Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 902 insertions, 0 deletions

diff --git a/drivers/video/fbdev/macfb.c b/drivers/video/fbdev/macfb.c
new file mode 100644
index 000000000..312e35c9a
--- /dev/null
+++ b/drivers/video/fbdev/macfb.c
@@ -0,0 +1,902 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * macfb.c: Generic framebuffer for Macs whose colourmaps/modes we
+ * don't know how to set.
+ *
+ * (c) 1999 David Huggins-Daines <dhd@debian.org>
+ *
+ * Primarily based on vesafb.c, by Gerd Knorr
+ * (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de>
+ *
+ * Also uses information and code from:
+ *
+ * The original macfb.c from Linux/mac68k 2.0, by Alan Cox, Juergen
+ * Mellinger, Mikael Forselius, Michael Schmitz, and others.
+ *
+ * valkyriefb.c, by Martin Costabel, Kevin Schoedel, Barry Nathan, Dan
+ * Jacobowitz, Paul Mackerras, Fabio Riccardi, and Geert Uytterhoeven.
+ *
+ * The VideoToolbox "Bugs" web page at
+ * http://rajsky.psych.nyu.edu/Tips/VideoBugs.html
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <linux/nubus.h>
+#include <linux/init.h>
+#include <linux/fb.h>
+
+#include <asm/setup.h>
+#include <asm/macintosh.h>
+#include <asm/io.h>
+
+/* Common DAC base address for the LC, RBV, Valkyrie, and IIvx */
+#define DAC_BASE 0x50f24000
+
+/* Some addresses for the DAFB */
+#define DAFB_BASE 0xf9800200
+
+/* Address for the built-in Civic framebuffer in Quadra AVs */
+#define CIVIC_BASE 0x50f30800
+
+/* GSC (Gray Scale Controller) base address */
+#define GSC_BASE 0x50F20000
+
+/* CSC (Color Screen Controller) base address */
+#define CSC_BASE 0x50F20000
+
+static int (*macfb_setpalette)(unsigned int regno, unsigned int red,
+			       unsigned int green, unsigned int blue,
+			       struct fb_info *info);
+
+static struct {
+	unsigned char addr;
+	unsigned char lut;
+} __iomem *v8_brazil_cmap_regs;
+
+static struct {
+	unsigned char addr;
+	char pad1[3]; /* word aligned */
+	unsigned char lut;
+	char pad2[3]; /* word aligned */
+	unsigned char cntl; /* a guess as to purpose */
+} __iomem *rbv_cmap_regs;
+
+static struct {
+	unsigned long reset;
+	unsigned long pad1[3];
+	unsigned char pad2[3];
+	unsigned char lut;
+} __iomem *dafb_cmap_regs;
+
+static struct {
+	unsigned char addr;	/* OFFSET: 0x00 */
+	unsigned char pad1[15];
+	unsigned char lut;	/* OFFSET: 0x10 */
+	unsigned char pad2[15];
+	unsigned char status;	/* OFFSET: 0x20 */
+	unsigned char pad3[7];
+	unsigned long vbl_addr;	/* OFFSET: 0x28 */
+	unsigned int  status2;	/* OFFSET: 0x2C */
+} __iomem *civic_cmap_regs;
+
+static struct {
+	char pad1[0x40];
+	unsigned char clut_waddr;	/* 0x40 */
+	char pad2;
+	unsigned char clut_data;	/* 0x42 */
+	char pad3[0x3];
+	unsigned char clut_raddr;	/* 0x46 */
+} __iomem *csc_cmap_regs;
+
+/* The registers in these structs are in NuBus slot space */
+struct mdc_cmap_regs {
+	char pad1[0x200200];
+	unsigned char addr;
+	char pad2[6];
+	unsigned char lut;
+};
+
+struct toby_cmap_regs {
+	char pad1[0x90018];
+	unsigned char lut; /* TFBClutWDataReg, offset 0x90018 */
+	char pad2[3];
+	unsigned char addr; /* TFBClutAddrReg, offset 0x9001C */
+};
+
+struct jet_cmap_regs {
+	char pad1[0xe0e000];
