From 86809a6d6acb6a4d9813c9acbe9663555179c14d Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Wed, 15 Oct 2008 22:03:43 -0700
Subject: [PATCH] --- yaml --- r: 114860 b: refs/heads/master c:
 7c08c9ae0c145807c0dae4a55f240fa3d4fd5262 h: refs/heads/master v: v3

---
 [refs]                       |   2 +-
 trunk/drivers/video/Kconfig  |  15 +-
 trunk/drivers/video/Makefile |   1 -
 trunk/drivers/video/efifb.c  | 191 +++++++++++++++++-
 trunk/drivers/video/imacfb.c | 376 -----------------------------------
 5 files changed, 185 insertions(+), 400 deletions(-)

diff --git a/[refs] b/[refs]
index adca23b6c92f..d1b6991ac161 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f928ac0a9810d46c8ba3bde7c969984340da9f5d
+refs/heads/master: 7c08c9ae0c145807c0dae4a55f240fa3d4fd5262
diff --git a/trunk/drivers/video/Kconfig b/trunk/drivers/video/Kconfig
index e63e5648e0a6..3b296e410f91 100644
--- a/trunk/drivers/video/Kconfig
+++ b/trunk/drivers/video/Kconfig
@@ -689,23 +689,14 @@ config FB_VESA
 
 config FB_EFI
 	bool "EFI-based Framebuffer Support"
-	depends on (FB = y) && X86
-	select FB_CFB_FILLRECT
-	select FB_CFB_COPYAREA
-	select FB_CFB_IMAGEBLIT
-	help
-	  This is the EFI frame buffer device driver. If the firmware on
-	  your platform is UEFI2.0, select Y to add support for
-	  Graphics Output Protocol for early console messages to appear.
-
-config FB_IMAC
-	bool "Intel-based Macintosh Framebuffer Support"
 	depends on (FB = y) && X86 && EFI
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
 	help
-	  This is the frame buffer device driver for the Intel-based Macintosh
+	  This is the EFI frame buffer device driver. If the firmware on
+	  your platform is EFI 1.10 or UEFI 2.0, select Y to add support for
+	  using the EFI framebuffer as your console.
 
 config FB_N411
        tristate "N411 Apollo/Hecuba devkit support"
diff --git a/trunk/drivers/video/Makefile b/trunk/drivers/video/Makefile
index dcae8d402fb2..2bc94d8eb3c8 100644
--- a/trunk/drivers/video/Makefile
+++ b/trunk/drivers/video/Makefile
@@ -125,7 +125,6 @@ obj-$(CONFIG_FB_CARMINE)          += carminefb.o
 # Platform or fallback drivers go here
 obj-$(CONFIG_FB_UVESA)            += uvesafb.o
 obj-$(CONFIG_FB_VESA)             += vesafb.o
-obj-$(CONFIG_FB_IMAC)             += imacfb.o
 obj-$(CONFIG_FB_EFI)              += efifb.o
 obj-$(CONFIG_FB_VGA16)            += vga16fb.o
 obj-$(CONFIG_FB_OF)               += offb.o
diff --git a/trunk/drivers/video/efifb.c b/trunk/drivers/video/efifb.c
index bd779ae44b1e..daf9b81878a4 100644
--- a/trunk/drivers/video/efifb.c
+++ b/trunk/drivers/video/efifb.c
@@ -12,6 +12,7 @@
 #include <linux/fb.h>
 #include <linux/platform_device.h>
 #include <linux/screen_info.h>
+#include <linux/dmi.h>
 
 #include <video/vga.h>
 
@@ -33,6 +34,105 @@ static struct fb_fix_screeninfo efifb_fix __initdata = {
 	.visual			= FB_VISUAL_TRUECOLOR,
 };
 
