sound/soc/sof/amd/acp-common.c

Source file repositories/reference/linux-study-clean/sound/soc/sof/amd/acp-common.c

File Facts

System
Linux kernel
Corpus path
sound/soc/sof/amd/acp-common.c
Extension
.c
Size
8520 bytes
Lines
269
Domain
Driver Families
Bucket
sound/soc
Inferred role
Driver Families: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

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->peripherals))
					break;
			}
			if (i == acp_data->info.count || !link->num_adr)
				if (!mach->machine_check || mach->machine_check(acp_data->sdw))
					break;
		}
		if (mach && mach->link_mask) {
			mach->mach_params.subsystem_rev = acp_data->pci_rev;
			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;
	struct acp_dev_data *acp_data = sdev->pdata->hw_pdata;
	const struct sof_dev_desc *desc = sof_pdata->desc;
	struct snd_soc_acpi_mach *mach = NULL;

	if (desc->machines)
		mach = snd_soc_acpi_find_machine(desc->machines);
	if (!mach) {
		mach = amd_sof_sdw_machine_select(sdev);
		if (!mach) {
			dev_warn(sdev->dev, "No matching ASoC machine driver found\n");
			return NULL;
		}
	}

	mach->mach_params.subsystem_rev = acp_data->pci_rev;
	sof_pdata->tplg_filename = mach->sof_tplg_filename;
	sof_pdata->fw_filename = mach->fw_filename;

	return mach;
}

/* AMD Common DSP ops */
const struct snd_sof_dsp_ops sof_acp_common_ops = {
	/* probe and remove */
	.probe			= amd_sof_acp_probe,
	.remove			= amd_sof_acp_remove,

	/* Register IO */
	.write			= sof_io_write,
	.read			= sof_io_read,

	/* Block IO */
	.block_read		= acp_dsp_block_read,
	.block_write		= acp_dsp_block_write,

	/*Firmware loading */
	.load_firmware		= snd_sof_load_firmware_memcpy,
	.pre_fw_run		= acp_dsp_pre_fw_run,
	.get_bar_index		= acp_get_bar_index,

	/* DSP core boot */
	.run			= acp_sof_dsp_run,

	/*IPC */
	.send_msg		= acp_sof_ipc_send_msg,
	.ipc_msg_data		= acp_sof_ipc_msg_data,
	.set_stream_data_offset = acp_set_stream_data_offset,
	.get_mailbox_offset	= acp_sof_ipc_get_mailbox_offset,
	.get_window_offset      = acp_sof_ipc_get_window_offset,
	.irq_thread		= acp_sof_ipc_irq_thread,

Annotation

Implementation Notes