From patchwork Tue Jul 21 10:44:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cheng-yi Chiang X-Patchwork-Id: 11675349 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4D478618 for ; Tue, 21 Jul 2020 10:44:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3063B20792 for ; Tue, 21 Jul 2020 10:44:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="Ki3xZi7c" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728210AbgGUKop (ORCPT ); Tue, 21 Jul 2020 06:44:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47634 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729319AbgGUKon (ORCPT ); Tue, 21 Jul 2020 06:44:43 -0400 Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F0CA9C0619D8 for ; Tue, 21 Jul 2020 03:44:43 -0700 (PDT) Received: by mail-pg1-x544.google.com with SMTP id n5so11760353pgf.7 for ; Tue, 21 Jul 2020 03:44:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=2odOJ5ld037Ng0df9XqmYUK1fIoK1GsBG35/G24WS/o=; b=Ki3xZi7cltDdamWKK6yyYHgCHagJybv12qvc9ZLtA09hcw9JQPQVWucr6JsdLpow+T ZUq1jipbkwMV79dw6G2zeLoz34M9tqRKhpRJ+VAxnePkq4IOV6rIquLTZj/UdlHi3XzE YZS5prl4V8wJmJj3o8jYKm0cNPYhEoGV6hkOw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=2odOJ5ld037Ng0df9XqmYUK1fIoK1GsBG35/G24WS/o=; b=OqJSpXMd8aWCAnKkue4V0S9tclG+svr/BsSel5iKxU5qrCgTdtBakYDt8pc935j5nS Lr2SAUb/sMB4vurOhsQ5srFx7jjnOPlTmDdxA859kCOd0gNqUDdqYuzUbu5lHFwtFatg rYptJKssClpHbzBEL2va92aoj8JkP1J0oWYLRMYA7Mo9fCzSTHIxGt7+31LZRr+NHdBR MbcCkWZr6W7hWpIW9svXECHMzmMZJTfRFrGPOwDECRIJ+wLKOtPRO94YAs5Cz1RHQZBL PHhSPZnRHrxxszRhcfYuCfjlAH6urGtdRQ8MNpgCYZxDs0fHESbkkA6jNdoWm0r6S13B S1Bg== X-Gm-Message-State: AOAM530jl/A+6MGKdp8QgvNgfvItRCXqN8IRsk4rbA30hMRXIxBbRQ9K d0hBPwH9MKahXWqp8sFolhpG2Q== X-Google-Smtp-Source: ABdhPJzGVK040lYlN453Qd3xUhg6ZkL4HAMLKyhTwFwuECikRWPUZBomPLIYQ3rT3xo4dUQiLV4nug== X-Received: by 2002:a63:be47:: with SMTP id g7mr21960494pgo.7.1595328283477; Tue, 21 Jul 2020 03:44:43 -0700 (PDT) Received: from localhost ([2401:fa00:1:10:de4a:3eff:fe7d:d39c]) by smtp.gmail.com with ESMTPSA id cv7sm2666110pjb.9.2020.07.21.03.44.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 21 Jul 2020 03:44:42 -0700 (PDT) From: Cheng-Yi Chiang To: linux-kernel@vger.kernel.org Cc: Mark Brown , Taniya Das , Rohit kumar , Banajit Goswami , Patrick Lai , Andy Gross , Bjorn Andersson , Liam Girdwood , Rob Herring , Jaroslav Kysela , Takashi Iwai , dianders@chromium.org, dgreid@chromium.org, tzungbi@chromium.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, alsa-devel@alsa-project.org, Cheng-Yi Chiang Subject: [PATCH v2 1/2] ASoC: qcom: dt-bindings: Add sc7180 machine bindings Date: Tue, 21 Jul 2020 18:44:21 +0800 Message-Id: <20200721104422.369368-2-cychiang@chromium.org> X-Mailer: git-send-email 2.28.0.rc0.105.gf9edc3c819-goog In-Reply-To: <20200721104422.369368-1-cychiang@chromium.org> References: <20200721104422.369368-1-cychiang@chromium.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add devicetree bindings documentation file for sc7180 sound card. Signed-off-by: Cheng-Yi Chiang --- .../bindings/sound/qcom,sc7180.yaml | 130 ++++++++++++++++++ 1 file changed, 130 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/qcom,sc7180.yaml diff --git a/Documentation/devicetree/bindings/sound/qcom,sc7180.yaml b/Documentation/devicetree/bindings/sound/qcom,sc7180.yaml new file mode 100644 index 000000000000..82f9483276eb --- /dev/null +++ b/Documentation/devicetree/bindings/sound/qcom,sc7180.yaml @@ -0,0 +1,130 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/qcom,sc7180.