/**
* Dump global registers and either host or device registers (depending on the
* current mode of the core).
*/
static ssize_t regdump_show( struct device *_dev,
struct device_attribute *attr, char *buf)
{
dwc_otg_device_t *otg_dev = _dev->platform_data;
dwc_otg_dump_global_registers( otg_dev->core_if);
if (dwc_otg_is_host_mode(otg_dev->core_if)) {
dwc_otg_dump_host_registers( otg_dev->core_if);
} else {
dwc_otg_dump_dev_registers( otg_dev->core_if);
}
return sprintf( buf, "Register Dump\n" );
}
/**
* Dump global registers and either host or device registers (depending on the
* current mode of the core).
*/
static ssize_t regdump_show(struct device *_dev,
struct device_attribute *attr,
char *buf)
{
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
dwc_otg_dump_global_registers(otg_dev->core_if);
if (dwc_otg_is_host_mode(otg_dev->core_if))
dwc_otg_dump_host_registers(otg_dev->core_if);
else
dwc_otg_dump_dev_registers(otg_dev->core_if);
return sprintf(buf, "Register Dump\n");
}
/**
* Dump global registers and either host or device registers (depending on the
* current mode of the core).
*/
static ssize_t regdump_show( struct device *_dev, struct device_attribute *attr, char *buf)
{
#ifdef DEBUG
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
printk("%s otg_dev=0x%p\n", __FUNCTION__, otg_dev);
dwc_otg_dump_global_registers( otg_dev->core_if);
if (dwc_otg_is_host_mode(otg_dev->core_if)) {
dwc_otg_dump_host_registers( otg_dev->core_if);
} else {
dwc_otg_dump_dev_registers( otg_dev->core_if);
}
#endif
return sprintf( buf, "Register Dump\n" );
}
/**
* Dump global registers and either host or device registers (depending on the
* current mode of the core).
*/
static ssize_t regdump_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
dwc_otg_device_t *otg_dev = get_otg_dev();
DWC_PRINTF("otg_dev:%p\n", otg_dev);
DWC_PRINTF("core_if:%p\n", otg_dev->core_if);
dwc_otg_dump_global_registers(otg_dev->core_if);
if (dwc_otg_is_host_mode(otg_dev->core_if)) {
dwc_otg_dump_host_registers(otg_dev->core_if);
} else {
dwc_otg_dump_dev_registers(otg_dev->core_if);
}
return sprintf(buf, "Register Dump\n");
}
/**
* Store the sleep_status attribure.
*/
static ssize_t sleepstatus_store(struct device *_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
dwc_otg_core_if_t *core_if = otg_dev->core_if;
if (dwc_otg_get_lpm_portsleepstatus(otg_dev->core_if)) {
if (dwc_otg_is_host_mode(core_if)) {
DWC_PRINTF("Host initiated resume\n");
dwc_otg_set_prtresume(otg_dev->core_if, 1);
}
}
return count;
}
/**
* Dump global registers and either host or device registers (depending on the
* current mode of the core).
*/
static ssize_t regdump_show( struct device *_dev,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
char *buf)
{
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
dwc_otg_dump_global_registers( otg_dev->core_if);
if (dwc_otg_is_host_mode(otg_dev->core_if)) {
dwc_otg_dump_host_registers( otg_dev->core_if);
} else {
dwc_otg_dump_dev_registers( otg_dev->core_if);
}
return sprintf( buf, "Register Dump\n" );
}
static irqreturn_t dwc_otg_externalchgpump_irq(int _irq, void *dev)
{
struct dwc_otg_device *dwc_dev = dev;
if (dwc_otg_is_host_mode(dwc_dev->core_if)) {
struct dwc_hcd *dwc_hcd;
u32 hprt0 = 0;
dwc_hcd = dwc_dev->hcd;
spin_lock(&dwc_hcd->lock);
dwc_hcd->flags.b.port_over_current_change = 1;
hprt0 = DWC_HPRT0_PRT_PWR_RW(hprt0, 0);
dwc_reg_write(dwc_dev->core_if->host_if->hprt0, 0, hprt0);
spin_unlock(&dwc_hcd->lock);
} else {
/* Device mode - This int is n/a for device mode */
dev_dbg(dev, "DeviceMode: OTG OverCurrent Detected\n");
}
return IRQ_HANDLED;
}
/**
* Set the register offset for the next Register Access Read/Write
*/
static ssize_t regoffset_store(struct device *_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
uint32_t offset = simple_strtoul(buf, NULL, 16);
#if defined(PCI_INTERFACE)
if (offset < 0x00040000) {
#else
if (offset < SZ_256K) {
#endif
otg_dev->reg_offset = offset;
} else {
dev_err(_dev, "invalid offset\n");
}
return count;
}
DEVICE_ATTR(regoffset, S_IRUGO | S_IWUSR, regoffset_show, regoffset_store);
/**
* Show the value of the register at the offset in the reg_offset
* attribute.
*/
static ssize_t regvalue_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
uint32_t val;
volatile uint32_t *addr;
if (otg_dev->reg_offset != 0xFFFFFFFF && 0 != otg_dev->base) {
/* Calculate the address */
addr = (uint32_t *)(otg_dev->reg_offset +
(uint8_t *)otg_dev->base);
val = dwc_read_reg32(addr);
return snprintf(buf,
sizeof("Reg@0xFFFFFFFF = 0xFFFFFFFF\n") + 1,
"Reg@0x%06x = 0x%08x\n", otg_dev->reg_offset,
val);
} else {
dev_err(_dev, "Invalid offset (0x%0x)\n", otg_dev->reg_offset);
return sprintf(buf, "invalid offset\n");
}
}
/**
* Store the value in the register at the offset in the reg_offset
* attribute.
*
*/
static ssize_t regvalue_store(struct device *_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
volatile uint32_t *addr;
uint32_t val = simple_strtoul(buf, NULL, 16);
/* dev_dbg(_dev, "Offset=0x%08x Val=0x%08x\n", otg_dev->reg_offset, val); */
if (otg_dev->reg_offset != 0xFFFFFFFF && 0 != otg_dev->base) {
/* Calculate the address */
addr = (uint32_t *)(otg_dev->reg_offset +
(uint8_t *)otg_dev->base);
dwc_write_reg32(addr, val);
} else {
dev_err(_dev, "Invalid Register Offset (0x%08x)\n",
otg_dev->reg_offset);
}
return count;
}
DEVICE_ATTR(regvalue, S_IRUGO | S_IWUSR, regvalue_show, regvalue_store);
/*
* Attributes
*/
DWC_OTG_DEVICE_ATTR_BITFIELD_RO(mode, "Mode");
DWC_OTG_DEVICE_ATTR_BITFIELD_RW(hnpcapable, "HNPCapable");
DWC_OTG_DEVICE_ATTR_BITFIELD_RW(srpcapable, "SRPCapable");
DWC_OTG_DEVICE_ATTR_BITFIELD_RW(hsic_connect, "HSIC Connect");
DWC_OTG_DEVICE_ATTR_BITFIELD_RW(inv_sel_hsic, "Invert Select HSIC");
/* DWC_OTG_DEVICE_ATTR_BITFIELD_RW(buspower,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode"); */
/* DWC_OTG_DEVICE_ATTR_BITFIELD_RW(bussuspend,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode"); */
DWC_OTG_DEVICE_ATTR_BITFIELD_RO(busconnected, "Bus Connected");
DWC_OTG_DEVICE_ATTR_REG32_RW(gotgctl, 0, "GOTGCTL");
DWC_OTG_DEVICE_ATTR_REG32_RW(gusbcfg,
&(otg_dev->core_if->core_global_regs->gusbcfg),
"GUSBCFG");
DWC_OTG_DEVICE_ATTR_REG32_RW(grxfsiz,
&(otg_dev->core_if->core_global_regs->grxfsiz),
"GRXFSIZ");
DWC_OTG_DEVICE_ATTR_REG32_RW(gnptxfsiz,
&(otg_dev->core_if->core_global_regs->gnptxfsiz),
"GNPTXFSIZ");
DWC_OTG_DEVICE_ATTR_REG32_RW(gpvndctl,
&(otg_dev->core_if->core_global_regs->gpvndctl),
"GPVNDCTL");
DWC_OTG_DEVICE_ATTR_REG32_RW(ggpio,
&(otg_dev->core_if->core_global_regs->ggpio),
"GGPIO");
DWC_OTG_DEVICE_ATTR_REG32_RW(guid, &(otg_dev->core_if->core_global_regs->guid),
"GUID");
DWC_OTG_DEVICE_ATTR_REG32_RO(gsnpsid,
&(otg_dev->core_if->core_global_regs->gsnpsid),
"GSNPSID");
DWC_OTG_DEVICE_ATTR_BITFIELD_RW(devspeed, "Device Speed");
DWC_OTG_DEVICE_ATTR_BITFIELD_RO(enumspeed, "Device Enumeration Speed");
DWC_OTG_DEVICE_ATTR_REG32_RO(hptxfsiz,
&(otg_dev->core_if->core_global_regs->hptxfsiz),
"HPTXFSIZ");
DWC_OTG_DEVICE_ATTR_REG32_RW(hprt0, otg_dev->core_if->host_if->hprt0, "HPRT0");
/**
* @todo Add code to initiate the HNP.
