video: move fbdev to drivers/video/fbdev

The drivers/video directory is a mess. It contains generic video related
files, directories for backlight, console, linux logo, lots of fbdev
device drivers, fbdev framework files.

Make some order into the chaos by creating drivers/video/fbdev
directory, and move all fbdev related files there.

No functionality is changed, although I guess it is possible that some
subtle Makefile build order related issue could be created by this
patch.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 2584 insertions, 0 deletions

diff --git a/drivers/video/fbdev/matrox/matroxfb_base.c b/drivers/video/fbdev/matrox/matroxfb_base.c
new file mode 100644
index 000000000000..7116c5309c7d
--- /dev/null
+++ b/drivers/video/fbdev/matrox/matroxfb_base.c
@@ -0,0 +1,2584 @@
+/*
+ *
+ * Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200 and G400
+ *
+ * (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
+ *
+ * Portions Copyright (c) 2001 Matrox Graphics Inc.
+ *
+ * Version: 1.65 2002/08/14
+ *
+ * MTRR stuff: 1998 Tom Rini <trini@kernel.crashing.org>
+ *
+ * Contributors: "menion?" <menion@mindless.com>
+ *                     Betatesting, fixes, ideas
+ *
+ *               "Kurt Garloff" <garloff@suse.de>
+ *                     Betatesting, fixes, ideas, videomodes, videomodes timmings
+ *
+ *               "Tom Rini" <trini@kernel.crashing.org>
+ *                     MTRR stuff, PPC cleanups, betatesting, fixes, ideas
+ *
+ *               "Bibek Sahu" <scorpio@dodds.net>
+ *                     Access device through readb|w|l and write b|w|l
+ *                     Extensive debugging stuff
+ *
+ *               "Daniel Haun" <haund@usa.net>
+ *                     Testing, hardware cursor fixes
+ *
+ *               "Scott Wood" <sawst46+@pitt.edu>
+ *                     Fixes
+ *
+ *               "Gerd Knorr" <kraxel@goldbach.isdn.cs.tu-berlin.de>
+ *                     Betatesting
+ *
+ *               "Kelly French" <targon@hazmat.com>
+ *               "Fernando Herrera" <fherrera@eurielec.etsit.upm.es>
+ *                     Betatesting, bug reporting
+ *
+ *               "Pablo Bianucci" <pbian@pccp.com.ar>
+ *                     Fixes, ideas, betatesting
+ *
+ *               "Inaky Perez Gonzalez" <inaky@peloncho.fis.ucm.es>
+ *                     Fixes, enhandcements, ideas, betatesting
+ *
+ *               "Ryuichi Oikawa" <roikawa@rr.iiij4u.or.jp>
+ *                     PPC betatesting, PPC support, backward compatibility
+ *
+ *               "Paul Womar" <Paul@pwomar.demon.co.uk>
+ *               "Owen Waller" <O.Waller@ee.qub.ac.uk>
+ *                     PPC betatesting
+ *
+ *               "Thomas Pornin" <pornin@bolet.ens.fr>
+ *                     Alpha betatesting
+ *
+ *               "Pieter van Leuven" <pvl@iae.nl>
+ *               "Ulf Jaenicke-Roessler" <ujr@physik.phy.tu-dresden.de>
+ *                     G100 testing
+ *
+ *               "H. Peter Arvin" <hpa@transmeta.com>
+ *                     Ideas
+ *
+ *               "Cort Dougan" <cort@cs.nmt.edu>
+ *                     CHRP fixes and PReP cleanup
+ *
+ *               "Mark Vojkovich" <mvojkovi@ucsd.edu>
+ *                     G400 support
+ *
+ *               "Samuel Hocevar" <sam@via.ecp.fr>
+ *                     Fixes
+ *
+ *               "Anton Altaparmakov" <AntonA@bigfoot.com>
+ *                     G400 MAX/non-MAX distinction
+ *
+ *               "Ken Aaker" <kdaaker@rchland.vnet.ibm.com>
+ *                     memtype extension (needed for GXT130P RS/6000 adapter)
+ *
+ *               "Uns Lider" <unslider@miranda.org>
+ *                     G100 PLNWT fixes
+ *
+ *               "Denis Zaitsev" <zzz@cd-club.ru>
+ *                     Fixes
+ *
+ *               "Mike Pieper" <mike@pieper-family.de>
+ *                     TVOut enhandcements, V4L2 control interface.