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Technologies Inc. SC7180 ASoC sound card driver + +maintainers: + - Rohit kumar + - Cheng-Yi Chiang + +description: + This binding describes the SC7180 sound card which uses LPASS for audio. + +definitions: + + dai: + type: object + properties: + sound-dai: + maxItems: 1 + $ref: /schemas/types.yaml#/definitions/phandle-array + description: phandle array of the codec or CPU DAI + + required: + - sound-dai + +properties: + compatible: + contains: + const: qcom,sc7180-sndcard + + audio-routing: + $ref: /schemas/types.yaml#/definitions/non-unique-string-array + description: + A list of the connections between audio components. Each entry is a + pair of strings, the first being the connection's sink, the second + being the connection's source. + + model: + $ref: /schemas/types.yaml#/definitions/string + description: User specified audio sound card name + + aux-dev: + $ref: /schemas/types.yaml#/definitions/phandle + description: phandle of the codec for headset detection + +patternProperties: + "^dai-link(@[0-9]+)?$": + description: + Each subnode represents a dai link. Subnodes of each dai links would be + cpu/codec dais. + + type: object + + properties: + link-name: + description: Indicates dai-link name and PCM stream name. + $ref: /schemas/types.yaml#/definitions/string + maxItems: 1 + + reg: + description: dai link address. + $ref: /schemas/types.yaml#/definitions/uint32 + maxItems: 1 + + playback-only: + description: Specify that the dai link is only for playback. + $ref: /schemas/types.yaml#/definitions/flag + + capture-only: + description: Specify that the dai link is only for capture. + $ref: /schemas/types.yaml#/definitions/flag + + cpu: + $ref: "#/definitions/dai" + + codec: + $ref: "#/definitions/dai" + + required: + - link-name + - reg + - cpu + - codec + + additionalProperties: false + +examples: + + - | + sound { + compatible = "qcom,sc7180-sndcard"; + model = "sc7180-snd-card"; + + audio-routing = + "Headphone Jack", "HPOL", + "Headphone Jack", "HPOR"; + + aux-dev = <&alc5682>; + + #address-cells = <1>; + #size-cells = <0>; + + dai-link@0 { + reg = <0>; + link-name = "MultiMedia0"; + cpu { + sound-dai = <&lpass_cpu 0>; + }; + + codec { + sound-dai = <&alc5682 0>; + }; + }; + + dai-link@1 { + reg = <1>; + link-name = "MultiMedia1"; + playback-only; + cpu { + sound-dai = <&lpass_cpu 1>; + }; + + codec { + sound-dai = <&max98357a>; + }; + }; + }; From patchwork Tue Jul 21 10:44:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cheng-yi Chiang X-Patchwork-Id: 11675357 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CB2F6618 for ; Tue, 21 Jul 2020 10:44:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ADEE020714 for ; Tue, 21 Jul 2020 10:44:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="abLrAPV9" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729369AbgGUKow (ORCPT ); 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Tue, 21 Jul 2020 03:44:50 -0700 (PDT) From: Cheng-Yi Chiang To: linux-kernel@vger.kernel.org Cc: Mark Brown , Taniya Das , Rohit kumar , Banajit Goswami , Patrick Lai , Andy Gross , Bjorn Andersson , Liam Girdwood , Rob Herring , Jaroslav Kysela , Takashi Iwai , dianders@chromium.org, dgreid@chromium.org, tzungbi@chromium.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, alsa-devel@alsa-project.org, Ajit Pandey , Cheng-Yi Chiang Subject: [PATCH v2 2/2] ASoC: qcom: sc7180: Add machine driver for sound card registration Date: Tue, 21 Jul 2020 18:44:22 +0800 Message-Id: <20200721104422.369368-3-cychiang@chromium.org> X-Mailer: git-send-email 2.28.0.rc0.105.gf9edc3c819-goog In-Reply-To: <20200721104422.369368-1-cychiang@chromium.org> References: <20200721104422.369368-1-cychiang@chromium.