--- /dev/null
+/*
+ * DVB USB library - provides a generic interface for a DVB USB device driver.
+ *
+ * dvb-usb-init.c
+ *
+ * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
+ *
+ * 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, version 2.
+ *
+ * see Documentation/dvb/README.dvb-usb for more information
+ */
+#include "dvb_usb_common.h"
+#include <linux/usb/input.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;
+
+ if (!d->props->download_firmware) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ ret = request_firmware(&fw, name, &d->udev->dev);
+ if (ret < 0) {
+ pr_err("%s: did not find the firmware file. (%s) " \
+ "Please see linux/Documentation/dvb/ for " \
+ "more details on firmware-problems. (%d)\n",
+ KBUILD_MODNAME, name, ret);
+ goto err;
+ }
+
+ pr_info("%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:
+ pr_debug("%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+static int dvb_usbv2_i2c_init(struct dvb_usb_device *d)
+{
+ int ret;
+
+ pr_debug("%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;
+ pr_err("%s: i2c_add_adapter() failed=%d\n", KBUILD_MODNAME,
+ ret);
+ goto err;
+ }
+
+ return 0;
+err:
+ pr_debug("%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+static int dvb_usbv2_i2c_exit(struct dvb_usb_device *d)
+{
+ pr_debug("%s:\n", __func__);
+
+ if (d->i2c_adap.algo)
+ i2c_del_adapter(&d->i2c_adap);
+
+ return 0;
+}
+
+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;
+
+ /* TODO: need a lock here. We can simply skip checking for the remote
+ control if we're busy. */
+
+ /* 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)
+ return;
+
+ ret = d->rc.query(d);
+ if (ret < 0)
+ pr_err("%s: error %d while querying for an remote control " \
+ "event\n", KBUILD_MODNAME, ret);
+
+ 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;
+
+ pr_debug("%s:\n", __func__);
+
+ if (dvb_usbv2_disable_rc_polling || !d->props->get_rc_config)
+ return 0;
+
+ ret = d->props->get_rc_config(d, &d->rc);
+ if (ret < 0)
+ goto err;
+
+ dev = rc_allocate_device();
+ if (!dev) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ dev->dev.parent = &d->udev->dev;
+ dev->input_name = "IR-receiver inside an USB DVB receiver";
+ 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->driver_type = d->rc.driver_type;
+ dev->allowed_protos = d->rc.allowed_protos;
+ dev->change_protocol = d->rc.change_protocol;
+ dev->priv = d;
+ /* select used keymap */
+ if (d->rc.map_name)
+ dev->map_name = d->rc.map_name;
+ else if (d->rc_map)
+ dev->map_name = d->rc_map;
+ else
+ dev->map_name = RC_MAP_EMPTY; /* keep rc enabled */
+
+ ret = rc_register_device(dev);
+ if (ret < 0) {
+ rc_free_device(dev);
+ goto err;
+ }
+
+ d->input_dev = NULL;
+ 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);
+ pr_info("%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));
+ }
+
+ return 0;
+err:
+ pr_debug("%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+static int dvb_usbv2_remote_exit(struct dvb_usb_device *d)
+{
+ pr_debug("%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;
+}
+
+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);
+}
+
+int dvb_usbv2_adapter_stream_init(struct dvb_usb_adapter *adap)
+{
+ pr_debug("%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);
+}
+
+int dvb_usbv2_adapter_stream_exit(struct dvb_usb_adapter *adap)
+{
+ pr_debug("%s: adap=%d\n", __func__, adap->id);
+ usb_urb_exitv2(&adap->stream);
+
+ return 0;
+}
+
+static inline int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed,
+ int count)
+{
+ struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;
+ struct dvb_usb_device *d = adap_to_d(adap);
+ int ret;
+ pr_debug("%s: adap=%d active_fe=%d feed_type=%d setting pid [%s]: " \
+ "%04x (%04d) at index %d '%s'\n", __func__, adap->id,
+ adap->active_fe, dvbdmxfeed->type,
+ adap->pid_filtering ? "yes" : "no", dvbdmxfeed->pid,
+ dvbdmxfeed->pid, dvbdmxfeed->index,
+ (count == 1) ? "on" : "off");
+
+ if (adap->active_fe == -1)
+ return -EINVAL;
+
+ adap->feed_count += count;
+
+ /* stop feeding if it is last pid */
+ if (adap->feed_count == 0) {
+ pr_debug("%s: stop feeding\n", __func__);
+ usb_urb_killv2(&adap->stream);
+
+ if (d->props->streaming_ctrl) {
+ ret = d->props->streaming_ctrl(adap, 0);
+ if (ret < 0) {
+ pr_err("%s: streaming_ctrl() failed=%d\n",
+ KBUILD_MODNAME, ret);
+ goto err_mutex_unlock;
+ }
+ }
+ mutex_unlock(&adap->sync_mutex);
+ }
+
