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Merge branch 'fbdev/udlfb'

This commit is contained in:
Paul Mundt 2011-01-06 18:10:09 +09:00
parent 17ca20cb7d 81f6f3c104
commit ca9c20ce2b
9 changed files with 64 additions and 126 deletions
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0
drivers/staging/udlfb/udlfb.txt → Documentation/fb/udlfb.txt
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2
drivers/staging/Kconfig
View File

@ -111,8 +111,6 @@ source "drivers/staging/vt6655/Kconfig"
source "drivers/staging/vt6656/Kconfig"
source "drivers/staging/udlfb/Kconfig"
source "drivers/staging/hv/Kconfig"
source "drivers/staging/vme/Kconfig"

1
drivers/staging/Makefile
View File

@ -38,7 +38,6 @@ obj-$(CONFIG_USB_SERIAL_QUATECH_USB2) += quatech_usb2/
obj-$(CONFIG_OCTEON_ETHERNET) += octeon/
obj-$(CONFIG_VT6655) += vt6655/
obj-$(CONFIG_VT6656) += vt6656/
obj-$(CONFIG_FB_UDL) += udlfb/
obj-$(CONFIG_HYPERV) += hv/
obj-$(CONFIG_VME_BUS) += vme/
obj-$(CONFIG_MRST_RAR_HANDLER) += memrar/

14
drivers/staging/udlfb/Kconfig
View File

@ -1,14 +0,0 @@
config FB_UDL
tristate "Displaylink USB Framebuffer support"
depends on FB && USB
select FB_MODE_HELPERS
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
---help---
This is a kernel framebuffer driver for DisplayLink USB devices.
Supports fbdev clients like xf86-video-fbdev, kdrive, fbi, and
mplayer -vo fbdev. Supports all USB 2.0 era DisplayLink devices.
To compile as a module, choose M here: the module name is udlfb.

1
drivers/staging/udlfb/Makefile
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@ -1 +0,0 @@
obj-$(CONFIG_FB_UDL) += udlfb.o

14
drivers/video/Kconfig
View File

@ -2116,6 +2116,20 @@ config FB_SM501
If unsure, say N.
config FB_UDL
tristate "Displaylink USB Framebuffer support"
depends on FB && USB
select FB_MODE_HELPERS
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
---help---
This is a kernel framebuffer driver for DisplayLink USB devices.
Supports fbdev clients like xf86-video-fbdev, kdrive, fbi, and
mplayer -vo fbdev. Supports all USB 2.0 era DisplayLink devices.
To compile as a module, choose M here: the module name is udlfb.
config FB_PNX4008_DUM
tristate "Display Update Module support on Philips PNX4008 board"

1
drivers/video/Makefile
View File

@ -125,6 +125,7 @@ obj-$(CONFIG_FB_PNX4008_DUM_RGB) += pnx4008/
obj-$(CONFIG_FB_IBM_GXT4500) += gxt4500.o
obj-$(CONFIG_FB_PS3) += ps3fb.o
obj-$(CONFIG_FB_SM501) += sm501fb.o
obj-$(CONFIG_FB_UDL) += udlfb.o
obj-$(CONFIG_FB_XILINX) += xilinxfb.o
obj-$(CONFIG_SH_MIPI_DSI) += sh_mipi_dsi.o
obj-$(CONFIG_FB_SH_MOBILE_HDMI) += sh_mobile_hdmi.o

