Commit graph

364 commits

Author SHA1 Message Date
Marcin Bukat
19caf27567 rk27xx codec: mix in only the tuner's line, keep the DAC
audiohw_set_monitor() switched the output mixer from the DAC to both line
bypasses: voice and beeps went silent while the radio played, and a line
nobody listened to was mixed in, with its noise. Both line inputs were
also powered from start-up on.

- the target names the line its tuner is on, RK27XX_CODEC_FM_LINE (1 or
  2); both are used where it does not say
- monitoring adds that line's bypass to the DAC instead of replacing it
- the line inputs stay in standby until monitored, and go back after

Only rk27generic uses the internal codec - the other rk27xx targets
have external DACs or codecs.

Tested on rk27generic: the radio plays through the monitored line, key
clicks stay audible over it, and playback is unaffected.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Change-Id: I177fdf605e4d997159898c868b2186c9584eb19a
2026-09-30 08:07:15 -04:00
Marcin Bukat
3689292b28 YP-CP3: recording from the microphone and FM radio
- config: HAVE_RECORDING, sources microphone and FM, 8-48 kHz
- wm8751.c: the YP-CP3's own audiohw_set_recsrc(). The rk27xx cannot
  send received samples straight back out, so what is heard of an input
  goes through the codec's analog bypass - the input PGA into the output
  mixers: the radio always, the microphone never. As in the original
  firmware, the radio passes the PGA at +12 dB when only listened to,
  and the microphone - mono, on RINPUT2 - gets +13 dB boost and is
  recorded by the right ADC onto both channels (the original firmware's
  noise gate is left out). The HD300's version assumes the microphone on
  INPUT3 and headphones on OUT1, and switches OUT2 - the YP-CP3's
  headphones - off.
- wm8751.c: the playback-only FM monitor added for the YP-CP3 goes; the
  radio is routed by audiohw_set_recsrc() now, as on the HD300
- wm8751.h: DATSEL, which ADC feeds each channel of the output data

Only partly tested on hardware: FM radio still plays, and the recording
screen's peak meter follows the microphone. Not yet tested: a recorded
file played back, recording FM, recording gain range.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Change-Id: I3c25f4333f765d98dddc2fd722c111f8493bbe77
2026-09-29 09:52:13 +02:00
Marcin Bukat
c922ef98c3 YP-CP3: Si4703 FM radio
The YP-CP3's tuner is a Silicon Labs Si470x at I2C address 0x20, an
Si4703 by the RDS the original firmware enables. The firmware drives it
the Si470x way - writes from register 2, reads from 0x0A - starts its
oscillator with TEST1 = 0x8100 and a 500 ms wait before ENABLE, and has
no power or reset line for it.

- config: CONFIG_TUNER SI4700 with RDS, polled (no interrupt line
  needed), and FM radio as an input source
- si4700.c: the YP-CP3 starts the oscillator as the Sansas do
- power-ypcp3.c: tuner power stubs - there is nothing to switch
- the rk27xx tuner I2C glue, and "radio" in the target's configure entry
- wm8751.c: audiohw_set_monitor() for a WM8750 target that plays the
  radio but cannot record (rk27xx has no recording yet). The tuner, on
  LINPUT1/RINPUT1, goes through the input PGA at +12 dB - as in the
  original firmware - into the output mixers, the DAC staying in the mix.
  The existing monitor routing lives in the recording code and switches
  OUT2 off, which is the YP-CP3's headphone output.

Tested on a YP-CP3: stations tune and play at a sane level.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Change-Id: Ic097fc85dbd7fb71fcc28c97a9d378fa09599e79
2026-09-29 09:47:51 +02:00
Marcin Bukat
a35f344eef YP-CP3: WM8750 audio
The YP-CP3 uses Wolfson WM8750. Headphones are wired on OUT2 and
a headphone amplifier enabled by GPIO F2, active high -
all RE from the original firmware.

The original firmware runs the codec as I2S master in its 12 MHz "USB
mode", fed a fixed 12 MHz MCLK, which puts 44.1 kHz at 44.118. Rockbox
instead makes the rk27xx the master and clocks the codec from the codec
PLL at exactly 256 fs (CODEC_SLAVE, as every other rk27xx target with an
external codec), so the codec's CLOCKING register is its normal-mode
256 fs setting at every rate. 96 kHz is left out: the WM8750 cannot take
it at 256 fs.