+enum {
+	M_I17,		/* 17-Inch iMac */
+	M_I20,		/* 20-Inch iMac */
+	M_I20_SR,	/* 20-Inch iMac (Santa Rosa) */
+	M_I24,		/* 24-Inch iMac */
+	M_MINI,		/* Mac Mini */
+	M_MB,		/* MacBook */
+	M_MB_2,		/* MacBook, 2nd rev. */
+	M_MB_3,		/* MacBook, 3rd rev. */
+	M_MB_SR,	/* MacBook, 2nd gen, (Santa Rosa) */
+	M_MBA,		/* MacBook Air */
+	M_MBP,		/* MacBook Pro */
+	M_MBP_2,	/* MacBook Pro 2nd gen */
+	M_MBP_SR,	/* MacBook Pro (Santa Rosa) */
+	M_MBP_4,	/* MacBook Pro, 4th gen */
+	M_UNKNOWN	/* placeholder */
+};
+
+static struct efifb_dmi_info {
+	char *optname;
+	unsigned long base;
+	int stride;
+	int width;
+	int height;
+} dmi_list[] = {
+	[M_I17] = { "i17", 0x80010000, 1472 * 4, 1440, 900 },
+	[M_I20] = { "i20", 0x80010000, 1728 * 4, 1680, 1050 }, /* guess */
+	[M_I20_SR] = { "imac7", 0x40010000, 1728 * 4, 1680, 1050 },
+	[M_I24] = { "i24", 0x80010000, 2048 * 4, 1920, 1200 }, /* guess */
+	[M_MINI]= { "mini", 0x80000000, 2048 * 4, 1024, 768 },
+	[M_MB] = { "macbook", 0x80000000, 2048 * 4, 1280, 800 },
+	[M_MBA] = { "mba", 0x80000000, 2048 * 4, 1280, 800 },
+	[M_MBP] = { "mbp", 0x80010000, 1472 * 4, 1440, 900 },
+	[M_MBP_2] = { "mbp2", 0, 0, 0, 0 }, /* placeholder */
+	[M_MBP_SR] = { "mbp3", 0x80030000, 2048 * 4, 1440, 900 },
+	[M_MBP_4] = { "mbp4", 0xc0060000, 2048 * 4, 1920, 1200 },
+	[M_UNKNOWN] = { NULL, 0, 0, 0, 0 }
+};
+
+static int set_system(const struct dmi_system_id *id);
+
+#define EFIFB_DMI_SYSTEM_ID(vendor, name, enumid)		\
+	{ set_system, name, {					\
+		DMI_MATCH(DMI_BIOS_VENDOR, vendor),		\
+		DMI_MATCH(DMI_PRODUCT_NAME, name) },		\
+	  &dmi_list[enumid] }
+
+static struct dmi_system_id __initdata dmi_system_table[] = {
+	EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac4,1", M_I17),
+	/* At least one of these two will be right; maybe both? */
+	EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac5,1", M_I20),
+	EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac5,1", M_I20),
+	/* At least one of these two will be right; maybe both? */
+	EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac6,1", M_I24),
+	EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac6,1", M_I24),
+	EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac7,1", M_I20_SR),
+	EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "Macmini1,1", M_MINI),
+	EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook1,1", M_MB),
+	/* At least one of these two will be right; maybe both? */
+	EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook2,1", M_MB),
+	EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook2,1", M_MB),
+	/* At least one of these two will be right; maybe both? */
+	EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook3,1", M_MB),
+	EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook3,1", M_MB),
+	EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook4,1", M_MB),
+	EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir1,1", M_MBA),
+	EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro1,1", M_MBP),
+	EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,1", M_MBP_2),
+	EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro2,1", M_MBP_2),
+	EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro3,1", M_MBP_SR),
+	EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro3,1", M_MBP_SR),
+	EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro4,1", M_MBP_4),
+	{},
+};
+
+static int set_system(const struct dmi_system_id *id)
+{
+	struct efifb_dmi_info *info = id->driver_data;
+	if (info->base == 0)
+		return -ENODEV;
+
+	printk(KERN_INFO "efifb: dmi detected %s - framebuffer at %p "
+			 "(%dx%d, stride %d)\n", id->ident,
+			 (void *)info->base, info->width, info->height,
+			 info->stride);
+
+	/* Trust the bootloader over the DMI tables */
+	if (screen_info.lfb_base == 0)
+		screen_info.lfb_base = info->base;
+	if (screen_info.lfb_linelength == 0)
+		screen_info.lfb_linelength = info->stride;
+	if (screen_info.lfb_width == 0)
+		screen_info.lfb_width = info->width;
+	if (screen_info.lfb_height == 0)
+		screen_info.lfb_height = info->height;
+
+	return 0;
+}
+
 static int efifb_setcolreg(unsigned regno, unsigned red, unsigned green,
 			   unsigned blue, unsigned transp,
 			   struct fb_info *info)
@@ -67,6 +167,38 @@ static struct fb_ops efifb_ops = {
 	.fb_imageblit	= cfb_imageblit,
 };
 
