diff options
Diffstat (limited to 'drivers/video/atafb.c')
| -rw-r--r-- | drivers/video/atafb.c | 3098 |
1 files changed, 0 insertions, 3098 deletions
diff --git a/drivers/video/atafb.c b/drivers/video/atafb.c deleted file mode 100644 index 15ec1295bc2..00000000000 --- a/drivers/video/atafb.c +++ /dev/null @@ -1,3098 +0,0 @@ -/* - * 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. - * - * History: - * - 03 Jan 95: Original version by Martin Schaller: The TT driver and - * all the device independent stuff - * - 09 Jan 95: Roman: I've added the hardware abstraction (hw_switch) - * and wrote the Falcon, ST(E), and External drivers - * based on the original TT driver. - * - 07 May 95: Martin: Added colormap operations for the external driver - * - 21 May 95: Martin: Added support for overscan - * Andreas: some bug fixes for this - * - Jul 95: Guenther Kelleter <guenther@pool.informatik.rwth-aachen.de>: - * Programmable Falcon video modes - * (thanks to Christian Cartus for documentation - * of VIDEL registers). - * - 27 Dec 95: Guenther: Implemented user definable video modes "user[0-7]" - * on minor 24...31. "user0" may be set on commandline by - * "R<x>;<y>;<depth>". (Makes sense only on Falcon) - * Video mode switch on Falcon now done at next VBL interrupt - * to avoid the annoying right shift of the screen. - * - 23 Sep 97: Juergen: added xres_virtual for cards like ProMST - * The external-part is legacy, therefore hardware-specific - * functions like panning/hardwarescrolling/blanking isn't - * supported. - * - 29 Sep 97: Juergen: added Romans suggestion for pan_display - * (var->xoffset was changed even if no set_screen_base avail.) - * - 05 Oct 97: Juergen: extfb (PACKED_PIXEL) is FB_PSEUDOCOLOR 'cause - * we know how to set the colors - * ext_*palette: read from ext_colors (former MV300_colors) - * write to ext_colors and RAMDAC - * - * To do: - * - For the Falcon it is not possible to set random video modes on - * SM124 and SC/TV, only the bootup resolution is supported. - * - */ - -#define ATAFB_TT -#define ATAFB_STE -#define ATAFB_EXT -#define ATAFB_FALCON - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/tty.h> -#include <linux/slab.h> -#include <linux/delay.h> -#include <linux/init.h> -#include <linux/interrupt.h> - -#include <asm/setup.h> -#include <asm/uaccess.h> -#include <asm/pgtable.h> -#include <asm/irq.h> -#include <asm/io.h> - -#include <asm/atarihw.h> -#include <asm/atariints.h> -#include <asm/atari_stram.h> - -#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> - - -#define SWITCH_ACIA 0x01 /* modes for switch on OverScan */ -#define SWITCH_SND6 0x40 -#define SWITCH_SND7 0x80 -#define SWITCH_NONE 0x00 - - -#define up(x, r) (((x) + (r) - 1) & ~((r)-1)) - - -static int default_par=0; /* default resolution (0=none) */ - -static unsigned long default_mem_req=0; - -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 struct atafb_par { - void *screen_base; - int yres_virtual; -#if defined ATAFB_TT || defined ATAFB_STE - union { - struct { - int mode; - int sync; - } tt, st; -#endif -#ifdef ATAFB_FALCON - struct falcon_hw { - /* Here are fields for storing a video mode, as direct - * parameters for the hardware. - */ - short sync; - short line_width; - short line_offset; - short st_shift; - short f_shift; - short vid_control; - short vid_mode; - short xoffset; - short hht, hbb, hbe, hdb, hde, hss; - short vft, vbb, vbe, vdb, vde, vss; - /* auxiliary information */ - short mono; - short ste_mode; - short bpp; - } falcon; -#endif - /* Nothing needed for external mode */ - } hw; -} current_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; - -#ifdef ATAFB_FALCON -#define HHT hw.falcon.hht -#define HBB hw.falcon.hbb -#define HBE hw.falcon.hbe -#define HDB hw.falcon.hdb -#define HDE hw.falcon.hde -#define HSS hw.falcon.hss -#define VFT hw.falcon.vft -#define VBB hw.falcon.vbb -#define VBE hw.falcon.vbe -#define VDB hw.falcon.vdb -#define VDE hw.falcon.vde -#define VSS hw.falcon.vss -#define VCO_CLOCK25 0x04 -#define VCO_CSYPOS 0x10 -#define VCO_VSYPOS 0x20 -#define VCO_HSYPOS 0x40 -#define VCO_SHORTOFFS 0x100 -#define VMO_DOUBLE 0x01 -#define VMO_INTER 0x02 -#define VMO_PREMASK 0x0c -#endif - -static struct fb_info fb_info; - -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 mono_moni=0; - -static struct display disp; - - -#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; -*/ - -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. -*/ - -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 }; - -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; - -extern int fontheight_8x8; -extern int fontwidth_8x8; -extern unsigned char fontdata_8x8[]; - -extern int fontheight_8x16; -extern int fontwidth_8x16; -extern unsigned char fontdata_8x16[]; - -/* ++roman: This structure abstracts from the underlying hardware (ST(e), - * TT, or Falcon. - * - * 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 ) - * 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 ) - * 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, - * horizontal timing, vertical timing. - * - * 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 ) - * Fill the hardware's 'par' structure. - * - * 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 - * 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. - */ - -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 ); - void (*set_screen_base)(void *s_base); - int (*blank)( int blank_mode ); - int (*pan_display)( struct fb_var_screeninfo *var, - struct atafb_par *par); -} *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 **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, - sthigh_names, - ttlow_names, - ttmid_names, - tthigh_names, - vga2_names, - vga4_names, - vga16_names, - vga256_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*/ - 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, - { /* 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 }, - { /* st mid */ - 640, 200, 640, 0, 0, 0, 2, 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 }, - { /* st high */ - 640, 400, 640, 0, 0, 0, 1, 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 }, - { /* tt low */ - 320, 480, 320, 0, 0, 0, 8, 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 }, - { /* tt mid */ - 640, 480, 640, 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 }, - { /* tt high */ - 1280, 960, 1280, 0, 0, 0, 1, 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 }, - { /* vga2 */ - 640, 480, 640, 0, 0, 0, 1, 0, - {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, - 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, - { /* vga4 */ - 640, 480, 640, 0, 0, 0, 2, 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 }, - { /* vga16 */ - 640, 480, 640, 0, 0, 0, 4, 0, - {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, - 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, - { /* vga256 */ - 640, 480, 640, 0, 0, 0, 8, 0, - {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, - 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, - { /* falh2 */ - 896, 608, 896, 0, 0, 0, 1, 0, - {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, - 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, - { /* falh16 */ - 896, 608, 896, 0, 0, 0, 4, 0, - {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, - 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, -}; - -static int num_atafb_predefined=ARRAY_SIZE(atafb_predefined); - - -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++; - } - } - return 0; -} - - - -/* ------------------- TT specific functions ---------------------- */ - -#ifdef ATAFB_TT - -static int tt_encode_fix( struct fb_fix_screeninfo *fix, - struct atafb_par *par ) - -{ - int mode; - - 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; - 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; - if (mode == TT_SHIFTER_TTHIGH) - fix->visual=FB_VISUAL_MONO01; - } - 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 ) -{ - 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) - return -EINVAL; - 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) - return -EINVAL; - 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; - } - } - 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) { - return -EINVAL; - } - else { - par->hw.tt.mode=TT_SHIFTER_STHIGH; - xres=sttt_xres; - yres=st_yres; - bpp=1; - } - } - if (yres_virtual <= 0) - yres_virtual = 0; - else if (yres_virtual < yres) - yres_virtual = yres; - if (var->sync & FB_SYNC_EXT) - par->hw.tt.sync=0; - else - 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) - return -EINVAL; - if (var->yoffset + yres > yres_virtual && yres_virtual) - return -EINVAL; - par->yres_virtual = yres_virtual; - par->screen_base = screen_base + var->yoffset * linelen; - return 0; -} - -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; - - if (par->hw.tt.sync & 1) - var->sync=0; - else - 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; - 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; - break; - case TT_SHIFTER_STHIGH: - 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; - break; - case TT_SHIFTER_TTMID: - 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; - 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; - else if (screen_len) { - if (par->yres_virtual) - var->yres_virtual = par->yres_virtual; - else - /* 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->xoffset=0; - if (screen_base) - var->yoffset=(par->screen_base - screen_base)/linelen; - else - 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 ) -{ - unsigned long addr; - 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 ) -{ - 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) -{ - if ((shifter_tt.tt_shiftmode & TT_SHIFTER_MODEMASK) == TT_SHIFTER_STHIGH) - regno += 254; - if (regno > 255) - return 1; - 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_palette[0] = 0; - return 0; -} - - -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 - * Done Signal and the Monochrome Detect are XORed together! - * - * Even on a TT, we should look if there is a DMA sound. It was - * announced that the Eagle is TT compatible, but only the PCM is - * missing... - */ - if (ATARIHW_PRESENT(PCM_8BIT)) { - tt_dmasnd.ctrl = DMASND_CTRL_OFF; - udelay(20); /* wait a while for things to settle down */ - } - mono_moni = (mfp.par_dt_reg & 0x80) == 0; - - tt_get_par(&par); - tt_encode_var(&atafb_predefined[0], &par); - - return 1; -} - -#endif /* ATAFB_TT */ - -/* ------------------- Falcon specific functions ---------------------- */ - -#ifdef ATAFB_FALCON - -static int mon_type; /* Falcon connected monitor */ -static int f030_bus_width; /* Falcon ram bus width (for vid_control) */ -#define F_MON_SM 0 -#define F_MON_SC 1 -#define F_MON_VGA 2 -#define F_MON_TV 3 - -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() */ - 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}; - -/* 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}}; - -/* Default hsync timing [mon_type] in picoseconds */ -static long h_syncs[4] = {3000000, 4875000, 4000000, 4875000}; - -#ifdef FBCON_HAS_CFB16 -static u16 fbcon_cfb16_cmap[16]; -#endif - -static inline int hxx_prescale(struct falcon_hw *hw) -{ - 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 ) -{ - 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->xpanstep = 1; - fix->ypanstep = 1; - fix->ywrapstep = 0; - if (par->hw.falcon.mono) { - fix->type = FB_TYPE_PACKED_PIXELS; - fix->type_aux = 0; - /* no smooth scrolling with longword aligned video mem */ - fix->xpanstep = 32; - } - else if (par->hw.falcon.f_shift & 0x100) { - fix->type = FB_TYPE_PACKED_PIXELS; - fix->type_aux = 0; - /* Is this ok or should it be DIRECTCOLOR? */ - fix->visual = FB_VISUAL_TRUECOLOR; - fix->xpanstep = 2; - } - fix->line_length = 0; - fix->accel = FB_ACCEL_ATARIBLITT; - return 0; -} - - -static int falcon_decode_var( struct fb_var_screeninfo *var, - struct atafb_par *par ) -{ - int bpp = var->bits_per_pixel; - int xres = var->xres; - int yres = var->yres; - int xres_virtual = var->xres_virtual; - int yres_virtual = var->yres_virtual; - int left_margin, right_margin, hsync_len; - int upper_margin, lower_margin, vsync_len; - int linelen; - int interlace = 0, doubleline = 0; - struct pixel_clock *pclock; - int plen; /* width of pixel in clock cycles */ - int xstretch; - int prescale; - int longoffset = 0; - int hfreq, vfreq; - -/* - 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, - horizontal timing, vertical timing. - - There is a maximum of screen resolution determined by pixelclock - and minimum frame rate -- (X+hmarg.)*(Y+vmarg.)*vfmin <= pixelclock. - In interlace mode this is " * " *vfmin <= pixelclock. - Additional constraints: hfreq. - Frequency range for multisync monitors is given via command line. - For TV and SM124 both frequencies are fixed. - - X % 16 == 0 to fit 8x?? font (except 1 bitplane modes must use X%32==0) - Y % 16 == 0 to fit 8x16 font - Y % 8 == 0 if Y<400 - - Currently interlace and doubleline mode in var are ignored. - On SM124 and TV only the standard resolutions can be used. -*/ - - /* Reject uninitialized mode */ - if (!xres || !yres || !bpp) - return -EINVAL; - - if (mon_type == F_MON_SM && bpp != 1) { - return -EINVAL; - } - else if (bpp <= 1) { - bpp = 1; - par->hw.falcon.f_shift = 0x400; - par->hw.falcon.st_shift = 0x200; - } - else if (bpp <= 2) { - bpp = 2; - par->hw.falcon.f_shift = 0x000; - par->hw.falcon.st_shift = 0x100; - } - else if (bpp <= 4) { - bpp = 4; - par->hw.falcon.f_shift = 0x000; - par->hw.falcon.st_shift = 0x000; - } - else if (bpp <= 8) { - bpp = 8; - par->hw.falcon.f_shift = 0x010; - } - else if (bpp <= 16) { - bpp = 16; /* packed pixel mode */ - par->hw.falcon.f_shift = 0x100; /* hicolor, no overlay */ - } - else - return -EINVAL; - par->hw.falcon.bpp = bpp; - - if (mon_type == F_MON_SM || DontCalcRes) { - /* Skip all calculations. VGA/TV/SC1224 only supported. */ - struct fb_var_screeninfo *myvar = &atafb_predefined[0]; - - if (bpp > myvar->bits_per_pixel || - var->xres > myvar->xres || - var->yres > myvar->yres) - return -EINVAL; - fbhw->get_par(par); /* Current par will be new par */ - goto set_screen_base; /* Don't forget this */ - } - - /* Only some fixed resolutions < 640x400 */ - if (xres <= 320) - xres = 320; - else if (xres <= 640 && bpp != 16) - xres = 640; - if (yres <= 200) - yres = 200; - else if (yres <= 240) - yres = 240; - else if (yres <= 400) - yres = 400; - - /* 2 planes must use STE compatibility mode */ - par->hw.falcon.ste_mode = bpp==2; - par->hw.falcon.mono = bpp==1; - - /* Total and visible scanline length must be a multiple of one longword, - * this and the console fontwidth yields the alignment for xres and - * xres_virtual. - * TODO: this way "odd" fontheights are not supported - * - * Special case in STE mode: blank and graphic positions don't align, - * avoid trash at right margin - */ - if (par->hw.falcon.ste_mode) - xres = (xres + 63) & ~63; - else if (bpp == 1) - xres = (xres + 31) & ~31; - else - xres = (xres + 15) & ~15; - if (yres >= 400) - yres = (yres + 15) & ~15; - else - yres = (yres + 7) & ~7; - - if (xres_virtual < xres) - xres_virtual = xres; - else if (bpp == 1) - xres_virtual = (xres_virtual + 31) & ~31; - else - xres_virtual = (xres_virtual + 15) & ~15; - - if (yres_virtual <= 0) - yres_virtual = 0; - else if (yres_virtual < yres) - yres_virtual = yres; - - /* backward bug-compatibility */ - if (var->pixclock > 1) - var->pixclock -= 1; - - par->hw.falcon.line_width = bpp * xres / 16; - par->hw.falcon.line_offset = bpp * (xres_virtual - xres) / 16; - - /* single or double pixel width */ - xstretch = (xres < 640) ? 2 : 1; - -#if 0 /* SM124 supports only 640x400, this is rejected above */ - if (mon_type == F_MON_SM) { - if (xres != 640 && yres != 400) - return -EINVAL; - plen = 1; - pclock = &f32; - /* SM124-mode is special */ - par->hw.falcon.ste_mode = 1; - par->hw.falcon.f_shift = 0x000; - par->hw.falcon.st_shift = 0x200; - left_margin = hsync_len = 128 / plen; - right_margin = 0; - /* TODO set all margins */ - } - else -#endif - if (mon_type == F_MON_SC || mon_type == F_MON_TV) { - plen = 2 * xstretch; - if (var->pixclock > f32.t * plen) - return -EINVAL; - pclock = &f32; - if (yres > 240) - interlace = 1; - if (var->pixclock == 0) { - /* set some minimal margins which center the screen */ - left_margin = 32; - right_margin = 18; - hsync_len = pclock->hsync / plen; - upper_margin = 31; - lower_margin = 14; - vsync_len = interlace ? 