[RFC: 2.6 patch] remove the broken FB_S3TRIO driver

From: Adrian Bunk
Date: Thu Jan 04 2007 - 13:55:04 EST

The FB_S3TRIO driver:
- has been marked as BROKEN for more than two years and
- is still marked as BROKEN.

Drivers that had been marked as BROKEN for such a long time seem to be
unlikely to be revived in the forseeable future.

But if anyone wants to ever revive this driver, the code is still
present in the older kernel releases.

Signed-off-by: Adrian Bunk <bunk@xxxxxxxxx>

---

drivers/video/Kconfig | 6
drivers/video/Makefile | 1
drivers/video/S3triofb.c | 790 ---------------------------------------
include/video/s3blit.h | 79 ---
4 files changed, 876 deletions(-)

--- linux-2.6.20-rc2-mm1/drivers/video/Kconfig.old 2007-01-04 19:37:20.000000000 +0100
+++ linux-2.6.20-rc2-mm1/drivers/video/Kconfig 2007-01-04 19:37:31.000000000 +0100
@@ -1113,12 +1113,6 @@
help
Say Y here if you want to control the backlight of your display.

-config FB_S3TRIO
- bool "S3 Trio display support"
- depends on (FB = y) && PPC && BROKEN
- help
- If you have a S3 Trio say Y. Say N for S3 Virge.
-
config FB_S3
tristate "S3 Trio/Virge support"
depends on FB && PCI
--- linux-2.6.20-rc2-mm1/drivers/video/Makefile.old 2007-01-04 19:37:46.000000000 +0100
+++ linux-2.6.20-rc2-mm1/drivers/video/Makefile 2007-01-04 19:37:50.000000000 +0100
@@ -48,7 +48,6 @@
obj-$(CONFIG_FB_VALKYRIE) += valkyriefb.o
obj-$(CONFIG_FB_CT65550) += chipsfb.o
obj-$(CONFIG_FB_IMSTT) += imsttfb.o
-obj-$(CONFIG_FB_S3TRIO) += S3triofb.o
obj-$(CONFIG_FB_FM2) += fm2fb.o
obj-$(CONFIG_FB_CYBLA) += cyblafb.o
obj-$(CONFIG_FB_TRIDENT) += tridentfb.o
--- linux-2.6.20-rc2-mm1/include/video/s3blit.h 2006-11-29 22:57:37.000000000 +0100
+++ /dev/null 2006-09-19 00:45:31.000000000 +0200
@@ -1,79 +0,0 @@
-#ifndef _VIDEO_S3BLIT_H
-#define _VIDEO_S3BLIT_H
-
-/* s3 commands */
-#define S3_BITBLT 0xc011
-#define S3_TWOPOINTLINE 0x2811
-#define S3_FILLEDRECT 0x40b1
-
-#define S3_FIFO_EMPTY 0x0400
-#define S3_HDW_BUSY 0x0200
-
-/* Enhanced register mapping (MMIO mode) */
-
-#define S3_READ_SEL 0xbee8 /* offset f */
-#define S3_MULT_MISC 0xbee8 /* offset e */
-#define S3_ERR_TERM 0x92e8
-#define S3_FRGD_COLOR 0xa6e8
-#define S3_BKGD_COLOR 0xa2e8
-#define S3_PIXEL_CNTL 0xbee8 /* offset a */
-#define S3_FRGD_MIX 0xbae8
-#define S3_BKGD_MIX 0xb6e8
-#define S3_CUR_Y 0x82e8
-#define S3_CUR_X 0x86e8
-#define S3_DESTY_AXSTP 0x8ae8
-#define S3_DESTX_DIASTP 0x8ee8
-#define S3_MIN_AXIS_PCNT 0xbee8 /* offset 0 */
-#define S3_MAJ_AXIS_PCNT 0x96e8
-#define S3_CMD 0x9ae8
-#define S3_GP_STAT 0x9ae8
-#define S3_ADVFUNC_CNTL 0x4ae8
-#define S3_WRT_MASK 0xaae8
-#define S3_RD_MASK 0xaee8
-
-/* Enhanced register mapping (Packed MMIO mode, write only) */
-#define S3_ALT_CURXY 0x8100
-#define S3_ALT_CURXY2 0x8104
-#define S3_ALT_STEP 0x8108
-#define S3_ALT_STEP2 0x810c
-#define S3_ALT_ERR 0x8110
-#define S3_ALT_CMD 0x8118
-#define S3_ALT_MIX 0x8134
-#define S3_ALT_PCNT 0x8148
-#define S3_ALT_PAT 0x8168
-
-/* Drawing modes */
-#define S3_NOTCUR 0x0000
-#define S3_LOGICALZERO 0x0001
-#define S3_LOGICALONE 0x0002
-#define S3_LEAVEASIS 0x0003
-#define S3_NOTNEW 0x0004
-#define S3_CURXORNEW 0x0005
-#define S3_NOT_CURXORNEW 0x0006
-#define S3_NEW 0x0007
