ASoC: add support for TAS5805M digital amplifier
Subsystems (3)
v2 cover ASoC: add support for TAS5805M digital amplifier
This pair of patches implements support for the TAS5805M class D audio amplifier. This driver, and the example configuration in the device-tree file, were originally based on a 4.19 series kernel and have been modified slightly from the tested version.
This resubmission differs from the first as follows:
- Some explanatory comments and constants have been introduced
- The volume control allows L/R to be set independently
- gpiod is used, and regmap is used directly
- .trigger is used instead of DAPM to coordinate DSP boot
- The component is manually registered after power-on, and explicitly deregistered prior to power-off
- Corrections have been made to the bindings file
Daniel Beer (2):
ASoC: add support for TAS5805M digital amplifier
ASoC: dt-bindings: add bindings for TI TAS5805M.
.../devicetree/bindings/sound/tas5805m.yaml | 204 +++++++ sound/soc/codecs/Kconfig | 9 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/tas5805m.c | 554 ++++++++++++++++++ 4 files changed, 769 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/tas5805m.yaml create mode 100644 sound/soc/codecs/tas5805m.c
Signature · 1 line
2.30.2
PATCH v2 1/2 ASoC: add support for TAS5805M digital amplifier
The Texas Instruments TAS5805M is a class D audio amplifier with an integrated DSP. DSP configuration is expected to be supplied via a device-tree attribute containing a sequence of register writes.
These register writes set up application-specific DSP settings and are expected to be generated using TI's PPC3 tool.
--- sound/soc/codecs/Kconfig | 9 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/tas5805m.c | 554 ++++++++++++++++++++++++++++++++++++ 3 files changed, 565 insertions(+) create mode 100644 sound/soc/codecs/tas5805m.c
sound/soc/codecs/Kconfig +9 -0
@@ -1485,6 +1485,15 @@ config SND_SOC_TAS5720 Enable support for Texas Instruments TAS5720L/M high-efficiency mono Class-D audio power amplifiers. +config SND_SOC_TAS5805M + tristate "Texas Instruments TAS5805M speaker amplifier" + depends on I2C + help + Enable support for Texas Instruments TAS5805M Class-D + amplifiers. This is a speaker amplifier with an integrated + DSP. DSP configuration for each instance needs to be supplied + via a device-tree attribute. + config SND_SOC_TAS6424 tristate "Texas Instruments TAS6424 Quad-Channel Audio amplifier" depends on I2C
sound/soc/codecs/Makefile +2 -0
@@ -236,6 +236,7 @@ snd-soc-sti-sas-objs := sti-sas.o snd-soc-tas5086-objs := tas5086.o snd-soc-tas571x-objs := tas571x.o snd-soc-tas5720-objs := tas5720.o +snd-soc-tas5805m-objs := tas5805m.o snd-soc-tas6424-objs := tas6424.o snd-soc-tda7419-objs := tda7419.o snd-soc-tas2770-objs := tas2770.o
@@ -574,6 +575,7 @@ obj-$(CONFIG_SND_SOC_TAS2764) += snd-soc-tas2764.o obj-$(CONFIG_SND_SOC_TAS5086) += snd-soc-tas5086.o obj-$(CONFIG_SND_SOC_TAS571X) += snd-soc-tas571x.o obj-$(CONFIG_SND_SOC_TAS5720) += snd-soc-tas5720.o +obj-$(CONFIG_SND_SOC_TAS5805M) += snd-soc-tas5805m.o obj-$(CONFIG_SND_SOC_TAS6424) += snd-soc-tas6424.o obj-$(CONFIG_SND_SOC_TDA7419) += snd-soc-tda7419.o obj-$(CONFIG_SND_SOC_TAS2770) += snd-soc-tas2770.o
sound/soc/codecs/tas5805m.c new file +554 -0
554 lines not on this page · raw message
Signature · 1 line
2.30.2
Quoted 9 lines · Daniel Beer
The Texas Instruments TAS5805M is a class D audio amplifier with an integrated DSP. DSP configuration is expected to be supplied via a device-tree attribute containing a sequence of register writes.
These register writes set up application-specific DSP settings and are expected to be generated using TI's PPC3 tool.
Signed-off-by Daniel Beer <[email protected]>---
...
