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ASoC: rockchip: sai: Set maxburst per FIFO waterlevel

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Set dma maxburst per FIFO waterlevel for better performance
on high bit-rate situation, such as 192k 8ch 32bit situation.

Change-Id: Ida94609185b97c31bbfbb02ed65961c90f3d30f3
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
This commit is contained in:
Sugar Zhang
2022-11-22 14:26:20 +08:00
committed by Tao Huang
parent 9f0c3c0661
commit bfc169fd30
1 changed files with 7 additions and 2 deletions
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9
sound/soc/rockchip/rockchip_sai.c
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@@ -24,6 +24,7 @@
#define FW_RATIO_MAX 8
#define FW_RATIO_MIN 1
#define MAXBURST_PER_FIFO 8
enum fpw_mode {
FPW_ONE_BCLK_WIDTH,
@@ -379,10 +380,14 @@ static int rockchip_sai_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct rk_sai_dev *sai = snd_soc_dai_get_drvdata(dai);
struct snd_dmaengine_dai_dma_data *dma_data;
unsigned int mclk_rate, bclk_rate, div_bclk;
unsigned int ch_per_lane, lanes, slot_width;
unsigned int val, fscr, reg;
dma_data = snd_soc_dai_get_dma_data(dai, substream);
dma_data->maxburst = MAXBURST_PER_FIFO * params_channels(params) / 2;
lanes = rockchip_sai_lanes_auto(params, dai);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
@@ -724,7 +729,7 @@ static int rockchip_sai_init_dai(struct rk_sai_dev *sai, struct resource *res,
sai->playback_dma_data.addr = res->start + SAI_TXDR;
sai->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
sai->playback_dma_data.maxburst = 8;
sai->playback_dma_data.maxburst = MAXBURST_PER_FIFO;
}
if (sai->has_capture) {
@@ -739,7 +744,7 @@ static int rockchip_sai_init_dai(struct rk_sai_dev *sai, struct resource *res,
sai->capture_dma_data.addr = res->start + SAI_RXDR;
sai->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
sai->capture_dma_data.maxburst = 8;
sai->capture_dma_data.maxburst = MAXBURST_PER_FIFO;
}
regmap_update_bits(sai->regmap, SAI_DMACR, SAI_DMACR_TDL_MASK,