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![Ralf Baechle](/assets/img/avatar_default.png)
Get it working again. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
514 lines
12 KiB
C
514 lines
12 KiB
C
/*
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* linux/drivers/video/pmag-aa-fb.c
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* Copyright 2002 Karsten Merker <merker@debian.org>
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*
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* PMAG-AA TurboChannel framebuffer card support ... derived from
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* pmag-ba-fb.c, which is Copyright (C) 1999, 2000, 2001 by
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* Michael Engel <engel@unix-ag.org>, Karsten Merker <merker@debian.org>
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* and Harald Koerfgen <hkoerfg@web.de>, which itself is derived from
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* "HP300 Topcat framebuffer support (derived from macfb of all things)
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* Phil Blundell <philb@gnu.org> 1998"
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file COPYING in the main directory of this
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* archive for more details.
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*
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* 2002-09-28 Karsten Merker <merker@linuxtag.org>
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* Version 0.01: First try to get a PMAG-AA running.
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*
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* 2003-02-24 Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de>
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* Version 0.02: Major code cleanup.
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*
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* 2003-09-21 Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de>
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* Hardware cursor support.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/mm.h>
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#include <linux/tty.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/fb.h>
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#include <linux/console.h>
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#include <asm/bootinfo.h>
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#include <asm/dec/machtype.h>
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#include <asm/dec/tc.h>
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#include <video/fbcon.h>
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#include <video/fbcon-cfb8.h>
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#include "bt455.h"
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#include "bt431.h"
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/* Version information */
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#define DRIVER_VERSION "0.02"
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#define DRIVER_AUTHOR "Karsten Merker <merker@linuxtag.org>"
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#define DRIVER_DESCRIPTION "PMAG-AA Framebuffer Driver"
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/* Prototypes */
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static int aafb_set_var(struct fb_var_screeninfo *var, int con,
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struct fb_info *info);
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/*
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* Bt455 RAM DAC register base offset (rel. to TC slot base address).
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*/
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#define PMAG_AA_BT455_OFFSET 0x100000
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/*
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* Bt431 cursor generator offset (rel. to TC slot base address).
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*/
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#define PMAG_AA_BT431_OFFSET 0x180000
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/*
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* Begin of PMAG-AA framebuffer memory relative to TC slot address,
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* resolution is 1280x1024x1 (8 bits deep, but only LSB is used).
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*/
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#define PMAG_AA_ONBOARD_FBMEM_OFFSET 0x200000
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struct aafb_cursor {
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struct timer_list timer;
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int enable;
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int on;
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int vbl_cnt;
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int blink_rate;
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u16 x, y, width, height;
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};
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#define CURSOR_TIMER_FREQ (HZ / 50)
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#define CURSOR_BLINK_RATE (20)
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#define CURSOR_DRAW_DELAY (2)
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struct aafb_info {
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struct fb_info info;
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struct display disp;
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struct aafb_cursor cursor;
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struct bt455_regs *bt455;
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struct bt431_regs *bt431;
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unsigned long fb_start;
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unsigned long fb_size;
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unsigned long fb_line_length;
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};
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/*
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* Max 3 TURBOchannel slots -> max 3 PMAG-AA.
