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-rw-r--r--sound/usb/media.c318
1 files changed, 0 insertions, 318 deletions
diff --git a/sound/usb/media.c b/sound/usb/media.c
deleted file mode 100644
index 93a50d01490c..000000000000
--- a/sound/usb/media.c
+++ /dev/null
@@ -1,318 +0,0 @@
-/*
- * media.c - Media Controller specific ALSA driver code
- *
- * Copyright (c) 2016 Shuah Khan <shuahkh@osg.samsung.com>
- * Copyright (c) 2016 Samsung Electronics Co., Ltd.
- *
- * This file is released under the GPLv2.
- */
-
-/*
- * This file adds Media Controller support to ALSA driver
- * to use the Media Controller API to share tuner with DVB
- * and V4L2 drivers that control media device. Media device
- * is created based on existing quirks framework. Using this
- * approach, the media controller API usage can be added for
- * a specific device.
-*/
-
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/usb.h>
-
-#include <sound/pcm.h>
-#include <sound/core.h>
-
-#include "usbaudio.h"
-#include "card.h"
-#include "mixer.h"
-#include "media.h"
-
-static int media_snd_enable_source(struct media_ctl *mctl)
-{
- if (mctl && mctl->media_dev->enable_source)
- return mctl->media_dev->enable_source(&mctl->media_entity,
- &mctl->media_pipe);
- return 0;
-}
-
-static void media_snd_disable_source(struct media_ctl *mctl)
-{
- if (mctl && mctl->media_dev->disable_source)
- mctl->media_dev->disable_source(&mctl->media_entity);
-}
-
-int media_snd_stream_init(struct snd_usb_substream *subs, struct snd_pcm *pcm,
- int stream)
-{
- struct media_device *mdev;
- struct media_ctl *mctl;
- struct device *pcm_dev = &pcm->streams[stream].dev;
- u32 intf_type;
- int ret = 0;
- u16 mixer_pad;
- struct media_entity *entity;
-
- mdev = subs->stream->chip->media_dev;
- if (!mdev)
- return -ENODEV;
-
- if (subs->media_ctl)
- return 0;
-
- /* allocate media_ctl */
- mctl = kzalloc(sizeof(*mctl), GFP_KERNEL);
- if (!mctl)
- return -ENOMEM;
-
- mctl->media_dev = mdev;
- if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
- intf_type = MEDIA_INTF_T_ALSA_PCM_PLAYBACK;
- mctl->media_entity.function = MEDIA_ENT_F_AUDIO_PLAYBACK;
- mctl->media_pad.flags = MEDIA_PAD_FL_SOURCE;
- mixer_pad = 1;
- } else {
- intf_type = MEDIA_INTF_T_ALSA_PCM_CAPTURE;
- mctl->media_entity.function = MEDIA_ENT_F_AUDIO_CAPTURE;
- mctl->media_pad.flags = MEDIA_PAD_FL_SINK;
- mixer_pad = 2;
- }
- mctl->media_entity.name = pcm->name;
- media_entity_pads_init(&mctl->media_entity, 1, &mctl->media_pad);
- ret = media_device_register_entity(mctl->media_dev,
- &mctl->media_entity);
- if (ret)
- goto free_mctl;
-
- mctl->intf_devnode = media_devnode_create(mdev, intf_type, 0,
- MAJOR(pcm_dev->devt),
- MINOR(pcm_dev->devt));
- if (!mctl->intf_devnode) {
- ret = -ENOMEM;
- goto unregister_entity;
- }
- mctl->intf_link = media_create_intf_link(&mctl->media_entity,
- &mctl->intf_devnode->intf,
- MEDIA_LNK_FL_ENABLED);
- if (!mctl->intf_link) {
- ret = -ENOMEM;
- goto devnode_remove;
- }
-
- /* create link between mixer and audio */
- media_device_for_each_entity(entity, mdev) {
- switch (entity->function) {
- case MEDIA_ENT_F_AUDIO_MIXER:
- ret = media_create_pad_link(entity, mixer_pad,
- &mctl->media_entity, 0,
- MEDIA_LNK_FL_ENABLED);
- if (ret)
- goto remove_intf_link;
- break;
- }
- }
-
- subs->media_ctl = mctl;
- return 0;
-
-remove_intf_link:
- media_remove_intf_link(mctl->intf_link);
-devnode_remove:
- media_devnode_remove(mctl->intf_devnode);
-unregister_entity:
- media_device_unregister_entity(&mctl->media_entity);
-free_mctl:
- kfree(mctl);
- return ret;
-}
-
-void media_snd_stream_delete(struct snd_usb_substream *subs)
-{
- struct media_ctl *mctl = subs->media_ctl;
-
- if (mctl && mctl->media_dev) {
- struct media_device *mdev;
-
- mdev = subs->stream->chip->media_dev;
- if (mdev && media_devnode_is_registered(&mdev->devnode)) {
- media_devnode_remove(mctl->intf_devnode);
- media_device_unregister_entity(&mctl->media_entity);
- media_entity_cleanup(&mctl->media_entity);
- }
- kfree(mctl);
- subs->media_ctl = NULL;
- }
-}
-
-int media_snd_start_pipeline(struct snd_usb_substream *subs)
-{
