static int ohci_hcd_au1xxx_drv_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
unsigned long flags;
int rc;
rc = 0;
/* Root hub was already suspended. Disable irq emission and
* mark HW unaccessible, bail out if RH has been resumed. Use
* the spinlock to properly synchronize with possible pending
* RH suspend or resume activity.
*/
spin_lock_irqsave(&ohci->lock, flags);
if (ohci->rh_state != OHCI_RH_SUSPENDED) {
rc = -EINVAL;
goto bail;
}
ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
(void)ohci_readl(ohci, &ohci->regs->intrdisable);
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
alchemy_usb_control(ALCHEMY_USB_OHCI0, 0);
bail:
spin_unlock_irqrestore(&ohci->lock, flags);
return rc;
}
static int ohci_brcm_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
unsigned long flags;
int rc = 0;
/* Root hub was already suspended. Disable irq emission and
* mark HW unaccessible, bail out if RH has been resumed. Use
* the spinlock to properly synchronize with possible pending
* RH suspend or resume activity.
*/
spin_lock_irqsave(&ohci->lock, flags);
if (hcd->state != HC_STATE_SUSPENDED) {
rc = -EINVAL;
goto bail;
}
ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
(void)ohci_readl(ohci, &ohci->regs->intrdisable);
brcm_usb_suspend(hcd);
bail:
spin_unlock_irqrestore(&ohci->lock, flags);
return rc;
}
static int ohci_da8xx_init(struct usb_hcd *hcd)
{
struct device *dev = hcd->self.controller;
struct da8xx_ohci_root_hub *hub = dev->platform_data;
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int result;
u32 rh_a;
dev_dbg(dev, "starting USB controller\n");
ohci_da8xx_clock(1);
ohci->num_ports = 1;
result = ohci_init(ohci);
if (result < 0)
return result;
rh_a = ohci_readl(ohci, &ohci->regs->roothub.a);
if (hub->set_power) {
rh_a &= ~RH_A_NPS;
rh_a |= RH_A_PSM;
}
if (hub->get_oci) {
rh_a &= ~RH_A_NOCP;
rh_a |= RH_A_OCPM;
}
rh_a &= ~RH_A_POTPGT;
rh_a |= hub->potpgt << 24;
ohci_writel(ohci, rh_a, &ohci->regs->roothub.a);
return result;
}
static int exynos_ohci_runtime_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data;
struct exynos_ohci_hcd *exynos_ohci = platform_get_drvdata(pdev);
struct usb_hcd *hcd = exynos_ohci->hcd;
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
unsigned long flags;
/* Root hub was already suspended. Disable irq emission and
* mark HW unaccessible, bail out if RH has been resumed. Use
* the spinlock to properly synchronize with possible pending
* RH suspend or resume activity.
*
* This is still racy as hcd->state is manipulated outside of
* any locks =P But that will be a different fix.
*/
spin_lock_irqsave(&ohci->lock, flags);
if (ohci->rh_state != OHCI_RH_SUSPENDED && ohci->rh_state != OHCI_RH_HALTED) {
spin_unlock_irqrestore(&ohci->lock, flags);
err("Not ready %s", hcd->self.bus_name);
return 0;
}
ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
(void)ohci_readl(ohci, &ohci->regs->intrdisable);
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
spin_unlock_irqrestore(&ohci->lock, flags);
if (pdata->phy_suspend)
pdata->phy_suspend(pdev, S5P_USB_PHY_HOST);
return 0;
}
static int ohci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
unsigned long flags;
int rc = 0;
/* Root hub was already suspended. Disable irq emission and
* mark HW unaccessible, bail out if RH has been resumed. Use
* the spinlock to properly synchronize with possible pending
* RH suspend or resume activity.
*
* This is still racy as hcd->state is manipulated outside of
* any locks =P But that will be a different fix.
*/
spin_lock_irqsave (&ohci->lock, flags);
if (hcd->state != HC_STATE_SUSPENDED) {
rc = -EINVAL;
goto bail;
}
ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
(void)ohci_readl(ohci, &ohci->regs->intrdisable);
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
bail:
spin_unlock_irqrestore (&ohci->lock, flags);
return rc;
}
static int
ohci_hcd_at91_drv_suspend(struct platform_device *pdev, pm_message_t mesg)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
if (device_may_wakeup(&pdev->dev))
enable_irq_wake(hcd->irq);
/*
* The integrated transceivers seem unable to notice disconnect,
* reconnect, or wakeup without the 48 MHz clock active. so for
* correctness, always discard connection state (using reset).
*
* REVISIT: some boards will be able to turn VBUS off...
*/
if (at91_suspend_entering_slow_clock()) {
ohci_usb_reset (ohci);
/* flush the writes */
(void) ohci_readl (ohci, &ohci->regs->control);
at91_stop_clock();
}
return 0;
}
static int ohci_da8xx_init(struct usb_hcd *hcd)
{
struct device *dev = hcd->self.controller;
struct da8xx_ohci_root_hub *hub = dev->platform_data;
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int result;
u32 rh_a;
dev_dbg(dev, "starting USB controller\n");
ohci_da8xx_clock(1);
/*
* DA830 only has 1 port connected to the pins but its HC root hub
* register A reports 2 ports, thus we'll have to override it...
*/
ohci->num_ports = 1;
result = ohci_init(ohci);
if (result < 0)
return result;
/*
* Since we're providing a board-specific root hub port power control
* and over-current reporting, we have to override the HC root hub A
* register's default value, so that ohci_hub_control() could return
* the correct hub descriptor...
*/
rh_a = ohci_readl(ohci, &ohci->regs->roothub.a);
rh_a &= ~(RH_A_POTPGT | RH_A_NPS | RH_A_NOCP);
rh_a |= (hub->potpgt << 24) | RH_A_PSM | RH_A_OCPM;
ohci_writel(ohci, rh_a, &ohci->regs->roothub.a);
return result;
}
/*
*******************************************************************************
* sw_ohci_hcd_suspend
*
* Description:
* void
*
* Parameters:
* void
*
* Return value:
* void
*
* note:
* void
*
*******************************************************************************
*/
static int sw_ohci_hcd_suspend(struct device *dev)
{
struct sw_hci_hcd *sw_ohci = NULL;
struct usb_hcd *hcd = NULL;
struct ohci_hcd *ohci = NULL;
unsigned long flags = 0;
int rc = 0;
if(dev == NULL){
DMSG_PANIC("ERR: Argment is invalid\n");
return 0;
}
hcd = dev_get_drvdata(dev);
if(hcd == NULL){
DMSG_PANIC("ERR: hcd is null\n");
return 0;
}
sw_ohci = dev->platform_data;
if(sw_ohci == NULL){
DMSG_PANIC("ERR: sw_ohci is null\n");
return 0;
}
if(sw_ohci->probe == 0){
DMSG_PANIC("ERR: sw_ohci is disable, can not suspend\n");
return 0;
}
ohci = hcd_to_ohci(hcd);
if(ohci == NULL){
DMSG_PANIC("ERR: ohci is null\n");
return 0;
}
DMSG_INFO("[%s]: sw_ohci_hcd_suspend\n", sw_ohci->hci_name);
/* Root hub was already suspended. Disable irq emission and
* mark HW unaccessible, bail out if RH has been resumed. Use
* the spinlock to properly synchronize with possible pending
* RH suspend or resume activity.