-#define S3_NOTCURORNOTNEW 0x0008
-#define S3_CURORNOTNEW 0x0009
-#define S3_NOTCURORNEW 0x000a
-#define S3_CURORNEW 0x000b
-#define S3_CURANDNEW 0x000c
-#define S3_NOTCURANDNEW 0x000d
-#define S3_CURANDNOTNEW 0x000e
-#define S3_NOTCURANDNOTNEW 0x000f
-
-#define S3_CRTC_ADR 0x03d4
-#define S3_CRTC_DATA 0x03d5
-
-#define S3_REG_LOCK2 0x39
-#define S3_HGC_MODE 0x45
-
-#define S3_HWGC_ORGX_H 0x46
-#define S3_HWGC_ORGX_L 0x47
-#define S3_HWGC_ORGY_H 0x48
-#define S3_HWGC_ORGY_L 0x49
-#define S3_HWGC_DX 0x4e
-#define S3_HWGC_DY 0x4f
-
-
-#define S3_LAW_CTL 0x58
-
-#endif /* _VIDEO_S3BLIT_H */
--- linux-2.6.20-rc2-mm1/drivers/video/S3triofb.c 2006-12-28 11:57:35.000000000 +0100
+++ /dev/null 2006-09-19 00:45:31.000000000 +0200
@@ -1,790 +0,0 @@
-/*
- * linux/drivers/video/S3Triofb.c -- Open Firmware based frame buffer device
- *
- * Copyright (C) 1997 Peter De Schrijver
- *
- * This driver is partly based on the PowerMac console driver:
- *
- * Copyright (C) 1996 Paul Mackerras
- *
- * and on the Open Firmware based frame buffer device:
- *
- * Copyright (C) 1997 Geert Uytterhoeven
- *
- * 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.
- */
-
-/*
- Bugs : + OF dependencies should be removed.
- + This driver should be merged with the CyberVision driver. The
- CyberVision is a Zorro III implementation of the S3Trio64 chip.
-
-*/
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.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/selection.h>
-#include <asm/io.h>
-#include <asm/prom.h>
-#include <asm/pci-bridge.h>
-#include <linux/pci.h>
-
-#include <video/fbcon.h>
-#include <video/fbcon-cfb8.h>
-#include <video/s3blit.h>
-
-
-#define mem_in8(addr) in_8((void *)(addr))
-#define mem_in16(addr) in_le16((void *)(addr))
-#define mem_in32(addr) in_le32((void *)(addr))
-
-#define mem_out8(val, addr) out_8((void *)(addr), val)
-#define mem_out16(val, addr) out_le16((void *)(addr), val)
-#define mem_out32(val, addr) out_le32((void *)(addr), val)
-
-#define IO_OUT16VAL(v, r) (((v) << 8) | (r))
-
-static struct display disp;
-static struct fb_info fb_info;
-static struct { u_char red, green, blue, pad; } palette[256];
-static char s3trio_name[16] = "S3Trio ";
-static char *s3trio_base;
-
-static struct fb_fix_screeninfo fb_fix;
-static struct fb_var_screeninfo fb_var = { 0, };
-
-
- /*
- * Interface used by the world
- */
-
-static void __init s3triofb_of_init(struct device_node *dp);
-static int s3trio_get_fix(struct fb_fix_screeninfo *fix, int con,
- struct fb_info *info);
-static int s3trio_get_var(struct fb_var_screeninfo *var, int con,
- struct fb_info *info);
-static int s3trio_set_var(struct fb_var_screeninfo *var, int con,
- struct fb_info *info);
-static int s3trio_get_cmap(struct fb_cmap *cmap, int kspc, int con,
- struct fb_info *info);
-static int s3trio_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
- u_int transp, struct fb_info *info);
-static int s3trio_pan_display(struct fb_var_screeninfo *var, int con,
- struct fb_info *info);
-static void s3triofb_blank(int blank, struct fb_info *info);
-
- /*
- * Interface to the low level console driver
- */
-
-int s3triofb_init(void);
-static int s3triofbcon_switch(int con, struct fb_info *info);