- struct media_ctl *mctl = subs->media_ctl;
-
- if (mctl)
- return media_snd_enable_source(mctl);
- return 0;
-}
-
-void media_snd_stop_pipeline(struct snd_usb_substream *subs)
-{
- struct media_ctl *mctl = subs->media_ctl;
-
- if (mctl)
- media_snd_disable_source(mctl);
-}
-
-int media_snd_mixer_init(struct snd_usb_audio *chip)
-{
- struct device *ctl_dev = &chip->card->ctl_dev;
- struct media_intf_devnode *ctl_intf;
- struct usb_mixer_interface *mixer;
- struct media_device *mdev = chip->media_dev;
- struct media_mixer_ctl *mctl;
- u32 intf_type = MEDIA_INTF_T_ALSA_CONTROL;
- int ret;
-
- if (!mdev)
- return -ENODEV;
-
- ctl_intf = chip->ctl_intf_media_devnode;
- if (!ctl_intf) {
- ctl_intf = media_devnode_create(mdev, intf_type, 0,
- MAJOR(ctl_dev->devt),
- MINOR(ctl_dev->devt));
- if (!ctl_intf)
- return -ENOMEM;
- chip->ctl_intf_media_devnode = ctl_intf;
- }
-
- list_for_each_entry(mixer, &chip->mixer_list, list) {
-
- if (mixer->media_mixer_ctl)
- continue;
-
- /* allocate media_mixer_ctl */
- mctl = kzalloc(sizeof(*mctl), GFP_KERNEL);
- if (!mctl)
- return -ENOMEM;
-
- mctl->media_dev = mdev;
- mctl->media_entity.function = MEDIA_ENT_F_AUDIO_MIXER;
- mctl->media_entity.name = chip->card->mixername;
- mctl->media_pad[0].flags = MEDIA_PAD_FL_SINK;
- mctl->media_pad[1].flags = MEDIA_PAD_FL_SOURCE;
- mctl->media_pad[2].flags = MEDIA_PAD_FL_SOURCE;
- media_entity_pads_init(&mctl->media_entity, MEDIA_MIXER_PAD_MAX,
- mctl->media_pad);
- ret = media_device_register_entity(mctl->media_dev,
- &mctl->media_entity);
- if (ret) {
- kfree(mctl);
- return ret;
- }
-
- mctl->intf_link = media_create_intf_link(&mctl->media_entity,
- &ctl_intf->intf,
- MEDIA_LNK_FL_ENABLED);
- if (!mctl->intf_link) {
- media_device_unregister_entity(&mctl->media_entity);
- media_entity_cleanup(&mctl->media_entity);
- kfree(mctl);
- return -ENOMEM;
- }
- mctl->intf_devnode = ctl_intf;
- mixer->media_mixer_ctl = mctl;
- }
- return 0;
-}
-
-static void media_snd_mixer_delete(struct snd_usb_audio *chip)
-{
- struct usb_mixer_interface *mixer;
- struct media_device *mdev = chip->media_dev;
-
- if (!mdev)
- return;
-
- list_for_each_entry(mixer, &chip->mixer_list, list) {
- struct media_mixer_ctl *mctl;
-
- mctl = mixer->media_mixer_ctl;
- if (!mixer->media_mixer_ctl)
- continue;
-
- if (media_devnode_is_registered(&mdev->devnode)) {
- media_device_unregister_entity(&mctl->media_entity);
- media_entity_cleanup(&mctl->media_entity);
- }
- kfree(mctl);
- mixer->media_mixer_ctl = NULL;
- }
- if (media_devnode_is_registered(&mdev->devnode))
- media_devnode_remove(chip->ctl_intf_media_devnode);
- chip->ctl_intf_media_devnode = NULL;
-}
-
-int media_snd_device_create(struct snd_usb_audio *chip,
- struct usb_interface *iface)
-{
- struct media_device *mdev;
- struct usb_device *usbdev = interface_to_usbdev(iface);
- int ret;
-
- mdev = media_device_get_devres(&usbdev->dev);
- if (!mdev)
- return -ENOMEM;
- if (!mdev->dev) {
- /* register media device */
- mdev->dev = &usbdev->dev;
- if (usbdev->product)
- strlcpy(mdev->model, usbdev->product,
- sizeof(mdev->model));
- if (usbdev->serial)
- strlcpy(mdev->serial, usbdev->serial,
- sizeof(mdev->serial));
- strcpy(mdev->bus_info, usbdev->devpath);
- mdev->hw_revision = le16_to_cpu(usbdev->descriptor.bcdDevice);
- media_device_init(mdev);
- }
- if (!media_devnode_is_registered(&mdev->devnode)) {
- ret = media_device_register(mdev);
- if (ret) {
- dev_err(&usbdev->dev,
- "Couldn't register media device. Error: %d\n",
- ret);
- return ret;
- }
- }
-
- /* save media device - avoid lookups */
- chip->media_dev = mdev;
-
- /* Create media entities for mixer and control dev */
- ret = media_snd_mixer_init(chip);
- if (ret) {
- dev_err(&usbdev->dev,
- "Couldn't create media mixer entities. Error: %d\n",
- ret);
-
- /* clear saved media_dev */
- chip->media_dev = NULL;
-
- return ret;
- }
- return 0;
-}
-
-void media_snd_device_delete(struct snd_usb_audio *chip)
-{
- struct media_device *mdev = chip->media_dev;
-
- media_snd_mixer_delete(chip);
-
- if (mdev) {
- if (media_devnode_is_registered(&mdev->devnode))
- media_device_unregister(mdev);
- chip->media_dev = NULL;
- }
-}