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Ajit Pandey Add new driver to register sound card on sc7180 trogdor board and do the required configuration for lpass cpu dai and external codecs connected over MI2S interfaces. Signed-off-by: Cheng-Yi Chiang --- sound/soc/qcom/Kconfig | 11 ++ sound/soc/qcom/Makefile | 2 + sound/soc/qcom/sc7180.c | 380 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 393 insertions(+) create mode 100644 sound/soc/qcom/sc7180.c diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig index cfca0f730c61..1b02f521f355 100644 --- a/sound/soc/qcom/Kconfig +++ b/sound/soc/qcom/Kconfig @@ -109,3 +109,14 @@ config SND_SOC_SDM845 To add support for audio on Qualcomm Technologies Inc. SDM845 SoC-based systems. Say Y if you want to use audio device on this SoCs. + +config SND_SOC_SC7180 + tristate "SoC Machine driver for SC7180 boards" + depends on SND_SOC_QCOM + select SND_SOC_LPASS_SC7180 + select SND_SOC_MAX98357A + select SND_SOC_RT5682 + help + To add support for audio on Qualcomm Technologies Inc. + SC7180 SoC-based systems. + Say Y if you want to use audio device on this SoCs. diff --git a/sound/soc/qcom/Makefile b/sound/soc/qcom/Makefile index 41b2c7a23a4d..3f6275d90526 100644 --- a/sound/soc/qcom/Makefile +++ b/sound/soc/qcom/Makefile @@ -15,12 +15,14 @@ snd-soc-storm-objs := storm.o snd-soc-apq8016-sbc-objs := apq8016_sbc.o snd-soc-apq8096-objs := apq8096.o snd-soc-sdm845-objs := sdm845.o +snd-soc-sc7180-objs := sc7180.o snd-soc-qcom-common-objs := common.o obj-$(CONFIG_SND_SOC_STORM) += snd-soc-storm.o obj-$(CONFIG_SND_SOC_APQ8016_SBC) += snd-soc-apq8016-sbc.o obj-$(CONFIG_SND_SOC_MSM8996) += snd-soc-apq8096.o obj-$(CONFIG_SND_SOC_SDM845) += snd-soc-sdm845.o +obj-$(CONFIG_SND_SOC_SC7180) += snd-soc-sc7180.o obj-$(CONFIG_SND_SOC_QCOM_COMMON) += snd-soc-qcom-common.o #DSP lib diff --git a/sound/soc/qcom/sc7180.c b/sound/soc/qcom/sc7180.c new file mode 100644 index 000000000000..3beb2b129d01 --- /dev/null +++ b/sound/soc/qcom/sc7180.c @@ -0,0 +1,380 @@ +// SPDX-License-Identifier: GPL-2.0-only +// +//Copyright (c) 2020, The Linux Foundation. All rights reserved. +// +//sc7180.c -- ALSA SoC Machine driver for SC7180 + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../codecs/rt5682.h" +#include "common.h" +#include "lpass.h" + +#define DEFAULT_SAMPLE_RATE_48K 48000 +#define DEFAULT_MCLK_RATE 19200000 +#define RT5682_PLL1_FREQ (48000 * 512) + +static int sc7180_headset_init(struct snd_soc_component *component); + +static struct snd_soc_aux_dev sc7180_headset_dev = { + .dlc = COMP_EMPTY(), + .init = sc7180_headset_init, +}; + +struct sc7180_snd_data { + struct snd_soc_jack jack; + struct snd_soc_card *card; + u32 pri_mi2s_clk_count; +}; + +static void sc7180_jack_free(struct snd_jack *jack) +{ + struct snd_soc_component *component = jack->private_data; + + snd_soc_component_set_jack(component, NULL, NULL); +} + +static int sc7180_headset_init(struct snd_soc_component *component) +{ + struct snd_soc_card *card = component->card; + struct sc7180_snd_data *pdata = snd_soc_card_get_drvdata(card); + struct snd_jack *jack; + int rval; + + rval = snd_soc_card_jack_new( + card, "Headset Jack", + SND_JACK_HEADSET | + SND_JACK_HEADPHONE | + SND_JACK_BTN_0 | SND_JACK_BTN_1 | + SND_JACK_BTN_2 | SND_JACK_BTN_3, + &pdata->jack, NULL, 0); + + if (rval < 0) { + dev_err(card->dev, "Unable to add Headset Jack\n"); + return rval; + } + + jack = pdata->jack.jack; + + snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE); + snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND); + snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP); + snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN); + + jack->private_data = component; + jack->private_free = sc7180_jack_free; + + rval = snd_soc_component_set_jack(component, + &pdata->jack, NULL); + if (rval != 0 && rval != -EOPNOTSUPP) { + dev_warn(card->dev, "Failed to set jack: %d\n", rval); + return rval; + } + + return 0; +} + + +static unsigned int primary_dai_fmt = SND_SOC_DAIFMT_CBS_CFS | + SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_I2S; + +static int sc7180_snd_startup(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_card *card = rtd->card; + struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card); + struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); + struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); + int ret; + + switch (cpu_dai->id) { + case MI2S_PRIMARY: + if (++data->pri_mi2s_clk_count == 1) { + snd_soc_dai_set_sysclk(cpu_dai, + LPASS_MCLK0, + DEFAULT_MCLK_RATE, + SNDRV_PCM_STREAM_PLAYBACK); + } + snd_soc_dai_set_fmt(codec_dai, primary_dai_fmt); + + /* Configure PLL1 for codec */ + ret = snd_soc_dai_set_pll(codec_dai, 0, RT5682_PLL1_S_MCLK, + DEFAULT_MCLK_RATE, RT5682_PLL1_FREQ); + if (ret < 0) { + dev_err(rtd->dev, "can't set codec pll: %d\n", ret); + return ret; + } + + /* Configure sysclk for codec */ + ret = snd_soc_dai_set_sysclk(codec_dai, RT5682_SCLK_S_PLL1, + RT5682_PLL1_FREQ, + SND_SOC_CLOCK_IN); + if (ret < 0) + dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n", + ret); + + break; + case MI2S_SECONDARY: + break; + default: + dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__, + cpu_dai->id); + return -EINVAL; + } + return 0; +} + +static void sc7180_snd_shutdown(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_card *card = rtd->card; + struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card); + struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); + + switch (cpu_dai->id) { + case MI2S_PRIMARY: + if (--data->pri_mi2s_clk_count == 0) { + snd_soc_dai_set_sysclk(cpu_dai, + LPASS_MCLK0, + 0, + SNDRV_PCM_STREAM_PLAYBACK); + } + break; + case MI2S_SECONDARY: + break; + default: + dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__, + cpu_dai->id); + break; + } +} + +static const struct snd_soc_ops sc7180_ops = { + .startup = sc7180_snd_startup, + .shutdown = sc7180_snd_shutdown, +}; + +static const struct snd_soc_dapm_widget sc7180_snd_widgets[] = { + SND_SOC_DAPM_HP("Headphone Jack", NULL), + SND_SOC_DAPM_MIC("Headset Mic", NULL), +}; + +static struct snd_soc_card sc7180_card = { + .owner = THIS_MODULE, + .aux_dev = &sc7180_headset_dev, + .num_aux_devs = 1, + .dapm_widgets = sc7180_snd_widgets, + .num_dapm_widgets = ARRAY_SIZE(sc7180_snd_widgets), +}; + +static int sc7180_parse_of(struct snd_soc_card *card) +{ + struct device_node *np; + struct device_node *codec = NULL; + struct device_node *platform = NULL; + struct device_node *cpu = NULL; + struct device *dev = card->dev; + struct snd_soc_dai_link *link; + struct of_phandle_args args; + struct snd_soc_dai_link_component *dlc; + int ret, num_links; + + ret = snd_soc_of_parse_card_name(card, "model"); + if (ret) { + dev_err(dev, "Error parsing card name: %d\n", ret); + return ret; + } + + /* DAPM routes */ + if (of_property_read_bool(dev->of_node, "audio-routing")) { + ret = snd_soc_of_parse_audio_routing(card, + "audio-routing"); + if (ret) + return ret; + } + + /* headset aux dev. */ + sc7180_headset_dev.dlc.of_node = of_parse_phandle( + dev->of_node, "aux-dev", 0); + if (!sc7180_headset_dev.dlc.of_node) { + dev_err(dev, + "Property 'aux-dev' missing/invalid\n"); + return -EINVAL; + } + + /* Populate links */ + num_links = of_get_child_count(dev->of_node); + + /* Allocate