- 根目录:
- drivers
- media
- usb
- dvb-usb-v2
- dvb_usb_core.c
/*
* DVB USB framework
*
* Copyright (C) 2004-6 Patrick Boettcher <patrick.boettcher@desy.de>
* Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "dvb_usb_common.h"
int dvb_usbv2_disable_rc_polling;
module_param_named(disable_rc_polling, dvb_usbv2_disable_rc_polling, int, 0644);
MODULE_PARM_DESC(disable_rc_polling,
"disable remote control polling (default: 0)");
static int dvb_usb_force_pid_filter_usage;
module_param_named(force_pid_filter_usage, dvb_usb_force_pid_filter_usage,
int, 0444);
MODULE_PARM_DESC(force_pid_filter_usage,
"force all DVB USB devices to use a PID filter, if any (default: 0)");
static int dvb_usbv2_download_firmware(struct dvb_usb_device *d,
const char *name)
{
int ret;
const struct firmware *fw;
dev_dbg(&d->udev->dev, "%s:\n", __func__);
if (!d->props->download_firmware) {
ret = -EINVAL;
goto err;
}
ret = request_firmware(&fw, name, &d->udev->dev);
if (ret < 0) {
dev_err(&d->udev->dev,
"%s: Did not find the firmware file '%s'. Please see linux/Documentation/dvb/ for more details on firmware-problems. Status %d\n",
KBUILD_MODNAME, name, ret);
goto err;
}
dev_info(&d->udev->dev, "%s: downloading firmware from file '%s'\n",
KBUILD_MODNAME, name);
ret = d->props->download_firmware(d, fw);
release_firmware(fw);
if (ret < 0)
goto err;
return ret;
err:
dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int dvb_usbv2_i2c_init(struct dvb_usb_device *d)
{
int ret;
dev_dbg(&d->udev->dev, "%s:\n", __func__);
if (!d->props->i2c_algo)
return 0;
strlcpy(d->i2c_adap.name, d->name, sizeof(d->i2c_adap.name));
d->i2c_adap.algo = d->props->i2c_algo;
d->i2c_adap.dev.parent = &d->udev->dev;
i2c_set_adapdata(&d->i2c_adap, d);
ret = i2c_add_adapter(&d->i2c_adap);
if (ret < 0) {
d->i2c_adap.algo = NULL;
dev_err(&d->udev->dev, "%s: i2c_add_adapter() failed=%d\n",
KBUILD_MODNAME, ret);
goto err;
}
return 0;
err:
dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int dvb_usbv2_i2c_exit(struct dvb_usb_device *d)
{
dev_dbg(&d->udev->dev, "%s:\n", __func__);
if (d->i2c_adap.algo)
i2c_del_adapter(&d->i2c_adap);
return 0;
}
#if IS_ENABLED(CONFIG_RC_CORE)
static void dvb_usb_read_remote_control(struct work_struct *work)
{
struct dvb_usb_device *d = container_of(work,
struct dvb_usb_device, rc_query_work.work);
int ret;
/*
* When the parameter has been set to 1 via sysfs while the
* driver was running, or when bulk mode is enabled after IR init.
