Commit Graph

1905 Commits

Author SHA1 Message Date
Geoffrey D. Bennett
a5b3612305 ALSA: usb-audio: scarlett2: Add support for "input-other" notify
Some models allow the level and pad settings to be controlled from the
front-panel of the device. For these, the device will send an
"input-other" notification to prompt the driver to re-read the status
of those settings.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/06289a7697455e96b7dbdfd2d384d4b20f8df6e0.1624379707.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:42:24 +02:00
Geoffrey D. Bennett
4be47798d7 ALSA: usb-audio: scarlett2: Add Gen 3 mixer support
Add mixer support for the Focusrite Scarlett 4i4, 8i6, 18i8, and 18i20
Gen 3 devices.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/22d0dc877dec026eb19630edec217ab72ebcd50a.1624379707.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:42:23 +02:00
Takashi Iwai
785b6f29a7 ALSA: usb-audio: scarlett2: Fix wrong resume call
The current way of the scarlett2 mixer code managing the
usb_mixer_elem_info object is wrong in two ways: it passes its
internal index to the head.id field, and the val_type field is
uninitialized.  This ended up with the wrong execution at the resume
because a bogus unit id is passed wrongly.  Also, in the later code
extensions, we'll have more mixer elements, and passing the index will
overflow the unit id size (of 256).

This patch corrects those issues.  It introduces a new value type,
USB_MIXER_BESPOKEN, which indicates a non-standard mixer element, and
use this type for all scarlett2 mixer elements, as well as
initializing the fixed unit id 0 for avoiding the overflow.

Tested-by: Geoffrey D. Bennett <g@b4.vu>
Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/49721219f45b7e175e729b0d9d9c142fd8f4342a.1624379707.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:39:19 +02:00
Geoffrey D. Bennett
b126bbac98 ALSA: usb-audio: scarlett2: Fix Level Meter control
The Level Meter control had a fixed number of channels and therefore
only worked with the 18i20 Gen 2. Fix the control to contain the
correct number of channels.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/5e9a2d5c136270db2d048db53a3b4b6e6d4a63de.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:36:07 +02:00
Geoffrey D. Bennett
e2cc91ac8f ALSA: usb-audio: scarlett2: Split struct scarlett2_ports
The scarlett2_ports struct contains both generic (hardware IDs and
descriptions) and model-specific (port count) data. Remove the generic
data from the scarlett2_device_info struct so it is not repeated for
every model.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/7a9e57e4e55a482390c692a9e60731d72b664a15.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:36:07 +02:00
Geoffrey D. Bennett
6522c36419 ALSA: usb-audio: scarlett2: Allow arbitrary ordering of mux entries
Some Gen 3 devices do not put all of the mux entries for the same port
types together in order in the "set mux" message data. To prepare for
this, replace the struct scarlett2_ports num[] array and the
assignment_order[] array with mux_assignment[], a list of port types
and ranges that is defined in the struct scarlett2_device_info.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/08e8d784d78262cb57496d28ef1ad7b6213a90ab.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:36:06 +02:00
Geoffrey D. Bennett
0c88f9db19 ALSA: usb-audio: scarlett2: Add mute support
For each analogue output, in addition to the output volume (gain)
control, the hardware also has a mute control. Add ALSA mute controls
for each analogue output.

If the device has the line_out_hw_vol feature, then the mute control
is disabled along with the output volume control when the switch is
set to HW.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/6fad82174b44633e46cfd96332a038de74d544f2.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:36:05 +02:00
Geoffrey D. Bennett
06250c89d4 ALSA: usb-audio: scarlett2: Add scarlett2_vol_ctl_write() helper
Add helper function for setting the read/write status of a volume
control. This will simplify the upcoming mute control support.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/00dd57e1abb3fa379fb51d4ac8537dbddc09f0ea.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:36:04 +02:00
Geoffrey D. Bennett
904e6da1fd ALSA: usb-audio: scarlett2: Remove repeated device info comments
Document the fields of struct scarlett2_device_info in the definition
of the struct, not in each instantiation.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/3486e4d38973333d4ec38f32578c16a9f97bf6c8.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:36:04 +02:00
Geoffrey D. Bennett
6fd9d695f3 ALSA: usb-audio: scarlett2: Move info lookup out of init function
The info variable is not used by snd_scarlett_gen2_init() except to
pass it to snd_scarlett_gen2_controls_create(), so move the lookup
into that function.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/c4b6d17708e104503d9a2b88f9b3320bb9904cfa.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:36:03 +02:00
Geoffrey D. Bennett
d92b91576e ALSA: usb-audio: scarlett2: Improve device info lookup
Add the USB device ID to the scarlett2_device_info struct so that the
switch statement which finds the appropriate struct can be replaced
with a loop that looks through an array of pointers to those structs.