+	unsigned char addr;
+	unsigned char lut;
+};
+
+#define PIXEL_TO_MM(a)	(((a)*10)/28)	/* width in mm at 72 dpi */
+
+static struct fb_var_screeninfo macfb_defined = {
+	.activate	= FB_ACTIVATE_NOW,
+	.right_margin	= 32,
+	.upper_margin	= 16,
+	.lower_margin	= 4,
+	.vsync_len	= 4,
+	.vmode		= FB_VMODE_NONINTERLACED,
+};
+
+static struct fb_fix_screeninfo macfb_fix = {
+	.type	= FB_TYPE_PACKED_PIXELS,
+	.accel	= FB_ACCEL_NONE,
+};
+
+static void *slot_addr;
+static struct fb_info fb_info;
+static u32 pseudo_palette[16];
+static int vidtest;
+
+/*
+ * Unlike the Valkyrie, the DAFB cannot set individual colormap
+ * registers.  Therefore, we do what the MacOS driver does (no
+ * kidding!) and simply set them one by one until we hit the one we
+ * want.
+ */
+static int dafb_setpalette(unsigned int regno, unsigned int red,
+			   unsigned int green, unsigned int blue,
+			   struct fb_info *info)
+{
+	static int lastreg = -2;
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	/*
+	 * fbdev will set an entire colourmap, but X won't.  Hopefully
+	 * this should accommodate both of them
+	 */
+	if (regno != lastreg + 1) {
+		int i;
+
+		/* Stab in the dark trying to reset the CLUT pointer */
+		nubus_writel(0, &dafb_cmap_regs->reset);
+		nop();
+
+		/* Loop until we get to the register we want */
+		for (i = 0; i < regno; i++) {
+			nubus_writeb(info->cmap.red[i] >> 8,
+				     &dafb_cmap_regs->lut);
+			nop();
+			nubus_writeb(info->cmap.green[i] >> 8,
+				     &dafb_cmap_regs->lut);
+			nop();
+			nubus_writeb(info->cmap.blue[i] >> 8,
+				     &dafb_cmap_regs->lut);
+			nop();
+		}
+	}
+
+	nubus_writeb(red, &dafb_cmap_regs->lut);
+	nop();
+	nubus_writeb(green, &dafb_cmap_regs->lut);
+	nop();
+	nubus_writeb(blue, &dafb_cmap_regs->lut);
+
+	local_irq_restore(flags);
+	lastreg = regno;
+	return 0;
+}
+
+/* V8 and Brazil seem to use the same DAC.  Sonora does as well. */
+static int v8_brazil_setpalette(unsigned int regno, unsigned int red,
+				unsigned int green, unsigned int blue,
+				struct fb_info *info)
+{
+	unsigned int bpp = info->var.bits_per_pixel;
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	/* On these chips, the CLUT register numbers are spread out
+	 * across the register space.  Thus:
+	 * In 8bpp, all regnos are valid.
+	 * In 4bpp, the regnos are 0x0f, 0x1f, 0x2f, etc, etc
+	 * In 2bpp, the regnos are 0x3f, 0x7f, 0xbf, 0xff
+	 */
+	regno = (regno << (8 - bpp)) | (0xFF >> bpp);
+	nubus_writeb(regno, &v8_brazil_cmap_regs->addr);
+	nop();
+
+	/* send one color channel at a time */
+	nubus_writeb(red, &v8_brazil_cmap_regs->lut);
+	nop();
+	nubus_writeb(green, &v8_brazil_cmap_regs->lut);
+	nop();
+	nubus_writeb(blue, &v8_brazil_cmap_regs->lut);
+
+	local_irq_restore(flags);
+	return 0;
+}
+
+/* RAM-Based Video */
+static int rbv_setpalette(unsigned int regno, unsigned int red,
+			  unsigned int green, unsigned int blue,
+			  struct fb_info *info)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	/* From the VideoToolbox driver.  Seems to be saying that
+	 * regno #254 and #255 are the important ones for 1-bit color,
+	 * regno #252-255 are the important ones for 2-bit color, etc.
