mirror of
https://github.com/brain-hackers/linux-brain.git
synced 2024-06-09 23:36:23 +09:00
126f7051b4
We've got many code additions at this cycle as a result of quite a few
new drivers. Below are highlights:
Core stuff:
- Fix the long-standing issue with the device registration order;
the control device is now registered at last
- PCM locking code cleanups for RT kernels
- Fixes for possible races in ALSA timer resolution accesses
- TLV offset definitions in uapi
ASoC:
- Many fixes for the topology stuff, including fixes for v4 ABI
compatibility
- Lots of cleanups / quirks for Intel platforms based on Realtek
CODECs
- Continued componentization works, removing legacy CODEC stuff
- Conversion of OMAP DMA to the new, more standard SDMA-PCM driver
- Fixes and updates to Cirrus Logic SoC drivers
- New Qualcomm DSP support
- New drivers for Analog SSM2305, Atmel I2S controllers, Mediatek
MT6351, MT6797 and MT7622, Qualcomm DSPs, Realtek RT1305, RT1306 and
RT5668 and TI TSCS454
HD-audio:
- Finally better support for some CA0132 boards, allowing Windows
firmware
- HP Spectre x360 support along with a bulk of COEF stuff
- Blacklisting power save default some known boards reported on Fedora
USB-audio:
- Continued improvements on UAC3 support; now BADD is supported
- Fixes / improvements for Dell WD15 dock
- Allow DMA coherent pages for PCM buffers for ARCH, MIPS & co
Others:
- New Xen sound frontend driver support
- Cache implementation and other improvements for FireWire DICE
- Conversions to octal permissions in allover places
-----BEGIN PGP SIGNATURE-----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=37hC
-----END PGP SIGNATURE-----
Merge tag 'sound-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"We've got many code additions at this cycle as a result of quite a few
new drivers. Below are highlights:
Core stuff:
- Fix the long-standing issue with the device registration order; the
control device is now registered at last
- PCM locking code cleanups for RT kernels
- Fixes for possible races in ALSA timer resolution accesses
- TLV offset definitions in uapi
ASoC:
- Many fixes for the topology stuff, including fixes for v4 ABI
compatibility
- Lots of cleanups / quirks for Intel platforms based on Realtek
CODECs
- Continued componentization works, removing legacy CODEC stuff
- Conversion of OMAP DMA to the new, more standard SDMA-PCM driver
- Fixes and updates to Cirrus Logic SoC drivers
- New Qualcomm DSP support
- New drivers for Analog SSM2305, Atmel I2S controllers, Mediatek
MT6351, MT6797 and MT7622, Qualcomm DSPs, Realtek RT1305, RT1306
and RT5668 and TI TSCS454
HD-audio:
- Finally better support for some CA0132 boards, allowing Windows
firmware
- HP Spectre x360 support along with a bulk of COEF stuff
- Blacklisting power save default some known boards reported on
Fedora
USB-audio:
- Continued improvements on UAC3 support; now BADD is supported
- Fixes / improvements for Dell WD15 dock
- Allow DMA coherent pages for PCM buffers for ARCH, MIPS & co
Others:
- New Xen sound frontend driver support
- Cache implementation and other improvements for FireWire DICE
- Conversions to octal permissions in allover places"
* tag 'sound-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (386 commits)
ASoC: dapm: delete dapm_kcontrol_data paths list before freeing it
ALSA: usb-audio: remove redundant check on err
ASoC: topology: Move skl-tplg-interface.h to uapi
ASoC: topology: Move v4 manifest header data structures to uapi
ASoC: topology: Improve backwards compatibility with v4 topology files
ALSA: pci/hda: Remove unused, broken, header file
ASoC: TSCS454: Add Support
ASoC: Intel: kbl: Move codec sysclk config to codec_init function
ASoC: simple-card: set cpu dai clk in hw_params
ALSA: hda - Handle kzalloc() failure in snd_hda_attach_pcm_stream()
ALSA: oxygen: use match_string() helper
ASoC: dapm: use match_string() helper
ASoC: max98095: use match_string() helper
ASoC: max98088: use match_string() helper
ASoC: Intel: bytcr_rt5651: Set card long_name based on quirks
ASoC: mt6797-mt6351: add hostless phone call path
ASoC: mt6797: add Hostless DAI
ASoC: mt6797: add PCM interface
ASoC: mediatek: export mtk-afe symbols as needed
ASoC: codecs: PCM1789: include gpio/consumer.h
...
79 lines
2.0 KiB
ReStructuredText
79 lines
2.0 KiB
ReStructuredText
====================
|
|
ASoC Platform Driver
|
|
====================
|
|
|
|
An ASoC platform driver class can be divided into audio DMA drivers, SoC DAI
|
|
drivers and DSP drivers. The platform drivers only target the SoC CPU and must
|
|
have no board specific code.
|
|
|
|
Audio DMA
|
|
=========
|
|
|
|
The platform DMA driver optionally supports the following ALSA operations:-
|
|
::
|
|
|
|
/* SoC audio ops */
|
|
struct snd_soc_ops {
|
|
int (*startup)(struct snd_pcm_substream *);
|
|
void (*shutdown)(struct snd_pcm_substream *);
|
|
int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
|
|
int (*hw_free)(struct snd_pcm_substream *);
|
|
int (*prepare)(struct snd_pcm_substream *);
|
|
int (*trigger)(struct snd_pcm_substream *, int);
|
|
};
|
|
|
|
The platform driver exports its DMA functionality via struct
|
|
snd_soc_component_driver:-
|
|
::
|
|
|
|
struct snd_soc_component_driver {
|
|
const char *name;
|
|
|
|
...
|
|
int (*probe)(struct snd_soc_component *);
|
|
void (*remove)(struct snd_soc_component *);
|
|
int (*suspend)(struct snd_soc_component *);
|
|
int (*resume)(struct snd_soc_component *);
|
|
|
|
/* pcm creation and destruction */
|
|
int (*pcm_new)(struct snd_soc_pcm_runtime *);
|
|
void (*pcm_free)(struct snd_pcm *);
|
|
|
|
...
|
|
const struct snd_pcm_ops *ops;
|
|
const struct snd_compr_ops *compr_ops;
|
|
...
|
|
};
|
|
|
|
Please refer to the ALSA driver documentation for details of audio DMA.
|
|
http://www.alsa-project.org/~iwai/writing-an-alsa-driver/
|
|
|
|
An example DMA driver is soc/pxa/pxa2xx-pcm.c
|
|
|
|
|
|
SoC DAI Drivers
|
|
===============
|
|
|
|
Each SoC DAI driver must provide the following features:-
|
|
|
|
1. Digital audio interface (DAI) description
|
|
2. Digital audio interface configuration
|
|
3. PCM's description
|
|
4. SYSCLK configuration
|
|
5. Suspend and resume (optional)
|
|
|
|
Please see codec.rst for a description of items 1 - 4.
|
|
|
|
|
|
SoC DSP Drivers
|
|
===============
|
|
|
|
Each SoC DSP driver usually supplies the following features :-
|
|
|
|
1. DAPM graph
|
|
2. Mixer controls
|
|
3. DMA IO to/from DSP buffers (if applicable)
|
|
4. Definition of DSP front end (FE) PCM devices.
|
|
|
|
Please see DPCM.txt for a description of item 4.
|