*/
/**
* Show the HNP status bit
*/
static ssize_t hnp_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
return sprintf(buf, "HstNegScs = 0x%x\n",
dwc_otg_get_hnpstatus(otg_dev->core_if));
}
/**
* Set the HNP Request bit
*/
static ssize_t hnp_store(struct device *_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
uint32_t in = simple_strtoul(buf, NULL, 16);
dwc_otg_set_hnpreq(otg_dev->core_if, in);
return count;
}
DEVICE_ATTR(hnp, 0644, hnp_show, hnp_store);
/**
* @todo Add code to initiate the SRP.
*/
/**
* Show the SRP status bit
*/
static ssize_t srp_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifndef DWC_HOST_ONLY
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
return sprintf(buf, "SesReqScs = 0x%x\n",
dwc_otg_get_srpstatus(otg_dev->core_if));
#else
return sprintf(buf, "Host Only Mode!\n");
#endif
}
/**
* Set the SRP Request bit
*/
static ssize_t srp_store(struct device *_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
#ifndef DWC_HOST_ONLY
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
if (NULL != otg_dev->pcd)
dwc_otg_pcd_initiate_srp(otg_dev->pcd);
#endif
return count;
}
DEVICE_ATTR(srp, 0644, srp_show, srp_store);
/**
* @todo Need to do more for power on/off?
*/
/**
* Show the Bus Power status
*/
static ssize_t buspower_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
return sprintf(buf, "Bus Power = 0x%x\n",
dwc_otg_get_prtpower(otg_dev->core_if));
}
/**
* Set the Bus Power status
*/
static ssize_t buspower_store(struct device *_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
uint32_t on = simple_strtoul(buf, NULL, 16);
dwc_otg_set_prtpower(otg_dev->core_if, on);
return count;
}
DEVICE_ATTR(buspower, 0644, buspower_show, buspower_store);
/**
* @todo Need to do more for suspend?
*/
/**
* Show the Bus Suspend status
*/
static ssize_t bussuspend_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
return sprintf(buf, "Bus Suspend = 0x%x\n",
dwc_otg_get_prtsuspend(otg_dev->core_if));
}
/**
* Set the Bus Suspend status
*/
static ssize_t bussuspend_store(struct device *_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
uint32_t in = simple_strtoul(buf, NULL, 16);
dwc_otg_set_prtsuspend(otg_dev->core_if, in);
return count;
}
DEVICE_ATTR(bussuspend, 0644, bussuspend_show, bussuspend_store);
/**
* Show the status of Remote Wakeup.
*/
static ssize_t remote_wakeup_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifndef DWC_HOST_ONLY
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
return sprintf(buf,
"Remote Wakeup Sig = %d Enabled = %d LPM Remote Wakeup = %d\n",
dwc_otg_get_remotewakesig(otg_dev->core_if),
dwc_otg_pcd_get_rmwkup_enable(otg_dev->pcd),
dwc_otg_get_lpm_remotewakeenabled(otg_dev->core_if));
#else
return sprintf(buf, "Host Only Mode!\n");
#endif /* DWC_HOST_ONLY */
}
/**
* Initiate a remote wakeup of the host. The Device control register
* Remote Wakeup Signal bit is written if the PCD Remote wakeup enable
* flag is set.
*
*/
static ssize_t remote_wakeup_store(struct device *_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
#ifndef DWC_HOST_ONLY
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
uint32_t val = simple_strtoul(buf, NULL, 16);
if (val & 1)
dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 1);
else
dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 0);
#endif /* DWC_HOST_ONLY */
return count;
}
DEVICE_ATTR(remote_wakeup, S_IRUGO | S_IWUSR, remote_wakeup_show,
remote_wakeup_store);
/**
* Show the whether core is hibernated or not.
*/
static ssize_t rem_wakeup_pwrdn_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifndef DWC_HOST_ONLY
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
if (dwc_otg_get_core_state(otg_dev->core_if))
DWC_PRINTF("Core is in hibernation\n");
else
DWC_PRINTF("Core is not in hibernation\n");
#endif /* DWC_HOST_ONLY */
return 0;
}
/**
* Initiate a remote wakeup of the device to exit from hibernation.
*/
static ssize_t rem_wakeup_pwrdn_store(struct device *_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
#ifndef DWC_HOST_ONLY
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
dwc_otg_device_hibernation_restore(otg_dev->core_if, 1, 0);
#endif
return count;
}
DEVICE_ATTR(rem_wakeup_pwrdn, S_IRUGO | S_IWUSR, rem_wakeup_pwrdn_show,
rem_wakeup_pwrdn_store);
static ssize_t disconnect_us(struct device *_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
#ifndef DWC_HOST_ONLY
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
uint32_t val = simple_strtoul(buf, NULL, 16);
DWC_PRINTF("The Passed value is %04x\n", val);
dwc_otg_pcd_disconnect_us(otg_dev->pcd, 50);
#endif /* DWC_HOST_ONLY */
return count;
}
DEVICE_ATTR(disconnect_us, S_IWUSR, 0, disconnect_us);
/**
* Dump global registers and either host or device registers (depending on the
* current mode of the core).
*/
static ssize_t regdump_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
#ifdef CONFIG_KONA_USB_CONTROL
/* We want to be able to do this with and without
* USB-PMU-xceiver interface so use direct API
*/
bcm_hsotgctrl_en_clock(true);
dwc_otg_dump_global_registers(otg_dev->core_if);
if (dwc_otg_is_host_mode(otg_dev->core_if))
dwc_otg_dump_host_registers(otg_dev->core_if);
else
dwc_otg_dump_dev_registers(otg_dev->core_if);
bcm_hsotgctrl_en_clock(false);
#else
dwc_otg_dump_global_registers(otg_dev->core_if);
if (dwc_otg_is_host_mode(otg_dev->core_if))
dwc_otg_dump_host_registers(otg_dev->core_if);
else
dwc_otg_dump_dev_registers(otg_dev->core_if);
#endif
return sprintf(buf, "Register Dump\n");
}
DEVICE_ATTR(regdump, S_IRUGO | S_IWUSR, regdump_show, 0);
/**
* Dump global registers and either host or device registers (depending on the
* current mode of the core).
*/
static ssize_t spramdump_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
dwc_otg_dump_spram(otg_dev->core_if);
return sprintf(buf, "SPRAM Dump\n");
}
DEVICE_ATTR(spramdump, S_IRUGO | S_IWUSR, spramdump_show, 0);
/**
* Dump the current hcd state.
*/
static ssize_t hcddump_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifndef DWC_DEVICE_ONLY
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
dwc_otg_hcd_dump_state(otg_dev->hcd);
#endif /* DWC_DEVICE_ONLY */
return sprintf(buf, "HCD Dump\n");
}
DEVICE_ATTR(hcddump, S_IRUGO | S_IWUSR, hcddump_show, 0);
/**
* Dump the average frame remaining at SOF. This can be used to
* determine average interrupt latency. Frame remaining is also shown for
* start transfer and two additional sample points.
