| /* |
| * 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/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/string.h> |
| #include <linux/mm.h> |
| #include <linux/delay.h> |
| #include <linux/init.h> |
| #include <linux/interrupt.h> |
| #include <linux/platform_device.h> |
| |
| #include <asm/setup.h> |
| #include <linux/uaccess.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 "c2p.h" |
| #include "atafb.h" |
| |
| #define SWITCH_ACIA 0x01 /* modes for switch on OverScan */ |
| #define SWITCH_SND6 0x40 |
| #define SWITCH_SND7 0x80 |
| #define SWITCH_NONE 0x00 |
| |
| |
| static int default_par; /* default resolution (0=none) */ |
| |
| static unsigned long default_mem_req; |
| |
| 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, ovsc_addlen; |
| |
| /* |
| * Hardware parameters for current mode |
| */ |
| |
| static struct atafb_par { |
| void *screen_base; |
| int yres_virtual; |
| u_long next_line; |
| #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; |
| u32 pseudo_palette[16]; |
| } 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 = { |
| .fix = { |
| .id = "Atari ", |
| .visual = FB_VISUAL_PSEUDOCOLOR, |
| .accel = FB_ACCEL_NONE, |
| } |
| }; |
| |
| static void *screen_base; /* base address of screen */ |
| static unsigned long phys_screen_base; /* (only for Overscan) */ |
| |
| static int screen_len; |
| |
| static int current_par_valid; |
| |
| static int mono_moni; |
| |
| |
| #ifdef ATAFB_EXT |
| |
| /* external video handling */ |
| static unsigned int external_xres; |
| static unsigned int external_xres_virtual; |
| static unsigned int external_yres; |
| |
| /* |
| * not needed - atafb will never support panning/hardwarescroll with external |
| * static unsigned int external_yres_virtual; |
| */ |
| static unsigned int external_depth; |
| static int external_pmode; |
| static void *external_screen_base; |
| static unsigned long external_addr; |
| static unsigned long external_len; |
| static unsigned long external_vgaiobase; |
| static unsigned int external_bitspercol = 6; |
| |
| /* |
| * JOE <joe@amber.dinoco.de>: |
| * added card type for external driver, is only needed for |
| * colormap handling. |
| */ |
| enum cardtype { IS_VGA, IS_MV300 }; |
| static enum cardtype external_card_type = IS_VGA; |
| |
| /* |
| * The MV300 mixes the color registers. So we need an array of munged |
| * indices in order to access the correct reg. |
| */ |
| static int MV300_reg_1bit[2] = { |
| 0, 1 |
| }; |
| static int MV300_reg_4bit[16] = { |
| 0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15 |
| }; |
| static int MV300_reg_8bit[256] = { |
| 0, 128, 64, 192, 32, 160, 96, 224, 16, 144, 80, 208, 48, 176, 112, 240, |
| 8, 136, 72, 200, 40, 168, 104, 232, 24, 152, 88, 216, 56, 184, 120, 248, |
| 4, 132, 68, 196, 36, 164, 100, 228, 20, 148, 84, 212, 52, 180, 116, 244, |
| 12, 140, 76, 204, 44, 172, 108, 236, 28, 156, 92, 220, 60, 188, 124, 252, |
| 2, 130, 66, 194, 34, 162, 98, 226, 18, 146, 82, 210, 50, 178, 114, 242, |
| 10, 138, 74, 202, 42, 170, 106, 234, 26, 154, 90, 218, 58, 186, 122, 250, |
| 6, 134, 70, 198, 38, 166, 102, 230, 22, 150, 86, 214, 54, 182, 118, 246, |
| 14, 142, 78, 206, 46, 174, 110, 238, 30, 158, 94, 222, 62, 190, 126, 254, |
| 1, 129, 65, 193, 33, 161, 97, 225, 17, 145, 81, 209, 49, 177, 113, 241, |
| 9, 137, 73, 201, 41, 169, 105, 233, 25, 153, 89, 217, 57, 185, 121, 249, |
| 5, 133, 69, 197, 37, 165, 101, 229, 21, 149, 85, 213, 53, 181, 117, 245, |
| 13, 141, 77, 205, 45, 173, 109, 237, 29, 157, 93, 221, 61, 189, 125, 253, |
| 3, 131, 67, 195, 35, 163, 99, 227, 19, 147, 83, 211, 51, 179, 115, 243, |
| 11, 139, 75, 203, 43, 171, 107, 235, 27, 155, 91, 219, 59, 187, 123, 251, |
| 7, 135, 71, 199, 39, 167, 103, 231, 23, 151, 87, 215, 55, 183, 119, 247, |
| 15, 143, 79, 207, 47, 175, 111, 239, 31, 159, 95, 223, 63, 191, 127, 255 |
