summaryrefslogtreecommitdiff
path: root/sound/soc/codecs/cs42l42.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/codecs/cs42l42.c')
-rw-r--r--sound/soc/codecs/cs42l42.c179
1 files changed, 169 insertions, 10 deletions
diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c
index 43d98bdb5b5b..c8409d50e934 100644
--- a/sound/soc/codecs/cs42l42.c
+++ b/sound/soc/codecs/cs42l42.c
@@ -550,7 +550,7 @@ static int cs42l42_set_jack(struct snd_soc_component *component, struct snd_soc_
struct cs42l42_private *cs42l42 = snd_soc_component_get_drvdata(component);
/* Prevent race with interrupt handler */
- mutex_lock(&cs42l42->jack_detect_mutex);
+ mutex_lock(&cs42l42->irq_lock);
cs42l42->jack = jk;
if (jk) {
@@ -566,7 +566,7 @@ static int cs42l42_set_jack(struct snd_soc_component *component, struct snd_soc_
break;
}
}
- mutex_unlock(&cs42l42->jack_detect_mutex);
+ mutex_unlock(&cs42l42->irq_lock);
return 0;
}
@@ -1012,7 +1012,14 @@ static int cs42l42_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
}
} else {
if (!cs42l42->stream_use) {
- /* SCLK must be running before codec unmute */
+ /* SCLK must be running before codec unmute.
+ *
+ * PLL must not be started with ADC and HP both off
+ * otherwise the FILT+ supply will not charge properly.
+ * DAPM widgets power-up before stream unmute so at least
+ * one of the "DAC" or "ADC" widgets will already have
+ * powered-up.
+ */
if (pll_ratio_table[cs42l42->pll_config].mclk_src_sel) {
snd_soc_component_update_bits(component, CS42L42_PLL_CTL1,
CS42L42_PLL_START_MASK, 1);
@@ -1613,6 +1620,11 @@ static irqreturn_t cs42l42_irq_thread(int irq, void *data)
unsigned int i;
int report = 0;
+ mutex_lock(&cs42l42->irq_lock);
+ if (cs42l42->suspended) {
+ mutex_unlock(&cs42l42->irq_lock);
+ return IRQ_NONE;
+ }
/* Read sticky registers to clear interurpt */
for (i = 0; i < ARRAY_SIZE(stickies); i++) {
@@ -1635,9 +1647,11 @@ static irqreturn_t cs42l42_irq_thread(int irq, void *data)
CS42L42_M_DETECT_FT_MASK |
CS42L42_M_HSBIAS_HIZ_MASK);
- mutex_lock(&cs42l42->jack_detect_mutex);
-
- /* Check auto-detect status */
+ /*
+ * Check auto-detect status. Don't assume a previous unplug event has
+ * cleared the flags. If the jack is unplugged and plugged during
+ * system suspend there won't have been an unplug event.
+ */
if ((~masks[5]) & irq_params_table[5].mask) {
if (stickies[5] & CS42L42_HSDET_AUTO_DONE_MASK) {
cs42l42_process_hs_type_detect(cs42l42);
@@ -1645,11 +1659,15 @@ static irqreturn_t cs42l42_irq_thread(int irq, void *data)
case CS42L42_PLUG_CTIA:
case CS42L42_PLUG_OMTP:
snd_soc_jack_report(cs42l42->jack, SND_JACK_HEADSET,
- SND_JACK_HEADSET);
+ SND_JACK_HEADSET |
+ SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+ SND_JACK_BTN_2 | SND_JACK_BTN_3);
break;
case CS42L42_PLUG_HEADPHONE:
snd_soc_jack_report(cs42l42->jack, SND_JACK_HEADPHONE,
- SND_JACK_HEADPHONE);
+ SND_JACK_HEADSET |
+ SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+ SND_JACK_BTN_2 | SND_JACK_BTN_3);
break;
default:
break;
@@ -1705,7 +1723,7 @@ static irqreturn_t cs42l42_irq_thread(int irq, void *data)
}
}
- mutex_unlock(&cs42l42->jack_detect_mutex);
+ mutex_unlock(&cs42l42->irq_lock);
return IRQ_HANDLED;
}
@@ -1819,6 +1837,10 @@ static void cs42l42_setup_hs_type_detect(struct cs42l42_private *cs42l42)
cs42l42->hs_type = CS42L42_PLUG_INVALID;
+ /*
+ * DETECT_MODE must always be 0 with ADC and HP both off otherwise the
+ * FILT+ supply will not charge properly.