*
* This is still racy as hcd->state is manipulated outside of
* any locks =P But that will be a different fix.
*/
spin_lock_irqsave(&ohci->lock, flags);
ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
(void)ohci_readl(ohci, &ohci->regs->intrdisable);
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
spin_unlock_irqrestore(&ohci->lock, flags);
sw_stop_ohc(sw_ohci);
return rc;
}
int s5p_ohci_port_power_off(struct platform_device *pdev)
{
struct s5p_ohci_hcd *s5p_ohci = platform_get_drvdata(pdev);
struct usb_hcd *hcd = s5p_ohci->hcd;
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
(void)ohci_readl(ohci, &ohci->regs->intrdisable);
ohci_writel (ohci, RH_HS_LPS, &ohci->regs->roothub.status);
return 0;
}
static int ohci_da8xx_reset(struct usb_hcd *hcd)
{
struct device *dev = hcd->self.controller;
struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int result;
u32 rh_a;
dev_dbg(dev, "starting USB controller\n");
result = ohci_da8xx_enable(hcd);
if (result < 0)
return result;
/*
* DA8xx only have 1 port connected to the pins but the HC root hub
* register A reports 2 ports, thus we'll have to override it...
*/
ohci->num_ports = 1;
result = ohci_setup(hcd);
if (result < 0) {
ohci_da8xx_disable(hcd);
return result;
}
/*
* Since we're providing a board-specific root hub port power control
* and over-current reporting, we have to override the HC root hub A
* register's default value, so that ohci_hub_control() could return
* the correct hub descriptor...
*/
rh_a = ohci_readl(ohci, &ohci->regs->roothub.a);
if (ohci_da8xx_has_set_power(hcd)) {
rh_a &= ~RH_A_NPS;
rh_a |= RH_A_PSM;
}
if (ohci_da8xx_has_oci(hcd)) {
rh_a &= ~RH_A_NOCP;
rh_a |= RH_A_OCPM;
}
if (ohci_da8xx_has_potpgt(hcd)) {
rh_a &= ~RH_A_POTPGT;
rh_a |= hub->potpgt << 24;
}
ohci_writel(ohci, rh_a, &ohci->regs->roothub.a);
return result;
}
/* Following a power loss, we must prepare to regain control of the ports
* we used to own. This means turning on the port power before ehci-hcd
* tries to switch ownership.
*
* This isn't a 100% perfect solution. On most systems the OHCI controllers
* lie at lower PCI addresses than the EHCI controller, so they will be
* discovered (and hence resumed) first. But there is no guarantee things
* will always work this way. If the EHCI controller is resumed first and
* the OHCI ports are unpowered, then the handover will fail.
*/
static void prepare_for_handover(struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int port;
/* Here we "know" root ports should always stay powered */
ohci_dbg(ohci, "powerup ports\n");
for (port = 0; port < ohci->num_ports; port++)
ohci_writel(ohci, RH_PS_PPS,
&ohci->regs->roothub.portstatus[port]);
/* Flush those writes */
ohci_readl(ohci, &ohci->regs->control);
msleep(20);
}
static int ohci_brcm_start(struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
struct ohci_regs __iomem *regs;
regs = hcd->regs;
ohci_writel(ohci, 1, ®s->cmdstatus);
ohci_readl(ohci, ®s->cmdstatus);
mdelay(10);
ohci_hcd_init(ohci);
ohci_init(ohci);
ohci_run(ohci);
hcd->state = HC_STATE_RUNNING;
return 0;
}
static int ohci_hcd_s5p_drv_runtime_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct s5p_ohci_platdata *pdata = pdev->dev.platform_data;
struct s5p_ohci_hcd *s5p_ohci = platform_get_drvdata(pdev);
struct usb_hcd *hcd = s5p_ohci->hcd;
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
unsigned long flags;
int rc = 0;
/* Root hub was already suspended. Disable irq emission and
* mark HW unaccessible, bail out if RH has been resumed. Use
* the spinlock to properly synchronize with possible pending
* RH suspend or resume activity.
*
* This is still racy as hcd->state is manipulated outside of
* any locks =P But that will be a different fix.
*/
spin_lock_irqsave(&ohci->lock, flags);
if (hcd->state != HC_STATE_SUSPENDED && hcd->state != HC_STATE_HALT) {
spin_unlock_irqrestore(&ohci->lock, flags);
err("Not ready %s", hcd->self.bus_name);
return rc;
}
ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
(void)ohci_readl(ohci, &ohci->regs->intrdisable);
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
spin_unlock_irqrestore(&ohci->lock, flags);
#ifdef CONFIG_USB_EXYNOS_SWITCH
if (samsung_board_rev_is_0_0())
ohci_writel (ohci, RH_HS_LPS, &ohci->regs->roothub.status);
#endif
if (pdata->phy_suspend)
pdata->phy_suspend(pdev, S5P_USB_PHY_HOST);
return rc;
}
static int ohci_hcd_spmp_drv_suspend(struct platform_device *pdev,
pm_message_t message)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
struct spmp_ohci *spmpohci = (struct spmp_ohci *)hcd_to_ohci(hcd);
unsigned long flags;
int rc;
rc = 0;
/* Root hub was already suspended. Disable irq emission and
* mark HW unaccessible, bail out if RH has been resumed. Use
* the spinlock to properly synchronize with possible pending
* RH suspend or resume activity.
*
* This is still racy as hcd->state is manipulated outside of
* any locks =P But that will be a different fix.
*/
spin_lock_irqsave(&ohci->lock, flags);
if (hcd->state != HC_STATE_SUSPENDED) {
rc = -EINVAL;
goto bail;
}
ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
(void)ohci_readl(ohci, &ohci->regs->intrdisable);
/* make sure snapshot being resumed re-enumerates everything */
if (message.event == PM_EVENT_PRETHAW)
ohci_usb_reset(ohci);
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
spmp_stop_ohc(spmpohci, &pdev->dev);
bail:
spin_unlock_irqrestore(&ohci->lock, flags);
return rc;
}
static int ohci_hcd_s5pv210_runtime_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
unsigned long flags;
int rc = 0;
/* Root hub was already suspended. Disable irq emission and
* mark HW unaccessible, bail out if RH has been resumed. Use
* the spinlock to properly synchronize with possible pending
* RH suspend or resume activity.
*
* This is still racy as hcd->state is manipulated outside of
* any locks =P But that will be a different fix.
*/
spin_lock_irqsave(&ohci->lock, flags);
if (hcd->state != HC_STATE_SUSPENDED) {
rc = -EINVAL;
goto bail;
}
ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
(void)ohci_readl(ohci, &ohci->regs->intrdisable);
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
#if defined(CONFIG_SAMSUNG_PHONE_SVNET) || defined(CONFIG_SAMSUNG_LTE) || defined(CONFIG_UMTS_LINK_HSIC)
#else
printk(KERN_DEBUG "USB_PM ohci rt susp\n");
usb_host_phy_off();
#endif
bail:
spin_unlock_irqrestore(&ohci->lock, flags);
return rc;
}
static int __devinit ohci_spmp_start(struct usb_hcd *hcd)
{
// #define FSMP_NEW(fi) (0x7fff & ((6 * ((fi) - 210)) / 7))
// modify by eddie 20110217 FSMP shoule have 15 valid bit, but hardware only support 13 bit.