+static int __init efifb_setup(char *options)
+{
+	char *this_opt;
+	int i;
+
+	if (!options || !*options)
+		return 0;
+
+	while ((this_opt = strsep(&options, ",")) != NULL) {
+		if (!*this_opt) continue;
+
+		for (i = 0; i < M_UNKNOWN; i++) {
+			if (!strcmp(this_opt, dmi_list[i].optname) &&
+					dmi_list[i].base != 0) {
+				screen_info.lfb_base = dmi_list[i].base;
+				screen_info.lfb_linelength = dmi_list[i].stride;
+				screen_info.lfb_width = dmi_list[i].width;
+				screen_info.lfb_height = dmi_list[i].height;
+			}
+		}
+		if (!strncmp(this_opt, "base:", 5))
+			screen_info.lfb_base = simple_strtoul(this_opt+5, NULL, 0);
+		else if (!strncmp(this_opt, "stride:", 7))
+			screen_info.lfb_linelength = simple_strtoul(this_opt+7, NULL, 0) * 4;
+		else if (!strncmp(this_opt, "height:", 7))
+			screen_info.lfb_height = simple_strtoul(this_opt+7, NULL, 0);
+		else if (!strncmp(this_opt, "width:", 6))
+			screen_info.lfb_width = simple_strtoul(this_opt+6, NULL, 0);
+	}
+	return 0;
+}
+
 static int __init efifb_probe(struct platform_device *dev)
 {
 	struct fb_info *info;
@@ -74,6 +206,26 @@ static int __init efifb_probe(struct platform_device *dev)
 	unsigned int size_vmode;
 	unsigned int size_remap;
 	unsigned int size_total;
+	int request_succeeded = 0;
+
+	printk(KERN_INFO "efifb: probing for efifb\n");
+
+	if (!screen_info.lfb_depth)
+		screen_info.lfb_depth = 32;
+	if (!screen_info.pages)
+		screen_info.pages = 1;
+
+	/* just assume they're all unset if any are */
+	if (!screen_info.blue_size) {
+		screen_info.blue_size = 8;
+		screen_info.blue_pos = 0;
+		screen_info.green_size = 8;
+		screen_info.green_pos = 8;
+		screen_info.red_size = 8;
+		screen_info.red_pos = 16;
+		screen_info.rsvd_size = 8;
+		screen_info.rsvd_pos = 24;
+	}
 
 	efifb_fix.smem_start = screen_info.lfb_base;
 	efifb_defined.bits_per_pixel = screen_info.lfb_depth;
@@ -98,21 +250,25 @@ static int __init efifb_probe(struct platform_device *dev)
 	 *                 option to simply use size_total as that
 	 *                 wastes plenty of kernel address space. */
 	size_remap  = size_vmode * 2;
-	if (size_remap < size_vmode)
-		size_remap = size_vmode;
 	if (size_remap > size_total)
 		size_remap = size_total;
+	if (size_remap % PAGE_SIZE)
+		size_remap += PAGE_SIZE - (size_remap % PAGE_SIZE);
 	efifb_fix.smem_len = size_remap;
 