| }; |
| |
| static int *MV300_reg = MV300_reg_8bit; |
| #endif /* ATAFB_EXT */ |
| |
| |
| /* |
| * struct fb_ops { |
| * * open/release and usage marking |
| * struct module *owner; |
| * int (*fb_open)(struct fb_info *info, int user); |
| * int (*fb_release)(struct fb_info *info, int user); |
| * |
| * * For framebuffers with strange non linear layouts or that do not |
| * * work with normal memory mapped access |
| * ssize_t (*fb_read)(struct file *file, char __user *buf, size_t count, loff_t *ppos); |
| * ssize_t (*fb_write)(struct file *file, const char __user *buf, size_t count, loff_t *ppos); |
| * |
| * * checks var and eventually tweaks it to something supported, |
| * * DOES NOT MODIFY PAR * |
| * int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info); |
| * |
| * * set the video mode according to info->var * |
| * int (*fb_set_par)(struct fb_info *info); |
| * |
| * * set color register * |
| * int (*fb_setcolreg)(unsigned int regno, unsigned int red, unsigned int green, |
| * unsigned int blue, unsigned int transp, struct fb_info *info); |
| * |
| * * set color registers in batch * |
| * int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info); |
| * |
| * * blank display * |
| * int (*fb_blank)(int blank, struct fb_info *info); |
| * |
| * * pan display * |
| * int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info); |
| * |
| * *** The meat of the drawing engine *** |
| * * Draws a rectangle * |
| * void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect); |
| * * Copy data from area to another * |
| * void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region); |
| * * Draws a image to the display * |
| * void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image); |
| * |
| * * Draws cursor * |
| * int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor); |
| * |
| * * wait for blit idle, optional * |
| * int (*fb_sync)(struct fb_info *info); |
| * |
| * * perform fb specific ioctl (optional) * |
| * int (*fb_ioctl)(struct fb_info *info, unsigned int cmd, |
| * unsigned long arg); |
| * |
| * * Handle 32bit compat ioctl (optional) * |
| * int (*fb_compat_ioctl)(struct fb_info *info, unsigned int cmd, |
| * unsigned long arg); |
| * |
| * * perform fb specific mmap * |
| * int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma); |
| * } ; |
| */ |
| |
| |
| /* ++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. |
| * !!! Obsolete, perhaps !!! |
| * |
| * int (*decode_var)(struct fb_var_screeninfo *var, |
| * struct atafb_par *par) |
| * Get the video params out of 'var'. If a value doesn't fit, round |
| * it up, if it's too big, return EINVAL. |
| * Round up in the following order: bits_per_pixel, xres, yres, |
| * xres_virtual, yres_virtual, xoffset, yoffset, grayscale, bitfields, |
| * 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. |
| * !!! Used only by detect() !!! |
| * |
| * void (*set_par)(struct atafb_par *par) |
| * Set the hardware according to 'par'. |
| * |
| * 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); |
| void (*set_screen_base)(void *s_base); |
| int (*blank)(int blank_mode); |
| int (*pan_display)(struct fb_var_screeninfo *var, |
| struct fb_info *info); |
| } *fbhw; |
| |
| static char *autodetect_names[] = { "autodetect", NULL }; |
| static char *stlow_names[] = { "stlow", NULL }; |
| static char *stmid_names[] = { "stmid", "default5", NULL }; |
| static char *sthigh_names[] = { "sthigh", "default4", NULL }; |
| static char *ttlow_names[] = { "ttlow", NULL }; |
| static char *ttmid_names[] = { "ttmid", "default1", NULL }; |
| static char *tthigh_names[] = { "tthigh", "default2", NULL }; |
| static char *vga2_names[] = { "vga2", NULL }; |
| static char *vga4_names[] = { "vga4", NULL }; |
| static char *vga16_names[] = { "vga16", "default3", NULL }; |
