[PATCH v2 3/4] ALSA: hda/tas2781: add TAS2563 support for 14ARB7

Gergo Koteles
2023-12-30T00:10:00Z

The INT8866 belongs to the Lenovo Yoga 7 Gen 7 AMD 14ARB7
laptop. It has two TAS2563 amplifier. Add the PNP ID
and calibration functions to handle them.

ACPI excerpt:

Scope (_SB.I2CD)
{
Device (TAS)
{
Name (_HID, "INT8866") // _HID: Hardware ID
Name (_UID, Zero) // _UID: Unique ID
Method (_CRS, 0, NotSerialized) // _CRS: Current Resource Settings
{
Name (RBUF, ResourceTemplate ()
{
I2cSerialBusV2 (0x004C, ControllerInitiated, 0x00061A80,
AddressingMode7Bit, "\\_SB.I2CD",
0x00, ResourceConsumer, , Exclusive,
)
I2cSerialBusV2 (0x004D, ControllerInitiated, 0x00061A80,
AddressingMode7Bit, "\\_SB.I2CD",
0x00, ResourceConsumer, , Exclusive,
)
GpioInt (Edge, ActiveLow, SharedAndWake, PullNone, 0x0000,
"\\_SB.GPIO", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0020
}
})
Return (RBUF) /* \_SB_.I2CD.TAS_._CRS.RBUF */
}

Method (_STA, 0, NotSerialized) // _STA: Status
{
Return (0x0F)
}
}
}

Signed-off-by: Gergo Koteles <soyer@irl.hu>
---
include/sound/tas2781.h | 1 +
sound/pci/hda/tas2781_hda_i2c.c | 87 +++++++++++++++++++++++++++++++++
2 files changed, 88 insertions(+)

diff --git a/include/sound/tas2781.h b/include/sound/tas2781.h
index dde9f8120d4c..0a86ab8d47b9 100644
--- a/include/sound/tas2781.h
+++ b/include/sound/tas2781.h
@@ -22,6 +22,7 @@
#define TAS2781_DRV_VER 1
#define SMARTAMP_MODULE_NAME "tas2781"
#define TAS2781_GLOBAL_ADDR 0x40
+#define TAS2563_GLOBAL_ADDR 0x48
#define TASDEVICE_RATES (SNDRV_PCM_RATE_44100 |\
SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\
SNDRV_PCM_RATE_88200)
diff --git a/sound/pci/hda/tas2781_hda_i2c.c b/sound/pci/hda/tas2781_hda_i2c.c
index 49477d17b07c..057688ca29bf 100644
--- a/sound/pci/hda/tas2781_hda_i2c.c
+++ b/sound/pci/hda/tas2781_hda_i2c.c
@@ -65,6 +65,24 @@ enum calib_data {
CALIB_MAX
};

+#define TAS2563_MAX_CHANNELS 4
+
+#define TAS2563_CAL_POWER TASDEVICE_REG(0, 0x0d, 0x3c)
+#define TAS2563_CAL_R0 TASDEVICE_REG(0, 0x0f, 0x34)
+#define TAS2563_CAL_INVR0 TASDEVICE_REG(0, 0x0f, 0x40)
+#define TAS2563_CAL_R0_LOW TASDEVICE_REG(0, 0x0f, 0x48)
+#define TAS2563_CAL_TLIM TASDEVICE_REG(0, 0x10, 0x14)
+#define TAS2563_CAL_N 5
+#define TAS2563_CAL_DATA_SIZE 4
+#define TAS2563_CAL_CH_SIZE 20
+#define TAS2563_CAL_ARRAY_SIZE 80
+
+static unsigned int cal_regs[TAS2563_CAL_N] = {
+ TAS2563_CAL_POWER, TAS2563_CAL_R0, TAS2563_CAL_INVR0,
+ TAS2563_CAL_R0_LOW, TAS2563_CAL_TLIM,
+};
+
+
struct tas2781_hda {
struct device *dev;
struct tasdevice_priv *priv;
@@ -404,6 +422,69 @@ static const struct snd_kcontrol_new tas2781_dsp_conf_ctrl = {
.put = tasdevice_config_put,
};

