[hpoussin] 22237: Read EDID information from screen (if possible) in HwGetVideoChildDescriptor. Still doesn't do anything useful with it, but that's a start ; )
5 Jun
2006
5 Jun
'06
4:31 p.m.
Author: hpoussin
Date: Mon Jun 5 20:31:24 2006
New Revision: 22237
URL: http://svn.reactos.ru/svn/reactos?rev=22237&view=rev
Log:
Read EDID information from screen (if possible) in HwGetVideoChildDescriptor.
Still doesn't do anything useful with it, but that's a start ;)
Added:
trunk/reactos/drivers/video/miniport/vbe/edid.c (with props)
Modified:
trunk/reactos/drivers/video/miniport/vbe/vbemp.c
trunk/reactos/drivers/video/miniport/vbe/vbemp.h
trunk/reactos/drivers/video/miniport/vbe/vbemp.rbuild
Added: trunk/reactos/drivers/video/miniport/vbe/edid.c
URL:
http://svn.reactos.ru/svn/reactos/trunk/reactos/drivers/video/miniport/vbe/…
==============================================================================
--- trunk/reactos/drivers/video/miniport/vbe/edid.c (added)
+++ trunk/reactos/drivers/video/miniport/vbe/edid.c Mon Jun 5 20:31:24 2006
@@ -1,0 +1,251 @@
+/*
+ * ReactOS VBE EDID management
+ *
+ * Copyright (C) 2006 Hervé Poussineau
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+/* INCLUDES *******************************************************************/
+
+#include "vbemp.h"
+
+/* PUBLIC AND PRIVATE FUNCTIONS ***********************************************/
+
+static VOID NTAPI
+VBEWriteClockLine(
+ PVOID HwDeviceExtension,
+ UCHAR data)
+{
+ INT10_BIOS_ARGUMENTS BiosRegisters;
+ PVBE_DEVICE_EXTENSION VBEDeviceExtension =
+ (PVBE_DEVICE_EXTENSION)HwDeviceExtension;
+
+ VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
+ BiosRegisters.Eax = VBE_DDC;
+ BiosRegisters.Ebx = VBE_DDC_WRITE_SCL_CLOCK_LINE;
+ BiosRegisters.Ecx = data;
+ VBEDeviceExtension->Int10Interface.Int10CallBios(
+ VBEDeviceExtension->Int10Interface.Context,
+ &BiosRegisters);
+}
+
+static VOID NTAPI
+VBEWriteDataLine(
+ PVOID HwDeviceExtension,
+ UCHAR data)
+{
+ INT10_BIOS_ARGUMENTS BiosRegisters;
+ PVBE_DEVICE_EXTENSION VBEDeviceExtension =
+ (PVBE_DEVICE_EXTENSION)HwDeviceExtension;
+
+ VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
+ BiosRegisters.Eax = VBE_DDC;
+ BiosRegisters.Ebx = VBE_DDC_WRITE_SDA_DATA_LINE;
+ BiosRegisters.Ecx = data;
+ VBEDeviceExtension->Int10Interface.Int10CallBios(
+ VBEDeviceExtension->Int10Interface.Context,
+ &BiosRegisters);
+}
+
+static BOOLEAN NTAPI
+VBEReadClockLine(
+ PVOID HwDeviceExtension)
+{
+ INT10_BIOS_ARGUMENTS BiosRegisters;
+ PVBE_DEVICE_EXTENSION VBEDeviceExtension =
+ (PVBE_DEVICE_EXTENSION)HwDeviceExtension;
+
+ VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
+ BiosRegisters.Eax = VBE_DDC;
+ BiosRegisters.Ebx = VBE_DDC_READ_SCL_CLOCK_LINE;
+ VBEDeviceExtension->Int10Interface.Int10CallBios(
+ VBEDeviceExtension->Int10Interface.Context,
+ &BiosRegisters);
+
+ return BiosRegisters.Edx;
+}
+
+static BOOLEAN NTAPI
+VBEReadDataLine(
+ PVOID HwDeviceExtension)
+{
+ INT10_BIOS_ARGUMENTS BiosRegisters;
+ PVBE_DEVICE_EXTENSION VBEDeviceExtension =
+ (PVBE_DEVICE_EXTENSION)HwDeviceExtension;
+
+ VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
+ BiosRegisters.Eax = VBE_DDC;
+ BiosRegisters.Ebx = VBE_DDC_READ_SDA_DATA_LINE;
+ VBEDeviceExtension->Int10Interface.Int10CallBios(
+ VBEDeviceExtension->Int10Interface.Context,
+ &BiosRegisters);
+
+ return BiosRegisters.Edx;
+}
+
+static BOOLEAN
+VBEReadEdidUsingSCI(
+ PVOID HwDeviceExtension,
+ PVBE_EDID Edid)
+{
+ INT10_BIOS_ARGUMENTS BiosRegisters;
+ PVBE_DEVICE_EXTENSION VBEDeviceExtension =
+ (PVBE_DEVICE_EXTENSION)HwDeviceExtension;
+ DDC_CONTROL DDCControl;
+ BOOLEAN ret;
+
+ VideoPortDebugPrint(Trace, "VBEMP: VBEReadEdidUsingSCI() called\n");
