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Diffstat (limited to 'sound/soc/codecs/tas2770.c')
-rw-r--r--sound/soc/codecs/tas2770.c340
1 files changed, 243 insertions, 97 deletions
diff --git a/sound/soc/codecs/tas2770.c b/sound/soc/codecs/tas2770.c
index 6549e7fef3e3..6f878b01716f 100644
--- a/sound/soc/codecs/tas2770.c
+++ b/sound/soc/codecs/tas2770.c
@@ -12,15 +12,14 @@
#include <linux/err.h>
#include <linux/init.h>
#include <linux/delay.h>
+#include <linux/hwmon.h>
#include <linux/pm.h>
#include <linux/i2c.h>
-#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/regulator/consumer.h>
#include <linux/firmware.h>
#include <linux/regmap.h>
#include <linux/of.h>
-#include <linux/of_gpio.h>
#include <linux/slab.h>
#include <sound/soc.h>
#include <sound/pcm.h>
@@ -38,40 +37,30 @@ static void tas2770_reset(struct tas2770_priv *tas2770)
gpiod_set_value_cansleep(tas2770->reset_gpio, 0);
msleep(20);
gpiod_set_value_cansleep(tas2770->reset_gpio, 1);
+ usleep_range(1000, 2000);
}
snd_soc_component_write(tas2770->component, TAS2770_SW_RST,
TAS2770_RST);
+ usleep_range(1000, 2000);
}
-static int tas2770_set_bias_level(struct snd_soc_component *component,
- enum snd_soc_bias_level level)
+static int tas2770_update_pwr_ctrl(struct tas2770_priv *tas2770)
{
- struct tas2770_priv *tas2770 =
- snd_soc_component_get_drvdata(component);
+ struct snd_soc_component *component = tas2770->component;
+ unsigned int val;
+ int ret;
- switch (level) {
- case SND_SOC_BIAS_ON:
- snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
- TAS2770_PWR_CTRL_MASK,
- TAS2770_PWR_CTRL_ACTIVE);
- break;
- case SND_SOC_BIAS_STANDBY:
- case SND_SOC_BIAS_PREPARE:
- snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
- TAS2770_PWR_CTRL_MASK,
- TAS2770_PWR_CTRL_MUTE);
- break;
- case SND_SOC_BIAS_OFF:
- snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
- TAS2770_PWR_CTRL_MASK,
- TAS2770_PWR_CTRL_SHUTDOWN);
- break;
+ if (tas2770->dac_powered)
+ val = tas2770->unmuted ?
+ TAS2770_PWR_CTRL_ACTIVE : TAS2770_PWR_CTRL_MUTE;
+ else
+ val = TAS2770_PWR_CTRL_SHUTDOWN;
- default:
- dev_err(tas2770->dev, "wrong power level setting %d\n", level);
- return -EINVAL;
- }
+ ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
+ TAS2770_PWR_CTRL_MASK, val);
+ if (ret < 0)
+ return ret;
return 0;
}
@@ -110,10 +99,9 @@ static int tas2770_codec_resume(struct snd_soc_component *component)
if (tas2770->sdz_gpio) {
gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);
+ usleep_range(1000, 2000);
} else {
- ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
- TAS2770_PWR_CTRL_MASK,
- TAS2770_PWR_CTRL_ACTIVE);
+ ret = tas2770_update_pwr_ctrl(tas2770);
if (ret < 0)
return ret;
}
@@ -149,24 +137,19 @@ static int tas2770_dac_event(struct snd_soc_dapm_widget *w,
switch (event) {
case SND_SOC_DAPM_POST_PMU:
- ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
- TAS2770_PWR_CTRL_MASK,
- TAS2770_PWR_CTRL_MUTE);
+ tas2770->dac_powered = 1;
+ ret = tas2770_update_pwr_ctrl(tas2770);
break;
case SND_SOC_DAPM_PRE_PMD:
- ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
- TAS2770_PWR_CTRL_MASK,
- TAS2770_PWR_CTRL_SHUTDOWN);
+ tas2770->dac_powered = 0;
+ ret = tas2770_update_pwr_ctrl(tas2770);
break;
default:
dev_err(tas2770->dev, "Not supported evevt\n");
return -EINVAL;
}
- if (ret < 0)
- return ret;
-
- return 0;
+ return ret;
}
static const struct snd_kcontrol_new isense_switch =
@@ -174,11 +157,37 @@ static const struct snd_kcontrol_new isense_switch =
static const struct snd_kcontrol_new vsense_switch =
SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 2, 1, 1);
+static int sense_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
+ struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component);
+
+ /*
+ * Powering up ISENSE/VSENSE requires a trip through the shutdown state.