Suggested-by: Vladimir Sadovnikov <sadko4u@gmail.com>
Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/474c408c29fb280a611e47e49e59ca2fb9810d27.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:36:03 +02:00
Geoffrey D. Bennett
76cb680603 ALSA: usb-audio: scarlett2: Reformat scarlett2_config_items[]
Use designated initializers and merge lines in preparation for more
configuration items coming soon.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/512d14eeb3571a266810c954d0f83140a3af7afc.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:36:02 +02:00
Geoffrey D. Bennett
077e104e2e ALSA: usb-audio: scarlett2: Merge common line in capture strings
Use a common sprintf() format for the mixer element names generated in
scarlett2_add_line_in_ctls() in preparation for more of them.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/d91dce45ac75a541c21f47540ecbda24bd83f68c.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:36:01 +02:00
Geoffrey D. Bennett
f3c6104301 ALSA: usb-audio: scarlett2: Add "Sync Status" control
Add "Sync Status" control to display the sync locked/unlocked status.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/d6967d7a34b2ea7e0672ba819e4ed8b99e8dcd35.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:36:01 +02:00
Geoffrey D. Bennett
e840ee3036 ALSA: usb-audio: scarlett2: Always enable interrupt polling
Always enable interrupt polling as every model has some sort of
status to report.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/8f49a6b9a9805ee0db221706193b7bb43b7fff75.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:36:00 +02:00
Geoffrey D. Bennett
c712c6c0ff ALSA: usb-audio: scarlett2: Fix 6i6 Gen 2 line out descriptions
There are two headphone outputs, and they map to the four analogue
outputs.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/205e5e5348f08ded0cc4da5446f604d4b91db5bf.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:35:59 +02:00
Geoffrey D. Bennett
acf91b8122 ALSA: usb-audio: scarlett2: Update initialisation sequence
The old initialisation code only works with Gen 2 devices. Replace it
with an initialisation sequence that works on both Gen 2 and Gen 3
devices.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/6e5c4fedb74b813872f6a4b7fba30b6c471fa63a.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:35:59 +02:00
Geoffrey D. Bennett
1f7fa6e5af ALSA: usb-audio: scarlett2: Add usb_tx/rx functions
Pull out snd_usb_ctl_msg() calls from scarlett2_usb() and put into
scarlett2_usb_tx() and scarlett2_usb_rx() functions.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/720d1d6f227fc8f5d7d6191a8de62db796940235.1624294591.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 21:35:58 +02:00
Takashi Iwai
362372ceb6 ALSA: usb-audio: Fix OOB access at proc output
At extending the available mixer values for 32bit types, we forgot to
add the corresponding entries for the format dump in the proc output.
This may result in OOB access.  Here adds the missing entries.

Fixes: bc18e31c30 ("ALSA: usb-audio: Fix parameter block size for UAC2 control requests")
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210622090647.14021-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-22 11:08:27 +02:00
Geoffrey D. Bennett
6c0a207813 ALSA: usb-audio: scarlett2: Remove hard-coded USB #defines
Remove the hard-coded interface number and related constants for the
vendor-specific interface and look them up from the USB endpoint
descriptor.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164652.GA9237@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-21 08:38:11 +02:00
Geoffrey D. Bennett
2967263192 ALSA: usb-audio: scarlett2: Don't copy struct scarlett2_config
scarlett2_usb_set_config() and scarlett2_usb_get_config() were copying
struct scarlett2_config. Use a pointer instead.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164648.GA9231@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-21 08:38:03 +02:00
Geoffrey D. Bennett
64c02a9d3f ALSA: usb-audio: scarlett2: Fix union usage in mixer control callbacks
Fix mixer control callbacks to use the correct members of the struct
snd_ctl_elem_value. The use of value.integer and value.enumerated were
swapped in a few places.