3 : 4; - } else { - left_margin = var->left_margin; - right_margin = var->right_margin; - hsync_len = var->hsync_len; - upper_margin = var->upper_margin; - lower_margin = var->lower_margin; - vsync_len = var->vsync_len; - if (var->vmode & FB_VMODE_INTERLACED) { - upper_margin = (upper_margin + 1) / 2; - lower_margin = (lower_margin + 1) / 2; - vsync_len = (vsync_len + 1) / 2; - } else if (var->vmode & FB_VMODE_DOUBLE) { - upper_margin *= 2; - lower_margin *= 2; - vsync_len *= 2; - } - } - } - else - { /* F_MON_VGA */ - if (bpp == 16) - xstretch = 2; /* Double pixel width only for hicolor */ - /* Default values are used for vert./hor. timing if no pixelclock given. */ - if (var->pixclock == 0) { - int linesize; - - /* Choose master pixelclock depending on hor. timing */ - plen = 1 * xstretch; - if ((plen * xres + f25.right+f25.hsync+f25.left) * - fb_info.monspecs.hfmin < f25.f) - pclock = &f25; - else if ((plen * xres + f32.right+f32.hsync+f32.left) * - fb_info.monspecs.hfmin < f32.f) - pclock = &f32; - else if ((plen * xres + fext.right+fext.hsync+fext.left) * - fb_info.monspecs.hfmin < fext.f - && fext.f) - pclock = &fext; - else - return -EINVAL; - - left_margin = pclock->left / plen; - right_margin = pclock->right / plen; - hsync_len = pclock->hsync / plen; - linesize = left_margin + xres + right_margin + hsync_len; - upper_margin = 31; - lower_margin = 11; - vsync_len = 3; - } - else { - /* Choose largest pixelclock <= wanted clock */ - int i; - unsigned long pcl = ULONG_MAX; - pclock = 0; - for (i=1; i <= 4; i *= 2) { - if (f25.t*i >= var->pixclock && f25.t*i < pcl) { - pcl = f25.t * i; - pclock = &f25; - } - if (f32.t*i >= var->pixclock && f32.t*i < pcl) { - pcl = f32.t * i; - pclock = &f32; - } - if (fext.t && fext.t*i >= var->pixclock && fext.t*i < pcl) { - pcl = fext.t * i; - pclock = &fext; - } - } - if (!pclock) - return -EINVAL; - plen = pcl / pclock->t; - - left_margin = var->left_margin; - right_margin = var->right_margin; - hsync_len = var->hsync_len; - upper_margin = var->upper_margin; - lower_margin = var->lower_margin; - vsync_len = var->vsync_len; - /* Internal unit is [single lines per (half-)frame] */ - if (var->vmode & FB_VMODE_INTERLACED) { - /* # lines in half frame */ - /* External unit is [lines per full frame] */ - upper_margin = (upper_margin + 1) / 2; - lower_margin = (lower_margin + 1) / 2; - vsync_len = (vsync_len + 1) / 2; - } - else if (var->vmode & FB_VMODE_DOUBLE) { - /* External unit is [double lines per frame] */ - upper_margin *= 2; - lower_margin *= 2; - vsync_len *= 2; - } - } - if (pclock == &fext) - longoffset = 1; /* VIDEL doesn't synchronize on short offset */ - } - /* Is video bus bandwidth (32MB/s) too low for this resolution? */ - /* this is definitely wrong if bus clock != 32MHz */ - if (pclock->f / plen / 8 * bpp > 32000000L) - return -EINVAL; - - if (vsync_len < 1) - vsync_len = 1; - - /* include sync lengths in right/lower margin for all calculations */ - right_margin += hsync_len; - lower_margin += vsync_len; - - /* ! In all calculations of margins we use # of lines in half frame - * (which is a full frame in non-interlace mode), so we can switch - * between interlace and non-interlace without messing around - * with these. - */ - again: - /* Set base_offset 128 and video bus width */ - par->hw.falcon.vid_control = mon_type | f030_bus_width; - if (!longoffset) - par->hw.falcon.vid_control |= VCO_SHORTOFFS; /* base_offset 64 */ - if (var->sync & FB_SYNC_HOR_HIGH_ACT) - par->hw.falcon.vid_control |= VCO_HSYPOS; - if (var->sync & FB_SYNC_VERT_HIGH_ACT) - par->hw.falcon.vid_control |= VCO_VSYPOS; - /* Pixelclock */ - par->hw.falcon.vid_control |= pclock->control_mask; - /* External or internal clock */ - par->hw.falcon.sync = pclock->sync_mask | 0x2; - /* Pixellength and prescale */ - par->hw.falcon.vid_mode = (2/plen) << 2; - if (doubleline) - par->hw.falcon.vid_mode |= VMO_DOUBLE; - if (interlace) - par->hw.falcon.vid_mode |= VMO_INTER; - - /********************* - Horizontal timing: unit = [master clock cycles] - unit of hxx-registers: [master clock cycles * prescale] - Hxx-registers are 9 bit wide - - 1 line = ((hht + 2) * 2 * prescale) clock cycles - - graphic output = hdb & 0x200 ? - ((hht+2)*2 - hdb + hde) * prescale - hdboff + hdeoff: - ( hht + 2 - hdb + hde) * prescale - hdboff + hdeoff - (this must be a multiple of plen*128/bpp, on VGA pixels - to the right may be cut off with a bigger right margin) - - start of graphics relative to start of 1st halfline = hdb & 0x200 ? - (hdb - hht - 2) * prescale + hdboff : - hdb * prescale + hdboff - - end of graphics relative to start of 1st halfline = - (hde + hht + 2) * prescale + hdeoff - *********************/ - /* Calculate VIDEL registers */ - { - int hdb_off, hde_off, base_off; - int gstart, gend1, gend2, align; - - prescale = hxx_prescale(&par->hw.falcon); - base_off = par->hw.falcon.vid_control & VCO_SHORTOFFS ? 64 : 128; - - /* Offsets depend on video mode */ - /* Offsets are in clock cycles, divide by prescale to - * calculate hd[be]-registers - */ - if (par->hw.falcon.f_shift & 0x100) { - align = 1; - hde_off = 0; - hdb_off = (base_off + 16 * plen) + prescale; - } - else { - align = 128 / bpp; - hde_off = ((128 / bpp + 2) * plen); - if (par->hw.falcon.ste_mode) - hdb_off = (64 + base_off + (128 / bpp + 2) * plen) + prescale; - else - hdb_off = (base_off + (128 / bpp + 18) * plen) + prescale; - } - - gstart = (prescale/2 + plen * left_margin) / prescale; - /* gend1 is for hde (gend-gstart multiple of align), shifter's xres */ - gend1 = gstart + ((xres + align-1) / align)*align * plen / prescale; - /* gend2 is for hbb, visible xres (rest to gend1 is cut off by hblank) */ - gend2 = gstart + xres * plen / prescale; - par->HHT = plen * (left_margin + xres + right_margin) / - (2 * prescale) - 2; -/* par->HHT = (gend2 + plen * right_margin / prescale) / 2 - 2;*/ - - par->HDB = gstart - hdb_off/prescale; - par->HBE = gstart; - if (par->HDB < 0) par->HDB += par->HHT + 2 + 0x200; - par->HDE = gend1 - par->HHT - 2 - hde_off/prescale; - par->HBB = gend2 - par->HHT - 2; -#if 0 - /* One more Videl constraint: data fetch of two lines must not overlap */ - if ((par->HDB & 0x200) && (par->HDB & ~0x200) - par->HDE <= 5) { - /* if this happens increase margins, decrease hfreq. */ - } -#endif - if (hde_off % prescale) - par->HBB++; /* compensate for non matching hde and hbb */ - par->HSS = par->HHT + 2 - plen * hsync_len / prescale; - if (par->HSS < par->HBB) - par->HSS = par->HBB; - } - - /* check hor. frequency */ - hfreq = pclock->f / ((par->HHT+2)*prescale*2); - if (hfreq > fb_info.monspecs.hfmax && mon_type!=F_MON_VGA) { - /* ++guenther: ^^^^^^^^^^^^^^^^^^^ can't remember why I did this */ - /* Too high -> enlarge margin */ - left_margin += 1; - right_margin += 1; - goto again; - } - if (hfreq > fb_info.monspecs.hfmax || hfreq < fb_info.monspecs.hfmin) - return -EINVAL; - - /* Vxx-registers */ - /* All Vxx must be odd in non-interlace, since frame starts in the middle - * of the first displayed line! - * One frame consists of VFT+1 half lines. VFT+1 must be even in - * non-interlace, odd in interlace mode for synchronisation. - * Vxx-registers are 11 bit wide - */ - par->VBE = (upper_margin * 2 + 1); /* must begin on odd halfline */ - par->VDB = par->VBE; - par->VDE = yres; - if (!interlace) par->VDE <<= 1; - if (doubleline) par->VDE <<= 1; /* VDE now half lines per (half-)frame */ - par->VDE += par->VDB; - par->VBB = par->VDE; - par->VFT = par->VBB + (lower_margin * 2 - 1) - 1; - par->VSS = par->VFT+1 - (vsync_len * 2 - 1); - /* vbb,vss,vft must be even in interlace mode */ - if (interlace) { - par->VBB++; - par->VSS++; - par->VFT++; - } - - /* V-frequency check, hope I didn't create any loop here. */ - /* Interlace and doubleline are mutually exclusive. */ - vfreq = (hfreq * 2) / (par->VFT + 1); - if (vfreq > fb_info.monspecs.vfmax && !doubleline && !interlace) { - /* Too high -> try again with doubleline */ - doubleline = 1; - goto again; - } - else if (vfreq < fb_info.monspecs.vfmin && !interlace && !doubleline) { - /* Too low -> try again with interlace */ - interlace = 1; - goto again; - } - else if (vfreq < fb_info.monspecs.vfmin && doubleline) { - /* Doubleline too low -> clear doubleline and enlarge margins */ - int lines; - doubleline = 0; - for (lines=0; - (hfreq*2)/(par->VFT+1+4*lines-2*yres)>fb_info.monspecs.vfmax; - lines++) - ; - upper_margin += lines; - lower_margin += lines; - goto again; - } - else if (vfreq > fb_info.monspecs.vfmax && doubleline) { - /* Doubleline too high -> enlarge margins */ - int lines; - for (lines=0; - (hfreq*2)/(par->VFT+1+4*lines)>fb_info.monspecs.vfmax; - lines+=2) - ; - upper_margin += lines; - lower_margin += lines; - goto again; - } - else if (vfreq > fb_info.monspecs.vfmax && interlace) { - /* Interlace, too high -> enlarge margins */ - int lines; - for (lines=0; - (hfreq*2)/(par->VFT+1+4*lines)>fb_info.monspecs.vfmax; - lines++) - ; - upper_margin += lines; - lower_margin += lines; - goto again; - } - else if (vfreq < fb_info.monspecs.vfmin || - vfreq > fb_info.monspecs.vfmax) - return -EINVAL; - - set_screen_base: - linelen = xres_virtual * bpp / 8; - if (yres_virtual * linelen > screen_len && screen_len) - return -EINVAL; - if (yres * linelen > screen_len && screen_len) - return -EINVAL; - if (var->yoffset + yres > yres_virtual && yres_virtual) - return -EINVAL; - par->yres_virtual = yres_virtual; - par->screen_base = screen_base + var->yoffset * linelen; - par->hw.falcon.xoffset = 0; - - return 0; -} - -static int falcon_encode_var( struct fb_var_screeninfo *var, - struct atafb_par *par ) -{ -/* !!! only for VGA !!! */ - int linelen; - int prescale, plen; - int hdb_off, hde_off, base_off; - struct falcon_hw *hw = &par->hw.falcon; - - memset(var, 0, sizeof(struct fb_var_screeninfo)); - /* possible frequencies: 25.175 or 32MHz */ - var->pixclock = hw->sync & 0x1 ? fext.t : - hw->vid_control & VCO_CLOCK25 ? f25.t : f32.t; - - var->height=-1; - var->width=-1; - - var->sync=0; - if (hw->vid_control & VCO_HSYPOS) - var->sync |= FB_SYNC_HOR_HIGH_ACT; - if (hw->vid_control & VCO_VSYPOS) - var->sync |= FB_SYNC_VERT_HIGH_ACT; - - var->vmode = FB_VMODE_NONINTERLACED; - if (hw->vid_mode & VMO_INTER) - var->vmode |= FB_VMODE_INTERLACED; - if (hw->vid_mode & VMO_DOUBLE) - var->vmode |= FB_VMODE_DOUBLE; - - /* visible y resolution: - * Graphics display starts at line VDB and ends at line - * VDE. If interlace mode off unit of VC-registers is - * half lines, else lines. - */ - var->yres = hw->vde - hw->vdb; - if (!