Merge branch 'autosuspend' into for-next
Conflicts:
drivers/hid/hid-core.c
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index e56f8d5..5746a59 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1819,6 +1819,22 @@
}
EXPORT_SYMBOL_GPL(hid_unregister_driver);
+int hid_check_keys_pressed(struct hid_device *hid)
+{
+ struct hid_input *hidinput;
+ int i;
+
+ list_for_each_entry(hidinput, &hid->inputs, list) {
+ for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
+ if (hidinput->input->key[i])
+ return 1;
+ }
+
+ return 0;
+}
+
+EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
+
static int __init hid_init(void)
{
int ret;
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 02b19db..e263d47 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -181,9 +181,17 @@
dev = hidraw_table[minor];
if (!dev->open++) {
+ if (dev->hid->ll_driver->power) {
+ err = dev->hid->ll_driver->power(dev->hid, PM_HINT_FULLON);
+ if (err < 0)
+ goto out_unlock;
+ }
err = dev->hid->ll_driver->open(dev->hid);
- if (err < 0)
+ if (err < 0) {
+ if (dev->hid->ll_driver->power)
+ dev->hid->ll_driver->power(dev->hid, PM_HINT_NORMAL);
dev->open--;
+ }
}
out_unlock:
@@ -209,10 +217,13 @@
list_del(&list->node);
dev = hidraw_table[minor];
if (!--dev->open) {
- if (list->hidraw->exist)
+ if (list->hidraw->exist) {
+ if (dev->hid->ll_driver->power)
+ dev->hid->ll_driver->power(dev->hid, PM_HINT_NORMAL);
dev->hid->ll_driver->close(dev->hid);
- else
+ } else {
kfree(list->hidraw);
+ }
}
kfree(list);
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index eed05a3..4306cb1 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -5,6 +5,7 @@
* Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
* Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
* Copyright (c) 2006-2008 Jiri Kosina
+ * Copyright (c) 2007-2008 Oliver Neukum
*/
/*
@@ -27,6 +28,7 @@
#include <asm/byteorder.h>
#include <linux/input.h>
#include <linux/wait.h>
+#include <linux/workqueue.h>
#include <linux/usb.h>
@@ -53,6 +55,10 @@
module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
+static unsigned int ignoreled;
+module_param_named(ignoreled, ignoreled, uint, 0644);
+MODULE_PARM_DESC(ignoreled, "Autosuspend with active leds");
+
/* Quirks specified at module load time */
static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL };
module_param_array_named(quirks, quirks_param, charp, NULL, 0444);
@@ -63,8 +69,13 @@
/*
* Input submission and I/O error handler.
*/
+static DEFINE_MUTEX(hid_open_mut);
+static struct workqueue_struct *resumption_waker;
static void hid_io_error(struct hid_device *hid);
+static int hid_submit_out(struct hid_device *hid);
+static int hid_submit_ctrl(struct hid_device *hid);
+static void hid_cancel_delayed_stuff(struct usbhid_device *usbhid);
/* Start up the input URB */
static int hid_start_in(struct hid_device *hid)
@@ -73,15 +84,16 @@
int rc = 0;
struct usbhid_device *usbhid = hid->driver_data;
- spin_lock_irqsave(&usbhid->inlock, flags);
- if (hid->open > 0 && !test_bit(HID_SUSPENDED, &usbhid->iofl) &&
+ spin_lock_irqsave(&usbhid->lock, flags);
+ if (hid->open > 0 &&
!test_bit(HID_DISCONNECTED, &usbhid->iofl) &&
+ !test_bit(HID_REPORTED_IDLE, &usbhid->iofl) &&
!test_and_set_bit(HID_IN_RUNNING, &usbhid->iofl)) {
rc = usb_submit_urb(usbhid->urbin, GFP_ATOMIC);
if (rc != 0)
clear_bit(HID_IN_RUNNING, &usbhid->iofl);
}
- spin_unlock_irqrestore(&usbhid->inlock, flags);