*/
static ssize_t hcd_frrem_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifndef DWC_DEVICE_ONLY
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
dwc_otg_hcd_dump_frrem(otg_dev->hcd);
#endif /* DWC_DEVICE_ONLY */
return sprintf(buf, "HCD Dump Frame Remaining\n");
}
DEVICE_ATTR(hcd_frrem, S_IRUGO | S_IWUSR, hcd_frrem_show, 0);
/**
* Displays the time required to read the GNPTXFSIZ register many times (the
* output shows the number of times the register is read).
*/
#define RW_REG_COUNT 10000000
#define MSEC_PER_JIFFIE (1000/HZ)
static ssize_t rd_reg_test_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
int i;
int time;
int start_jiffies;
pr_info("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n",
HZ, MSEC_PER_JIFFIE, loops_per_jiffy);
start_jiffies = jiffies;
for (i = 0; i < RW_REG_COUNT; i++)
dwc_otg_get_gnptxfsiz(otg_dev->core_if);
time = jiffies - start_jiffies;
return sprintf(buf,
"Time to read GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n",
RW_REG_COUNT, time * MSEC_PER_JIFFIE, time);
}
DEVICE_ATTR(rd_reg_test, S_IRUGO | S_IWUSR, rd_reg_test_show, 0);
/**
* Displays the time required to write the GNPTXFSIZ register many times (the
* output shows the number of times the register is written).
*/
static ssize_t wr_reg_test_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
uint32_t reg_val;
int i;
int time;
int start_jiffies;
pr_info("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n",
HZ, MSEC_PER_JIFFIE, loops_per_jiffy);
reg_val = dwc_otg_get_gnptxfsiz(otg_dev->core_if);
start_jiffies = jiffies;
for (i = 0; i < RW_REG_COUNT; i++)
dwc_otg_set_gnptxfsiz(otg_dev->core_if, reg_val);
time = jiffies - start_jiffies;
return sprintf(buf,
"Time to write GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n",
RW_REG_COUNT, time * MSEC_PER_JIFFIE, time);
}
DEVICE_ATTR(wr_reg_test, S_IRUGO | S_IWUSR, wr_reg_test_show, 0);
#ifdef CONFIG_USB_DWC_OTG_LPM
/**
* Show the lpm_response attribute.
*/
static ssize_t lpmresp_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
if (!dwc_otg_get_param_lpm_enable(otg_dev->core_if))
return sprintf(buf, "** LPM is DISABLED **\n");
if (!dwc_otg_is_device_mode(otg_dev->core_if))
return sprintf(buf, "** Current mode is not device mode\n");
return sprintf(buf, "lpm_response = %d\n",
dwc_otg_get_lpmresponse(otg_dev->core_if));
}
/**
* Store the lpm_response attribute.
*/
static ssize_t lpmresp_store(struct device *_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
uint32_t val = simple_strtoul(buf, NULL, 16);
if (!dwc_otg_get_param_lpm_enable(otg_dev->core_if))
return 0;
if (!dwc_otg_is_device_mode(otg_dev->core_if))
return 0;
dwc_otg_set_lpmresponse(otg_dev->core_if, val);
return count;
}
DEVICE_ATTR(lpm_response, S_IRUGO | S_IWUSR, lpmresp_show, lpmresp_store);
/**
* Show the sleep_status attribute.
*/
static ssize_t sleepstatus_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
return sprintf(buf, "Sleep Status = %d\n",
dwc_otg_get_lpm_portsleepstatus(otg_dev->core_if));
}
/**
* Store the sleep_status attribure.
*/
static ssize_t sleepstatus_store(struct device *_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
dwc_otg_core_if_t *core_if = otg_dev->core_if;
if (dwc_otg_get_lpm_portsleepstatus(otg_dev->core_if)) {
if (dwc_otg_is_host_mode(core_if)) {
DWC_PRINTF("Host initiated resume\n");
dwc_otg_set_prtresume(otg_dev->core_if, 1);
}
}
return count;
}
DEVICE_ATTR(sleep_status, S_IRUGO | S_IWUSR, sleepstatus_show,
sleepstatus_store);
#endif /* CONFIG_USB_DWC_OTG_LPM_ENABLE */
/**
* Show the value of Host mode Connection Timeout.
*/
static ssize_t h_conn_wait_tmout_show(struct device *_dev,
struct device_attribute *attr, char *buf)
{
#ifndef DWC_DEVICE_ONLY
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
return sprintf(buf, "Connection wait timeout in ms = %d\n",
otg_dev->hcd->conn_wait_timeout);
#else
return sprintf(buf, "Device Only Mode!\n");
#endif /* #ifndef DWC_DEVICE_ONLY */
}
/**
* Set the value of host mode connection timeout
*
*/
static ssize_t h_conn_wait_tmout_store(struct device *_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
#ifndef DWC_DEVICE_ONLY
#ifdef LM_INTERFACE
struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev);
dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);
#elif defined(PCI_INTERFACE)
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
#else
struct platform_device *platform_dev =
container_of(_dev, struct platform_device, dev);
dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);
#endif
otg_dev->hcd->conn_wait_timeout = simple_strtoul(buf, NULL, 10);
#endif
return count;
}
DEVICE_ATTR(h_conn_wait_tmout, S_IRUGO | S_IWUSR, h_conn_wait_tmout_show,
h_conn_wait_tmout_store);
/**@}*/
/**
* Create the device files
*/
void dwc_otg_attr_create(
#ifdef LM_INTERFACE
struct lm_device *dev
#elif defined(PCI_INTERFACE)
struct pci_dev *dev
#else
struct platform_device *dev
#endif
)
{
int error;
error = device_create_file(&dev->dev, &dev_attr_regoffset);
error = device_create_file(&dev->dev, &dev_attr_regvalue);
error = device_create_file(&dev->dev, &dev_attr_mode);
error = device_create_file(&dev->dev, &dev_attr_hnpcapable);
error = device_create_file(&dev->dev, &dev_attr_srpcapable);
error = device_create_file(&dev->dev, &dev_attr_hsic_connect);
error = device_create_file(&dev->dev, &dev_attr_inv_sel_hsic);
error = device_create_file(&dev->dev, &dev_attr_hnp);
error = device_create_file(&dev->dev, &dev_attr_srp);
error = device_create_file(&dev->dev, &dev_attr_buspower);
error = device_create_file(&dev->dev, &dev_attr_bussuspend);
error = device_create_file(&dev->dev, &dev_attr_busconnected);
error = device_create_file(&dev->dev, &dev_attr_gotgctl);
error = device_create_file(&dev->dev, &dev_attr_gusbcfg);
error = device_create_file(&dev->dev, &dev_attr_grxfsiz);
error = device_create_file(&dev->dev, &dev_attr_gnptxfsiz);
error = device_create_file(&dev->dev, &dev_attr_gpvndctl);
error = device_create_file(&dev->dev, &dev_attr_ggpio);
error = device_create_file(&dev->dev, &dev_attr_guid);
error = device_create_file(&dev->dev, &dev_attr_gsnpsid);
error = device_create_file(&dev->dev, &dev_attr_devspeed);
error = device_create_file(&dev->dev, &dev_attr_enumspeed);
error = device_create_file(&dev->dev, &dev_attr_hptxfsiz);
error = device_create_file(&dev->dev, &dev_attr_hprt0);
error = device_create_file(&dev->dev, &dev_attr_remote_wakeup);
error = device_create_file(&dev->dev, &dev_attr_rem_wakeup_pwrdn);
error = device_create_file(&dev->dev, &dev_attr_disconnect_us);
error = device_create_file(&dev->dev, &dev_attr_regdump);
error = device_create_file(&dev->dev, &dev_attr_spramdump);
error = device_create_file(&dev->dev, &dev_attr_hcddump);
error = device_create_file(&dev->dev, &dev_attr_hcd_frrem);
error = device_create_file(&dev->dev, &dev_attr_rd_reg_test);
error = device_create_file(&dev->dev, &dev_attr_wr_reg_test);
#ifdef CONFIG_USB_DWC_OTG_LPM
