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* [PATCH] VT binding: Make sticon support bindingAntonino A. Daplas2006-06-26
| | | | | | | | Do not mark sticon_startup() as __init Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] VT binding: Make promcon support bindingAntonino A. Daplas2006-06-26
| | | | | | | | Do not mark promcon_startup() and promcon_init_unimap() as __init Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] VT binding: Make newport_con support bindingAntonino A. Daplas2006-06-26
| | | | | | | | | - move register ioremap from newport_startup() to newport_console_init() - fonts are freed multiple times, do it only once Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] VT binding: Make mdacon support bindingAntonino A. Daplas2006-06-26
| | | | | | | | Do not mark mdacon_startup __init. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] VT binding: Do not create a device file for class device 'fbcon'Antonino A. Daplas2006-06-26
| | | | | | | | | | The class device "fbcon" does not need to be a device file. Do not create one by passing a major and minor number of zero to class_device_create()/destroy(). Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] VT binding: Update fbcon to support bindingAntonino A. Daplas2006-06-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The control for binding/unbinding is moved from fbcon to the console layer. Thus the fbcon sysfs attributes, attach and detach, are also gone. 1. Add a notifier event that tells fbcon if a framebuffer driver has been unregistered. If no registered driver remains, fbcon will unregister itself from the console layer. 2. Replaced calls to give_up_console() with unregister_con_driver(). 3. Still use take_over_console() instead of register_con_driver() to maintain compatibility 4. Respect the parameter first_fb_vc and last_fb_vc instead of using 0 and MAX_NR_CONSOLES - 1. These parameters are settable by the user. 5. When fbcon is completely unbound from the console layer, fbcon will also release (iow, decrement module reference counts to zero) all fbdev drivers. In other words, a bind or unbind request from the console layer will propagate down to the framebuffer drivers. 6. If fbcon is not bound to the console, it will ignore all notifier events (except driver registration and unregistration) and all sysfs requests. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Detaching fbcon: add capability to attach/detach fbconAntonino A. Daplas2006-06-26
| | | | | | | | | | | | | | | | | | | | | | | | Add the ability to detach and attach the framebuffer console to and from the vt layer. This is done by echo'ing any value to sysfs attributes located in class/graphics/fbcon. The two attributes are: attach - bind fbcon to the vt layer detach - unbind fbcon from the vt layer Once fbcon is detached from the vt layer, fbcon can be unloaded if compiled as a module. This feature is quite useful for developers who work on the framebuffer or console subsystem. This is also useful for users who want to go to text mode or graphics mode without having to reboot. Directly unloading the fbcon module is not possible because the vt layer increments the module reference count for all bound consoles. Detaching fbcon decrements the module reference count to zero so unloading becomes possible. Detaching fbcon may interfere with X and/or DRM. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Detaching fbcon: clean up exit codeAntonino A. Daplas2006-06-26
| | | | | | | | | To detach fbcon, it must also clean up all resources it allocated. This was never done before because fbcon cannot be unloaded. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Detaching fbcon: sdd sysfs class device entry for fbconAntonino A. Daplas2006-06-26
| | | | | | | | | | | | | | | | In order for this feature to work, an interface will be needed. The most appropriate is sysfs. However, the framebuffer console has no sysfs entry yet. This will create a sysfs class device entry for fbcon under /sys/class/graphics. Add a class_device entry 'fbcon' under class 'graphics'. Console-specific attributes which where previously under class/graphics/fb[x] are moved to class/graphics/fbcon. These attributes, 'con_rotate' and 'con_rotate_all', are also renamed to 'rotate' and 'rotate_all' respectively. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Detaching fbcon: fix vgacon to allow retaking of the consoleAntonino A. Daplas2006-06-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One of the limitations of the framebuffer console system is its inablity to unload or detach itself from the console layer. And once it loads, it also locks in framebuffer drivers preventing their unload. Although the con2fbmap utility does provide a means to unload individual drivers, it requires that at least one framebuffer driver is loaded for use by fbcon. With this change, it is possible to detach fbcon from the console layer. If it is detached, it will reattach the boot console driver (which is permanently loaded) back to the console layer so the system can continue to work. As a consequence, fbcon will also decrement its reference count of individual framebuffer drivers, allowing all of these drivers to be unloaded even if fbcon is still loaded. Unless you use drivers that restores the display to text mode (rivafb and i810fb, for example), detaching fbcon does require assistance from userspace tools (ie, vbetools) for text mode to be restored completely. Without