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path: root/drivers/video/fbmon.c
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2009-07-22fbmon: work around compiler bug in gcc-2.4.2Linus Torvalds
There's some odd bug in gcc-4.2 where it miscompiles a simple loop whent he loop counter is of type 'unsigned char' and it should count to 128. The compiler will incorrectly decide that a trivial loop like this: unsigned char i, ... for (i = 0; i < 128; i++) { .. is endless, and will compile it to a single instruction that just branches to itself. This was triggered by the addition of '-fno-strict-overflow', and we could play games with compiler versions and go back to '-fwrapv' instead, but the trivial way to avoid it is to just make the loop induction variable be an 'int' instead. Thanks to Krzysztof Oledzki for reporting and testing and to Troy Moure for digging through assembler differences and finding it. Reported-and-tested-by: Krzysztof Oledzki <olel@ans.pl> Found-by: Troy Moure <twmoure@szypr.net> Gcc-bug-acked-by: Ian Lance Taylor <iant@google.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-16fbmon: fix EDID parser to detect interlace modesJon Dufresne
The current EDID parser in the linux kernel ignores interlace modes. The patch looks for the edid interlace flag and adjusts the vertical resolution if it is found. Signed-off-by: Jon Dufresne <jon.dufresne@gmail.com> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24fbdev: width and height are unsignedVille Syrjala
The width and height members of fb_var_screeninfo are __u32. The code initializes them to -1 which seems wrong, and 0 seems like an equally good default value. Signed-off-by: Ville Syrjala <syrjala@sci.fi> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06fbmon: cleanup trailing whitespacesAndre Haupt
[akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Andre Haupt <andre@bitwigglers.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06fbmon: remove unnecessary local variableAndre Haupt
This fixes a sparse warning about symbol 'i' shadowing an earlier one. Signed-off-by: Andre Haupt <andre@bitwigglers.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16fbdev: fb_create_modedb() non-static `int first = 1;'Geert Uytterhoeven
Looking at the code flow, `int first' in fb_create_modedb() should be static. [adaplas] Better for 'int first' to be moved outside the loop. [akpm@linux-foundation.org: kill stray semicolon] Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Antonino Daplas <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08fbdev: add Ultrasharp UXGA to broken monitor databaseAntonino A. Daplas
This particular monitor does not have a limits block and has only one set of monitor timings. Fix by adding a limits block to the EDID and extend the horizontal sync frequency range to 30 kHz and 75 Khz. Signed-off-by: Antonino Daplas <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2006-12-08[PATCH] various fbdev files: mark structs and array read-onlyHelge Deller
- move some structs and arrays to the read-only (.rodata) section [akpm@osdl.org: build fix] Signed-off-by: Helge Deller <deller@gmx.de> Acked-by: James Simmons <jsimmons@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-10[PATCH] vt: Remove VT-specific declarations and definitions from tty.hJon Smirl
MAX_NR_CONSOLES, fg_console, want_console and last_console are more of a function of the VT layer than the TTY one. Moving these to vt.h and vt_kern.h allows all of the framebuffer and VT console drivers to remove their dependency on tty.h. [akpm@osdl.org: fix alpha build] Signed-off-by: Jon Smirl <jonsmir@gmail.com> Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] fbdev: Firmware EDID fixesAntonino A. Daplas
- make firmware edid independent from framebuffer (No need to choose framebuffer just to disable this option - enable this option in X86_64 - check if VBE/DDC function is implemented before calling actual function Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] fbdev: More accurate sync range extrapolationAntonino A. Daplas
The EDID block should specify the display's operating limits (vertical and horizontal sync ranges, and maximum dot clock). If not given by the EDID block, the ranges are extrapolated from the modelist. However, the computation used is only a rough approximation, and the resulting values may not reflect the actual capability of the display. This problem is frequently encountered when the EDID block has a single entry, the single mode entry will fail validation. To prevent this, calculate the values based on the same method used in fb_validate_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>
2006-06-26[PATCH] fbdev: Remove duplicate #include'sAdrian Bunk
Remove unneeded duplicate #include's of the same header file. In the case of fbmon.c linux/pci.h is now #include'd unconditional, but this should be safe. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27[PATCH] fbdev: Make BIOS EDID reading configurableAntonino A. Daplas
DDC reading via the Video BIOS may take several tens of seconds with some combination of display cards and monitors. Make this option configurable. It defaults to `y' to minimise disruption. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10[PATCH] fbdev: Replace kmalloc with kzallocAntonino A. Daplas
Replace kmalloc with kzalloc Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10[PATCH] fbdev: Reduce stack usageAntonino A. Daplas
calc_mode_timings() and fb_get_mode() are using more than 500 bytes off the stack. Fix. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07[PATCH] fbdev: Rearrange mode database entriesAntonino A. Daplas
Rearrange mode database entries such that preferred timings are entered first, and less preferred timings are entered last. (Detailed, VESA, established/standard). Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07[PATCH] fbdev: Workaround for buggy EDID blocksAntonino A. Daplas
Some EDID blocks set the flag "prefer first detailed timing" without providing any detailed timing at all. Clear this flag if the block does not provide detailed timings. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09[PATCH] fbdev: Initialize var structure in calc_mode_timingsAntonino A. Daplas
The var structure in calc_mode_timings is not properly initialized (zero set) which leads to undefined behavior when it is passed to fb_get_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>
2005-09-09[PATCH] fbdev: Resurrect hooks to get EDID from firmwareAntonino A. Daplas
For the i386, code is already present in video.S that gets the EDID from the video BIOS. Make this visible so drivers can also use this data as fallback when i2c does not work. To ensure that the EDID block is returned for the primary graphics adapter only, by check if the IORESOURCE_ROM_SHADOW flag is set. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-27[PATCH] fbmon: horizontal frequency rounding fixJon Smirl
Fix rounding error when mode frequency is very close to monitor limit Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Acked-by: James Simmons <jsimmons@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01[PATCH] fbdev: edid.h cleanupsAdrian Bunk
This patch removes some completely unused code. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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