*/
if (dvb_usbv2_disable_rc_polling || d->rc.bulk_mode) {
d->rc_polling_active = false;
return;
}
ret = d->rc.query(d);
if (ret < 0) {
dev_err(&d->udev->dev, "%s: rc.query() failed=%d\n",
KBUILD_MODNAME, ret);
d->rc_polling_active = false;
return; /* stop polling */
}
schedule_delayed_work(&d->rc_query_work,
msecs_to_jiffies(d->rc.interval));
}
static int dvb_usbv2_remote_init(struct dvb_usb_device *d)
{
int ret;
struct rc_dev *dev;
dev_dbg(&d->udev->dev, "%s:\n", __func__);
if (dvb_usbv2_disable_rc_polling || !d->props->get_rc_config)
return 0;
d->rc.map_name = d->rc_map;
ret = d->props->get_rc_config(d, &d->rc);
if (ret < 0)
goto err;
/* disable rc when there is no keymap defined */
if (!d->rc.map_name)
return 0;
dev = rc_allocate_device();
if (!dev) {
ret = -ENOMEM;
goto err;
}
dev->dev.parent = &d->udev->dev;
dev->input_name = d->name;
usb_make_path(d->udev, d->rc_phys, sizeof(d->rc_phys));
strlcat(d->rc_phys, "/ir0", sizeof(d->rc_phys));
dev->input_phys = d->rc_phys;
usb_to_input_id(d->udev, &dev->input_id);
/* TODO: likely RC-core should took const char * */
dev->driver_name = (char *) d->props->driver_name;
dev->map_name = d->rc.map_name;
dev->driver_type = d->rc.driver_type;
dev->allowed_protos = d->rc.allowed_protos;
dev->change_protocol = d->rc.change_protocol;
dev->priv = d;
ret = rc_register_device(dev);
if (ret < 0) {
rc_free_device(dev);
goto err;
}
d->rc_dev = dev;
/* start polling if needed */
if (d->rc.query && !d->rc.bulk_mode) {
/* initialize a work queue for handling polling */
INIT_DELAYED_WORK(&d->rc_query_work,
dvb_usb_read_remote_control);
dev_info(&d->udev->dev,
"%s: schedule remote query interval to %d msecs\n",
KBUILD_MODNAME, d->rc.interval);
schedule_delayed_work(&d->rc_query_work,
msecs_to_jiffies(d->rc.interval));
d->rc_polling_active = true;
}
return 0;
err:
dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int dvb_usbv2_remote_exit(struct dvb_usb_device *d)
{
dev_dbg(&d->udev->dev, "%s:\n", __func__);
if (d->rc_dev) {
cancel_delayed_work_sync(&d->rc_query_work);
rc_unregister_device(d->rc_dev);
d->rc_dev = NULL;
}
return 0;
}
#else
#define dvb_usbv2_remote_init(args...) 0
#define dvb_usbv2_remote_exit(args...)
#endif
static void dvb_usb_data_complete(struct usb_data_stream *stream, u8 *buf,
size_t len)
{
struct dvb_usb_adapter *adap = stream->user_priv;
dvb_dmx_swfilter(&adap->demux, buf, len);
}
static void dvb_usb_data_complete_204(struct usb_data_stream *stream, u8 *buf,
size_t len)
{
struct dvb_usb_adapter *adap = stream->user_priv;
dvb_dmx_swfilter_204(&adap->demux, buf, len);
}
static void dvb_usb_data_complete_raw(struct usb_data_stream *stream, u8 *buf,
size_t len)
{
struct dvb_usb_adapter *adap = stream->user_priv;
dvb_dmx_swfilter_raw(&adap->demux, buf, len);
}
static int dvb_usbv2_adapter_stream_init(struct dvb_usb_adapter *adap)
{
dev_dbg(&adap_to_d(adap)->udev->dev, "%s: adap=%d\n", __func__,
adap->id);
adap->stream.udev = adap_to_d(adap)->udev;
adap->stream.user_priv = adap;
adap->stream.complete = dvb_usb_data_complete;
return usb_urb_initv2(&adap->stream, &adap->props->stream);
}
static int dvb_usbv2_adapter_stream_exit(struct dvb_usb_adapter *adap)
{
dev_dbg(&adap_to_d(adap)->udev->dev, "%s: adap=%d\n", __func__,
adap->id);
return usb_urb_exitv2(&adap->stream);
}
static int wait_schedule(void *ptr)
{
schedule();
return 0;
}
static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
