sound/soc/codecs/lm49453.c

Source file repositories/reference/linux-study-clean/sound/soc/codecs/lm49453.c

File Facts

System: Linux kernel
Corpus path: sound/soc/codecs/lm49453.c
Extension: .c
Size: 53045 bytes
Lines: 1464
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.

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.
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.h
linux/moduleparam.h
linux/kernel.h
linux/init.h
linux/delay.h
linux/pm.h
linux/i2c.h
linux/regmap.h
linux/slab.h
sound/core.h
sound/pcm.h
sound/pcm_params.h
sound/soc.h
sound/soc-dapm.h
sound/tlv.h
sound/jack.h
sound/initval.h
asm/div64.h
lm49453.h

Detected Declarations

struct lm49453_priv
function lm49453_hw_params
function lm49453_set_dai_fmt
function lm49453_set_dai_sysclk
function lm49453_hp_mute
function lm49453_lo_mute
function lm49453_ls_mute
function lm49453_ep_mute
function lm49453_ha_mute
function lm49453_set_bias_level
function lm49453_i2c_probe

Annotated Snippet

struct lm49453_priv {
	struct regmap *regmap;
};

/* capture path controls */

static const char *lm49453_mic2mode_text[] = {"Single Ended", "Differential"};

static SOC_ENUM_SINGLE_DECL(lm49453_mic2mode_enum, LM49453_P0_MICR_REG, 5,
			    lm49453_mic2mode_text);

static const char *lm49453_dmic_cfg_text[] = {"DMICDAT1", "DMICDAT2"};

static SOC_ENUM_SINGLE_DECL(lm49453_dmic12_cfg_enum,
			    LM49453_P0_DIGITAL_MIC1_CONFIG_REG, 7,
			    lm49453_dmic_cfg_text);

static SOC_ENUM_SINGLE_DECL(lm49453_dmic34_cfg_enum,
			    LM49453_P0_DIGITAL_MIC2_CONFIG_REG, 7,
			    lm49453_dmic_cfg_text);

/* MUX Controls */
static const char *lm49453_adcl_mux_text[] = { "MIC1", "Aux_L" };

static const char *lm49453_adcr_mux_text[] = { "MIC2", "Aux_R" };

static SOC_ENUM_SINGLE_DECL(lm49453_adcl_enum,
			    LM49453_P0_ANALOG_MIXER_ADC_REG, 0,
			    lm49453_adcl_mux_text);

static SOC_ENUM_SINGLE_DECL(lm49453_adcr_enum,
			    LM49453_P0_ANALOG_MIXER_ADC_REG, 1,
			    lm49453_adcr_mux_text);

static const struct snd_kcontrol_new lm49453_adcl_mux_control =
	SOC_DAPM_ENUM("ADC Left Mux", lm49453_adcl_enum);

static const struct snd_kcontrol_new lm49453_adcr_mux_control =
	SOC_DAPM_ENUM("ADC Right Mux", lm49453_adcr_enum);

static const struct snd_kcontrol_new lm49453_headset_left_mixer[] = {
SOC_DAPM_SINGLE("Port1_1 Switch", LM49453_P0_DACHPL1_REG, 0, 1, 0),
SOC_DAPM_SINGLE("Port1_2 Switch", LM49453_P0_DACHPL1_REG, 1, 1, 0),
SOC_DAPM_SINGLE("Port1_3 Switch", LM49453_P0_DACHPL1_REG, 2, 1, 0),
SOC_DAPM_SINGLE("Port1_4 Switch", LM49453_P0_DACHPL1_REG, 3, 1, 0),
SOC_DAPM_SINGLE("Port1_5 Switch", LM49453_P0_DACHPL1_REG, 4, 1, 0),
SOC_DAPM_SINGLE("Port1_6 Switch", LM49453_P0_DACHPL1_REG, 5, 1, 0),
SOC_DAPM_SINGLE("Port1_7 Switch", LM49453_P0_DACHPL1_REG, 6, 1, 0),
SOC_DAPM_SINGLE("Port1_8 Switch", LM49453_P0_DACHPL1_REG, 7, 1, 0),
SOC_DAPM_SINGLE("DMIC1L Switch", LM49453_P0_DACHPL2_REG, 0, 1, 0),
SOC_DAPM_SINGLE("DMIC1R Switch", LM49453_P0_DACHPL2_REG, 1, 1, 0),
SOC_DAPM_SINGLE("DMIC2L Switch", LM49453_P0_DACHPL2_REG, 2, 1, 0),
SOC_DAPM_SINGLE("DMIC2R Switch", LM49453_P0_DACHPL2_REG, 3, 1, 0),
SOC_DAPM_SINGLE("ADCL Switch", LM49453_P0_DACHPL2_REG, 4, 1, 0),
SOC_DAPM_SINGLE("ADCR Switch", LM49453_P0_DACHPL2_REG, 5, 1, 0),
SOC_DAPM_SINGLE("Port2_1 Switch", LM49453_P0_DACHPL2_REG, 6, 1, 0),
SOC_DAPM_SINGLE("Port2_2 Switch", LM49453_P0_DACHPL2_REG, 7, 1, 0),
SOC_DAPM_SINGLE("Sidetone Switch", LM49453_P0_STN_SEL_REG, 0, 0, 0),
};

