[v3,0/6] Add driver for SAMA7G5's PDMC

Message

Codrin Ciubotariu March 7, 2022, 12:21 p.m. UTC

This patch series adds support for Pulse Density Microphone Controller
(PDMC), present on Microchip's SAMA7G5.
The PDMC interfaces up to 4 digital microphones having Pulse Density
Modulated (PDM) outputs. It generates a single clock line and samples 1 or
2 data lines. The signal path includes an audio grade programmable
decimation filter and outputs 24-bit audio words.
The source of each channel can be independently defined as PDMC_DS0 or
PDMC_DS1, sampled at the rising or falling edge of PDMC_CLK.

The patch series starts with a fix on the ASoC DMA engine support. Then
continues with the bindings and the driver of PDMC. It is followed by the
DT nodes for SAMA7G5 and SAMA7G5-EK. In the end, the drivers for PDMC
and PDM microphones are enabled in sama7_defconfig.

Changes in v3:
 - addressed new DT bindings comments from Krzysztof Kozlowski

Changes in v2:
 - addressed DT bindings comments from Krzysztof Kozlowski

Codrin Ciubotariu (6):
  ASoC: dmaengine: do not use a NULL prepare_slave_config() callback
  ASoC: dt-bindings: Document Microchip's PDMC
  ASoC: atmel: mchp-pdmc: add PDMC driver
  ARM: dts: at91: sama7g5: add nodes for PDMC
  ARM: dts: at91: sama7g5ek: add node for PDMC0
  ARM: configs: at91: sama7_defconfig: add MCHP PDMC and DMIC drivers

 .../bindings/sound/microchip,pdmc.yaml        |  100 ++
 arch/arm/boot/dts/at91-sama7g5ek.dts          |   21 +-
 arch/arm/boot/dts/sama7g5.dtsi                |   24 +
 arch/arm/configs/sama7_defconfig              |    2 +
 include/dt-bindings/sound/microchip,pdmc.h    |   13 +
 sound/soc/atmel/Kconfig                       |   16 +
 sound/soc/atmel/Makefile                      |    2 +
 sound/soc/atmel/mchp-pdmc.c                   | 1084 +++++++++++++++++
 sound/soc/soc-generic-dmaengine-pcm.c         |    6 +-
 9 files changed, 1264 insertions(+), 4 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/sound/microchip,pdmc.yaml
 create mode 100644 include/dt-bindings/sound/microchip,pdmc.h
 create mode 100644 sound/soc/atmel/mchp-pdmc.c

Comments

Mark Brown March 8, 2022, 5:21 p.m. UTC | #1

On Mon, 7 Mar 2022 14:21:56 +0200, Codrin Ciubotariu wrote:
> This patch series adds support for Pulse Density Microphone Controller
> (PDMC), present on Microchip's SAMA7G5.
> The PDMC interfaces up to 4 digital microphones having Pulse Density
> Modulated (PDM) outputs. It generates a single clock line and samples 1 or
> 2 data lines. The signal path includes an audio grade programmable
> decimation filter and outputs 24-bit audio words.
> The source of each channel can be independently defined as PDMC_DS0 or
> PDMC_DS1, sampled at the rising or falling edge of PDMC_CLK.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/6] ASoC: dmaengine: do not use a NULL prepare_slave_config() callback
      commit: 9a1e13440a4f2e7566fd4c5eae6a53e6400e08a4
[2/6] ASoC: dt-bindings: Document Microchip's PDMC
      commit: 015044e9610c8523794ea6cb55d5388bc00ba96a
[3/6] ASoC: atmel: mchp-pdmc: add PDMC driver
      commit: 50291652af5269813baa6024eb0e81b5f0bbb451

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark