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ASoC: Add support for all the downstream rpi sound card drivers
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ASoC: Add support for Rpi-DAC

ASoC: Add prompt for ICS43432 codec

Without a prompt string, a config setting can't be included in a
defconfig. Give CONFIG_SND_SOC_ICS43432 a prompt so that Pi soundcards
can use the driver.

Signed-off-by: Phil Elwell <[email protected]>

Add IQaudIO Sound Card support for Raspberry Pi

Set a limit of 0dB on Digital Volume Control

The main volume control in the PCM512x DAC has a range up to
+24dB. This is dangerously loud and can potentially cause massive
clipping in the output stages. Therefore this sets a sensible
limit of 0dB for this control.

Allow up to 24dB digital gain to be applied when using IQAudIO DAC+

24db_digital_gain DT param can be used to specify that PCM512x
codec "Digital" volume control should not be limited to 0dB gain,
and if specified will allow the full 24dB gain.

Modify IQAudIO DAC+ ASoC driver to set card/dai config from dt

Add the ability to set the card name, dai name and dai stream name, from
dt config.

Signed-off-by: DigitalDreamtime <[email protected]>

IQaudIO: auto-mute for AMP+ and DigiAMP+

IQAudIO amplifier mute via GPIO22. Add dt params for "one-shot" unmute
and auto mute.

Revision 2, auto mute implementing HiassofT suggestion to mute/unmute
using set_bias_level, rather than startup/shutdown....
"By default DAPM waits 5 seconds (pmdown_time) before shutting down
playback streams so a close/stop immediately followed by open/start
doesn't trigger an amp mute+unmute."

Tested on both AMP+ (via DAC+) and DigiAMP+, with both options...

dtoverlay=iqaudio-dacplus,unmute_amp
 "one-shot" unmute when kernel module loads.

dtoverlay=iqaudio-dacplus,auto_mute_amp
 Unmute amp when ALSA device opened by a client. Mute, with 5 second delay
 when ALSA device closed. (Re-opening the device within the 5 second close
 window, will cancel mute.)

Revision 4, using gpiod.

Revision 5, clean-up formatting before adding mute code.
 - Convert tab plus 4 space formatting to 2x tab
 - Remove '// NOT USED' commented code

Revision 6, don't attempt to "one-shot" unmute amp, unless card is
successfully registered.

Signed-off-by: DigitalDreamtime <[email protected]>

ASoC: iqaudio-dac: fix S24_LE format

Remove set_bclk_ratio call so 24-bit data is transmitted in
24 bclk cycles.

Signed-off-by: Matthias Reichl <[email protected]>

ASoC: iqaudio-dac: use modern dai_link style

Signed-off-by: Matthias Reichl <[email protected]>

Added support for HiFiBerry DAC+

The driver is based on the HiFiBerry DAC driver. However HiFiBerry DAC+ uses
a different codec chip (PCM5122), therefore a new driver is necessary.

Add support for the HiFiBerry DAC+ Pro.

The HiFiBerry DAC+ and DAC+ Pro products both use the existing bcm sound driver with the DAC+ Pro having a special clock device driver representing the two high precision oscillators.

An addition bug fix is included for the PCM512x codec where by the physical size of the sample frame is used in the calculation of the LRCK divisor as it was found to be wrong when using 24-bit depth sample contained in a little endian 4-byte sample frame.

Limit PCM512x "Digital" gain to 0dB by default with HiFiBerry DAC+

24db_digital_gain DT param can be used to specify that PCM512x
codec "Digital" volume control should not be limited to 0dB gain,
and if specified will allow the full 24dB gain.

Add dt param to force HiFiBerry DAC+ Pro into slave mode

"dtoverlay=hifiberry-dacplus,slave"

Add 'slave' param to use HiFiBerry DAC+ Pro in slave mode,
with Pi as master for bit and frame clock.

Signed-off-by: DigitalDreamtime <[email protected]>

Fixed a bug when using 352.8kHz sample rate

Signed-off-by: Daniel Matuschek <[email protected]>

ASoC: pcm512x: revert downstream changes

This partially reverts commit 185ea05
which was added by #1152

The downstream pcm512x changes caused a regression, it broke normal
use of the 24bit format with the codec, eg when using simple-audio-card.

The actual bug with 24bit playback is the incorrect usage
of physical_width in various drivers in the downstream tree
which causes 24bit data to be transmitted with 32 clock
cycles. So it's not the pcm512x that needs fixing, it's the
soundcard drivers.

Signed-off-by: Matthias Reichl <[email protected]>

ASoC: hifiberry_dacplus: fix S24_LE format

Remove set_bclk_ratio call so 24-bit data is transmitted in
24 bclk cycles.

Signed-off-by: Matthias Reichl <[email protected]>

ASoC: hifiberry_dacplus: transmit S24_LE with 64 BCLK cycles

Signed-off-by: Matthias Reichl <[email protected]>

hifiberry_dacplus: switch to snd_soc_dai_set_bclk_ratio

Signed-off-by: Matthias Reichl <[email protected]>

ASoC: hifiberry_dacplus: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

Add driver for rpi-proto

Forward port of 3.10.x driver from https://github.com/koalo
We are using a custom board and would like to use rpi 3.18.x
kernel. Patch works fine for our embedded system.

URL to the audio chip:
http://www.mikroe.com/add-on-boards/audio-voice/audio-codec-proto/

Playback tested with devicetree enabled.

Signed-off-by: Waldemar Brodkorb <[email protected]>

ASoC: rpi-proto: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

Add Support for JustBoom Audio boards

justboom-dac: Adjust for ALSA API change

As of 4.4, snd_soc_limit_volume now takes a struct snd_soc_card *
rather than a struct snd_soc_codec *.

Signed-off-by: Phil Elwell <[email protected]>

ASoC: justboom-dac: fix S24_LE format

Remove set_bclk_ratio call so 24-bit data is transmitted in
24 bclk cycles.

Also remove hw_params as it's no longer needed.

Signed-off-by: Matthias Reichl <[email protected]>

ASoC: justboom-dac: use modern dai_link style

Signed-off-by: Matthias Reichl <[email protected]>

New AudioInjector.net Pi soundcard with low jitter audio in and out.

Contains the sound/soc/bcm ALSA machine driver and necessary alterations to the Kconfig and Makefile.
Adds the dts overlay and updates the Makefile and README.
Updates the relevant defconfig files to enable building for the Raspberry Pi.
Thanks to Phil Elwell (pelwell) for the review, simple-card concepts and discussion. Thanks to Clive Messer for overlay naming suggestions.

Added support for headphones, microphone and bclk_ratio settings.

