From patchwork Wed Jun 14 07:48:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13279672 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2D10FC001B0 for ; Wed, 14 Jun 2023 07:49:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243227AbjFNHtf (ORCPT ); Wed, 14 Jun 2023 03:49:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57134 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243066AbjFNHte (ORCPT ); Wed, 14 Jun 2023 03:49:34 -0400 Received: from relay5-d.mail.gandi.net (relay5-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::225]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E5D46170E; Wed, 14 Jun 2023 00:49:31 -0700 (PDT) X-GND-Sasl: herve.codina@bootlin.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1686728970; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=5N9NSA3ycLJUSucfBk1k0lUH03RfOeo/UXNYngARjpo=; b=bp/L3mDYJD0nORz8aM+ayzwsonaK5n4v4rtNVz9nKMSKsLrSSkUipHXdZ1mY43QoU+uFdm 3fnhRBylAXt0Nvz+D++gKyQNwk+J8kQ2nrQM6umRSysGq5Zi7pPE5gEP3nzglXWOAJgGy3 x3YDU+CkxIUjiWvMZ9yHisfbc9cMOkOi2AX6q0W5okEJvtsSS2/5SZywuec0PUezO4pbXX QTyGlH0y43NW/fK0ssYDUEUGiCUvyTNBvWfpM3+Z6BxNpFzXH0PYiVzQ+yciIEcdoHtxCF gvslU6pr8uWxnraOlODA5IEYNr7Qg7OYqSMZd2LqCGKwDPR1LsdE28bkV6F1gA== X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com X-GND-Sasl: herve.codina@bootlin.com Received: by mail.gandi.net (Postfix) with ESMTPA id E09851C0019; Wed, 14 Jun 2023 07:49:28 +0000 (UTC) From: Herve Codina To: Herve Codina , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Cameron , Lars-Peter Clausen , Jaroslav Kysela , Takashi Iwai , Kuninori Morimoto , Andy Shevchenko Cc: alsa-devel@alsa-project.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, Christophe Leroy , Thomas Petazzoni Subject: [PATCH v4 02/13] ASoC: dt-bindings: simple-card: Add additional-devs subnode Date: Wed, 14 Jun 2023 09:48:53 +0200 Message-Id: <20230614074904.29085-3-herve.codina@bootlin.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230614074904.29085-1-herve.codina@bootlin.com> References: <20230614074904.29085-1-herve.codina@bootlin.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org The additional-devs subnode allows to declared some virtual devices as sound card children. These virtual devices can then be used by the sound card and so be present in the audio path. The first virtual device supported is the audio IIO auxiliary device in order to support an IIO device as an audio auxiliary device. Signed-off-by: Herve Codina --- .../bindings/sound/simple-card.yaml | 53 +++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/simple-card.yaml b/Documentation/devicetree/bindings/sound/simple-card.yaml index b05e05c81cc4..59ac2d1d1ccf 100644 --- a/Documentation/devicetree/bindings/sound/simple-card.yaml +++ b/Documentation/devicetree/bindings/sound/simple-card.yaml @@ -148,6 +148,15 @@ definitions: required: - sound-dai + additional-devs: + type: object + description: + Additional devices used by the simple audio card. + patternProperties: + '^iio-aux(-.+)?$': + type: object + $ref: audio-iio-aux.yaml# + properties: compatible: contains: @@ -187,6 +196,8 @@ properties: $ref: "#/definitions/mclk-fs" simple-audio-card,aux-devs: $ref: "#/definitions/aux-devs" + simple-audio-card,additional-devs: + $ref: "#/definitions/additional-devs" simple-audio-card,convert-rate: $ref: "#/definitions/convert-rate" simple-audio-card,convert-channels: @@ -359,6 +370,48 @@ examples: }; }; +# -------------------- +# route audio to/from a codec through an amplifier +# designed with a potentiometer driven by IIO: +# -------------------- + - | + sound { + compatible = "simple-audio-card"; + + simple-audio-card,aux-devs = <&_in>, <&_out>; + simple-audio-card,routing = + "CODEC LEFTIN", "AMP_IN LEFT OUT", + "CODEC RIGHTIN", "AMP_IN RIGHT OUT", + "AMP_OUT LEFT IN", "CODEC LEFTOUT", + "AMP_OUT RIGHT IN", "CODEC RIGHTOUT"; + + simple-audio-card,additional-devs { + amp_out: iio-aux-out { + compatible = "audio-iio-aux"; + io-channels = <&pot_out 0>, <&pot_out 1>; + io-channel-names = "LEFT", "RIGHT"; + snd-control-invert-range = <1 1>; + sound-name-prefix = "AMP_OUT"; + }; + + amp_in: iio_aux-in { + compatible = "audio-iio-aux"; + io-channels = <&pot_in 0>, <&pot_in 1>; + io-channel-names = "LEFT", "RIGHT"; + sound-name-prefix = "AMP_IN"; + }; + }; + + simple-audio-card,cpu { + sound-dai = <&cpu>; + }; + + simple-audio-card,codec { + sound-dai = <&codec>; + clocks = <&clocks>; + }; + }; + # -------------------- # Sampling Rate Conversion # --------------------