(var->vmode & FB_VMODE_INTERLACED)) - var->yres >>= 1; - if (var->vmode & FB_VMODE_DOUBLE) - var->yres >>= 1; - - /* to get bpp, we must examine f_shift and st_shift. - * f_shift is valid if any of bits no. 10, 8 or 4 - * is set. Priority in f_shift is: 10 ">" 8 ">" 4, i.e. - * if bit 10 set then bit 8 and bit 4 don't care... - * If all these bits are 0 get display depth from st_shift - * (as for ST and STE) - */ - if (hw->f_shift & 0x400) /* 2 colors */ - var->bits_per_pixel = 1; - else if (hw->f_shift & 0x100) /* hicolor */ - var->bits_per_pixel = 16; - else if (hw->f_shift & 0x010) /* 8 bitplanes */ - var->bits_per_pixel = 8; - else if (hw->st_shift == 0) - var->bits_per_pixel = 4; - else if (hw->st_shift == 0x100) - var->bits_per_pixel = 2; - else /* if (hw->st_shift == 0x200) */ - var->bits_per_pixel = 1; - - var->xres = hw->line_width * 16 / var->bits_per_pixel; - var->xres_virtual = var->xres + hw->line_offset * 16 / var->bits_per_pixel; - if (hw->xoffset) - var->xres_virtual += 16; - - if (var->bits_per_pixel == 16) { - var->red.offset=11; - var->red.length=5; - var->red.msb_right=0; - var->green.offset=5; - var->green.length=6; - var->green.msb_right=0; - var->blue.offset=0; - var->blue.length=5; - var->blue.msb_right=0; - } - else { - var->red.offset=0; - var->red.length = hw->ste_mode ? 4 : 6; - var->red.msb_right=0; - var->grayscale=0; - 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 (screen_len) { - if (par->yres_virtual) - var->yres_virtual = par->yres_virtual; - else - /* 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->xoffset=0; /* TODO change this */ - - /* hdX-offsets */ - prescale = hxx_prescale(hw); - plen = 4 >> (hw->vid_mode >> 2 & 0x3); - base_off = hw->vid_control & VCO_SHORTOFFS ? 64 : 128; - if (hw->f_shift & 0x100) { - hde_off = 0; - hdb_off = (base_off + 16 * plen) + prescale; - } - else { - hde_off = ((128 / var->bits_per_pixel + 2) * plen); - if (hw->ste_mode) - hdb_off = (64 + base_off + (128 / var->bits_per_pixel + 2) * plen) - + prescale; - else - hdb_off = (base_off + (128 / var->bits_per_pixel + 18) * plen) - + prescale; - } - - /* Right margin includes hsync */ - var->left_margin = hdb_off + prescale * ((hw->hdb & 0x1ff) - - (hw->hdb & 0x200 ? 2+hw->hht : 0)); - if (hw->ste_mode || mon_type!=F_MON_VGA) - var->right_margin = prescale * (hw->hht + 2 - hw->hde) - hde_off; - else - /* can't use this in ste_mode, because hbb is +1 off */ - var->right_margin = prescale * (hw->hht + 2 - hw->hbb); - var->hsync_len = prescale * (hw->hht + 2 - hw->hss); - - /* Lower margin includes vsync */ - var->upper_margin = hw->vdb / 2 ; /* round down to full lines */ - var->lower_margin = (hw->vft+1 - hw->vde + 1) / 2; /* round up */ - var->vsync_len = (hw->vft+1 - hw->vss + 1) / 2; /* round up */ - if (var->vmode & FB_VMODE_INTERLACED) { - var->upper_margin *= 2; - var->lower_margin *= 2; - var->vsync_len *= 2; - } - else if (var->vmode & FB_VMODE_DOUBLE) { - var->upper_margin = (var->upper_margin + 1) / 2; - var->lower_margin = (var->lower_margin + 1) / 2; - var->vsync_len = (var->vsync_len + 1) / 2; - } - - var->pixclock *= plen; - var->left_margin /= plen; - var->right_margin /= plen; - var->hsync_len /= plen; - - var->right_margin -= var->hsync_len; - var->lower_margin -= var->vsync_len; - - if (screen_base) - var->yoffset=(par->screen_base - screen_base)/linelen; - else - var->yoffset=0; - var->nonstd=0; /* what is this for? */ - var->activate=0; - return 0; -} - - -static int f_change_mode = 0; -static struct falcon_hw f_new_mode; -static int f_pan_display = 0; - -static void falcon_get_par( struct atafb_par *par ) -{ - unsigned long addr; - struct falcon_hw *hw = &par->hw.falcon; - - hw->line_width = shifter_f030.scn_width; - hw->line_offset = shifter_f030.off_next; - hw->st_shift = videl.st_shift & 0x300; - hw->f_shift = videl.f_shift; - hw->vid_control = videl.control; - hw->vid_mode = videl.mode; - hw->sync = shifter.syncmode & 0x1; - hw->xoffset = videl.xoffset & 0xf; - hw->hht = videl.hht; - hw->hbb = videl.hbb; - hw->hbe = videl.hbe; - hw->hdb = videl.hdb; - hw->hde = videl.hde; - hw->hss = videl.hss; - hw->vft = videl.vft; - hw->vbb = videl.vbb; - hw->vbe = videl.vbe; - hw->vdb = videl.vdb; - hw->vde = videl.vde; - hw->vss = videl.vss; - - addr = (shifter.bas_hi & 0xff) << 16 | - (shifter.bas_md & 0xff) << 8 | - (shifter.bas_lo & 0xff); - par->screen_base = phys_to_virt(addr); - - /* derived parameters */ - hw->ste_mode = (hw->f_shift & 0x510)==0 && hw->st_shift==0x100; - hw->mono = (hw->f_shift & 0x400) || - ((hw->f_shift & 0x510)==0 && hw->st_shift==0x200); -} - -static void falcon_set_par( struct atafb_par *par ) -{ - f_change_mode = 0; - - /* only set screen_base if really necessary */ - if (current_par.screen_base != par->screen_base) - fbhw->set_screen_base(par->screen_base); - - /* Don't touch any other registers if we keep the default resolution */ - if (DontCalcRes) - return; - - /* Tell vbl-handler to change video mode. - * We change modes only on next VBL, to avoid desynchronisation - * (a shift to the right and wrap around by a random number of pixels - * in all monochrome modes). - * This seems to work on my Falcon. - */ - f_new_mode = par->hw.falcon; - f_change_mode = 1; -} - - -static irqreturn_t falcon_vbl_switcher( int irq, void *dummy, struct pt_regs *fp ) -{ - struct falcon_hw *hw = &f_new_mode; - - if (f_change_mode) { - f_change_mode = 0; - - if (hw->sync & 0x1) { - /* Enable external pixelclock. This code only for ScreenWonder */ - *(volatile unsigned short*)0xffff9202 = 0xffbf; - } - else { - /* Turn off external clocks. Read sets all output bits to 1. */ - *(volatile unsigned short*)0xffff9202; - } - shifter.syncmode = hw->sync; - - videl.hht = hw->hht; - videl.hbb = hw->hbb; - videl.hbe = hw->hbe; - videl.hdb = hw->hdb; - videl.hde = hw->hde; - videl.hss = hw->hss; - videl.vft = hw->vft; - videl.vbb = hw->vbb; - videl.vbe = hw->vbe; - videl.vdb = hw->vdb; - videl.vde = hw->vde; - videl.vss = hw->vss; - - videl.f_shift = 0; /* write enables Falcon palette, 0: 4 planes */ - if (hw->ste_mode) { - videl.st_shift = hw->st_shift; /* write enables STE palette */ - } - else { - /* IMPORTANT: - * set st_shift 0, so we can tell the screen-depth if f_shift==0. - * Writing 0 to f_shift enables 4 plane Falcon mode but - * doesn't set st_shift. st_shift!=0 (!=4planes) is impossible - * with Falcon palette. - */ - videl.st_shift = 0; - /* now back to Falcon palette mode */ - videl.f_shift = hw->f_shift; - } - /* writing to st_shift changed scn_width and vid_mode */ - videl.xoffset = hw->xoffset; - shifter_f030.scn_width = hw->line_width; - shifter_f030.off_next = hw->line_offset; - videl.control = hw->vid_control; - videl.mode = hw->vid_mode; - } - if (f_pan_display) { - f_pan_display = 0; - videl.xoffset = current_par.hw.falcon.xoffset; - shifter_f030.off_next = current_par.hw.falcon.line_offset; - } - return IRQ_HANDLED; -} - - -static int falcon_pan_display( struct fb_var_screeninfo *var, - struct atafb_par *par ) -{ - int xoffset; - int bpp = fb_display[fb_info.currcon].var.bits_per_pixel; - - if (bpp == 1) - var->xoffset = up(var->xoffset, 32); - if (bpp != 16) - par->hw.falcon.xoffset = var->xoffset & 15; - else { - par->hw.falcon.xoffset = 0; - var->xoffset = up(var->xoffset, 2); - } - par->hw.falcon.line_offset = bpp * - (fb_display[fb_info.currcon].var.xres_virtual - fb_display[fb_info.currcon].var.xres) / 16; - if (par->hw.falcon.xoffset) - par->hw.falcon.line_offset -= bpp; - xoffset = var->xoffset - par->hw.falcon.xoffset; - - par->screen_base = screen_base + - (var->yoffset * fb_display[fb_info.currcon].var.xres_virtual + xoffset) * bpp / 8; - if (fbhw->set_screen_base) - fbhw->set_screen_base (par->screen_base); - else - return -EINVAL; /* shouldn't happen */ - f_pan_display = 1; - return 0; -} - - -static int falcon_getcolreg( unsigned regno, unsigned *red, - unsigned *green, unsigned *blue, - unsigned *transp, struct fb_info *info ) -{ unsigned long col; - - if (regno > 255) - return 1; - /* This works in STE-mode (with 4bit/color) since f030_col-registers - * hold up to 6bit/color. - * Even with hicolor r/g/b=5/6/5 bit! - */ - col = f030_col[regno]; - *red = (col >> 16) & 0xff00; - *green = (col >> 8) & 0xff00; - *blue = (col << 8) & 0xff00; - *transp = 0; - return 0; -} - - -static int falcon_setcolreg( unsigned