- config: HAVE_WM8750, CODEC_SLAVE, rates 8-48 kHz; the WM8750 has
  hardware tone controls, so HAVE_SW_TONE_CONTROLS goes
- ypcp3/wmcodec-ypcp3.c: register writes over the rk27xx I2C driver
- wm8751.c: on the YP-CP3, power on and drive OUT2 instead of OUT1, set
  the volume there, and switch the amplifier with the outputs
- english.lang: the YP-CP3 gets the bass/treble cutoff settings the
  WM8750 brings

Tested on a YP-CP3: playback at 44.1 and 48 kHz on headphones, pitch and
volume correct.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Change-Id: I870038fb6a21a9c26b025e3df7c220fd925f49f6
2026-09-29 09:34:02 +02:00
Andrew Rice
76f8925d23 ipodnano3g: power, RTC, backlight, battery and audio
Fills in the stubs the Nano 3G port was left with, taking each from how
the original firmware drives the same hardware.

Testing evidence: firmware/target/arm/s5l8702/ipodnano3g/TESTING.md.

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Change-Id: Iea5314769502f5941a176600869591756c5e3233
2026-09-20 08:53:53 -04:00
Michael McAllister
f349e85154 ingenic: move the drivers the X1000 shares with other SoCs
Pure file move, in preparation for a second Ingenic SoC.

  dma, gpio, i2c, installer, kernel, nand and the SPL NAND backend
  move from target/mips/ingenic_x1000/ to target/mips/ingenic/

Drivers that cannot move as whole files, because part of each is
genuinely X1000-specific, are left alone for now: msc, uart, sfc, the
debug menu and the OST helpers in system-x1000.c.

Verified as a no-op: built at target 246 --type=b before and after from
the same source path, bootloader.bin is byte-identical, and every moved
file's object has the same instruction stream under its new name.
Builds clean with no warnings for targets 246, 260 and 247, both
--type=n and --type=b.

Change-Id: I9f67c23384df49b8c4554d695b772bcd54a4e32f
Co-Authored-By: Claude Opus 5
2026-09-01 11:37:21 -04:00
Mauricio Garrido
e498c0171a 3ds: Port refactor.
This commit does the following changes to the 3ds port:

- Rename the target from ctru to 3ds.
- Rename all files and functions with the ctru naming convention to 3ds.
- Created a new file and folder structure that will better integrate future console ports that share the same codebase.
- Fixed a buffer overflow bug in pcm code.

Change-Id: I17c6f86df64eb99dd2b653485d70832ff46b2ba8
2026-09-01 08:39:07 -04:00
Skye
f463f4a17a audiohw: remove unused BALANCE_CAP and CLIPPING_CAP
Change-Id: I8905e9a656fcba20c8adeb840d148bcd97511665
2026-07-20 12:47:12 -04:00
Solomon Peachy
d54b9e6f8d chore: Get rid of *all* vestigal CVS '$Id:$' tags
Change-Id: I35c13a9768c582e4851aa252dd3ea5c89f760c8c
2026-06-01 16:01:18 -04:00
Aidan MacDonald
df89a47c11 drivers: add TLV320AIC3104 codec driver
Change-Id: Ic8825fc8f057c28316e9f7cb6af3dd34e8200d48
2026-02-26 15:00:13 +00:00
Aidan MacDonald
58b186d6de Remove Creative Zen Vision and Vision:M ports
They haven't seen development activity for the better part
of two decades and apparently were never able to even boot
to Rockbox, although the Rockbox bootloader could load the
original firmware.

Change-Id: I5cfa5909c21feaf2825aa685a05e78044b893a13
2026-02-06 07:31:54 -05:00
Solomon Peachy
a79bdaf462 audio: Move hosted audio "codec" drivers into their respective target dirs
They are nearly entirely generic wrappers around ALSA controls, unique
per target, and are ripe for further consolidation.

Change-Id: I05e4a450e3e89e03616906601c4f8fa46200dff5
2025-12-02 18:59:50 -05:00
Mauricio Garrido
3b7dafb117 3ds: 3ds port sources. Second set of two.
This commit adds new files written exclusively for the 3ds port.

Additional comments:

1. Plugins works, but will be enabled in future commits.
2. The port has only been tested on the New 3DS.
3. Not all features of rockbox have been tested so there may be bugs or non-functional features.
4. There is a known issue where a random crash can occur when exiting the app.