135
drivers/staging/udlfb/udlfb.c → drivers/video/udlfb.c
View File

@ -16,6 +16,8 @@
* from Florian Echtler, Henrik Bjerregaard Pedersen, and others.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
@ -26,8 +28,8 @@
#include <linux/vmalloc.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include "udlfb.h"
#include <video/udlfb.h>
#include "edid.h"
static struct fb_fix_screeninfo dlfb_fix = {
.id = "udlfb",
@ -40,9 +42,7 @@ static struct fb_fix_screeninfo dlfb_fix = {
};
static const u32 udlfb_info_flags = FBINFO_DEFAULT | FBINFO_READS_FAST |
#ifdef FBINFO_VIRTFB
FBINFO_VIRTFB |
#endif
FBINFO_HWACCEL_IMAGEBLIT | FBINFO_HWACCEL_FILLRECT |
FBINFO_HWACCEL_COPYAREA | FBINFO_MISC_ALWAYS_SETPAR;
@ -293,7 +293,7 @@ static int dlfb_ops_mmap(struct fb_info *info, struct vm_area_struct *vma)
pos = (unsigned long)info->fix.smem_start + offset;
dl_notice("mmap() framebuffer addr:%lu size:%lu\n",
pr_notice("mmap() framebuffer addr:%lu size:%lu\n",
pos, size);
while (size > 0) {
@ -595,18 +595,6 @@ int dlfb_handle_damage(struct dlfb_data *dev, int x, int y,
return 0;
}
static ssize_t dlfb_ops_read(struct fb_info *info, char __user *buf,
size_t count, loff_t *ppos)
{
ssize_t result = -ENOSYS;
#if defined CONFIG_FB_SYS_FOPS || defined CONFIG_FB_SYS_FOPS_MODULE
result = fb_sys_read(info, buf, count, ppos);
#endif
return result;
}
/*
* Path triggered by usermode clients who write to filesystem
* e.g. cat filename > /dev/fb1
@ -616,12 +604,10 @@ static ssize_t dlfb_ops_read(struct fb_info *info, char __user *buf,
static ssize_t dlfb_ops_write(struct fb_info *info, const char __user *buf,
size_t count, loff_t *ppos)
{
ssize_t result = -ENOSYS;
ssize_t result;
struct dlfb_data *dev = info->par;
u32 offset = (u32) *ppos;
#if defined CONFIG_FB_SYS_FOPS || defined CONFIG_FB_SYS_FOPS_MODULE
result = fb_sys_write(info, buf, count, ppos);
if (result > 0) {
@ -632,7 +618,6 @@ static ssize_t dlfb_ops_write(struct fb_info *info, const char __user *buf,
dlfb_handle_damage(dev, 0, start, info->var.xres,
lines, info->screen_base);
}
#endif
return result;
}
@ -644,14 +629,10 @@ static void dlfb_ops_copyarea(struct fb_info *info,
struct dlfb_data *dev = info->par;
#if defined CONFIG_FB_SYS_COPYAREA || defined CONFIG_FB_SYS_COPYAREA_MODULE
sys_copyarea(info, area);
dlfb_handle_damage(dev, area->dx, area->dy,
area->width, area->height, info->screen_base);
#endif
}
static void dlfb_ops_imageblit(struct fb_info *info,
@ -659,15 +640,10 @@ static void dlfb_ops_imageblit(struct fb_info *info,
{
struct dlfb_data *dev = info->par;
#if defined CONFIG_FB_SYS_IMAGEBLIT || defined CONFIG_FB_SYS_IMAGEBLIT_MODULE
sys_imageblit(info, image);
dlfb_handle_damage(dev, image->dx, image->dy,
image->width, image->height, info->screen_base);
#endif
}
static void dlfb_ops_fillrect(struct fb_info *info,
@ -675,17 +651,12 @@ static void dlfb_ops_fillrect(struct fb_info *info,
{
struct dlfb_data *dev = info->par;
#if defined CONFIG_FB_SYS_FILLRECT || defined CONFIG_FB_SYS_FILLRECT_MODULE
sys_fillrect(info, rect);
dlfb_handle_damage(dev, rect->dx, rect->dy, rect->width,
rect->height, info->screen_base);
#endif
}
#ifdef CONFIG_FB_DEFERRED_IO
/*
* NOTE: fb_defio.c is holding info->fbdefio.mutex
* Touching ANY framebuffer memory that triggers a page fault
@ -747,8 +718,6 @@ static void dlfb_dpy_deferred_io(struct fb_info *info,
&dev->cpu_kcycles_used);
}
#endif
static int dlfb_get_edid(struct dlfb_data *dev, char *edid, int len)
{
int i;
@ -765,7 +734,7 @@ static int dlfb_get_edid(struct dlfb_data *dev, char *edid, int len)
(0x80 | (0x02 << 5)), i << 8, 0xA1, rbuf, 2,
HZ);
if (ret < 1) {
dl_err("Read EDID byte %d failed err %x\n", i, ret);
pr_err("Read EDID byte %d failed err %x\n", i, ret);
i--;
break;
}
@ -881,7 +850,6 @@ static int dlfb_ops_open(struct fb_info *info, int user)
