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Fix: try to stop aif clock in thread environment

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This commit is contained in:
turmary 2018-11-07 18:33:55 -10:00
parent 0965139ead
commit 3392bf394b
3 changed files with 72 additions and 32 deletions
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12
ac101.c
View file

@ -644,7 +644,7 @@ static int ac101_sysclk_started(void) {
static int ac101_aif1clk(struct snd_soc_codec* codec, int event, int quick) {
struct ac10x_priv *ac10x = snd_soc_codec_get_drvdata(codec);
int ret;
int ret = 0;
/* spin_lock move to machine trigger */
@ -687,7 +687,7 @@ static int ac101_aif1clk(struct snd_soc_codec* codec, int event, int quick) {
AC101_DBG("event=%d pre_up/%d post_down/%d\n", event, SND_SOC_DAPM_PRE_PMU, SND_SOC_DAPM_POST_PMD);
return 0;
return ret;
}
/**
@ -1240,15 +1240,17 @@ int ac101_audio_startup(struct snd_pcm_substream *substream,
#if _MASTER_MULTI_CODEC == _MASTER_AC101
static int ac101_set_clock(int y_start_n_stop) {
int r;
if (y_start_n_stop) {
/* enable global clock */
ac101_aif1clk(static_ac10x->codec, SND_SOC_DAPM_PRE_PMU, 1);
r = ac101_aif1clk(static_ac10x->codec, SND_SOC_DAPM_PRE_PMU, 1);
} else {
/* disable global clock */
static_ac10x->aif1_clken = 1;
ac101_aif1clk(static_ac10x->codec, SND_SOC_DAPM_POST_PMD, 0);
r = ac101_aif1clk(static_ac10x->codec, SND_SOC_DAPM_POST_PMD, 0);
}
return 0;
return r;
}
#endif

40
ac108.c
View file

@ -453,11 +453,13 @@ static int ac108_multi_write(u8 reg, u8 val, struct ac10x_priv *ac10x) {
}
static int ac108_multi_update_bits(u8 reg, u8 mask, u8 val, struct ac10x_priv *ac10x) {
int r = 0;
u8 i;
for (i = 0; i < ac10x->codec_cnt; i++) {
ac10x_update_bits(reg, mask, val, ac10x->i2cmap[i]);
r |= ac10x_update_bits(reg, mask, val, ac10x->i2cmap[i]);
}
return 0;
return r;
}
static unsigned int ac108_codec_read(struct snd_soc_codec *codec, unsigned int reg) {
@ -986,46 +988,46 @@ static int ac108_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) {
* due to miss channels order in cpu_dai, we meed defer the clock starting.
*/
static int ac108_set_clock(int y_start_n_stop) {
u8 r;
u8 reg;
int ret = 0;
dev_dbg(ac10x->codec->dev, "%s() L%d cmd:%d\n", __func__, __LINE__, y_start_n_stop);
/* spin_lock move to machine trigger */
if (y_start_n_stop) {
if (ac10x->sysclk_en == 0) {
if (y_start_n_stop && ac10x->sysclk_en == 0) {
/* enable lrck clock */
ac10x_read(I2S_CTRL, &r, ac10x->i2cmap[_MASTER_INDEX]);
if (r & (0x01 << BCLK_IOEN)) {
ac10x_update_bits(I2S_CTRL, 0x03 << LRCK_IOEN, 0x03 << LRCK_IOEN, ac10x->i2cmap[_MASTER_INDEX]);
ac10x_read(I2S_CTRL, &reg, ac10x->i2cmap[_MASTER_INDEX]);
if (reg & (0x01 << BCLK_IOEN)) {
ret = ret || ac10x_update_bits(I2S_CTRL, 0x03 << LRCK_IOEN, 0x03 << LRCK_IOEN, ac10x->i2cmap[_MASTER_INDEX]);
}
/*0x10: PLL Common voltage enable, PLL enable */
ac108_multi_update_bits(PLL_CTRL1, 0x01 << PLL_EN | 0x01 << PLL_COM_EN,
ret = ret || ac108_multi_update_bits(PLL_CTRL1, 0x01 << PLL_EN | 0x01 << PLL_COM_EN,
0x01 << PLL_EN | 0x01 << PLL_COM_EN, ac10x);
/* enable global clock */
ac108_multi_update_bits(I2S_CTRL, 0x1 << TXEN | 0x1 << GEN, 0x1 << TXEN | 0x1 << GEN, ac10x);
ret = ret || ac108_multi_update_bits(I2S_CTRL, 0x1 << TXEN | 0x1 << GEN, 0x1 << TXEN | 0x1 << GEN, ac10x);
ac10x->sysclk_en = 1UL;
}
} else if (ac10x->sysclk_en != 0) {
} else if (!y_start_n_stop && ac10x->sysclk_en != 0) {
/* disable global clock */
ac108_multi_update_bits(I2S_CTRL, 0x1 << TXEN | 0x1 << GEN, 0x0 << TXEN | 0x0 << GEN, ac10x);
ret = ret || ac108_multi_update_bits(I2S_CTRL, 0x1 << TXEN | 0x1 << GEN, 0x0 << TXEN | 0x0 << GEN, ac10x);
/*0x10: PLL Common voltage disable, PLL disable */
ac108_multi_update_bits(PLL_CTRL1, 0x01 << PLL_EN | 0x01 << PLL_COM_EN,
ret = ret || ac108_multi_update_bits(PLL_CTRL1, 0x01 << PLL_EN | 0x01 << PLL_COM_EN,
0x00 << PLL_EN | 0x00 << PLL_COM_EN, ac10x);
/* disable lrck clock if it's enabled */
ac10x_read(I2S_CTRL, &r, ac10x->i2cmap[_MASTER_INDEX]);
if (r & (0x01 << LRCK_IOEN)) {
ac10x_update_bits(I2S_CTRL, 0x03 << LRCK_IOEN, 0x01 << BCLK_IOEN, ac10x->i2cmap[_MASTER_INDEX]);
ac10x_read(I2S_CTRL, &reg, ac10x->i2cmap[_MASTER_INDEX]);
if (reg & (0x01 << LRCK_IOEN)) {
ret = ret || ac10x_update_bits(I2S_CTRL, 0x03 << LRCK_IOEN, 0x01 << BCLK_IOEN, ac10x->i2cmap[_MASTER_INDEX]);
}
if (!ret) {
ac10x->sysclk_en = 0UL;
}
}
return 0;
return ret;
}
static int ac108_prepare(struct snd_pcm_substream *substream,

