diff options
| author | Pierre-Louis Bossart | 2024-04-26 10:28:18 -0500 |
|---|---|---|
| committer | Takashi Iwai | 2024-04-29 17:02:21 +0200 |
| commit | 79ac4c1443eaec0d09355307043a9149287f23c1 (patch) | |
| tree | 0de243e6065086346864058d77dbd6c3071db5ff /sound | |
| parent | 2d5af3ab9e6f1cf1468b2a5221b5c1f7f46c3333 (diff) | |
ALSA: hda: intel-dsp-config: harden I2C/I2S codec detection
The SOF driver is selected whenever specific I2C/I2S HIDs are reported
as 'present' in the ACPI DSDT. In some cases, an HID is reported but
the hardware does not actually rely on I2C/I2S. This false positive
leads to an invalid selection of the SOF driver and as a result an
invalid topology is loaded.
This patch hardens the detection with a check that the NHLT table is
consistent with the report of an I2S-based codec in DSDT. This table
should expose at least one SSP endpoint configured for an I2S-codec
connection.
Tested on Huawei Matebook D14 (NBLB-WAX9N) using an HDaudio codec with
an invalid ES8336 ACPI HID reported:
[ 7.858249] snd_hda_intel 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040380
[ 7.858312] snd_hda_intel 0000:00:1f.3: snd_intel_dsp_find_config: no valid SSP found for HID ESSX8336, skipped
Reported-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Tested-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Closes: https://github.com/thesofproject/linux/issues/4934
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>
Message-ID: <20240426152818.38443-1-pierre-louis.bossart@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/hda/intel-dsp-config.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/sound/hda/intel-dsp-config.c b/sound/hda/intel-dsp-config.c index 6a384b922e4f..d1f6cdcf1866 100644 --- a/sound/hda/intel-dsp-config.c +++ b/sound/hda/intel-dsp-config.c @@ -557,9 +557,32 @@ static const struct config_entry *snd_intel_dsp_find_config if (table->codec_hid) { int i; - for (i = 0; i < table->codec_hid->num_codecs; i++) - if (acpi_dev_present(table->codec_hid->codecs[i], NULL, -1)) + for (i = 0; i < table->codec_hid->num_codecs; i++) { + struct nhlt_acpi_table *nhlt; + bool ssp_found = false; + + if (!acpi_dev_present(table->codec_hid->codecs[i], NULL, -1)) + continue; + + nhlt = intel_nhlt_init(&pci->dev); + if (!nhlt) { + dev_warn(&pci->dev, "%s: NHLT table not found, skipped HID %s\n", + __func__, table->codec_hid->codecs[i]); + continue; + } + + if (intel_nhlt_has_endpoint_type(nhlt, NHLT_LINK_SSP) && + intel_nhlt_ssp_endpoint_mask(nhlt, NHLT_DEVICE_I2S)) + ssp_found = true; + + intel_nhlt_free(nhlt); + + if (ssp_found) break; + + dev_warn(&pci->dev, "%s: no valid SSP found for HID %s, skipped\n", + __func__, table->codec_hid->codecs[i]); + } if (i == table->codec_hid->num_codecs) continue; } |