tgafb.c
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上传日期:2013-04-10
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- /*
- * linux/drivers/video/tgafb.c -- DEC 21030 TGA frame buffer device
- *
- * Copyright (C) 1999,2000 Martin Lucina, Tom Zerucha
- *
- * $Id: tgafb.c,v 1.12.2.3 2000/04/04 06:44:56 mato Exp $
- *
- * This driver is partly based on the original TGA framebuffer device, which
- * was partly based on the original TGA console driver, which are
- *
- * Copyright (C) 1997 Geert Uytterhoeven
- * Copyright (C) 1995 Jay Estabrook
- *
- * 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.
- */
- /* KNOWN PROBLEMS/TO DO ===================================================== *
- *
- * - How to set a single color register on 24-plane cards?
- *
- * - Hardware cursor/other text acceleration methods
- *
- * - Some redraws can stall kernel for several seconds
- * [This should now be solved by the fast memmove() patch in 2.3.6]
- *
- * KNOWN PROBLEMS/TO DO ==================================================== */
- #include <linux/module.h>
- #include <linux/sched.h>
- #include <linux/kernel.h>
- #include <linux/errno.h>
- #include <linux/string.h>
- #include <linux/mm.h>
- #include <linux/tty.h>
- #include <linux/slab.h>
- #include <linux/vmalloc.h>
- #include <linux/delay.h>
- #include <linux/interrupt.h>
- #include <linux/fb.h>
- #include <linux/init.h>
- #include <linux/pci.h>
- #include <linux/selection.h>
- #include <linux/console.h>
- #include <asm/io.h>
- #include <video/fbcon.h>
- #include <video/fbcon-cfb8.h>
- #include <video/fbcon-cfb32.h>
- #include "tgafb.h"
- /*
- * Global declarations
- */
- static struct tgafb_info fb_info;
- static struct tgafb_par current_par;
- static int current_par_valid = 0;
- static struct display disp;
- static char default_fontname[40] __initdata = { 0 };
- static struct fb_var_screeninfo default_var;
- static int default_var_valid = 0;
- static int currcon = 0;
- static struct { u_char red, green, blue, pad; } palette[256];
- #ifdef FBCON_HAS_CFB32
- static u32 fbcon_cfb32_cmap[16];
- #endif
- /*
- * Hardware presets
- */
- static unsigned int fb_offset_presets[4] = {
- TGA_8PLANE_FB_OFFSET,
- TGA_24PLANE_FB_OFFSET,
- 0xffffffff,
- TGA_24PLUSZ_FB_OFFSET
- };
- static unsigned int deep_presets[4] = {
- 0x00014000,
- 0x0001440d,
- 0xffffffff,
- 0x0001441d
- };
- static unsigned int rasterop_presets[4] = {
- 0x00000003,
- 0x00000303,
- 0xffffffff,
- 0x00000303
- };
- static unsigned int mode_presets[4] = {
- 0x00002000,
- 0x00002300,
- 0xffffffff,
- 0x00002300
- };
- static unsigned int base_addr_presets[4] = {
- 0x00000000,
- 0x00000001,
- 0xffffffff,
- 0x00000001
- };
- /*
- * Predefined video modes
- * This is a subset of the standard VESA modes, recalculated from XFree86.
- *
- * XXX Should we store these in terms of the encoded par structs? Even better,
- * fbcon should provide a general mechanism for doing something like this.