static const struct snd_kcontrol_new lm49453_headset_right_mixer[] = {
SOC_DAPM_SINGLE("Port1_1 Switch", LM49453_P0_DACHPR1_REG, 0, 1, 0),
SOC_DAPM_SINGLE("Port1_2 Switch", LM49453_P0_DACHPR1_REG, 1, 1, 0),
SOC_DAPM_SINGLE("Port1_3 Switch", LM49453_P0_DACHPR1_REG, 2, 1, 0),
SOC_DAPM_SINGLE("Port1_4 Switch", LM49453_P0_DACHPR1_REG, 3, 1, 0),
SOC_DAPM_SINGLE("Port1_5 Switch", LM49453_P0_DACHPR1_REG, 4, 1, 0),
SOC_DAPM_SINGLE("Port1_6 Switch", LM49453_P0_DACHPR1_REG, 5, 1, 0),
SOC_DAPM_SINGLE("Port1_7 Switch", LM49453_P0_DACHPR1_REG, 6, 1, 0),
SOC_DAPM_SINGLE("Port1_8 Switch", LM49453_P0_DACHPR1_REG, 7, 1, 0),
SOC_DAPM_SINGLE("DMIC1L Switch", LM49453_P0_DACHPR2_REG, 0, 1, 0),
SOC_DAPM_SINGLE("DMIC1R Switch", LM49453_P0_DACHPR2_REG, 1, 1, 0),
SOC_DAPM_SINGLE("DMIC2L Switch", LM49453_P0_DACHPR2_REG, 2, 1, 0),
SOC_DAPM_SINGLE("DMIC2R Switch", LM49453_P0_DACHPR2_REG, 3, 1, 0),
SOC_DAPM_SINGLE("ADCL Switch", LM49453_P0_DACHPR2_REG, 4, 1, 0),
SOC_DAPM_SINGLE("ADCR Switch", LM49453_P0_DACHPR2_REG, 5, 1, 0),
SOC_DAPM_SINGLE("Port2_1 Switch", LM49453_P0_DACHPR2_REG, 6, 1, 0),
SOC_DAPM_SINGLE("Port2_2 Switch", LM49453_P0_DACHPR2_REG, 7, 1, 0),
SOC_DAPM_SINGLE("Sidetone Switch", LM49453_P0_STN_SEL_REG, 1, 0, 0),
};

static const struct snd_kcontrol_new lm49453_speaker_left_mixer[] = {
SOC_DAPM_SINGLE("Port1_1 Switch", LM49453_P0_DACLSL1_REG, 0, 1, 0),
SOC_DAPM_SINGLE("Port1_2 Switch", LM49453_P0_DACLSL1_REG, 1, 1, 0),
SOC_DAPM_SINGLE("Port1_3 Switch", LM49453_P0_DACLSL1_REG, 2, 1, 0),
SOC_DAPM_SINGLE("Port1_4 Switch", LM49453_P0_DACLSL1_REG, 3, 1, 0),
SOC_DAPM_SINGLE("Port1_5 Switch", LM49453_P0_DACLSL1_REG, 4, 1, 0),
SOC_DAPM_SINGLE("Port1_6 Switch", LM49453_P0_DACLSL1_REG, 5, 1, 0),
SOC_DAPM_SINGLE("Port1_7 Switch", LM49453_P0_DACLSL1_REG, 6, 1, 0),
SOC_DAPM_SINGLE("Port1_8 Switch", LM49453_P0_DACLSL1_REG, 7, 1, 0),
SOC_DAPM_SINGLE("DMIC1L Switch", LM49453_P0_DACLSL2_REG, 0, 1, 0),

Annotation

Immediate include surface: `linux/module.h`, `linux/moduleparam.h`, `linux/kernel.h`, `linux/init.h`, `linux/delay.h`, `linux/pm.h`, `linux/i2c.h`, `linux/regmap.h`.
Detected declarations: `struct lm49453_priv`, `function lm49453_hw_params`, `function lm49453_set_dai_fmt`, `function lm49453_set_dai_sysclk`, `function lm49453_hp_mute`, `function lm49453_lo_mute`, `function lm49453_ls_mute`, `function lm49453_ep_mute`, `function lm49453_ha_mute`, `function lm49453_set_bias_level`.
Atlas domain: Driver Families / sound/soc.
Implementation status: source 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.