Release 4.11 drivers/video/fbdev/g364fb.c
/* $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/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fb.h>
#include <linux/init.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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 81 | 84.38% | 2 | 66.67% |
| James Simmons | 15 | 15.62% | 1 | 33.33% |
| Total | 96 | 100.00% | 3 | 100.00% |
/*
* 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 + info->var.yres > info->var.yres_virtual)
return -EINVAL;
*(unsigned int *) TOP_REG = var->yoffset * info->var.xres;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Simmons | 37 | 58.73% | 1 | 33.33% |
| Linus Torvalds (pre-git) | 17 | 26.98% | 1 | 33.33% |
| Laurent Pinchart | 9 | 14.29% | 1 | 33.33% |
| Total | 63 | 100.00% | 3 | 100.00% |
/*
* 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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Simmons | 27 | 62.79% | 1 | 50.00% |
| Linus Torvalds (pre-git) | 16 | 37.21% | 1 | 50.00% |
| Total | 43 | 100.00% | 2 | 100.00% |
/*
* 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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Simmons | 60 | 70.59% | 1 | 50.00% |
| Linus Torvalds (pre-git) | 25 | 29.41% | 1 | 50.00% |
| Total | 85 | 100.00% | 2 | 100.00% |
/*
* 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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Simmons | 266 | 76.44% | 2 | 40.00% |
| Linus Torvalds (pre-git) | 66 | 18.97% | 1 | 20.00% |
| Antonino A. Daplas | 16 | 4.60% | 2 | 40.00% |
| Total | 348 | 100.00% | 5 | 100.00% |
module_init(g364fb_init);
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Simmons | 620 | 55.41% | 6 | 40.00% |
| Linus Torvalds (pre-git) | 461 | 41.20% | 3 | 20.00% |
| Antonino A. Daplas | 21 | 1.88% | 3 | 20.00% |
| Laurent Pinchart | 9 | 0.80% | 1 | 6.67% |
| Linus Torvalds | 5 | 0.45% | 1 | 6.67% |
| Ralf Bächle | 3 | 0.27% | 1 | 6.67% |
| Total | 1119 | 100.00% | 15 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.