| static char *vga256_names[] = { "vga256", NULL }; |
| static char *falh2_names[] = { "falh2", NULL }; |
| static char *falh16_names[] = { "falh16", NULL }; |
| |
| static char **fb_var_names[] = { |
| 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 |
| }; |
| |
| 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 struct fb_videomode atafb_modedb[] __initdata = { |
| /* |
| * Atari Video Modes |
| * |
| * If you change these, make sure to update DEFMODE_* as well! |
| */ |
| |
| /* |
| * ST/TT Video Modes |
| */ |
| |
| { |
| /* 320x200, 15 kHz, 60 Hz (ST low) */ |
| "st-low", 60, 320, 200, 32000, 32, 16, 31, 14, 96, 4, |
| 0, FB_VMODE_NONINTERLACED |
| }, { |
| /* 640x200, 15 kHz, 60 Hz (ST medium) */ |
| "st-mid", 60, 640, 200, 32000, 32, 16, 31, 14, 96, 4, |
| 0, FB_VMODE_NONINTERLACED |
| }, { |
| /* 640x400, 30.25 kHz, 63.5 Hz (ST high) */ |
| "st-high", 63, 640, 400, 32000, 128, 0, 40, 14, 128, 4, |
| 0, FB_VMODE_NONINTERLACED |
| }, { |
| /* 320x480, 15 kHz, 60 Hz (TT low) */ |
| "tt-low", 60, 320, 480, 31041, 120, 100, 8, 16, 140, 30, |
| 0, FB_VMODE_NONINTERLACED |
| }, { |
| /* 640x480, 29 kHz, 57 Hz (TT medium) */ |
| "tt-mid", 60, 640, 480, 31041, 120, 100, 8, 16, 140, 30, |
| 0, FB_VMODE_NONINTERLACED |
| }, { |
| /* 1280x960, 72 kHz, 72 Hz (TT high) */ |
| "tt-high", 72, 1280, 960, 7760, 260, 60, 36, 4, 192, 4, |
| 0, FB_VMODE_NONINTERLACED |
| }, |
| |
| /* |
| * VGA Video Modes |
| */ |
| |
| { |
| /* 640x480, 31 kHz, 60 Hz (VGA) */ |
| "vga", 60, 640, 480, 39721, 42, 18, 31, 11, 100, 3, |
| 0, FB_VMODE_NONINTERLACED |
| }, { |
| /* 640x400, 31 kHz, 70 Hz (VGA) */ |
| "vga70", 70, 640, 400, 39721, 42, 18, 31, 11, 100, 3, |
| FB_SYNC_VERT_HIGH_ACT | FB_SYNC_COMP_HIGH_ACT, FB_VMODE_NONINTERLACED |
| }, |
| |
| /* |
| * Falcon HiRes Video Modes |
| */ |
| |
| { |
| /* 896x608, 31 kHz, 60 Hz (Falcon High) */ |
| "falh", 60, 896, 608, 32000, 18, 42, 31, 1, 96,3, |
| 0, FB_VMODE_NONINTERLACED |
| }, |
| }; |
| |
| #define NUM_TOTAL_MODES ARRAY_SIZE(atafb_modedb) |
| |
| static char *mode_option __initdata = NULL; |
| |
| /* default modes */ |
| |
| #define DEFMODE_TT 5 /* "tt-high" for TT */ |
| #define DEFMODE_F30 7 /* "vga70" for Falcon */ |
| #define DEFMODE_STE 2 /* "st-high" for ST/E */ |
| #define DEFMODE_EXT 6 /* "vga" for external */ |
| |
| |
| static int get_video_mode(char *vname) |
| { |
| char ***name_list; |
| char **name; |
| int i; |
| |
| name_list = fb_var_names; |
| for (i = 0; i < num_atafb_predefined; i++) { |
| name = *name_list++; |
| if (!name || !*name) |
| break; |
| while (*name) { |
| if (!strcmp(vname, *name)) |
| return i + 1; |
| name++; |
| } |
| } |
| 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 = phys_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 = par->next_line; |
| 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; |
| par->next_line = 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_st.syncmode; |
| addr = ((shifter_st.bas_hi & 0xff) << 16) | |
| ((shifter_st.bas_md & 0xff) << 8) | |
| ((shifter_st.bas_lo & 0xff)); |
| par->screen_base = atari_stram_to_virt(addr); |
| } |
| |
| static void tt_set_par(struct atafb_par *par) |
| { |
| shifter_tt.tt_shiftmode = par->hw.tt.mode; |
| shifter_st.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_setcolreg(unsigned int regno, unsigned int red, |
| unsigned int green, unsigned int blue, |
| unsigned int transp, struct fb_info *info) |
| { |
| if ((shifter_tt.tt_shiftmode & TT_SHIFTER_MODEMASK) == TT_SHIFTER_STHIGH) |
| regno += 254; |
| 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 = (st_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 }; |
| |
| 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 = phys_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 = par->next_line; |
