static void utmip_powerdown_pmc_wake_detect(struct tegra_usb_pmc_data *pmc_data)
{
unsigned long val;
unsigned int inst = pmc_data->instance;
DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, pmc_data->instance);
spin_lock_irqsave(&pmc_lock, flags);
/* power down UTMIP interfaces */
val = readl(pmc_base + PMC_UTMIP_MASTER_CONFIG);
val |= UTMIP_PWR(inst);
writel(val, pmc_base + PMC_UTMIP_MASTER_CONFIG);
/* setup sleep walk usb controller */
val = UTMIP_USBOP_RPD_A | UTMIP_USBON_RPD_A | UTMIP_HIGHZ_A |
UTMIP_USBOP_RPD_B | UTMIP_USBON_RPD_B | UTMIP_HIGHZ_B |
UTMIP_USBOP_RPD_C | UTMIP_USBON_RPD_C | UTMIP_HIGHZ_C |
UTMIP_USBOP_RPD_D | UTMIP_USBON_RPD_D | UTMIP_HIGHZ_D;
writel(val, pmc_base + PMC_SLEEPWALK_REG(inst));
/* Program thermally encoded RCTRL_VAL, TCTRL_VAL into PMC space */
if (pmc_data->utmip_tctrl_val | pmc_data->utmip_rctrl_val) {
val = readl(pmc_base + PMC_UTMIP_TERM_PAD_CFG);
val = PMC_TCTRL_VAL(pmc_data->utmip_tctrl_val) |
PMC_RCTRL_VAL(pmc_data->utmip_rctrl_val);
writel(val, pmc_base + PMC_UTMIP_TERM_PAD_CFG);
}
/* Turn over pad configuration to PMC */
val = readl(pmc_base + PMC_SLEEP_CFG);
val &= ~UTMIP_WAKE_VAL(inst, ~0);
val |= UTMIP_WAKE_VAL(inst, WAKE_VAL_NONE) |
UTMIP_RCTRL_USE_PMC(inst) | UTMIP_TCTRL_USE_PMC(inst) |
UTMIP_FSLS_USE_PMC(inst) | UTMIP_MASTER_ENABLE(inst);
writel(val, pmc_base + PMC_SLEEP_CFG);
spin_unlock_irqrestore(&pmc_lock, flags);
}
static void utmip_setup_pmc_wake_detect(struct tegra_usb_pmc_data *pmc_data)
{
unsigned long val, pmc_pad_cfg_val;
unsigned int inst = pmc_data->instance;
DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, pmc_data->instance);
spin_lock_irqsave(&pmc_lock, flags);
/*Set PMC MASTER bits to do the following
* a. Take over the UTMI drivers
* b. set up such that it will take over resume
* if remote wakeup is detected
* Prepare PMC to take over suspend-wake detect-drive resume until USB
* controller ready
*/
/* disable master enable in PMC */
val = readl(pmc_base + PMC_SLEEP_CFG);
val &= ~UTMIP_MASTER_ENABLE(inst);
writel(val, pmc_base + PMC_SLEEP_CFG);
/* UTMIP_PWR_PX=1 for power savings mode */
val = readl(pmc_base + PMC_UTMIP_MASTER_CONFIG);
val |= UTMIP_PWR(inst);
writel(val, pmc_base + PMC_UTMIP_MASTER_CONFIG);
/* config debouncer */
val = readl(pmc_base + PMC_USB_DEBOUNCE);
val &= ~UTMIP_LINE_DEB_CNT(~0);
val |= UTMIP_LINE_DEB_CNT(1);
val |= PMC_USB_DEBOUNCE_VAL(2);
writel(val, pmc_base + PMC_USB_DEBOUNCE);
/* Make sure nothing is happening on the line with respect to PMC */
val = readl(pmc_base + PMC_UTMIP_FAKE);
val &= ~USBOP_VAL(inst);
val &= ~USBON_VAL(inst);
writel(val, pmc_base + PMC_UTMIP_FAKE);
/* Make sure wake value for line is none */
val = readl(pmc_base + PMC_SLEEPWALK_CFG);
val &= ~UTMIP_LINEVAL_WALK_EN(inst);
writel(val, pmc_base + PMC_SLEEPWALK_CFG);
val = readl(pmc_base + PMC_SLEEP_CFG);
val &= ~UTMIP_WAKE_VAL(inst, ~0);
val |= UTMIP_WAKE_VAL(inst, WAKE_VAL_NONE);
writel(val, pmc_base + PMC_SLEEP_CFG);
