From: Dmitry Torokhov Date: Thu, 17 Mar 2011 05:56:03 +0000 (-0700) Subject: Input: xen-kbdfront - move to drivers/input/misc X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=49851ca04c7f941ef6f5ca04751b0e0fefe9d50d;p=openwrt%2Fstaging%2Fblogic.git Input: xen-kbdfront - move to drivers/input/misc drivers/input is reserved for input core code and input handlers with drivers belonging to one of the sub-directories. Signed-off-by: Dmitry Torokhov --- diff --git a/drivers/input/Kconfig b/drivers/input/Kconfig index 1903c0f5b925..23e82e46656d 100644 --- a/drivers/input/Kconfig +++ b/drivers/input/Kconfig @@ -161,16 +161,6 @@ config INPUT_APMPOWER To compile this driver as a module, choose M here: the module will be called apm-power. -config XEN_KBDDEV_FRONTEND - tristate "Xen virtual keyboard and mouse support" - depends on XEN_FBDEV_FRONTEND - default y - select XEN_XENBUS_FRONTEND - help - This driver implements the front-end of the Xen virtual - keyboard and mouse device driver. It communicates with a back-end - in another domain. - comment "Input Device Drivers" source "drivers/input/keyboard/Kconfig" diff --git a/drivers/input/Makefile b/drivers/input/Makefile index 09614ce74961..0c789490e0b3 100644 --- a/drivers/input/Makefile +++ b/drivers/input/Makefile @@ -24,5 +24,3 @@ obj-$(CONFIG_INPUT_TOUCHSCREEN) += touchscreen/ obj-$(CONFIG_INPUT_MISC) += misc/ obj-$(CONFIG_INPUT_APMPOWER) += apm-power.o - -obj-$(CONFIG_XEN_KBDDEV_FRONTEND) += xen-kbdfront.o diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index b0c6772851a9..f9cf0881b0e3 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -454,4 +454,17 @@ config INPUT_CMA3000_I2C To compile this driver as a module, choose M here: the module will be called cma3000_d0x_i2c. +config INPUT_XEN_KBDDEV_FRONTEND + tristate "Xen virtual keyboard and mouse support" + depends on XEN_FBDEV_FRONTEND + default y + select XEN_XENBUS_FRONTEND + help + This driver implements the front-end of the Xen virtual + keyboard and mouse device driver. It communicates with a back-end + in another domain. + + To compile this driver as a module, choose M here: the + module will be called xen-kbdfront. + endif diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 9b4797112c9a..e3f7984e6274 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -42,5 +42,6 @@ obj-$(CONFIG_INPUT_TWL4030_VIBRA) += twl4030-vibra.o obj-$(CONFIG_INPUT_UINPUT) += uinput.o obj-$(CONFIG_INPUT_WISTRON_BTNS) += wistron_btns.o obj-$(CONFIG_INPUT_WM831X_ON) += wm831x-on.o +obj-$(CONFIG_INPUT_XEN_KBDDEV_FRONTEND) += xen-kbdfront.o obj-$(CONFIG_INPUT_YEALINK) += yealink.o diff --git a/drivers/input/misc/xen-kbdfront.c b/drivers/input/misc/xen-kbdfront.c new file mode 100644 index 000000000000..7077f9bf5ead --- /dev/null +++ b/drivers/input/misc/xen-kbdfront.c @@ -0,0 +1,385 @@ +/* + * Xen para-virtual input device + * + * Copyright (C) 2005 Anthony Liguori + * Copyright (C) 2006-2008 Red Hat, Inc., Markus Armbruster + * + * Based on linux/drivers/input/mouse/sermouse.c + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include + +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +struct xenkbd_info { + struct input_dev *kbd; + struct input_dev *ptr; + struct xenkbd_page *page; + int gref; + int irq; + struct xenbus_device *xbdev; + char phys[32]; +}; + +static int xenkbd_remove(struct xenbus_device *); +static int xenkbd_connect_backend(struct xenbus_device *, struct xenkbd_info *); +static void xenkbd_disconnect_backend(struct xenkbd_info *); + +/* + * Note: if you need to send out events, see