{
struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;
struct dvb_usb_device *d = adap_to_d(adap);
int ret = 0;
struct usb_data_stream_properties stream_props;
dev_dbg(&d->udev->dev,
"%s: adap=%d active_fe=%d feed_type=%d setting pid [%s]: %04x (%04d) at index %d\n",
__func__, adap->id, adap->active_fe, dvbdmxfeed->type,
adap->pid_filtering ? "yes" : "no", dvbdmxfeed->pid,
dvbdmxfeed->pid, dvbdmxfeed->index);
/* wait init is done */
wait_on_bit(&adap->state_bits, ADAP_INIT, wait_schedule,
TASK_UNINTERRUPTIBLE);
if (adap->active_fe == -1)
return -EINVAL;
/* skip feed setup if we are already feeding */
if (adap->feed_count++ > 0)
goto skip_feed_start;
/* set 'streaming' status bit */
set_bit(ADAP_STREAMING, &adap->state_bits);
/* resolve input and output streaming parameters */
if (d->props->get_stream_config) {
memcpy(&stream_props, &adap->props->stream,
sizeof(struct usb_data_stream_properties));
ret = d->props->get_stream_config(adap->fe[adap->active_fe],
&adap->ts_type, &stream_props);
if (ret)
dev_err(&d->udev->dev,
"%s: get_stream_config() failed=%d\n",
KBUILD_MODNAME, ret);
} else {
stream_props = adap->props->stream;
}
switch (adap->ts_type) {
case DVB_USB_FE_TS_TYPE_204:
adap->stream.complete = dvb_usb_data_complete_204;
break;
case DVB_USB_FE_TS_TYPE_RAW:
adap->stream.complete = dvb_usb_data_complete_raw;
break;
case DVB_USB_FE_TS_TYPE_188:
default:
adap->stream.complete = dvb_usb_data_complete;
break;
}
/* submit USB streaming packets */
usb_urb_submitv2(&adap->stream, &stream_props);
/* enable HW PID filter */
if (adap->pid_filtering && adap->props->pid_filter_ctrl) {
ret = adap->props->pid_filter_ctrl(adap, 1);
if (ret)
dev_err(&d->udev->dev,
"%s: pid_filter_ctrl() failed=%d\n",
KBUILD_MODNAME, ret);
}
/* ask device to start streaming */
if (d->props->streaming_ctrl) {
ret = d->props->streaming_ctrl(adap->fe[adap->active_fe], 1);
if (ret)
dev_err(&d->udev->dev,
"%s: streaming_ctrl() failed=%d\n",
KBUILD_MODNAME, ret);
}
skip_feed_start:
/* add PID to device HW PID filter */
if (adap->pid_filtering && adap->props->pid_filter) {
ret = adap->props->pid_filter(adap, dvbdmxfeed->index,
dvbdmxfeed->pid, 1);
if (ret)
dev_err(&d->udev->dev, "%s: pid_filter() failed=%d\n",
KBUILD_MODNAME, ret);
}
if (ret)
dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
{
struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;
struct dvb_usb_device *d = adap_to_d(adap);
int ret = 0;
dev_dbg(&d->udev->dev,
"%s: adap=%d active_fe=%d feed_type=%d setting pid [%s]: %04x (%04d) at index %d\n",
__func__, adap->id, adap->active_fe, dvbdmxfeed->type,
adap->pid_filtering ? "yes" : "no", dvbdmxfeed->pid,
dvbdmxfeed->pid, dvbdmxfeed->index);
if (adap->active_fe == -1)
return -EINVAL;
/* remove PID from device HW PID filter */
if (adap->pid_filtering && adap->props->pid_filter) {
ret = adap->props->pid_filter(adap, dvbdmxfeed->index,
dvbdmxfeed->pid, 0);
if (ret)
dev_err(&d->udev->dev, "%s: pid_filter() failed=%d\n",
KBUILD_MODNAME, ret);
}
/* we cannot stop streaming until last PID is removed */
if (--adap->feed_count > 0)
goto skip_feed_stop;
/* ask device to stop streaming */
if (d->props->streaming_ctrl) {
ret = d->props->streaming_ctrl(adap->fe[adap->active_fe], 0);
if (ret)
dev_err(&d->udev->dev,
"%s: streaming_ctrl() failed=%d\n",
KBUILD_MODNAME, ret);
}
/* disable HW PID filter */
if (adap->pid_filtering && adap->props->pid_filter_ctrl) {
