m68k: Atari fb revival

Update the atari fb to 2.6 by Michael Schmitz,
Reformatting and rewrite of bit plane functions by Roman Zippel,
A few more fixes by Geert Uytterhoeven.

Signed-off-by: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1487 insertions, 1314 deletions

diff --git a/drivers/video/atafb.c b/drivers/video/atafb.c
index bffe2b94634..0038a0541c7 100644
--- a/drivers/video/atafb.c
+++ b/drivers/video/atafb.c
@@ -2,7 +2,7 @@
  * linux/drivers/video/atafb.c -- Atari builtin chipset frame buffer device
  *
  *  Copyright (C) 1994 Martin Schaller & Roman Hodek
- *  
+ *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file COPYING in the main directory of this archive
  * for more details.
@@ -70,14 +70,8 @@
 #include <linux/fb.h>
 #include <asm/atarikb.h>
 
-#include <video/fbcon.h>
-#include <video/fbcon-cfb8.h>
-#include <video/fbcon-cfb16.h>
-#include <video/fbcon-iplan2p2.h>
-#include <video/fbcon-iplan2p4.h>
-#include <video/fbcon-iplan2p8.h>
-#include <video/fbcon-mfb.h>
-
+#include "c2p.h"
+#include "atafb.h"
 
 #define SWITCH_ACIA 0x01		/* modes for switch on OverScan */
 #define SWITCH_SND6 0x40
@@ -87,22 +81,48 @@
 
 #define up(x, r) (((x) + (r) - 1) & ~((r)-1))
 
+	/*
+	 * Interface to the world
+	 */
+
+static int atafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info);
+static int atafb_set_par(struct fb_info *info);
+static int atafb_setcolreg(unsigned int regno, unsigned int red, unsigned int green,
+			   unsigned int blue, unsigned int transp,
+			   struct fb_info *info);
+static int atafb_blank(int blank, struct fb_info *info);
+static int atafb_pan_display(struct fb_var_screeninfo *var,
+			     struct fb_info *info);
+static void atafb_fillrect(struct fb_info *info,
+			   const struct fb_fillrect *rect);
+static void atafb_copyarea(struct fb_info *info,
+			   const struct fb_copyarea *region);
+static void atafb_imageblit(struct fb_info *info, const struct fb_image *image);
+static int atafb_ioctl(struct fb_info *info, unsigned int cmd,
+		       unsigned long arg);
+
 
-static int default_par=0;	/* default resolution (0=none) */
+static int default_par;		/* default resolution (0=none) */
 
-static unsigned long default_mem_req=0;
+static unsigned long default_mem_req;
 
-static int hwscroll=-1;
+static int hwscroll = -1;
 
 static int use_hwscroll = 1;
 
-static int sttt_xres=640,st_yres=400,tt_yres=480;
-static int sttt_xres_virtual=640,sttt_yres_virtual=400;
-static int ovsc_offset=0, ovsc_addlen=0;
+static int sttt_xres = 640, st_yres = 400, tt_yres = 480;
+static int sttt_xres_virtual = 640, sttt_yres_virtual = 400;
+static int ovsc_offset, ovsc_addlen;
+
+	/*
+	 * Hardware parameters for current mode
+	 */
 
 static struct atafb_par {
 	void *screen_base;
 	int yres_virtual;
+	u_long next_line;
+	u_long next_plane;
 #if defined ATAFB_TT || defined ATAFB_STE
 	union {
 		struct {
@@ -138,7 +158,7 @@ static struct atafb_par {
 /* Don't calculate an own resolution, and thus don't change the one found when
  * booting (currently used for the Falcon to keep settings for internal video
  * hardware extensions (e.g. ScreenBlaster)  */
-static int DontCalcRes = 0; 
+static int DontCalcRes = 0;
 
 #ifdef ATAFB_FALCON
 #define HHT hw.falcon.hht
@@ -163,83 +183,84 @@ static int DontCalcRes = 0;
 #define VMO_PREMASK		0x0c
 #endif
 
-static struct fb_info fb_info;
+static struct fb_info fb_info = {
+	.fix = {
+		.id	= "Atari ",
+		.visual	= FB_VISUAL_PSEUDOCOLOR,
+		.accel	= FB_ACCEL_NONE,
+	}
+};
 
 static void *screen_base;	/* base address of screen */
 static void *real_screen_base;	/* (only for Overscan) */
 
 static int screen_len;
 
-static int current_par_valid=0; 
+static int current_par_valid;
 
-static int mono_moni=0;
-
-static struct display disp;
+static int mono_moni;
 
 
 #ifdef ATAFB_EXT
-/* external video handling */
 
-static unsigned			external_xres;
-static unsigned			external_xres_virtual;
-static unsigned			external_yres;
-/* not needed - atafb will never support panning/hardwarescroll with external
- * static unsigned		external_yres_virtual;	
-*/
+/* external video handling */
+static unsigned int external_xres;
+static unsigned int external_xres_virtual;
+static unsigned int external_yres;
 
-static unsigned			external_depth;
-static int				external_pmode;
-static void *external_addr = 0;
-static unsigned long	external_len;
-static unsigned long	external_vgaiobase = 0;
-static unsigned int		external_bitspercol = 6;
-
-/* 
-JOE <joe@amber.dinoco.de>: 
-added card type for external driver, is only needed for
-colormap handling.
-*/
+/*
+ * not needed - atafb will never support panning/hardwarescroll with external
+ * static unsigned int external_yres_virtual;
+ */
+static unsigned int external_depth;
+static int external_pmode;
+static void *external_addr;
+static unsigned long external_len;
+static unsigned long external_vgaiobase;
+static unsigned int external_bitspercol = 6;
 
