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Date: Mon, 30 Apr 2018 12:54:20 +0530
From: "Mukunda,Vijendar" <vijendar.mukunda@....com>
To: Daniel Kurtz <djkurtz@...omium.org>
Cc: Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>, perex@...ex.cz,
tiwai@...e.com, alexander.deucher@....com, jclinton@...omium.org,
Akshu Agrawal <akshu.agrawal@....com>,
Guenter Roeck <linux@...ck-us.net>,
kstewart@...uxfoundation.org,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/11] ASoC: amd: added byte count register offset
variables to rtd
On Monday 30 April 2018 03:09 AM, Daniel Kurtz wrote:
> Hi Vijendar,
>
>
> On Thu, Apr 26, 2018 at 5:14 AM Vijendar Mukunda <Vijendar.Mukunda@....com>
> wrote:
>
>> Added byte count register offset variables to audio_substream_data
>> structure. Modified dma pointer callback.
>
>> Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
>
> Please fix the small indentation nits, otherwise this one is:
>
> Reviewed-by: Daniel Kurtz <djkurtz@...omium.org>
>
>> ---
>> sound/soc/amd/acp-pcm-dma.c | 36 +++++++++++++++---------------------
>> sound/soc/amd/acp.h | 2 ++
>> 2 files changed, 17 insertions(+), 21 deletions(-)
>
>> diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
>> index f18ed9a..019f696 100644
>> --- a/sound/soc/amd/acp-pcm-dma.c
>> +++ b/sound/soc/amd/acp-pcm-dma.c
>> @@ -793,12 +793,18 @@ static int acp_dma_hw_params(struct
> snd_pcm_substream *substream,
>> rtd->destination = TO_ACP_I2S_1;
>> rtd->dma_dscr_idx_1 = PLAYBACK_START_DMA_DESCR_CH12;
>> rtd->dma_dscr_idx_2 = PLAYBACK_START_DMA_DESCR_CH13;
>> + rtd->byte_cnt_high_reg_offset =
>> + mmACP_I2S_TRANSMIT_BYTE_CNT_HIGH;
>
> Indent relative to line above with 2 tabs.
we will fix it and will post fresh patch.
>
>> + rtd->byte_cnt_low_reg_offset =
> mmACP_I2S_TRANSMIT_BYTE_CNT_LOW;
>> } else {
>> rtd->ch1 = SYSRAM_TO_ACP_CH_NUM;
>> rtd->ch2 = ACP_TO_I2S_DMA_CH_NUM;
>> rtd->destination = FROM_ACP_I2S_1;
>> rtd->dma_dscr_idx_1 = CAPTURE_START_DMA_DESCR_CH14;
>> rtd->dma_dscr_idx_2 = CAPTURE_START_DMA_DESCR_CH15;
>> + rtd->byte_cnt_high_reg_offset =
>> + mmACP_I2S_RECEIVED_BYTE_CNT_HIGH;
>
> here too.
we will fix it and will post fresh patch.
>
>> + rtd->byte_cnt_low_reg_offset =
> mmACP_I2S_RECEIVED_BYTE_CNT_LOW;
>> }
>
>> size = params_buffer_bytes(params);
>> @@ -834,26 +840,15 @@ 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)
>> +static u64 acp_get_byte_count(struct audio_substream_data *rtd)
>> {
>> - union acp_dma_count playback_dma_count;
>> - union acp_dma_count capture_dma_count;
>> - u64 bytescount = 0;
>> + union acp_dma_count byte_count;
>
>> - 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;
>> + byte_count.bcount.high = acp_reg_read(rtd->acp_mmio,
>> +
> rtd->byte_cnt_high_reg_offset);
>> + byte_count.bcount.low = acp_reg_read(rtd->acp_mmio,
>> +
> rtd->byte_cnt_low_reg_offset);
>> + return byte_count.bytescount;
>> }
>
>> static snd_pcm_uframes_t acp_dma_pointer(struct snd_pcm_substream
> *substream)
>> @@ -869,7 +864,7 @@ static snd_pcm_uframes_t acp_dma_pointer(struct
> snd_pcm_substream *substream)
>> return -EINVAL;
>
>> buffersize = frames_to_bytes(runtime, runtime->buffer_size);
>> - bytescount = acp_get_byte_count(rtd->acp_mmio, substream->stream);
>> + bytescount = acp_get_byte_count(rtd);
>
>> if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
>> if (bytescount > rtd->i2ssp_renderbytescount)
>> @@ -925,8 +920,7 @@ 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);
>> + bytescount = acp_get_byte_count(rtd);
>> if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
>> if (rtd->i2ssp_renderbytescount == 0)
>> rtd->i2ssp_renderbytescount = bytescount;
>> diff --git a/sound/soc/amd/acp.h b/sound/soc/amd/acp.h
>> index 5e25428..3b076c6 100644
>> --- a/sound/soc/amd/acp.h
>> +++ b/sound/soc/amd/acp.h
>> @@ -90,6 +90,8 @@ struct audio_substream_data {
>> u16 destination;
>> u16 dma_dscr_idx_1;
>> u16 dma_dscr_idx_2;
>> + u32 byte_cnt_high_reg_offset;
>> + u32 byte_cnt_low_reg_offset;
>> uint64_t size;
>> u64 i2ssp_renderbytescount;
>> u64 i2ssp_capturebytescount;
>> --
>> 2.7.4
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