+static void tas2563_apply_calib(struct tasdevice_priv *tas_priv)
+{
+ unsigned int data;
+ int offset = 0;
+ int ret;
+
+ for (int i = 0; i < tas_priv->ndev; i++) {
+ for (int j = 0; j < TAS2563_CAL_N; ++j) {
+ data = cpu_to_be32(
+ *(uint32_t *)&tas_priv->cali_data.data[offset]);
+ ret = tasdevice_dev_bulk_write(tas_priv, i, cal_regs[j],
+ (unsigned char *)&data, TAS2563_CAL_DATA_SIZE);
+ if (ret)
+ dev_err(tas_priv->dev,
+ "Error writing calib regs\n");
+ offset += TAS2563_CAL_DATA_SIZE;
+ }
+ }
+}
+
+static int tas2563_save_calibration(struct tasdevice_priv *tas_priv)
+{
+ static efi_guid_t efi_guid = EFI_GUID(0x1f52d2a1, 0xbb3a, 0x457d, 0xbc,
+ 0x09, 0x43, 0xa3, 0xf4, 0x31, 0x0a, 0x92);
+
+ static efi_char16_t *efi_vars[TAS2563_MAX_CHANNELS][TAS2563_CAL_N] = {
+ { L"Power_1", L"R0_1", L"InvR0_1", L"R0_Low_1", L"TLim_1" },
+ { L"Power_2", L"R0_2", L"InvR0_2", L"R0_Low_2", L"TLim_2" },
+ { L"Power_3", L"R0_3", L"InvR0_3", L"R0_Low_3", L"TLim_3" },
+ { L"Power_4", L"R0_4", L"InvR0_4", L"R0_Low_4", L"TLim_4" },
+ };
+
+ unsigned long max_size = TAS2563_CAL_DATA_SIZE;
+ unsigned int offset = 0;
+ efi_status_t status;
+ unsigned int attr;
+
+ tas_priv->cali_data.data = devm_kzalloc(tas_priv->dev,
+ TAS2563_CAL_ARRAY_SIZE, GFP_KERNEL);
+ if (!tas_priv->cali_data.data)
+ return -ENOMEM;
+
+ for (int i = 0; i < tas_priv->ndev; ++i) {
+ for (int j = 0; j < TAS2563_CAL_N; ++j) {
+ status = efi.get_variable(efi_vars[i][j],
+ &efi_guid, &attr, &max_size,
+ &tas_priv->cali_data.data[offset]);
+ if (status != EFI_SUCCESS ||
+ max_size != TAS2563_CAL_DATA_SIZE) {
+ dev_warn(tas_priv->dev,
+ "Calibration data read failed %ld\n", status);
+ return -EINVAL;
+ }
+ offset += TAS2563_CAL_DATA_SIZE;
+ }
+ }
+
+ tas_priv->cali_data.total_sz = offset;
+ tasdevice_apply_calibration(tas_priv);
+
+ return 0;
+}
+
static void tas2781_apply_calib(struct tasdevice_priv *tas_priv)
{
static const unsigned char page_array[CALIB_MAX] = {
@@ -700,6 +781,11 @@ static int tas2781_hda_i2c_probe(struct i2c_client *clt)
tas_hda->priv->save_calibration = tas2781_save_calibration;
tas_hda->priv->apply_calibration = tas2781_apply_calib;
tas_hda->priv->global_addr = TAS2781_GLOBAL_ADDR;
+ } else if (strstr(dev_name(&clt->dev), "INT8866")) {
+ device_name = "INT8866";
+ tas_hda->priv->save_calibration = tas2563_save_calibration;
+ tas_hda->priv->apply_calibration = tas2563_apply_calib;
+ tas_hda->priv->global_addr = TAS2563_GLOBAL_ADDR;
} else
return -ENODEV;

@@ -849,6 +935,7 @@ static const struct i2c_device_id tas2781_hda_i2c_id[] = {

static const struct acpi_device_id tas2781_acpi_hda_match[] = {
{"TIAS2781", 0 },
+ {"INT8866", 0 },
{}
};
MODULE_DEVICE_TABLE(acpi, tas2781_acpi_hda_match);
--
2.43.0