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Diffstat (limited to 'sound/soc/codecs/nau8825.c')
-rw-r--r--sound/soc/codecs/nau8825.c101
1 files changed, 64 insertions, 37 deletions
diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c
index e853a6dfd33b..a1b697b6fb64 100644
--- a/sound/soc/codecs/nau8825.c
+++ b/sound/soc/codecs/nau8825.c
@@ -194,10 +194,10 @@ static const struct reg_default nau8825_reg_defaults[] = {
/* register backup table when cross talk detection */
static struct reg_default nau8825_xtalk_baktab[] = {
- { NAU8825_REG_ADC_DGAIN_CTRL, 0 },
+ { NAU8825_REG_ADC_DGAIN_CTRL, 0x00cf },
{ NAU8825_REG_HSVOL_CTRL, 0 },
- { NAU8825_REG_DACL_CTRL, 0 },
- { NAU8825_REG_DACR_CTRL, 0 },
+ { NAU8825_REG_DACL_CTRL, 0x00cf },
+ { NAU8825_REG_DACR_CTRL, 0x02cf },
};
static const unsigned short logtable[256] = {
@@ -245,13 +245,14 @@ static const unsigned short logtable[256] = {
* tasks are allowed to acquire the semaphore, calling this function will
* put the task to sleep. If the semaphore is not released within the
* specified number of jiffies, this function returns.
- * Acquires the semaphore without jiffies. If no more tasks are allowed
- * to acquire the semaphore, calling this function will put the task to
- * sleep until the semaphore is released.
* If the semaphore is not released within the specified number of jiffies,
- * this function returns -ETIME.
- * If the sleep is interrupted by a signal, this function will return -EINTR.
- * It returns 0 if the semaphore was acquired successfully.
+ * this function returns -ETIME. If the sleep is interrupted by a signal,
+ * this function will return -EINTR. It returns 0 if the semaphore was
+ * acquired successfully.
+ *
+ * Acquires the semaphore without jiffies. Try to acquire the semaphore
+ * atomically. Returns 0 if the semaphore has been acquired successfully
+ * or 1 if it it cannot be acquired.
*/
static int nau8825_sema_acquire(struct nau8825 *nau8825, long timeout)
{
@@ -262,8 +263,8 @@ static int nau8825_sema_acquire(struct nau8825 *nau8825, long timeout)
if (ret < 0)
dev_warn(nau8825->dev, "Acquire semaphore timeout\n");
} else {
- ret = down_interruptible(&nau8825->xtalk_sem);
- if (ret < 0)
+ ret = down_trylock(&nau8825->xtalk_sem);
+ if (ret)
dev_warn(nau8825->dev, "Acquire semaphore fail\n");
}
@@ -454,22 +455,32 @@ static void nau8825_xtalk_backup(struct nau8825 *nau8825)
{
int i;
+ if (nau8825->xtalk_baktab_initialized)
+ return;
+
/* Backup some register values to backup table */
for (i = 0; i < ARRAY_SIZE(nau8825_xtalk_baktab); i++)
regmap_read(nau8825->regmap, nau8825_xtalk_baktab[i].reg,
&nau8825_xtalk_baktab[i].def);
+
+ nau8825->xtalk_baktab_initialized = true;
}
-static void nau8825_xtalk_restore(struct nau8825 *nau8825)
+static void nau8825_xtalk_restore(struct nau8825 *nau8825, bool cause_cancel)
{
int i, volume;
+ if (!nau8825->xtalk_baktab_initialized)
+ return;
+
/* Restore register values from backup table; When the driver restores
- * the headphone volumem, it needs recover to original level gradually
- * with 3dB per step for less pop noise.
+ * the headphone volume in XTALK_DONE state, it needs recover to
+ * original level gradually with 3dB per step for less pop noise.
+ * Otherwise, the restore should do ASAP.
