| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds (pre-git) | 1103 | 45.88% | 13 | 20.97% |
| Antonino A. Daplas | 396 | 16.47% | 16 | 25.81% |
| James Simmons | 255 | 10.61% | 5 | 8.06% |
| Andrew Morton | 184 | 7.65% | 2 | 3.23% |
| Thomas Schlichter | 93 | 3.87% | 1 | 1.61% |
| Luis R. Rodriguez | 76 | 3.16% | 3 | 4.84% |
| David Herrmann | 74 | 3.08% | 2 | 3.23% |
| Marcin Ślusarz | 58 | 2.41% | 1 | 1.61% |
| Dave Airlie | 53 | 2.20% | 1 | 1.61% |
| Helge Deller | 25 | 1.04% | 1 | 1.61% |
| Linus Torvalds | 22 | 0.92% | 4 | 6.45% |
| Vojtech Pavlik | 19 | 0.79% | 1 | 1.61% |
| Amol Lad | 13 | 0.54% | 1 | 1.61% |
| Russell King | 10 | 0.42% | 2 | 3.23% |
| Daniel J Blueman | 8 | 0.33% | 1 | 1.61% |
| Joe Perches | 3 | 0.12% | 1 | 1.61% |
| Gerd Knorr | 3 | 0.12% | 1 | 1.61% |
| Jon Smirl | 3 | 0.12% | 1 | 1.61% |
| Piotr Kaczuba | 2 | 0.08% | 1 | 1.61% |
| Roel Kluin | 1 | 0.04% | 1 | 1.61% |
| Kai Germaschewski | 1 | 0.04% | 1 | 1.61% |
| Thomas Gleixner | 1 | 0.04% | 1 | 1.61% |
| Justin P. Mattock | 1 | 0.04% | 1 | 1.61% |
| Total | 2404 | 62 |
// SPDX-License-Identifier: GPL-2.0-only /* * framebuffer driver for VBE 2.0 compliant graphic boards * * switching to graphics mode happens at boot time (while * running in real mode, see arch/i386/boot/video.S). * * (c) 1998 Gerd Knorr <kraxel@goldbach.in-berlin.de> * */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/mm.h> #include <linux/delay.h> #include <linux/fb.h> #include <linux/ioport.h> #include <linux/init.h> #include <linux/platform_device.h> #include <linux/screen_info.h> #include <linux/io.h> #include <video/vga.h> #define dac_reg (0x3c8) #define dac_val (0x3c9) /* --------------------------------------------------------------------- */ struct vesafb_par { u32 pseudo_palette[256]; int wc_cookie; }; static struct fb_var_screeninfo vesafb_defined = { .activate = FB_ACTIVATE_NOW, .height = -1, .width = -1, .right_margin = 32, .upper_margin = 16, .lower_margin = 4, .vsync_len = 4, .vmode = FB_VMODE_NONINTERLACED, }; static struct fb_fix_screeninfo vesafb_fix = { .id = "VESA VGA", .type = FB_TYPE_PACKED_PIXELS, .accel = FB_ACCEL_NONE, }; static int inverse __read_mostly; static int mtrr __read_mostly; /* disable mtrr */ static int vram_remap; /* Set amount of memory to be used */ static int vram_total; /* Set total amount of memory */ static int pmi_setpal __read_mostly = 1; /* pmi for palette changes ??? */ static int ypan __read_mostly; /* 0..nothing, 1..ypan, 2..ywrap */ static void (*pmi_start)(void) __read_mostly; static void (*pmi_pal) (void) __read_mostly; static int depth __read_mostly; static int vga_compat __read_mostly; /* --------------------------------------------------------------------- */ static int vesafb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) { #ifdef __i386__ int offset; offset = (var->yoffset * info->fix.line_length + var->xoffset) / 4; __asm__ __volatile__( "call *(%%edi)" : /* no return value */ : "a" (0x4f07), /* EAX */ "b" (0), /* EBX */ "c" (offset), /* ECX */ "d" (offset >> 16), /* EDX */ "D" (&pmi_start)); /* EDI */ #endif return 0; } static int vesa_setpalette(int regno, unsigned red, unsigned green, unsigned blue) { int shift = 16 - depth; int err = -EINVAL; /* * Try VGA registers first... */ if (vga_compat) { outb_p(regno, dac_reg); outb_p(red >> shift, dac_val); outb_p(green >> shift, dac_val); outb_p(blue >> shift, dac_val); err = 0; } #ifdef __i386__ /* * Fallback to the PMI.... */ if (err && pmi_setpal) { struct { u_char blue, green, red, pad; } entry; entry.red = red >> shift; entry.green = green >> shift; entry.blue = blue >> shift; entry.pad = 0; __asm__ __volatile__( "call *(%%esi)" : /* no return value */ : "a" (0x4f09), /* EAX */ "b" (0), /* EBX */ "c" (1), /* ECX */ "d" (regno), /* EDX */ "D" (&entry), /* EDI */ "S" (&pmi_pal)); /* ESI */ err = 0; } #endif return err; } static int vesafb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *info) { int err = 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. */ if (regno >= info->cmap.len) return 1; if (info->var.bits_per_pixel == 8) err = vesa_setpalette(regno,red,green,blue); else if (regno < 16) { switch (info->var.bits_per_pixel) { case 16: if (info->var.red.offset == 10) { /* 1:5:5:5 */ ((u32*) (info->pseudo_palette))[regno] = ((red & 0xf800) >> 1) | ((green & 0xf800) >> 6) | ((blue & 0xf800) >> 11); } else { /* 0:5:6:5 */ ((u32*) (info->pseudo_palette))[regno] = ((red & 0xf800) ) | ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11); } break; case 24: case 32: red >>= 8; green >>= 8; blue >>= 8; ((u32 *)(info->pseudo_palette))[regno] = (red << info->var.red.offset) | (green << info->var.green.offset) | (blue << info->var.blue.offset); break; } } return err; } static void vesafb_destroy(struct fb_info *info) { struct vesafb_par *par = info->par; fb_dealloc_cmap(&info->cmap); arch_phys_wc_del(par->wc_cookie); if (info->screen_base) iounmap(info->screen_base); release_mem_region(info->apertures->ranges[0].base, info->apertures->ranges[0].size); } static struct fb_ops vesafb_ops = { .owner = THIS_MODULE, .fb_destroy = vesafb_destroy, .fb_setcolreg = vesafb_setcolreg, .fb_pan_display = vesafb_pan_display, .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, }; static int vesafb_setup(char *options) { char *this_opt; if (!options || !*options) return 0; while ((this_opt = strsep(&options, ",")) != NULL) { if (!*this_opt) continue; if (! strcmp(this_opt, "inverse")) inverse=1; else if (! strcmp(this_opt, "redraw")) ypan=0; else if (! strcmp(this_opt, "ypan")) ypan=1; else if (! strcmp(this_opt, "ywrap")) ypan=2; else if (! strcmp(this_opt, "vgapal")) pmi_setpal=0; else if (! strcmp(this_opt, "pmipal")) pmi_setpal=1; else if (! strncmp(this_opt, "mtrr:", 5)) mtrr = simple_strtoul(this_opt+5, NULL, 0); else if (! strcmp(this_opt, "nomtrr")) mtrr=0; else if (! strncmp(this_opt, "vtotal:", 7)) vram_total = simple_strtoul(this_opt+7, NULL, 0); else if (! strncmp(this_opt, "vremap:", 7)) vram_remap = simple_strtoul(this_opt+7, NULL, 0); } return 0; } static int vesafb_probe(struct platform_device *dev) { struct fb_info *info; struct vesafb_par *par; int i, err; unsigned int size_vmode; unsigned int size_remap; unsigned int size_total; char *option = NULL; /* ignore error return of fb_get_options */ fb_get_options("vesafb", &option); vesafb_setup(option); if (screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) return -ENODEV; vga_compat = (screen_info.capabilities & 2) ? 