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Message-ID: <20240326010905.2147-8-baojun.xu@ti.com>
Date: Tue, 26 Mar 2024 09:09:05 +0800
From: Baojun Xu <baojun.xu@...com>
To: <tiwai@...e.de>
CC: <robh+dt@...nel.org>, <andriy.shevchenko@...ux.intel.com>,
<lgirdwood@...il.com>, <perex@...ex.cz>,
<pierre-louis.bossart@...ux.intel.com>, <kevin-lu@...com>,
<13916275206@....com>, <alsa-devel@...a-project.org>,
<linux-kernel@...r.kernel.org>, <liam.r.girdwood@...el.com>,
<yung-chuan.liao@...ux.intel.com>, <baojun.xu@...com>,
<broonie@...nel.org>, <soyer@....hu>
Subject: [PATCH v1 8/8] ALSA: hda/tas2781: Add tas2781 SPI-based driver
Main file for tas2781 spi driver.
Signed-off-by: Baojun Xu <baojun.xu@...com>
---
sound/pci/hda/tas2781_hda_spi.c | 1284 +++++++++++++++++++++++++++++++
1 file changed, 1284 insertions(+)
create mode 100644 sound/pci/hda/tas2781_hda_spi.c
diff --git a/sound/pci/hda/tas2781_hda_spi.c b/sound/pci/hda/tas2781_hda_spi.c
new file mode 100644
index 000000000..ef3543dfc
--- /dev/null
+++ b/sound/pci/hda/tas2781_hda_spi.c
@@ -0,0 +1,1284 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// TAS2781 HDA SPI driver
+//
+// Copyright 2024 Texas Instruments, Inc.
+//
+// Author: Baojun Xu <baojun.xu@...com>
+
+#include <linux/acpi.h>
+#include <linux/crc8.h>
+#include <linux/crc32.h>
+#include <linux/efi.h>
+#include <linux/firmware.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+#include <sound/hda_codec.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <sound/tas2781-tlv.h>
+
+#include "tas2781-spi.h"
+
+#include "hda_local.h"
+#include "hda_auto_parser.h"
+#include "hda_component.h"
+#include "hda_jack.h"
+#include "hda_generic.h"
+
+#define TASDEVICE_SPEAKER_CALIBRATION_SIZE 20
+
+/* No standard control callbacks for SNDRV_CTL_ELEM_IFACE_CARD
+ * Define two controls, one is Volume control callbacks, the other is
+ * flag setting control callbacks.
+ */
+
+/* Volume control callbacks for tas2781 */
+#define ACARD_SINGLE_RANGE_EXT_TLV(xname, xreg, xshift, xmin, xmax, xinvert, \
+ xhandler_get, xhandler_put, tlv_array) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_CARD, .name = (xname),\
+ .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
+ SNDRV_CTL_ELEM_ACCESS_READWRITE,\
+ .tlv.p = (tlv_array), \
+ .info = snd_soc_info_volsw_range, \
+ .get = xhandler_get, .put = xhandler_put, \
+ .private_value = (unsigned long)&(struct soc_mixer_control) \
+ {.reg = xreg, .rreg = xreg, .shift = xshift, \
+ .rshift = xshift, .min = xmin, .max = xmax, \
+ .invert = xinvert} }
+
+/* Flag control callbacks for tas2781 */
+#define ACARD_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_CARD, .name = xname, \
+ .info = snd_ctl_boolean_mono_info, \
+ .get = xhandler_get, .put = xhandler_put, \
+ .private_value = xdata }
+
+
+enum calib_data {
+ R0_VAL = 0,
+ INV_R0,
+ R0LOW,
+ POWER,
+ TLIM,
+ CALIB_MAX
+};
+
+struct tas2781_hda {
+ struct device *dev;
+ struct gpio_desc *cs_gpio;
+ struct gpio_desc *reset_gpio;
+ struct tasdevice_priv *priv;
+ struct snd_kcontrol *dsp_prog_ctl;
+ struct snd_kcontrol *dsp_conf_ctl;
+ struct snd_kcontrol *prof_ctl;
+ struct snd_kcontrol *snd_ctls[3];
+};
+
+static const struct regmap_range_cfg tasdevice_ranges[] = {
+ {
+ .range_min = 0,
+ .range_max = 256 * 128,
+ .selector_reg = TASDEVICE_PAGE_SELECT,
+ .selector_mask = 0xff,
+ .selector_shift = 0,
+ .window_start = 0,
+ .window_len = 128,
+ },
+};
+
+static const struct regmap_config tasdevice_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .cache_type = REGCACHE_NONE,
+ .ranges = tasdevice_ranges,
+ .num_ranges = ARRAY_SIZE(tasdevice_ranges),
+ .max_register = 256 * 128,
+};
+
+
+static void tas2781_spi_reset(struct tasdevice_priv *tas_dev);
+static int tasdevice_spi_init(struct tasdevice_priv *tas_priv);
+static int tasdevice_spi_amp_putvol(struct tasdevice_priv *tas_priv,
+ struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc);
+static int tasdevice_spi_amp_getvol(struct tasdevice_priv *tas_priv,
+ struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc);
+static int tasdevice_spi_digital_putvol(struct tasdevice_priv *tas_priv,
+ struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc);
+static int tasdevice_spi_digital_getvol(struct tasdevice_priv *tas_priv,
+ struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc);
+
+static int tasdevice_spi_change_chn_book(struct tasdevice_priv *tas_priv,
+ unsigned short chn, int book)
+{
+ int ret = 0;
+
+ if (chn == tas_priv->index) {
+ struct tasdevice *tasdev = &tas_priv->tasdevice;
+ struct regmap *map = tas_priv->regmap;
+
+ if (tasdev->cur_book != book) {
+ /* Change to page 0 before book change.