-	if (!request_mem_region(efifb_fix.smem_start, size_total, "efifb"))
+	if (request_mem_region(efifb_fix.smem_start, size_remap, "efifb")) {
+		request_succeeded = 1;
+	} else {
 		/* We cannot make this fatal. Sometimes this comes from magic
 		   spaces our resource handlers simply don't know about */
 		printk(KERN_WARNING
 		       "efifb: cannot reserve video memory at 0x%lx\n",
 			efifb_fix.smem_start);
+	}
 
 	info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev);
 	if (!info) {
+		printk(KERN_ERR "efifb: cannot allocate framebuffer\n");
 		err = -ENOMEM;
 		goto err_release_mem;
 	}
@@ -125,7 +281,7 @@ static int __init efifb_probe(struct platform_device *dev)
 				"0x%x @ 0x%lx\n",
 			efifb_fix.smem_len, efifb_fix.smem_start);
 		err = -EIO;
-		goto err_unmap;
+		goto err_release_fb;
 	}
 
 	printk(KERN_INFO "efifb: framebuffer at 0x%lx, mapped to 0x%p, "
@@ -178,25 +334,27 @@ static int __init efifb_probe(struct platform_device *dev)
 	info->fix = efifb_fix;
 	info->flags = FBINFO_FLAG_DEFAULT;
 
-	if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
-		err = -ENOMEM;
+	if ((err = fb_alloc_cmap(&info->cmap, 256, 0)) < 0) {
+		printk(KERN_ERR "efifb: cannot allocate colormap\n");
 		goto err_unmap;
 	}
-	if (register_framebuffer(info) < 0) {
-		err = -EINVAL;
+	if ((err = register_framebuffer(info)) < 0) {
+		printk(KERN_ERR "efifb: cannot register framebuffer\n");
 		goto err_fb_dealoc;
 	}
 	printk(KERN_INFO "fb%d: %s frame buffer device\n",
-	       info->node, info->fix.id);
+		info->node, info->fix.id);
 	return 0;
 
 err_fb_dealoc:
 	fb_dealloc_cmap(&info->cmap);
 err_unmap:
 	iounmap(info->screen_base);
+err_release_fb:
 	framebuffer_release(info);
 err_release_mem:
-	release_mem_region(efifb_fix.smem_start, size_total);
+	if (request_succeeded)
+		release_mem_region(efifb_fix.smem_start, size_total);
 	return err;
 }
 
@@ -214,9 +372,22 @@ static struct platform_device efifb_device = {
 static int __init efifb_init(void)
 {
 	int ret;
+	char *option = NULL;
 
 	if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
 		return -ENODEV;
+	dmi_check_system(dmi_system_table);
+
+	if (fb_get_options("efifb", &option))
+		return -ENODEV;
+	efifb_setup(option);
+
+	/* We don't get linelength from UGA Draw Protocol, only from
+	 * EFI Graphics Protocol.  So if it's not in DMI, and it's not
+	 * passed in from the user, we really can't use the framebuffer.
+	 */
+	if (!screen_info.lfb_linelength)
+		return -ENODEV;
 
 	ret = platform_driver_register(&efifb_driver);
 
