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media fixes for v4.6-rc2

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Merge tag 'media/v4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:
 "Some bug fixes on au0828 and snd-usb-audio:

   - the au0828+snd-usb-audio MC patch broke several things and produced
     some race conditions.  Better to revert the patches, and re-work on
     them for a next version

   - fix a regression at tuner disable links logic

   - properly handle dev_state as a bitmask"

* tag 'media/v4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] Revert "[media] media: au0828 change to use Managed Media Controller API"
  [media] Revert "[media] sound/usb: Use Media Controller API to share media resources"
  [media] au0828: Fix dev_state handling
  [media] au0828: fix au0828_v4l2_close() dev_state race condition
  [media] media: au0828 fix to clear enable/disable/change source handlers
  [media] v4l2-mc: cleanup a warning
  [media] au0828: disable tuner links and cache tuner/decoder
This commit is contained in:
Linus Torvalds 2016-04-05 06:47:50 -07:00
commit 62d2def9a5
16 changed files with 78 additions and 507 deletions
Download patch file Download diff file Expand all files Collapse all files

4
sound/usb/Kconfig
View file

@ -15,7 +15,6 @@ config SND_USB_AUDIO
select SND_RAWMIDI
select SND_PCM
select BITREVERSE
select SND_USB_AUDIO_USE_MEDIA_CONTROLLER if MEDIA_CONTROLLER && (MEDIA_SUPPORT=y || MEDIA_SUPPORT=SND_USB_AUDIO)
help
Say Y here to include support for USB audio and USB MIDI
devices.
@ -23,9 +22,6 @@ config SND_USB_AUDIO
To compile this driver as a module, choose M here: the module
will be called snd-usb-audio.
config SND_USB_AUDIO_USE_MEDIA_CONTROLLER
bool
config SND_USB_UA101
tristate "Edirol UA-101/UA-1000 driver"
select SND_PCM

2
sound/usb/Makefile
View file

@ -15,8 +15,6 @@ snd-usb-audio-objs := card.o \
quirks.o \
stream.o
snd-usb-audio-$(CONFIG_SND_USB_AUDIO_USE_MEDIA_CONTROLLER) += media.o
snd-usbmidi-lib-objs := midi.o
# Toplevel Module Dependency

14
sound/usb/card.c
View file

@ -66,7 +66,6 @@
#include "format.h"
#include "power.h"
#include "stream.h"
#include "media.h"
MODULE_AUTHOR("Takashi Iwai <[email protected]>");
MODULE_DESCRIPTION("USB Audio");
@ -612,11 +611,6 @@ static int usb_audio_probe(struct usb_interface *intf,
if (err < 0)
goto __error;
if (quirk->media_device) {
/* don't want to fail when media_snd_device_create() fails */
media_snd_device_create(chip, intf);
}
usb_chip[chip->index] = chip;
chip->num_interfaces++;
usb_set_intfdata(intf, chip);
@ -673,14 +667,6 @@ static void usb_audio_disconnect(struct usb_interface *intf)
list_for_each(p, &chip->midi_list) {
snd_usbmidi_disconnect(p);
}
/*
* Nice to check quirk && quirk->media_device
* need some special handlings. Doesn't look like
* we have access to quirk here
* Acceses mixer_list
*/
media_snd_device_delete(chip);
/* release mixer resources */
list_for_each_entry(mixer, &chip->mixer_list, list) {
snd_usb_mixer_disconnect(mixer);

3
sound/usb/card.h
View file

@ -105,8 +105,6 @@ struct snd_usb_endpoint {
struct list_head list;
};
struct media_ctl;
struct snd_usb_substream {
struct snd_usb_stream *stream;
struct usb_device *dev;
@ -158,7 +156,6 @@ struct snd_usb_substream {
} dsd_dop;
bool trigger_tstamp_pending_update; /* trigger timestamp being updated from initial estimate */
struct media_ctl *media_ctl;
};
struct snd_usb_stream {

318
sound/usb/media.c
View file

@ -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;
}
}

72
sound/usb/media.h
View file

@ -1,72 +0,0 @@
/*
* media.h - 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.
*/
#ifndef __MEDIA_H
#ifdef CONFIG_SND_USB_AUDIO_USE_MEDIA_CONTROLLER
#include <media/media-device.h>
#include <media/media-entity.h>
#include <sound/asound.h>
struct media_ctl {
struct media_device *media_dev;
struct media_entity media_entity;
struct media_intf_devnode *intf_devnode;
struct media_link *intf_link;
struct media_pad media_pad;
struct media_pipeline media_pipe;
};
/*
* One source pad each for SNDRV_PCM_STREAM_CAPTURE and
* SNDRV_PCM_STREAM_PLAYBACK. One for sink pad to link
* to AUDIO Source
*/
#define MEDIA_MIXER_PAD_MAX (SNDRV_PCM_STREAM_LAST + 2)
struct media_mixer_ctl {
struct media_device *media_dev;
struct media_entity media_entity;
struct media_intf_devnode *intf_devnode;
struct media_link *intf_link;
struct media_pad media_pad[MEDIA_MIXER_PAD_MAX];
struct media_pipeline media_pipe;
};
int media_snd_device_create(struct snd_usb_audio *chip,
struct usb_interface *iface);
void media_snd_device_delete(struct snd_usb_audio *chip);
int media_snd_stream_init(struct snd_usb_substream *subs, struct snd_pcm *pcm,
int stream);
void media_snd_stream_delete(struct snd_usb_substream *subs);
int media_snd_start_pipeline(struct snd_usb_substream *subs);
void media_snd_stop_pipeline(struct snd_usb_substream *subs);
#else
static inline int media_snd_device_create(struct snd_usb_audio *chip,
struct usb_interface *iface)
{ return 0; }
static inline void media_snd_device_delete(struct snd_usb_audio *chip) { }
static inline int media_snd_stream_init(struct snd_usb_substream *subs,
struct snd_pcm *pcm, int stream)
{ return 0; }
static inline void media_snd_stream_delete(struct snd_usb_substream *subs) { }
static inline int media_snd_start_pipeline(struct snd_usb_substream *subs)
{ return 0; }
static inline void media_snd_stop_pipeline(struct snd_usb_substream *subs) { }
#endif
#endif /* __MEDIA_H */