+ */
+ ret = regmap_write(map, TASDEVICE_PAGE_SELECT, 0);
+ if (ret < 0) {
+ dev_err(tas_priv->dev, "%s, E=%d\n",
+ __func__, ret);
+ goto out;
+ }
+ ret = regmap_write(map, TASDEVICE_BOOKCTL_REG, book);
+ if (ret < 0) {
+ dev_err(tas_priv->dev, "%s, E=%d\n",
+ __func__, ret);
+ goto out;
+ }
+ tasdev->cur_book = book;
+ }
+ }
+
+out:
+ return ret;
+}
+
+int tasdevice_spi_dev_read(struct tasdevice_priv *tas_priv,
+ unsigned short chn, unsigned int reg, unsigned int *val)
+{
+ int ret = 0;
+
+ if (chn == tas_priv->index) {
+ struct regmap *map = tas_priv->regmap;
+
+ ret = tasdevice_spi_change_chn_book(tas_priv, chn,
+ TASDEVICE_BOOK_ID(reg));
+ if (ret < 0)
+ goto out;
+
+ ret = regmap_read(map, TASDEVICE_PGRG(reg), val);
+ if (ret < 0)
+ dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
+ }
+
+out:
+ return ret;
+}
+EXPORT_SYMBOL_GPL(tasdevice_spi_dev_read);
+
+int tasdevice_spi_dev_write(struct tasdevice_priv *tas_priv,
+ unsigned short chn, unsigned int reg, unsigned int value)
+{
+ int ret = 0;
+
+ if (chn == tas_priv->index) {
+ struct regmap *map = tas_priv->regmap;
+
+ ret = tasdevice_spi_change_chn_book(tas_priv, chn,
+ TASDEVICE_BOOK_ID(reg));
+ if (ret < 0)
+ goto out;
+
+ ret = regmap_write(map, TASDEVICE_PGRG(reg),
+ value);
+ if (ret < 0)
+ dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
+ }
+
+out:
+ return ret;
+}
+EXPORT_SYMBOL_GPL(tasdevice_spi_dev_write);
+
+int tasdevice_spi_dev_bulk_write(
+ struct tasdevice_priv *tas_priv, unsigned short chn,
+ unsigned int reg, unsigned char *data, unsigned int len)
+{
+ int ret = 0;
+
+ if (chn == tas_priv->index) {
+ struct regmap *map = tas_priv->regmap;
+
+ ret = tasdevice_spi_change_chn_book(tas_priv, chn,
+ TASDEVICE_BOOK_ID(reg));
+ if (ret < 0)
+ goto out;
+
+ ret = regmap_bulk_write(map, TASDEVICE_PGRG(reg),
+ data, len);
+ if (ret < 0)
+ dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
+ }
+
+out:
+ return ret;
+}
+EXPORT_SYMBOL_GPL(tasdevice_spi_dev_bulk_write);
+
+int tasdevice_spi_dev_bulk_read(struct tasdevice_priv *tas_priv,
+ unsigned short chn, unsigned int reg, unsigned char *data,
+ unsigned int len)
+{
+ int ret = 0;
+
+ if (chn == tas_priv->index) {
+ struct regmap *map = tas_priv->regmap;
+
+ ret = tasdevice_spi_change_chn_book(tas_priv, chn,
+ TASDEVICE_BOOK_ID(reg));
+ if (ret < 0)
+ goto out;
+
+ ret = regmap_bulk_read(map, TASDEVICE_PGRG(reg), data, len);
+ if (ret < 0)
+ dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
+ }
+out:
+ return ret;
+}
+EXPORT_SYMBOL_GPL(tasdevice_spi_dev_bulk_read);
+
+int tasdevice_spi_dev_update_bits(
+ struct tasdevice_priv *tas_priv, unsigned short chn,
+ unsigned int reg, unsigned int mask, unsigned int value)
+{
+ int ret = 0;
+
+ if (chn == tas_priv->index) {
+ struct regmap *map = tas_priv->regmap;
+
+ ret = tasdevice_spi_change_chn_book(tas_priv, chn,
+ TASDEVICE_BOOK_ID(reg));
+ if (ret < 0)
+ goto out;
+
+ ret = regmap_update_bits(map, TASDEVICE_PGRG(reg),
+ mask, value);
+ if (ret < 0)
+ dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
+ }
+
+out:
+ return ret;
+}
+EXPORT_SYMBOL_GPL(tasdevice_spi_dev_update_bits);
+
+static void tas2781_spi_reset(struct tasdevice_priv *tas_dev)
+{
+ int ret;
+
+ if (tas_dev->reset) {
+ gpiod_set_value_cansleep(tas_dev->reset, 0);
+ usleep_range(500, 1000);
+ gpiod_set_value_cansleep(tas_dev->reset, 1);
+ } else {
+ ret = tasdevice_spi_dev_write(tas_dev, tas_dev->index,
+ TAS2781_REG_SWRESET, TAS2781_REG_SWRESET_RESET);
+ if (ret < 0)
+ dev_err(tas_dev->dev, "dev swreset fail, %d\n", ret);
+ }
+ usleep_range(1000, 1050);
+}
+
+static int tasdevice_spi_init(struct tasdevice_priv *tas_priv)
+{
+ tas_priv->cur_prog = -1;
+ tas_priv->cur_conf = -1;
+
+ tas_priv->tasdevice.cur_book = -1;
+ tas_priv->tasdevice.cur_prog = -1;
+ tas_priv->tasdevice.cur_conf = -1;
+
+ mutex_init(&tas_priv->codec_lock);
+
+ return 0;
+}
+
+static int tasdevice_clamp(int val, int max, unsigned int invert)
+{
+ if (val > max)
+ val = max;
+ if (invert)
+ val = max - val;
+ if (val < 0)