This patch adds headphone and microphone capability to the Audio Injector sound card. The patch also sets the bit clock ratio for use in the bcm2835-i2s driver. The bcm2835-i2s can't handle an 8 kHz sample rate when the bit clock is at 12 MHz because its register is only 10 bits wide which can't represent the ch2 offset of 1508. For that reason, the rate constraint is added.

ASoC: audioinjector-pi-soundcard: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

New driver for RRA DigiDAC1 soundcard using WM8741 + WM8804

ASoC: digidac1-soundcard: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

Add support for Dion Audio LOCO DAC-AMP HAT

Using dedicated machine driver and pcm5102a codec driver.

Signed-off-by: DigitalDreamtime <[email protected]>

ASoC: dionaudio_loco: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

Allo Piano DAC boards: Initial 2 channel (stereo) support (#1645)

Add initial 2 channel (stereo) support for Allo Piano DAC (2.0/2.1) boards,
using allo-piano-dac-pcm512x-audio overlay and allo-piano-dac ALSA ASoC
machine driver.

NB. The initial support is 2 channel (stereo) ONLY!
(The Piano DAC 2.1 will only support 2 channel (stereo) left/right output,
 pending an update to the upstream pcm512x codec driver, which will have
 to be submitted via upstream. With the initial downstream support,
 provided by this patch, the Piano DAC 2.1 subwoofer outputs will
 not function.)

Signed-off-by: Baswaraj K <[email protected]>
Signed-off-by: Clive Messer <[email protected]>
Tested-by: Clive Messer <[email protected]>

ASoC: allo-piano-dac: fix S24_LE format

Remove set_bclk_ratio call so 24-bit data is transmitted in
24 bclk cycles.

Also remove hw_params and ops as they are no longer needed.

Signed-off-by: Matthias Reichl <[email protected]>

ASoC: allo-piano-dac: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

Add support for Allo Piano DAC 2.1 plus add-on board for Raspberry Pi.

The Piano DAC 2.1 has support for 4 channels with subwoofer.

Signed-off-by: Baswaraj K <[email protected]>
Reviewed-by: Vijay Kumar B. <[email protected]>
Reviewed-by: Raashid Muhammed <[email protected]>

Add clock changes and mute gpios (#1938)

Also improve code style and adhere to ALSA coding conventions.

Signed-off-by: Baswaraj K <[email protected]>
Reviewed-by: Vijay Kumar B. <[email protected]>
Reviewed-by: Raashid Muhammed <[email protected]>

PianoPlus: Dual Mono & Dual Stereo features added (#2069)

allo-piano-dac-plus: Master volume added + fixes

Master volume added, which controls both DACs volumes.

See: #2149

Also fix initial max volume, default mode value, and unmute.

Signed-off-by: allocom <[email protected]>

ASoC: allo-piano-dac-plus: fix S24_LE format

Remove set_bclk_ratio call so 24-bit data is transmitted in
24 bclk cycles.

Signed-off-by: Matthias Reichl <[email protected]>

sound: bcm: Fix memset dereference warning

This warning appears with GCC 6.4.0 from toolchains.bootlin.com:

../sound/soc/bcm/allo-piano-dac-plus.c: In function ‘snd_allo_piano_dac_init’:
../sound/soc/bcm/allo-piano-dac-plus.c:711:30: warning: argument to ‘sizeof’ in ‘memset’ call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess]
  memset(glb_ptr, 0x00, sizeof(glb_ptr));
                              ^

Suggested-by: Phil Elwell <[email protected]>
Signed-off-by: Nathan Chancellor <[email protected]>

ASoC: allo-piano-dac-plus: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

Add support for Allo Boss DAC add-on board for Raspberry Pi. (#1924)

Signed-off-by: Baswaraj K <[email protected]>
Reviewed-by: Deepak <[email protected]>
Reviewed-by: BabuSubashChandar <[email protected]>

Add support for new clock rate and mute gpios.

Signed-off-by: Baswaraj K <[email protected]>
Reviewed-by: Deepak <[email protected]>
Reviewed-by: BabuSubashChandar <[email protected]>

ASoC: allo-boss-dac: fix S24_LE format

Remove set_bclk_ratio call so 24-bit data is transmitted in
24 bclk cycles.

Signed-off-by: Matthias Reichl <[email protected]>

ASoC: allo-boss-dac: transmit S24_LE with 64 BCLK cycles

Signed-off-by: Matthias Reichl <[email protected]>

allo-boss-dac: switch to snd_soc_dai_set_bclk_ratio

Signed-off-by: Matthias Reichl <[email protected]>

ASoC: allo-boss-dac: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

Support for Blokas Labs pisound board

Pisound dynamic overlay (#1760)

Restructuring pisound-overlay.dts, so it can be loaded and unloaded dynamically using dtoverlay.

Print a logline when the kernel module is removed.

pisound improvements:

* Added a writable sysfs object to enable scripts / user space software
to blink MIDI activity LEDs for variable duration.
* Improved hw_param constraints setting.
* Added compatibility with S16_LE sample format.
* Exposed some simple placeholder volume controls, so the card appears
in volumealsa widget.

Add missing SND_PISOUND selects dependency to SND_RAWMIDI

Without it the Pisound module fails to compile.
See #2366

Updates for Pisound module code:

	* Merged 'Fix a warning in DEBUG builds' (1c8b82b).
	* Updating some strings and copyright information.
	* Fix for handling high load of MIDI input and output.
	* Use dual rate oversampling ratio for 96kHz instead of single
	  rate one.

Signed-off-by: Giedrius Trainavicius <[email protected]>

Fixing memset call in pisound.c

Signed-off-by: Giedrius Trainavicius <[email protected]>

Fix for Pisound's MIDI Input getting blocked for a while in rare cases.

There was a possible race condition which could lead to Input's FIFO queue
to be underflown, causing high amount of processing in the worker thread for
some period of time.

Signed-off-by: Giedrius Trainavicius <[email protected]>

Fix for Pisound kernel module in Real Time kernel configuration.

When handler of data_available interrupt is fired, queue_work ends up
getting called and it can block on a spin lock which is not allowed in
interrupt context. The fix was to run the handler from a thread context
instead.