+ /* activate the pid on the device pid filter */
+ if (adap->props->caps & DVB_USB_ADAP_HAS_PID_FILTER &&
+ adap->pid_filtering &&
+ adap->props->pid_filter)
+ ret = adap->props->pid_filter(adap, dvbdmxfeed->index,
+ dvbdmxfeed->pid, (count == 1) ? 1 : 0);
+ if (ret < 0)
+ pr_err("%s: pid_filter() failed=%d\n",
+ KBUILD_MODNAME, ret);
+
+ /* start feeding if it is first pid */
+ if (adap->feed_count == 1 && count == 1) {
+ struct usb_data_stream_properties stream_props;
+ mutex_lock(&adap->sync_mutex);
+ pr_debug("%s: start feeding\n", __func__);
+
+ /* resolve input and output streaming paramters */
+ 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 < 0)
+ goto err_mutex_unlock;
+ } 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;
+ }
+
+ usb_urb_submitv2(&adap->stream, &stream_props);
+
+ if (adap->props->caps & DVB_USB_ADAP_HAS_PID_FILTER &&
+ adap->props->caps &
+ DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF &&
+ adap->props->pid_filter_ctrl) {
+ ret = adap->props->pid_filter_ctrl(adap,
+ adap->pid_filtering);
+ if (ret < 0) {
+ pr_err("%s: pid_filter_ctrl() failed=%d\n",
+ KBUILD_MODNAME, ret);
+ goto err_mutex_unlock;
+ }
+ }
+
+ if (d->props->streaming_ctrl) {
+ ret = d->props->streaming_ctrl(adap, 1);
+ if (ret < 0) {
+ pr_err("%s: streaming_ctrl() failed=%d\n",
+ KBUILD_MODNAME, ret);
+ goto err_mutex_unlock;
+ }
+ }
+ }
+
+ return 0;
+err_mutex_unlock:
+ mutex_unlock(&adap->sync_mutex);
+ pr_debug("%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
+{
+ return dvb_usb_ctrl_feed(dvbdmxfeed, 1);
+}
+
+static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
+{
+ return dvb_usb_ctrl_feed(dvbdmxfeed, -1);
+}
+
+int dvb_usbv2_adapter_dvb_init(struct dvb_usb_adapter *adap)
+{
+ int ret;
+ struct dvb_usb_device *d = adap_to_d(adap);
+ pr_debug("%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) {
+ pr_debug("%s: dvb_register_adapter() failed=%d\n", __func__,
+ ret);
+ goto err;
+ }
+
+ 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_dmx;
+
+ pr_info("%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;
+ if (adap->demux.filternum < adap->max_feed_count)
+ 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) {
+ pr_err("%s: dvb_dmx_init() failed=%d\n", KBUILD_MODNAME, ret);
+ goto err_dmx;
+ }
+
+ 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) {
+ pr_err("%s: dvb_dmxdev_init() failed=%d\n", KBUILD_MODNAME,
+ ret);
+ goto err_dmx_dev;
+ }
+
+ ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net, &adap->demux.dmx);
+ if (ret < 0) {
+ pr_err("%s: dvb_net_init() failed=%d\n", KBUILD_MODNAME, ret);
+ goto err_net_init;
+ }
+
+ mutex_init(&adap->sync_mutex);
+
+ return 0;
+err_net_init:
+ dvb_dmxdev_release(&adap->dmxdev);
+err_dmx_dev:
+ dvb_dmx_release(&adap->demux);
+err_dmx:
+ dvb_unregister_adapter(&adap->dvb_adap);
+err:
+ adap->dvb_adap.priv = NULL;
+ return ret;
+}
+
+int dvb_usbv2_adapter_dvb_exit(struct dvb_usb_adapter *adap)
+{
+ pr_debug("%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;
+}
+
+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 */
+ pr_debug("%s: power control=%d\n", __func__, onoff);
+ if (d->props->power_ctrl) {
+ ret = d->props->power_ctrl(d, onoff);
+ goto err;
+ }
+ }
+
+ return 0;
+err:
+ pr_debug("%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+static int dvb_usb_fe_wakeup(struct dvb_frontend *fe)
+{
+ int ret;
+ struct dvb_usb_adapter *adap = fe->dvb->priv;
+ struct dvb_usb_device *d = adap_to_d(adap);
+ mutex_lock(&adap->sync_mutex);
+ pr_debug("%s: adap=%d fe=%d\n", __func__, adap->id, fe->id);
+
+ 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;
+ }
+
+ adap->active_fe = fe->id;
+ mutex_unlock(&adap->sync_mutex);
+
+ return 0;
+err:
+ mutex_unlock(&adap->sync_mutex);
+ pr_debug("%s: failed=%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);
+ mutex_lock(&adap->sync_mutex);
+ pr_debug("%s: adap=%d fe=%d\n", __func__, adap->id, fe->id);
+
+ 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;
+
+ adap->active_fe = -1;
+ mutex_unlock(&adap->sync_mutex);
+
+ return 0;
+err:
+ mutex_unlock(&adap->sync_mutex);
+ pr_debug("%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+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);
+ pr_debug("%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) {
+ pr_debug("%s: frontend_attach() failed=%d\n", __func__,
+ ret);
+ goto err_dvb_frontend_detach;
+ }
+ } else {
