This is a note to let you know that I've just added the patch titled
ASoc: tas2781: Enable RCA-based playback without DSP firmware download
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-tas2781-enable-rca-based-playback-without-dsp-f.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9ca41361244b7c61f30dd9cd9c47f5ab924236b2
Author: Shenghao Ding <shenghao-ding@xxxxxx>
Date: Fri Jun 14 21:36:45 2024 +0800
ASoc: tas2781: Enable RCA-based playback without DSP firmware download
[ Upstream commit 9f774c757e3fb2ac32dc4377e8f21f3364a8df81 ]
In only loading RCA (Reconfigurable Architecture) binary case, no DSP
program will be working inside tas2563/tas2781, that is dsp-bypass mode,
do not support speaker protection, or audio acoustic algorithms in this
mode.
Fixes: ef3bcde75d06 ("ASoC: tas2781: Add tas2781 driver")
Signed-off-by: Shenghao Ding <shenghao-ding@xxxxxx>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Link: https://msgid.link/r/20240614133646.910-1-shenghao-ding@xxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/include/sound/tas2781-dsp.h b/include/sound/tas2781-dsp.h
index 4ef0f5c6fe6c0..af3319dab230a 100644
--- a/include/sound/tas2781-dsp.h
+++ b/include/sound/tas2781-dsp.h
@@ -112,10 +112,17 @@ struct tasdevice_fw {
struct device *dev;
};
-enum tasdevice_dsp_fw_state {
- TASDEVICE_DSP_FW_NONE = 0,
+enum tasdevice_fw_state {
+ /* Driver in startup mode, not load any firmware. */
TASDEVICE_DSP_FW_PENDING,
+ /* DSP firmware in the system, but parsing error. */
TASDEVICE_DSP_FW_FAIL,
+ /*
+ * Only RCA (Reconfigurable Architecture) firmware load
+ * successfully.
+ */
+ TASDEVICE_RCA_FW_OK,
+ /* Both RCA and DSP firmware load successfully. */
TASDEVICE_DSP_FW_ALL_OK,
};
diff --git a/sound/soc/codecs/tas2781-fmwlib.c b/sound/soc/codecs/tas2781-fmwlib.c
index c6c47297a4fe7..32ff4fb14998e 100644
--- a/sound/soc/codecs/tas2781-fmwlib.c
+++ b/sound/soc/codecs/tas2781-fmwlib.c
@@ -2354,14 +2354,21 @@ void tasdevice_tuning_switch(void *context, int state)
struct tasdevice_fw *tas_fmw = tas_priv->fmw;
int profile_cfg_id = tas_priv->rcabin.profile_cfg_id;
- if (tas_priv->fw_state == TASDEVICE_DSP_FW_FAIL) {
- dev_err(tas_priv->dev, "DSP bin file not loaded\n");
+ /*
+ * Only RCA-based Playback can still work with no dsp program running
+ * inside the chip.
+ */
+ switch (tas_priv->fw_state) {
+ case TASDEVICE_RCA_FW_OK:
+ case TASDEVICE_DSP_FW_ALL_OK:
+ break;
+ default:
return;
}
if (state == 0) {
- if (tas_priv->cur_prog < tas_fmw->nr_programs) {
- /*dsp mode or tuning mode*/
+ if (tas_fmw && tas_priv->cur_prog < tas_fmw->nr_programs) {
+ /* dsp mode or tuning mode */
profile_cfg_id = tas_priv->rcabin.profile_cfg_id;
tasdevice_select_tuningprm_cfg(tas_priv,
tas_priv->cur_prog, tas_priv->cur_conf,
@@ -2370,9 +2377,10 @@ void tasdevice_tuning_switch(void *context, int state)
tasdevice_select_cfg_blk(tas_priv, profile_cfg_id,
TASDEVICE_BIN_BLK_PRE_POWER_UP);
- } else
+ } else {
tasdevice_select_cfg_blk(tas_priv, profile_cfg_id,
TASDEVICE_BIN_BLK_PRE_SHUTDOWN);
+ }
}
EXPORT_SYMBOL_NS_GPL(tasdevice_tuning_switch,
SND_SOC_TAS2781_FMWLIB);
diff --git a/sound/soc/codecs/tas2781-i2c.c b/sound/soc/codecs/tas2781-i2c.c
index 7327e9dcc8c02..a9d179e307739 100644
--- a/sound/soc/codecs/tas2781-i2c.c
+++ b/sound/soc/codecs/tas2781-i2c.c
@@ -378,23 +378,37 @@ static void tasdevice_fw_ready(const struct firmware *fmw,
mutex_lock(&tas_priv->codec_lock);
ret = tasdevice_rca_parser(tas_priv, fmw);
- if (ret)
+ if (ret) {
+ tasdevice_config_info_remove(tas_priv);
goto out;
+ }
tasdevice_create_control(tas_priv);
tasdevice_dsp_remove(tas_priv);
tasdevice_calbin_remove(tas_priv);
- tas_priv->fw_state = TASDEVICE_DSP_FW_PENDING;
+ /*
+ * The baseline is the RCA-only case, and then the code attempts to
+ * load DSP firmware but in case of failures just keep going, i.e.
+ * failing to load DSP firmware is NOT an error.
+ */
+ tas_priv->fw_state = TASDEVICE_RCA_FW_OK;
scnprintf(tas_priv->coef_binaryname, 64, "%s_coef.bin",
tas_priv->dev_name);
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;
}
- tasdevice_dsp_create_ctrls(tas_priv);
+
+ /*
+ * If no dsp-related kcontrol created, the dsp resource will be freed.
+ */
+ ret = tasdevice_dsp_create_ctrls(tas_priv);
+ if (ret) {
+ dev_err(tas_priv->dev, "dsp controls error\n");
+ goto out;
+ }
tas_priv->fw_state = TASDEVICE_DSP_FW_ALL_OK;
@@ -415,9 +429,8 @@ static void tasdevice_fw_ready(const struct firmware *fmw,
tasdevice_prmg_load(tas_priv, 0);
tas_priv->cur_prog = 0;
out:
- if (tas_priv->fw_state == TASDEVICE_DSP_FW_FAIL) {
- /*If DSP FW fail, kcontrol won't be created */
- tasdevice_config_info_remove(tas_priv);
+ if (tas_priv->fw_state == TASDEVICE_RCA_FW_OK) {
+ /* If DSP FW fail, DSP kcontrol won't be created. */
tasdevice_dsp_remove(tas_priv);
}
mutex_unlock(&tas_priv->codec_lock);
@@ -464,14 +477,14 @@ static int tasdevice_startup(struct snd_pcm_substream *substream,
{
struct snd_soc_component *codec = dai->component;
struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
- int ret = 0;
- if (tas_priv->fw_state != TASDEVICE_DSP_FW_ALL_OK) {
- dev_err(tas_priv->dev, "DSP bin file not loaded\n");
- ret = -EINVAL;
+ switch (tas_priv->fw_state) {
+ case TASDEVICE_RCA_FW_OK:
+ case TASDEVICE_DSP_FW_ALL_OK:
+ return 0;
+ default:
+ return -EINVAL;
}
-
- return ret;
}
static int tasdevice_hw_params(struct snd_pcm_substream *substream,