regno, unsigned red, - unsigned green, unsigned blue, - unsigned transp, struct fb_info *info ) -{ - if (regno > 255) - return 1; - f030_col[regno] = (((red & 0xfc00) << 16) | - ((green & 0xfc00) << 8) | - ((blue & 0xfc00) >> 8)); - if (regno < 16) { - shifter_tt.color_reg[regno] = - (((red & 0xe000) >> 13) | ((red & 0x1000) >> 12) << 8) | - (((green & 0xe000) >> 13) | ((green & 0x1000) >> 12) << 4) | - ((blue & 0xe000) >> 13) | ((blue & 0x1000) >> 12); -#ifdef FBCON_HAS_CFB16 - fbcon_cfb16_cmap[regno] = ((red & 0xf800) | - ((green & 0xfc00) >> 5) | - ((blue & 0xf800) >> 11)); -#endif - } - return 0; -} - - -static int falcon_blank( int blank_mode ) -{ -/* ++guenther: we can switch off graphics by changing VDB and VDE, - * so VIDEL doesn't hog the bus while saving. - * (this may affect usleep()). - */ - int vdb, vss, hbe, hss; - - if (mon_type == F_MON_SM) /* this doesn't work on SM124 */ - return 1; - - vdb = current_par.VDB; - vss = current_par.VSS; - hbe = current_par.HBE; - hss = current_par.HSS; - - if (blank_mode >= 1) { - /* disable graphics output (this speeds up the CPU) ... */ - vdb = current_par.VFT + 1; - /* ... and blank all lines */ - hbe = current_par.HHT + 2; - } - /* use VESA suspend modes on VGA monitors */ - if (mon_type == F_MON_VGA) { - if (blank_mode == 2 || blank_mode == 4) - vss = current_par.VFT + 1; - if (blank_mode == 3 || blank_mode == 4) - hss = current_par.HHT + 2; - } - - videl.vdb = vdb; - videl.vss = vss; - videl.hbe = hbe; - videl.hss = hss; - - return 0; -} - - -static int falcon_detect( void ) -{ - struct atafb_par par; - unsigned char fhw; - - /* Determine connected monitor and set monitor parameters */ - fhw = *(unsigned char*)0xffff8006; - mon_type = fhw >> 6 & 0x3; - /* bit 1 of fhw: 1=32 bit ram bus, 0=16 bit */ - f030_bus_width = fhw << 6 & 0x80; - switch (mon_type) { - case F_MON_SM: - fb_info.monspecs.vfmin = 70; - fb_info.monspecs.vfmax = 72; - fb_info.monspecs.hfmin = 35713; - fb_info.monspecs.hfmax = 35715; - break; - case F_MON_SC: - case F_MON_TV: - /* PAL...NTSC */ - fb_info.monspecs.vfmin = 49; /* not 50, since TOS defaults to 49.9x Hz */ - fb_info.monspecs.vfmax = 60; - fb_info.monspecs.hfmin = 15620; - fb_info.monspecs.hfmax = 15755; - break; - } - /* initialize hsync-len */ - f25.hsync = h_syncs[mon_type] / f25.t; - f32.hsync = h_syncs[mon_type] / f32.t; - if (fext.t) - fext.hsync = h_syncs[mon_type] / fext.t; - - falcon_get_par(&par); - falcon_encode_var(&atafb_predefined[0], &par); - - /* Detected mode is always the "autodetect" slot */ - return 1; -} - -#endif /* ATAFB_FALCON */ - -/* ------------------- ST(E) specific functions ---------------------- */ - -#ifdef ATAFB_STE - -static int stste_encode_fix( struct fb_fix_screeninfo *fix, - struct atafb_par *par ) - -{ - int mode; - - 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; - mode = par->hw.st.mode & 3; - if (mode == ST_HIGH) { - fix->type = FB_TYPE_PACKED_PIXELS; - fix->type_aux = 0; - fix->visual = FB_VISUAL_MONO10; - } - if (ATARIHW_PRESENT(EXTD_SHIFTER)) { - fix->xpanstep = 16; - fix->ypanstep = 1; - } else { - fix->xpanstep = 0; - fix->ypanstep = 0; - } - fix->ywrapstep = 0; - fix->line_length = 0; - fix->accel = FB_ACCEL_ATARIBLITT; - return 0; -} - - -static int stste_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 linelen; - int yres_virtual = var->yres_virtual; - - if (mono_moni) { - if (bpp > 1 || xres > sttt_xres || yres > st_yres) - return -EINVAL; - par->hw.st.mode=ST_HIGH; - xres=sttt_xres; - yres=st_yres; - bpp=1; - } else { - if (bpp > 4 || xres > sttt_xres || yres > st_yres) - return -EINVAL; - if (bpp > 2) { - if (xres > sttt_xres/2 || yres > st_yres/2) - return -EINVAL; - par->hw.st.mode=ST_LOW; - xres=sttt_xres/2; - yres=st_yres/2; - bpp=4; - } - else if (bpp > 1) { - if (xres > sttt_xres || yres > st_yres/2) - return -EINVAL; - par->hw.st.mode=ST_MID; - xres=sttt_xres; - yres=st_yres/2; - bpp=2; - } - else - return -EINVAL; - } - if (yres_virtual <= 0) - yres_virtual = 0; - else if (yres_virtual < yres) - yres_virtual = yres; - if (var->sync & FB_SYNC_EXT) - par->hw.st.sync=(par->hw.st.sync & ~1) | 1; - else - par->hw.st.sync=(par->hw.st.sync & ~1); - linelen=xres*bpp/8; - if (yres_virtual * linelen > screen_len && screen_len) - return -EINVAL; - if (yres * linelen > screen_len && screen_len) - return -EINVAL; - if (var->yoffset + yres > yres_virtual && yres_virtual) - return -EINVAL; - par->yres_virtual = yres_virtual; - par->screen_base=screen_base+ var->yoffset*linelen; - return 0; -} - -static int stste_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 = ATARIHW_PRESENT(EXTD_SHIFTER) ? 4 : 3; - var->red.msb_right=0; - var->grayscale=0; - - var->pixclock=31041; - var->left_margin=120; /* these are 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.st.sync & 1)) - var->sync=0; - else - var->sync=FB_SYNC_EXT; - - switch (par->hw.st.mode & 3) { - case ST_LOW: - var->xres=sttt_xres/2; - var->yres=st_yres/2; - var->bits_per_pixel=4; - break; - case ST_MID: - var->xres=sttt_xres; - var->yres=st_yres/2; - var->bits_per_pixel=2; - break; - case ST_HIGH: - var->xres=sttt_xres; - var->yres=st_yres; - 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; - var->xres_virtual=sttt_xres_virtual; - linelen=var->xres_virtual * var->bits_per_pixel / 8; - ovsc_addlen=linelen*(sttt_yres_virtual - st_yres); - - 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 */ - 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->xoffset=0; - if (screen_base) - var->yoffset=(par->screen_base - screen_base)/linelen; - else - var->yoffset=0; - var->nonstd=0; - var->activate=0; - var->vmode=FB_VMODE_NONINTERLACED; - return 0; -} - - -static void stste_get_par( struct atafb_par *par ) -{ - unsigned long addr; - par->hw.st.mode=shifter_tt.st_shiftmode; - par->hw.st.sync=shifter.syncmode; - addr = ((shifter.bas_hi & 0xff) << 16) | - ((shifter.bas_md & 0xff) << 8); - if (ATARIHW_PRESENT(EXTD_SHIFTER)) - addr |= (shifter.bas_lo & 0xff); - par->screen_base = phys_to_virt(addr); -} - -static void stste_set_par( struct atafb_par *par ) -{ - shifter_tt.st_shiftmode=par->hw.st.mode; - shifter.syncmode=par->hw.st.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 stste_getcolreg(unsigned regno, unsigned *red, - unsigned *green, unsigned *blue, - unsigned *transp, struct fb_info *info) -{ - unsigned col, t; - - if (regno > 15) - return 1; - col = shifter_tt.color_reg[regno]; - if (ATARIHW_PRESENT(EXTD_SHIFTER)) { - t = ((col >> 7) & 0xe) | ((col >> 11) & 1); - t |= t << 4; - *red = t | (t << 8); - t = ((col >> 3) & 0xe) | ((col >> 7) & 1); - t |= t << 4; - *green = t | (t << 8); - t = ((col << 1) & 0xe) | ((col >> 3) & 1); - t |= t << 4; - *blue = t | (t << 8); - } - else { - t = (col >> 7) & 0xe; - t |= t << 4; - *red = t | (t << 8); - t = (col >> 3) & 0xe; - t |= t << 4; - *green = t | (t << 8); - t = (col << 1) & 0xe; - t |= t << 4; - *blue = t | (t << 8); - } - *transp = 0; - return 0; -} - - -static int stste_setcolreg(unsigned regno, unsigned red, - unsigned green, unsigned blue, - unsigned transp, struct fb_info *info) -{ - if (regno > 15) - return 1; - red >>= 12; - blue >>= 12; - green >>= 12; - if (ATARIHW_PRESENT(EXTD_SHIFTER)) - shifter_tt.color_reg[regno] = - (((red & 0xe) >> 1) | ((red & 1) << 3) << 8) | - (((green & 0xe) >> 1) | ((green & 1) << 3) << 4) | - ((blue & 0xe) >> 1) | ((blue & 1) << 3); - else - shifter_tt.color_reg[regno] = - ((red & 0xe) << 7) | - ((green & 0xe) << 3) | - ((blue & 0xe) >> 1); - return 0; -} - - -static int stste_detect( void ) - -{ struct atafb_par par; - - /* Determine the connected monitor: The DMA sound must be - * disabled before reading the MFP GPIP, because the Sound - * Done Signal and the Monochrome Detect are XORed together! - */ - if (ATARIHW_PRESENT(PCM_8BIT)) { - tt_dmasnd.ctrl = DMASND_CTRL_OFF; - udelay(20); /* wait a while for things to settle down */ - } - mono_moni = (mfp.par_dt_reg & 0x80) == 0; - - stste_get_par(&par); - stste_encode_var(&atafb_predefined[0], &par); - - if (!ATARIHW_PRESENT(EXTD_SHIFTER)) - use_hwscroll = 0; - return 1; -} - -static void stste_set_screen_base(void *s_base) -{ - unsigned long addr; - addr= virt_to_phys(s_base); - /* Setup Screen Memory */ - shifter.bas_hi=(unsigned char) ((addr & 0xff0000) >> 16); - shifter.bas_md=(unsigned char) ((addr & 0x00ff00) >> 8); - if (ATARIHW_PRESENT(EXTD_SHIFTER)) - shifter.bas_lo=(unsigned char) (addr & 0x0000ff); -} - -#endif /* ATAFB_STE */ - -/* Switching the screen size should be done during vsync, otherwise - * the margins may get messed up. This is a well known problem of - * the ST's video system. - * - * Unfortunately there is hardly any way to find the vsync, as the - * vertical blank interrupt is no longer in time on machines with - * overscan type modifications. - * - * We can, however, use Timer B to safely detect the black shoulder, - * but then we've got to guess an appropriate delay to find the vsync. - * This might not work on every machine. - * - * martin_rogge @ ki.maus.de, 8th Aug 1995 - */ - -#define LINE_DELAY (mono_moni ? 