error = device_create_file(&dev->dev, &dev_attr_lpm_response);
error = device_create_file(&dev->dev, &dev_attr_sleep_status);
#endif
error = device_create_file(&dev->dev, &dev_attr_h_conn_wait_tmout);
}
/**
* Remove the device files
*/
void dwc_otg_attr_remove(
#ifdef LM_INTERFACE
struct lm_device *dev
#elif defined(PCI_INTERFACE)
struct pci_dev *dev
#else
struct platform_device *dev
#endif
)
{
device_remove_file(&dev->dev, &dev_attr_regoffset);
device_remove_file(&dev->dev, &dev_attr_regvalue);
device_remove_file(&dev->dev, &dev_attr_mode);
device_remove_file(&dev->dev, &dev_attr_hnpcapable);
device_remove_file(&dev->dev, &dev_attr_srpcapable);
device_remove_file(&dev->dev, &dev_attr_hsic_connect);
device_remove_file(&dev->dev, &dev_attr_inv_sel_hsic);
device_remove_file(&dev->dev, &dev_attr_hnp);
device_remove_file(&dev->dev, &dev_attr_srp);
device_remove_file(&dev->dev, &dev_attr_buspower);
device_remove_file(&dev->dev, &dev_attr_bussuspend);
device_remove_file(&dev->dev, &dev_attr_busconnected);
device_remove_file(&dev->dev, &dev_attr_gotgctl);
device_remove_file(&dev->dev, &dev_attr_gusbcfg);
device_remove_file(&dev->dev, &dev_attr_grxfsiz);
device_remove_file(&dev->dev, &dev_attr_gnptxfsiz);
device_remove_file(&dev->dev, &dev_attr_gpvndctl);
device_remove_file(&dev->dev, &dev_attr_ggpio);
device_remove_file(&dev->dev, &dev_attr_guid);
device_remove_file(&dev->dev, &dev_attr_gsnpsid);
device_remove_file(&dev->dev, &dev_attr_devspeed);
device_remove_file(&dev->dev, &dev_attr_enumspeed);
device_remove_file(&dev->dev, &dev_attr_hptxfsiz);
device_remove_file(&dev->dev, &dev_attr_hprt0);
device_remove_file(&dev->dev, &dev_attr_remote_wakeup);
device_remove_file(&dev->dev, &dev_attr_rem_wakeup_pwrdn);
device_remove_file(&dev->dev, &dev_attr_disconnect_us);
device_remove_file(&dev->dev, &dev_attr_regdump);
device_remove_file(&dev->dev, &dev_attr_spramdump);
device_remove_file(&dev->dev, &dev_attr_hcddump);
device_remove_file(&dev->dev, &dev_attr_hcd_frrem);
device_remove_file(&dev->dev, &dev_attr_rd_reg_test);
device_remove_file(&dev->dev, &dev_attr_wr_reg_test);
#ifdef CONFIG_USB_DWC_OTG_LPM
device_remove_file(&dev->dev, &dev_attr_lpm_response);
device_remove_file(&dev->dev, &dev_attr_sleep_status);
#endif
device_remove_file(&dev->dev, &dev_attr_h_conn_wait_tmout);
}
/**
* This function handles the OTG Interrupts. It reads the OTG
* Interrupt Register (GOTGINT) to determine what interrupt has
* occurred.
*
* @param core_if Programming view of DWC_otg controller.
*/
int32_t dwc_otg_handle_otg_intr(dwc_otg_core_if_t * core_if)
{
dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
gotgint_data_t gotgint;
gotgctl_data_t gotgctl;
gintmsk_data_t gintmsk;
gpwrdn_data_t gpwrdn;
gotgint.d32 = DWC_READ_REG32(&global_regs->gotgint);
gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
DWC_DEBUGPL(DBG_CIL, "++OTG Interrupt gotgint=%0x [%s]\n", gotgint.d32,
op_state_str(core_if));
if (gotgint.b.sesenddet) {
DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
"Session End Detected++ (%s)\n",
op_state_str(core_if));
gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
if (core_if->op_state == B_HOST) {
cil_pcd_start(core_if);
core_if->op_state = B_PERIPHERAL;
} else {
/* If not B_HOST and Device HNP still set. HNP
* Did not succeed!*/
if (gotgctl.b.devhnpen) {
DWC_DEBUGPL(DBG_ANY, "Session End Detected\n");
__DWC_ERROR("Device Not Connected/Responding!\n");
}
/* If Session End Detected the B-Cable has
* been disconnected. */
/* Reset PCD and Gadget driver to a
* clean state. */
core_if->lx_state = DWC_OTG_L0;
DWC_SPINUNLOCK(core_if->lock);
cil_pcd_stop(core_if);
DWC_SPINLOCK(core_if->lock);
if (core_if->adp_enable) {
if (core_if->power_down == 2) {
gpwrdn.d32 = 0;
gpwrdn.b.pwrdnswtch = 1;
DWC_MODIFY_REG32(&core_if->
core_global_regs->
gpwrdn, gpwrdn.d32, 0);
}
gpwrdn.d32 = 0;
gpwrdn.b.pmuintsel = 1;
gpwrdn.b.pmuactv = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->
gpwrdn, 0, gpwrdn.d32);
dwc_otg_adp_sense_start(core_if);
}
}
gotgctl.d32 = 0;
gotgctl.b.devhnpen = 1;
DWC_MODIFY_REG32(&global_regs->gotgctl, gotgctl.d32, 0);
}
if (gotgint.b.sesreqsucstschng) {
DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
"Session Reqeust Success Status Change++\n");
gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
if (gotgctl.b.sesreqscs) {
if ((core_if->core_params->phy_type ==
DWC_PHY_TYPE_PARAM_FS) && (core_if->core_params->i2c_enable)) {
core_if->srp_success = 1;
} else {
DWC_SPINUNLOCK(core_if->lock);
cil_pcd_resume(core_if);
DWC_SPINLOCK(core_if->lock);
/* Clear Session Request */
gotgctl.d32 = 0;
gotgctl.b.sesreq = 1;
DWC_MODIFY_REG32(&global_regs->gotgctl,
gotgctl.d32, 0);
}
}
}
if (gotgint.b.hstnegsucstschng) {
/* Print statements during the HNP interrupt handling
* can cause it to fail.*/
gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
/* WA for 3.00a- HW is not setting cur_mode, even sometimes
* this does not help*/
if (core_if->snpsid >= OTG_CORE_REV_3_00a)
dwc_udelay(100);
if (gotgctl.b.hstnegscs) {
if (dwc_otg_is_host_mode(core_if)) {
core_if->op_state = B_HOST;
/*
* Need to disable SOF interrupt immediately.
* When switching from device to host, the PCD
* interrupt handler won't handle the
* interrupt if host mode is already set. The
* HCD interrupt handler won't get called if
* the HCD state is HALT. This means that the
* interrupt does not get handled and Linux
* complains loudly.
*/
gintmsk.d32 = 0;
gintmsk.b.sofintr = 1;
DWC_MODIFY_REG32(&global_regs->gintmsk,
gintmsk.d32, 0);
/* Call callback function with spin lock released */
DWC_SPINUNLOCK(core_if->lock);
cil_pcd_stop(core_if);
/*
* Initialize the Core for Host mode.
*/
cil_hcd_start(core_if);
DWC_SPINLOCK(core_if->lock);
core_if->op_state = B_HOST;
}
} else {
gotgctl.d32 = 0;
gotgctl.b.hnpreq = 1;
gotgctl.b.devhnpen = 1;
DWC_MODIFY_REG32(&global_regs->gotgctl, gotgctl.d32, 0);
DWC_DEBUGPL(DBG_ANY, "HNP Failed\n");
__DWC_ERROR("Device Not Connected/Responding\n");
}
}
if (gotgint.b.hstnegdet) {
/* The disconnect interrupt is set at the same time as
* Host Negotiation Detected. During the mode
* switch all interrupts are cleared so the disconnect
* interrupt handler will not get executed.
*/
DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
"Host Negotiation Detected++ (%s)\n",
(dwc_otg_is_host_mode(core_if) ? "Host" :
"Device"));
if (dwc_otg_is_device_mode(core_if)) {
DWC_DEBUGPL(DBG_ANY, "a_suspend->a_peripheral (%d)\n",
core_if->op_state);
DWC_SPINUNLOCK(core_if->lock);
cil_hcd_disconnect(core_if);
cil_pcd_start(core_if);
DWC_SPINLOCK(core_if->lock);
core_if->op_state = A_PERIPHERAL;
} else {
/*
* Need to disable SOF interrupt immediately. When
* switching from device to host, the PCD interrupt
* handler won't handle the interrupt if host mode is
* already set. The HCD interrupt handler won't get
* called if the HCD state is HALT. This means that
* the interrupt does not get handled and Linux
* complains loudly.
