sound/soc/codecs/adav80x.c

Source file repositories/reference/linux-study-clean/sound/soc/codecs/adav80x.c

File Facts

System
Linux kernel
Corpus path
sound/soc/codecs/adav80x.c
Extension
.c
Size
24504 bytes
Lines
883
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

struct adav80x {
	struct regmap *regmap;

	enum adav80x_clk_src clk_src;
	unsigned int sysclk;
	enum adav80x_pll_src pll_src;

	unsigned int dai_fmt[2];
	unsigned int rate;
	bool deemph;
	bool sysclk_pd[3];
};

static const char *adav80x_mux_text[] = {
	"ADC",
	"Playback",
	"Aux Playback",
};

static const unsigned int adav80x_mux_values[] = {
	0, 2, 3,
};

#define ADAV80X_MUX_ENUM_DECL(name, reg, shift) \
	SOC_VALUE_ENUM_DOUBLE_DECL(name, reg, shift, 7, \
		ARRAY_SIZE(adav80x_mux_text), adav80x_mux_text, \
		adav80x_mux_values)

static ADAV80X_MUX_ENUM_DECL(adav80x_aux_capture_enum, ADAV80X_DPATH_CTRL1, 0);
static ADAV80X_MUX_ENUM_DECL(adav80x_capture_enum, ADAV80X_DPATH_CTRL1, 3);
static ADAV80X_MUX_ENUM_DECL(adav80x_dac_enum, ADAV80X_DPATH_CTRL2, 3);

static const struct snd_kcontrol_new adav80x_aux_capture_mux_ctrl =
	SOC_DAPM_ENUM("Route", adav80x_aux_capture_enum);
static const struct snd_kcontrol_new adav80x_capture_mux_ctrl =
	SOC_DAPM_ENUM("Route", adav80x_capture_enum);
static const struct snd_kcontrol_new adav80x_dac_mux_ctrl =
	SOC_DAPM_ENUM("Route", adav80x_dac_enum);

#define ADAV80X_MUX(name, ctrl) \
	SND_SOC_DAPM_MUX(name, SND_SOC_NOPM, 0, 0, ctrl)

static const struct snd_soc_dapm_widget adav80x_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("DAC", NULL, ADAV80X_DAC_CTRL1, 7, 1),
	SND_SOC_DAPM_ADC("ADC", NULL, ADAV80X_ADC_CTRL1, 5, 1),

	SND_SOC_DAPM_PGA("Right PGA", ADAV80X_ADC_CTRL1, 0, 1, NULL, 0),
	SND_SOC_DAPM_PGA("Left PGA", ADAV80X_ADC_CTRL1, 1, 1, NULL, 0),

	SND_SOC_DAPM_AIF_OUT("AIFOUT", "HiFi Capture", 0, SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_AIF_IN("AIFIN", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0),

	SND_SOC_DAPM_AIF_OUT("AIFAUXOUT", "Aux Capture", 0, SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_AIF_IN("AIFAUXIN", "Aux Playback", 0, SND_SOC_NOPM, 0, 0),

	ADAV80X_MUX("Aux Capture Select", &adav80x_aux_capture_mux_ctrl),
	ADAV80X_MUX("Capture Select", &adav80x_capture_mux_ctrl),
	ADAV80X_MUX("DAC Select", &adav80x_dac_mux_ctrl),

	SND_SOC_DAPM_INPUT("VINR"),
	SND_SOC_DAPM_INPUT("VINL"),
	SND_SOC_DAPM_OUTPUT("VOUTR"),
	SND_SOC_DAPM_OUTPUT("VOUTL"),

	SND_SOC_DAPM_SUPPLY("SYSCLK", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_SUPPLY("PLL1", ADAV80X_PLL_CTRL1, 2, 1, NULL, 0),
	SND_SOC_DAPM_SUPPLY("PLL2", ADAV80X_PLL_CTRL1, 3, 1, NULL, 0),
	SND_SOC_DAPM_SUPPLY("OSC", ADAV80X_PLL_CTRL1, 1, 1, NULL, 0),
};

static int adav80x_dapm_sysclk_check(struct snd_soc_dapm_widget *source,
			 struct snd_soc_dapm_widget *sink)
{
	struct snd_soc_component *component = snd_soc_dapm_to_component(source->dapm);
	struct adav80x *adav80x = snd_soc_component_get_drvdata(component);
	const char *clk;

	switch (adav80x->clk_src) {
	case ADAV80X_CLK_PLL1:
		clk = "PLL1";
		break;
	case ADAV80X_CLK_PLL2:
		clk = "PLL2";
		break;
	case ADAV80X_CLK_XTAL:
		clk = "OSC";
		break;
	default:
		return 0;
	}

Annotation

Implementation Notes