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Diffstat (limited to 'sound/soc/codecs/wsa883x.c')
-rw-r--r--sound/soc/codecs/wsa883x.c273
1 files changed, 252 insertions, 21 deletions
diff --git a/sound/soc/codecs/wsa883x.c b/sound/soc/codecs/wsa883x.c
index 47da5674d7c9..c3046e260cb9 100644
--- a/sound/soc/codecs/wsa883x.c
+++ b/sound/soc/codecs/wsa883x.c
@@ -6,6 +6,7 @@
#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/gpio/consumer.h>
+#include <linux/hwmon.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
@@ -13,6 +14,7 @@
#include <linux/printk.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
+#include <linux/reset.h>
#include <linux/slab.h>
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_registers.h>
@@ -156,8 +158,28 @@
#define WSA883X_PA_FSM_ERR_COND (WSA883X_DIG_CTRL_BASE + 0x0014)
#define WSA883X_PA_FSM_MSK (WSA883X_DIG_CTRL_BASE + 0x0015)
#define WSA883X_PA_FSM_BYP (WSA883X_DIG_CTRL_BASE + 0x0016)
+#define WSA883X_PA_FSM_BYP_DC_CAL_EN_MASK 0x01
+#define WSA883X_PA_FSM_BYP_DC_CAL_EN_SHIFT 0
+#define WSA883X_PA_FSM_BYP_CLK_WD_EN_MASK 0x02
+#define WSA883X_PA_FSM_BYP_CLK_WD_EN_SHIFT 1
+#define WSA883X_PA_FSM_BYP_BG_EN_MASK 0x04
+#define WSA883X_PA_FSM_BYP_BG_EN_SHIFT 2
+#define WSA883X_PA_FSM_BYP_BOOST_EN_MASK 0x08
+#define WSA883X_PA_FSM_BYP_BOOST_EN_SHIFT 3
+#define WSA883X_PA_FSM_BYP_PA_EN_MASK 0x10
+#define WSA883X_PA_FSM_BYP_PA_EN_SHIFT 4
+#define WSA883X_PA_FSM_BYP_D_UNMUTE_MASK 0x20
+#define WSA883X_PA_FSM_BYP_D_UNMUTE_SHIFT 5
+#define WSA883X_PA_FSM_BYP_SPKR_PROT_EN_MASK 0x40
+#define WSA883X_PA_FSM_BYP_SPKR_PROT_EN_SHIFT 6
+#define WSA883X_PA_FSM_BYP_TSADC_EN_MASK 0x80
+#define WSA883X_PA_FSM_BYP_TSADC_EN_SHIFT 7
#define WSA883X_PA_FSM_DBG (WSA883X_DIG_CTRL_BASE + 0x0017)
#define WSA883X_TADC_VALUE_CTL (WSA883X_DIG_CTRL_BASE + 0x0020)
+#define WSA883X_TADC_VALUE_CTL_TEMP_VALUE_RD_EN_MASK 0x01
+#define WSA883X_TADC_VALUE_CTL_TEMP_VALUE_RD_EN_SHIFT 0
+#define WSA883X_TADC_VALUE_CTL_VBAT_VALUE_RD_EN_MASK 0x02
+#define WSA883X_TADC_VALUE_CTL_VBAT_VALUE_RD_EN_SHIFT 1
#define WSA883X_TEMP_DETECT_CTL (WSA883X_DIG_CTRL_BASE + 0x0021)
#define WSA883X_TEMP_MSB (WSA883X_DIG_CTRL_BASE + 0x0022)
#define WSA883X_TEMP_LSB (WSA883X_DIG_CTRL_BASE + 0x0023)
@@ -427,6 +449,17 @@
SNDRV_PCM_FMTBIT_S24_LE |\
SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
+/* Two-point trimming for temperature calibration */
+#define WSA883X_T1_TEMP -10L
+#define WSA883X_T2_TEMP 150L
+
+/*
+ * Device will report senseless data in many cases, so discard any measurements
+ * outside of valid range.
