int smdhsic_pm_resume_AP(void)
{
int r;
int expire = 500;
int pending_spin = 20;
int suspended_spin = 20;
struct completion done;
struct device *dev;
if (!g_usbdev.usbdev) {
smdctl_request_connection_recover(true);
return -ENODEV;
}
dev = &g_usbdev.usbdev->dev;
retry:
/* dpm_suspending can be set during RPM STATUS changing */
if (g_usbdev.hsic && g_usbdev.hsic->dpm_suspending)
return -EAGAIN;
switch (dev->power.runtime_status) {
case RPM_SUSPENDED:
pr_debug("%s: HSIC suspended\n", __func__);
init_completion(&done);
r = smdctl_request_slave_wakeup(&done);
if (r <= 0 &&
!wait_for_completion_timeout(&done,
msecs_to_jiffies(expire))) {
pr_err("%s: HSIC Resume timeout %d\n",
__func__, expire);
r = smdctl_request_slave_wakeup(NULL);
if (r <= 0) {
if (g_usbdev.hsic &&
g_usbdev.hsic->resume_failcnt++ > 5) {
g_usbdev.hsic->resume_failcnt = 0;
smdctl_request_connection_recover(true);
return -EFAULT;
}
return -ETIMEDOUT;
}
}
if (suspended_spin-- <= 0) {
if (g_usbdev.hsic &&
g_usbdev.hsic->resume_failcnt++ > 5) {
g_usbdev.hsic->resume_failcnt = 0;
smdctl_request_connection_recover(true);
smdctl_request_slave_wakeup(NULL);
return -EFAULT;
}
smdctl_request_slave_wakeup(NULL);
return -ETIMEDOUT;
}
smdctl_request_slave_wakeup(NULL);
msleep(100);
goto retry;
case RPM_SUSPENDING:
case RPM_RESUMING:
pr_debug("%s: HSIC status : %d spin: %d\n", __func__,
dev->power.runtime_status,
pending_spin);
if (pending_spin == 0) {
pr_err("%s: Modem runtime pm timeout\n",
__func__);
if (g_usbdev.hsic &&
g_usbdev.hsic->resume_failcnt++ > 5) {
g_usbdev.hsic->resume_failcnt = 0;
smdctl_request_connection_recover(true);
return -EFAULT;
}
return -ETIMEDOUT;
}
pending_spin--;
usleep_range(5000, 10000);
goto retry;
case RPM_ACTIVE:
if (g_usbdev.hsic)
g_usbdev.hsic->resume_failcnt = 0;
break;
default:
return -EIO;
}
return 0;
}
static void smdhsic_disconnect(struct usb_interface *intf)
{
int devid;
struct usb_interface *smd_intf;
struct str_intf_priv *intfpriv;
struct usb_device *device = NULL;
pr_info("%s: Called\n", __func__);
intfpriv = usb_get_intfdata(intf);
if (!intfpriv) {
pr_err("%s: intfpriv is NULL\n", __func__);
goto err_get_intfdata;
}
device = get_usb_device(intfpriv);
devid = GET_DEVID(intfpriv->devid);
pr_debug("%s : devid : %d\n", __func__, devid);
smd_intf = get_usb_intf(intfpriv);
if (!smd_intf) {
pr_err("smd_intf is NULL\n");
goto err_get_usb_intf;
}
if (smd_intf != intf) {
pr_err("smd_intf is not same intf\n");
goto err_mismatched_intf;
}
usb_driver_release_interface(get_usb_driver(intf), smd_intf);
if (!device)
usb_put_dev(device);
pm_runtime_disable(&device->dev);
if (g_usbdev.hsic)
cancel_delayed_work(&g_usbdev.hsic->pm_runtime_work);
switch (devid) {
case FMT_DEV_ID:
flush_txurb(&g_usbdev.ipc_urbq);
flush_txurb(&g_usbdev.data_urbq);
smdctl_request_connection_recover(true);
case RAW_DEV_ID:
case RFS_DEV_ID:
case CMD_DEV_ID:
case DOWN_DEV_ID:
if (emu_discon_func[devid])
emu_discon_func[devid](g_usbdev.smd_device[devid]);
else
kfree(intfpriv->data);
break;
default:
pr_warn("%s:Undefined Callback Function\n",
__func__);
}
/* to prevent sleep at connection recover
* when, usb suspend and recover routine overlap
* it makes huge delay on modem reset
*/
wake_lock_timeout(&g_usbdev.txwake, 20*HZ);
kfree(intfpriv);
usb_set_intfdata(intf, NULL);
g_usbdev.usbdev = NULL;
g_usbdev.suspended = 0;
g_usbdev.hsic = NULL;
return;
err_mismatched_intf:
err_get_usb_intf:
if (!device)