| 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; |
| int hdb_off, hde_off, base_off; |
| int gstart, gend1, gend2, align; |
| |
| /* |
| 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; |
| |
| 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; |
| |
| 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) { |
| /* 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; |
| 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 */ |
| { |
| 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 + roundup(xres, 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; |
| |
| par->next_line = linelen; |
| |
| 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; |
| if (var->red.length > var->bits_per_pixel) |
| var->red.length = var->bits_per_pixel; |
| 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; |
| static struct falcon_hw f_new_mode; |
| static int f_pan_display; |
| |
| 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_st.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_st.bas_hi & 0xff) << 16 | |
| (shifter_st.bas_md & 0xff) << 8 | |
| (shifter_st.bas_lo & 0xff); |
| par->screen_base = atari_stram_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 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_st.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 fb_info *info) |
| { |
| struct atafb_par *par = info->par; |
| |
| int xoffset; |
| int bpp = info->var.bits_per_pixel; |
| |
| if (bpp == 1) |
| var->xoffset = round_up(var->xoffset, 32); |
| if (bpp != 16) |
| par->hw.falcon.xoffset = var->xoffset & 15; |
| else { |
| par->hw.falcon.xoffset = 0; |
| var->xoffset = round_up(var->xoffset, 2); |
| } |
| par->hw.falcon.line_offset = bpp * |
| (info->var.xres_virtual - info->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 * info->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_setcolreg(unsigned int regno, unsigned int red, |
| unsigned int green, unsigned int blue, |
| unsigned int 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); |
| ((u32 *)info->pseudo_palette)[regno] = ((red & 0xf800) | |
| ((green & 0xfc00) >> 5) | |
| ((blue & 0xf800) >> 11)); |
| } |
| 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 = phys_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 = par->next_line; |
| 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; |
| par->next_line = 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_st.syncmode; |
| addr = ((shifter_st.bas_hi & 0xff) << 16) | |
| ((shifter_st.bas_md & 0xff) << 8); |
| if (ATARIHW_PRESENT(EXTD_SHIFTER)) |
| addr |= (shifter_st.bas_lo & 0xff); |
| par->screen_base = atari_stram_to_virt(addr); |
| } |
| |
| static void stste_set_par(struct atafb_par *par) |
| { |
| shifter_tt.st_shiftmode = par->hw.st.mode; |
| shifter_st.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_setcolreg(unsigned int regno, unsigned int red, |
| unsigned int green, unsigned int blue, |
| unsigned int 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 = (st_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 = atari_stram_to_phys(s_base); |
| /* Setup Screen Memory */ |
| shifter_st.bas_hi = (unsigned char)((addr & 0xff0000) >> 16); |
| shifter_st.bas_md = (unsigned char)((addr & 0x00ff00) >> 8); |
| if (ATARIHW_PRESENT(EXTD_SHIFTER)) |
| shifter_st.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); |
| |
| st_mfp.tim_ct_b = 0x10; |
| st_mfp.active_edge |= 8; |
| st_mfp.tim_ct_b = 0; |
| st_mfp.tim_dt_b = 0xf0; |
| st_mfp.tim_ct_b = 8; |
| while (st_mfp.tim_dt_b > 1) /* TOS does it this way, don't ask why */ |
| ; |
| new = st_mfp.tim_dt_b; |
| do { |
| udelay(LINE_DELAY); |
| old = new; |
| new = st_mfp.tim_dt_b; |
| } while (old != new); |
| st_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 = 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 = par->next_line; |