Pisound: Remove spinlock usage around spi_sync

ASoC: pisound: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

ASoC: pisound: fix the parameter for spi_device_match

Signed-off-by: Hui Wang <[email protected]>

ASoC: Add driver for Cirrus Logic Audio Card

Note: due to problems with deferred probing of regulators
the following softdep should be added to a modprobe.d file

softdep arizona-spi pre: arizona-ldo1

Signed-off-by: Matthias Reichl <[email protected]>

ASoC: rpi-cirrus: use modern dai_link style

Signed-off-by: Matthias Reichl <[email protected]>

sound: Support for Dion Audio LOCO-V2 DAC-AMP HAT

Signed-off-by: Miquel Blauw <[email protected]>

ASoC: dionaudio_loco-v2: fix S24_LE format

Remove set_bclk_ratio call so 24-bit data is transmitted in
24 bclk cycles.

Also remove hw_params and ops as they are no longer needed.

Signed-off-by: Matthias Reichl <[email protected]>

ASoC: dionaudio_loco-v2: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

Add support for Fe-Pi audio sound card. (#1867)

Fe-Pi Audio Sound Card is based on NXP SGTL5000 codec.
Mechanical specification of the board is the same the Raspberry Pi Zero.
3.5mm jacks for Headphone/Mic, Line In, and Line Out.

Signed-off-by: Henry Kupis <[email protected]>

ASoC: fe-pi-audio: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

Add support for the AudioInjector.net Octo sound card

AudioInjector Octo: sample rates, regulators, reset

This patch adds new sample rates to the Audioinjector Octo sound card. The
new supported rates are (in kHz) :
96, 48, 32, 24, 16, 8, 88.2, 44.1, 29.4, 22.05, 14.7

Reference the bcm270x DT regulators in the overlay.

This patch adds a reset GPIO for the AudioInjector.net octo sound card.

Audioinjector octo : Make the playback and capture symmetric

This patch ensures that the sample rate and channel count of the audioinjector
octo sound card are symmetric.

audioinjector-octo: Add continuous clock feature

By user request, add a switch to prevent the clocks being stopped when
the stream is paused, stopped or shutdown. Provide access to the switch
by adding a 'non-stop-clocks' parameter to the audioinjector-addons
overlay.

See: #2409

Signed-off-by: Phil Elwell <[email protected]>

sound: Fixes for audioinjector-octo under 4.19

1. Move the DT alias declaration to the I2C shim in the cases
where the shim is enabled. This works around a problem caused by a
4.19 commit [1] that generates DT/OF uevents for I2C drivers.

2. Fix the diagnostics in an error path of the soundcard driver to
correctly identify the reason for the failure to load.

3. Move the declaration of the clock node in the overlay outside
the I2C node to avoid warnings.

4. Sort the overlay nodes so that dependencies are only to earlier
fragments, in an attempt to get runtime dtoverlay application to
work (it still doesn't...)

See: Audio-Injector/Octo#14
Signed-off-by: Phil Elwell <[email protected]>

[1] af50371 ("i2c: core: report OF style module alias for devices registered via OF")

ASoC: audioinjector-octo-soundcard: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

Driver support for Google voiceHAT soundcard.

ASoC: googlevoicehat-codec: Use correct device when grabbing GPIO

The fixup for the VoiceHAT in 4.18 incorrectly tried to find the
sdmode GPIO pin under the card device, not the codec device.
This failed, and therefore caused the device probe to fail.

Signed-off-by: Dave Stevenson <[email protected]>

ASoC: googlevoicehat-codec: Reformat for kernel coding standards

Fix all whitespace, indentation, and bracing errors.

Signed-off-by: Dave Stevenson <[email protected]>

ASoC: googlevoicehat-codec: Make driver function structure const

Make voicehat_component_driver a const structure.

Signed-off-by: Dave Stevenson <[email protected]>

ASoC: googlevoicehat-codec: Only convert from ms to jiffies once

Minor optimisation and allows to become checkpatch clean.
A msec value is read out of DT or from a define, and convert once to
jiffies, rather than every time that it is used.

Signed-off-by: Dave Stevenson <[email protected]>

Driver and overlay for Allo Katana DAC

Allo Katana DAC: Updated default values

Signed-off-by: Jaikumar <[email protected]>

Added mute stream func

Signed-off-by: Jaikumar <[email protected]>

codecs: Correct Katana minimum volume

Update Katana minimum volume to get the exact 0.5 dB value in each step.

Signed-off-by: Sudeep Kumar <[email protected]>

ASoC: Add generic RPI driver for simple soundcards.

The RPI simple sound card driver provides a generic ALSA SOC card driver
supporting a variety of Pi HAT soundcards. The intention is to avoid
the duplication of code for cards that can't be fully supported by
the soc simple/graph cards but are otherwise almost identical.

This initial commit adds support for the ADAU1977 ADC, Google VoiceHat,
HifiBerry AMP, HifiBerry DAC and RPI DAC.

Signed-off-by: Tim Gover <[email protected]>

ASoC: Use correct card name in rpi-simple driver

Use the specific card name from drvdata instead of the snd_rpi_simple

rpi-simple-soundcard: Use nicer driver name "RPi-simple"

Rename the driver from "RPI simple soundcard" to "RPi-simple" so that
the driver name won't be mangled allowing to be used unaltered as the
card conf filename.

ASoC: rpi-simple-soundcard: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

ASoC: Add Kconfig and Makefile for sound/soc/bcm

Signed-off-by: popcornmix <[email protected]>

ASoC: Create a generic Pi Hat WM8804 driver

Reduce the amount of duplicated code by creating a generic driver for
Pi Hat digi cards using the WM8804 codec.

This replaces the
Allo DigiOne, Hifiberry Digi/Pro, JustBoom Digi and IQAudIO Digi
dedicate soundcard drivers with a generic driver.

There are no significant changes to the runtime behavior of the drivers
and end users should not have to change any configuration settings
after upgrading.

Minor changes
* Check the return value of snd_soc_component_update_bits
* Added some pr_debug tracing
* Various checkpatch tidyups
* Updated allodigi-one to use use 128FS at > 96 Khz. This appears to
  be an omission in the original driver code so followed the Hifiberry
  DAC driver approach.

ASoC: rpi-wm8804-soundcard: use modern dai_link style

Signed-off-by: Matthias Reichl <[email protected]>

rpi-wm8804-soundcard: drop PWRDN register writes

Since kernel 4.0 the PWRDN register bits are under DAPM
control from the wm8804 driver.

Drop code that modifies that register to avoid interfering
with DAPM.

Signed-off-by: Matthias Reichl <[email protected]>

rpi-wm8804-soundcard: configure wm8804 clocks only on rate change

This should avoid clicks when stopping and immediately afterwards
starting a stream with the same samplerate as before.

Signed-off-by: Matthias Reichl <[email protected]>

rpi-wm8804-soundcard: Fixed MCLKDIV for Allo Digione

The Allo Digione board wants a fixed MCLKDIV of 256.