xenfb_do_update() for how + * to do that. + */ + +static irqreturn_t input_handler(int rq, void *dev_id) +{ + struct xenkbd_info *info = dev_id; + struct xenkbd_page *page = info->page; + __u32 cons, prod; + + prod = page->in_prod; + if (prod == page->in_cons) + return IRQ_HANDLED; + rmb(); /* ensure we see ring contents up to prod */ + for (cons = page->in_cons; cons != prod; cons++) { + union xenkbd_in_event *event; + struct input_dev *dev; + event = &XENKBD_IN_RING_REF(page, cons); + + dev = info->ptr; + switch (event->type) { + case XENKBD_TYPE_MOTION: + input_report_rel(dev, REL_X, event->motion.rel_x); + input_report_rel(dev, REL_Y, event->motion.rel_y); + if (event->motion.rel_z) + input_report_rel(dev, REL_WHEEL, + -event->motion.rel_z); + break; + case XENKBD_TYPE_KEY: + dev = NULL; + if (test_bit(event->key.keycode, info->kbd->keybit)) + dev = info->kbd; + if (test_bit(event->key.keycode, info->ptr->keybit)) + dev = info->ptr; + if (dev) + input_report_key(dev, event->key.keycode, + event->key.pressed); + else + pr_warning("unhandled keycode 0x%x\n", + event->key.keycode); + break; + case XENKBD_TYPE_POS: + input_report_abs(dev, ABS_X, event->pos.abs_x); + input_report_abs(dev, ABS_Y, event->pos.abs_y); + if (event->pos.rel_z) + input_report_rel(dev, REL_WHEEL, + -event->pos.rel_z); + break; + } + if (dev) + input_sync(dev); + } + mb(); /* ensure we got ring contents */ + page->in_cons = cons; + notify_remote_via_irq(info->irq); + + return IRQ_HANDLED; +} + +static int __devinit xenkbd_probe(struct xenbus_device *dev, + const struct xenbus_device_id *id) +{ + int ret, i, abs; + struct xenkbd_info *info; + struct input_dev *kbd, *ptr; + + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) { + xenbus_dev_fatal(dev, -ENOMEM, "allocating info structure"); + return -ENOMEM; + } + dev_set_drvdata(&dev->dev, info); + info->xbdev = dev; + info->irq = -1; + info->gref = -1; + snprintf(info->phys, sizeof(info->phys), "xenbus/%s", dev->nodename); + + info->page = (void *)__get_free_page(GFP_KERNEL | __GFP_ZERO); + if (!info->page) + goto error_nomem; + + if (xenbus_scanf(XBT_NIL, dev->otherend, "feature-abs-pointer", "%d", &abs) < 0) + abs = 0; + if (abs) + xenbus_printf(XBT_NIL, dev->nodename, "request-abs-pointer", "1"); + + /* keyboard */ + kbd = input_allocate_device(); + if (!kbd) + goto error_nomem; + kbd->name = "Xen Virtual Keyboard"; + kbd->phys = info->phys; + kbd->id.bustype = BUS_PCI; + kbd->id.vendor = 0x5853; + kbd->id.product = 0xffff; + + __set_bit(EV_KEY, kbd->evbit); + for (i = KEY_ESC; i < KEY_UNKNOWN; i++) + __set_bit(i, kbd->keybit); + for (i = KEY_OK; i < KEY_MAX; i++) + __set_bit(i, kbd->keybit); + + ret = input_register_device(kbd); + if (ret) { + input_free_device(kbd); + xenbus_dev_fatal(dev, ret, "input_register_device(kbd)"); + goto error; + } + info->kbd = kbd; + + /* pointing device */ + ptr = input_allocate_device(); + if (!ptr) + goto error_nomem; + ptr->name = "Xen Virtual Pointer"; + ptr->phys = info->phys; + ptr->id.bustype = BUS_PCI; + ptr->id.vendor = 0x5853; + ptr->id.product = 0xfffe; + + if (abs) { + __set_bit(EV_ABS, ptr->evbit); + input_set_abs_params(ptr, ABS_X, 0, XENFB_WIDTH, 0, 0); + input_set_abs_params(ptr, ABS_Y, 0, XENFB_HEIGHT, 0, 0); + } else { + input_set_capability(ptr, EV_REL, REL_X); + input_set_capability(ptr, EV_REL, REL_Y); + } + input_set_capability(ptr, EV_REL, REL_WHEEL); + + __set_bit(EV_KEY, ptr->evbit); + for (i = BTN_LEFT; i <= BTN_TASK; i++) + __set_bit(i, ptr->keybit); + + ret = input_register_device(ptr); + if (ret) { + input_free_device(ptr); + xenbus_dev_fatal(dev, ret, "input_register_device(ptr)"); + goto error; + } + info->ptr = ptr; + + ret = xenkbd_connect_backend(dev, info); + if (ret < 0) + goto error; + + return 0; + + error_nomem: + ret = -ENOMEM; + xenbus_dev_fatal(dev, ret, "allocating device memory"); + error: + xenkbd_remove(dev); + return ret; +} + +static int xenkbd_resume(struct xenbus_device *dev) +{ + struct xenkbd_info *info = dev_get_drvdata(&dev->dev); + + xenkbd_disconnect_backend(info); + memset(info->page, 0, PAGE_SIZE); + return xenkbd_connect_backend(dev, info); +} + +static int xenkbd_remove(struct xenbus_device *dev) +{ + struct xenkbd_info *info = dev_get_drvdata(&dev->dev); + + xenkbd_disconnect_backend(info); + if (info->kbd) + input_unregister_device(info->kbd); + if (info->ptr) + input_unregister_device(info->ptr); + free_page((unsigned long)info->page); + kfree(info); + return 0; +} + +static int xenkbd_connect_backend(struct xenbus_device *dev, + struct xenkbd_info *info) +{ + int ret, evtchn; + struct xenbus_transaction xbt; + + ret = gnttab_grant_foreign_access(dev->otherend_id, + virt_to_mfn(info->page), 0); + if (ret < 0) + return ret; + info->gref = ret; + + ret = xenbus_alloc_evtchn(dev, &evtchn); + if (ret) + goto error_grant; + ret = bind_evtchn_to_irqhandler(evtchn, input_handler, + 0, dev->devicetype, info); + if (ret < 0) { + xenbus_dev_fatal(dev, ret, "bind_evtchn_to_irqhandler"); + goto error_evtchan; + } + info->irq = ret; + + again: + ret = xenbus_transaction_start(&xbt); + if (ret) { + xenbus_dev_fatal(dev, ret, "starting transaction"); + goto error_irqh; + } + ret = xenbus_printf(xbt, dev->nodename, "page-ref", "%lu", + virt_to_mfn(info->page)); + if (ret) + goto error_xenbus; + ret = xenbus_printf(xbt, dev->nodename, "page-gref", "%u", info->gref); + if (ret) + goto error_xenbus; + ret = xenbus_printf(xbt, dev->nodename, "event-channel", "%u", + evtchn); + if (ret) + goto error_xenbus; + ret = xenbus_transaction_end(xbt, 0); + if (ret) { + if (ret == -EAGAIN) + goto again; + xenbus_dev_fatal(dev, ret, "completing transaction"); + goto error_irqh; + } + + xenbus_switch_state(dev, XenbusStateInitialised); + return 0; + + error_xenbus: + xenbus_transaction_end(xbt, 1); + xenbus_dev_fatal(dev, ret, "writing xenstore"); + error_irqh: + unbind_from_irqhandler(info->irq, info); + info->irq = -1; + error_evtchan: + xenbus_free_evtchn(dev, evtchn); + error_grant: + gnttab_end_foreign_access_ref(info->gref, 0); + info->gref = -1; + return ret; +} + +static void xenkbd_disconnect_backend(struct xenkbd_info *info) +{ + if (info->irq >= 0) + unbind_from_irqhandler(info->irq, info); + info->irq = -1; + if (info->gref >= 0) + gnttab_end_foreign_access_ref(info->gref, 0); + info->gref = -1; +} + +static void xenkbd_backend_changed(struct xenbus_device *dev, + enum xenbus_state backend_state) +{ + struct xenkbd_info *info = dev_get_drvdata(&dev->dev); + int val; + + switch (backend_state) { + case XenbusStateInitialising: + case XenbusStateInitialised: + case XenbusStateReconfiguring: + case XenbusStateReconfigured: + case XenbusStateUnknown: + case XenbusStateClosed: + break; + + case XenbusStateInitWait: +InitWait: + xenbus_switch_state(dev, XenbusStateConnected); + break; + + case XenbusStateConnected: + /* + * Work around xenbus race condition: If backend goes + * through InitWait to Connected fast enough, we can + * get Connected twice here. + */ + if (dev->state != XenbusStateConnected) + goto InitWait; /* no InitWait seen yet, fudge it */ + + /* Set input abs params