diff --git a/trunk/drivers/video/imacfb.c b/trunk/drivers/video/imacfb.c
index 9366ef2bb5f7..e69de29bb2d1 100644
--- a/trunk/drivers/video/imacfb.c
+++ b/trunk/drivers/video/imacfb.c
@@ -1,376 +0,0 @@
-/*
- * framebuffer driver for Intel Based Mac's
- *
- * (c) 2006 Edgar Hucek <gimli@dark-green.com>
- * Original imac driver written by Gerd Knorr <kraxel@goldbach.in-berlin.de>
- *
- */
-
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fb.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/screen_info.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/dmi.h>
-#include <linux/efi.h>
-
-#include <asm/io.h>
-
-#include <video/vga.h>
-
-typedef enum _MAC_TYPE {
-	M_I17,
-	M_I20,
-	M_MINI,
-	M_MACBOOK,
-	M_UNKNOWN
-} MAC_TYPE;
-
-/* --------------------------------------------------------------------- */
-
-static struct fb_var_screeninfo imacfb_defined __initdata = {
-	.activate		= FB_ACTIVATE_NOW,
-	.height			= -1,
-	.width			= -1,
-	.right_margin		= 32,
-	.upper_margin		= 16,
-	.lower_margin		= 4,
-	.vsync_len		= 4,
-	.vmode			= FB_VMODE_NONINTERLACED,
-};
-
-static struct fb_fix_screeninfo imacfb_fix __initdata = {
-	.id			= "IMAC VGA",
-	.type			= FB_TYPE_PACKED_PIXELS,
-	.accel			= FB_ACCEL_NONE,
-	.visual			= FB_VISUAL_TRUECOLOR,
-};
-
-static int inverse;
-static int model		= M_UNKNOWN;
-static int manual_height;
-static int manual_width;
-
-static int set_system(const struct dmi_system_id *id)
-{
-	printk(KERN_INFO "imacfb: %s detected - set system to %ld\n",
-		id->ident, (long)id->driver_data);
-
-	model = (long)id->driver_data;
-
-	return 0;
-}
-
-static struct dmi_system_id __initdata dmi_system_table[] = {
-	{ set_system, "iMac4,1", {
-	  DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
-	  DMI_MATCH(DMI_PRODUCT_NAME,"iMac4,1") }, (void*)M_I17},
-	{ set_system, "MacBookPro1,1", {
-	  DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
-	  DMI_MATCH(DMI_PRODUCT_NAME,"MacBookPro1,1") }, (void*)M_I17},
-	{ set_system, "MacBook1,1", {
-	  DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
-	  DMI_MATCH(DMI_PRODUCT_NAME,"MacBook1,1")}, (void *)M_MACBOOK},
-	{ set_system, "Macmini1,1", {
-	  DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
-	  DMI_MATCH(DMI_PRODUCT_NAME,"Macmini1,1")}, (void *)M_MINI},
-	{},
-};
-
-#define	DEFAULT_FB_MEM	1024*1024*16
-
-/* --------------------------------------------------------------------- */
-
-static int imacfb_setcolreg(unsigned regno, unsigned red, unsigned green,
-			    unsigned blue, unsigned transp,
-			    struct fb_info *info)
-{
-	/*
-	 *  Set a single color register. The values supplied are
-	 *  already rounded down to the hardware's capabilities
-	 *  (according to the entries in the `var' structure). Return
-	 *  != 0 for invalid regno.
-	 */
-
-	if (regno >= info->cmap.len)
-		return 1;
-
-	if (regno < 16) {
-		red   >>= 8;
-		green >>= 8;
-		blue  >>= 8;
-		((u32 *)(info->pseudo_palette))[regno] =
-			(red   << info->var.red.offset)   |
-			(green << info->var.green.offset) |
-			(blue  << info->var.blue.offset);
-	}
-	return 0;
-}
-
-static struct fb_ops imacfb_ops = {
-	.owner		= THIS_MODULE,
-	.fb_setcolreg	= imacfb_setcolreg,
-	.fb_fillrect	= cfb_fillrect,
-	.fb_copyarea	= cfb_copyarea,
-	.fb_imageblit	= cfb_imageblit,
-};
-
-static int __init imacfb_setup(char *options)
-{
-	char *this_opt;
-
-	if (!options || !*options)
-		return 0;
-
-	while ((this_opt = strsep(&options, ",")) != NULL) {
-		if (!*this_opt) continue;
-
-		if (!strcmp(this_opt, "inverse"))
-			inverse = 1;
-		else if (!strcmp(this_opt, "i17"))
-			model = M_I17;
-		else if (!strcmp(this_opt, "i20"))