Update scarlett2_mux_src_enum_ctl_put() to use min() instead of
clamp() as value.enumerated.item is unsigned.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164647.GA9226@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-21 08:37:57 +02:00
Geoffrey D. Bennett
c5d8e00803 ALSA: usb-audio: scarlett2: Fix scarlett2_*_ctl_put() return values
Mixer control put callbacks should return 1 if the value is changed.
Fix the sw_hw, level, pad, and button controls accordingly.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164645.GA9221@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-21 08:37:50 +02:00
Geoffrey D. Bennett
9b5ddea9ce ALSA: usb-audio: scarlett2: Fix data_mutex lock
The private->vol_updated flag was being checked outside of the
mutex_lock/unlock() of private->data_mutex leading to the volume data
being fetched twice from the device unnecessarily or old volume data
being returned.

Update scarlett2_*_ctl_get() and include the private->vol_updated flag
check inside the critical region.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164643.GA9216@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-21 08:37:37 +02:00
Geoffrey D. Bennett
3eeb2a19db ALSA: usb-audio: scarlett2: Add temp variable for consistency
Add index temporary variable to scarlett2_mixer_ctl_put() for
consistency with the other *_ctl_put() functions.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164641.GA9211@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-21 08:37:30 +02:00
Geoffrey D. Bennett
e46f2195c8 ALSA: usb-audio: scarlett2: Rename struct scarlett2_mixer_data
Rename struct scarlett2_mixer_data to struct scarlett2_data. A
less-wordy name is better because it is used everywhere, and although
this is a mixer driver, it also controls other vendor-specific
features.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164639.GA9206@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-21 08:37:22 +02:00
Geoffrey D. Bennett
dbd82c0550 ALSA: usb-audio: scarlett2: Rename buttons/interrupts/vol
To match the vendor's terminology, change #defines, identifiers, and
comments:
- mute/dim/hardware buttons are now called dim/mute
- mixer status/interrupt is now notify
- vol is now monitor

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164636.GA9199@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-21 08:37:16 +02:00
Geoffrey D. Bennett
03bdbcf08a ALSA: usb-audio: scarlett2: Remove redundant info->button_count
The per-model button_count value was used to determine whether
dim/mute controls should be added, but these are present iff
line_out_hw_vol is true. Remove button_count and replace with
SCARLETT2_BUTTON_MAX and a check for line_out_hw_vol true.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164634.GA9193@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-21 08:37:07 +02:00
Geoffrey D. Bennett
411b22ed67 ALSA: usb-audio: scarlett2: Remove interrupt debug message
Just ignore instead of printing an error if the interrupt data is not
the expected length. This check was for development and the condition
has not been observed.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164632.GA9186@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-21 08:37:00 +02:00
Geoffrey D. Bennett
b677b6c6d8 ALSA: usb-audio: scarlett2: Remove unused/useless code
Remove #define not used.
Remove useless assignments and copies.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164630.GA9180@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-21 08:36:51 +02:00
Geoffrey D. Bennett
06a2162179 ALSA: usb-audio: scarlett2: Coding style improvements
Improve alignment and readability with:
- Whitespace fixes
- Add leading zeros to 32-bit flag values
- Rename SCARLETT2_USB_GET_METER_LEVELS to SCARLETT2_USB_GET_METER
- Rename SCARLETT2_PORT_DIRECTIONS to SCARLETT2_PORT_DIRNS

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164628.GA9172@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-21 08:36:43 +02:00
Geoffrey D. Bennett
c5210f2134 ALSA: usb-audio: scarlett2: Fix 18i8 Gen 2 PCM Input count
The 18i8 Gen 2 has 8 PCM Inputs, not 20. Fix the ports entry in
s18i8_gen2_info.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164625.GA9165@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-21 08:36:36 +02:00
Geoffrey D. Bennett
2975c588df ALSA: usb-audio: scarlett2: Remove incorrect S/PDIF comment
The 18i8 Gen 2 S/PDIF outputs are available at 192kHz, unlike
the 18i20 Gen 2. Remove the comment that says otherwise.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164622.GA9155@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-21 08:36:19 +02:00
Daehwan Jung
aecc19ec40 ALSA: usb-audio: fix rate on Ozone Z90 USB headset
It mislabels its 96 kHz altsetting and that's why it causes some noise

Signed-off-by: Daehwan Jung <dh10.jung@samsung.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/1623836097-61918-1-git-send-email-dh10.jung@samsung.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-17 11:38:46 +02:00
Damien Zammit
7fdabab8f5 ALSA: usb-audio: Add support for Denon DN-X1600
This provides support for Denon DN-X1600 hardware mixer.

