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xserver/hw/xfree86/modes/xf86Modes.c

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/*
* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of the copyright holder(s)
* and author(s) shall not be used in advertising or otherwise to promote
* the sale, use or other dealings in this Software without prior written
* authorization from the copyright holder(s) and author(s).
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#else
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#endif
#include "xf86Modes.h"
#include "xf86Priv.h"
extern XF86ConfigPtr xf86configptr;
/**
* @file this file contains symbols from xf86Mode.c and friends that are static
* there but we still want to use. We need to come up with better API here.
*/
#if XORG_VERSION_CURRENT <= XORG_VERSION_NUMERIC(7,2,99,2,0)
/**
* Calculates the horizontal sync rate of a mode.
*
* Exact copy of xf86Mode.c's.
*/
_X_EXPORT double
xf86ModeHSync(DisplayModePtr mode)
{
double hsync = 0.0;
if (mode->HSync > 0.0)
hsync = mode->HSync;
else if (mode->HTotal > 0)
hsync = (float)mode->Clock / (float)mode->HTotal;
return hsync;
}
/**
* Calculates the vertical refresh rate of a mode.
*
* Exact copy of xf86Mode.c's.
*/
_X_EXPORT double
xf86ModeVRefresh(DisplayModePtr mode)
{
double refresh = 0.0;
if (mode->VRefresh > 0.0)
refresh = mode->VRefresh;
else if (mode->HTotal > 0 && mode->VTotal > 0) {
refresh = mode->Clock * 1000.0 / mode->HTotal / mode->VTotal;
if (mode->Flags & V_INTERLACE)
refresh *= 2.0;
if (mode->Flags & V_DBLSCAN)
refresh /= 2.0;
if (mode->VScan > 1)
refresh /= (float)(mode->VScan);
}
return refresh;
}
_X_EXPORT int
xf86ModeWidth (DisplayModePtr mode, Rotation rotation)
{
switch (rotation & 0xf) {
case RR_Rotate_0:
case RR_Rotate_180:
return mode->HDisplay;
case RR_Rotate_90:
case RR_Rotate_270:
return mode->VDisplay;
default:
return 0;
}
}
_X_EXPORT int
xf86ModeHeight (DisplayModePtr mode, Rotation rotation)
{
switch (rotation & 0xf) {
case RR_Rotate_0:
case RR_Rotate_180:
return mode->VDisplay;
case RR_Rotate_90:
case RR_Rotate_270:
return mode->HDisplay;
default:
return 0;
}
}
/** Sets a default mode name of <width>x<height> on a mode. */
_X_EXPORT void
xf86SetModeDefaultName(DisplayModePtr mode)
{
if (mode->name != NULL)
xfree(mode->name);
mode->name = XNFprintf("%dx%d", mode->HDisplay, mode->VDisplay);
}
/*
* xf86SetModeCrtc
*
* Initialises the Crtc parameters for a mode. The initialisation includes
* adjustments for interlaced and double scan modes.
*
* Exact copy of xf86Mode.c's.