the help of these tools, fbcon will leave the VGA console corrupted. The methods that can be used will be described in Documentation/fb/fbcon.txt. Because the vt layer also increments the module reference count for each console driver, fbcon cannot be directly unloaded. It must be detached first prior to unload. Similarly, fbcon can be reattached to the console layer without having to reload the module. A nice feature if fbcon is compiled statically. Attaching and detaching fbcon is done via sysfs attributes. A class device entry for fbcon is created in /sys/class/graphics. The two attributes that controls this feature are detach and attach. Two other attributes that are piggybacked under /sys/class/graphics/fb[n] that are fbcon-specific, 'con_rotate' and 'con_rotate_all' are moved to fbcon. They are renamed as 'rotate' and 'rotate_all' respectively. Overall, this feature is a great help for developers working in the framebuffer or console layer. There is not need to continually reboot the kernel for every small change. It is also useful for regular users who wants to choose between a graphical console or a text console without having to reboot. Example usage for x86: /* start in text mode */ modprobe xxxfb modprobe fbcon /* graphical mode with fbcon using xxxfb */ echo 1 > /sys/class/graphics/fbcon/detach /* back to text mode, will produce corrupt display unless vbetool is used */ rmmod xxxfb modprobe yyyfb /* back to graphical mode with fbcon using yyyfb */ Before trying out this feature, please read Documentation/fb/fbcon.txt. This patch: In order for fbcon to detach itself from the console layer, vgacon, which is a boot console driver, must be fixed so it can retake the console multiple times, not just during init. The following needs to be done: - remove __init from the vgacon_startup, this is called again by take_over_console(). - vc->rows and vc->cols are set manually by vgacon during init. After init, vc_resize() can be used - make sure the scrollback_buffer is not reallocated Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] vgacon: make VGA_MAP_MEM take size, remove extra useBjorn Helgaas2006-06-22
| | | | | | | | | | | | | | | | | | | | | VGA_MAP_MEM translates to ioremap() on some architectures. It makes sense to do this to vga_vram_base, because we're going to access memory between vga_vram_base and vga_vram_end. But it doesn't really make sense to map starting at vga_vram_end, because we aren't going to access memory starting there. On ia64, which always has to be different, ioremapping vga_vram_end gives you something completely incompatible with ioremapped vga_vram_start, so vga_vram_size ends up being nonsense. As a bonus, we often know the size up front, so we can use ioremap() correctly, rather than giving it a zero size. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: fix limited scroll in SCROLL_PAN_REDRAW modeMalcom Parsons2006-06-08
| | | | | | | | | | | | | | | | | From: Malcom Parsons <malcolm.parsons@gmail.com> When scrolling up in SCROLL_PAN_REDRAW mode with a large limited scroll region, the bottom few lines have to be redrawn. Without this patch, the wrong text is drawn into these lines, corrupting the display. Observed in 2.6.14 when running an IRC client in the Nintendo DS linux port. I haven't tested if scrolling down has the same problem. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: fix scrollback with logo issue immediately after bootDavid Hollister2006-05-31
| | | | | | | | | | | | | | From: David Hollister <david.hollister@amd.com> After the system boots with the logo, if the first action is a scrollback, the screen may become garbled. This patch ensures that the softback_curr value is updated along with softback_in following the scrollback. Signed-off-by: David Hollister <david.hollister@amd.com> Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Cc: "Antonino A. Daplas" <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: Save current display during initializationAntonino A. Daplas2006-03-31
| | | | | | | | | | The current display was not saved during initialization. This leads to hard to track console corruption, such as a misplaced cursor, which is correctible by switching consoles. Fix this minor bug. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Don't pass boot parameters to argv_init[]OGAWA Hirofumi2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The boot cmdline is parsed in parse_early_param() and parse_args(,unknown_bootoption). And __setup() is used in obsolete_checksetup(). start_kernel() -> parse_args() -> unknown_bootoption() -> obsolete_checksetup() If __setup()'s callback (->setup_func()) returns 1 in obsolete_checksetup(), obsolete_checksetup() thinks a parameter was handled. If ->setup_func() returns 0, obsolete_checksetup() tries other ->setup_func(). If all ->setup_func() that matched a parameter returns 0, a parameter is seted to argv_init[]. Then, when runing /sbin/init or init=app, argv_init[] is passed to the app. If the app doesn't ignore those arguments, it will warning and exit. This patch fixes a wrong usage of it, however fixes obvious one only. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PARISC] Fix stifb with IOREMAP and a 64-bit kernelHelge Deller2006-03-30
| | | | | | | | | | Kill various warnings when built using ioremap. Remove stifb_{read,write} functions, which are now obsolete (and stack abusers!) Disable stifb mmap() functionality on a 64-bit kernel, it will crash the machine. Signed-off-by: Helge Deller <deller@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PATCH] drivers/video: Use ARRAY_SIZE macroTobias Klauser2006-03-27
| | | | | | | | | | | | | Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0]) and remove duplicates of ARRAY_SIZE. Some coding style and trailing whitespaces are also fixed. Compile-tested where possible (some are other arch or BROKEN) Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sparse: Fix warnings in newport driver about non-static functionsRalf Baechle2006-03-27
| | | | | | | | | | There are more sparse warnings but fixing those will require some more work than I want to do without hardware for testing at hand. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] vgacon: Add support for soft scrollbackAntonino A. Daplas2006-03-27
| | | | | | | | | | | | | | | | | The scrollback buffer of the VGA console is located in VGA RAM. This RAM is fixed in size and is very small. To make the scrollback buffer larger, it must be placed instead in System RAM. This patch adds this feature. The feature and the size of the buffer are made as a kernel config option. Besides consuming kernel memory, this feature will slow down the console by approximately 20%. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Jindrich Makovicka <makovick@kmlinux.fjfi.cvut.cz> Cc: Martin Mares <mj@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] vgacon: fix EGA cursor resize functionSamuel Thibault2006-03-27
| | | | | | | | | | | | This corrects cursor resize on ega boards: registers are write-only, so we shouldn't even try to read them. And on ega, 31/30 produces a flat cursor. Using 31/31 is better: except with 32 pixels high fonts, it shouldn't show up. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] vgacon: no vertical resizing on EGASamuel Thibault2006-02-24
| | | | | | | | | | | | | | | | | EGA boards suck: they mostly have write-only registers. This is particularly problematic for the overflow register: for being able to write to it, we would have to handle vertical sync & such too, which (I'd say) would potentially break a lot of configurations. Instead, just disabling vertical resize for EGA boards is just nice enough (horizontal resize still works). Fixes http://bugzilla.kernel.org/show_bug.cgi?id=6106 Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: Rafal Olearski <olearski@mail2.kim.net.pl> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PARISC] Use kzalloc and other janitor-style cleanupsHelge Deller2006-01-22
| | | | | | | | | | | | | | | | Helge, o Convert a bunch of kmalloc/memset uses to kzalloc. o pci.c: Add some __read_mostly annotations. o pci.c: Move constant pci_post_reset_delay to asm/pci.h o grfioctl.h: Add A4450A to comment of CRT_ID_VISUALIZE_EG. o Add some consts to perf.c/perf_images.h Matthew, o sticore.c: Add some consts to suppress compile warnings. Signed-off-by: Helge Deller <deller@parisc-linux.org> Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PATCH] drivers/video/: possible cleanupsAdrian Bunk2006-01-10
| | | | | | | | | | | | | | | | This patch contains the possible cleanups including the following: - every file should #include the headers containing the prototypes for it's global functions - make needlessly global functions static - kyro/STG4000Interface.h: #include video/kyro.h and linux/pci.h instead of a manual "struct pci_dev" - i810_main.{c,h}: prototypes for static functions belong to the C file Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: "Antonino A. Daplas" <adaplas@hotpop.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: Code cleanupsAntonino A. Daplas2006-01-10
| | | | | | | | | | | - replace kmalloc with kzalloc - remove repeated define (FONTCHHCNT) - remove unneeded local variable (redraw) in ypan_{up|down}_redraw - add and delete cursor timer in fbcon_switch() if old_info != info Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: disable ywrap if not supported by fbcon scrolling codeKnut Petersen2006-01-10
| | | | | | | | | | | | | | | | | | | | updatescrollmode() must not select ywrap scrolling if divides(vc->vc_font.height, yres) is not true as this is not supported by the actual ywrap scrolling code. The bug is triggered with e.g. mode 800x600, vxres 1024, vyres 8192, bpp 8, font dimensions 8x16, 8Mb video ram and FBINFO_HWACCEL_YWRAP set. If those conditions are met, scrolling is broken and garbage is permanently displayed at the bottom of the screen. No regression, no possible side effects. Definitely needed by cyblafb and probably needed by amifb. Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de> Acked-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: Store struct display when setting all vcsAntonino A. Daplas2006-01-10
| | | | | | | | | Store struct display when setting all vc's. Otherwise, fbcon's behavior becomes undefined, such as malpositioning of the cursor. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: Sanitize fbconAntonino A. Daplas2006-01-10
| | | | | | | | | Do not pass the structure display since fbcon is already keeping the pointer to the current display. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] vgacon: Workaround for resize bug in some chipsetsAntonino A. Daplas2006-01-08
| | | | | | | | Reported from Redhat Bugzilla Bug 170450 "I updated to the development kernel and now during boot only the top of the text is visable. For example the monitor screen the is the lines and I can only see text in the asterisk area.