See: #3296

Signed-off-by: Phil Elwell <[email protected]>

ASoC: Add support for AudioSense-Pi add-on soundcard

AudioSense-Pi is a RPi HAT based on a TI's TLV320AIC32x4 stereo codec

This hardware provides multiple audio I/O capabilities to the RPi.
The codec connects to the RPi's SoC through the I2S Bus.

The following devices can be connected through a 3.5mm jack
	1. Line-In: Plain old audio in from mobile phones, PCs, etc.,
	2. Mic-In: Connect a microphone
	3. Line-Out: Connect the output to a speaker
	4. Headphones: Connect a Headphone w or w/o microphones

Multiple Inputs:
	It supports the following combinations
	1. Two stereo Line-Inputs and a microphone
	2. One stereo Line-Input and two microphones
	3. Two stereo Line-Inputs, a microphone and
		one mono line-input (with h/w hack)
	4. One stereo Line-Input, two microphones and
		one mono line-input (with h/w hack)

Multiple Outputs:
	Audio output can be routed to the headphones or
		speakers (with additional hardware)

Signed-off-by: b-ak <[email protected]>

ASoC: audiosense-pi: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

Added driver for the HiFiBerry DAC+ ADC (#2694)

Signed-off-by: Daniel Matuschek <[email protected]>

hifiberry_dacplusadc: switch to snd_soc_dai_set_bclk_ratio

Signed-off-by: Matthias Reichl <[email protected]>

ASoC: hifiberry_dacplusadc: fix DAI link setup

The driver only defines a single DAI link and the code that tries
to setup the second (non-existent) DAI link looks wrong - using dmic
as a CPU/platform driver doesn't make any sense.

The DT overlay doesn't define a dmic property, so the code was never
executed (otherwise it would have resulted in a memory corruption).

So drop the offending code to prevent issues if a dmic property
should be added to the DT overlay.

Signed-off-by: Matthias Reichl <[email protected]>

ASoC: hifiberry_dacplusadc: use modern dai_link style

Signed-off-by: Matthias Reichl <[email protected]>

Audiophonics I-Sabre 9038Q2M DAC driver

Signed-off-by: Audiophonics <[email protected]>

ASoC: i-sabre-q2m: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

Added IQaudIO Pi-Codec board support (#2969)

Add support for the IQaudIO Pi-Codec board.

Signed-off-by: Gordon <[email protected]>

Fixed 48k timing issue

ASoC: iqaudio-codec: use modern dai_link style

Signed-off-by: Hui Wang <[email protected]>

adds the Hifiberry DAC+ADC PRO version

This adds the driver for the DAC+ADC PRO version of the Hifiberry soundcard with software controlled PCM1863 ADC
Signed-off-by: Joerg Schambacher [email protected]

Add Hifiberry DAC+DSP soundcard driver (#3224)

Adds the driver for the Hifiberry DAC+DSP. It supports capture and
playback depending on the DSP firmware.

Signed-off-by: Joerg Schambacher <[email protected]>

Allow simultaneous use of JustBoom DAC and Digi

Signed-off-by: Johannes Krude <[email protected]>

Pisound: MIDI communication fixes for scaled down CPU.

* Increased maximum SPI communication speed to avoid running too slow
  when the CPU is scaled down and losing MIDI data.

* Keep track of buffer usage in millibytes for higher precision.

Signed-off-by: Giedrius Trainavičius <[email protected]>

sound: Add the HiFiBerry DAC+HD version

This adds the driver for the DAC+HD version supporting HiFiBerry's
PCM179x based DACs. It also adds PLL control for clock generation.

Signed-off-by: Joerg Schambacher <[email protected]>

Fix master mode settings of HiFiBerry DAC+ADC PRO card (#3424)

This patch fixes the board DAI setting when in master-mode.
Wrong setting could have caused random pop noise.

Signed-off-by: Joerg Schambacher <[email protected]>

adds LED OFF feature to HiFiBerry DAC+ADC PRO sound card

This adds a DT overlay parameter 'leds_off' which allows
to switch off the onboard activity LEDs at all times
which has been requested by some users.

Signed-off-by: Joerg Schambacher <[email protected]>

adds LED OFF feature to HiFiBerry DAC+ADC sound card

This adds a DT overlay parameter 'leds_off' which allows
to switch off the onboard activity LEDs at all times
which has been requested by some users.

Signed-off-by: Joerg Schambacher <[email protected]>

adds LED OFF feature to HiFiBerry DAC+/DAC+PRO sound cards

This adds a DT overlay parameter 'leds_off' which allows
to switch off the onboard activity LEDs at all times
which has been requested by some users.

Signed-off-by: Joerg Schambacher <[email protected]>

pisound: Added reading Pisound board hardware revision and exposing it (#3425)

pisound: Added reading Pisound board hardware revision and exposing it in kernel log and sysfs file:

/sys/kernel/pisound/hw_version

Signed-off-by: Giedrius <[email protected]>

Added driver for HiFiBerry Amp amplifier add-on board

The driver contains a low-level hardware driver for the TAS5713 and the
drivers for the Raspberry Pi I2S subsystem.

TAS5713: return error if initialisation fails

Existing TAS5713 driver logs errors during initialisation, but does not return
an error code. Therefore even if initialisation fails, the driver will still be
loaded, but won't work. This patch fixes this. I2C communication error will now
reported correctly by a non-zero return code.

HiFiBerry Amp: fix device-tree problems

Some code to load the driver based on device-tree-overlays was missing. This is added by this patch.

According to 5713 pdf doc CLOCK_CTRL is a readonly status register, and it behaves so. Remove useless setting

sound: pcm512x-codec: Adding 352.8kHz samplerate support

sound/soc: only first codec is master in multicodec setup

When using multiple codecs, at most one codec should generate the master
clock. All codecs except the first are therefore configured for slave
mode.

Signed-off-by: Johannes Krude <[email protected]>

ASoC: Fix snd_soc_get_pcm_runtime usage

Commit [1] changed the snd_soc_get_pcm_runtime to take a dai_link
pointer instead of a string. Patch up the downstream drivers to use
the modified API.

Signed-off-by: Phil Elwell <[email protected]>

[1] 4468189 ("ASoC: soc-core: find rtd via dai_link pointer at snd_soc_get_pcm_runtime()")

Add support for the AudioInjector.net Isolated sound card

This patch adds support for the Audio Injector Isolated sound card.

Signed-off-by: Matt Flax <[email protected]>

Add support for merus-amp soundcard and ma120x0p codec

Add 96KHz rate support to MA120X0P codec and make enable and mute gpio
pins optional.