*/
_X_EXPORT void
xf86SetModeCrtc(DisplayModePtr p, int adjustFlags)
{
if ((p == NULL) || ((p->type & M_T_CRTC_C) == M_T_BUILTIN))
return;
p->CrtcHDisplay = p->HDisplay;
p->CrtcHSyncStart = p->HSyncStart;
p->CrtcHSyncEnd = p->HSyncEnd;
p->CrtcHTotal = p->HTotal;
p->CrtcHSkew = p->HSkew;
p->CrtcVDisplay = p->VDisplay;
p->CrtcVSyncStart = p->VSyncStart;
p->CrtcVSyncEnd = p->VSyncEnd;
p->CrtcVTotal = p->VTotal;
if (p->Flags & V_INTERLACE) {
if (adjustFlags & INTERLACE_HALVE_V) {
p->CrtcVDisplay /= 2;
p->CrtcVSyncStart /= 2;
p->CrtcVSyncEnd /= 2;
p->CrtcVTotal /= 2;
}
/* Force interlaced modes to have an odd VTotal */
/* maybe we should only do this when INTERLACE_HALVE_V is set? */
p->CrtcVTotal |= 1;
}
if (p->Flags & V_DBLSCAN) {
p->CrtcVDisplay *= 2;
p->CrtcVSyncStart *= 2;
p->CrtcVSyncEnd *= 2;
p->CrtcVTotal *= 2;
}
if (p->VScan > 1) {
p->CrtcVDisplay *= p->VScan;
p->CrtcVSyncStart *= p->VScan;
p->CrtcVSyncEnd *= p->VScan;
p->CrtcVTotal *= p->VScan;
}
p->CrtcVBlankStart = min(p->CrtcVSyncStart, p->CrtcVDisplay);
p->CrtcVBlankEnd = max(p->CrtcVSyncEnd, p->CrtcVTotal);
p->CrtcHBlankStart = min(p->CrtcHSyncStart, p->CrtcHDisplay);
p->CrtcHBlankEnd = max(p->CrtcHSyncEnd, p->CrtcHTotal);
p->CrtcHAdjusted = FALSE;
p->CrtcVAdjusted = FALSE;
}
/**
* Allocates and returns a copy of pMode, including pointers within pMode.
*/
_X_EXPORT DisplayModePtr
xf86DuplicateMode(DisplayModePtr pMode)
{
DisplayModePtr pNew;
pNew = xnfalloc(sizeof(DisplayModeRec));
*pNew = *pMode;
pNew->next = NULL;
pNew->prev = NULL;
if (pNew->name == NULL) {
xf86SetModeDefaultName(pMode);
} else {
pNew->name = xnfstrdup(pMode->name);
}
return pNew;
}
/**
* Duplicates every mode in the given list and returns a pointer to the first
* mode.
*
* \param modeList doubly-linked mode list
*/
_X_EXPORT DisplayModePtr
xf86DuplicateModes(ScrnInfoPtr pScrn, DisplayModePtr modeList)
{
DisplayModePtr first = NULL, last = NULL;
DisplayModePtr mode;
for (mode = modeList; mode != NULL; mode = mode->next) {
DisplayModePtr new;
new = xf86DuplicateMode(mode);
/* Insert pNew into modeList */
if (last) {
last->next = new;
new->prev = last;
} else {
first = new;
new->prev = NULL;
}
new->next = NULL;
last = new;
}
return first;
}
/**
* Returns true if the given modes should program to the same timings.
*
* This doesn't use Crtc values, as it might be used on ModeRecs without the
* Crtc values set. So, it's assumed that the other numbers are enough.
*
* This isn't in xf86Modes.c, but it might deserve to be there.
*/
_X_EXPORT Bool
xf86ModesEqual(DisplayModePtr pMode1, DisplayModePtr pMode2)
{
if (pMode1->Clock == pMode2->Clock &&
pMode1->HDisplay == pMode2->HDisplay &&
pMode1->HSyncStart == pMode2->HSyncStart &&
pMode1->HSyncEnd == pMode2->HSyncEnd &&
pMode1->HTotal == pMode2->HTotal &&
pMode1->HSkew == pMode2->HSkew &&
pMode1->VDisplay == pMode2->VDisplay &&
pMode1->VSyncStart == pMode2->VSyncStart &&
pMode1->VSyncEnd == pMode2->VSyncEnd &&
pMode1->VTotal == pMode2->VTotal &&
pMode1->VScan == pMode2->VScan &&
pMode1->Flags == pMode2->Flags)
{
return TRUE;
} else {
return FALSE;
}
}
/* exact copy of xf86Mode.c */
static void
add(char **p, char *new)
{
*p = xnfrealloc(*p, strlen(*p) + strlen(new) + 2);
strcat(*p, " ");
strcat(*p, new);
}
/**
* Print out a modeline.