Change-Id: I122d0bea9aa604e04fca45ba8287cf79e6110769
2025-10-23 20:09:12 -04:00
Solomon Peachy
95f970076e surfansf28: Major improvements:
* Add a crude keymap
 * Use native "hardware mute" for audiohw_mute()
 * Properly handle touchscreen inputs
 * Can now play back music, with some warts..

Broken:

 * rotary wheel still doesn't work
 * audio garbled/distorted a bit
 * no volume control

Change-Id: I040217035a7bf3983b0e269fca3408eedd972cd0
2025-05-05 20:38:18 -04:00
Solomon Peachy
82f3d0c18f WIP hosted port to the Surfans F28
* Only bootloader builds
 * Plugins disabled
 * No keymaps to anything else
 * No simulator
 * Touchscreen not wired up yet
 * Audio still untested

Bugs:

 * rotary encoder does nothing in bootloader
   (might be bootloader bug, might be something else)

Other stuff pulled in:

 * Unify all of the (identical!) hibyos makefiles
 * Rename the "bootloader" to more generic name

Change-Id: I6d8a3b58de726db8e89cf193c90960a070a575c2
2025-05-04 18:34:22 -04:00
Dana Conrad
48811ed4a8 ErosQ Hosted: Fix maximum volume upon plugging in headphones
Ref. FS#13533

Change-Id: I343df8cd351bb2578dd11894114903eba527f2c7
2024-12-20 12:09:35 -05:00
Dana Conrad
5ed0db6e90 erosqnative: Repurpose stereosw_select setting for output select
Turns out they did not swap the stereo switch lines on us,
so this setting isn't really useful. Repurpose it to allow
the user to force the device into headphone or line output mode.

Note that settings other than "Automatic" will cause jack detection
to not work.

Default Automatic.

Change-Id: If94499fbb8f0d92111811fe51f6107ce213b66ad
2024-12-07 09:20:40 -05:00
Dana Conrad
adbd0125fd erosqnative hw1/hw2: Check for DAC in bootloader
Check for the ES9018K2M dac in the bootloader for
hw1/hw2 devices. Assume that all devices newer than
hw2 have ES9018K2M DAC unconditionally.

All devices will now report the correct hw revision
in the debug menu under Device Data.

Add devicedata.version field, current version 0.

Rename device_data.lcd_version to device_data.hw_rev.

hw2 devices with older bootloaders which ID as hw1 are special-
cased to keep using hwvol on them. They should still upgrade though.

Change-Id: If0fd5ce3bc6e85e511047721ec18e42fb89312e7
2024-12-06 11:39:24 -05:00
Solomon Peachy
51ba8b3eee erosqhosted: Support HW volume control on rev2+ hardware
This also adds hwrev info to the debug output.

Change-Id: Ia75218cacb8f756a23a77334ea6ab69ac3b20d10
2024-11-01 14:12:31 -04:00
Dana Conrad
5f377c2613 Eros Q Native: Add Stereo SW behavior setting
Hopefully this should cover our bases so we can change
the behavior of the stereo switch to keep line out working
when they change the hardware on us!

Change-Id: Ic36bcb3778d5681a5f3f158c689df9c1420c1d7e
2024-05-12 09:42:02 -04:00
Dana Conrad
8cc7476735 ErosQ Native ES9018K2M: Add digital filters capability
Setting not yet hidden for older hardware revision.

Change-Id: Iaaa5727e63c38de578a6bbc73498ae1073180e65
2024-01-02 08:19:23 -05:00
Dana Conrad
a3fe07ff12 ErosQ New Revision HW volume
Add HW volume control via ES9018K2M, and reorganize
eros_qn_codec.c/.h, audiohw-erosqnative.c.

This automatically detects the presence of the new DAC and
uses its hardware volume scaling. If not present, use same
SWVOL we have been using so far.

Add debug menu readout of SWVOL/I2C result.

Break out es9018k2m stuff into its own file so that
maybe it can be useful to other ports.

Note that we may need to get smarter about detecting the DAC
type if/when another model emerges.