-static int s3triofbcon_updatevar(int con, struct fb_info *info);
-
- /*
- * Text console acceleration
- */
-
-#ifdef FBCON_HAS_CFB8
-static struct display_switch fbcon_trio8;
-#endif
-
- /*
- * Accelerated Functions used by the low level console driver
- */
-
-static void Trio_WaitQueue(u_short fifo);
-static void Trio_WaitBlit(void);
-static void Trio_BitBLT(u_short curx, u_short cury, u_short destx,
- u_short desty, u_short width, u_short height,
- u_short mode);
-static void Trio_RectFill(u_short x, u_short y, u_short width, u_short height,
- u_short mode, u_short color);
-static void Trio_MoveCursor(u_short x, u_short y);
-
-
- /*
- * Internal routines
- */
-
-static int s3trio_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
- u_int *transp, struct fb_info *info);
-
-static struct fb_ops s3trio_ops = {
- .owner = THIS_MODULE,
- .fb_get_fix = s3trio_get_fix,
- .fb_get_var = s3trio_get_var,
- .fb_set_var = s3trio_set_var,
- .fb_get_cmap = s3trio_get_cmap,
- .fb_set_cmap = gen_set_cmap,
- .fb_setcolreg = s3trio_setcolreg,
- .fb_pan_display =s3trio_pan_display,
- .fb_blank = s3triofb_blank,
-};
-
- /*
- * Get the Fixed Part of the Display
- */
-
-static int s3trio_get_fix(struct fb_fix_screeninfo *fix, int con,
- struct fb_info *info)
-{
- memcpy(fix, &fb_fix, sizeof(fb_fix));
- return 0;
-}
-
-
- /*
- * Get the User Defined Part of the Display
- */
-
-static int s3trio_get_var(struct fb_var_screeninfo *var, int con,
- struct fb_info *info)
-{
- memcpy(var, &fb_var, sizeof(fb_var));
- return 0;
-}
-
-
- /*
- * Set the User Defined Part of the Display
- */
-
-static int s3trio_set_var(struct fb_var_screeninfo *var, int con,
- struct fb_info *info)
-{
- if (var->xres > fb_var.xres || var->yres > fb_var.yres ||
- var->bits_per_pixel > fb_var.bits_per_pixel )
- /* || var->nonstd || var->vmode != FB_VMODE_NONINTERLACED) */
- return -EINVAL;
- if (var->xres_virtual > fb_var.xres_virtual) {
- outw(IO_OUT16VAL((var->xres_virtual /8) & 0xff, 0x13), 0x3d4);
- outw(IO_OUT16VAL(((var->xres_virtual /8 ) & 0x300) >> 3, 0x51), 0x3d4);
- fb_var.xres_virtual = var->xres_virtual;
- fb_fix.line_length = var->xres_virtual;
- }
- fb_var.yres_virtual = var->yres_virtual;
- memcpy(var, &fb_var, sizeof(fb_var));
- return 0;
-}
-
-
- /*
- * Pan or Wrap the Display
- *
- * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
- */
-
-static int s3trio_pan_display(struct fb_var_screeninfo *var, int con,
- struct fb_info *info)
-{
- unsigned int base;
-
- if (var->xoffset > (var->xres_virtual - var->xres))
- return -EINVAL;
- if (var->yoffset > (var->yres_virtual - var->yres))
- return -EINVAL;
-
- fb_var.xoffset = var->xoffset;
- fb_var.yoffset = var->yoffset;
-
- base = var->yoffset * fb_fix.line_length + var->xoffset;
-
- outw(IO_OUT16VAL((base >> 8) & 0xff, 0x0c),0x03D4);
- outw(IO_OUT16VAL(base & 0xff, 0x0d),0x03D4);
- outw(IO_OUT16VAL((base >> 16) & 0xf, 0x69),0x03D4);
- return 0;
-}
-
-
- /*
- * Get the Colormap
- */
-
-static int s3trio_get_cmap(struct fb_cmap *cmap, int kspc, int con,
- struct fb_info *info)
-{
- if (con == info->currcon) /* current console? */
- return fb_get_cmap(cmap, kspc, s3trio_getcolreg, info);
- else if (fb_display[con].cmap.len) /* non default colormap? */