Quoted 15 lines
sound/soc/codecs/tas5805m.c new file +15
-0+ +static int tas5805m_vol_put (struct snd_kcontrol *kcontrol, +struct snd_ctl_elem_value *ucontrol) +{ +struct snd_soc_component *component = +snd_soc_kcontrol_component (kcontrol); +struct tas5805m_priv *tas5805m = +snd_soc_component_get_drvdata (component); + +if (!(volume_is_valid (ucontrol->value.integer.value[0 ]) && +volume_is_valid (ucontrol->value.integer.value[1 ]))) +return -EINVAL ; + +mutex_lock (&tas5805m->lock); + tas5805m->vol[0 ] = ucontrol->value.integer.value[0 ];
sound/soc/codecs/tas5805m.c line 265
Quoted 10 lines
sound/soc/codecs/tas5805m.c new file +10
-0+ tas5805m->vol[1 ] = ucontrol->value.integer.value[1 ]; +dev_dbg (component->dev,"set vol=%d/%d (is_powered=%d)\n" , + tas5805m->vol[0 ], tas5805m->vol[1 ], tas5805m->is_powered); +if (tas5805m->is_powered) +tas5805m_refresh_unlocked (component); +mutex_unlock (&tas5805m->lock); + +return 0 ; +} +
put method should return '1' if value changed, so ALSA knows to inform userspace utilities about change. You can check if userspace is notified of changes with "alsactl monitor", you should see something like:
node hw:2, #3 (2,0,0,ADC0 Capture Volume,0) VALUE
when value changes.
Quoted 22 lines · Amadeusz Sławiński
Quoted 22 lines
sound/soc/codecs/tas5805m.c new file +22
-0+static int tas5805m_vol_put (struct snd_kcontrol *kcontrol, +struct snd_ctl_elem_value *ucontrol) +{ +struct snd_soc_component *component = +snd_soc_kcontrol_component (kcontrol); +struct tas5805m_priv *tas5805m = +snd_soc_component_get_drvdata (component); + +if (!(volume_is_valid (ucontrol->value.integer.value[0 ]) && +volume_is_valid (ucontrol->value.integer.value[1 ]))) +return -EINVAL ; + +mutex_lock (&tas5805m->lock); + tas5805m->vol[0 ] = ucontrol->value.integer.value[0 ]; + tas5805m->vol[1 ] = ucontrol->value.integer.value[1 ]; +dev_dbg (component->dev,"set vol=%d/%d (is_powered=%d)\n" , + tas5805m->vol[0 ], tas5805m->vol[1 ], tas5805m->is_powered); +if (tas5805m->is_powered) +tas5805m_refresh_unlocked (component); +mutex_unlock (&tas5805m->lock); + +return 0 ;
Quoted 8 lines
Review
Quoted 2 lines
(quoted diff) +2
-0+} +put method should return '1' if value changed, so ALSA knows to inform userspace utilities about change. You can check if userspace is notified of changes with "alsactl monitor", you should see something like:
node hw:2, #3 (2,0,0,ADC0 Capture Volume,0) VALUE
when value changes.
Thanks, will fix this.
Signature · 4 lines
Daniel Beer Firmware Engineer at Igor Institute [email protected] or +64-27-420-8101 Offices in Seattle, San Francisco, and Vancouver BC or (206) 494-3312
PATCH v2 2/2 ASoC: dt-bindings: add bindings for TI TAS5805M.
In reply to Daniel BeerThe TAS5805M is a class D speaker amplifier with integrated DSP. The example here includes a tested flat configuration for mono (PBTL) output.