30 : 70) -#define SYNC_DELAY (mono_moni ? 1500 : 2000) - -/* SWITCH_ACIA may be used for Falcon (ScreenBlaster III internal!) */ -static void st_ovsc_switch(void) -{ - unsigned long flags; - register unsigned char old, new; - - if (!(atari_switches & ATARI_SWITCH_OVSC_MASK)) - return; - local_irq_save(flags); - - mfp.tim_ct_b = 0x10; - mfp.active_edge |= 8; - mfp.tim_ct_b = 0; - mfp.tim_dt_b = 0xf0; - mfp.tim_ct_b = 8; - while (mfp.tim_dt_b > 1) /* TOS does it this way, don't ask why */ - ; - new = mfp.tim_dt_b; - do { - udelay(LINE_DELAY); - old = new; - new = mfp.tim_dt_b; - } while (old != new); - mfp.tim_ct_b = 0x10; - udelay(SYNC_DELAY); - - if (atari_switches & ATARI_SWITCH_OVSC_IKBD) - acia.key_ctrl = ACIA_DIV64 | ACIA_D8N1S | ACIA_RHTID | ACIA_RIE; - if (atari_switches & ATARI_SWITCH_OVSC_MIDI) - acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | ACIA_RHTID; - if (atari_switches & (ATARI_SWITCH_OVSC_SND6|ATARI_SWITCH_OVSC_SND7)) { - sound_ym.rd_data_reg_sel = 14; - sound_ym.wd_data = sound_ym.rd_data_reg_sel | - ((atari_switches&ATARI_SWITCH_OVSC_SND6) ? 0x40:0) | - ((atari_switches&ATARI_SWITCH_OVSC_SND7) ? 0x80:0); - } - local_irq_restore(flags); -} - -/* ------------------- External Video ---------------------- */ - -#ifdef ATAFB_EXT - -static int ext_encode_fix( struct fb_fix_screeninfo *fix, - struct atafb_par *par ) - -{ - strcpy(fix->id,"Unknown Extern"); - fix->smem_start = (unsigned long)external_addr; - fix->smem_len = PAGE_ALIGN(external_len); - if (external_depth == 1) { - fix->type = FB_TYPE_PACKED_PIXELS; - /* The letters 'n' and 'i' in the "atavideo=external:" stand - * for "normal" and "inverted", rsp., in the monochrome case */ - fix->visual = - (external_pmode == FB_TYPE_INTERLEAVED_PLANES || - external_pmode == FB_TYPE_PACKED_PIXELS) ? - FB_VISUAL_MONO10 : - FB_VISUAL_MONO01; - } - else { - /* Use STATIC if we don't know how to access color registers */ - int visual = external_vgaiobase ? - FB_VISUAL_PSEUDOCOLOR : - FB_VISUAL_STATIC_PSEUDOCOLOR; - switch (external_pmode) { - case -1: /* truecolor */ - fix->type=FB_TYPE_PACKED_PIXELS; - fix->visual=FB_VISUAL_TRUECOLOR; - break; - case FB_TYPE_PACKED_PIXELS: - fix->type=FB_TYPE_PACKED_PIXELS; - fix->visual=visual; - break; - case FB_TYPE_PLANES: - fix->type=FB_TYPE_PLANES; - fix->visual=visual; - break; - case FB_TYPE_INTERLEAVED_PLANES: - fix->type=FB_TYPE_INTERLEAVED_PLANES; - fix->type_aux=2; - fix->visual=visual; - break; - } - } - fix->xpanstep = 0; - fix->ypanstep = 0; - fix->ywrapstep = 0; - fix->line_length = 0; - return 0; -} - - -static int ext_decode_var( struct fb_var_screeninfo *var, - struct atafb_par *par ) -{ - struct fb_var_screeninfo *myvar = &atafb_predefined[0]; - - if (var->bits_per_pixel > myvar->bits_per_pixel || - var->xres > myvar->xres || - var->xres_virtual > myvar->xres_virtual || - var->yres > myvar->yres || - var->xoffset > 0 || - var->yoffset > 0) - return -EINVAL; - return 0; -} - - -static int ext_encode_var( struct fb_var_screeninfo *var, - struct atafb_par *par ) -{ - memset(var, 0, sizeof(struct fb_var_screeninfo)); - var->red.offset=0; - var->red.length=(external_pmode == -1) ? external_depth/3 : - (external_vgaiobase ? external_bitspercol : 0); - var->red.msb_right=0; - var->grayscale=0; - - var->pixclock=31041; - var->left_margin=120; /* these are surely 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->sync=0; - - var->xres = external_xres; - var->yres = external_yres; - var->xres_virtual = external_xres_virtual; - var->bits_per_pixel = external_depth; - - var->blue=var->green=var->red; - var->transp.offset=0; - var->transp.length=0; - var->transp.msb_right=0; - var->yres_virtual=var->yres; - var->xoffset=0; - var->yoffset=0; - var->nonstd=0; - var->activate=0; - var->vmode=FB_VMODE_NONINTERLACED; - return 0; -} - - -static void ext_get_par( struct atafb_par *par ) -{ - par->screen_base = external_addr; -} - -static void ext_set_par( struct atafb_par *par ) -{ -} - -#define OUTB(port,val) \ - *((unsigned volatile char *) ((port)+external_vgaiobase))=(val) -#define INB(port) \ - (*((unsigned volatile char *) ((port)+external_vgaiobase))) -#define DACDelay \ - do { \ - unsigned char tmp=INB(0x3da); \ - tmp=INB(0x3da); \ - } while (0) - -static int ext_getcolreg( unsigned regno, unsigned *red, - unsigned *green, unsigned *blue, - unsigned *transp, struct fb_info *info ) -{ - if (! external_vgaiobase) - return 1; - - *red = ext_color[regno].red; - *green = ext_color[regno].green; - *blue = ext_color[regno].blue; - *transp=0; - return 0; -} - -static int ext_setcolreg( unsigned regno, unsigned red, - unsigned green, unsigned blue, - unsigned transp, struct fb_info *info ) - -{ unsigned char colmask = (1 << external_bitspercol) - 1; - - if (! external_vgaiobase) - return 1; - - ext_color[regno].red = red; - ext_color[regno].green = green; - ext_color[regno].blue = blue; - - switch (external_card_type) { - case IS_VGA: - OUTB(0x3c8, regno); - DACDelay; - OUTB(0x3c9, red & colmask); - DACDelay; - OUTB(0x3c9, green & colmask); - DACDelay; - OUTB(0x3c9, blue & colmask); - DACDelay; - return 0; - - case IS_MV300: - OUTB((MV300_reg[regno] << 2)+1, red); - OUTB((MV300_reg[regno] << 2)+1, green); - OUTB((MV300_reg[regno] << 2)+1, blue); - return 0; - - default: - return 1; - } -} - - -static int ext_detect( void ) - -{ - struct fb_var_screeninfo *myvar = &atafb_predefined[0]; - struct atafb_par dummy_par; - - myvar->xres = external_xres; - myvar->xres_virtual = external_xres_virtual; - myvar->yres = external_yres; - myvar->bits_per_pixel = external_depth; - ext_encode_var(myvar, &dummy_par); - return 1; -} - -#endif /* ATAFB_EXT */ - -/* ------ This is the same for most hardware types -------- */ - -static void set_screen_base(void *s_base) -{ - unsigned long addr; - addr= virt_to_phys(s_base); - /* Setup Screen Memory */ - shifter.bas_hi=(unsigned char) ((addr & 0xff0000) >> 16); - shifter.bas_md=(unsigned char) ((addr & 0x00ff00) >> 8); - shifter.bas_lo=(unsigned char) (addr & 0x0000ff); -} - - -static int pan_display( struct fb_var_screeninfo *var, - struct atafb_par *par ) -{ - if (!fbhw->set_screen_base || - (!ATARIHW_PRESENT(EXTD_SHIFTER) && var->xoffset)) - return -EINVAL; - var->xoffset = up(var->xoffset, 16); - par->screen_base = screen_base + - (var->yoffset * fb_display[fb_info.currcon].var.xres_virtual + var->xoffset) - * fb_display[fb_info.currcon].var.bits_per_pixel / 8; - fbhw->set_screen_base (par->screen_base); - return 0; -} - - -/* ------------ Interfaces to hardware functions ------------ */ - - -#ifdef ATAFB_TT -static struct fb_hwswitch tt_switch = { - tt_detect, tt_encode_fix, tt_decode_var, tt_encode_var, - tt_get_par, tt_set_par, tt_getcolreg, - set_screen_base, NULL, pan_display -}; -#endif - -#ifdef ATAFB_FALCON -static struct fb_hwswitch falcon_switch = { - falcon_detect, falcon_encode_fix, falcon_decode_var, falcon_encode_var, - falcon_get_par, falcon_set_par, falcon_getcolreg, - set_screen_base, falcon_blank, falcon_pan_display -}; -#endif - -#ifdef ATAFB_STE -static struct fb_hwswitch st_switch = { - stste_detect, stste_encode_fix, stste_decode_var, stste_encode_var, - stste_get_par, stste_set_par, stste_getcolreg, - stste_set_screen_base, NULL, pan_display -}; -#endif - -#ifdef ATAFB_EXT -static struct fb_hwswitch ext_switch = { - ext_detect, ext_encode_fix, ext_decode_var, ext_encode_var, - ext_get_par, ext_set_par, ext_getcolreg, NULL, NULL, NULL -}; -#endif - - - -static void atafb_get_par( struct atafb_par *par ) -{ - if (current_par_valid) { - *par=current_par; - } - else - fbhw->get_par(par); -} - - -static void atafb_set_par( struct atafb_par *par ) -{ - fbhw->set_par(par); - current_par=*par; - current_par_valid=1; -} - - - -/* =========================================================== */ -/* ============== Hardware Independent Functions ============= */ -/* =========================================================== */ - - -/* used for hardware scrolling */ - -static int -fb_update_var(int con, struct fb_info *info) -{ - int off=fb_display[con].var.yoffset*fb_display[con].var.xres_virtual* - fb_display[con].var.bits_per_pixel>>3; - - current_par.screen_base=screen_base + off; - - if (fbhw->set_screen_base) - fbhw->set_screen_base(current_par.screen_base); - return 0; -} - -static int -do_fb_set_var(struct fb_var_screeninfo *var, int isactive) -{ - int err,activate; - struct atafb_par par; - if ((err=fbhw->decode_var(var, &par))) - return err; - activate=var->activate; - if (((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) && isactive) - atafb_set_par(&par); - fbhw->encode_var(var, &par); - var->activate=activate; - return 