linux-kernel - [PATCH] ASoC: amd: ps: Fix for enabling DMIC on acp63 platform via

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Message-ID: <20241213061147.1060451-1-venkataprasad.potturu@amd.com>
Date: Fri, 13 Dec 2024 11:41:46 +0530
From: Venkata Prasad Potturu <venkataprasad.potturu@....com>
To: <broonie@...nel.org>, <alsa-devel@...a-project.org>
CC: <Vijendar.Mukunda@....com>, <mario.limonciello@....com>,
	<Basavaraj.Hiregoudar@....com>, <Sunil-kumar.Dommati@....com>,
	<syed.sabakareem@....com>, Venkata Prasad Potturu
	<venkataprasad.potturu@....com>, Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, Bard Liao
	<yung-chuan.liao@...ux.intel.com>, Péter Ujfalusi
	<peter.ujfalusi@...ux.intel.com>, Pierre-Louis Bossart
	<pierre-louis.bossart@...ux.dev>, "open list:SOUND - SOC LAYER / DYNAMIC
 AUDIO POWER MANAGEM..." <linux-sound@...r.kernel.org>, open list
	<linux-kernel@...r.kernel.org>
Subject: [PATCH] ASoC: amd: ps: Fix for enabling DMIC on acp63 platform via _DSD entry

Add condition check to register ACP PDM sound card by reading
_WOV acpi entry.

Fixes: 0386d765f27a ("ASoC: amd: ps: refactor acp device configuration read logic")

Signed-off-by: Venkata Prasad Potturu <venkataprasad.potturu@....com>
---
 sound/soc/amd/ps/pci-ps.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/sound/soc/amd/ps/pci-ps.c b/sound/soc/amd/ps/pci-ps.c
index a7583844f5b4..983d7fa13938 100644
--- a/sound/soc/amd/ps/pci-ps.c
+++ b/sound/soc/amd/ps/pci-ps.c
@@ -374,11 +374,18 @@ static int get_acp63_device_config(struct pci_dev *pci, struct acp63_dev_data *a
 {
 	struct acpi_device *pdm_dev;
 	const union acpi_object *obj;
+	acpi_handle handle;
+	acpi_integer dmic_status;
 	u32 config;
 	bool is_dmic_dev = false;
 	bool is_sdw_dev = false;
+	bool wov_en, dmic_en;
 	int ret;
 
+	/* IF WOV entry not found, enable dmic based on acp-audio-device-type entry*/
+	wov_en = true;
+	dmic_en = false;
+
 	config = readl(acp_data->acp63_base + ACP_PIN_CONFIG);
 	switch (config) {
 	case ACP_CONFIG_4:
@@ -411,10 +418,18 @@ static int get_acp63_device_config(struct pci_dev *pci, struct acp63_dev_data *a
 			if (!acpi_dev_get_property(pdm_dev, "acp-audio-device-type",
 						   ACPI_TYPE_INTEGER, &obj) &&
 						   obj->integer.value == ACP_DMIC_DEV)
-				is_dmic_dev = true;
+				dmic_en = true;
 		}
+
+		handle = ACPI_HANDLE(&pci->dev);
+		ret = acpi_evaluate_integer(handle, "_WOV", NULL, &dmic_status);
+		if (!ACPI_FAILURE(ret))
+			wov_en = dmic_status;
 	}
 
+	if (dmic_en && wov_en)
+		is_dmic_dev = true;
+
 	if (acp_data->is_sdw_config) {
 		ret = acp_scan_sdw_devices(&pci->dev, ACP63_SDW_ADDR);
 		if (!ret && acp_data->info.link_mask)
-- 
2.25.1