Merge branch 'x86-fb-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fb changes from Ingo Molnar:
 "This tree includes preparatory patches for SimpleDRM driver support,
  by David Herrmann.  They clean up x86 framebuffer support by creating
  simplefb devices wherever possible.  More background can be found at

     http://lwn.net/Articles/558104/"

* 'x86-fb-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  fbdev: fbcon: select VT_HW_CONSOLE_BINDING
  fbdev: efifb: bind to efi-framebuffer
  fbdev: vesafb: bind to platform-framebuffer device
  fbdev: simplefb: add common x86 RGB formats
  x86: sysfb: move EFI quirks from efifb to sysfb
  x86: provide platform-devices for boot-framebuffers
  fbdev: simplefb: mark as fw and allocate apertures
  fbdev: simplefb: add init through platform_data

1 files changed, 95 insertions, 0 deletions

diff --git a/arch/x86/kernel/sysfb_simplefb.c b/arch/x86/kernel/sysfb_simplefb.c
new file mode 100644
index 000000000000..22513e96b012
--- /dev/null
+++ b/arch/x86/kernel/sysfb_simplefb.c
@@ -0,0 +1,95 @@
+/*
+ * Generic System Framebuffers on x86
+ * Copyright (c) 2012-2013 David Herrmann <dh.herrmann@gmail.com>
+ *
+ * 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.
+ */
+
+/*
+ * simple-framebuffer probing
+ * Try to convert "screen_info" into a "simple-framebuffer" compatible mode.
+ * If the mode is incompatible, we return "false" and let the caller create
+ * legacy nodes instead.
+ */
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/platform_data/simplefb.h>
+#include <linux/platform_device.h>
+#include <linux/screen_info.h>
+#include <asm/sysfb.h>
+
+static const char simplefb_resname[] = "BOOTFB";
+static const struct simplefb_format formats[] = SIMPLEFB_FORMATS;
+
+/* try parsing x86 screen_info into a simple-framebuffer mode struct */
+__init bool parse_mode(const struct screen_info *si,
+		       struct simplefb_platform_data *mode)
+{
+	const struct simplefb_format *f;
+	__u8 type;
+	unsigned int i;
+
+	type = si->orig_video_isVGA;
+	if (type != VIDEO_TYPE_VLFB && type != VIDEO_TYPE_EFI)
+		return false;
+
+	for (i = 0; i < ARRAY_SIZE(formats); ++i) {
+		f = &formats[i];
+		if (si->lfb_depth == f->bits_per_pixel &&
+		    si->red_size == f->red.length &&
+		    si->red_pos == f->red.offset &&
+		    si->green_size == f->green.length &&
+		    si->green_pos == f->green.offset &&
+		    si->blue_size == f->blue.length &&
+		    si->blue_pos == f->blue.offset &&
+		    si->rsvd_size == f->transp.length &&
+		    si->rsvd_pos == f->transp.offset) {
+			mode->format = f->name;
+			mode->width = si->lfb_width;
+			mode->height = si->lfb_height;
+			mode->stride = si->lfb_linelength;
+			return true;
+		}
+	}
+
+	return false;
+}
+
+__init int create_simplefb(const struct screen_info *si,
+			   const struct simplefb_platform_data *mode)
+{
+	struct platform_device *pd;
+	struct resource res;
+	unsigned long len;
+
+	/* don't use lfb_size as it may contain the whole VMEM instead of only
+	 * the part that is occupied by the framebuffer */
+	len = mode->height * mode->stride;
+	len = PAGE_ALIGN(len);
+	if (len > si->lfb_size << 16) {
+		printk(KERN_WARNING "sysfb: VRAM smaller than advertised\n");
+		return -EINVAL;
+	}
+
+	/* setup IORESOURCE_MEM as framebuffer memory */
+	memset(&res, 0, sizeof(res));
+	res.flags = IORESOURCE_MEM;
+	res.name = simplefb_resname;
+	res.start = si->lfb_base;
+	res.end = si->lfb_base + len - 1;
+	if (res.end <= res.start)
+		return -EINVAL;
+
+	pd = platform_device_register_resndata(NULL, "simple-framebuffer", 0,
+					       &res, 1, mode, sizeof(*mode));
+	if (IS_ERR(pd))
+		return PTR_ERR(pd);
+
+	return 0;
+}