- */
- static struct {
- const char *name;
- struct fb_var_screeninfo var;
- } tgafb_predefined[] __initdata = {
- { "640x480-60", {
- 640, 480, 640, 480, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 39722, 40, 24, 32, 11, 96, 2,
- 0,
- FB_VMODE_NONINTERLACED
- }},
- { "800x600-56", {
- 800, 600, 800, 600, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 27777, 128, 24, 22, 1, 72, 2,
- 0,
- FB_VMODE_NONINTERLACED
- }},
- { "640x480-72", {
- 640, 480, 640, 480, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 31746, 144, 40, 30, 8, 40, 3,
- 0,
- FB_VMODE_NONINTERLACED
- }},
- { "800x600-60", {
- 800, 600, 800, 600, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 25000, 88, 40, 23, 1, 128, 4,
- FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED
- }},
- { "800x600-72", {
- 800, 600, 800, 600, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 20000, 64, 56, 23, 37, 120, 6,
- FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED
- }},
- { "1024x768-60", {
- 1024, 768, 1024, 768, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 15384, 168, 8, 29, 3, 144, 6,
- 0,
- FB_VMODE_NONINTERLACED
- }},
- { "1152x864-60", {
- 1152, 864, 1152, 864, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 11123, 208, 64, 16, 4, 256, 8,
- 0,
- FB_VMODE_NONINTERLACED
- }},
- { "1024x768-70", {
- 1024, 768, 1024, 768, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 13333, 144, 24, 29, 3, 136, 6,
- 0,
- FB_VMODE_NONINTERLACED
- }},
- { "1024x768-76", {
- 1024, 768, 1024, 768, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 11764, 208, 8, 36, 16, 120, 3,
- 0,
- FB_VMODE_NONINTERLACED
- }},
- { "1152x864-70", {
- 1152, 864, 1152, 864, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 10869, 106, 56, 20, 1, 160, 10,
- 0,
- FB_VMODE_NONINTERLACED
- }},
- { "1280x1024-61", {
- 1280, 1024, 1280, 1024, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 9090, 200, 48, 26, 1, 184, 3,
- 0,
- FB_VMODE_NONINTERLACED
- }},
- { "1024x768-85", {
- 1024, 768, 1024, 768, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 10111, 192, 32, 34, 14, 160, 6,
- 0,
- FB_VMODE_NONINTERLACED
- }},
- { "1280x1024-70", {
- 1280, 1024, 1280, 1024, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 7905, 224, 32, 28, 8, 160, 8,
- 0,
- FB_VMODE_NONINTERLACED
- }},
- { "1152x864-84", {
- 1152, 864, 1152, 864, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 7407, 184, 312, 32, 0, 128, 12,
- 0,
- FB_VMODE_NONINTERLACED
- }},
- { "1280x1024-76", {
- 1280, 1024, 1280, 1024, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 7407, 248, 32, 34, 3, 104, 3,
- 0,
- FB_VMODE_NONINTERLACED
- }},
- { "1280x1024-85", {
- 1280, 1024, 1280, 1024, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 6349, 224, 64, 44, 1, 160, 3,
- 0,
- FB_VMODE_NONINTERLACED
- }},
- /* These are modes used by the two fixed-frequency monitors I have at home.
- * You may or may not find these useful.
- */
- { "WYSE1", { /* 1280x1024 @ 72 Hz, 130 Mhz clock */
- 1280, 1024, 1280, 1024, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 7692, 192, 32, 47, 0, 192, 5,
- FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED
- }},
- { "IBM3", { /* 1280x1024 @ 70 Hz, 120 Mhz clock */
- 1280, 1024, 1280, 1024, 0, 0, 0, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCELF_TEXT, 8333, 192, 32, 47, 0, 192, 5,
- 0,
- FB_VMODE_NONINTERLACED
- }}
- };
- #define NUM_TOTAL_MODES ARRAY_SIZE(tgafb_predefined)
