linux-kernel - Re: [PATCH V2 04/10] ASoC: amd: pte offset related dma driver changes

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Date:   Tue, 15 May 2018 15:22:46 +0530
From:   "Mukunda,Vijendar" <vijendar.mukunda@....com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Alex Deucher <alexander.deucher@....com>,
        Daniel Kurtz <djkurtz@...omium.org>,
        Akshu Agrawal <akshu.agrawal@....com>,
        Guenter Roeck <linux@...ck-us.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." 
        <alsa-devel@...a-project.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2 04/10] ASoC: amd: pte offset related dma driver changes


Hi Mark,

You have merged 1-3 patch series. Still patch no 4 to 10 remaining.
Could you please take them.

Thanks,
Vijendar
On Tuesday 08 May 2018 10:17 AM, Vijendar Mukunda wrote:
> Added pte offset variable in audio_substream_data structure.
> Added Stoney related PTE offset macros in acp header file.
> Modified hw_params callback to assign the pte offset value
> based on asic_type.
> PTE Offset macros used to calculate no of PTE entries
> need to be programmed when memory allocated for audio buffer.
> Depending upon allocated audio buffer size, PTE offset values
> will change.
> Compared to CZ, Stoney has SRAM memory limitation i.e 48k
> It is required to define separate PTE Offset macros for
> Stoney.
> 
> Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
> Reviewed-by: Daniel Kurtz <djkurtz@...omium.org>
> ---
> v1->v2: Modified commit message
>   sound/soc/amd/acp-pcm-dma.c | 26 +++++++++++++++++++-------
>   sound/soc/amd/acp.h         |  5 +++++
>   2 files changed, 24 insertions(+), 7 deletions(-)
> 
> diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
> index 862c1cf..39597fb 100644
> --- a/sound/soc/amd/acp-pcm-dma.c
> +++ b/sound/soc/amd/acp-pcm-dma.c
> @@ -320,13 +320,11 @@ static void config_acp_dma(void __iomem *acp_mmio,
>   			   struct audio_substream_data *rtd,
>   			   u32 asic_type)
>   {
> -	u32 pte_offset, sram_bank;
> +	u32 sram_bank;
>   
> -	if (rtd->direction == SNDRV_PCM_STREAM_PLAYBACK) {
> -		pte_offset = ACP_PLAYBACK_PTE_OFFSET;
> +	if (rtd->direction == SNDRV_PCM_STREAM_PLAYBACK)
>   		sram_bank = ACP_SHARED_RAM_BANK_1_ADDRESS;
> -	} else {
> -		pte_offset = ACP_CAPTURE_PTE_OFFSET;
> +	else {
>   		switch (asic_type) {
>   		case CHIP_STONEY:
>   			sram_bank = ACP_SHARED_RAM_BANK_3_ADDRESS;
> @@ -336,10 +334,10 @@ static void config_acp_dma(void __iomem *acp_mmio,
>   		}
>   	}
>   	acp_pte_config(acp_mmio, rtd->pg, rtd->num_of_pages,
> -		       pte_offset);
> +		       rtd->pte_offset);
>   	/* Configure System memory <-> ACP SRAM DMA descriptors */
>   	set_acp_sysmem_dma_descriptors(acp_mmio, rtd->size,
> -				       rtd->direction, pte_offset,
> +				       rtd->direction, rtd->pte_offset,
>   				       rtd->ch1, sram_bank,
>   				       rtd->dma_dscr_idx_1, asic_type);
>   	/* Configure ACP SRAM <-> I2S DMA descriptors */
> @@ -788,6 +786,13 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
>   	}
>   
>   	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
> +		switch (adata->asic_type) {
> +		case CHIP_STONEY:
> +			rtd->pte_offset = ACP_ST_PLAYBACK_PTE_OFFSET;
> +			break;
> +		default:
> +			rtd->pte_offset = ACP_PLAYBACK_PTE_OFFSET;
> +		}
>   		rtd->ch1 = SYSRAM_TO_ACP_CH_NUM;
>   		rtd->ch2 = ACP_TO_I2S_DMA_CH_NUM;
>   		rtd->destination = TO_ACP_I2S_1;
> @@ -797,6 +802,13 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
>   				mmACP_I2S_TRANSMIT_BYTE_CNT_HIGH;
>   		rtd->byte_cnt_low_reg_offset = mmACP_I2S_TRANSMIT_BYTE_CNT_LOW;
>   	} else {
> +		switch (adata->asic_type) {
> +		case CHIP_STONEY:
> +			rtd->pte_offset = ACP_ST_CAPTURE_PTE_OFFSET;
> +			break;
> +		default:
> +			rtd->pte_offset = ACP_CAPTURE_PTE_OFFSET;
> +		}
>   		rtd->ch1 = ACP_TO_SYSRAM_CH_NUM;
>   		rtd->ch2 = I2S_TO_ACP_DMA_CH_NUM;
>   		rtd->destination = FROM_ACP_I2S_1;
> diff --git a/sound/soc/amd/acp.h b/sound/soc/amd/acp.h
> index 82470bc..2f48d1d 100644
> --- a/sound/soc/amd/acp.h
> +++ b/sound/soc/amd/acp.h
> @@ -10,6 +10,10 @@
>   #define ACP_PLAYBACK_PTE_OFFSET			10
>   #define ACP_CAPTURE_PTE_OFFSET			0
>   
> +/* Playback and Capture Offset for Stoney */
> +#define ACP_ST_PLAYBACK_PTE_OFFSET	0x04
> +#define ACP_ST_CAPTURE_PTE_OFFSET	0x00
> +
>   #define ACP_GARLIC_CNTL_DEFAULT			0x00000FB4
>   #define ACP_ONION_CNTL_DEFAULT			0x00000FB4
>   
> @@ -90,6 +94,7 @@ struct audio_substream_data {
>   	u16 destination;
>   	u16 dma_dscr_idx_1;
>   	u16 dma_dscr_idx_2;
> +	u32 pte_offset;
>   	u32 byte_cnt_high_reg_offset;
>   	u32 byte_cnt_low_reg_offset;
>   	uint64_t size;
>