+/*
+ * JOE <joe@amber.dinoco.de>:
+ * added card type for external driver, is only needed for
+ * colormap handling.
+ */
 enum cardtype { IS_VGA, IS_MV300 };
 static enum cardtype external_card_type = IS_VGA;
 
 /*
-The MV300 mixes the color registers. So we need an array of munged
-indices in order to access the correct reg.
-*/
-static int MV300_reg_1bit[2]={0,1};
-static int MV300_reg_4bit[16]={
-0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15 };
-static int MV300_reg_8bit[256]={
-0, 128, 64, 192, 32, 160, 96, 224, 16, 144, 80, 208, 48, 176, 112, 240, 
-8, 136, 72, 200, 40, 168, 104, 232, 24, 152, 88, 216, 56, 184, 120, 248, 
-4, 132, 68, 196, 36, 164, 100, 228, 20, 148, 84, 212, 52, 180, 116, 244, 
-12, 140, 76, 204, 44, 172, 108, 236, 28, 156, 92, 220, 60, 188, 124, 252, 
-2, 130, 66, 194, 34, 162, 98, 226, 18, 146, 82, 210, 50, 178, 114, 242, 
-10, 138, 74, 202, 42, 170, 106, 234, 26, 154, 90, 218, 58, 186, 122, 250, 
-6, 134, 70, 198, 38, 166, 102, 230, 22, 150, 86, 214, 54, 182, 118, 246, 
-14, 142, 78, 206, 46, 174, 110, 238, 30, 158, 94, 222, 62, 190, 126, 254, 
-1, 129, 65, 193, 33, 161, 97, 225, 17, 145, 81, 209, 49, 177, 113, 241, 
-9, 137, 73, 201, 41, 169, 105, 233, 25, 153, 89, 217, 57, 185, 121, 249, 
-5, 133, 69, 197, 37, 165, 101, 229, 21, 149, 85, 213, 53, 181, 117, 245, 
-13, 141, 77, 205, 45, 173, 109, 237, 29, 157, 93, 221, 61, 189, 125, 253, 
-3, 131, 67, 195, 35, 163, 99, 227, 19, 147, 83, 211, 51, 179, 115, 243, 
-11, 139, 75, 203, 43, 171, 107, 235, 27, 155, 91, 219, 59, 187, 123, 251, 
-7, 135, 71, 199, 39, 167, 103, 231, 23, 151, 87, 215, 55, 183, 119, 247, 
-15, 143, 79, 207, 47, 175, 111, 239, 31, 159, 95, 223, 63, 191, 127, 255 }; 
+ * The MV300 mixes the color registers. So we need an array of munged
+ * indices in order to access the correct reg.
+ */
+static int MV300_reg_1bit[2] = {
+	0, 1
+};
+static int MV300_reg_4bit[16] = {
+	0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15
+};
+static int MV300_reg_8bit[256] = {
+	0, 128, 64, 192, 32, 160, 96, 224, 16, 144, 80, 208, 48, 176, 112, 240,
+	8, 136, 72, 200, 40, 168, 104, 232, 24, 152, 88, 216, 56, 184, 120, 248,
+	4, 132, 68, 196, 36, 164, 100, 228, 20, 148, 84, 212, 52, 180, 116, 244,
+	12, 140, 76, 204, 44, 172, 108, 236, 28, 156, 92, 220, 60, 188, 124, 252,
+	2, 130, 66, 194, 34, 162, 98, 226, 18, 146, 82, 210, 50, 178, 114, 242,
+	10, 138, 74, 202, 42, 170, 106, 234, 26, 154, 90, 218, 58, 186, 122, 250,
+	6, 134, 70, 198, 38, 166, 102, 230, 22, 150, 86, 214, 54, 182, 118, 246,
+	14, 142, 78, 206, 46, 174, 110, 238, 30, 158, 94, 222, 62, 190, 126, 254,
+	1, 129, 65, 193, 33, 161, 97, 225, 17, 145, 81, 209, 49, 177, 113, 241,
+	9, 137, 73, 201, 41, 169, 105, 233, 25, 153, 89, 217, 57, 185, 121, 249,
+	5, 133, 69, 197, 37, 165, 101, 229, 21, 149, 85, 213, 53, 181, 117, 245,
+	13, 141, 77, 205, 45, 173, 109, 237, 29, 157, 93, 221, 61, 189, 125, 253,
+	3, 131, 67, 195, 35, 163, 99, 227, 19, 147, 83, 211, 51, 179, 115, 243,
+	11, 139, 75, 203, 43, 171, 107, 235, 27, 155, 91, 219, 59, 187, 123, 251,
+	7, 135, 71, 199, 39, 167, 103, 231, 23, 151, 87, 215, 55, 183, 119, 247,
+	15, 143, 79, 207, 47, 175, 111, 239, 31, 159, 95, 223, 63, 191, 127, 255
+};
 
 static int *MV300_reg = MV300_reg_8bit;
-
-/*
-And on the MV300 it's difficult to read out the hardware palette. So we
-just keep track of the set colors in our own array here, and use that!
-*/
-
-static struct { unsigned char red,green,blue,pad; } ext_color[256];
 #endif /* ATAFB_EXT */
 
 
-static int inverse=0;
+static int inverse;
 
 extern int fontheight_8x8;
 extern int fontwidth_8x8;
@@ -249,96 +270,154 @@ extern int fontheight_8x16;
 extern int fontwidth_8x16;
 extern unsigned char fontdata_8x16[];
 