+ val = 0;
+ return val;
+}
+
+static int tasdevice_spi_amp_putvol(struct tasdevice_priv *tas_priv,
+ struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc)
+{
+ unsigned int invert = mc->invert;
+ unsigned char mask;
+ int max = mc->max;
+ int val, ret;
+
+ mask = (1 << fls(max)) - 1;
+ mask <<= mc->shift;
+ val = tasdevice_clamp(ucontrol->value.integer.value[0], max, invert);
+ ret = tasdevice_spi_dev_update_bits(tas_priv, tas_priv->index,
+ mc->reg, mask, (unsigned int)(val << mc->shift));
+ if (ret)
+ dev_err(tas_priv->dev, "set AMP vol error in dev %d\n",
+ tas_priv->ndev);
+
+ return ret;
+}
+
+static int tasdevice_spi_amp_getvol(struct tasdevice_priv *tas_priv,
+ struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc)
+{
+ unsigned int invert = mc->invert;
+ unsigned char mask = 0;
+ int max = mc->max;
+ int ret, val;
+
+ /* Read the primary device */
+ ret = tasdevice_spi_dev_read(tas_priv, tas_priv->index, mc->reg, &val);
+ if (ret) {
+ dev_err(tas_priv->dev, "%s, get AMP vol error\n", __func__);
+ goto out;
+ }
+
+ mask = (1 << fls(max)) - 1;
+ mask <<= mc->shift;
+ val = (val & mask) >> mc->shift;
+ val = tasdevice_clamp(val, max, invert);
+ ucontrol->value.integer.value[0] = val;
+
+out:
+ return ret;
+
+}
+
+static int tasdevice_spi_digital_putvol(struct tasdevice_priv *tas_priv,
+ struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc)
+{
+ unsigned int invert = mc->invert;
+ int max = mc->max;
+ int val, ret;
+
+ val = tasdevice_clamp(ucontrol->value.integer.value[0], max, invert);
+
+ ret = tasdevice_spi_dev_write(tas_priv, tas_priv->index, mc->reg,
+ (unsigned int)val);
+ if (ret)
+ dev_err(tas_priv->dev, "set digital vol err in dev %d\n",
+ tas_priv->ndev);
+
+ return ret;
+
+}
+
+static int tasdevice_spi_digital_getvol(struct tasdevice_priv *tas_priv,
+ struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc)
+{
+ unsigned int invert = mc->invert;
+ int max = mc->max;
+ int ret, val;
+
+ /* Read the primary device as the whole */
+ ret = tasdevice_spi_dev_read(tas_priv, tas_priv->index, mc->reg, &val);
+ if (ret) {
+ dev_err(tas_priv->dev, "%s, get digital vol error\n",
+ __func__);
+ goto out;
+ }
+
+ val = tasdevice_clamp(val, max, invert);
+ ucontrol->value.integer.value[0] = val;
+
+out:
+ return ret;
+
+}
+
+static int tas2781_read_acpi(struct tas2781_hda *tas_hda, const char *hid,
+ int id)
+{
+ struct tasdevice_priv *p = tas_hda->priv;
+ struct acpi_device *adev;
+ struct device *physdev;
+ u32 values[HDA_MAX_COMPONENTS];
+ const char *sub, *property;
+ size_t nval;
+ int ret, i;
+
+ /*
+ * ACPI_COMPANION isn't available when this driver was instantiated by
+ * the serial-multi-instantiate driver, so lookup the node by HID
+ */
+ if (!ACPI_COMPANION(p->dev)) {
+ adev = acpi_dev_get_first_match_dev(hid, NULL, -1);
+ if (!adev) {
+ dev_err(p->dev,
+ "Failed to find an ACPI device for %s\n",
+ dev_name(p->dev));
+ return -ENODEV;
+ }
+ ACPI_COMPANION_SET(p->dev, adev);
+ }
+ adev = acpi_dev_get_first_match_dev(hid, NULL, -1);
+ if (!adev) {
+ dev_err(p->dev,
+ "Failed to find an ACPI device for %s\n", hid);
+ return -ENODEV;
+ }
+
+ strscpy(p->dev_name, hid, sizeof(p->dev_name));
+ physdev = get_device(acpi_get_first_physical_node(adev));
+ acpi_dev_put(adev);
+
+ /* No side-effect to the playback even if subsystem_id is NULL*/
+ sub = acpi_get_subsystem_id(ACPI_HANDLE(physdev));
+ if (IS_ERR(sub))
+ sub = NULL;
+
+ p->acpi_subsystem_id = sub;
+
+ put_device(physdev);
+
+ property = "ti,dev-index";
+ ret = device_property_count_u32(p->dev, property);
+ if (ret <= 0)
+ goto err;
+
+ if (ret > ARRAY_SIZE(values)) {
+ ret = -EINVAL;
+ goto err;
+ }
+ nval = ret;
+
+ ret = device_property_read_u32_array(p->dev, property, values, nval);
+ if (ret)
+ goto err;
+
+ p->index = 0xFF;
+ for (i = 0; i < nval; i++) {
+ if (values[i] == id) {
+ p->index = i;
+ break;
+ }
+ }
+ /*
+ * It's not an error for the ID to be missing: for I2C there can be
+ * an alias address that is not a real device. So reject silently.