*/
gintmsk.d32 = 0;
gintmsk.b.sofintr = 1;
DWC_MODIFY_REG32(&global_regs->gintmsk, gintmsk.d32, 0);
DWC_SPINUNLOCK(core_if->lock);
cil_pcd_stop(core_if);
cil_hcd_start(core_if);
DWC_SPINLOCK(core_if->lock);
core_if->op_state = A_HOST;
}
}
if (gotgint.b.adevtoutchng) {
DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
"A-Device Timeout Change++\n");
}
if (gotgint.b.debdone) {
DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: " "Debounce Done++\n");
}
/* Clear GOTGINT */
DWC_WRITE_REG32(&core_if->core_global_regs->gotgint, gotgint.d32);
return 1;
}
void w_conn_id_status_change(void *p)
{
dwc_otg_core_if_t *core_if = p;
uint32_t count = 0;
gotgctl_data_t gotgctl = {.d32 = 0 };
gotgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
DWC_DEBUGPL(DBG_CIL, "gotgctl=%0x\n", gotgctl.d32);
DWC_DEBUGPL(DBG_CIL, "gotgctl.b.conidsts=%d\n", gotgctl.b.conidsts);
/* B-Device connector (Device Mode) */
if (gotgctl.b.conidsts) {
/* Wait for switch to device mode. */
while (!dwc_otg_is_device_mode(core_if)) {
DWC_PRINTF("Waiting for Peripheral Mode, Mode=%s\n",
(dwc_otg_is_host_mode(core_if) ? "Host" :
"Peripheral"));
dwc_mdelay(100);
if (++count > 10000)
break;
}
DWC_ASSERT(++count < 10000,
"Connection id status change timed out");
core_if->op_state = B_PERIPHERAL;
#if defined(CONFIG_BATTERY_NXE2000)
otgid_power_control_by_dwc(0);
#elif defined(CONFIG_KP_AXP22)
axp_otg_power_control(0);
#endif
dwc_otg_set_prtpower(core_if, 0);
core_if->host_flag = 0;
dwc_otg_core_init(core_if);
dwc_otg_enable_global_interrupts(core_if);
cil_pcd_start(core_if);
} else {
/* A-Device connector (Host Mode) */
while (!dwc_otg_is_host_mode(core_if)) {
DWC_PRINTF("Waiting for Host Mode, Mode=%s\n",
(dwc_otg_is_host_mode(core_if) ? "Host" :
"Peripheral"));
dwc_mdelay(100);
if (++count > 10000)
break;
}
DWC_ASSERT(++count < 10000,
"Connection id status change timed out");
core_if->op_state = A_HOST;
/*
* Initialize the Core for Host mode.
*/
core_if->host_flag = 1;
dwc_otg_core_init(core_if);
dwc_otg_enable_global_interrupts(core_if);
cil_hcd_start(core_if);
}
}
/**
* This function handles the Connector ID Status Change Interrupt. It
* reads the OTG Interrupt Register (GOTCTL) to determine whether this
* is a Device to Host Mode transition or a Host Mode to Device
* Transition.
*
* This only occurs when the cable is connected/removed from the PHY
* connector.
*
* @param core_if Programming view of DWC_otg controller.
*/
int32_t dwc_otg_handle_conn_id_status_change_intr(dwc_otg_core_if_t * core_if)
{
/*
* Need to disable SOF interrupt immediately. If switching from device
* to host, the PCD interrupt handler won't handle the interrupt if
* host mode is already set. The HCD interrupt handler won't get
* called if the HCD state is HALT. This means that the interrupt does
* not get handled and Linux complains loudly.
*/
gintmsk_data_t gintmsk = {.d32 = 0 };
gintsts_data_t gintsts = {.d32 = 0 };
gintmsk.b.sofintr = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
DWC_DEBUGPL(DBG_CIL,
" ++Connector ID Status Change Interrupt++ (%s)\n",
(dwc_otg_is_host_mode(core_if) ? "Host" : "Device"));
DWC_SPINUNLOCK(core_if->lock);
/*
* Need to schedule a work, as there are possible DELAY function calls
* Release lock before scheduling workq as it holds spinlock during scheduling
*/
DWC_WORKQ_SCHEDULE(core_if->wq_otg, w_conn_id_status_change,
core_if, "connection id status change");
DWC_SPINLOCK(core_if->lock);
/* Set flag and clear interrupt */
gintsts.b.conidstschng = 1;
DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
return 1;
}
/**
* This interrupt indicates that a device is initiating the Session
* Request Protocol to request the host to turn on bus power so a new
* session can begin. The handler responds by turning on bus power. If
* the DWC_otg controller is in low power mode, the handler brings the
* controller out of low power mode before turning on bus power.
*
* @param core_if Programming view of DWC_otg controller.
*/
int32_t dwc_otg_handle_session_req_intr(dwc_otg_core_if_t * core_if)
{
gintsts_data_t gintsts;
#ifndef DWC_HOST_ONLY
DWC_DEBUGPL(DBG_ANY, "++Session Request Interrupt++\n");
if (dwc_otg_is_device_mode(core_if)) {
DWC_PRINTF("SRP: Device mode\n");
} else {
hprt0_data_t hprt0;
DWC_PRINTF("SRP: Host mode\n");
/* Turn on the port power bit. */
hprt0.d32 = dwc_otg_read_hprt0(core_if);
hprt0.b.prtpwr = 1;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
/* Start the Connection timer. So a message can be displayed
* if connect does not occur within 10 seconds. */
cil_hcd_session_start(core_if);
}
#endif
/* Clear interrupt */
gintsts.d32 = 0;
gintsts.b.sessreqintr = 1;
DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
return 1;
}
void w_wakeup_detected(void *p)
{
dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) p;
/*
* Clear the Resume after 70ms. (Need 20 ms minimum. Use 70 ms
* so that OPT tests pass with all PHYs).
*/
hprt0_data_t hprt0 = {.d32 = 0 };
#if 0
pcgcctl_data_t pcgcctl = {.d32 = 0 };
/* Restart the Phy Clock */
pcgcctl.b.stoppclk = 1;
DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
dwc_udelay(10);
#endif //0
hprt0.d32 = dwc_otg_read_hprt0(core_if);
DWC_DEBUGPL(DBG_ANY, "Resume: HPRT0=%0x\n", hprt0.d32);
// dwc_mdelay(70);
hprt0.b.prtres = 0; /* Resume */
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
DWC_DEBUGPL(DBG_ANY, "Clear Resume: HPRT0=%0x\n",
DWC_READ_REG32(core_if->host_if->hprt0));
cil_hcd_resume(core_if);
/** Change to L0 state*/
core_if->lx_state = DWC_OTG_L0;
}
/**
* This interrupt indicates that the DWC_otg controller has detected a
* resume or remote wakeup sequence. If the DWC_otg controller is in
* low power mode, the handler must brings the controller out of low
* power mode. The controller automatically begins resume
* signaling. The handler schedules a time to stop resume signaling.
*/
int32_t dwc_otg_handle_wakeup_detected_intr(dwc_otg_core_if_t * core_if)
{
gintsts_data_t gintsts;
DWC_DEBUGPL(DBG_ANY,
"++Resume and Remote Wakeup Detected Interrupt++\n");
DWC_PRINTF("%s lxstate = %d\n", __func__, core_if->lx_state);
if (dwc_otg_is_device_mode(core_if)) {
dctl_data_t dctl = {.d32 = 0 };
DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n",
DWC_READ_REG32(&core_if->dev_if->dev_global_regs->
dsts));
if (core_if->lx_state == DWC_OTG_L2) {
#ifdef PARTIAL_POWER_DOWN
if (core_if->hwcfg4.b.power_optimiz) {
pcgcctl_data_t power = {.d32 = 0 };
power.d32 = DWC_READ_REG32(core_if->pcgcctl);
DWC_DEBUGPL(DBG_CIL, "PCGCCTL=%0x\n",
power.d32);
power.b.stoppclk = 0;
DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
power.b.pwrclmp = 0;
DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
power.b.rstpdwnmodule = 0;
DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
}
#endif
/* Clear the Remote Wakeup Signaling */
dctl.b.rmtwkupsig = 1;
DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
dctl, dctl.d32, 0);
DWC_SPINUNLOCK(core_if->lock);
if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
}
DWC_SPINLOCK(core_if->lock);
} else {
glpmcfg_data_t lpmcfg;
lpmcfg.d32 =
DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
lpmcfg.b.hird_thres &= (~(1 << 4));
DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg,
lpmcfg.d32);
}
/** Change to L0 state*/
core_if->lx_state = DWC_OTG_L0;
} else {
if (core_if->lx_state != DWC_OTG_L1) {
pcgcctl_data_t pcgcctl = {.d32 = 0 };
/* Restart the Phy Clock */
pcgcctl.b.stoppclk = 1;
DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
DWC_TIMER_SCHEDULE(core_if->wkp_timer, 71);
} else {
/** Change to L0 state*/
core_if->lx_state = DWC_OTG_L0;
}
}
void w_conn_id_status_change(void *p)
{
dwc_otg_core_if_t *core_if = p;
uint32_t count = 0;
gotgctl_data_t gotgctl = {.d32 = 0 };
gotgctl.d32 = dwc_read_reg32(&core_if->core_global_regs->gotgctl);
DWC_DEBUGPL(DBG_CIL, "gotgctl=%0x\n", gotgctl.d32);
DWC_DEBUGPL(DBG_CIL, "gotgctl.b.conidsts=%d\n", gotgctl.b.conidsts);
/* B-Device connector (Device Mode) */
if (gotgctl.b.conidsts) {
/* Wait for switch to device mode. */
while (!dwc_otg_is_device_mode(core_if)) {
DWC_PRINTF("Waiting for Peripheral Mode, Mode=%s\n",
(dwc_otg_is_host_mode(core_if) ? "Host" :
"Peripheral"));
dwc_mdelay(100);
if (++count > 10000)
break;
}
DWC_ASSERT(++count < 10000,
"Connection id status change timed out");
#ifdef CONFIG_USB_OTG_UTILS
if (core_if->xceiver->otg->set_vbus)
core_if->xceiver->otg->set_vbus(core_if->xceiver->otg, false);
#endif
core_if->op_state = B_PERIPHERAL;
dwc_otg_core_init(core_if);
dwc_otg_enable_global_interrupts(core_if);
cil_pcd_start(core_if);
} else {
/* A-Device connector (Host Mode) */
while (!dwc_otg_is_host_mode(core_if)) {
DWC_PRINTF("Waiting for Host Mode, Mode=%s\n",
(dwc_otg_is_host_mode(core_if) ? "Host" :
"Peripheral"));
dwc_mdelay(100);
if (++count > 10000)
break;
}
DWC_ASSERT(++count < 10000,
"Connection id status change timed out");
core_if->op_state = A_HOST;
/*
* Initialize the Core for Host mode.
*/
dwc_otg_core_init(core_if);
dwc_otg_enable_global_interrupts(core_if);
cil_hcd_start(core_if);
}
}
/**
* This function handles the Connector ID Status Change Interrupt. It
* reads the OTG Interrupt Register (GOTCTL) to determine whether this
* is a Device to Host Mode transition or a Host Mode to Device
* Transition.
*
* This only occurs when the cable is connected/removed from the PHY
* connector.
*
* @param core_if Programming view of DWC_otg controller.
*/
int32_t dwc_otg_handle_conn_id_status_change_intr(dwc_otg_core_if_t *core_if)
{
/*
* Need to disable SOF interrupt immediately. If switching from device
* to host, the PCD interrupt handler won't handle the interrupt if
* host mode is already set. The HCD interrupt handler won't get
* called if the HCD state is HALT. This means that the interrupt does
* not get handled and Linux complains loudly.
*/
gintmsk_data_t gintmsk = {.d32 = 0 };
gintsts_data_t gintsts = {.d32 = 0 };
gintmsk.b.sofintr = 1;
dwc_modify_reg32(&core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
DWC_DEBUGPL(DBG_CIL,
" ++Connector ID Status Change Interrupt++ (%s)\n",
(dwc_otg_is_host_mode(core_if) ? "Host" : "Device"));
/*
* Need to schedule a work, as there are possible DELAY function calls
*/
DWC_WORKQ_SCHEDULE(core_if->wq_otg, w_conn_id_status_change,
core_if, "connection id status change");
/* Set flag and clear interrupt */
gintsts.b.conidstschng = 1;
dwc_write_reg32(&core_if->core_global_regs->gintsts, gintsts.d32);
return 1;
}
/**
* This interrupt indicates that a device is initiating the Session
* Request Protocol to request the host to turn on bus power so a new
* session can begin. The handler responds by turning on bus power. If
* the DWC_otg controller is in low power mode, the handler brings the
* controller out of low power mode before turning on bus power.
*
* @param core_if Programming view of DWC_otg controller.
*/
int32_t dwc_otg_handle_session_req_intr(dwc_otg_core_if_t *core_if)
{
hprt0_data_t hprt0;
gintsts_data_t gintsts;
#ifndef DWC_HOST_ONLY
DWC_DEBUGPL(DBG_ANY, "++Session Request Interrupt++\n");
if (dwc_otg_is_device_mode(core_if)) {
DWC_PRINTF("SRP: Device mode\n");
} else {
DWC_PRINTF("SRP: Host mode\n");
/* Turn on the port power bit. */
hprt0.d32 = dwc_otg_read_hprt0(core_if);
hprt0.b.prtpwr = 1;
dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
#ifdef CONFIG_USB_OTG
if (core_if->core_params->otg_supp_enable) {
/* Schedule a work item to init the core */
DWC_WORKQ_SCHEDULE(core_if->wq_otg, w_init_core,
core_if, "SRP detected");
} else
#endif
{
/* Start the Connection timer. So a message can be displayed
* if connect does not occur within connection wait timeout */
cil_hcd_session_start(core_if);
}
}
#endif
/* Clear interrupt */
gintsts.d32 = 0;
gintsts.b.sessreqintr = 1;
dwc_write_reg32(&core_if->core_global_regs->gintsts, gintsts.d32);
return 1;
}
void w_wakeup_detected(void *p)
{
dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *)p;
/*
* Clear the Resume after 70ms. (Need 20 ms minimum. Use 70 ms
* so that OPT tests pass with all PHYs).
*/
hprt0_data_t hprt0 = {.d32 = 0 };
#if 0
pcgcctl_data_t pcgcctl = {.d32 = 0 };
/* Restart the Phy Clock */
pcgcctl.b.stoppclk = 1;
dwc_modify_reg32(core_if->pcgcctl, pcgcctl.d32, 0);
dwc_udelay(10);
#endif /*0 */
hprt0.d32 = dwc_otg_read_hprt0(core_if);
DWC_DEBUGPL(DBG_ANY, "Resume: HPRT0=%0x\n", hprt0.d32);
/* dwc_mdelay(70); */
hprt0.b.prtres = 0; /* Resume */
dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
DWC_DEBUGPL(DBG_ANY, "Clear Resume: HPRT0=%0x\n",
dwc_read_reg32(core_if->host_if->hprt0));
cil_hcd_resume(core_if);
/** Change to L0 state*/
core_if->lx_state = DWC_OTG_L0;
}
void w_a_periph_done(void *p)
{
dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *)p;
if (core_if->op_state == A_PERIPHERAL) {
/* Clear the a_peripheral flag, back to a_host. */
cil_pcd_stop(core_if);
cil_hcd_start(core_if);
core_if->op_state = A_HOST;
}
}
void w_peri_suspend_powersaving(void *p)
{
dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *)p;
if (core_if) {
/* Clear DWC Core interrupts before PHY suspend,
this is because to prevent DWC core Hangs while
accessing some registers with PHY suspended if at
all we get some core interrupts when phy in suspend*/
/* Clear any pending OTG Interrupts */
dwc_write_reg32(&core_if->core_global_regs->gotgint, 0xFFFFFFFF);
/* Clear any pending interrupts */
dwc_write_reg32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
dwc_otg_disable_global_interrupts(core_if);
/* Suspend trasceiver */
usb_phy_set_suspend(core_if->xceiver, 1);
}
}
/**
* This function handles the Connector ID Status Change Interrupt. It
* reads the OTG Interrupt Register (GOTCTL) to determine whether this
* is a Device to Host Mode transition or a Host Mode to Device
* Transition.