+ spin_unlock_irqrestore(&usbhid->lock, flags);
return rc;
}
@@ -145,7 +157,7 @@
unsigned long flags;
struct usbhid_device *usbhid = hid->driver_data;
- spin_lock_irqsave(&usbhid->inlock, flags);
+ spin_lock_irqsave(&usbhid->lock, flags);
/* Stop when disconnected */
if (test_bit(HID_DISCONNECTED, &usbhid->iofl))
@@ -175,7 +187,51 @@
mod_timer(&usbhid->io_retry,
jiffies + msecs_to_jiffies(usbhid->retry_delay));
done:
- spin_unlock_irqrestore(&usbhid->inlock, flags);
+ spin_unlock_irqrestore(&usbhid->lock, flags);
+}
+
+static void usbhid_mark_busy(struct usbhid_device *usbhid)
+{
+ struct usb_interface *intf = usbhid->intf;
+
+ usb_mark_last_busy(interface_to_usbdev(intf));
+}
+
+static int usbhid_restart_out_queue(struct usbhid_device *usbhid)
+{
+ struct hid_device *hid = usb_get_intfdata(usbhid->intf);
+ int kicked;
+
+ if (!hid)
+ return 0;
+
+ if ((kicked = (usbhid->outhead != usbhid->outtail))) {
+ dbg("Kicking head %d tail %d", usbhid->outhead, usbhid->outtail);
+ if (hid_submit_out(hid)) {
+ clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
+ wake_up(&usbhid->wait);
+ }
+ }
+ return kicked;
+}
+
+static int usbhid_restart_ctrl_queue(struct usbhid_device *usbhid)
+{
+ struct hid_device *hid = usb_get_intfdata(usbhid->intf);
+ int kicked;
+
+ WARN_ON(hid == NULL);
+ if (!hid)
+ return 0;
+
+ if ((kicked = (usbhid->ctrlhead != usbhid->ctrltail))) {
+ dbg("Kicking head %d tail %d", usbhid->ctrlhead, usbhid->ctrltail);
+ if (hid_submit_ctrl(hid)) {
+ clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
+ wake_up(&usbhid->wait);
+ }
+ }
+ return kicked;
}
/*
@@ -190,12 +246,23 @@
switch (urb->status) {
case 0: /* success */
+ usbhid_mark_busy(usbhid);
usbhid->retry_delay = 0;
hid_input_report(urb->context, HID_INPUT_REPORT,
urb->transfer_buffer,
urb->actual_length, 1);
+ /*
+ * autosuspend refused while keys are pressed
+ * because most keyboards don't wake up when
+ * a key is released
+ */
+ if (hid_check_keys_pressed(hid))
+ set_bit(HID_KEYS_PRESSED, &usbhid->iofl);
+ else
+ clear_bit(HID_KEYS_PRESSED, &usbhid->iofl);
break;
case -EPIPE: /* stall */
+ usbhid_mark_busy(usbhid);
clear_bit(HID_IN_RUNNING, &usbhid->iofl);
set_bit(HID_CLEAR_HALT, &usbhid->iofl);
schedule_work(&usbhid->reset_work);
@@ -209,6 +276,7 @@
case -EPROTO: /* protocol error or unplug */
case -ETIME: /* protocol error or unplug */
case -ETIMEDOUT: /* Should never happen, but... */
+ usbhid_mark_busy(usbhid);
clear_bit(HID_IN_RUNNING, &usbhid->iofl);
hid_io_error(hid);
return;
@@ -239,16 +307,25 @@
report = usbhid->out[usbhid->outtail].report;
raw_report = usbhid->out[usbhid->outtail].raw_report;
- usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
- usbhid->urbout->dev = hid_to_usb_dev(hid);
- memcpy(usbhid->outbuf, raw_report, usbhid->urbout->transfer_buffer_length);
- kfree(raw_report);
+ if (!test_bit(HID_REPORTED_IDLE, &usbhid->iofl)) {
+ usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
+ usbhid->urbout->dev = hid_to_usb_dev(hid);
+ memcpy(usbhid->outbuf, raw_report, usbhid->urbout->transfer_buffer_length);
+ kfree(raw_report);
- dbg_hid("submitting out urb\n");
+ dbg_hid("submitting out urb\n");
- if (usb_submit_urb(usbhid->urbout, GFP_ATOMIC)) {
- err_hid("usb_submit_urb(out) failed");
- return -1;
+ if (usb_submit_urb(usbhid->urbout, GFP_ATOMIC)) {
+ err_hid("usb_submit_urb(out) failed");
+ return -1;
+ }
+ } else {
+ /*
+ * queue work to wake up the device.
