73 lines
2.5 KiB
Diff
73 lines
2.5 KiB
Diff
From 1b4638a9fa32d8a786e71a2a8813b2e1a3c15830 Mon Sep 17 00:00:00 2001
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From: Shengjiu Wang <shengjiu.wang@freescale.com>
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Date: Tue, 1 Aug 2017 16:10:38 +0800
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Subject: [PATCH] MLK-16130-1: ASoC: fsl_sai: enable TCE/RCE according to input
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channels
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If there is only two channels input and slots is 2, then enable one
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port is enough for data transfer. so enable the TCE/RCE according to
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the input channels and slots configuration.
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Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
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---
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sound/soc/fsl/fsl_sai.c | 13 +++++++++++--
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1 file changed, 11 insertions(+), 2 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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@@ -488,11 +488,14 @@ static int fsl_sai_hw_params(struct snd_
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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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+ u32 pins;
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int ret;
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if (sai->slots)
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slots = sai->slots;
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+ pins = DIV_ROUND_UP(channels, slots);
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+
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if (sai->slot_width)
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slot_width = sai->slot_width;
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@@ -559,6 +562,10 @@ static int fsl_sai_hw_params(struct snd_
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FSL_SAI_CR4_FCOMB_MASK, FSL_SAI_CR4_FCOMB_SOFT);
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}
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+ regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx, offset),
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+ FSL_SAI_CR3_TRCE_MASK,
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+ FSL_SAI_CR3_TRCE((sai->dataline[tx] & ((1 << pins) - 1))));
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+
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regmap_update_bits(sai->regmap, FSL_SAI_xCR4(tx, offset),
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FSL_SAI_CR4_SYWD_MASK | FSL_SAI_CR4_FRSZ_MASK,
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val_cr4);
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@@ -574,8 +581,12 @@ static int fsl_sai_hw_free(struct snd_pc
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struct snd_soc_dai *cpu_dai)
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{
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struct fsl_sai *sai = snd_soc_dai_get_drvdata(cpu_dai);
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+ unsigned char offset = sai->soc->reg_offset;
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bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
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+ regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx, offset),
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+ FSL_SAI_CR3_TRCE_MASK, 0);
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+
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if (!sai->slave_mode[tx] &&
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sai->mclk_streams & BIT(substream->stream)) {
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clk_disable_unprepare(sai->mclk_clk[sai->mclk_id[tx]]);
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@@ -695,7 +706,6 @@ static int fsl_sai_startup(struct snd_pc
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struct snd_soc_dai *cpu_dai)
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{
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struct fsl_sai *sai = snd_soc_dai_get_drvdata(cpu_dai);
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- unsigned char offset = sai->soc->reg_offset;
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bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
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int ret;
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@@ -725,7 +735,6 @@ static void fsl_sai_shutdown(struct snd_
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struct snd_soc_dai *cpu_dai)
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{
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struct fsl_sai *sai = snd_soc_dai_get_drvdata(cpu_dai);
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- unsigned char offset = sai->soc->reg_offset;
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bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
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regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE, 0);
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