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*/
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static struct aafb_info my_fb_info[3];
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static struct aafb_par {
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} current_par;
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static int currcon = -1;
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static void aafb_set_cursor(struct aafb_info *info, int on)
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{
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struct aafb_cursor *c = &info->cursor;
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if (on) {
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bt431_position_cursor(info->bt431, c->x, c->y);
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bt431_enable_cursor(info->bt431);
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} else
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bt431_erase_cursor(info->bt431);
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}
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static void aafbcon_cursor(struct display *disp, int mode, int x, int y)
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{
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struct aafb_info *info = (struct aafb_info *)disp->fb_info;
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struct aafb_cursor *c = &info->cursor;
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x *= fontwidth(disp);
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y *= fontheight(disp);
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if (c->x == x && c->y == y && (mode == CM_ERASE) == !c->enable)
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return;
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c->enable = 0;
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if (c->on)
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aafb_set_cursor(info, 0);
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c->x = x - disp->var.xoffset;
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c->y = y - disp->var.yoffset;
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switch (mode) {
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case CM_ERASE:
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c->on = 0;
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break;
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case CM_DRAW:
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case CM_MOVE:
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if (c->on)
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aafb_set_cursor(info, c->on);
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else
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c->vbl_cnt = CURSOR_DRAW_DELAY;
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c->enable = 1;
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break;
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}
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}
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static int aafbcon_set_font(struct display *disp, int width, int height)
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{
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struct aafb_info *info = (struct aafb_info *)disp->fb_info;
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struct aafb_cursor *c = &info->cursor;
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u8 fgc = ~attr_bgcol_ec(disp, disp->conp);
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if (width > 64 || height > 64 || width < 0 || height < 0)
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return -EINVAL;
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c->height = height;
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c->width = width;
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bt431_set_font(info->bt431, fgc, width, height);
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return 1;
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}
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static void aafb_cursor_timer_handler(unsigned long data)
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{
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struct aafb_info *info = (struct aafb_info *)data;
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struct aafb_cursor *c = &info->cursor;
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if (!c->enable)
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goto out;
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if (c->vbl_cnt && --c->vbl_cnt == 0) {
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c->on ^= 1;
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aafb_set_cursor(info, c->on);
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c->vbl_cnt = c->blink_rate;
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}
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out:
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c->timer.expires = jiffies + CURSOR_TIMER_FREQ;
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add_timer(&c->timer);
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}
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static void __init aafb_cursor_init(struct aafb_info *info)
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{
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struct aafb_cursor *c = &info->cursor;
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c->enable = 1;
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c->on = 1;
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c->x = c->y = 0;
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c->width = c->height = 0;
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c->vbl_cnt = CURSOR_DRAW_DELAY;
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c->blink_rate = CURSOR_BLINK_RATE;
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init_timer(&c->timer);
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c->timer.data = (unsigned long)info;
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c->timer.function = aafb_cursor_timer_handler;
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mod_timer(&c->timer, jiffies + CURSOR_TIMER_FREQ);
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}
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static void __exit aafb_cursor_exit(struct aafb_info *info)
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{
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struct aafb_cursor *c = &info->cursor;
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del_timer_sync(&c->timer);
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}
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static struct display_switch aafb_switch8 = {
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.setup = fbcon_cfb8_setup,
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.bmove = fbcon_cfb8_bmove,
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.clear = fbcon_cfb8_clear,
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.putc = fbcon_cfb8_putc,
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.putcs = fbcon_cfb8_putcs,
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.revc = fbcon_cfb8_revc,
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.cursor = aafbcon_cursor,
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.set_font = aafbcon_set_font,
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.clear_margins = fbcon_cfb8_clear_margins,
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.fontwidthmask = FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
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};
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static void aafb_get_par(struct aafb_par *par)
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{
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*par = current_par;
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}
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static int aafb_get_fix(struct fb_fix_screeninfo *fix, int con,
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struct fb_info *info)
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{
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struct aafb_info *ip = (struct aafb_info *)info;
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memset(fix, 0, sizeof(struct fb_fix_screeninfo));
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strcpy(fix->id, "PMAG-AA");
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fix->smem_start = ip->fb_start;
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fix->smem_len = ip->fb_size;
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fix->type = FB_TYPE_PACKED_PIXELS;
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fix->ypanstep = 1;
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fix->ywrapstep = 1;
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fix->visual = FB_VISUAL_MONO10;
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fix->line_length = 1280;
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fix->accel = FB_ACCEL_NONE;
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return 0;
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}
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static void aafb_set_disp(struct display *disp, int con,
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struct aafb_info *info)
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{
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struct fb_fix_screeninfo fix;
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disp->fb_info = &info->info;
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aafb_set_var(&disp->var, con, &info->info);
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if (disp->conp && disp->conp->vc_sw && disp->conp->vc_sw->con_cursor)
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disp->conp->vc_sw->con_cursor(disp->conp, CM_ERASE);
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disp->dispsw = &aafb_switch8;
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disp->dispsw_data = 0;
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aafb_get_fix(&fix, con, &info->info);
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disp->screen_base = (u8 *) fix.smem_start;
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disp->visual = fix.visual;
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disp->type = fix.type;
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disp->type_aux = fix.type_aux;