Signed-off-by: AMuszkat <[email protected]>

Fixes a problem with clock settings of HiFiBerry DAC+ADC PRO (#3545)

This patch fixes a problem of the re-calculation of
i2s-clock and -parameter settings when only the ADC is activated.

Signed-off-by: Joerg Schambacher <[email protected]>

configs: Enable the AD193x codecs

See: #2850

Signed-off-by: Phil Elwell <[email protected]>

Switch to snd_soc_dai_set_bclk_ratio
Replaces obsolete function snd_soc_dai_set_tdm_slot

Signed-off-by: Joerg Schambacher <[email protected]>

Enhances the DAC+ driver to control the optional headphone amplifier

Probes on the I2C bus for TPA6130A2, if successful, it sets DT-parameter
'status' from 'disabled' to 'okay' using change_sets to enable
the headphone control.

Signed-off-by: Joerg Schambacher [email protected]

Update Allo Piano Dac Driver

Add unique names to the individual dac coded drivers
Remove some of the codec controls that are not used.

Signed-off-by: Paul Hermann <[email protected]>

Fixes an onboard clock detection problem of the PRO versions

Increasing the sleep time after clock selection to 3-4ms
allows the correct detection of all combinations of DAC+ Pro
and DAC+ADC Pro sound cards and the various PI revisions.

Signed-off-by: Joerg Schambacher <[email protected]>

ASoC:ma120x0p: Increase maximum sample rate to 192KHz

Change the maximum sample rate for the amplifier to
192KHz as given in the Infineon specification.

Signed-off-by: Joerg Schambacher <[email protected]>

ASoC: ma120x0p: Remove unnecessary const specifier

Clang warns:

  sound/soc/codecs/ma120x0p.c:891:14: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]
  static const SOC_VALUE_ENUM_SINGLE_DECL(pwr_mode_ctrl,
               ^
  ./include/sound/soc.h:362:2: note: expanded from macro 'SOC_VALUE_ENUM_SINGLE_DECL'
          SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues)
          ^
  ./include/sound/soc.h:359:2: note: expanded from macro 'SOC_VALUE_ENUM_DOUBLE_DECL'
          const struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \
          ^
  1 warning generated.

SOC_VALUE_ENUM_DOUBLE_DECL already has a const specifier. Remove the duplicate
const to clean up the warning.

Fixes: 4244497 ("Add support for all the downstream rpi sound card drivers")
Signed-off-by: Nathan Chancellor <[email protected]>

ASoC: bcm: allo-piano-dac-plus: Remove unnecessary const specifiers

Clang warns:

  sound/soc/bcm/allo-piano-dac-plus.c:66:14: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]
  static const SOC_ENUM_SINGLE_DECL(allo_piano_mode_enum,
               ^
  ./include/sound/soc.h:355:2: note: expanded from macro 'SOC_ENUM_SINGLE_DECL'
          SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
          ^
  ./include/sound/soc.h:352:2: note: expanded from macro 'SOC_ENUM_DOUBLE_DECL'
          const struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
          ^
  sound/soc/bcm/allo-piano-dac-plus.c:75:14: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]
  static const SOC_ENUM_SINGLE_DECL(allo_piano_dual_mode_enum,
               ^
  ./include/sound/soc.h:355:2: note: expanded from macro 'SOC_ENUM_SINGLE_DECL'
          SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
          ^
  ./include/sound/soc.h:352:2: note: expanded from macro 'SOC_ENUM_DOUBLE_DECL'
          const struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
          ^
  sound/soc/bcm/allo-piano-dac-plus.c:96:14: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]
  static const SOC_ENUM_SINGLE_DECL(allo_piano_enum,
               ^
  ./include/sound/soc.h:355:2: note: expanded from macro 'SOC_ENUM_SINGLE_DECL'
          SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
          ^
  ./include/sound/soc.h:352:2: note: expanded from macro 'SOC_ENUM_DOUBLE_DECL'
          const struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
          ^
  3 warnings generated.

SOC_VALUE_ENUM_DOUBLE_DECL already has a const specifier. Remove the duplicate
const specifiers to clean up the warnings.

Fixes: 4244497 ("Add support for all the downstream rpi sound card drivers")
Signed-off-by: Nathan Chancellor <[email protected]>

rpi-simple-soundcard: Add Dion Audio KIWI streamer

Signed-off-by: Miquel Blauw <[email protected]>

rpi-simple-soundcard: adds definitions for the HiFiBerry AMP3 card

Uses Infineon MA120x0 amplifier and supports full sample rate of 192ksps.

Signed-off-by: Joerg Schambacher <[email protected]>

sound: soc: bcm: Added Sound card driver for Dacberry400 Audio card for Raspberry Pi 400

Added Sound card driver for DACberry400 Audio card.

Signed-off-by: Ashish Vara <[email protected]>

ASoC:ma120x0p: Corrects the volume level display

Fixes the wrongly changed 'limiter volume' display back to -50dB minimum
and sets the correct minimum volume level to -144dB to be aligned with
the controls and display in alsamixer etc.

Signed-off-by: Joerg Schambacher <[email protected]>

ASoC: bcm: Fix Rpi-PROTO and audioinjector.net Pi

As of kernel 5.19 the WM8731 driver has separate I2C and SPI support
modules. Change the Kconfig definitions for the audioinjector.net Pi
and Rpi-PROTO soundcards to select SND_SOC_WM8731_I2C.

See: #5364

Signed-off-by: Phil Elwell <[email protected]>

ASoC: adau1977: Add correct compatible strings

Signed-off-by: Phil Elwell <[email protected]>

ASoC: bcm2835-i2s: Use phys addresses for DAI DMA

Contrary to what struct snd_dmaengine_dai_dma_data suggests, the
configuration of addresses of DMA slave interfaces should be done in
CPU physical addresses.

Signed-off-by: Phil Elwell <[email protected]>

rpi sound cards: Fix Codec Zero rate switching

The Raspberry Pi Codec Zero (and IQaudIO Codec) don't notify the DA7213
codec when it needs to change PLL frequencies. As a result, audio can
be played at the wrong rate - play a 48kHz sound immediately after a
44.1kHz sound to see the effect, but in some configurations the codec
can lock into the wrong state and always get some rates wrong.

Add the necessary notification to fix the issue.

Signed-off-by: Phil Elwell <[email protected]>

ASoC: dwc: Support set_bclk_ratio

Signed-off-by: Phil Elwell <[email protected]>

ASoC: dwc: Add DMACR handling

Add control of the DMACR register, which is required for paced DMA
(i.e. DREQ) support.

