SIM Hot Swap Plugin/out HISR fail while touch in touch panel

SIM Hot Swap Plugin/out HISR fail while touch in touch panel

[Description]

1, Touch and hold Touch Panel, or Press and holdkeys(used EINT)

2, Plug in or Plug out SIM card.

3, SIM card hot swap failure.

[Solution]

MT65*5/MT65*7 platform, AP & Modem share EINT module.

Touch and hold Touch Panel, or Press and hold keys(used EINT), Touch/keys EINT pin

trigger by AP, AP EINT ownermask EINT_MD. So modem EINT failure.

Patch: ALPS00420157

OR

modify AP side mt_eint.c/mt6577/5_eint.c as flow

alps\mediatek\platform\$(mt6577 or mt6575)\kernel\core\mt6577/5_eint.c(ICS2)

alps\mediatek\platform\$(mt6577 or mt6575)\kernel\core\mt_eint.c(JB)

/*

* mt65xx_eint_isr: EINT interrupt service routine.

* @irq: EINT IRQ number

* @dev_id:

* Return IRQ returned code.

*/

static irqreturn_t mt65xx_eint_isr(int irq, void *dev_id)

{

unsigned int index;

unsigned int status;

unsigned int domain;

/*

* NoteXXX: Need to get the wake up for 0.5 seconds when an EINT intr tirggers.

* This is used to prevent system from suspend such that other drivers

* or applications can have enough time to obtain their own wake lock.

* (This information is gotten from the power management owner.)

*/

tasklet_schedule(&eint_tasklet);

status = readl(EINT_STA);

domain = readl(EINT_D0EN);

dbgmsg("EINT Module - %s ISR Start\n", __func__);

dbgmsg("EINT Module - EINT_STA = 0x%x\n", status);

for (index = 0; index < EINT_MAX_CHANNEL; index++) {

if ((status & (1 << (index))) && (domain & (1 << (index)))) {

mt65xx_eint_mask(index);

if (EINT_FUNC.eint_func[index]) {

EINT_FUNC.eint_func[index]();

}

mt65xx_reg_sync_writel(1 << index, EINT_INTACK);

#if(EINT_DEBUG == 1)

status = readl(EINT_STA);

printk("EINT Module - EINT_STA after ack = 0x%x\n", status);

#endif

if (EINT_FUNC.eint_auto_umask[index]) {

mt65xx_eint_unmask(index);

}

}

}

dbgmsg("EINT Module - %s ISR END\n", __func__);

return IRQ_HANDLED;

}