bool musb_is_host(void)
{
u8 devctl = 0;
DBG(0,"will mask PMIC charger detection\n");
upmu_interrupt_chrdet_int_en(0);
musb_platform_enable(mtk_musb);
//musb_set_vbus(mtk_musb,FALSE);
//mt65xx_eint_mask(EINT_CHR_DET_NUM);
devctl = musb_readb(mtk_musb->mregs,MUSB_DEVCTL);
DBG(0, "devctl = %x before end session\n", devctl);
devctl &= ~MUSB_DEVCTL_SESSION; // this will cause A-device change back to B-device after A-cable plug out
musb_writeb(mtk_musb->mregs, MUSB_DEVCTL, devctl);
msleep(delay_time);
devctl = musb_readb(mtk_musb->mregs, MUSB_DEVCTL);
DBG(0,"devctl = %x before set session\n",devctl);
devctl |= MUSB_DEVCTL_SESSION;
//musb_set_vbus(mtk_musb,TRUE);
musb_writeb(mtk_musb->mregs, MUSB_DEVCTL, devctl);
msleep(delay_time1);
devctl = musb_readb(mtk_musb->mregs, MUSB_DEVCTL);
DBG(0, "devclt = %x\n", devctl);
if (devctl & MUSB_DEVCTL_BDEVICE) {
usb_is_host = FALSE;
DBG(0,"will unmask PMIC charger detection\n");
upmu_interrupt_chrdet_int_en(1);
return FALSE;
} else {
usb_is_host = TRUE;
return TRUE;
}
}
int musb_otg_env_init(void){
u8 power;
//u8 intrusb;
//step1: mask the PMU/PMIC EINT
mtk_musb->usb_if = true;
mtk_musb->is_host = true;//workaround for PMIC charger detection
//mt65xx_eint_mask(EINT_CHR_DET_NUM);
upmu_interrupt_chrdet_int_en(0);
#ifndef MTK_FAN5405_SUPPORT
#ifndef MTK_NCP1851_SUPPORT
#ifndef MTK_BQ24196_SUPPORT
#ifndef MTK_BQ24158_SUPPORT
//set the drvvbus mode as drvvbus(mode 6)
#if !(defined(CONFIG_MT6585_FPGA) || defined(CONFIG_MT6577_FPGA) || defined(CONFIG_MT6589_FPGA) || defined(CONFIG_MT6582_FPGA))
mt_set_gpio_mode(GPIO_OTG_DRVVBUS_PIN,6);
#endif
#endif
#endif
#endif
#endif
//step5: make sure to power on the USB module
if(mtk_musb->power)
mtk_musb->power = FALSE;
musb_platform_enable(mtk_musb);
//step6: clear session bit
musb_writeb(mtk_musb->mregs,MUSB_DEVCTL,0);
//step7: disable and enable usb interrupt
usb_l1intm_store = musb_readl(mtk_musb->mregs,USB_L1INTM);
usb_intrrxe_store = musb_readw(mtk_musb->mregs,MUSB_INTRRXE);
usb_intrtxe_store = musb_readw(mtk_musb->mregs,MUSB_INTRTXE);
usb_intrusbe_store = musb_readb(mtk_musb->mregs,MUSB_INTRUSBE);
musb_writel(mtk_musb->mregs,USB_L1INTM,0);
musb_writew(mtk_musb->mregs,MUSB_INTRRXE,0);
musb_writew(mtk_musb->mregs,MUSB_INTRTXE,0);
musb_writeb(mtk_musb->mregs,MUSB_INTRUSBE,0);
musb_writew(mtk_musb->mregs,MUSB_INTRRX,0xffff);
musb_writew(mtk_musb->mregs,MUSB_INTRTX,0xffff);
musb_writeb(mtk_musb->mregs,MUSB_INTRUSB,0xff);
free_irq (mtk_musb->nIrq, mtk_musb);
musb_writel(mtk_musb->mregs,USB_L1INTM,0x105);
musb_writew(mtk_musb->mregs,MUSB_INTRTXE,1);
musb_writeb(mtk_musb->mregs,MUSB_INTRUSBE,0xf7);
//setp8: set the index to 0 for ep0, maybe no need. Designers said it is better not to use the index register.
musb_writeb(mtk_musb->mregs, MUSB_INDEX, 0);
//setp9: init message
g_otg_message.msg = 0;
spin_lock_init(&g_otg_message.lock);
init_completion(&stop_event);
#ifdef DX_DBG
power = musb_readb(mtk_musb->mregs,MUSB_POWER);
DBG(0,"start the USB-IF test in EM,power=0x%x!\n",power);
#endif
return 0;
}
int musb_otg_env_exit(void){
DBG(0,"stop the USB-IF test in EM!\n");
musb_writel(mtk_musb->mregs,USB_L1INTM,0);
musb_writew(mtk_musb->mregs,MUSB_INTRRXE,0);
musb_writew(mtk_musb->mregs,MUSB_INTRTXE,0);
musb_writeb(mtk_musb->mregs,MUSB_INTRUSBE,0);
musb_writew(mtk_musb->mregs,MUSB_INTRRX,0xffff);
musb_writew(mtk_musb->mregs,MUSB_INTRTX,0xffff);
musb_writeb(mtk_musb->mregs,MUSB_INTRUSB,0xff);
musb_writel(mtk_musb->mregs,USB_L1INTM,usb_l1intm_store);
musb_writew(mtk_musb->mregs,MUSB_INTRRXE,usb_intrrxe_store);
musb_writew(mtk_musb->mregs,MUSB_INTRTXE,usb_intrtxe_store);
musb_writeb(mtk_musb->mregs,MUSB_INTRUSBE,usb_intrusbe_store);
mtk_musb->usb_if = false;
mtk_musb->is_host = false;
upmu_interrupt_chrdet_int_en(1);
return 0;
}