+ */
+#define WSA883X_LOW_TEMP_THRESHOLD 5
+#define WSA883X_HIGH_TEMP_THRESHOLD 45
+
struct wsa883x_priv {
struct regmap *regmap;
struct device *dev;
@@ -436,11 +469,19 @@ struct wsa883x_priv {
struct sdw_stream_runtime *sruntime;
struct sdw_port_config port_config[WSA883X_MAX_SWR_PORTS];
struct gpio_desc *sd_n;
+ struct reset_control *sd_reset;
bool port_prepared[WSA883X_MAX_SWR_PORTS];
bool port_enable[WSA883X_MAX_SWR_PORTS];
int active_ports;
int dev_mode;
int comp_offset;
+ /*
+ * Protects temperature reading code (related to speaker protection) and
+ * fields: temperature and pa_on.
+ */
+ struct mutex sp_lock;
+ unsigned int temperature;
+ bool pa_on;
};
enum {
@@ -529,11 +570,11 @@ static const struct sdw_port_config wsa883x_pconfig[WSA883X_MAX_SWR_PORTS] = {
},
[WSA883X_PORT_VISENSE] = {
.num = WSA883X_PORT_VISENSE + 1,
- .ch_mask = 0x3,
+ .ch_mask = 0x1,
},
};
-static struct reg_default wsa883x_defaults[] = {
+static const struct reg_default wsa883x_defaults[] = {
{ WSA883X_REF_CTRL, 0xD5 },
{ WSA883X_TEST_CTL_0, 0x06 },
{ WSA883X_BIAS_0, 0xD2 },
@@ -1080,7 +1121,7 @@ static const struct sdw_slave_ops wsa883x_slave_ops = {
static int wsa_dev_mode_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
struct wsa883x_priv *wsa883x = snd_soc_component_get_drvdata(component);
ucontrol->value.enumerated.item[0] = wsa883x->dev_mode;
@@ -1091,7 +1132,7 @@ static int wsa_dev_mode_get(struct snd_kcontrol *kcontrol,
static int wsa_dev_mode_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
struct wsa883x_priv *wsa883x = snd_soc_component_get_drvdata(component);
if (wsa883x->dev_mode == ucontrol->value.enumerated.item[0])
@@ -1111,7 +1152,7 @@ static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(pa_gain,
static int wsa883x_get_swr_port(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
struct wsa883x_priv *data = snd_soc_component_get_drvdata(comp);
struct soc_mixer_control *mixer = (struct soc_mixer_control *)kcontrol->private_value;
int portidx = mixer->reg;
@@ -1124,7 +1165,7 @@ static int wsa883x_get_swr_port(struct snd_kcontrol *kcontrol,
static int wsa883x_set_swr_port(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
struct wsa883x_priv *data = snd_soc_component_get_drvdata(comp);
struct soc_mixer_control *mixer = (struct soc_mixer_control *)kcontrol->private_value;
int portidx = mixer->reg;
@@ -1147,7 +1188,7 @@ static int wsa883x_set_swr_port(struct snd_kcontrol *kcontrol,
static int wsa883x_get_comp_offset(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
struct wsa883x_priv *wsa883x = snd_soc_component_get_drvdata(component);
ucontrol->value.integer.value[0] = wsa883x->comp_offset;
@@ -1158,7 +1199,7 @@ static int wsa883x_get_comp_offset(struct snd_kcontrol *kcontrol,
static int wsa883x_set_comp_offset(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