+ *
+ *               "Diego Biurrun" <diego@biurrun.de>
+ *                     DFP testing
+ *
+ * (following author is not in any relation with this code, but his code
+ *  is included in this driver)
+ *
+ * Based on framebuffer driver for VBE 2.0 compliant graphic boards
+ *     (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de>
+ *
+ * (following author is not in any relation with this code, but his ideas
+ *  were used when writing this driver)
+ *
+ *		 FreeVBE/AF (Matrox), "Shawn Hargreaves" <shawn@talula.demon.co.uk>
+ *
+ */
+
+#include <linux/version.h>
+
+#include "matroxfb_base.h"
+#include "matroxfb_misc.h"
+#include "matroxfb_accel.h"
+#include "matroxfb_DAC1064.h"
+#include "matroxfb_Ti3026.h"
+#include "matroxfb_maven.h"
+#include "matroxfb_crtc2.h"
+#include "matroxfb_g450.h"
+#include <linux/matroxfb.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+
+#ifdef CONFIG_PPC_PMAC
+#include <asm/machdep.h>
+unsigned char nvram_read_byte(int);
+static int default_vmode = VMODE_NVRAM;
+static int default_cmode = CMODE_NVRAM;
+#endif
+
+static void matroxfb_unregister_device(struct matrox_fb_info* minfo);
+
+/* --------------------------------------------------------------------- */
+
+/*
+ * card parameters
+ */
+
+/* --------------------------------------------------------------------- */
+
+static struct fb_var_screeninfo vesafb_defined = {
+	640,480,640,480,/* W,H, W, H (virtual) load xres,xres_virtual*/
+	0,0,		/* virtual -> visible no offset */
+	8,		/* depth -> load bits_per_pixel */
+	0,		/* greyscale ? */
+	{0,0,0},	/* R */
+	{0,0,0},	/* G */
+	{0,0,0},	/* B */
+	{0,0,0},	/* transparency */
+	0,		/* standard pixel format */
+	FB_ACTIVATE_NOW,
+	-1,-1,
+	FB_ACCELF_TEXT,	/* accel flags */
+	39721L,48L,16L,33L,10L,
+	96L,2L,~0,	/* No sync info */
+	FB_VMODE_NONINTERLACED,
+};
+
+
+
+/* --------------------------------------------------------------------- */
+static void update_crtc2(struct matrox_fb_info *minfo, unsigned int pos)
+{
+	struct matroxfb_dh_fb_info *info = minfo->crtc2.info;
+
+	/* Make sure that displays are compatible */
+	if (info && (info->fbcon.var.bits_per_pixel == minfo->fbcon.var.bits_per_pixel)
+		 && (info->fbcon.var.xres_virtual == minfo->fbcon.var.xres_virtual)
+		 && (info->fbcon.var.green.length == minfo->fbcon.var.green.length)
+		 ) {
+		switch (minfo->fbcon.var.bits_per_pixel) {
+			case 16:
+			case 32:
+				pos = pos * 8;
+				if (info->interlaced) {
+					mga_outl(0x3C2C, pos);
+					mga_outl(0x3C28, pos + minfo->fbcon.var.xres_virtual * minfo->fbcon.var.bits_per_pixel / 8);
+				} else {
+					mga_outl(0x3C28, pos);
+				}
+				break;
+		}
+	}
+}
+
+static void matroxfb_crtc1_panpos(struct matrox_fb_info *minfo)
+{
+	if (minfo->crtc1.panpos >= 0) {
+		unsigned long flags;
+		int panpos;
+
+		matroxfb_DAC_lock_irqsave(flags);
+		panpos = minfo->crtc1.panpos;
+		if (panpos >= 0) {
+			unsigned int extvga_reg;
+
+			minfo->crtc1.panpos = -1; /* No update pending anymore */
+			extvga_reg = mga_inb(M_EXTVGA_INDEX);
+			mga_setr(M_EXTVGA_INDEX, 0x00, panpos);
+			if (extvga_reg != 0x00) {
+				mga_outb(M_EXTVGA_INDEX, extvga_reg);
+			}
+		}
+		matroxfb_DAC_unlock_irqrestore(flags);
+	}
+}
+
+static irqreturn_t matrox_irq(int irq, void *dev_id)
+{
+	u_int32_t status;
+	int handled = 0;
+	struct matrox_fb_info *minfo = dev_id;
+
+	status = mga_inl(M_STATUS);
+
+	if (status & 0x20) {
+		mga_outl(M_ICLEAR, 0x20);
+		minfo->crtc1.vsync.cnt++;
+		matroxfb_crtc1_panpos(minfo);
+		wake_up_interruptible(&minfo->crtc1.vsync.wait);
+		handled = 1;
+	}
+	if (status & 0x200) {
+		mga_outl(M_ICLEAR, 0x200);
+		minfo->crtc2.vsync.cnt++;
+		wake_up_interruptible(&minfo->crtc2.vsync.wait);
+		handled = 1;
+	}
+	return IRQ_RETVAL(handled);
