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no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: lgirdwood@gmail.com, alsa-devel@alsa-project.org, YHCHuang@nuvoton.com, KCHSU0@nuvoton.com, SJLIN0@nuvoton.com, WTLI@nuvoton.com, CTLIN0@nuvoton.com, ctlin0.linux@gmail.com X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Change the original fixed delay to the assignment from property. It will make more flexible to different platforms for avoiding pop noise at the beginning of recording. Signed-off-by: David Lin --- Documentation/devicetree/bindings/sound/nau8825.txt | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/nau8825.txt b/Documentation/devicetree/bindings/sound/nau8825.txt index cb861aca8d40..a9c34526f4cb 100644 --- a/Documentation/devicetree/bindings/sound/nau8825.txt +++ b/Documentation/devicetree/bindings/sound/nau8825.txt @@ -74,6 +74,9 @@ Optional properties: - nuvoton,adcout-drive-strong: make the drive strength of ADCOUT IO PIN strong if set. Otherwise, the drive keeps normal strength. + - nuvoton,adc-delay-ms: Delay (in ms) to make input path stable and avoid pop noise. The + default value is 125 and range between 125 to 500 ms. + - clocks: list of phandle and clock specifier pairs according to common clock bindings for the clocks described in clock-names - clock-names: should include "mclk" for the MCLK master clock From patchwork Fri Apr 14 10:39:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Lin X-Patchwork-Id: 673392 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C0055C77B6E for ; Fri, 14 Apr 2023 10:42:19 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 9B703E7A; 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nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: lgirdwood@gmail.com, alsa-devel@alsa-project.org, YHCHuang@nuvoton.com, KCHSU0@nuvoton.com, SJLIN0@nuvoton.com, WTLI@nuvoton.com, CTLIN0@nuvoton.com, ctlin0.linux@gmail.com X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Change the original fixed delay to the assignment from property. It will make more flexible to different platforms for avoiding pop noise at the beginning of recording. Signed-off-by: David Lin --- sound/soc/codecs/nau8825.c | 8 +++++++- sound/soc/codecs/nau8825.h | 1 + 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c index 4bffa9c20f2b..c4389f5fe603 100644 --- a/sound/soc/codecs/nau8825.c +++ b/sound/soc/codecs/nau8825.c @@ -919,7 +919,7 @@ static int nau8825_adc_event(struct snd_soc_dapm_widget *w, switch (event) { case SND_SOC_DAPM_POST_PMU: - msleep(125); + msleep(nau8825->adc_delay); regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL, NAU8825_ENABLE_ADC, NAU8825_ENABLE_ADC); break; @@ -2752,6 +2752,7 @@ static void nau8825_print_device_properties(struct nau8825 *nau8825) dev_dbg(dev, "crosstalk-enable: %d\n", nau8825->xtalk_enable); dev_dbg(dev, "adcout-drive-strong: %d\n", nau8825->adcout_ds); + dev_dbg(dev, "adc-delay-ms: %d\n", nau8825->adc_delay); } static int nau8825_read_device_properties(struct device *dev, @@ -2819,6 +2820,11 @@ static int nau8825_read_device_properties(struct device *dev, nau8825->xtalk_enable = device_property_read_bool(dev, "nuvoton,crosstalk-enable"); nau8825->adcout_ds = device_property_read_bool(dev, "nuvoton,adcout-drive-strong"); + ret = device_property_read_u32(dev, "nuvoton,adc-delay-ms", &nau8825->adc_delay); + if (ret) + nau8825->adc_delay = 125; + if (nau8825->adc_delay < 125 && nau8825->adc_delay > 500) + dev_warn(dev, "Please set the suitable delay time!\n"); nau8825->mclk = devm_clk_get(dev, "mclk"); if (PTR_ERR(nau8825->mclk) == -EPROBE_DEFER) { diff --git a/sound/soc/codecs/nau8825.h b/sound/soc/codecs/nau8825.h index 0c3a446e0e1a..44b62bc3880f 100644 --- a/sound/soc/codecs/nau8825.h +++ b/sound/soc/codecs/nau8825.h @@ -517,6 +517,7 @@ struct nau8825 { int xtalk_enable; bool xtalk_baktab_initialized; /* True if initialized. */ bool adcout_ds; + int adc_delay; }; int nau8825_enable_jack_detect(struct snd_soc_component *component,