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Message-ID: <20250321222432.8212-1-nikola.jelic83@gmail.com>
Date: Fri, 21 Mar 2025 23:22:47 +0100
From: Nikola Jelic <nikola.jelic83@...il.com>
To: lgirdwood@...il.com,
broonie@...nel.org,
perex@...ex.cz,
tiwai@...e.com,
robh@...nel.org,
krzk+dt@...nel.org,
conor+dt@...nel.org,
linux-sound@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: rwalton@...micro.com
Subject: [PATCH V6 1/2] ASoC: dt-bindings: Add cmx655 codec
The driver is for cmx655d audio codecs from CML Micro. The CMX655D is an
ultra-low power voice codec targeted at digital voice and sensor
applications.
Signed-off-by: Nikola Jelic <nikola.jelic83@...il.com>
---
2025-01-25 Nikola Jelic <nikola.jelic83@...il.com> V1
* /Documentation/devicetree/bindings/sound/cml,cmx655d.yaml: added the device tree binding
* /Documentation/devicetree/bindings/sound/cmx655.txt: added the device tree description file
* /Documentation/devicetree/bindings/vendor-prefixes.yaml: added CML Micro, Ltd. to the vendor prefixes
* /sound/soc/codecs/Kconfig: added SND_SOC_CMX655D and its dependencies
* /sound/soc/codecs/Makefile: added snd-soc-cmx655 and its dependencies
* /sound/soc/codecs/cmx655.c: added the main driver file for the codec
* /sound/soc/codecs/cmx655.h: added the main header file for the codec
* /sound/soc/codecs/cmx655_i2c.c: added the i2c adapter for the codec
* /sound/soc/codecs/cmx655_spi.c: added the spi adapter for the codec
2025-02-03 Nikola Jelic <nikola.jelic83@...il.com> V2
* mailin-list: added the missing recipients
* mail-header: fixed the subjects of the emails, to align with the norms for the subsystem
* /Documentation/devicetree/bindings/sound/cmx655.txt: removed the file, obsolete now
* /sound/soc/codecs/Kconfig: changed the dependencies between the configuration options
* /sound/soc/codecs/Makefile: renamed i2c and spi files and fixed the dependencies
* /sound/soc/codecs/cmx655.c:
Removed unnecessary comments.
Fixed the comments to conform to the kerneldoc format.
cmx655_volatile_reg: removed unnecessary bool ret variable.
cmx655_regmap: changed cache type to REGCACHE_MAPLE.
Changes symbol exports to the GPL variant.
Changed usage of master/slave to primary/secondary.
Introduced the constraint mechanism for the baud rates.
cmx655_dai_startup: added the function for registering the constraints.
Renamed several controls and widgets to be more verbose and precise.
cmx655_common_register_component: moved majority of the registration code from i2c and spi into this function.
* /sound/soc/codecs/cmx655.h:
Removed unnecessary comments.
Fixed the comments to conform to the kerneldoc format.
Introduced the usage of the BIT() macro.
cmx655_common_register_component: changed the function's signature
* /sound/soc/codecs/cmx655-i2c.c:
Renamed the file
Reduced the initialisation code, moved to cmx655.c
* /sound/soc/codecs/cmx655-spi.c:
Renamed the file
Reduced the initialisation code, moved to cmx655.c
2025-02-07 Nikola Jelic <nikola.jelic83@...il.com> V3
* mail-header: added versioning to the patch series
* mail-body: added a minimalistic changelog for the patch series
* /Documentation/devicetree/bindings/sound/cml,cmx655d.yaml:
Removed '|' from the description field.
Added descriptions to all used properties.
Removed pinctrl-* properties.
Fixed description for the cmx655,classd-oc-reset-attempts property.
Added minimum and maximum for the cmx655,classd-oc-reset-attempts property.
Fixed the example of usage.
* /sound/soc/codecs/cmx655-i2c.c:
Added a holder variable for the regmap.
Removed gpio toggling during removal.
* /sound/soc/codecs/cmx655-spi.c:
Added a holder variable for the regmap.
Removed gpio toggling during removal.
* /sound/soc/codecs/cmx655.c:
cmx655_start_sys_clk: added newlines after for-loops.
cmx655_get_sys_clk_config: removed brackets around case values.
cmx655_setup_rate: error causes an immediate return, no silent drops anymore.
Removed the constraints functions and structures.
cmx655_component_remove: added a newline after variable initialisation.
cmx655_companding: removed "enum" from the name.
cmx655_alc_gain: removed "Gain" from the name.
cmx655_mic_dapm_event: removed brackets around case values.