+ * Do that here to ensure that our changes are applied properly, otherwise
+ * we might end up with non-functional IVSENSE if playback started earlier,
+ * which would break software speaker protection.
+ */
+ switch (event) {
+ case SND_SOC_DAPM_PRE_REG:
+ return snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
+ TAS2770_PWR_CTRL_MASK,
+ TAS2770_PWR_CTRL_SHUTDOWN);
+ case SND_SOC_DAPM_POST_REG:
+ return tas2770_update_pwr_ctrl(tas2770);
+ default:
+ return 0;
+ }
+}
+
static const struct snd_soc_dapm_widget tas2770_dapm_widgets[] = {
SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0, &tas2770_asi1_mux),
- SND_SOC_DAPM_SWITCH("ISENSE", TAS2770_PWR_CTRL, 3, 1, &isense_switch),
- SND_SOC_DAPM_SWITCH("VSENSE", TAS2770_PWR_CTRL, 2, 1, &vsense_switch),
+ SND_SOC_DAPM_SWITCH_E("ISENSE", TAS2770_PWR_CTRL, 3, 1, &isense_switch,
+ sense_event, SND_SOC_DAPM_PRE_REG | SND_SOC_DAPM_POST_REG),
+ SND_SOC_DAPM_SWITCH_E("VSENSE", TAS2770_PWR_CTRL, 2, 1, &vsense_switch,
+ sense_event, SND_SOC_DAPM_PRE_REG | SND_SOC_DAPM_POST_REG),
SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2770_dac_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_OUTPUT("OUT"),
@@ -200,23 +209,51 @@ static const struct snd_soc_dapm_route tas2770_audio_map[] = {
static int tas2770_mute(struct snd_soc_dai *dai, int mute, int direction)
{
struct snd_soc_component *component = dai->component;
+ struct tas2770_priv *tas2770 =
+ snd_soc_component_get_drvdata(component);
+
+ tas2770->unmuted = !mute;
+ return tas2770_update_pwr_ctrl(tas2770);
+}
+
+static int tas2770_set_ivsense_transmit(struct tas2770_priv *tas2770,
+ int i_slot, int v_slot)
+{
+ struct snd_soc_component *component = tas2770->component;
int ret;
- if (mute)
- ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
- TAS2770_PWR_CTRL_MASK,
- TAS2770_PWR_CTRL_MUTE);
- else
- ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
- TAS2770_PWR_CTRL_MASK,
- TAS2770_PWR_CTRL_ACTIVE);
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG5,
+ TAS2770_TDM_CFG_REG5_VSNS_MASK |
+ TAS2770_TDM_CFG_REG5_50_MASK,
+ TAS2770_TDM_CFG_REG5_VSNS_ENABLE |
+ v_slot);
+ if (ret < 0)
+ return ret;
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG6,
+ TAS2770_TDM_CFG_REG6_ISNS_MASK |
+ TAS2770_TDM_CFG_REG6_50_MASK,
+ TAS2770_TDM_CFG_REG6_ISNS_ENABLE |
+ i_slot);
if (ret < 0)
return ret;
return 0;
}
+static int tas2770_set_pdm_transmit(struct tas2770_priv *tas2770, int slot)
+{
+ struct snd_soc_component *component = tas2770->component;
+ int ret;
+
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG7,
+ TAS2770_TDM_CFG_REG7_PDM_MASK |
+ TAS2770_TDM_CFG_REG7_50_MASK,
+ TAS2770_TDM_CFG_REG7_PDM_ENABLE |
+ slot);
+ return ret;
+}
+
static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth)
{
int ret;
@@ -227,19 +264,16 @@ static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth)
ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
TAS2770_TDM_CFG_REG2_RXW_MASK,
TAS2770_TDM_CFG_REG2_RXW_16BITS);
- tas2770->v_sense_slot = tas2770->i_sense_slot + 2;
break;
