void usb11_hs_slew_rate_cal(void){
unsigned long data;
unsigned long x;
unsigned char value;
unsigned long start_time, timeout;
unsigned int timeout_flag = 0;
//4 s1:enable usb ring oscillator.
USB11PHY_WRITE8(0x15,0x80);
//4 s2:wait 1us.
udelay(1);
//4 s3:enable free run clock
USB11PHY_WRITE8 (0xf00-0x900+0x11,0x01);
//4 s4:setting cyclecnt.
USB11PHY_WRITE8 (0xf00-0x900+0x01,0x04);
//4 s5:enable frequency meter
USB11PHY_SET8 (0xf00-0x900+0x03,0x05);
//4 s6:wait for frequency valid.
start_time = jiffies;
timeout = jiffies + 3 * HZ;
while(!(USB11PHY_READ8(0xf00-0x900+0x10)&0x1)){
if(time_after(jiffies, timeout)){
timeout_flag = 1;
break;
}
}
//4 s7: read result.
if(timeout_flag){
printk("[USBPHY] Slew Rate Calibration: Timeout\n");
value = 0x4;
}
else{
data = USB11PHY_READ32 (0xf00-0x900+0x0c);
x = ((1024*FRA*PARA)/data);
value = (unsigned char)(x/1000);
if((x-value*1000)/100>=5)
value += 1;
// printk("[USB11PHY]slew calibration:FM_OUT =%d, x=%d,value=%d\n",data,x,value);
}
//4 s8: disable Frequency and run clock.
USB11PHY_CLR8 (0xf00-0x900+0x03,0x05);//disable frequency meter
USB11PHY_CLR8 (0xf00-0x900+0x11,0x01);//disable free run clock
//4 s9:
USB11PHY_WRITE8(0x15,value<<4);
//4 s10:disable usb ring oscillator.
USB11PHY_CLR8(0x15,0x80);
}
static void musbfsh_port_reset(struct musbfsh *musbfsh, bool do_reset)
{
u8 power;
void __iomem *mbase = musbfsh->mregs;
/* NOTE: caller guarantees it will turn off the reset when
* the appropriate amount of time has passed
*/
power = musbfsh_readb(mbase, MUSBFSH_POWER);
WARNING("reset=%d power=0x%x\n", do_reset, power);
if (do_reset) {
if (power & MUSBFSH_POWER_SUSPENDM) {
WARNING("reset a suspended device\n");
#ifdef CONFIG_MTK_DT_USB_SUPPORT
request_wakeup_md_timeout(0, 0);
#endif
#ifdef MTK_USB_RUNTIME_SUPPORT
/* ERR("EINT to wake up MD for reset\n"); */
/* wx, we may have to reset a suspended MD */
/* request_wakeup_md_timeout(0, 0); */
#endif
musbfsh_writeb(mbase,
MUSBFSH_POWER, power |
MUSBFSH_POWER_RESUME);
mdelay(20);
musbfsh_writeb(mbase, MUSBFSH_POWER,
power & ~MUSBFSH_POWER_RESUME);
}
/*
* If RESUME is set, we must make sure it stays minimum 20 ms.
* Then we must clear RESUME and wait a bit to let musb start
* generating SOFs. If we don't do this, OPT HS A 6.8 tests
* fail with "Error! Did not receive an SOF before suspend
* detected".
*/
if (power & MUSBFSH_POWER_RESUME) {
WARNING("reset a resuming device\n");
while (time_before(jiffies, musbfsh->rh_timer))
mdelay(1);
/* stop the resume signal */
musbfsh_writeb(mbase, MUSBFSH_POWER,
power & ~MUSBFSH_POWER_RESUME);
mdelay(1);
}
musbfsh->ignore_disconnect = true;
power &= 0xf0;
musbfsh_writeb(mbase, MUSBFSH_POWER,
power | MUSBFSH_POWER_RESET);
mb(); /* flush POWER and PHY setting immediately */
musbfsh->port1_status |= USB_PORT_STAT_RESET;
musbfsh->port1_status &= ~USB_PORT_STAT_ENABLE;
musbfsh->rh_timer = jiffies + msecs_to_jiffies(50);
} else {
INFO("Root port reset stopped\n");
#ifdef CONFIG_MTK_ICUSB_SUPPORT
if (resistor_control_attr.value) {
/* improve signal quality, from Dingjun */
#if 0
/* FS_DISC_DISABLE */
u32 TM1;
TM1 = musbfsh_readl(mbase, 0x604);
musbfsh_writel(mbase, 0x604, TM1 | 0x4);
MYDBG("set FS_DISC_DISABLE\n");
#endif
/* original flow from SS5 */
USB11PHY_SET8(U1PHTCR2,
force_usb11_dm_rpd | force_usb11_dp_rpd);
/*
* disconnect host port's pull down resistors
* on D+ and D-
*/
USB11PHY_CLR8(U1PHTCR2,
RG_USB11_DM_RPD | RG_USB11_DP_RPD);
/*
* Tell MAC there still is a device attached,
* ohterwise we will get disconnect interrupt
*/
USB11PHY_SET8(U1PHTCR2,
force_usb11_dp_rpu | RG_USB11_DP_RPU);
/* force */
USB11PHY_SET8(0x6a, 0x20 | 0x10);
/* RG */
/*
* disconnect host port's pull down resistors
* on D+ and D-
*/
USB11PHY_CLR8(0x68, 0x80 | 0x40);
/*
* Tell MAC there still is a device attached,
* ohterwise we will get disconnect interrupt.
