From 7c08c9ae0c145807c0dae4a55f240fa3d4fd5262 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Wed, 15 Oct 2008 22:03:43 -0700
Subject: efifb/imacfb consolidation + hardware support

Remove imacfb entirely, merging its DMI table into the (otherwise very
similar) efifb driver.  This also adds hardware support for many of the
newer Intel Apple hardware.  This has been fairly well tested; we've been
shipping it in Fedora for some time.

Signed-off-by: Peter Jones <pjones@redhat.com>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Jaya Kumar <jayakumar.lkml@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 drivers/video/imacfb.c | 376 -------------------------------------------------
 1 file changed, 376 deletions(-)

(limited to 'drivers/video/imacfb.c')

diff --git a/drivers/video/imacfb.c b/drivers/video/imacfb.c
index 9366ef2bb5f..e69de29bb2d 100644
--- a/drivers/video/imacfb.c
+++ b/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");
-- 
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