+	 */
+	regno += 256 - (1 << info->var.bits_per_pixel);
+
+	/* reset clut? (VideoToolbox sez "not necessary") */
+	nubus_writeb(0xFF, &rbv_cmap_regs->cntl);
+	nop();
+
+	/* tell clut which address to use. */
+	nubus_writeb(regno, &rbv_cmap_regs->addr);
+	nop();
+
+	/* send one color channel at a time. */
+	nubus_writeb(red, &rbv_cmap_regs->lut);
+	nop();
+	nubus_writeb(green, &rbv_cmap_regs->lut);
+	nop();
+	nubus_writeb(blue, &rbv_cmap_regs->lut);
+
+	local_irq_restore(flags);
+	return 0;
+}
+
+/* Macintosh Display Card (8*24) */
+static int mdc_setpalette(unsigned int regno, unsigned int red,
+			  unsigned int green, unsigned int blue,
+			  struct fb_info *info)
+{
+	struct mdc_cmap_regs *cmap_regs = slot_addr;
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	/* the nop's are there to order writes. */
+	nubus_writeb(regno, &cmap_regs->addr);
+	nop();
+	nubus_writeb(red, &cmap_regs->lut);
+	nop();
+	nubus_writeb(green, &cmap_regs->lut);
+	nop();
+	nubus_writeb(blue, &cmap_regs->lut);
+
+	local_irq_restore(flags);
+	return 0;
+}
+
+/* Toby frame buffer */
+static int toby_setpalette(unsigned int regno, unsigned int red,
+			   unsigned int green, unsigned int blue,
+			   struct fb_info *info)
+{
+	struct toby_cmap_regs *cmap_regs = slot_addr;
+	unsigned int bpp = info->var.bits_per_pixel;
+	unsigned long flags;
+
+	red = ~red;
+	green = ~green;
+	blue = ~blue;
+	regno = (regno << (8 - bpp)) | (0xFF >> bpp);
+
+	local_irq_save(flags);
+
+	nubus_writeb(regno, &cmap_regs->addr);
+	nop();
+	nubus_writeb(red, &cmap_regs->lut);
+	nop();
+	nubus_writeb(green, &cmap_regs->lut);
+	nop();
+	nubus_writeb(blue, &cmap_regs->lut);
+
+	local_irq_restore(flags);
+	return 0;
+}
+
+/* Jet frame buffer */
+static int jet_setpalette(unsigned int regno, unsigned int red,
+			  unsigned int green, unsigned int blue,
+			  struct fb_info *info)
+{
+	struct jet_cmap_regs *cmap_regs = slot_addr;
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	nubus_writeb(regno, &cmap_regs->addr);
+	nop();
+	nubus_writeb(red, &cmap_regs->lut);
+	nop();
+	nubus_writeb(green, &cmap_regs->lut);
+	nop();
+	nubus_writeb(blue, &cmap_regs->lut);
+
+	local_irq_restore(flags);
+	return 0;
+}
+
+/*
+ * Civic framebuffer -- Quadra AV built-in video.  A chip
+ * called Sebastian holds the actual color palettes, and
+ * apparently, there are two different banks of 512K RAM
+ * which can act as separate framebuffers for doing video
+ * input and viewing the screen at the same time!  The 840AV
+ * Can add another 1MB RAM to give the two framebuffers
+ * 1MB RAM apiece.
+ */
+static int civic_setpalette(unsigned int regno, unsigned int red,
+			    unsigned int green, unsigned int blue,
+			    struct fb_info *info)
+{
+	unsigned long flags;
+	int clut_status;
+	
+	local_irq_save(flags);
+
+	/* Set the register address */
+	nubus_writeb(regno, &civic_cmap_regs->addr);
+	nop();
+
+	/*
+	 * Grab a status word and do some checking;
+	 * Then finally write the clut!