case SNDRV_PCM_FORMAT_S24_LE:
ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
TAS2770_TDM_CFG_REG2_RXW_MASK,
TAS2770_TDM_CFG_REG2_RXW_24BITS);
- tas2770->v_sense_slot = tas2770->i_sense_slot + 4;
break;
case SNDRV_PCM_FORMAT_S32_LE:
ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
TAS2770_TDM_CFG_REG2_RXW_MASK,
TAS2770_TDM_CFG_REG2_RXW_32BITS);
- tas2770->v_sense_slot = tas2770->i_sense_slot + 4;
break;
default:
@@ -249,22 +283,6 @@ static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth)
if (ret < 0)
return ret;
- ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG5,
- TAS2770_TDM_CFG_REG5_VSNS_MASK |
- TAS2770_TDM_CFG_REG5_50_MASK,
- TAS2770_TDM_CFG_REG5_VSNS_ENABLE |
- tas2770->v_sense_slot);
- if (ret < 0)
- return ret;
-
- ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG6,
- TAS2770_TDM_CFG_REG6_ISNS_MASK |
- TAS2770_TDM_CFG_REG6_50_MASK,
- TAS2770_TDM_CFG_REG6_ISNS_ENABLE |
- tas2770->i_sense_slot);
- if (ret < 0)
- return ret;
-
return 0;
}
@@ -334,21 +352,27 @@ static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
struct snd_soc_component *component = dai->component;
struct tas2770_priv *tas2770 =
snd_soc_component_get_drvdata(component);
- u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0;
+ u8 tdm_rx_start_slot = 0, invert_fpol = 0, fpol_preinv = 0, asi_cfg_1 = 0;
int ret;
- switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
- case SND_SOC_DAIFMT_CBS_CFS:
+ switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_CBC_CFC:
break;
default:
- dev_err(tas2770->dev, "ASI format master is not found\n");
+ dev_err(tas2770->dev, "ASI invalid DAI clocking\n");
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_IF:
+ invert_fpol = 1;
+ fallthrough;
case SND_SOC_DAIFMT_NB_NF:
asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_RSING;
break;
+ case SND_SOC_DAIFMT_IB_IF:
+ invert_fpol = 1;
+ fallthrough;
case SND_SOC_DAIFMT_IB_NF:
asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_FALING;
break;
@@ -366,15 +390,19 @@ static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
tdm_rx_start_slot = 1;
+ fpol_preinv = 0;
break;
case SND_SOC_DAIFMT_DSP_A:
tdm_rx_start_slot = 0;
+ fpol_preinv = 1;
break;
case SND_SOC_DAIFMT_DSP_B:
tdm_rx_start_slot = 1;
+ fpol_preinv = 1;
break;
case SND_SOC_DAIFMT_LEFT_J:
tdm_rx_start_slot = 0;
+ fpol_preinv = 1;
break;
default:
dev_err(tas2770->dev,
@@ -388,6 +416,14 @@ static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
if (ret < 0)
return ret;
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_FPOL_MASK,
+ (fpol_preinv ^ invert_fpol)
+ ? TAS2770_TDM_CFG_REG0_FPOL_RSING
+ : TAS2770_TDM_CFG_REG0_FPOL_FALING);
+ if (ret < 0)
+ return ret;
+
return 0;
}
@@ -403,21 +439,13 @@ static int tas2770_set_dai_tdm_slot(struct snd_soc_dai *dai,
if (tx_mask == 0 || rx_mask != 0)
return -EINVAL;
- if (slots == 1) {
- if (tx_mask != 1)
- return -EINVAL;
-
- left_slot = 0;
- right_slot = 0;
+ left_slot = __ffs(tx_mask);
+ tx_mask &= ~(1 << left_slot);
+ if (tx_mask == 0) {
+ right_slot = left_slot;
} else {
- left_slot = __ffs(tx_mask);