+ */
+ if (p->ndev == 0xFF) {
+ dev_dbg(p->dev, "No index found in %s\n", property);
+ ret = -ENODEV;
+ goto err;
+ }
+
+ p->reset = devm_gpiod_get_index_optional(p->dev,
+ "reset", p->ndev, GPIOD_OUT_LOW);
+ if (IS_ERR(p->reset)) {
+ ret = PTR_ERR(p->reset);
+
+ /*
+ * If RESET is shared the first amp to probe will grab the
+ * reset line and reset all the amps
+ */
+ if (ret != -EBUSY)
+ return dev_err_probe(p->dev, ret,
+ "Failed to get reset GPIO\n");
+
+ dev_info(p->dev, "Reset GPIO busy, assume shared reset\n");
+ p->reset = NULL;
+ }
+
+ return 0;
+
+err:
+ dev_err(p->dev, "read acpi error, ret: %d\n", ret);
+ acpi_dev_put(adev);
+
+ return ret;
+}
+
+static void tas2781_hda_playback_hook(struct device *dev, int action)
+{
+ struct tas2781_hda *tas_hda = dev_get_drvdata(dev);
+
+ dev_dbg(tas_hda->dev, "%s: action = %d\n", __func__, action);
+ switch (action) {
+ case HDA_GEN_PCM_ACT_OPEN:
+ pm_runtime_get_sync(dev);
+ mutex_lock(&tas_hda->priv->codec_lock);
+ tasdevice_tuning_switch(tas_hda->priv, 0);
+ mutex_unlock(&tas_hda->priv->codec_lock);
+ break;
+ case HDA_GEN_PCM_ACT_CLOSE:
+ mutex_lock(&tas_hda->priv->codec_lock);
+ tasdevice_tuning_switch(tas_hda->priv, 1);
+ mutex_unlock(&tas_hda->priv->codec_lock);
+
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
+ break;
+ default:
+ dev_dbg(tas_hda->dev, "Playback action not supported: %d\n",
+ action);
+ break;
+ }
+}
+
+static int tasdevice_info_profile(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = tas_priv->rcabin.ncfgs - 1;
+
+ return 0;
+}
+
+static int tasdevice_get_profile_id(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+
+ ucontrol->value.integer.value[0] = tas_priv->rcabin.profile_cfg_id;
+
+ return 0;
+}
+
+static int tasdevice_set_profile_id(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+ int nr_profile = ucontrol->value.integer.value[0];
+ int max = tas_priv->rcabin.ncfgs - 1;
+ int val, ret = 0;
+
+ val = clamp(nr_profile, 0, max);
+
+ if (tas_priv->rcabin.profile_cfg_id != val) {
+ tas_priv->rcabin.profile_cfg_id = val;
+ ret = 1;
+ }
+
+ return ret;
+}
+
+static int tasdevice_info_programs(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+ struct tasdevice_fw *tas_fw = tas_priv->fmw;
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = tas_fw->nr_programs - 1;
+
+ return 0;
+}
+
+static int tasdevice_info_config(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+ struct tasdevice_fw *tas_fw = tas_priv->fmw;
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = tas_fw->nr_configurations - 1;
+
+ return 0;
+}
+
+static int tasdevice_program_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+
+ ucontrol->value.integer.value[0] = tas_priv->cur_prog;
+
+ return 0;
+}
+
+static int tasdevice_program_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+ struct tasdevice_fw *tas_fw = tas_priv->fmw;
+ int nr_program = ucontrol->value.integer.value[0];
+ int max = tas_fw->nr_programs - 1;
+ int val, ret = 0;
+
+ val = clamp(nr_program, 0, max);
+
+ if (tas_priv->cur_prog != val) {
+ tas_priv->cur_prog = val;
+ ret = 1;
+ }
+
+ return ret;
+}
+
+static int tasdevice_config_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+
+ ucontrol->value.integer.value[0] = tas_priv->cur_conf;
+
+ return 0;
+}
+
+static int tasdevice_config_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+ struct tasdevice_fw *tas_fw = tas_priv->fmw;
+ int nr_config = ucontrol->value.integer.value[0];
+ int max = tas_fw->nr_configurations - 1;
+ int val, ret = 0;
+
+ val = clamp(nr_config, 0, max);
+
+ if (tas_priv->cur_conf != val) {
+ tas_priv->cur_conf = val;
+ ret = 1;
+ }
+
+ return ret;
+}
+
+/*
+ * tas2781_digital_getvol - get the volum control
+ * @kcontrol: control pointer
+ * @ucontrol: User data
+ * Customer Kcontrol for tas2781 is primarily for regmap booking, paging
+ * depends on internal regmap mechanism.
+ * tas2781 contains book and page two-level register map, especially
+ * book switching will set the register BXXP00R7F, after switching to the
+ * correct book, then leverage the mechanism for paging to access the
+ * register.