+	 */
+	clut_status =  nubus_readb(&civic_cmap_regs->status2);
+
+	if ((clut_status & 0x0008) == 0)
+	{
+#if 0
+		if ((clut_status & 0x000D) != 0)
+		{
+			nubus_writeb(0x00, &civic_cmap_regs->lut);
+			nop();
+			nubus_writeb(0x00, &civic_cmap_regs->lut);
+			nop();
+		}
+#endif
+
+		nubus_writeb(red, &civic_cmap_regs->lut);
+		nop();
+		nubus_writeb(green, &civic_cmap_regs->lut);
+		nop();
+		nubus_writeb(blue, &civic_cmap_regs->lut);
+		nop();
+		nubus_writeb(0x00, &civic_cmap_regs->lut);
+	}
+	else
+	{
+		unsigned char junk;
+
+		junk = nubus_readb(&civic_cmap_regs->lut);
+		nop();
+		junk = nubus_readb(&civic_cmap_regs->lut);
+		nop();
+		junk = nubus_readb(&civic_cmap_regs->lut);
+		nop();
+		junk = nubus_readb(&civic_cmap_regs->lut);
+		nop();
+
+		if ((clut_status & 0x000D) != 0)
+		{
+			nubus_writeb(0x00, &civic_cmap_regs->lut);
+			nop();
+			nubus_writeb(0x00, &civic_cmap_regs->lut);
+			nop();
+		}
+
+		nubus_writeb(red, &civic_cmap_regs->lut);
+		nop();
+		nubus_writeb(green, &civic_cmap_regs->lut);
+		nop();
+		nubus_writeb(blue, &civic_cmap_regs->lut);
+		nop();
+		nubus_writeb(junk, &civic_cmap_regs->lut);
+	}
+
+	local_irq_restore(flags);
+	return 0;
+}
+
+/*
+ * The CSC is the framebuffer on the PowerBook 190 series
+ * (and the 5300 too, but that's a PowerMac). This function
+ * brought to you in part by the ECSC driver for MkLinux.
+ */
+static int csc_setpalette(unsigned int regno, unsigned int red,
+			  unsigned int green, unsigned int blue,
+			  struct fb_info *info)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	udelay(1); /* mklinux on PB 5300 waits for 260 ns */
+	nubus_writeb(regno, &csc_cmap_regs->clut_waddr);
+	nubus_writeb(red, &csc_cmap_regs->clut_data);
+	nubus_writeb(green, &csc_cmap_regs->clut_data);
+	nubus_writeb(blue, &csc_cmap_regs->clut_data);
+
+	local_irq_restore(flags);
+	return 0;
+}
+
+static int macfb_setcolreg(unsigned regno, unsigned red, unsigned green,
+			   unsigned blue, unsigned transp,
+			   struct fb_info *fb_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 non-zero for invalid regno.