+/*
+ * struct fb_ops {
+ *	* open/release and usage marking
+ *	struct module *owner;
+ *	int (*fb_open)(struct fb_info *info, int user);
+ *	int (*fb_release)(struct fb_info *info, int user);
+ *
+ *	* For framebuffers with strange non linear layouts or that do not
+ *	* work with normal memory mapped access
+ *	ssize_t (*fb_read)(struct file *file, char __user *buf, size_t count, loff_t *ppos);
+ *	ssize_t (*fb_write)(struct file *file, const char __user *buf, size_t count, loff_t *ppos);
+ *
+ *	* checks var and eventually tweaks it to something supported,
+ *	* DOES NOT MODIFY PAR *
+ *	int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
+ *
+ *	* set the video mode according to info->var *
+ *	int (*fb_set_par)(struct fb_info *info);
+ *
+ *	* set color register *
+ *	int (*fb_setcolreg)(unsigned int regno, unsigned int red, unsigned int green,
+ *			    unsigned int blue, unsigned int transp, struct fb_info *info);
+ *
+ *	* set color registers in batch *
+ *	int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
+ *
+ *	* blank display *
+ *	int (*fb_blank)(int blank, struct fb_info *info);
+ *
+ *	* pan display *
+ *	int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
+ *
+ *	*** The meat of the drawing engine ***
+ *	* Draws a rectangle *
+ *	void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
+ *	* Copy data from area to another *
+ *	void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
+ *	* Draws a image to the display *
+ *	void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
+ *
+ *	* Draws cursor *
+ *	int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
+ *
+ *	* Rotates the display *
+ *	void (*fb_rotate)(struct fb_info *info, int angle);
+ *
+ *	* wait for blit idle, optional *
+ *	int (*fb_sync)(struct fb_info *info);
+ *
+ *	* perform fb specific ioctl (optional) *
+ *	int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
+ *			unsigned long arg);
+ *
+ *	* Handle 32bit compat ioctl (optional) *
+ *	int (*fb_compat_ioctl)(struct fb_info *info, unsigned int cmd,
+ *			unsigned long arg);
+ *
+ *	* perform fb specific mmap *
+ *	int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
+ *
+ *	* save current hardware state *
+ *	void (*fb_save_state)(struct fb_info *info);
+ *
+ *	* restore saved state *
+ *	void (*fb_restore_state)(struct fb_info *info);
+ * } ;
+ */
+
+
 /* ++roman: This structure abstracts from the underlying hardware (ST(e),
  * TT, or Falcon.
  *
- * int (*detect)( void )
+ * int (*detect)(void)
  *   This function should detect the current video mode settings and
  *   store them in atafb_predefined[0] for later reference by the
  *   user. Return the index+1 of an equivalent predefined mode or 0
  *   if there is no such.
- * 
- * int (*encode_fix)( struct fb_fix_screeninfo *fix,
- *                    struct atafb_par *par )
+ *
+ * int (*encode_fix)(struct fb_fix_screeninfo *fix,
+ *                   struct atafb_par *par)
  *   This function should fill in the 'fix' structure based on the
  *   values in the 'par' structure.
- *   
- * int (*decode_var)( struct fb_var_screeninfo *var,
- *                    struct atafb_par *par )
+ * !!! Obsolete, perhaps !!!
+ *
+ * int (*decode_var)(struct fb_var_screeninfo *var,
+ *                   struct atafb_par *par)
  *   Get the video params out of 'var'. If a value doesn't fit, round
  *   it up, if it's too big, return EINVAL.
- *   Round up in the following order: bits_per_pixel, xres, yres, 
- *   xres_virtual, yres_virtual, xoffset, yoffset, grayscale, bitfields, 
+ *   Round up in the following order: bits_per_pixel, xres, yres,
+ *   xres_virtual, yres_virtual, xoffset, yoffset, grayscale, bitfields,
  *   horizontal timing, vertical timing.
  *
- * int (*encode_var)( struct fb_var_screeninfo *var,
- *                    struct atafb_par *par );
+ * int (*encode_var)(struct fb_var_screeninfo *var,
+ *                   struct atafb_par *par);
  *   Fill the 'var' structure based on the values in 'par' and maybe
  *   other values read out of the hardware.
- *   
- * void (*get_par)( struct atafb_par *par )
+ *
+ * void (*get_par)(struct atafb_par *par)
  *   Fill the hardware's 'par' structure.
- *   
- * void (*set_par)( struct atafb_par *par )
+ *   !!! Used only by detect() !!!
+ *
+ * void (*set_par)(struct atafb_par *par)
  *   Set the hardware according to 'par'.
- *   
- * int (*getcolreg)( unsigned regno, unsigned *red,
- *                   unsigned *green, unsigned *blue,
- *                   unsigned *transp, struct fb_info *info )
- *   Read a single color register and split it into
- *   colors/transparent. Return != 0 for invalid regno.
  *
  * void (*set_screen_base)(void *s_base)
  *   Set the base address of the displayed frame buffer. Only called
  *   if yres_virtual > yres or xres_virtual > xres.
  *
- * int (*blank)( int blank_mode )
- *   Blank the screen if blank_mode!=0, else unblank. If blank==NULL then
+ * int (*blank)(int blank_mode)
+ *   Blank the screen if blank_mode != 0, else unblank. If blank == NULL then
  *   the caller blanks by setting the CLUT to all black. Return 0 if blanking
  *   succeeded, !=0 if un-/blanking failed due to e.g. a video mode which
  *   doesn't support it. Implements VESA suspend and powerdown modes on
  *   hardware that supports disabling hsync/vsync:
- *       blank_mode==2: suspend vsync, 3:suspend hsync, 4: powerdown.
+ *       blank_mode == 2: suspend vsync, 3:suspend hsync, 4: powerdown.
  */
 
