| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds (pre-git) | 528 | 45.60% | 3 | 15.00% |
| James Simmons | 365 | 31.52% | 5 | 25.00% |
| Andrew Morton | 181 | 15.63% | 1 | 5.00% |
| Geert Uytterhoeven | 48 | 4.15% | 3 | 15.00% |
| Antonino A. Daplas | 19 | 1.64% | 3 | 15.00% |
| Amol Lad | 7 | 0.60% | 1 | 5.00% |
| Linus Torvalds | 5 | 0.43% | 1 | 5.00% |
| Joe Perches | 3 | 0.26% | 1 | 5.00% |
| Arvind Yadav | 1 | 0.09% | 1 | 5.00% |
| Lucas De Marchi | 1 | 0.09% | 1 | 5.00% |
| Total | 1158 | 20 |
/* * linux/drivers/video/fm2fb.c -- BSC FrameMaster II/Rainbow II frame buffer * device * * Copyright (C) 1998 Steffen A. Mork (linux-dev@morknet.de) * Copyright (C) 1999 Geert Uytterhoeven * * Written for 2.0.x by Steffen A. Mork * Ported to 2.1.x by Geert Uytterhoeven * Ported to new api by James Simmons * * 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/mm.h> #include <linux/fb.h> #include <linux/init.h> #include <linux/zorro.h> #include <asm/io.h> /* * Some technical notes: * * The BSC FrameMaster II (or Rainbow II) is a simple very dumb * frame buffer which allows to display 24 bit true color images. * Each pixel is 32 bit width so it's very easy to maintain the * frame buffer. One long word has the following layout: * AARRGGBB which means: AA the alpha channel byte, RR the red * channel, GG the green channel and BB the blue channel. * * The FrameMaster II supports the following video modes. * - PAL/NTSC * - interlaced/non interlaced * - composite sync/sync/sync over green * * The resolution is to the following both ones: * - 768x576 (PAL) * - 768x480 (NTSC) * * This means that pixel access per line is fixed due to the * fixed line width. In case of maximal resolution the frame * buffer needs an amount of memory of 1.769.472 bytes which * is near to 2 MByte (the allocated address space of Zorro2). * The memory is channel interleaved. That means every channel * owns four VRAMs. Unfortunately most FrameMasters II are * not assembled with memory for the alpha channel. In this * case it could be possible to add the frame buffer into the * normal memory pool. * * At relative address 0x1ffff8 of the frame buffers base address * there exists a control register with the number of * four control bits. They have the following meaning: * bit value meaning * * 0 1 0=interlaced/1=non interlaced * 1 2 0=video out disabled/1=video out enabled * 2 4 0=normal mode as jumpered via JP8/1=complement mode * 3 8 0=read onboard ROM/1 normal operation (required) * * As mentioned above there are several jumper. I think there * is not very much information about the FrameMaster II in * the world so I add these information for completeness. * * JP1 interlace selection (1-2 non interlaced/2-3 interlaced) * JP2 wait state creation (leave as is!) * JP3 wait state creation (leave as is!) * JP4 modulate composite sync on green output (1-2 composite * sync on green channel/2-3 normal composite sync) * JP5 create test signal, shorting this jumper will create * a white screen * JP6 sync creation (1-2 composite sync/2-3 H-sync output) * JP8 video mode (1-2 PAL/2-3 NTSC) * * With the following jumpering table you can connect the * FrameMaster II to a normal TV via SCART connector: * JP1: 2-3 * JP4: 2-3 * JP6: 2-3 * JP8: 1-2 (means PAL for Europe) * * NOTE: * There is no other possibility to change the video timings * except the interlaced/non interlaced, sync control and the * video mode PAL (50 Hz)/NTSC (60 Hz). Inside this * FrameMaster II driver are assumed values to avoid anomalies * to a future X server. Except the pixel clock is really * constant at 30 MHz. * * 9 pin female video connector: * * 1 analog red 0.7 Vss * 2 analog green 0.7 Vss * 3 analog blue 0.7 Vss * 4 H-sync TTL * 5 V-sync TTL * 6 ground * 7 ground * 8 ground * 9 ground * * Some performance notes: * The FrameMaster II was not designed to display a console * this driver would do! It was designed to display still true * color images. Imagine: When scroll up a text line there * must copied ca. 1.7 MBytes to another place inside this * frame buffer. This means 1.7 MByte read and 1.7 MByte write * over the slow 16 bit wide Zorro2 bus! A scroll of one * line needs 1 second so do not expect to much from this * driver - he is at the limit! * */ /* * definitions */ #define FRAMEMASTER_SIZE 0x200000 #define FRAMEMASTER_REG 0x1ffff8 #define FRAMEMASTER_NOLACE 1 #define FRAMEMASTER_ENABLE 2 #define FRAMEMASTER_COMPL 4 #define FRAMEMASTER_ROM 8 static volatile unsigned char *fm2fb_reg; static struct fb_fix_screeninfo fb_fix = { .smem_len = FRAMEMASTER_REG, .type = FB_TYPE_PACKED_PIXELS, .visual = FB_VISUAL_TRUECOLOR, .line_length = (768 << 2), .mmio_len = (8), .accel = FB_ACCEL_NONE, }; static int fm2fb_mode = -1; #define FM2FB_MODE_PAL 0 #define FM2FB_MODE_NTSC 1 static struct fb_var_screeninfo fb_var_modes[] = { { /* 768 x 576, 32 bpp (PAL) */ 768, 576, 768, 576, 0, 0, 32, 0, { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 8, 0 }, 0, FB_ACTIVATE_NOW, -1, -1, FB_ACCEL_NONE, 33333, 10, 102, 10, 5, 80, 34, FB_SYNC_COMP_HIGH_ACT, 0 }, { /* 768 x 480, 32 bpp (NTSC - not supported yet */ 768, 480, 768, 480, 0, 0, 32, 0, { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 8, 0 }, 0, FB_ACTIVATE_NOW, -1, -1, FB_ACCEL_NONE, 33333, 10, 102, 10, 5, 80, 34, FB_SYNC_COMP_HIGH_ACT, 0 } }; /* * Interface used by the world */ static int fm2fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int transp, struct fb_info *info); static int fm2fb_blank(int blank, struct fb_info *info); static struct fb_ops fm2fb_ops = { .owner = THIS_MODULE, .fb_setcolreg = fm2fb_setcolreg, .fb_blank = fm2fb_blank, .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, }; /* * Blank the display. */ static int fm2fb_blank(int blank, struct fb_info *info) { unsigned char t = FRAMEMASTER_ROM; if (!blank) t |= FRAMEMASTER_ENABLE | FRAMEMASTER_NOLACE; fm2fb_reg[0] = t; return 0; } /* * Set a single color register. The values supplied are already * rounded down to the hardware's capabilities (according to the * entries in the var structure). Return != 0 for invalid regno. */ static int fm2fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int transp, struct fb_info *info) { if (regno < 16) { red >>= 8; green >>= 8; blue >>= 8; ((u32*)(info->pseudo_palette))[regno] = (red << 16) | (green << 8) | blue; } return 0; } /* * Initialisation */ static int fm2fb_probe(struct zorro_dev *z, const struct zorro_device_id *id); static const struct zorro_device_id fm2fb_devices[] = { { ZORRO_PROD_BSC_FRAMEMASTER_II }, { ZORRO_PROD_HELFRICH_RAINBOW_II }, { 0 } }; MODULE_DEVICE_TABLE(zorro, fm2fb_devices); static struct zorro_driver fm2fb_driver = { .name = "fm2fb", .id_table = fm2fb_devices, .probe = fm2fb_probe, }; static int fm2fb_probe(struct zorro_dev *z, const struct zorro_device_id *id) { struct fb_info *info; unsigned long *ptr; int is_fm; int x, y; is_fm = z->id == ZORRO_PROD_BSC_FRAMEMASTER_II; if (!zorro_request_device(z,"fm2fb")) return -ENXIO; info = framebuffer_alloc(16 * sizeof(u32), &z->dev); if (!info) { zorro_release_device(z); return -ENOMEM; } if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) { framebuffer_release(info); zorro_release_device(z); return -ENOMEM; } /* assigning memory to kernel space */ fb_fix.smem_start = zorro_resource_start(z); info->screen_base = ioremap(fb_fix.smem_start, FRAMEMASTER_SIZE); fb_fix.mmio_start = fb_fix.smem_start + FRAMEMASTER_REG; fm2fb_reg = (unsigned char *)(info->screen_base+FRAMEMASTER_REG); strcpy(fb_fix.id, is_fm ? "FrameMaster II" : "Rainbow II"); /* make EBU color bars on display */ ptr = (unsigned long *)fb_fix.smem_start; for (y = 0; y < 576; y++) { for (x = 0; x < 96; x++) *ptr++ = 0xffffff;/* white */ for (x = 0; x < 96; x++) *ptr++ = 0xffff00;/* yellow */ for (x = 0; x < 96; x++) *ptr++ = 0x00ffff;/* cyan */ for (x = 0; x < 96; x++) *ptr++ = 0x00ff00;/* green */ for (x = 0; x < 96; x++) *ptr++ = 0xff00ff;/* magenta */ for (x = 0; x < 96; x++) *ptr++ = 0xff0000;/* red */ for (x = 0; x < 96; x++) *ptr++ = 0x0000ff;/* blue */ for (x = 0; x < 96; x++) *ptr++ = 0x000000;/* black */ } fm2fb_blank(0, info); if (fm2fb_mode == -1) fm2fb_mode = FM2FB_MODE_PAL; info->fbops = &fm2fb_ops; info->var = fb_var_modes[fm2fb_mode]; info->pseudo_palette = info->par; info->par = NULL; info->fix = fb_fix; info->flags = FBINFO_DEFAULT; if (register_framebuffer(info) < 0) { fb_dealloc_cmap(&info->cmap); iounmap(info->screen_base); framebuffer_release(info); zorro_release_device(z); return -EINVAL; } fb_info(info, "%s frame buffer device\n", fb_fix.id); return 0; } int __init fm2fb_setup(char *options) { char *this_opt; if (!options || !*options) return 0; while ((this_opt = strsep(&options, ",")) != NULL) { if (!strncmp(this_opt, "pal", 3)) fm2fb_mode = FM2FB_MODE_PAL; else if (!strncmp(this_opt, "ntsc", 4)) fm2fb_mode = FM2FB_MODE_NTSC; } return 0; } int __init fm2fb_init(void) { char *option = NULL; if (fb_get_options("fm2fb", &option)) return -ENODEV; fm2fb_setup(option); return zorro_register_driver(&fm2fb_driver); } module_init(fm2fb_init); MODULE_LICENSE("GPL");
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