// #define FSMP_NEW(fi) (0x7fff & (((6 * ((fi) - 210)) / 7))>>2)
#define FSMP_NEW(fi) 2441
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int ret;
u32 temp;
ohci_dbg(ohci, "ohci_spmp_start, ohci:%p", ohci);
/* The value of NDP in roothub_a is incorrect on this hardware */
ohci->num_ports = 2;
if ((ret = ohci_init(ohci)) < 0)
return ret;
temp = ohci_readl (ohci, &ohci->regs->fminterval);
ohci->fminterval = temp & 0x7fff;
if (ohci->fminterval != FI)
{
ohci_dbg(ohci, "fminterval delta %d\n", ohci->fminterval - FI);
}
ohci->fminterval |= FSMP_NEW (ohci->fminterval) << 16;
/* also: power/overcurrent flags in roothub.a */
if ((ret = ohci_run(ohci)) < 0) {
err ("can't start %s", hcd->self.bus_name);
ohci_stop(hcd);
return ret;
}
return 0;
}
#define OHCI_SCHED_ENABLES \
(OHCI_CTRL_CLE|OHCI_CTRL_BLE|OHCI_CTRL_PLE|OHCI_CTRL_IE)
static void dl_done_list (struct ohci_hcd *);
static void finish_unlinks (struct ohci_hcd *, u16);
#ifdef CONFIG_PM
static int ohci_restart(struct ohci_hcd *ohci);
static int ohci_rh_suspend (struct ohci_hcd *ohci, int autostop)
__releases(ohci->lock)
__acquires(ohci->lock)
{
int status = 0;
ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
switch (ohci->hc_control & OHCI_CTRL_HCFS) {
case OHCI_USB_RESUME:
ohci_dbg (ohci, "resume/suspend?\n");
ohci->hc_control &= ~OHCI_CTRL_HCFS;
ohci->hc_control |= OHCI_USB_RESET;
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
(void) ohci_readl (ohci, &ohci->regs->control);
/* FALL THROUGH */
case OHCI_USB_RESET:
status = -EBUSY;
ohci_dbg (ohci, "needs reinit!\n");
goto done;
case OHCI_USB_SUSPEND:
if (!ohci->autostop) {
ohci_dbg (ohci, "already suspended\n");
/* caller owns root->serialize */
static int ohci_hub_resume (struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
struct usb_device *root = hcd_to_bus (&ohci->hcd)->root_hub;
u32 temp, enables;
int status = -EINPROGRESS;
if (!root->dev.power.power_state)
return 0;
if (time_before (jiffies, ohci->next_statechange))
msleep(5);
spin_lock_irq (&ohci->lock);
ohci->hc_control = ohci_readl (&ohci->regs->control);
switch (ohci->hc_control & OHCI_CTRL_HCFS) {
case OHCI_USB_SUSPEND:
ohci->hc_control &= ~(OHCI_CTRL_HCFS|OHCI_SCHED_ENABLES);
ohci->hc_control |= OHCI_USB_RESUME;
writel (ohci->hc_control, &ohci->regs->control);
(void) ohci_readl (&ohci->regs->control);
ohci_dbg (ohci, "resume root hub\n");
break;
case OHCI_USB_RESUME:
/* HCFS changes sometime after INTR_RD */
ohci_info (ohci, "wakeup\n");
break;
case OHCI_USB_OPER:
ohci_dbg (ohci, "odd resume\n");
root->dev.power.power_state = 0;
status = 0;
break;
default: /* RESET, we lost power */
ohci_dbg (ohci, "root hub hardware reset\n");
status = -EBUSY;
}
spin_unlock_irq (&ohci->lock);
if (status == -EBUSY)
return hc_restart (ohci);
if (status != -EINPROGRESS)
return status;
temp = roothub_a (ohci) & RH_A_NDP;
enables = 0;
while (temp--) {
u32 stat = ohci_readl (&ohci->regs->roothub.portstatus [temp]);
/* force global, not selective, resume */
if (!(stat & RH_PS_PSS))
continue;
writel (RH_PS_POCI, &ohci->regs->roothub.portstatus [temp]);
}
/* Some controllers (lucent) need extra-long delays */
ohci->hcd.state = USB_STATE_RESUMING;
mdelay (20 /* usb 11.5.1.10 */ + 15);
temp = ohci_readl (&ohci->regs->control);
temp &= OHCI_CTRL_HCFS;
if (temp != OHCI_USB_RESUME) {
ohci_err (ohci, "controller won't resume\n");
return -EBUSY;
}
/* disable old schedule state, reinit from scratch */
writel (0, &ohci->regs->ed_controlhead);
writel (0, &ohci->regs->ed_controlcurrent);
writel (0, &ohci->regs->ed_bulkhead);
writel (0, &ohci->regs->ed_bulkcurrent);
writel (0, &ohci->regs->ed_periodcurrent);
writel ((u32) ohci->hcca_dma, &ohci->regs->hcca);
periodic_reinit (ohci);
/* interrupts might have been disabled */
writel (OHCI_INTR_INIT, &ohci->regs->intrenable);
if (ohci->ed_rm_list)
writel (OHCI_INTR_SF, &ohci->regs->intrenable);
writel (ohci_readl (&ohci->regs->intrstatus), &ohci->regs->intrstatus);
/* Then re-enable operations */
writel (OHCI_USB_OPER, &ohci->regs->control);
(void) ohci_readl (&ohci->regs->control);
msleep (3);
temp = OHCI_CONTROL_INIT | OHCI_USB_OPER;
if (ohci->hcd.can_wakeup)
temp |= OHCI_CTRL_RWC;
ohci->hc_control = temp;
writel (temp, &ohci->regs->control);
(void) ohci_readl (&ohci->regs->control);
/* TRSMRCY */
msleep (10);
root->dev.power.power_state = 0;
/* keep it alive for ~5x suspend + resume costs */
ohci->next_statechange = jiffies + msecs_to_jiffies (250);
/* maybe turn schedules back on */
enables = 0;
temp = 0;
if (!ohci->ed_rm_list) {
if (ohci->ed_controltail) {
writel (find_head (ohci->ed_controltail)->dma,
&ohci->regs->ed_controlhead);
enables |= OHCI_CTRL_CLE;
temp |= OHCI_CLF;
}
if (ohci->ed_bulktail) {
writel (find_head (ohci->ed_bulktail)->dma,
&ohci->regs->ed_bulkhead);
enables |= OHCI_CTRL_BLE;
temp |= OHCI_BLF;
}
}
if (hcd_to_bus (&ohci->hcd)->bandwidth_isoc_reqs
|| hcd_to_bus (&ohci->hcd)->bandwidth_int_reqs)
enables |= OHCI_CTRL_PLE|OHCI_CTRL_IE;
if (enables) {
ohci_dbg (ohci, "restarting schedules ... %08x\n", enables);
ohci->hc_control |= enables;
writel (ohci->hc_control, &ohci->regs->control);
if (temp)
writel (status, &ohci->regs->cmdstatus);
(void) ohci_readl (&ohci->regs->control);
}
ohci->hcd.state = USB_STATE_RUNNING;
return 0;
}
static int
ohci_hub_status_data (struct usb_hcd *hcd, char *buf)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
int ports, i, changed = 0, length = 1;
int can_suspend = 1;
ports = roothub_a (ohci) & RH_A_NDP;
if (ports > MAX_ROOT_PORTS) {
if (!HCD_IS_RUNNING(ohci->hcd.state))
return -ESHUTDOWN;
ohci_err (ohci, "bogus NDP=%d, rereads as NDP=%d\n",
ports, ohci_readl (&ohci->regs->roothub.a) & RH_A_NDP);
/* retry later; "should not happen" */
return 0;
}
/* init status */
if (roothub_status (ohci) & (RH_HS_LPSC | RH_HS_OCIC))
buf [0] = changed = 1;
else
buf [0] = 0;
if (ports > 7) {
buf [1] = 0;
length++;
}
/* look at each port */
for (i = 0; i < ports; i++) {
u32 status = roothub_portstatus (ohci, i);
if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC
| RH_PS_OCIC | RH_PS_PRSC)) {
changed = 1;
if (i < 7)
buf [0] |= 1 << (i + 1);
else
buf [1] |= 1 << (i - 7);
continue;
}
/* can suspend if no ports are enabled; or if all all
* enabled ports are suspended AND remote wakeup is on.
