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ASoC: rockchip: i2s-tdm: 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.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Change-Id: Ib8d7596e2f43fa8efec10ce045bb3225e3873070
This commit is contained in:
Sugar Zhang
2022-08-01 18:14:38 +08:00
parent 52397dcf3e
commit e1df6dab68
1 changed files with 7 additions and 3 deletions
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10
sound/soc/rockchip/rockchip_i2s_tdm.c
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@@ -40,7 +40,7 @@
#define MULTIPLEX_CH_MAX 10
#define CLK_PPM_MIN (-1000)
#define CLK_PPM_MAX (1000)
#define MAXBURST_PER_FIFO 8
struct txrx_config {
u32 addr;
u32 reg;
@@ -1108,11 +1108,15 @@ static int rockchip_i2s_tdm_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct rk_i2s_tdm_dev *i2s_tdm = to_info(dai);
struct snd_dmaengine_dai_dma_data *dma_data;
struct clk *mclk;
int ret = 0;
unsigned int val = 0;
unsigned int mclk_rate, bclk_rate, div_bclk = 4, div_lrck = 64;
dma_data = snd_soc_dai_get_dma_data(dai, substream);
dma_data->maxburst = MAXBURST_PER_FIFO * params_channels(params) / 2;
if (i2s_tdm->is_master_mode) {
if (i2s_tdm->mclk_calibrate)
rockchip_i2s_tdm_calibrate_mclk(i2s_tdm, substream,
@@ -1995,11 +1999,11 @@ static int rockchip_i2s_tdm_probe(struct platform_device *pdev)
i2s_tdm->playback_dma_data.addr = res->start + I2S_TXDR;
i2s_tdm->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
i2s_tdm->playback_dma_data.maxburst = 8;
i2s_tdm->playback_dma_data.maxburst = MAXBURST_PER_FIFO;
i2s_tdm->capture_dma_data.addr = res->start + I2S_RXDR;
i2s_tdm->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
i2s_tdm->capture_dma_data.maxburst = 8;
i2s_tdm->capture_dma_data.maxburst = MAXBURST_PER_FIFO;
ret = rockchip_i2s_tdm_tx_path_prepare(i2s_tdm, node);
if (ret < 0) {