+}
+
+int matroxfb_enable_irq(struct matrox_fb_info *minfo, int reenable)
+{
+	u_int32_t bm;
+
+	if (minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG400)
+		bm = 0x220;
+	else
+		bm = 0x020;
+
+	if (!test_and_set_bit(0, &minfo->irq_flags)) {
+		if (request_irq(minfo->pcidev->irq, matrox_irq,
+				IRQF_SHARED, "matroxfb", minfo)) {
+			clear_bit(0, &minfo->irq_flags);
+			return -EINVAL;
+		}
+		/* Clear any pending field interrupts */
+		mga_outl(M_ICLEAR, bm);
+		mga_outl(M_IEN, mga_inl(M_IEN) | bm);
+	} else if (reenable) {
+		u_int32_t ien;
+
+		ien = mga_inl(M_IEN);
+		if ((ien & bm) != bm) {
+			printk(KERN_DEBUG "matroxfb: someone disabled IRQ [%08X]\n", ien);
+			mga_outl(M_IEN, ien | bm);
+		}
+	}
+	return 0;
+}
+
+static void matroxfb_disable_irq(struct matrox_fb_info *minfo)
+{
+	if (test_and_clear_bit(0, &minfo->irq_flags)) {
+		/* Flush pending pan-at-vbl request... */
+		matroxfb_crtc1_panpos(minfo);
+		if (minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG400)
+			mga_outl(M_IEN, mga_inl(M_IEN) & ~0x220);
+		else
+			mga_outl(M_IEN, mga_inl(M_IEN) & ~0x20);
+		free_irq(minfo->pcidev->irq, minfo);
+	}
+}
+
+int matroxfb_wait_for_sync(struct matrox_fb_info *minfo, u_int32_t crtc)
+{
+	struct matrox_vsync *vs;
+	unsigned int cnt;
+	int ret;
+
+	switch (crtc) {
+		case 0:
+			vs = &minfo->crtc1.vsync;
+			break;
+		case 1:
+			if (minfo->devflags.accelerator != FB_ACCEL_MATROX_MGAG400) {
+				return -ENODEV;
+			}
+			vs = &minfo->crtc2.vsync;
+			break;
+		default:
+			return -ENODEV;
+	}
+	ret = matroxfb_enable_irq(minfo, 0);
+	if (ret) {
+		return ret;
+	}
+
+	cnt = vs->cnt;
+	ret = wait_event_interruptible_timeout(vs->wait, cnt != vs->cnt, HZ/10);
+	if (ret < 0) {
+		return ret;
+	}
+	if (ret == 0) {
+		matroxfb_enable_irq(minfo, 1);
+		return -ETIMEDOUT;
+	}
+	return 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+static void matrox_pan_var(struct matrox_fb_info *minfo,
+			   struct fb_var_screeninfo *var)
+{
+	unsigned int pos;
+	unsigned short p0, p1, p2;
+	unsigned int p3;
+	int vbl;
+	unsigned long flags;
+
+	CRITFLAGS
+
+	DBG(__func__)
+
+	if (minfo->dead)
+		return;
+
+	minfo->fbcon.var.xoffset = var->xoffset;
+	minfo->fbcon.var.yoffset = var->yoffset;
+	pos = (minfo->fbcon.var.yoffset * minfo->fbcon.var.xres_virtual + minfo->fbcon.var.xoffset) * minfo->curr.final_bppShift / 32;
+	pos += minfo->curr.ydstorg.chunks;
+	p0 = minfo->hw.CRTC[0x0D] = pos & 0xFF;
+	p1 = minfo->hw.CRTC[0x0C] = (pos & 0xFF00) >> 8;
+	p2 = minfo->hw.CRTCEXT[0] = (minfo->hw.CRTCEXT[0] & 0xB0) | ((pos >> 16) & 0x0F) | ((pos >> 14) & 0x40);
+	p3 = minfo->hw.CRTCEXT[8] = pos >> 21;
+
+	/* FB_ACTIVATE_VBL and we can acquire interrupts? Honor FB_ACTIVATE_VBL then... */
+	vbl = (var->activate & FB_ACTIVATE_VBL) && (matroxfb_enable_irq(minfo, 0) == 0);
+
+	CRITBEGIN
+
+	matroxfb_DAC_lock_irqsave(flags);
+	mga_setr(M_CRTC_INDEX, 0x0D, p0);
+	mga_setr(M_CRTC_INDEX, 0x0C, p1);
+	if (minfo->devflags.support32MB)
+		mga_setr(M_EXTVGA_INDEX, 0x08, p3);
+	if (vbl) {
+		minfo->crtc1.panpos = p2;
+	} else {
+		/* Abort any pending change */
+		minfo->crtc1.panpos = -1;
+		mga_setr(M_EXTVGA_INDEX, 0x00, p2);
+	}
+	matroxfb_DAC_unlock_irqrestore(flags);
+
+	update_crtc2(minfo, pos);
+
+	CRITEND
+}
+
+static void matroxfb_remove(struct matrox_fb_info *minfo, int dummy)
+{
+	/* Currently we are holding big kernel lock on all dead & usecount updates.
+	 * Destroy everything after all users release it. Especially do not unregister
+	 * framebuffer and iounmap memory, neither fbmem nor fbcon-cfb* does not check
+	 * for device unplugged when in use.
+	 * In future we should point mmio.vbase & video.vbase somewhere where we can
+	 * write data without causing too much damage...