kref_get(&dev->kref);
#ifdef CONFIG_FB_DEFERRED_IO
if (fb_defio && (info->fbdefio == NULL)) {
/* enable defio at last moment if not disabled by client */
@ -897,9 +865,8 @@ static int dlfb_ops_open(struct fb_info *info, int user)
info->fbdefio = fbdefio;
fb_deferred_io_init(info);
}
#endif
dl_notice("open /dev/fb%d user=%d fb_info=%p count=%d\n",
pr_notice("open /dev/fb%d user=%d fb_info=%p count=%d\n",
info->node, user, info, dev->fb_count);
return 0;
@ -923,7 +890,7 @@ static void dlfb_free(struct kref *kref)
kfree(dev->edid);
dl_warn("freeing dlfb_data %p\n", dev);
pr_warn("freeing dlfb_data %p\n", dev);
kfree(dev);
}
@ -959,7 +926,7 @@ static void dlfb_free_framebuffer_work(struct work_struct *work)
/* Assume info structure is freed after this point */
framebuffer_release(info);
dl_warn("fb_info for /dev/fb%d has been freed\n", node);
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);
@ -978,16 +945,14 @@ static int dlfb_ops_release(struct fb_info *info, int user)
if (dev->virtualized && (dev->fb_count == 0))
schedule_delayed_work(&dev->free_framebuffer_work, HZ);
#ifdef CONFIG_FB_DEFERRED_IO
if ((dev->fb_count == 0) && (info->fbdefio)) {
fb_deferred_io_cleanup(info);
kfree(info->fbdefio);
info->fbdefio = NULL;
info->fbops->fb_mmap = dlfb_ops_mmap;
}
#endif
dl_warn("released /dev/fb%d user=%d count=%d\n",
pr_warn("released /dev/fb%d user=%d count=%d\n",
info->node, user, dev->fb_count);
kref_put(&dev->kref, dlfb_free);
@ -1005,12 +970,12 @@ static int dlfb_is_valid_mode(struct fb_videomode *mode,
struct dlfb_data *dev = info->par;
if (mode->xres * mode->yres > dev->sku_pixel_limit) {
dl_warn("%dx%d beyond chip capabilities\n",
pr_warn("%dx%d beyond chip capabilities\n",
mode->xres, mode->yres);
return 0;
}
dl_info("%dx%d valid mode\n", mode->xres, mode->yres);
pr_info("%dx%d valid mode\n", mode->xres, mode->yres);
return 1;
}
@ -1054,7 +1019,7 @@ static int dlfb_ops_set_par(struct fb_info *info)
u16 *pix_framebuffer;
int i;
dl_notice("set_par mode %dx%d\n", info->var.xres, info->var.yres);
pr_notice("set_par mode %dx%d\n", info->var.xres, info->var.yres);
result = dlfb_set_video_mode(dev, &info->var);
@ -1104,7 +1069,7 @@ static int dlfb_ops_blank(int blank_mode, struct fb_info *info)
static struct fb_ops dlfb_ops = {
.owner = THIS_MODULE,
.fb_read = dlfb_ops_read,
.fb_read = fb_sys_read,
.fb_write = dlfb_ops_write,
.fb_setcolreg = dlfb_ops_setcolreg,
.fb_fillrect = dlfb_ops_fillrect,
@ -1133,7 +1098,7 @@ static int dlfb_realloc_framebuffer(struct dlfb_data *dev, struct fb_info *info)
unsigned char *new_fb;
unsigned char *new_back;
dl_warn("Reallocating framebuffer. Addresses will change!\n");
pr_warn("Reallocating framebuffer. Addresses will change!\n");
new_len = info->fix.line_length * info->var.yres;
@ -1143,7 +1108,7 @@ static int dlfb_realloc_framebuffer(struct dlfb_data *dev, struct fb_info *info)
*/
new_fb = vmalloc(new_len);
if (!new_fb) {
dl_err("Virtual framebuffer alloc failed\n");
pr_err("Virtual framebuffer alloc failed\n");
goto error;
}
@ -1165,7 +1130,7 @@ static int dlfb_realloc_framebuffer(struct dlfb_data *dev, struct fb_info *info)
*/
new_back = vmalloc(new_len);
if (!new_back)
dl_info("No shadow/backing buffer allcoated\n");
pr_info("No shadow/backing buffer allcoated\n");
else {
if (dev->backing_buffer)
vfree(dev->backing_buffer);
@ -1207,7 +1172,7 @@ static int dlfb_setup_modes(struct dlfb_data *dev,
if (info->dev) /* only use mutex if info has been registered */
mutex_lock(&info->lock);
edid = kmalloc(MAX_EDID_SIZE, GFP_KERNEL);
edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
if (!edid) {
result = -ENOMEM;
goto error;
@ -1223,9 +1188,9 @@ static int dlfb_setup_modes(struct dlfb_data *dev,
*/
while (tries--) {
i = dlfb_get_edid(dev, edid, MAX_EDID_SIZE);
i = dlfb_get_edid(dev, edid, EDID_LENGTH);
