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Fri, 12 Apr 2024 18:35:55 +0800 From: Seven Lee To: CC: , , , , , , , , , , , , , , , , , , , Subject: [PATCH 1/3] ASoC: dt-bindings: nau8821: Add delay control for ADC Date: Fri, 12 Apr 2024 18:35:52 +0800 Message-ID: <20240412103554.3487290-1-wtli@nuvoton.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NotSetDelaration: True X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SG2PEPF000B66CA:EE_|TY0PR03MB6536:EE_ X-MS-Office365-Filtering-Correlation-Id: a69cfc3b-137e-494e-0841-08dc5adc586a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:211.75.126.7;CTRY:TW;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:NTHCCAS01.nuvoton.com;PTR:211-75-126-7.hinet-ip.hinet.net;CAT:NONE;SFS:(13230031)(36860700004)(7416005)(82310400014)(376005)(1800799015);DIR:OUT;SFP:1101; X-OriginatorOrg: nuvoton.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Apr 2024 10:36:00.1322 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a69cfc3b-137e-494e-0841-08dc5adc586a X-MS-Exchange-CrossTenant-Id: a3f24931-d403-4b4a-94f1-7d83ac638e07 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=a3f24931-d403-4b4a-94f1-7d83ac638e07;Ip=[211.75.126.7];Helo=[NTHCCAS01.nuvoton.com] X-MS-Exchange-CrossTenant-AuthSource: SG2PEPF000B66CA.apcprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: TY0PR03MB6536 Change the original fixed delay to the assignment from the property. It will make it more flexible to different platforms to avoid pop noise at the beginning of recording. Signed-off-by: Seven Lee --- .../devicetree/bindings/sound/nuvoton,nau8821.yaml | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml b/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml index 054b53954ac3..a726c5a9b067 100644 --- a/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml +++ b/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml @@ -103,6 +103,13 @@ properties: just limited to the left adc for design demand. type: boolean + nuvoton,adc-delay-ms: + description: Delay (in ms) to make input path stable and avoid pop noise. + The default value is 125 and range between 125 to 500 ms. + minimum: 125 + maximum: 500 + default: 125 + '#sound-dai-cells': const: 0 @@ -136,6 +143,7 @@ examples: nuvoton,jack-eject-debounce = <0>; nuvoton,dmic-clk-threshold = <3072000>; nuvoton,dmic-slew-rate = <0>; + nuvoton,nuvoton,adc-delay-ms = <125>; #sound-dai-cells = <0>; }; }; From patchwork Fri Apr 12 10:35:53 2024 Content-Type: text/plain; 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It will make it more flexible to different platforms to avoid pop noise at the beginning of recording. Signed-off-by: Seven Lee --- sound/soc/codecs/nau8821.c | 11 +++++++++-- sound/soc/codecs/nau8821.h | 1 + 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/nau8821.c b/sound/soc/codecs/nau8821.c index 012e347e6391..fec669e00a10 100644 --- a/sound/soc/codecs/nau8821.c +++ b/sound/soc/codecs/nau8821.c @@ -511,7 +511,7 @@ static int nau8821_left_adc_event(struct snd_soc_dapm_widget *w, switch (event) { case SND_SOC_DAPM_POST_PMU: - msleep(125); + msleep(nau8821->adc_delay); regmap_update_bits(nau8821->regmap, NAU8821_R01_ENA_CTRL, NAU8821_EN_ADCL, NAU8821_EN_ADCL); break; @@ -535,7 +535,7 @@ static int nau8821_right_adc_event(struct snd_soc_dapm_widget *w, switch (event) { case SND_SOC_DAPM_POST_PMU: - msleep(125); + msleep(nau8821->adc_delay); regmap_update_bits(nau8821->regmap, NAU8821_R01_ENA_CTRL, NAU8821_EN_ADCR, NAU8821_EN_ADCR); break; @@ -1697,6 +1697,7 @@ static void nau8821_print_device_properties(struct nau8821 *nau8821) dev_dbg(dev, "dmic-clk-threshold: %d\n", nau8821->dmic_clk_threshold); dev_dbg(dev, "key_enable: %d\n", nau8821->key_enable); + dev_dbg(dev, "adc-delay-ms: %d\n", nau8821->adc_delay); } static int nau8821_read_device_properties(struct device *dev, @@ -1742,6 +1743,12 @@ static int nau8821_read_device_properties(struct device *dev, &nau8821->dmic_slew_rate); if (ret) nau8821->dmic_slew_rate = 0; + ret = device_property_read_u32(dev, "nuvoton,adc-delay-ms", + &nau8821->adc_delay); + if (ret) + nau8821->adc_delay = 125; + if (nau8821->adc_delay < 125 || nau8821->adc_delay > 500) + dev_warn(dev, "Please set the suitable delay time!\n"); return 0; } diff --git a/sound/soc/codecs/nau8821.h b/sound/soc/codecs/nau8821.h index 62eaad130b2e..f0935ffafcbe 100644 --- a/sound/soc/codecs/nau8821.h +++ b/sound/soc/codecs/nau8821.h @@ -577,6 +577,7 @@ struct nau8821 { int dmic_clk_threshold; int dmic_slew_rate; int key_enable; + int adc_delay; }; int nau8821_enable_jack_detect(struct snd_soc_component *component, From patchwork Fri Apr 12 10:35:54 2024 Content-Type: text/plain; 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Signed-off-by: Seven Lee --- sound/soc/codecs/nau8821.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/sound/soc/codecs/nau8821.c b/sound/soc/codecs/nau8821.c index fec669e00a10..6818bbd1d3c7 100644 --- a/sound/soc/codecs/nau8821.c +++ b/sound/soc/codecs/nau8821.c @@ -512,12 +512,8 @@ static int nau8821_left_adc_event(struct snd_soc_dapm_widget *w, switch (event) { case SND_SOC_DAPM_POST_PMU: msleep(nau8821->adc_delay); - regmap_update_bits(nau8821->regmap, NAU8821_R01_ENA_CTRL, - NAU8821_EN_ADCL, NAU8821_EN_ADCL); break; case SND_SOC_DAPM_POST_PMD: - regmap_update_bits(nau8821->regmap, - NAU8821_R01_ENA_CTRL, NAU8821_EN_ADCL, 0); break; default: return -EINVAL; @@ -536,12 +532,8 @@ static int nau8821_right_adc_event(struct snd_soc_dapm_widget *w, switch (event) { case SND_SOC_DAPM_POST_PMU: msleep(nau8821->adc_delay); - regmap_update_bits(nau8821->regmap, NAU8821_R01_ENA_CTRL, - NAU8821_EN_ADCR, NAU8821_EN_ADCR); break; case SND_SOC_DAPM_POST_PMD: - regmap_update_bits(nau8821->regmap, - NAU8821_R01_ENA_CTRL, NAU8821_EN_ADCR, 0); break; default: return -EINVAL;