+
+ /*
+ * Check if graphic card support I²C interface
+ */
+ VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
+ BiosRegisters.Eax = VBE_DDC;
+ BiosRegisters.Ebx = VBE_DDC_REPORT_CAPABILITIES;
+ VBEDeviceExtension->Int10Interface.Int10CallBios(
+ VBEDeviceExtension->Int10Interface.Context,
+ &BiosRegisters);
+ if (BiosRegisters.Eax != VBE_SUCCESS)
+ return FALSE;
+ VideoPortDebugPrint(Info, "VBEMP: VBE/SCI version %x\n",
BiosRegisters.Ecx);
+ if ((BiosRegisters.Ebx & 0xF) != 0xF)
+ return FALSE;
+
+ /*
+ * Enable I²C interface
+ */
+ VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
+ BiosRegisters.Eax = VBE_DDC;
+ BiosRegisters.Ebx = VBE_DDC_BEGIN_SCL_SDA_CONTROL;
+ VBEDeviceExtension->Int10Interface.Int10CallBios(
+ VBEDeviceExtension->Int10Interface.Context,
+ &BiosRegisters);
+ if (BiosRegisters.Eax != VBE_SUCCESS)
+ return FALSE;
+
+ /*
+ * Read EDID information
+ */
+ DDCControl.Size = sizeof(DDC_CONTROL);
+ DDCControl.I2CCallbacks.WriteClockLine = VBEWriteClockLine;
+ DDCControl.I2CCallbacks.WriteDataLine = VBEWriteDataLine;
+ DDCControl.I2CCallbacks.ReadClockLine = VBEReadClockLine;
+ DDCControl.I2CCallbacks.ReadDataLine = VBEReadDataLine;
+ DDCControl.EdidSegment = 0;
+ ret = VideoPortDDCMonitorHelper(
+ HwDeviceExtension,
+ &DDCControl,
+ (PUCHAR)&Edid,
+ sizeof(VBE_EDID));
+
+ /*
+ * Disable I²C interface
+ */
+ VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
+ BiosRegisters.Eax = VBE_DDC;
+ BiosRegisters.Ebx = VBE_DDC_END_SCL_SDA_CONTROL;
+ VBEDeviceExtension->Int10Interface.Int10CallBios(
+ VBEDeviceExtension->Int10Interface.Context,
+ &BiosRegisters);
+ /* Ignore the possible error, as we did our best to prevent problems */
+
+ return ret;
+}
+
+static BOOLEAN
+VBEReadEdid(
+ PVBE_DEVICE_EXTENSION VBEDeviceExtension,
+ PVBE_EDID Edid)
+{
+ INT10_BIOS_ARGUMENTS BiosRegisters;
+
+ VideoPortDebugPrint(Trace, "VBEMP: VBEReadEdid() called\n");
+
+ /*
+ * Directly read EDID information
+ */
+ VideoPortZeroMemory(&BiosRegisters, sizeof(BiosRegisters));
+ BiosRegisters.Eax = VBE_DDC;
+ BiosRegisters.Ebx = VBE_DDC_READ_EDID;
+ BiosRegisters.Edx = 1;
+ BiosRegisters.Edi = VBEDeviceExtension->TrampolineMemoryOffset;
+ BiosRegisters.SegEs = VBEDeviceExtension->TrampolineMemorySegment;
+ VBEDeviceExtension->Int10Interface.Int10CallBios(
+ VBEDeviceExtension->Int10Interface.Context,
+ &BiosRegisters);
+
+ if (BiosRegisters.Eax != VBE_SUCCESS)
+ return FALSE;
+
+ /*
+ * Copy the EDID information to our buffer
+ */
+ VBEDeviceExtension->Int10Interface.Int10ReadMemory(
+ VBEDeviceExtension->Int10Interface.Context,
+ VBEDeviceExtension->TrampolineMemorySegment,
+ VBEDeviceExtension->TrampolineMemoryOffset,
+ Edid,
+ sizeof(VBE_EDID));
+
+ return TRUE;
+}
+
+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)
+{
+ PVBE_DEVICE_EXTENSION VBEDeviceExtension =
+ (PVBE_DEVICE_EXTENSION)HwDeviceExtension;
+ VBE_EDID Edid;
+
+ /*
+ * We are called very early in device initialization, even before
+ * VBEInitialize is called. So, our Int10 interface is not set.
+ * Ignore this call, we will trigger it ourselves later.
+ */
+ if (VBEDeviceExtension->Int10Interface.Size == 0)
+ return VIDEO_ENUM_NO_MORE_DEVICES;
+
+ /*
+ * Try to read EDID information using 2 different methods.
+ */
+ if (VBEReadEdid(HwDeviceExtension, &Edid))
+ {
+ VideoPortDebugPrint(Info, "VBEMP: EDID information read directly\n");
+ }
+ else if (VBEReadEdidUsingSCI(HwDeviceExtension, &Edid))
+ {
+ VideoPortDebugPrint(Info, "VBEMP: EDID information read using I²C\n");
+ }
+ else
+ {
+ VideoPortDebugPrint(Warn, "VBEMP: Unable to read EDID information\n");
+ return VIDEO_ENUM_NO_MORE_DEVICES;
+ }
+
+ /*
+ * Process the EDID data.