ret = adap->props->pid_filter_ctrl(adap, 0);
if (ret)
dev_err(&d->udev->dev,
"%s: pid_filter_ctrl() failed=%d\n",
KBUILD_MODNAME, ret);
}
/* kill USB streaming packets */
usb_urb_killv2(&adap->stream);
/* clear 'streaming' status bit */
clear_bit(ADAP_STREAMING, &adap->state_bits);
smp_mb__after_clear_bit();
wake_up_bit(&adap->state_bits, ADAP_STREAMING);
skip_feed_stop:
if (ret)
dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int dvb_usbv2_adapter_dvb_init(struct dvb_usb_adapter *adap)
{
int ret;
struct dvb_usb_device *d = adap_to_d(adap);
dev_dbg(&d->udev->dev, "%s: adap=%d\n", __func__, adap->id);
ret = dvb_register_adapter(&adap->dvb_adap, d->name, d->props->owner,
&d->udev->dev, d->props->adapter_nr);
if (ret < 0) {
dev_dbg(&d->udev->dev, "%s: dvb_register_adapter() failed=%d\n",
__func__, ret);
goto err_dvb_register_adapter;
}
adap->dvb_adap.priv = adap;
if (d->props->read_mac_address) {
ret = d->props->read_mac_address(adap,
adap->dvb_adap.proposed_mac);
if (ret < 0)
goto err_dvb_dmx_init;
dev_info(&d->udev->dev, "%s: MAC address: %pM\n",
KBUILD_MODNAME, adap->dvb_adap.proposed_mac);
}
adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
adap->demux.priv = adap;
adap->demux.filternum = 0;
adap->demux.filternum = adap->max_feed_count;
adap->demux.feednum = adap->demux.filternum;
adap->demux.start_feed = dvb_usb_start_feed;
adap->demux.stop_feed = dvb_usb_stop_feed;
adap->demux.write_to_decoder = NULL;
ret = dvb_dmx_init(&adap->demux);
if (ret < 0) {
dev_err(&d->udev->dev, "%s: dvb_dmx_init() failed=%d\n",
KBUILD_MODNAME, ret);
goto err_dvb_dmx_init;
}
adap->dmxdev.filternum = adap->demux.filternum;
adap->dmxdev.demux = &adap->demux.dmx;
adap->dmxdev.capabilities = 0;
ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap);
if (ret < 0) {
dev_err(&d->udev->dev, "%s: dvb_dmxdev_init() failed=%d\n",
KBUILD_MODNAME, ret);
goto err_dvb_dmxdev_init;
}
ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net, &adap->demux.dmx);
if (ret < 0) {
dev_err(&d->udev->dev, "%s: dvb_net_init() failed=%d\n",
KBUILD_MODNAME, ret);
goto err_dvb_net_init;
}
return 0;
err_dvb_net_init:
dvb_dmxdev_release(&adap->dmxdev);
err_dvb_dmxdev_init:
dvb_dmx_release(&adap->demux);
err_dvb_dmx_init:
dvb_unregister_adapter(&adap->dvb_adap);
err_dvb_register_adapter:
adap->dvb_adap.priv = NULL;
return ret;
}
static int dvb_usbv2_adapter_dvb_exit(struct dvb_usb_adapter *adap)
{
dev_dbg(&adap_to_d(adap)->udev->dev, "%s: adap=%d\n", __func__,
adap->id);
if (adap->dvb_adap.priv) {
dvb_net_release(&adap->dvb_net);
adap->demux.dmx.close(&adap->demux.dmx);
dvb_dmxdev_release(&adap->dmxdev);
dvb_dmx_release(&adap->demux);
dvb_unregister_adapter(&adap->dvb_adap);
}
return 0;
}
static int dvb_usbv2_device_power_ctrl(struct dvb_usb_device *d, int onoff)
{
int ret;
if (onoff)
d->powered++;
else
d->powered--;
if (d->powered == 0 || (onoff && d->powered == 1)) {
/* when switching from 1 to 0 or from 0 to 1 */
dev_dbg(&d->udev->dev, "%s: power=%d\n", __func__, onoff);
if (d->props->power_ctrl) {
ret = d->props->power_ctrl(d, onoff);
if (ret < 0)
goto err;
}
}
return 0;
err:
dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int dvb_usb_fe_init(struct dvb_frontend *fe)
{
int ret;
struct dvb_usb_adapter *adap = fe->dvb->priv;
struct dvb_usb_device *d = adap_to_d(adap);
dev_dbg(&d->udev->dev, "%s: adap=%d fe=%d\n", __func__, adap->id,
