3336. Fx up new MMIO macros (#3337, Matt Grossman).
3335. Clean up compiler warnings in lib/font/bitmap (#3411, Matt Grossman).
3334. TGA fixes, add sync on green (#3410, Matt Grossman).
3333. Fix NULL pointer dereference in libXaw (#3406, Christopher Sekiya).
3332. Add Rage128 support (#3405, Rik Faith, funded by ATI).
3331. Add MTRR support for NetBSD and OpenBSD. Add new NetBSD aperture
driver (#3404, Matthieu Herrb).
3330. Xterm patch #121 (#3402, Thomas Dickey).
3329. Rendition driver bugfixes and alpha related cleanups (#3400, Dejan
Ilic, Marc Langenbach, Egbert Eich).
3328. Add void input device (#3392, Frederic Lepied).
3327. Changed the Xon serial option to be able to select xon/xoff for
input, output or both. Add support for Graphire models. Change wacom
init phase to use new Xoff option (#3391, Frederic Lepied).
3326. Change the SwapAxes option to SwapXY in elographics/microtouch driver
to match an already existing option in the Dynapro driver. Add a Focus
class capability to the elographics driver (#3395, Patrick Lecoanet).
3325. Update mouse rate handling (#3388, Harald Koenig).
3324. Fix NULL pointer dereference in misprite.c (#3380, Edward Wang).
3323. Add FBDev and ShadowFB support to glint driver. Add new option
"NoWriteBitmap" (#3383, Michel Daenzer).
3322. Update SuperProbe to handle S3 Savage4, Savage200 and clean up
Trio3D/Savage3D detection (#3382,3384 Harald Koenig).
3321. Add new framebuffer code and tiny X DDX architecture (#3379, Keith
Packard).
3320. Add DGA2 documentation (#3378, Mark Vojkovich).
3319. Update XFree86 manpage wrt -bpp/-depth/-fbbpp (#3377, Andy Isaacson).
3318. Make SuperProbe check primary cards, only (#3374, Harald Koenig).
3317. Add SilkenMouse to *BSD (#3373, Matthieu Herrb).
3316. Allow SilkenMouse to work if not all drivers of an OS support SIGIO
(#3372, Keith Packard).
3315. Fix a few problems in TGA driver and add support for backing store
and SilkenMouse (#3371, Matt Grossman).
3314. Add smarter scheduler (#3370, Keith Packard).
3313. Xterm patch #120 (#3369, Thomas Dickey).
3312. Enable xf86SetKbdRate function on Solaris 8 (#3364, David Holland).
3311. Fix some bugs and add acceleration to Rendition server (#3360, Dejan
Ilic).
3310. Make raw DDC information available as properties in the root window
(#3357, Andrew Aitchison).
3309. Fix for xf86CreateRootWindow (#3355, Andrew Aitchison).
3308. Add manpage for the chips driver (#3353, David Bateman).
3307. Update contact info (#3352, Andrew van der Stock).
3306. Add kbd rate support for Linux (#3363, Harald Koenig).
3305. Update Portuguese XKB map (#3351, Joao Esteves, Francisco Colaco).
3304. Fix text clipping in 3dfx driver (#3349, Henrik Harmsen).
3303. Fix S3 ViRGE hw cursor (#3348, Harald Koenig).
3302. Fix clipping in 3dfx driver (#3342, Daryll Strauss).
3301. Enable SilkenMouse for 3dfx driver (#3341, Henrik Harmsen).
3300. Enable SIGIO support on LynxOS (#3339, Thomas Mueller).
3299. Get TRUE defined in sigio.c. Fix xterm compile problem on ISC (#3338,
Michael Rohleder).
3298. Correct DPMS suspend/standby modes for 3dfx driver (#3336, Henrik
Harmsen)
3297. Xterm patch #119 (#3335, Thomas Dickey).
1999-11-19 14:54:06 +01:00
|
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|
|
/*
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|
|
* Copyright <EFBFBD> 1999 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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|
* documentation for any purpose is hereby granted without fee, provided that
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|
* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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|
* representations about the suitability of this software for any purpose. It
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|
* is provided "as is" without express or implied warranty.
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*
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|
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|
|
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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|
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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|
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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|
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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|
|
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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2003-09-11 07:12:51 +02:00
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|
#ifdef HAVE_CONFIG_H
|
2005-12-27 09:29:50 +01:00
|
|
|
|
#include <kdrive-config.h>
|
2003-09-11 07:12:51 +02:00
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|
|
|
#endif
|
3336. Fx up new MMIO macros (#3337, Matt Grossman).
3335. Clean up compiler warnings in lib/font/bitmap (#3411, Matt Grossman).
3334. TGA fixes, add sync on green (#3410, Matt Grossman).
3333. Fix NULL pointer dereference in libXaw (#3406, Christopher Sekiya).
3332. Add Rage128 support (#3405, Rik Faith, funded by ATI).
3331. Add MTRR support for NetBSD and OpenBSD. Add new NetBSD aperture
driver (#3404, Matthieu Herrb).