*/
for (i = 0; i < ARRAY_SIZE(nau8825_xtalk_baktab); i++) {
- if (nau8825_xtalk_baktab[i].reg == NAU8825_REG_HSVOL_CTRL) {
+ if (!cause_cancel && nau8825_xtalk_baktab[i].reg ==
+ NAU8825_REG_HSVOL_CTRL) {
/* Ramping up the volume change to reduce pop noise */
volume = nau8825_xtalk_baktab[i].def &
NAU8825_HPR_VOL_MASK;
@@ -479,6 +490,8 @@ static void nau8825_xtalk_restore(struct nau8825 *nau8825)
regmap_write(nau8825->regmap, nau8825_xtalk_baktab[i].reg,
nau8825_xtalk_baktab[i].def);
}
+
+ nau8825->xtalk_baktab_initialized = false;
}
static void nau8825_xtalk_prepare_dac(struct nau8825 *nau8825)
@@ -644,7 +657,7 @@ static void nau8825_xtalk_clean_adc(struct nau8825 *nau8825)
NAU8825_POWERUP_ADCL | NAU8825_ADC_VREFSEL_MASK, 0);
}
-static void nau8825_xtalk_clean(struct nau8825 *nau8825)
+static void nau8825_xtalk_clean(struct nau8825 *nau8825, bool cause_cancel)
{
/* Enable internal VCO needed for interruptions */
nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0);
@@ -660,7 +673,7 @@ static void nau8825_xtalk_clean(struct nau8825 *nau8825)
NAU8825_I2S_MS_MASK | NAU8825_I2S_LRC_DIV_MASK |
NAU8825_I2S_BLK_DIV_MASK, NAU8825_I2S_MS_SLAVE);
/* Restore value of specific register for cross talk */
- nau8825_xtalk_restore(nau8825);
+ nau8825_xtalk_restore(nau8825, cause_cancel);
}
static void nau8825_xtalk_imm_start(struct nau8825 *nau8825, int vol)
@@ -779,7 +792,7 @@ static void nau8825_xtalk_measure(struct nau8825 *nau8825)
dev_dbg(nau8825->dev, "cross talk sidetone: %x\n", sidetone);
regmap_write(nau8825->regmap, NAU8825_REG_DAC_DGAIN_CTRL,
(sidetone << 8) | sidetone);
- nau8825_xtalk_clean(nau8825);
+ nau8825_xtalk_clean(nau8825, false);
nau8825->xtalk_state = NAU8825_XTALK_DONE;
break;
default:
@@ -815,13 +828,14 @@ static void nau8825_xtalk_work(struct work_struct *work)
static void nau8825_xtalk_cancel(struct nau8825 *nau8825)
{
- /* If the xtalk_protect is true, that means the process is still
- * on going. The driver forces to cancel the cross talk task and
+ /* If the crosstalk is eanbled and the process is on going,
+ * the driver forces to cancel the crosstalk task and
* restores the configuration to original status.
*/
- if (nau8825->xtalk_protect) {
+ if (nau8825->xtalk_enable && nau8825->xtalk_state !=
+ NAU8825_XTALK_DONE) {
cancel_work_sync(&nau8825->xtalk_work);
- nau8825_xtalk_clean(nau8825);
+ nau8825_xtalk_clean(nau8825, true);
}
/* Reset parameters for cross talk suppression function */
nau8825_sema_reset(nau8825);
@@ -1246,8 +1260,10 @@ static int nau8825_hw_params(struct snd_pcm_substream *substream,
regmap_read(nau8825->regmap, NAU8825_REG_DAC_CTRL1, &osr);
osr &= NAU8825_DAC_OVERSAMPLE_MASK;
if (nau8825_clock_check(nau8825, substream->stream,
- params_rate(params), osr))
+ params_rate(params), osr)) {
+ nau8825_sema_release(nau8825);
return -EINVAL;
+ }
regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
NAU8825_CLK_DAC_SRC_MASK,
osr_dac_sel[osr].clk_src << NAU8825_CLK_DAC_SRC_SFT);
@@ -1255,8 +1271,10 @@ static int nau8825_hw_params(struct snd_pcm_substream *substream,
regmap_read(nau8825->regmap, NAU8825_REG_ADC_RATE, &osr);
osr &= NAU8825_ADC_SYNC_DOWN_MASK;
if (nau8825_clock_check(nau8825, substream->stream,
- params_rate(params), osr))
+ params_rate(params), osr)) {
+ nau8825_sema_release(nau8825);
return -EINVAL;
+ }
regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
NAU8825_CLK_ADC_SRC_MASK,
osr_adc_sel[osr].clk_src << NAU8825_CLK_ADC_SRC_SFT);
@@ -1273,8 +1291,10 @@ static int nau8825_hw_params(struct snd_pcm_substream *substream,
bclk_div = 1;
else if (bclk_fs <= 128)
bclk_div = 0;
- else
+ else {
+ nau8825_sema_release(nau8825);
return -EINVAL;
+ }
regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2,
NAU8825_I2S_LRC_DIV_MASK | NAU8825_I2S_BLK_DIV_MASK,
((bclk_div + 1) << NAU8825_I2S_LRC_DIV_SFT) | bclk_div);
@@ -1294,6 +1314,7 @@ static int nau8825_hw_params(struct snd_pcm_substream *substream,
val_len |= NAU8825_I2S_DL_32;
break;
default:
+ nau8825_sema_release(nau8825);
return -EINVAL;
}
@@ -1312,8 +1333,6 @@ static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
unsigned int ctrl1_val = 0, ctrl2_val = 0;
- nau8825_sema_acquire(nau8825, 3 * HZ);
-
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
ctrl2_val |= NAU8825_I2S_MS_MASTER;
@@ -1355,6 +1374,8 @@ static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
return -EINVAL;
}
+ nau8825_sema_acquire(nau8825, 3 * HZ);
+
regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1,
NAU8825_I2S_DL_MASK | NAU8825_I2S_DF_MASK |
NAU8825_I2S_BP_MASK | NAU8825_I2S_PCMB_MASK,
@@ -1687,7 +1708,7 @@ static irqreturn_t nau8825_interrupt(int irq, void *data)
} else if (active_irq & NAU8825_HEADSET_COMPLETION_IRQ) {
if (nau8825_is_jack_inserted(regmap)) {
event |= nau8825_jack_insert(nau8825);
- if (!nau8825->xtalk_bypass && !nau8825->high_imped) {
+ if (nau8825->xtalk_enable && !nau8825->high_imped) {
/* Apply the cross talk suppression in the
* headset without high impedance.