-			model = M_I20;
-		else if (!strcmp(this_opt, "mini"))
-			model = M_MINI;
-		else if (!strcmp(this_opt, "macbook"))
-			model = M_MACBOOK;
-		else if (!strncmp(this_opt, "height:", 7))
-			manual_height = simple_strtoul(this_opt+7, NULL, 0);
-		else if (!strncmp(this_opt, "width:", 6))
-			manual_width = simple_strtoul(this_opt+6, NULL, 0);
-	}
-	return 0;
-}
-
-static int __init imacfb_probe(struct platform_device *dev)
-{
-	struct fb_info *info;
-	int err;
-	unsigned int size_vmode;
-	unsigned int size_remap;
-	unsigned int size_total;
-
-	screen_info.lfb_depth = 32;
-	screen_info.lfb_size = DEFAULT_FB_MEM / 0x10000;
-	screen_info.pages=1;
-	screen_info.blue_size = 8;
-	screen_info.blue_pos = 0;
-	screen_info.green_size = 8;
-	screen_info.green_pos = 8;
-	screen_info.red_size = 8;
-	screen_info.red_pos = 16;
-	screen_info.rsvd_size = 8;
-	screen_info.rsvd_pos = 24;
-
-	switch (model) {
-	case M_I17:
-		screen_info.lfb_width = 1440;
-		screen_info.lfb_height = 900;
-		screen_info.lfb_linelength = 1472 * 4;
-		screen_info.lfb_base = 0x80010000;
-		break;
-	case M_I20:
-		screen_info.lfb_width = 1680;
-		screen_info.lfb_height = 1050;
-		screen_info.lfb_linelength = 1728 * 4;
-		screen_info.lfb_base = 0x80010000;
-		break;
-	case M_MINI:
-		screen_info.lfb_width = 1024;
-		screen_info.lfb_height = 768;
-		screen_info.lfb_linelength = 2048 * 4;
-		screen_info.lfb_base = 0x80000000;
-		break;
-	case M_MACBOOK:
-		screen_info.lfb_width = 1280;
-		screen_info.lfb_height = 800;
-		screen_info.lfb_linelength = 2048 * 4;
-		screen_info.lfb_base = 0x80000000;
-		break;
- 	}
-
-	/* if the user wants to manually specify height/width,
-	   we will override the defaults */
-	/* TODO: eventually get auto-detection working */
-	if (manual_height > 0)
-		screen_info.lfb_height = manual_height;
-	if (manual_width > 0)
-		screen_info.lfb_width = manual_width;
-
-	imacfb_fix.smem_start = screen_info.lfb_base;
-	imacfb_defined.bits_per_pixel = screen_info.lfb_depth;
-	imacfb_defined.xres = screen_info.lfb_width;
-	imacfb_defined.yres = screen_info.lfb_height;
-	imacfb_fix.line_length = screen_info.lfb_linelength;
-
-	/*   size_vmode -- that is the amount of memory needed for the
-	 *                 used video mode, i.e. the minimum amount of
-	 *                 memory we need. */
-	size_vmode = imacfb_defined.yres * imacfb_fix.line_length;
-
-	/*   size_total -- all video memory we have. Used for
-	 *                 entries, ressource allocation and bounds
-	 *                 checking. */
-	size_total = screen_info.lfb_size * 65536;
-	if (size_total < size_vmode)
-		size_total = size_vmode;
-
-	/*   size_remap -- the amount of video memory we are going to
-	 *                 use for imacfb.  With modern cards it is no
-	 *                 option to simply use size_total as that
-	 *                 wastes plenty of kernel address space. */
-	size_remap  = size_vmode * 2;
-	if (size_remap < size_vmode)
-		size_remap = size_vmode;
-	if (size_remap > size_total)
-		size_remap = size_total;
-	imacfb_fix.smem_len = size_remap;
-
-	if (!request_mem_region(imacfb_fix.smem_start, size_total, "imacfb")) {
-		printk(KERN_WARNING
-		       "imacfb: cannot reserve video memory at 0x%lx\n",
-			imacfb_fix.smem_start);
-		/* We cannot make this fatal. Sometimes this comes from magic
-		   spaces our resource handlers simply don't know about */
-	}
-
-	info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev);
-	if (!info) {
-		err = -ENOMEM;
-		goto err_release_mem;
-	}
-	info->pseudo_palette = info->par;
-	info->par = NULL;
-