 static struct fb_hwswitch {
-	int  (*detect)( void );
-	int  (*encode_fix)( struct fb_fix_screeninfo *fix,
-						struct atafb_par *par );
-	int  (*decode_var)( struct fb_var_screeninfo *var,
-						struct atafb_par *par );
-	int  (*encode_var)( struct fb_var_screeninfo *var,
-						struct atafb_par *par );
-	void (*get_par)( struct atafb_par *par );
-	void (*set_par)( struct atafb_par *par );
-	int  (*getcolreg)( unsigned regno, unsigned *red,
-					   unsigned *green, unsigned *blue,
-					   unsigned *transp, struct fb_info *info );
+	int (*detect)(void);
+	int (*encode_fix)(struct fb_fix_screeninfo *fix,
+			  struct atafb_par *par);
+	int (*decode_var)(struct fb_var_screeninfo *var,
+			  struct atafb_par *par);
+	int (*encode_var)(struct fb_var_screeninfo *var,
+			  struct atafb_par *par);
+	void (*get_par)(struct atafb_par *par);
+	void (*set_par)(struct atafb_par *par);
 	void (*set_screen_base)(void *s_base);
-	int  (*blank)( int blank_mode );
-	int  (*pan_display)( struct fb_var_screeninfo *var,
-						 struct atafb_par *par);
+	int (*blank)(int blank_mode);
+	int (*pan_display)(struct fb_var_screeninfo *var,
+			   struct fb_info *info);
 } *fbhw;
 
-static char *autodetect_names[] = {"autodetect", NULL};
-static char *stlow_names[] = {"stlow", NULL};
-static char *stmid_names[] = {"stmid", "default5", NULL};
-static char *sthigh_names[] = {"sthigh", "default4", NULL};
-static char *ttlow_names[] = {"ttlow", NULL};
-static char *ttmid_names[]= {"ttmid", "default1", NULL};
-static char *tthigh_names[]= {"tthigh", "default2", NULL};
-static char *vga2_names[] = {"vga2", NULL};
-static char *vga4_names[] = {"vga4", NULL};
-static char *vga16_names[] = {"vga16", "default3", NULL};
-static char *vga256_names[] = {"vga256", NULL};
-static char *falh2_names[] = {"falh2", NULL};
-static char *falh16_names[] = {"falh16", NULL};
+static char *autodetect_names[] = { "autodetect", NULL };
+static char *stlow_names[] = { "stlow", NULL };
+static char *stmid_names[] = { "stmid", "default5", NULL };
+static char *sthigh_names[] = { "sthigh", "default4", NULL };
+static char *ttlow_names[] = { "ttlow", NULL };
+static char *ttmid_names[] = { "ttmid", "default1", NULL };
+static char *tthigh_names[] = { "tthigh", "default2", NULL };
+static char *vga2_names[] = { "vga2", NULL };
+static char *vga4_names[] = { "vga4", NULL };
+static char *vga16_names[] = { "vga16", "default3", NULL };
+static char *vga256_names[] = { "vga256", NULL };
+static char *falh2_names[] = { "falh2", NULL };
+static char *falh16_names[] = { "falh16", NULL };
 
 static char **fb_var_names[] = {
-	/* Writing the name arrays directly in this array (via "(char *[]){...}")
-	 * crashes gcc 2.5.8 (sigsegv) if the inner array
-	 * contains more than two items. I've also seen that all elements
-	 * were identical to the last (my cross-gcc) :-(*/
 	autodetect_names,
 	stlow_names,
 	stmid_names,
@@ -353,18 +432,17 @@ static char **fb_var_names[] = {
 	falh2_names,
 	falh16_names,
 	NULL
-	/* ,NULL */ /* this causes a sigsegv on my gcc-2.5.8 */
 };
 
 static struct fb_var_screeninfo atafb_predefined[] = {
- 	/*
- 	 * yres_virtual==0 means use hw-scrolling if possible, else yres
- 	 */
- 	{ /* autodetect */
-	  0, 0, 0, 0, 0, 0, 0, 0,   		/* xres-grayscale */
-	  {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, 	/* red green blue tran*/
+	/*
+	 * yres_virtual == 0 means use hw-scrolling if possible, else yres
+	 */
+	{ /* autodetect */
+	  0, 0, 0, 0, 0, 0, 0, 0,		/* xres-grayscale */
+	  {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0},	/* red green blue tran*/
 	  0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 },
- 	{ /* st low */
+	{ /* st low */
 	  320, 200, 320, 0, 0, 0, 4, 0,
 	  {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0},
 	  0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 },
@@ -414,27 +492,100 @@ static struct fb_var_screeninfo atafb_predefined[] = {
 	  0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 },
 };
 
-static int num_atafb_predefined=ARRAY_SIZE(atafb_predefined);
+static int num_atafb_predefined = ARRAY_SIZE(atafb_predefined);
 
+static struct fb_videomode atafb_modedb[] __initdata = {
+	/*
+	 *  Atari Video Modes
+	 *
+	 *  If you change these, make sure to update DEFMODE_* as well!
+	 */
 