+	 */
+	
+	if (regno >= fb_info->cmap.len)
+		return 1;
+
+	if (fb_info->var.bits_per_pixel <= 8) {
+		switch (fb_info->var.bits_per_pixel) {
+		case 1:
+			/* We shouldn't get here */
+			break;
+		case 2:
+		case 4:
+		case 8:
+			if (macfb_setpalette)
+				macfb_setpalette(regno, red >> 8, green >> 8,
+						 blue >> 8, fb_info);
+			else
+				return 1;
+			break;
+		}
+	} else if (regno < 16) {
+		switch (fb_info->var.bits_per_pixel) {
+		case 16:
+			if (fb_info->var.red.offset == 10) {
+				/* 1:5:5:5 */
+				((u32*) (fb_info->pseudo_palette))[regno] =
+					((red   & 0xf800) >>  1) |
+					((green & 0xf800) >>  6) |
+					((blue  & 0xf800) >> 11) |
+					((transp != 0) << 15);
+			} else {
+				/* 0:5:6:5 */
+				((u32*) (fb_info->pseudo_palette))[regno] =
+					((red   & 0xf800) >>  0) |
+					((green & 0xfc00) >>  5) |
+					((blue  & 0xf800) >> 11);
+			}
+			break;
+		/*
+		 * 24-bit colour almost doesn't exist on 68k Macs --
+		 * https://support.apple.com/kb/TA28634 (Old Article: 10992)
+		 */
+		case 24:
+		case 32:
+			red   >>= 8;
+			green >>= 8;
+			blue  >>= 8;
+			((u32 *)(fb_info->pseudo_palette))[regno] =
+				(red   << fb_info->var.red.offset) |
+				(green << fb_info->var.green.offset) |
+				(blue  << fb_info->var.blue.offset);
+			break;
+		}
+	}
+
+	return 0;
+}
+
+static const struct fb_ops macfb_ops = {
+	.owner		= THIS_MODULE,
+	.fb_setcolreg	= macfb_setcolreg,
+	.fb_fillrect	= cfb_fillrect,
+	.fb_copyarea	= cfb_copyarea,
+	.fb_imageblit	= cfb_imageblit,
+};
+
+static void __init macfb_setup(char *options)
+{
+	char *this_opt;
+
+	if (!options || !*options)
+		return;
+
+	while ((this_opt = strsep(&options, ",")) != NULL) {
+		if (!*this_opt)
+			continue;
+
+		if (!strcmp(this_opt, "inverse"))
+			fb_invert_cmaps();
+		else
+			if (!strcmp(this_opt, "vidtest"))
+				vidtest = 1; /* enable experimental CLUT code */
+	}
+}
+
+static void __init iounmap_macfb(void)
+{
+	if (dafb_cmap_regs)
+		iounmap(dafb_cmap_regs);
+	if (v8_brazil_cmap_regs)
+		iounmap(v8_brazil_cmap_regs);
+	if (rbv_cmap_regs)
+		iounmap(rbv_cmap_regs);
+	if (civic_cmap_regs)
+		iounmap(civic_cmap_regs);
+	if (csc_cmap_regs)
+		iounmap(csc_cmap_regs);
+}
+
+static int __init macfb_init(void)
+{
+	int video_cmap_len, video_is_nubus = 0;
+	struct nubus_rsrc *ndev = NULL;
+	char *option = NULL;
+	int err;
+
+	if (fb_get_options("macfb", &option))
+		return -ENODEV;
+	macfb_setup(option);
+
+	if (!MACH_IS_MAC) 
+		return -ENODEV;
+
+	if (mac_bi_data.id == MAC_MODEL_Q630 ||
+	    mac_bi_data.id == MAC_MODEL_P588)
+		return -ENODEV; /* See valkyriefb.c */
+
+	macfb_defined.xres = mac_bi_data.dimensions & 0xFFFF;
+	macfb_defined.yres = mac_bi_data.dimensions >> 16;
+	macfb_defined.bits_per_pixel = mac_bi_data.videodepth;
+
+	macfb_fix.line_length = mac_bi_data.videorow;
+	macfb_fix.smem_len    = macfb_fix.line_length * macfb_defined.yres;
+	/* Note: physical address (since 2.1.127) */
+	macfb_fix.smem_start  = mac_bi_data.videoaddr;
+
+	/*
+	 * This is actually redundant with the initial mappings.