- tx_mask &= ~(1 << left_slot);
- if (tx_mask == 0) {
- right_slot = left_slot;
- } else {
- right_slot = __ffs(tx_mask);
- tx_mask &= ~(1 << right_slot);
- }
+ right_slot = __ffs(tx_mask);
+ tx_mask &= ~(1 << right_slot);
}
if (tx_mask != 0 || left_slot >= slots || right_slot >= slots)
@@ -486,7 +514,7 @@ static struct snd_soc_dai_driver tas2770_dai_driver[] = {
.id = 0,
.playback = {
.stream_name = "ASI1 Playback",
- .channels_min = 2,
+ .channels_min = 1,
.channels_max = 2,
.rates = TAS2770_RATES,
.formats = TAS2770_FORMATS,
@@ -503,23 +531,126 @@ static struct snd_soc_dai_driver tas2770_dai_driver[] = {
},
};
+static int tas2770_read_die_temp(struct tas2770_priv *tas2770, long *result)
+{
+ int ret = 0;
+ int reading, msb, lsb;
+
+ ret = regmap_read(tas2770->regmap, TAS2770_TEMP_MSB, &msb);
+ if (ret)
+ return ret;
+
+ ret = regmap_read(tas2770->regmap, TAS2770_TEMP_LSB, &lsb);
+ if (ret)
+ return ret;
+
+ reading = (msb << 4) | (lsb >> 4);
+
+ /*
+ * As per datasheet: divide register by 16 and subtract 93 to get
+ * degrees Celsius. hwmon requires millidegrees. Let's avoid rounding
+ * errors by subtracting 93 * 16 then multiplying by 1000 / 16.
+ *
+ * NOTE: The ADC registers are initialised to 0 on reset. This means
+ * that the temperature will read -93 *C until the chip is brought out
+ * of software shutdown (e.g. the PCM it's attached to is opened). The
+ * ADC is also shut down in software shutdown/low-power mode, so the
+ * value read back from its registers will be the last value sampled
+ * before entering software shutdown.
+ */
+ *result = (reading - (93 * 16)) * (1000 / 16);
+ return 0;
+}
+
+static umode_t tas2770_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 tas2770_hwmon_read(struct device *dev,
+ enum hwmon_sensor_types type,
+ u32 attr, int channel, long *val)
+{
+ struct tas2770_priv *tas2770 = dev_get_drvdata(dev);
+ int ret;
+
+ switch (attr) {
+ case hwmon_temp_input:
+ ret = tas2770_read_die_temp(tas2770, val);
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+ return ret;
+}
+
+static const struct hwmon_channel_info *const tas2770_hwmon_info[] = {
+ HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT),
+ NULL
+};
+
+static const struct hwmon_ops tas2770_hwmon_ops = {
+ .is_visible = tas2770_hwmon_is_visible,
+ .read = tas2770_hwmon_read,
+};
+
+static const struct hwmon_chip_info tas2770_hwmon_chip_info = {
+ .ops = &tas2770_hwmon_ops,
+ .info = tas2770_hwmon_info,
+};
+
+static const struct regmap_config tas2770_i2c_regmap;
+
static int tas2770_codec_probe(struct snd_soc_component *component)
{
struct tas2770_priv *tas2770 =
snd_soc_component_get_drvdata(component);
+ int ret;
tas2770->component = component;
- if (tas2770->sdz_gpio)
+ if (tas2770->sdz_gpio) {
gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);
+ usleep_range(1000, 2000);
+ }
tas2770_reset(tas2770);
+ regmap_reinit_cache(tas2770->regmap, &tas2770_i2c_regmap);
+
+ if (tas2770->i_sense_slot != -1 && tas2770->v_sense_slot != -1) {
+ ret = tas2770_set_ivsense_transmit(tas2770, tas2770->i_sense_slot,
