sound/soc/codecs/max98373.c

Source file repositories/reference/linux-study-clean/sound/soc/codecs/max98373.c

File Facts

System
Linux kernel
Corpus path
sound/soc/codecs/max98373.c
Extension
.c
Size
18170 bytes
Lines
511
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 (mc->reg == max98373->cache[i].reg) {
				ucontrol->value.integer.value[0] = max98373->cache[i].val;
				return 0;
			}
		}
	}

	return snd_soc_get_volsw(kcontrol, ucontrol);
}

static const struct snd_kcontrol_new max98373_snd_controls[] = {
SOC_SINGLE("Digital Vol Sel Switch", MAX98373_R203F_AMP_DSP_CFG,
	MAX98373_AMP_VOL_SEL_SHIFT, 1, 0),
SOC_SINGLE("Volume Location Switch", MAX98373_R203F_AMP_DSP_CFG,
	MAX98373_AMP_VOL_SEL_SHIFT, 1, 0),
SOC_SINGLE("Ramp Up Switch", MAX98373_R203F_AMP_DSP_CFG,
	MAX98373_AMP_DSP_CFG_RMP_UP_SHIFT, 1, 0),
SOC_SINGLE("Ramp Down Switch", MAX98373_R203F_AMP_DSP_CFG,
	MAX98373_AMP_DSP_CFG_RMP_DN_SHIFT, 1, 0),
/* Speaker Amplifier Overcurrent Automatic Restart Enable */
SOC_SINGLE("OVC Autorestart Switch", MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG,
	MAX98373_OVC_AUTORESTART_SHIFT, 1, 0),
/* Thermal Shutdown Automatic Restart Enable */
SOC_SINGLE("THERM Autorestart Switch", MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG,
	MAX98373_THERM_AUTORESTART_SHIFT, 1, 0),
/* Clock Monitor Automatic Restart Enable */
SOC_SINGLE("CMON Autorestart Switch", MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG,
	MAX98373_CMON_AUTORESTART_SHIFT, 1, 0),
SOC_SINGLE("CLK Monitor Switch", MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG,
	MAX98373_CLOCK_MON_SHIFT, 1, 0),
SOC_SINGLE("Dither Switch", MAX98373_R203F_AMP_DSP_CFG,
	MAX98373_AMP_DSP_CFG_DITH_SHIFT, 1, 0),
SOC_SINGLE("DC Blocker Switch", MAX98373_R203F_AMP_DSP_CFG,
	MAX98373_AMP_DSP_CFG_DCBLK_SHIFT, 1, 0),
SOC_SINGLE_TLV("Digital Volume", MAX98373_R203D_AMP_DIG_VOL_CTRL,
	0, 0x7F, 1, max98373_digital_tlv),
SOC_SINGLE_TLV("Speaker Volume", MAX98373_R203E_AMP_PATH_GAIN,
	MAX98373_SPK_DIGI_GAIN_SHIFT, 10, 0, max98373_spk_tlv),
SOC_SINGLE_TLV("FS Max Volume", MAX98373_R203E_AMP_PATH_GAIN,
	MAX98373_FS_GAIN_MAX_SHIFT, 9, 0, max98373_spkgain_max_tlv),
SOC_ENUM("Output Voltage", max98373_out_volt_enum),
/* Dynamic Headroom Tracking */
SOC_SINGLE("DHT Switch", MAX98373_R20D4_DHT_EN,
	MAX98373_DHT_EN_SHIFT, 1, 0),
SOC_SINGLE_TLV("DHT Min Volume", MAX98373_R20D1_DHT_CFG,
	MAX98373_DHT_SPK_GAIN_MIN_SHIFT, 9, 0, max98373_dht_spkgain_min_tlv),
SOC_SINGLE_TLV("DHT Rot Pnt Volume", MAX98373_R20D1_DHT_CFG,
	MAX98373_DHT_ROT_PNT_SHIFT, 15, 1, max98373_dht_rotation_point_tlv),
SOC_SINGLE_TLV("DHT Attack Step Volume", MAX98373_R20D2_DHT_ATTACK_CFG,
