So far, the hda_codec object kept the hda_pcm list in an array, and
the codec driver was expected to assign the array.  However, this
makes the object life cycle management harder, because the assigned
array is freed at the codec driver detach while it might be still
accessed by the opened streams.

In this patch, we allocate each hda_pcm object dynamically and manage
it as a linked list.  Each object has a kref refcount, and both the
codec driver binder and the PCM open/close touches it, so that the
object won't be freed while in use.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The memory allocators should have already given the kernel warning
messages, thus we don't have to annoy again.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Allow the codec object to have an individual card pointer.  Not only
this simplifies the redirections in many places, also this will allow
us to make each codec assigned to a different card object.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

snd_hda_build_pcms() does actually three things: let the codec driver
build up hda_pcm list, set the PCM default values, and call the
attach_pcm bus ops for each hda_pcm instance.  The former two are
basically independent from the bus implementation, so it'd make the
code a bit more readable.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

We leave the pcm field of struct hda_pcm at removal of each device, so
far.  This hasn't been a problem since unbinding the codec driver
isn't supposed to happen and another route via snd_hda_codec_reset()
clears all the once.  However, for a proper unbind implementation, we
need to care about it.

This patch does the thing above properly:

- Include struct hda_pcm pointer instead of struct hda_pcm_stream
  pointers in struct azx_dev.  This allows us to point the hda_pcm
  object at dev_free callback.

- Introduce to_hda_pcm_stream() macro for better readability.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

They are no longer used, let's kill them.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Set the card device as the parent like other sound devices instead of
leaving it empty.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

So far, we let the controller driver power down the all codecs at the
end of probe.  But this can be done better in the codec's dev_register
callback.  This results in the reduction of duplicated codes in each
control driver.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Now the final bit of runtime PM cleanup: instead of manual
notification of the power up/down of the codec via hda_bus pm_notify
ops, use the standard runtime PM feature.

The child codec device will kick off the runtime PM of the parent
(PCI) device upon suspend/resume automatically.  For managing whether
the link can be really turned off, we use the bit flags
bus->codec_powered instead of the earlier bus->power_keep_link_on.
flag.  Each codec driver is responsible to set/clear the bit flag, and
the controller device can be turned off only when all these bits are
cleared.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

We used to pass the power_save option value to hda_bus via a given
pointer.  This was needed to refer to the value from the HD-audio core
side.  However, after the transition to the runtime PM, this is no
longer needed.

This patch drops the power_save value indirection in hda_bus above,
and let the controller driver reprograms the autosuspend value
explicitly by a new helper, snd_hda_set_power_save().  Without this
call, the HD-audio core doesn't set up the autosuspend and flip the
runtime PM.  (User may still be able to set up via sysfs, though.)

Along with this change, the pointer argument of azx_bus_create() is
dropped as well.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Like the previous transition of suspend/resume, now move the
power-save code to the standard runtime PM.  As usual for runtime PM,
it's a bit tricky, but this simplified codes a lot in the end.

For keeping the usage compatibility, power_save module option still
controls the whole power-saving behavior on all codecs.  The value is
translated to pm_runtime_*_autosuspend() and pm_runtime_allow() /
pm_runtime_forbid() calls.

snd_hda_power_up() and snd_hda_power_down() are translated to
pm_runtime_get_sync() and pm_runtime_put_autosuspend(), respectively.
Since we can do call pm_runtime_get_sync() more reliably, the sync
version is used always and snd_hda_power_up_d3wait() is dropped.
Another slight difference is that snd_hda_power_up()/down() don't call
runtime_pm code during the suspend/resume transition phase.  Calling
them there isn't safe unlike our own code, resulted in unexpected
behavior (endless wakeups).

The hda_power_count tracepoint was removed, as it doesn't match well
with the new code.

Last but not least, we need to set ignore_children flag in the parent
dev.power field so that the runtime PM of the controller chip won't
get confused.  The notification is still done in the bus pm_notify
callback.  We'll get rid of this hack in the later patch.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This patch moves the suspend/resume mechanisms down to each codec
driver level, as we have a proper codec driver bound on the bus now.
Then we get the asynchronous PM gratis without fiddling much in the
driver level.

As a soft-landing transition, implement the common suspend/resume pm
ops for hda_codec_driver and keep the each codec driver intact.  Only
the callers of suspend/resume in the controller side (azx_suspend()
and azx_resume()) are removed.

Another involved place is azx_bus_reset() calling the temporary
suspend and resume as a hackish method of bus reset.  The HD-audio
core provide a helper function snd_hda_bus_reset() instead.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Now we create the standard HD-audio bus (/sys/bus/hdaudio), and bind
the codec driver with the codec device over there.  This is the first
step of the whole transition so that the changes to each codec driver
are kept as minimal as possible.

Each codec driver needs to register hda_codec_driver struct containing
the currently existing preset via the new helper macro
module_hda_codec_driver().  The old hda_codec_preset_list is replaced
with this infrastructure.  The generic parsers (for HDMI and other)
are also included in the preset with the special IDs to bind
uniquely.

In HD-audio core side, the device binding code is split to
hda_bind.c.  It provides the snd_hda_bus_type implementation to match
the codec driver with the given codec vendor ID.  It also manages the
module auto-loading by itself like before: when the matching isn't
found, it tries to probe the corresponding codec modules, and finally
falls back to the generic drivers.  (The special ID mentioned above is
set at this stage.)

The only visible change to outside is that the hdaudio sysfs entry now
appears in /sys/bus/devices, not as a sound class device.