-	info->screen_base = ioremap(imacfb_fix.smem_start, imacfb_fix.smem_len);
-	if (!info->screen_base) {
-		printk(KERN_ERR "imacfb: abort, cannot ioremap video memory "
-				"0x%x @ 0x%lx\n",
-			imacfb_fix.smem_len, imacfb_fix.smem_start);
-		err = -EIO;
-		goto err_unmap;
-	}
-
-	printk(KERN_INFO "imacfb: framebuffer at 0x%lx, mapped to 0x%p, "
-	       "using %dk, total %dk\n",
-	       imacfb_fix.smem_start, info->screen_base,
-	       size_remap/1024, size_total/1024);
-	printk(KERN_INFO "imacfb: mode is %dx%dx%d, linelength=%d, pages=%d\n",
-	       imacfb_defined.xres, imacfb_defined.yres,
-	       imacfb_defined.bits_per_pixel, imacfb_fix.line_length,
-	       screen_info.pages);
-
-	imacfb_defined.xres_virtual = imacfb_defined.xres;
-	imacfb_defined.yres_virtual = imacfb_fix.smem_len /
-					imacfb_fix.line_length;
-	printk(KERN_INFO "imacfb: scrolling: redraw\n");
-	imacfb_defined.yres_virtual = imacfb_defined.yres;
-
-	/* some dummy values for timing to make fbset happy */
-	imacfb_defined.pixclock     = 10000000 / imacfb_defined.xres *
-					1000 / imacfb_defined.yres;
-	imacfb_defined.left_margin  = (imacfb_defined.xres / 8) & 0xf8;
-	imacfb_defined.hsync_len    = (imacfb_defined.xres / 8) & 0xf8;
-
-	imacfb_defined.red.offset    = screen_info.red_pos;
-	imacfb_defined.red.length    = screen_info.red_size;
-	imacfb_defined.green.offset  = screen_info.green_pos;
-	imacfb_defined.green.length  = screen_info.green_size;
-	imacfb_defined.blue.offset   = screen_info.blue_pos;
-	imacfb_defined.blue.length   = screen_info.blue_size;
-	imacfb_defined.transp.offset = screen_info.rsvd_pos;
-	imacfb_defined.transp.length = screen_info.rsvd_size;
-
-	printk(KERN_INFO "imacfb: %s: "
-	       "size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n",
-	       "Truecolor",
-	       screen_info.rsvd_size,
-	       screen_info.red_size,
-	       screen_info.green_size,
-	       screen_info.blue_size,
-	       screen_info.rsvd_pos,
-	       screen_info.red_pos,
-	       screen_info.green_pos,
-	       screen_info.blue_pos);
-
-	imacfb_fix.ypanstep  = 0;
-	imacfb_fix.ywrapstep = 0;
-
-	/* request failure does not faze us, as vgacon probably has this
-	 * region already (FIXME) */
-	request_region(0x3c0, 32, "imacfb");
-
-	info->fbops = &imacfb_ops;
-	info->var = imacfb_defined;
-	info->fix = imacfb_fix;
-	info->flags = FBINFO_FLAG_DEFAULT;
-
-	if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
-		err = -ENOMEM;
-		goto err_unmap;
-	}
-	if (register_framebuffer(info)<0) {
-		err = -EINVAL;
-		goto err_fb_dealoc;
-	}
-	printk(KERN_INFO "fb%d: %s frame buffer device\n",
-	       info->node, info->fix.id);
-	return 0;
-
-err_fb_dealoc:
-	fb_dealloc_cmap(&info->cmap);
-err_unmap:
-	iounmap(info->screen_base);
-	framebuffer_release(info);
-err_release_mem:
-	release_mem_region(imacfb_fix.smem_start, size_total);
-	return err;
-}
-
-static struct platform_driver imacfb_driver = {
-	.probe	= imacfb_probe,
-	.driver	= {
-		.name	= "imacfb",
-	},
-};
-
-static struct platform_device imacfb_device = {
-	.name	= "imacfb",
-};
-
-static int __init imacfb_init(void)
-{
-	int ret;
-	char *option = NULL;
-
-	if (!efi_enabled)
-		return -ENODEV;
-	if (!dmi_check_system(dmi_system_table))
-		return -ENODEV;
-	if (model == M_UNKNOWN)
-		return -ENODEV;
-
-	if (fb_get_options("imacfb", &option))
-		return -ENODEV;
-
-	imacfb_setup(option);
-	ret = platform_driver_register(&imacfb_driver);
-
-	if (!ret) {
-		ret = platform_device_register(&imacfb_device);
-		if (ret)
-			platform_driver_unregister(&imacfb_driver);
-	}
-	return ret;
-}
-module_init(imacfb_init);
-
-MODULE_LICENSE("GPL");