void audiohw_set_prescaler(int value)
{
cscodec_setbits(MSTAVOL, MSTAVOL_VOLUME_MASK,
(-value / 5) << MSTAVOL_VOLUME_SHIFT);
cscodec_setbits(MSTBVOL, MSTBVOL_VOLUME_MASK,
(-value / 5) << MSTBVOL_VOLUME_SHIFT);
}
void audiohw_enable_lineout(bool enable)
{
if (enable)
cscodec_setbits(PWRCTL2, PWRCTL2_PDN_LINA_MASK | PWRCTL2_PDN_LINB_MASK,
PWRCTL2_PDN_LINA_NEVER | PWRCTL2_PDN_LINB_NEVER);
else
cscodec_setbits(PWRCTL2, PWRCTL2_PDN_LINA_MASK | PWRCTL2_PDN_LINB_MASK,
PWRCTL2_PDN_LINA_ALWAYS | PWRCTL2_PDN_LINB_ALWAYS);
}
void audiohw_set_lineout_volume(int vol_l, int vol_r)
{
vol_l = vol_tenthdb2hw(vol_l);
vol_r = vol_tenthdb2hw(vol_r);
cscodec_setbits(LINEACTL, LINEACTL_LINEAVOL_MASK | LINEACTL_LINEAMUTE,
vol_l << LINEACTL_LINEAVOL_SHIFT);
cscodec_setbits(LINEBCTL, LINEBCTL_LINEBVOL_MASK | LINEBCTL_LINEBMUTE,
vol_r << LINEBCTL_LINEBVOL_SHIFT);
}
void audiohw_set_volume(int vol_l, int vol_r)
{
vol_l = vol_tenthdb2hw(vol_l);
vol_r = vol_tenthdb2hw(vol_r);
cscodec_setbits(HPACTL, HPACTL_HPAVOL_MASK | HPACTL_HPAMUTE,
vol_l << HPACTL_HPAVOL_SHIFT);
cscodec_setbits(HPBCTL, HPBCTL_HPBVOL_MASK | HPBCTL_HPBMUTE,
vol_r << HPBCTL_HPBVOL_SHIFT);
}
void audiohw_enable_recording(bool source_mic)
{
/* mute ADCs */
cscodec_write(ADCCTL, ADCCTL_ADCAMUTE | ADCCTL_ADCBMUTE);
/* from cs42l55 DS:
* PWRCTL1[3]: ADC charge pump, for optimal ADC performance
* and power consumption, set to ‘1’b when VA > 2.1 V and
* set to ‘0’b when VA < 2.1 V.
*/
if (source_mic)
{
#ifdef MONO_MIC
/* power-up CODEC, ADCA and ADC pump */
cscodec_write(PWRCTL1, PWRCTL1_PDN_ADCB);
#else
/* power-up CODEC, ADCA, ADCB and ADC pump */
cscodec_write(PWRCTL1, 0);
#endif
#ifdef BYPASS_PGA
/* select PGA as input */
cscodec_setbits(ALHMUX, ALHMUX_ADCAMUX_MASK | ALHMUX_ADCBMUX_MASK,
ALHMUX_ADCAMUX_PGAA | ALHMUX_ADCBMUX_PGAB);
#endif
/* configure PGA: select AIN2 and set gain */
cscodec_write(PGAACTL, PGAACTL_MUX_AIN2A |
((PGA_GAIN_DB << 1) & PGAACTL_VOLUME_MASK));
#ifndef MONO_MIC
cscodec_write(PGABCTL, PGABCTL_MUX_AIN2B |
((PGA_GAIN_DB << 1) & PGABCTL_VOLUME_MASK));
#endif
}
else /* line-in */
{
/* power-up CODEC, ADCA, ADCB and ADC pump */
cscodec_write(PWRCTL1, 0);
#ifdef BYPASS_PGA
/* selects AIN1 as input (PGA is bypassed) */
cscodec_setbits(ALHMUX, ALHMUX_ADCAMUX_MASK | ALHMUX_ADCBMUX_MASK,
ALHMUX_ADCAMUX_AIN1A | ALHMUX_ADCBMUX_AIN1B);
#else
/* configure PGA: select AIN1 and set gain to 0dB */
cscodec_write(PGAACTL, PGAACTL_MUX_AIN1A);
cscodec_write(PGABCTL, PGABCTL_MUX_AIN1B);
#endif
}
cscodec_write(ADCCTL, 0); /* unmute ADCs */
}
static void handle_tone_onoff(void)
{
if (bass || treble)
{
handle_dsp_power(DSP_MODULE_TONE, 1);
cscodec_setbits(BTCTL, 0, BTCTL_TCEN);
}
else
{
cscodec_setbits(BTCTL, BTCTL_TCEN, 0);
handle_dsp_power(DSP_MODULE_TONE, 0);
}
}
static void handle_dsp_power(void)
{
if (bass || treble)
{
cscodec_setbits(PLAYCTL, PLAYCTL_PDN_DSP, 0);
cscodec_setbits(BTCTL, 0, BTCTL_TCEN);
}
else
{
cscodec_setbits(BTCTL, BTCTL_TCEN, 0);
cscodec_setbits(PLAYCTL, 0, PLAYCTL_PDN_DSP);
}
}
static void handle_dsp_power(int dsp_module, bool onoff)
{
if (onoff)
{
if (!active_dsp_modules)
cscodec_setbits(PLAYCTL, PLAYCTL_PDN_DSP, 0);
active_dsp_modules |= dsp_module;
}
else
{
active_dsp_modules &= ~dsp_module;
if (!active_dsp_modules)
cscodec_setbits(PLAYCTL, 0, PLAYCTL_PDN_DSP);
}
}
void audiohw_set_treble(int value)
{
treble = value;
handle_tone_onoff();
if (value >= -105 && value <= 120)
cscodec_setbits(TONECTL, TONECTL_TREB_MASK,
(8 - value / 15) << TONECTL_TREB_SHIFT);
}
void audiohw_set_bass(int value)
{
bass = value;
handle_tone_onoff();
if (value >= -105 && value <= 120)
cscodec_setbits(TONECTL, TONECTL_BASS_MASK,
(8 - value / 15) << TONECTL_BASS_SHIFT);
}
void audiohw_disable_recording(void)
{
/* reset used registers to default values */
cscodec_write(PGAACTL, 0);
cscodec_write(PGABCTL, 0);
#ifdef BYPASS_PGA
cscodec_setbits(ALHMUX, ALHMUX_ADCAMUX_MASK | ALHMUX_ADCBMUX_MASK,
ALHMUX_ADCAMUX_PGAA | ALHMUX_ADCBMUX_PGAB);
#endif
/* power-down ADC section */
cscodec_write(PWRCTL1, PWRCTL1_PDN_CHRG |
PWRCTL1_PDN_ADCA | PWRCTL1_PDN_ADCB);
}
static void audiohw_mute(bool mute)
{
if (mute) cscodec_setbits(PLAYCTL, 0, PLAYCTL_MSTAMUTE | PLAYCTL_MSTBMUTE);
else cscodec_setbits(PLAYCTL, PLAYCTL_MSTAMUTE | PLAYCTL_MSTBMUTE, 0);
}
void audiohw_set_treble_cutoff(int value)
{
cscodec_setbits(BTCTL, BTCTL_TREBCF_MASK,
(value - 1) << BTCTL_TREBCF_SHIFT);
}
void audiohw_set_bass_cutoff(int value)
{
cscodec_setbits(BTCTL, BTCTL_BASSCF_MASK,
(value - 1) << BTCTL_BASSCF_SHIFT);
}