-static int
-get_video_mode(char *vname)
+	/*
+	 *  ST/TT Video Modes
+	 */
+
+	{
+		/* 320x200, 15 kHz, 60 Hz (ST low) */
+		"st-low", 60, 320, 200, 32000, 32, 16, 31, 14, 96, 4,
+		0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
+	}, {
+		/* 640x200, 15 kHz, 60 Hz (ST medium) */
+		"st-mid", 60, 640, 200, 32000, 32, 16, 31, 14, 96, 4,
+		0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
+	}, {
+		/* 640x400, 30.25 kHz, 63.5 Hz (ST high) */
+		"st-high", 63, 640, 400, 32000, 128, 0, 40, 14, 128, 4,
+		0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
+	}, {
+		/* 320x480, 15 kHz, 60 Hz (TT low) */
+		"tt-low", 60, 320, 480, 31041, 120, 100, 8, 16, 140, 30,
+		0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
+	}, {
+		/* 640x480, 29 kHz, 57 Hz (TT medium) */
+		"tt-mid", 60, 640, 480, 31041, 120, 100, 8, 16, 140, 30,
+		0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
+	}, {
+		/* 1280x960, 29 kHz, 60 Hz (TT high) */
+		"tt-high", 57, 640, 960, 31041, 120, 100, 8, 16, 140, 30,
+		0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
+	},
+
+	/*
+	 *  VGA Video Modes
+	 */
+
+	{
+		/* 640x480, 31 kHz, 60 Hz (VGA) */
+		"vga", 63.5, 640, 480, 32000, 18, 42, 31, 11, 96, 3,
+		0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
+	}, {
+		/* 640x400, 31 kHz, 70 Hz (VGA) */
+		"vga70", 70, 640, 400, 32000, 18, 42, 31, 11, 96, 3,
+		FB_SYNC_VERT_HIGH_ACT | FB_SYNC_COMP_HIGH_ACT, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
+	},
+
+	/*
+	 *  Falcon HiRes Video Modes
+	 */
+
+	{
+		/* 896x608, 31 kHz, 60 Hz (Falcon High) */
+		"falh", 60, 896, 608, 32000, 18, 42, 31, 1, 96,3,
+		0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
+	},
+};
+
+#define NUM_TOTAL_MODES  ARRAY_SIZE(atafb_modedb)
+
+static char *mode_option __initdata = NULL;
+
+ /* default modes */
+
+#define DEFMODE_TT	5		/* "tt-high" for TT */
+#define DEFMODE_F30	7		/* "vga70" for Falcon */
+#define DEFMODE_STE	2		/* "st-high" for ST/E */
+#define DEFMODE_EXT	6		/* "vga" for external */
+
+
+static int get_video_mode(char *vname)
 {
-    char ***name_list;
-    char **name;
-    int i;
-    name_list=fb_var_names;
-    for (i = 0 ; i < num_atafb_predefined ; i++) {
-	name=*(name_list++);
-	if (! name || ! *name)
-	    break;
-	while (*name) {
-	    if (! strcmp(vname, *name))
-		return i+1;
-	    name++;
+	char ***name_list;
+	char **name;
+	int i;
+
+	name_list = fb_var_names;
+	for (i = 0; i < num_atafb_predefined; i++) {
+		name = *name_list++;
+		if (!name || !*name)
+			break;
+		while (*name) {
+			if (!strcmp(vname, *name))
+				return i + 1;
+			name++;
+		}
 	}
-    }
-    return 0;
+	return 0;
 }
 
 
@@ -443,93 +594,84 @@ get_video_mode(char *vname)
 
 #ifdef ATAFB_TT
 
-static int tt_encode_fix( struct fb_fix_screeninfo *fix,
-						  struct atafb_par *par )
-
+static int tt_encode_fix(struct fb_fix_screeninfo *fix, struct atafb_par *par)
 {
 	int mode;
 
-	strcpy(fix->id,"Atari Builtin");
+	strcpy(fix->id, "Atari Builtin");
 	fix->smem_start = (unsigned long)real_screen_base;
 	fix->smem_len = screen_len;
-	fix->type=FB_TYPE_INTERLEAVED_PLANES;
-	fix->type_aux=2;
-	fix->visual=FB_VISUAL_PSEUDOCOLOR;
+	fix->type = FB_TYPE_INTERLEAVED_PLANES;
+	fix->type_aux = 2;
+	fix->visual = FB_VISUAL_PSEUDOCOLOR;
 	mode = par->hw.tt.mode & TT_SHIFTER_MODEMASK;
 	if (mode == TT_SHIFTER_TTHIGH || mode == TT_SHIFTER_STHIGH) {
-		fix->type=FB_TYPE_PACKED_PIXELS;
-		fix->type_aux=0;
+		fix->type = FB_TYPE_PACKED_PIXELS;
+		fix->type_aux = 0;
 		if (mode == TT_SHIFTER_TTHIGH)
-			fix->visual=FB_VISUAL_MONO01;
+			fix->visual = FB_VISUAL_MONO01;
 	}
-	fix->xpanstep=0;
-	fix->ypanstep=1;
-	fix->ywrapstep=0;
+	fix->xpanstep = 0;
+	fix->ypanstep = 1;
+	fix->ywrapstep = 0;
 	fix->line_length = 0;
 	fix->accel = FB_ACCEL_ATARIBLITT;
 	return 0;
 }
 
