patch-2.4.20 linux-2.4.20/drivers/video/sti/sticon.c

• Lines: 405
• Date: Thu Nov 28 15:53:15 2002
• Orig file: linux-2.4.19/drivers/video/sti/sticon.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.19/drivers/video/sti/sticon.c linux-2.4.20/drivers/video/sti/sticon.c
@@ -0,0 +1,404 @@
+/*
+ *  linux/drivers/video/sti/sticon.c - console driver using HP's STI firmware
+ *
+ *	Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
+ *	Copyright (C) 2001 Helge Deller <deller@gmx.de>
+ *
+ *  Based on linux/drivers/video/vgacon.c and linux/drivers/video/fbcon.c,
+ *  which were
+ *
+ *	Created 28 Sep 1997 by Geert Uytterhoeven
+ *	Rewritten by Martin Mares <mj@ucw.cz>, July 1998
+ *	Copyright (C) 1991, 1992  Linus Torvalds
+ *			    1995  Jay Estabrook
+ *	Copyright (C) 1995 Geert Uytterhoeven
+ *	Copyright (C) 1993 Bjoern Brauel
+ *			   Roman Hodek
+ *	Copyright (C) 1993 Hamish Macdonald
+ *			   Greg Harp
+ *	Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
+ *
+ *	      with work by William Rucklidge (wjr@cs.cornell.edu)
+ *			   Geert Uytterhoeven
+ *			   Jes Sorensen (jds@kom.auc.dk)
+ *			   Martin Apel
+ *	      with work by Guenther Kelleter
+ *			   Martin Schaller
+ *			   Andreas Schwab
+ *			   Emmanuel Marty (core@ggi-project.org)
+ *			   Jakub Jelinek (jj@ultra.linux.cz)
+ *			   Martin Mares <mj@ucw.cz>
+ *
+ *  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.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/tty.h>
+#include <linux/console.h>
+#include <linux/console_struct.h>
+#include <linux/errno.h>
+#include <linux/vt_kern.h>
+#include <linux/kd.h>
+#include <linux/selection.h>
+
+#include <asm/io.h>
+
+#include "sticore.h"
+
+/* switching to graphics mode */
+#define BLANK 0
+static int vga_is_gfx;
+
+
+/* Software scrollback */
+
+static unsigned long softback_buf, softback_curr;
+static unsigned long softback_in;
+static unsigned long /* softback_top, */ softback_end;
+static int softback_lines;
+
+
+/* software cursor */
+
+static int cursor_drawn;
+#define CURSOR_DRAW_DELAY		(1)
+#define DEFAULT_CURSOR_BLINK_RATE	(20)
+
+static int vbl_cursor_cnt;
+
+static inline void cursor_undrawn(void)
+{
+    vbl_cursor_cnt = 0;
+    cursor_drawn = 0;
+}
+
+
+static const char *__init sticon_startup(void)
+{
+    return "STI console";
+}
+
+static int sticon_set_palette(struct vc_data *c, unsigned char *table)
+{
+    return -EINVAL;
+}
+
+static int sticon_font_op(struct vc_data *c, struct console_font_op *op)
+{
+    return -ENOSYS;
+}
+
+static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos)
+{
+    int unit = conp->vc_num;
+    int redraw_cursor = 0;
+
+    if (vga_is_gfx || console_blanked)
+	    return;
+	    
+    if (vt_cons[unit]->vc_mode != KD_TEXT)
+    	    return;
+#if 0
+    if ((p->cursor_x == xpos) && (p->cursor_y == ypos)) {
+	    cursor_undrawn();
+	    redraw_cursor = 1;
+    }
+#endif
+
+    sti_putc(default_sti, c, ypos, xpos);
+
+    if (redraw_cursor)
+	    vbl_cursor_cnt = CURSOR_DRAW_DELAY;
+}
+
+static void sticon_putcs(struct vc_data *conp, const unsigned short *s,
+			 int count, int ypos, int xpos)
+{
+    int unit = conp->vc_num;
+    int redraw_cursor = 0;
+
+    if (vga_is_gfx || console_blanked)
+	    return;
+
+    if (vt_cons[unit]->vc_mode != KD_TEXT)
+    	    return;
+    
+#if 0
+    if ((p->cursor_y == ypos) && (xpos <= p->cursor_x) &&
+	(p->cursor_x < (xpos + count))) {
+	    cursor_undrawn();
+	    redraw_cursor = 1;
