| /* |
| * 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 fb_info *info, unsigned int cmd, unsigned long arg) |
| { |
| 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 |
|