The patch titled
cirrusfb: simplify clock calculation
has been added to the -mm tree. Its filename is
cirrusfb-simplify-clock-calculation.patch
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------------------------------------------------------
Subject: cirrusfb: simplify clock calculation
From: Krzysztof Helt <krzysztof.h1@xxxxx>
Simplify clock calculation.
Signed-off-by: Krzysztof Helt <krzysztof.h1@xxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/video/cirrusfb.c | 40 +++++++++++++++++--------------------
1 file changed, 19 insertions(+), 21 deletions(-)
diff -puN drivers/video/cirrusfb.c~cirrusfb-simplify-clock-calculation drivers/video/cirrusfb.c
--- a/drivers/video/cirrusfb.c~cirrusfb-simplify-clock-calculation
+++ a/drivers/video/cirrusfb.c
@@ -3075,38 +3075,36 @@ static void bestclock(long freq, long *b
f = freq * 10;
for (n = 32; n < 128; n++) {
+ int s = 0;
+
d = (143181 * n) / f;
if ((d >= 7) && (d <= 63)) {
- if (d > 31)
- d = (d / 2) * 2;
- h = (14318 * n) / d;
+ int temp = d;
+
+ if (temp > 31) {
+ s = 1;
+ temp >>= 1;
+ }
+ h = ((14318 * n) / temp) >> s;
if (abs(h - freq) < abs(*best - freq)) {
*best = h;
*nom = n;
- if (d < 32) {
- *den = d;
- *div = 0;
- } else {
- *den = d / 2;
- *div = 1;
- }
+ *den = temp;
+ *div = s;
}
}
- d = DIV_ROUND_UP(143181 * n, f);
+ d++;
if ((d >= 7) && (d <= 63)) {
- if (d > 31)
- d = (d / 2) * 2;
- h = (14318 * n) / d;
+ if (d > 31) {
+ s = 1;
+ d >>= 1;
+ }
+ h = ((14318 * n) / d) >> s;
if (abs(h - freq) < abs(*best - freq)) {
*best = h;
*nom = n;
- if (d < 32) {
- *den = d;
- *div = 0;
- } else {
- *den = d / 2;
- *div = 1;
- }
+ *den = d;
+ *div = s;
}
}
}
_
Patches currently in -mm which might be from krzysztof.h1@xxxxx are
cirrusfb-check_par-fixes.patch
tdfxfb-fix-sdram-memory-size-detection.patch
tdfxfb-fix-frame-buffer-name-overrun.patch
linux-next.patch
fb-metronome-printk-format-warning.patch
rtc-m48t59-reduce-structure-m48t59_private.patch
rtc-m48t59-add-support-for-m48t02-and-m48t59-chips-2nd-rev.patch
fb-convert-lock-unlock_kernel-into-local-fb-mutex.patch
neofb-reduce-panning-function.patch
viafb-accelc-accelh-update.patch
viafb-viafbdevc-update.patch
fbdev-kconfig-update.patch
fbdev-kconfig-update-fix.patch
neofb-kill-some-redundant-code.patch
vga16fb-remove-open_lock-mutex.patch
neofb-remove-open_lock-mutex.patch
cirrusfb-remove-information-about-memory-size-during-mode-change.patch
cirrusfb-simplify-clock-calculation.patch
cirrusfb-remove-24-bpp-mode.patch
cirrusfb-drop-device-pointers-from-cirrusfb_info.patch
tdfxfb-do-not-make-changes-to-default-tdfx_fix.patch
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