Signed-off-by: Phil Elwell <[email protected]>

ASOC: dwc: Improve DMA shutdown

Disabling the I2S interface with outstanding transfers prevents the
DMAC from shutting down, so keep it partially active after a stop.

Signed-off-by: Phil Elwell <[email protected]>

ASOC: dwc: Fix 16-bit audio handling

IMO the Synopsys datasheet could be clearer in this area, but it seems
that the DMA data ports (DMATX and DMARX) expect left and right samples
in alternate writes; if a stereo pair is pushed in a single 32-bit
write, the upper half is ignored, leading to double speed audio with a
confused stereo image. Make sure the necessary changes happen by
updating the DMA configuration data in the hw_params method.

The set_bclk_ratio change was made at a time when it looked like it
could be causing an error, but I think the division of responsibilities
is clearer this way (and the kernel log clearer without the info-level
message).

Signed-off-by: Phil Elwell <[email protected]>

ASoC: bcm: Remove dependency on BCM2835 I2S

These soundcard drivers don't rely on a specific I2S interface, so
remove the dependency declarations.

See: raspberrypi/linux-2712#111

Signed-off-by: Phil Elwell <[email protected]>

ASoC: bcm: audioinjector_octo: Add soundcard "owner"

See: #5697

Signed-off-by: Phil Elwell <[email protected]>

Pisound: Don't export the button GPIO via sysfs GPIO class.

Signed-off-by: Giedrius Trainavičius <[email protected]>

Pisound: Read out the SPI speed to use from the Device Tree.

Signed-off-by: Giedrius Trainavičius <[email protected]>

ASoC: DACplus - fix 16bit sample support in clock consumer mode

The former code did not adjust the physical sample width when
in clock consumer mode and has taken the fixed 32 bit default.
This has caused the audio to be played at half its frequency due to
the fixed bclk_ratio of 64.

Signed-off-by: Joerg Schambacher <[email protected]>

ASoC: adds support for AMP4 Pro to the DAC Plus driver

The AMP4 Pro is a I2S master mode capable amplifier with
clean onboard clock generators.
We can share the card driver between TAS575x amplifiers
and the PCM512x DACs as they are SW compatible.
From a HW perspective though we need to limit the sample
rates to the standard audio rates to avoid running the
onboard clocks through the PLL. Using the PLL would require
even a different HW.
DAI/stream name are also set accordingly to allow the user
a convenient identification of the soundcard

Needs the pcm512x driver with TAS575x support (already in
upstream kernel).

Signed-off-by: Joerg Schambacher <[email protected]>

ASoC: DACplusADCPro - fix 16bit sample support in clock consumer mode

The former code did not adjust the physical sample width when in
clock consumer mode and has taken the fixed 32 bit default. This
has caused the audio to be played at half its frequency due to
the fixed bclk_ratio of 64.

Problem appears only on PI5 as on the former PIs the I2S module
did simply run at fixed 64x rate.

Signed-off-by: Joerg Schambacher <[email protected]>

Impliment driver support for Interlude Audio Digital Hat

Implementing driver support for
Interlude audio's WM8805 based digital hat
by leveraging existing drivers

ASOc: Add HiFiBerry DAC8X to the simple card driver

Defines the settings for the 8 channel version of the standard
DAC by overwriting the number of channels in the DAI defs.
It can run in 8ch mode only on PI5 using the 4 lane data output
of the designware I2S0 module.

Signed-off-by: j-schambacher <[email protected]>

ASoC: bcm: Use the correct sample width value

ALSA's concept of the physical width of a sample is how much memory it
occupies, including any padding. This not the same as the count of bits
of actual sample content. In particular, S24_LE has a width of 24 bits
but a physical width of 32 bits because there is a byte of padding with
each sample.

When calculating bclk_ratio, etc., it is width that matters, not
physical width. Correct the error that has been replicated across the
drivers for many Raspberry Pi-compatible soundcards.

Signed-off-by: Phil Elwell <[email protected]>

ASoC: dwc: Correct channel count reporting

The DWC I2S driver treats the channel count register values as if they
encode a power of two (2, 4, 8, 16), but they actually encode a
multiple of 2 (2, 4, 6, 8).

Also improve the error message when asked for an unsupported number
of channels.

Signed-off-by: Phil Elwell <[email protected]>

ASoC: Fix 16bit sample support for Hifiberry DACplusADC

Same issue as #5919.
'width' needs to be set independent of clocking mode.

Signed-off-by: j-schambacher <[email protected]>

allo-boss-dac mute output when changing parameters

Since I noticed that sometimes changing sample rates causes some digital
quirks and noises, I've changed the function to mute the output before
performing the changes and then unmute it when an error occurs or the
parameters got set.

Signed-off-by: Alessandro Marcon <[email protected]>

ASoC: bcm: Use power-of-2 bclk_ratios

The soundcard drivers originally used snd_pcm_format_physical_width,
but a later commit changed that to snd_pcm_format_width because the
in-memory sample storage width should not be a factor in determining
the bclk_ratio. However, the physical width rounds the sample bits up
to the nearest power of 2, which makes it easier to find integer clock
divisors.

Restore the old behaviour, but with an implementation that makes it
clear what is going on.

See: #6104

Signed-off-by: Phil Elwell <[email protected]>

ASoC: bcm: Add "owner" info for more soundcards

See: #5697

Signed-off-by: Phil Elwell <[email protected]>

ASoC: da7213: Add a set_bclk_ratio method

Following [1], it becomes harder for the CPU DAI to know the correct
BCLK ratio. We can either bake the same knowledge into the sound card
driver, or implement and use set_bclk_ratio on the codec. This commit
does the latter.

[1] commit c89e652 ("ASoC: da7213: Add support for mono, set
frame width to 32 when possible")

Signed-off-by: Phil Elwell <[email protected]>

iqaudio-codec: Use the codec's new set_bclk_ratio

To ensure that the CPU DAI and codec agree over the BCLK ratio, impose
a fixed value of 64 on both of them.

Signed-off-by: Phil Elwell <[email protected]>
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koalo authored and popcornmix committed Oct 17, 2024
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463 changes: 463 additions & 0 deletions Documentation/devicetree/bindings/vendor-prefixes.txt

Large diffs are not rendered by default.

