linux-kernel - [PATCH 09/12] ASoC: SOF: amd: add machine select logic for soundwire based platforms

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Message-ID: <20231221073558.3181911-10-Vijendar.Mukunda@amd.com>
Date: Thu, 21 Dec 2023 13:05:55 +0530
From: Vijendar Mukunda <Vijendar.Mukunda@....com>
To: <broonie@...nel.org>, <vkoul@...nel.org>
CC: <alsa-devel@...a-project.org>, <Basavaraj.Hiregoudar@....com>,
	<Sunil-kumar.Dommati@....com>, <pierre-louis.bossart@...ux.intel.com>,
	<vinod.koul@...el.com>, <venkataprasad.potturu@....com>, Vijendar Mukunda
	<Vijendar.Mukunda@....com>, Liam Girdwood <lgirdwood@...il.com>, "Peter
 Ujfalusi" <peter.ujfalusi@...ux.intel.com>, Bard Liao
	<yung-chuan.liao@...ux.intel.com>, Ranjani Sridharan
	<ranjani.sridharan@...ux.intel.com>, Daniel Baluta <daniel.baluta@....com>,
	Kai Vehmanen <kai.vehmanen@...ux.intel.com>, Jaroslav Kysela
	<perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, V sujith kumar Reddy
	<Vsujithkumar.Reddy@....com>, Wang Jinchao <wangjinchao@...sion.com>,
	"moderated list:SOUND - SOUND OPEN FIRMWARE (SOF) DRIVERS"
	<sound-open-firmware@...a-project.org>, "open list:SOUND - SOC LAYER /
 DYNAMIC AUDIO POWER MANAGEM..." <linux-sound@...r.kernel.org>, open list
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 09/12] ASoC: SOF: amd: add machine select logic for soundwire based platforms

Add machine select logic for soundwire endpoints for AMD platforms.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
---
 sound/soc/sof/amd/acp-common.c | 65 +++++++++++++++++++++++++++++++---
 1 file changed, 61 insertions(+), 4 deletions(-)

diff --git a/sound/soc/sof/amd/acp-common.c b/sound/soc/sof/amd/acp-common.c
index 2d72c6d55dc8..0fc4e20ec673 100644
--- a/sound/soc/sof/amd/acp-common.c
+++ b/sound/soc/sof/amd/acp-common.c
@@ -118,16 +118,72 @@ void amd_sof_dump(struct snd_sof_dev *sdev, u32 flags)
 				 &panic_info, stack, AMD_STACK_DUMP_SIZE);
 }
 
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_AMD_SOUNDWIRE)
+static int amd_sof_sdw_get_slave_info(struct snd_sof_dev *sdev)
+{
+	struct acp_dev_data *acp_data = sdev->pdata->hw_pdata;
+
+	return sdw_amd_get_slave_info(acp_data->sdw);
+}
+
+static struct snd_soc_acpi_mach *amd_sof_sdw_machine_select(struct snd_sof_dev *sdev)
+{
+	struct snd_soc_acpi_mach *mach;
+	const struct snd_soc_acpi_link_adr *link;
+	struct acp_dev_data *acp_data = sdev->pdata->hw_pdata;
+	int ret, i;
+
+	if (acp_data->info.count) {
+		ret = amd_sof_sdw_get_slave_info(sdev);
+		if (ret) {
+			dev_info(sdev->dev, "failed to read slave information\n");
+			return NULL;
+		}
+		for (mach = sdev->pdata->desc->alt_machines; mach; mach++) {
+			if (!mach->links)
+				break;
+			link = mach->links;
+			for (i = 0; i < acp_data->info.count && link->num_adr; link++, i++) {
+				if (!snd_soc_acpi_sdw_link_slaves_found(sdev->dev, link,
+									acp_data->sdw->ids,
+									acp_data->sdw->num_slaves))
+					break;
+			}
+			if (i == acp_data->info.count || !link->num_adr)
+				break;
+		}
+		if (mach && mach->link_mask) {
+			mach->mach_params.links = mach->links;
+			mach->mach_params.link_mask = mach->link_mask;
+			mach->mach_params.platform = dev_name(sdev->dev);
+			return mach;
+		}
+	}
+	dev_info(sdev->dev, "No SoundWire machine driver found\n");
+	return NULL;
+}
+
+#else
+static struct snd_soc_acpi_mach *amd_sof_sdw_machine_select(struct snd_sof_dev *sdev)
+{
+	return NULL;
+}
+#endif
+
 struct snd_soc_acpi_mach *amd_sof_machine_select(struct snd_sof_dev *sdev)
 {
 	struct snd_sof_pdata *sof_pdata = sdev->pdata;
 	const struct sof_dev_desc *desc = sof_pdata->desc;
-	struct snd_soc_acpi_mach *mach;
+	struct snd_soc_acpi_mach *mach = NULL;
 
-	mach = snd_soc_acpi_find_machine(desc->machines);
+	if (desc->machines)
+		mach = snd_soc_acpi_find_machine(desc->machines);
 	if (!mach) {
-		dev_warn(sdev->dev, "No matching ASoC machine driver found\n");
-		return NULL;
+		mach = amd_sof_sdw_machine_select(sdev);
+		if (!mach) {
+			dev_warn(sdev->dev, "No matching ASoC machine driver found\n");
+			return NULL;
+		}
 	}
 
 	sof_pdata->tplg_filename = mach->sof_tplg_filename;
@@ -204,5 +260,6 @@ EXPORT_SYMBOL_NS(sof_acp_common_ops, SND_SOC_SOF_AMD_COMMON);
 
 MODULE_IMPORT_NS(SND_SOC_SOF_AMD_COMMON);
 MODULE_IMPORT_NS(SND_SOC_SOF_XTENSA);
+MODULE_IMPORT_NS(SOUNDWIRE_AMD_INIT);
 MODULE_DESCRIPTION("ACP SOF COMMON Driver");
 MODULE_LICENSE("Dual BSD/GPL");
-- 
2.34.1