DA7212 codec

Audio codec: Dialog DA7212, playing to its line output. More...

Data Structures
struct	pbl_audio_da7212
	DA7212 codec. More...

Macros
#define	PBL_AUDIO_DA7212_DEFINE(sym, _name, _bus, _addr, _vdd)
	Define a DA7212 codec.

Detailed Description

Audio codec: Dialog DA7212, playing to its line output.

The codec runs its PLL from a 4 MHz master clock on the link and is the I2S master, deriving an exact 16 kHz frame clock. Its DAC gain runs from -78 to +12 dB in 0.75 dB steps.

PBL_AUDIO_DA7212_DEFINE(s_da7212, "da7212", &s_i2c.bus, 0x1a, &s_ldo.reg);
static const struct pbl_audio_link s_speaker_link = {
  .codec = &s_da7212.codec,
  .fmt = PBL_AUDIO_FMT_I2S | PBL_AUDIO_FMT_CODEC_MASTER,
};

---

Data Structure Documentation

pbl_audio_da7212

struct pbl_audio_da7212

DA7212 codec.

Data Fields
struct pbl_audio_codec	codec	Codec.
struct pbl_i2c_dev	i2c	Control port.
const struct pbl_regulator *	vdd	Supply of the digital and analogue circuits, to reset the codec if needed.

Macro Definition Documentation

PBL_AUDIO_DA7212_DEFINE

#define PBL_AUDIO_DA7212_DEFINE	(		sym,
			_name,
			_bus,
			_addr,
			_vdd
	)

Value:

  PBL_DEVICE_STATE_DEFINE(sym);                                                             \
  static const struct pbl_audio_da7212 sym = {                                              \
    .codec =                                                                                \
        {                                                                                   \
          .dev = PBL_DEVICE_INIT(sym, _name, pbl_audio_da7212_init, &(_bus)->dev, nullptr), \
          .ops = &pbl_audio_da7212_ops,                                                     \
        },                                                                                  \
    .i2c = PBL_I2C_DEV(_bus, _addr),                                                        \
    .vdd = (_vdd),                                                                          \
  };                                                                                        \
  PBL_DEVICE_REGISTER(sym, &sym.codec.dev)

Define a DA7212 codec.

Parameters

sym	Symbol of the codec.
_name	Device name.
_bus	I2C bus.
_addr	7-bit I2C address.
_vdd	Supply of the digital and analogue circuits, always on.