| 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; |
| |
| par->next_line = external_xres_virtual * external_depth / 8; |
| 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_screen_base; |
| } |
| |
| 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_setcolreg(unsigned int regno, unsigned int red, |
| unsigned int green, unsigned int blue, |
| unsigned int transp, struct fb_info *info) |
| { |
| unsigned char colmask = (1 << external_bitspercol) - 1; |
| |
| if (!external_vgaiobase) |
| return 1; |
| |
| if (regno > 255) |
| return 1; |
| |
| red >>= 8; |
| green >>= 8; |
| blue >>= 8; |
| |
| 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 = atari_stram_to_phys(s_base); |
| /* Setup Screen Memory */ |
| shifter_st.bas_hi = (unsigned char)((addr & 0xff0000) >> 16); |
| shifter_st.bas_md = (unsigned char)((addr & 0x00ff00) >> 8); |
| shifter_st.bas_lo = (unsigned char)(addr & 0x0000ff); |
| } |
| |
| static int pan_display(struct fb_var_screeninfo *var, struct fb_info *info) |
| { |
| struct atafb_par *par = info->par; |
| |
| if (!fbhw->set_screen_base || |
| (!ATARIHW_PRESENT(EXTD_SHIFTER) && var->xoffset)) |
| return -EINVAL; |
| var->xoffset = round_up(var->xoffset, 16); |
| par->screen_base = screen_base + |
| (var->yoffset * info->var.xres_virtual + var->xoffset) |
| * info->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 = { |
| .detect = tt_detect, |
| .encode_fix = tt_encode_fix, |
| .decode_var = tt_decode_var, |
| .encode_var = tt_encode_var, |
| .get_par = tt_get_par, |
| .set_par = tt_set_par, |
| .set_screen_base = set_screen_base, |
| .pan_display = pan_display, |
| }; |
| #endif |
| |
| #ifdef ATAFB_FALCON |
| static struct fb_hwswitch falcon_switch = { |
| .detect = falcon_detect, |
| .encode_fix = falcon_encode_fix, |
| .decode_var = falcon_decode_var, |
| .encode_var = falcon_encode_var, |
| .get_par = falcon_get_par, |
| .set_par = falcon_set_par, |
| .set_screen_base = set_screen_base, |
| .blank = falcon_blank, |
| .pan_display = falcon_pan_display, |
| }; |
| #endif |
| |
| #ifdef ATAFB_STE |
| static struct fb_hwswitch st_switch = { |
| .detect = stste_detect, |
| .encode_fix = stste_encode_fix, |
| .decode_var = stste_decode_var, |
| .encode_var = stste_encode_var, |
| .get_par = stste_get_par, |
| .set_par = stste_set_par, |
| .set_screen_base = stste_set_screen_base, |
| .pan_display = pan_display |
| }; |
| #endif |
| |
| #ifdef ATAFB_EXT |
| static struct fb_hwswitch ext_switch = { |
| .detect = ext_detect, |
| .encode_fix = ext_encode_fix, |
| .decode_var = ext_decode_var, |
| .encode_var = ext_encode_var, |
| .get_par = ext_get_par, |
| .set_par = ext_set_par, |
| }; |
| #endif |
| |
| static void ata_get_par(struct atafb_par *par) |
| { |
| if (current_par_valid) |
| *par = current_par; |
| else |
| fbhw->get_par(par); |
| } |
| |
| static void ata_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 do_fb_set_var(struct fb_var_screeninfo *var, int isactive) |
| { |
| int err, activate; |
| struct atafb_par par; |
| |
| err = fbhw->decode_var(var, &par); |
| if (err) |
| return err; |
| activate = var->activate; |
| if (((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) && isactive) |
| ata_set_par(&par); |
| fbhw->encode_var(var, &par); |
| var->activate = activate; |
| return 0; |
| } |
| |
| /* fbhw->encode_fix() must be called with fb_info->mm_lock held |
| * if it is called after the register_framebuffer() - not a case here |
| */ |
| static int atafb_get_fix(struct fb_fix_screeninfo *fix, struct fb_info *info) |
| { |
| struct atafb_par par; |
| int err; |
| // Get fix directly (case con == -1 before)?? |
| err = fbhw->decode_var(&info->var, &par); |
| if (err) |
| return err; |
| memset(fix, 0, sizeof(struct fb_fix_screeninfo)); |
| err = fbhw->encode_fix(fix, &par); |
| return err; |
| } |
| |
