sound/soc/sdca/sdca_jack.c

Source file repositories/reference/linux-study-clean/sound/soc/sdca/sdca_jack.c

File Facts

System
Linux kernel
Corpus path
sound/soc/sdca/sdca_jack.c
Extension
.c
Size
7048 bytes
Lines
263
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_err(dev, "failed to re-check selected mode: %d\n", ret);
			return ret;
		}
		break;
	default:
		break;
	}

	dev_dbg(dev, "%s: %#x\n", interrupt->name, val);

	if (kctl) {
		struct soc_enum *soc_enum = (struct soc_enum *)kctl->private_value;

		ucontrol = kzalloc_obj(*ucontrol);
		if (!ucontrol)
			return -ENOMEM;

		ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(soc_enum, val);

		ret = snd_soc_dapm_put_enum_double(kctl, ucontrol);
		if (ret < 0) {
			dev_err(dev, "failed to update selected mode: %d\n", ret);
			return ret;
		}

		snd_ctl_notify(card->snd_card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
	} else {
		ret = regmap_write(interrupt->function_regmap, reg, val);
		if (ret) {
			dev_err(dev, "failed to write selected mode: %d\n", ret);
			return ret;
		}
	}

	return sdca_jack_report(interrupt);
}
EXPORT_SYMBOL_NS_GPL(sdca_jack_process, "SND_SOC_SDCA");

/**
 * sdca_jack_alloc_state - allocate state for a jack interrupt
 * @interrupt: SDCA interrupt structure.
 *
 * Return: Zero on success or a negative error code.
 */
int sdca_jack_alloc_state(struct sdca_interrupt *interrupt)
{
	struct device *dev = interrupt->dev;
	struct jack_state *jack_state;

	jack_state = devm_kzalloc(dev, sizeof(*jack_state), GFP_KERNEL);
	if (!jack_state)
		return -ENOMEM;

	interrupt->priv = jack_state;

	return 0;
}
EXPORT_SYMBOL_NS_GPL(sdca_jack_alloc_state, "SND_SOC_SDCA");

static int type_get_mask(enum sdca_terminal_type type)
{
	switch (type) {
	case SDCA_TERM_TYPE_LINEIN_STEREO:
	case SDCA_TERM_TYPE_LINEIN_FRONT_LR:
	case SDCA_TERM_TYPE_LINEIN_CENTER_LFE:
	case SDCA_TERM_TYPE_LINEIN_SURROUND_LR:
	case SDCA_TERM_TYPE_LINEIN_REAR_LR:
		return SND_JACK_LINEIN;
	case SDCA_TERM_TYPE_LINEOUT_STEREO:
	case SDCA_TERM_TYPE_LINEOUT_FRONT_LR:
	case SDCA_TERM_TYPE_LINEOUT_CENTER_LFE:
	case SDCA_TERM_TYPE_LINEOUT_SURROUND_LR:
	case SDCA_TERM_TYPE_LINEOUT_REAR_LR:
		return SND_JACK_LINEOUT;
	case SDCA_TERM_TYPE_MIC_JACK:
		return SND_JACK_MICROPHONE;
	case SDCA_TERM_TYPE_HEADPHONE_JACK:
		return SND_JACK_HEADPHONE;
	case SDCA_TERM_TYPE_HEADSET_JACK:
		return SND_JACK_HEADSET;
	default:
		return 0;
	}
}

/**
 * sdca_jack_set_jack - attach an ASoC jack to SDCA
 * @info: SDCA interrupt information.
 * @jack: ASoC jack to be attached.

Annotation

Implementation Notes