From patchwork Wed Nov 8 16:07:58 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 10048737 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5B842603FA for ; Wed, 8 Nov 2017 16:08:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4CED32A5B8 for ; Wed, 8 Nov 2017 16:08:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 417442A5F9; Wed, 8 Nov 2017 16:08:04 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 8DC722A5F5 for ; Wed, 8 Nov 2017 16:08:03 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5E89A6E6C0; Wed, 8 Nov 2017 16:08:02 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from heliosphere.sirena.org.uk (heliosphere.sirena.org.uk [IPv6:2a01:7e01::f03c:91ff:fed4:a3b6]) by gabe.freedesktop.org (Postfix) with ESMTPS id 220E36E6C0; Wed, 8 Nov 2017 16:08:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sirena.org.uk; s=20170815-heliosphere; h=Date:Message-Id:In-Reply-To: Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:References: List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner: List-Archive; bh=sg0y9/JMLvW6VY/4nju6XGji7vU/MxZeKV1NF8CT6/c=; b=JU/Emk81p8sv Tzy59lPCvT7n0/DozySmb6wppOcCP99WuMzA8sI1ASQBI4GjUUeiMNRHEu0qbzTRzG/JqLlE32hTv CxKOBMwN9w586dEgrcXLD7CEE6voJRMfRD2K2J0YLJCSqEpFKnaWFC6bVG8ehwj2hwvCanbGyjyzv PUKao=; Received: from debutante.sirena.org.uk ([2001:470:1f1d:6b5::3] helo=debutante) by heliosphere.sirena.org.uk with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1eCStS-0003Ds-QT; Wed, 08 Nov 2017 16:07:58 +0000 Received: from broonie by debutante with local (Exim 4.89) (envelope-from ) id 1eCStS-0002BV-Cv; Wed, 08 Nov 2017 16:07:58 +0000 From: Mark Brown To: Vijendar Mukunda Subject: Applied "ASoC: amd: Report accurate hw_ptr during dma" to the asoc tree In-Reply-To: <1509741345-1589-2-git-send-email-alexander.deucher@amd.com> Message-Id: Date: Wed, 08 Nov 2017 16:07:58 +0000 Cc: alsa-devel@alsa-project.org, lgirdwood@gmail.com, dri-devel@lists.freedesktop.org, Akshu Agrawal , broonie@kernel.org, amd-gfx@lists.freedesktop.org, Vijendar.Mukunda@amd.com, Alex Deucher X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP The patch ASoC: amd: Report accurate hw_ptr during dma has been applied to the asoc tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark From 61add8147942d23519b91f0edc30980d7c14482c Mon Sep 17 00:00:00 2001 From: Vijendar Mukunda Date: Fri, 3 Nov 2017 16:35:43 -0400 Subject: [PATCH] ASoC: amd: Report accurate hw_ptr during dma Using hw register to read transmitted byte count and report accordingly the hw pointer. TEST= modprobe snd-soc-acp-pcm.ko modprobe snd-soc-acp-rt5645.ko aplay Signed-off-by: Vijendar Mukunda Signed-off-by: Akshu Agrawal Tested-by: Akshu Agrawal Reviewed-by: Jason Clinton Signed-off-by: Alex Deucher Signed-off-by: Mark Brown --- sound/soc/amd/acp-pcm-dma.c | 71 ++++++++++++++++++++++++++++----------------- sound/soc/amd/acp.h | 10 +++++++ 2 files changed, 55 insertions(+), 26 deletions(-) diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c index 73b58ee00383..e19f281afeaa 100644 --- a/sound/soc/amd/acp-pcm-dma.c +++ b/sound/soc/amd/acp-pcm-dma.c @@ -817,39 +817,48 @@ static int acp_dma_hw_free(struct snd_pcm_substream *substream) return snd_pcm_lib_free_pages(substream); } +static u64 acp_get_byte_count(void __iomem *acp_mmio, int stream) +{ + union acp_dma_count playback_dma_count; + union acp_dma_count capture_dma_count; + u64 bytescount = 0; + + if (stream == SNDRV_PCM_STREAM_PLAYBACK) { + playback_dma_count.bcount.high = acp_reg_read(acp_mmio, + mmACP_I2S_TRANSMIT_BYTE_CNT_HIGH); + playback_dma_count.bcount.low = acp_reg_read(acp_mmio, + mmACP_I2S_TRANSMIT_BYTE_CNT_LOW); + bytescount = playback_dma_count.bytescount; + } else { + capture_dma_count.bcount.high = acp_reg_read(acp_mmio, + mmACP_I2S_RECEIVED_BYTE_CNT_HIGH); + capture_dma_count.bcount.low = acp_reg_read(acp_mmio, + mmACP_I2S_RECEIVED_BYTE_CNT_LOW); + bytescount = capture_dma_count.bytescount; + } + return bytescount; +} + static snd_pcm_uframes_t acp_dma_pointer(struct snd_pcm_substream *substream) { - u16 dscr; - u32 mul, dma_config, period_bytes; + u32 buffersize; u32 pos = 0; + u64 bytescount = 0; struct snd_pcm_runtime *runtime = substream->runtime; struct audio_substream_data *rtd = runtime->private_data; - period_bytes = frames_to_bytes(runtime, runtime->period_size); - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - dscr = acp_reg_read(rtd->acp_mmio, mmACP_DMA_CUR_DSCR_13); + buffersize = frames_to_bytes(runtime, runtime->buffer_size); + bytescount = acp_get_byte_count(rtd->acp_mmio, substream->stream); - if (dscr == PLAYBACK_START_DMA_DESCR_CH13) - mul = 0; - else - mul = 1; - pos = (mul * period_bytes); + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + if (bytescount > rtd->renderbytescount) + bytescount = bytescount - rtd->renderbytescount; + pos = bytescount % buffersize; } else { - dma_config = acp_reg_read(rtd->acp_mmio, mmACP_DMA_CNTL_14); - if (dma_config != 0) { - dscr = acp_reg_read(rtd->acp_mmio, - mmACP_DMA_CUR_DSCR_14); - if (dscr == CAPTURE_START_DMA_DESCR_CH14) - mul = 1; - else - mul = 2; - pos = (mul * period_bytes); - } - - if (pos >= (2 * period_bytes)) - pos = 0; - + if (bytescount > rtd->capturebytescount) + bytescount = bytescount - rtd->capturebytescount; + pos = bytescount % buffersize; } return bytes_to_frames(runtime, pos); } @@ -904,6 +913,7 @@ static int acp_dma_trigger(struct snd_pcm_substream *substream, int cmd) { int ret; u32 loops = 1000; + u64 bytescount = 0; struct snd_pcm_runtime *runtime = substream->runtime; struct snd_soc_pcm_runtime *prtd = substream->private_data; @@ -915,7 +925,11 @@ static int acp_dma_trigger(struct snd_pcm_substream *substream, int cmd) case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: case SNDRV_PCM_TRIGGER_RESUME: + bytescount = acp_get_byte_count(rtd->acp_mmio, + substream->stream); if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + if (rtd->renderbytescount == 0) + rtd->renderbytescount = bytescount; acp_dma_start(rtd->acp_mmio, SYSRAM_TO_ACP_CH_NUM, false); while (acp_reg_read(rtd->acp_mmio, mmACP_DMA_CH_STS) & @@ -932,6 +946,8 @@ static int acp_dma_trigger(struct snd_pcm_substream *substream, int cmd) ACP_TO_I2S_DMA_CH_NUM, true); } else { + if (rtd->capturebytescount == 0) + rtd->capturebytescount = bytescount; acp_dma_start(rtd->acp_mmio, I2S_TO_ACP_DMA_CH_NUM, true); } @@ -945,12 +961,15 @@ static int acp_dma_trigger(struct snd_pcm_substream *substream, int cmd) * channels will stopped automatically after its transfer * completes : SYSRAM_TO_ACP_CH_NUM / ACP_TO_SYSRAM_CH_NUM */ - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { ret = acp_dma_stop(rtd->acp_mmio, ACP_TO_I2S_DMA_CH_NUM); - else + rtd->renderbytescount = 0; + } else { ret = acp_dma_stop(rtd->acp_mmio, I2S_TO_ACP_DMA_CH_NUM); + rtd->capturebytescount = 0; + } break; default: ret = -EINVAL; diff --git a/sound/soc/amd/acp.h b/sound/soc/amd/acp.h index a330a99bfff8..de08ff077ac7 100644 --- a/sound/soc/amd/acp.h +++ b/sound/soc/amd/acp.h @@ -83,6 +83,8 @@ struct audio_substream_data { u16 num_of_pages; u16 direction; uint64_t size; + u64 renderbytescount; + u64 capturebytescount; void __iomem *acp_mmio; }; @@ -93,6 +95,14 @@ struct audio_drv_data { u32 asic_type; }; +union acp_dma_count { + struct { + u32 low; + u32 high; + } bcount; + u64 bytescount; +}; + enum { ACP_TILE_P1 = 0, ACP_TILE_P2,