sound/soc/sof/intel/hda.c

Source file repositories/reference/linux-study-clean/sound/soc/sof/intel/hda.c

File Facts

System
Linux kernel
Corpus path
sound/soc/sof/intel/hda.c
Extension
.c
Size
48848 bytes
Lines
1783
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

static inline void hda_dsp_sdw_process_mic_privacy(struct snd_sof_dev *sdev) { }

#endif /* IS_ENABLED(CONFIG_SND_SOC_SOF_INTEL_SOUNDWIRE) */

/* pre fw run operations */
int hda_dsp_pre_fw_run(struct snd_sof_dev *sdev)
{
	/* disable clock gating and power gating */
	return hda_dsp_ctrl_clock_power_gating(sdev, false);
}

/* post fw run operations */
int hda_dsp_post_fw_run(struct snd_sof_dev *sdev)
{
	int ret;

	if (sdev->first_boot) {
		struct sof_intel_hda_dev *hdev = sdev->pdata->hw_pdata;

		ret = hda_sdw_startup(sdev);
		if (ret < 0) {
			dev_err(sdev->dev,
				"error: could not startup SoundWire links\n");
			return ret;
		}

		/* Check if IMR boot is usable */
		if (!sof_debug_check_flag(SOF_DBG_IGNORE_D3_PERSISTENT) &&
		    (sdev->fw_ready.flags & SOF_IPC_INFO_D3_PERSISTENT ||
		     sdev->pdata->ipc_type == SOF_IPC_TYPE_4)) {
			hdev->imrboot_supported = true;
			debugfs_create_bool("skip_imr_boot",
					    0644, sdev->debugfs_root,
					    &hdev->skip_imr_boot);
		}
	}

	hda_sdw_int_enable(sdev, true);

	/* re-enable clock gating and power gating */
	return hda_dsp_ctrl_clock_power_gating(sdev, true);
}
EXPORT_SYMBOL_NS(hda_dsp_post_fw_run, "SND_SOC_SOF_INTEL_HDA_GENERIC");

/*
 * Debug
 */

#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG)
static bool hda_use_msi = true;
module_param_named(use_msi, hda_use_msi, bool, 0444);
MODULE_PARM_DESC(use_msi, "SOF HDA use PCI MSI mode");
#else
#define hda_use_msi	(1)
#endif

static char *hda_model;
module_param(hda_model, charp, 0444);
MODULE_PARM_DESC(hda_model, "Use the given HDA board model.");

static int dmic_num_override = -1;
module_param_named(dmic_num, dmic_num_override, int, 0444);
MODULE_PARM_DESC(dmic_num, "SOF HDA DMIC number");

static int mclk_id_override = -1;
module_param_named(mclk_id, mclk_id_override, int, 0444);
MODULE_PARM_DESC(mclk_id, "SOF SSP mclk_id");

static int bt_link_mask_override = -1;
module_param_named(bt_link_mask, bt_link_mask_override, int, 0444);
MODULE_PARM_DESC(bt_link_mask, "SOF BT offload link mask");

static int hda_init(struct snd_sof_dev *sdev)
{
	struct hda_bus *hbus;
	struct hdac_bus *bus;
	struct pci_dev *pci = to_pci_dev(sdev->dev);
	int ret;

	hbus = sof_to_hbus(sdev);
	bus = sof_to_bus(sdev);

	/* HDA bus init */
	sof_hda_bus_init(sdev, &pci->dev);

	if (sof_hda_position_quirk == SOF_HDA_POSITION_QUIRK_USE_DPIB_REGISTERS)
		bus->use_posbuf = 0;
	else
		bus->use_posbuf = 1;
	bus->bdl_pos_adj = 0;

Annotation

Implementation Notes