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ASoC: fsl_sai: Add sample rate constraint

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Platforms like i.MX93/91 only have one audio PLL. Some sample rates are
not supported. If the PLL source is used for 8kHz series rates, then
11kHz series rates can't be supported. Use fsl_asoc_constrain_rates()
to constrain rates according to PLL sources.

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Link: https://patch.msgid.link/20241126115440.3929061-5-chancel.liu@nxp.com
Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Chancel Liu
2024-11-26 20:54:40 +09:00
committed by Mark Brown
parent b622b677d2
commit 4edc98598b
2 changed files with 9 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
sound/soc/fsl/fsl_sai.c
View File

@@ -885,7 +885,7 @@ static int fsl_sai_startup(struct snd_pcm_substream *substream,
sai->dma_params_rx.maxburst);
ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE, &fsl_sai_rate_constraints);
SNDRV_PCM_HW_PARAM_RATE, &sai->constraint_rates);
return ret;
}
@@ -1442,6 +1442,11 @@ static int fsl_sai_probe(struct platform_device *pdev)
fsl_asoc_get_pll_clocks(&pdev->dev, &sai->pll8k_clk,
&sai->pll11k_clk);
fsl_asoc_constrain_rates(&sai->constraint_rates,
&fsl_sai_rate_constraints,
sai->pll8k_clk, sai->pll11k_clk, NULL,
sai->constraint_rates_list);
/* Use Multi FIFO mode depending on the support from SDMA script */
ret = of_property_read_u32_array(np, "dmas", dmas, 4);
if (!sai->soc_data->use_edma && !ret && dmas[2] == IMX_DMATYPE_MULTI_SAI)

3
sound/soc/fsl/fsl_sai.h
View File

@@ -9,6 +9,7 @@
#include <linux/dma/imx-dma.h>
#include <sound/dmaengine_pcm.h>
#define FAL_SAI_NUM_RATES 20
#define FSL_SAI_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE |\
@@ -309,6 +310,8 @@ struct fsl_sai {
struct pinctrl *pinctrl;
struct pinctrl_state *pins_state;
struct sdma_peripheral_config audio_config[2];
struct snd_pcm_hw_constraint_list constraint_rates;
unsigned int constraint_rates_list[FAL_SAI_NUM_RATES];
};
#define TX 1