+ */
+ /* FIXME */
+ VideoPortDebugPrint(Error, "VBEMP: Need to parse EDID information\n");
+ return VIDEO_ENUM_NO_MORE_DEVICES;
+}
Propchange: trunk/reactos/drivers/video/miniport/vbe/edid.c
------------------------------------------------------------------------------
svn:eol-style = native
Propchange: trunk/reactos/drivers/video/miniport/vbe/edid.c
------------------------------------------------------------------------------
svn:keywords = author date id revision
Modified: trunk/reactos/drivers/video/miniport/vbe/vbemp.c
URL:
http://svn.reactos.ru/svn/reactos/trunk/reactos/drivers/video/miniport/vbe/…
==============================================================================
--- trunk/reactos/drivers/video/miniport/vbe/vbemp.c (original)
+++ trunk/reactos/drivers/video/miniport/vbe/vbemp.c Mon Jun 5 20:31:24 2006
@@ -44,6 +44,7 @@
InitData.HwResetHw = VBEResetHw;
InitData.HwGetPowerState = VBEGetPowerState;
InitData.HwSetPowerState = VBESetPowerState;
+ InitData.HwGetVideoChildDescriptor = VBEGetVideoChildDescriptor;
InitData.HwDeviceExtensionSize = sizeof(VBE_DEVICE_EXTENSION);
return VideoPortInitialize(Context1, Context2, &InitData, NULL);
@@ -377,7 +378,7 @@
VBESortModes(VBEDeviceExtension);
/*
- * Print the supported video modes when NDEBUG is not set.
+ * Print the supported video modes.
*/
for (CurrentMode = 0;
@@ -389,6 +390,11 @@
VBEDeviceExtension->ModeInfo[CurrentMode].YResolution,
VBEDeviceExtension->ModeInfo[CurrentMode].BitsPerPixel);
}
+
+ /*
+ * Enumerate our children.
+ */
+ VideoPortEnumerateChildren(HwDeviceExtension, NULL);
return TRUE;
}
Modified: trunk/reactos/drivers/video/miniport/vbe/vbemp.h
URL:
http://svn.reactos.ru/svn/reactos/trunk/reactos/drivers/video/miniport/vbe/…
==============================================================================
--- trunk/reactos/drivers/video/miniport/vbe/vbemp.h (original)
+++ trunk/reactos/drivers/video/miniport/vbe/vbemp.h Mon Jun 5 20:31:24 2006
@@ -71,6 +71,20 @@
#define VBE_AUDIO_INTERFACE_EXTENSIONS 0x4F12
#define VBE_OEM_EXTENSIONS 0x4F13
#define VBE_DISPLAY_DATA_CHANNEL 0x4F14
+#define VBE_DDC 0x4F15
+
+/*
+ * VBE DDC Sub-Functions
+ */
+
+#define VBE_DDC_READ_EDID 0x01
+#define VBE_DDC_REPORT_CAPABILITIES 0x10
+#define VBE_DDC_BEGIN_SCL_SDA_CONTROL 0x11
+#define VBE_DDC_END_SCL_SDA_CONTROL 0x12
+#define VBE_DDC_WRITE_SCL_CLOCK_LINE 0x13
+#define VBE_DDC_WRITE_SDA_DATA_LINE 0x14
+#define VBE_DDC_READ_SCL_CLOCK_LINE 0x15
+#define VBE_DDC_READ_SDA_DATA_LINE 0x16
/*
* VBE Video Mode Information Definitions
@@ -175,6 +189,11 @@
CHAR Reserved4[189];
} VBE_MODEINFO, *PVBE_MODEINFO;
+typedef struct
+{
+ UCHAR Reserved[128];
+} VBE_EDID, *PVBE_EDID;
+
#include <poppack.h>
typedef struct
@@ -196,6 +215,18 @@
USHORT CurrentMode;
} VBE_DEVICE_EXTENSION, *PVBE_DEVICE_EXTENSION;
+/* edid.c */
+
+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);
+
+/* vbemp.c */
VP_STATUS STDCALL
VBEFindAdapter(
IN PVOID HwDeviceExtension,
Modified: trunk/reactos/drivers/video/miniport/vbe/vbemp.rbuild
URL:
http://svn.reactos.ru/svn/reactos/trunk/reactos/drivers/video/miniport/vbe/…
==============================================================================
--- trunk/reactos/drivers/video/miniport/vbe/vbemp.rbuild (original)
+++ trunk/reactos/drivers/video/miniport/vbe/vbemp.rbuild Mon Jun 5 20:31:24 2006
@@ -2,6 +2,7 @@
<include base="vbemp">.</include>
<define name="__USE_W32API" />
<library>videoprt</library>
+ <file>edid.c</file>
<file>vbemp.c</file>
<file>vbemp.rc</file>
</module>
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