sound/soc/codecs/tas2562.c

Source file repositories/reference/linux-study-clean/sound/soc/codecs/tas2562.c

File Facts

System: Linux kernel
Corpus path: sound/soc/codecs/tas2562.c
Extension: .c
Size: 20814 bytes
Lines: 782
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/errno.h
linux/device.h
linux/i2c.h
linux/regmap.h
linux/slab.h
linux/gpio/consumer.h
linux/regulator/consumer.h
linux/delay.h
sound/pcm.h
sound/pcm_params.h
sound/soc.h
sound/soc-dapm.h
sound/tlv.h
tas2562.h

Detected Declarations

struct tas2562_data
enum tas256x_model
function tas2562_set_samplerate
function tas2562_set_dai_tdm_slot
function tas2562_set_bitwidth
function tas2562_hw_params
function tas2562_set_dai_fmt
function tas2562_update_pwr_ctrl
function tas2562_mute
function tas2562_codec_probe
function tas2562_suspend
function tas2562_resume
function tas2562_dac_event
function tas2562_volume_control_get
function tas2562_volume_control_put
function tas2562_parse_dt
function tas2562_probe

Annotated Snippet

struct tas2562_data {
	struct snd_soc_component *component;
	struct gpio_desc *sdz_gpio;
	struct regmap *regmap;
	struct device *dev;
	struct i2c_client *client;
	int v_sense_slot;
	int i_sense_slot;
	int volume_lvl;
	int model_id;
	bool dac_powered;
	bool unmuted;
};

enum tas256x_model {
	TAS2562,
	TAS2564,
	TAS2110,
};

static int tas2562_set_samplerate(struct tas2562_data *tas2562, int samplerate)
{
	int samp_rate;
	int ramp_rate;

	switch (samplerate) {
	case 7350:
		ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_7305_8KHZ;
		break;
	case 8000:
		ramp_rate = 0;
		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_7305_8KHZ;
		break;
	case 14700:
		ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_14_7_16KHZ;
		break;
	case 16000:
		ramp_rate = 0;
		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_14_7_16KHZ;
		break;
	case 22050:
		ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_22_05_24KHZ;
		break;
	case 24000:
		ramp_rate = 0;
		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_22_05_24KHZ;
		break;
	case 29400:
		ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_29_4_32KHZ;
		break;
	case 32000:
		ramp_rate = 0;
		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_29_4_32KHZ;
		break;
	case 44100:
		ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_44_1_48KHZ;
		break;
	case 48000:
		ramp_rate = 0;
		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_44_1_48KHZ;
		break;
	case 88200:
		ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_88_2_96KHZ;
		break;
	case 96000:
		ramp_rate = 0;
		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_88_2_96KHZ;
		break;
	case 176400:
		ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_176_4_192KHZ;
		break;
	case 192000:
		ramp_rate = 0;
		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_176_4_192KHZ;
		break;
	default:
		dev_info(tas2562->dev, "%s, unsupported sample rate, %d\n",
			__func__, samplerate);
		return -EINVAL;
	}

	snd_soc_component_update_bits(tas2562->component, TAS2562_TDM_CFG0,
		TAS2562_TDM_CFG0_RAMPRATE_MASK,	ramp_rate);

Annotation

Immediate include surface: `linux/module.h`, `linux/errno.h`, `linux/device.h`, `linux/i2c.h`, `linux/regmap.h`, `linux/slab.h`, `linux/gpio/consumer.h`, `linux/regulator/consumer.h`.
Detected declarations: `struct tas2562_data`, `enum tas256x_model`, `function tas2562_set_samplerate`, `function tas2562_set_dai_tdm_slot`, `function tas2562_set_bitwidth`, `function tas2562_hw_params`, `function tas2562_set_dai_fmt`, `function tas2562_update_pwr_ctrl`, `function tas2562_mute`, `function tas2562_codec_probe`.
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.