */
static int technisat_usb2_power_ctrl(struct dvb_usb_device *d, int level)
{
struct technisat_usb2_state *state = d->priv;
state->power_state = level;
if (disable_led_control)
return 0;
/* green led is turned off in any case - will be turned on when tuning */
technisat_usb2_set_led(d, 0, LED_OFF);
/* red led is turned on all the time */
technisat_usb2_set_led(d, 1, LED_ON);
return 0;
}
/* mac address reading - from the eeprom */
#if 0
static void technisat_usb2_eeprom_dump(struct dvb_usb_device *d)
{
u8 reg;
u8 b[16];
int i, j;
/* full EEPROM dump */
for (j = 0; j < 256 * 4; j += 16) {
reg = j;
if (technisat_usb2_i2c_access(d->udev, 0x50 + j / 256, ®, 1, b, 16) != 0)
break;
deb_eeprom("EEPROM: %01x%02x: ", j / 256, reg);
for (i = 0; i < 16; i++)
deb_eeprom("%02x ", b[i]);
deb_eeprom("\n");
}
}
#endif
static u8 technisat_usb2_calc_lrc(const u8 *b, u16 length)
{
u8 lrc = 0;
while (--length)
lrc ^= *b++;
return lrc;
}
static int technisat_usb2_eeprom_lrc_read(struct dvb_usb_device *d,
u16 offset, u8 *b, u16 length, u8 tries)
{
u8 bo = offset & 0xff;
struct i2c_msg msg[] = {
{
.addr = 0x50 | ((offset >> 8) & 0x3),
.buf = &bo,
.len = 1
}, {
.addr = 0x50 | ((offset >> 8) & 0x3),
.flags = I2C_M_RD,
.buf = b,
.len = length
}
};
while (tries--) {
int status;
if (i2c_transfer(&d->i2c_adap, msg, 2) != 2)
break;
status =
technisat_usb2_calc_lrc(b, length - 1) == b[length - 1];
if (status)
return 0;
}
return -EREMOTEIO;
}
#define EEPROM_MAC_START 0x3f8
#define EEPROM_MAC_TOTAL 8
static int technisat_usb2_read_mac_address(struct dvb_usb_device *d,
u8 mac[])
{
u8 buf[EEPROM_MAC_TOTAL];
if (technisat_usb2_eeprom_lrc_read(d, EEPROM_MAC_START,
buf, EEPROM_MAC_TOTAL, 4) != 0)
return -ENODEV;
memcpy(mac, buf, 6);
return 0;
}
/* frontend attach */
static int technisat_usb2_set_voltage(struct dvb_frontend *fe,
fe_sec_voltage_t voltage)
{
int i;
u8 gpio[3] = { 0 }; /* 0 = 2, 1 = 3, 2 = 4 */
gpio[2] = 1; /* high - voltage ? */
switch (voltage) {
case SEC_VOLTAGE_13:
gpio[0] = 1;
break;
case SEC_VOLTAGE_18:
gpio[0] = 1;
gpio[1] = 1;
break;
default:
case SEC_VOLTAGE_OFF:
break;
}
for (i = 0; i < 3; i++)
if (stv090x_set_gpio(fe, i+2, 0, gpio[i], 0) != 0)
return -EREMOTEIO;
return 0;
}
static struct stv090x_config technisat_usb2_stv090x_config = {
.device = STV0903,
.demod_mode = STV090x_SINGLE,
.clk_mode = STV090x_CLK_EXT,
.xtal = 8000000,
.address = 0x68,
.ts1_mode = STV090x_TSMODE_DVBCI,
.ts1_clk = 13400000,
.ts1_tei = 1,
.repeater_level = STV090x_RPTLEVEL_64,
.tuner_bbgain = 6,
};
static struct stv6110x_config technisat_usb2_stv6110x_config = {
.addr = 0x60,
.refclk = 16000000,
.clk_div = 2,
};
static int technisat_usb2_frontend_attach(struct dvb_usb_adapter *a)
{
struct usb_device *udev = a->dev->udev;
int ret;
a->fe_adap[0].fe = dvb_attach(stv090x_attach, &technisat_usb2_stv090x_config,
&a->dev->i2c_adap, STV090x_DEMODULATOR_0);
if (a->fe_adap[0].fe) {
struct stv6110x_devctl *ctl;
ctl = dvb_attach(stv6110x_attach,
a->fe_adap[0].fe,
&technisat_usb2_stv6110x_config,
&a->dev->i2c_adap);
if (ctl) {
technisat_usb2_stv090x_config.tuner_init = ctl->tuner_init;
technisat_usb2_stv090x_config.tuner_sleep = ctl->tuner_sleep;
technisat_usb2_stv090x_config.tuner_set_mode = ctl->tuner_set_mode;
technisat_usb2_stv090x_config.tuner_set_frequency = ctl->tuner_set_frequency;
technisat_usb2_stv090x_config.tuner_get_frequency = ctl->tuner_get_frequency;