- /*
- * Interface used by the world
- */
- static void tgafb_detect(void);
- static int tgafb_encode_fix(struct fb_fix_screeninfo *fix, const void *fb_par,
- struct fb_info_gen *info);
- static int tgafb_decode_var(const struct fb_var_screeninfo *var, void *fb_par,
- struct fb_info_gen *info);
- static int tgafb_encode_var(struct fb_var_screeninfo *var, const void *fb_par,
- struct fb_info_gen *info);
- static void tgafb_get_par(void *fb_par, struct fb_info_gen *info);
- static void tgafb_set_par(const void *fb_par, struct fb_info_gen *info);
- static int tgafb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
- u_int *transp, struct fb_info *info);
- static int tgafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
- u_int transp, struct fb_info *info);
- static int tgafb_blank(int blank, struct fb_info_gen *info);
- static void tgafb_set_disp(const void *fb_par, struct display *disp,
- struct fb_info_gen *info);
- #ifndef MODULE
- int tgafb_setup(char*);
- #endif
- static void tgafb_set_pll(int f);
- #if 1
- static int tgafb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
- struct fb_info *info);
- static void tgafb_update_palette(void);
- #endif
- /*
- * Chipset specific functions
- */
- static void tgafb_detect(void)
- {
- return;
- }
- static int tgafb_encode_fix(struct fb_fix_screeninfo *fix, const void *fb_par,
- struct fb_info_gen *info)
- {
- struct tgafb_par *par = (struct tgafb_par *)fb_par;
- strcpy(fix->id, fb_info.gen.info.modename);
- fix->type = FB_TYPE_PACKED_PIXELS;
- fix->type_aux = 0;
- if (fb_info.tga_type == TGA_TYPE_8PLANE) {
- fix->visual = FB_VISUAL_PSEUDOCOLOR;
- } else {
- fix->visual = FB_VISUAL_TRUECOLOR;
- }
- fix->line_length = par->xres * (par->bits_per_pixel >> 3);
- fix->smem_start = fb_info.tga_fb_base;
- fix->smem_len = fix->line_length * par->yres;
- fix->mmio_start = fb_info.tga_regs_base;
- fix->mmio_len = 0x1000; /* Is this sufficient? */
- fix->xpanstep = fix->ypanstep = fix->ywrapstep = 0;
- fix->accel = FB_ACCEL_DEC_TGA;
- return 0;
- }
- static int tgafb_decode_var(const struct fb_var_screeninfo *var, void *fb_par,
- struct fb_info_gen *info)
- {
- struct tgafb_par *par = (struct tgafb_par *)fb_par;
- /* round up some */
- if (fb_info.tga_type == TGA_TYPE_8PLANE) {
- if (var->bits_per_pixel > 8) {
- return -EINVAL;
- }
- par->bits_per_pixel = 8;
- } else {
- if (var->bits_per_pixel > 32) {
- return -EINVAL;
- }
- par->bits_per_pixel = 32;
- }
- /* check the values for sanity */
- if (var->xres_virtual != var->xres ||
- var->yres_virtual != var->yres ||
- var->nonstd || (1000000000/var->pixclock) > TGA_PLL_MAX_FREQ ||
- (var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED
- #if 0 /* fbmon not done. uncomment for 2.5.x -brad */
- || !fbmon_valid_timings(var->pixclock, var->htotal, var->vtotal, info))
- #else
- )
- #endif
- return -EINVAL;
- /* encode video timings */
- par->htimings = ((var->xres/4) & TGA_HORIZ_ACT_LSB) |
- (((var->xres/4) & 0x600 << 19) & TGA_HORIZ_ACT_MSB);
- par->vtimings = (var->yres & TGA_VERT_ACTIVE);
- par->htimings |= ((var->right_margin/4) << 9) & TGA_HORIZ_FP;
- par->vtimings |= (var->lower_margin << 11) & TGA_VERT_FP;
- par->htimings |= ((var->hsync_len/4) << 14) & TGA_HORIZ_SYNC;
- par->vtimings |= (var->vsync_len << 16) & TGA_VERT_SYNC;
- par->htimings |= ((var->left_margin/4) << 21) & TGA_HORIZ_BP;
- par->vtimings |= (var->upper_margin << 22) & TGA_VERT_BP;