if (i >= MIN_EDID_SIZE)
if (i >= EDID_LENGTH)
fb_edid_to_monspecs(edid, &info->monspecs);
if (info->monspecs.modedb_len > 0) {
@ -1238,24 +1203,24 @@ static int dlfb_setup_modes(struct dlfb_data *dev,
/* If that fails, use a previously returned EDID if available */
if (info->monspecs.modedb_len == 0) {
dl_err("Unable to get valid EDID from device/display\n");
pr_err("Unable to get valid EDID from device/display\n");
if (dev->edid) {
fb_edid_to_monspecs(dev->edid, &info->monspecs);
if (info->monspecs.modedb_len > 0)
dl_err("Using previously queried EDID\n");
pr_err("Using previously queried EDID\n");
}
}
/* If that fails, use the default EDID we were handed */
if (info->monspecs.modedb_len == 0) {
if (default_edid_size >= MIN_EDID_SIZE) {
if (default_edid_size >= EDID_LENGTH) {
fb_edid_to_monspecs(default_edid, &info->monspecs);
if (info->monspecs.modedb_len > 0) {
memcpy(edid, default_edid, default_edid_size);
dev->edid = edid;
dev->edid_size = default_edid_size;
dl_err("Using default/backup EDID\n");
pr_err("Using default/backup EDID\n");
}
}
}
@ -1381,7 +1346,7 @@ static ssize_t edid_show(
if (off + count > dev->edid_size)
count = dev->edid_size - off;
dl_info("sysfs edid copy %p to %p, %d bytes\n",
pr_info("sysfs edid copy %p to %p, %d bytes\n",
dev->edid, buf, (int) count);
memcpy(buf, dev->edid, count);
@ -1398,15 +1363,13 @@ static ssize_t edid_store(
struct dlfb_data *dev = fb_info->par;
/* We only support write of entire EDID at once, no offset*/
if ((src_size < MIN_EDID_SIZE) ||
(src_size > MAX_EDID_SIZE) ||
(src_off != 0))
if ((src_size != EDID_LENGTH) || (src_off != 0))
return 0;
dlfb_setup_modes(dev, fb_info, src, src_size);
if (dev->edid && (memcmp(src, dev->edid, src_size) == 0)) {
dl_info("sysfs written EDID is new default\n");
pr_info("sysfs written EDID is new default\n");
dlfb_ops_set_par(fb_info);
return src_size;
} else
@ -1431,7 +1394,7 @@ static ssize_t metrics_reset_store(struct device *fbdev,
static struct bin_attribute edid_attr = {
.attr.name = "edid",
.attr.mode = 0666,
.size = MAX_EDID_SIZE,
.size = EDID_LENGTH,
.read = edid_show,
.write = edid_store
};
@ -1479,7 +1442,7 @@ static int dlfb_parse_vendor_descriptor(struct dlfb_data *dev,
total_len = usb_get_descriptor(usbdev, 0x5f, /* vendor specific */
0, desc, MAX_VENDOR_DESCRIPTOR_SIZE);
if (total_len > 5) {
dl_info("vendor descriptor length:%x data:%02x %02x %02x %02x" \
pr_info("vendor descriptor length:%x data:%02x %02x %02x %02x" \
"%02x %02x %02x %02x %02x %02x %02x\n",
total_len, desc[0],
desc[1], desc[2], desc[3], desc[4], desc[5], desc[6],
@ -1508,7 +1471,7 @@ static int dlfb_parse_vendor_descriptor(struct dlfb_data *dev,
case 0x0200: { /* max_area */
u32 max_area;
max_area = le32_to_cpu(*((u32 *)desc));
dl_warn("DL chip limited to %d pixel modes\n",
pr_warn("DL chip limited to %d pixel modes\n",
max_area);
dev->sku_pixel_limit = max_area;
break;
@ -1524,7 +1487,7 @@ static int dlfb_parse_vendor_descriptor(struct dlfb_data *dev,
unrecognized:
/* allow udlfb to load for now even if firmware unrecognized */
dl_err("Unrecognized vendor firmware descriptor\n");
pr_err("Unrecognized vendor firmware descriptor\n");
success:
kfree(buf);
@ -1557,24 +1520,24 @@ static int dlfb_usb_probe(struct usb_interface *interface,
dev->gdev = &usbdev->dev; /* our generic struct device * */
usb_set_intfdata(interface, dev);
dl_info("%s %s - serial #%s\n",
pr_info("%s %s - serial #%s\n",
usbdev->manufacturer, usbdev->product, usbdev->serial);
dl_info("vid_%04x&pid_%04x&rev_%04x driver's dlfb_data struct at %p\n",
pr_info("vid_%04x&pid_%04x&rev_%04x driver's dlfb_data struct at %p\n",
usbdev->descriptor.idVendor, usbdev->descriptor.idProduct,
usbdev->descriptor.bcdDevice, dev);
dl_info("console enable=%d\n", console);
dl_info("fb_defio enable=%d\n", fb_defio);