+ * as the work queue is freezeable, this is safe
+ * with respect to STD and STR
+ */
+ queue_work(resumption_waker, &usbhid->restart_work);
}
return 0;
@@ -266,41 +343,50 @@
raw_report = usbhid->ctrl[usbhid->ctrltail].raw_report;
dir = usbhid->ctrl[usbhid->ctrltail].dir;
- len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
- if (dir == USB_DIR_OUT) {
- usbhid->urbctrl->pipe = usb_sndctrlpipe(hid_to_usb_dev(hid), 0);
- usbhid->urbctrl->transfer_buffer_length = len;
- memcpy(usbhid->ctrlbuf, raw_report, len);
- kfree(raw_report);
+ if (!test_bit(HID_REPORTED_IDLE, &usbhid->iofl)) {
+ len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
+ if (dir == USB_DIR_OUT) {
+ usbhid->urbctrl->pipe = usb_sndctrlpipe(hid_to_usb_dev(hid), 0);
+ usbhid->urbctrl->transfer_buffer_length = len;
+ memcpy(usbhid->ctrlbuf, raw_report, len);
+ kfree(raw_report);
+ } else {
+ int maxpacket, padlen;
+
+ usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0);
+ maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0);
+ if (maxpacket > 0) {
+ padlen = DIV_ROUND_UP(len, maxpacket);
+ padlen *= maxpacket;
+ if (padlen > usbhid->bufsize)
+ padlen = usbhid->bufsize;
+ } else
+ padlen = 0;
+ usbhid->urbctrl->transfer_buffer_length = padlen;
+ }
+ usbhid->urbctrl->dev = hid_to_usb_dev(hid);
+
+ usbhid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
+ usbhid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
+ usbhid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
+ usbhid->cr->wIndex = cpu_to_le16(usbhid->ifnum);
+ usbhid->cr->wLength = cpu_to_le16(len);
+
+ dbg_hid("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u\n",
+ usbhid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
+ usbhid->cr->wValue, usbhid->cr->wIndex, usbhid->cr->wLength);
+
+ if (usb_submit_urb(usbhid->urbctrl, GFP_ATOMIC)) {
+ err_hid("usb_submit_urb(ctrl) failed");
+ return -1;
+ }
} else {
- int maxpacket, padlen;
-
- usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0);
- maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0);
- if (maxpacket > 0) {
- padlen = DIV_ROUND_UP(len, maxpacket);
- padlen *= maxpacket;
- if (padlen > usbhid->bufsize)
- padlen = usbhid->bufsize;
- } else
- padlen = 0;
- usbhid->urbctrl->transfer_buffer_length = padlen;
- }
- usbhid->urbctrl->dev = hid_to_usb_dev(hid);
-
- usbhid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
- usbhid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
- usbhid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
- usbhid->cr->wIndex = cpu_to_le16(usbhid->ifnum);
- usbhid->cr->wLength = cpu_to_le16(len);
-
- dbg_hid("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u\n",
- usbhid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
- usbhid->cr->wValue, usbhid->cr->wIndex, usbhid->cr->wLength);
-
- if (usb_submit_urb(usbhid->urbctrl, GFP_ATOMIC)) {
- err_hid("usb_submit_urb(ctrl) failed");
- return -1;
+ /*
+ * queue work to wake up the device.