* [PATCH] vgacon: fix doublescan modeSamuel Thibault2006-01-08
| | | | | | | | | | | When doublescan mode is in use, scanlines must be doubled. Thanks to Jason Dravet <dravet@hotmail.com> for reporting and testing. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] frv: suppress configuration of certain features for FRVDavid Howells2006-01-08
| | | | | | | | | | | | | | | | | | | Suppress configuration of certain features for the FRV arch as they can't be built for FRV at the moment: (*) RTC (*) HISAX_* (*) PARPORT_PC (*) VGA_CONSOLE (*) BINFMT_ELF Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: donīt call set_par() in fbcon_init() if vc_mode == KD_GRAPHICSKnut Petersen2006-01-07
| | | | | | | | | | | | | | | | Nothing prevents a user to modprobe a framebuffer driver from e.g. the xterm prompt. As a result, the set_par() function of the driver will be called from fbcon_init(). This is fatal as a lot of X / framebuffer combinations are unable to recover from set_par() reprogramming the graphics controller in KD_GRAPHICS mode. It is also unnecessary as the set_par() function will be called during a switch to KD_TEXT anyway. Because of this no side effects are possible. Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SPARC]: introduce a SPARC Kconfig symbolAdrian Bunk2005-12-23
| | | | | | | | | | Introduce a Kconfig symbol SPARC that is defined on both the sparc and sparc64 architectures. This symbol makes some dependencies more readable. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] Fix framebuffer console upside-down ywrap scrollingKnut Petersen2005-12-20
| | | | | | | | | | | | | | | | | | Whenever ywrap scrolling is selected together with 180 degree screen rotation, 2.6.15-rc6 and earlier versions are broken. fb_pan_display() expects non-negative yoffsets, but ud_update_start() calls it with yoffsets down to -(yres - font height). This patch transforms yoffset to the correct range 0 ... vyres-1. Some obviously unneeded parentheses are removed, too. Verified with cyblafb, should be applied before 2.6.15-final because it does fix the framebuffer rotation code introduced early in the 2.6.15 release cycle. Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de> Acked-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbdev: fix switch to KD_TEXT, enhanced versionKnut Petersen2005-12-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Every framebuffer driver relies on the assumption that the set_par() function of the driver is called before drawing functions and other functions dependent on the hardware state are executed. Whenever you switch from X to a framebuffer console for the very first time, there is a chance that a broken X system has _not_ set the mode to KD_GRAPHICS, thus the vt and framebuffer code executes a screen redraw and several other functions before a set_par() is executed. This is believed to be not a bug of linux but a bug of X/xdm. At least some X releases used by SuSE and Debian show this behaviour. There was a 2nd case, but that has been fixed by Antonino Daplas on 10-dec-2005. This patch allows drivers to set a flag to inform fbcon_switch() that they prefer a set_par() call on every console switch, working around the problems caused by the broken X releases. The flag will be used by the next release of cyblafb and might help other drivers that assume a hardware state different to the one used by X. As the default behaviour does not change, this patch should be acceptable to everybody. Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de> Acked-by: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: Avoid illegal display panningAntonino A. Daplas2005-12-13
| | | | | | | | Avoid calls to fb_pan_display when driver is suspended or not in text mode. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: Add ability to save/restore graphics stateAntonino A. Daplas2005-12-13
| | | | | | | | | | | | Add hooks to save and restore the graphics state. These hooks are called in fbcon_blank() when entering/leaving KD_GRAPHICS mode. This is needed by savagefb at least so it can cooperate with savage_dri and by cyblafb. State save/restoration can be full or partial. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: fix complement_mask() with 512 character mapAntonino A. Daplas2005-12-13
| | | | | | | | | There is a bug in the complement_mask when you have a 512-character map. Linux boots to a default 256-character map and most probably your login profile is loading a 512-character map which results in a bad gpm cursor. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Console rotation fixesBenjamin Herrenschmidt2005-11-28