- fb_copy_cmap(&fb_display[con].cmap, cmap, kspc ? 0 : 2);
- else
- fb_copy_cmap(fb_default_cmap(1 << fb_display[con].var.bits_per_pixel),
- cmap, kspc ? 0 : 2);
- return 0;
-}
-
-int __init s3triofb_init(void)
-{
- struct device_node *dp;
-
- dp = find_devices("S3Trio");
- if (dp != 0)
- s3triofb_of_init(dp);
- return 0;
-}
-
-void __init s3trio_resetaccel(void){
-
-
-#define EC01_ENH_ENB 0x0005
-#define EC01_LAW_ENB 0x0010
-#define EC01_MMIO_ENB 0x0020
-
-#define EC00_RESET 0x8000
-#define EC00_ENABLE 0x4000
-#define MF_MULT_MISC 0xE000
-#define SRC_FOREGROUND 0x0020
-#define SRC_BACKGROUND 0x0000
-#define MIX_SRC 0x0007
-#define MF_T_CLIP 0x1000
-#define MF_L_CLIP 0x2000
-#define MF_B_CLIP 0x3000
-#define MF_R_CLIP 0x4000
-#define MF_PIX_CONTROL 0xA000
-#define MFA_SRC_FOREGR_MIX 0x0000
-#define MF_PIX_CONTROL 0xA000
-
- outw(EC00_RESET, 0x42e8);
- inw( 0x42e8);
- outw(EC00_ENABLE, 0x42e8);
- inw( 0x42e8);
- outw(EC01_ENH_ENB | EC01_LAW_ENB,
- 0x4ae8);
- outw(MF_MULT_MISC, 0xbee8); /* 16 bit I/O registers */
-
- /* Now set some basic accelerator registers */
- Trio_WaitQueue(0x0400);
- outw(SRC_FOREGROUND | MIX_SRC, 0xbae8);
- outw(SRC_BACKGROUND | MIX_SRC, 0xb6e8);/* direct color*/
- outw(MF_T_CLIP | 0, 0xbee8 ); /* clip virtual area */
- outw(MF_L_CLIP | 0, 0xbee8 );
- outw(MF_R_CLIP | (640 - 1), 0xbee8);
- outw(MF_B_CLIP | (480 - 1), 0xbee8);
- Trio_WaitQueue(0x0400);
- outw(0xffff, 0xaae8); /* Enable all planes */
- outw(0xffff, 0xaae8); /* Enable all planes */
- outw( MF_PIX_CONTROL | MFA_SRC_FOREGR_MIX, 0xbee8);
-}
-
-int __init s3trio_init(struct device_node *dp){
-
- u_char bus, dev;
- unsigned int t32;
- unsigned short cmd;
-
- pci_device_loc(dp,&bus,&dev);
- pcibios_read_config_dword(bus, dev, PCI_VENDOR_ID, &t32);
- if(t32 == (PCI_DEVICE_ID_S3_TRIO << 16) + PCI_VENDOR_ID_S3) {
- pcibios_read_config_dword(bus, dev, PCI_BASE_ADDRESS_0, &t32);
- pcibios_read_config_dword(bus, dev, PCI_BASE_ADDRESS_1, &t32);
- pcibios_read_config_word(bus, dev, PCI_COMMAND,&cmd);
-
- pcibios_write_config_word(bus, dev, PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
-
- pcibios_write_config_dword(bus, dev, PCI_BASE_ADDRESS_0,0xffffffff);
- pcibios_read_config_dword(bus, dev, PCI_BASE_ADDRESS_0, &t32);
-
-/* This is a gross hack as OF only maps enough memory for the framebuffer and
- we want to use MMIO too. We should find out which chunk of address space
- we can use here */
- pcibios_write_config_dword(bus,dev,PCI_BASE_ADDRESS_0,0xc6000000);
-
- /* unlock s3 */
-
- outb(0x01, 0x3C3);
-
- outb(inb(0x03CC) | 1, 0x3c2);
-
- outw(IO_OUT16VAL(0x48, 0x38),0x03D4);
- outw(IO_OUT16VAL(0xA0, 0x39),0x03D4);
- outb(0x33,0x3d4);
- outw(IO_OUT16VAL((inb(0x3d5) & ~(0x2 | 0x10 | 0x40)) |
- 0x20, 0x33), 0x3d4);
-
- outw(IO_OUT16VAL(0x6, 0x8), 0x3c4);
-
- /* switch to MMIO only mode */
-
- outb(0x58, 0x3d4);
- outw(IO_OUT16VAL(inb(0x3d5) | 3 | 0x10, 0x58), 0x3d4);
- outw(IO_OUT16VAL(8, 0x53), 0x3d4);
-
- /* switch off I/O accesses */
-
-#if 0
- pcibios_write_config_word(bus, dev, PCI_COMMAND,
- PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
-#endif
- return 1;
- }
-
- return 0;
-}
-
-
- /*
- * Initialisation
- * We heavily rely on OF for the moment. This needs fixing.