- if (var->sync & FB_SYNC_HOR_HIGH_ACT)
- par->htimings |= TGA_HORIZ_POLARITY;
- if (var->sync & FB_SYNC_VERT_HIGH_ACT)
- par->vtimings |= TGA_VERT_POLARITY;
- if (var->sync & FB_SYNC_ON_GREEN) {
- par->sync_on_green = 1;
- } else {
- par->sync_on_green = 0;
- }
- /* store other useful values in par */
- par->xres = var->xres;
- par->yres = var->yres;
- par->pll_freq = 1000000000/var->pixclock;
- par->bits_per_pixel = var->bits_per_pixel;
- return 0;
- }
- static int tgafb_encode_var(struct fb_var_screeninfo *var, const void *fb_par,
- struct fb_info_gen *info)
- {
- struct tgafb_par *par = (struct tgafb_par *)fb_par;
- /* decode video timings */
- var->xres = ((par->htimings & TGA_HORIZ_ACT_LSB) | ((par->htimings & TGA_HORIZ_ACT_MSB) >> 19)) * 4;
- var->yres = (par->vtimings & TGA_VERT_ACTIVE);
- var->right_margin = ((par->htimings & TGA_HORIZ_FP) >> 9) * 4;
- var->lower_margin = ((par->vtimings & TGA_VERT_FP) >> 11);
- var->hsync_len = ((par->htimings & TGA_HORIZ_SYNC) >> 14) * 4;
- var->vsync_len = ((par->vtimings & TGA_VERT_SYNC) >> 16);
- var->left_margin = ((par->htimings & TGA_HORIZ_BP) >> 21) * 4;
- var->upper_margin = ((par->vtimings & TGA_VERT_BP) >> 22);
- if (par->htimings & TGA_HORIZ_POLARITY)
- var->sync |= FB_SYNC_HOR_HIGH_ACT;
- if (par->vtimings & TGA_VERT_POLARITY)
- var->sync |= FB_SYNC_VERT_HIGH_ACT;
- if (par->sync_on_green == 1)
- var->sync |= FB_SYNC_ON_GREEN;
- var->xres_virtual = var->xres;
- var->yres_virtual = var->yres;
- var->xoffset = var->yoffset = 0;
- /* depth-related */
- if (fb_info.tga_type == TGA_TYPE_8PLANE) {
- var->red.offset = 0;
- var->green.offset = 0;
- var->blue.offset = 0;
- } else {
- var->red.offset = 16;
- var->green.offset = 8;
- var->blue.offset = 0;
- }
- var->bits_per_pixel = par->bits_per_pixel;
- var->grayscale = 0;
- var->red.length = var->green.length = var->blue.length = 8;
- var->red.msb_right = var->green.msb_right = var->blue.msb_right = 0;
- var->transp.offset = var->transp.length = var->transp.msb_right = 0;
- /* others */
- var->xoffset = var->yoffset = 0;
- var->pixclock = 1000000000/par->pll_freq;
- var->nonstd = 0;
- var->activate = 0;
- var->height = var->width = -1;
- var->accel_flags = 0;
- return 0;
- }
- static void tgafb_get_par(void *fb_par, struct fb_info_gen *info)
- {
- struct tgafb_par *par = (struct tgafb_par *)fb_par;
- if (current_par_valid)
- *par = current_par;
- else {
- if (fb_info.tga_type == TGA_TYPE_8PLANE)
- default_var.bits_per_pixel = 8;
- else
- default_var.bits_per_pixel = 32;
- tgafb_decode_var(&default_var, par, info);
- }
- }
- static void tgafb_set_par(const void *fb_par, struct fb_info_gen *info)
- {
- int i, j;
- struct tgafb_par *par = (struct tgafb_par *)fb_par;
- #if 0
- /* XXX this will break console switching with X11, maybe I need to test KD_GRAPHICS? */
- /* if current_par is valid, check to see if we need to change anything */
- if (current_par_valid) {
- if (!memcmp(par, ¤t_par, sizeof current_par)) {
- return;
- }
- }
- #endif
- current_par = *par;
- current_par_valid = 1;
- /* first, disable video */
- TGA_WRITE_REG(TGA_VALID_VIDEO | TGA_VALID_BLANK, TGA_VALID_REG);
-
- /* write the DEEP register */
- while (TGA_READ_REG(TGA_CMD_STAT_REG) & 1) /* wait for not busy */
- continue;
- mb();
- TGA_WRITE_REG(deep_presets[fb_info.tga_type], TGA_DEEP_REG);
- while (TGA_READ_REG(TGA_CMD_STAT_REG) & 1) /* wait for not busy */
- continue;