Change-Id: I586a1cf7f150dd6b4e221157859825952840af56
2024-01-02 06:51:07 -05:00
Dana Conrad
66519000f4 ErosQNative: Enable Line Out capabilities on new revision players
The newer players have some changed hardware, but most importantly
the line out now appears to be routed through the stereo switch
instead of being hardwired directly off the DAC.

Disable muting the headphone amp, enable switching the stereo switch,
and rename some of the GPIOs to be more generic since the DAC,
headphone amp, and stereo switch all appear to have changed.

Change-Id: I220fe5e37bcbcd959b544183e1fcf70673a83c13
2023-01-22 15:11:35 -05:00
Aidan MacDonald
d93e054419 fiiom3k: power down amp before switching DAC power modes
As detailed in the <Low Power Mode> section of the AK4376A
datasheet, the amp should be powered down before switching
power modes (or to a sample rate <= 12 KHz).

Change-Id: I3ab0a21c78a3ad2bb418b64c916f7dbe2a843efa
2022-01-16 19:35:40 -05:00
Aidan MacDonald
dac3175445 audiohw: avoid magic numbers for DAC power mode
Define proper symbolic constants for power mode. Also allow
targets to define the default power mode setting.

Change-Id: Ia07cf854dce47d0a6aa88e067471f1ff9fbc45fb
2022-01-16 19:35:40 -05:00
Aidan MacDonald
18b3e91707 x1000: internal codec audio driver
Change-Id: I2eb551ec6b593951c33ae6b93df2a23dc6612c43
2022-01-16 19:17:25 -05:00
Aidan MacDonald
fd568d90a4 m3k: don't use mixer controls for volume control
According to a forum user, there's an audible click when changing
the volume between -32 and -32.5 dB with some headphones. Fix this
by not (ab)using the DAC digital mixer for volume control.

The mixer only provides an extra -6 dB of hardware volume range,
so the only side effect is that software volume will now kick in
at -32 dB instead of -38 dB.

Change-Id: If24d9bc0058eff3c1a29aefb155a2e378522623c
2021-10-05 12:46:00 +01:00
Dana Conrad
77a98ada12 Eros Q Native: Make Mute logic channel-independent
An oversight on my part meant that setting channel balance to
100% L or 100% R would mute both channels - this logic will
prevent that.

Change-Id: I912c2745784fbbbd7a773e1234179801f2ca4680
2021-08-10 18:15:53 -05:00
Dana Conrad
56b0dde545 Higher bitdepth software volume scaling
Operates between 0 and -74 dB (mute) without issue

Change-Id: I497e002bd8db43833a09ebbc29212fbb6cc8ebfd
2021-08-07 14:21:47 +00:00
Dana Conrad
16b0098256 ErosQ Native: Add DC Offset to PCM data
A small negative offset seems to silence all
play/pause clicking on the PCM5102A.

Also adding PCM soft muting, and muting the headphone amp
when the headphones are detected as removed. This has been
tested to not cause any unintended side effects on the
line out.

Also confirmed the numerical dB values are (approx.) correct.

Change-Id: I689d68887c86add9cc5e0ccb0c7de01aaa69b4d9
2021-08-07 14:21:47 +00:00
Dana Conrad
3e7a09cb0d New Port: Eros Q Native
What works:
- LCD: 16-bit RGB565
- all buttons, including scrollwheel
- SD Card
- Battery level and charging/not charging status
- USB
- audio
- sample rate switching
- HP / LO detect, with "safe" fixed LO volume -
   LO volume will only be put to user-defined max volume
   if headphones are not present.
- rtc
- Plugins build, tried a couple and they seem OK
- Bootloader, installable to nand via usbboot

What doesn't work:
- Dual Boot
- power on/off has intermittent, low volume audio click
   (sometimes it's completely silent, sometimes there's
    a click)
- Audio uses 16-bit volume scaling, so clicking/popping
   is pretty bad at lower volumes - need 32 bit volume
   scaling, 24 bit I2S data
- USB HID keys not yet defined
- no jztool support

Unknowns:
- Stereo Switch pins: Direction select, AC_DC
   (probably not even hooked up)
- What is the actual purpose of the Stereo Swtich?
- How does the bluetooth module connect?

"Someday" stuff:
- get LCD working at higher bit depth
- Bluetooth

Change-Id: I70dda8fc092c6e3f4352f2245e4164193f803c33
2021-07-18 12:14:35 +00:00
Solomon Peachy
cd17decd5a xduoox3ii: Add "Super Slow" filter roll-off
I'm not happy with the proliferation of filter-roll-off options
but I don't have a less ugly solution.