| | | | | | | | | | | Remove bogus usage of test/set_bit() from fbcon rotation code and just manipulate the bits directly. This fixes an oops on powerpc among others and should be faster. Seems to work fine on the G5 here. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] vgacon: Fix usage of stale height value on vc initializationAntonino A. Daplas2005-11-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Reported by: Wayne E. Harlan "[1.] One line summary of the problem: When the kernel option "vga=1" is used, additional tty's (alt+control+Fx with x=2,3,4,5, etc) do not provide the full 50 lines of output. The first one does have 50 lines, however. [2.] Full description of the problem/report: These addtitional tty's show only 39 lines plus the top pixel of the 40-th line. The remaining lines are black and not shown. Kernel version 2.6.13.4 does not show this problem." This bug is caused by using a stale font height value on vgacon_init. Booting with vga=1 gives an 80x50 screen with an 8x8 font. Somewhere during the initialization, the font was changed to 8x9 and the first vc was correctly resized to 80x44. However, the rest of the vc's were not allocated yet, and when they were subsequently initialized, they still used a font height of 8 (instead of 9) causing the mentioned bug. Fix by saving the new font height to vga_video_font_height. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: Console Rotation - Fix wrong shift calculationAntonino A. Daplas2005-11-22
| | | | | | | | | | | | | The shift value (amount to shift the bitmap so first pixel starts at origin(0,0)) is incorrect. This causes corrupted characters or a kernel crash if fontwidth is not divisible by 8 at 270 degrees, or fontheight not divisible by 8 at 180 degrees. Report and part of the fix contributed by Knut Petersen. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbdev: fix module dependency loopAntonino A. Daplas2005-11-13
| | | | | | | | | | | | | | | | | | | | | | | | | | Exporting struct fb_display produces this warning error on depmod: WARNING: Module /lib/modules/2.6.14-mm2/kernel/drivers/video/console/fbcon_ud.ko ignored, due to loop WARNING: Module /lib/modules/2.6.14-mm2/kernel/drivers/video/console/fbcon_rotate.ko ignored, due to loop WARNING: Module /lib/modules/2.6.14-mm2/kernel/drivers/video/console/fbcon_cw.ko ignored, due to loop WARNING: Module /lib/modules/2.6.14-mm2/kernel/drivers/video/console/fbcon_ccw.ko ignored, due to loop WARNING: Module /lib/modules/2.6.14-mm2/kernel/drivers/video/console/fbcon.ko ignored, due to loop WARNING: Loop detected: /lib/modules/2.6.14-mm2/kernel/drivers/video/console/bitblit.ko needs Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Revert "[PATCH] fbcon: Add rl (Roman Large) font"Linus Torvalds2005-11-12
| | | | This reverts 998e6d51162707685336ff99c029c8911b270d32 commit.
* [PATCH] fbcon: Console Rotation - Add ability to control rotation via sysfsAntonino A. Daplas2005-11-09
| | | | | | | | | | | | | | | | | | | | | | Add ability to set rotation via sysfs. The attributes are located in /sys/class/graphics/fb[n] and accepts 0 - unrotated; 1 - clockwise; 2 - upside down; 3 - counterclockwise. The attributes are: con_rotate (r/w) - set rotation of the active console con_rotate_all (w) - set rotation of all consoles rotate (r/w) - set rotation of the framebuffer, if supported. Currently, none of the drivers support this. This is probably temporary, since con_rotate and con_rotate_all are console-specific and has no business being under the fb device. However, until the console layer acquires it's own sysfs class, these attributes will temporarily reside here. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: Console Rotation - Add support for 270-degree rotationAntonino A. Daplas2005-11-09
| | | | | | | | | | | Add support for 270-degree (counterclockwise) rotation of the console. To activate, boot with: fbcon=rotate:3 Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: Console Rotation - Add support for 180-degree console rotationAntonino A. Daplas2005-11-09
| | | | | | | | | | | Add support for 180-degree (upside down) rotation of the console. To activate, boot with: fbcon=rotate:2 Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: Console Rotation - Add support for 90-degree console rotationAntonino A. Daplas2005-11-09
| | | | | | | | | | | Add support for 90-degree (clockwise) rotation of the console. To activate, boot with: fbcon=rotate:1 Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: Console Rotation - Add support to rotate font bitmapAntonino A. Daplas2005-11-09
| | | | | | | | | | | | Add support to rotate the font bitmap. To save on processing time, the entire fontdata will be rotated on a console switch, then stored in a buffer private to fbcon. To further save on processing, the fontdata will only be rotated if the font has changed or if the angle of rotation has changed. Only a single copy of the rotated fontdata will be kept. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: Console Rotation - Add support to rotate the logoAntonino A. Daplas2005-11-09