2 changes: 2 additions & 0 deletions Documentation/devicetree/bindings/vendor-prefixes.yaml
Original file line number Diff line number Diff line change
Expand Up @@ -216,6 +216,8 @@ patternProperties:
description: Shenzhen BigTree Tech Co., LTD
"^bitmain,.*":
description: Bitmain Technologies
"^blokaslabs,.*":
description: Vilniaus Blokas UAB
"^blutek,.*":
description: BluTek Power
"^boe,.*":
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6 changes: 6 additions & 0 deletions drivers/clk/Kconfig
Original file line number Diff line number Diff line change
Expand Up @@ -98,6 +98,12 @@ config COMMON_CLK_HI655X
multi-function device has one fixed-rate oscillator, clocked
at 32KHz.

config COMMON_CLK_HIFIBERRY_DACPLUSHD
tristate

config COMMON_CLK_HIFIBERRY_DACPRO
tristate

config COMMON_CLK_SCMI
tristate "Clock driver controlled via SCMI interface"
depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
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2 changes: 2 additions & 0 deletions drivers/clk/Makefile
Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,8 @@ obj-$(CONFIG_COMMON_CLK_LAN966X) += clk-lan966x.o
obj-$(CONFIG_COMMON_CLK_LOCHNAGAR) += clk-lochnagar.o
obj-$(CONFIG_MACH_LOONGSON32) += clk-loongson1.o
obj-$(CONFIG_COMMON_CLK_LOONGSON2) += clk-loongson2.o
obj-$(CONFIG_COMMON_CLK_HIFIBERRY_DACPRO) += clk-hifiberry-dacpro.o
obj-$(CONFIG_COMMON_CLK_HIFIBERRY_DACPLUSHD) += clk-hifiberry-dachd.o
obj-$(CONFIG_COMMON_CLK_MAX77686) += clk-max77686.o
obj-$(CONFIG_COMMON_CLK_MAX9485) += clk-max9485.o
obj-$(CONFIG_ARCH_MILBEAUT_M10V) += clk-milbeaut.o
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331 changes: 331 additions & 0 deletions drivers/clk/clk-hifiberry-dachd.c
Original file line number Diff line number Diff line change
@@ -0,0 +1,331 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Clock Driver for HiFiBerry DAC+ HD
*
* Author: Joerg Schambacher, i2Audio GmbH for HiFiBerry
* Copyright 2020
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/

#include <linux/clk-provider.h>
#include <linux/clk.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/regmap.h>

#define NO_PLL_RESET 0
#define PLL_RESET 1
#define HIFIBERRY_PLL_MAX_REGISTER 256
#define DEFAULT_RATE 44100

static struct reg_default hifiberry_pll_reg_defaults[] = {
{0x02, 0x53}, {0x03, 0x00}, {0x07, 0x20}, {0x0F, 0x00},
{0x10, 0x0D}, {0x11, 0x1D}, {0x12, 0x0D}, {0x13, 0x8C},
{0x14, 0x8C}, {0x15, 0x8C}, {0x16, 0x8C}, {0x17, 0x8C},
{0x18, 0x2A}, {0x1C, 0x00}, {0x1D, 0x0F}, {0x1F, 0x00},
{0x2A, 0x00}, {0x2C, 0x00}, {0x2F, 0x00}, {0x30, 0x00},
{0x31, 0x00}, {0x32, 0x00}, {0x34, 0x00}, {0x37, 0x00},
{0x38, 0x00}, {0x39, 0x00}, {0x3A, 0x00}, {0x3B, 0x01},
{0x3E, 0x00}, {0x3F, 0x00}, {0x40, 0x00}, {0x41, 0x00},
{0x5A, 0x00}, {0x5B, 0x00}, {0x95, 0x00}, {0x96, 0x00},
{0x97, 0x00}, {0x98, 0x00}, {0x99, 0x00}, {0x9A, 0x00},
{0x9B, 0x00}, {0xA2, 0x00}, {0xA3, 0x00}, {0xA4, 0x00},
{0xB7, 0x92},
{0x1A, 0x3D}, {0x1B, 0x09}, {0x1E, 0xF3}, {0x20, 0x13},
{0x21, 0x75}, {0x2B, 0x04}, {0x2D, 0x11}, {0x2E, 0xE0},
{0x3D, 0x7A},
{0x35, 0x9D}, {0x36, 0x00}, {0x3C, 0x42},
{ 177, 0xAC},
};
static struct reg_default common_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
static int num_common_pll_regs;
static struct reg_default dedicated_192k_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
static int num_dedicated_192k_pll_regs;
static struct reg_default dedicated_96k_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
static int num_dedicated_96k_pll_regs;
static struct reg_default dedicated_48k_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
static int num_dedicated_48k_pll_regs;
static struct reg_default dedicated_176k4_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
static int num_dedicated_176k4_pll_regs;
static struct reg_default dedicated_88k2_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
static int num_dedicated_88k2_pll_regs;
static struct reg_default dedicated_44k1_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
static int num_dedicated_44k1_pll_regs;

/**
* struct clk_hifiberry_drvdata - Common struct to the HiFiBerry DAC HD Clk
* @hw: clk_hw for the common clk framework
*/
struct clk_hifiberry_drvdata {
struct regmap *regmap;
struct clk *clk;
struct clk_hw hw;
unsigned long rate;
};

#define to_hifiberry_clk(_hw) \
container_of(_hw, struct clk_hifiberry_drvdata, hw)

static int clk_hifiberry_dachd_write_pll_regs(struct regmap *regmap,
struct reg_default *regs,
int num, int do_pll_reset)
{
int i;
int ret = 0;
char pll_soft_reset[] = { 177, 0xAC, };

for (i = 0; i < num; i++) {
ret |= regmap_write(regmap, regs[i].reg, regs[i].def);
if (ret)
return ret;
}
if (do_pll_reset) {
ret |= regmap_write(regmap, pll_soft_reset[0],
pll_soft_reset[1]);
mdelay(10);
}
return ret;
}

static unsigned long clk_hifiberry_dachd_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
return to_hifiberry_clk(hw)->rate;
}

static long clk_hifiberry_dachd_round_rate(struct clk_hw *hw,
unsigned long rate, unsigned long *parent_rate)
{
return rate;
}

static int clk_hifiberry_dachd_set_rate(struct clk_hw *hw,
unsigned long rate, unsigned long parent_rate)
{
int ret;
struct clk_hifiberry_drvdata *drvdata = to_hifiberry_clk(hw);

switch (rate) {
case 44100:
ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
dedicated_44k1_pll_regs, num_dedicated_44k1_pll_regs,
PLL_RESET);
break;
case 88200:
ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
dedicated_88k2_pll_regs, num_dedicated_88k2_pll_regs,
PLL_RESET);
break;
case 176400:
ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
dedicated_176k4_pll_regs, num_dedicated_176k4_pll_regs,
PLL_RESET);
break;
case 48000:
ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
dedicated_48k_pll_regs, num_dedicated_48k_pll_regs,
PLL_RESET);
break;
case 96000:
ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
dedicated_96k_pll_regs, num_dedicated_96k_pll_regs,
PLL_RESET);
break;
case 192000:
ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
dedicated_192k_pll_regs, num_dedicated_192k_pll_regs,
PLL_RESET);
break;
default:
ret = -EINVAL;
break;
}
to_hifiberry_clk(hw)->rate = rate;

