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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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/media/usb/au0828/au0828-cards.c
View File

@ -228,10 +228,6 @@ void au0828_card_analog_fe_setup(struct au0828_dev *dev)
"au8522", 0x8e >> 1, NULL);
if (sd == NULL)
pr_err("analog subdev registration failed\n");
#ifdef CONFIG_MEDIA_CONTROLLER
if (sd)
dev->decoder = &sd->entity;
#endif
}
/* Setup tuners */

52
drivers/media/usb/au0828/au0828-core.c
View File

@ -137,8 +137,14 @@ static void au0828_unregister_media_device(struct au0828_dev *dev)
#ifdef CONFIG_MEDIA_CONTROLLER
if (dev->media_dev &&
media_devnode_is_registered(&dev->media_dev->devnode)) {
/* clear enable_source, disable_source */
dev->media_dev->source_priv = NULL;
dev->media_dev->enable_source = NULL;
dev->media_dev->disable_source = NULL;
media_device_unregister(dev->media_dev);
media_device_cleanup(dev->media_dev);
kfree(dev->media_dev);
dev->media_dev = NULL;
}
#endif
@ -166,7 +172,7 @@ static void au0828_usb_disconnect(struct usb_interface *interface)
Set the status so poll routines can check and avoid
access after disconnect.
*/
dev->dev_state = DEV_DISCONNECTED;
set_bit(DEV_DISCONNECTED, &dev->dev_state);
au0828_rc_unregister(dev);
/* Digital TV */
@ -192,7 +198,7 @@ static int au0828_media_device_init(struct au0828_dev *dev,
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_device *mdev;
mdev = media_device_get_devres(&udev->dev);
mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
if (!mdev)
return -ENOMEM;
@ -456,7 +462,8 @@ static int au0828_media_device_register(struct au0828_dev *dev,
{
#ifdef CONFIG_MEDIA_CONTROLLER
int ret;
struct media_entity *entity, *demod = NULL, *tuner = NULL;
struct media_entity *entity, *demod = NULL;
struct media_link *link;
if (!dev->media_dev)
return 0;
@ -482,26 +489,37 @@ static int au0828_media_device_register(struct au0828_dev *dev,
}
/*
* Find tuner and demod to disable the link between
* the two to avoid disable step when tuner is requested
* by video or audio. Note that this step can't be done
* until dvb graph is created during dvb register.
* Find tuner, decoder and demod.
*
* The tuner and decoder should be cached, as they'll be used by
* au0828_enable_source.
*
* It also needs to disable the link between tuner and
* decoder/demod, to avoid disable step when tuner is requested
* by video or audio. Note that this step can't be done until dvb
* graph is created during dvb register.
*/
media_device_for_each_entity(entity, dev->media_dev) {
if (entity->function == MEDIA_ENT_F_DTV_DEMOD)
switch (entity->function) {
case MEDIA_ENT_F_TUNER:
dev->tuner = entity;
break;
case MEDIA_ENT_F_ATV_DECODER:
dev->decoder = entity;
break;
case MEDIA_ENT_F_DTV_DEMOD:
demod = entity;
else if (entity->function == MEDIA_ENT_F_TUNER)
tuner = entity;
break;
}
}
/* Disable link between tuner and demod */
if (tuner && demod) {
struct media_link *link;
list_for_each_entry(link, &demod->links, list) {
if (link->sink->entity == demod &&
link->source->entity == tuner) {
/* Disable link between tuner->demod and/or tuner->decoder */
if (dev->tuner) {
list_for_each_entry(link, &dev->tuner->links, list) {
if (demod && link->sink->entity == demod)
media_entity_setup_link(link, 0);
if (dev->decoder && link->sink->entity == dev->decoder)
media_entity_setup_link(link, 0);
}
}
}

