geode_dcon.c revision f29dbc25 
1/* Copyright (c) 2006 Advanced Micro Devices, Inc.
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to
5 * deal in the Software without restriction, including without limitation the
6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7 * sell copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
19 * IN THE SOFTWARE.
20 *
21 * Neither the name of the Advanced Micro Devices, Inc. nor the names of its
22 * contributors may be used to endorse or promote products derived from this
23 * software without specific prior written permission.
24 * */
25
26#ifdef HAVE_CONFIG_H
27#include "config.h"
28#endif
29
30/* Includes that are used by all drivers */
31#include <xf86.h>
32#include <xf86_OSproc.h>
33#include <compiler.h>
34
35#include "geode.h"
36#include <unistd.h>
37#include <fcntl.h>
38
39#define DCON_SLEEP_FILE "/sys/devices/platform/dcon/sleep"
40
41static Bool
42dcon_present(void)
43{
44    static int _dval = -1;
45
46    if (_dval == -1)
47	_dval = (access("/sys/class/power_supply/olpc-ac", F_OK) == 0);
48
49    return (Bool) _dval;
50}
51
52int
53DCONDPMSSet(ScrnInfoPtr pScrni, int mode)
54{
55    static int failed = -1;
56    int fd;
57    char value[1];
58
59    if (failed == -1)
60	failed = !dcon_present();
61
62    if (failed)
63	return 0;
64
65    fd = open(DCON_SLEEP_FILE, O_WRONLY);
66
67    if (fd < 0) {
68	failed = 1;
69	return 0;
70    }
71
72    switch (mode) {
73    case DPMSModeOn:
74	value[0] = '0';
75	break;
76    case DPMSModeStandby:
77    case DPMSModeSuspend:
78    case DPMSModeOff:
79	value[0] = '1';
80	break;
81    }
82
83    write(fd, value, sizeof(value));
84    close(fd);
85
86    return 1;
87}
88
89Bool
90dcon_init(ScrnInfoPtr pScrni)
91{
92    GeodeRec *pGeode = GEODEPTR(pScrni);
93
94    pGeode->mm_width = 0;
95    pGeode->mm_height = 0;
96
97    if (!dcon_present()) {
98	xf86DrvMsg(pScrni->scrnIndex, X_DEFAULT, "No DCON is present\n");
99	return FALSE;
100    }
101
102    pGeode->panelMode = xnfcalloc(1, sizeof(DisplayModeRec));
103    if (pGeode->panelMode == NULL)
104	return FALSE;
105
106    /* Set up the panel mode structure automagically */
107
108    pGeode->panelMode->type = M_T_DRIVER|M_T_PREFERRED;
109    pGeode->panelMode->Clock = 57275;
110    pGeode->panelMode->HDisplay = 1200;
111    pGeode->panelMode->HSyncStart = 1208;
112    pGeode->panelMode->HSyncEnd = 1216;
113    pGeode->panelMode->HTotal = 1240;
114    pGeode->panelMode->VDisplay = 900;
115    pGeode->panelMode->VSyncStart = 905;
116    pGeode->panelMode->VSyncEnd = 908;
117    pGeode->panelMode->VTotal = 912;
118    pGeode->panelMode->Flags = V_NHSYNC | V_NVSYNC;
119
120    pGeode->mm_width = 152;
121    pGeode->mm_height = 114;
122
123    xf86SetModeDefaultName(pGeode->panelMode);
124
125    /* TODO: Print board revision once sysfs exports it. */
126    xf86DrvMsg(pScrni->scrnIndex, X_DEFAULT, "DCON detected.\n");
127
128    return TRUE;
129}
130