- */
-
-static void __init s3triofb_of_init(struct device_node *dp)
-{
- int i, *pp, len;
- unsigned long address, size;
- u_long *CursorBase;
-
- strncat(s3trio_name, dp->name, sizeof(s3trio_name));
- s3trio_name[sizeof(s3trio_name)-1] = '\0';
- strcpy(fb_fix.id, s3trio_name);
-
- if((pp = get_property(dp, "vendor-id", &len)) != NULL
- && *pp!=PCI_VENDOR_ID_S3) {
- printk("%s: can't find S3 Trio board\n", dp->full_name);
- return;
- }
-
- if((pp = get_property(dp, "device-id", &len)) != NULL
- && *pp!=PCI_DEVICE_ID_S3_TRIO) {
- printk("%s: can't find S3 Trio board\n", dp->full_name);
- return;
- }
-
- if ((pp = get_property(dp, "depth", &len)) != NULL
- && len == sizeof(int) && *pp != 8) {
- printk("%s: can't use depth = %d\n", dp->full_name, *pp);
- return;
- }
- if ((pp = get_property(dp, "width", &len)) != NULL
- && len == sizeof(int))
- fb_var.xres = fb_var.xres_virtual = *pp;
- if ((pp = get_property(dp, "height", &len)) != NULL
- && len == sizeof(int))
- fb_var.yres = fb_var.yres_virtual = *pp;
- if ((pp = get_property(dp, "linebytes", &len)) != NULL
- && len == sizeof(int))
- fb_fix.line_length = *pp;
- else
- fb_fix.line_length = fb_var.xres_virtual;
- fb_fix.smem_len = fb_fix.line_length*fb_var.yres;
-
- address = 0xc6000000;
- size = 64*1024*1024;
- if (!request_mem_region(address, size, "S3triofb"))
- return;
-
- s3trio_init(dp);
- s3trio_base = ioremap(address, size);
- fb_fix.smem_start = address;
- fb_fix.type = FB_TYPE_PACKED_PIXELS;
- fb_fix.type_aux = 0;
- fb_fix.accel = FB_ACCEL_S3_TRIO64;
- fb_fix.mmio_start = address+0x1000000;
- fb_fix.mmio_len = 0x1000000;
-
- fb_fix.xpanstep = 1;
- fb_fix.ypanstep = 1;
-
- s3trio_resetaccel();
-
- mem_out8(0x30, s3trio_base+0x1008000 + 0x03D4);
- mem_out8(0x2d, s3trio_base+0x1008000 + 0x03D4);
- mem_out8(0x2e, s3trio_base+0x1008000 + 0x03D4);
-
- mem_out8(0x50, s3trio_base+0x1008000 + 0x03D4);
-
- /* disable HW cursor */
-
- mem_out8(0x39, s3trio_base+0x1008000 + 0x03D4);
- mem_out8(0xa0, s3trio_base+0x1008000 + 0x03D5);
-
- mem_out8(0x45, s3trio_base+0x1008000 + 0x03D4);
- mem_out8(0, s3trio_base+0x1008000 + 0x03D5);
-
- mem_out8(0x4e, s3trio_base+0x1008000 + 0x03D4);
- mem_out8(0, s3trio_base+0x1008000 + 0x03D5);
-
- mem_out8(0x4f, s3trio_base+0x1008000 + 0x03D4);
- mem_out8(0, s3trio_base+0x1008000 + 0x03D5);
-
- /* init HW cursor */
-
- CursorBase = (u_long *)(s3trio_base + 2*1024*1024 - 0x400);
- for (i = 0; i < 8; i++) {
- *(CursorBase +(i*4)) = 0xffffff00;
- *(CursorBase+1+(i*4)) = 0xffff0000;
- *(CursorBase+2+(i*4)) = 0xffff0000;
- *(CursorBase+3+(i*4)) = 0xffff0000;
- }
- for (i = 8; i < 64; i++) {
- *(CursorBase +(i*4)) = 0xffff0000;
- *(CursorBase+1+(i*4)) = 0xffff0000;
- *(CursorBase+2+(i*4)) = 0xffff0000;
- *(CursorBase+3+(i*4)) = 0xffff0000;
- }
-
-
- mem_out8(0x4c, s3trio_base+0x1008000 + 0x03D4);
