From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiaxin Yu Subject: [PATCH v2 4/4] ASoC: mt8183: fix audio playback slowly after playback during bootup Date: Fri, 27 Sep 2019 18:31:57 +0800 Message-ID: <1569580317-21181-5-git-send-email-jiaxin.yu@mediatek.com> References: <1569580317-21181-1-git-send-email-jiaxin.yu@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1569580317-21181-1-git-send-email-jiaxin.yu@mediatek.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: broonie@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org, linux@roeck-us.net, wim@linux-watchdog.org Cc: alsa-devel@alsa-project.org, yong.liang@mediatek.com, lgirdwood@gmail.com, jiaxin.yu@mediatek.com, perex@perex.cz, tzungbi@google.com, linux-mediatek@lists.infradead.org, eason.yen@mediatek.com, linux-arm-kernel@lists.infradead.org List-Id: linux-mediatek@lists.infradead.org Before regmap_reinit_cache we must reset audio regs as default values. So we use reset controller unit(toprgu) to reset audio hw. Signed-off-by: Jiaxin Yu --- sound/soc/mediatek/mt8183/mt8183-afe-pcm.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/sound/soc/mediatek/mt8183/mt8183-afe-pcm.c b/sound/soc/mediatek/mt8183/mt8183-afe-pcm.c index 4a31106d3471..721632386a50 100644 --- a/sound/soc/mediatek/mt8183/mt8183-afe-pcm.c +++ b/sound/soc/mediatek/mt8183/mt8183-afe-pcm.c @@ -11,6 +11,7 @@ #include #include #include +#include #include "mt8183-afe-common.h" #include "mt8183-afe-clk.h" @@ -1089,6 +1090,7 @@ static int mt8183_afe_pcm_dev_probe(struct platform_device *pdev) struct mtk_base_afe *afe; struct mt8183_afe_private *afe_priv; struct device *dev; + struct reset_control *rstc; int i, irq_id, ret; afe = devm_kzalloc(&pdev->dev, sizeof(*afe), GFP_KERNEL); @@ -1126,6 +1128,19 @@ static int mt8183_afe_pcm_dev_probe(struct platform_device *pdev) return ret; } + rstc = devm_reset_control_get(dev, "audiosys"); + if (IS_ERR(rstc)) { + ret = PTR_ERR(rstc); + dev_err(dev, "could not get audiosys reset:%d\n", ret); + return ret; + } + + ret = reset_control_reset(rstc); + if (ret) { + dev_err(dev, "failed to trigger audio reset:%d\n", ret); + return ret; + } + /* enable clock for regcache get default value from hw */ afe_priv->pm_runtime_bypass_reg_ctl = true; pm_runtime_get_sync(&pdev->dev); -- 2.18.0