+    }
+#endif
+
+    while (count--) {
+	sti_putc(default_sti, scr_readw(s++), ypos, xpos++);
+    }
+
+    if (redraw_cursor)
+	    vbl_cursor_cnt = CURSOR_DRAW_DELAY;
+}
+
+static void sticon_cursor(struct vc_data *conp, int mode)
+{
+    unsigned short car1;
+
+    car1 = conp->vc_screenbuf[conp->vc_x + conp->vc_y * conp->vc_cols];
+    switch (mode) {
+    case CM_ERASE:
+	sti_putc(default_sti, car1, conp->vc_y, conp->vc_x);
+	break;
+    case CM_MOVE:
+    case CM_DRAW:
+	switch (conp->vc_cursor_type & 0x0f) {
+	case CUR_UNDERLINE:
+	case CUR_LOWER_THIRD:
+	case CUR_LOWER_HALF:
+	case CUR_TWO_THIRDS:
+	case CUR_BLOCK:
+	    sti_putc(default_sti, (car1 & 255) + (0 << 8) + (7 << 11),
+		     conp->vc_y, conp->vc_x);
+	    break;
+	}
+	break;
+    }
+}
+
+static int
+sticon_scroll(struct vc_data *conp, int t, int b, int dir, int count)
+{
+    struct sti_struct *sti = default_sti;
+
+    if (vga_is_gfx)
+        return 0;
+
+    sticon_cursor(conp, CM_ERASE);
+
+    switch (dir) {
+    case SM_UP:
+	sti_bmove(sti, t + count, 0, t, 0, b - t - count, conp->vc_cols);
+	sti_clear(sti, b - count, 0, count, conp->vc_cols, conp->vc_video_erase_char);
+	break;
+
+    case SM_DOWN:
+	sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols);
+	sti_clear(sti, t, 0, count, conp->vc_cols, conp->vc_video_erase_char);
+	break;
+    }
+
+    return 0;
+}
+
+static void
+sticon_bmove(struct vc_data *conp, int sy, int sx, int dy, int dx,
+	     int height, int width)
+{
+    if (!width || !height)
+	    return;
+#if 0
+    if (((sy <= p->cursor_y) && (p->cursor_y < sy+height) &&
+	(sx <= p->cursor_x) && (p->cursor_x < sx+width)) ||
+	((dy <= p->cursor_y) && (p->cursor_y < dy+height) &&
+	(dx <= p->cursor_x) && (p->cursor_x < dx+width)))
+		sticon_cursor(p, CM_ERASE /*|CM_SOFTBACK*/);
+#endif
+
+    sti_bmove(default_sti, sy, sx, dy, dx, height, width);
+}
+
+static void sticon_init(struct vc_data *c, int init)
+{
+    struct sti_struct *sti = default_sti;
+    int vc_cols, vc_rows;
+
+    sti_set(sti, 0, 0, sti_onscreen_y(sti), sti_onscreen_x(sti), 0);
+    vc_cols = sti_onscreen_x(sti) / sti->font_width;
+    vc_rows = sti_onscreen_y(sti) / sti->font_height;
+    c->vc_can_do_color = 1;
+    
+    if (init) {
+	c->vc_cols = vc_cols;
+	c->vc_rows = vc_rows;
+    } else {
+	/* vc_rows = (c->vc_rows > vc_rows) ? vc_rows : c->vc_rows; */
+	/* vc_cols = (c->vc_cols > vc_cols) ? vc_cols : c->vc_cols; */
+	vc_resize_con(vc_rows, vc_cols, c->vc_num);
+    }
+}
+
+static void sticon_deinit(struct vc_data *c)
+{
+}
+
+static void sticon_clear(struct vc_data *conp, int sy, int sx, int height,
+			 int width)
+{
+    if (!height || !width)
+	return;
+
+    sti_clear(default_sti, sy, sx, height, width, conp->vc_video_erase_char);
+}
+
+static int sticon_switch(struct vc_data *conp)
+{
+    return 1;	/* needs refreshing */
+}
+
+static int sticon_set_origin(struct vc_data *conp)
+{
+    return 0;
+}
+
+static int sticon_blank(struct vc_data *c, int blank)
+{
+    switch (blank) {
+    case 0:		/* unblank */
+	vga_is_gfx = 0;
+	/* Tell console.c that it has to restore the screen itself */
+	return 1;
+    case 1:		/* normal blanking */
+    default:		/* VESA blanking */
+	if (vga_is_gfx)
+		return 0;
+	sticon_set_origin(c);
+	sti_clear(default_sti, 0,0, c->vc_rows, c->vc_cols, BLANK);
+	return 1;
+    case -1:		/* Entering graphic mode */
+	sti_clear(default_sti, 0,0, c->vc_rows, c->vc_cols, BLANK);
+	vga_is_gfx = 1;
