Linux-2.6.12-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, 258 insertions, 0 deletions

diff --git a/drivers/video/g364fb.c b/drivers/video/g364fb.c
new file mode 100644
index 000000000000..605d1a132020
--- /dev/null
+++ b/drivers/video/g364fb.c
@@ -0,0 +1,258 @@
+/* $Id: g364fb.c,v 1.3 1998/08/28 22:43:00 tsbogend Exp $
+ *
+ * linux/drivers/video/g364fb.c -- Mips Magnum frame buffer device
+ *
+ * (C) 1998 Thomas Bogendoerfer
+ *
+ *  This driver is based on tgafb.c
+ *
+ *	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.
+ */
+
+#include <linux/module.h>
+#include <linux/console.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 <asm/io.h>
+#include <asm/jazz.h>
+
+/* 
+ * Various defines for the G364
+ */
+#define G364_MEM_BASE   0xe4400000
+#define G364_PORT_BASE  0xe4000000
+#define ID_REG 		0xe4000000	/* Read only */
+#define BOOT_REG 	0xe4080000
+#define TIMING_REG 	0xe4080108	/* to 0x080170 - DON'T TOUCH! */
+#define DISPLAY_REG 	0xe4080118
+#define VDISPLAY_REG 	0xe4080150
+#define MASK_REG 	0xe4080200
+#define CTLA_REG 	0xe4080300
+#define CURS_TOGGLE 	0x800000
+#define BIT_PER_PIX	0x700000	/* bits 22 to 20 of Control A */
+#define DELAY_SAMPLE    0x080000
+#define PORT_INTER	0x040000
+#define PIX_PIPE_DEL	0x030000	/* bits 17 and 16 of Control A */
+#define PIX_PIPE_DEL2	0x008000	/* same as above - don't ask me why */
+#define TR_CYCLE_TOG	0x004000
+#define VRAM_ADR_INC	0x003000	/* bits 13 and 12 of Control A */
+#define BLANK_OFF	0x000800
+#define FORCE_BLANK	0x000400
+#define BLK_FUN_SWTCH	0x000200
+#define BLANK_IO	0x000100
+#define BLANK_LEVEL	0x000080
+#define A_VID_FORM	0x000040
+#define D_SYNC_FORM	0x000020
+#define FRAME_FLY_PAT	0x000010
+#define OP_MODE		0x000008
+#define INTL_STAND	0x000004
+#define SCRN_FORM	0x000002
+#define ENABLE_VTG	0x000001
+#define TOP_REG 	0xe4080400
+#define CURS_PAL_REG 	0xe4080508	/* to 0x080518 */
+#define CHKSUM_REG 	0xe4080600	/* to 0x080610 - unused */
+#define CURS_POS_REG 	0xe4080638
+#define CLR_PAL_REG 	0xe4080800	/* to 0x080ff8 */
+#define CURS_PAT_REG 	0xe4081000	/* to 0x081ff8 */
+#define MON_ID_REG 	0xe4100000	/* unused */
+#define RESET_REG 	0xe4180000	/* Write only */
+
+static struct fb_info fb_info;
+
+static struct fb_fix_screeninfo fb_fix __initdata = {
+	.id 		= "G364 8plane",
+	.smem_start 	= 0x40000000,	/* physical address */
+	.type 		= FB_TYPE_PACKED_PIXELS,
+	.visual 	= FB_VISUAL_PSEUDOCOLOR,
+	.ypanstep 	= 1,
+	.accel 		= FB_ACCEL_NONE,
+};
+
+static struct fb_var_screeninfo fb_var __initdata = {
+	.bits_per_pixel = 8,
+	.red 		= { 0, 8, 0 },
+      	.green 		= { 0, 8, 0 },
+      	.blue		= { 0, 8, 0 },
+      	.activate	= FB_ACTIVATE_NOW,
+      	.height		= -1,
+      	.width		= -1,
+      	.pixclock	= 39722,
+      	.left_margin	= 40,
+      	.right_margin	= 24,
+      	.upper_margin	= 32,
+      	.lower_margin	= 11,
+      	.hsync_len 	= 96,
+      	.vsync_len 	= 2,
+      	.vmode		= FB_VMODE_NONINTERLACED,
+};
+
+/*
+ *  Interface used by the world
+ */
+int g364fb_init(void);
+
+static int g364fb_pan_display(struct fb_var_screeninfo *var,
+			      struct fb_info *info);
+static int g364fb_setcolreg(u_int regno, u_int red, u_int green,
+			    u_int blue, u_int transp,
+			    struct fb_info *info);
+static int g364fb_cursor(struct fb_info *info, struct fb_cursor *cursor);
+static int g364fb_blank(int blank, struct fb_info *info);
+
+static struct fb_ops g364fb_ops = {
+	.owner		= THIS_MODULE,
+	.fb_setcolreg	= g364fb_setcolreg,
+	.fb_pan_display	= g364fb_pan_display,
+	.fb_blank	= g364fb_blank,
+	.fb_fillrect	= cfb_fillrect,
+	.fb_copyarea	= cfb_copyarea,
+	.fb_imageblit	= cfb_imageblit,
+	.fb_cursor	= g364fb_cursor,
+};
+
+int g364fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
+{
+	
+	switch (cursor->enable) {
+	case CM_ERASE:
+		*(unsigned int *) CTLA_REG |= CURS_TOGGLE;
+		break;
+
+	case CM_MOVE:
+	case CM_DRAW:
+		*(unsigned int *) CTLA_REG &= ~CURS_TOGGLE;
+		*(unsigned int *) CURS_POS_REG =
+		    ((x * fontwidth(p)) << 12) | ((y * fontheight(p)) -
+						  info->var.yoffset);
+		break;
+	}
+	return 0;
+}
+
+/*
+ *  Pan or Wrap the Display
+ *
+ *  This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
+ */
+static int g364fb_pan_display(struct fb_var_screeninfo *var, 
+			      struct fb_info *info)
+{
+	if (var->xoffset || var->yoffset + var->yres > var->yres_virtual)
+		return -EINVAL;
+
+	*(unsigned int *) TOP_REG = var->yoffset * var->xres;
+	return 0;
+}
+
+/*
+ *  Blank the display.