4
drivers/media/usb/au0828/au0828-input.c
View File

@ -130,7 +130,7 @@ static int au0828_get_key_au8522(struct au0828_rc *ir)
bool first = true;
/* do nothing if device is disconnected */
if (ir->dev->dev_state == DEV_DISCONNECTED)
if (test_bit(DEV_DISCONNECTED, &ir->dev->dev_state))
return 0;
/* Check IR int */
@ -260,7 +260,7 @@ static void au0828_rc_stop(struct rc_dev *rc)
cancel_delayed_work_sync(&ir->work);
/* do nothing if device is disconnected */
if (ir->dev->dev_state != DEV_DISCONNECTED) {
if (!test_bit(DEV_DISCONNECTED, &ir->dev->dev_state)) {
/* Disable IR */
au8522_rc_clear(ir, 0xe0, 1 << 4);
}

63
drivers/media/usb/au0828/au0828-video.c
View File

@ -106,14 +106,13 @@ static inline void print_err_status(struct au0828_dev *dev,
static int check_dev(struct au0828_dev *dev)
{
if (dev->dev_state & DEV_DISCONNECTED) {
if (test_bit(DEV_DISCONNECTED, &dev->dev_state)) {
pr_info("v4l2 ioctl: device not present\n");
return -ENODEV;
}
if (dev->dev_state & DEV_MISCONFIGURED) {
pr_info("v4l2 ioctl: device is misconfigured; "
"close and open it again\n");
if (test_bit(DEV_MISCONFIGURED, &dev->dev_state)) {
pr_info("v4l2 ioctl: device is misconfigured; close and open it again\n");
return -EIO;
}
return 0;
@ -521,8 +520,8 @@ static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
if (!dev)
return 0;
if ((dev->dev_state & DEV_DISCONNECTED) ||
(dev->dev_state & DEV_MISCONFIGURED))
if (test_bit(DEV_DISCONNECTED, &dev->dev_state) ||
test_bit(DEV_MISCONFIGURED, &dev->dev_state))
return 0;
if (urb->status < 0) {
@ -824,10 +823,10 @@ static int au0828_stream_interrupt(struct au0828_dev *dev)
int ret = 0;
dev->stream_state = STREAM_INTERRUPT;
if (dev->dev_state == DEV_DISCONNECTED)
if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
return -ENODEV;
else if (ret) {
dev->dev_state = DEV_MISCONFIGURED;
set_bit(DEV_MISCONFIGURED, &dev->dev_state);
dprintk(1, "%s device is misconfigured!\n", __func__);
return ret;
}
@ -1026,7 +1025,7 @@ static int au0828_v4l2_open(struct file *filp)
int ret;
dprintk(1,
"%s called std_set %d dev_state %d stream users %d users %d\n",
"%s called std_set %d dev_state %ld stream users %d users %d\n",
__func__, dev->std_set_in_tuner_core, dev->dev_state,
dev->streaming_users, dev->users);
@ -1045,7 +1044,7 @@ static int au0828_v4l2_open(struct file *filp)
au0828_analog_stream_enable(dev);
au0828_analog_stream_reset(dev);
dev->stream_state = STREAM_OFF;
dev->dev_state |= DEV_INITIALIZED;
set_bit(DEV_INITIALIZED, &dev->dev_state);
}
dev->users++;
mutex_unlock(&dev->lock);
@ -1059,7 +1058,7 @@ static int au0828_v4l2_close(struct file *filp)
struct video_device *vdev = video_devdata(filp);
dprintk(1,
"%s called std_set %d dev_state %d stream users %d users %d\n",
"%s called std_set %d dev_state %ld stream users %d users %d\n",
__func__, dev->std_set_in_tuner_core, dev->dev_state,
dev->streaming_users, dev->users);
@ -1075,7 +1074,7 @@ static int au0828_v4l2_close(struct file *filp)
del_timer_sync(&dev->vbi_timeout);
}
if (dev->dev_state == DEV_DISCONNECTED)
if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
goto end;
if (dev->users == 1) {
@ -1135,7 +1134,7 @@ static void au0828_init_tuner(struct au0828_dev *dev)
.type = V4L2_TUNER_ANALOG_TV,
};
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
if (dev->std_set_in_tuner_core)
@ -1207,7 +1206,7 @@ static int vidioc_querycap(struct file *file, void *priv,
struct video_device *vdev = video_devdata(file);
struct au0828_dev *dev = video_drvdata(file);
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
strlcpy(cap->driver, "au0828", sizeof(cap->driver));
@ -1250,7 +1249,7 @@ static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
{
struct au0828_dev *dev = video_drvdata(file);
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
f->fmt.pix.width = dev->width;
@ -1269,7 +1268,7 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
{
struct au0828_dev *dev = video_drvdata(file);
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
