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99 lines
3.0 KiB
Diff
99 lines
3.0 KiB
Diff
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From fc4146698489c4725c9ac86ea3e0484914d5285b Mon Sep 17 00:00:00 2001
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From: Viorel Suman <viorel.suman@nxp.com>
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Date: Wed, 27 Jun 2018 10:31:02 +0300
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Subject: [PATCH] MLK-18682-1: ASoC: fsl: sai: use set_bclk_ratio to calculate
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BCLK freq (part 1)
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ALSA API has a standard way to configure DAI BCLK by calling
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"snd_soc_dai_set_bclk_ratio" function. So use it to set BCLK ratio
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and calculate SAI BCLK frequency.
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Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
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[ Aisheng: split machine imx-pdm changes ]
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Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
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---
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sound/soc/fsl/fsl_sai.c | 21 +++++++++++++--------
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sound/soc/fsl/fsl_sai.h | 3 +--
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2 files changed, 14 insertions(+), 10 deletions(-)
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--- a/sound/soc/fsl/fsl_sai.c
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+++ b/sound/soc/fsl/fsl_sai.c
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@@ -234,6 +234,14 @@ static int fsl_sai_set_dai_sysclk_tr(str
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return 0;
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}
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+static int fsl_sai_set_dai_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
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+{
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+ struct fsl_sai *sai = snd_soc_dai_get_drvdata(dai);
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+
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+ sai->bitclk_ratio = ratio;
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+ return 0;
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+}
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+
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static int fsl_sai_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
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int clk_id, unsigned int freq, int dir)
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{
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@@ -243,11 +251,6 @@ static int fsl_sai_set_dai_sysclk(struct
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if (dir == SND_SOC_CLOCK_IN)
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return 0;
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- if (clk_id == FSL_SAI_CLK_BIT) {
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- sai->bitclk_freq = freq;
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- return 0;
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- }
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-
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if (freq > 0) {
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if (clk_id < 0 || clk_id >= FSL_SAI_MCLK_MAX) {
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dev_err(cpu_dai->dev, "Unknown clock id: %d\n", clk_id);
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@@ -571,6 +574,7 @@ static int fsl_sai_hw_params(struct snd_
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bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
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unsigned int channels = params_channels(params);
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u32 word_width = params_width(params);
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+ u32 rate = params_rate(params);
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u32 val_cr4 = 0, val_cr5 = 0;
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u32 slots = (channels == 1) ? 2 : channels;
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u32 slot_width = word_width;
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@@ -605,12 +609,12 @@ static int fsl_sai_hw_params(struct snd_
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slot_width = sai->slot_width;
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if (!sai->slave_mode[tx]) {
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- if (sai->bitclk_freq)
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+ if (sai->bitclk_ratio)
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ret = fsl_sai_set_bclk(cpu_dai, tx,
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- sai->bitclk_freq);
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+ rate * sai->bitclk_ratio);
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else
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ret = fsl_sai_set_bclk(cpu_dai, tx,
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- slots * slot_width * params_rate(params));
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+ rate * slots * slot_width);
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if (ret)
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return ret;
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@@ -935,6 +939,7 @@ static void fsl_sai_shutdown(struct snd_
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}
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static const struct snd_soc_dai_ops fsl_sai_pcm_dai_ops = {
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+ .set_bclk_ratio = fsl_sai_set_dai_bclk_ratio,
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.set_sysclk = fsl_sai_set_dai_sysclk,
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.set_fmt = fsl_sai_set_dai_fmt,
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.set_tdm_slot = fsl_sai_set_dai_tdm_slot,
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--- a/sound/soc/fsl/fsl_sai.h
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+++ b/sound/soc/fsl/fsl_sai.h
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@@ -203,7 +203,6 @@
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#define FSL_SAI_CLK_MAST3 3
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#define FSL_SAI_MCLK_MAX 4
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-#define FSL_SAI_CLK_BIT 5
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/* SAI data transfer numbers per DMA request */
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#define FSL_SAI_MAXBURST_TX 6
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@@ -258,7 +257,7 @@ struct fsl_sai {
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unsigned int mclk_streams;
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unsigned int slots;
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unsigned int slot_width;
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- unsigned int bitclk_freq;
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+ unsigned int bitclk_ratio;
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struct snd_dmaengine_dai_dma_data dma_params_rx;
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struct snd_dmaengine_dai_dma_data dma_params_tx;
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