+ * as the work queue is freezeable, this is safe
+ * with respect to STD and STR
+ */
+ queue_work(resumption_waker, &usbhid->restart_work);
}
return 0;
@@ -332,7 +418,7 @@
"received\n", urb->status);
}
- spin_lock_irqsave(&usbhid->outlock, flags);
+ spin_lock_irqsave(&usbhid->lock, flags);
if (unplug)
usbhid->outtail = usbhid->outhead;
@@ -344,12 +430,12 @@
clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
wake_up(&usbhid->wait);
}
- spin_unlock_irqrestore(&usbhid->outlock, flags);
+ spin_unlock_irqrestore(&usbhid->lock, flags);
return;
}
clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
- spin_unlock_irqrestore(&usbhid->outlock, flags);
+ spin_unlock_irqrestore(&usbhid->lock, flags);
wake_up(&usbhid->wait);
}
@@ -361,12 +447,11 @@
{
struct hid_device *hid = urb->context;
struct usbhid_device *usbhid = hid->driver_data;
- unsigned long flags;
- int unplug = 0;
+ int unplug = 0, status = urb->status;
- spin_lock_irqsave(&usbhid->ctrllock, flags);
+ spin_lock(&usbhid->lock);
- switch (urb->status) {
+ switch (status) {
case 0: /* success */
if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_IN)
hid_input_report(urb->context,
@@ -383,7 +468,7 @@
break;
default: /* error */
dev_warn(&urb->dev->dev, "ctrl urb status %d "
- "received\n", urb->status);
+ "received\n", status);
}
if (unplug)
@@ -396,19 +481,18 @@
clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
wake_up(&usbhid->wait);
}
- spin_unlock_irqrestore(&usbhid->ctrllock, flags);
+ spin_unlock(&usbhid->lock);
return;
}
clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
- spin_unlock_irqrestore(&usbhid->ctrllock, flags);
+ spin_unlock(&usbhid->lock);
wake_up(&usbhid->wait);
}
-void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
+void __usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
{
int head;
- unsigned long flags;
struct usbhid_device *usbhid = hid->driver_data;
int len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
@@ -416,18 +500,13 @@
return;
if (usbhid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
-
- spin_lock_irqsave(&usbhid->outlock, flags);
-
if ((head = (usbhid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == usbhid->outtail) {
- spin_unlock_irqrestore(&usbhid->outlock, flags);
dev_warn(&hid->dev, "output queue full\n");
return;
}
usbhid->out[usbhid->outhead].raw_report = kmalloc(len, GFP_ATOMIC);
if (!usbhid->out[usbhid->outhead].raw_report) {
- spin_unlock_irqrestore(&usbhid->outlock, flags);
dev_warn(&hid->dev, "output queueing failed\n");
return;
}
@@ -438,15 +517,10 @@
if (!test_and_set_bit(HID_OUT_RUNNING, &usbhid->iofl))
if (hid_submit_out(hid))
clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
-
- spin_unlock_irqrestore(&usbhid->outlock, flags);
return;
}
- spin_lock_irqsave(&usbhid->ctrllock, flags);
-
if ((head = (usbhid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == usbhid->ctrltail) {
- spin_unlock_irqrestore(&usbhid->ctrllock, flags);
dev_warn(&hid->dev, "control queue full\n");
return;
}
@@ -454,7 +528,6 @@
if (dir == USB_DIR_OUT) {
usbhid->ctrl[usbhid->ctrlhead].raw_report = kmalloc(len, GFP_ATOMIC);
if (!usbhid->ctrl[usbhid->ctrlhead].raw_report) {
- spin_unlock_irqrestore(&usbhid->ctrllock, flags);
dev_warn(&hid->dev, "control queueing failed\n");
return;
}
@@ -467,15 +540,25 @@
if (!test_and_set_bit(HID_CTRL_RUNNING, &usbhid->iofl))
if (hid_submit_ctrl(hid))
clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
+}
- spin_unlock_irqrestore(&usbhid->ctrllock, flags);
+void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
+{