+	 */
+
+	minfo->dead = 1;
+	if (minfo->usecount) {
+		/* destroy it later */
+		return;
+	}
+	matroxfb_unregister_device(minfo);
+	unregister_framebuffer(&minfo->fbcon);
+	matroxfb_g450_shutdown(minfo);
+#ifdef CONFIG_MTRR
+	if (minfo->mtrr.vram_valid)
+		mtrr_del(minfo->mtrr.vram, minfo->video.base, minfo->video.len);
+#endif
+	mga_iounmap(minfo->mmio.vbase);
+	mga_iounmap(minfo->video.vbase);
+	release_mem_region(minfo->video.base, minfo->video.len_maximum);
+	release_mem_region(minfo->mmio.base, 16384);
+	kfree(minfo);
+}
+
+	/*
+	 * Open/Release the frame buffer device
+	 */
+
+static int matroxfb_open(struct fb_info *info, int user)
+{
+	struct matrox_fb_info *minfo = info2minfo(info);
+
+	DBG_LOOP(__func__)
+
+	if (minfo->dead) {
+		return -ENXIO;
+	}
+	minfo->usecount++;
+	if (user) {
+		minfo->userusecount++;
+	}
+	return(0);
+}
+
+static int matroxfb_release(struct fb_info *info, int user)
+{
+	struct matrox_fb_info *minfo = info2minfo(info);
+
+	DBG_LOOP(__func__)
+
+	if (user) {
+		if (0 == --minfo->userusecount) {
+			matroxfb_disable_irq(minfo);
+		}
+	}
+	if (!(--minfo->usecount) && minfo->dead) {
+		matroxfb_remove(minfo, 0);
+	}
+	return(0);
+}
+
+static int matroxfb_pan_display(struct fb_var_screeninfo *var,
+		struct fb_info* info) {
+	struct matrox_fb_info *minfo = info2minfo(info);
+
+	DBG(__func__)
+
+	matrox_pan_var(minfo, var);
+	return 0;
+}
+
+static int matroxfb_get_final_bppShift(const struct matrox_fb_info *minfo,
+				       int bpp)
+{
+	int bppshft2;
+
+	DBG(__func__)
+
+	bppshft2 = bpp;
+	if (!bppshft2) {
+		return 8;
+	}
+	if (isInterleave(minfo))
+		bppshft2 >>= 1;
+	if (minfo->devflags.video64bits)
+		bppshft2 >>= 1;
+	return bppshft2;
+}
+
+static int matroxfb_test_and_set_rounding(const struct matrox_fb_info *minfo,
+					  int xres, int bpp)
+{
+	int over;
+	int rounding;
+
+	DBG(__func__)
+
+	switch (bpp) {
+		case 0:		return xres;
+		case 4:		rounding = 128;
+				break;
+		case 8:		rounding = 64;	/* doc says 64; 32 is OK for G400 */
+				break;
+		case 16:	rounding = 32;
+				break;
+		case 24:	rounding = 64;	/* doc says 64; 32 is OK for G400 */
+				break;
+		default:	rounding = 16;
+				/* on G400, 16 really does not work */
+				if (minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG400)
+					rounding = 32;
+				break;
+	}
+	if (isInterleave(minfo)) {
+		rounding *= 2;
+	}
+	over = xres % rounding;
+	if (over)
+		xres += rounding-over;
+	return xres;
+}
+
+static int matroxfb_pitch_adjust(const struct matrox_fb_info *minfo, int xres,
+				 int bpp)
+{
+	const int* width;
+	int xres_new;
+
+	DBG(__func__)
+
+	if (!bpp) return xres;
+
+	width = minfo->capable.vxres;
+
+	if (minfo->devflags.precise_width) {
+		while (*width) {
+			if ((*width >= xres) && (matroxfb_test_and_set_rounding(minfo, *width, bpp) == *width)) {
+				break;
+			}
+			width++;
+		}
+		xres_new = *width;
+	} else {
+		xres_new = matroxfb_test_and_set_rounding(minfo, xres, bpp);
+	}
+	return xres_new;
+}
+
+static int matroxfb_get_cmap_len(struct fb_var_screeninfo *var) {
+
+	DBG(__func__)
+
+	switch (var->bits_per_pixel) {
+		case 4:
+			return 16;	/* pseudocolor... 16 entries HW palette */
+		case 8:
+			return 256;	/* pseudocolor... 256 entries HW palette */
+		case 16:
+			return 16;	/* directcolor... 16 entries SW palette */
+					/* Mystique: truecolor, 16 entries SW palette, HW palette hardwired into 1:1 mapping */
+		case 24:
+			return 16;	/* directcolor... 16 entries SW palette */
+					/* Mystique: truecolor, 16 entries SW palette, HW palette hardwired into 1:1 mapping */
+		case 32:
+			return 16;	/* directcolor... 16 entries SW palette */
+					/* Mystique: truecolor, 16 entries SW palette, HW palette hardwired into 1:1 mapping */
+	}
+	return 16;	/* return something reasonable... or panic()? */
+}
+
+static int matroxfb_decode_var(const struct matrox_fb_info *minfo,
+			       struct fb_var_screeninfo *var, int *visual,
+			       int *video_cmap_len, unsigned int* ydstorg)
+{
+	struct RGBT {
+		unsigned char bpp;
+		struct {
