ReactOS 0.4.15-dev-6057-gd708c79
edid.c
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1/*
2 * ReactOS VBE EDID management
3 *
4 * Copyright (C) 2006 Herv Poussineau
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 */
21
22/* INCLUDES *******************************************************************/
23
24#include "vbemp.h"
25
26/* PUBLIC AND PRIVATE FUNCTIONS ***********************************************/
27
28static VOID NTAPI
30 PVOID HwDeviceExtension,
31 UCHAR data)
32{
33 INT10_BIOS_ARGUMENTS BiosRegisters;
34 PVBE_DEVICE_EXTENSION VBEDeviceExtension =
35 (PVBE_DEVICE_EXTENSION)HwDeviceExtension;
36
37 VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
38 BiosRegisters.Eax = VBE_DDC;
39 BiosRegisters.Ebx = VBE_DDC_WRITE_SCL_CLOCK_LINE;
40 BiosRegisters.Ecx = VBEDeviceExtension->CurrentChildIndex;
41 BiosRegisters.Edx = data;
42 VBEDeviceExtension->Int10Interface.Int10CallBios(
43 VBEDeviceExtension->Int10Interface.Context,
44 &BiosRegisters);
45}
46
47static VOID NTAPI
49 PVOID HwDeviceExtension,
50 UCHAR data)
51{
52 INT10_BIOS_ARGUMENTS BiosRegisters;
53 PVBE_DEVICE_EXTENSION VBEDeviceExtension =
54 (PVBE_DEVICE_EXTENSION)HwDeviceExtension;
55
56 VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
57 BiosRegisters.Eax = VBE_DDC;
58 BiosRegisters.Ebx = VBE_DDC_WRITE_SDA_DATA_LINE;
59 BiosRegisters.Ecx = VBEDeviceExtension->CurrentChildIndex;
60 BiosRegisters.Edx = data;
61 VBEDeviceExtension->Int10Interface.Int10CallBios(
62 VBEDeviceExtension->Int10Interface.Context,
63 &BiosRegisters);
64}
65
66static BOOLEAN NTAPI
68 PVOID HwDeviceExtension)
69{
70 INT10_BIOS_ARGUMENTS BiosRegisters;
71 PVBE_DEVICE_EXTENSION VBEDeviceExtension =
72 (PVBE_DEVICE_EXTENSION)HwDeviceExtension;
73
74 VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
75 BiosRegisters.Eax = VBE_DDC;
76 BiosRegisters.Ebx = VBE_DDC_READ_SCL_CLOCK_LINE;
77 BiosRegisters.Ecx = VBEDeviceExtension->CurrentChildIndex;
78 VBEDeviceExtension->Int10Interface.Int10CallBios(
79 VBEDeviceExtension->Int10Interface.Context,
80 &BiosRegisters);
81
82 return BiosRegisters.Edx;
83}
84
85static BOOLEAN NTAPI
87 PVOID HwDeviceExtension)
88{
89 INT10_BIOS_ARGUMENTS BiosRegisters;
90 PVBE_DEVICE_EXTENSION VBEDeviceExtension =
91 (PVBE_DEVICE_EXTENSION)HwDeviceExtension;
92
93 VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
94 BiosRegisters.Eax = VBE_DDC;
95 BiosRegisters.Ebx = VBE_DDC_READ_SDA_DATA_LINE;
96 BiosRegisters.Ecx = VBEDeviceExtension->CurrentChildIndex;
97 VBEDeviceExtension->Int10Interface.Int10CallBios(
98 VBEDeviceExtension->Int10Interface.Context,
99 &BiosRegisters);
100
101 return BiosRegisters.Edx;
102}
103
104static BOOLEAN
106 IN PVOID HwDeviceExtension,
107 IN ULONG ChildIndex,
108 OUT PVOID Edid)
109{
110 INT10_BIOS_ARGUMENTS BiosRegisters;
111 PVBE_DEVICE_EXTENSION VBEDeviceExtension =
112 (PVBE_DEVICE_EXTENSION)HwDeviceExtension;
113 DDC_CONTROL DDCControl;
114 BOOLEAN ret;
115
116 VideoPortDebugPrint(Trace, "VBEMP: VBEReadEdidUsingSCI() called\n");
117
118 /*
119 * Check if graphic card support IC interface
120 */
121 VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
122 BiosRegisters.Eax = VBE_DDC;
123 BiosRegisters.Ebx = VBE_DDC_REPORT_CAPABILITIES;
124 BiosRegisters.Ecx = ChildIndex;
125 VBEDeviceExtension->Int10Interface.Int10CallBios(
126 VBEDeviceExtension->Int10Interface.Context,
127 &BiosRegisters);
128 if (VBE_GETRETURNCODE(BiosRegisters.Eax) != VBE_SUCCESS)
129 return FALSE;
130 VideoPortDebugPrint(Info, "VBEMP: VBE/SCI version %x\n", BiosRegisters.Ecx);