+	return 1;
+    }
+    return 1;		/* console needs to restore screen itself */
+}
+
+static int sticon_scrolldelta(struct vc_data *conp, int lines)
+{
+    return 0;
+}
+
+static u16 *sticon_screen_pos(struct vc_data *conp, int offset)
+{
+    int line;
+    unsigned long p;
+
+    if (conp->vc_num != fg_console || !softback_lines)
+    	return (u16 *)(conp->vc_origin + offset);
+    line = offset / conp->vc_size_row;
+    if (line >= softback_lines)
+    	return (u16 *)(conp->vc_origin + offset - softback_lines * conp->vc_size_row);
+    p = softback_curr + offset;
+    if (p >= softback_end)
+    	p += softback_buf - softback_end;
+    return (u16 *)p;
+}
+
+static unsigned long sticon_getxy(struct vc_data *conp, unsigned long pos,
+				  int *px, int *py)
+{
+    int x, y;
+    unsigned long ret;
+    if (pos >= conp->vc_origin && pos < conp->vc_scr_end) {
+    	unsigned long offset = (pos - conp->vc_origin) / 2;
+    	
+    	x = offset % conp->vc_cols;
+    	y = offset / conp->vc_cols;
+    	if (conp->vc_num == fg_console)
+    	    y += softback_lines;
+    	ret = pos + (conp->vc_cols - x) * 2;
+    } else if (conp->vc_num == fg_console && softback_lines) {
+    	unsigned long offset = pos - softback_curr;
+    	
+    	if (pos < softback_curr)
+    	    offset += softback_end - softback_buf;
+    	offset /= 2;
+    	x = offset % conp->vc_cols;
+    	y = offset / conp->vc_cols;
+	ret = pos + (conp->vc_cols - x) * 2;
+	if (ret == softback_end)
+	    ret = softback_buf;
+	if (ret == softback_in)
+	    ret = conp->vc_origin;
+    } else {
+    	/* Should not happen */
+    	x = y = 0;
+    	ret = conp->vc_origin;
+    }
+    if (px) *px = x;
+    if (py) *py = y;
+    return ret;
+}
+
+static u8 sticon_build_attr(struct vc_data *conp, u8 color, u8 intens,
+			    u8 blink, u8 underline, u8 reverse)
+{
+    u8 attr = ((color & 0x70) >> 1) | ((color & 7));
+
+    if (reverse) {
+	color = ((color >> 3) & 0x7) | ((color & 0x7) << 3);
+    }
+
+    return attr;
+}
+
+void sticon_invert_region(struct vc_data *conp, u16 *p, int count)
+{
+    int col = 1; /* vga_can_do_color; */
+
+    while (count--) {
+	u16 a = scr_readw(p);
+
+	if (col)
+		a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4);
+	else
+		a = ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700;
+
+	scr_writew(a, p++);
+    }
+}
+
+void sticon_save_screen(struct vc_data *conp)
+{
+}
+
+struct consw sti_con = {
+    con_startup:	sticon_startup,
+    con_init:		sticon_init,
+    con_deinit:		sticon_deinit,
+    con_clear:		sticon_clear,
+    con_putc:		sticon_putc,
+    con_putcs:		sticon_putcs,
+    con_cursor:		sticon_cursor,
+    con_scroll:		sticon_scroll,
+    con_bmove:		sticon_bmove,
+    con_switch:		sticon_switch,
+    con_blank:		sticon_blank,
+    con_font_op:	sticon_font_op,
+    con_set_palette:	sticon_set_palette,
+    con_scrolldelta:	sticon_scrolldelta,
+    con_set_origin:	sticon_set_origin,
+    con_save_screen:	sticon_save_screen, 
+    con_build_attr:	sticon_build_attr,
+    con_invert_region:	sticon_invert_region, 
+    con_screen_pos:	sticon_screen_pos,
+    con_getxy:		sticon_getxy,
+};
+
+
+
+int __init sticonsole_init(void)
+{
+    if (sti_init_roms()) {
+	if (conswitchp == &dummy_con) {
+        	printk(KERN_INFO "sticon: Initializing STI text console.\n");
+		take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1, 1);
+	}
+	return 0;
+    } else
+	return -ENODEV;
+}
+
+module_init(sticonsole_init);