pr_info("console enable=%d\n", console);
pr_info("fb_defio enable=%d\n", fb_defio);
dev->sku_pixel_limit = 2048 * 1152; /* default to maximum */
if (!dlfb_parse_vendor_descriptor(dev, usbdev)) {
dl_err("firmware not recognized. Assume incompatible device\n");
pr_err("firmware not recognized. Assume incompatible device\n");
goto error;
}
if (!dlfb_alloc_urb_list(dev, WRITES_IN_FLIGHT, MAX_TRANSFER)) {
retval = -ENOMEM;
dl_err("dlfb_alloc_urb_list failed\n");
pr_err("dlfb_alloc_urb_list failed\n");
goto error;
}
@ -1584,7 +1547,7 @@ static int dlfb_usb_probe(struct usb_interface *interface,
info = framebuffer_alloc(0, &usbdev->dev);
if (!info) {
retval = -ENOMEM;
dl_err("framebuffer_alloc failed\n");
pr_err("framebuffer_alloc failed\n");
goto error;
}
@ -1595,7 +1558,7 @@ static int dlfb_usb_probe(struct usb_interface *interface,
retval = fb_alloc_cmap(&info->cmap, 256, 0);
if (retval < 0) {
dl_err("fb_alloc_cmap failed %x\n", retval);
pr_err("fb_alloc_cmap failed %x\n", retval);
goto error;
}
@ -1606,7 +1569,7 @@ static int dlfb_usb_probe(struct usb_interface *interface,
retval = dlfb_setup_modes(dev, info, NULL, 0);
if (retval != 0) {
dl_err("unable to find common mode for display and adapter\n");
pr_err("unable to find common mode for display and adapter\n");
goto error;
}
@ -1620,7 +1583,7 @@ static int dlfb_usb_probe(struct usb_interface *interface,
retval = register_framebuffer(info);
if (retval < 0) {
dl_err("register_framebuffer failed %d\n", retval);
pr_err("register_framebuffer failed %d\n", retval);
goto error;
}
@ -1629,7 +1592,7 @@ static int dlfb_usb_probe(struct usb_interface *interface,
device_create_bin_file(info->dev, &edid_attr);
dl_info("DisplayLink USB device /dev/fb%d attached. %dx%d resolution."
pr_info("DisplayLink USB device /dev/fb%d attached. %dx%d resolution."
" Using %dK framebuffer memory\n", info->node,
info->var.xres, info->var.yres,
((dev->backing_buffer) ?
@ -1673,7 +1636,7 @@ static void dlfb_usb_disconnect(struct usb_interface *interface)
dev = usb_get_intfdata(interface);
info = dev->info;
dl_info("USB disconnect starting\n");
pr_info("USB disconnect starting\n");
/* we virtualize until all fb clients release. Then we free */
dev->virtualized = true;
@ -1737,7 +1700,7 @@ static void dlfb_urb_completion(struct urb *urb)
if (!(urb->status == -ENOENT ||
urb->status == -ECONNRESET ||
urb->status == -ESHUTDOWN)) {
dl_err("%s - nonzero write bulk status received: %d\n",
pr_err("%s - nonzero write bulk status received: %d\n",
__func__, urb->status);
atomic_set(&dev->lost_pixels, 1);
}
@ -1769,7 +1732,7 @@ static void dlfb_free_urb_list(struct dlfb_data *dev)
int ret;
unsigned long flags;
dl_notice("Waiting for completes and freeing all render urbs\n");
pr_notice("Waiting for completes and freeing all render urbs\n");
/* keep waiting and freeing, until we've got 'em all */
while (count--) {
@ -1848,7 +1811,7 @@ static int dlfb_alloc_urb_list(struct dlfb_data *dev, int count, size_t size)
dev->urbs.count = i;
dev->urbs.available = i;
dl_notice("allocated %d %d byte urbs\n", i, (int) size);
pr_notice("allocated %d %d byte urbs\n", i, (int) size);
return i;
}
@ -1865,7 +1828,7 @@ static struct urb *dlfb_get_urb(struct dlfb_data *dev)
ret = down_timeout(&dev->urbs.limit_sem, GET_URB_TIMEOUT);
if (ret) {
atomic_set(&dev->lost_pixels, 1);
dl_warn("wait for urb interrupted: %x available: %d\n",
pr_warn("wait for urb interrupted: %x available: %d\n",
ret, dev->urbs.available);
goto error;
}
@ -1897,7 +1860,7 @@ static int dlfb_submit_urb(struct dlfb_data *dev, struct urb *urb, size_t len)
if (ret) {
dlfb_urb_completion(urb); /* because no one else will */
atomic_set(&dev->lost_pixels, 1);
dl_err("usb_submit_urb error %x\n", ret);
pr_err("usb_submit_urb error %x\n", ret);
}
return ret;
}

