static bool console = 1; /* Allow fbcon to open framebuffer */
static bool fb_defio = 1; /* Detect mmap writes using page faults */
static bool shadow = 1; /* Optionally disable shadow framebuffer */
+static int pixel_limit; /* Optionally force a pixel resolution limit */
/* dlfb keeps a list of urbs for efficient bulk transfers */
static void dlfb_urb_completion(struct urb *urb);
{
struct dlfb_data *dev = container_of(kref, struct dlfb_data, kref);
- /* this function will wait for all in-flight urbs to complete */
- if (dev->urbs.count > 0)
- dlfb_free_urb_list(dev);
-
if (dev->backing_buffer)
vfree(dev->backing_buffer);
up(&unode->dev->urbs.limit_sem);
}
-static void dlfb_free_framebuffer_work(struct work_struct *work)
+static void dlfb_free_framebuffer(struct dlfb_data *dev)
{
- struct dlfb_data *dev = container_of(work, struct dlfb_data,
- free_framebuffer_work.work);
struct fb_info *info = dev->info;
- int node = info->node;
- unregister_framebuffer(info);
+ if (info) {
+ int node = info->node;
- if (info->cmap.len != 0)
- fb_dealloc_cmap(&info->cmap);
- if (info->monspecs.modedb)
- fb_destroy_modedb(info->monspecs.modedb);
- if (info->screen_base)
- vfree(info->screen_base);
+ unregister_framebuffer(info);
- fb_destroy_modelist(&info->modelist);
+ if (info->cmap.len != 0)
+ fb_dealloc_cmap(&info->cmap);
+ if (info->monspecs.modedb)
+ fb_destroy_modedb(info->monspecs.modedb);
+ if (info->screen_base)
+ vfree(info->screen_base);
- dev->info = 0;
+ fb_destroy_modelist(&info->modelist);
- /* Assume info structure is freed after this point */
- framebuffer_release(info);
+ dev->info = NULL;
- pr_warn("fb_info for /dev/fb%d has been freed\n", node);
+ /* Assume info structure is freed after this point */
+ framebuffer_release(info);
+
+ pr_warn("fb_info for /dev/fb%d has been freed\n", node);
+ }
/* ref taken in probe() as part of registering framebfufer */
kref_put(&dev->kref, dlfb_free);
}
+static void dlfb_free_framebuffer_work(struct work_struct *work)
+{
+ struct dlfb_data *dev = container_of(work, struct dlfb_data,
+ free_framebuffer_work.work);
+ dlfb_free_framebuffer(dev);
+}
/*
* Assumes caller is holding info->lock mutex (for open and release at least)
*/
return 0;
}
- pr_info("%dx%d valid mode\n", mode->xres, mode->yres);
+ pr_info("%dx%d @ %d Hz valid mode\n", mode->xres, mode->yres,
+ mode->refresh);
return 1;
}
u8 length;
u16 key;
- key = *((u16 *) desc);
+ key = le16_to_cpu(*((u16 *) desc));
desc += sizeof(u16);
length = *desc;
desc++;
kfree(buf);
return true;
}
+
+static void dlfb_init_framebuffer_work(struct work_struct *work);
+
static int dlfb_usb_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
struct usb_device *usbdev;
struct dlfb_data *dev = 0;
- struct fb_info *info = 0;
int retval = -ENOMEM;
- int i;
/* usb initialization */
goto error;
}
- /* we need to wait for both usb and fbdev to spin down on disconnect */
kref_init(&dev->kref); /* matching kref_put in usb .disconnect fn */
- kref_get(&dev->kref); /* matching kref_put in free_framebuffer_work */
dev->udev = usbdev;
dev->gdev = &usbdev->dev; /* our generic struct device * */
goto error;
}
+ if (pixel_limit) {
+ pr_warn("DL chip limit of %d overriden"
+ " by module param to %d\n",
+ dev->sku_pixel_limit, pixel_limit);
+ dev->sku_pixel_limit = pixel_limit;
+ }
+
+
if (!dlfb_alloc_urb_list(dev, WRITES_IN_FLIGHT, MAX_TRANSFER)) {
retval = -ENOMEM;
pr_err("dlfb_alloc_urb_list failed\n");
goto error;
}
+ kref_get(&dev->kref); /* matching kref_put in free_framebuffer_work */
+
/* We don't register a new USB class. Our client interface is fbdev */
+ /* Workitem keep things fast & simple during USB enumeration */
+ INIT_DELAYED_WORK(&dev->init_framebuffer_work,
+ dlfb_init_framebuffer_work);
+ schedule_delayed_work(&dev->init_framebuffer_work, 0);
+
+ return 0;
+
+error:
+ if (dev) {
+
+ kref_put(&dev->kref, dlfb_free); /* ref for framebuffer */
+ kref_put(&dev->kref, dlfb_free); /* last ref from kref_init */
+
+ /* dev has been deallocated. Do not dereference */
+ }
+
+ return retval;
+}
+
+static void dlfb_init_framebuffer_work(struct work_struct *work)
+{
+ struct dlfb_data *dev = container_of(work, struct dlfb_data,
+ init_framebuffer_work.work);
+ struct fb_info *info;
+ int retval;
+ int i;
+
/* allocates framebuffer driver structure, not framebuffer memory */
- info = framebuffer_alloc(0, &interface->dev);
+ info = framebuffer_alloc(0, dev->gdev);
if (!info) {
retval = -ENOMEM;
pr_err("framebuffer_alloc failed\n");
for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++) {
retval = device_create_file(info->dev, &fb_device_attrs[i]);
if (retval) {
- pr_err("device_create_file failed %d\n", retval);
- goto err_del_attrs;
+ pr_warn("device_create_file failed %d\n", retval);
}
}
retval = device_create_bin_file(info->dev, &edid_attr);
if (retval) {
- pr_err("device_create_bin_file failed %d\n", retval);
- goto err_del_attrs;
+ pr_warn("device_create_bin_file failed %d\n", retval);
}
pr_info("DisplayLink USB device /dev/fb%d attached. %dx%d resolution."