*/
@@ -1701,12 +1722,15 @@ static irqreturn_t nau8825_interrupt(int irq, void *data)
int ret;
nau8825->xtalk_protect = true;
ret = nau8825_sema_acquire(nau8825, 0);
- if (ret < 0)
+ if (ret)
nau8825->xtalk_protect = false;
}
/* Startup cross talk detection process */
- nau8825->xtalk_state = NAU8825_XTALK_PREPARE;
- schedule_work(&nau8825->xtalk_work);
+ if (nau8825->xtalk_protect) {
+ nau8825->xtalk_state =
+ NAU8825_XTALK_PREPARE;
+ schedule_work(&nau8825->xtalk_work);
+ }
} else {
/* The cross talk suppression shouldn't apply
* in the headset with high impedance. Thus,
@@ -1733,7 +1757,9 @@ static irqreturn_t nau8825_interrupt(int irq, void *data)
nau8825->xtalk_event_mask = event_mask;
}
} else if (active_irq & NAU8825_IMPEDANCE_MEAS_IRQ) {
- schedule_work(&nau8825->xtalk_work);
+ /* crosstalk detection enable and process on going */
+ if (nau8825->xtalk_enable && nau8825->xtalk_protect)
+ schedule_work(&nau8825->xtalk_work);
clear_irq = NAU8825_IMPEDANCE_MEAS_IRQ;
} else if ((active_irq & NAU8825_JACK_INSERTION_IRQ_MASK) ==
NAU8825_JACK_INSERTION_DETECTED) {
@@ -2382,7 +2408,7 @@ static int __maybe_unused nau8825_resume(struct snd_soc_codec *codec)
regcache_sync(nau8825->regmap);
nau8825->xtalk_protect = true;
ret = nau8825_sema_acquire(nau8825, 0);
- if (ret < 0)
+ if (ret)
nau8825->xtalk_protect = false;
enable_irq(nau8825->irq);
@@ -2441,8 +2467,8 @@ static void nau8825_print_device_properties(struct nau8825 *nau8825)
nau8825->jack_insert_debounce);
dev_dbg(dev, "jack-eject-debounce: %d\n",
nau8825->jack_eject_debounce);
- dev_dbg(dev, "crosstalk-bypass: %d\n",
- nau8825->xtalk_bypass);
+ dev_dbg(dev, "crosstalk-enable: %d\n",
+ nau8825->xtalk_enable);
}
static int nau8825_read_device_properties(struct device *dev,
@@ -2507,8 +2533,8 @@ static int nau8825_read_device_properties(struct device *dev,
&nau8825->jack_eject_debounce);
if (ret)
nau8825->jack_eject_debounce = 0;
- nau8825->xtalk_bypass = device_property_read_bool(dev,
- "nuvoton,crosstalk-bypass");
+ nau8825->xtalk_enable = device_property_read_bool(dev,
+ "nuvoton,crosstalk-enable");
nau8825->mclk = devm_clk_get(dev, "mclk");
if (PTR_ERR(nau8825->mclk) == -EPROBE_DEFER) {
@@ -2569,6 +2595,7 @@ static int nau8825_i2c_probe(struct i2c_client *i2c,
*/
nau8825->xtalk_state = NAU8825_XTALK_DONE;
nau8825->xtalk_protect = false;
+ nau8825->xtalk_baktab_initialized = false;
sema_init(&nau8825->xtalk_sem, 1);
INIT_WORK(&nau8825->xtalk_work, nau8825_xtalk_work);
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 10:03:42 +0000