- mb();
- /* write some more registers */
- TGA_WRITE_REG(rasterop_presets[fb_info.tga_type], TGA_RASTEROP_REG);
- TGA_WRITE_REG(mode_presets[fb_info.tga_type], TGA_MODE_REG);
- TGA_WRITE_REG(base_addr_presets[fb_info.tga_type], TGA_BASE_ADDR_REG);
- /* calculate & write the PLL */
- tgafb_set_pll(par->pll_freq);
- /* write some more registers */
- TGA_WRITE_REG(0xffffffff, TGA_PLANEMASK_REG);
- TGA_WRITE_REG(0xffffffff, TGA_PIXELMASK_REG);
- TGA_WRITE_REG(0x12345678, TGA_BLOCK_COLOR0_REG);
- TGA_WRITE_REG(0x12345678, TGA_BLOCK_COLOR1_REG);
- /* init video timing regs */
- TGA_WRITE_REG(par->htimings, TGA_HORIZ_REG);
- TGA_WRITE_REG(par->vtimings, TGA_VERT_REG);
- /* initalise RAMDAC */
- if (fb_info.tga_type == TGA_TYPE_8PLANE) {
- /* init BT485 RAMDAC registers */
- BT485_WRITE(0xa2 | (par->sync_on_green ? 0x8 : 0x0), BT485_CMD_0);
- BT485_WRITE(0x01, BT485_ADDR_PAL_WRITE);
- BT485_WRITE(0x14, BT485_CMD_3); /* cursor 64x64 */
- BT485_WRITE(0x40, BT485_CMD_1);
- BT485_WRITE(0x20, BT485_CMD_2); /* cursor off, for now */
- BT485_WRITE(0xff, BT485_PIXEL_MASK);
- /* fill palette registers */
- BT485_WRITE(0x00, BT485_ADDR_PAL_WRITE);
- TGA_WRITE_REG(BT485_DATA_PAL, TGA_RAMDAC_SETUP_REG);
- for (i = 0; i < 16; i++) {
- j = color_table[i];
- TGA_WRITE_REG(default_red[j]|(BT485_DATA_PAL<<8), TGA_RAMDAC_REG);
- TGA_WRITE_REG(default_grn[j]|(BT485_DATA_PAL<<8), TGA_RAMDAC_REG);
- TGA_WRITE_REG(default_blu[j]|(BT485_DATA_PAL<<8), TGA_RAMDAC_REG);
- palette[i].red=default_red[j];
- palette[i].green=default_grn[j];
- palette[i].blue=default_blu[j];
- }
- for (i = 0; i < 240*3; i += 4) {
- TGA_WRITE_REG(0x55|(BT485_DATA_PAL<<8), TGA_RAMDAC_REG);
- TGA_WRITE_REG(0x00|(BT485_DATA_PAL<<8), TGA_RAMDAC_REG);
- TGA_WRITE_REG(0x00|(BT485_DATA_PAL<<8), TGA_RAMDAC_REG);
- TGA_WRITE_REG(0x00|(BT485_DATA_PAL<<8), TGA_RAMDAC_REG);
- }
- } else { /* 24-plane or 24plusZ */
- /* init BT463 registers */
- BT463_WRITE(BT463_REG_ACC, BT463_CMD_REG_0, 0x40);
- BT463_WRITE(BT463_REG_ACC, BT463_CMD_REG_1, 0x08);
- BT463_WRITE(BT463_REG_ACC, BT463_CMD_REG_2,
- (par->sync_on_green ? 0x80 : 0x40));
- BT463_WRITE(BT463_REG_ACC, BT463_READ_MASK_0, 0xff);
- BT463_WRITE(BT463_REG_ACC, BT463_READ_MASK_1, 0xff);
- BT463_WRITE(BT463_REG_ACC, BT463_READ_MASK_2, 0xff);
- BT463_WRITE(BT463_REG_ACC, BT463_READ_MASK_3, 0x0f);
- BT463_WRITE(BT463_REG_ACC, BT463_BLINK_MASK_0, 0x00);
- BT463_WRITE(BT463_REG_ACC, BT463_BLINK_MASK_1, 0x00);
- BT463_WRITE(BT463_REG_ACC, BT463_BLINK_MASK_2, 0x00);
- BT463_WRITE(BT463_REG_ACC, BT463_BLINK_MASK_3, 0x00);
- /* fill the palette */
- BT463_LOAD_ADDR(0x0000);
- TGA_WRITE_REG((BT463_PALETTE<<2), TGA_RAMDAC_REG);
- for (i = 0; i < 16; i++) {
- j = color_table[i];
- TGA_WRITE_REG(default_red[j]|(BT463_PALETTE<<10), TGA_RAMDAC_REG);
- TGA_WRITE_REG(default_grn[j]|(BT463_PALETTE<<10), TGA_RAMDAC_REG);
- TGA_WRITE_REG(default_blu[j]|(BT463_PALETTE<<10), TGA_RAMDAC_REG);
- }
- for (i = 0; i < 512*3; i += 4) {
- TGA_WRITE_REG(0x55|(BT463_PALETTE<<10), TGA_RAMDAC_REG);
- TGA_WRITE_REG(0x00|(BT463_PALETTE<<10), TGA_RAMDAC_REG);
- TGA_WRITE_REG(0x00|(BT463_PALETTE<<10), TGA_RAMDAC_REG);
- TGA_WRITE_REG(0x00|(BT463_PALETTE<<10), TGA_RAMDAC_REG);
- }
- /* fill window type table after start of vertical retrace */
- while (!(TGA_READ_REG(TGA_INTR_STAT_REG) & 0x01))
- continue;
- TGA_WRITE_REG(0x01, TGA_INTR_STAT_REG);
- mb();
- while (!(TGA_READ_REG(TGA_INTR_STAT_REG) & 0x01))