*/
if (!(status & RH_PS_CCS))
continue;
if ((status & RH_PS_PSS) && ohci->hcd.remote_wakeup)
continue;
can_suspend = 0;
}
#ifdef CONFIG_PM
/* save power by suspending idle root hubs;
* INTR_RD wakes us when there's work
*/
if (can_suspend
&& !changed
&& !ohci->ed_rm_list
&& ((OHCI_CTRL_HCFS | OHCI_SCHED_ENABLES)
& ohci->hc_control)
== OHCI_USB_OPER
&& down_trylock (&hcd->self.root_hub->serialize) == 0
) {
ohci_vdbg (ohci, "autosuspend\n");
(void) ohci_hub_suspend (&ohci->hcd);
ohci->hcd.state = USB_STATE_RUNNING;
up (&hcd->self.root_hub->serialize);
}
#endif
return changed ? length : 0;
}
static inline u32 roothub_status (struct ohci_hcd *hc)
{ return ohci_readl (&hc->regs->roothub.status); }
static int ohci_hub_suspend (struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
struct usb_device *root = hcd_to_bus (&ohci->hcd)->root_hub;
int status = 0;
if (root->dev.power.power_state != 0)
return 0;
if (time_before (jiffies, ohci->next_statechange))
return -EAGAIN;
spin_lock_irq (&ohci->lock);
ohci->hc_control = ohci_readl (&ohci->regs->control);
switch (ohci->hc_control & OHCI_CTRL_HCFS) {
case OHCI_USB_RESUME:
ohci_dbg (ohci, "resume/suspend?\n");
ohci->hc_control &= ~OHCI_CTRL_HCFS;
ohci->hc_control |= OHCI_USB_RESET;
writel (ohci->hc_control, &ohci->regs->control);
(void) ohci_readl (&ohci->regs->control);
/* FALL THROUGH */
case OHCI_USB_RESET:
status = -EBUSY;
ohci_dbg (ohci, "needs reinit!\n");
goto done;
case OHCI_USB_SUSPEND:
ohci_dbg (ohci, "already suspended?\n");
goto succeed;
}
ohci_dbg (ohci, "suspend root hub\n");
/* First stop any processing */
ohci->hcd.state = USB_STATE_QUIESCING;
if (ohci->hc_control & OHCI_SCHED_ENABLES) {
int limit;
ohci->hc_control &= ~OHCI_SCHED_ENABLES;
writel (ohci->hc_control, &ohci->regs->control);
ohci->hc_control = ohci_readl (&ohci->regs->control);
writel (OHCI_INTR_SF, &ohci->regs->intrstatus);
/* sched disables take effect on the next frame,
* then the last WDH could take 6+ msec
*/
ohci_dbg (ohci, "stopping schedules ...\n");
limit = 2000;
while (limit > 0) {
udelay (250);
limit =- 250;
if (ohci_readl (&ohci->regs->intrstatus) & OHCI_INTR_SF)
break;
}
dl_done_list (ohci, NULL);
mdelay (7);
}
dl_done_list (ohci, NULL);
finish_unlinks (ohci, OHCI_FRAME_NO(ohci->hcca), NULL);
writel (ohci_readl (&ohci->regs->intrstatus), &ohci->regs->intrstatus);
/* maybe resume can wake root hub */
if (ohci->hcd.remote_wakeup)
ohci->hc_control |= OHCI_CTRL_RWE;
else
ohci->hc_control &= ~OHCI_CTRL_RWE;
/* Suspend hub */
ohci->hc_control &= ~OHCI_CTRL_HCFS;
ohci->hc_control |= OHCI_USB_SUSPEND;
writel (ohci->hc_control, &ohci->regs->control);
(void) ohci_readl (&ohci->regs->control);
/* no resumes until devices finish suspending */
ohci->next_statechange = jiffies + msecs_to_jiffies (5);
succeed:
/* it's not USB_STATE_SUSPENDED unless access to this
* hub from the non-usb side (PCI, SOC, etc) stopped
*/
root->dev.power.power_state = 3;
done:
spin_unlock_irq (&ohci->lock);
return status;
}
static int sunxi_ohci_hcd_suspend(struct device *dev)
{
struct sunxi_hci_hcd *sunxi_ohci = NULL;
struct usb_hcd *hcd = NULL;
struct ohci_hcd *ohci = NULL;
unsigned long flags = 0;
int val = 0;
if(dev == NULL){
DMSG_PANIC("ERR: Argment is invalid\n");
return 0;
}
hcd = dev_get_drvdata(dev);
if(hcd == NULL){
DMSG_PANIC("ERR: hcd is null\n");
return 0;
}
sunxi_ohci = dev->platform_data;
if(sunxi_ohci == NULL){
DMSG_PANIC("ERR: sunxi_ohci is null\n");
return 0;
}
if(sunxi_ohci->probe == 0){
DMSG_PANIC("ERR: sunxi_ohci is disable, can not suspend\n");
return 0;
}
ohci = hcd_to_ohci(hcd);
if(ohci == NULL){
DMSG_PANIC("ERR: ohci is null\n");
return 0;
}
#ifdef CONFIG_USB_HCD_ENHANCE
atomic_set(&hci1_thread_scan_flag, 0);
atomic_set(&hci3_thread_scan_flag, 0);
#endif
if(sunxi_ohci->not_suspend){
DMSG_INFO("[%s]: not suspend\n", sunxi_ohci->hci_name);
scene_lock(&ohci_standby_lock[sunxi_ohci->usbc_no]);
enable_wakeup_src(CPUS_USBMOUSE_SRC, 0);
val = ohci_readl(ohci, &ohci->regs->control);
val |= OHCI_CTRL_RWE;
ohci_writel(ohci, val, &ohci->regs->control);
val = ohci_readl(ohci, &ohci->regs->intrenable);
val |= OHCI_INTR_RD;
val |= OHCI_INTR_MIE;
ohci_writel(ohci, val, &ohci->regs->intrenable);
#if defined (CONFIG_ARCH_SUN8IW6) || defined (CONFIG_ARCH_SUN9IW1)
sunxi_ohci->hci_phy_ctrl(sunxi_ohci, 0);
#endif
}else{
DMSG_INFO("[%s]: sunxi_ohci_hcd_suspend\n", sunxi_ohci->hci_name);
/* Root hub was already suspended. Disable irq emission and
* mark HW unaccessible, bail out if RH has been resumed. Use
* the spinlock to properly synchronize with possible pending
* RH suspend or resume activity.