+ */
+static int g364fb_blank(int blank, struct fb_info *info)
+{
+	if (blank)
+		*(unsigned int *) CTLA_REG |= FORCE_BLANK;
+	else
+		*(unsigned int *) CTLA_REG &= ~FORCE_BLANK;
+	return 0;
+}
+
+/*
+ *  Set a single color register. Return != 0 for invalid regno.
+ */
+static int g364fb_setcolreg(u_int regno, u_int red, u_int green,
+			    u_int blue, u_int transp, struct fb_info *info)
+{
+	volatile unsigned int *ptr = (volatile unsigned int *) CLR_PAL_REG;
+
+	if (regno > 255)
+		return 1;
+
+	red >>= 8;
+	green >>= 8;
+	blue >>= 8;
+
+	ptr[regno << 1] = (red << 16) | (green << 8) | blue;
+
+	return 0;
+}
+
+/*
+ *  Initialisation
+ */
+int __init g364fb_init(void)
+{
+	volatile unsigned int *pal_ptr =
+	    (volatile unsigned int *) CLR_PAL_REG;
+	volatile unsigned int *curs_pal_ptr =
+	    (volatile unsigned int *) CURS_PAL_REG;
+	int mem, i, j;
+
+	if (fb_get_options("g364fb", NULL))
+		return -ENODEV;
+
+	/* TBD: G364 detection */
+
+	/* get the resolution set by ARC console */
+	*(volatile unsigned int *) CTLA_REG &= ~ENABLE_VTG;
+	fb_var.xres =
+	    (*((volatile unsigned int *) DISPLAY_REG) & 0x00ffffff) * 4;
+	fb_var.yres =
+	    (*((volatile unsigned int *) VDISPLAY_REG) & 0x00ffffff) / 2;
+	*(volatile unsigned int *) CTLA_REG |= ENABLE_VTG;
+
+	/* setup cursor */
+	curs_pal_ptr[0] |= 0x00ffffff;
+	curs_pal_ptr[2] |= 0x00ffffff;
+	curs_pal_ptr[4] |= 0x00ffffff;
+
+	/*
+	 * first set the whole cursor to transparent
+	 */
+	for (i = 0; i < 512; i++)
+		*(unsigned short *) (CURS_PAT_REG + i * 8) = 0;
+
+	/*
+	 * switch the last two lines to cursor palette 3
+	 * we assume here, that FONTSIZE_X is 8
+	 */
+	*(unsigned short *) (CURS_PAT_REG + 14 * 64) = 0xffff;
+	*(unsigned short *) (CURS_PAT_REG + 15 * 64) = 0xffff;
+	fb_var.xres_virtual = fbvar.xres;
+	fb_fix.line_length = (xres / 8) * fb_var.bits_per_pixel;
+	fb_fix.smem_start = 0x40000000;	/* physical address */
+	/* get size of video memory; this is special for the JAZZ hardware */
+	mem = (r4030_read_reg32(JAZZ_R4030_CONFIG) >> 8) & 3;
+	fb_fix.smem_len = (1 << (mem * 2)) * 512 * 1024;
+	fb_var.yres_virtual = fb_fix.smem_len / fb_var.xres;
+
+	fb_info.fbops = &g364fb_ops;
+	fb_info.screen_base = (char *) G364_MEM_BASE;	/* virtual kernel address */
+	fb_info.var = fb_var;
+	fb_info.fix = fb_fix;
+	fb_info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
+
+	fb_alloc_cmap(&fb_info.cmap, 255, 0);
+
+	if (register_framebuffer(&fb_info) < 0)
+		return -EINVAL;
+	return 0;
+}
+
+module_init(g364fb_init);
+MODULE_LICENSE("GPL");