struct wsa883x_priv *wsa883x = snd_soc_component_get_drvdata(component);
if (wsa883x->comp_offset == ucontrol->value.integer.value[0])
@@ -1186,6 +1227,10 @@ static int wsa883x_spkr_event(struct snd_soc_dapm_widget *w,
switch (event) {
case SND_SOC_DAPM_POST_PMU:
+ mutex_lock(&wsa883x->sp_lock);
+ wsa883x->pa_on = true;
+ mutex_unlock(&wsa883x->sp_lock);
+
switch (wsa883x->dev_mode) {
case RECEIVER:
snd_soc_component_write_field(component, WSA883X_CDC_PATH_MODE,
@@ -1235,6 +1280,9 @@ static int wsa883x_spkr_event(struct snd_soc_dapm_widget *w,
WSA883X_GLOBAL_PA_EN_MASK, 0);
snd_soc_component_write_field(component, WSA883X_PDM_WD_CTL,
WSA883X_PDM_EN_MASK, 0);
+ mutex_lock(&wsa883x->sp_lock);
+ wsa883x->pa_on = false;
+ mutex_unlock(&wsa883x->sp_lock);
break;
}
return 0;
@@ -1367,6 +1415,176 @@ static struct snd_soc_dai_driver wsa883x_dais[] = {
},
};
+static int wsa883x_get_temp(struct wsa883x_priv *wsa883x, long *temp)
+{
+ unsigned int d1_msb = 0, d1_lsb = 0, d2_msb = 0, d2_lsb = 0;
+ unsigned int dmeas_msb = 0, dmeas_lsb = 0;
+ int d1, d2, dmeas;
+ unsigned int mask;
+ int ret, range;
+ long val;
+
+ guard(mutex)(&wsa883x->sp_lock);
+
+ if (wsa883x->pa_on) {
+ /*
+ * Reading temperature is possible only when Power Amplifier is
+ * off. Report last cached data.
+ */
+ *temp = wsa883x->temperature * 1000;
+ return 0;
+ }
+
+ ret = pm_runtime_resume_and_get(wsa883x->dev);
+ if (ret < 0)
+ return ret;
+
+ mask = WSA883X_PA_FSM_BYP_DC_CAL_EN_MASK |
+ WSA883X_PA_FSM_BYP_CLK_WD_EN_MASK |
+ WSA883X_PA_FSM_BYP_BG_EN_MASK |
+ WSA883X_PA_FSM_BYP_D_UNMUTE_MASK |
+ WSA883X_PA_FSM_BYP_SPKR_PROT_EN_MASK |
+ WSA883X_PA_FSM_BYP_TSADC_EN_MASK;
+
+ /*
+ * Here and further do not care about read or update failures.
+ * For example, before turning the amplifier on for the first
+ * time, reading WSA883X_TEMP_DIN_MSB will always return 0.
+ * Instead, check if returned value is within reasonable
+ * thresholds.
+ */
+ regmap_update_bits(wsa883x->regmap, WSA883X_PA_FSM_BYP, mask, mask);
+
+ regmap_update_bits(wsa883x->regmap, WSA883X_TADC_VALUE_CTL,
+ WSA883X_TADC_VALUE_CTL_TEMP_VALUE_RD_EN_MASK,
+ FIELD_PREP(WSA883X_TADC_VALUE_CTL_TEMP_VALUE_RD_EN_MASK, 0x0));
+
+ regmap_read(wsa883x->regmap, WSA883X_TEMP_MSB, &dmeas_msb);
+ regmap_read(wsa883x->regmap, WSA883X_TEMP_LSB, &dmeas_lsb);
+
+ regmap_update_bits(wsa883x->regmap, WSA883X_TADC_VALUE_CTL,
+ WSA883X_TADC_VALUE_CTL_TEMP_VALUE_RD_EN_MASK,
+ FIELD_PREP(WSA883X_TADC_VALUE_CTL_TEMP_VALUE_RD_EN_MASK, 0x1));
+
+ regmap_read(wsa883x->regmap, WSA883X_OTP_REG_1, &d1_msb);
+ regmap_read(wsa883x->regmap, WSA883X_OTP_REG_2, &d1_lsb);
+ regmap_read(wsa883x->regmap, WSA883X_OTP_REG_3, &d2_msb);
+ regmap_read(wsa883x->regmap, WSA883X_OTP_REG_4, &d2_lsb);
+
+ regmap_update_bits(wsa883x->regmap, WSA883X_PA_FSM_BYP, mask, 0x0);
+
+ dmeas = (((dmeas_msb & 0xff) << 0x8) | (dmeas_lsb & 0xff)) >> 0x6;