technisat_usb2_stv090x_config.tuner_set_bandwidth = ctl->tuner_set_bandwidth;
technisat_usb2_stv090x_config.tuner_get_bandwidth = ctl->tuner_get_bandwidth;
technisat_usb2_stv090x_config.tuner_set_bbgain = ctl->tuner_set_bbgain;
technisat_usb2_stv090x_config.tuner_get_bbgain = ctl->tuner_get_bbgain;
technisat_usb2_stv090x_config.tuner_set_refclk = ctl->tuner_set_refclk;
technisat_usb2_stv090x_config.tuner_get_status = ctl->tuner_get_status;
/* call the init function once to initialize
tuner's clock output divider and demod's
master clock */
if (a->fe_adap[0].fe->ops.init)
a->fe_adap[0].fe->ops.init(a->fe_adap[0].fe);
if (mutex_lock_interruptible(&a->dev->i2c_mutex) < 0)
return -EAGAIN;
ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
SET_IFCLK_TO_EXTERNAL_TSCLK_VENDOR_REQUEST,
USB_TYPE_VENDOR | USB_DIR_OUT,
0, 0,
NULL, 0, 500);
mutex_unlock(&a->dev->i2c_mutex);
if (ret != 0)
err("could not set IF_CLK to external");
a->fe_adap[0].fe->ops.set_voltage = technisat_usb2_set_voltage;
/* if everything was successful assign a nice name to the frontend */
strlcpy(a->fe_adap[0].fe->ops.info.name, a->dev->desc->name,
sizeof(a->fe_adap[0].fe->ops.info.name));
} else {
dvb_frontend_detach(a->fe_adap[0].fe);
a->fe_adap[0].fe = NULL;
}
}
technisat_usb2_set_led_timer(a->dev, 1, 1);
return a->fe_adap[0].fe == NULL ? -ENODEV : 0;
}
/* Remote control */
/* the device is giving providing raw IR-signals to the host mapping
* it only to one remote control is just the default implementation
*/
#define NOMINAL_IR_BIT_TRANSITION_TIME_US 889
#define NOMINAL_IR_BIT_TIME_US (2 * NOMINAL_IR_BIT_TRANSITION_TIME_US)
#define FIRMWARE_CLOCK_TICK 83333
#define FIRMWARE_CLOCK_DIVISOR 256
#define IR_PERCENT_TOLERANCE 15
#define NOMINAL_IR_BIT_TRANSITION_TICKS ((NOMINAL_IR_BIT_TRANSITION_TIME_US * 1000 * 1000) / FIRMWARE_CLOCK_TICK)
#define NOMINAL_IR_BIT_TRANSITION_TICK_COUNT (NOMINAL_IR_BIT_TRANSITION_TICKS / FIRMWARE_CLOCK_DIVISOR)
#define NOMINAL_IR_BIT_TIME_TICKS ((NOMINAL_IR_BIT_TIME_US * 1000 * 1000) / FIRMWARE_CLOCK_TICK)
#define NOMINAL_IR_BIT_TIME_TICK_COUNT (NOMINAL_IR_BIT_TIME_TICKS / FIRMWARE_CLOCK_DIVISOR)
#define MINIMUM_IR_BIT_TRANSITION_TICK_COUNT (NOMINAL_IR_BIT_TRANSITION_TICK_COUNT - ((NOMINAL_IR_BIT_TRANSITION_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
#define MAXIMUM_IR_BIT_TRANSITION_TICK_COUNT (NOMINAL_IR_BIT_TRANSITION_TICK_COUNT + ((NOMINAL_IR_BIT_TRANSITION_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
#define MINIMUM_IR_BIT_TIME_TICK_COUNT (NOMINAL_IR_BIT_TIME_TICK_COUNT - ((NOMINAL_IR_BIT_TIME_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
#define MAXIMUM_IR_BIT_TIME_TICK_COUNT (NOMINAL_IR_BIT_TIME_TICK_COUNT + ((NOMINAL_IR_BIT_TIME_TICK_COUNT * IR_PERCENT_TOLERANCE) / 100))
static int technisat_usb2_get_ir(struct dvb_usb_device *d)
{
u8 buf[62], *b;
int ret;
struct ir_raw_event ev;
buf[0] = GET_IR_DATA_VENDOR_REQUEST;
buf[1] = 0x08;
buf[2] = 0x8f;
buf[3] = MINIMUM_IR_BIT_TRANSITION_TICK_COUNT;
buf[4] = MAXIMUM_IR_BIT_TIME_TICK_COUNT;
if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
return -EAGAIN;
ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
GET_IR_DATA_VENDOR_REQUEST,
USB_TYPE_VENDOR | USB_DIR_OUT,
0, 0,
buf, 5, 500);
if (ret < 0)
goto unlock;
buf[1] = 0;
buf[2] = 0;
ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0),
GET_IR_DATA_VENDOR_REQUEST,