3
sound/usb/mixer.h
View file

@ -3,8 +3,6 @@
#include <sound/info.h>
struct media_mixer_ctl;
struct usb_mixer_interface {
struct snd_usb_audio *chip;
struct usb_host_interface *hostif;
@ -24,7 +22,6 @@ struct usb_mixer_interface {
struct urb *rc_urb;
struct usb_ctrlrequest *rc_setup_packet;
u8 rc_buffer[6];
struct media_mixer_ctl *media_mixer_ctl;
};
#define MAX_CHANNELS 16 /* max logical channels */

28
sound/usb/pcm.c
View file

@ -35,7 +35,6 @@
#include "pcm.h"
#include "clock.h"
#include "power.h"
#include "media.h"
#define SUBSTREAM_FLAG_DATA_EP_STARTED 0
#define SUBSTREAM_FLAG_SYNC_EP_STARTED 1
@ -718,14 +717,10 @@ static int snd_usb_hw_params(struct snd_pcm_substream *substream,
struct audioformat *fmt;
int ret;
ret = media_snd_start_pipeline(subs);
if (ret)
return ret;
ret = snd_pcm_lib_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
if (ret < 0)
goto err_ret;
return ret;
subs->pcm_format = params_format(hw_params);
subs->period_bytes = params_period_bytes(hw_params);
@ -739,27 +734,22 @@ static int snd_usb_hw_params(struct snd_pcm_substream *substream,
dev_dbg(&subs->dev->dev,
"cannot set format: format = %#x, rate = %d, channels = %d\n",
subs->pcm_format, subs->cur_rate, subs->channels);
ret = -EINVAL;
goto err_ret;
return -EINVAL;
}
ret = snd_usb_lock_shutdown(subs->stream->chip);
if (ret < 0)
goto err_ret;
return ret;
ret = set_format(subs, fmt);
snd_usb_unlock_shutdown(subs->stream->chip);
if (ret < 0)
goto err_ret;
return ret;
subs->interface = fmt->iface;
subs->altset_idx = fmt->altset_idx;
subs->need_setup_ep = true;
return 0;
err_ret:
media_snd_stop_pipeline(subs);
return ret;
}
/*
@ -771,7 +761,6 @@ static int snd_usb_hw_free(struct snd_pcm_substream *substream)
{
struct snd_usb_substream *subs = substream->runtime->private_data;
media_snd_stop_pipeline(subs);
subs->cur_audiofmt = NULL;
subs->cur_rate = 0;
subs->period_bytes = 0;
@ -1232,7 +1221,6 @@ static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction)
struct snd_usb_stream *as = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_usb_substream *subs = &as->substream[direction];
int ret;
subs->interface = -1;
subs->altset_idx = 0;
@ -1246,12 +1234,7 @@ static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction)
subs->dsd_dop.channel = 0;
subs->dsd_dop.marker = 1;
ret = setup_hw_info(runtime, subs);
if (ret == 0)
ret = media_snd_stream_init(subs, as->pcm, direction);
if (ret)
snd_usb_autosuspend(subs->stream->chip);
return ret;
return setup_hw_info(runtime, subs);
}
static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction)
@ -1260,7 +1243,6 @@ static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction)
struct snd_usb_substream *subs = &as->substream[direction];
stop_endpoints(subs, true);
media_snd_stop_pipeline(subs);
if (subs->interface >= 0 &&
!snd_usb_lock_shutdown(subs->stream->chip)) {

1
sound/usb/quirks-table.h
View file

@ -2886,7 +2886,6 @@ YAMAHA_DEVICE(0x7010, "UB99"),
.product_name = pname, \
.ifnum = QUIRK_ANY_INTERFACE, \
.type = QUIRK_AUDIO_ALIGN_TRANSFER, \
.media_device = 1, \
} \
}

2
sound/usb/stream.c
View file

@ -36,7 +36,6 @@
#include "format.h"
#include "clock.h"
#include "stream.h"
#include "media.h"
/*
* free a substream
@ -53,7 +52,6 @@ static void free_substream(struct snd_usb_substream *subs)
kfree(fp);
}
kfree(subs->rate_list.list);
media_snd_stream_delete(subs);
}

6
sound/usb/usbaudio.h
View file

@ -30,9 +30,6 @@
*
*/
struct media_device;
struct media_intf_devnode;
struct snd_usb_audio {
int index;
struct usb_device *dev;
@ -63,8 +60,6 @@ struct snd_usb_audio {
bool autoclock; /* from the 'autoclock' module param */
struct usb_host_interface *ctrl_intf; /* the audio control interface */
struct media_device *media_dev;
struct media_intf_devnode *ctl_intf_media_devnode;
};
#define usb_audio_err(chip, fmt, args...) \
@ -115,7 +110,6 @@ struct snd_usb_audio_quirk {
const char *product_name;
int16_t ifnum;
uint16_t type;
bool media_device;
const void *data;
};