+ tas2770->v_sense_slot);
+
+ if (ret < 0)
+ return ret;
+ }
+
+ if (tas2770->pdm_slot != -1) {
+ ret = tas2770_set_pdm_transmit(tas2770, tas2770->pdm_slot);
+
+ if (ret < 0)
+ return ret;
+ }
return 0;
}
static DECLARE_TLV_DB_SCALE(tas2770_digital_tlv, 1100, 50, 0);
-static DECLARE_TLV_DB_SCALE(tas2770_playback_volume, -12750, 50, 0);
+static DECLARE_TLV_DB_SCALE(tas2770_playback_volume, -10050, 50, 0);
static const struct snd_kcontrol_new tas2770_snd_controls[] = {
SOC_SINGLE_TLV("Speaker Playback Volume", TAS2770_PLAY_CFG_REG2,
@@ -532,7 +663,6 @@ static const struct snd_soc_component_driver soc_component_driver_tas2770 = {
.probe = tas2770_codec_probe,
.suspend = tas2770_codec_suspend,
.resume = tas2770_codec_resume,
- .set_bias_level = tas2770_set_bias_level,
.controls = tas2770_snd_controls,
.num_controls = ARRAY_SIZE(tas2770_snd_controls),
.dapm_widgets = tas2770_dapm_widgets,
@@ -541,7 +671,6 @@ static const struct snd_soc_component_driver soc_component_driver_tas2770 = {
.num_dapm_routes = ARRAY_SIZE(tas2770_audio_map),
.idle_bias_on = 1,
.endianness = 1,
- .non_legacy_dai_naming = 1,
};
static int tas2770_register_codec(struct tas2770_priv *tas2770)
@@ -644,7 +773,7 @@ static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770)
dev_info(tas2770->dev, "Property %s is missing setting default slot\n",
"ti,imon-slot-no");
- tas2770->i_sense_slot = 0;
+ tas2770->i_sense_slot = -1;
}
rc = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
@@ -653,9 +782,14 @@ static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770)
dev_info(tas2770->dev, "Property %s is missing setting default slot\n",
"ti,vmon-slot-no");
- tas2770->v_sense_slot = 2;
+ tas2770->v_sense_slot = -1;
}
+ rc = fwnode_property_read_u32(dev->fwnode, "ti,pdm-slot-no",
+ &tas2770->pdm_slot);
+ if (rc)
+ tas2770->pdm_slot = -1;
+
tas2770->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);
if (IS_ERR(tas2770->sdz_gpio)) {
if (PTR_ERR(tas2770->sdz_gpio) == -EPROBE_DEFER)
@@ -667,8 +801,7 @@ static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770)
return 0;
}
-static int tas2770_i2c_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int tas2770_i2c_probe(struct i2c_client *client)
{
struct tas2770_priv *tas2770;
int result;
@@ -708,6 +841,19 @@ static int tas2770_i2c_probe(struct i2c_client *client,
}
}
+ if (IS_REACHABLE(CONFIG_HWMON)) {
+ struct device *hwmon;
+
+ hwmon = devm_hwmon_device_register_with_info(&client->dev, "tas2770",
+ tas2770,
+ &tas2770_hwmon_chip_info,
+ NULL);
+ if (IS_ERR(hwmon)) {
+ return dev_err_probe(&client->dev, PTR_ERR(hwmon),
+ "Failed to register temp sensor\n");
+ }
+ }
+
result = tas2770_register_codec(tas2770);
if (result)
dev_err(tas2770->dev, "Register codec failed.\n");
@@ -716,7 +862,7 @@ static int tas2770_i2c_probe(struct i2c_client *client,
}
static const struct i2c_device_id tas2770_i2c_id[] = {
- { "tas2770", 0},
+ { "tas2770"},
{ }
};
MODULE_DEVICE_TABLE(i2c, tas2770_i2c_id);
generated by cgit (git 2.34.1) at 2025-12-26 07:32:31 +0000