131 if ((BiosRegisters.Ebx & 0xF) != 0xF)
132 return FALSE;
133
134 /*
135 * Enable IC interface
136 */
137 VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
138 BiosRegisters.Eax = VBE_DDC;
139 BiosRegisters.Ebx = VBE_DDC_BEGIN_SCL_SDA_CONTROL;
140 BiosRegisters.Ecx = ChildIndex;
141 VBEDeviceExtension->Int10Interface.Int10CallBios(
142 VBEDeviceExtension->Int10Interface.Context,
143 &BiosRegisters);
144 if (VBE_GETRETURNCODE(BiosRegisters.Eax) != VBE_SUCCESS)
145 return FALSE;
146
147 /*
148 * Read EDID information
149 */
150 VBEDeviceExtension->CurrentChildIndex = ChildIndex;
151 DDCControl.Size = sizeof(DDC_CONTROL);
156 DDCControl.EdidSegment = 0;
158 HwDeviceExtension,
159 &DDCControl,
160 (PUCHAR)&Edid,
162
163 /*
164 * Disable IC interface
165 */
166 VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
167 BiosRegisters.Eax = VBE_DDC;
168 BiosRegisters.Ebx = VBE_DDC_END_SCL_SDA_CONTROL;
169 VBEDeviceExtension->Int10Interface.Int10CallBios(
170 VBEDeviceExtension->Int10Interface.Context,
171 &BiosRegisters);
172 /* Ignore the possible error, as we did our best to prevent problems */
173
174 return ret;
175}
176
177static BOOLEAN
179 IN PVBE_DEVICE_EXTENSION VBEDeviceExtension,
180 IN ULONG ChildIndex,
181 OUT PVOID Edid)
182{
183 INT10_BIOS_ARGUMENTS BiosRegisters;
184
185 VideoPortDebugPrint(Trace, "VBEMP: VBEReadEdid() called\n");
186
187 /*
188 * Check if DDC1/DDC2 is supported
189 */
190 VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
191 BiosRegisters.Eax = VBE_DDC;
192 VBEDeviceExtension->Int10Interface.Int10CallBios(
193 VBEDeviceExtension->Int10Interface.Context,
194 &BiosRegisters);
195 if (VBE_GETRETURNCODE(BiosRegisters.Eax) != VBE_SUCCESS)
196 return FALSE;
197 if ((BiosRegisters.Ebx & 3) == 0)
198 return FALSE;
199
200 /*
201 * Directly read EDID information
202 */
203 VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
204 BiosRegisters.Eax = VBE_DDC;
205 BiosRegisters.Ebx = VBE_DDC_READ_EDID;
206 BiosRegisters.Ecx = ChildIndex;
207 BiosRegisters.Edi = VBEDeviceExtension->TrampolineMemoryOffset;
208 BiosRegisters.SegEs = VBEDeviceExtension->TrampolineMemorySegment;
209 VBEDeviceExtension->Int10Interface.Int10CallBios(
210 VBEDeviceExtension->Int10Interface.Context,
211 &BiosRegisters);
212
213 if (VBE_GETRETURNCODE(BiosRegisters.Eax) != VBE_SUCCESS)
214 return FALSE;
215
216 /*
217 * Copy the EDID information to our buffer
218 */
219 VBEDeviceExtension->Int10Interface.Int10ReadMemory(
220 VBEDeviceExtension->Int10Interface.Context,
221 VBEDeviceExtension->TrampolineMemorySegment,
222 VBEDeviceExtension->TrampolineMemoryOffset,
223 Edid,
225
226 return TRUE;
227}
228
231 IN PVOID HwDeviceExtension,
232 IN PVIDEO_CHILD_ENUM_INFO ChildEnumInfo,
233 OUT PVIDEO_CHILD_TYPE VideoChildType,
234 OUT PUCHAR pChildDescriptor,
235 OUT PULONG UId,
236 OUT PULONG pUnused)
237{
238 if (ChildEnumInfo->Size != sizeof(VIDEO_CHILD_ENUM_INFO) ||
239 ChildEnumInfo->ChildDescriptorSize < MAX_SIZE_OF_EDID)
240 {
242 }
243
244 if (ChildEnumInfo->ChildIndex == 0)
245 {
246 /* We don't support enumeration of ACPI children */
248 }
249 else if (ChildEnumInfo->ChildIndex == 1)
250 {
251 /* Our screen */
252 *VideoChildType = Monitor;
253 *UId = 1;
254
255 /* Try to read EDID information using 2 different methods. */
256 if (VBEReadEdid(HwDeviceExtension, 0, pChildDescriptor))
257 {
258 VideoPortDebugPrint(Info, "VBEMP: EDID information read directly\n");
259 }
260 else if (VBEReadEdidUsingSCI(HwDeviceExtension, 0, pChildDescriptor))
261 {
