sound/soc/codecs/rk3308_codec.c

Source file repositories/reference/linux-study-clean/sound/soc/codecs/rk3308_codec.c

File Facts

System
Linux kernel
Corpus path
sound/soc/codecs/rk3308_codec.c
Extension
.c
Size
35668 bytes
Lines
976
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct rk3308_codec_priv {
	const struct device *dev;
	struct regmap *regmap;
	struct regmap *grf;
	struct reset_control *reset;
	struct clk *hclk;
	struct clk *mclk_rx;
	struct clk *mclk_tx;
	struct snd_soc_component *component;
	unsigned char codec_ver;
};

static struct clk_bulk_data rk3308_codec_clocks[] = {
	{ .id = "hclk" },
	{ .id = "mclk_rx" },
	{ .id = "mclk_tx" },
};

static const DECLARE_TLV_DB_SCALE(rk3308_codec_adc_alc_gain_tlv,   -1800, 150, 0);
static const DECLARE_TLV_DB_SCALE(rk3308_codec_dac_hpout_gain_tlv, -3900, 150, 0);
static const DECLARE_TLV_DB_SCALE(rk3308_codec_dac_hpmix_gain_tlv,  -600, 600, 0);

static const DECLARE_TLV_DB_RANGE(rk3308_codec_dac_lineout_gain_tlv,
	0, 0, TLV_DB_SCALE_ITEM(-600, 0, 0),
	1, 1, TLV_DB_SCALE_ITEM(-300, 0, 0),
	2, 2, TLV_DB_SCALE_ITEM(-150, 0, 0),
	3, 3, TLV_DB_SCALE_ITEM(0,    0, 0),
);

static const char * const rk3308_codec_hpf_cutoff_text[] = {
	"20 Hz", "245 Hz", "612 Hz"
};

static SOC_ENUM_SINGLE_DECL(rk3308_codec_hpf_cutoff_enum12, RK3308_ADC_DIG_CON04(0), 0,
			    rk3308_codec_hpf_cutoff_text);
static SOC_ENUM_SINGLE_DECL(rk3308_codec_hpf_cutoff_enum34, RK3308_ADC_DIG_CON04(1), 0,
			    rk3308_codec_hpf_cutoff_text);
static SOC_ENUM_SINGLE_DECL(rk3308_codec_hpf_cutoff_enum56, RK3308_ADC_DIG_CON04(2), 0,
			    rk3308_codec_hpf_cutoff_text);
static SOC_ENUM_SINGLE_DECL(rk3308_codec_hpf_cutoff_enum78, RK3308_ADC_DIG_CON04(3), 0,
			    rk3308_codec_hpf_cutoff_text);

static const struct snd_kcontrol_new rk3308_codec_controls[] = {
	/* Despite the register names, these set the gain when AGC is OFF */
	SOC_SINGLE_RANGE_TLV("MIC1 Capture Volume",
			     RK3308_ADC_ANA_CON03(0),
			     RK3308_ADC_CH1_ALC_GAIN_SFT,
			     RK3308_ADC_CH1_ALC_GAIN_MIN,
			     RK3308_ADC_CH1_ALC_GAIN_MAX,
			     0, rk3308_codec_adc_alc_gain_tlv),
	SOC_SINGLE_RANGE_TLV("MIC2 Capture Volume",
			     RK3308_ADC_ANA_CON04(0),
			     RK3308_ADC_CH2_ALC_GAIN_SFT,
			     RK3308_ADC_CH2_ALC_GAIN_MIN,
			     RK3308_ADC_CH2_ALC_GAIN_MAX,
			     0, rk3308_codec_adc_alc_gain_tlv),
	SOC_SINGLE_RANGE_TLV("MIC3 Capture Volume",
			     RK3308_ADC_ANA_CON03(1),
			     RK3308_ADC_CH1_ALC_GAIN_SFT,
			     RK3308_ADC_CH1_ALC_GAIN_MIN,
			     RK3308_ADC_CH1_ALC_GAIN_MAX,
			     0, rk3308_codec_adc_alc_gain_tlv),
	SOC_SINGLE_RANGE_TLV("MIC4 Capture Volume",
			     RK3308_ADC_ANA_CON04(1),
			     RK3308_ADC_CH2_ALC_GAIN_SFT,
			     RK3308_ADC_CH2_ALC_GAIN_MIN,
			     RK3308_ADC_CH2_ALC_GAIN_MAX,
			     0, rk3308_codec_adc_alc_gain_tlv),
	SOC_SINGLE_RANGE_TLV("MIC5 Capture Volume",
			     RK3308_ADC_ANA_CON03(2),
			     RK3308_ADC_CH1_ALC_GAIN_SFT,
			     RK3308_ADC_CH1_ALC_GAIN_MIN,
			     RK3308_ADC_CH1_ALC_GAIN_MAX,
			     0, rk3308_codec_adc_alc_gain_tlv),
	SOC_SINGLE_RANGE_TLV("MIC6 Capture Volume",
			     RK3308_ADC_ANA_CON04(2),
			     RK3308_ADC_CH2_ALC_GAIN_SFT,
			     RK3308_ADC_CH2_ALC_GAIN_MIN,
			     RK3308_ADC_CH2_ALC_GAIN_MAX,
			     0, rk3308_codec_adc_alc_gain_tlv),
	SOC_SINGLE_RANGE_TLV("MIC7 Capture Volume",
			     RK3308_ADC_ANA_CON03(3),
			     RK3308_ADC_CH1_ALC_GAIN_SFT,
			     RK3308_ADC_CH1_ALC_GAIN_MIN,
			     RK3308_ADC_CH1_ALC_GAIN_MAX,
			     0, rk3308_codec_adc_alc_gain_tlv),
	SOC_SINGLE_RANGE_TLV("MIC8 Capture Volume",
			     RK3308_ADC_ANA_CON04(3),
			     RK3308_ADC_CH2_ALC_GAIN_SFT,
			     RK3308_ADC_CH2_ALC_GAIN_MIN,

Annotation

Implementation Notes