+ */
+static int tas2781_digital_getvol(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+
+ return tasdevice_spi_digital_getvol(tas_priv, ucontrol, mc);
+}
+
+static int tas2781_amp_getvol(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+
+ return tasdevice_spi_amp_getvol(tas_priv, ucontrol, mc);
+}
+
+static int tas2781_digital_putvol(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+
+ /* The check of the given value is in tasdevice_digital_putvol. */
+ return tasdevice_spi_digital_putvol(tas_priv, ucontrol, mc);
+}
+
+static int tas2781_amp_putvol(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+
+ /* The check of the given value is in tasdevice_amp_putvol. */
+ return tasdevice_spi_amp_putvol(tas_priv, ucontrol, mc);
+}
+
+static int tas2781_force_fwload_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+
+ ucontrol->value.integer.value[0] = (int)tas_priv->force_fwload_status;
+ dev_dbg(tas_priv->dev, "%s : Force FWload %s\n", __func__,
+ tas_priv->force_fwload_status ? "ON" : "OFF");
+
+ return 0;
+}
+
+static int tas2781_force_fwload_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct tasdevice_priv *tas_priv = snd_kcontrol_chip(kcontrol);
+ bool change, val = (bool)ucontrol->value.integer.value[0];
+
+ if (tas_priv->force_fwload_status == val)
+ change = false;
+ else {
+ change = true;
+ tas_priv->force_fwload_status = val;
+ }
+ dev_dbg(tas_priv->dev, "%s : Force FWload %s\n", __func__,
+ tas_priv->force_fwload_status ? "ON" : "OFF");
+
+ return change;
+}
+
+static const struct snd_kcontrol_new tas2781_snd_controls[] = {
+ ACARD_SINGLE_RANGE_EXT_TLV("Speaker Analog Gain", TAS2781_AMP_LEVEL,
+ 1, 0, 20, 0, tas2781_amp_getvol,
+ tas2781_amp_putvol, amp_vol_tlv),
+ ACARD_SINGLE_RANGE_EXT_TLV("Speaker Digital Gain", TAS2781_DVC_LVL,
+ 0, 0, 200, 1, tas2781_digital_getvol,
+ tas2781_digital_putvol, dvc_tlv),
+ ACARD_SINGLE_BOOL_EXT("Speaker Force Firmware Load", 0,
+ tas2781_force_fwload_get, tas2781_force_fwload_put),
+};
+
+static const struct snd_kcontrol_new tas2781_prof_ctrl = {
+ .name = "Speaker Profile Id",
+ .iface = SNDRV_CTL_ELEM_IFACE_CARD,
+ .info = tasdevice_info_profile,
+ .get = tasdevice_get_profile_id,
+ .put = tasdevice_set_profile_id,
+};
+
+static const struct snd_kcontrol_new tas2781_dsp_prog_ctrl = {
+ .name = "Speaker Program Id",
+ .iface = SNDRV_CTL_ELEM_IFACE_CARD,
+ .info = tasdevice_info_programs,
+ .get = tasdevice_program_get,
+ .put = tasdevice_program_put,
+};
+
+static const struct snd_kcontrol_new tas2781_dsp_conf_ctrl = {
+ .name = "Speaker Config Id",
+ .iface = SNDRV_CTL_ELEM_IFACE_CARD,
+ .info = tasdevice_info_config,
+ .get = tasdevice_config_get,
+ .put = tasdevice_config_put,
+};
+
+static void tas2781_apply_calib(struct tasdevice_priv *tas_priv)
+{
+ static const unsigned char page_array[CALIB_MAX] = {
+ 0x17, 0x18, 0x18, 0x13, 0x18
+ };
+ static const unsigned char rgno_array[CALIB_MAX] = {
+ 0x74, 0x0c, 0x14, 0x70, 0x7c
+ };
+ unsigned char *data;
+ int j, rc;
+
+ data = tas_priv->cali_data.data +
+ tas_priv->ndev * TASDEVICE_SPEAKER_CALIBRATION_SIZE;
+ for (j = 0; j < CALIB_MAX; j++) {
+ rc = tasdevice_spi_dev_bulk_write(tas_priv, tas_priv->index,
+ TASDEVICE_REG(0, page_array[j], rgno_array[j]),
+ &(data[4 * j]), 4);
+ if (rc < 0)
+ dev_err(tas_priv->dev,
+ "chn %d calib %d bulk_wr err = %d\n",
+ tas_priv->ndev, j, rc);
+ }
+
+}
+
+/* Update the calibration data, including speaker impedance, f0, etc,
+ * into algo. Calibrate data is done by manufacturer in the factory.
+ * These data are used by Algo for calculating the speaker temperature,
+ * speaker membrane excursion and f0 in real time during playback.
+ * Calibration data format in EFI is V2, since 2024.
+ */
+static int tas2781_save_calibration(struct tasdevice_priv *tas_priv)
+{
+ efi_guid_t efi_guid = EFI_GUID(0x02f9af02, 0x7734, 0x4233, 0xb4, 0x3d,
+ 0x93, 0xfe, 0x5a, 0xa3, 0x5d, 0xb3);
+ static efi_char16_t efi_name[] = L"CALI_DATA";
+ struct tm *tm = &tas_priv->tm;
+ unsigned int attr, crc;
+ unsigned int *tmp_val;
+ efi_status_t status;
+
+ tas_priv->cali_data.total_sz = 0;
+ /* Get real size of UEFI variable */
+ status = efi.get_variable(efi_name, &efi_guid, &attr,
+ &tas_priv->cali_data.total_sz, tas_priv->cali_data.data);
+ if (status == EFI_BUFFER_TOO_SMALL) {
+ /* Allocate data buffer of data_size bytes */
+ tas_priv->cali_data.data = devm_kzalloc(tas_priv->dev,
+ tas_priv->cali_data.total_sz, GFP_KERNEL);
+ if (!tas_priv->cali_data.data)
+ return -ENOMEM;
+ /* Get variable contents into buffer */
+ status = efi.get_variable(efi_name, &efi_guid, &attr,
+ &tas_priv->cali_data.total_sz,
+ tas_priv->cali_data.data);
+ }
+ if (status != EFI_SUCCESS)
+ return -EINVAL;
+
+ tmp_val = (unsigned int *)tas_priv->cali_data.data;
+ if (tmp_val[0] == 2781) {
+ /* Calibration data is in V2 format.