return ret;
}

const struct clk_ops clk_hifiberry_dachd_rate_ops = {
.recalc_rate = clk_hifiberry_dachd_recalc_rate,
.round_rate = clk_hifiberry_dachd_round_rate,
.set_rate = clk_hifiberry_dachd_set_rate,
};

static int clk_hifiberry_get_prop_values(struct device *dev,
char *prop_name,
struct reg_default *regs)
{
int ret;
int i;
u8 tmp[2 * HIFIBERRY_PLL_MAX_REGISTER];

ret = of_property_read_variable_u8_array(dev->of_node, prop_name,
tmp, 0, 2 * HIFIBERRY_PLL_MAX_REGISTER);
if (ret < 0)
return ret;
if (ret & 1) {
dev_err(dev,
"%s <%s> -> #%i odd number of bytes for reg/val pairs!",
__func__,
prop_name,
ret);
return -EINVAL;
}
ret /= 2;
for (i = 0; i < ret; i++) {
regs[i].reg = (u32)tmp[2 * i];
regs[i].def = (u32)tmp[2 * i + 1];
}
return ret;
}


static int clk_hifiberry_dachd_dt_parse(struct device *dev)
{
num_common_pll_regs = clk_hifiberry_get_prop_values(dev,
"common_pll_regs", common_pll_regs);
num_dedicated_44k1_pll_regs = clk_hifiberry_get_prop_values(dev,
"44k1_pll_regs", dedicated_44k1_pll_regs);
num_dedicated_88k2_pll_regs = clk_hifiberry_get_prop_values(dev,
"88k2_pll_regs", dedicated_88k2_pll_regs);
num_dedicated_176k4_pll_regs = clk_hifiberry_get_prop_values(dev,
"176k4_pll_regs", dedicated_176k4_pll_regs);
num_dedicated_48k_pll_regs = clk_hifiberry_get_prop_values(dev,
"48k_pll_regs", dedicated_48k_pll_regs);
num_dedicated_96k_pll_regs = clk_hifiberry_get_prop_values(dev,
"96k_pll_regs", dedicated_96k_pll_regs);
num_dedicated_192k_pll_regs = clk_hifiberry_get_prop_values(dev,
"192k_pll_regs", dedicated_192k_pll_regs);
return 0;
}


static int clk_hifiberry_dachd_remove(struct device *dev)
{
of_clk_del_provider(dev->of_node);
return 0;
}

const struct regmap_config hifiberry_pll_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = HIFIBERRY_PLL_MAX_REGISTER,
.reg_defaults = hifiberry_pll_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(hifiberry_pll_reg_defaults),
.cache_type = REGCACHE_RBTREE,
};
EXPORT_SYMBOL_GPL(hifiberry_pll_regmap);


static int clk_hifiberry_dachd_i2c_probe(struct i2c_client *i2c)
{
struct clk_hifiberry_drvdata *hdclk;
int ret = 0;
struct clk_init_data init;
struct device *dev = &i2c->dev;
struct device_node *dev_node = dev->of_node;
struct regmap_config config = hifiberry_pll_regmap;

hdclk = devm_kzalloc(&i2c->dev,
sizeof(struct clk_hifiberry_drvdata), GFP_KERNEL);
if (!hdclk)
return -ENOMEM;

i2c_set_clientdata(i2c, hdclk);

hdclk->regmap = devm_regmap_init_i2c(i2c, &config);

if (IS_ERR(hdclk->regmap))
return PTR_ERR(hdclk->regmap);

/* start PLL to allow detection of DAC */
ret = clk_hifiberry_dachd_write_pll_regs(hdclk->regmap,
hifiberry_pll_reg_defaults,
ARRAY_SIZE(hifiberry_pll_reg_defaults),
PLL_RESET);
if (ret)
return ret;

clk_hifiberry_dachd_dt_parse(dev);

/* restart PLL with configs from DTB */
ret = clk_hifiberry_dachd_write_pll_regs(hdclk->regmap, common_pll_regs,
num_common_pll_regs, PLL_RESET);
if (ret)
return ret;

init.name = "clk-hifiberry-dachd";
init.ops = &clk_hifiberry_dachd_rate_ops;
init.flags = 0;
init.parent_names = NULL;
init.num_parents = 0;

hdclk->hw.init = &init;

hdclk->clk = devm_clk_register(dev, &hdclk->hw);
if (IS_ERR(hdclk->clk)) {
dev_err(dev, "unable to register %s\n", init.name);
return PTR_ERR(hdclk->clk);
}

ret = of_clk_add_provider(dev_node, of_clk_src_simple_get, hdclk->clk);
if (ret != 0) {
dev_err(dev, "Cannot of_clk_add_provider");
return ret;
}

ret = clk_set_rate(hdclk->hw.clk, DEFAULT_RATE);
if (ret != 0) {
dev_err(dev, "Cannot set rate : %d\n", ret);
return -EINVAL;
}

return ret;
}

static void clk_hifiberry_dachd_i2c_remove(struct i2c_client *i2c)
{
clk_hifiberry_dachd_remove(&i2c->dev);
}

static const struct i2c_device_id clk_hifiberry_dachd_i2c_id[] = {
{ "dachd-clk", },
{ }
};
MODULE_DEVICE_TABLE(i2c, clk_hifiberry_dachd_i2c_id);

static const struct of_device_id clk_hifiberry_dachd_of_match[] = {
{ .compatible = "hifiberry,dachd-clk", },
{ }
};
MODULE_DEVICE_TABLE(of, clk_hifiberry_dachd_of_match);

static struct i2c_driver clk_hifiberry_dachd_i2c_driver = {
.probe = clk_hifiberry_dachd_i2c_probe,
.remove = clk_hifiberry_dachd_i2c_remove,
.id_table = clk_hifiberry_dachd_i2c_id,
.driver = {
.name = "dachd-clk",
.of_match_table = of_match_ptr(clk_hifiberry_dachd_of_match),
},
};

module_i2c_driver(clk_hifiberry_dachd_i2c_driver);


MODULE_DESCRIPTION("HiFiBerry DAC+ HD clock driver");
MODULE_AUTHOR("Joerg Schambacher <[email protected]>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:clk-hifiberry-dachd");
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