+ struct usbhid_device *usbhid = hid->driver_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&usbhid->lock, flags);
+ __usbhid_submit_report(hid, report, dir);
+ spin_unlock_irqrestore(&usbhid->lock, flags);
}
EXPORT_SYMBOL_GPL(usbhid_submit_report);
static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
{
struct hid_device *hid = input_get_drvdata(dev);
+ struct usbhid_device *usbhid = hid->driver_data;
struct hid_field *field;
+ unsigned long flags;
int offset;
if (type == EV_FF)
@@ -490,6 +573,15 @@
}
hid_set_field(field, offset, value);
+ if (value) {
+ spin_lock_irqsave(&usbhid->lock, flags);
+ usbhid->ledcount++;
+ spin_unlock_irqrestore(&usbhid->lock, flags);
+ } else {
+ spin_lock_irqsave(&usbhid->lock, flags);
+ usbhid->ledcount--;
+ spin_unlock_irqrestore(&usbhid->lock, flags);
+ }
usbhid_submit_report(hid, field->report, USB_DIR_OUT);
return 0;
@@ -538,15 +630,22 @@
struct usbhid_device *usbhid = hid->driver_data;
int res;
+ mutex_lock(&hid_open_mut);
if (!hid->open++) {
res = usb_autopm_get_interface(usbhid->intf);
+ /* the device must be awake to reliable request remote wakeup */
if (res < 0) {
hid->open--;
+ mutex_unlock(&hid_open_mut);
return -EIO;
}
+ usbhid->intf->needs_remote_wakeup = 1;
+ if (hid_start_in(hid))
+ hid_io_error(hid);
+
+ usb_autopm_put_interface(usbhid->intf);
}
- if (hid_start_in(hid))
- hid_io_error(hid);
+ mutex_unlock(&hid_open_mut);
return 0;
}
@@ -554,10 +653,22 @@
{
struct usbhid_device *usbhid = hid->driver_data;
+ mutex_lock(&hid_open_mut);
+
+ /* protecting hid->open to make sure we don't restart
+ * data acquistion due to a resumption we no longer
+ * care about
+ */
+ spin_lock_irq(&usbhid->lock);
if (!--hid->open) {
+ spin_unlock_irq(&usbhid->lock);
usb_kill_urb(usbhid->urbin);
- usb_autopm_put_interface(usbhid->intf);
+ flush_scheduled_work();
+ usbhid->intf->needs_remote_wakeup = 0;
+ } else {
+ spin_unlock_irq(&usbhid->lock);
}
+ mutex_unlock(&hid_open_mut);
}
/*
@@ -687,6 +798,25 @@
return ret;
}
+static void usbhid_restart_queues(struct usbhid_device *usbhid)
+{
+ if (usbhid->urbout)
+ usbhid_restart_out_queue(usbhid);
+ usbhid_restart_ctrl_queue(usbhid);
+}
+
+static void __usbhid_restart_queues(struct work_struct *work)
+{
+ struct usbhid_device *usbhid =
+ container_of(work, struct usbhid_device, restart_work);
+ int r;
+
+ r = usb_autopm_get_interface(usbhid->intf);
+ if (r < 0)
+ return;
+ usb_autopm_put_interface(usbhid->intf);
+}
+
static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
{
struct usbhid_device *usbhid = hid->driver_data;
@@ -853,11 +983,11 @@
init_waitqueue_head(&usbhid->wait);
INIT_WORK(&usbhid->reset_work, hid_reset);
+ INIT_WORK(&usbhid->restart_work, __usbhid_restart_queues);
setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid);
- spin_lock_init(&usbhid->inlock);
- spin_lock_init(&usbhid->outlock);
- spin_lock_init(&usbhid->ctrllock);
+ spin_lock_init(&usbhid->lock);
+ spin_lock_init(&usbhid->lock);
usbhid->intf = intf;
usbhid->ifnum = interface->desc.bInterfaceNumber;
@@ -909,15 +1039,14 @@
return;
clear_bit(HID_STARTED, &usbhid->iofl);
- spin_lock_irq(&usbhid->inlock); /* Sync with error handler */
+ spin_lock_irq(&usbhid->lock); /* Sync with error handler */
set_bit(HID_DISCONNECTED, &usbhid->iofl);
- spin_unlock_irq(&usbhid->inlock);
+ spin_unlock_irq(&usbhid->lock);
usb_kill_urb(usbhid->urbin);
usb_kill_urb(usbhid->urbout);
usb_kill_urb(usbhid->urbctrl);
- del_timer_sync(&usbhid->io_retry);
- cancel_work_sync(&usbhid->reset_work);
+ hid_cancel_delayed_stuff(usbhid);
if (hid->claimed & HID_CLAIMED_INPUT)
hidinput_disconnect(hid);
@@ -938,12 +1067,28 @@