- mem_out8(((2*1024 - 1)&0xf00)>>8, s3trio_base+0x1008000 + 0x03D5);
-
- mem_out8(0x4d, s3trio_base+0x1008000 + 0x03D4);
- mem_out8((2*1024 - 1) & 0xff, s3trio_base+0x1008000 + 0x03D5);
-
- mem_out8(0x45, s3trio_base+0x1008000 + 0x03D4);
- mem_in8(s3trio_base+0x1008000 + 0x03D4);
-
- mem_out8(0x4a, s3trio_base+0x1008000 + 0x03D4);
- mem_out8(0x80, s3trio_base+0x1008000 + 0x03D5);
- mem_out8(0x80, s3trio_base+0x1008000 + 0x03D5);
- mem_out8(0x80, s3trio_base+0x1008000 + 0x03D5);
-
- mem_out8(0x4b, s3trio_base+0x1008000 + 0x03D4);
- mem_out8(0x00, s3trio_base+0x1008000 + 0x03D5);
- mem_out8(0x00, s3trio_base+0x1008000 + 0x03D5);
- mem_out8(0x00, s3trio_base+0x1008000 + 0x03D5);
-
- mem_out8(0x45, s3trio_base+0x1008000 + 0x03D4);
- mem_out8(0, s3trio_base+0x1008000 + 0x03D5);
-
- /* setup default color table */
-
- for(i = 0; i < 16; i++) {
- int j = color_table[i];
- palette[i].red=default_red[j];
- palette[i].green=default_grn[j];
- palette[i].blue=default_blu[j];
- }
-
- s3trio_setcolreg(255, 56, 100, 160, 0, NULL /* not used */);
- s3trio_setcolreg(254, 0, 0, 0, 0, NULL /* not used */);
- memset((char *)s3trio_base, 0, 640*480);
-
-#if 0
- Trio_RectFill(0, 0, 90, 90, 7, 1);
-#endif
-
- fb_fix.visual = FB_VISUAL_PSEUDOCOLOR ;
- fb_var.xoffset = fb_var.yoffset = 0;
- fb_var.bits_per_pixel = 8;
- fb_var.grayscale = 0;
- fb_var.red.offset = fb_var.green.offset = fb_var.blue.offset = 0;
- fb_var.red.length = fb_var.green.length = fb_var.blue.length = 8;
- fb_var.red.msb_right = fb_var.green.msb_right = fb_var.blue.msb_right = 0;
- fb_var.transp.offset = fb_var.transp.length = fb_var.transp.msb_right = 0;
- fb_var.nonstd = 0;
- fb_var.activate = 0;
- fb_var.height = fb_var.width = -1;
- fb_var.accel_flags = FB_ACCELF_TEXT;
-#warning FIXME: always obey fb_var.accel_flags
- fb_var.pixclock = 1;
- fb_var.left_margin = fb_var.right_margin = 0;
- fb_var.upper_margin = fb_var.lower_margin = 0;
- fb_var.hsync_len = fb_var.vsync_len = 0;
- fb_var.sync = 0;
- fb_var.vmode = FB_VMODE_NONINTERLACED;
-
- disp.var = fb_var;
- disp.cmap.start = 0;
- disp.cmap.len = 0;
- disp.cmap.red = disp.cmap.green = disp.cmap.blue = disp.cmap.transp = NULL;
- disp.visual = fb_fix.visual;
- disp.type = fb_fix.type;
- disp.type_aux = fb_fix.type_aux;
- disp.ypanstep = 0;
- disp.ywrapstep = 0;
- disp.line_length = fb_fix.line_length;
- disp.can_soft_blank = 1;
- disp.inverse = 0;
-#ifdef FBCON_HAS_CFB8
- if (fb_var.accel_flags & FB_ACCELF_TEXT)
- disp.dispsw = &fbcon_trio8;
- else
- disp.dispsw = &fbcon_cfb8;
-#else
- disp.dispsw = &fbcon_dummy;
-#endif
- disp.scrollmode = fb_var.accel_flags & FB_ACCELF_TEXT ? 0 : SCROLL_YREDRAW;
-
- strcpy(fb_info.modename, "Trio64 ");
- strncat(fb_info.modename, dp->full_name, sizeof(fb_info.modename));
- fb_info.currcon = -1;
- fb_info.fbops = &s3trio_ops;
- fb_info.screen_base = s3trio_base;