*
* This only occurs when the cable is connected/removed from the PHY
* connector.
*
* @param _core_if Programming view of DWC_otg controller.
*/
int32_t dwc_otg_handle_conn_id_status_change_intr(dwc_otg_core_if_t *
_core_if)
{
uint32_t count = 0;
gintsts_data_t gintsts = {.d32 = 0};
gintmsk_data_t gintmsk = {.d32 = 0};
gotgctl_data_t gotgctl = {.d32 = 0};
/*
* Need to disable SOF interrupt immediately. If switching from device
* to host, the PCD interrupt handler won't handle the interrupt if
* host mode is already set. The HCD interrupt handler won't get
* called if the HCD state is HALT. This means that the interrupt does
* not get handled and Linux complains loudly.
*/
gintmsk.b.sofintr = 1;
dwc_modify_reg32(&_core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
DWC_DEBUGPL(DBG_CIL,
" ++Connector ID Status Change Interrupt++ (%s)\n",
(dwc_otg_is_host_mode(_core_if) ? "Host" : "Device"));
gotgctl.d32 = dwc_read_reg32(&_core_if->core_global_regs->gotgctl);
DWC_DEBUGPL(DBG_CIL, "gotgctl=%0x\n", gotgctl.d32);
DWC_DEBUGPL(DBG_CIL, "gotgctl.b.conidsts=%d\n", gotgctl.b.conidsts);
/* B-Device connector (Device Mode) */
if (gotgctl.b.conidsts) {
/* Wait for switch to device mode. */
while (!dwc_otg_is_device_mode(_core_if)) {
DWC_PRINT("Waiting for Peripheral Mode, Mode=%s\n",
(dwc_otg_is_host_mode(_core_if) ? "Host" :
"Peripheral"));
MDELAY(100);
if (++count > 10000)
*(uint32_t *) NULL = 0;
}
_core_if->op_state = B_PERIPHERAL;
dwc_otg_core_init(_core_if);
dwc_otg_enable_global_interrupts(_core_if);
pcd_start(_core_if);
} else {
/* A-Device connector (Host Mode) */
while (!dwc_otg_is_host_mode(_core_if)) {
DWC_PRINT("Waiting for Host Mode, Mode=%s\n",
(dwc_otg_is_host_mode(_core_if) ? "Host" :
"Peripheral"));
MDELAY(100);
if (++count > 10000)
*(uint32_t *) NULL = 0;
}
_core_if->op_state = A_HOST;
/*
* Initialize the Core for Host mode.
*/
dwc_otg_core_init(_core_if);
dwc_otg_enable_global_interrupts(_core_if);
hcd_start(_core_if);
}
/* Set flag and clear interrupt */
gintsts.b.conidstschng = 1;
dwc_write_reg32(&_core_if->core_global_regs->gintsts, gintsts.d32);
return 1;
}
/**
* This interrupt indicates that a device is initiating the Session
* Request Protocol to request the host to turn on bus power so a new
* session can begin. The handler responds by turning on bus power. If
* the DWC_otg controller is in low power mode, the handler brings the
* controller out of low power mode before turning on bus power.
*
* @param _core_if Programming view of DWC_otg controller.
*/
int32_t dwc_otg_handle_session_req_intr(dwc_otg_core_if_t * _core_if)
{
gintsts_data_t gintsts;
#ifndef DWC_HOST_ONLY
hprt0_data_t hprt0;
DWC_DEBUGPL(DBG_ANY, "++Session Request Interrupt++\n");
if (dwc_otg_is_device_mode(_core_if)) {
DWC_PRINT("SRP: Device mode\n");
} else {
DWC_PRINT("SRP: Host mode\n");
/* Turn on the port power bit. */
hprt0.d32 = dwc_otg_read_hprt0(_core_if);
hprt0.b.prtpwr = 1;
dwc_write_reg32(_core_if->host_if->hprt0, hprt0.d32);
/* Start the Connection timer. So a message can be displayed
* if connect does not occur within 10 seconds. */
hcd_session_start(_core_if);
}
#endif /* */
/* Clear interrupt */
gintsts.d32 = 0;
gintsts.b.sessreqintr = 1;
dwc_write_reg32(&_core_if->core_global_regs->gintsts, gintsts.d32);
return 1;
}
/**
* This interrupt indicates that the DWC_otg controller has detected a
* resume or remote wakeup sequence. If the DWC_otg controller is in
* low power mode, the handler must brings the controller out of low
* power mode. The controller automatically begins resume
* signaling. The handler schedules a time to stop resume signaling.
*/
int32_t dwc_otg_handle_wakeup_detected_intr(dwc_otg_core_if_t * _core_if)
{
gintsts_data_t gintsts;
DWC_DEBUGPL(DBG_ANY,"++Resume and Remote Wakeup Detected Interrupt++\n");
if (dwc_otg_is_device_mode(_core_if)) {
dctl_data_t dctl = {.d32 = 0};
DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n",
dwc_read_reg32(&_core_if->dev_if->dev_global_regs->dsts));
#ifdef PARTIAL_POWER_DOWN
if (_core_if->hwcfg4.b.power_optimiz) {
pcgcctl_data_t power = {.d32 = 0};
power.d32 = dwc_read_reg32(_core_if->pcgcctl);
DWC_DEBUGPL(DBG_CIL, "PCGCCTL=%0x\n", power.d32);
power.b.stoppclk = 0;
dwc_write_reg32(_core_if->pcgcctl, power.d32);
power.b.pwrclmp = 0;
dwc_write_reg32(_core_if->pcgcctl, power.d32);
power.b.rstpdwnmodule = 0;
dwc_write_reg32(_core_if->pcgcctl, power.d32);
}
#endif /* */
/* Clear the Remote Wakeup Signalling */
dctl.b.rmtwkupsig = 1;
dwc_modify_reg32(&_core_if->dev_if->dev_global_regs->dctl,
dctl.d32, 0);
if (_core_if->pcd_cb && _core_if->pcd_cb->resume_wakeup) {
_core_if->pcd_cb->resume_wakeup(_core_if->pcd_cb->p);
}
} else {
/*
* Clear the Resume after 70ms. (Need 20 ms minimum. Use 70 ms
* so that OPT tests pass with all PHYs).
*/
hprt0_data_t hprt0 = {.d32 = 0};
pcgcctl_data_t pcgcctl = {.d32 = 0};
/* Restart the Phy Clock */
pcgcctl.b.stoppclk = 1;
dwc_modify_reg32(_core_if->pcgcctl, pcgcctl.d32, 0);
UDELAY(10);
/* Now wait for 70 ms. */
hprt0.d32 = dwc_otg_read_hprt0(_core_if);
DWC_DEBUGPL(DBG_ANY, "Resume: HPRT0=%0x\n", hprt0.d32);
MDELAY(70);
hprt0.b.prtres = 0; /* Resume */
dwc_write_reg32(_core_if->host_if->hprt0, hprt0.d32);
DWC_DEBUGPL(DBG_ANY, "Clear Resume: HPRT0=%0x\n",
dwc_read_reg32(_core_if->host_if->hprt0));
}
/* Clear interrupt */
gintsts.d32 = 0;
gintsts.b.wkupintr = 1;
dwc_write_reg32(&_core_if->core_global_regs->gintsts, gintsts.d32);
return 1;
}
/**
* This interrupt indicates that a device has been disconnected from
* the root port.
*/
int32_t dwc_otg_handle_disconnect_intr(dwc_otg_core_if_t * _core_if)
{
gintsts_data_t gintsts;
printk(KERN_ERR " Disconnect Detected Interrupt++ (%s) %s\n",
(dwc_otg_is_host_mode(_core_if) ? "Host" : "Device"),
op_state_str(_core_if));
DWC_DEBUGPL(DBG_ANY, "++Disconnect Detected Interrupt++ (%s) %s\n",
(dwc_otg_is_host_mode(_core_if) ? "Host" : "Device"),
op_state_str(_core_if));
/** @todo Consolidate this if statement. */
#ifndef DWC_HOST_ONLY
if (_core_if->op_state == B_HOST) {
/* If in device mode Disconnect and stop the HCD, then
* start the PCD. */
hcd_disconnect(_core_if);
pcd_start(_core_if);
_core_if->op_state = B_PERIPHERAL;
} else if (dwc_otg_is_device_mode(_core_if)) {
gotgctl_data_t gotgctl = {.d32 = 0};
gotgctl.d32 = dwc_read_reg32(&_core_if->core_global_regs->gotgctl);
if (gotgctl.b.hstsethnpen == 1) {
/* Do nothing, if HNP in process the OTG
* interrupt "Host Negotiation Detected"
* interrupt will do the mode switch.