+			unsigned char offset,
+				      length;
+		} red,
+		  green,
+		  blue,
+		  transp;
+		signed char visual;
+	};
+	static const struct RGBT table[]= {
+		{ 8,{ 0,8},{0,8},{0,8},{ 0,0},MX_VISUAL_PSEUDOCOLOR},
+		{15,{10,5},{5,5},{0,5},{15,1},MX_VISUAL_DIRECTCOLOR},
+		{16,{11,5},{5,6},{0,5},{ 0,0},MX_VISUAL_DIRECTCOLOR},
+		{24,{16,8},{8,8},{0,8},{ 0,0},MX_VISUAL_DIRECTCOLOR},
+		{32,{16,8},{8,8},{0,8},{24,8},MX_VISUAL_DIRECTCOLOR}
+	};
+	struct RGBT const *rgbt;
+	unsigned int bpp = var->bits_per_pixel;
+	unsigned int vramlen;
+	unsigned int memlen;
+
+	DBG(__func__)
+
+	switch (bpp) {
+		case 4:	 if (!minfo->capable.cfb4) return -EINVAL;
+			 break;
+		case 8:	 break;
+		case 16: break;
+		case 24: break;
+		case 32: break;
+		default: return -EINVAL;
+	}
+	*ydstorg = 0;
+	vramlen = minfo->video.len_usable;
+	if (var->yres_virtual < var->yres)
+		var->yres_virtual = var->yres;
+	if (var->xres_virtual < var->xres)
+		var->xres_virtual = var->xres;
+
+	var->xres_virtual = matroxfb_pitch_adjust(minfo, var->xres_virtual, bpp);
+	memlen = var->xres_virtual * bpp * var->yres_virtual / 8;
+	if (memlen > vramlen) {
+		var->yres_virtual = vramlen * 8 / (var->xres_virtual * bpp);
+		memlen = var->xres_virtual * bpp * var->yres_virtual / 8;
+	}
+	/* There is hardware bug that no line can cross 4MB boundary */
+	/* give up for CFB24, it is impossible to easy workaround it */
+	/* for other try to do something */
+	if (!minfo->capable.cross4MB && (memlen > 0x400000)) {
+		if (bpp == 24) {
+			/* sorry */
+		} else {
+			unsigned int linelen;
+			unsigned int m1 = linelen = var->xres_virtual * bpp / 8;
+			unsigned int m2 = PAGE_SIZE;	/* or 128 if you do not need PAGE ALIGNED address */
+			unsigned int max_yres;
+
+			while (m1) {
+				int t;
+
+				while (m2 >= m1) m2 -= m1;
+				t = m1;
+				m1 = m2;
+				m2 = t;
+			}
+			m2 = linelen * PAGE_SIZE / m2;
+			*ydstorg = m2 = 0x400000 % m2;
+			max_yres = (vramlen - m2) / linelen;
+			if (var->yres_virtual > max_yres)
+				var->yres_virtual = max_yres;
+		}
+	}
+	/* YDSTLEN contains only signed 16bit value */
+	if (var->yres_virtual > 32767)
+		var->yres_virtual = 32767;
+	/* we must round yres/xres down, we already rounded y/xres_virtual up
+	   if it was possible. We should return -EINVAL, but I disagree */
+	if (var->yres_virtual < var->yres)
+		var->yres = var->yres_virtual;
+	if (var->xres_virtual < var->xres)
+		var->xres = var->xres_virtual;
+	if (var->xoffset + var->xres > var->xres_virtual)
+		var->xoffset = var->xres_virtual - var->xres;
+	if (var->yoffset + var->yres > var->yres_virtual)
+		var->yoffset = var->yres_virtual - var->yres;
+
+	if (bpp == 16 && var->green.length == 5) {
+		bpp--; /* an artificial value - 15 */
+	}
+
+	for (rgbt = table; rgbt->bpp < bpp; rgbt++);
+#define	SETCLR(clr)\
+	var->clr.offset = rgbt->clr.offset;\
+	var->clr.length = rgbt->clr.length
+	SETCLR(red);
+	SETCLR(green);
+	SETCLR(blue);
+	SETCLR(transp);
+#undef	SETCLR
+	*visual = rgbt->visual;
+
+	if (bpp > 8)
+		dprintk("matroxfb: truecolor: "
+			"size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n",
+			var->transp.length, var->red.length, var->green.length, var->blue.length,
+			var->transp.offset, var->red.offset, var->green.offset, var->blue.offset);
+
+	*video_cmap_len = matroxfb_get_cmap_len(var);
+	dprintk(KERN_INFO "requested %d*%d/%dbpp (%d*%d)\n", var->xres, var->yres, var->bits_per_pixel,
+				var->xres_virtual, var->yres_virtual);
+	return 0;
+}
+
+static int matroxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
+			      unsigned blue, unsigned transp,
+			      struct fb_info *fb_info)
+{
+	struct matrox_fb_info* minfo = container_of(fb_info, struct matrox_fb_info, fbcon);
+
+	DBG(__func__)
+
+	/*
+	 *  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 >= minfo->curr.cmap_len)
+		return 1;
+
+	if (minfo->fbcon.var.grayscale) {
+		/* gray = 0.30*R + 0.59*G + 0.11*B */
+		red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
+	}
+
+	red = CNVT_TOHW(red, minfo->fbcon.var.red.length);
