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
|
/* Copyright (c) 2006 Advanced Micro Devices, 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
* AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Neither the name of the Advanced Micro Devices, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
* */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* Includes that are used by all drivers */
#include <xf86.h>
#include <xf86Modes.h>
#include <xf86_OSproc.h>
#include <compiler.h>
#include "geode.h"
#include <unistd.h>
#include <fcntl.h>
#define DCON_SLEEP_FILE "/sys/devices/platform/dcon/sleep"
#define DCON_FREEZE_FILE "/sys/devices/platform/dcon/freeze"
static Bool
dcon_present(void)
{
static int _dval = -1;
if (_dval == -1)
_dval = (access("/sys/class/power_supply/olpc-ac", F_OK) == 0);
return (Bool) _dval;
}
int
DCONDPMSSet(ScrnInfoPtr pScrni, int mode)
{
static int failed = -1;
ssize_t ret;
int fd;
char value[1];
if (failed == -1)
failed = !dcon_present();
if (failed)
return 0;
/* If the DCON is frozen, don't power it down, it was probably frozen
* for a reason and powering it down would corrupt the display.
* This is needed to avoid losing OLPC's frozen boot image during X
* startup, where DPMS is used to power down and up the display.
* When geode uses KMS this will not be needed as the system realises
* that no mode change is needed and the display power is untouched. */
fd = open(DCON_FREEZE_FILE, O_RDONLY);
if (fd < 0) {
failed = 1;
return 0;
}
ret = read(fd, value, 1);
close(fd);
if (ret == 1) {
if (value[0] == '1')
return 0;
}
fd = open(DCON_SLEEP_FILE, O_WRONLY);
if (fd < 0) {
failed = 1;
return 0;
}
switch (mode) {
case DPMSModeOn:
value[0] = '0';
break;
case DPMSModeStandby:
case DPMSModeSuspend:
case DPMSModeOff:
value[0] = '1';
break;
}
ret = write(fd, value, sizeof(value));
close(fd);
if (ret < 0) {
failed = 1;
return 0;
}
return 1;
}
Bool
dcon_init(ScrnInfoPtr pScrni)
{
GeodeRec *pGeode = GEODEPTR(pScrni);
pGeode->mm_width = 0;
pGeode->mm_height = 0;
if (!dcon_present()) {
xf86DrvMsg(pScrni->scrnIndex, X_DEFAULT, "No DCON is present\n");
return FALSE;
}
pGeode->panelMode = XNFcallocarray(1, sizeof(DisplayModeRec));
if (pGeode->panelMode == NULL)
return FALSE;
/* Set up the panel mode structure automagically */
pGeode->panelMode->type = M_T_DRIVER | M_T_PREFERRED;
pGeode->panelMode->Clock = 57275;
pGeode->panelMode->HDisplay = 1200;
pGeode->panelMode->HSyncStart = 1208;
pGeode->panelMode->HSyncEnd = 1216;
pGeode->panelMode->HTotal = 1240;
pGeode->panelMode->VDisplay = 900;
pGeode->panelMode->VSyncStart = 905;
pGeode->panelMode->VSyncEnd = 908;
pGeode->panelMode->VTotal = 912;
pGeode->panelMode->Flags = V_NHSYNC | V_NVSYNC;
pGeode->mm_width = 152;
pGeode->mm_height = 114;
xf86SetModeDefaultName(pGeode->panelMode);
/* TODO: Print board revision once sysfs exports it. */
xf86DrvMsg(pScrni->scrnIndex, X_DEFAULT, "DCON detected.\n");
return TRUE;
}
|