*
* This is still racy as hcd->state is manipulated outside of
* any locks =P But that will be a different fix.
*/
spin_lock_irqsave(&ohci->lock, flags);
ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
(void)ohci_readl(ohci, &ohci->regs->intrdisable);
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
spin_unlock_irqrestore(&ohci->lock, flags);
sunxi_stop_ohci(sunxi_ohci);
}
return 0;
}
static int
ohci_hub_status_data (struct usb_hcd *hcd, char *buf)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
int i, changed = 0, length = 1;
int can_suspend = hcd->can_wakeup;
unsigned long flags;
spin_lock_irqsave (&ohci->lock, flags);
/* handle autosuspended root: finish resuming before
* letting khubd or root hub timer see state changes.
*/
if (unlikely((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER
|| !HC_IS_RUNNING(hcd->state))) {
can_suspend = 0;
goto done;
}
/* undocumented erratum seen on at least rev D */
if ((ohci->flags & OHCI_QUIRK_AMD756)
&& (roothub_a (ohci) & RH_A_NDP) > MAX_ROOT_PORTS) {
ohci_warn (ohci, "bogus NDP, rereads as NDP=%d\n",
ohci_readl (ohci, &ohci->regs->roothub.a) & RH_A_NDP);
/* retry later; "should not happen" */
goto done;
}
/* init status */
if (roothub_status (ohci) & (RH_HS_LPSC | RH_HS_OCIC))
buf [0] = changed = 1;
else
buf [0] = 0;
if (ohci->num_ports > 7) {
buf [1] = 0;
length++;
}
/* look at each port */
for (i = 0; i < ohci->num_ports; i++) {
u32 status = roothub_portstatus (ohci, i);
if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC
| RH_PS_OCIC | RH_PS_PRSC)) {
changed = 1;
if (i < 7)
buf [0] |= 1 << (i + 1);
else
buf [1] |= 1 << (i - 7);
continue;
}
/* can suspend if no ports are enabled; or if all all
* enabled ports are suspended AND remote wakeup is on.
*/
if (!(status & RH_PS_CCS))
continue;
if ((status & RH_PS_PSS) && hcd->remote_wakeup)
continue;
can_suspend = 0;
}
done:
spin_unlock_irqrestore (&ohci->lock, flags);
#ifdef CONFIG_PM
/* save power by suspending idle root hubs;
* INTR_RD wakes us when there's work
*/
if (can_suspend
&& !changed
&& !ohci->ed_rm_list
&& ((OHCI_CTRL_HCFS | OHCI_SCHED_ENABLES)
& ohci->hc_control)
== OHCI_USB_OPER
&& time_after (jiffies, ohci->next_statechange)
&& usb_trylock_device (hcd->self.root_hub) == 0
) {
ohci_vdbg (ohci, "autosuspend\n");
(void) ohci_bus_suspend (hcd);
usb_unlock_device (hcd->self.root_hub);
}
#endif
return changed ? length : 0;
}
static int ohci_bus_suspend (struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
int status = 0;
unsigned long flags;
spin_lock_irqsave (&ohci->lock, flags);
if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))) {
spin_unlock_irqrestore (&ohci->lock, flags);
return -ESHUTDOWN;
}
ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
switch (ohci->hc_control & OHCI_CTRL_HCFS) {
case OHCI_USB_RESUME:
ohci_dbg (ohci, "resume/suspend?\n");
ohci->hc_control &= ~OHCI_CTRL_HCFS;
ohci->hc_control |= OHCI_USB_RESET;
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
(void) ohci_readl (ohci, &ohci->regs->control);
/* FALL THROUGH */
case OHCI_USB_RESET:
status = -EBUSY;
ohci_dbg (ohci, "needs reinit!\n");
goto done;
case OHCI_USB_SUSPEND:
ohci_dbg (ohci, "already suspended\n");
goto done;
}
ohci_dbg (ohci, "suspend root hub\n");
/* First stop any processing */
if (ohci->hc_control & OHCI_SCHED_ENABLES) {
int limit;
ohci->hc_control &= ~OHCI_SCHED_ENABLES;
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
ohci_writel (ohci, OHCI_INTR_SF, &ohci->regs->intrstatus);
/* sched disables take effect on the next frame,
* then the last WDH could take 6+ msec
*/
ohci_dbg (ohci, "stopping schedules ...\n");
limit = 2000;
while (limit > 0) {
udelay (250);
limit =- 250;
if (ohci_readl (ohci, &ohci->regs->intrstatus)
& OHCI_INTR_SF)
break;
}
dl_done_list (ohci, NULL);
mdelay (7);
}
dl_done_list (ohci, NULL);
finish_unlinks (ohci, ohci_frame_no(ohci), NULL);
ohci_writel (ohci, ohci_readl (ohci, &ohci->regs->intrstatus),
&ohci->regs->intrstatus);
/* maybe resume can wake root hub */
if (device_may_wakeup(&ohci_to_hcd(ohci)->self.root_hub->dev))
ohci->hc_control |= OHCI_CTRL_RWE;
else
ohci->hc_control &= ~OHCI_CTRL_RWE;
/* Suspend hub ... this is the "global (to this bus) suspend" mode,
* which doesn't imply ports will first be individually suspended.
*/
ohci->hc_control &= ~OHCI_CTRL_HCFS;
ohci->hc_control |= OHCI_USB_SUSPEND;
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
(void) ohci_readl (ohci, &ohci->regs->control);
/* no resumes until devices finish suspending */
ohci->next_statechange = jiffies + msecs_to_jiffies (5);
/* no timer polling */
hcd->poll_rh = 0;
done:
/* external suspend vs self autosuspend ... same effect */
if (status == 0)
usb_hcd_suspend_root_hub(hcd);
spin_unlock_irqrestore (&ohci->lock, flags);
return status;
}
static int
ohci_hub_status_data (struct usb_hcd *hcd, char *buf)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
int i, changed = 0, length = 1;
int can_suspend;
unsigned long flags;
can_suspend = device_may_wakeup(&hcd->self.root_hub->dev);
spin_lock_irqsave (&ohci->lock, flags);
/* handle autosuspended root: finish resuming before
* letting khubd or root hub timer see state changes.
