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Wed, 21 Sep 2022 20:02:42 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 21 Sep 2022 20:02:41 +0800 From: Chunxu Li To: , , , , , CC: , , , , , , , , Chunxu Li Subject: [PATCH] ASoC: SOF: mediatek: add pcm_pointer callback for mt8186 Date: Wed, 21 Sep 2022 20:02:39 +0800 Message-ID: <20220921120239.31934-1-chunxu.li@mediatek.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220921_053257_515834_D58EE704 X-CRM114-Status: GOOD ( 12.66 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org add pcm_pointer callback for mt8186 to support read host position from DSP Signed-off-by: Chunxu Li --- sound/soc/sof/mediatek/mt8186/mt8186.c | 33 ++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/sound/soc/sof/mediatek/mt8186/mt8186.c b/sound/soc/sof/mediatek/mt8186/mt8186.c index 9ec89fc7fec0..181189e00e02 100644 --- a/sound/soc/sof/mediatek/mt8186/mt8186.c +++ b/sound/soc/sof/mediatek/mt8186/mt8186.c @@ -470,6 +470,38 @@ static int mt8186_pcm_hw_params(struct snd_sof_dev *sdev, return 0; } +static snd_pcm_uframes_t mt8186_pcm_pointer(struct snd_sof_dev *sdev, + struct snd_pcm_substream *substream) +{ + int ret; + snd_pcm_uframes_t pos; + struct snd_sof_pcm *spcm; + struct sof_ipc_stream_posn posn; + struct snd_sof_pcm_stream *stream; + struct snd_soc_component *scomp = sdev->component; + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + + spcm = snd_sof_find_spcm_dai(scomp, rtd); + if (!spcm) { + dev_warn_ratelimited(sdev->dev, "warn: can't find PCM with DAI ID %d\n", + rtd->dai_link->id); + return 0; + } + + stream = &spcm->stream[substream->stream]; + ret = snd_sof_ipc_msg_data(sdev, stream->substream, &posn, sizeof(posn)); + if (ret < 0) { + dev_warn(sdev->dev, "failed to read stream position: %d\n", ret); + return 0; + } + + memcpy(&stream->posn, &posn, sizeof(posn)); + pos = spcm->stream[substream->stream].posn.host_posn; + pos = bytes_to_frames(substream->runtime, pos); + + return pos; +} + static struct snd_soc_dai_driver mt8186_dai[] = { { .name = "SOF_DL1", @@ -537,6 +569,7 @@ static struct snd_sof_dsp_ops sof_mt8186_ops = { /* stream callbacks */ .pcm_open = sof_stream_pcm_open, .pcm_hw_params = mt8186_pcm_hw_params, + .pcm_pointer = mt8186_pcm_pointer, .pcm_close = sof_stream_pcm_close, /* firmware loading */