sound/soc/intel/common/soc-intel-quirks.h

Source file repositories/reference/linux-study-clean/sound/soc/intel/common/soc-intel-quirks.h

File Facts

System
Linux kernel
Corpus path
sound/soc/intel/common/soc-intel-quirks.h
Extension
.h
Size
2406 bytes
Lines
99
Domain
Driver Families
Bucket
sound/soc
Inferred role
Driver Families: implementation source
Status
source 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 (status) {
			dev_err(dev, "could not read PUNIT BIOS_CONFIG\n");
		} else {
			/* bits 26:27 mirror PMIC options */
			bios_status = (bios_status >> 26) & 3;

			if (bios_status == 1 || bios_status == 3) {
				dev_info(dev, "Detected Baytrail-CR platform\n");
				return true;
			}

			dev_info(dev, "BYT-CR not detected\n");
		}
	} else {
		dev_info(dev, "IOSF_MBI not available, no BYT-CR detection\n");
	}

	if (!platform_get_resource(pdev, IORESOURCE_IRQ, 5)) {
		/*
		 * Some devices detected as BYT-T have only a single IRQ listed,
		 * causing platform_get_irq with index 5 to return -ENXIO.
		 * The correct IRQ in this case is at index 0, as on BYT-CR.
		 */
		dev_info(dev, "Falling back to Baytrail-CR platform\n");
		return true;
	}

	return false;
}

#else

static inline bool soc_intel_is_byt_cr(struct platform_device *pdev)
{
	return false;
}

#endif

#endif /* _SND_SOC_INTEL_QUIRKS_H */

Annotation

Implementation Notes