From e07a1266f0b6d1079927591ebd1e603dc2c17c00 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fran=C3=A7ois=20Revol?= <revol@free.fr>
Date: Sun, 3 Aug 2008 01:40:57 +0000
Subject: [PATCH] Start of boot video mode support. Not finished.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26749 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/system/boot/platform/atari_m68k/video.cpp | 99 +++++++++++++++++++
 src/system/boot/platform/atari_m68k/video.h   |  7 ++
 2 files changed, 106 insertions(+)

diff --git a/src/system/boot/platform/atari_m68k/video.cpp b/src/system/boot/platform/atari_m68k/video.cpp
index fd7c7045a7..c909b641fa 100644
--- a/src/system/boot/platform/atari_m68k/video.cpp
+++ b/src/system/boot/platform/atari_m68k/video.cpp
@@ -16,6 +16,7 @@
 #include <boot/kernel_args.h>
 #include <util/list.h>
 #include <drivers/driver_settings.h>
+#include <GraphicsDefs.h>
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -32,6 +33,103 @@
 
 // XXX: use falcon video monitor detection and build possible mode list there...
 
+// which API to use to handle this mode
+// cf. http://toshyp.atari.org/004.htm
+enum {
+	MODETYPE_XBIOS_ST,
+	MODETYPE_XBIOS_TT,
+	MODETYPE_XBIOS_FALCON,
+	MODETYPE_CENTSCREEN,
+	MODETYPE_CRAZYDOTS,
+	MODETYPE_CT60,
+	MODETYPE_NATFEAT
+};
+
+class ModeAPI {
+public:
+	ModeAPI(const char *name) { fName = name; };
+	~ModeAPI() {};
+	const char *Name() const { return fName; };
+	virtual status_t Enumerate() = 0;
+	virtual status_t Get(struct video_mode *mode) = 0;
+	virtual status_t Set(const struct video_mode *mode) = 0;
+private:
+	const char *fName;
+};
+
+struct video_mode {
+	list_link	link;
+	ModeAPI		*ops;
+	color_space	space;
+	uint16		mode;
+	uint16		width, height, bits_per_pixel;
+	uint32		bytes_per_row;
+};
+
+static struct list sModeList;
+static video_mode *sMode, *sDefaultMode;
+
+
+//	#pragma mark - Falcon XBIOS API
+
+class FalconModeAPI : public ModeAPI {
+public:
+	FalconModeAPI() : ModeAPI("Falcon XBIOS") {};
+	~FalconModeAPI() {};
+	virtual status_t Enumerate();
+	virtual status_t Get(struct video_mode *mode);
+	virtual status_t Set(const struct video_mode *mode);
+};
+
+
+status_t
+FalconModeAPI::Enumerate()
+{
+	int16 monitor;
+	monitor = VgetMonitor();
+	switch (monitor) {
+		case 0:
+			panic("Monochrome ??");
+			break;
+		//case 4 & 5: check for CT60
+		case 1:
+		default:
+			dprintf("monitor type %d\n", monitor);
+			break;
+	}
+	return ENODEV;
+}
+
+
+status_t
+FalconModeAPI::Get(struct video_mode *mode)
+{
+	int16 m = VsetMode(VM_INQUIRE);
+	int bpp;
+	int width = 320;
+	if (m < 0)
+		return B_ERROR;
+	bpp = 1 << (m & 0x0007);
+	if (m & 0x0008)
+		width *= 2;
+	bool vga = (m & 0x0010) != 0;
+	bool pal = (m & 0x0020) != 0;
+	bool overscan = (m & 0x0040) != 0;
+	bool st = (m & 0x0080) != 0;
+	bool interlace = (m & 0x0100) != 0;
+	return ENODEV;
+}
+
+
+status_t
+FalconModeAPI::Set(const struct video_mode *mode)
+{
+	return ENODEV;
+}
+
+
+static FalconModeAPI sFalconModeAPI;
+
 
 //	#pragma mark -
 
@@ -133,6 +231,7 @@ platform_init_video(void)
 	// ToDo: implement me
 	dprintf("current video mode: \n");
 	dprintf("Vsetmode(-1): 0x%08x\n", VsetMode(VM_INQUIRE));
+	sFalconModeAPI.Enumerate();
 	return B_OK;
 }
 
diff --git a/src/system/boot/platform/atari_m68k/video.h b/src/system/boot/platform/atari_m68k/video.h
index 37cd88782c..bd494613b2 100644
--- a/src/system/boot/platform/atari_m68k/video.h
+++ b/src/system/boot/platform/atari_m68k/video.h
@@ -8,6 +8,13 @@
 
 #include <SupportDefs.h>
 
+/* 4CCs for custom colorspaces */
+// XXX: move to kernel/app_server header ?
+#define ATARI_IBP1 'IBP1'
+#define ATARI_IBP2 'IBP2'
+#define ATARI_IBP4 'IBP4'
+#define ATARI_IBP8 'IBP8'
+
 
 class Menu;
 class MenuItem;