+	green = CNVT_TOHW(green, minfo->fbcon.var.green.length);
+	blue = CNVT_TOHW(blue, minfo->fbcon.var.blue.length);
+	transp = CNVT_TOHW(transp, minfo->fbcon.var.transp.length);
+
+	switch (minfo->fbcon.var.bits_per_pixel) {
+	case 4:
+	case 8:
+		mga_outb(M_DAC_REG, regno);
+		mga_outb(M_DAC_VAL, red);
+		mga_outb(M_DAC_VAL, green);
+		mga_outb(M_DAC_VAL, blue);
+		break;
+	case 16:
+		if (regno >= 16)
+			break;
+		{
+			u_int16_t col =
+				(red << minfo->fbcon.var.red.offset)     |
+				(green << minfo->fbcon.var.green.offset) |
+				(blue << minfo->fbcon.var.blue.offset)   |
+				(transp << minfo->fbcon.var.transp.offset); /* for 1:5:5:5 */
+			minfo->cmap[regno] = col | (col << 16);
+		}
+		break;
+	case 24:
+	case 32:
+		if (regno >= 16)
+			break;
+		minfo->cmap[regno] =
+			(red   << minfo->fbcon.var.red.offset)   |
+			(green << minfo->fbcon.var.green.offset) |
+			(blue  << minfo->fbcon.var.blue.offset)  |
+			(transp << minfo->fbcon.var.transp.offset);	/* 8:8:8:8 */
+		break;
+	}
+	return 0;
+}
+
+static void matroxfb_init_fix(struct matrox_fb_info *minfo)
+{
+	struct fb_fix_screeninfo *fix = &minfo->fbcon.fix;
+	DBG(__func__)
+
+	strcpy(fix->id,"MATROX");
+
+	fix->xpanstep = 8;	/* 8 for 8bpp, 4 for 16bpp, 2 for 32bpp */
+	fix->ypanstep = 1;
+	fix->ywrapstep = 0;
+	fix->mmio_start = minfo->mmio.base;
+	fix->mmio_len = minfo->mmio.len;
+	fix->accel = minfo->devflags.accelerator;
+}
+
+static void matroxfb_update_fix(struct matrox_fb_info *minfo)
+{
+	struct fb_fix_screeninfo *fix = &minfo->fbcon.fix;
+	DBG(__func__)
+
+	mutex_lock(&minfo->fbcon.mm_lock);
+	fix->smem_start = minfo->video.base + minfo->curr.ydstorg.bytes;
+	fix->smem_len = minfo->video.len_usable - minfo->curr.ydstorg.bytes;
+	mutex_unlock(&minfo->fbcon.mm_lock);
+}
+
+static int matroxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+	int err;
+	int visual;
+	int cmap_len;
+	unsigned int ydstorg;
+	struct matrox_fb_info *minfo = info2minfo(info);
+
+	if (minfo->dead) {
+		return -ENXIO;
+	}
+	if ((err = matroxfb_decode_var(minfo, var, &visual, &cmap_len, &ydstorg)) != 0)
+		return err;
+	return 0;
+}
+
+static int matroxfb_set_par(struct fb_info *info)
+{
+	int err;
+	int visual;
+	int cmap_len;
+	unsigned int ydstorg;
+	struct fb_var_screeninfo *var;
+	struct matrox_fb_info *minfo = info2minfo(info);
+
+	DBG(__func__)
+
+	if (minfo->dead) {
+		return -ENXIO;
+	}
+
+	var = &info->var;
+	if ((err = matroxfb_decode_var(minfo, var, &visual, &cmap_len, &ydstorg)) != 0)
+		return err;
+	minfo->fbcon.screen_base = vaddr_va(minfo->video.vbase) + ydstorg;
+	matroxfb_update_fix(minfo);
+	minfo->fbcon.fix.visual = visual;
+	minfo->fbcon.fix.type = FB_TYPE_PACKED_PIXELS;
+	minfo->fbcon.fix.type_aux = 0;
+	minfo->fbcon.fix.line_length = (var->xres_virtual * var->bits_per_pixel) >> 3;
+	{
+		unsigned int pos;
+
+		minfo->curr.cmap_len = cmap_len;
+		ydstorg += minfo->devflags.ydstorg;
+		minfo->curr.ydstorg.bytes = ydstorg;
+		minfo->curr.ydstorg.chunks = ydstorg >> (isInterleave(minfo) ? 3 : 2);
+		if (var->bits_per_pixel == 4)
+			minfo->curr.ydstorg.pixels = ydstorg;
+		else
+			minfo->curr.ydstorg.pixels = (ydstorg * 8) / var->bits_per_pixel;
+		minfo->curr.final_bppShift = matroxfb_get_final_bppShift(minfo, var->bits_per_pixel);
+		{	struct my_timming mt;
+			struct matrox_hw_state* hw;
+			int out;
+
+			matroxfb_var2my(var, &mt);
+			mt.crtc = MATROXFB_SRC_CRTC1;
+			/* CRTC1 delays */
+			switch (var->bits_per_pixel) {
+				case  0:	mt.delay = 31 + 0; break;
+				case 16:	mt.delay = 21 + 8; break;
+				case 24:	mt.delay = 17 + 8; break;
+				case 32:	mt.delay = 16 + 8; break;
+				default:	mt.delay = 31 + 8; break;
+			}
+
+			hw = &minfo->hw;
+
+			down_read(&minfo->altout.lock);
+			for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
+				if (minfo->outputs[out].src == MATROXFB_SRC_CRTC1 &&
+				    minfo->outputs[out].output->compute) {
+					minfo->outputs[out].output->compute(minfo->outputs[out].data, &mt);
+				}
+			}
+			up_read(&minfo->altout.lock);
+			minfo->crtc1.pixclock = mt.pixclock;
+			minfo->crtc1.mnp = mt.mnp;