Change-Id: I740fca006fa0c3443a467acfea55b6574d48346b
2021-07-17 08:18:31 -04:00
Aidan MacDonald
4c60bc9e68 New port: Shanling Q1 native
- Audio playback works
- Touchscreen and buttons work
- Bootloader works and is capable of dual boot
- Plugins are working
- Cabbiev2 theme has been ported
- Stable for general usage

Thanks to Marc Aarts for porting Cabbiev2 and plugin bitmaps.

There's a few minor known issues:

- Bootloader must be installed manually using 'usbboot' as there is
  no support in jztool yet.

- Keymaps may be lacking, need further testing and feedback.

- Some plugins may not be fully adapted to the screen size and could
  benefit from further tweaking.

- LCD shows abnormal effects under some circumstances: for example,
  after viewing a mostly black screen an afterimage appears briefly
  when going back to a brightly-lit screen. Sudden power-off without
  proper shutdown of the backlight causes a "dissolving" effect.

- CW2015 battery reporting driver is buggy, and disabled for now.
  Battery reporting is currently voltage-based using the AXP192.

Change-Id: I635e83f02a880192c5a82cb0861ad3a61c137c3a
2021-07-13 22:01:33 +01:00
Tomasz Moń
02c4ec294c Sansa Connect: Properly setup internal speaker
Switch to internal speaker when headphones are disconnected.

Change-Id: I7c04ac139ad540d85f960e9dadc2faaf4f856055
2021-06-14 12:48:16 +00:00
Aidan MacDonald
663c5268ac AK4376 driver: refactoring
Some audiohw API calls are shared between playback and recording,
eg. frequency settings. Implementing these in the DAC driver won't
work for the M3K, as it uses a separate codec for microphone input.

Change-Id: Ieb0a267f8a81b9e2bbf0bbca951c5778f8dcd203
2021-05-31 23:00:14 +01:00
Dana Conrad
4dc602dd7f erosq: Tweak volume scale to be approximately correct
Tested on eros q, everything measured from line out,
open circuit.

- volume steps were approximately double the dB they
  were labelled as, so "-2 dB" would result in a change
  of about -4 dB from maximum (0, +6.2dBV)
- maximum volume defining the line out volume only
  changed every 10 values, and then was not close
  to correct- "-10 dB" resulted in -2.5 dB from maximum

This gets the volume dB approximately correct, and
maximum volume correctly sets the line out volume.
I was unable to get odd values in the max volume
to work, so set the step size to 2 instead of one.

For "consumer level" (-10dBV), set to -16.
For "Pro level" (+4dBu -> ~1.8dBV), set to -4.

Change-Id: I898b85d768153579a893b23551019af88f865d21
2021-04-17 12:09:19 +00:00
Solomon Peachy
42dba708e3 hosted: Don't open alsa control device directly
It was just being used as a proxy "yeah, we called hw_init()" so
just use a flag for that directly.

affects rocker, erosq, xduoo x3ii/x20, and fiiom3klinux

Change-Id: I14bd9f8d91f1d6cc8de0982a7426e2a103c6bfce
2021-04-14 01:39:57 +00:00
Solomon Peachy
bc416ff590 misc: Only include rbpaths.h and string-extra.h in places that need it
(Don't include rbpaths.h in settings.h, or string-extra.h in rbpaths.h)

Build-tested on rocker, erosq, mini2g, nano2g,
                xduoox3, clipzip, dx50, and uisim

Change-Id: If32e9c9910f5c8247a655cb64522b84d6d7ccbb5
2021-04-10 12:08:12 -04:00
Solomon Peachy
1e2a9a651c erosq: Switch to 32-bit PCM output, and do volume scaling in driver
Should improve audio output quality, especially at lower volumes.

Change-Id: I31c38f05fe4b554b092511f0fe7aaad9f346f6c5
2021-04-08 23:58:49 -04:00
Solomon Peachy
e17337c9aa ErosQ: fix panic on startup caused by ad55da5f
It turns out #include "settings.h" pulls in rbpaths.h which ends up
remapping open() to the path-mangling rockbox open().

By defining RB_FILESYSTEM_OS we prevent the remap.  My mistake for not
testing this before committing!