hid_free_buffers(hid_to_usb_dev(hid), hid);
}
+static int usbhid_power(struct hid_device *hid, int lvl)
+{
+ int r = 0;
+
+ switch (lvl) {
+ case PM_HINT_FULLON:
+ r = usbhid_get_power(hid);
+ break;
+ case PM_HINT_NORMAL:
+ usbhid_put_power(hid);
+ break;
+ }
+ return r;
+}
+
static struct hid_ll_driver usb_hid_driver = {
.parse = usbhid_parse,
.start = usbhid_start,
.stop = usbhid_stop,
.open = usbhid_open,
.close = usbhid_close,
+ .power = usbhid_power,
.hidinput_input_event = usb_hidinput_input_event,
};
@@ -1052,19 +1197,126 @@
kfree(usbhid);
}
-static int hid_suspend(struct usb_interface *intf, pm_message_t message)
+static void hid_cancel_delayed_stuff(struct usbhid_device *usbhid)
{
- struct hid_device *hid = usb_get_intfdata (intf);
+ del_timer_sync(&usbhid->io_retry);
+ cancel_work_sync(&usbhid->restart_work);
+ cancel_work_sync(&usbhid->reset_work);
+}
+
+static void hid_cease_io(struct usbhid_device *usbhid)
+{
+ del_timer(&usbhid->io_retry);
+ usb_kill_urb(usbhid->urbin);
+ usb_kill_urb(usbhid->urbctrl);
+ usb_kill_urb(usbhid->urbout);
+}
+
+/* Treat USB reset pretty much the same as suspend/resume */
+static int hid_pre_reset(struct usb_interface *intf)
+{
+ struct hid_device *hid = usb_get_intfdata(intf);
struct usbhid_device *usbhid = hid->driver_data;
- if (!test_bit(HID_STARTED, &usbhid->iofl))
- return 0;
+ spin_lock_irq(&usbhid->lock);
+ set_bit(HID_RESET_PENDING, &usbhid->iofl);
+ spin_unlock_irq(&usbhid->lock);
+ cancel_work_sync(&usbhid->restart_work);
+ hid_cease_io(usbhid);
- spin_lock_irq(&usbhid->inlock); /* Sync with error handler */
- set_bit(HID_SUSPENDED, &usbhid->iofl);
- spin_unlock_irq(&usbhid->inlock);
- del_timer_sync(&usbhid->io_retry);
- usb_kill_urb(usbhid->urbin);
+ return 0;
+}
+
+/* Same routine used for post_reset and reset_resume */
+static int hid_post_reset(struct usb_interface *intf)
+{
+ struct usb_device *dev = interface_to_usbdev (intf);
+ struct hid_device *hid = usb_get_intfdata(intf);
+ struct usbhid_device *usbhid = hid->driver_data;
+ int status;
+
+ spin_lock_irq(&usbhid->lock);
+ clear_bit(HID_RESET_PENDING, &usbhid->iofl);
+ spin_unlock_irq(&usbhid->lock);
+ hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0);
+ /* FIXME: Any more reinitialization needed? */
+ status = hid_start_in(hid);
+ if (status < 0)
+ hid_io_error(hid);
+ usbhid_restart_queues(usbhid);
+
+ return 0;
+}
+
+int usbhid_get_power(struct hid_device *hid)
+{
+ struct usbhid_device *usbhid = hid->driver_data;
+
+ return usb_autopm_get_interface(usbhid->intf);
+}
+
+void usbhid_put_power(struct hid_device *hid)
+{
+ struct usbhid_device *usbhid = hid->driver_data;
+
+ usb_autopm_put_interface(usbhid->intf);
+}
+
+
+#ifdef CONFIG_PM
+static int hid_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct hid_device *hid = usb_get_intfdata(intf);
+ struct usbhid_device *usbhid = hid->driver_data;
+ struct usb_device *udev = interface_to_usbdev(intf);
+ int status;
+
+ if (udev->auto_pm) {
+ spin_lock_irq(&usbhid->lock); /* Sync with error handler */
+ if (!test_bit(HID_RESET_PENDING, &usbhid->iofl)
+ && !test_bit(HID_CLEAR_HALT, &usbhid->iofl)
+ && !test_bit(HID_OUT_RUNNING, &usbhid->iofl)
+ && !test_bit(HID_CTRL_RUNNING, &usbhid->iofl)
+ && !test_bit(HID_KEYS_PRESSED, &usbhid->iofl)
+ && (!usbhid->ledcount || ignoreled))
+ {
+ set_bit(HID_REPORTED_IDLE, &usbhid->iofl);
+ spin_unlock_irq(&usbhid->lock);
+ } else {
+ usbhid_mark_busy(usbhid);
+ spin_unlock_irq(&usbhid->lock);
+ return -EBUSY;
+ }
+
+ } else {
+ spin_lock_irq(&usbhid->lock);
+ set_bit(HID_REPORTED_IDLE, &usbhid->iofl);
