mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-24 10:37:45 +07:00
6cf5dad17e
Right now, media_device_pci_init and media_device_usb_init does media_device allocation internaly. That preents its usage when the media_device struct is embedded on some other structure. Move memory allocation outside it, to make it more generic. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
350 lines
9.2 KiB
C
350 lines
9.2 KiB
C
/* dvb-usb-dvb.c is part of the DVB USB library.
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*
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* Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@posteo.de)
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* see dvb-usb-init.c for copyright information.
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*
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* This file contains functions for initializing and handling the
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* linux-dvb API.
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*/
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#include "dvb-usb-common.h"
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#include <media/media-device.h>
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/* does the complete input transfer handling */
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static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
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{
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struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;
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int newfeedcount, ret;
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if (adap == NULL)
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return -ENODEV;
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if ((adap->active_fe < 0) ||
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(adap->active_fe >= adap->num_frontends_initialized)) {
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return -EINVAL;
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}
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newfeedcount = adap->feedcount + (onoff ? 1 : -1);
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/* stop feed before setting a new pid if there will be no pid anymore */
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if (newfeedcount == 0) {
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deb_ts("stop feeding\n");
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usb_urb_kill(&adap->fe_adap[adap->active_fe].stream);
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if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) {
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ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 0);
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if (ret < 0) {
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err("error while stopping stream.");
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return ret;
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}
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}
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}
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adap->feedcount = newfeedcount;
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/* activate the pid on the device specific pid_filter */
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deb_ts("setting pid (%s): %5d %04x at index %d '%s'\n",
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adap->fe_adap[adap->active_fe].pid_filtering ?
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"yes" : "no", dvbdmxfeed->pid, dvbdmxfeed->pid,
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dvbdmxfeed->index, onoff ? "on" : "off");
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if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER &&
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adap->fe_adap[adap->active_fe].pid_filtering &&
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adap->props.fe[adap->active_fe].pid_filter != NULL)
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adap->props.fe[adap->active_fe].pid_filter(adap, dvbdmxfeed->index, dvbdmxfeed->pid, onoff);
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/* start the feed if this was the first feed and there is still a feed
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* for reception.
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*/
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if (adap->feedcount == onoff && adap->feedcount > 0) {
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deb_ts("submitting all URBs\n");
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usb_urb_submit(&adap->fe_adap[adap->active_fe].stream);
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deb_ts("controlling pid parser\n");
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if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER &&
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adap->props.fe[adap->active_fe].caps &
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DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF &&
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adap->props.fe[adap->active_fe].pid_filter_ctrl != NULL) {
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ret = adap->props.fe[adap->active_fe].pid_filter_ctrl(adap,
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adap->fe_adap[adap->active_fe].pid_filtering);
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if (ret < 0) {
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err("could not handle pid_parser");
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return ret;
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}
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}
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deb_ts("start feeding\n");
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if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) {
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ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 1);
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if (ret < 0) {
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err("error while enabling fifo.");
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return ret;
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}
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}
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}
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return 0;
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}
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static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
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{
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deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid,
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dvbdmxfeed->type);
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return dvb_usb_ctrl_feed(dvbdmxfeed, 1);
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}
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static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
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{
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deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type);
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return dvb_usb_ctrl_feed(dvbdmxfeed, 0);
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}
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static int dvb_usb_media_device_init(struct dvb_usb_adapter *adap)
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{
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#ifdef CONFIG_MEDIA_CONTROLLER_DVB
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struct media_device *mdev;
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struct dvb_usb_device *d = adap->dev;
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struct usb_device *udev = d->udev;
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mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
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if (!mdev)
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return -ENOMEM;
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media_device_usb_init(mdev, udev, d->desc->name);
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dvb_register_media_controller(&adap->dvb_adap, mdev);
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dev_info(&d->udev->dev, "media controller created\n");
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#endif
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return 0;
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}
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static int dvb_usb_media_device_register(struct dvb_usb_adapter *adap)
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{
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#ifdef CONFIG_MEDIA_CONTROLLER_DVB
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return media_device_register(adap->dvb_adap.mdev);
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#else
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return 0;
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#endif
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}
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static void dvb_usb_media_device_unregister(struct dvb_usb_adapter *adap)
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{
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#ifdef CONFIG_MEDIA_CONTROLLER_DVB
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if (!adap->dvb_adap.mdev)
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return;
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media_device_unregister(adap->dvb_adap.mdev);
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media_device_cleanup(adap->dvb_adap.mdev);
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kfree(adap->dvb_adap.mdev);
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adap->dvb_adap.mdev = NULL;
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#endif
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}
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int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums)
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{
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int i;
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int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name,
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adap->dev->owner, &adap->dev->udev->dev,
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adapter_nums);
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if (ret < 0) {
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deb_info("dvb_register_adapter failed: error %d", ret);
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goto err;
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}
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adap->dvb_adap.priv = adap;
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ret = dvb_usb_media_device_init(adap);
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if (ret < 0) {
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deb_info("dvb_usb_media_device_init failed: error %d", ret);
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goto err_mc;
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}
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if (adap->dev->props.read_mac_address) {
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if (adap->dev->props.read_mac_address(adap->dev, adap->dvb_adap.proposed_mac) == 0)
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info("MAC address: %pM", adap->dvb_adap.proposed_mac);
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else
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err("MAC address reading failed.");