*/
if (unlikely((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER
|| !HC_IS_RUNNING(hcd->state))) {
can_suspend = 0;
goto done;
}
/* undocumented erratum seen on at least rev D */
if ((ohci->flags & OHCI_QUIRK_AMD756)
&& (roothub_a (ohci) & RH_A_NDP) > MAX_ROOT_PORTS) {
ohci_warn (ohci, "bogus NDP, rereads as NDP=%d\n",
ohci_readl (ohci, &ohci->regs->roothub.a) & RH_A_NDP);
/* retry later; "should not happen" */
goto done;
}
/* init status */
if (roothub_status (ohci) & (RH_HS_LPSC | RH_HS_OCIC))
buf [0] = changed = 1;
else
buf [0] = 0;
if (ohci->num_ports > 7) {
buf [1] = 0;
length++;
}
/* look at each port */
for (i = 0; i < ohci->num_ports; i++) {
u32 status = roothub_portstatus (ohci, i);
/* can't autosuspend with active ports */
if ((status & RH_PS_PES) && !(status & RH_PS_PSS))
can_suspend = 0;
if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC
| RH_PS_OCIC | RH_PS_PRSC)) {
changed = 1;
if (i < 7)
buf [0] |= 1 << (i + 1);
else
buf [1] |= 1 << (i - 7);
continue;
}
}
/* after root hub changes, stop polling after debouncing
* for a while and maybe kicking in autosuspend
*/
if (changed) {
ohci->next_statechange = jiffies + STATECHANGE_DELAY;
can_suspend = 0;
} else if (time_before (jiffies, ohci->next_statechange)) {
can_suspend = 0;
} else {
#ifdef CONFIG_PM
can_suspend = can_suspend
&& !ohci->ed_rm_list
&& ((OHCI_CTRL_HCFS | OHCI_SCHED_ENABLES)
& ohci->hc_control)
== OHCI_USB_OPER;
#endif
if (hcd->uses_new_polling) {
hcd->poll_rh = 0;
/* use INTR_RHSC iff INTR_RD won't apply */
if (!can_suspend)
ohci_writel (ohci, OHCI_INTR_RHSC,
&ohci->regs->intrenable);
}
}
done:
spin_unlock_irqrestore (&ohci->lock, flags);
#ifdef CONFIG_PM
/* save power by autosuspending idle root hubs;
* INTR_RD wakes us when there's work
*/
if (can_suspend && usb_trylock_device (hcd->self.root_hub) == 0) {
ohci_vdbg (ohci, "autosuspend\n");
(void) ohci_bus_suspend (hcd);
usb_unlock_device (hcd->self.root_hub);
}
#endif
return changed ? length : 0;
}
/* caller has locked the root hub */
static int ohci_bus_resume (struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
u32 temp, enables;
int status = -EINPROGRESS;
unsigned long flags;
if (time_before (jiffies, ohci->next_statechange))
msleep(5);
spin_lock_irqsave (&ohci->lock, flags);
if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))) {
spin_unlock_irqrestore (&ohci->lock, flags);
return -ESHUTDOWN;
}
ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) {
/* this can happen after resuming a swsusp snapshot */
if (hcd->state == HC_STATE_RESUMING) {
ohci_dbg (ohci, "BIOS/SMM active, control %03x\n",
ohci->hc_control);
status = -EBUSY;
/* this happens when pmcore resumes HC then root */
} else {
ohci_dbg (ohci, "duplicate resume\n");
status = 0;
}
} else switch (ohci->hc_control & OHCI_CTRL_HCFS) {
case OHCI_USB_SUSPEND:
ohci->hc_control &= ~(OHCI_CTRL_HCFS|OHCI_SCHED_ENABLES);
ohci->hc_control |= OHCI_USB_RESUME;
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
(void) ohci_readl (ohci, &ohci->regs->control);
ohci_dbg (ohci, "resume root hub\n");
break;
case OHCI_USB_RESUME:
/* HCFS changes sometime after INTR_RD */
ohci_info (ohci, "wakeup\n");
break;
case OHCI_USB_OPER:
/* this can happen after resuming a swsusp snapshot */
ohci_dbg (ohci, "snapshot resume? reinit\n");
status = -EBUSY;
break;
default: /* RESET, we lost power */
ohci_dbg (ohci, "lost power\n");
status = -EBUSY;
}
spin_unlock_irqrestore (&ohci->lock, flags);
if (status == -EBUSY) {
(void) ohci_init (ohci);
return ohci_restart (ohci);
}
if (status != -EINPROGRESS)
return status;
temp = ohci->num_ports;
enables = 0;
while (temp--) {
u32 stat = ohci_readl (ohci,
&ohci->regs->roothub.portstatus [temp]);
/* force global, not selective, resume */
if (!(stat & RH_PS_PSS))
continue;
ohci_writel (ohci, RH_PS_POCI,
&ohci->regs->roothub.portstatus [temp]);
}
/* Some controllers (lucent erratum) need extra-long delays */
msleep (20 /* usb 11.5.1.10 */ + 12 /* 32 msec counter */ + 1);
temp = ohci_readl (ohci, &ohci->regs->control);
temp &= OHCI_CTRL_HCFS;
if (temp != OHCI_USB_RESUME) {
ohci_err (ohci, "controller won't resume\n");
return -EBUSY;
}
/* disable old schedule state, reinit from scratch */
ohci_writel (ohci, 0, &ohci->regs->ed_controlhead);
ohci_writel (ohci, 0, &ohci->regs->ed_controlcurrent);
ohci_writel (ohci, 0, &ohci->regs->ed_bulkhead);
ohci_writel (ohci, 0, &ohci->regs->ed_bulkcurrent);
ohci_writel (ohci, 0, &ohci->regs->ed_periodcurrent);
ohci_writel (ohci, (u32) ohci->hcca_dma, &ohci->regs->hcca);
/* Sometimes PCI D3 suspend trashes frame timings ... */
periodic_reinit (ohci);
/* interrupts might have been disabled */
ohci_writel (ohci, OHCI_INTR_INIT, &ohci->regs->intrenable);
if (ohci->ed_rm_list)
ohci_writel (ohci, OHCI_INTR_SF, &ohci->regs->intrenable);
ohci_writel (ohci, ohci_readl (ohci, &ohci->regs->intrstatus),
&ohci->regs->intrstatus);
/* Then re-enable operations */
ohci_writel (ohci, OHCI_USB_OPER, &ohci->regs->control);
(void) ohci_readl (ohci, &ohci->regs->control);
msleep (3);
temp = ohci->hc_control;
temp &= OHCI_CTRL_RWC;
temp |= OHCI_CONTROL_INIT | OHCI_USB_OPER;
ohci->hc_control = temp;
ohci_writel (ohci, temp, &ohci->regs->control);
(void) ohci_readl (ohci, &ohci->regs->control);
/* TRSMRCY */
msleep (10);
/* keep it alive for more than ~5x suspend + resume costs */
ohci->next_statechange = jiffies + STATECHANGE_DELAY;
/* maybe turn schedules back on */
enables = 0;
temp = 0;
if (!ohci->ed_rm_list) {
if (ohci->ed_controltail) {
ohci_writel (ohci,
find_head (ohci->ed_controltail)->dma,
&ohci->regs->ed_controlhead);
enables |= OHCI_CTRL_CLE;
temp |= OHCI_CLF;
}
if (ohci->ed_bulktail) {
ohci_writel (ohci, find_head (ohci->ed_bulktail)->dma,
&ohci->regs->ed_bulkhead);
enables |= OHCI_CTRL_BLE;
temp |= OHCI_BLF;
}
}
if (hcd->self.bandwidth_isoc_reqs || hcd->self.bandwidth_int_reqs)
enables |= OHCI_CTRL_PLE|OHCI_CTRL_IE;
if (enables) {
ohci_dbg (ohci, "restarting schedules ... %08x\n", enables);
ohci->hc_control |= enables;
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
if (temp)
ohci_writel (ohci, temp, &ohci->regs->cmdstatus);
(void) ohci_readl (ohci, &ohci->regs->control);
}
return 0;
}
static int __devinit ohci_hcd_s5p_drv_probe(struct platform_device *pdev)
{
struct s5p_ohci_platdata *pdata;
struct s5p_ohci_hcd *s5p_ohci;
struct usb_hcd *hcd = NULL;
struct ohci_hcd *ohci;
struct resource *res;
int irq;
int err;
pdata = pdev->dev.platform_data;
if (!pdata) {
dev_err(&pdev->dev, "No platform data defined\n");
return -EINVAL;
}
s5p_ohci = kzalloc(sizeof(struct s5p_ohci_hcd), GFP_KERNEL);
if (!s5p_ohci)
return -ENOMEM;
s5p_ohci->dev = &pdev->dev;
hcd = usb_create_hcd(&ohci_s5p_hc_driver, &pdev->dev,
dev_name(&pdev->dev));
if (!hcd) {