+ * struct cali_data {
+ * short link_id;
+ * short unique_id;
+ * char cali_data[20];
+ *}
+ *
+ * struct {
+ * int ChipID;
+ * int Device-Sum (4 bytes)
+ * int TimeStamp of Calibration (4 bytes)
+ *
+ * struct cali_data cali_data[Device-Sum];
+ * int CRC (4 bytes)
+ * } ueft;
+ */
+ crc = crc32(~0, tas_priv->cali_data.data,
+ 3 + tmp_val[0] * 6) ^ ~0;
+ dev_dbg(tas_priv->dev, "cali crc 0x%08x PK tmp_val 0x%08x\n",
+ crc, tmp_val[3+tmp_val[0]*6]);
+
+ if (crc == tmp_val[3+tmp_val[0]*6]) {
+ time64_to_tm(tmp_val[2], 0, tm);
+ dev_dbg(tas_priv->dev, "%4ld-%2d-%2d, %2d:%2d:%2d\n",
+ tm->tm_year, tm->tm_mon, tm->tm_mday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+ tasdevice_apply_calibration(tas_priv);
+ } else {
+ tas_priv->cali_data.total_sz = 0;
+ }
+ } else {
+ /* Calibration data is in V1 format.
+ * struct cali_data {
+ * char cali_data[20];
+ * }
+ *
+ * struct {
+ * struct cali_data cali_data[4];
+ * int TimeStamp of Calibration (4 bytes)
+ * int CRC (4 bytes)
+ * } ueft;
+ */
+ crc = crc32(~0, tas_priv->cali_data.data, 84) ^ ~0;
+ dev_dbg(tas_priv->dev, "cali crc 0x%08x PK tmp_val 0x%08x\n",
+ crc, tmp_val[21]);
+
+ if (crc == tmp_val[21]) {
+ time64_to_tm(tmp_val[20], 0, tm);
+ dev_dbg(tas_priv->dev, "%4ld-%2d-%2d, %2d:%2d:%2d\n",
+ tm->tm_year, tm->tm_mon, tm->tm_mday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+ tasdevice_apply_calibration(tas_priv);
+ } else
+ tas_priv->cali_data.total_sz = 0;
+ }
+ return 0;
+}
+
+static void tas2781_hda_remove_controls(struct tas2781_hda *tas_hda)
+{
+ struct hda_codec *codec = tas_hda->priv->codec;
+
+ if (tas_hda->dsp_prog_ctl)
+ snd_ctl_remove(codec->card, tas_hda->dsp_prog_ctl);
+
+ if (tas_hda->dsp_conf_ctl)
+ snd_ctl_remove(codec->card, tas_hda->dsp_conf_ctl);
+
+ for (int i = ARRAY_SIZE(tas_hda->snd_ctls) - 1; i >= 0; i--)
+ if (tas_hda->snd_ctls[i])
+ snd_ctl_remove(codec->card, tas_hda->snd_ctls[i]);
+
+ if (tas_hda->prof_ctl)
+ snd_ctl_remove(codec->card, tas_hda->prof_ctl);
+}
+
+static void tasdev_fw_ready(const struct firmware *fmw, void *context)
+{
+ struct tasdevice_priv *tas_priv = context;
+ struct tas2781_hda *tas_hda = dev_get_drvdata(tas_priv->dev);
+ struct hda_codec *codec = tas_priv->codec;
+ int i, ret;
+
+ pm_runtime_get_sync(tas_priv->dev);
+ mutex_lock(&tas_priv->codec_lock);
+
+ ret = tasdevice_spi_rca_parser(tas_priv, fmw);
+ if (ret)
+ goto out;
+
+ tas_hda->prof_ctl = snd_ctl_new1(&tas2781_prof_ctrl, tas_priv);
+ ret = snd_ctl_add(codec->card, tas_hda->prof_ctl);
+ if (ret) {
+ dev_err(tas_priv->dev,
+ "Failed to add KControl %s = %d\n",
+ tas2781_prof_ctrl.name, ret);
+ goto out;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(tas2781_snd_controls); i++) {
+ tas_hda->snd_ctls[i] = snd_ctl_new1(&tas2781_snd_controls[i],
+ tas_priv);
+ ret = snd_ctl_add(codec->card, tas_hda->snd_ctls[i]);
+ if (ret) {
+ dev_err(tas_priv->dev,
+ "Failed to add KControl %s = %d\n",
+ tas2781_snd_controls[i].name, ret);
+ goto out;
+ }
+ }
+
+ tasdevice_dsp_remove(tas_priv);
+
+ tas_priv->fw_state = TASDEVICE_DSP_FW_PENDING;
+ scnprintf(tas_priv->coef_binaryname, 64, "TAS2XXX%04X-%01d.bin",
+ codec->core.subsystem_id & 0xffff, tas_priv->index);
+ dev_info(tas_priv->dev, "Binary %s.\n", tas_priv->coef_binaryname);
+ ret = tasdevice_dsp_parser(tas_priv);
+ if (ret) {
+ dev_err(tas_priv->dev, "dspfw load %s error\n",
+ tas_priv->coef_binaryname);
+ tas_priv->fw_state = TASDEVICE_DSP_FW_FAIL;
+ goto out;
+ }
+
+ tas_hda->dsp_prog_ctl = snd_ctl_new1(&tas2781_dsp_prog_ctrl,
+ tas_priv);
+ ret = snd_ctl_add(codec->card, tas_hda->dsp_prog_ctl);
+ if (ret) {
+ dev_err(tas_priv->dev,
+ "Failed to add KControl %s = %d\n",
+ tas2781_dsp_prog_ctrl.name, ret);
+ goto out;
+ }
+
+ tas_hda->dsp_conf_ctl = snd_ctl_new1(&tas2781_dsp_conf_ctrl,
+ tas_priv);
+ ret = snd_ctl_add(codec->card, tas_hda->dsp_conf_ctl);
+ if (ret) {
+ dev_err(tas_priv->dev,
+ "Failed to add KControl %s = %d\n",
+ tas2781_dsp_conf_ctrl.name, ret);
+ goto out;
+ }
+
+ tas_priv->fw_state = TASDEVICE_DSP_FW_ALL_OK;
+ tasdevice_prmg_load(tas_priv, 0);
+ if (tas_priv->fmw->nr_programs > 0)
+ tas_priv->cur_prog = 0;
+ if (tas_priv->fmw->nr_configurations > 0)
+ tas_priv->cur_conf = 0;
+
+ /* If calibrated data occurs error, dsp will still works with default
+ * calibrated data inside algo.