/* turn off pad detectors */
val = readl(pmc_base + PMC_USB_AO);
val |= (USBOP_VAL_PD(inst) | USBON_VAL_PD(inst));
writel(val, pmc_base + PMC_USB_AO);
/* Remove fake values and make synchronizers work a bit */
val = readl(pmc_base + PMC_UTMIP_FAKE);
val &= ~USBOP_VAL(inst);
val &= ~USBON_VAL(inst);
writel(val, pmc_base + PMC_UTMIP_FAKE);
/* Enable which type of event can trigger a walk,
* in this case usb_line_wake */
val = readl(pmc_base + PMC_SLEEPWALK_CFG);
val |= UTMIP_LINEVAL_WALK_EN(inst);
writel(val, pmc_base + PMC_SLEEPWALK_CFG);
/* Capture FS/LS pad configurations */
pmc_pad_cfg_val = readl(pmc_base + PMC_PAD_CFG);
val = readl(pmc_base + PMC_TRIGGERS);
val |= UTMIP_CAP_CFG(inst);
writel(val, pmc_base + PMC_TRIGGERS);
udelay(1);
pmc_pad_cfg_val = readl(pmc_base + PMC_PAD_CFG);
/* BIAS MASTER_ENABLE=0 */
val = readl(pmc_base + PMC_UTMIP_BIAS_MASTER_CNTRL);
val &= ~BIAS_MASTER_PROG_VAL;
writel(val, pmc_base + PMC_UTMIP_BIAS_MASTER_CNTRL);
/* program walk sequence for remote or hotplug wakeup */
if ((pmc_data->port_speed < USB_PMC_PORT_SPEED_UNKNOWN) ||
(pmc_data->port_speed == USB_PMC_PORT_SPEED_SUPER)) {
/* program walk sequence, maintain a J, followed by a driven K
* to signal a resume once an wake event is detected */
val = readl(pmc_base + PMC_SLEEPWALK_REG(inst));
val &= ~UTMIP_AP_A;
val |= UTMIP_USBOP_RPD_A | UTMIP_USBON_RPD_A | UTMIP_AN_A |
UTMIP_HIGHZ_A |
UTMIP_USBOP_RPD_B | UTMIP_USBON_RPD_B | UTMIP_AP_B |
UTMIP_AN_B |
UTMIP_USBOP_RPD_C | UTMIP_USBON_RPD_C | UTMIP_AP_C |
UTMIP_AN_C |
UTMIP_USBOP_RPD_D | UTMIP_USBON_RPD_D | UTMIP_AP_D |
UTMIP_AN_D;
writel(val, pmc_base + PMC_SLEEPWALK_REG(inst));
if (pmc_data->port_speed == USB_PMC_PORT_SPEED_LOW) {
val = readl(pmc_base + PMC_SLEEPWALK_REG(inst));
val &= ~(UTMIP_AN_B | UTMIP_HIGHZ_B | UTMIP_AN_C |
UTMIP_HIGHZ_C | UTMIP_AN_D | UTMIP_HIGHZ_D);
writel(val, pmc_base + PMC_SLEEPWALK_REG(inst));
} else {
val = readl(pmc_base + PMC_SLEEPWALK_REG(inst));
val &= ~(UTMIP_AP_B | UTMIP_HIGHZ_B | UTMIP_AP_C |
UTMIP_HIGHZ_C | UTMIP_AP_D | UTMIP_HIGHZ_D |
UTMIP_AN_A);
val |= UTMIP_AP_A;
writel(val, pmc_base + PMC_SLEEPWALK_REG(inst));
}
} else {
/* program walk sequence, pull down both dp and dn lines,
* tristate lines once an hotplug-in wake event is detected */
val = readl(pmc_base + PMC_SLEEPWALK_REG(inst));
val |= UTMIP_USBOP_RPD_A | UTMIP_USBON_RPD_A | UTMIP_HIGHZ_A;
val &= ~UTMIP_AP_A;
val &= ~UTMIP_AN_A;
val |= UTMIP_USBOP_RPD_B | UTMIP_USBON_RPD_B | UTMIP_HIGHZ_B;
val &= ~UTMIP_AP_B;
val &= ~UTMIP_AN_B;
val |= UTMIP_USBOP_RPD_C | UTMIP_USBON_RPD_C | UTMIP_HIGHZ_C;
val &= ~UTMIP_AP_C;
val &= ~UTMIP_AN_C;
val |= UTMIP_USBOP_RPD_D | UTMIP_USBON_RPD_D | UTMIP_HIGHZ_D;
val &= ~UTMIP_AP_D;
val &= ~UTMIP_AN_D;
writel(val, pmc_base + PMC_SLEEPWALK_REG(inst));
}
/* turn on pad detectors */
val = readl(pmc_base + PMC_USB_AO);
val &= ~(USBOP_VAL_PD(inst) | USBON_VAL_PD(inst));
writel(val, pmc_base + PMC_USB_AO);
