On Wed, May 24, 2017 at 12:35:47PM +0200, Julian Scheel wrote:
This adds a driver for the TI PCM9211 digital audio interface transceiver. The driver currently only handles the receiver aspect of the chip. Some extra device-tree fields are introduced to allow configuration of pin functions directly out of this driver.
Signed-off-by: Julian Scheel julian@jusst.de
Changes in v2:
- Fix checkpatch errors (long lines, * association)
- Fix typos in device-tree documentation
- Fix group-function dt. Mask was applied on unshifted data
- Fix error check for int0 gpio lookup
- Fix ADC rate list (92->96kHz)
- Add support for AUXOUT as second DAI
.../devicetree/bindings/sound/pcm9211.txt | 119 ++
Matching the compatible for filename is preferred, so "ti,pcm9211.txt".
MAINTAINERS | 6 + include/dt-bindings/sound/pcm9211.h | 55 + sound/soc/codecs/Kconfig | 10 + sound/soc/codecs/Makefile | 4 + sound/soc/codecs/pcm9211-i2c.c | 65 + sound/soc/codecs/pcm9211.c | 1446 ++++++++++++++++++++ sound/soc/codecs/pcm9211.h | 206 +++ 8 files changed, 1911 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/pcm9211.txt create mode 100644 include/dt-bindings/sound/pcm9211.h create mode 100644 sound/soc/codecs/pcm9211-i2c.c create mode 100644 sound/soc/codecs/pcm9211.c create mode 100644 sound/soc/codecs/pcm9211.h
diff --git a/Documentation/devicetree/bindings/sound/pcm9211.txt b/Documentation/devicetree/bindings/sound/pcm9211.txt new file mode 100644 index 000000000000..df3974368125 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/pcm9211.txt @@ -0,0 +1,119 @@ +PCM9211 audio CODEC
TI PCM9211...
+This device supports both I2C and SPI (configured with pin strapping +on the board). The driver is currently implementing i2c only.
What the driver supports is not relevant to the binding.
+Required properties:
- compatible : "ti,pcm9211"
- reg : the I2C address of the device for I2C, the chip select
number for SPI.
- VCCAD-supply, VCC-supply, VDDRX-supply and AVDD-supply :
- power supplies for the device, as covered in
- bindings/regulator/regulator.txt
+Optional properties:
- clocks : A clock specifier for the clock connected to XTI. While the
- device could work without it, this driver currently relies on it being
- available
- clock-names : Must specify "xti" to match the requested clock.
- reset-gpios : GPIO wired to the reset pin, if not supplied a soft-reset is
- used as fallback
- int0-gpios : GPIO connected to interrupt0 output of the PCM9211. The
- line can be configured to any of MPO0,1 and MPIOA,B,C0-4 and error/int0.
- If this is specified it is used as an interrupt to notify alsa controls
alsa is a Linux detail not relevant to the binding.
- about changes of the incoming sampling rate on DIR (spdif) as well as NPCM
- status.
This should use interrupts property instead.
- ti,group-function: An array with size 3 specifying function for pingroups
- A, B and C. Possible values are defined in dt-bindings/sound/pcm9211.h
- ti,mpio-a-flags-gpio: An array with size 4 specifying flags out or gpio
- mode per pin, when function DIR_FLAGS_GPIO is selected for group a.
- Possible values are defined in dt-bindings/sound/pcm9211.h
- ti,mpio-b-flags-gpio: An array with size 4 specifying flags out or gpio
- mode per pin, when function DIR_FLAGS_GPIO is selected for group b.
- Possible values are defined in dt-bindings/sound/pcm9211.h
- ti,mpio-c-flags-gpio: An array with size 4 specifying flags out or gpio
- mode per pin, when function DIR_FLAGS_GPIO is selected for group c.
- Possible values are defined in dt-bindings/sound/pcm9211.h
- ti,mpio-a-flag: An array with size 4 specifying flag assigned per pin,
- when function DIR_FLAGS_GPIO is selected for group a and pin is set to
- flags mode.
- Possible values are defined in dt-bindings/sound/pcm9211.h
- ti,mpio-b-flag: An array with size 4 specifying flag assigned per pin,
- when function DIR_FLAGS_GPIO is selected for group b and pin is set to
- flags mode.
- Possible values are defined in dt-bindings/sound/pcm9211.h
- ti,mpio-c-flag: An array with size 4 specifying flag assigned per pin,
- when function DIR_FLAGS_GPIO is selected for group c and pin is set to
- flags mode.
- Possible values are defined in dt-bindings/sound/pcm9211.h
- ti,mpo-function: An array with size 2 specifying flag assigned per mpo
- pin.
- Possible values are defined in dt-bindings/sound/pcm9211.h
- ti,int0-function: Selects error/int0 pin function.
- Possible values are defined in dt-bindings/sound/pcm9211.h
- ti,int1-function: Selects error/int1 pin function.
- Possible values are defined in dt-bindings/sound/pcm9211.h
This all looks like your own custom pinmuxing properties. We already have a common binding for that.
+Examples:
- pcm9211: pcm9211@43 {
compatible = "ti,pcm9211";reg = <0x43>;VCCAD-supply = <®_5v0_analog>;VCC-supply = <®_3v3_pll_analog>;VDDRX-supply = <®_3v3>;DVDD-supply = <®_3v3>;clocks = <&xti_clk>;clock-names = "xti";- };
- pcm9211: pcm9211@43 {
audio-codec@...
compatible = "ti,pcm9211";reg = <0x43>;VCCAD-supply = <®_5v0_analog>;VCC-supply = <®_3v3_pll_analog>;VDDRX-supply = <®_3v3>;DVDD-supply = <®_3v3>;clocks = <&xti_clk>;clock-names = "xti";reset-gpios = <&gpio1 0 GPIO_ACTIVE_HIGH>;int-gpios = <&gpio1 0 GPIO_ACTIVE_HIGH>;ti,group-function = /bits/ 8<PCM9211_MPIO_A_GROUP_BIPHASE_INPUT,PCM9211_MPIO_B_GROUP_DIR_FLAGS_GPIO,PCM9211_MPIO_C_GROUP_AUXIN1>;ti,mpio-b-flags-gpio = /bits/ 8<PCM9211_MPIO_DIR_FLAGS,PCM9211_MPIO_DIR_FLAGS,PCM9211_MPIO_DIR_FLAGS,PCM9211_MPIO_DIR_FLAGS>;ti,mpio-b-flag = /bits/ 8<PCM9211_MPIO_FLAG_INT0,PCM9211_MPIO_FLAG_CLKST,PCM9211_MPIO_FLAG_CLKST,PCM9211_MPIO_FLAG_CLKST>;- };