info->var.xres, info->var.yres,
((dev->backing_buffer) ?
info->fix.smem_len * 2 : info->fix.smem_len) >> 10);
- return 0;
-
-err_del_attrs:
- for (i -= 1; i >= 0; i--)
- device_remove_file(info->dev, &fb_device_attrs[i]);
+ return;
error:
- if (dev) {
-
- if (info) {
- if (info->cmap.len != 0)
- fb_dealloc_cmap(&info->cmap);
- if (info->monspecs.modedb)
- fb_destroy_modedb(info->monspecs.modedb);
- if (info->screen_base)
- vfree(info->screen_base);
-
- fb_destroy_modelist(&info->modelist);
-
- framebuffer_release(info);
- }
-
- if (dev->backing_buffer)
- vfree(dev->backing_buffer);
-
- kref_put(&dev->kref, dlfb_free); /* ref for framebuffer */
- kref_put(&dev->kref, dlfb_free); /* last ref from kref_init */
-
- /* dev has been deallocated. Do not dereference */
- }
-
- return retval;
+ dlfb_free_framebuffer(dev);
}
static void dlfb_usb_disconnect(struct usb_interface *interface)
/* When non-active we'll update virtual framebuffer, but no new urbs */
atomic_set(&dev->usb_active, 0);
- /* remove udlfb's sysfs interfaces */
- for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++)
- device_remove_file(info->dev, &fb_device_attrs[i]);
- device_remove_bin_file(info->dev, &edid_attr);
+ /* this function will wait for all in-flight urbs to complete */
+ dlfb_free_urb_list(dev);
+
+ if (info) {
+
+ /* remove udlfb's sysfs interfaces */
+ for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++)
+ device_remove_file(info->dev, &fb_device_attrs[i]);
+ device_remove_bin_file(info->dev, &edid_attr);
+
+ /* it's safe to uncomment next line if your kernel
+ doesn't yet have this function exported */
+ unlink_framebuffer(info);
+ }
usb_set_intfdata(interface, NULL);
+ dev->udev = NULL;
+ dev->gdev = NULL;
/* if clients still have us open, will be freed on last close */
if (dev->fb_count == 0)
int ret;
unsigned long flags;
- pr_notice("Waiting for completes and freeing all render urbs\n");
+ pr_notice("Freeing all render urbs\n");
/* keep waiting and freeing, until we've got 'em all */
while (count--) {
- /* Getting interrupted means a leak, but ok at shutdown*/
+ /* Getting interrupted means a leak, but ok at disconnect */
ret = down_interruptible(&dev->urbs.limit_sem);
if (ret)
break;
kfree(node);
}
+ dev->urbs.count = 0;
}
static int dlfb_alloc_urb_list(struct dlfb_data *dev, int count, size_t size)
module_param(shadow, bool, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP);
MODULE_PARM_DESC(shadow, "Shadow vid mem. Disable to save mem but lose perf");
+module_param(pixel_limit, int, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP);
+MODULE_PARM_DESC(pixel_limit, "Force limit on max mode (in x*y pixels)");
+
MODULE_AUTHOR("Roberto De Ioris <roberto@unbit.it>, "
"Jaya Kumar <jayakumar.lkml@gmail.com>, "
"Bernie Thompson <bernie@plugable.com>");
projects / firefly-linux-kernel-4.4.55.git / blobdiff