+ spin_unlock_irq(&usbhid->lock);
+ if (usbhid_wait_io(hid) < 0)
+ return -EIO;
+ }
+
+ if (!ignoreled && udev->auto_pm) {
+ spin_lock_irq(&usbhid->lock);
+ if (test_bit(HID_LED_ON, &usbhid->iofl)) {
+ spin_unlock_irq(&usbhid->lock);
+ usbhid_mark_busy(usbhid);
+ return -EBUSY;
+ }
+ spin_unlock_irq(&usbhid->lock);
+ }
+
+ hid_cancel_delayed_stuff(usbhid);
+ hid_cease_io(usbhid);
+
+ if (udev->auto_pm && test_bit(HID_KEYS_PRESSED, &usbhid->iofl)) {
+ /* lost race against keypresses */
+ status = hid_start_in(hid);
+ if (status < 0)
+ hid_io_error(hid);
+ usbhid_mark_busy(usbhid);
+ return -EBUSY;
+ }
dev_dbg(&intf->dev, "suspend\n");
return 0;
}
@@ -1078,32 +1330,33 @@
if (!test_bit(HID_STARTED, &usbhid->iofl))
return 0;
- clear_bit(HID_SUSPENDED, &usbhid->iofl);
+ clear_bit(HID_REPORTED_IDLE, &usbhid->iofl);
+ usbhid_mark_busy(usbhid);
+
+ if (test_bit(HID_CLEAR_HALT, &usbhid->iofl) ||
+ test_bit(HID_RESET_PENDING, &usbhid->iofl))
+ schedule_work(&usbhid->reset_work);
usbhid->retry_delay = 0;
status = hid_start_in(hid);
- dev_dbg(&intf->dev, "resume status %d\n", status);
- return status;
-}
+ if (status < 0)
+ hid_io_error(hid);
+ usbhid_restart_queues(usbhid);
-/* Treat USB reset pretty much the same as suspend/resume */
-static int hid_pre_reset(struct usb_interface *intf)
-{
- /* FIXME: What if the interface is already suspended? */
- hid_suspend(intf, PMSG_ON);
+ dev_dbg(&intf->dev, "resume status %d\n", status);
return 0;
}
-/* Same routine used for post_reset and reset_resume */
-static int hid_post_reset(struct usb_interface *intf)
+static int hid_reset_resume(struct usb_interface *intf)
{
- struct usb_device *dev = interface_to_usbdev (intf);
+ struct hid_device *hid = usb_get_intfdata(intf);
+ struct usbhid_device *usbhid = hid->driver_data;
- hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0);
- /* FIXME: Any more reinitialization needed? */
-
- return hid_resume(intf);
+ clear_bit(HID_REPORTED_IDLE, &usbhid->iofl);
+ return hid_post_reset(intf);
}
+#endif /* CONFIG_PM */
+
static struct usb_device_id hid_usb_ids [] = {
{ .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
.bInterfaceClass = USB_INTERFACE_CLASS_HID },
@@ -1116,9 +1369,11 @@
.name = "usbhid",
.probe = hid_probe,
.disconnect = hid_disconnect,
+#ifdef CONFIG_PM
.suspend = hid_suspend,
.resume = hid_resume,
- .reset_resume = hid_post_reset,
+ .reset_resume = hid_reset_resume,
+#endif
.pre_reset = hid_pre_reset,
.post_reset = hid_post_reset,
.id_table = hid_usb_ids,
@@ -1137,7 +1392,11 @@
static int __init hid_init(void)
{
- int retval;
+ int retval = -ENOMEM;
+
+ resumption_waker = create_freezeable_workqueue("usbhid_resumer");
+ if (!resumption_waker)
+ goto no_queue;
retval = hid_register_driver(&hid_usb_driver);
if (retval)
goto hid_register_fail;
@@ -1161,6 +1420,8 @@
usbhid_quirks_init_fail:
hid_unregister_driver(&hid_usb_driver);
hid_register_fail:
+ destroy_workqueue(resumption_waker);
+no_queue:
return retval;
}
@@ -1170,6 +1431,7 @@
hiddev_exit();
usbhid_quirks_exit();
hid_unregister_driver(&hid_usb_driver);
+ destroy_workqueue(resumption_waker);
}
module_init(hid_init);
diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
index 93dcb7e..e9b436d 100644
--- a/drivers/hid/usbhid/hiddev.c
+++ b/drivers/hid/usbhid/hiddev.c
@@ -246,10 +246,12 @@
spin_unlock_irqrestore(&list->hiddev->list_lock, flags);
if (!--list->hiddev->open) {
- if (list->hiddev->exist)
+ if (list->hiddev->exist) {
usbhid_close(list->hiddev->hid);
- else
+ usbhid_put_power(list->hiddev->hid);
+ } else {
kfree(list->hiddev);
+ }
}
kfree(list);