*
* Convenient VRefresh printing was added, though, compared to xf86Mode.c
*/
_X_EXPORT void
xf86PrintModeline(int scrnIndex,DisplayModePtr mode)
{
char tmp[256];
char *flags = xnfcalloc(1, 1);
if (mode->HSkew) {
snprintf(tmp, 256, "hskew %i", mode->HSkew);
add(&flags, tmp);
}
if (mode->VScan) {
snprintf(tmp, 256, "vscan %i", mode->VScan);
add(&flags, tmp);
}
if (mode->Flags & V_INTERLACE) add(&flags, "interlace");
if (mode->Flags & V_CSYNC) add(&flags, "composite");
if (mode->Flags & V_DBLSCAN) add(&flags, "doublescan");
if (mode->Flags & V_BCAST) add(&flags, "bcast");
if (mode->Flags & V_PHSYNC) add(&flags, "+hsync");
if (mode->Flags & V_NHSYNC) add(&flags, "-hsync");
if (mode->Flags & V_PVSYNC) add(&flags, "+vsync");
if (mode->Flags & V_NVSYNC) add(&flags, "-vsync");
if (mode->Flags & V_PCSYNC) add(&flags, "+csync");
if (mode->Flags & V_NCSYNC) add(&flags, "-csync");
#if 0
if (mode->Flags & V_CLKDIV2) add(&flags, "vclk/2");
#endif
xf86DrvMsg(scrnIndex, X_INFO,
"Modeline \"%s\"x%.01f %6.2f %i %i %i %i %i %i %i %i%s "
"(%.01f kHz)\n",
mode->name, mode->VRefresh, mode->Clock/1000., mode->HDisplay,
mode->HSyncStart, mode->HSyncEnd, mode->HTotal,
mode->VDisplay, mode->VSyncStart, mode->VSyncEnd,
mode->VTotal, flags, xf86ModeHSync(mode));
xfree(flags);
}
#endif /* XORG_VERSION_CURRENT <= 7.2.99.2 */
/**
* Marks as bad any modes with unsupported flags.
*
* \param modeList doubly-linked or circular list of modes.
* \param flags flags supported by the driver.
*
* \bug only V_INTERLACE and V_DBLSCAN are supported. Is that enough?
*
* This is not in xf86Modes.c, but would be part of the proposed new API.
*/
_X_EXPORT void
xf86ValidateModesFlags(ScrnInfoPtr pScrn, DisplayModePtr modeList,
int flags)
{
DisplayModePtr mode;
for (mode = modeList; mode != NULL; mode = mode->next) {
if (mode->Flags & V_INTERLACE && !(flags & V_INTERLACE))
mode->status = MODE_NO_INTERLACE;
if (mode->Flags & V_DBLSCAN && !(flags & V_DBLSCAN))
mode->status = MODE_NO_DBLESCAN;
}
}
/**
* Marks as bad any modes extending beyond the given max X, Y, or pitch.
*
* \param modeList doubly-linked or circular list of modes.
*
* This is not in xf86Modes.c, but would be part of the proposed new API.
*/
_X_EXPORT void
xf86ValidateModesSize(ScrnInfoPtr pScrn, DisplayModePtr modeList,
int maxX, int maxY, int maxPitch)
{
DisplayModePtr mode;
for (mode = modeList; mode != NULL; mode = mode->next) {
if (maxPitch > 0 && mode->HDisplay > maxPitch)
mode->status = MODE_BAD_WIDTH;
if (maxX > 0 && mode->HDisplay > maxX)
mode->status = MODE_VIRTUAL_X;
if (maxY > 0 && mode->VDisplay > maxY)
mode->status = MODE_VIRTUAL_Y;
if (mode->next == modeList)
break;
}
}
/**
* Marks as bad any modes that aren't supported by the given monitor's
* hsync and vrefresh ranges.
*
* \param modeList doubly-linked or circular list of modes.
*
* This is not in xf86Modes.c, but would be part of the proposed new API.