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disp->ypanstep = fix.ypanstep;
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disp->ywrapstep = fix.ywrapstep;
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disp->line_length = fix.line_length;
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disp->next_line = 2048;
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disp->can_soft_blank = 1;
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disp->inverse = 0;
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disp->scrollmode = SCROLL_YREDRAW;
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aafbcon_set_font(disp, fontwidth(disp), fontheight(disp));
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}
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static int aafb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
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struct fb_info *info)
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{
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static u16 color[2] = {0x0000, 0x000f};
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static struct fb_cmap aafb_cmap = {0, 2, color, color, color, NULL};
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fb_copy_cmap(&aafb_cmap, cmap, kspc ? 0 : 2);
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return 0;
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}
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static int aafb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
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struct fb_info *info)
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{
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u16 color[2] = {0x0000, 0x000f};
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if (cmap->start == 0
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&& cmap->len == 2
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&& memcmp(cmap->red, color, sizeof(color)) == 0
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&& memcmp(cmap->green, color, sizeof(color)) == 0
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&& memcmp(cmap->blue, color, sizeof(color)) == 0
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&& cmap->transp == NULL)
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return 0;
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else
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return -EINVAL;
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}
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static int aafb_ioctl(struct inode *inode, struct file *file, u32 cmd,
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unsigned long arg, int con, struct fb_info *info)
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{
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/* TODO: Not yet implemented */
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return -ENOIOCTLCMD;
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}
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static int aafb_switch(int con, struct fb_info *info)
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{
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struct aafb_info *ip = (struct aafb_info *)info;
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struct display *old = (currcon < 0) ? &ip->disp : (fb_display + currcon);
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struct display *new = (con < 0) ? &ip->disp : (fb_display + con);
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if (old->conp && old->conp->vc_sw && old->conp->vc_sw->con_cursor)
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old->conp->vc_sw->con_cursor(old->conp, CM_ERASE);
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/* Set the current console. */
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currcon = con;
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aafb_set_disp(new, con, ip);
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return 0;
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}
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static void aafb_encode_var(struct fb_var_screeninfo *var,
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struct aafb_par *par)
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{
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var->xres = 1280;
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var->yres = 1024;
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var->xres_virtual = 2048;
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var->yres_virtual = 1024;
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var->xoffset = 0;
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var->yoffset = 0;
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var->bits_per_pixel = 8;
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var->grayscale = 1;
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var->red.offset = 0;
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var->red.length = 0;
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var->red.msb_right = 0;
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var->green.offset = 0;
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var->green.length = 1;
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var->green.msb_right = 0;
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var->blue.offset = 0;
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var->blue.length = 0;
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var->blue.msb_right = 0;
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var->transp.offset = 0;
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var->transp.length = 0;
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var->transp.msb_right = 0;
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var->nonstd = 0;
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var->activate &= ~FB_ACTIVATE_MASK & FB_ACTIVATE_NOW;
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var->accel_flags = 0;
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var->sync = FB_SYNC_ON_GREEN;
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var->vmode &= ~FB_VMODE_MASK & FB_VMODE_NONINTERLACED;
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}
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static int aafb_get_var(struct fb_var_screeninfo *var, int con,
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struct fb_info *info)
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{
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if (con < 0) {
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struct aafb_par par;
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memset(var, 0, sizeof(struct fb_var_screeninfo));
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aafb_get_par(&par);
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aafb_encode_var(var, &par);
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} else
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*var = info->var;
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return 0;
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}
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static int aafb_set_var(struct fb_var_screeninfo *var, int con,
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struct fb_info *info)
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{
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struct aafb_par par;
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aafb_get_par(&par);
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aafb_encode_var(var, &par);
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info->var = *var;
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return 0;
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}
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static int aafb_update_var(int con, struct fb_info *info)
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{
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struct aafb_info *ip = (struct aafb_info *)info;
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struct display *disp = (con < 0) ? &ip->disp : (fb_display + con);
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if (con == currcon)
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aafbcon_cursor(disp, CM_ERASE, ip->cursor.x, ip->cursor.y);
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return 0;
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}
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/* 0 unblanks, any other blanks. */
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static void aafb_blank(int blank, struct fb_info *info)
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{
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struct aafb_info *ip = (struct aafb_info *)info;
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u8 val = blank ? 0x00 : 0x0f;
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bt455_write_cmap_entry(ip->bt455, 1, val, val, val);
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aafbcon_cursor(&ip->disp, CM_ERASE, ip->cursor.x, ip->cursor.y);
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}
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static struct fb_ops aafb_ops = {
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.owner = THIS_MODULE,
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.fb_get_fix = aafb_get_fix,
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.fb_get_var = aafb_get_var,
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.fb_set_var = aafb_set_var,
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.fb_get_cmap = aafb_get_cmap,
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.fb_set_cmap = aafb_set_cmap,
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.fb_ioctl = aafb_ioctl
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};
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static int __init init_one(int slot)
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{
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unsigned long base_addr = CKSEG1ADDR(get_tc_base_addr(slot));
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struct aafb_info *ip = &my_fb_info[slot];
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memset(ip, 0, sizeof(struct aafb_info));
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/*
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* Framebuffer display memory base address and friends.