*/
} else if (gotgctl.b.devhnpen == 0) {
/* If in device mode Disconnect and stop the HCD, then
* start the PCD. */
hcd_disconnect(_core_if);
pcd_start(_core_if);
_core_if->op_state = B_PERIPHERAL;
} else {
DWC_DEBUGPL(DBG_ANY, "!a_peripheral && !devhnpen\n");
}
} else {
if (_core_if->op_state == A_HOST) {
/* A-Cable still connected but device disconnected. */
hcd_disconnect(_core_if);
}
}
#endif /* */
gintsts.d32 = 0;
gintsts.b.disconnect = 1;
dwc_write_reg32(&_core_if->core_global_regs->gintsts, gintsts.d32);
return 1;
}
/**
* This interrupt indicates that SUSPEND state has been detected on
* the USB.
*
* For HNP the USB Suspend interrupt signals the change from
* "a_peripheral" to "a_host".
*
* When power management is enabled the core will be put in low power
* mode.
*/
int32_t dwc_otg_handle_usb_suspend_intr(dwc_otg_core_if_t * _core_if)
{
dsts_data_t dsts;
gintsts_data_t gintsts;
DWC_DEBUGPL(DBG_ANY, "USB SUSPEND\n");
if (dwc_otg_is_device_mode(_core_if)) {
/* Check the Device status register to determine if the Suspend
* state is active. */
dsts.d32 = dwc_read_reg32(&_core_if->dev_if->dev_global_regs->dsts);
DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n", dsts.d32);
DWC_DEBUGPL(DBG_PCD, "DSTS.Suspend Status=%d "
"HWCFG4.power Optimize=%d\n", dsts.b.suspsts,
_core_if->hwcfg4.b.power_optimiz);
#ifdef PARTIAL_POWER_DOWN
/** @todo Add a module parameter for power management. */
if (dsts.b.suspsts && _core_if->hwcfg4.b.power_optimiz) {
pcgcctl_data_t power = {.d32 = 0};
DWC_DEBUGPL(DBG_CIL, "suspend\n");
power.b.pwrclmp = 1;
dwc_write_reg32(_core_if->pcgcctl, power.d32);
power.b.rstpdwnmodule = 1;
dwc_modify_reg32(_core_if->pcgcctl, 0, power.d32);
power.b.stoppclk = 1;
dwc_modify_reg32(_core_if->pcgcctl, 0, power.d32);
} else {
DWC_DEBUGPL(DBG_ANY, "disconnect?\n");
}
#endif /* */
/* PCD callback for suspend. */
pcd_suspend(_core_if);
} else {
if (_core_if->op_state == A_PERIPHERAL) {
/**
* This function handles the OTG Interrupts. It reads the OTG
* Interrupt Register (GOTGINT) to determine what interrupt has
* occurred.
*
* @param _core_if Programming view of DWC_otg controller.
*/
int32_t dwc_otg_handle_otg_intr(dwc_otg_core_if_t * _core_if)
{
dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs;
gotgint_data_t gotgint;
gotgctl_data_t gotgctl;
gintmsk_data_t gintmsk;
gotgint.d32 = dwc_read_reg32(&global_regs->gotgint);
gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl);
DWC_DEBUGPL(DBG_CIL, "++OTG Interrupt gotgint=%0x [%s]\n", gotgint.d32,
op_state_str(_core_if));
//DWC_DEBUGPL(DBG_CIL, "gotgctl=%08x\n", gotgctl.d32 );
if (gotgint.b.sesenddet) {
DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
"Session End Detected++ (%s)\n",
op_state_str(_core_if));
gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl);
if (_core_if->op_state == B_HOST) {
pcd_start(_core_if);
_core_if->op_state = B_PERIPHERAL;
} else {
/* If not B_HOST and Device HNP still set. HNP
* Did not succeed!*/
if (gotgctl.b.devhnpen) {
DWC_DEBUGPL(DBG_ANY, "Session End Detected\n");
DWC_ERROR("Device Not Connected/Responding!\n");
}
/* If Session End Detected the B-Cable has
* been disconnected. */
/* Reset PCD and Gadget driver to a
* clean state. */
pcd_stop(_core_if);
}
gotgctl.d32 = 0;
gotgctl.b.devhnpen = 1;
dwc_modify_reg32(&global_regs->gotgctl, gotgctl.d32, 0);
}
if (gotgint.b.sesreqsucstschng) {
DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
"Session Reqeust Success Status Change++\n");
gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl);
if (gotgctl.b.sesreqscs) {
if ((_core_if->core_params->phy_type ==
DWC_PHY_TYPE_PARAM_FS)
&& (_core_if->core_params->i2c_enable)) {
_core_if->srp_success = 1;
} else {
pcd_resume(_core_if);
/* Clear Session Request */
gotgctl.d32 = 0;
gotgctl.b.sesreq = 1;
dwc_modify_reg32(&global_regs->gotgctl,
gotgctl.d32, 0);
}
}
}
if (gotgint.b.hstnegsucstschng) {
/* Print statements during the HNP interrupt handling
* can cause it to fail.*/
gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl);
if (gotgctl.b.hstnegscs) {
if (dwc_otg_is_host_mode(_core_if)) {
_core_if->op_state = B_HOST;
/*
* Need to disable SOF interrupt immediately.
* When switching from device to host, the PCD
* interrupt handler won't handle the
* interrupt if host mode is already set. The
* HCD interrupt handler won't get called if
* the HCD state is HALT. This means that the
* interrupt does not get handled and Linux
* complains loudly.
*/
gintmsk.d32 = 0;
gintmsk.b.sofintr = 1;
dwc_modify_reg32(&global_regs->gintmsk, gintmsk.d32, 0);
pcd_stop(_core_if);
/*
* Initialize the Core for Host mode.
*/
hcd_start(_core_if);
_core_if->op_state = B_HOST;
}
} else {
gotgctl.d32 = 0;
gotgctl.b.hnpreq = 1;
gotgctl.b.devhnpen = 1;
dwc_modify_reg32(&global_regs->gotgctl, gotgctl.d32, 0);
DWC_DEBUGPL(DBG_ANY, "HNP Failed\n");
DWC_ERROR("Device Not Connected/Responding\n");
}
}
if (gotgint.b.hstnegdet) {
/* The disconnect interrupt is set at the same time as
* Host Negotiation Detected. During the mode
* switch all interrupts are cleared so the disconnect
* interrupt handler will not get executed.
*/
DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
"Host Negotiation Detected++ (%s)\n",
(dwc_otg_is_host_mode(_core_if) ? "Host" :
"Device"));
if (dwc_otg_is_device_mode(_core_if)) {
DWC_DEBUGPL(DBG_ANY, "a_suspend->a_peripheral (%d)\n",
_core_if->op_state);
hcd_disconnect(_core_if);
pcd_start(_core_if);
_core_if->op_state = A_PERIPHERAL;
} else {
/*
* Need to disable SOF interrupt immediately. When
* switching from device to host, the PCD interrupt
* handler won't handle the interrupt if host mode is
* already set. The HCD interrupt handler won't get
* called if the HCD state is HALT. This means that
* the interrupt does not get handled and Linux
* complains loudly.
*/
gintmsk.d32 = 0;
gintmsk.b.sofintr = 1;
dwc_modify_reg32(&global_regs->gintmsk, gintmsk.d32,
0);
pcd_stop(_core_if);
hcd_start(_core_if);
_core_if->op_state = A_HOST;
}
}
if (gotgint.b.adevtoutchng) {
DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
"A-Device Timeout Change++\n");
}
if (gotgint.b.debdone) {
DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
"Debounce Done++\n");
}
/* Clear GOTGINT */
dwc_write_reg32(&_core_if->core_global_regs->gotgint, gotgint.d32);
return 1;
}