- continue;
- TGA_WRITE_REG(0x01, TGA_INTR_STAT_REG);
- BT463_LOAD_ADDR(BT463_WINDOW_TYPE_BASE);
- TGA_WRITE_REG((BT463_REG_ACC<<2), TGA_RAMDAC_SETUP_REG);
-
- for (i = 0; i < 16; i++) {
- TGA_WRITE_REG(0x00|(BT463_REG_ACC<<10), TGA_RAMDAC_REG);
- TGA_WRITE_REG(0x01|(BT463_REG_ACC<<10), TGA_RAMDAC_REG);
- TGA_WRITE_REG(0x80|(BT463_REG_ACC<<10), TGA_RAMDAC_REG);
- }
-
- }
- /* finally, enable video scan
- (and pray for the monitor... :-) */
- TGA_WRITE_REG(TGA_VALID_VIDEO, TGA_VALID_REG);
- }
- #define DIFFCHECK(x) { if( m <= 0x3f ) {
- int delta = f - (TGA_PLL_BASE_FREQ * (x)) / (r << shift);
- if (delta < 0) delta = -delta;
- if (delta < min_diff) min_diff = delta, vm = m, va = a, vr = r; } }
- static void tgafb_set_pll(int f)
- {
- int n, shift, base, min_diff, target;
- int r,a,m,vm = 34, va = 1, vr = 30;
- for( r = 0 ; r < 12 ; r++ )
- TGA_WRITE_REG(!r, TGA_CLOCK_REG);
- if (f > TGA_PLL_MAX_FREQ)
- f = TGA_PLL_MAX_FREQ;
- if (f >= TGA_PLL_MAX_FREQ / 2)
- shift = 0;
- else if (f >= TGA_PLL_MAX_FREQ / 4)
- shift = 1;
- else
- shift = 2;
- TGA_WRITE_REG(shift & 1, TGA_CLOCK_REG);
- TGA_WRITE_REG(shift >> 1, TGA_CLOCK_REG);
- for( r = 0 ; r < 10 ; r++ ) {
- TGA_WRITE_REG(0, TGA_CLOCK_REG);
- }
- if (f <= 120000) {
- TGA_WRITE_REG(0, TGA_CLOCK_REG);
- TGA_WRITE_REG(0, TGA_CLOCK_REG);
- }
- else if (f <= 200000) {
- TGA_WRITE_REG(1, TGA_CLOCK_REG);
- TGA_WRITE_REG(0, TGA_CLOCK_REG);
- }
- else {
- TGA_WRITE_REG(0, TGA_CLOCK_REG);
- TGA_WRITE_REG(1, TGA_CLOCK_REG);
- }
- TGA_WRITE_REG(1, TGA_CLOCK_REG);
- TGA_WRITE_REG(0, TGA_CLOCK_REG);
- TGA_WRITE_REG(0, TGA_CLOCK_REG);
- TGA_WRITE_REG(1, TGA_CLOCK_REG);
- TGA_WRITE_REG(0, TGA_CLOCK_REG);
- TGA_WRITE_REG(1, TGA_CLOCK_REG);
- target = (f << shift) / TGA_PLL_BASE_FREQ;
- min_diff = TGA_PLL_MAX_FREQ;
- r = 7 / target;
- if (!r)
- r = 1;
- base = target * r;
- while (base < 449) {
- for (n = base < 7 ? 7 : base ; n < base + target && n < 449; n++) {
- m = ((n + 3) / 7) - 1;
- a = 0;
- DIFFCHECK((m + 1) * 7);
- m++;
- DIFFCHECK((m + 1) * 7);
- m = (n / 6) - 1;
- if( (a = n % 6))
- DIFFCHECK( n );
- }
- r++;
- base += target;
- }
- vr--;
- for( r=0; r<8 ; r++) {
- TGA_WRITE_REG((vm >> r) & 1, TGA_CLOCK_REG);
- }
- for( r=0; r<8 ; r++) {
- TGA_WRITE_REG((va >> r) & 1, TGA_CLOCK_REG);
- }
- for( r=0; r<7 ; r++) {
- TGA_WRITE_REG((vr >> r) & 1, TGA_CLOCK_REG);
- }
- TGA_WRITE_REG(((vr >> 7) & 1)|2, TGA_CLOCK_REG);
- }
- static int tgafb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
- u_int *transp, struct fb_info *info)
- {
- if (regno > 255)
- return 1;
- *red = (palette[regno].red<<8) | palette[regno].red;
- *green = (palette[regno].green<<8) | palette[regno].green;
- *blue = (palette[regno].blue<<8) | palette[regno].blue;
- *transp = 0;
- return 0;
- }
- static int tgafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
- u_int transp, struct fb_info *info)
- {
- if (regno > 255)
- return 1;
- red >>= 8;
- green >>= 8;
- blue >>= 8;
- palette[regno].red = red;
- palette[regno].green = green;
- palette[regno].blue = blue;
- #ifdef FBCON_HAS_CFB32
- if (regno < 16 && fb_info.tga_type != TGA_TYPE_8PLANE)
- fbcon_cfb32_cmap[regno] = (red << 16) | (green << 8) | blue;
- #endif
- if (fb_info.tga_type == TGA_TYPE_8PLANE) {
- BT485_WRITE(regno, BT485_ADDR_PAL_WRITE);
- TGA_WRITE_REG(BT485_DATA_PAL, TGA_RAMDAC_SETUP_REG);
- TGA_WRITE_REG(red|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG);