*/
/* USB11PHY_SET8(U1PHTCR2,
* force_usb11_dp_rpu |
* RG_USB11_DP_RPU);
*/
MYDBG("USB1.1 PHY special config for IC-USB\n");
} else {
MYDBG("");
}
#endif
musbfsh_writeb(mbase,
MUSBFSH_POWER, power & ~MUSBFSH_POWER_RESET);
#ifdef CONFIG_MTK_ICUSB_SUPPORT
if (resistor_control_attr.value)
USB11PHY_CLR8(0x6a, 0x20 | 0x10);
else
MYDBG("");
#endif
mb(); /* flush POWER and PHY setting immediately */
musbfsh->ignore_disconnect = false;
power = musbfsh_readb(mbase, MUSBFSH_POWER);
if (power & MUSBFSH_POWER_HSMODE) {
INFO("high-speed device connected\n");
musbfsh->port1_status |= USB_PORT_STAT_HIGH_SPEED;
}
#if 0 /* IC_USB from SS5 */
#ifdef IC_USB
USB11PHY_SET8(U1PHTCR2,
force_usb11_dm_rpd | force_usb11_dp_rpd);
/* disconnect host port's pull down resistors on D+ and D- */
USB11PHY_CLR8(U1PHTCR2, RG_USB11_DM_RPD | RG_USB11_DP_RPD);
/*
* tell MAC there still is a device attached,
* ohterwise we will get disconnect interrupt
*/
USB11PHY_SET8(U1PHTCR2, force_usb11_dp_rpu | RG_USB11_DP_RPU);
WARNING("USB1.1 PHY special config for IC-USB 0x%X=%x\n",
U1PHTCR2, USB11PHY_READ8(U1PHTCR2));
#endif
#endif
musbfsh->port1_status &= ~USB_PORT_STAT_RESET;
musbfsh->port1_status |=
USB_PORT_STAT_ENABLE | (USB_PORT_STAT_C_RESET << 16) |
(USB_PORT_STAT_C_ENABLE << 16);
/* call back func to notify the hub thread the state of hub! */
usb_hcd_poll_rh_status(musbfsh_to_hcd(musbfsh));
musbfsh->vbuserr_retry = VBUSERR_RETRY_COUNT;
}
}
static void musbfsh_port_reset(struct musbfsh *musbfsh, bool do_reset)
{
u8 power;
void __iomem *mbase = musbfsh->mregs;
/* NOTE: caller guarantees it will turn off the reset when
* the appropriate amount of time has passed
*/
power = musbfsh_readb(mbase, MUSBFSH_POWER);
WARNING("reset=%d power=0x%x\n", do_reset, power);
if (do_reset) {
if(power & MUSBFSH_POWER_SUSPENDM) {
WARNING("reset a suspended device\n");
#ifdef MTK_USB_RUNTIME_SUPPORT
//ERR("EINT to wake up MD for reset\n");
//request_wakeup_md_timeout(0, 0); //wx, we may have to reset a suspended MD
#endif
musbfsh_writeb(mbase, MUSBFSH_POWER,
power | MUSBFSH_POWER_RESUME);
mdelay(20);
musbfsh_writeb(mbase, MUSBFSH_POWER,
power & ~MUSBFSH_POWER_RESUME);
}
/*
* If RESUME is set, we must make sure it stays minimum 20 ms.
* Then we must clear RESUME and wait a bit to let musb start
* generating SOFs. If we don't do this, OPT HS A 6.8 tests
* fail with "Error! Did not receive an SOF before suspend
* detected".
*/
if (power & MUSBFSH_POWER_RESUME) {
WARNING("reset a resuming device\n");
while (time_before(jiffies, musbfsh->rh_timer))
mdelay(1);
musbfsh_writeb(mbase, MUSBFSH_POWER,//stop the resume signal
power & ~MUSBFSH_POWER_RESUME);
mdelay(1);
}
musbfsh->ignore_disconnect = true;
power &= 0xf0;
musbfsh_writeb(mbase, MUSBFSH_POWER,
power | MUSBFSH_POWER_RESET);
mb();
musbfsh->port1_status |= USB_PORT_STAT_RESET;
musbfsh->port1_status &= ~USB_PORT_STAT_ENABLE;
musbfsh->rh_timer = jiffies + msecs_to_jiffies(50);
} else {
INFO( "Root port reset stopped\n");
musbfsh_writeb(mbase, MUSBFSH_POWER,
power & ~MUSBFSH_POWER_RESET);
mb();
musbfsh->ignore_disconnect = false;
power = musbfsh_readb(mbase, MUSBFSH_POWER);
if (power & MUSBFSH_POWER_HSMODE) {
INFO( "high-speed device connected\n");
musbfsh->port1_status |= USB_PORT_STAT_HIGH_SPEED;
}
#ifdef IC_USB
USB11PHY_SET8(U1PHTCR2, force_usb11_dm_rpd | force_usb11_dp_rpd);
USB11PHY_CLR8(U1PHTCR2, RG_USB11_DM_RPD | RG_USB11_DP_RPD); // disconnect host port's pull down resistors on D+ and D-
USB11PHY_SET8(U1PHTCR2, force_usb11_dp_rpu | RG_USB11_DP_RPU); // tell MAC there still is a device attached, ohterwise we will get disconnect interrupt
WARNING("USB1.1 PHY special config for IC-USB 0x%X=%x\n", U1PHTCR2, USB11PHY_READ8(U1PHTCR2));
#endif
musbfsh->port1_status &= ~USB_PORT_STAT_RESET;
musbfsh->port1_status |= USB_PORT_STAT_ENABLE
| (USB_PORT_STAT_C_RESET << 16)
| (USB_PORT_STAT_C_ENABLE << 16);
usb_hcd_poll_rh_status(musbfsh_to_hcd(musbfsh));//call back func to notify the hub thread the state of hub!
musbfsh->vbuserr_retry = VBUSERR_RETRY_COUNT;
}
}