--- .../devicetree/bindings/sound/tas5805m.yaml | 204 ++++++++++++++++++ 1 file changed, 204 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/tas5805m.yaml
Documentation/devicetree/bindings/sound/tas5805m.yaml new file +204 -0
@@ -0,0 +1,204 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/tas5805m.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: TAS5805M audio amplifier + +maintainers: + - Daniel Beer <[email protected]> + +description: | + The TAS5805M is a class D audio amplifier with a built-in DSP. + +properties: + compatible: + enum: + - ti,tas5805m + + reg: + maxItems: 1 + description: | + I2C address of the amplifier. See the datasheet for possible values. + + pvdd-supply: + description: | + Regulator for audio power supply (PVDD in the datasheet). + + pdn-gpios: + description: | + Power-down control GPIO (PDN pin in the datasheet). + + ti,dsp-config: + description: | + A byte sequence giving DSP configuration. Each pair of bytes, in + sequence, gives a register address and a value to write. If you + are taking this data from TI's PPC3 tool, this should contain only + the register writes following the 5ms delay. + $ref: /schemas/types.yaml#/definitions/uint8-array + +examples: + - | + i2c0 { + #address-cells = <1>; + #size-cells = <0>; + tas5805m: tas5805m@2c { + reg = <0x2c>; + compatible = "ti,tas5805m"; + status = "ok"; + + pvdd-supply = <&audiopwr>; + pdn-gpios = <&tlmm 160 0>; + + // Mono PBTL DSP configuration + ti,dsp-config = [ + 00 00 7f 00 03 00 00 00 7f 00 46 01 00 00 7f 00 + 03 02 00 00 7f 00 78 80 00 00 7f 00 61 0b 60 01 + 7d 11 7e ff 00 01 51 05 00 00 02 04 53 00 54 00 + 00 00 00 00 00 00 00 00 00 00 7f 00 66 87 7f 8c + 00 29 18 00 19 40 1a 26 1b e7 1c 00 1d 40 1e 26 + 1f e7 20 00 21 00 22 00 23 00 24 00 25 00 26 00 + 27 00 00 2a 24 00 25 80 26 00 27 00 28 00 29 80 + 2a 00 2b 00 30 00 31 71 32 94 33 9a 00 2c 0c 00 + 0d 00 0e 00 0f 00 10 00 11 00 12 00 13 00 14 00 + 15 80 16 00 17 00 18 00 19 00 1a 00 1b 00 1c 00 + 1d 80 1e 00 1f 00 20 00 21 00 22 00 23 00 28 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Signature · 1 line
2.30.2
Rob Herring
maintainerRe: [PATCH v2 2/2] ASoC: dt-bindings: add bindings for TI TAS5805M.
Quoted 10 lines · Daniel Beer
The TAS5805M is a class D speaker amplifier with integrated DSP. The example here includes a tested flat configuration for mono (PBTL) output.
Signed-off-by Daniel Beer <[email protected]>--- .../devicetree/bindings/sound/tas5805m.yaml | 204 ++++++++++++++++++ 1 file changed, 204 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/tas5805m.yaml
My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check' on your patch (DT_CHECKER_FLAGS is new in v5.13):
yamllint warnings/errors:
dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/sound/tas5805m.example.dt.yaml: tas5805m@2c: status:0: 'ok' is not one of ['okay', 'disabled', 'reserved']
From schema: /usr/local/lib/python3.8/dist-packages/dtschema/schemas/dt-core.yaml
doc reference errors (make refcheckdocs):
See https://patchwork.ozlabs.org/patch/1579511
This check can fail if there are any dependencies. The base for a patch series is generally the most recent rc1.
If you already ran 'make dt_binding_check' and didn't see the above error(s), then make sure 'yamllint' is installed and dt-schema is up to date:
pip3 install dtschema --upgrade
Please check and re-submit.
Re: [PATCH v2 2/2] ASoC: dt-bindings: add bindings for TI TAS5805M.
Quoted 8 lines · Rob Herring
My bot found errors running 'make DT_CHECKER_FLAGS=-m
dt_binding_check' on your patch (DT_CHECKER_FLAGSis new in v5.13):yamllint warnings/errors:
dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/sound/tas5805m.example.dt.yaml: tas5805m@2c: status:0: 'ok' is not one of ['okay', 'disabled', 'reserved']
From schema:/usr/local/lib/python3.8/dist-packages/dtschema/schemas/dt-core.yaml
I ran dt_binding_check against the master branch of the alsa-devel tree and I'm not seeing this error. Obviously it's easy enough to fix, but is there another tree I should be testing against before resubmitting?
Cheers,
Daniel
Signature · 4 lines
Daniel Beer Firmware Engineer at Igor Institute [email protected] or +64-27-420-8101 Offices in Seattle, San Francisco, and Vancouver BC or (206) 494-3312