- TGA_WRITE_REG(green|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG);
- TGA_WRITE_REG(blue|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG);
- }
- /* How to set a single color register on 24-plane cards?? */
- return 0;
- }
- #if 1
- /*
- * FIXME: since I don't know how to set a single arbitrary color register
- * on 24-plane cards, all color palette registers have to be updated
- */
- static int tgafb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
- struct fb_info *info)
- {
- int err;
- if (!fb_display[con].cmap.len) { /* no colormap allocated? */
- if ((err = fb_alloc_cmap(&fb_display[con].cmap, 256, 0)))
- return err;
- }
- if (con == currcon) { /* current console? */
- err = fb_set_cmap(cmap, kspc, tgafb_setcolreg, info);
- #if 1
- if (fb_info.tga_type != TGA_TYPE_8PLANE)
- tgafb_update_palette();
- #endif
- return err;
- } else
- fb_copy_cmap(cmap, &fb_display[con].cmap, kspc ? 0 : 1);
- return 0;
- }
- static void tgafb_update_palette(void)
- {
- int i;
- BT463_LOAD_ADDR(0x0000);
- TGA_WRITE_REG((BT463_PALETTE<<2), TGA_RAMDAC_REG);
- for (i = 0; i < 256; i++) {
- TGA_WRITE_REG(palette[i].red|(BT463_PALETTE<<10), TGA_RAMDAC_REG);
- TGA_WRITE_REG(palette[i].green|(BT463_PALETTE<<10), TGA_RAMDAC_REG);
- TGA_WRITE_REG(palette[i].blue|(BT463_PALETTE<<10), TGA_RAMDAC_REG);
- }
- }
- #endif
- static int tgafb_blank(int blank, struct fb_info_gen *info)
- {
- static int tga_vesa_blanked = 0;
- u32 vhcr, vvcr, vvvr;
- unsigned long flags;
-
- save_flags(flags);
- cli();
- vhcr = TGA_READ_REG(TGA_HORIZ_REG);
- vvcr = TGA_READ_REG(TGA_VERT_REG);
- vvvr = TGA_READ_REG(TGA_VALID_REG) & ~(TGA_VALID_VIDEO | TGA_VALID_BLANK);
- switch (blank) {
- case 0: /* Unblanking */
- if (tga_vesa_blanked) {
- TGA_WRITE_REG(vhcr & 0xbfffffff, TGA_HORIZ_REG);
- TGA_WRITE_REG(vvcr & 0xbfffffff, TGA_VERT_REG);
- tga_vesa_blanked = 0;
- }
- TGA_WRITE_REG(vvvr | TGA_VALID_VIDEO, TGA_VALID_REG);
- break;
- case 1: /* Normal blanking */
- TGA_WRITE_REG(vvvr | TGA_VALID_VIDEO | TGA_VALID_BLANK, TGA_VALID_REG);
- break;
- case 2: /* VESA blank (vsync off) */
- TGA_WRITE_REG(vvcr | 0x40000000, TGA_VERT_REG);
- TGA_WRITE_REG(vvvr | TGA_VALID_BLANK, TGA_VALID_REG);
- tga_vesa_blanked = 1;
- break;
- case 3: /* VESA blank (hsync off) */
- TGA_WRITE_REG(vhcr | 0x40000000, TGA_HORIZ_REG);
- TGA_WRITE_REG(vvvr | TGA_VALID_BLANK, TGA_VALID_REG);
- tga_vesa_blanked = 1;
- break;
- case 4: /* Poweroff */
- TGA_WRITE_REG(vhcr | 0x40000000, TGA_HORIZ_REG);
- TGA_WRITE_REG(vvcr | 0x40000000, TGA_VERT_REG);
- TGA_WRITE_REG(vvvr | TGA_VALID_BLANK, TGA_VALID_REG);
- tga_vesa_blanked = 1;
- break;
- }
- restore_flags(flags);
- return 0;
- }
- static void tgafb_set_disp(const void *fb_par, struct display *disp,
- struct fb_info_gen *info)
- {
- disp->screen_base = (char *)fb_info.tga_fb_base;
- switch (fb_info.tga_type) {
- #ifdef FBCON_HAS_CFB8
- case TGA_TYPE_8PLANE:
- disp->dispsw = &fbcon_cfb8;
- break;
- #endif
- #ifdef FBCON_HAS_CFB32
- case TGA_TYPE_24PLANE:
- case TGA_TYPE_24PLUSZ:
- disp->dispsw = &fbcon_cfb32;
- disp->dispsw_data = &fbcon_cfb32_cmap;
- break;
- #endif
- default:
- disp->dispsw = &fbcon_dummy;
- }
- disp->scrollmode = SCROLL_YREDRAW;
- }
- struct fbgen_hwswitch tgafb_hwswitch = {
- tgafb_detect, tgafb_encode_fix, tgafb_decode_var, tgafb_encode_var, tgafb_get_par,
- tgafb_set_par, tgafb_getcolreg, tgafb_setcolreg, NULL, tgafb_blank,
- tgafb_set_disp
- };
- /*