| static int atafb_get_var(struct fb_var_screeninfo *var, struct fb_info *info) |
| { |
| struct atafb_par par; |
| |
| ata_get_par(&par); |
| fbhw->encode_var(var, &par); |
| |
| return 0; |
| } |
| |
| // No longer called by fbcon! |
| // Still called by set_var internally |
| |
| static void atafb_set_disp(struct fb_info *info) |
| { |
| atafb_get_var(&info->var, info); |
| atafb_get_fix(&info->fix, info); |
| |
| /* Note: smem_start derives from phys_screen_base, not screen_base! */ |
| info->screen_base = (external_addr ? external_screen_base : |
| atari_stram_to_virt(info->fix.smem_start)); |
| } |
| |
| static int |
| atafb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) |
| { |
| if (!fbhw->pan_display) |
| return -EINVAL; |
| |
| return fbhw->pan_display(var, info); |
| } |
| |
| /* |
| * generic drawing routines; imageblit needs updating for image depth > 1 |
| */ |
| |
| static void atafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) |
| { |
| struct atafb_par *par = info->par; |
| int x2, y2; |
| u32 width, height; |
| |
| if (!rect->width || !rect->height) |
| return; |
| |
| #ifdef ATAFB_FALCON |
| if (info->var.bits_per_pixel == 16) { |
| cfb_fillrect(info, rect); |
| return; |
| } |
| #endif |
| |
| /* |
| * We could use hardware clipping but on many cards you get around |
| * hardware clipping by writing to framebuffer directly. |
| * */ |
| x2 = rect->dx + rect->width; |
| y2 = rect->dy + rect->height; |
| x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual; |
| y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual; |
| width = x2 - rect->dx; |
| height = y2 - rect->dy; |
| |
| if (info->var.bits_per_pixel == 1) |
| atafb_mfb_fillrect(info, par->next_line, rect->color, |
| rect->dy, rect->dx, height, width); |
| else if (info->var.bits_per_pixel == 2) |
| atafb_iplan2p2_fillrect(info, par->next_line, rect->color, |
| rect->dy, rect->dx, height, width); |
| else if (info->var.bits_per_pixel == 4) |
| atafb_iplan2p4_fillrect(info, par->next_line, rect->color, |
| rect->dy, rect->dx, height, width); |
| else |
| atafb_iplan2p8_fillrect(info, par->next_line, rect->color, |
| rect->dy, rect->dx, height, width); |
| |
| return; |
| } |
| |
| static void atafb_copyarea(struct fb_info *info, const struct fb_copyarea *area) |
| { |
| struct atafb_par *par = info->par; |
| int x2, y2; |
| u32 dx, dy, sx, sy, width, height; |
| int rev_copy = 0; |
| |
| #ifdef ATAFB_FALCON |
| if (info->var.bits_per_pixel == 16) { |
| cfb_copyarea(info, area); |
| return; |
| } |
| #endif |
| |
| /* clip the destination */ |
| x2 = area->dx + area->width; |
| y2 = area->dy + area->height; |
| dx = area->dx > 0 ? area->dx : 0; |
| dy = area->dy > 0 ? area->dy : 0; |
| x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual; |
| y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual; |
| width = x2 - dx; |
| height = y2 - dy; |
| |
| if (area->sx + dx < area->dx || area->sy + dy < area->dy) |
| return; |
| |
| /* update sx,sy */ |
| sx = area->sx + (dx - area->dx); |
| sy = area->sy + (dy - area->dy); |
| |
| /* the source must be completely inside the virtual screen */ |
| if (sx + width > info->var.xres_virtual || |
| sy + height > info->var.yres_virtual) |
| return; |
| |
| if (dy > sy || (dy == sy && dx > sx)) { |
| dy += height; |
| sy += height; |
| rev_copy = 1; |
| } |
| |
| if (info->var.bits_per_pixel == 1) |
| atafb_mfb_copyarea(info, par->next_line, sy, sx, dy, dx, height, width); |
| else if (info->var.bits_per_pixel == 2) |
| atafb_iplan2p2_copyarea(info, par->next_line, sy, sx, dy, dx, height, width); |
| else if (info->var.bits_per_pixel == 4) |
| atafb_iplan2p4_copyarea(info, par->next_line, sy, sx, dy, dx, height, width); |
| else |
| atafb_iplan2p8_copyarea(info, par->next_line, sy, sx, dy, dx, height, width); |
| |
| return; |
| } |