More works to move the suspend/resume and remove ops will be
(hopefully) done in later patches.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This is a preliminary patch for the hda_bus implementation, removing
the parent device setup to codec device.  Since the bus and the class
devices can't be crossed over, leave the sound devices to the default
parent device as is.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

BIOS doesn't seem to set up pins for 5.1 and the SPDIF out, so we need
to give explicitly here.
Reported-and-tested-by: NMisan Thropos <misanthropos@gmx.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

No real functional change, only take wall clock and system time
in same routine and add accuracy report.
Signed-off-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

When the mixer amp is touched by control elements, we don't have to
power up always; if the codec was suspended at the time, we can just
update the amp cache and it's reflected to the hardware upon resume.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

azx_create_codec() function does actually two things: create a bus and
probe codecs.  For the future work, split this to two logical
functions, azx_bus_create() and azx_probe_codecs().
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

It's just an indirection, so let the caller directly calling
snd_hda_build_controls().
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

There is no big reason to keep them separately.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

For making the debugging of runtime PM easier, introduce
azx_has_pm_runtime() and use it in all places checking the runtime pm
driver capability.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

There is no big merit to handle hda_bus_unsolicited object
individually, as it's tightly coupled with the hda_bus object itself.
Embedding it makes the code simpler in the end.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Instead of copying from the given template, let the caller fills the
fields after creation.  This simplifies the code after all.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This commit removes code duplication between
snd_hdspm_{capture,playback}_ops. No semantic changes intended, this is
purely cosmetic.
Signed-off-by: NAdrian Knoth <aknoth@google.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This commit removes code duplication between
snd_hdspm_{capture,playback}_release. No semantic changes intended, this
is purely cosmetic.
Signed-off-by: NAdrian Knoth <aknoth@google.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This commit removes code duplication between
snd_hdspm_{capture,playback}_open. No semantic changes intended, this is
purely cosmetic.
Signed-off-by: NAdrian Knoth <aknoth@google.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Signed-off-by: NEliot Blennerhassett <eliot@blennerhassett.gen.nz>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

RME RayDAT and AIO use a fixed buffer size of 16384 samples. With period
sizes of 32-4096, this translates to 4-512 periods.

The older RME cards have a variable buffer size but require exactly two
periods.

This patch enforces nperiods=2 on those cards.
Signed-off-by: NAdrian Knoth <adi@drcomp.erfurt.thur.de>
Cc: <stable@vger.kernel.org> # 2.6.39+
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Otherwise, the mute led can't work at all.
Tested-by: NTaihsiang Ho <taihsiang.ho@canonical.com>
Cc: <stable@vger.kernel.org>
BugLink: https://bugs.launchpad.net/bugs/1410704Signed-off-by: NHui Wang <hui.wang@canonical.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This patch moves the driver object initialization and allocation to
each driver's module init/exit code like other normal drivers.  The
snd_seq_driver struct is now published in seq_device.h, and each
driver is responsible to define it with proper driver attributes
(name, probe and remove) with snd_seq_driver specific attributes as id
and argsize fields.  The helper functions snd_seq_driver_register(),
snd_seq_driver_unregister() and module_snd_seq_driver() are used for
simplifying codes.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

BugLink: https://bugs.launchpad.net/bugs/1412800Signed-off-by: NTienFu Chen <tienfu.chen@canonical.com>
Signed-off-by: NDavid Henningsson <david.henningsson@canonical.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Make sure wallclock counter and trigger timestamp are read very
close to each other for better alignment.
Signed-off-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The problem here is that we check:

	if (dev >= SNDRV_CARDS)

Then we increment "dev".

       if (!joystick_port[dev++])

Then we use it as an offset into a array with SNDRV_CARDS elements.

	if (!request_region(joystick_port[dev], 8, "Riptide gameport")) {

This has 3 effects:
1) If you use the module option to specify the joystick port then it has
   to be shifted one space over.
2) The wrong error message will be printed on failure if you have over
   32 cards.
3) Static checkers will correctly complain that are off by one.

Fixes: db1005ec ('ALSA: riptide - Fix joystick resource handling')
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Toshiba Satellite S50D laptop with an IDT codec uses the GPIO4 (0x10)
as the master EAPD.

Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=915858
Cc: <stable@vger.kernel.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Like previous patches, at this time we embed the struct device into
PCM object.  However, this needs a bit more caution: struct snd_pcm
doesn't own one device but two, for both playback and capture!  Thus
not struct snd_pcm but struct snd_pcm_str object contains the device.

Along with this change, pcm->dev field is dropped for avoiding
confusion.  It was meant to point to a non-standard parent.  But,
since now we can touch each struct device directly, we can manipulate
the parent field easily there, too.
Reviewed-by: NJaroslav Kysela <perex@perex.cz>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Like the previous patch, this one embeds the device object into hwdep
object.  For a proper object lifecycle, it's freed in the release
callback.

This also allows us to create sysfs entries via passing to the groups
field of the device without explicit function calls.  Since each
driver can see the device and touch its groups field directly, we
don't need to delegate in hwdep core any longer.  So, remove the
groups field from snd_hwdep, and let the user (in this case only
hda_hwdep.c) modify the device groups.
Reviewed-by: NJaroslav Kysela <perex@perex.cz>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Define snd_ak4114_suspend() and snd_ak4114_resume() functions to
handle PM properly, stopping and restarting the work at PM.
Currently only ice1712/juli.c deals with the PM and ak4114, so fix the
calls there appropriately.

The same PM functions are defined in ak4113.c, too, although they
aren't currently called yet (ice1712/quartet.c may be enhanced to
support PM later).
Acked-by: NJaroslav Kysela <perex@perex.cz>
Tested-by: NPavel Hofman <pavel.hofman@ivitera.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Nowadays it's recommended.  Replace all in a shot.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>