[PATCH 5.17 0937/1126] ASoC: SOF: Intel: hda: retrieve DMIC number for I2S boards

Greg Kroah-Hartman
2022-04-05T10:08:38Z

From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>

[ Upstream commit 92c1b7c0f780f0084f7b114be316ae4e182676e5 ]

We currently extract the DMIC number only for HDaudio or SoundWire
platforms. For I2S/TDM platforms, this wasn't necessary until now, but
with devices with ES8336 we need to find a solution to detect dmics
more reliably than with a DMI quirk.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20220308192610.392950-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/sof/intel/hda.c | 46 +++++++++++++++++++++------------------
1 file changed, 25 insertions(+), 21 deletions(-)

diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 848d1d563170..028751549f6d 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -432,11 +432,9 @@ static char *hda_model;
module_param(hda_model, charp, 0444);
MODULE_PARM_DESC(hda_model, "Use the given HDA board model.");

-#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) || IS_ENABLED(CONFIG_SND_SOC_SOF_INTEL_SOUNDWIRE)
-static int hda_dmic_num = -1;
-module_param_named(dmic_num, hda_dmic_num, int, 0444);
+static int dmic_num_override = -1;
+module_param_named(dmic_num, dmic_num_override, int, 0444);
MODULE_PARM_DESC(dmic_num, "SOF HDA DMIC number");
-#endif

#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
static bool hda_codec_use_common_hdmi = IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI);
@@ -644,24 +642,35 @@ static int hda_init(struct snd_sof_dev *sdev)
return ret;
}

-#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) || IS_ENABLED(CONFIG_SND_SOC_SOF_INTEL_SOUNDWIRE)
-
-static int check_nhlt_dmic(struct snd_sof_dev *sdev)
+static int check_dmic_num(struct snd_sof_dev *sdev)
{
struct nhlt_acpi_table *nhlt;
- int dmic_num;
+ int dmic_num = 0;

nhlt = intel_nhlt_init(sdev->dev);
if (nhlt) {
dmic_num = intel_nhlt_get_dmic_geo(sdev->dev, nhlt);
intel_nhlt_free(nhlt);
- if (dmic_num >= 1 && dmic_num <= 4)
- return dmic_num;
}

- return 0;
+ /* allow for module parameter override */
+ if (dmic_num_override != -1) {
+ dev_dbg(sdev->dev,
+ "overriding DMICs detected in NHLT tables %d by kernel param %d\n",
+ dmic_num, dmic_num_override);
+ dmic_num = dmic_num_override;
+ }
+
+ if (dmic_num < 0 || dmic_num > 4) {
+ dev_dbg(sdev->dev, "invalid dmic_number %d\n", dmic_num);
+ dmic_num = 0;
+ }
+
+ return dmic_num;
}

+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) || IS_ENABLED(CONFIG_SND_SOC_SOF_INTEL_SOUNDWIRE)
+
static const char *fixup_tplg_name(struct snd_sof_dev *sdev,
const char *sof_tplg_filename,
const char *idisp_str,
@@ -697,16 +706,8 @@ static int dmic_topology_fixup(struct snd_sof_dev *sdev,
const char *dmic_str;
int dmic_num;

- /* first check NHLT for DMICs */
- dmic_num = check_nhlt_dmic(sdev);
-
- /* allow for module parameter override */
- if (hda_dmic_num != -1) {
- dev_dbg(sdev->dev,
- "overriding DMICs detected in NHLT tables %d by kernel param %d\n",
- dmic_num, hda_dmic_num);
- dmic_num = hda_dmic_num;
- }
+ /* first check for DMICs (using NHLT or module parameter) */
+ dmic_num = check_dmic_num(sdev);

switch (dmic_num) {
case 1:
@@ -1392,6 +1393,9 @@ struct snd_soc_acpi_mach *hda_machine_select(struct snd_sof_dev *sdev)
if (!sof_pdata->tplg_filename)
sof_pdata->tplg_filename = mach->sof_tplg_filename;

+ /* report to machine driver if any DMICs are found */
+ mach->mach_params.dmic_num = check_dmic_num(sdev);
+
if (mach->link_mask) {
mach->mach_params.links = mach->links;
mach->mach_params.link_mask = mach->link_mask;
--
2.34.1