usb_put_dev(device);
err_get_intfdata:
pr_err("release(2) : %p\n", intf);
usb_driver_release_interface(get_usb_driver(intf), intf);
return;
}
int smdhsic_pm_resume(void)
{
int r = 0;
int spin = 20;
struct device *dev;
pr_debug("%s\n", __func__);
if (!g_usbdev.usbdev) {
smdctl_request_connection_recover(true);
return -EFAULT;
}
if (g_usbdev.hsic && g_usbdev.hsic->dpm_suspending) {
pr_debug("%s : dpm is suspending just return\n", __func__);
return 0;
}
dev = &g_usbdev.usbdev->dev;
if (usb_runtime_pm_ap_initiated_L2) {
wait_active:
if (g_usbdev.hsic && g_usbdev.hsic->dpm_suspending) {
pr_debug("%s : dpm is suspending just return\n",
__func__);
return 0;
}
switch (dev->power.runtime_status) {
case RPM_SUSPENDED:
r = pm_runtime_resume(dev);
if (!r && dev->power.timer_expires == 0
&& dev->power.request_pending == false) {
pr_err("%s:run time idle\n", __func__);
pm_runtime_idle(dev);
} else if (r < 0) {
pr_err("%s : pm_runtime_resume failed : %d\n", __func__, r);
smdctl_request_connection_recover(true);
return r;
}
msleep(20);
goto wait_active;
break;
case RPM_SUSPENDING:
case RPM_RESUMING:
if (spin-- < 0) {
if (g_usbdev.hsic &&
g_usbdev.hsic->resume_failcnt++ > 5) {
g_usbdev.hsic->resume_failcnt = 0;
smdctl_request_connection_recover(true);
return -EFAULT;
}
return -ETIMEDOUT;
}
msleep(20);
goto wait_active;
case RPM_ACTIVE:
if (g_usbdev.hsic)
g_usbdev.hsic->resume_failcnt = 0;
break;
default:
break;
}
return 0;
}
pr_debug("%s (%d)\n", __func__, dev->power.runtime_status);
pr_debug("%s(pwr.usg_cnt:%d)\n",
__func__, atomic_read(&dev->power.usage_count));
if (!(atomic_read(&dev->power.usage_count)))
r = pm_runtime_get_sync(dev);
pr_debug("%s done %d \t %d\n",
__func__, r, dev->power.usage_count.counter);
return r;
}
static void smdhsic_disconnect(struct usb_interface *intf)
{
int devid;
struct usb_interface *smd_intf;
struct str_intf_priv *intfpriv;
struct usb_device *device = NULL;
pr_info("%s: Called\n", __func__);
intfpriv = usb_get_intfdata(intf);
if (!intfpriv) {
pr_err("%s: intfpriv is NULL\n", __func__);
goto err_get_intfdata;
}
device = get_usb_device(intfpriv);
devid = GET_DEVID(intfpriv->devid);
pr_debug("%s : devid : %d\n", __func__, devid);
smd_intf = get_usb_intf(intfpriv);
if (!smd_intf) {
pr_err("smd_intf is NULL\n");
goto err_get_usb_intf;
}
if (smd_intf != intf) {
pr_err("smd_intf is not same intf\n");
goto err_mismatched_intf;
}
usb_driver_release_interface(get_usb_driver(intf), smd_intf);
if (!device)
usb_put_dev(device);
switch (devid) {
case FMT_DEV_ID:
pm_runtime_disable(&device->dev);
if (g_usbdev.hsic)
cancel_delayed_work(&g_usbdev.hsic->pm_runtime_work);
smdctl_request_connection_recover(true);
case RAW_DEV_ID:
case RFS_DEV_ID:
case CMD_DEV_ID:
case DOWN_DEV_ID:
if (emu_discon_func[devid])
emu_discon_func[devid](g_usbdev.smd_device[devid]);
else
kfree(intfpriv->data);
break;
default:
pr_warn("%s:Undefined Callback Function\n",
__func__);
}
/* Power on/off kernel-panic workaround,
* if USB suspend cmd was queued in power.work before disconnect,
* reset the runtime PM request value to PM_REQ_NONE
*/
device->dev.power.request = RPM_REQ_NONE;
kfree(intfpriv);
usb_set_intfdata(intf, NULL);
g_usbdev.usbdev = NULL;
g_usbdev.suspended = 0;
g_usbdev.hsic = NULL;
return;
err_mismatched_intf:
err_get_usb_intf:
if (device)
usb_put_dev(device);
err_get_intfdata:
pr_err("release(2) : %p\n", intf);
usb_driver_release_interface(get_usb_driver(intf), intf);
return;
}