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}
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adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
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adap->demux.priv = adap;
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adap->demux.filternum = 0;
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for (i = 0; i < adap->props.num_frontends; i++) {
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if (adap->demux.filternum < adap->fe_adap[i].max_feed_count)
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adap->demux.filternum = adap->fe_adap[i].max_feed_count;
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}
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adap->demux.feednum = adap->demux.filternum;
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adap->demux.start_feed = dvb_usb_start_feed;
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adap->demux.stop_feed = dvb_usb_stop_feed;
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adap->demux.write_to_decoder = NULL;
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if ((ret = dvb_dmx_init(&adap->demux)) < 0) {
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err("dvb_dmx_init failed: error %d", ret);
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goto err_dmx;
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}
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adap->dmxdev.filternum = adap->demux.filternum;
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adap->dmxdev.demux = &adap->demux.dmx;
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adap->dmxdev.capabilities = 0;
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if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) {
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err("dvb_dmxdev_init failed: error %d", ret);
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goto err_dmx_dev;
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}
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if ((ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net,
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&adap->demux.dmx)) < 0) {
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err("dvb_net_init failed: error %d", ret);
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goto err_net_init;
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}
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adap->state |= DVB_USB_ADAP_STATE_DVB;
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return 0;
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err_net_init:
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dvb_dmxdev_release(&adap->dmxdev);
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err_dmx_dev:
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dvb_dmx_release(&adap->demux);
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err_dmx:
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dvb_usb_media_device_unregister(adap);
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err_mc:
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dvb_unregister_adapter(&adap->dvb_adap);
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err:
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return ret;
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}
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int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap)
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{
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if (adap->state & DVB_USB_ADAP_STATE_DVB) {
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deb_info("unregistering DVB part\n");
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dvb_net_release(&adap->dvb_net);
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adap->demux.dmx.close(&adap->demux.dmx);
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dvb_dmxdev_release(&adap->dmxdev);
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dvb_dmx_release(&adap->demux);
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dvb_usb_media_device_unregister(adap);
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dvb_unregister_adapter(&adap->dvb_adap);
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adap->state &= ~DVB_USB_ADAP_STATE_DVB;
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}
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return 0;
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}
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static int dvb_usb_set_active_fe(struct dvb_frontend *fe, int onoff)
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{
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struct dvb_usb_adapter *adap = fe->dvb->priv;
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int ret = (adap->props.frontend_ctrl) ?
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adap->props.frontend_ctrl(fe, onoff) : 0;
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if (ret < 0) {
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err("frontend_ctrl request failed");
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return ret;
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}
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if (onoff)
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adap->active_fe = fe->id;
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return 0;
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}
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static int dvb_usb_fe_wakeup(struct dvb_frontend *fe)
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{
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struct dvb_usb_adapter *adap = fe->dvb->priv;
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dvb_usb_device_power_ctrl(adap->dev, 1);
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dvb_usb_set_active_fe(fe, 1);
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if (adap->fe_adap[fe->id].fe_init)
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adap->fe_adap[fe->id].fe_init(fe);
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return 0;
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}
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static int dvb_usb_fe_sleep(struct dvb_frontend *fe)
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{
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struct dvb_usb_adapter *adap = fe->dvb->priv;
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if (adap->fe_adap[fe->id].fe_sleep)
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adap->fe_adap[fe->id].fe_sleep(fe);
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dvb_usb_set_active_fe(fe, 0);
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return dvb_usb_device_power_ctrl(adap->dev, 0);
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}
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int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
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{
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int ret, i;
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/* register all given adapter frontends */
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for (i = 0; i < adap->props.num_frontends; i++) {
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if (adap->props.fe[i].frontend_attach == NULL) {
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err("strange: '%s' #%d,%d "
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"doesn't want to attach a frontend.",
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adap->dev->desc->name, adap->id, i);
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return 0;
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}
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ret = adap->props.fe[i].frontend_attach(adap);
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if (ret || adap->fe_adap[i].fe == NULL) {
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/* only print error when there is no FE at all */
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if (i == 0)
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err("no frontend was attached by '%s'",
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adap->dev->desc->name);
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return 0;
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}
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adap->fe_adap[i].fe->id = i;
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/* re-assign sleep and wakeup functions */
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adap->fe_adap[i].fe_init = adap->fe_adap[i].fe->ops.init;
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adap->fe_adap[i].fe->ops.init = dvb_usb_fe_wakeup;
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adap->fe_adap[i].fe_sleep = adap->fe_adap[i].fe->ops.sleep;
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adap->fe_adap[i].fe->ops.sleep = dvb_usb_fe_sleep;
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if (dvb_register_frontend(&adap->dvb_adap, adap->fe_adap[i].fe)) {
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err("Frontend %d registration failed.", i);
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dvb_frontend_detach(adap->fe_adap[i].fe);
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adap->fe_adap[i].fe = NULL;
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/* In error case, do not try register more FEs,
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* still leaving already registered FEs alive. */
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if (i == 0)
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return -ENODEV;
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else
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return 0;
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}
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/* only attach the tuner if the demod is there */
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if (adap->props.fe[i].tuner_attach != NULL)
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adap->props.fe[i].tuner_attach(adap);
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adap->num_frontends_initialized++;
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}
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if (ret)
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return ret;
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ret = dvb_create_media_graph(&adap->dvb_adap, true);
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if (ret)
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return ret;
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ret = dvb_usb_media_device_register(adap);
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return ret;
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}
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int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap)
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{
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int i = adap->num_frontends_initialized - 1;
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/* unregister all given adapter frontends */
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for (; i >= 0; i--) {
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if (adap->fe_adap[i].fe != NULL) {
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dvb_unregister_frontend(adap->fe_adap[i].fe);
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dvb_frontend_detach(adap->fe_adap[i].fe);
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}
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}
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adap->num_frontends_initialized = 0;
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return 0;
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}
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