Change-Id: I2978eb7b413693c4cb887b7ac7b2457780db7d25
2021-04-08 21:58:08 -04:00
Dana Conrad
ad55da5f87 ErosQ: Set Line Level Output volume
With a full-scale 440Hz tone, the line out voltage
measured approx. 5.8Vpp at the 0 setting. WAY too hot!
(9 dBV, in fact)

For 0.894Vpp (-10 dBV - consumer devices), -18 appears to be
about right for line level signals, but for "pro" equipment
a different level may be desired.

Therefore, the user to cap the line out level by re-using the global
volume limit setting.

Change-Id: I0d1d6482ea95537e9a2d00884eaee2713771c614
2021-04-08 14:37:14 -04:00
Aidan MacDonald
3ec66893e3 New port: FiiO M3K on bare metal
Change-Id: I7517e7d5459e129dcfc9465c6fbd708619888fbe
2021-03-28 00:01:37 +00:00
Aidan MacDonald
55805e13a4 Add new audiohw capability: POWER_MODE_CAP
This allows the user to make use of the DAC's power-saving abilities.
The two modes are "high performance" and "battery saver". This feature
is supported by the AK4376 DAC in the upcoming FiiO M3K port.

The setting is only a manual toggle right now, but in the future it
could be hooked up to the battery level (via another setting) so it
can be toggled automatically when the battery gets too low.

Change-Id: I482af6e2f969fcbdeb3411bd3ff91f866b12d027
2021-03-22 13:00:11 +00:00
Solomon Peachy
87e37a4d48 xduoo_x3ii: Improvements in the meymappings!
* PREV/NEXT now swapped so they do what is expected in most contexts
 * List and setting context retains prior behavior
 * Enable the ADC that reads the headset remote and map the keys.
 * As ADC-based remote "events" arrive as press/release pairs,
   delay the button release.

Change-Id: I22d4eac3bfe1573b50eca795cf377bdafdeb5336
2021-03-10 21:35:44 -05:00
Aidan MacDonald
aacb0811d9 Rename symbols of FiiO M3K Linux-based port
Mainly a straight replacement of FIIO_M3K -> FIIO_M3K_LINUX.

Change-Id: Id07c84f8150991d1b6851540c2c3f8f67e3f12c2
2021-02-27 23:53:28 +00:00
Solomon Peachy
daefd5686f Rocker: Fix a boneheaded bug introduced in dd82f13fa1
Change-Id: Ia743cba6ccd50b38b052f26cce23ac9fe7aac31b
2020-10-31 20:26:37 +00:00
Amaury Pouly
dd82f13fa1 nwz/alsa: various improvements
Also audiohw driver to specific device name, rewrite alsa controls code to
cache more data, thus making the code easier and use less stack. Avoid using
short/long in pcm alsa code since it's the wrong size on 64-bit (simulator
for example)

Change-Id: Ibc1ec44396e37b6cbdedbcf37300878638e5d2d3
2020-10-31 14:16:31 +00:00
Solomon Peachy
fe2d52cc7d pcm: Get rid of pcm_play_pause() and associated APIs
Nothing in the core has used it for some time.  It's exported to the
plugin API but the last plugins to use it were switched to the mixer API
back in 2011.

This allows us to get rid of pcm_play_dma_pause() from all audio drivers

Change-Id: Ic3fa02592316f84963e41d792d1cabb436d1ff6b
2020-10-31 01:18:27 +00:00
Solomon Peachy
28b9c8bfeb rocker: Disable mute-on-pause, due to a platform kernel bug.
In short, the display fading back in after a pause resuming interferes
with the audio codec, causing BadThings(tm) that cannot be recovered from

This really is just avoiding a known trigger; there's no guarantee this
condition won't occur under random circumstances during normal use,
and there's no good way to work around this from within rockbox.

I suspect the underlying problem is that both the display control and
codec control share an i2c bus, but the kernel drivers implementing them
isn't using proper linux bus access/locking.

Change-Id: Id4f56f9cb269ed74aac2f041146b3630cef09030
2020-10-26 01:07:59 +00:00
Solomon Peachy
4afd1f9aa6 hosted: Document HW capabilities of audio drivers
One surprise:  X3ii is capable of 384KHz playback

Change-Id: I0cc88637c81a21d54979e82b2941fe14de933d4d
2020-10-25 00:42:41 -04:00