+	 * However, there are some non-obvious aspects to the way
+	 * those mappings are set up, so this is in fact the safest
+	 * way to ensure that this driver will work on every possible Mac
+	 */
+	fb_info.screen_base = ioremap(mac_bi_data.videoaddr,
+				      macfb_fix.smem_len);
+	if (!fb_info.screen_base)
+		return -ENODEV;
+
+	pr_info("macfb: framebuffer at 0x%08lx, mapped to 0x%p, size %dk\n",
+	        macfb_fix.smem_start, fb_info.screen_base,
+	        macfb_fix.smem_len / 1024);
+	pr_info("macfb: mode is %dx%dx%d, linelength=%d\n",
+	        macfb_defined.xres, macfb_defined.yres,
+	        macfb_defined.bits_per_pixel, macfb_fix.line_length);
+
+	/* Fill in the available video resolution */
+	macfb_defined.xres_virtual = macfb_defined.xres;
+	macfb_defined.yres_virtual = macfb_defined.yres;
+	macfb_defined.height       = PIXEL_TO_MM(macfb_defined.yres);
+	macfb_defined.width        = PIXEL_TO_MM(macfb_defined.xres);
+
+	/* Some dummy values for timing to make fbset happy */
+	macfb_defined.pixclock     = 10000000 / macfb_defined.xres *
+				     1000 / macfb_defined.yres;
+	macfb_defined.left_margin  = (macfb_defined.xres / 8) & 0xf8;
+	macfb_defined.hsync_len    = (macfb_defined.xres / 8) & 0xf8;
+
+	switch (macfb_defined.bits_per_pixel) {
+	case 1:
+		macfb_defined.red.length = macfb_defined.bits_per_pixel;
+		macfb_defined.green.length = macfb_defined.bits_per_pixel;
+		macfb_defined.blue.length = macfb_defined.bits_per_pixel;
+		video_cmap_len = 2;
+		macfb_fix.visual = FB_VISUAL_MONO01;
+		break;
+	case 2:
+	case 4:
+	case 8:
+		macfb_defined.red.length = macfb_defined.bits_per_pixel;
+		macfb_defined.green.length = macfb_defined.bits_per_pixel;
+		macfb_defined.blue.length = macfb_defined.bits_per_pixel;
+		video_cmap_len = 1 << macfb_defined.bits_per_pixel;
+		macfb_fix.visual = FB_VISUAL_PSEUDOCOLOR;
+		break;
+	case 16:
+		macfb_defined.transp.offset = 15;
+		macfb_defined.transp.length = 1;
+		macfb_defined.red.offset = 10;
+		macfb_defined.red.length = 5;
+		macfb_defined.green.offset = 5;
+		macfb_defined.green.length = 5;
+		macfb_defined.blue.offset = 0;
+		macfb_defined.blue.length = 5;
+		video_cmap_len = 16;
+		/*
+		 * Should actually be FB_VISUAL_DIRECTCOLOR, but this
+		 * works too
+		 */
+		macfb_fix.visual = FB_VISUAL_TRUECOLOR;
+		break;
+	case 24:
+	case 32:
+		macfb_defined.red.offset = 16;
+		macfb_defined.red.length = 8;
+		macfb_defined.green.offset = 8;
+		macfb_defined.green.length = 8;
+		macfb_defined.blue.offset = 0;
+		macfb_defined.blue.length = 8;
+		video_cmap_len = 16;
+		macfb_fix.visual = FB_VISUAL_TRUECOLOR;
+		break;
+	default:
+		pr_err("macfb: unknown or unsupported bit depth: %d\n",
+		       macfb_defined.bits_per_pixel);
+		err = -EINVAL;
+		goto fail_unmap;
+	}
+	
+	/*
+	 * We take a wild guess that if the video physical address is
+	 * in nubus slot space, that the nubus card is driving video.
+	 * Penguin really ought to tell us whether we are using internal
+	 * video or not.
