TLV320DAC3203: SW driver and Volume control

Hai Doan76

Part Number: TLV320DAC3203

Hi TI team

When checking for the Linux driver of TLV320DAC3203, I found that can use TLV320AIC32x4 driver, since it is compatible with.
For more details, I'd like to check how exactly it is compatible, and what need to do in SW side to use the new part in an embedded Linux board. I'm using it with NXP iMX8 and Yocto.

Secondly, is it possible to implement SW volume control with this TLV320DAC3203?

Thanks.

over 1 year ago

0 Shenghao Ding over 1 year ago

TI__Genius 11510 points

Volume registers are slightly different.

Left DAC Channel Digital Volume Control Register: P0x00R0x41

Right DAC Channel Digital Volume Control Register: P0x00R0x42

INL to HPL Volume Control Register: P0x01R0x16

INR to HPR Volume Control Register: P0x01R0x17

In tlv320aic32x4.c, there's the examples

static DECLARE_TLV_DB_SCALE(tlv_step_0_5, 0, 50, 0);
/* -63.5dB min, 0.5dB steps */
static DECLARE_TLV_DB_SCALE(tlv_pcm, -6350, 50, 0);
/* -6dB min, 1dB steps */
static DECLARE_TLV_DB_SCALE(tlv_driver_gain, -600, 100, 0);
/* -12dB min, 0.5dB steps */
static DECLARE_TLV_DB_SCALE(tlv_adc_vol, -1200, 50, 0);
/* -6dB min, 1dB steps */
static DECLARE_TLV_DB_SCALE(tlv_tas_driver_gain, -5850, 50, 0);
static DECLARE_TLV_DB_SCALE(tlv_amp_vol, 0, 600, 1);

SOC_DOUBLE_R_S_TLV("PCM Playback Volume", AIC32X4_LDACVOL,
			AIC32X4_RDACVOL, 0, -0x7f, 0x30, 7, 0, tlv_pcm),

SOC_DOUBLE_R_S_TLV("HP Driver Gain Volume", AIC32X4_HPLGAIN,
			AIC32X4_HPRGAIN, 0, -0x6, 0x1d, 5, 0,
			tlv_driver_gain),
	SOC_DOUBLE_R_S_TLV("LO Driver Gain Volume", AIC32X4_LOLGAIN,
			AIC32X4_LORGAIN, 0, -0x6, 0x1d, 5, 0,
			tlv_driver_gain),

SOC_DOUBLE_R_S_TLV("ADC Level Volume", AIC32X4_LADCVOL,
			AIC32X4_RADCVOL, 0, -0x18, 0x28, 6, 0, tlv_adc_vol),
	SOC_DOUBLE_R_TLV("PGA Level Volume", AIC32X4_LMICPGAVOL,
			AIC32X4_RMICPGAVOL, 0, 0x5f, 0, tlv_step_0_5),
Add similar Kcontrol into the code.

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TLV320DAC3203: SW driver and Volume control