@@ -300,6 +302,17 @@
list_add_tail(&list->node, &hiddev_table[i]->list);
spin_unlock_irq(&list->hiddev->list_lock);
+ if (!list->hiddev->open++)
+ if (list->hiddev->exist) {
+ struct hid_device *hid = hiddev_table[i]->hid;
+ res = usbhid_get_power(hid);
+ if (res < 0) {
+ res = -EIO;
+ goto bail;
+ }
+ usbhid_open(hid);
+ }
+
return 0;
bail:
file->private_data = NULL;
diff --git a/drivers/hid/usbhid/usbhid.h b/drivers/hid/usbhid/usbhid.h
index 9eb3056..08f505c 100644
--- a/drivers/hid/usbhid/usbhid.h
+++ b/drivers/hid/usbhid/usbhid.h
@@ -38,7 +38,10 @@
void usbhid_close(struct hid_device *hid);
int usbhid_open(struct hid_device *hid);
void usbhid_init_reports(struct hid_device *hid);
-void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir);
+void usbhid_submit_report
+(struct hid_device *hid, struct hid_report *report, unsigned char dir);
+int usbhid_get_power(struct hid_device *hid);
+void usbhid_put_power(struct hid_device *hid);
/* iofl flags */
#define HID_CTRL_RUNNING 1
@@ -49,6 +52,9 @@
#define HID_CLEAR_HALT 6
#define HID_DISCONNECTED 7
#define HID_STARTED 8
+#define HID_REPORTED_IDLE 9
+#define HID_KEYS_PRESSED 10
+#define HID_LED_ON 11
/*
* USB-specific HID struct, to be pointed to
@@ -66,7 +72,6 @@
struct urb *urbin; /* Input URB */
char *inbuf; /* Input buffer */
dma_addr_t inbuf_dma; /* Input buffer dma */
- spinlock_t inlock; /* Input fifo spinlock */
struct urb *urbctrl; /* Control URB */
struct usb_ctrlrequest *cr; /* Control request struct */
@@ -75,21 +80,22 @@
unsigned char ctrlhead, ctrltail; /* Control fifo head & tail */
char *ctrlbuf; /* Control buffer */
dma_addr_t ctrlbuf_dma; /* Control buffer dma */
- spinlock_t ctrllock; /* Control fifo spinlock */
struct urb *urbout; /* Output URB */
struct hid_output_fifo out[HID_CONTROL_FIFO_SIZE]; /* Output pipe fifo */
unsigned char outhead, outtail; /* Output pipe fifo head & tail */
char *outbuf; /* Output buffer */
dma_addr_t outbuf_dma; /* Output buffer dma */
- spinlock_t outlock; /* Output fifo spinlock */
+ spinlock_t lock; /* fifo spinlock */
unsigned long iofl; /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */
struct timer_list io_retry; /* Retry timer */
unsigned long stop_retry; /* Time to give up, in jiffies */
unsigned int retry_delay; /* Delay length in ms */
struct work_struct reset_work; /* Task context for resets */
+ struct work_struct restart_work; /* waking up for output to be done in a task */
wait_queue_head_t wait; /* For sleeping */
+ int ledcount; /* counting the number of active leds */
};
#define hid_to_usb_dev(hid_dev) \
diff --git a/include/linux/hid.h b/include/linux/hid.h
index a46cbea..a72876e 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -604,12 +604,17 @@
int (*open)(struct hid_device *hdev);
void (*close)(struct hid_device *hdev);
+ int (*power)(struct hid_device *hdev, int level);
+
int (*hidinput_input_event) (struct input_dev *idev, unsigned int type,
unsigned int code, int value);
int (*parse)(struct hid_device *hdev);
};
+#define PM_HINT_FULLON 1<<5
+#define PM_HINT_NORMAL 1<<1
+
/* Applications from HID Usage Tables 4/8/99 Version 1.1 */
/* We ignore a few input applications that are not widely used */
#define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001) || (a == 0x000d0002))
@@ -642,6 +647,7 @@
void hid_output_report(struct hid_report *report, __u8 *data);
struct hid_device *hid_allocate_device(void);
int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size);
+int hid_check_keys_pressed(struct hid_device *hid);
int hid_connect(struct hid_device *hid, unsigned int connect_mask);
/**