+ */
regmap_update_bits(cs42l42->regmap, CS42L42_MISC_DET_CTL,
CS42L42_DETECT_MODE_MASK, 0);
@@ -2040,6 +2062,138 @@ static int cs42l42_handle_device_data(struct device *dev,
return 0;
}
+/* Datasheet suspend sequence */
+static const struct reg_sequence __maybe_unused cs42l42_shutdown_seq[] = {
+ REG_SEQ0(CS42L42_MIC_DET_CTL1, 0x9F),
+ REG_SEQ0(CS42L42_ADC_OVFL_INT_MASK, 0x01),
+ REG_SEQ0(CS42L42_MIXER_INT_MASK, 0x0F),
+ REG_SEQ0(CS42L42_SRC_INT_MASK, 0x0F),
+ REG_SEQ0(CS42L42_ASP_RX_INT_MASK, 0x1F),
+ REG_SEQ0(CS42L42_ASP_TX_INT_MASK, 0x0F),
+ REG_SEQ0(CS42L42_CODEC_INT_MASK, 0x03),
+ REG_SEQ0(CS42L42_SRCPL_INT_MASK, 0x7F),
+ REG_SEQ0(CS42L42_VPMON_INT_MASK, 0x01),
+ REG_SEQ0(CS42L42_PLL_LOCK_INT_MASK, 0x01),
+ REG_SEQ0(CS42L42_TSRS_PLUG_INT_MASK, 0x0F),
+ REG_SEQ0(CS42L42_WAKE_CTL, 0xE1),
+ REG_SEQ0(CS42L42_DET_INT1_MASK, 0xE0),
+ REG_SEQ0(CS42L42_DET_INT2_MASK, 0xFF),
+ REG_SEQ0(CS42L42_MIXER_CHA_VOL, 0x3F),
+ REG_SEQ0(CS42L42_MIXER_ADC_VOL, 0x3F),
+ REG_SEQ0(CS42L42_MIXER_CHB_VOL, 0x3F),
+ REG_SEQ0(CS42L42_HP_CTL, 0x0F),
+ REG_SEQ0(CS42L42_ASP_RX_DAI0_EN, 0x00),
+ REG_SEQ0(CS42L42_ASP_CLK_CFG, 0x00),
+ REG_SEQ0(CS42L42_HSDET_CTL2, 0x00),
+ REG_SEQ0(CS42L42_PWR_CTL1, 0xFE),
+ REG_SEQ0(CS42L42_PWR_CTL2, 0x8C),
+ REG_SEQ0(CS42L42_DAC_CTL2, 0x02),
+ REG_SEQ0(CS42L42_HS_CLAMP_DISABLE, 0x00),
+ REG_SEQ0(CS42L42_MISC_DET_CTL, 0x03),
+ REG_SEQ0(CS42L42_TIPSENSE_CTL, 0x02),
+ REG_SEQ0(CS42L42_HSBIAS_SC_AUTOCTL, 0x03),
+ REG_SEQ0(CS42L42_PWR_CTL1, 0xFF)
+};
+
+static int __maybe_unused cs42l42_suspend(struct device *dev)
+{
+ struct cs42l42_private *cs42l42 = dev_get_drvdata(dev);
+ unsigned int reg;
+ u8 save_regs[ARRAY_SIZE(cs42l42_shutdown_seq)];
+ int i, ret;
+
+ /*
+ * Wait for threaded irq handler to be idle and stop it processing
+ * future interrupts. This ensures a safe disable if the interrupt
+ * is shared.