CMX655_DAPM_MIC: new macro used for the microphone definitions.
cmx655_parse_data_from_of: fixed the name of the custom property.
cmx655_common_unregister_component: added gpio toggling.
* /sound/soc/codecs/cmx655.c:
CMX655_DAPM_MIC: new macro introduced.
2025-02-10 Nikola Jelic <nikola.jelic83@...il.com> V4
* mail-header: capital 'V' for the patch series version
* /sound/soc/codecs/cmx655-i2c.c: removed version.h header.
* /sound/soc/codecs/cmx655-spi.c: removed version.h header.
* /sound/soc/codecs/cmx655.c:
Removed version.h heaer.
cmx655_get_sys_clk_config: fixed logical to bitwise 'or'.
cmx655_mic_dapm_event: fixed reg_val checking.
2025-02-14 Nikola Jelic <nikola.jelic83@...il.com> V5
* /Documentation/devicetree/bindings/sound/cml,cmx655d.yaml:
"compatible" changed to const.
Removed unnecessary descriptions of properties.
cml,classd-oc-reset-attempts: removed altogether.
Removed "status" from the example.
Fixed the order of the properties in the example.
* /sound/soc/codecs/cmx655.c:
Moved reset_attempts to the module parameter.
cmx655_irq_thread: uses the module parameter now.
cmx655_parse_data_from_of: removed.
cmx655_common_register_component: doesn't invoke cmx655_parse_data_from_of anymore.
* /sound/soc/codecs/cmx655.h:
CMX655_DAPM_MIC: fixed formatting issues.
cmx655_data: removed oc_cnt_max field.
2025-03-21 Nikola Jelic <nikola.jelic83@...il.com> V6
* branch: rebased to next-20250321 tag
* mail-body:
Much more verbose changelog.
Fixed inconsistency between changelogs in two patches.
Added "in-reply-to".
* MAINTAINERS: added the "CML CODEC DRIVER" entry
* /sound/soc/codecs/Kconfig:
Fixed a typo in the SND_SOC_ALL_CODECS imply section.
Added "help" sections to the added configuration options.
---
.../bindings/sound/cml,cmx655d.yaml | 62 +++++++++++++++++++
.../devicetree/bindings/vendor-prefixes.yaml | 2 +
MAINTAINERS | 7 +++
3 files changed, 71 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/cml,cmx655d.yaml
diff --git a/Documentation/devicetree/bindings/sound/cml,cmx655d.yaml b/Documentation/devicetree/bindings/sound/cml,cmx655d.yaml
new file mode 100644
index 000000000000..577e1d4942c6
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/cml,cmx655d.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/cml,cmx655d.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: CML Micro CMX655D codec
+
+maintainers:
+ - Richard Walton <rwalton@...micro.com>
+ - Nikola Jelic <nikola.jelic83@...il.com>
+
+description:
+ The CMX655D is an ultra-low power voice codec.
+
+allOf:
+ - $ref: dai-common.yaml#
+
+properties:
+ compatible:
+ const: cml,cmx655d
+
+ reg:
+ maxItems: 1
+
+ "#sound-dai-cells":
+ const: 0
+
+ reset-gpios:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ interrupt-names:
+ const: cmx-irq
+
+required:
+ - compatible
+ - reg
+ - '#sound-dai-cells'
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/gpio/gpio.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ audio-codec@54 {
+ compatible = "cml,cmx655d";
+ reg = <0x54>;
+ #sound-dai-cells = <0>;
+ reset-gpios = <&gpio 24 GPIO_ACTIVE_LOW>;
+ interrupt-parent = <&gpio>;
+ interrupts = <25 IRQ_TYPE_EDGE_RISING>;
+ };
+
+ };
+...
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 86f6a19b28ae..49ea70169b1b 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -310,6 +310,8 @@ patternProperties:
description: Carl Cloos Schweisstechnik GmbH.
"^cloudengines,.*":
description: Cloud Engines, Inc.
+ "^cml,.*":
+ description: CML Micro, Ltd.
"^cnm,.*":
description: Chips&Media, Inc.
"^cnxt,.*":
diff --git a/MAINTAINERS b/MAINTAINERS
index cc6536141bb3..9d4b1bdb4456 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5801,6 +5801,13 @@ C: irc://irc.oftc.net/bcache
F: include/linux/closure.h
F: lib/closure.c
+CML CODEC DRIVER
+M: Nikola Jelic <nikola.jelic83@...il.com>
+M: Richard Walton <rwalton@...micro.com>
+L: linux-sound@...r.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/sound/cml,cmx655d.yaml
+
CMPC ACPI DRIVER
M: Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com>
L: platform-driver-x86@...r.kernel.org
--
2.47.2
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