fe->id);
if (!adap->suspend_resume_active) {
adap->active_fe = fe->id;
set_bit(ADAP_INIT, &adap->state_bits);
}
ret = dvb_usbv2_device_power_ctrl(d, 1);
if (ret < 0)
goto err;
if (d->props->frontend_ctrl) {
ret = d->props->frontend_ctrl(fe, 1);
if (ret < 0)
goto err;
}
if (adap->fe_init[fe->id]) {
ret = adap->fe_init[fe->id](fe);
if (ret < 0)
goto err;
}
err:
if (!adap->suspend_resume_active) {
clear_bit(ADAP_INIT, &adap->state_bits);
smp_mb__after_clear_bit();
wake_up_bit(&adap->state_bits, ADAP_INIT);
}
dev_dbg(&d->udev->dev, "%s: ret=%d\n", __func__, ret);
return ret;
}
static int dvb_usb_fe_sleep(struct dvb_frontend *fe)
{
int ret;
struct dvb_usb_adapter *adap = fe->dvb->priv;
struct dvb_usb_device *d = adap_to_d(adap);
dev_dbg(&d->udev->dev, "%s: adap=%d fe=%d\n", __func__, adap->id,
fe->id);
if (!adap->suspend_resume_active) {
set_bit(ADAP_SLEEP, &adap->state_bits);
wait_on_bit(&adap->state_bits, ADAP_STREAMING, wait_schedule,
TASK_UNINTERRUPTIBLE);
}
if (adap->fe_sleep[fe->id]) {
ret = adap->fe_sleep[fe->id](fe);
if (ret < 0)
goto err;
}
if (d->props->frontend_ctrl) {
ret = d->props->frontend_ctrl(fe, 0);
if (ret < 0)
goto err;
}
ret = dvb_usbv2_device_power_ctrl(d, 0);
if (ret < 0)
goto err;
err:
if (!adap->suspend_resume_active) {
adap->active_fe = -1;
clear_bit(ADAP_SLEEP, &adap->state_bits);
smp_mb__after_clear_bit();
wake_up_bit(&adap->state_bits, ADAP_SLEEP);
}
dev_dbg(&d->udev->dev, "%s: ret=%d\n", __func__, ret);
return ret;
}
static int dvb_usbv2_adapter_frontend_init(struct dvb_usb_adapter *adap)
{
int ret, i, count_registered = 0;
struct dvb_usb_device *d = adap_to_d(adap);
dev_dbg(&d->udev->dev, "%s: adap=%d\n", __func__, adap->id);
memset(adap->fe, 0, sizeof(adap->fe));
adap->active_fe = -1;
if (d->props->frontend_attach) {
ret = d->props->frontend_attach(adap);
if (ret < 0) {
dev_dbg(&d->udev->dev,
"%s: frontend_attach() failed=%d\n",
__func__, ret);
goto err_dvb_frontend_detach;
}
} else {
dev_dbg(&d->udev->dev, "%s: frontend_attach() do not exists\n",
__func__);
ret = 0;
goto err;
}
for (i = 0; i < MAX_NO_OF_FE_PER_ADAP && adap->fe[i]; i++) {
adap->fe[i]->id = i;
/* re-assign sleep and wakeup functions */
adap->fe_init[i] = adap->fe[i]->ops.init;
adap->fe[i]->ops.init = dvb_usb_fe_init;
adap->fe_sleep[i] = adap->fe[i]->ops.sleep;
adap->fe[i]->ops.sleep = dvb_usb_fe_sleep;
ret = dvb_register_frontend(&adap->dvb_adap, adap->fe[i]);
if (ret < 0) {
dev_err(&d->udev->dev,
"%s: frontend%d registration failed\n",
KBUILD_MODNAME, i);
goto err_dvb_unregister_frontend;
}
count_registered++;
}
if (d->props->tuner_attach) {
ret = d->props->tuner_attach(adap);
if (ret < 0) {
dev_dbg(&d->udev->dev, "%s: tuner_attach() failed=%d\n",
__func__, ret);
goto err_dvb_unregister_frontend;
}
}
return 0;
err_dvb_unregister_frontend:
for (i = count_registered - 1; i >= 0; i--)
dvb_unregister_frontend(adap->fe[i]);
err_dvb_frontend_detach:
for (i = MAX_NO_OF_FE_PER_ADAP - 1; i >= 0; i--) {
if (adap->fe[i]) {
dvb_frontend_detach(adap->fe[i]);
adap->fe[i] = NULL;
}
}
err:
dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int dvb_usbv2_adapter_frontend_exit(struct dvb_usb_adapter *adap)
{
int i;
dev_dbg(&adap_to_d(adap)->udev->dev, "%s: adap=%d\n", __func__,
adap->id);
for (i = MAX_NO_OF_FE_PER_ADAP - 1; i >= 0; i--) {
if (adap->fe[i]) {
dvb_unregister_frontend(adap->fe[i]);
dvb_frontend_detach(adap->fe[i]);
}
}
return 0;
}
