Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 514 insertions, 0 deletions

diff --git a/drivers/video/pmag-aa-fb.c b/drivers/video/pmag-aa-fb.c
new file mode 100644
index 000000000000..3e00ad7f2e31
--- /dev/null
+++ b/drivers/video/pmag-aa-fb.c
@@ -0,0 +1,514 @@
+/*
+ *      linux/drivers/video/pmag-aa-fb.c
+ *      Copyright 2002 Karsten Merker <merker@debian.org>
+ *
+ *      PMAG-AA TurboChannel framebuffer card support ... derived from
+ *      pmag-ba-fb.c, which is Copyright (C) 1999, 2000, 2001 by
+ *      Michael Engel <engel@unix-ag.org>, Karsten Merker <merker@debian.org>
+ *      and Harald Koerfgen <hkoerfg@web.de>, which itself is derived from
+ *      "HP300 Topcat framebuffer support (derived from macfb of all things)
+ *      Phil Blundell <philb@gnu.org> 1998"
+ *
+ *      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.
+ *
+ *      2002-09-28  Karsten Merker <merker@linuxtag.org>
+ *              Version 0.01: First try to get a PMAG-AA running.
+ *
+ *      2003-02-24  Thiemo Seufer  <seufer@csv.ica.uni-stuttgart.de>
+ *              Version 0.02: Major code cleanup.
+ *
+ *      2003-09-21  Thiemo Seufer  <seufer@csv.ica.uni-stuttgart.de>
+ *              Hardware cursor support.
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/fb.h>
+#include <linux/console.h>
+
+#include <asm/bootinfo.h>
+#include <asm/dec/machtype.h>
+#include <asm/dec/tc.h>
+
+#include <video/fbcon.h>
+#include <video/fbcon-cfb8.h>
+
+#include "bt455.h"
+#include "bt431.h"
+
+/* Version information */
+#define DRIVER_VERSION "0.02"
+#define DRIVER_AUTHOR "Karsten Merker <merker@linuxtag.org>"
+#define DRIVER_DESCRIPTION "PMAG-AA Framebuffer Driver"
+
+/* Prototypes */
+static int aafb_set_var(struct fb_var_screeninfo *var, int con,
+                        struct fb_info *info);
+
+/*
+ * Bt455 RAM DAC register base offset (rel. to TC slot base address).
+ */
+#define PMAG_AA_BT455_OFFSET            0x100000
+
+/*
+ * Bt431 cursor generator offset (rel. to TC slot base address).
+ */
+#define PMAG_AA_BT431_OFFSET            0x180000
+
+/*
+ * Begin of PMAG-AA framebuffer memory relative to TC slot address,
+ * resolution is 1280x1024x1 (8 bits deep, but only LSB is used).
+ */
+#define PMAG_AA_ONBOARD_FBMEM_OFFSET    0x200000
+
+struct aafb_cursor {
+        struct timer_list timer;
+        int enable;
+        int on;
+        int vbl_cnt;
+        int blink_rate;
+        u16 x, y, width, height;
+};
+
+#define CURSOR_TIMER_FREQ       (HZ / 50)
+#define CURSOR_BLINK_RATE       (20)
+#define CURSOR_DRAW_DELAY       (2)
+
+struct aafb_info {
+        struct fb_info info;
+        struct display disp;
+        struct aafb_cursor cursor;
+        struct bt455_regs *bt455;
+        struct bt431_regs *bt431;
+        unsigned long fb_start;
+        unsigned long fb_size;
+        unsigned long fb_line_length;
+};
+
+/*
+ * Max 3 TURBOchannel slots -> max 3 PMAG-AA.
