1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/*
* Copyright 1997 through 2004 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of Marc Aurele La France not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. Marc Aurele La France makes no representations
* about the suitability of this software for any purpose. It is provided
* "as-is" without express or implied warranty.
*
* MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
* EVENT SHALL MARC AURELE LA FRANCE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "atiadapter.h"
#include "atichip.h"
#include "aticrtc.h"
#include "atistruct.h"
#include "ativalid.h"
#include "xf86.h"
/*
* ATIValidMode --
*
* This checks for hardware-related limits on mode timings.
*/
_X_EXPORT ModeStatus
ATIValidMode
(
int iScreen,
DisplayModePtr pMode,
Bool Verbose,
int flags
)
{
ScrnInfoPtr pScreenInfo = xf86Screens[iScreen];
ATIPtr pATI = ATIPTR(pScreenInfo);
int HBlankWidth, HAdjust, VScan, VInterlace;
#ifndef AVOID_CPIO
int VDisplay, VTotal;
#endif /* AVOID_CPIO */
if (flags & MODECHECK_FINAL)
{
return MODE_OK;
}
/*
* The following is done for every mode in the monitor section that
* survives the common layer's basic checks.
*/
if (pMode->VScan <= 1)
VScan = 1;
else
VScan = pMode->VScan;
if (pMode->Flags & V_DBLSCAN)
VScan <<= 1;
if (pATI->OptionPanelDisplay && (pATI->LCDPanelID >= 0))
{
if ((pMode->CrtcHDisplay > pATI->LCDHorizontal) ||
(pMode->CrtcVDisplay > pATI->LCDVertical))
return MODE_PANEL;
if (!pATI->OptionLCDSync || (pMode->type & M_T_BUILTIN))
{
if ((pMode->HDisplay > pATI->LCDHorizontal) ||
(pMode->VDisplay > pATI->LCDVertical))
return MODE_PANEL;
return MODE_OK;
}
/*
* Adjust effective timings for monitor checks. Here the modeline
* clock is ignored. Horizontal timings are scaled by the stretch
* ratio used for the displayed area. The vertical porch is scaled by
* the native resolution's aspect ratio. This seems rather arbitrary,
* and it is, but it does make all applicable VESA modes sync on a
* panel after stretching. This has the unfortunate, but necessary,
* side-effect of changing the mode's horizontal sync and vertical
* refresh rates. With some exceptions, this tends to increase the
* mode's horizontal sync rate, and decrease its vertical refresh rate.
*/
pMode->SynthClock = pATI->LCDClock;
pMode->CrtcHTotal = pMode->CrtcHBlankEnd =
ATIDivide(pMode->CrtcHTotal * pATI->LCDHorizontal,
pMode->CrtcHDisplay, -3, 1) << 3;
pMode->CrtcHSyncEnd =
ATIDivide(pMode->CrtcHSyncEnd * pATI->LCDHorizontal,
pMode->CrtcHDisplay, -3, 1) << 3;
pMode->CrtcHSyncStart =
ATIDivide(pMode->CrtcHSyncStart * pATI->LCDHorizontal,
pMode->CrtcHDisplay, -3, -1) << 3;
pMode->CrtcHDisplay = pMode->CrtcHBlankStart = pATI->LCDHorizontal;
pMode->CrtcVTotal = pMode->CrtcVBlankEnd =
ATIDivide((pMode->CrtcVTotal - pMode->CrtcVDisplay) *
pATI->LCDVertical, pATI->LCDHorizontal, 0, 1) +
pATI->LCDVertical;
pMode->CrtcVSyncEnd =
ATIDivide((pMode->CrtcVSyncEnd - pMode->CrtcVDisplay) *
pATI->LCDVertical, pATI->LCDHorizontal, 0, 1) +
pATI->LCDVertical;
pMode->CrtcVSyncStart =
ATIDivide((pMode->CrtcVSyncStart - pMode->CrtcVDisplay) *
pATI->LCDVertical, pATI->LCDHorizontal, 0, -1) +
pATI->LCDVertical;
pMode->CrtcVDisplay = pMode->CrtcVBlankStart = pATI->LCDVertical;
/*
* The CRTC only stretches the mode's displayed area, not its porches.
* Reverse-engineer the mode's timings back into the user specified
* values so that the stretched mode is produced when the CRTC is
* eventually programmed. The reverse-engineered mode is then checked
* against CRTC limits below.
*/
pMode->Clock = pATI->LCDClock;
HAdjust = pATI->LCDHorizontal - pMode->HDisplay;
# define ATIReverseHorizontal(_x) \
(pMode->_x - HAdjust)
pMode->HSyncStart = ATIReverseHorizontal(CrtcHSyncStart);
pMode->HSyncEnd = ATIReverseHorizontal(CrtcHSyncEnd);
pMode->HTotal = ATIReverseHorizontal(CrtcHTotal);
VInterlace = GetBits(pMode->Flags, V_INTERLACE) + 1;
# define ATIReverseVertical(_y) \
((((pMode->_y - pATI->LCDVertical) * VInterlace) / VScan) + \
pMode->VDisplay)
pMode->VSyncStart = ATIReverseVertical(CrtcVSyncStart);
pMode->VSyncEnd = ATIReverseVertical(CrtcVSyncEnd);
pMode->VTotal = ATIReverseVertical(CrtcVTotal);
# undef ATIReverseHorizontal
# undef ATIReverseVertical
}
HBlankWidth = (pMode->HTotal >> 3) - (pMode->HDisplay >> 3);
if (!HBlankWidth)
return MODE_HBLANK_NARROW;
switch (pATI->NewHW.crtc)
{
#ifndef AVOID_CPIO
case ATI_CRTC_VGA:
/* Prevent overscans */
if (HBlankWidth > 63)
return MODE_HBLANK_WIDE;
if (pMode->HDisplay > 2048)
return MODE_BAD_HVALUE;
if (VScan > 64)
return MODE_BAD_VSCAN;
VDisplay = pMode->VDisplay * VScan;
VTotal = pMode->VTotal * VScan;
if ((pMode->Flags & V_INTERLACE) && (pATI->Chip < ATI_CHIP_264CT))
{
VDisplay >>= 1;
VTotal >>= 1;
}
if ((VDisplay > 2048) || (VTotal > 2050))
return MODE_BAD_VVALUE;
break;
#endif /* AVOID_CPIO */
case ATI_CRTC_MACH64:
if (VScan > 2)
return MODE_NO_VSCAN;
break;
default:
break;
}
return MODE_OK;
}
|
