Re: [PATCH] ASoC: codecs: Add support for AK4458 DAC driver
From: Rob Herring <robh@kernel.org>
Date: 2018-02-05 06:14:14
Also in:
alsa-devel, lkml
On Wed, Jan 31, 2018 at 03:20:09PM +0200, Cosmin-Gabriel Samoila wrote:
The AK4458 is a 32-bit 8ch Premium DAC that corresponds to a 768kHz PCM input and an 11.2MHz DSD input at maximum. It supports I2S, DSD and TDM modes with 24 or 32 bit MSB or 16, 24, 32 LSB formats. Its datasheet is available here: https://www.akm.com/akm/en/file/datasheet/AK4458VN.pdf Signed-off-by: Junichi Wakasugi <redacted> Signed-off-by: Mihai Serban <redacted> Signed-off-by: Shengjiu Wang <redacted> Signed-off-by: Cosmin-Gabriel Samoila <redacted> --- Documentation/devicetree/bindings/sound/ak4458.txt | 23 +
Separate patch please.
quoted hunk ↗ jump to hunk
sound/soc/codecs/Kconfig | 18 + sound/soc/codecs/Makefile | 6 + sound/soc/codecs/ak4458-i2c.c | 79 ++ sound/soc/codecs/ak4458-spi.c | 61 ++ sound/soc/codecs/ak4458.c | 1132 ++++++++++++++++++++ sound/soc/codecs/ak4458.h | 127 +++ 7 files changed, 1446 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/ak4458.txt create mode 100644 sound/soc/codecs/ak4458-i2c.c create mode 100644 sound/soc/codecs/ak4458-spi.c create mode 100644 sound/soc/codecs/ak4458.c create mode 100644 sound/soc/codecs/ak4458.hdiff --git a/Documentation/devicetree/bindings/sound/ak4458.txt b/Documentation/devicetree/bindings/sound/ak4458.txt new file mode 100644 index 0000000..b9e6eb3 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/ak4458.txt@@ -0,0 +1,23 @@ +AK4458 audio DAC + +This device supports both I2C and SPI modes. + +Required properties: + +- compatible : "asahi-kasei,ak4458" +- reg : The I2C address of the device for I2C, the chip select number for SPI. +- asahi-kasei,pdn-gpios: A GPIO specifier for the GPIO controlling + the power down & reset pin.
reset-gpios like the Asahi Kasei ADC under review.
+- asahi-kasei,mute-gpios: A GPIO specifier for the GPIO controlling + the soft mute pin.
State the active state.
+
+Example:
+
+&i2c {
+ ak4458: ak4458@10 {dac@10
+ compatible = "asahi-kasei,ak4458"; + reg = <0x10>; + asahi-kasei,pdn-gpios = <&gpio1 10 GPIO_ACTIVE_HIGH> + asahi-kasei,mute-gpios = <&gpio1 11 GPIO_ACTIVE_HIGH> + }; +};