From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oder Chiou Subject: [PATCH 2/2] ASoC: rt5514-spi: check irq status to schedule data copy in resume function Date: Wed, 8 Nov 2017 15:04:22 +0800 Message-ID: <1510124662-5065-2-git-send-email-oder_chiou@realtek.com> References: <1510124662-5065-1-git-send-email-oder_chiou@realtek.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from rtits2.realtek.com.tw (rtits2.realtek.com [211.75.126.72]) by alsa0.perex.cz (Postfix) with ESMTP id 0B87526742B for ; Wed, 8 Nov 2017 08:06:19 +0100 (CET) In-Reply-To: <1510124662-5065-1-git-send-email-oder_chiou@realtek.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: broonie@kernel.org, lgirdwood@gmail.com Cc: Oder Chiou , jack.yu@realtek.com, alsa-devel@alsa-project.org, shumingf@realtek.com, bardliao@realtek.com, flove@realtek.com, cychiang@chromium.org List-Id: alsa-devel@alsa-project.org For wake on voice use case, we need to copy data from DSP buffer to PCM stream when system wakes up by voice. However the edge triggered IRQ could be missed when system wakes up, in that case the irq function will not be called. If the substream was constructed beforce suspend, we will schedule data copy in resume function. Signed-off-by: Oder Chiou --- sound/soc/codecs/rt5514-spi.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c index 0c0e209..c722f33 100644 --- a/sound/soc/codecs/rt5514-spi.c +++ b/sound/soc/codecs/rt5514-spi.c @@ -465,11 +465,21 @@ static int rt5514_suspend(struct device *dev) static int rt5514_resume(struct device *dev) { + struct snd_soc_platform *platform = snd_soc_lookup_platform(dev); + struct rt5514_dsp *rt5514_dsp = + snd_soc_platform_get_drvdata(platform); int irq = to_spi_device(dev)->irq; + u8 buf[8]; if (device_may_wakeup(dev)) disable_irq_wake(irq); + if (rt5514_dsp->substream) { + rt5514_spi_burst_read(RT5514_IRQ_CTRL, (u8 *)&buf, sizeof(buf)); + if (buf[0] & RT5514_IRQ_STATUS_BIT) + rt5514_schedule_copy(rt5514_dsp); + } + return 0; } -- 2.7.4