sound/soc/codecs/ad193x.c
Source file repositories/reference/linux-study-clean/sound/soc/codecs/ad193x.c
File Facts
- System
- Linux kernel
- Corpus path
sound/soc/codecs/ad193x.c- Extension
.c- Size
- 15498 bytes
- Lines
- 561
- 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.
- 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.
- Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
- Allocates kernel memory; connect allocation flags and lifetime to context constraints.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/module.hlinux/kernel.hlinux/device.hlinux/regmap.hlinux/slab.hsound/core.hsound/pcm.hsound/pcm_params.hsound/initval.hsound/soc.hsound/tlv.had193x.h
Detected Declarations
struct ad193x_privfunction ad193x_check_pllfunction ad193x_has_adcfunction ad193x_mutefunction ad193x_set_tdm_slotfunction ad193x_set_dai_fmtfunction ad193x_set_dai_sysclkfunction ad193x_hw_paramsfunction ad193x_startupfunction ad193x_reg_default_initfunction ad193x_component_probefunction ad193x_probeexport ad193x_regmap_configexport ad193x_probe
Annotated Snippet
struct ad193x_priv {
struct regmap *regmap;
enum ad193x_type type;
int sysclk;
};
/*
* AD193X volume/mute/de-emphasis etc. controls
*/
static const char * const ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
static SOC_ENUM_SINGLE_DECL(ad193x_deemp_enum, AD193X_DAC_CTRL2, 1,
ad193x_deemp);
static const DECLARE_TLV_DB_MINMAX(adau193x_tlv, -9563, 0);
static const unsigned int ad193x_sb[] = {32};
static struct snd_pcm_hw_constraint_list constr = {
.list = ad193x_sb,
.count = ARRAY_SIZE(ad193x_sb),
};
static const struct snd_kcontrol_new ad193x_snd_controls[] = {
/* DAC volume control */
SOC_DOUBLE_R_TLV("DAC1 Volume", AD193X_DAC_L1_VOL,
AD193X_DAC_R1_VOL, 0, 0xFF, 1, adau193x_tlv),
SOC_DOUBLE_R_TLV("DAC2 Volume", AD193X_DAC_L2_VOL,
AD193X_DAC_R2_VOL, 0, 0xFF, 1, adau193x_tlv),
SOC_DOUBLE_R_TLV("DAC3 Volume", AD193X_DAC_L3_VOL,
AD193X_DAC_R3_VOL, 0, 0xFF, 1, adau193x_tlv),
SOC_DOUBLE_R_TLV("DAC4 Volume", AD193X_DAC_L4_VOL,
AD193X_DAC_R4_VOL, 0, 0xFF, 1, adau193x_tlv),
/* DAC switch control */
SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
AD193X_DACR1_MUTE, 1, 1),
SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
AD193X_DACR2_MUTE, 1, 1),
SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
AD193X_DACR3_MUTE, 1, 1),
SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
AD193X_DACR4_MUTE, 1, 1),
/* DAC de-emphasis */
SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
};
static const struct snd_kcontrol_new ad193x_adc_snd_controls[] = {
/* ADC switch control */
SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
AD193X_ADCR1_MUTE, 1, 1),
SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
AD193X_ADCR2_MUTE, 1, 1),
/* ADC high-pass filter */
SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
AD193X_ADC_HIGHPASS_FILTER, 1, 0),
};
static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_PGA("DAC Output", AD193X_DAC_CTRL0, 0, 1, NULL, 0),
SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
SND_SOC_DAPM_SUPPLY("SYSCLK", AD193X_PLL_CLK_CTRL0, 7, 0, NULL, 0),
SND_SOC_DAPM_VMID("VMID"),
SND_SOC_DAPM_OUTPUT("DAC1OUT"),
SND_SOC_DAPM_OUTPUT("DAC2OUT"),
SND_SOC_DAPM_OUTPUT("DAC3OUT"),
SND_SOC_DAPM_OUTPUT("DAC4OUT"),
};
static const struct snd_soc_dapm_widget ad193x_adc_widgets[] = {
SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
SND_SOC_DAPM_INPUT("ADC1IN"),
SND_SOC_DAPM_INPUT("ADC2IN"),
};
static int ad193x_check_pll(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 ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
return !!ad193x->sysclk;
}
static const struct snd_soc_dapm_route audio_paths[] = {
{ "DAC", NULL, "SYSCLK" },
Annotation
- Immediate include surface: `linux/module.h`, `linux/kernel.h`, `linux/device.h`, `linux/regmap.h`, `linux/slab.h`, `sound/core.h`, `sound/pcm.h`, `sound/pcm_params.h`.
- Detected declarations: `struct ad193x_priv`, `function ad193x_check_pll`, `function ad193x_has_adc`, `function ad193x_mute`, `function ad193x_set_tdm_slot`, `function ad193x_set_dai_fmt`, `function ad193x_set_dai_sysclk`, `function ad193x_hw_params`, `function ad193x_startup`, `function ad193x_reg_default_init`.
- Atlas domain: Driver Families / sound/soc.
- Implementation status: integration implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.