+ d1 = (((d1_msb & 0xff) << 0x8) | (d1_lsb & 0xff)) >> 0x6;
+ d2 = (((d2_msb & 0xff) << 0x8) | (d2_lsb & 0xff)) >> 0x6;
+
+ if (d1 == d2) {
+ /* Incorrect data in OTP? */
+ ret = -EINVAL;
+ goto out;
+ }
+
+ val = WSA883X_T1_TEMP + (((dmeas - d1) * (WSA883X_T2_TEMP - WSA883X_T1_TEMP)) / (d2 - d1));
+ range = WSA883X_HIGH_TEMP_THRESHOLD - WSA883X_LOW_TEMP_THRESHOLD;
+ if (in_range(val, WSA883X_LOW_TEMP_THRESHOLD, range)) {
+ wsa883x->temperature = val;
+ *temp = val * 1000;
+ ret = 0;
+ } else {
+ ret = -EAGAIN;
+ }
+out:
+ pm_runtime_put_autosuspend(wsa883x->dev);
+
+ return ret;
+}
+
+static umode_t wsa883x_hwmon_is_visible(const void *data,
+ enum hwmon_sensor_types type, u32 attr,
+ int channel)
+{
+ if (type != hwmon_temp)
+ return 0;
+
+ switch (attr) {
+ case hwmon_temp_input:
+ return 0444;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int wsa883x_hwmon_read(struct device *dev,
+ enum hwmon_sensor_types type,
+ u32 attr, int channel, long *temp)
+{
+ int ret;
+
+ switch (attr) {
+ case hwmon_temp_input:
+ ret = wsa883x_get_temp(dev_get_drvdata(dev), temp);
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+ return ret;
+}
+
+static const struct hwmon_channel_info *const wsa883x_hwmon_info[] = {
+ HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT),
+ NULL
+};
+
+static const struct hwmon_ops wsa883x_hwmon_ops = {
+ .is_visible = wsa883x_hwmon_is_visible,
+ .read = wsa883x_hwmon_read,
+};
+
+static const struct hwmon_chip_info wsa883x_hwmon_chip_info = {
+ .ops = &wsa883x_hwmon_ops,
+ .info = wsa883x_hwmon_info,
+};
+
+static void wsa883x_reset_assert(void *data)
+{
+ struct wsa883x_priv *wsa883x = data;
+
+ if (wsa883x->sd_reset)
+ reset_control_assert(wsa883x->sd_reset);
+ else
+ gpiod_direction_output(wsa883x->sd_n, 1);
+}
+
+static void wsa883x_reset_deassert(struct wsa883x_priv *wsa883x)
+{
+ if (wsa883x->sd_reset)
+ reset_control_deassert(wsa883x->sd_reset);
+ else
+ gpiod_direction_output(wsa883x->sd_n, 0);
+}
+
+static int wsa883x_get_reset(struct device *dev, struct wsa883x_priv *wsa883x)
+{
+ wsa883x->sd_reset = devm_reset_control_get_optional_shared(dev, NULL);
+ if (IS_ERR(wsa883x->sd_reset))
+ return dev_err_probe(dev, PTR_ERR(wsa883x->sd_reset),
+ "Failed to get reset\n");
+
+ /* if sd_reset: NULL, so use the backwards compatible way for powerdown-gpios */
+ if (!wsa883x->sd_reset) {
+ wsa883x->sd_n = devm_gpiod_get_optional(dev, "powerdown",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(wsa883x->sd_n))
+ return dev_err_probe(dev, PTR_ERR(wsa883x->sd_n),
+ "Shutdown Control GPIO not found\n");
+ }
+
+ return 0;
+}
+
static int wsa883x_probe(struct sdw_slave *pdev,
const struct sdw_device_id *id)
{
@@ -1387,13 +1605,9 @@ static int wsa883x_probe(struct sdw_slave *pdev,
if (ret)
return dev_err_probe(dev, ret, "Failed to enable vdd regulator\n");