+ */
+static struct aafb_info my_fb_info[3];
+
+static struct aafb_par {
+} current_par;
+
+static int currcon = -1;
+
+static void aafb_set_cursor(struct aafb_info *info, int on)
+{
+        struct aafb_cursor *c = &info->cursor;
+
+        if (on) {
+                bt431_position_cursor(info->bt431, c->x, c->y);
+                bt431_enable_cursor(info->bt431);
+        } else
+                bt431_erase_cursor(info->bt431);
+}
+
+static void aafbcon_cursor(struct display *disp, int mode, int x, int y)
+{
+        struct aafb_info *info = (struct aafb_info *)disp->fb_info;
+        struct aafb_cursor *c = &info->cursor;
+
+        x *= fontwidth(disp);
+        y *= fontheight(disp);
+
+        if (c->x == x && c->y == y && (mode == CM_ERASE) == !c->enable)
+                return;
+
+        c->enable = 0;
+        if (c->on)
+                aafb_set_cursor(info, 0);
+        c->x = x - disp->var.xoffset;
+        c->y = y - disp->var.yoffset;
+
+        switch (mode) {
+                case CM_ERASE:
+                        c->on = 0;
+                        break;
+                case CM_DRAW:
+                case CM_MOVE:
+                        if (c->on)
+                                aafb_set_cursor(info, c->on);
+                        else
+                                c->vbl_cnt = CURSOR_DRAW_DELAY;
+                        c->enable = 1;
+                        break;
+        }
+}
+
+static int aafbcon_set_font(struct display *disp, int width, int height)
+{
+        struct aafb_info *info = (struct aafb_info *)disp->fb_info;
+        struct aafb_cursor *c = &info->cursor;
+        u8 fgc = ~attr_bgcol_ec(disp, disp->conp);
+
+        if (width > 64 || height > 64 || width < 0 || height < 0)
+                return -EINVAL;
+
+        c->height = height;
+        c->width = width;
+
+        bt431_set_font(info->bt431, fgc, width, height);
+
+        return 1;
+}
+
+static void aafb_cursor_timer_handler(unsigned long data)
+{
+        struct aafb_info *info = (struct aafb_info *)data;
+        struct aafb_cursor *c = &info->cursor;
+
+        if (!c->enable)
+                goto out;
+
+        if (c->vbl_cnt && --c->vbl_cnt == 0) {
+                c->on ^= 1;
+                aafb_set_cursor(info, c->on);
+                c->vbl_cnt = c->blink_rate;
+        }
+
+out:
+        c->timer.expires = jiffies + CURSOR_TIMER_FREQ;
+        add_timer(&c->timer);
+}
+
+static void __init aafb_cursor_init(struct aafb_info *info)
+{
+        struct aafb_cursor *c = &info->cursor;
+
+        c->enable = 1;
+        c->on = 1;
+        c->x = c->y = 0;
+        c->width = c->height = 0;
+        c->vbl_cnt = CURSOR_DRAW_DELAY;
+        c->blink_rate = CURSOR_BLINK_RATE;
+
+        init_timer(&c->timer);
+        c->timer.data = (unsigned long)info;
+        c->timer.function = aafb_cursor_timer_handler;
+        mod_timer(&c->timer, jiffies + CURSOR_TIMER_FREQ);
+}
+
+static void __exit aafb_cursor_exit(struct aafb_info *info)
+{
+        struct aafb_cursor *c = &info->cursor;
+
+        del_timer_sync(&c->timer);
+}
+
+static struct display_switch aafb_switch8 = {
+        .setup = fbcon_cfb8_setup,
+        .bmove = fbcon_cfb8_bmove,
+        .clear = fbcon_cfb8_clear,
+        .putc = fbcon_cfb8_putc,
+        .putcs = fbcon_cfb8_putcs,
+        .revc = fbcon_cfb8_revc,
+        .cursor = aafbcon_cursor,
+        .set_font = aafbcon_set_font,
+        .clear_margins = fbcon_cfb8_clear_margins,
+        .fontwidthmask = FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
+};
+
+static void aafb_get_par(struct aafb_par *par)
+{
+        *par = current_par;
+}
+
+static int aafb_get_fix(struct fb_fix_screeninfo *fix, int con,
+                        struct fb_info *info)
+{
+        struct aafb_info *ip = (struct aafb_info *)info;
+
+        memset(fix, 0, sizeof(struct fb_fix_screeninfo));
+        strcpy(fix->id, "PMAG-AA");