+ pr_debug("%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_wakeup;
+ 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) {
+ pr_err("%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) {
+ pr_debug("%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]);
+ }
+
+err:
+ pr_debug("%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+int dvb_usbv2_adapter_frontend_exit(struct dvb_usb_adapter *adap)
+{
+ int i;
+ pr_debug("%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)) {
+ pr_err("%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)) {
+ pr_info("%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 {
+ pr_info("%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) {
+ pr_info("%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;
+
+ adap->dvb_adap.fe_ioctl_override = d->props->fe_ioctl_override;
+ }
+
+ return 0;
+err:
+ pr_debug("%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+static int dvb_usbv2_adapter_exit(struct dvb_usb_device *d)
+{
+ int i;
+
+ pr_debug("%s:\n", __func__);
+
+ for (i = MAX_NO_OF_ADAPTER_PER_DEVICE - 1; i >= 0; i--) {
+ 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)
+{
+ pr_debug("%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 = 0;
+
+ 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);
+ pr_debug("%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;
+
+ pr_debug("%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) {
+ pr_err("%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) {
+ pr_info("%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;
+ }
+ }
+
+ pr_info("%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;
+
+ pr_info("%s: '%s' successfully initialized and connected\n",
+ KBUILD_MODNAME, d->name);
+
+ return;
+err_usb_driver_release_interface:
+ pr_info("%s: '%s' error while loading driver (%d)\n", KBUILD_MODNAME,
+ d->name, ret);
+ /* it finally calls disconnect() which frees mem */
+ usb_driver_release_interface(to_usb_driver(d->intf->dev.driver),
+ d->intf);
+ pr_debug("%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 dvb_usb_driver_info *driver_info =
+ (struct dvb_usb_driver_info *) id->driver_info;
+
+ pr_debug("%s: bInterfaceNumber=%d\n", __func__,
+ intf->cur_altsetting->desc.bInterfaceNumber);
+
+ if (!id->driver_info) {
+ pr_err("%s: driver_info failed\n", KBUILD_MODNAME);
+ ret = -ENODEV;
+ goto err;
+ }
+
+ d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL);
+ if (!d) {
+ pr_err("%s: kzalloc() failed\n", KBUILD_MODNAME);
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ d->name = driver_info->name;
+ d->rc_map = driver_info->rc_map;
+ d->udev = interface_to_usbdev(intf);
+ 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) {
+ pr_err("%s: schedule_work() failed\n", KBUILD_MODNAME);
+ goto err_kfree;
+ }
+
+ return 0;
+err_kfree:
+ kfree(d);
+err:
+ pr_debug("%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;
+
+ pr_debug("%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->disconnect)
+ d->props->disconnect(d);
+
+ name = d->name;
+ dvb_usbv2_exit(d);
+
+ pr_info("%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 i;
+
+ pr_debug("%s:\n", __func__);
+
+ /* stop remote controller poll */
+ if (d->rc.query && !d->rc.bulk_mode)
+ cancel_delayed_work_sync(&d->rc_query_work);
+
+ /* stop streaming */
+ for (i = MAX_NO_OF_ADAPTER_PER_DEVICE - 1; i >= 0; i--) {
+ if (d->adapter[i].dvb_adap.priv &&
+ d->adapter[i].active_fe != -1)
+ usb_urb_killv2(&d->adapter[i].stream);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(dvb_usbv2_suspend);
+
+int dvb_usbv2_resume(struct usb_interface *intf)
+{
+ struct dvb_usb_device *d = usb_get_intfdata(intf);
+ int i;
+
+ pr_debug("%s:\n", __func__);
+
+ /* start streaming */
+ for (i = 0; i < MAX_NO_OF_ADAPTER_PER_DEVICE; i++) {
+ if (d->adapter[i].dvb_adap.priv &&
+ d->adapter[i].active_fe != -1)
+ usb_urb_submitv2(&d->adapter[i].stream, NULL);
+ }
+
+ /* start remote controller poll */
+ if (d->rc.query && !d->rc.bulk_mode)
+ schedule_delayed_work(&d->rc_query_work,
+ msecs_to_jiffies(d->rc.interval));
+
+ return 0;
+}
+EXPORT_SYMBOL(dvb_usbv2_resume);
+
+MODULE_VERSION("1.0");
+MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
+MODULE_DESCRIPTION("A library module containing commonly used USB and DVB function USB DVB devices");
+MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * DVB USB library - provides a generic interface for a DVB USB device driver.