the DAI link array */ + card->dai_link = devm_kcalloc(dev, num_links, sizeof(*link), + GFP_KERNEL); + if (!card->dai_link) + return -ENOMEM; + + card->num_links = num_links; + link = card->dai_link; + + for_each_child_of_node(dev->of_node, np) { + dlc = devm_kzalloc(dev, 2 * sizeof(*dlc), GFP_KERNEL); + if (!dlc) + return -ENOMEM; + + link->cpus = &dlc[0]; + link->platforms = &dlc[1]; + + link->num_cpus = 1; + link->num_platforms = 1; + + ret = of_property_read_string(np, "link-name", &link->name); + if (ret) { + dev_err(card->dev, + "error getting codec dai_link name\n"); + goto err; + } + + link->playback_only = of_property_read_bool(np, + "playback_only"); + link->capture_only = of_property_read_bool(np, + "capture_only"); + + if (link->playback_only && link->capture_only) { + dev_err(card->dev, + "getting both playback and capture only\n"); + goto err; + } + + cpu = of_get_child_by_name(np, "cpu"); + codec = of_get_child_by_name(np, "codec"); + + if (!cpu) { + dev_err(dev, "%s: Can't find cpu DT node\n", + link->name); + ret = -EINVAL; + goto err; + } + + ret = of_parse_phandle_with_args(cpu, "sound-dai", + "#sound-dai-cells", 0, &args); + if (ret) { + dev_err(card->dev, "%s: error getting cpu phandle\n", + link->name); + goto err; + } + link->cpus->of_node = args.np; + link->id = args.args[0]; + + ret = snd_soc_of_get_dai_name(cpu, &link->cpus->dai_name); + if (ret) { + dev_err(card->dev, "%s: error getting cpu dai name\n", + link->name); + goto err; + } + + if (codec) { + ret = snd_soc_of_get_dai_link_codecs(dev, codec, link); + if (ret < 0) { + dev_err(card->dev, "%s: codec dai not found\n", + link->name); + goto err; + } + } else { + dlc = devm_kzalloc(dev, sizeof(*dlc), GFP_KERNEL); + if (!dlc) + return -ENOMEM; + + link->codecs = dlc; + link->num_codecs = 1; + + link->codecs->dai_name = "snd-soc-dummy-dai"; + link->codecs->name = "snd-soc-dummy"; + } + + link->platforms->of_node = link->cpus->of_node; + link->stream_name = link->name; + link->ops = &sc7180_ops; + link++; + + of_node_put(cpu); + of_node_put(codec); + } + + return 0; +err: + of_node_put(np); + of_node_put(cpu); + of_node_put(codec); + of_node_put(platform); + return ret; +} + +static int sc7180_snd_platform_probe(struct platform_device *pdev) +{ + struct snd_soc_card *card; + struct sc7180_snd_data *data; + struct device *dev = &pdev->dev; + int ret; + + card = &sc7180_card; + + /* Allocate the private data */ + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + card->dapm_widgets = sc7180_snd_widgets; + card->num_dapm_widgets = ARRAY_SIZE(sc7180_snd_widgets); + card->dev = dev; + dev_set_drvdata(dev, card); + ret = sc7180_parse_of(card); + if (ret) { + dev_err(dev, "Error parsing OF data\n"); + return ret; + } + + data->card = card; + snd_soc_card_set_drvdata(card, data); + + ret = snd_soc_register_card(card); + if (ret) { + dev_err(dev, "Sound card registration failed\n"); + return ret; + } + return ret; +} + +static int sc7180_snd_platform_remove(struct platform_device *pdev) +{ + struct snd_soc_card *card = dev_get_drvdata(&pdev->dev); + + snd_soc_unregister_card(card); + return 0; +} + +static const struct of_device_id sc7180_snd_device_id[] = { + { .compatible = "qcom,sc7180-sndcard" }, + {}, +}; +MODULE_DEVICE_TABLE(of, sc7180_snd_device_id); + +static struct platform_driver sc7180_snd_driver = { + .probe = sc7180_snd_platform_probe, + .remove = sc7180_snd_platform_remove, + .driver = { + .name = "msm-snd-sc7180", + .of_match_table = sc7180_snd_device_id, + }, +}; +module_platform_driver(sc7180_snd_driver); + +MODULE_DESCRIPTION("sc7180 ASoC Machine Driver"); +MODULE_LICENSE("GPL v2");