+			minfo->hw_switch->init(minfo, &mt);
+			pos = (var->yoffset * var->xres_virtual + var->xoffset) * minfo->curr.final_bppShift / 32;
+			pos += minfo->curr.ydstorg.chunks;
+
+			hw->CRTC[0x0D] = pos & 0xFF;
+			hw->CRTC[0x0C] = (pos & 0xFF00) >> 8;
+			hw->CRTCEXT[0] = (hw->CRTCEXT[0] & 0xF0) | ((pos >> 16) & 0x0F) | ((pos >> 14) & 0x40);
+			hw->CRTCEXT[8] = pos >> 21;
+			minfo->hw_switch->restore(minfo);
+			update_crtc2(minfo, pos);
+			down_read(&minfo->altout.lock);
+			for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
+				if (minfo->outputs[out].src == MATROXFB_SRC_CRTC1 &&
+				    minfo->outputs[out].output->program) {
+					minfo->outputs[out].output->program(minfo->outputs[out].data);
+				}
+			}
+			for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
+				if (minfo->outputs[out].src == MATROXFB_SRC_CRTC1 &&
+				    minfo->outputs[out].output->start) {
+					minfo->outputs[out].output->start(minfo->outputs[out].data);
+				}
+			}
+			up_read(&minfo->altout.lock);
+			matrox_cfbX_init(minfo);
+		}
+	}
+	minfo->initialized = 1;
+	return 0;
+}
+
+static int matroxfb_get_vblank(struct matrox_fb_info *minfo,
+			       struct fb_vblank *vblank)
+{
+	unsigned int sts1;
+
+	matroxfb_enable_irq(minfo, 0);
+	memset(vblank, 0, sizeof(*vblank));
+	vblank->flags = FB_VBLANK_HAVE_VCOUNT | FB_VBLANK_HAVE_VSYNC |
+			FB_VBLANK_HAVE_VBLANK | FB_VBLANK_HAVE_HBLANK;
+	sts1 = mga_inb(M_INSTS1);
+	vblank->vcount = mga_inl(M_VCOUNT);
+	/* BTW, on my PIII/450 with G400, reading M_INSTS1
+	   byte makes this call about 12% slower (1.70 vs. 2.05 us
+	   per ioctl()) */
+	if (sts1 & 1)
+		vblank->flags |= FB_VBLANK_HBLANKING;
+	if (sts1 & 8)
+		vblank->flags |= FB_VBLANK_VSYNCING;
+	if (vblank->vcount >= minfo->fbcon.var.yres)
+		vblank->flags |= FB_VBLANK_VBLANKING;
+	if (test_bit(0, &minfo->irq_flags)) {
+		vblank->flags |= FB_VBLANK_HAVE_COUNT;
+		/* Only one writer, aligned int value...
+		   it should work without lock and without atomic_t */
+		vblank->count = minfo->crtc1.vsync.cnt;
+	}
+	return 0;
+}
+
+static struct matrox_altout panellink_output = {
+	.name	 = "Panellink output",
+};
+
+static int matroxfb_ioctl(struct fb_info *info,
+			  unsigned int cmd, unsigned long arg)
+{
+	void __user *argp = (void __user *)arg;
+	struct matrox_fb_info *minfo = info2minfo(info);
+
+	DBG(__func__)
+
+	if (minfo->dead) {
+		return -ENXIO;
+	}
+
+	switch (cmd) {
+		case FBIOGET_VBLANK:
+			{
+				struct fb_vblank vblank;
+				int err;
+
+				err = matroxfb_get_vblank(minfo, &vblank);
+				if (err)
+					return err;
+				if (copy_to_user(argp, &vblank, sizeof(vblank)))
+					return -EFAULT;
+				return 0;
+			}
+		case FBIO_WAITFORVSYNC:
+			{
+				u_int32_t crt;
+
+				if (get_user(crt, (u_int32_t __user *)arg))
+					return -EFAULT;
+
+				return matroxfb_wait_for_sync(minfo, crt);
+			}
+		case MATROXFB_SET_OUTPUT_MODE:
+			{
+				struct matroxioc_output_mode mom;
+				struct matrox_altout *oproc;
+				int val;
+
+				if (copy_from_user(&mom, argp, sizeof(mom)))
+					return -EFAULT;
+				if (mom.output >= MATROXFB_MAX_OUTPUTS)
+					return -ENXIO;
+				down_read(&minfo->altout.lock);
+				oproc = minfo->outputs[mom.output].output;
+				if (!oproc) {
+					val = -ENXIO;
+				} else if (!oproc->verifymode) {
+					if (mom.mode == MATROXFB_OUTPUT_MODE_MONITOR) {
+						val = 0;
+					} else {
+						val = -EINVAL;
+					}
+				} else {
+					val = oproc->verifymode(minfo->outputs[mom.output].data, mom.mode);
+				}
+				if (!val) {
+					if (minfo->outputs[mom.output].mode != mom.mode) {
+						minfo->outputs[mom.output].mode = mom.mode;
+						val = 1;
+					}
+				}
+				up_read(&minfo->altout.lock);
+				if (val != 1)
+					return val;
+				switch (minfo->outputs[mom.output].src) {
+					case MATROXFB_SRC_CRTC1:
+						matroxfb_set_par(info);
+						break;
+					case MATROXFB_SRC_CRTC2:
+						{
+							struct matroxfb_dh_fb_info* crtc2;
+
+							down_read(&minfo->crtc2.lock);
+							crtc2 = minfo->crtc2.info;
+							if (crtc2)