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*/
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ip->bt455 = (struct bt455_regs *) (base_addr + PMAG_AA_BT455_OFFSET);
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ip->bt431 = (struct bt431_regs *) (base_addr + PMAG_AA_BT431_OFFSET);
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ip->fb_start = base_addr + PMAG_AA_ONBOARD_FBMEM_OFFSET;
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ip->fb_size = 2048 * 1024; /* fb_fix_screeninfo.smem_length
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seems to be physical */
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ip->fb_line_length = 2048;
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/*
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* Let there be consoles..
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*/
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strcpy(ip->info.modename, "PMAG-AA");
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ip->info.node = -1;
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ip->info.flags = FBINFO_FLAG_DEFAULT;
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ip->info.fbops = &aafb_ops;
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ip->info.disp = &ip->disp;
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ip->info.changevar = NULL;
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ip->info.switch_con = &aafb_switch;
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ip->info.updatevar = &aafb_update_var;
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ip->info.blank = &aafb_blank;
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aafb_set_disp(&ip->disp, currcon, ip);
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/*
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* Configure the RAM DACs.
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*/
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bt455_erase_cursor(ip->bt455);
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/* Init colormap. */
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bt455_write_cmap_entry(ip->bt455, 0, 0x00, 0x00, 0x00);
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bt455_write_cmap_entry(ip->bt455, 1, 0x0f, 0x0f, 0x0f);
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/* Init hardware cursor. */
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bt431_init_cursor(ip->bt431);
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aafb_cursor_init(ip);
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/* Clear the screen. */
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memset ((void *)ip->fb_start, 0, ip->fb_size);
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if (register_framebuffer(&ip->info) < 0)
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return -EINVAL;
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printk(KERN_INFO "fb%d: %s frame buffer in TC slot %d\n",
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GET_FB_IDX(ip->info.node), ip->info.modename, slot);
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return 0;
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}
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static int __exit exit_one(int slot)
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{
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struct aafb_info *ip = &my_fb_info[slot];
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if (unregister_framebuffer(&ip->info) < 0)
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return -EINVAL;
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return 0;
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}
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/*
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* Initialise the framebuffer.
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*/
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int __init pmagaafb_init(void)
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{
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int sid;
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int found = 0;
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while ((sid = search_tc_card("PMAG-AA")) >= 0) {
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|
found = 1;
|
|
claim_tc_card(sid);
|
|
init_one(sid);
|
|
}
|
|
|
|
return found ? 0 : -ENXIO;
|
|
}
|
|
|
|
static void __exit pmagaafb_exit(void)
|
|
{
|
|
int sid;
|
|
|
|
while ((sid = search_tc_card("PMAG-AA")) >= 0) {
|
|
exit_one(sid);
|
|
release_tc_card(sid);
|
|
}
|
|
}
|
|
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_DESCRIPTION(DRIVER_DESCRIPTION);
|
|
MODULE_LICENSE("GPL");
|
|
#ifdef MODULE
|
|
module_init(pmagaafb_init);
|
|
module_exit(pmagaafb_exit);
|
|
#endif
|