3330. Xterm patch #121 (#3402, Thomas Dickey).
3329. Rendition driver bugfixes and alpha related cleanups (#3400, Dejan
Ilic, Marc Langenbach, Egbert Eich).
3328. Add void input device (#3392, Frederic Lepied).
3327. Changed the Xon serial option to be able to select xon/xoff for
input, output or both. Add support for Graphire models. Change wacom
init phase to use new Xoff option (#3391, Frederic Lepied).
3326. Change the SwapAxes option to SwapXY in elographics/microtouch driver
to match an already existing option in the Dynapro driver. Add a Focus
class capability to the elographics driver (#3395, Patrick Lecoanet).
3325. Update mouse rate handling (#3388, Harald Koenig).
3324. Fix NULL pointer dereference in misprite.c (#3380, Edward Wang).
3323. Add FBDev and ShadowFB support to glint driver. Add new option
"NoWriteBitmap" (#3383, Michel Daenzer).
3322. Update SuperProbe to handle S3 Savage4, Savage200 and clean up
Trio3D/Savage3D detection (#3382,3384 Harald Koenig).
3321. Add new framebuffer code and tiny X DDX architecture (#3379, Keith
Packard).
3320. Add DGA2 documentation (#3378, Mark Vojkovich).
3319. Update XFree86 manpage wrt -bpp/-depth/-fbbpp (#3377, Andy Isaacson).
3318. Make SuperProbe check primary cards, only (#3374, Harald Koenig).
3317. Add SilkenMouse to *BSD (#3373, Matthieu Herrb).
3316. Allow SilkenMouse to work if not all drivers of an OS support SIGIO
(#3372, Keith Packard).
3315. Fix a few problems in TGA driver and add support for backing store
and SilkenMouse (#3371, Matt Grossman).
3314. Add smarter scheduler (#3370, Keith Packard).
3313. Xterm patch #120 (#3369, Thomas Dickey).
3312. Enable xf86SetKbdRate function on Solaris 8 (#3364, David Holland).
3311. Fix some bugs and add acceleration to Rendition server (#3360, Dejan
Ilic).
3310. Make raw DDC information available as properties in the root window
(#3357, Andrew Aitchison).
3309. Fix for xf86CreateRootWindow (#3355, Andrew Aitchison).
3308. Add manpage for the chips driver (#3353, David Bateman).
3307. Update contact info (#3352, Andrew van der Stock).
3306. Add kbd rate support for Linux (#3363, Harald Koenig).
3305. Update Portuguese XKB map (#3351, Joao Esteves, Francisco Colaco).
3304. Fix text clipping in 3dfx driver (#3349, Henrik Harmsen).
3303. Fix S3 ViRGE hw cursor (#3348, Harald Koenig).
3302. Fix clipping in 3dfx driver (#3342, Daryll Strauss).
3301. Enable SilkenMouse for 3dfx driver (#3341, Henrik Harmsen).
3300. Enable SIGIO support on LynxOS (#3339, Thomas Mueller).
3299. Get TRUE defined in sigio.c. Fix xterm compile problem on ISC (#3338,
Michael Rohleder).
3298. Correct DPMS suspend/standby modes for 3dfx driver (#3336, Henrik
Harmsen)
3297. Xterm patch #119 (#3335, Thomas Dickey).
1999-11-19 14:54:06 +01:00
|
|
|
|
#include "s3.h"
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|
|
|
|
|
|
|
|
|
/*
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|
|
|
|
* Clock synthesis:
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|
|
|
|
*
|
|
|
|
|
* f_out = f_ref * ((M + 2) / ((N + 2) * (1 << R)))
|
|
|
|
|
*
|
|
|
|
|
* Constraints:
|
|
|
|
|
*
|
|
|
|
|
* 1. 135MHz <= f_ref * ((M + 2) / (N + 2)) <= 270 MHz
|
|
|
|
|
* 2. N >= 1
|
|
|
|
|
*
|
|
|
|
|
* Vertical refresh rate = clock / ((hsize + hblank) * (vsize + vblank))
|
|
|
|
|
* Horizontal refresh rate = clock / (hsize + hblank)
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/* all in kHz */
|
|
|
|
|
#define MIN_VCO 180000.0
|
|
|
|
|
#define MAX_VCO 360000.0
|
|
|
|
|
|
|
|
|
|
void
|
1999-12-30 04:03:21 +01:00
|
|
|
|
s3GetClock (int target, int *Mp, int *Np, int *Rp, int maxM, int maxN, int maxR)
|
3336. Fx up new MMIO macros (#3337, Matt Grossman).
3335. Clean up compiler warnings in lib/font/bitmap (#3411, Matt Grossman).
3334. TGA fixes, add sync on green (#3410, Matt Grossman).
3333. Fix NULL pointer dereference in libXaw (#3406, Christopher Sekiya).
3332. Add Rage128 support (#3405, Rik Faith, funded by ATI).
3331. Add MTRR support for NetBSD and OpenBSD. Add new NetBSD aperture
driver (#3404, Matthieu Herrb).