+								crtc2->fbcon.fbops->fb_set_par(&crtc2->fbcon);
+							up_read(&minfo->crtc2.lock);
+						}
+						break;
+				}
+				return 0;
+			}
+		case MATROXFB_GET_OUTPUT_MODE:
+			{
+				struct matroxioc_output_mode mom;
+				struct matrox_altout *oproc;
+				int val;
+
+				if (copy_from_user(&mom, argp, sizeof(mom)))
+					return -EFAULT;
+				if (mom.output >= MATROXFB_MAX_OUTPUTS)
+					return -ENXIO;
+				down_read(&minfo->altout.lock);
+				oproc = minfo->outputs[mom.output].output;
+				if (!oproc) {
+					val = -ENXIO;
+				} else {
+					mom.mode = minfo->outputs[mom.output].mode;
+					val = 0;
+				}
+				up_read(&minfo->altout.lock);
+				if (val)
+					return val;
+				if (copy_to_user(argp, &mom, sizeof(mom)))
+					return -EFAULT;
+				return 0;
+			}
+		case MATROXFB_SET_OUTPUT_CONNECTION:
+			{
+				u_int32_t tmp;
+				int i;
+				int changes;
+
+				if (copy_from_user(&tmp, argp, sizeof(tmp)))
+					return -EFAULT;
+				for (i = 0; i < 32; i++) {
+					if (tmp & (1 << i)) {
+						if (i >= MATROXFB_MAX_OUTPUTS)
+							return -ENXIO;
+						if (!minfo->outputs[i].output)
+							return -ENXIO;
+						switch (minfo->outputs[i].src) {
+							case MATROXFB_SRC_NONE:
+							case MATROXFB_SRC_CRTC1:
+								break;
+							default:
+								return -EBUSY;
+						}
+					}
+				}
+				if (minfo->devflags.panellink) {
+					if (tmp & MATROXFB_OUTPUT_CONN_DFP) {
+						if (tmp & MATROXFB_OUTPUT_CONN_SECONDARY)
+							return -EINVAL;
+						for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
+							if (minfo->outputs[i].src == MATROXFB_SRC_CRTC2) {
+								return -EBUSY;
+							}
+						}
+					}
+				}
+				changes = 0;
+				for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
+					if (tmp & (1 << i)) {
+						if (minfo->outputs[i].src != MATROXFB_SRC_CRTC1) {
+							changes = 1;
+							minfo->outputs[i].src = MATROXFB_SRC_CRTC1;
+						}
+					} else if (minfo->outputs[i].src == MATROXFB_SRC_CRTC1) {
+						changes = 1;
+						minfo->outputs[i].src = MATROXFB_SRC_NONE;
+					}
+				}
+				if (!changes)
+					return 0;
+				matroxfb_set_par(info);
+				return 0;
+			}
+		case MATROXFB_GET_OUTPUT_CONNECTION:
+			{
+				u_int32_t conn = 0;
+				int i;
+
+				for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
+					if (minfo->outputs[i].src == MATROXFB_SRC_CRTC1) {
+						conn |= 1 << i;
+					}
+				}
+				if (put_user(conn, (u_int32_t __user *)arg))
+					return -EFAULT;
+				return 0;
+			}
+		case MATROXFB_GET_AVAILABLE_OUTPUTS:
+			{
+				u_int32_t conn = 0;
+				int i;
+
+				for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
+					if (minfo->outputs[i].output) {
+						switch (minfo->outputs[i].src) {
+							case MATROXFB_SRC_NONE:
+							case MATROXFB_SRC_CRTC1:
+								conn |= 1 << i;
+								break;
+						}
+					}
+				}
+				if (minfo->devflags.panellink) {
+					if (conn & MATROXFB_OUTPUT_CONN_DFP)
+						conn &= ~MATROXFB_OUTPUT_CONN_SECONDARY;
+					if (conn & MATROXFB_OUTPUT_CONN_SECONDARY)
+						conn &= ~MATROXFB_OUTPUT_CONN_DFP;
+				}
+				if (put_user(conn, (u_int32_t __user *)arg))
+					return -EFAULT;
+				return 0;
+			}
+		case MATROXFB_GET_ALL_OUTPUTS:
+			{
+				u_int32_t conn = 0;
+				int i;
+
+				for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
+					if (minfo->outputs[i].output) {
+						conn |= 1 << i;
+					}
+				}
+				if (put_user(conn, (u_int32_t __user *)arg))
+					return -EFAULT;
+				return 0;
+			}
+		case VIDIOC_QUERYCAP:
+			{
+				struct v4l2_capability r;
+
+				memset(&r, 0, sizeof(r));
+				strcpy(r.driver, "matroxfb");
+				strcpy(r.card, "Matrox");
+				sprintf(r.bus_info, "PCI:%s", pci_name(minfo->pcidev));
+				r.version = KERNEL_VERSION(1,0,0);
+				r.capabilities = V4L2_CAP_VIDEO_OUTPUT;
+				if (copy_to_user(argp, &r, sizeof(r)))
+					return -EFAULT;
+				return 0;
+
+			}
+		case VIDIOC_QUERYCTRL:
+			{
+				struct v4l2_queryctrl qctrl;
+				int err;
+
+				if (copy_from_user(&qctrl, argp, sizeof(qctrl)))
+					return -EFAULT;
+
+				down_read(&minfo->altout.lock);
+				if (!m