-
-static int tt_decode_var( struct fb_var_screeninfo *var,
-						  struct atafb_par *par )
+static int tt_decode_var(struct fb_var_screeninfo *var, struct atafb_par *par)
 {
-	int xres=var->xres;
-	int yres=var->yres;
-	int bpp=var->bits_per_pixel;
+	int xres = var->xres;
+	int yres = var->yres;
+	int bpp = var->bits_per_pixel;
 	int linelen;
 	int yres_virtual = var->yres_virtual;
 
 	if (mono_moni) {
-		if (bpp > 1 || xres > sttt_xres*2 || yres >tt_yres*2)
+		if (bpp > 1 || xres > sttt_xres * 2 || yres > tt_yres * 2)
 			return -EINVAL;
-		par->hw.tt.mode=TT_SHIFTER_TTHIGH;
-		xres=sttt_xres*2;
-		yres=tt_yres*2;
-		bpp=1;
+		par->hw.tt.mode = TT_SHIFTER_TTHIGH;
+		xres = sttt_xres * 2;
+		yres = tt_yres * 2;
+		bpp = 1;
 	} else {
 		if (bpp > 8 || xres > sttt_xres || yres > tt_yres)
 			return -EINVAL;
 		if (bpp > 4) {
-			if (xres > sttt_xres/2 || yres > tt_yres)
+			if (xres > sttt_xres / 2 || yres > tt_yres)
 				return -EINVAL;
-			par->hw.tt.mode=TT_SHIFTER_TTLOW;
-			xres=sttt_xres/2;
-			yres=tt_yres;
-			bpp=8;
-		}
-		else if (bpp > 2) {
+			par->hw.tt.mode = TT_SHIFTER_TTLOW;
+			xres = sttt_xres / 2;
+			yres = tt_yres;
+			bpp = 8;
+		} else if (bpp > 2) {
 			if (xres > sttt_xres || yres > tt_yres)
 				return -EINVAL;
-			if (xres > sttt_xres/2 || yres > st_yres/2) {
-				par->hw.tt.mode=TT_SHIFTER_TTMID;
-				xres=sttt_xres;
-				yres=tt_yres;
-				bpp=4;
-			}
-			else {
-				par->hw.tt.mode=TT_SHIFTER_STLOW;
-				xres=sttt_xres/2;
-				yres=st_yres/2;
-				bpp=4;
+			if (xres > sttt_xres / 2 || yres > st_yres / 2) {
+				par->hw.tt.mode = TT_SHIFTER_TTMID;
+				xres = sttt_xres;
+				yres = tt_yres;
+				bpp = 4;
+			} else {
+				par->hw.tt.mode = TT_SHIFTER_STLOW;
+				xres = sttt_xres / 2;
+				yres = st_yres / 2;
+				bpp = 4;
 			}
-		}
-		else if (bpp > 1) {
-			if (xres > sttt_xres || yres > st_yres/2)
+		} else if (bpp > 1) {
+			if (xres > sttt_xres || yres > st_yres / 2)
 				return -EINVAL;
-			par->hw.tt.mode=TT_SHIFTER_STMID;
-			xres=sttt_xres;
-			yres=st_yres/2;
-			bpp=2;
-		}
-		else if (var->xres > sttt_xres || var->yres > st_yres) {
+			par->hw.tt.mode = TT_SHIFTER_STMID;
+			xres = sttt_xres;
+			yres = st_yres / 2;
+			bpp = 2;
+		} else if (var->xres > sttt_xres || var->yres > st_yres) {
 			return -EINVAL;
-		}
-		else {
-			par->hw.tt.mode=TT_SHIFTER_STHIGH;
-			xres=sttt_xres;
-			yres=st_yres;
-			bpp=1;
+		} else {
+			par->hw.tt.mode = TT_SHIFTER_STHIGH;
+			xres = sttt_xres;
+			yres = st_yres;
+			bpp = 1;
 		}
 	}
 	if (yres_virtual <= 0)
@@ -537,10 +679,10 @@ static int tt_decode_var( struct fb_var_screeninfo *var,
 	else if (yres_virtual < yres)
 		yres_virtual = yres;
 	if (var->sync & FB_SYNC_EXT)
-		par->hw.tt.sync=0;
+		par->hw.tt.sync = 0;
 	else
-		par->hw.tt.sync=1;
-	linelen=xres*bpp/8;
+		par->hw.tt.sync = 1;
+	linelen = xres * bpp / 8;
 	if (yres_virtual * linelen > screen_len && screen_len)
 		return -EINVAL;
 	if (yres * linelen > screen_len && screen_len)
@@ -552,154 +694,123 @@ static int tt_decode_var( struct fb_var_screeninfo *var,
 	return 0;
 }
 
-static int tt_encode_var( struct fb_var_screeninfo *var,
-						  struct atafb_par *par )
+static int tt_encode_var(struct fb_var_screeninfo *var, struct atafb_par *par)
 {
 	int linelen;
 	memset(var, 0, sizeof(struct fb_var_screeninfo));
-	var->red.offset=0;
-	var->red.length=4;
-	var->red.msb_right=0;
-	var->grayscale=0;
-
-	var->pixclock=31041;
-	var->left_margin=120;		/* these may be incorrect 	*/
-	var->right_margin=100;
-	var->upper_margin=8;
-	var->lower_margin=16;
-	var->hsync_len=140;
-	var->vsync_len=30;
-
-	var->height=-1;
-	var->width=-1;
+	var->red.offset = 0;
+	var->red.length = 4;
+	var->red.msb_right = 0;
+	var->grayscale = 0;
+
+	var->pixclock = 31041;
+	var->left_margin = 120;		/* these may be incorrect */
+	var->right_margin = 100;
+	var->upper_margin = 8;
+	var->lower_margin = 16;
+	var->hsync_len = 140;
+	var->vsync_len = 30;
+
+	var->height = -1;
+	var->width = -1;
 
 	if (par->hw.tt.sync & 1)
-		var->sync=0;
+		var->sync = 0;
 	else
-		var->sync=FB_SYNC_EXT;
+		var->sync = FB_SYNC_EXT;
 