3330. Xterm patch #121 (#3402, Thomas Dickey).
3329. Rendition driver bugfixes and alpha related cleanups (#3400, Dejan
Ilic, Marc Langenbach, Egbert Eich).
3328. Add void input device (#3392, Frederic Lepied).
3327. Changed the Xon serial option to be able to select xon/xoff for
input, output or both. Add support for Graphire models. Change wacom
init phase to use new Xoff option (#3391, Frederic Lepied).
3326. Change the SwapAxes option to SwapXY in elographics/microtouch driver
to match an already existing option in the Dynapro driver. Add a Focus
class capability to the elographics driver (#3395, Patrick Lecoanet).
3325. Update mouse rate handling (#3388, Harald Koenig).
3324. Fix NULL pointer dereference in misprite.c (#3380, Edward Wang).
3323. Add FBDev and ShadowFB support to glint driver. Add new option
"NoWriteBitmap" (#3383, Michel Daenzer).
3322. Update SuperProbe to handle S3 Savage4, Savage200 and clean up
Trio3D/Savage3D detection (#3382,3384 Harald Koenig).
3321. Add new framebuffer code and tiny X DDX architecture (#3379, Keith
Packard).
3320. Add DGA2 documentation (#3378, Mark Vojkovich).
3319. Update XFree86 manpage wrt -bpp/-depth/-fbbpp (#3377, Andy Isaacson).
3318. Make SuperProbe check primary cards, only (#3374, Harald Koenig).
3317. Add SilkenMouse to *BSD (#3373, Matthieu Herrb).
3316. Allow SilkenMouse to work if not all drivers of an OS support SIGIO
(#3372, Keith Packard).
3315. Fix a few problems in TGA driver and add support for backing store
and SilkenMouse (#3371, Matt Grossman).
3314. Add smarter scheduler (#3370, Keith Packard).
3313. Xterm patch #120 (#3369, Thomas Dickey).
3312. Enable xf86SetKbdRate function on Solaris 8 (#3364, David Holland).
3311. Fix some bugs and add acceleration to Rendition server (#3360, Dejan
Ilic).
3310. Make raw DDC information available as properties in the root window
(#3357, Andrew Aitchison).
3309. Fix for xf86CreateRootWindow (#3355, Andrew Aitchison).
3308. Add manpage for the chips driver (#3353, David Bateman).
3307. Update contact info (#3352, Andrew van der Stock).
3306. Add kbd rate support for Linux (#3363, Harald Koenig).
3305. Update Portuguese XKB map (#3351, Joao Esteves, Francisco Colaco).
3304. Fix text clipping in 3dfx driver (#3349, Henrik Harmsen).
3303. Fix S3 ViRGE hw cursor (#3348, Harald Koenig).
3302. Fix clipping in 3dfx driver (#3342, Daryll Strauss).
3301. Enable SilkenMouse for 3dfx driver (#3341, Henrik Harmsen).
3300. Enable SIGIO support on LynxOS (#3339, Thomas Mueller).
3299. Get TRUE defined in sigio.c. Fix xterm compile problem on ISC (#3338,
Michael Rohleder).
3298. Correct DPMS suspend/standby modes for 3dfx driver (#3336, Henrik
Harmsen)
3297. Xterm patch #119 (#3335, Thomas Dickey).
1999-11-19 14:54:06 +01:00
|
|
|
|
{
|
|
|
|
|
int M, N, R, bestM, bestN;
|
|
|
|
|
int f_vco, f_out;
|
|
|
|
|
int err, abserr, besterr;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Compute correct R value to keep VCO in range
|
|
|
|
|
*/
|
|
|
|
|
for (R = 0; R <= maxR; R++)
|
|
|
|
|
{
|
|
|
|
|
f_vco = target * (1 << R);
|
|
|
|
|
if (MIN_VCO <= f_vco && f_vco < MAX_VCO)
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* M = f_out / f_ref * ((N + 2) * (1 << R)); */
|
|
|
|
|
besterr = target;
|
|
|
|
|
for (N = 0; N <= maxN; N++)
|
|
|
|
|
{
|
|
|
|
|
M = (target * (N + 2) * (1 << R) + (S3_CLOCK_REF/2)) / S3_CLOCK_REF - 2;
|
|
|
|
|
if (0 <= M && M <= maxM)
|
|
|
|
|
{
|
|
|
|
|
f_out = S3_CLOCK(M,N,R);
|
|
|
|
|
err = target - f_out;
|
|
|
|
|
if (err < 0)
|
|
|
|
|
err = -err;
|
|
|
|
|
if (err < besterr)
|
|
|
|
|
{
|
|
|
|
|
besterr = err;
|
|
|
|
|
bestM = M;
|
|
|
|
|
bestN = N;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
*Mp = bestM;
|
|
|
|
|
*Np = bestN;
|
|
|
|
|
*Rp = R;
|
|
|
|
|
}
|