The device itself supports 44100, 48000 and 96000 (Hz)
sample rates, but switching rates via software is currently not working.
Therefore, this patch hardcodes the sample rate to 48000Hz which
enables all 8 channels to function correctly when the correct
sample rate is selected on the hardware itself.

MIDI also tested and works.

Signed-off-by: Damien Zammit <damien@zamaudio.com>
Tested-by: xalmoxis@gmail.com
Link: https://lore.kernel.org/r/20210610083528.603942-2-damien@zamaudio.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-10 10:38:33 +02:00
Geoffrey D. Bennett
d6f9afe947 ALSA: usb-audio: scarlett2: Read mux at init time
Add support for retrieving the mux configuration from the hardware
when the driver is initialising. Previously the ALSA controls were
initialised to a default hard-coded state instead of being initialised
to match the hardware state.

Fixes: 9e4d5c1be2 ("ALSA: usb-audio: Scarlett Gen 2 mixer interface")
Suggested-by: Vladimir Sadovnikov <sadko4u@gmail.com>
Tested-by: Markus Schroetter <project.m.schroetter@gmail.com>
Tested-by: Alex Fellows <alex.fellows@gmail.com>
Tested-by: Daniel Sales <daniel.sales.z@gmail.com>
Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/15b17c60a2bca174bcddcec41c9419b746f21c1d.1623091570.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-08 14:02:43 +02:00
Geoffrey D. Bennett
2661f033c4 ALSA: usb-audio: scarlett2: Read mixer volumes at init time
Add support for reading the mixer volumes from the hardware when the
driver is initialising. Previously these ALSA volume controls were
initialised to zero instead of being initialised to match the hardware
state.

Fixes: 9e4d5c1be2 ("ALSA: usb-audio: Scarlett Gen 2 mixer interface")
Suggested-by: Vladimir Sadovnikov <sadko4u@gmail.com>
Tested-by: Markus Schroetter <project.m.schroetter@gmail.com>
Tested-by: Alex Fellows <alex.fellows@gmail.com>
Tested-by: Daniel Sales <daniel.sales.z@gmail.com>
Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/bb33fa9b79efc6f7a0f0e6fb7018cc8d4d59b3ba.1623091570.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-08 14:02:35 +02:00
Takashi Iwai
0280e07bbd Merge branch 'for-linus' into for-next 2021-06-08 14:02:06 +02:00
Takashi Iwai
9ce650a75a ALSA: usb-audio: Reduce latency at playback start
USB-audio driver behaves a bit strangely for the playback stream --
namely, it starts sending silent packets at PCM prepare state while
the actual data is submitted at first when the trigger START is kicked
off.  This is a workaround for the behavior where URBs are processed
too quickly at the beginning.  That is, if we start submitting URBs at
trigger START, the first few URBs will be immediately completed, and
this would result in the immediate period-elapsed calls right after
the start, which may confuse applications.

OTOH, submitting the data after silent URBs would, of course, result
in a certain delay of the actual data processing, and this is rather
more serious problem on modern systems, in practice.

This patch tries to revert the workaround and lets the URB submission
starting at PCM trigger for the playback again.  As far as I've tested
with various backends (native ALSA, PA, JACK, PW), I haven't seen any
problems (famous last words :)

Note that the capture stream handling needs no such workaround, since
the capture is driven per received URB.

Link: https://lore.kernel.org/r/20210601162457.4877-6-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-02 09:02:06 +02:00
Takashi Iwai
4f08391799 ALSA: usb-audio: Factor out DSD bitrev copy function
Just minor code refactoring.  Like DOP DSD code, it can be better in a
separate function for code readability.

Link: https://lore.kernel.org/r/20210601162457.4877-5-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-02 09:01:55 +02:00
Takashi Iwai
e8a8f09cb0 ALSA: usb-audio: Refactoring delay account code
The PCM delay accounting in USB-audio driver is a bit complex to
follow, and this is an attempt to improve the readability and provide
some potential fix.

Basically, the PCM position delay is calculated from two factors: the
in-flight data on URBs and the USB frame counter.  For the playback
stream, we advance the hwptr already at submitting URBs.  Those
"in-flight" data amount is now tracked, and this is used as the base
value for the PCM delay correction.  The in-flight data is decreased
again at URB completion in return.  For the capture stream, OTOH,
there is no in-flight data, hence the delay base is zero.