+ */
+ mutex_lock(&cs42l42->irq_lock);
+ cs42l42->suspended = true;
+
+ /* Save register values that will be overwritten by shutdown sequence */
+ for (i = 0; i < ARRAY_SIZE(cs42l42_shutdown_seq); ++i) {
+ regmap_read(cs42l42->regmap, cs42l42_shutdown_seq[i].reg, &reg);
+ save_regs[i] = (u8)reg;
+ }
+
+ /* Shutdown codec */
+ regmap_multi_reg_write(cs42l42->regmap,
+ cs42l42_shutdown_seq,
+ ARRAY_SIZE(cs42l42_shutdown_seq));
+
+ /* All interrupt sources are now disabled */
+ mutex_unlock(&cs42l42->irq_lock);
+
+ /* Wait for power-down complete */
+ msleep(CS42L42_PDN_DONE_TIME_MS);
+ ret = regmap_read_poll_timeout(cs42l42->regmap,
+ CS42L42_CODEC_STATUS, reg,
+ (reg & CS42L42_PDN_DONE_MASK),
+ CS42L42_PDN_DONE_POLL_US,
+ CS42L42_PDN_DONE_TIMEOUT_US);
+ if (ret)
+ dev_warn(dev, "Failed to get PDN_DONE: %d\n", ret);
+
+ /* Discharge FILT+ */
+ regmap_update_bits(cs42l42->regmap, CS42L42_PWR_CTL2,
+ CS42L42_DISCHARGE_FILT_MASK, CS42L42_DISCHARGE_FILT_MASK);
+ msleep(CS42L42_FILT_DISCHARGE_TIME_MS);
+
+ regcache_cache_only(cs42l42->regmap, true);
+ gpiod_set_value_cansleep(cs42l42->reset_gpio, 0);
+ regulator_bulk_disable(ARRAY_SIZE(cs42l42->supplies), cs42l42->supplies);
+
+ /* Restore register values to the regmap cache */
+ for (i = 0; i < ARRAY_SIZE(cs42l42_shutdown_seq); ++i)
+ regmap_write(cs42l42->regmap, cs42l42_shutdown_seq[i].reg, save_regs[i]);
+
+ /* The cached address page register value is now stale */
+ regcache_drop_region(cs42l42->regmap, CS42L42_PAGE_REGISTER, CS42L42_PAGE_REGISTER);
+
+ dev_dbg(dev, "System suspended\n");
+
+ return 0;
+
+}
+
+static int __maybe_unused cs42l42_resume(struct device *dev)
+{
+ struct cs42l42_private *cs42l42 = dev_get_drvdata(dev);
+ int ret;
+
+ /*
+ * If jack was unplugged and re-plugged during suspend it could
+ * have changed type but the tip-sense state hasn't changed.
+ * Force a plugged state to be re-evaluated.
+ */
+ if (cs42l42->plug_state != CS42L42_TS_UNPLUG)
+ cs42l42->plug_state = CS42L42_TS_TRANS;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(cs42l42->supplies), cs42l42->supplies);
+ if (ret != 0) {
+ dev_err(dev, "Failed to enable supplies: %d\n", ret);
+ return ret;
+ }
+
+ gpiod_set_value_cansleep(cs42l42->reset_gpio, 1);
+ usleep_range(CS42L42_BOOT_TIME_US, CS42L42_BOOT_TIME_US * 2);
+
+ regcache_cache_only(cs42l42->regmap, false);
+ regcache_mark_dirty(cs42l42->regmap);
+
+ mutex_lock(&cs42l42->irq_lock);
+ /* Sync LATCH_TO_VP first so the VP domain registers sync correctly */
+ regcache_sync_region(cs42l42->regmap, CS42L42_MIC_DET_CTL1, CS42L42_MIC_DET_CTL1);
+ regcache_sync(cs42l42->regmap);
+
+ cs42l42->suspended = false;
+ mutex_unlock(&cs42l42->irq_lock);
+
+ dev_dbg(dev, "System resumed\n");
+
+ return 0;
+}
+
static int cs42l42_i2c_probe(struct i2c_client *i2c_client,
const struct i2c_device_id *id)
{
@@ -2054,7 +2208,7 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client,
cs42l42->dev = &i2c_client->dev;
i2c_set_clientdata(i2c_client, cs42l42);
- mutex_init(&cs42l42->jack_detect_mutex);
+ mutex_init(&cs42l42->irq_lock);
cs42l42->regmap = devm_regmap_init_i2c(i2c_client, &cs42l42_regmap);
if (IS_ERR(cs42l42->regmap)) {
@@ -2210,6 +2364,10 @@ static int cs42l42_i2c_remove(struct i2c_client *i2c_client)
return 0;
}
+static const struct dev_pm_ops cs42l42_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(cs42l42_suspend, cs42l42_resume)
+};
+
#ifdef CONFIG_OF
static const struct of_device_id cs42l42_of_match[] = {
{ .compatible = "cirrus,cs42l42", },
@@ -2236,6 +2394,7 @@ MODULE_DEVICE_TABLE(i2c, cs42l42_id);
static struct i2c_driver cs42l42_i2c_driver = {
.driver = {
.name = "cs42l42",
+ .pm = &cs42l42_pm_ops,
.of_match_table = of_match_ptr(cs42l42_of_match),
.acpi_match_table = ACPI_PTR(cs42l42_acpi_match),
},
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-18 04:44:30 +0000