USB_TYPE_VENDOR | USB_DIR_IN,
0x8080, 0,
buf, sizeof(buf), 500);
unlock:
mutex_unlock(&d->i2c_mutex);
if (ret < 0)
return ret;
if (ret == 1)
return 0; /* no key pressed */
/* decoding */
b = buf+1;
#if 0
deb_rc("RC: %d ", ret);
debug_dump(b, ret, deb_rc);
#endif
ev.pulse = 0;
while (1) {
ev.pulse = !ev.pulse;
ev.duration = (*b * FIRMWARE_CLOCK_DIVISOR * FIRMWARE_CLOCK_TICK) / 1000;
ir_raw_event_store(d->rc_dev, &ev);
b++;
if (*b == 0xff) {
ev.pulse = 0;
ev.duration = 888888*2;
ir_raw_event_store(d->rc_dev, &ev);
break;
}
}
ir_raw_event_handle(d->rc_dev);
return 1;
}
static int technisat_usb2_rc_query(struct dvb_usb_device *d)
{
int ret = technisat_usb2_get_ir(d);
if (ret < 0)
return ret;
if (ret == 0)
return 0;
if (!disable_led_control)
technisat_usb2_set_led(d, 1, LED_BLINK);
return 0;
}
/* DVB-USB and USB stuff follows */
static struct usb_device_id technisat_usb2_id_table[] = {
{ USB_DEVICE(USB_VID_TECHNISAT, USB_PID_TECHNISAT_USB2_DVB_S2) },
{ 0 } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, technisat_usb2_id_table);
/* device description */
static struct dvb_usb_device_properties technisat_usb2_devices = {
.caps = DVB_USB_IS_AN_I2C_ADAPTER,
.usb_ctrl = CYPRESS_FX2,
.identify_state = technisat_usb2_identify_state,
.firmware = "dvb-usb-SkyStar_USB_HD_FW_v17_63.HEX.fw",
.size_of_priv = sizeof(struct technisat_usb2_state),
.i2c_algo = &technisat_usb2_i2c_algo,
.power_ctrl = technisat_usb2_power_ctrl,
.read_mac_address = technisat_usb2_read_mac_address,
.num_adapters = 1,
.adapter = {
{
.num_frontends = 1,
.fe = {{
.frontend_attach = technisat_usb2_frontend_attach,
.stream = {
.type = USB_ISOC,
.count = 8,
.endpoint = 0x2,
.u = {
.isoc = {
.framesperurb = 32,
.framesize = 2048,
.interval = 3,
}
}
},
}},
.size_of_priv = 0,
},
},
.num_device_descs = 1,
.devices = {
{ "Technisat SkyStar USB HD (DVB-S/S2)",
{ &technisat_usb2_id_table[0], NULL },
{ NULL },
},
},
.rc.core = {
.rc_interval = 100,
.rc_codes = RC_MAP_TECHNISAT_USB2,
.module_name = "technisat-usb2",
.rc_query = technisat_usb2_rc_query,
.allowed_protos = RC_BIT_ALL,
.driver_type = RC_DRIVER_IR_RAW,
}
};
static int technisat_usb2_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct dvb_usb_device *dev;
if (dvb_usb_device_init(intf, &technisat_usb2_devices, THIS_MODULE,
&dev, adapter_nr) != 0)
return -ENODEV;
if (dev) {
struct technisat_usb2_state *state = dev->priv;
state->dev = dev;
if (!disable_led_control) {
INIT_DELAYED_WORK(&state->green_led_work,
technisat_usb2_green_led_control);
schedule_delayed_work(&state->green_led_work,
msecs_to_jiffies(500));
}
}
return 0;
}
static void technisat_usb2_disconnect(struct usb_interface *intf)
{
struct dvb_usb_device *dev = usb_get_intfdata(intf);
/* work and stuff was only created when the device is is hot-state */
if (dev != NULL) {
struct technisat_usb2_state *state = dev->priv;
if (state != NULL)
cancel_delayed_work_sync(&state->green_led_work);
}
dvb_usb_device_exit(intf);
}
static struct usb_driver technisat_usb2_driver = {
.name = "dvb_usb_technisat_usb2",
.probe = technisat_usb2_probe,
.disconnect = technisat_usb2_disconnect,
.id_table = technisat_usb2_id_table,
};
module_usb_driver(technisat_usb2_driver);
MODULE_AUTHOR("Patrick Boettcher <pboettcher@kernellabs.com>");
MODULE_DESCRIPTION("Driver for Technisat DVB-S/S2 USB 2.0 device");
MODULE_VERSION("1.0");
MODULE_LICENSE("GPL");