The patch titled
tridentfb: y-panning fixes
has been added to the -mm tree. Its filename is
tridentfb-y-panning-fixes.patch
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------------------------------------------------------
Subject: tridentfb: y-panning fixes
From: Krzysztof Helt <krzysztof.h1@xxxxx>
The Trident cards uses only 20-bit address of screen start in double
words. This allows addressing for only 4MB of video memory so check this.
Also remove some redundant checks and assignments.
Signed-off-by: Krzysztof Helt <krzysztof.h1@xxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/video/tridentfb.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff -puN drivers/video/tridentfb.c~tridentfb-y-panning-fixes drivers/video/tridentfb.c
--- a/drivers/video/tridentfb.c~tridentfb-y-panning-fixes
+++ a/drivers/video/tridentfb.c
@@ -870,8 +870,10 @@ static int tridentfb_check_var(struct fb
line_length = var->xres_virtual * bpp / 8;
}
- if (var->yres > var->yres_virtual)
- var->yres_virtual = var->yres;
+ /* datasheet specifies how to set panning only up to 4 MB */
+ if (line_length * (var->yres_virtual - var->yres) > (4 << 20))
+ var->yres_virtual = ((4 << 20) / line_length) + var->yres;
+
if (line_length * var->yres_virtual > info->fix.smem_len)
return -EINVAL;
@@ -944,8 +946,6 @@ static int tridentfb_pan_display(struct
debug("enter\n");
offset = (var->xoffset + (var->yoffset * var->xres_virtual))
* var->bits_per_pixel / 32;
- info->var.xoffset = var->xoffset;
- info->var.yoffset = var->yoffset;
set_screen_start(par, offset);
debug("exit\n");
return 0;
@@ -1225,7 +1225,6 @@ static int tridentfb_setcolreg(unsigned
((blue & 0xFF00) >> 8);
}
-/* debug("exit\n"); */
return 0;
}
_
Patches currently in -mm which might be from krzysztof.h1@xxxxx are
modedb-fix-incorrect-sync-and-vmode-flags-for-cvt-modes.patch
fbcon-fix-wrong-vmode-bits-copied-on-console-switch.patch
tridentfb-replace-macros-with-functions.patch
tridentfb-convert-fb_info-into-allocated-one.patch
tridentfb-move-global-pseudo-palette-into-structure.patch
tridentfb-move-global-chip_id-into-structure.patch
tridentfb-move-global-flat-panel-variable-into-structure.patch
tridentfb-convert-is_blade-and-is_xp-macros-into-functions.patch
tridentfb-move-global-acceleration-hooks-into-structure.patch
tridentfb-make-use-of-functions-and-constants-from-the-vgah.patch
tridentfb-fix-timing-calculations.patch
tridentfb-use-mmio-access-for-clock-setting.patch
tridentfb-fix-clock-settings-for-older-trident-96xx-chips.patch
tridentfb-improve-probe-function.patch
tridentfb-improved-register-values-on-tgui-9680.patch
tridentfb-add-tgui-9440-support.patch
tridentfb-fix-unitialized-pseudo_palette.patch
tridentfb-improve-check_var-function.patch
tridentfb-preserve-memory-type-settings.patch
tridentfb-fix-hi-color-modes-for-tgui-9440.patch
tridentfb-add-acceleration-for-tgui-families.patch
tridentfb-acceleration-code-improvements.patch
tridentfb-acceleration-bug-fixes.patch
tridentfb-various-pixclock-and-timing-improvements.patch
tridentfb-acceleration-constants-change.patch
tridentfb-source-code-improvements.patch
tridentfb-fix-console-freeze-when-switching-from-x11.patch
tridentfb-fix-224-color-logo-at-8-bpp.patch
tridentfb-y-panning-fixes.patch
amifb-test-virtual-screen-range-before-subtraction-on-unsigned.patch
atafb-test-virtual-screen-range-before-subtraction-on-unsigned.patch
fbcon-make-logo_height-a-local-variable.patch
uvesafb-change-mode-parameter-to-mode_option.patch
tridentfb-documentation-update.patch
tdfxfb-add-mode_option-module-parameter.patch
vga16fb-source-code-improvement.patch
tdfxfb-remove-ypan-checks-done-by-a-higher-layer.patch
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