22
drivers/staging/udlfb/udlfb.h → include/video/udlfb.h
View File

@ -65,9 +65,6 @@ struct dlfb_data {
#define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE)
#define WRITES_IN_FLIGHT (4)
#define MIN_EDID_SIZE 128
#define MAX_EDID_SIZE 128
#define MAX_VENDOR_DESCRIPTOR_SIZE 256
#define GET_URB_TIMEOUT HZ
@ -95,23 +92,4 @@ struct dlfb_data {
#define DL_ALIGN_UP(x, a) ALIGN(x, a)
#define DL_ALIGN_DOWN(x, a) ALIGN(x-(a-1), a)
/* remove once this gets added to sysfs.h */
#define __ATTR_RW(attr) __ATTR(attr, 0644, attr##_show, attr##_store)
/*
* udlfb is both a usb device, and a framebuffer device.
* They may exist at the same time, but during various stages
* inactivity, teardown, or "virtual" operation, only one or the
* other will exist (one will outlive the other). So we can't
* call the dev_*() macros, because we don't have a stable dev object.
*/
#define dl_err(format, arg...) \
pr_err("udlfb: " format, ## arg)
#define dl_warn(format, arg...) \
pr_warning("udlfb: " format, ## arg)
#define dl_notice(format, arg...) \
pr_notice("udlfb: " format, ## arg)
#define dl_info(format, arg...) \
pr_info("udlfb: " format, ## arg)
#endif