+        fix->smem_start = ip->fb_start;
+        fix->smem_len = ip->fb_size;
+        fix->type = FB_TYPE_PACKED_PIXELS;
+        fix->ypanstep = 1;
+        fix->ywrapstep = 1;
+        fix->visual = FB_VISUAL_MONO10;
+        fix->line_length = 1280;
+        fix->accel = FB_ACCEL_NONE;
+
+        return 0;
+}
+
+static void aafb_set_disp(struct display *disp, int con,
+                          struct aafb_info *info)
+{
+        struct fb_fix_screeninfo fix;
+
+        disp->fb_info = &info->info;
+        aafb_set_var(&disp->var, con, &info->info);
+        if (disp->conp && disp->conp->vc_sw && disp->conp->vc_sw->con_cursor)
+                disp->conp->vc_sw->con_cursor(disp->conp, CM_ERASE);
+        disp->dispsw = &aafb_switch8;
+        disp->dispsw_data = 0;
+
+        aafb_get_fix(&fix, con, &info->info);
+        disp->screen_base = (u8 *) fix.smem_start;
+        disp->visual = fix.visual;
+        disp->type = fix.type;
+        disp->type_aux = fix.type_aux;
+        disp->ypanstep = fix.ypanstep;
+        disp->ywrapstep = fix.ywrapstep;
+        disp->line_length = fix.line_length;
+        disp->next_line = 2048;
+        disp->can_soft_blank = 1;
+        disp->inverse = 0;
+        disp->scrollmode = SCROLL_YREDRAW;
+
+        aafbcon_set_font(disp, fontwidth(disp), fontheight(disp));
+}
+
+static int aafb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
+                         struct fb_info *info)
+{
+        static u16 color[2] = {0x0000, 0x000f};
+        static struct fb_cmap aafb_cmap = {0, 2, color, color, color, NULL};
+
+        fb_copy_cmap(&aafb_cmap, cmap, kspc ? 0 : 2);
+        return 0;
+}
+
+static int aafb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
+                         struct fb_info *info)
+{
+        u16 color[2] = {0x0000, 0x000f};
+
+        if (cmap->start == 0
+            && cmap->len == 2
+            && memcmp(cmap->red, color, sizeof(color)) == 0
+            && memcmp(cmap->green, color, sizeof(color)) == 0
+            && memcmp(cmap->blue, color, sizeof(color)) == 0
+            && cmap->transp == NULL)
+                return 0;
+        else
+                return -EINVAL;
+}
+
+static int aafb_ioctl(struct inode *inode, struct file *file, u32 cmd,
+                      unsigned long arg, int con, struct fb_info *info)
+{
+        /* TODO: Not yet implemented */
+        return -ENOIOCTLCMD;
+}
+
+static int aafb_switch(int con, struct fb_info *info)
+{
+        struct aafb_info *ip = (struct aafb_info *)info;
+        struct display *old = (currcon < 0) ? &ip->disp : (fb_display + currcon);
+        struct display *new = (con < 0) ? &ip->disp : (fb_display + con);
+
+        if (old->conp && old->conp->vc_sw && old->conp->vc_sw->con_cursor)
+                old->conp->vc_sw->con_cursor(old->conp, CM_ERASE);
+
+        /* Set the current console. */
+        currcon = con;
+        aafb_set_disp(new, con, ip);
+
+        return 0;
+}
+
+static void aafb_encode_var(struct fb_var_screeninfo *var,
+                            struct aafb_par *par)
+{
+        var->xres = 1280;
+        var->yres = 1024;
+        var->xres_virtual = 2048;
+        var->yres_virtual = 1024;
+        var->xoffset = 0;
+        var->yoffset = 0;
+        var->bits_per_pixel = 8;
+        var->grayscale = 1;
+        var->red.offset = 0;
+        var->red.length = 0;
+        var->red.msb_right = 0;
+        var->green.offset = 0;
+        var->green.length = 1;
+        var->green.msb_right = 0;
+        var->blue.offset = 0;
+        var->blue.length = 0;
+        var->blue.msb_right = 0;
+        var->transp.offset = 0;
+        var->transp.length = 0;
+        var->transp.msb_right = 0;
+        var->nonstd = 0;
+        var->activate &= ~FB_ACTIVATE_MASK & FB_ACTIVATE_NOW;
+        var->accel_flags = 0;
+        var->sync = FB_SYNC_ON_GREEN;
+        var->vmode &= ~FB_VMODE_MASK & FB_VMODE_NONINTERLACED;
+}
+