static int dvb_usbv2_adapter_init(struct dvb_usb_device *d)
{
struct dvb_usb_adapter *adap;
int ret, i, adapter_count;
/* resolve adapter count */
adapter_count = d->props->num_adapters;
if (d->props->get_adapter_count) {
ret = d->props->get_adapter_count(d);
if (ret < 0)
goto err;
adapter_count = ret;
}
for (i = 0; i < adapter_count; i++) {
adap = &d->adapter[i];
adap->id = i;
adap->props = &d->props->adapter[i];
/* speed - when running at FULL speed we need a HW PID filter */
if (d->udev->speed == USB_SPEED_FULL &&
!(adap->props->caps & DVB_USB_ADAP_HAS_PID_FILTER)) {
dev_err(&d->udev->dev,
"%s: this USB2.0 device cannot be run on a USB1.1 port (it lacks a hardware PID filter)\n",
KBUILD_MODNAME);
ret = -ENODEV;
goto err;
} else if ((d->udev->speed == USB_SPEED_FULL &&
adap->props->caps & DVB_USB_ADAP_HAS_PID_FILTER) ||
(adap->props->caps & DVB_USB_ADAP_NEED_PID_FILTERING)) {
dev_info(&d->udev->dev,
"%s: will use the device's hardware PID filter (table count: %d)\n",
KBUILD_MODNAME,
adap->props->pid_filter_count);
adap->pid_filtering = 1;
adap->max_feed_count = adap->props->pid_filter_count;
} else {
dev_info(&d->udev->dev,
"%s: will pass the complete MPEG2 transport stream to the software demuxer\n",
KBUILD_MODNAME);
adap->pid_filtering = 0;
adap->max_feed_count = 255;
}
if (!adap->pid_filtering && dvb_usb_force_pid_filter_usage &&
adap->props->caps & DVB_USB_ADAP_HAS_PID_FILTER) {
dev_info(&d->udev->dev,
"%s: PID filter enabled by module option\n",
KBUILD_MODNAME);
adap->pid_filtering = 1;
adap->max_feed_count = adap->props->pid_filter_count;
}
ret = dvb_usbv2_adapter_stream_init(adap);
if (ret)
goto err;
ret = dvb_usbv2_adapter_dvb_init(adap);
if (ret)
goto err;
ret = dvb_usbv2_adapter_frontend_init(adap);
if (ret)
goto err;
/* use exclusive FE lock if there is multiple shared FEs */
if (adap->fe[1])
adap->dvb_adap.mfe_shared = 1;
}
return 0;
err:
dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int dvb_usbv2_adapter_exit(struct dvb_usb_device *d)
{
int i;
dev_dbg(&d->udev->dev, "%s:\n", __func__);
for (i = MAX_NO_OF_ADAPTER_PER_DEVICE - 1; i >= 0; i--) {
if (d->adapter[i].props) {
dvb_usbv2_adapter_frontend_exit(&d->adapter[i]);
dvb_usbv2_adapter_dvb_exit(&d->adapter[i]);
dvb_usbv2_adapter_stream_exit(&d->adapter[i]);
}
}
return 0;
}
/* general initialization functions */
static int dvb_usbv2_exit(struct dvb_usb_device *d)
{
dev_dbg(&d->udev->dev, "%s:\n", __func__);
dvb_usbv2_remote_exit(d);
dvb_usbv2_adapter_exit(d);
dvb_usbv2_i2c_exit(d);
kfree(d->priv);
kfree(d);
return 0;
}
static int dvb_usbv2_init(struct dvb_usb_device *d)
{
int ret;
dev_dbg(&d->udev->dev, "%s:\n", __func__);
dvb_usbv2_device_power_ctrl(d, 1);
if (d->props->read_config) {
ret = d->props->read_config(d);
if (ret < 0)
goto err;
}
ret = dvb_usbv2_i2c_init(d);
if (ret < 0)
goto err;
ret = dvb_usbv2_adapter_init(d);
if (ret < 0)
goto err;
if (d->props->init) {
ret = d->props->init(d);
if (ret < 0)
goto err;
}
ret = dvb_usbv2_remote_init(d);
if (ret < 0)
goto err;
dvb_usbv2_device_power_ctrl(d, 0);
return 0;
err:
dvb_usbv2_device_power_ctrl(d, 0);
dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
/*
* udev, which is used for the firmware downloading, requires we cannot
* block during module_init(). module_init() calls USB probe() which
* is this routine. Due to that we delay actual operation using workqueue
* and return always success here.