46
seeed-voicecard.c
View file

@ -48,6 +48,9 @@ struct seeed_card_data {
unsigned channels_capture_override;
struct snd_soc_dai_link *dai_link;
spinlock_t lock;
struct work_struct work_codec_clk;
#define TRY_STOP_MAX 3
int try_stop;
};
struct seeed_card_info {
@ -161,6 +164,27 @@ int seeed_voice_card_register_set_clock(int stream, int (*set_clock)(int)) {
}
EXPORT_SYMBOL(seeed_voice_card_register_set_clock);
/*
* work_cb_codec_clk: clear audio codec inner clock.
*/
static void work_cb_codec_clk(struct work_struct *work)
{
struct seeed_card_data *priv = container_of(work, struct seeed_card_data, work_codec_clk);
int r = 0;
if (_set_clock[SNDRV_PCM_STREAM_CAPTURE]) {
r = r || _set_clock[SNDRV_PCM_STREAM_CAPTURE](0);
}
if (_set_clock[SNDRV_PCM_STREAM_PLAYBACK]) {
r = r || _set_clock[SNDRV_PCM_STREAM_PLAYBACK](0);
}
if (r && priv->try_stop++ < TRY_STOP_MAX) {
if (0 != schedule_work(&priv->work_codec_clk)) {}
}
return;
}
static int seeed_voice_card_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
@ -173,15 +197,16 @@ static int seeed_voice_card_trigger(struct snd_pcm_substream *substream, int cmd
__FUNCTION__, snd_pcm_stream_str(substream), cmd,
dai->playback_active, dai->capture_active);
/* I know it will degrades performance, but I have no choice */
spin_lock_irqsave(&priv->lock, flags);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if (cancel_work_sync(&priv->work_codec_clk) != 0) {}
/* I know it will degrades performance, but I have no choice */
spin_lock_irqsave(&priv->lock, flags);
if (_set_clock[SNDRV_PCM_STREAM_CAPTURE]) _set_clock[SNDRV_PCM_STREAM_CAPTURE](1);
if (_set_clock[SNDRV_PCM_STREAM_PLAYBACK]) _set_clock[SNDRV_PCM_STREAM_PLAYBACK](1);
spin_unlock_irqrestore(&priv->lock, flags);
break;
case SNDRV_PCM_TRIGGER_STOP:
@ -191,15 +216,21 @@ static int seeed_voice_card_trigger(struct snd_pcm_substream *substream, int cmd
if (dai->capture_active && substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
break;
}
/* interrupt environment */
if (in_irq() || in_nmi() || in_serving_softirq()) {
priv->try_stop = 0;
if (0 != schedule_work(&priv->work_codec_clk)) {
}
} else {
if (_set_clock[SNDRV_PCM_STREAM_CAPTURE]) _set_clock[SNDRV_PCM_STREAM_CAPTURE](0);
if (_set_clock[SNDRV_PCM_STREAM_PLAYBACK]) _set_clock[SNDRV_PCM_STREAM_PLAYBACK](0);
}
break;
default:
ret = -EINVAL;
}
spin_unlock_irqrestore(&priv->lock, flags);
return ret;
}
@ -558,6 +589,8 @@ static int seeed_voice_card_probe(struct platform_device *pdev)
spin_lock_init(&priv->lock);
INIT_WORK(&priv->work_codec_clk, work_cb_codec_clk);
ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
if (ret >= 0)
return ret;
@ -571,7 +604,10 @@ err:
static int seeed_voice_card_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
struct seeed_card_data *priv = snd_soc_card_get_drvdata(card);
if (cancel_work_sync(&priv->work_codec_clk) != 0) {
}
return asoc_simple_card_clean_reference(card);
}