+static int aafb_get_var(struct fb_var_screeninfo *var, int con,
+                        struct fb_info *info)
+{
+        if (con < 0) {
+                struct aafb_par par;
+
+                memset(var, 0, sizeof(struct fb_var_screeninfo));
+                aafb_get_par(&par);
+                aafb_encode_var(var, &par);
+        } else
+                *var = info->var;
+
+        return 0;
+}
+
+static int aafb_set_var(struct fb_var_screeninfo *var, int con,
+                        struct fb_info *info)
+{
+        struct aafb_par par;
+
+        aafb_get_par(&par);
+        aafb_encode_var(var, &par);
+        info->var = *var;
+
+        return 0;
+}
+
+static int aafb_update_var(int con, struct fb_info *info)
+{
+        struct aafb_info *ip = (struct aafb_info *)info;
+        struct display *disp = (con < 0) ? &ip->disp : (fb_display + con);
+
+        if (con == currcon)
+                aafbcon_cursor(disp, CM_ERASE, ip->cursor.x, ip->cursor.y);
+
+        return 0;
+}
+
+/* 0 unblanks, any other blanks. */
+
+static void aafb_blank(int blank, struct fb_info *info)
+{
+        struct aafb_info *ip = (struct aafb_info *)info;
+        u8 val = blank ? 0x00 : 0x0f;
+
+        bt455_write_cmap_entry(ip->bt455, 1, val, val, val);
+        aafbcon_cursor(&ip->disp, CM_ERASE, ip->cursor.x, ip->cursor.y);
+}
+
+static struct fb_ops aafb_ops = {
+        .owner = THIS_MODULE,
+        .fb_get_fix = aafb_get_fix,
+        .fb_get_var = aafb_get_var,
+        .fb_set_var = aafb_set_var,
+        .fb_get_cmap = aafb_get_cmap,
+        .fb_set_cmap = aafb_set_cmap,
+        .fb_ioctl = aafb_ioctl
+};
+
+static int __init init_one(int slot)
+{
+        unsigned long base_addr = get_tc_base_addr(slot);
+        struct aafb_info *ip = &my_fb_info[slot];
+
+        memset(ip, 0, sizeof(struct aafb_info));
+
+        /*
+         * Framebuffer display memory base address and friends.
+         */
+        ip->bt455 = (struct bt455_regs *) (base_addr + PMAG_AA_BT455_OFFSET);
+        ip->bt431 = (struct bt431_regs *) (base_addr + PMAG_AA_BT431_OFFSET);
+        ip->fb_start = base_addr + PMAG_AA_ONBOARD_FBMEM_OFFSET;
+        ip->fb_size = 2048 * 1024; /* fb_fix_screeninfo.smem_length
+                                      seems to be physical */
+        ip->fb_line_length = 2048;
+
+        /*
+         * Let there be consoles..
+         */
+        strcpy(ip->info.modename, "PMAG-AA");
+        ip->info.node = -1;
+        ip->info.flags = FBINFO_FLAG_DEFAULT;
+        ip->info.fbops = &aafb_ops;
+        ip->info.disp = &ip->disp;
+        ip->info.changevar = NULL;
+        ip->info.switch_con = &aafb_switch;
+        ip->info.updatevar = &aafb_update_var;
+        ip->info.blank = &aafb_blank;
+
+        aafb_set_disp(&ip->disp, currcon, ip);
+
+        /*
+         * Configure the RAM DACs.
+         */
+        bt455_erase_cursor(ip->bt455);
+
+        /* Init colormap. */
+        bt455_write_cmap_entry(ip->bt455, 0, 0x00, 0x00, 0x00);
+        bt455_write_cmap_entry(ip->bt455, 1, 0x0f, 0x0f, 0x0f);
+
+        /* Init hardware cursor. */
+        bt431_init_cursor(ip->bt431);
+        aafb_cursor_init(ip);
+
+        /* Clear the screen. */
+        memset ((void *)ip->fb_start, 0, ip->fb_size);
+
+        if (register_framebuffer(&ip->info) < 0)
+                return -EINVAL;
+
+        printk(KERN_INFO "fb%d: %s frame buffer in TC slot %d\n",
+               GET_FB_IDX(ip->info.node), ip->info.modename, slot);
+
+        return 0;
+}
+
+static int __exit exit_one(int slot)
+{
+        struct aafb_info *ip = &my_fb_info[slot];
+
+        if (unregister_framebuffer(&ip->info) < 0)
+                return -EINVAL;
+
+        return 0;
+}
+
+/*
+ * Initialise the framebuffer.
+ */
+int __init pmagaafb_init(void)
+{
+        int sid;
+        int found = 0;
+
+        while ((sid = search_tc_card("PMAG-AA")) >= 0) {
+                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