*/
static void dvb_usbv2_init_work(struct work_struct *work)
{
int ret;
struct dvb_usb_device *d =
container_of(work, struct dvb_usb_device, probe_work);
d->work_pid = current->pid;
dev_dbg(&d->udev->dev, "%s: work_pid=%d\n", __func__, d->work_pid);
if (d->props->size_of_priv) {
d->priv = kzalloc(d->props->size_of_priv, GFP_KERNEL);
if (!d->priv) {
dev_err(&d->udev->dev, "%s: kzalloc() failed\n",
KBUILD_MODNAME);
ret = -ENOMEM;
goto err_usb_driver_release_interface;
}
}
if (d->props->identify_state) {
const char *name = NULL;
ret = d->props->identify_state(d, &name);
if (ret == 0) {
;
} else if (ret == COLD) {
dev_info(&d->udev->dev,
"%s: found a '%s' in cold state\n",
KBUILD_MODNAME, d->name);
if (!name)
name = d->props->firmware;
ret = dvb_usbv2_download_firmware(d, name);
if (ret == 0) {
/* device is warm, continue initialization */
;
} else if (ret == RECONNECTS_USB) {
/*
* USB core will call disconnect() and then
* probe() as device reconnects itself from the
* USB bus. disconnect() will release all driver
* resources and probe() is called for 'new'
* device. As 'new' device is warm we should
* never go here again.
*/
return;
} else {
/*
* Unexpected error. We must unregister driver
* manually from the device, because device is
* already register by returning from probe()
* with success. usb_driver_release_interface()
* finally calls disconnect() in order to free
* resources.
*/
goto err_usb_driver_release_interface;
}
} else {
goto err_usb_driver_release_interface;
}
}
dev_info(&d->udev->dev, "%s: found a '%s' in warm state\n",
KBUILD_MODNAME, d->name);
ret = dvb_usbv2_init(d);
if (ret < 0)
goto err_usb_driver_release_interface;
dev_info(&d->udev->dev,
"%s: '%s' successfully initialized and connected\n",
KBUILD_MODNAME, d->name);
return;
err_usb_driver_release_interface:
dev_info(&d->udev->dev, "%s: '%s' error while loading driver (%d)\n",
KBUILD_MODNAME, d->name, ret);
usb_driver_release_interface(to_usb_driver(d->intf->dev.driver),
d->intf);
dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
return;
}
int dvb_usbv2_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
int ret;
struct dvb_usb_device *d;
struct usb_device *udev = interface_to_usbdev(intf);
struct dvb_usb_driver_info *driver_info =
(struct dvb_usb_driver_info *) id->driver_info;
dev_dbg(&udev->dev, "%s: bInterfaceNumber=%d\n", __func__,
intf->cur_altsetting->desc.bInterfaceNumber);
if (!id->driver_info) {
dev_err(&udev->dev, "%s: driver_info failed\n", KBUILD_MODNAME);
ret = -ENODEV;
goto err;
}
d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL);
if (!d) {
dev_err(&udev->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
ret = -ENOMEM;
goto err;
}
d->name = driver_info->name;
d->rc_map = driver_info->rc_map;
d->udev = udev;
d->intf = intf;
d->props = driver_info->props;
if (d->intf->cur_altsetting->desc.bInterfaceNumber !=
d->props->bInterfaceNumber) {
ret = -ENODEV;
goto err_kfree;
}
mutex_init(&d->usb_mutex);
mutex_init(&d->i2c_mutex);
INIT_WORK(&d->probe_work, dvb_usbv2_init_work);
usb_set_intfdata(intf, d);