dev_err(&pdev->dev, "Unable to create HCD\n");
err = -ENOMEM;
goto fail_hcd;
}
s5p_ohci->hcd = hcd;
s5p_ohci->clk = clk_get(&pdev->dev, "usbhost");
if (IS_ERR(s5p_ohci->clk)) {
dev_err(&pdev->dev, "Failed to get usbhost clock\n");
err = PTR_ERR(s5p_ohci->clk);
goto fail_clk;
}
err = clk_enable(s5p_ohci->clk);
if (err)
goto fail_clken;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "Failed to get I/O memory\n");
err = -ENXIO;
goto fail_io;
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
hcd->regs = ioremap(res->start, resource_size(res));
if (!hcd->regs) {
dev_err(&pdev->dev, "Failed to remap I/O memory\n");
err = -ENOMEM;
goto fail_io;
}
irq = platform_get_irq(pdev, 0);
if (!irq) {
dev_err(&pdev->dev, "Failed to get IRQ\n");
err = -ENODEV;
goto fail;
}
if (pdata->phy_init)
pdata->phy_init(pdev, S5P_USB_PHY_HOST);
ohci = hcd_to_ohci(hcd);
ohci_hcd_init(ohci);
#ifdef CONFIG_USB_EXYNOS_SWITCH
if (samsung_board_rev_is_0_0())
ohci->flags |= OHCI_QUIRK_SUPERIO;
#endif
err = usb_add_hcd(hcd, irq,
IRQF_DISABLED | IRQF_SHARED);
if (err) {
dev_err(&pdev->dev, "Failed to add USB HCD\n");
goto fail;
}
platform_set_drvdata(pdev, s5p_ohci);
create_ohci_sys_file(ohci);
s5p_ohci->power_on = 1;
#ifdef CONFIG_USB_EXYNOS_SWITCH
if (samsung_board_rev_is_0_0()) {
ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
(void)ohci_readl(ohci, &ohci->regs->intrdisable);
ohci_writel (ohci, RH_HS_LPS, &ohci->regs->roothub.status);
}
#endif
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
return 0;
fail:
iounmap(hcd->regs);
fail_io:
clk_disable(s5p_ohci->clk);
fail_clken:
clk_put(s5p_ohci->clk);
fail_clk:
usb_put_hcd(hcd);
fail_hcd:
kfree(s5p_ohci);
return err;
}
/* caller has locked the root hub */
static int ohci_hub_resume (struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
u32 temp, enables;
int status = -EINPROGRESS;
#if defined(CONFIG_REALTEK_VENUS_USB_1261) || defined(CONFIG_REALTEK_VENUS_USB_1261_ECO)
//FOR PULLING VENUS_USB_HOST_WRAPPER BIT6 HIGH BEFOR RESUME OHCI PORT
outl(inl(VENUS_USB_HOST_WRAPPER)| 1<<6, VENUS_USB_HOST_WRAPPER);
(void) ohci_init (ohci);
return ohci_restart (ohci);
#endif /* defined(CONFIG_REALTEK_VENUS_USB_1261) || defined(CONFIG_REALTEK_VENUS_USB_1261_ECO) */
if (time_before (jiffies, ohci->next_statechange))
msleep(5);
spin_lock_irq (&ohci->lock);
ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) {
/* this can happen after suspend-to-disk */
if (hcd->state == HC_STATE_RESUMING) {
ohci_dbg (ohci, "BIOS/SMM active, control %03x\n",
ohci->hc_control);
status = -EBUSY;
/* this happens when pmcore resumes HC then root */
} else {
ohci_dbg (ohci, "duplicate resume\n");
status = 0;
}
} else switch (ohci->hc_control & OHCI_CTRL_HCFS) {
case OHCI_USB_SUSPEND:
#ifdef CONFIG_REALTEK_VENUS_USB //cfyeh+
//for pulling VENUS_USB_HOST_WRAPPER bit6 high befor resume OHCI port
outl(inl(VENUS_USB_HOST_WRAPPER)| 1<<6, VENUS_USB_HOST_WRAPPER);
#endif /* CONFIG_REALTEK_VENUS_USB */ //cfyeh-
ohci->hc_control &= ~(OHCI_CTRL_HCFS|OHCI_SCHED_ENABLES);
ohci->hc_control |= OHCI_USB_RESUME;
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
(void) ohci_readl (ohci, &ohci->regs->control);
ohci_dbg (ohci, "resume root hub\n");
break;
case OHCI_USB_RESUME:
/* HCFS changes sometime after INTR_RD */
ohci_info (ohci, "wakeup\n");
break;
case OHCI_USB_OPER:
ohci_dbg (ohci, "already resumed\n");
status = 0;
break;
default: /* RESET, we lost power */
ohci_dbg (ohci, "root hub hardware reset\n");
status = -EBUSY;
}
spin_unlock_irq (&ohci->lock);
if (status == -EBUSY) {
(void) ohci_init (ohci);
return ohci_restart (ohci);
}
if (status != -EINPROGRESS)
return status;
temp = roothub_a (ohci) & RH_A_NDP;
enables = 0;
while (temp--) {
u32 stat = ohci_readl (ohci,
&ohci->regs->roothub.portstatus [temp]);
/* force global, not selective, resume */
if (!(stat & RH_PS_PSS))
continue;
ohci_writel (ohci, RH_PS_POCI,
&ohci->regs->roothub.portstatus [temp]);
}
/* Some controllers (lucent erratum) need extra-long delays */
hcd->state = HC_STATE_RESUMING;
mdelay (20 /* usb 11.5.1.10 */ + 15);
temp = ohci_readl (ohci, &ohci->regs->control);
temp &= OHCI_CTRL_HCFS;
if (temp != OHCI_USB_RESUME) {
ohci_err (ohci, "controller won't resume\n");
return -EBUSY;
}
/* disable old schedule state, reinit from scratch */
ohci_writel (ohci, 0, &ohci->regs->ed_controlhead);
ohci_writel (ohci, 0, &ohci->regs->ed_controlcurrent);
ohci_writel (ohci, 0, &ohci->regs->ed_bulkhead);
ohci_writel (ohci, 0, &ohci->regs->ed_bulkcurrent);
ohci_writel (ohci, 0, &ohci->regs->ed_periodcurrent);
ohci_writel (ohci, (u32) ohci->hcca_dma, &ohci->regs->hcca);
/* Sometimes PCI D3 suspend trashes frame timings ... */
periodic_reinit (ohci);
/* interrupts might have been disabled */
ohci_writel (ohci, OHCI_INTR_INIT, &ohci->regs->intrenable);
if (ohci->ed_rm_list)
ohci_writel (ohci, OHCI_INTR_SF, &ohci->regs->intrenable);
ohci_writel (ohci, ohci_readl (ohci, &ohci->regs->intrstatus),
&ohci->regs->intrstatus);
/* Then re-enable operations */
ohci_writel (ohci, OHCI_USB_OPER, &ohci->regs->control);
(void) ohci_readl (ohci, &ohci->regs->control);
msleep (3);
temp = OHCI_CONTROL_INIT | OHCI_USB_OPER;
if (hcd->can_wakeup)
temp |= OHCI_CTRL_RWC;
ohci->hc_control = temp;
ohci_writel (ohci, temp, &ohci->regs->control);
(void) ohci_readl (ohci, &ohci->regs->control);
/* TRSMRCY */
msleep (10);
/* keep it alive for ~5x suspend + resume costs */
ohci->next_statechange = jiffies + msecs_to_jiffies (250);
/* maybe turn schedules back on */
enables = 0;
temp = 0;
if (!ohci->ed_rm_list) {
if (ohci->ed_controltail) {
ohci_writel (ohci,
find_head (ohci->ed_controltail)->dma,
&ohci->regs->ed_controlhead);
enables |= OHCI_CTRL_CLE;
temp |= OHCI_CLF;
}
if (ohci->ed_bulktail) {
ohci_writel (ohci, find_head (ohci->ed_bulktail)->dma,
&ohci->regs->ed_bulkhead);
enables |= OHCI_CTRL_BLE;
temp |= OHCI_BLF;
}
}
if (hcd->self.bandwidth_isoc_reqs || hcd->self.bandwidth_int_reqs)
enables |= OHCI_CTRL_PLE|OHCI_CTRL_IE;
if (enables) {
ohci_dbg (ohci, "restarting schedules ... %08x\n", enables);
ohci->hc_control |= enables;
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
if (temp)
ohci_writel (ohci, temp, &ohci->regs->cmdstatus);
(void) ohci_readl (ohci, &ohci->regs->control);
}
hcd->state = HC_STATE_RUNNING;
return 0;
}
static int
ohci_hub_status_data (struct usb_hcd *hcd, char *buf)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
int ports, i, changed = 0, length = 1;
int can_suspend = hcd->can_wakeup;
unsigned long flags;
spin_lock_irqsave (&ohci->lock, flags);
// hack by cfyeh for usb suspend/resume
if(usb_ehci_suspend_flag == 1)
{
can_suspend = 0;
goto done;
}
/* handle autosuspended root: finish resuming before
* letting khubd or root hub timer see state changes.