-#if 0
- fb_info.fbvar_num = 1;
- fb_info.fbvar = &fb_var;
-#endif
- fb_info.disp = &disp;
- fb_info.fontname[0] = '\0';
- fb_info.changevar = NULL;
- fb_info.switch_con = &s3triofbcon_switch;
- fb_info.updatevar = &s3triofbcon_updatevar;
-#if 0
- fb_info.setcmap = &s3triofbcon_setcmap;
-#endif
-
- fb_info.flags = FBINFO_FLAG_DEFAULT;
- if (register_framebuffer(&fb_info) < 0) {
- iounmap(fb_info.screen_base);
- fb_info.screen_base = NULL;
- return;
- }
-
- printk("fb%d: S3 Trio frame buffer device on %s\n",
- fb_info.node, dp->full_name);
-}
-
-
-static int s3triofbcon_switch(int con, struct fb_info *info)
-{
- /* Do we have to save the colormap? */
- if (fb_display[info->currcon].cmap.len)
- fb_get_cmap(&fb_display[info->currcon].cmap, 1, s3trio_getcolreg, info);
-
- info->currcon = con;
- /* Install new colormap */
- do_install_cmap(con,info);
- return 0;
-}
-
- /*
- * Update the `var' structure (called by fbcon.c)
- */
-
-static int s3triofbcon_updatevar(int con, struct fb_info *info)
-{
- /* Nothing */
- return 0;
-}
-
- /*
- * Blank the display.
- */
-
-static int s3triofb_blank(int blank, struct fb_info *info)
-{
- unsigned char x;
-
- mem_out8(0x1, s3trio_base+0x1008000 + 0x03c4);
- x = mem_in8(s3trio_base+0x1008000 + 0x03c5);
- mem_out8((x & (~0x20)) | (blank << 5), s3trio_base+0x1008000 + 0x03c5);
- return 0;
-}
-
- /*
- * Read a single color register and split it into
- * colors/transparent. Return != 0 for invalid regno.
- */
-
-static int s3trio_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;
-}
-
-
- /*
- * Set a single color register. Return != 0 for invalid regno.
- */
-
-static int s3trio_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;
-
- mem_out8(regno,s3trio_base+0x1008000 + 0x3c8);
- mem_out8((red & 0xff) >> 2,s3trio_base+0x1008000 + 0x3c9);
- mem_out8((green & 0xff) >> 2,s3trio_base+0x1008000 + 0x3c9);
- mem_out8((blue & 0xff) >> 2,s3trio_base+0x1008000 + 0x3c9);
-
- return 0;
-}
-
-static void Trio_WaitQueue(u_short fifo) {
-
- u_short status;
-
- do
- {
- status = mem_in16(s3trio_base + 0x1000000 + 0x9AE8);
- } while (!(status & fifo));
-
-}
-
-static void Trio_WaitBlit(void) {
-
- u_short status;
-
- do
- {
- status = mem_in16(s3trio_base + 0x1000000 + 0x9AE8);
- } while (status & 0x200);
-
-}
-
-static void Trio_BitBLT(u_short curx, u_short cury, u_short destx,
- u_short desty, u_short width, u_short height,
- u_short mode) {
-
- u_short blitcmd = 0xc011;
-
- /* Set drawing direction */
- /* -Y, X maj, -X (default) */
-
- if (curx > destx)
- blitcmd |= 0x0020; /* Drawing direction +X */
- else {
- curx += (width - 1);
- destx += (width - 1);
- }
-
- if (cury > desty)
- blitcmd |= 0x0080; /* Drawing direction +Y */
- else {
- cury += (height - 1);
- desty += (height - 1);
- }
-
- Trio_WaitQueue(0x0400);
-
- outw(0xa000, 0xBEE8);