	MAX98373_DHT_ATTACK_STEP_SHIFT, 4, 0, max98373_dht_step_size_tlv),
SOC_SINGLE_TLV("DHT Release Step Volume", MAX98373_R20D3_DHT_RELEASE_CFG,
	MAX98373_DHT_RELEASE_STEP_SHIFT, 4, 0, max98373_dht_step_size_tlv),
SOC_ENUM("DHT Attack Rate", max98373_dht_attack_rate_enum),
SOC_ENUM("DHT Release Rate", max98373_dht_release_rate_enum),
/* ADC configuration */
SOC_SINGLE("ADC PVDD CH Switch", MAX98373_R2056_MEAS_ADC_PVDD_CH_EN, 0, 1, 0),
SOC_SINGLE("ADC PVDD FLT Switch", MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG,
	MAX98373_FLT_EN_SHIFT, 1, 0),
SOC_SINGLE("ADC TEMP FLT Switch", MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG,
	MAX98373_FLT_EN_SHIFT, 1, 0),
SOC_SINGLE_EXT("ADC PVDD", MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK, 0, 0xFF, 0,
	max98373_feedback_get, NULL),
SOC_SINGLE_EXT("ADC TEMP", MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK, 0, 0xFF, 0,
	max98373_feedback_get, NULL),
SOC_SINGLE("ADC PVDD FLT Coeff", MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG,
	0, 0x3, 0),
SOC_SINGLE("ADC TEMP FLT Coeff", MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG,
	0, 0x3, 0),
SOC_ENUM("ADC SampleRate", max98373_adc_samplerate_enum),
/* Brownout Detection Engine */
SOC_SINGLE("BDE Switch", MAX98373_R20B5_BDE_EN, MAX98373_BDE_EN_SHIFT, 1, 0),
SOC_SINGLE("BDE LVL4 Mute Switch", MAX98373_R20B2_BDE_L4_CFG_2,
	MAX98373_LVL4_MUTE_EN_SHIFT, 1, 0),
SOC_SINGLE("BDE LVL4 Hold Switch", MAX98373_R20B2_BDE_L4_CFG_2,
	MAX98373_LVL4_HOLD_EN_SHIFT, 1, 0),
SOC_SINGLE("BDE LVL1 Thresh", MAX98373_R2097_BDE_L1_THRESH, 0, 0xFF, 0),
SOC_SINGLE("BDE LVL2 Thresh", MAX98373_R2098_BDE_L2_THRESH, 0, 0xFF, 0),
SOC_SINGLE("BDE LVL3 Thresh", MAX98373_R2099_BDE_L3_THRESH, 0, 0xFF, 0),
SOC_SINGLE("BDE LVL4 Thresh", MAX98373_R209A_BDE_L4_THRESH, 0, 0xFF, 0),
SOC_SINGLE_EXT("BDE Active Level", MAX98373_R20B6_BDE_CUR_STATE_READBACK, 0, 8, 0,
	max98373_feedback_get, NULL),
SOC_SINGLE("BDE Clip Mode Switch", MAX98373_R2092_BDE_CLIPPER_MODE, 0, 1, 0),
SOC_SINGLE("BDE Thresh Hysteresis", MAX98373_R209B_BDE_THRESH_HYST, 0, 0xFF, 0),
SOC_SINGLE("BDE Hold Time", MAX98373_R2090_BDE_LVL_HOLD, 0, 0xFF, 0),
SOC_SINGLE("BDE Attack Rate", MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 4, 0xF, 0),
SOC_SINGLE("BDE Release Rate", MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 0, 0xF, 0),
SOC_SINGLE_TLV("BDE LVL1 Clip Thresh Volume", MAX98373_R20A9_BDE_L1_CFG_2,
	0, 0x3C, 1, max98373_bde_gain_tlv),
SOC_SINGLE_TLV("BDE LVL2 Clip Thresh Volume", MAX98373_R20AC_BDE_L2_CFG_2,
	0, 0x3C, 1, max98373_bde_gain_tlv),

Annotation

Implementation Notes