ret = schedule_work(&d->probe_work);
if (ret < 0) {
dev_err(&d->udev->dev, "%s: schedule_work() failed\n",
KBUILD_MODNAME);
goto err_kfree;
}
return 0;
err_kfree:
kfree(d);
err:
dev_dbg(&udev->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
EXPORT_SYMBOL(dvb_usbv2_probe);
void dvb_usbv2_disconnect(struct usb_interface *intf)
{
struct dvb_usb_device *d = usb_get_intfdata(intf);
const char *name = d->name;
struct device dev = d->udev->dev;
dev_dbg(&d->udev->dev, "%s: pid=%d work_pid=%d\n", __func__,
current->pid, d->work_pid);
/* ensure initialization work is finished until release resources */
if (d->work_pid != current->pid)
cancel_work_sync(&d->probe_work);
if (d->props->exit)
d->props->exit(d);
dvb_usbv2_exit(d);
dev_info(&dev, "%s: '%s' successfully deinitialized and disconnected\n",
KBUILD_MODNAME, name);
}
EXPORT_SYMBOL(dvb_usbv2_disconnect);
int dvb_usbv2_suspend(struct usb_interface *intf, pm_message_t msg)
{
struct dvb_usb_device *d = usb_get_intfdata(intf);
int ret = 0, i, active_fe;
struct dvb_frontend *fe;
dev_dbg(&d->udev->dev, "%s:\n", __func__);
/* stop remote controller poll */
if (d->rc_polling_active)
cancel_delayed_work_sync(&d->rc_query_work);
for (i = MAX_NO_OF_ADAPTER_PER_DEVICE - 1; i >= 0; i--) {
active_fe = d->adapter[i].active_fe;
if (d->adapter[i].dvb_adap.priv && active_fe != -1) {
fe = d->adapter[i].fe[active_fe];
d->adapter[i].suspend_resume_active = true;
if (d->props->streaming_ctrl)
d->props->streaming_ctrl(fe, 0);
/* stop usb streaming */
usb_urb_killv2(&d->adapter[i].stream);
ret = dvb_frontend_suspend(fe);
}
}
return ret;
}
EXPORT_SYMBOL(dvb_usbv2_suspend);
static int dvb_usbv2_resume_common(struct dvb_usb_device *d)
{
int ret = 0, i, active_fe;
struct dvb_frontend *fe;
dev_dbg(&d->udev->dev, "%s:\n", __func__);
for (i = 0; i < MAX_NO_OF_ADAPTER_PER_DEVICE; i++) {
active_fe = d->adapter[i].active_fe;
if (d->adapter[i].dvb_adap.priv && active_fe != -1) {
fe = d->adapter[i].fe[active_fe];
ret = dvb_frontend_resume(fe);
/* resume usb streaming */
usb_urb_submitv2(&d->adapter[i].stream, NULL);
if (d->props->streaming_ctrl)
d->props->streaming_ctrl(fe, 1);
d->adapter[i].suspend_resume_active = false;
}
}
/* start remote controller poll */
if (d->rc_polling_active)
schedule_delayed_work(&d->rc_query_work,
msecs_to_jiffies(d->rc.interval));
return ret;
}
int dvb_usbv2_resume(struct usb_interface *intf)
{
struct dvb_usb_device *d = usb_get_intfdata(intf);
dev_dbg(&d->udev->dev, "%s:\n", __func__);
return dvb_usbv2_resume_common(d);
}
EXPORT_SYMBOL(dvb_usbv2_resume);
int dvb_usbv2_reset_resume(struct usb_interface *intf)
{
struct dvb_usb_device *d = usb_get_intfdata(intf);
int ret;
dev_dbg(&d->udev->dev, "%s:\n", __func__);
dvb_usbv2_device_power_ctrl(d, 1);
if (d->props->init)
d->props->init(d);
ret = dvb_usbv2_resume_common(d);
dvb_usbv2_device_power_ctrl(d, 0);
return ret;
}
EXPORT_SYMBOL(dvb_usbv2_reset_resume);
MODULE_VERSION("2.0");
MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_DESCRIPTION("DVB USB common");
MODULE_LICENSE("GPL");