| |
| static void atafb_imageblit(struct fb_info *info, const struct fb_image *image) |
| { |
| struct atafb_par *par = info->par; |
| int x2, y2; |
| const char *src; |
| u32 dx, dy, width, height, pitch; |
| |
| #ifdef ATAFB_FALCON |
| if (info->var.bits_per_pixel == 16) { |
| cfb_imageblit(info, image); |
| return; |
| } |
| #endif |
| |
| /* |
| * We could use hardware clipping but on many cards you get around |
| * hardware clipping by writing to framebuffer directly like we are |
| * doing here. |
| */ |
| x2 = image->dx + image->width; |
| y2 = image->dy + image->height; |
| dx = image->dx; |
| dy = image->dy; |
| x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual; |
| y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual; |
| width = x2 - dx; |
| height = y2 - dy; |
| |
| if (image->depth == 1) { |
| // used for font data |
| src = image->data; |
| pitch = (image->width + 7) / 8; |
| while (height--) { |
| |
| if (info->var.bits_per_pixel == 1) |
| atafb_mfb_linefill(info, par->next_line, |
| dy, dx, width, src, |
| image->bg_color, image->fg_color); |
| else if (info->var.bits_per_pixel == 2) |
| atafb_iplan2p2_linefill(info, par->next_line, |
| dy, dx, width, src, |
| image->bg_color, image->fg_color); |
| else if (info->var.bits_per_pixel == 4) |
| atafb_iplan2p4_linefill(info, par->next_line, |
| dy, dx, width, src, |
| image->bg_color, image->fg_color); |
| else |
| atafb_iplan2p8_linefill(info, par->next_line, |
| dy, dx, width, src, |
| image->bg_color, image->fg_color); |
| dy++; |
| src += pitch; |
| } |
| } else { |
| c2p_iplan2(info->screen_base, image->data, dx, dy, width, |
| height, par->next_line, image->width, |
| info->var.bits_per_pixel); |
| } |
| } |
| |
| 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, ¤t_par, |
| sizeof(struct atafb_par))) |
| return -EFAULT; |
| return 0; |
| #endif |
| #ifdef FBCMD_SET_CURRENTPAR |
| case FBCMD_SET_CURRENTPAR: |
| if (copy_from_user(¤t_par, (void *)arg, |
| sizeof(struct atafb_par))) |
| return -EFAULT; |
| ata_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, info); |
| } |
| #if 0 |
| else |
| do_install_cmap(info); |
| #endif |
| return 0; |
| } |
| |
| /* |
| * New fbcon interface ... |
| */ |
| |
| /* check var by decoding var into hw par, rounding if necessary, |
| * then encoding hw par back into new, validated var */ |
| static int atafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) |
| { |
| int err; |
| struct atafb_par par; |
| |
| /* Validate wanted screen parameters */ |
| // if ((err = ata_decode_var(var, &par))) |
| err = fbhw->decode_var(var, &par); |
| if (err) |
| return err; |
| |
| /* Encode (possibly rounded) screen parameters */ |
| fbhw->encode_var(var, &par); |
| return 0; |
| } |
| |
| /* actually set hw par by decoding var, then setting hardware from |
| * hw par just decoded */ |
| static int atafb_set_par(struct fb_info *info) |
| { |
| struct atafb_par *par = info->par; |
| |
| /* Decode wanted screen parameters */ |
| fbhw->decode_var(&info->var, par); |
| mutex_lock(&info->mm_lock); |
| fbhw->encode_fix(&info->fix, par); |
| mutex_unlock(&info->mm_lock); |
| |
| /* Set new videomode */ |
| ata_set_par(par); |
| |
| return 0; |
| } |
| |
| |
| static struct fb_ops atafb_ops = { |
| .owner = THIS_MODULE, |
| __FB_DEFAULT_IOMEM_OPS_RDWR, |
| .fb_check_var = atafb_check_var, |
| .fb_set_par = atafb_set_par, |
| .fb_blank = atafb_blank, |
| .fb_pan_display = atafb_pan_display, |
| .fb_fillrect = atafb_fillrect, |
| .fb_copyarea = atafb_copyarea, |
| .fb_imageblit = atafb_imageblit, |
| .fb_ioctl = atafb_ioctl, |
| __FB_DEFAULT_IOMEM_OPS_MMAP, |
| }; |
| |
| 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; |
| } |
| |
| #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! |
| */ |
| p = strsep(&spec, ";"); |
| if (!p || !*p) |
| |