This is a note to let you know that I've just added the patch titled
ASoC: Intel: soc-acpi-cht: Add quirk for Nextbook Ares 8A tablet
to the 6.3-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-intel-soc-acpi-cht-add-quirk-for-nextbook-ares-.patch
and it can be found in the queue-6.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit d28c5b4cc75bb24c228ce729255fe7450fac04df
Author: Hans de Goede <hdegoede@xxxxxxxxxx>
Date: Sat Apr 29 12:47:21 2023 +0200
ASoC: Intel: soc-acpi-cht: Add quirk for Nextbook Ares 8A tablet
[ Upstream commit ec6f82b4c63cc68f8dc03316e725106d242706be ]
The Nextbook Ares 8A tablet which has Android as factory OS, has a buggy
DSDT with both ESSX8316 and 10EC5651 ACPI devices.
This tablet actually uses an rt5651 codec, but the matching code ends up
picking the ESSX8316 device, add a quirk to ignote the ESSX8316 device
on this tablet.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Message-Id: <20230429104721.7176-1-hdegoede@xxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/intel/common/soc-acpi-intel-cht-match.c b/sound/soc/intel/common/soc-acpi-intel-cht-match.c
index 6beb00858c33f..cdcbf04b8832f 100644
--- a/sound/soc/intel/common/soc-acpi-intel-cht-match.c
+++ b/sound/soc/intel/common/soc-acpi-intel-cht-match.c
@@ -50,6 +50,31 @@ static struct snd_soc_acpi_mach *cht_quirk(void *arg)
return mach;
}
+/*
+ * Some tablets with Android factory OS have buggy DSDTs with an ESSX8316 device
+ * in the ACPI tables. While they are not using an ESS8316 codec. These DSDTs
+ * also have an ACPI device for the correct codec, ignore the ESSX8316.
+ */
+static const struct dmi_system_id cht_ess8316_not_present_table[] = {
+ {
+ /* Nextbook Ares 8A */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "CherryTrail"),
+ DMI_MATCH(DMI_BIOS_VERSION, "M882"),
+ },
+ },
+ { }
+};
+
+static struct snd_soc_acpi_mach *cht_ess8316_quirk(void *arg)
+{
+ if (dmi_check_system(cht_ess8316_not_present_table))
+ return NULL;
+
+ return arg;
+}
+
static const struct snd_soc_acpi_codecs rt5640_comp_ids = {
.num_codecs = 2,
.codecs = { "10EC5640", "10EC3276" },
@@ -113,6 +138,7 @@ struct snd_soc_acpi_mach snd_soc_acpi_intel_cherrytrail_machines[] = {
.drv_name = "bytcht_es8316",
.fw_filename = "intel/fw_sst_22a8.bin",
.board = "bytcht_es8316",
+ .machine_quirk = cht_ess8316_quirk,
.sof_tplg_filename = "sof-cht-es8316.tplg",
},
/* some CHT-T platforms rely on RT5640, use Baytrail machine driver */