+	 * Hopefully we only find one of them.  Otherwise our NuBus
+	 * code is really broken :-)
+	 */
+
+	for_each_func_rsrc(ndev) {
+		unsigned long base = ndev->board->slot_addr;
+
+		if (mac_bi_data.videoaddr < base ||
+		    mac_bi_data.videoaddr - base > 0xFFFFFF)
+			continue;
+
+		if (ndev->category != NUBUS_CAT_DISPLAY ||
+		    ndev->type != NUBUS_TYPE_VIDEO)
+			continue;
+
+		video_is_nubus = 1;
+		slot_addr = (unsigned char *)base;
+
+		switch(ndev->dr_hw) {
+		case NUBUS_DRHW_APPLE_MDC:
+			strcpy(macfb_fix.id, "Mac Disp. Card");
+			macfb_setpalette = mdc_setpalette;
+			break;
+		case NUBUS_DRHW_APPLE_TFB:
+			strcpy(macfb_fix.id, "Toby");
+			macfb_setpalette = toby_setpalette;
+			break;
+		case NUBUS_DRHW_APPLE_JET:
+			strcpy(macfb_fix.id, "Jet");
+			macfb_setpalette = jet_setpalette;
+			break;
+		default:
+			strcpy(macfb_fix.id, "Generic NuBus");
+			break;
+		}
+	}
+
+	/* If it's not a NuBus card, it must be internal video */
+	if (!video_is_nubus)
+		switch (mac_bi_data.id) {
+		/*
+		 * DAFB Quadras
+		 * Note: these first four have the v7 DAFB, which is
+		 * known to be rather unlike the ones used in the
+		 * other models
+		 */
+		case MAC_MODEL_P475:
+		case MAC_MODEL_P475F:
+		case MAC_MODEL_P575:
+		case MAC_MODEL_Q605:
+
+		case MAC_MODEL_Q800:
+		case MAC_MODEL_Q650:
+		case MAC_MODEL_Q610:
+		case MAC_MODEL_C650:
+		case MAC_MODEL_C610:
+		case MAC_MODEL_Q700:
+		case MAC_MODEL_Q900:
+		case MAC_MODEL_Q950:
+			strcpy(macfb_fix.id, "DAFB");
+			macfb_setpalette = dafb_setpalette;
+			dafb_cmap_regs = ioremap(DAFB_BASE, 0x1000);
+			break;
+
+		/*
+		 * LC II uses the V8 framebuffer
+		 */
+		case MAC_MODEL_LCII:
+			strcpy(macfb_fix.id, "V8");
+			macfb_setpalette = v8_brazil_setpalette;
+			v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
+			break;
+
+		/*
+		 * IIvi, IIvx use the "Brazil" framebuffer (which is
+		 * very much like the V8, it seems, and probably uses
+		 * the same DAC)
+		 */
+		case MAC_MODEL_IIVI:
+		case MAC_MODEL_IIVX:
+		case MAC_MODEL_P600:
+			strcpy(macfb_fix.id, "Brazil");
+			macfb_setpalette = v8_brazil_setpalette;
+			v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
+			break;
+
+		/*
+		 * LC III (and friends) use the Sonora framebuffer
+		 * Incidentally this is also used in the non-AV models
+		 * of the x100 PowerMacs
+		 * These do in fact seem to use the same DAC interface
+		 * as the LC II.
+		 */
+		case MAC_MODEL_LCIII:
+		case MAC_MODEL_P520:
+		case MAC_MODEL_P550:
+		case MAC_MODEL_P460:
+			strcpy(macfb_fix.id, "Sonora");
+			macfb_setpalette = v8_brazil_setpalette;
+			v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
+			break;
+
+		/*
+		 * IIci and IIsi use the infamous RBV chip
+		 * (the IIsi is just a rebadged and crippled
+		 * IIci in a different case, BTW)
+		 */
+		case MAC_MODEL_IICI:
+		case MAC_MODEL_IISI:
+			strcpy(macfb_fix.id, "RBV");
+			macfb_setpalette = rbv_setpalette;
+			rbv_cmap_regs = ioremap(DAC_BASE, 0x1000);
+			break;
+
+		/*