+ */
+ tasdevice_save_calibration(tas_priv);
+
+ tasdevice_tuning_switch(tas_hda->priv, 0);
+
+out:
+ mutex_unlock(&tas_hda->priv->codec_lock);
+ if (fmw)
+ release_firmware(fmw);
+ pm_runtime_mark_last_busy(tas_hda->dev);
+ pm_runtime_put_autosuspend(tas_hda->dev);
+}
+
+static int tas2781_hda_bind(struct device *dev, struct device *master,
+ void *master_data)
+{
+ struct tas2781_hda *tas_hda = dev_get_drvdata(dev);
+ struct hda_component *comps = master_data;
+ struct hda_codec *codec;
+ unsigned int subid;
+ int ret;
+
+ if (!comps || tas_hda->priv->index < 0 ||
+ tas_hda->priv->index >= HDA_MAX_COMPONENTS)
+ return -EINVAL;
+
+ comps = &comps[tas_hda->priv->index];
+ if (comps->dev)
+ return -EBUSY;
+
+ codec = comps->codec;
+ subid = codec->core.subsystem_id >> 16;
+
+ switch (subid) {
+ case 0x103C:
+ tas_hda->priv->catlog_id = HP;
+ break;
+ default:
+ tas_hda->priv->catlog_id = OTHERS;
+ break;
+ }
+
+ pm_runtime_get_sync(dev);
+
+ comps->dev = dev;
+
+ strscpy(comps->name, dev_name(dev), sizeof(comps->name));
+
+ dev_info(dev, "Bind %d.%d.\n", subid, (int)tas_hda->priv->catlog_id);
+ ret = tascodec_init(tas_hda->priv, codec, THIS_MODULE,
+ tasdev_fw_ready);
+ if (!ret)
+ comps->playback_hook = tas2781_hda_playback_hook;
+
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
+
+ return ret;
+}
+
+static void tas2781_hda_unbind(struct device *dev,
+ struct device *master, void *master_data)
+{
+ struct tas2781_hda *tas_hda = dev_get_drvdata(dev);
+ struct hda_component *comps = master_data;
+
+ comps = &comps[tas_hda->priv->index];
+
+ if (comps->dev == dev) {
+ comps->dev = NULL;
+ memset(comps->name, 0, sizeof(comps->name));
+ comps->playback_hook = NULL;
+ }
+
+ tas2781_hda_remove_controls(tas_hda);
+
+ tasdevice_config_info_remove(tas_hda->priv);
+ tasdevice_dsp_remove(tas_hda->priv);
+
+ tas_hda->priv->fw_state = TASDEVICE_DSP_FW_PENDING;
+}
+
+static const struct component_ops tas2781_hda_comp_ops = {
+ .bind = tas2781_hda_bind,
+ .unbind = tas2781_hda_unbind,
+};
+
+static void tas2781_hda_remove(struct device *dev)
+{
+ struct tas2781_hda *tas_hda = dev_get_drvdata(dev);
+
+ pm_runtime_get_sync(tas_hda->dev);
+ pm_runtime_disable(tas_hda->dev);
+
+ component_del(tas_hda->dev, &tas2781_hda_comp_ops);
+
+ pm_runtime_put_noidle(tas_hda->dev);
+
+ tasdevice_remove(tas_hda->priv);
+}
+
+static int tas2781_hda_spi_probe(struct spi_device *spi)
+{
+ struct tas2781_hda *tas_hda;
+ struct tasdevice_priv *tas_priv;
+ const char *device_name;
+ int ret;
+
+ tas_hda = devm_kzalloc(&spi->dev, sizeof(*tas_hda), GFP_KERNEL);
+ if (!tas_hda)
+ return -ENOMEM;
+
+ dev_set_drvdata(&spi->dev, tas_hda);
+ tas_hda->dev = &spi->dev;
+
+ tas_priv = devm_kzalloc(&spi->dev, sizeof(*tas_priv), GFP_KERNEL);
+ if (!tas_priv)
+ return -ENOMEM;
+ tas_priv->dev = &spi->dev;
+ tas_priv->client = (void *)spi;
+ tas_hda->priv = tas_priv;
+
+ if (strstr(dev_name(&spi->dev), "TXNW2781")) {
+ device_name = "TXNW2781";
+ tas_hda->priv->save_calibration = tas2781_save_calibration;
+ tas_hda->priv->apply_calibration = tas2781_apply_calib;
+ } else
+ return -ENODEV;
+
+ tas_hda->priv->irq_info.irq = spi->irq;
+ ret = tas2781_read_acpi(tas_hda, device_name,
+ spi_get_chipselect(spi, 0));
+ if (ret)
+ return dev_err_probe(tas_hda->dev, ret,
+ "Platform not supported\n");
+
+ tas_hda->priv->regmap = devm_regmap_init_spi(spi, &tasdevice_regmap);
+ if (IS_ERR(tas_hda->priv->regmap)) {
+ ret = PTR_ERR(tas_hda->priv->regmap);
+ dev_err(tas_priv->dev, "Failed to allocate regmap: %d\n",
+ ret);
+ goto err;
+ }
+ ret = tasdevice_spi_init(tas_hda->priv);
+ if (ret)
+ goto err;
+
+ pm_runtime_set_autosuspend_delay(tas_hda->dev, 3000);
+ pm_runtime_use_autosuspend(tas_hda->dev);
+ pm_runtime_mark_last_busy(tas_hda->dev);
