void button_init_device(void)
{
#ifdef BOOTLOADER
/* Can be called more than once in the bootloader */
if (initialized)
return;
initialized = true;
#endif
/* Enable keypad clock */
ccm_module_clock_gating(CG_KPP, CGM_ON_RUN_WAIT);
/* 1. Enable number of rows in keypad (KPCR[4:0])
*
* Configure the rows/cols in KPP
* LSB nybble in KPP is for 5 rows
* MSB nybble in KPP is for 3 cols */
KPP_KPCR |= 0x1f;
/* 2. Write 0's to KPDR[10:8] */
KPP_KPDR &= ~(0x7 << 8);
/* 3. Configure the keypad columns as open-drain (KPCR[10:8]). */
KPP_KPCR |= (0x7 << 8);
/* 4. Configure columns as output, rows as input (KDDR[10:8,4:0]) */
KPP_KDDR = (KPP_KDDR | (0x7 << 8)) & ~0x1f;
/* 5. Clear the KPKD Status Flag and Synchronizer chain.
* 6. Set the KDIE control bit bit. */
KPP_KPSR = KPP_KPSR_KRSS | KPP_KPSR_KDSC | KPP_KPSR_KPKD;
power_button_update(!(mc13783_read(MC13783_INTERRUPT_SENSE1)
& MC13783_ONOFD1S));
mc13783_enable_event(MC13783_ONOFD1_EVENT, true);
#ifdef HAVE_HEADPHONE_DETECTION
headphone_init();
#endif
}
/* Power button event - called from PMIC ISR */
void button_power_event(void)
{
power_button_update(!mc13783_event_sense(MC13783_ONOFD1_EVENT));
}
/* Power button event - called from PMIC ISR */
void MC13783_EVENT_CB_ONOFD1(void)
{
power_button_update(!mc13783_event_sense());
}