The USB frame counter is used in addition for correcting the current
position.  The reference frame counter is updated at each submission
and receiving time, and the difference from the current counter value
is taken into account.

In this patch, each in-flight data bytes is recorded in the new
snd_usb_ctx.queued field, and the total in-flight amount is tracked in
snd_usb_substream.inflight_bytes field, as the replacement of
last_delay field.

Note that updating the hwptr after URB completion doesn't work for
PulseAudio who tries to scratch the buffer on the fly; USB-audio is
basically a double-buffer implementation, hence the scratching the
buffer can't work for the already submitted data.  So we always update
hwptr beforehand.  It's not ideal, but the delay account should give
enough correctness.

Link: https://lore.kernel.org/r/20210601162457.4877-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-02 09:01:44 +02:00
Takashi Iwai
d303c5d38b ALSA: usb-audio: Pre-calculate buffer byte size
There are a bunch of lines calculating the buffer size in bytes at
each time.  Keep the value in subs->buffer_bytes and use it
consistently for the code simplicity.

Link: https://lore.kernel.org/r/20210601162457.4877-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-02 09:01:30 +02:00
Takashi Iwai
cdebd55303 ALSA: usb-audio: Make snd_usb_pcm_delay() static
It's a local function, let's make it static.

Link: https://lore.kernel.org/r/20210601162457.4877-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-06-02 09:01:17 +02:00
Shaokun Zhang
19307193e5 ALSA: usb-audio: Remove the repeated declaration
Function 'snd_usb_endpoint_suspend' is declared twice, so remove the
repeated declaration.

Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/1622278926-63857-1-git-send-email-zhangshaokun@hisilicon.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-05-30 09:30:46 +02:00
Takashi Iwai
f20fdd4362 Merge branch 'topic/pci-rescan-prep-v2' into for-next
Pull PCI rescan prep work.

Link: https://lore.kernel.org/r/20210523090920.15345-1-tiwai@suse.de
2021-05-25 08:50:03 +02:00
Takashi Iwai
b6cc78da36 ALSA: Drop superfluous argument from snd_power_wait()
The power_state argument of snd_power_wait() is superfluous, receiving
only SNDRV_POWER_STATE_D0.  Let's drop it in all callers for
simplicity.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210523090920.15345-6-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-05-25 08:49:39 +02:00
kernel test robot
2b899f31f1 ALSA: usb-audio: scarlett2: snd_scarlett_gen2_controls_create() can be static
sound/usb/mixer_scarlett_gen2.c:2000:5: warning: symbol 'snd_scarlett_gen2_controls_create' was not declared. Should it be static?

Fixes: 265d1a90e4 ("ALSA: usb-audio: scarlett2: Improve driver startup messages")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20210522180900.GA83915@f59a3af2f1d9
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-05-23 10:31:49 +02:00
Geoffrey D. Bennett
265d1a90e4 ALSA: usb-audio: scarlett2: Improve driver startup messages
Add separate init function to call the existing controls_create
function so a custom error can be displayed if initialisation fails.

Use info level instead of error for notifications.

Display the VID/PID so device_setup is targeted to the right device.

Display "enabled" message to easily confirm that the driver is loaded.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/b5d140c65f640faf2427e085fbbc0297b32e5fce.1621584566.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-05-21 16:22:52 +02:00
Geoffrey D. Bennett
764fa6e686 ALSA: usb-audio: scarlett2: Fix device hang with ehci-pci
Use usb_rcvctrlpipe() not usb_sndctrlpipe() for USB control input in
the Scarlett Gen 2 mixer driver. This fixes the device hang during
initialisation when used with the ehci-pci host driver.

Fixes: 9e4d5c1be2 ("ALSA: usb-audio: Scarlett Gen 2 mixer interface")
Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/66a3d05dac325d5b53e4930578e143cef1f50dbe.1621584566.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-05-21 16:20:25 +02:00
Johan Hovold
51cb8e206a ALSA: usb-audio: fix control-request direction
The direction of the pipe argument must match the request-type direction
bit or control requests may fail depending on the host-controller-driver
implementation.

Fix the UAC2_CS_CUR request which erroneously used usb_sndctrlpipe().

Fixes: 93db51d06b ("ALSA: usb-audio: Check valid altsetting at parsing rates for UAC2/3")
Cc: stable@vger.kernel.org      # 5.10
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210521133742.18098-1-johan@kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-05-21 16:19:22 +02:00