to match backend screen res */ + if (xenbus_scanf(XBT_NIL, info->xbdev->otherend, + "width", "%d", &val) > 0) + input_set_abs_params(info->ptr, ABS_X, 0, val, 0, 0); + + if (xenbus_scanf(XBT_NIL, info->xbdev->otherend, + "height", "%d", &val) > 0) + input_set_abs_params(info->ptr, ABS_Y, 0, val, 0, 0); + + break; + + case XenbusStateClosing: + xenbus_frontend_closed(dev); + break; + } +} + +static const struct xenbus_device_id xenkbd_ids[] = { + { "vkbd" }, + { "" } +}; + +static struct xenbus_driver xenkbd_driver = { + .name = "vkbd", + .owner = THIS_MODULE, + .ids = xenkbd_ids, + .probe = xenkbd_probe, + .remove = xenkbd_remove, + .resume = xenkbd_resume, + .otherend_changed = xenkbd_backend_changed, +}; + +static int __init xenkbd_init(void) +{ + if (!xen_pv_domain()) + return -ENODEV; + + /* Nothing to do if running in dom0. */ + if (xen_initial_domain()) + return -ENODEV; + + return xenbus_register_frontend(&xenkbd_driver); +} + +static void __exit xenkbd_cleanup(void) +{ + xenbus_unregister_driver(&xenkbd_driver); +} + +module_init(xenkbd_init); +module_exit(xenkbd_cleanup); + +MODULE_DESCRIPTION("Xen virtual keyboard/pointer device frontend"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("xen:vkbd"); diff --git a/drivers/input/xen-kbdfront.c b/drivers/input/xen-kbdfront.c deleted file mode 100644 index 7077f9bf5ead..000000000000 --- a/drivers/input/xen-kbdfront.c +++ /dev/null @@ -1,385 +0,0 @@ -/* - * Xen para-virtual input device - * - * Copyright (C) 2005 Anthony Liguori - * Copyright (C) 2006-2008 Red Hat, Inc., Markus Armbruster - * - * Based on linux/drivers/input/mouse/sermouse.c - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive for - * more details. - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include -#include -#include -#include -#include - -#include - -#include -#include -#include -#include -#include -#include -#include -#include - -struct xenkbd_info { - struct input_dev *kbd; - struct input_dev *ptr; - struct xenkbd_page *page; - int gref; - int irq; - struct xenbus_device *xbdev; - char phys[32]; -}; - -static int xenkbd_remove(struct xenbus_device *); -static int xenkbd_connect_backend(struct xenbus_device *, struct xenkbd_info *); -static void xenkbd_disconnect_backend(struct xenkbd_info *); - -/* - * Note: if you need to send out events, see xenfb_do_update() for how - * to do that. - */ - -static irqreturn_t input_handler(int rq, void *dev_id) -{ - struct xenkbd_info *info = dev_id; - struct xenkbd_page *page = info->page; - __u32 cons, prod; - - prod = page->in_prod; - if (prod == page->in_cons) - return IRQ_HANDLED; - rmb(); /* ensure we see ring contents up to prod */ - for (cons = page->in_cons; cons != prod; cons++) { - union xenkbd_in_event *event; - struct input_dev *dev; - event = &XENKBD_IN_RING_REF(page, cons); - - dev = info->ptr; - switch (event->type) { - case XENKBD_TYPE_MOTION: - input_report_rel(dev, REL_X, event->motion.rel_x); - input_report_rel(dev, REL_Y, event->motion.rel_y); - if (event->motion.rel_z) - input_report_rel(dev, REL_WHEEL, - -event->motion.rel_z); - break; - case XENKBD_TYPE_KEY: - dev = NULL; - if (test_bit(event->key.keycode, info->kbd->keybit)) - dev = info->kbd; - if (test_bit(event->key.keycode, info->ptr->keybit)) - dev = info->ptr; - if (dev) - input_report_key(dev, event->key.keycode, - event->key.pressed); - else - pr_warning("unhandled keycode 0x%x\n", - event->key.keycode); - break; - case XENKBD_TYPE_POS: - input_report_abs(dev, ABS_X, event->pos.abs_x); - input_report_abs(dev, ABS_Y, event->pos.abs_y); - if (event->pos.rel_z) - input_report_rel(dev, REL_WHEEL, - -event->pos.rel_z); - break; - } - if (dev) - input_sync(dev); - } - mb(); /* ensure we got ring contents */ - page->in_cons = cons; - notify_remote_via_irq(info->irq); - - return IRQ_HANDLED; -} - -static int __devinit xenkbd_probe(struct xenbus_device *dev, - const struct xenbus_device_id *id) -{ - int ret, i, abs; - struct xenkbd_info *info; - struct input_dev *kbd, *ptr; - - info = kzalloc(sizeof(*info), GFP_KERNEL); - if (!info) { - xenbus_dev_fatal(dev, -ENOMEM, "allocating info structure"); - return -ENOMEM; - } - dev_set_drvdata(&dev->dev, info); - info->xbdev = dev; - info->irq = -1; - info->gref = -1; - snprintf(info->phys, sizeof(info->phys), "xenbus/%s", dev->nodename); - - info->page = (void *)__get_free_page(GFP_KERNEL | __GFP_ZERO); - if (!info->page) - goto error_nomem; - - if (xenbus_scanf(XBT_NIL, dev->otherend, "feature-abs-pointer", "%d", &abs) < 0) - abs = 0; - if (abs) - xenbus_printf(XBT_NIL, dev->nodename, "request-abs-pointer", "1"); - - /* keyboard */ - kbd = input_allocate_device(); - if (!kbd) - goto error_nomem; - kbd->name = "Xen Virtual Keyboard"; - kbd->phys = info->phys; - kbd->id.bustype = BUS_PCI; - kbd->id.vendor = 0x5853; - kbd->id.product = 0xffff; - - __set_bit(EV_KEY, kbd->evbit); - for (i = KEY_ESC; i < KEY_UNKNOWN; i++) - __set_bit(i, kbd->keybit); - for (i = KEY_OK; i < KEY_MAX; i++) - __set_bit(i, kbd->keybit); - - ret = input_register_device(kbd); - if (ret) { - input_free_device(kbd); - xenbus_dev_fatal(dev, ret, "input_register_device(kbd)"); - goto error; - } - info->kbd = kbd; - - /* pointing device */ - ptr = input_allocate_device(); - if (!ptr) - goto error_nomem; - ptr->name = "Xen Virtual Pointer"; - ptr->phys = info->phys; - ptr->id.bustype = BUS_PCI; - ptr->id.vendor = 0x5853; - ptr->id.product = 0xfffe; - - if (abs) { - __set_bit(EV_ABS, ptr->evbit); - input_set_abs_params(ptr, ABS_X, 0, XENFB_WIDTH, 0, 0); - input_set_abs_params(ptr, ABS_Y, 0, XENFB_HEIGHT, 0, 0); - } else { - input_set_capability(ptr, EV_REL, REL_X); - input_set_capability(ptr, EV_REL, REL_Y); - } - input_set_capability(ptr, EV_REL, REL_WHEEL); - - __set_bit(EV_KEY, ptr->evbit); - for (i = BTN_LEFT; i <= BTN_TASK; i++) - __set_bit(i, ptr->keybit); - - ret = input_register_device(ptr); - if (ret) { - input_free_device(ptr); - xenbus_dev_fatal(dev, ret, "input_register_device(ptr)"); - goto error; - } - info->ptr = ptr; - - ret = xenkbd_connect_backend(dev, info); - if (ret < 0) - goto error; - - return 0; - - error_nomem: - ret = -ENOMEM; - xenbus_dev_fatal(dev, ret, "allocating device memory"); - error: - xenkbd_remove(dev); - return ret; -} - -static int xenkbd_resume(struct xenbus_device *dev) -{ - struct xenkbd_info *info = dev_get_drvdata(&dev->dev); - - xenkbd_disconnect_backend(info); - memset(info->page, 0, PAGE_SIZE); - return xenkbd_connect_backend(dev, info); -} - -static int xenkbd_remove(struct xenbus_device *dev) -{ - struct xenkbd_info *info = dev_get_drvdata(&dev->dev); - - xenkbd_disconnect_backend(info); - if (info->kbd) - input_unregister_device(info->kbd); - if (info->ptr) - input_unregister_device(info->ptr); - free_page((unsigned long)info->page); - kfree(info); - return 0; -} - -static int xenkbd_connect_backend(struct xenbus_device *dev, - struct xenkbd_info *info) -{ - int ret, evtchn; - struct xenbus_transaction xbt; - - ret = gnttab_grant_foreign_access(dev->otherend_id, - virt_to_mfn(info->page), 0); - if (ret < 0) - return ret; - info->gref = ret; - - ret = xenbus_alloc_evtchn(dev, &evtchn); - if (ret) - goto error_grant; - ret = bind_evtchn_to_irqhandler(evtchn, input_handler, - 0, dev->devicetype, info); - if (ret < 0) { - xenbus_dev_fatal(dev, ret, "bind_evtchn_to_irqhandler"); - goto error_evtchan; - } - info->irq = ret; - - again: - ret = xenbus_transaction_start(&xbt); - if (ret) { - xenbus_dev_fatal(dev, ret, "starting transaction"); - goto error_irqh; - } - ret = xenbus_printf(xbt, dev->nodename, "page-ref", "%lu", - virt_to_mfn(info->page)); - if (ret) - goto error_xenbus; - ret = xenbus_printf(xbt, dev->nodename, "page-gref", "%u", info->gref); - if (ret) - goto error_xenbus; - ret = xenbus_printf(xbt, dev->nodename, "event-channel", "%u", - evtchn); - if (ret) - goto error_xenbus; - ret = xenbus_transaction_end(xbt, 0); - if (ret) { - if (ret == -EAGAIN) - goto again; - xenbus_dev_fatal(dev, ret, "completing transaction"); - goto error_irqh; - } - - xenbus_switch_state(dev, XenbusStateInitialised); - return 0; - - error_xenbus: - xenbus_transaction_end(xbt, 1); - xenbus_dev_fatal(dev, ret, "writing xenstore"); - error_irqh: - unbind_from_irqhandler(info->irq, info); - info->irq = -1; - error_evtchan: - xenbus_free_evtchn(dev, evtchn); - error_grant: - gnttab_end_foreign_access_ref(info->gref, 0); - info->gref = -1; - return ret; -} - -static void xenkbd_disconnect_backend(struct xenkbd_info *info) -{ - if (info->irq >= 0) - unbind_from_irqhandler(info->irq, info); - info->irq = -1; - if (info->gref >= 0) - gnttab_end_foreign_access_ref(info->gref, 0); - info->gref = -1; -} - -static void xenkbd_backend_changed(struct xenbus_device *dev, - enum xenbus_state backend_state) -{ - struct xenkbd_info *info = dev_get_drvdata(&dev->dev); - int val; - - switch (backend_state) { - case XenbusStateInitialising: - case XenbusStateInitialised: - case XenbusStateReconfiguring: - case XenbusStateReconfigured: - case XenbusStateUnknown: - case XenbusStateClosed: - break; - - case XenbusStateInitWait: -InitWait: - xenbus_switch_state(dev, XenbusStateConnected); - break; - - case XenbusStateConnected: - /* - * Work around xenbus race condition: If backend goes - * through InitWait to Connected fast enough, we can - * get Connected twice here. - */ - if (dev->state != XenbusStateConnected) - goto InitWait; /* no InitWait seen yet, fudge it */ - - /* Set input abs params to match backend screen res */ - if (xenbus_scanf(XBT_NIL, info->xbdev->otherend, - "width", "%d", &val) > 0) - input_set_abs_params(info->ptr, ABS_X, 0, val, 0, 0); - - if (xenbus_scanf(XBT_NIL, info->xbdev->otherend, - "height", "%d", &val) > 0) - input_set_abs_params(info->ptr, ABS_Y, 0, val, 0, 0); - - break; - - case XenbusStateClosing: - xenbus_frontend_closed(dev); - break; - } -} - -static const struct xenbus_device_id xenkbd_ids[] = { - { "vkbd" }, - { "" } -}; - -static struct xenbus_driver xenkbd_driver = { - .name = "vkbd", - .owner = THIS_MODULE, - .ids = xenkbd_ids, - .probe = xenkbd_probe, - .remove = xenkbd_remove, - .resume = xenkbd_resume, - .otherend_changed = xenkbd_backend_changed, -}; - -static int __init xenkbd_init(void) -{ - if (!xen_pv_domain()) - return -ENODEV; - - /* Nothing to do if running in dom0. */ - if (xen_initial_domain()) - return -ENODEV; - - return xenbus_register_frontend(&xenkbd_driver); -} - -static void __exit xenkbd_cleanup(void) -{ - xenbus_unregister_driver(&xenkbd_driver); -} - -module_init(xenkbd_init); -module_exit(xenkbd_cleanup); - -MODULE_DESCRIPTION("Xen virtual keyboard/pointer device frontend"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("xen:vkbd");