- outw(0x60 | mode, 0xBAE8);
-
- outw(curx, 0x86E8);
- outw(cury, 0x82E8);
-
- outw(destx, 0x8EE8);
- outw(desty, 0x8AE8);
-
- outw(height - 1, 0xBEE8);
- outw(width - 1, 0x96E8);
-
- outw(blitcmd, 0x9AE8);
-
-}
-
-static void Trio_RectFill(u_short x, u_short y, u_short width, u_short height,
- u_short mode, u_short color) {
-
- u_short blitcmd = 0x40b1;
-
- Trio_WaitQueue(0x0400);
-
- outw(0xa000, 0xBEE8);
- outw((0x20 | mode), 0xBAE8);
- outw(0xe000, 0xBEE8);
- outw(color, 0xA6E8);
- outw(x, 0x86E8);
- outw(y, 0x82E8);
- outw((height - 1), 0xBEE8);
- outw((width - 1), 0x96E8);
- outw(blitcmd, 0x9AE8);
-
-}
-
-
-static void Trio_MoveCursor(u_short x, u_short y) {
-
- mem_out8(0x39, s3trio_base + 0x1008000 + 0x3d4);
- mem_out8(0xa0, s3trio_base + 0x1008000 + 0x3d5);
-
- mem_out8(0x46, s3trio_base + 0x1008000 + 0x3d4);
- mem_out8((x & 0x0700) >> 8, s3trio_base + 0x1008000 + 0x3d5);
- mem_out8(0x47, s3trio_base + 0x1008000 + 0x3d4);
- mem_out8(x & 0x00ff, s3trio_base + 0x1008000 + 0x3d5);
-
- mem_out8(0x48, s3trio_base + 0x1008000 + 0x3d4);
- mem_out8((y & 0x0700) >> 8, s3trio_base + 0x1008000 + 0x3d5);
- mem_out8(0x49, s3trio_base + 0x1008000 + 0x3d4);
- mem_out8(y & 0x00ff, s3trio_base + 0x1008000 + 0x3d5);
-
-}
-
-
- /*
- * Text console acceleration
- */
-
-#ifdef FBCON_HAS_CFB8
-static void fbcon_trio8_bmove(struct display *p, int sy, int sx, int dy,
- int dx, int height, int width)
-{
- sx *= 8; dx *= 8; width *= 8;
- Trio_BitBLT((u_short)sx, (u_short)(sy*fontheight(p)), (u_short)dx,
- (u_short)(dy*fontheight(p)), (u_short)width,
- (u_short)(height*fontheight(p)), (u_short)S3_NEW);
-}
-
-static void fbcon_trio8_clear(struct vc_data *conp, struct display *p, int sy,
- int sx, int height, int width)
-{
- unsigned char bg;
-
- sx *= 8; width *= 8;
- bg = attr_bgcol_ec(p,conp);
- Trio_RectFill((u_short)sx,
- (u_short)(sy*fontheight(p)),
- (u_short)width,
- (u_short)(height*fontheight(p)),
- (u_short)S3_NEW,
- (u_short)bg);
-}
-
-static void fbcon_trio8_putc(struct vc_data *conp, struct display *p, int c,
- int yy, int xx)
-{
- Trio_WaitBlit();
- fbcon_cfb8_putc(conp, p, c, yy, xx);
-}
-
-static void fbcon_trio8_putcs(struct vc_data *conp, struct display *p,
- const unsigned short *s, int count, int yy, int xx)
-{
- Trio_WaitBlit();
- fbcon_cfb8_putcs(conp, p, s, count, yy, xx);
-}
-
-static void fbcon_trio8_revc(struct display *p, int xx, int yy)
-{
- Trio_WaitBlit();
- fbcon_cfb8_revc(p, xx, yy);
-}
-
-static struct display_switch fbcon_trio8 = {
- .setup = fbcon_cfb8_setup,
- .bmove = fbcon_trio8_bmove,
- .clear = fbcon_trio8_clear,
- .putc = fbcon_trio8_putc,
- .putcs = fbcon_trio8_putcs,
- .revc = fbcon_trio8_revc,
- .clear_margins = fbcon_cfb8_clear_margins,
- .fontwidthmask = FONTWIDTH(8)
-};
-#endif
-
-MODULE_LICENSE("GPL");

-
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