| | | | | | | | | | Add support for rotating and positioning of the logo. Rotation and position depends on 'int rotate' parameter added to fb_prepare_logo() and fb_show_logo(). Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: Console Rotation - Prepare fbcon for console rotationAntonino A. Daplas2005-11-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch series implements generic code to rotate the console at 90, 180, and 270 degrees. The implementation is completely done in the framebuffer console level, thus no changes to the framebuffer layer or to the drivers are needed. Console rotation is required by some Sharp-based devices where the natural orientation of the display is not at 0 degrees. Also, users that have displays that can pivot will benefit by having a console in portrait mode if they so desire. The choice to implement the code in the console layer rather than in the framebuffer layer is due to the following reasons: - it's fast - it does not require driver changes - it can coexist with devices that can rotate the display at the hardware level - it complements graphics applications that can do display rotation The changes to core fbcon are minimal-- recognition of the console rotation angle so it can swap directions, origins and axes (xres vs yres, xpanstep vs ypanstep, xoffset vs yoffset, etc) and storage of the rotation angle per display. The bulk of the code that does the actual drawing to the screen are placed in separate files. Each angle of rotation has separate methods (bmove, clear, putcs, cursor, update_start which is derived from update_var, and clear_margins). To mimimize processing time, the fontdata are pre-rotated at each console switch (only if the font or the angle has changed). The option can be compiled out (CONFIG_FRAMEBUFFER_CONSOLE_ROTATION = n) if rotation is not needed. Choosing the rotation angle can be done in several ways: 1. boot option fbcon=rotate:n, where n = 0 - normal n = 1 - 90 degrees (clockwise) n = 2 - 180 degrees (upside down) n = 3 - 270 degrees (counterclockwise) 2. echo n > /sys/class/graphics/fb[num]/con_rotate where n is the same as described above. It sets the angle of rotation of the current console 3 echo n > /sys/class/graphics/fb[num]/con_rotate_all where n is the same as described above. Globally sets the angle of rotation. GOTCHAS: The option, especially at angles of 90 and 270 degrees, will exercise the least used code of drivers. Namely, at these angles, panning is done in the x-axis, so it can reveal bugs in the driver if xpanstep is set incorrectly. A workaround is to set xpanstep = 0. Secondly, at these angles, the framebuffer memory access can be unaligned if (fontheight * bpp) % 32 ~= 0 which can reveal bugs in the drivers imageblit, fillrect and copyarea functions. (I think cfbfillrect may have this buglet). A workaround is to use a standard 8x16 font. Speed: The scrolling speed difference between 0 and 180 degrees is minimal, somewhere areound 1-2%. At 90 or 270 degress, speed drops down to a vicinity of 30-40%. This is understandable because the blit direction is across the framebuffer "direction." Scrolling will be helped at these angles if xpanstep is not equal to zero, use of 8x16 fonts, and setting xres_virtual >= xres * 2. Note: The code is tested on little-endian only, so I don't know if it will work in big-endian. Please let me know, it will take only less than a minute of your time. This patch prepares fbcon for console rotation and contains the following changes: - add rotate field in struct fbcon_ops to keep fbcon's current rotation angle - add con_rotate field in struct display to store per-display rotation angle - create a private copy of the current var to fbcon. This will prevent fbcon from directly manipulating info->var, especially the fields xoffset, yoffset and vmode. - add ability to swap pertinent axes (xres, yres; xpanstep, ypanstep; etc) depending on the rotation angle - change global update_var() (function that sets the screen start address) as an fbcon method update_start. This is required because the axes, start offset, and/or direction can be reversed depending on the rotation angle. - add fbcon method rotate_font() which will rotate each character bitmap to the correct angle of rotation. - add fbcon boot option 'rotate' to select the angle of rotation at bootime. Currently does nothing until all patches are applied. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fbcon: Add rl (Roman Large) fontZach Smith2005-11-07
| | | | | | | | | | | | I converted the "rl" console font from the kbd utility to be a built-in font for the framebuffer console, and I was wondering if you would be OK with including it. I've generated a font_rl.c file and related minor modifications. I find it's the most visually appealing of the kbd fonts which is why I use it and selected it for conversion. I believe the font is GPL'd. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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