 	switch (par->hw.tt.mode & TT_SHIFTER_MODEMASK) {
 	case TT_SHIFTER_STLOW:
-		var->xres=sttt_xres/2;
-		var->xres_virtual=sttt_xres_virtual/2;
-		var->yres=st_yres/2;
-		var->bits_per_pixel=4;
+		var->xres = sttt_xres / 2;
+		var->xres_virtual = sttt_xres_virtual / 2;
+		var->yres = st_yres / 2;
+		var->bits_per_pixel = 4;
 		break;
 	case TT_SHIFTER_STMID:
-		var->xres=sttt_xres;
-		var->xres_virtual=sttt_xres_virtual;
-		var->yres=st_yres/2;
-		var->bits_per_pixel=2;
+		var->xres = sttt_xres;
+		var->xres_virtual = sttt_xres_virtual;
+		var->yres = st_yres / 2;
+		var->bits_per_pixel = 2;
 		break;
 	case TT_SHIFTER_STHIGH:
-		var->xres=sttt_xres;
-		var->xres_virtual=sttt_xres_virtual;
-		var->yres=st_yres;
-		var->bits_per_pixel=1;
+		var->xres = sttt_xres;
+		var->xres_virtual = sttt_xres_virtual;
+		var->yres = st_yres;
+		var->bits_per_pixel = 1;
 		break;
 	case TT_SHIFTER_TTLOW:
-		var->xres=sttt_xres/2;
-		var->xres_virtual=sttt_xres_virtual/2;
-		var->yres=tt_yres;
-		var->bits_per_pixel=8;
+		var->xres = sttt_xres / 2;
+		var->xres_virtual = sttt_xres_virtual / 2;
+		var->yres = tt_yres;
+		var->bits_per_pixel = 8;
 		break;
 	case TT_SHIFTER_TTMID:
-		var->xres=sttt_xres;
-		var->xres_virtual=sttt_xres_virtual;
-		var->yres=tt_yres;
-		var->bits_per_pixel=4;
+		var->xres = sttt_xres;
+		var->xres_virtual = sttt_xres_virtual;
+		var->yres = tt_yres;
+		var->bits_per_pixel = 4;
 		break;
 	case TT_SHIFTER_TTHIGH:
-		var->red.length=0;
-		var->xres=sttt_xres*2;
-		var->xres_virtual=sttt_xres_virtual*2;
-		var->yres=tt_yres*2;
-		var->bits_per_pixel=1;
+		var->red.length = 0;
+		var->xres = sttt_xres * 2;
+		var->xres_virtual = sttt_xres_virtual * 2;
+		var->yres = tt_yres * 2;
+		var->bits_per_pixel = 1;
 		break;
-	}		
-	var->blue=var->green=var->red;
-	var->transp.offset=0;
-	var->transp.length=0;
-	var->transp.msb_right=0;
-	linelen=var->xres_virtual * var->bits_per_pixel / 8;
-	if (! use_hwscroll)
-		var->yres_virtual=var->yres;
+	}
+	var->blue = var->green = var->red;
+	var->transp.offset = 0;
+	var->transp.length = 0;
+	var->transp.msb_right = 0;
+	linelen = var->xres_virtual * var->bits_per_pixel / 8;
+	if (!use_hwscroll)
+		var->yres_virtual = var->yres;
 	else if (screen_len) {
 		if (par->yres_virtual)
 			var->yres_virtual = par->yres_virtual;
 		else
-			/* yres_virtual==0 means use maximum */
+			/* yres_virtual == 0 means use maximum */
 			var->yres_virtual = screen_len / linelen;
 	} else {
 		if (hwscroll < 0)
 			var->yres_virtual = 2 * var->yres;
 		else
-			var->yres_virtual=var->yres+hwscroll * 16;
+			var->yres_virtual = var->yres + hwscroll * 16;
 	}
-	var->xoffset=0;
+	var->xoffset = 0;
 	if (screen_base)
-		var->yoffset=(par->screen_base - screen_base)/linelen;
+		var->yoffset = (par->screen_base - screen_base) / linelen;
 	else
-		var->yoffset=0;
-	var->nonstd=0;
-	var->activate=0;
-	var->vmode=FB_VMODE_NONINTERLACED;
+		var->yoffset = 0;
+	var->nonstd = 0;
+	var->activate = 0;
+	var->vmode = FB_VMODE_NONINTERLACED;
 	return 0;
 }
 
-
-static void tt_get_par( struct atafb_par *par )
+static void tt_get_par(struct atafb_par *par)
 {
 	unsigned long addr;
-	par->hw.tt.mode=shifter_tt.tt_shiftmode;
-	par->hw.tt.sync=shifter.syncmode;
+	par->hw.tt.mode = shifter_tt.tt_shiftmode;
+	par->hw.tt.sync = shifter.syncmode;
 	addr = ((shifter.bas_hi & 0xff) << 16) |
 	       ((shifter.bas_md & 0xff) << 8)  |
 	       ((shifter.bas_lo & 0xff));
 	par->screen_base = phys_to_virt(addr);
 }
 
-static void tt_set_par( struct atafb_par *par )
+static void tt_set_par(struct atafb_par *par)
 {
-	shifter_tt.tt_shiftmode=par->hw.tt.mode;
-	shifter.syncmode=par->hw.tt.sync;
+	shifter_tt.tt_shiftmode = par->hw.tt.mode;
+	shifter.syncmode = par->hw.tt.sync;
 	/* only set screen_base if really necessary */
 	if (current_par.screen_base != par->screen_base)
 		fbhw->set_screen_base(par->screen_base);
 }
 