- *
- * dvb-usb-init.c
- *
- * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
- *
- * 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, version 2.
- *
- * see Documentation/dvb/README.dvb-usb for more information
- */
-#include "dvb_usb_common.h"
-#include <linux/usb/input.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;
-
- if (!d->props->download_firmware) {
- ret = -EINVAL;
- goto err;
- }
-
- ret = request_firmware(&fw, name, &d->udev->dev);
- if (ret < 0) {
- pr_err("%s: did not find the firmware file. (%s) " \
- "Please see linux/Documentation/dvb/ for " \
- "more details on firmware-problems. (%d)\n",
- KBUILD_MODNAME, name, ret);
- goto err;
- }
-
- pr_info("%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:
- pr_debug("%s: failed=%d\n", __func__, ret);
- return ret;
-}
-
-static int dvb_usbv2_i2c_init(struct dvb_usb_device *d)
-{
- int ret;
-
- pr_debug("%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;
- pr_err("%s: i2c_add_adapter() failed=%d\n", KBUILD_MODNAME,
- ret);
- goto err;
- }
-
- return 0;
-err:
- pr_debug("%s: failed=%d\n", __func__, ret);
- return ret;
-}
-
-static int dvb_usbv2_i2c_exit(struct dvb_usb_device *d)
-{
- pr_debug("%s:\n", __func__);
-
- if (d->i2c_adap.algo)
- i2c_del_adapter(&d->i2c_adap);
-
- return 0;
-}
-
-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;
-
- /* TODO: need a lock here. We can simply skip checking for the remote
- control if we're busy. */
-
- /* 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)
- return;
-
- ret = d->rc.query(d);
- if (ret < 0)
- pr_err("%s: error %d while querying for an remote control " \
- "event\n", KBUILD_MODNAME, ret);
-
- 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;
-
- pr_debug("%s:\n", __func__);
-
- if (dvb_usbv2_disable_rc_polling || !d->props->get_rc_config)
- return 0;
-
- ret = d->props->get_rc_config(d, &d->rc);
- if (ret < 0)
- goto err;
-
- dev = rc_allocate_device();
- if (!dev) {
- ret = -ENOMEM;
- goto err;
- }
-
- dev->dev.parent = &d->udev->dev;
- dev->input_name = "IR-receiver inside an USB DVB receiver";
- 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->driver_type = d->rc.driver_type;
- dev->allowed_protos = d->rc.allowed_protos;
- dev->change_protocol = d->rc.change_protocol;
- dev->priv = d;
- /* select used keymap */
- if (d->rc.map_name)
- dev->map_name = d->rc.map_name;
- else if (d->rc_map)
- dev->map_name = d->rc_map;
- else
- dev->map_name = RC_MAP_EMPTY; /* keep rc enabled */
-
- ret = rc_register_device(dev);
- if (ret < 0) {
- rc_free_device(dev);
- goto err;
- }
-
- d->input_dev = NULL;
- 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);
- pr_info("%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));
- }
-
- return 0;
-err:
- pr_debug("%s: failed=%d\n", __func__, ret);
- return ret;
-}
-
-static int dvb_usbv2_remote_exit(struct dvb_usb_device *d)
-{
- pr_debug("%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;
-}
-
-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)) {
- pr_err("%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)) {
- pr_info("%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 {
- pr_info("%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) {
- pr_info("%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;
-
- adap->dvb_adap.fe_ioctl_override = d->props->fe_ioctl_override;
- }
-
- return 0;
-err:
- pr_debug("%s: failed=%d\n", __func__, ret);
- return ret;
-}
-
-static int dvb_usbv2_adapter_exit(struct dvb_usb_device *d)
-{
- int i;
-
- pr_debug("%s:\n", __func__);
-