+		 * AVs use the Civic framebuffer
+		 */
+		case MAC_MODEL_Q840:
+		case MAC_MODEL_C660:
+			strcpy(macfb_fix.id, "Civic");
+			macfb_setpalette = civic_setpalette;
+			civic_cmap_regs = ioremap(CIVIC_BASE, 0x1000);
+			break;
+
+		
+		/*
+		 * Assorted weirdos
+		 * We think this may be like the LC II
+		 */
+		case MAC_MODEL_LC:
+			strcpy(macfb_fix.id, "LC");
+			if (vidtest) {
+				macfb_setpalette = v8_brazil_setpalette;
+				v8_brazil_cmap_regs =
+					ioremap(DAC_BASE, 0x1000);
+			}
+			break;
+
+		/*
+		 * We think this may be like the LC II
+		 */
+		case MAC_MODEL_CCL:
+			strcpy(macfb_fix.id, "Color Classic");
+			if (vidtest) {
+				macfb_setpalette = v8_brazil_setpalette;
+				v8_brazil_cmap_regs =
+					ioremap(DAC_BASE, 0x1000);
+			}
+			break;
+
+		/*
+		 * And we *do* mean "weirdos"
+		 */
+		case MAC_MODEL_TV:
+			strcpy(macfb_fix.id, "Mac TV");
+			break;
+
+		/*
+		 * These don't have colour, so no need to worry
+		 */
+		case MAC_MODEL_SE30:
+		case MAC_MODEL_CLII:
+			strcpy(macfb_fix.id, "Monochrome");
+			break;
+
+		/*
+		 * Powerbooks are particularly difficult.  Many of
+		 * them have separate framebuffers for external and
+		 * internal video, which is admittedly pretty cool,
+		 * but will be a bit of a headache to support here.
+		 * Also, many of them are grayscale, and we don't
+		 * really support that.
+		 */
+
+		/*
+		 * Slot 0 ROM says TIM. No external video. B&W.
+		 */
+		case MAC_MODEL_PB140:
+		case MAC_MODEL_PB145:
+		case MAC_MODEL_PB170:
+			strcpy(macfb_fix.id, "DDC");
+			break;
+
+		/*
+		 * Internal is GSC, External (if present) is ViSC
+		 */
+		case MAC_MODEL_PB150:	/* no external video */
+		case MAC_MODEL_PB160:
+		case MAC_MODEL_PB165:
+		case MAC_MODEL_PB180:
+		case MAC_MODEL_PB210:
+		case MAC_MODEL_PB230:
+			strcpy(macfb_fix.id, "GSC");
+			break;
+
+		/*
+		 * Internal is TIM, External is ViSC
+		 */
+		case MAC_MODEL_PB165C:
+		case MAC_MODEL_PB180C:
+			strcpy(macfb_fix.id, "TIM");
+			break;
+
+		/*
+		 * Internal is CSC, External is Keystone+Ariel.
+		 */
+		case MAC_MODEL_PB190:	/* external video is optional */
+		case MAC_MODEL_PB520:
+		case MAC_MODEL_PB250:
+		case MAC_MODEL_PB270C:
+		case MAC_MODEL_PB280:
+		case MAC_MODEL_PB280C:
+			strcpy(macfb_fix.id, "CSC");
+			macfb_setpalette = csc_setpalette;
+			csc_cmap_regs = ioremap(CSC_BASE, 0x1000);
+			break;
+
+		default:
+			strcpy(macfb_fix.id, "Unknown");
+			break;
+		}
+
+	fb_info.fbops		= &macfb_ops;
+	fb_info.var		= macfb_defined;
+	fb_info.fix		= macfb_fix;
+	fb_info.pseudo_palette	= pseudo_palette;
+	fb_info.flags		= FBINFO_DEFAULT;
+
+	err = fb_alloc_cmap(&fb_info.cmap, video_cmap_len, 0);
+	if (err)
+		goto fail_unmap;
+
+	err = register_framebuffer(&fb_info);
+	if (err)
+		goto fail_dealloc;
+
+	fb_info(&fb_info, "%s frame buffer device\n", fb_info.fix.id);
+
+	return 0;
+
+fail_dealloc:
+	fb_dealloc_cmap(&fb_info.cmap);
+fail_unmap:
+	iounmap(fb_info.screen_base);
+	iounmap_macfb();
+	return err;
+}
+
+module_init(macfb_init);
+MODULE_LICENSE("GPL");