spin_unlock_irqrestore(&pmc_lock, flags);
/* Add small delay before usb detectors provide stable line values */
mdelay(1);
spin_lock_irqsave(&pmc_lock, flags);
/* Program thermally encoded RCTRL_VAL, TCTRL_VAL into PMC space */
if (pmc_data->utmip_tctrl_val | pmc_data->utmip_rctrl_val) {
val = readl(pmc_base + PMC_UTMIP_TERM_PAD_CFG);
val = PMC_TCTRL_VAL(pmc_data->utmip_tctrl_val) |
PMC_RCTRL_VAL(pmc_data->utmip_rctrl_val);
writel(val, pmc_base + PMC_UTMIP_TERM_PAD_CFG);
}
/* Turn over pad configuration to PMC for line wake events*/
val = readl(pmc_base + PMC_SLEEP_CFG);
val &= ~UTMIP_WAKE_VAL(inst, ~0);
val |= UTMIP_WAKE_VAL(inst, WAKE_VAL_ANY);
val |= UTMIP_RCTRL_USE_PMC(inst) | UTMIP_TCTRL_USE_PMC(inst);
val |= UTMIP_MASTER_ENABLE(inst) | UTMIP_FSLS_USE_PMC(inst);
writel(val, pmc_base + PMC_SLEEP_CFG);
spin_unlock_irqrestore(&pmc_lock, flags);
}
int utmi_phy_set_snps_trking_data(void)
{
void __iomem *base = IO_ADDRESS(TEGRA_USB_BASE);
u32 val;
struct clk *utmi_pad_clk;
utmi_pad_clk = clk_get_sys("utmip-pad", NULL);
if (IS_ERR(utmi_pad_clk)) {
pr_err("%s: can't get utmip pad clock\n", __func__);
return PTR_ERR(utmi_pad_clk);
}
if (!pmc_base)
pmc_base = IO_ADDRESS(TEGRA_PMC_BASE);
clk_enable(utmi_pad_clk);
spin_lock_irqsave(&pmc_lock, flags);
/* Bias pad MASTER_ENABLE=1 */
val = readl(pmc_base + PMC_UTMIP_BIAS_MASTER_CNTRL);
val |= BIAS_MASTER_PROG_VAL;
writel(val, pmc_base + PMC_UTMIP_BIAS_MASTER_CNTRL);
/* Setting the tracking length time */
val = readl(base + UTMIP_BIAS_CFG1);
val &= ~UTMIP_BIAS_PDTRK_COUNT(~0);
val |= UTMIP_BIAS_PDTRK_COUNT(5);
writel(val, base + UTMIP_BIAS_CFG1);
/* Bias PDTRK is Shared and MUST be done from USB1 ONLY, PD_TRK=0 */
val = readl(base + UTMIP_BIAS_CFG1);
val &= ~UTMIP_BIAS_PDTRK_POWERDOWN;
writel(val, base + UTMIP_BIAS_CFG1);
val = readl(base + UTMIP_BIAS_CFG1);
val |= UTMIP_BIAS_PDTRK_POWERUP;
writel(val, base + UTMIP_BIAS_CFG1);
/* Wait for 25usec */
udelay(25);
/* Bias pad MASTER_ENABLE=0 */
val = readl(pmc_base + PMC_UTMIP_BIAS_MASTER_CNTRL);
val &= ~BIAS_MASTER_PROG_VAL;
writel(val, pmc_base + PMC_UTMIP_BIAS_MASTER_CNTRL);
/* Wait for 1usec */
udelay(1);
/* Bias pad MASTER_ENABLE=1 */
val = readl(pmc_base + PMC_UTMIP_BIAS_MASTER_CNTRL);
val |= BIAS_MASTER_PROG_VAL;
writel(val, pmc_base + PMC_UTMIP_BIAS_MASTER_CNTRL);
/* Read RCTRL and TCTRL from UTMIP space */
val = readl(base + UTMIP_BIAS_STS0);
utmip_rctrl_val = 0xf + ffz(UTMIP_RCTRL_VAL(val));
utmip_tctrl_val = 0xf + ffz(UTMIP_TCTRL_VAL(val));
/* PD_TRK=1 */
val = readl(base + UTMIP_BIAS_CFG1);
val |= UTMIP_BIAS_PDTRK_POWERDOWN;
writel(val, base + UTMIP_BIAS_CFG1);
/* Program thermally encoded RCTRL_VAL, TCTRL_VAL into PMC space */
val = readl(pmc_base + PMC_UTMIP_TERM_PAD_CFG);
val = PMC_TCTRL_VAL(utmip_tctrl_val) |
PMC_RCTRL_VAL(utmip_rctrl_val);
writel(val, pmc_base + PMC_UTMIP_TERM_PAD_CFG);
spin_unlock_irqrestore(&pmc_lock, flags);
clk_disable(utmi_pad_clk);
clk_put(utmi_pad_clk);
return 0;
}