0; -} - -static int -atafb_get_fix(struct fb_fix_screeninfo *fix, int con, struct fb_info *info) -{ - struct atafb_par par; - if (con == -1) - atafb_get_par(&par); - else { - int err; - if ((err=fbhw->decode_var(&fb_display[con].var,&par))) - return err; - } - memset(fix, 0, sizeof(struct fb_fix_screeninfo)); - return fbhw->encode_fix(fix, &par); -} - -static int -atafb_get_var(struct fb_var_screeninfo *var, int con, struct fb_info *info) -{ - struct atafb_par par; - if (con == -1) { - atafb_get_par(&par); - fbhw->encode_var(var, &par); - } - else - *var=fb_display[con].var; - return 0; -} - -static void -atafb_set_disp(int con, struct fb_info *info) -{ - struct fb_fix_screeninfo fix; - struct fb_var_screeninfo var; - struct display *display; - - if (con >= 0) - display = &fb_display[con]; - else - display = &disp; /* used during initialization */ - - atafb_get_fix(&fix, con, info); - atafb_get_var(&var, con, info); - if (con == -1) - con=0; - info->screen_base = (void *)fix.smem_start; - display->visual = fix.visual; - display->type = fix.type; - display->type_aux = fix.type_aux; - display->ypanstep = fix.ypanstep; - display->ywrapstep = fix.ywrapstep; - display->line_length = fix.line_length; - if (fix.visual != FB_VISUAL_PSEUDOCOLOR && - fix.visual != FB_VISUAL_DIRECTCOLOR) - display->can_soft_blank = 0; - else - display->can_soft_blank = 1; - display->inverse = - (fix.visual == FB_VISUAL_MONO01 ? !inverse : inverse); - switch (fix.type) { - case FB_TYPE_INTERLEAVED_PLANES: - switch (var.bits_per_pixel) { -#ifdef FBCON_HAS_IPLAN2P2 - case 2: - display->dispsw = &fbcon_iplan2p2; - break; -#endif -#ifdef FBCON_HAS_IPLAN2P4 - case 4: - display->dispsw = &fbcon_iplan2p4; - break; -#endif -#ifdef FBCON_HAS_IPLAN2P8 - case 8: - display->dispsw = &fbcon_iplan2p8; - break; -#endif - } - break; - case FB_TYPE_PACKED_PIXELS: - switch (var.bits_per_pixel) { -#ifdef FBCON_HAS_MFB - case 1: - display->dispsw = &fbcon_mfb; - break; -#endif -#ifdef FBCON_HAS_CFB8 - case 8: - display->dispsw = &fbcon_cfb8; - break; -#endif -#ifdef FBCON_HAS_CFB16 - case 16: - display->dispsw = &fbcon_cfb16; - display->dispsw_data = fbcon_cfb16_cmap; - break; -#endif - } - break; - } -} - -static int -atafb_set_var(struct fb_var_screeninfo *var, int con, struct fb_info *info) -{ - int err,oldxres,oldyres,oldbpp,oldxres_virtual, - oldyres_virtual,oldyoffset; - if ((err=do_fb_set_var(var, con==info->currcon))) - return err; - if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) { - oldxres=fb_display[con].var.xres; - oldyres=fb_display[con].var.yres; - oldxres_virtual=fb_display[con].var.xres_virtual; - oldyres_virtual=fb_display[con].var.yres_virtual; - oldbpp=fb_display[con].var.bits_per_pixel; - oldyoffset=fb_display[con].var.yoffset; - fb_display[con].var=*var; - if (oldxres != var->xres || oldyres != var->yres - || oldxres_virtual != var->xres_virtual - || oldyres_virtual != var->yres_virtual - || oldbpp != var->bits_per_pixel - || oldyoffset != var->yoffset) { - atafb_set_disp(con, info); - (*fb_info.changevar)(con); - fb_alloc_cmap(&fb_display[con].cmap, 0, 0); - do_install_cmap(con, info); - } - } - var->activate=0; - return 0; -} - - - -static int -atafb_get_cmap(struct fb_cmap *cmap, int kspc, int con, struct fb_info *info) -{ - if (con == info->currcon) /* current console ? */ - return fb_get_cmap(cmap, kspc, fbhw->getcolreg, info); - else - if (fb_display[con].cmap.len) /* non default colormap ? */ - fb_copy_cmap(&fb_display[con].cmap, cmap, kspc ? 0 : 2); - else - fb_copy_cmap(fb_default_cmap(1<<fb_display[con].var.bits_per_pixel), - cmap, kspc ? 0 : 2); - return 0; -} - -static int -atafb_pan_display(struct fb_var_screeninfo *var, int con, struct fb_info *info) -{ - int xoffset = var->xoffset; - int yoffset = var->yoffset; - int err; - - if ( xoffset < 0 || xoffset + fb_display[con].var.xres > fb_display[con].var.xres_virtual - || yoffset < 0 || yoffset + fb_display[con].var.yres > fb_display[con].var.yres_virtual) - return -EINVAL; - - if (con == info->currcon) { - if (fbhw->pan_display) { - if ((err = fbhw->pan_display(var, ¤t_par))) - return err; - } - else - return -EINVAL; - } - fb_display[con].var.xoffset = var->xoffset; - fb_display[con].var.yoffset = var->yoffset; - return 0; -} - -static int -atafb_ioctl(struct inode *inode, struct file *file, unsigned int cmd, - unsigned long arg, int con, struct fb_info *info) -{ - switch (cmd) { -#ifdef FBCMD_GET_CURRENTPAR - case FBCMD_GET_CURRENTPAR: - if (copy_to_user((void *)arg, (void *)¤t_par, - sizeof(struct atafb_par))) - return -EFAULT; - return 0; -#endif -#ifdef FBCMD_SET_CURRENTPAR - case FBCMD_SET_CURRENTPAR: - if (copy_from_user((void *)¤t_par, (void *)arg, - sizeof(struct atafb_par))) - return -EFAULT; - atafb_set_par(¤t_par); - return 0; -#endif - } - return -EINVAL; -} - -/* (un)blank/poweroff - * 0 = unblank - * 1 = blank - * 2 = suspend vsync - * 3 = suspend hsync - * 4 = off - */ -static int -atafb_blank(int blank, struct fb_info *info) -{ - unsigned short black[16]; - struct fb_cmap cmap; - if (fbhw->blank && !fbhw->blank(blank)) - return 1; - if (blank) { - memset(black, 0, 16*sizeof(unsigned short)); - cmap.red=black; - cmap.green=black; - cmap.blue=black; - cmap.transp=NULL; - cmap.start=0; - cmap.len=16; - fb_set_cmap(&cmap, 1, info); - } - else - do_install_cmap(info->currcon, info); - return 0; -} - -static struct fb_ops atafb_ops = { - .owner = THIS_MODULE, - .fb_get_fix = atafb_get_fix, - .fb_get_var = atafb_get_var, - .fb_set_var = atafb_set_var, - .fb_get_cmap = atafb_get_cmap, - .fb_set_cmap = gen_set_cmap, - .fb_pan_display =atafb_pan_display, - .fb_blank = atafb_blank, - .fb_ioctl = atafb_ioctl, -}; - -static void -check_default_par( int detected_mode ) -{ - char default_name[10]; - int i; - struct fb_var_screeninfo var; - unsigned long min_mem; - - /* First try the user supplied mode */ - if (default_par) { - var=atafb_predefined[default_par-1]; - var.activate = FB_ACTIVATE_TEST; - if (do_fb_set_var(&var,1)) - default_par=0; /* failed */ - } - /* Next is the autodetected one */ - if (! default_par) { - var=atafb_predefined[detected_mode-1]; /* autodetect */ - var.activate = FB_ACTIVATE_TEST; - if (!do_fb_set_var(&var,1)) - default_par=detected_mode; - } - /* If that also failed, try some default modes... */ - if (! default_par) { - /* try default1, default2... */ - for (i=1 ; i < 10 ; i++) { - sprintf(default_name,"default%d",i); - default_par=get_video_mode(default_name); - if (! default_par) - panic("can't set default video mode"); - var=atafb_predefined[default_par-1]; - var.activate = FB_ACTIVATE_TEST; - if (! do_fb_set_var(&var,1)) - break; /* ok */ - } - } - min_mem=var.xres_virtual * var.yres_virtual * var.bits_per_pixel/8; - if (default_mem_req < min_mem) - default_mem_req=min_mem; -} - -static int -atafb_switch(int con, struct fb_info *info) -{ - /* Do we have to save the colormap ? */ - if (fb_display[info->currcon].cmap.len) - fb_get_cmap(&fb_display[info->currcon].cmap, 1, fbhw->getcolreg, - info); - do_fb_set_var(&fb_display[con].var,1); - info->currcon=con; - /* Install new colormap */ - do_install_cmap(con, info); - return 0; -} - -int __init atafb_init(void) -{ - int pad; - int detected_mode; - unsigned long mem_req; - - if (!MACH_IS_ATARI) - return -ENXIO; - - do { -#ifdef ATAFB_EXT - if (external_addr) { - fbhw = &ext_switch; - atafb_ops.fb_setcolreg = &ext_setcolreg; - break; - } -#endif -#ifdef ATAFB_TT - if (ATARIHW_PRESENT(TT_SHIFTER)) { - fbhw = &tt_switch; - atafb_ops.fb_setcolreg = &tt_setcolreg; - break; - } -#endif -#ifdef ATAFB_FALCON - if (ATARIHW_PRESENT(VIDEL_SHIFTER)) { - fbhw = &falcon_switch; - atafb_ops.fb_setcolreg = &falcon_setcolreg; - request_irq(IRQ_AUTO_4, falcon_vbl_switcher, IRQ_TYPE_PRIO, - "framebuffer/modeswitch", falcon_vbl_switcher); - break; - } -#endif -#ifdef ATAFB_STE - if (ATARIHW_PRESENT(STND_SHIFTER) || - ATARIHW_PRESENT(EXTD_SHIFTER)) { - fbhw = &st_switch; - atafb_ops.fb_setcolreg = &stste_setcolreg; - break; - } - fbhw = &st_switch; - atafb_ops.fb_setcolreg = &stste_setcolreg; - printk("Cannot determine video hardware; defaulting to ST(e)\n"); -#else /* ATAFB_STE */ - /* no default driver included */ - /* Nobody will ever see this message :-) */ - panic("Cannot initialize video hardware"); -#endif - } while (0); - - /* Multisync monitor capabilities */ - /* Atari-TOS defaults if no boot option present */ - if (fb_info.monspecs.hfmin == 0) { - fb_info.monspecs.hfmin = 31000; - fb_info.monspecs.hfmax = 32000; - fb_info.monspecs.vfmin = 58; - fb_info.monspecs.vfmax = 62; - } - - detected_mode = fbhw->detect(); - check_default_par(detected_mode); -#ifdef ATAFB_EXT - if (!external_addr) { -#endif /* ATAFB_EXT */ - mem_req = default_mem_req + ovsc_offset + ovsc_addlen; - mem_req = PAGE_ALIGN(mem_req) + PAGE_SIZE; - screen_base = atari_stram_alloc(mem_req, "atafb"); - if (!screen_base) - panic("Cannot allocate screen memory"); - memset(screen_base, 0, mem_req); - pad = -(unsigned long)screen_base & (PAGE_SIZE-1); - screen_base+=pad; - real_screen_base=screen_base+ovsc_offset; - screen_len = (mem_req - pad - ovsc_offset) & PAGE_MASK; - st_ovsc_switch(); - if (CPU_IS_040_OR_060) { - /* On a '040+, the cache mode of video RAM must be set to - * write-through also for internal video hardware! */ - cache_push(virt_to_phys(screen_base), screen_len); - kernel_set_cachemode(screen_base, screen_len, - IOMAP_WRITETHROUGH); - } -#ifdef ATAFB_EXT - } - else { - /* Map the video memory (physical address given) to somewhere - * in the kernel address space. - */ - external_addr = - ioremap_writethrough((unsigned long)external_addr, - external_len); - if (external_vgaiobase) - external_vgaiobase = - (unsigned long)ioremap(external_vgaiobase, 0x10000); - screen_base = - real_screen_base = external_addr; - screen_len = external_len & PAGE_MASK; - memset (screen_base, 0, external_len); - } -#endif /* ATAFB_EXT */ - - strcpy(fb_info.modename, "Atari Builtin "); - fb_info.changevar = NULL; - fb_info.fbops = &atafb_ops; - fb_info.disp = &disp; - fb_info.currcon = -1; - fb_info.switch_con = &atafb_switch; - fb_info.updatevar = &fb_update_var; - fb_info.flags = FBINFO_FLAG_DEFAULT; - do_fb_set_var(&atafb_predefined[default_par-1], 1); - strcat(fb_info.modename, fb_var_names[default_par-1][0]); - - atafb_get_var(&disp.var, -1, &fb_info); - atafb_set_disp(-1, &fb_info); - do_install_cmap(0, &fb_info); - - if (register_framebuffer(&fb_info) < 0) - return -EINVAL; - - printk("Determined %dx%d, depth %d\n", - disp.var.xres, disp.var.yres, disp.var.bits_per_pixel); - if ((disp.var.xres != disp.var.xres_virtual) || - (disp.var.yres != disp.var.yres_virtual)) - printk(" virtual %dx%d\n", - disp.var.xres_virtual, disp.var.yres_virtual); - printk("fb%d: %s frame buffer device, using %dK of video memory\n", - fb_info.node, fb_info.modename, screen_len>>10); - - /* TODO: This driver cannot be unloaded yet */ - return 0; -} - - -#ifdef ATAFB_EXT -static void __init atafb_setup_ext(char *spec) -{ - int xres, xres_virtual, yres, depth, planes; - unsigned long addr, len; - char *p; - - /* Format is: <xres>;<yres>;<depth>;<plane organ.>; - * <screen mem addr> - * [;<screen mem length>[;<vgaiobase>[;<bits-per-col>[;<colorreg-type> - * [;<xres-virtual>]]]]] - * - * 09/23/97 Juergen - * <xres_virtual>: hardware's x-resolution (f.e. ProMST) - * - * Even xres_virtual is available, we neither support panning nor hw-scrolling! - */ - if (!(p = strsep(&spec, ";")) || !*p) - return; - xres_virtual = xres = simple_strtoul(p, NULL, 10); - if (xres <= 0) - return; - - if (!(p = strsep(&spec, ";")) || !*p) - return; - yres = simple_strtoul(p, NULL, 10); - if (yres <= 0) - return; - - if (!(p = strsep(&spec, ";")) || !*p) - return; - depth = simple_strtoul(p, NULL, 10); - if (depth != 1 && depth != 2 && depth != 4 && depth != 8 && - depth != 16 && depth != 24) - return; - - if (!(p = strsep(&spec, ";")) || !*p) - return; - if (*p == 'i') - planes = FB_TYPE_INTERLEAVED_PLANES; - else if (*p == 'p') - planes = FB_TYPE_PACKED_PIXELS; - else if (*p == 'n') - planes = FB_TYPE_PLANES; - else if (*p == 't') - planes = -1; /* true color */ - else - return; - - - if (!(p = strsep(&spec, ";")) || !*p) - return; - addr = simple_strtoul(p, NULL, 0); - - if (!(p = strsep(&spec, ";")) || !*p) - len = xres*yres*depth/8; - else - len = simple_strtoul(p, NULL, 0); - - if ((p = strsep(&spec, ";")) && *p) { - external_vgaiobase=simple_strtoul(p, NULL, 0); - } - - if ((p = strsep(&spec, ";")) && *p) { - external_bitspercol = simple_strtoul(p, NULL, 0); - if (external_bitspercol > 8) - external_bitspercol = 8; - else if (external_bitspercol < 1) - external_bitspercol = 1; - } - - if ((p = strsep(&spec, ";")) && *p) { - if (!strcmp(p, "vga")) - external_card_type = IS_VGA; - if (!strcmp(p, "mv300")) - external_card_type = IS_MV300; - } - - if ((p = strsep(&spec, ";")) && *p) { - xres_virtual = simple_strtoul(p, NULL, 10); - if (xres_virtual < xres) - xres_virtual = xres; - if (xres_virtual*yres*depth/8 > len) - len=xres_virtual*yres*depth/8; - } - - external_xres = xres; - external_xres_virtual = xres_virtual; - external_yres = yres; - external_depth = depth; - external_pmode = planes; - external_addr = (void *)addr; - external_len = len; - - if (external_card_type == IS_MV300) - switch (external_depth) { - case 1: - MV300_reg = MV300_reg_1bit; - break; - case 4: - MV300_reg = MV300_reg_4bit; - break; - case 8: - MV300_reg = MV300_reg_8bit; - break; - } -} -#endif /* ATAFB_EXT */ - - -static void __init atafb_setup_int(char *spec) -{ - /* Format to config extended internal video hardware like OverScan: - "internal:<xres>;<yres>;<xres_max>;<yres_max>;<offset>" - Explanation: - <xres>: x-resolution - <yres>: y-resolution - The following are only needed if you have an overscan which - needs a black border: - <xres_max>: max. length of a line in pixels your OverScan hardware would allow - <yres_max>: max. number of lines your OverScan hardware would allow - <offset>: Offset from physical beginning to visible beginning - of screen in bytes - */ - int xres; - char *p; - - if (!(p = strsep(&spec, ";")) || !*p) - return; - xres = simple_strtoul(p, NULL, 10); - if (!(p = strsep(&spec, ";")) || !*p) - return; - sttt_xres=xres; - tt_yres=st_yres=simple_strtoul(p, NULL, 10); - if ((p=strsep(&spec, ";")) && *p) { - sttt_xres_virtual=simple_strtoul(p, NULL, 10); - } - if ((p=strsep(&spec, ";")) && *p) { - sttt_yres_virtual=simple_strtoul(p, NULL, 0); - } - if ((p=strsep(&spec, ";")) && *p) { - ovsc_offset=simple_strtoul(p, NULL, 0); - } - - if (ovsc_offset || (sttt_yres_virtual != st_yres)) - use_hwscroll=0; -} - - -#ifdef ATAFB_FALCON -static void __init atafb_setup_mcap(char *spec) -{ - char *p; - int vmin, vmax, hmin, hmax; - - /* Format for monitor capabilities is: <Vmin>;<Vmax>;<Hmin>;<Hmax> - * <V*> vertical freq. in Hz - * <H*> horizontal freq. in kHz - */ - if (!(p = strsep(&spec, ";")) || !*p) - return; - vmin = simple_strtoul(p, NULL, 10); - if (vmin <= 0) - return; - if (!(p = strsep(&spec, ";")) || !*p) - return; - vmax = simple_strtoul(p, NULL, 10); - if (vmax <= 0 || vmax <= vmin) - return; - if (!(p = strsep(&spec, ";")) || !*p) - return; - hmin = 1000 * simple_strtoul(p, NULL, 10); - if (hmin <= 0) - return; - if (!(p = strsep(&spec, "")) || !*p) - return; - hmax = 1000 * simple_strtoul(p, NULL, 10); - if (hmax <= 0 || hmax <= hmin) - return; - - fb_info.monspecs.vfmin = vmin; - fb_info.monspecs.vfmax = vmax; - fb_info.monspecs.hfmin = hmin; - fb_info.monspecs.hfmax = hmax; -} -#endif /* ATAFB_FALCON */ - - -static void __init atafb_setup_user(char *spec) -{ - /* Format of user defined video mode is: <xres>;<yres>;<depth> - */ - char *p; - int xres, yres, depth, temp; - - if (!(p = strsep(&spec, ";")) || !*p) - return; - xres = simple_strtoul(p, NULL, 10); - if (!(p = strsep(&spec, ";")) || !*p) - return; - yres = simple_strtoul(p, NULL, 10); - if (!(p = strsep(&spec, "")) || !*p) - return; - depth = simple_strtoul(p, NULL, 10); - if ((temp=get_video_mode("user0"))) { - default_par=temp; - atafb_predefined[default_par-1].xres = xres; - atafb_predefined[default_par-1].yres = yres; - atafb_predefined[default_par-1].bits_per_pixel = depth; - } -} - -int __init atafb_setup( char *options ) -{ - char *this_opt; - int temp; - - fb_info.fontname[0] = '\0'; - - if (!options || !*options) - return 0; - - while ((this_opt = strsep(&options, ",")) != NULL) { - if (!*this_opt) continue; - if ((temp=get_video_mode(this_opt))) - default_par=temp; - else if (! strcmp(this_opt, "inverse")) - inverse=1; - else if (!strncmp(this_opt, "font:", 5)) - strcpy(fb_info.fontname, this_opt+5); - else if (! strncmp(this_opt, "hwscroll_",9)) { - hwscroll=simple_strtoul(this_opt+9, NULL, 10); - if (hwscroll < 0) - hwscroll = 0; - if (hwscroll > 200) - hwscroll = 200; - } -#ifdef ATAFB_EXT - else if (!strcmp(this_opt,"mv300")) { - external_bitspercol = 8; - external_card_type = IS_MV300; - } - else if (!strncmp(this_opt,"external:",9)) - atafb_setup_ext(this_opt+9); -#endif - else if (!strncmp(this_opt,"internal:",9)) - atafb_setup_int(this_opt+9); -#ifdef ATAFB_FALCON - else if (!strncmp(this_opt, "eclock:", 7)) { - fext.f = simple_strtoul(this_opt+7, NULL, 10); - /* external pixelclock in kHz --> ps */ - fext.t = 1000000000/fext.f; - fext.f *= 1000; - } - else if (!strncmp(this_opt, "monitorcap:", 11)) - atafb_setup_mcap(this_opt+11); -#endif - else if (!strcmp(this_opt, "keep")) - DontCalcRes = 1; - else if (!strncmp(this_opt, "R", 1)) - atafb_setup_user(this_opt+1); - } - return 0; -} - -#ifdef MODULE -MODULE_LICENSE("GPL"); - -int init_module(void) -{ - return atafb_init(); -} -#endif /* MODULE */ |