+ pm_runtime_set_active(tas_hda->dev);
+ pm_runtime_get_noresume(tas_hda->dev);
+ pm_runtime_enable(tas_hda->dev);
+
+ pm_runtime_put_autosuspend(tas_hda->dev);
+
+ tas2781_spi_reset(tas_hda->priv);
+
+ ret = component_add(tas_hda->dev, &tas2781_hda_comp_ops);
+ if (ret) {
+ dev_err(tas_hda->dev, "Register component failed: %d\n", ret);
+ pm_runtime_disable(tas_hda->dev);
+ }
+
+err:
+ if (ret)
+ tas2781_hda_remove(&spi->dev);
+ return ret;
+}
+
+static void tas2781_hda_spi_remove(struct spi_device *spi)
+{
+ tas2781_hda_remove(&spi->dev);
+}
+
+static int tas2781_runtime_suspend(struct device *dev)
+{
+ struct tas2781_hda *tas_hda = dev_get_drvdata(dev);
+
+ dev_dbg(tas_hda->dev, "Runtime Suspend\n");
+
+ mutex_lock(&tas_hda->priv->codec_lock);
+
+ if (tas_hda->priv->playback_started) {
+ tasdevice_tuning_switch(tas_hda->priv, 1);
+ tas_hda->priv->playback_started = false;
+ }
+
+ tas_hda->priv->tasdevice.cur_book = -1;
+ tas_hda->priv->tasdevice.cur_prog = -1;
+ tas_hda->priv->tasdevice.cur_conf = -1;
+
+ mutex_unlock(&tas_hda->priv->codec_lock);
+
+ return 0;
+}
+
+static int tas2781_runtime_resume(struct device *dev)
+{
+ struct tas2781_hda *tas_hda = dev_get_drvdata(dev);
+
+ dev_dbg(tas_hda->dev, "Runtime Resume\n");
+
+ mutex_lock(&tas_hda->priv->codec_lock);
+
+ tasdevice_prmg_load(tas_hda->priv, tas_hda->priv->cur_prog);
+
+ /* If calibrated data occurs error, dsp will still works with default
+ * calibrated data inside algo.
+ */
+ tasdevice_apply_calibration(tas_hda->priv);
+
+ mutex_unlock(&tas_hda->priv->codec_lock);
+
+ return 0;
+}
+
+static int tas2781_system_suspend(struct device *dev)
+{
+ struct tas2781_hda *tas_hda = dev_get_drvdata(dev);
+ int ret;
+
+ dev_dbg(tas_hda->priv->dev, "System Suspend\n");
+
+ ret = pm_runtime_force_suspend(dev);
+ if (ret)
+ return ret;
+
+ /* Shutdown chip before system suspend */
+ tasdevice_tuning_switch(tas_hda->priv, 1);
+
+ /*
+ * Reset GPIO may be shared, so cannot reset here.
+ * However beyond this point, amps may be powered down.
+ */
+ return 0;
+}
+
+static int tas2781_system_resume(struct device *dev)
+{
+ struct tas2781_hda *tas_hda = dev_get_drvdata(dev);
+ int ret;
+
+ dev_info(tas_hda->priv->dev, "System Resume\n");
+
+ ret = pm_runtime_force_resume(dev);
+ if (ret)
+ return ret;
+
+ mutex_lock(&tas_hda->priv->codec_lock);
+
+ tas_hda->priv->tasdevice.cur_book = -1;
+ tas_hda->priv->tasdevice.cur_prog = -1;
+ tas_hda->priv->tasdevice.cur_conf = -1;
+
+ tas2781_spi_reset(tas_hda->priv);
+ tasdevice_prmg_load(tas_hda->priv, tas_hda->priv->cur_prog);
+
+ /* If calibrated data occurs error, dsp will still work with default
+ * calibrated data inside algo.
+ */
+ tasdevice_apply_calibration(tas_hda->priv);
+ mutex_unlock(&tas_hda->priv->codec_lock);
+
+ return 0;
+}
+
+static const struct dev_pm_ops tas2781_hda_pm_ops = {
+ RUNTIME_PM_OPS(tas2781_runtime_suspend, tas2781_runtime_resume, NULL)
+ SYSTEM_SLEEP_PM_OPS(tas2781_system_suspend, tas2781_system_resume)
+};
+
+static const struct spi_device_id tas2781_hda_spi_id[] = {
+ { "tas2781-hda", 0 },
+ {}
+};
+
+static const struct acpi_device_id tas2781_acpi_hda_match[] = {
+ {"TXNW2781", 0 },
+ {}
+};
+MODULE_DEVICE_TABLE(acpi, tas2781_acpi_hda_match);
+
+static struct spi_driver tas2781_hda_spi_driver = {
+ .driver = {
+ .name = "tas2781-hda",
+ .acpi_match_table = tas2781_acpi_hda_match,
+ .pm = &tas2781_hda_pm_ops,
+ },
+ .id_table = tas2781_hda_spi_id,
+ .probe = tas2781_hda_spi_probe,
+ .remove = tas2781_hda_spi_remove,
+};
+module_spi_driver(tas2781_hda_spi_driver);
+
+MODULE_DESCRIPTION("TAS2781 HDA Driver");
+MODULE_AUTHOR("Baojun Xu, TI, <baojun.xu@...com>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(SND_SOC_TAS2781_FMWLIB);
--
2.40.1
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