[PATCH 0/2] Allow detecting ACP6x DMIC via _DSD
It's not possible to probe for the presence of a DMIC, so the ACP6x machine driver currently has a hardcoded list of all the systems known to have a DMIC connected to the ACP.
Although this design works it means that the acp6x driver needs to always grow with more systems and worse, if an OEM introduces a new system there will be a mismatch in time that even if the driver (otherwise) works fine it needs their system added to the list to work.
So this series introduces a _DSD that OEMs can populate into the BIOS to indicate presence of a DMIC.
Mario Limonciello (2): ASoC: amd: Add driver data to acp6x machine driver ASoC: amd: Add support for enabling DMIC on acp6x via _DSD
sound/soc/amd/yc/acp6x-mach.c | 42 +++++++++++++++++++++++++++++++---- 1 file changed, 38 insertions(+), 4 deletions(-)
Currently all of the quirked systems use the same card and so the DMI quirk list doesn't contain driver data.
Add driver data to these quirks and then check the data was present or not. This will allow potentially setting quirks for systems with faulty firmware that claims to have a DMIC but doesn't really.
Signed-off-by: Mario Limonciello mario.limonciello@amd.com --- sound/soc/amd/yc/acp6x-mach.c | 29 +++++++++++++++++++++++++---- 1 file changed, 25 insertions(+), 4 deletions(-)
diff --git a/sound/soc/amd/yc/acp6x-mach.c b/sound/soc/amd/yc/acp6x-mach.c index 9a767f47b89f..959b70e8baf2 100644 --- a/sound/soc/amd/yc/acp6x-mach.c +++ b/sound/soc/amd/yc/acp6x-mach.c @@ -45,108 +45,126 @@ static struct snd_soc_card acp6x_card = {
static const struct dmi_system_id yc_acp_quirk_table[] = { { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21D2"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21D3"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21D4"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21D5"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21CF"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21CG"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21CQ"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21CR"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21AW"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21AX"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21BN"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21BQ"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21CH"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21CJ"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21CK"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21CL"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21D8"), } }, { + .driver_data = &acp6x_card, .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "21D9"), @@ -157,18 +175,21 @@ static const struct dmi_system_id yc_acp_quirk_table[] = {
static int acp6x_probe(struct platform_device *pdev) { + const struct dmi_system_id *dmi_id; struct acp6x_pdm *machine = NULL; struct snd_soc_card *card; int ret; - const struct dmi_system_id *dmi_id;
+ /* check for any DMI overrides */ dmi_id = dmi_first_match(yc_acp_quirk_table); - if (!dmi_id) + if (dmi_id) + platform_set_drvdata(pdev, dmi_id->driver_data); + + card = platform_get_drvdata(pdev); + if (!card) return -ENODEV; - card = &acp6x_card; acp6x_card.dev = &pdev->dev;
- platform_set_drvdata(pdev, card); snd_soc_card_set_drvdata(card, machine); ret = devm_snd_soc_register_card(&pdev->dev, card); if (ret) {
Currently the acp6x machine driver requires a hardcoded list of systems that physically have DMIC connected.
To avoid having to continually add to an evergrowing list of systems add support for a _DSD that can advertise this.
OEMs can add this _DSD to their BIOS under the ACP device to automatically add the device to this driver without requiring any driver modifications.
Signed-off-by: Mario Limonciello mario.limonciello@amd.com --- sound/soc/amd/yc/acp6x-mach.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/sound/soc/amd/yc/acp6x-mach.c b/sound/soc/amd/yc/acp6x-mach.c index 959b70e8baf2..f06e6c1a7799 100644 --- a/sound/soc/amd/yc/acp6x-mach.c +++ b/sound/soc/amd/yc/acp6x-mach.c @@ -12,6 +12,7 @@ #include <sound/pcm_params.h> #include <linux/io.h> #include <linux/dmi.h> +#include <linux/acpi.h>
#include "acp6x.h"
@@ -178,8 +179,19 @@ static int acp6x_probe(struct platform_device *pdev) const struct dmi_system_id *dmi_id; struct acp6x_pdm *machine = NULL; struct snd_soc_card *card; + struct acpi_device *adev; int ret;
+ /* check the parent device's firmware node has _DSD or not */ + adev = ACPI_COMPANION(pdev->dev.parent); + if (adev) { + const union acpi_object *obj; + + if (!acpi_dev_get_property(adev, "AcpDmicConnected", ACPI_TYPE_INTEGER, &obj) && + obj->integer.value == 1) + platform_set_drvdata(pdev, &acp6x_card); + } + /* check for any DMI overrides */ dmi_id = dmi_first_match(yc_acp_quirk_table); if (dmi_id) @@ -188,6 +200,7 @@ static int acp6x_probe(struct platform_device *pdev) card = platform_get_drvdata(pdev); if (!card) return -ENODEV; + dev_info(&pdev->dev, "Enabling ACP DMIC support via %s", dmi_id ? "DMI" : "ACPI"); acp6x_card.dev = &pdev->dev;
snd_soc_card_set_drvdata(card, machine);
On Mon, 11 Apr 2022 08:45:30 -0500, Mario Limonciello wrote:
It's not possible to probe for the presence of a DMIC, so the ACP6x machine driver currently has a hardcoded list of all the systems known to have a DMIC connected to the ACP.
Although this design works it means that the acp6x driver needs to always grow with more systems and worse, if an OEM introduces a new system there will be a mismatch in time that even if the driver (otherwise) works fine it needs their system added to the list to work.
[...]
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/2] ASoC: amd: Add driver data to acp6x machine driver commit: e521f087780d07731e8c950f2f34d08358c86bc9 [2/2] ASoC: amd: Add support for enabling DMIC on acp6x via _DSD commit: 5426f506b58424f8ab2cd741bacf4b18b5fe578e
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
participants (2)
-
Mario Limonciello -
Mark Brown