sound/soc/codecs/rt298.c

Source file repositories/reference/linux-study-clean/sound/soc/codecs/rt298.c

File Facts

System: Linux kernel
Corpus path: sound/soc/codecs/rt298.c
Extension: .c
Size: 34432 bytes
Lines: 1315
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.
Touches IRQ or DMA behavior; this matters for the representative real-device path.
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/init.h
linux/delay.h
linux/pm.h
linux/i2c.h
linux/platform_device.h
linux/spi/spi.h
linux/dmi.h
linux/acpi.h
sound/core.h
sound/pcm.h
sound/pcm_params.h
sound/soc.h
sound/soc-dapm.h
sound/initval.h
sound/tlv.h
sound/jack.h
linux/workqueue.h
sound/rt298.h
rl6347a.h
rt298.h

Detected Declarations

struct rt298_priv
function rt298_volatile_register
function rt298_readable_register
function rt298_index_sync
function rt298_jack_detect
function rt298_jack_detect_work
function rt298_mic_detect
function is_mclk_mode
function rt298_spk_event
function rt298_set_dmic1_event
function rt298_adc_event
function rt298_mic1_event
function rt298_hw_params
function rt298_set_dai_fmt
function rt298_set_dai_sysclk
function rt298_set_bclk_ratio
function rt298_set_bias_level
function rt298_irq
function rt298_probe
function rt298_remove
function rt298_suspend
function rt298_resume
function rt298_i2c_probe

Annotated Snippet

struct rt298_priv {
	struct reg_default *index_cache;
	int index_cache_size;
	struct regmap *regmap;
	struct snd_soc_component *component;
	struct rt298_platform_data pdata;
	struct i2c_client *i2c;
	struct snd_soc_jack *jack;
	struct delayed_work jack_detect_work;
	int sys_clk;
	int clk_id;
	int is_hp_in;
};

static const struct reg_default rt298_index_def[] = {
	{ 0x01, 0xa5a8 },
	{ 0x02, 0x8e95 },
	{ 0x03, 0x0002 },
	{ 0x04, 0xaf67 },
	{ 0x08, 0x200f },
	{ 0x09, 0xd010 },
	{ 0x0a, 0x0100 },
	{ 0x0b, 0x0000 },
	{ 0x0d, 0x2800 },
	{ 0x0f, 0x0022 },
	{ 0x19, 0x0217 },
	{ 0x20, 0x0020 },
	{ 0x33, 0x0208 },
	{ 0x46, 0x0300 },
	{ 0x49, 0x4004 },
	{ 0x4f, 0x50c9 },
	{ 0x50, 0x3000 },
	{ 0x63, 0x1b02 },
	{ 0x67, 0x1111 },
	{ 0x68, 0x1016 },
	{ 0x69, 0x273f },
};
#define INDEX_CACHE_SIZE ARRAY_SIZE(rt298_index_def)

static const struct reg_default rt298_reg[] = {
	{ 0x00170500, 0x00000400 },
	{ 0x00220000, 0x00000031 },
	{ 0x00239000, 0x0000007f },
	{ 0x0023a000, 0x0000007f },
	{ 0x00270500, 0x00000400 },
	{ 0x00370500, 0x00000400 },
	{ 0x00870500, 0x00000400 },
	{ 0x00920000, 0x00000031 },
	{ 0x00935000, 0x000000c3 },
	{ 0x00936000, 0x000000c3 },
	{ 0x00970500, 0x00000400 },
	{ 0x00b37000, 0x00000097 },
	{ 0x00b37200, 0x00000097 },
	{ 0x00b37300, 0x00000097 },
	{ 0x00c37000, 0x00000000 },
	{ 0x00c37100, 0x00000080 },
	{ 0x01270500, 0x00000400 },
	{ 0x01370500, 0x00000400 },
	{ 0x01371f00, 0x411111f0 },
	{ 0x01439000, 0x00000080 },
	{ 0x0143a000, 0x00000080 },
	{ 0x01470700, 0x00000000 },
	{ 0x01470500, 0x00000400 },
	{ 0x01470c00, 0x00000000 },
	{ 0x01470100, 0x00000000 },
	{ 0x01837000, 0x00000000 },
	{ 0x01870500, 0x00000400 },
	{ 0x02050000, 0x00000000 },
	{ 0x02139000, 0x00000080 },
	{ 0x0213a000, 0x00000080 },
	{ 0x02170100, 0x00000000 },
	{ 0x02170500, 0x00000400 },
	{ 0x02170700, 0x00000000 },
	{ 0x02270100, 0x00000000 },
	{ 0x02370100, 0x00000000 },
	{ 0x01870700, 0x00000020 },
	{ 0x00830000, 0x000000c3 },
	{ 0x00930000, 0x000000c3 },
	{ 0x01270700, 0x00000000 },
};

static bool rt298_volatile_register(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case 0 ... 0xff:
	case RT298_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID):
	case RT298_GET_HP_SENSE:
	case RT298_GET_MIC1_SENSE:
	case RT298_PROC_COEF:
	case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT298_MIC1, 0):

Annotation

Immediate include surface: `linux/module.h`, `linux/moduleparam.h`, `linux/init.h`, `linux/delay.h`, `linux/pm.h`, `linux/i2c.h`, `linux/platform_device.h`, `linux/spi/spi.h`.
Detected declarations: `struct rt298_priv`, `function rt298_volatile_register`, `function rt298_readable_register`, `function rt298_index_sync`, `function rt298_jack_detect`, `function rt298_jack_detect_work`, `function rt298_mic_detect`, `function is_mclk_mode`, `function rt298_spk_event`, `function rt298_set_dmic1_event`.
Atlas domain: Driver Families / sound/soc.
Implementation status: source implementation candidate.
IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.