[PATCH v1] ALSA: hda/tas2781: Update tas2781 hda SPI driver

[Baojun Xu <baojun.xu@xxxxxx>]

Because firmware issue of platform, found spi device is not stable,
so add status check before firmware download, and remove some
operations which is not must in current stage.

Signed-off-by: Baojun Xu <baojun.xu@xxxxxx>
---
 sound/pci/hda/tas2781_hda_spi.c | 27 ++++++++++++++-------------
 1 file changed, 14 insertions(+), 13 deletions(-)

diff --git a/sound/pci/hda/tas2781_hda_spi.c b/sound/pci/hda/tas2781_hda_spi.c
index d91b19602485..00676cbb2c8e 100644
--- a/sound/pci/hda/tas2781_hda_spi.c
+++ b/sound/pci/hda/tas2781_hda_spi.c
@@ -909,7 +909,7 @@ 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, j, ret;
+	int i, j, ret, val;
 
 	pm_runtime_get_sync(tas_priv->dev);
 	guard(mutex)(&tas_priv->codec_lock);
@@ -978,13 +978,16 @@ static void tasdev_fw_ready(const struct firmware *fmw, void *context)
 
 	/* Perform AMP reset before firmware download. */
 	tas_priv->rcabin.profile_cfg_id = TAS2781_PRE_POST_RESET_CFG;
-	tasdevice_spi_tuning_switch(tas_priv, 0);
 	tas2781_spi_reset(tas_priv);
 	tas_priv->rcabin.profile_cfg_id = 0;
-	tasdevice_spi_tuning_switch(tas_priv, 1);
 
 	tas_priv->fw_state = TASDEVICE_DSP_FW_ALL_OK;
-	ret = tasdevice_spi_prmg_load(tas_priv, 0);
+	ret = tasdevice_spi_dev_read(tas_priv, TAS2781_REG_CLK_CONFIG, &val);
+	if (ret < 0)
+		goto out;
+
+	if (val == TAS2781_REG_CLK_CONFIG_RESET)
+		ret = tasdevice_spi_prmg_load(tas_priv, 0);
 	if (ret < 0) {
 		dev_err(tas_priv->dev, "FW download failed = %d\n", ret);
 		goto out;
@@ -998,7 +1001,6 @@ static void tasdev_fw_ready(const struct firmware *fmw, void *context)
 	 * If calibrated data occurs error, dsp will still works with default
 	 * calibrated data inside algo.
 	 */
-	tas_priv->save_calibration(tas_priv);
 
 out:
 	if (fmw)
@@ -1157,7 +1159,8 @@ static int tas2781_runtime_suspend(struct device *dev)
 
 	guard(mutex)(&tas_hda->priv->codec_lock);
 
-	tasdevice_spi_tuning_switch(tas_hda->priv, 1);
+	if (tas_hda->priv->playback_started)
+		tasdevice_spi_tuning_switch(tas_hda->priv, 1);
 
 	tas_hda->priv->cur_book = -1;
 	tas_hda->priv->cur_conf = -1;
@@ -1171,7 +1174,8 @@ static int tas2781_runtime_resume(struct device *dev)
 
 	guard(mutex)(&tas_hda->priv->codec_lock);
 
-	tasdevice_spi_tuning_switch(tas_hda->priv, 0);
+	if (tas_hda->priv->playback_started)
+		tasdevice_spi_tuning_switch(tas_hda->priv, 0);
 
 	return 0;
 }
@@ -1186,12 +1190,9 @@ static int tas2781_system_suspend(struct device *dev)
 		return ret;
 
 	/* Shutdown chip before system suspend */
-	tasdevice_spi_tuning_switch(tas_hda->priv, 1);
-	tas2781_spi_reset(tas_hda->priv);
-	/*
-	 * Reset GPIO may be shared, so cannot reset here.
-	 * However beyond this point, amps may be powered down.
-	 */
+	if (tas_hda->priv->playback_started)
+		tasdevice_spi_tuning_switch(tas_hda->priv, 1);
+
 	return 0;
 }
 
-- 
2.34.1