- wsa883x->sd_n = devm_gpiod_get_optional(dev, "powerdown",
- GPIOD_FLAGS_BIT_NONEXCLUSIVE | GPIOD_OUT_HIGH);
- if (IS_ERR(wsa883x->sd_n)) {
- ret = dev_err_probe(dev, PTR_ERR(wsa883x->sd_n),
- "Shutdown Control GPIO not found\n");
+ ret = wsa883x_get_reset(dev, wsa883x);
+ if (ret)
goto err;
- }
dev_set_drvdata(dev, wsa883x);
wsa883x->slave = pdev;
@@ -1402,8 +1616,9 @@ static int wsa883x_probe(struct sdw_slave *pdev,
wsa883x->sconfig.bps = 1;
wsa883x->sconfig.direction = SDW_DATA_DIR_RX;
wsa883x->sconfig.type = SDW_STREAM_PDM;
+ mutex_init(&wsa883x->sp_lock);
- /**
+ /*
* Port map index starts with 0, however the data port for this codec
* are from index 1
*/
@@ -1415,15 +1630,31 @@ static int wsa883x_probe(struct sdw_slave *pdev,
pdev->prop.simple_clk_stop_capable = true;
pdev->prop.sink_dpn_prop = wsa_sink_dpn_prop;
pdev->prop.scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY;
- gpiod_direction_output(wsa883x->sd_n, 0);
+
+ wsa883x_reset_deassert(wsa883x);
+ ret = devm_add_action_or_reset(dev, wsa883x_reset_assert, wsa883x);
+ if (ret)
+ return ret;
wsa883x->regmap = devm_regmap_init_sdw(pdev, &wsa883x_regmap_config);
if (IS_ERR(wsa883x->regmap)) {
- gpiod_direction_output(wsa883x->sd_n, 1);
ret = dev_err_probe(dev, PTR_ERR(wsa883x->regmap),
"regmap_init failed\n");
goto err;
}
+
+ if (IS_REACHABLE(CONFIG_HWMON)) {
+ struct device *hwmon;
+
+ hwmon = devm_hwmon_device_register_with_info(dev, "wsa883x",
+ wsa883x,
+ &wsa883x_hwmon_chip_info,
+ NULL);
+ if (IS_ERR(hwmon))
+ return dev_err_probe(dev, PTR_ERR(hwmon),
+ "Failed to register hwmon sensor\n");
+ }
+
pm_runtime_set_autosuspend_delay(dev, 3000);
pm_runtime_use_autosuspend(dev);
pm_runtime_mark_last_busy(dev);
@@ -1442,7 +1673,7 @@ err:
}
-static int __maybe_unused wsa883x_runtime_suspend(struct device *dev)
+static int wsa883x_runtime_suspend(struct device *dev)
{
struct regmap *regmap = dev_get_regmap(dev, NULL);
@@ -1452,7 +1683,7 @@ static int __maybe_unused wsa883x_runtime_suspend(struct device *dev)
return 0;
}
-static int __maybe_unused wsa883x_runtime_resume(struct device *dev)
+static int wsa883x_runtime_resume(struct device *dev)
{
struct regmap *regmap = dev_get_regmap(dev, NULL);
@@ -1463,7 +1694,7 @@ static int __maybe_unused wsa883x_runtime_resume(struct device *dev)
}
static const struct dev_pm_ops wsa883x_pm_ops = {
- SET_RUNTIME_PM_OPS(wsa883x_runtime_suspend, wsa883x_runtime_resume, NULL)
+ RUNTIME_PM_OPS(wsa883x_runtime_suspend, wsa883x_runtime_resume, NULL)
};
static const struct sdw_device_id wsa883x_swr_id[] = {
@@ -1476,7 +1707,7 @@ MODULE_DEVICE_TABLE(sdw, wsa883x_swr_id);
static struct sdw_driver wsa883x_codec_driver = {
.driver = {
.name = "wsa883x-codec",
- .pm = &wsa883x_pm_ops,
+ .pm = pm_ptr(&wsa883x_pm_ops),
.suppress_bind_attrs = true,
},
.probe = wsa883x_probe,
generated by cgit (git 2.34.1) at 2025-12-24 20:45:48 +0000