void pcm_play_dma_postinit(void)
{
/* Configure clock divider */
tsc2100_writereg(CONTROL_PAGE2, TSPP1_ADDRESS, 0x1120);
tsc2100_writereg(CONTROL_PAGE2, TSAC3_ADDRESS, 0x0800);
tsc2100_writereg(CONTROL_PAGE2, TSCPC_ADDRESS, 0x3B00);
tsc2100_writereg(CONTROL_PAGE2, TSAC1_ADDRESS, 0x0300);
tsc2100_writereg(CONTROL_PAGE2, TSCSC_ADDRESS, 0xC580);
audiohw_postinit();
}
void tsc2100_adc_init(void)
{
/* Set the TSC2100 to read touchscreen */
tsc2100_set_mode(true, 0x02);
tsc2100_writereg(TSSTAT_PAGE, TSSTAT_ADDRESS,
(0x1<<TSSTAT_PINTDAV_SHIFT) /* Data available only */
);
/* An additional 2 mA can be saved here by powering down vref between
* conversions, but it adds a click to the audio on the M:Robe 500
*/
tsc2100_writereg(TSREF_PAGE, TSREF_ADDRESS,
TSREF_VREFM|TSREF_IREFV);
}
void audiohw_set_frequency(int fsel)
{
int reg_val;
reg_val = tsc2100_readreg(CONTROL_PAGE2, TSAC1_ADDRESS);
reg_val &= ~(0x07<<3);
switch(fsel)
{
case HW_FREQ_8:
reg_val |= (0x06<<3);
break;
case HW_FREQ_11:
reg_val |= (0x04<<3);
break;
case HW_FREQ_22:
reg_val |= (0x02<<3);
break;
case HW_FREQ_44:
default:
break;
}
tsc2100_writereg(CONTROL_PAGE2, TSAC1_ADDRESS, reg_val);
}
void audiohw_init(void)
{
short val = tsc2100_readreg(TSAC4_PAGE, TSAC4_ADDRESS);
/* disable DAC PGA soft-stepping */
val |= TSAC4_DASTDP;
tsc2100_writereg(TSAC4_PAGE, TSAC4_ADDRESS, val);
}
static void audiohw_mute(bool mute)
{
short vol = tsc2100_readreg(TSDACGAIN_PAGE, TSDACGAIN_ADDRESS);
/* left mute bit == 1<<15
right mute bit == 1<<7
*/
if (mute)
{
vol |= (1<<15)|(1<<7);
} else
{
vol &= ~((1<<15)|(1<<7));
}
is_muted = mute;
tsc2100_writereg(TSDACGAIN_PAGE, TSDACGAIN_ADDRESS, vol);
}
void tsc2100_set_mode(bool poweron, unsigned char scan_mode)
{
short tsadc=(scan_mode<<TSADC_ADSCM_SHIFT)| /* mode */
(0x3<<TSADC_RESOL_SHIFT)| /* 12 bit resolution */
(0x2<<TSADC_ADCR_SHIFT )| /* 2 MHz internal clock */
(0x2<<TSADC_PVSTC_SHIFT);
if(!poweron)
{
tsadc|=TSADC_ADST;
}
if(scan_mode<6)
tsadc|=TSADC_PSTCM;
tsc2100_writereg(TSADC_PAGE, TSADC_ADDRESS, tsadc);
}
void audiohw_set_master_vol(int vol_l, int vol_r)
{
tsc2100_writereg(TSDACGAIN_PAGE, TSDACGAIN_ADDRESS, (short)((vol_l<<8) | vol_r) );
}
void tsc2100_keyclick(void)
{
// 1100 0100 0001 0000
//short val = 0xC410;
tsc2100_writereg(TSAC2_PAGE, TSAC2_ADDRESS, tsc2100_readreg(TSAC2_PAGE, TSAC2_ADDRESS)&0x8000);
}