- for (i = MAX_NO_OF_ADAPTER_PER_DEVICE - 1; i >= 0; i--) {
- 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)
-{
- pr_debug("%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 = 0;
-
- 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);
- pr_debug("%s: failed=%d\n", __func__, ret);
- return ret;
-}
-
-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 */
- pr_debug("%s: power control=%d\n", __func__, onoff);
- if (d->props->power_ctrl) {
- ret = d->props->power_ctrl(d, onoff);
- goto err;
- }
- }
-
- return 0;
-err:
- pr_debug("%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;
-
- pr_debug("%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) {
- pr_err("%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) {
- pr_info("%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;
- }
- }
-
- pr_info("%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;
-
- pr_info("%s: '%s' successfully initialized and connected\n",
- KBUILD_MODNAME, d->name);
-
- return;
-err_usb_driver_release_interface:
- pr_info("%s: '%s' error while loading driver (%d)\n", KBUILD_MODNAME,
- d->name, ret);
- /* it finally calls disconnect() which frees mem */
- usb_driver_release_interface(to_usb_driver(d->intf->dev.driver),
- d->intf);
- pr_debug("%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 dvb_usb_driver_info *driver_info =
- (struct dvb_usb_driver_info *) id->driver_info;
-
- pr_debug("%s: bInterfaceNumber=%d\n", __func__,
- intf->cur_altsetting->desc.bInterfaceNumber);
-
- if (!id->driver_info) {
- pr_err("%s: driver_info failed\n", KBUILD_MODNAME);
- ret = -ENODEV;
- goto err;
- }
-
- d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL);
- if (!d) {
- pr_err("%s: kzalloc() failed\n", KBUILD_MODNAME);
- ret = -ENOMEM;
- goto err;
- }
-
- d->name = driver_info->name;
- d->rc_map = driver_info->rc_map;
- d->udev = interface_to_usbdev(intf);
- 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) {
- pr_err("%s: schedule_work() failed\n", KBUILD_MODNAME);
- goto err_kfree;
- }
-
- return 0;
-err_kfree:
- kfree(d);
-err:
- pr_debug("%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;
-
- pr_debug("%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->disconnect)
- d->props->disconnect(d);
-
- name = d->name;
- dvb_usbv2_exit(d);
-
- pr_info("%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 i;
-
- pr_debug("%s:\n", __func__);
-
- /* stop remote controller poll */
- if (d->rc.query && !d->rc.bulk_mode)
- cancel_delayed_work_sync(&d->rc_query_work);
-
- /* stop streaming */
- for (i = MAX_NO_OF_ADAPTER_PER_DEVICE - 1; i >= 0; i--) {
- if (d->adapter[i].dvb_adap.priv &&
- d->adapter[i].active_fe != -1)
- usb_urb_killv2(&d->adapter[i].stream);
- }
-
- return 0;
-}
-EXPORT_SYMBOL(dvb_usbv2_suspend);
-
-int dvb_usbv2_resume(struct usb_interface *intf)
-{
- struct dvb_usb_device *d = usb_get_intfdata(intf);
- int i;
-
- pr_debug("%s:\n", __func__);
-
- /* start streaming */
- for (i = 0; i < MAX_NO_OF_ADAPTER_PER_DEVICE; i++) {
- if (d->adapter[i].dvb_adap.priv &&
- d->adapter[i].active_fe != -1)
- usb_urb_submitv2(&d->adapter[i].stream, NULL);
- }
-
- /* start remote controller poll */
- if (d->rc.query && !d->rc.bulk_mode)
- schedule_delayed_work(&d->rc_query_work,
- msecs_to_jiffies(d->rc.interval));
-
- return 0;
-}
-EXPORT_SYMBOL(dvb_usbv2_resume);
-
-MODULE_VERSION("1.0");
-MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
-MODULE_DESCRIPTION("A library module containing commonly used USB and DVB function USB DVB devices");
-MODULE_LICENSE("GPL");
projects / firefly-linux-kernel-4.4.55.git / commitdiff