- * Hardware Independent functions
- */
- /*
- * Frame buffer operations
- */
- static struct fb_ops tgafb_ops = {
- owner: THIS_MODULE,
- fb_get_fix: fbgen_get_fix,
- fb_get_var: fbgen_get_var,
- fb_set_var: fbgen_set_var,
- fb_get_cmap: fbgen_get_cmap,
- fb_set_cmap: tgafb_set_cmap,
- };
- #ifndef MODULE
- /*
- * Setup
- */
- int __init tgafb_setup(char *options) {
- char *this_opt;
- int i;
-
- if (options && *options) {
- while ((this_opt = strsep(&options, ",")) != NULL) {
- if (!*this_opt) { continue; }
-
- if (!strncmp(this_opt, "font:", 5)) {
- strncpy(default_fontname, this_opt+5, sizeof default_fontname);
- }
- else if (!strncmp(this_opt, "mode:", 5)) {
- for (i = 0; i < NUM_TOTAL_MODES; i++) {
- if (!strcmp(this_opt+5, tgafb_predefined[i].name))
- default_var = tgafb_predefined[i].var;
- default_var_valid = 1;
- }
- }
-
- else {
- printk(KERN_ERR "tgafb: unknown parameter %sn", this_opt);
- }
- }
- }
- return 0;
- }
- #endif
- /*
- * Initialisation
- */
- int __init tgafb_init(void)
- {
- struct pci_dev *pdev;
- pdev = pci_find_device(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TGA, NULL);
- if (!pdev)
- return -ENXIO;
- /* divine board type */
- fb_info.tga_mem_base = (unsigned long)ioremap(pdev->resource[0].start, 0);
- fb_info.tga_type = (readl(fb_info.tga_mem_base) >> 12) & 0x0f;
- fb_info.tga_regs_base = fb_info.tga_mem_base + TGA_REGS_OFFSET;
- fb_info.tga_fb_base = (fb_info.tga_mem_base
- + fb_offset_presets[fb_info.tga_type]);
- pci_read_config_byte(pdev, PCI_REVISION_ID, &fb_info.tga_chip_rev);
- /* setup framebuffer */
- fb_info.gen.info.node = -1;
- fb_info.gen.info.flags = FBINFO_FLAG_DEFAULT;
- fb_info.gen.info.fbops = &tgafb_ops;
- fb_info.gen.info.disp = &disp;
- fb_info.gen.info.changevar = NULL;
- fb_info.gen.info.switch_con = &fbgen_switch;
- fb_info.gen.info.updatevar = &fbgen_update_var;
- fb_info.gen.info.blank = &fbgen_blank;
- strcpy(fb_info.gen.info.fontname, default_fontname);
- fb_info.gen.parsize = sizeof (struct tgafb_par);
- fb_info.gen.fbhw = &tgafb_hwswitch;
- fb_info.gen.fbhw->detect();
- printk (KERN_INFO "tgafb: DC21030 [TGA] detected, rev=0x%02xn", fb_info.tga_chip_rev);
- printk (KERN_INFO "tgafb: at PCI bus %d, device %d, function %dn",
- pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
-
- switch (fb_info.tga_type)
- {
- case TGA_TYPE_8PLANE:
- strcpy (fb_info.gen.info.modename,"Digital ZLXp-E1");
- break;
- case TGA_TYPE_24PLANE:
- strcpy (fb_info.gen.info.modename,"Digital ZLXp-E2");
- break;
- case TGA_TYPE_24PLUSZ:
- strcpy (fb_info.gen.info.modename,"Digital ZLXp-E3");
- break;
- }
- /* This should give a reasonable default video mode */
- if (!default_var_valid) {
- default_var = tgafb_predefined[0].var;
- }
- fbgen_get_var(&disp.var, -1, &fb_info.gen.info);
- disp.var.activate = FB_ACTIVATE_NOW;
- fbgen_do_set_var(&disp.var, 1, &fb_info.gen);
- fbgen_set_disp(-1, &fb_info.gen);
- fbgen_install_cmap(0, &fb_info.gen);
- if (register_framebuffer(&fb_info.gen.info) < 0)
- return -EINVAL;
- printk(KERN_INFO "fb%d: %s frame buffer device at 0x%lxn",
- GET_FB_IDX(fb_info.gen.info.node), fb_info.gen.info.modename,
- pdev->resource[0].start);
- return 0;
- }
- /*
- * Cleanup
- */
- void __exit tgafb_cleanup(void)
- {
- unregister_framebuffer(&fb_info.gen.info);
- }
- /*
- * Modularisation
- */
- #ifdef MODULE
- MODULE_LICENSE("GPL");
- module_init(tgafb_init);
- #endif
- module_exit(tgafb_cleanup);