-
-static int tt_getcolreg(unsigned regno, unsigned *red,
-			unsigned *green, unsigned *blue,
-			unsigned *transp, struct fb_info *info)
-{
-	int t, col;
-
-	if ((shifter_tt.tt_shiftmode & TT_SHIFTER_MODEMASK) == TT_SHIFTER_STHIGH)
-		regno += 254;
-	if (regno > 255)
-		return 1;
-	t = tt_palette[regno];
-	col = t & 15;
-	col |= col << 4;
-	col |= col << 8;
-	*blue = col;
-	col = (t >> 4) & 15;
-	col |= col << 4;
-	col |= col << 8;
-	*green = col;
-	col = (t >> 8) & 15;
-	col |= col << 4;
-	col |= col << 8;
-	*red = col;
-	*transp = 0;
-	return 0;
-}
-
-
-static int tt_setcolreg(unsigned regno, unsigned red,
-			unsigned green, unsigned blue,
-			unsigned transp, struct fb_info *info)
+static int tt_setcolreg(unsigned int regno, unsigned int red,
+			unsigned int green, unsigned int blue,
+			unsigned int transp, struct fb_info *info)
 {
 	if ((shifter_tt.tt_shiftmode & TT_SHIFTER_MODEMASK) == TT_SHIFTER_STHIGH)
 		regno += 254;
@@ -708,15 +819,14 @@ static int tt_setcolreg(unsigned regno, unsigned red,
 	tt_palette[regno] = (((red >> 12) << 8) | ((green >> 12) << 4) |
 			     (blue >> 12));
 	if ((shifter_tt.tt_shiftmode & TT_SHIFTER_MODEMASK) ==
-		TT_SHIFTER_STHIGH && regno == 254)
+	    TT_SHIFTER_STHIGH && regno == 254)
 		tt_palette[0] = 0;
 	return 0;
 }
 
-						  
-static int tt_detect( void )
-
-{	struct atafb_par par;
+static int tt_detect(void)
+{
+	struct atafb_par par;
 
 	/* Determine the connected monitor: The DMA sound must be
 	 * disabled before reading the MFP GPIP, because the Sound
@@ -726,9 +836,9 @@ static int tt_detect( void )
 	 * announced that the Eagle is TT compatible, but only the PCM is
 	 * missing...
 	 */
-	if (ATARIHW_PRESENT(PCM_8BIT)) { 
+	if (ATARIHW_PRESENT(PCM_8BIT)) {
 		tt_dmasnd.ctrl = DMASND_CTRL_OFF;
-		udelay(20);	/* wait a while for things to settle down */
+		udelay(20);		/* wait a while for things to settle down */
 	}
 	mono_moni = (mfp.par_dt_reg & 0x80) == 0;
 
@@ -755,19 +865,24 @@ static struct pixel_clock {
 	unsigned long f;	/* f/[Hz] */
 	unsigned long t;	/* t/[ps] (=1/f) */
 	int right, hsync, left;	/* standard timing in clock cycles, not pixel */
-		/* hsync initialized in falcon_detect() */
+	/* hsync initialized in falcon_detect() */
 	int sync_mask;		/* or-mask for hw.falcon.sync to set this clock */
 	int control_mask;	/* ditto, for hw.falcon.vid_control */
-}
-f25  = {25175000, 39721, 18, 0, 42, 0x0, VCO_CLOCK25},
-f32  = {32000000, 31250, 18, 0, 42, 0x0, 0},
-fext = {       0,     0, 18, 0, 42, 0x1, 0};
+} f25 = {
+	25175000, 39721, 18, 0, 42, 0x0, VCO_CLOCK25
+}, f32 = {
+	32000000, 31250, 18, 0, 42, 0x0, 0
+}, fext = {
+	0, 0, 18, 0, 42, 0x1, 0
+};
 
 /* VIDEL-prescale values [mon_type][pixel_length from VCO] */
-static int vdl_prescale[4][3] = {{4,2,1}, {4,2,1}, {4,2,2}, {4,2,1}};
+static int vdl_prescale[4][3] = {
+	{ 4,2,1 }, { 4,2,1 }, { 4,2,2 }, { 4,2,1 }
+};
 
 /* Default hsync timing [mon_type] in picoseconds */
-static long h_syncs[4] = {3000000, 4875000, 4000000, 4875000};
+static long h_syncs[4] = { 3000000, 4875000, 4000000, 4875000 };
 
 #ifdef FBCON_HAS_CFB16
 static u16 fbcon_cfb16_cmap[16];
@@ -775,12 +890,12 @@ static u16 fbcon_cfb16_cmap[16];
 
 static inline int hxx_prescale(struct falcon_hw *hw)
 {
-	return hw->ste_mode ? 16 :
-		   vdl_prescale[mon_type][hw->vid_mode >> 2 & 0x3];
+	return hw->ste_mode ? 16
+			    : vdl_prescale[mon_type][hw->vid_mode >> 2 & 0x3];
 }
 
-static int falcon_encode_fix( struct fb_fix_screeninfo *fix,
-							  struct atafb_par *par )
+static int falcon_encode_fix(struct fb_fix_screeninfo *fix,
+			     struct atafb_par *par)
 {
 	strcpy(fix->id, "Atari Builtin");
 	fix->smem_start = (unsigned long)real_screen_base;
@@ -796,8 +911,7 @@ static int falcon_encode_fix( struct fb_fix_screeninfo *fix,
 		fix->type_aux = 0;
 		/* no smooth scrolling with longword aligned video mem */
 		fix->xpanstep = 32;
-	}
-	else if (par->hw.falcon.f_shift & 0x100) {
+	} else if (par->hw.falcon.f_shift & 0x100) {
 		fix->type = FB_TYPE_PACKED_PIXELS;
 		fix->type_aux = 0;
 		/*