262 VideoPortDebugPrint(Info, "VBEMP: EDID information read using I2C\n");
263 }
264
266 }
267 else
268 {
269 /* Unknown hardware id */
271 }
272}
unsigned char BOOLEAN
#define ERROR_NO_MORE_DEVICES
Definition: dderror.h:18
#define ERROR_INVALID_FUNCTION
Definition: dderror.h:6
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
#define Trace(x)
Definition: inflate.c:42
static BOOLEAN VBEReadEdid(IN PVBE_DEVICE_EXTENSION VBEDeviceExtension, IN ULONG ChildIndex, OUT PVOID Edid)
Definition: edid.c:178
static VOID NTAPI VBEWriteClockLine(PVOID HwDeviceExtension, UCHAR data)
Definition: edid.c:29
VP_STATUS NTAPI VBEGetVideoChildDescriptor(IN PVOID HwDeviceExtension, IN PVIDEO_CHILD_ENUM_INFO ChildEnumInfo, OUT PVIDEO_CHILD_TYPE VideoChildType, OUT PUCHAR pChildDescriptor, OUT PULONG UId, OUT PULONG pUnused)
Definition: edid.c:230
static BOOLEAN VBEReadEdidUsingSCI(IN PVOID HwDeviceExtension, IN ULONG ChildIndex, OUT PVOID Edid)
Definition: edid.c:105
static BOOLEAN NTAPI VBEReadClockLine(PVOID HwDeviceExtension)
Definition: edid.c:67
static BOOLEAN NTAPI VBEReadDataLine(PVOID HwDeviceExtension)
Definition: edid.c:86
static VOID NTAPI VBEWriteDataLine(PVOID HwDeviceExtension, UCHAR data)
Definition: edid.c:48
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: gl.h:1950
VPAPI VOID NTAPI VideoPortZeroMemory(IN PVOID Destination, IN ULONG Length)
LONG VP_STATUS
Definition: video.h:153
VPAPI BOOLEAN NTAPI VideoPortDDCMonitorHelper(IN PVOID HwDeviceExtension, IN PVOID DDCControl, IN OUT PUCHAR EdidBuffer, IN ULONG EdidBufferSize)
VPAPI VOID __cdecl VideoPortDebugPrint(IN VIDEO_DEBUG_LEVEL DebugPrintLevel, IN PSTR DebugMessage, IN ...)
enum _VIDEO_CHILD_TYPE * PVIDEO_CHILD_TYPE
@ Monitor
Definition: video.h:270
#define VIDEO_ENUM_MORE_DEVICES
Definition: video.h:139
struct _DDC_CONTROL DDC_CONTROL
VIDEO_PORT_INT10_INTERFACE Int10Interface
Definition: vbemp.h:194
ULONG CurrentChildIndex
Definition: vbemp.h:210
IN UCHAR EdidSegment
Definition: video.h:700
IN ULONG Size
Definition: video.h:698
IN I2C_CALLBACKS I2CCallbacks
Definition: video.h:699
IN PVIDEO_READ_CLOCK_LINE ReadClockLine
Definition: video.h:372
IN PVIDEO_WRITE_DATA_LINE WriteDataLine
Definition: video.h:371
IN PVIDEO_READ_DATA_LINE ReadDataLine
Definition: video.h:373
IN PVIDEO_WRITE_CLOCK_LINE WriteClockLine
Definition: video.h:370
OUT PINT10_CALL_BIOS Int10CallBios
Definition: video.h:782
uint32_t * PULONG
Definition: typedefs.h:59
#define NTAPI
Definition: typedefs.h:36
#define IN
Definition: typedefs.h:39
unsigned char * PUCHAR
Definition: typedefs.h:53
uint32_t ULONG
Definition: typedefs.h:59
#define OUT
Definition: typedefs.h:40
#define VBE_SUCCESS
Definition: vbemp.h:95
#define VBE_GETRETURNCODE(x)
Definition: vbemp.h:100
#define VBE_DDC_READ_EDID
Definition: vbemp.h:73
#define VBE_DDC_BEGIN_SCL_SDA_CONTROL
Definition: vbemp.h:75
#define MAX_SIZE_OF_EDID
Definition: vbemp.h:187
#define VBE_DDC_WRITE_SDA_DATA_LINE
Definition: vbemp.h:78
#define VBE_DDC_REPORT_CAPABILITIES
Definition: vbemp.h:74
#define VBE_DDC_READ_SDA_DATA_LINE
Definition: vbemp.h:80
#define VBE_DDC_END_SCL_SDA_CONTROL
Definition: vbemp.h:76
#define VBE_DDC
Definition: vbemp.h:67
#define VBE_DDC_READ_SCL_CLOCK_LINE
Definition: vbemp.h:79
#define VBE_DDC_WRITE_SCL_CLOCK_LINE
Definition: vbemp.h:77
struct VBE_DEVICE_EXTENSION * PVBE_DEVICE_EXTENSION
int ret
_Must_inspect_result_ _In_ WDFCHILDLIST _In_ PWDF_CHILD_LIST_ITERATOR _Out_ WDFDEVICE _Inout_opt_ PWDF_CHILD_RETRIEVE_INFO Info
Definition: wdfchildlist.h:690
unsigned char UCHAR
Definition: xmlstorage.h:181