@ -1281,7 +1280,7 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct au0828_dev *dev = video_drvdata(file);
int rc;
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
rc = check_dev(dev);
@ -1303,7 +1302,7 @@ static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
{
struct au0828_dev *dev = video_drvdata(file);
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
if (norm == dev->std)
@ -1335,7 +1334,7 @@ static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
{
struct au0828_dev *dev = video_drvdata(file);
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
*norm = dev->std;
@ -1357,7 +1356,7 @@ static int vidioc_enum_input(struct file *file, void *priv,
[AU0828_VMUX_DVB] = "DVB",
};
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
tmp = input->index;
@ -1387,7 +1386,7 @@ static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
struct au0828_dev *dev = video_drvdata(file);
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
*i = dev->ctrl_input;
@ -1398,7 +1397,7 @@ static void au0828_s_input(struct au0828_dev *dev, int index)
{
int i;
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
switch (AUVI_INPUT(index).type) {
@ -1496,7 +1495,7 @@ static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
{
struct au0828_dev *dev = video_drvdata(file);
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
a->index = dev->ctrl_ainput;
@ -1516,7 +1515,7 @@ static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio
if (a->index != dev->ctrl_ainput)
return -EINVAL;
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
return 0;
}
@ -1534,7 +1533,7 @@ static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
if (ret)
return ret;
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
strcpy(t->name, "Auvitek tuner");
@ -1554,7 +1553,7 @@ static int vidioc_s_tuner(struct file *file, void *priv,
if (t->index != 0)
return -EINVAL;
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
au0828_init_tuner(dev);
@ -1576,7 +1575,7 @@ static int vidioc_g_frequency(struct file *file, void *priv,
if (freq->tuner != 0)
return -EINVAL;
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
freq->frequency = dev->ctrl_freq;
return 0;
@ -1591,7 +1590,7 @@ static int vidioc_s_frequency(struct file *file, void *priv,
if (freq->tuner != 0)
return -EINVAL;
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
au0828_init_tuner(dev);
@ -1617,7 +1616,7 @@ static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
{
struct au0828_dev *dev = video_drvdata(file);
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
format->fmt.vbi.samples_per_line = dev->vbi_width;
@ -1643,7 +1642,7 @@ static int vidioc_cropcap(struct file *file, void *priv,
if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
cc->bounds.left = 0;
@ -1665,7 +1664,7 @@ static int vidioc_g_register(struct file *file, void *priv,
{
struct au0828_dev *dev = video_drvdata(file);
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
reg->val = au0828_read(dev, reg->reg);
@ -1678,7 +1677,7 @@ static int vidioc_s_register(struct file *file, void *priv,
{
struct au0828_dev *dev = video_drvdata(file);
dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
return au0828_writereg(dev, reg->reg, reg->val);

9
drivers/media/usb/au0828/au0828.h
View File

@ -21,6 +21,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/bitops.h>
#include <linux/usb.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
@ -121,9 +122,9 @@ enum au0828_stream_state {
/* device state */
enum au0828_dev_state {
DEV_INITIALIZED = 0x01,
DEV_DISCONNECTED = 0x02,
DEV_MISCONFIGURED = 0x04
DEV_INITIALIZED = 0,
DEV_DISCONNECTED = 1,
DEV_MISCONFIGURED = 2
};
struct au0828_dev;
@ -247,7 +248,7 @@ struct au0828_dev {
int input_type;
int std_set_in_tuner_core;
unsigned int ctrl_input;
enum au0828_dev_state dev_state;
long unsigned int dev_state; /* defined at enum au0828_dev_state */;
enum au0828_stream_state stream_state;
wait_queue_head_t open;

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 <tiwai@suse.de>");
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;
};