*/
if ((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER
|| !HC_IS_RUNNING(hcd->state)) {
can_suspend = 0;
goto done;
}
ports = roothub_a (ohci) & RH_A_NDP;
if (ports > MAX_ROOT_PORTS) {
ohci_err (ohci, "bogus NDP=%d, rereads as NDP=%d\n", ports,
ohci_readl (ohci, &ohci->regs->roothub.a) & RH_A_NDP);
/* retry later; "should not happen" */
goto done;
}
/* init status */
if (roothub_status (ohci) & (RH_HS_LPSC | RH_HS_OCIC))
buf [0] = changed = 1;
else
buf [0] = 0;
if (ports > 7) {
buf [1] = 0;
length++;
}
/* look at each port */
for (i = 0; i < ports; i++) {
u32 status = roothub_portstatus (ohci, i);
if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC
| RH_PS_OCIC | RH_PS_PRSC)) {
changed = 1;
if (i < 7)
buf [0] |= 1 << (i + 1);
else
buf [1] |= 1 << (i - 7);
continue;
}
/* can suspend if no ports are enabled; or if all all
* enabled ports are suspended AND remote wakeup is on.
*/
if (!(status & RH_PS_CCS))
continue;
if ((status & RH_PS_PSS) && hcd->remote_wakeup)
continue;
can_suspend = 0;
}
done:
spin_unlock_irqrestore (&ohci->lock, flags);
#if defined(CONFIG_PM) || defined(CONFIG_REALTEK_VENUS_USB) //cfyeh+ 2005/11/07
/* save power by suspending idle root hubs;
* INTR_RD wakes us when there's work
* NOTE: if we can do this, we don't need a root hub timer!
*/
if (can_suspend
&& !changed
&& !ohci->ed_rm_list
&& ((OHCI_CTRL_HCFS | OHCI_SCHED_ENABLES)
& ohci->hc_control)
== OHCI_USB_OPER
&& time_after (jiffies, ohci->next_statechange)
&& usb_trylock_device (hcd->self.root_hub)
) {
ohci_vdbg (ohci, "autosuspend\n");
(void) ohci_hub_suspend (hcd);
hcd->state = HC_STATE_RUNNING;
usb_unlock_device (hcd->self.root_hub);
}
#endif
return changed ? length : 0;
}
static int ohci_hub_suspend (struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
int status = 0;
unsigned long flags;
#ifndef USB_FREE_IRQ_AT_SUSPEND_MODE
#if defined(CONFIG_REALTEK_VENUS_USB_1261) || defined(CONFIG_REALTEK_VENUS_USB_1261_ECO)
return 0;
#endif /* defined(CONFIG_REALTEK_VENUS_USB_1261) || defined(CONFIG_REALTEK_VENUS_USB_1261_ECO) */
#endif /* USB_FREE_IRQ_AT_SUSPEND_MODE */
spin_lock_irqsave (&ohci->lock, flags);
ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
switch (ohci->hc_control & OHCI_CTRL_HCFS) {
case OHCI_USB_RESUME:
ohci_dbg (ohci, "resume/suspend?\n");
ohci->hc_control &= ~OHCI_CTRL_HCFS;
ohci->hc_control |= OHCI_USB_RESET;
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
(void) ohci_readl (ohci, &ohci->regs->control);
/* FALL THROUGH */
case OHCI_USB_RESET:
status = -EBUSY;
ohci_dbg (ohci, "needs reinit!\n");
goto done;
case OHCI_USB_SUSPEND:
ohci_dbg (ohci, "already suspended\n");
goto done;
}
ohci_dbg (ohci, "suspend root hub\n");
/* First stop any processing */
hcd->state = HC_STATE_QUIESCING;
if (ohci->hc_control & OHCI_SCHED_ENABLES) {
int limit;
ohci->hc_control &= ~OHCI_SCHED_ENABLES;
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
ohci_writel (ohci, OHCI_INTR_SF, &ohci->regs->intrstatus);
/* sched disables take effect on the next frame,
* then the last WDH could take 6+ msec
*/
ohci_dbg (ohci, "stopping schedules ...\n");
limit = 2000;
while (limit > 0) {
udelay (250);
limit =- 250;
if (ohci_readl (ohci, &ohci->regs->intrstatus)
& OHCI_INTR_SF)
break;
}
dl_done_list (ohci, NULL);
mdelay (7);
}
dl_done_list (ohci, NULL);
finish_unlinks (ohci, ohci_frame_no(ohci), NULL);
ohci_writel (ohci, ohci_readl (ohci, &ohci->regs->intrstatus),
&ohci->regs->intrstatus);
/* maybe resume can wake root hub */
if (hcd->remote_wakeup)
ohci->hc_control |= OHCI_CTRL_RWE;
else
ohci->hc_control &= ~OHCI_CTRL_RWE;
/* Suspend hub */
ohci->hc_control &= ~OHCI_CTRL_HCFS;
ohci->hc_control |= OHCI_USB_SUSPEND;
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
(void) ohci_readl (ohci, &ohci->regs->control);
/* no resumes until devices finish suspending */
ohci->next_statechange = jiffies + msecs_to_jiffies (5);
done:
if (status == 0)
hcd->state = HC_STATE_SUSPENDED;
spin_unlock_irqrestore (&ohci->lock, flags);
return status;
}