diff options
Diffstat (limited to 'sound/soc/codecs/wsa883x.c')
| -rw-r--r-- | sound/soc/codecs/wsa883x.c | 202 |
1 files changed, 198 insertions, 4 deletions
diff --git a/sound/soc/codecs/wsa883x.c b/sound/soc/codecs/wsa883x.c index 47da5674d7c9..d259e1d4d83d 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> @@ -156,8 +157,28 @@ #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 +448,17 @@ 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; @@ -441,6 +473,13 @@ struct wsa883x_priv { 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 { @@ -1186,6 +1225,10 @@ 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 +1278,9 @@ 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 +1413,140 @@ 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_mark_last_busy(wsa883x->dev); + 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 int wsa883x_probe(struct sdw_slave *pdev, const struct sdw_device_id *id) { @@ -1402,6 +1582,7 @@ 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 @@ -1424,6 +1605,19 @@ static int wsa883x_probe(struct sdw_slave *pdev, "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 +1636,7 @@ 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 +1646,7 @@ 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 +1657,7 @@ 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 +1670,7 @@ 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, |