*/
_X_EXPORT void
xf86ValidateModesSync(ScrnInfoPtr pScrn, DisplayModePtr modeList,
MonPtr mon)
{
DisplayModePtr mode;
for (mode = modeList; mode != NULL; mode = mode->next) {
Bool bad;
int i;
bad = TRUE;
for (i = 0; i < mon->nHsync; i++) {
if (xf86ModeHSync(mode) >= mon->hsync[i].lo * (1-SYNC_TOLERANCE) &&
xf86ModeHSync(mode) <= mon->hsync[i].hi * (1+SYNC_TOLERANCE))
{
bad = FALSE;
}
}
if (bad)
mode->status = MODE_HSYNC;
bad = TRUE;
for (i = 0; i < mon->nVrefresh; i++) {
if (xf86ModeVRefresh(mode) >= mon->vrefresh[i].lo * (1-SYNC_TOLERANCE) &&
xf86ModeVRefresh(mode) <= mon->vrefresh[i].hi * (1+SYNC_TOLERANCE))
{
bad = FALSE;
}
}
if (bad)
mode->status = MODE_VSYNC;
if (mode->next == modeList)
break;
}
}
/**
* Marks as bad any modes extending beyond outside of the given clock ranges.
*
* \param modeList doubly-linked or circular list of modes.
* \param min pointer to minimums of clock ranges
* \param max pointer to maximums of clock ranges
* \param n_ranges number of ranges.
*
* This is not in xf86Modes.c, but would be part of the proposed new API.
*/
_X_EXPORT void
xf86ValidateModesClocks(ScrnInfoPtr pScrn, DisplayModePtr modeList,
int *min, int *max, int n_ranges)
{
DisplayModePtr mode;
int i;
for (mode = modeList; mode != NULL; mode = mode->next) {
Bool good = FALSE;
for (i = 0; i < n_ranges; i++) {
if (mode->Clock >= min[i] * (1-SYNC_TOLERANCE) &&
mode->Clock <= max[i] * (1+SYNC_TOLERANCE)) {
good = TRUE;
break;
}
}
if (!good)
mode->status = MODE_CLOCK_RANGE;
}
}
/**
* If the user has specified a set of mode names to use, mark as bad any modes
* not listed.
*
* The user mode names specified are prefixes to names of modes, so "1024x768"
* will match modes named "1024x768", "1024x768x75", "1024x768-good", but
* "1024x768x75" would only match "1024x768x75" from that list.
*
* MODE_BAD is used as the rejection flag, for lack of a better flag.
*
* \param modeList doubly-linked or circular list of modes.
*
* This is not in xf86Modes.c, but would be part of the proposed new API.
*/
_X_EXPORT void
xf86ValidateModesUserConfig(ScrnInfoPtr pScrn, DisplayModePtr modeList)
{
DisplayModePtr mode;
if (pScrn->display->modes[0] == NULL)
return;
for (mode = modeList; mode != NULL; mode = mode->next) {
int i;
Bool good = FALSE;
for (i = 0; pScrn->display->modes[i] != NULL; i++) {
if (strncmp(pScrn->display->modes[i], mode->name,
strlen(pScrn->display->modes[i])) == 0) {
good = TRUE;
break;
}
}
if (!good)
mode->status = MODE_BAD;
}
}
/**
* Frees any modes from the list with a status other than MODE_OK.
*
* \param modeList pointer to a doubly-linked or circular list of modes.
* \param verbose determines whether the reason for mode invalidation is
* printed.
*
* This is not in xf86Modes.c, but would be part of the proposed new API.
*/
_X_EXPORT void
xf86PruneInvalidModes(ScrnInfoPtr pScrn, DisplayModePtr *modeList,
Bool verbose)
{
DisplayModePtr mode;
for (mode = *modeList; mode != NULL;) {
DisplayModePtr next = mode->next, first = *modeList;
if (mode->status != MODE_OK) {
if (verbose) {
char *type = "";
if (mode->type & M_T_BUILTIN)
type = "built-in ";
else if (mode->type & M_T_DEFAULT)
type = "default ";
xf86DrvMsg(pScrn->scrnIndex, X_INFO,
"Not using %smode \"%s\" (%s)\n", type, mode->name,
xf86ModeStatusToString(mode->status));
}
xf86DeleteMode(modeList, mode);
}
if (next == first)
break;
mode = next;
}
}
/**
* Adds the new mode into the mode list, and returns the new list
*
* \param modes doubly-linked mode list.
