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Date: Sun, 29 Apr 2018 21:47:53 +0000
From: Daniel Kurtz <djkurtz@...omium.org>
To: Vijendar.Mukunda@....com
Cc: Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>, perex@...ex.cz,
tiwai@...e.com, alexander.deucher@....com,
Akshu Agrawal <akshu.agrawal@....com>, jclinton@...omium.org,
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 06/11] ASoC: amd: sram bank update changes
On Thu, Apr 26, 2018 at 5:16 AM Vijendar Mukunda <Vijendar.Mukunda@....com>
wrote:
> Added sram bank variable to audio_substream_data structure.
> Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
Move initialization to acp_dma_open(), otherwise this is:
Reviewed-by: Daniel Kurtz <djkurtz@...omium.org>
> ---
> sound/soc/amd/acp-pcm-dma.c | 20 +++++---------------
> sound/soc/amd/acp.h | 20 ++++++++++++++------
> 2 files changed, 19 insertions(+), 21 deletions(-)
> diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
> index cb22653..b7bffc7 100644
> --- a/sound/soc/amd/acp-pcm-dma.c
> +++ b/sound/soc/amd/acp-pcm-dma.c
> @@ -320,29 +320,16 @@ static void config_acp_dma(void __iomem *acp_mmio,
> struct audio_substream_data *rtd,
> u32 asic_type)
> {
> - u32 sram_bank;
> -
> - if (rtd->direction == SNDRV_PCM_STREAM_PLAYBACK)
> - sram_bank = ACP_SHARED_RAM_BANK_1_ADDRESS;
> - else {
> - switch (asic_type) {
> - case CHIP_STONEY:
> - sram_bank = ACP_SHARED_RAM_BANK_3_ADDRESS;
> - break;
> - default:
> - sram_bank = ACP_SHARED_RAM_BANK_5_ADDRESS;
> - }
> - }
> acp_pte_config(acp_mmio, rtd->pg, rtd->num_of_pages,
> rtd->pte_offset);
> /* Configure System memory <-> ACP SRAM DMA descriptors */
> set_acp_sysmem_dma_descriptors(acp_mmio, rtd->size,
> rtd->direction, rtd->pte_offset,
> - rtd->ch1, sram_bank,
> + rtd->ch1, rtd->sram_bank,
> rtd->dma_dscr_idx_1, asic_type);
> /* Configure ACP SRAM <-> I2S DMA descriptors */
> set_acp_to_i2s_dma_descriptors(acp_mmio, rtd->size,
> - rtd->direction, sram_bank,
> + rtd->direction, rtd->sram_bank,
> rtd->destination, rtd->ch2,
> rtd->dma_dscr_idx_2, asic_type);
> }
> @@ -795,6 +782,7 @@ static int acp_dma_hw_params(struct snd_pcm_substream
*substream,
> }
> rtd->ch1 = SYSRAM_TO_ACP_CH_NUM;
> rtd->ch2 = ACP_TO_I2S_DMA_CH_NUM;
> + rtd->sram_bank = ACP_SRAM_BANK_1_ADDRESS;
> 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;
> @@ -805,9 +793,11 @@ static int acp_dma_hw_params(struct
snd_pcm_substream *substream,
> switch (adata->asic_type) {
> case CHIP_STONEY:
> rtd->pte_offset = ACP_ST_CAPTURE_PTE_OFFSET;
> + rtd->sram_bank = ACP_SRAM_BANK_2_ADDRESS;
> break;
> default:
> rtd->pte_offset = ACP_CAPTURE_PTE_OFFSET;
> + rtd->sram_bank = ACP_SRAM_BANK_5_ADDRESS;
> }
> rtd->ch1 = SYSRAM_TO_ACP_CH_NUM;
> rtd->ch2 = ACP_TO_I2S_DMA_CH_NUM;
> diff --git a/sound/soc/amd/acp.h b/sound/soc/amd/acp.h
> index 2f48d1d..62695ed 100644
> --- a/sound/soc/amd/acp.h
> +++ b/sound/soc/amd/acp.h
> @@ -19,12 +19,19 @@
> #define ACP_PHYSICAL_BASE 0x14000
> -/* Playback SRAM address (as a destination in dma descriptor) */
> -#define ACP_SHARED_RAM_BANK_1_ADDRESS 0x4002000
> -
> -/* Capture SRAM address (as a source in dma descriptor) */
> -#define ACP_SHARED_RAM_BANK_5_ADDRESS 0x400A000
> -#define ACP_SHARED_RAM_BANK_3_ADDRESS 0x4006000
> +/*
> + * In case of I2S SP controller instance, Stoney uses SRAM bank 1 for
> + * playback and SRAM Bank 2 for capture where as in case of BT I2S
> + * Instance, Stoney uses SRAM Bank 3 for playback & SRAM Bank 4 will
> + * be used for capture. Carrizo uses I2S SP controller instance. SRAM
Banks
> + * 1, 2, 3, 4 will be used for playback & SRAM Banks 5, 6, 7, 8 will be
used
> + * for capture scenario.
> + */
> +#define ACP_SRAM_BANK_1_ADDRESS 0x4002000
> +#define ACP_SRAM_BANK_2_ADDRESS 0x4004000
> +#define ACP_SRAM_BANK_3_ADDRESS 0x4006000
> +#define ACP_SRAM_BANK_4_ADDRESS 0x4008000
> +#define ACP_SRAM_BANK_5_ADDRESS 0x400A000
> #define ACP_DMA_RESET_TIME 10000
> #define ACP_CLOCK_EN_TIME_OUT_VALUE 0x000000FF
> @@ -95,6 +102,7 @@ struct audio_substream_data {
> u16 dma_dscr_idx_1;
> u16 dma_dscr_idx_2;
> u32 pte_offset;
> + u32 sram_bank;
> u32 byte_cnt_high_reg_offset;
> u32 byte_cnt_low_reg_offset;
> uint64_t size;
> --
> 2.7.4
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