*/
_X_EXPORT DisplayModePtr
xf86ModesAdd(DisplayModePtr modes, DisplayModePtr new)
{
if (modes == NULL)
return new;
if (new) {
DisplayModePtr mode = modes;
while (mode->next)
mode = mode->next;
mode->next = new;
new->prev = mode;
}
return modes;
}
/**
* Build a mode list from a list of config file modes
*/
static DisplayModePtr
xf86GetConfigModes (XF86ConfModeLinePtr conf_mode)
{
DisplayModePtr head = NULL, prev = NULL, mode;
for (; conf_mode; conf_mode = (XF86ConfModeLinePtr) conf_mode->list.next)
{
mode = xcalloc(1, sizeof(DisplayModeRec));
if (!mode)
continue;
mode->name = xstrdup(conf_mode->ml_identifier);
if (!mode->name)
{
xfree (mode);
continue;
}
mode->type = 0;
mode->Clock = conf_mode->ml_clock;
mode->HDisplay = conf_mode->ml_hdisplay;
mode->HSyncStart = conf_mode->ml_hsyncstart;
mode->HSyncEnd = conf_mode->ml_hsyncend;
mode->HTotal = conf_mode->ml_htotal;
mode->VDisplay = conf_mode->ml_vdisplay;
mode->VSyncStart = conf_mode->ml_vsyncstart;
mode->VSyncEnd = conf_mode->ml_vsyncend;
mode->VTotal = conf_mode->ml_vtotal;
mode->Flags = conf_mode->ml_flags;
mode->HSkew = conf_mode->ml_hskew;
mode->VScan = conf_mode->ml_vscan;
mode->prev = prev;
mode->next = NULL;
if (prev)
prev->next = mode;
else
head = mode;
prev = mode;
}
return head;
}
/**
* Build a mode list from a monitor configuration
*/
_X_EXPORT DisplayModePtr
xf86GetMonitorModes (ScrnInfoPtr pScrn, XF86ConfMonitorPtr conf_monitor)
{
DisplayModePtr modes = NULL;
XF86ConfModesLinkPtr modes_link;
if (!conf_monitor)
return NULL;
/*
* first we collect the mode lines from the UseModes directive
*/
for (modes_link = conf_monitor->mon_modes_sect_lst;
modes_link;
modes_link = modes_link->list.next)
{
/* If this modes link hasn't been resolved, go look it up now */
if (!modes_link->ml_modes)
modes_link->ml_modes = xf86findModes (modes_link->ml_modes_str,
xf86configptr->conf_modes_lst);
if (modes_link->ml_modes)
modes = xf86ModesAdd (modes,
xf86GetConfigModes (modes_link->ml_modes->mon_modeline_lst));
}
return xf86ModesAdd (modes,
xf86GetConfigModes (conf_monitor->mon_modeline_lst));
}
/**
* Build a mode list containing all of the default modes
*/
_X_EXPORT DisplayModePtr
xf86GetDefaultModes (Bool interlaceAllowed, Bool doubleScanAllowed)
{
DisplayModePtr head = NULL, prev = NULL, mode;
int i;
for (i = 0; xf86DefaultModes[i].name != NULL; i++)
{
DisplayModePtr defMode = &xf86DefaultModes[i];
if (!interlaceAllowed && (defMode->Flags & V_INTERLACE))
continue;
if (!doubleScanAllowed && (defMode->Flags & V_DBLSCAN))
continue;
mode = xalloc(sizeof(DisplayModeRec));
if (!mode)
continue;
memcpy(mode,&xf86DefaultModes[i],sizeof(DisplayModeRec));
mode->name = xstrdup(xf86DefaultModes[i].name);
if (!mode->name)
{
xfree (mode);
continue;
}
mode->prev = prev;
mode->next = NULL;
if (prev)
prev->next = mode;
else
head = mode;
prev = mode;
}
return head;
}
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