0 : 1; vesafb_fix.smem_start = screen_info.lfb_base; vesafb_defined.bits_per_pixel = screen_info.lfb_depth; if (15 == vesafb_defined.bits_per_pixel) vesafb_defined.bits_per_pixel = 16; vesafb_defined.xres = screen_info.lfb_width; vesafb_defined.yres = screen_info.lfb_height; vesafb_fix.line_length = screen_info.lfb_linelength; vesafb_fix.visual = (vesafb_defined.bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; /* size_vmode -- that is the amount of memory needed for the * used video mode, i.e. the minimum amount of * memory we need. */ size_vmode = vesafb_defined.yres * vesafb_fix.line_length; /* size_total -- all video memory we have. Used for mtrr * entries, resource allocation and bounds * checking. */ size_total = screen_info.lfb_size * 65536; if (vram_total) size_total = vram_total * 1024 * 1024; if (size_total < size_vmode) size_total = size_vmode; /* size_remap -- the amount of video memory we are going to * use for vesafb. With modern cards it is no * option to simply use size_total as that * wastes plenty of kernel address space. */ size_remap = size_vmode * 2; if (vram_remap) size_remap = vram_remap * 1024 * 1024; if (size_remap < size_vmode) size_remap = size_vmode; if (size_remap > size_total) size_remap = size_total; vesafb_fix.smem_len = size_remap; #ifndef __i386__ screen_info.vesapm_seg = 0; #endif if (!request_mem_region(vesafb_fix.smem_start, size_total, "vesafb")) { printk(KERN_WARNING "vesafb: cannot reserve video memory at 0x%lx\n", vesafb_fix.smem_start); /* We cannot make this fatal. Sometimes this comes from magic spaces our resource handlers simply don't know about */ } info = framebuffer_alloc(sizeof(struct vesafb_par), &dev->dev); if (!info) { release_mem_region(vesafb_fix.smem_start, size_total); return -ENOMEM; } platform_set_drvdata(dev, info); par = info->par; info->pseudo_palette = par->pseudo_palette; /* set vesafb aperture size for generic probing */ info->apertures = alloc_apertures(1); if (!info->apertures) { err = -ENOMEM; goto err; } info->apertures->ranges[0].base = screen_info.lfb_base; info->apertures->ranges[0].size = size_total; printk(KERN_INFO "vesafb: mode is %dx%dx%d, linelength=%d, pages=%d\n", vesafb_defined.xres, vesafb_defined.yres, vesafb_defined.bits_per_pixel, vesafb_fix.line_length, screen_info.pages); if (screen_info.vesapm_seg) { printk(KERN_INFO "vesafb: protected mode interface info at %04x:%04x\n", screen_info.vesapm_seg,screen_info.vesapm_off); } if (screen_info.vesapm_seg < 0xc000) ypan = pmi_setpal = 0; /* not available or some DOS TSR ... */ if (ypan || pmi_setpal) { unsigned short *pmi_base; pmi_base = (unsigned short*)phys_to_virt(((unsigned long)screen_info.vesapm_seg << 4) + screen_info.vesapm_off); pmi_start = (void*)((char*)pmi_base + pmi_base[1]); pmi_pal = (void*)((char*)pmi_base + pmi_base[2]); printk(KERN_INFO "vesafb: pmi: set display start = %p, set palette = %p\n",pmi_start,pmi_pal); if (pmi_base[3]) { printk(KERN_INFO "vesafb: pmi: ports = "); for (i = pmi_base[3]/2; pmi_base[i] != 0xffff; i++) printk("%x ", pmi_base[i]); printk("\n"); if (pmi_base[i] != 0xffff) { /* * memory areas not supported (yet?) * * Rules are: we have to set up a descriptor for the requested * memory area and pass it in the ES register to the BIOS function. */ printk(KERN_INFO "vesafb: can't handle memory requests, pmi disabled\n"); ypan = pmi_setpal = 0; } } } if (vesafb_defined.bits_per_pixel == 8 && !pmi_setpal && !vga_compat) { printk(KERN_WARNING "vesafb: hardware palette is unchangeable,\n" " colors may be incorrect\n"); vesafb_fix.visual = FB_VISUAL_STATIC_PSEUDOCOLOR; } vesafb_defined.xres_virtual = vesafb_defined.xres; vesafb_defined.yres_virtual = vesafb_fix.smem_len / vesafb_fix.line_length; if (ypan && vesafb_defined.yres_virtual > vesafb_defined.yres) { printk(KERN_INFO "vesafb: scrolling: %s using protected mode interface, yres_virtual=%d\n", (ypan > 1) ? "ywrap" : "ypan",vesafb_defined.yres_virtual); } else { printk(KERN_INFO "vesafb: scrolling: redraw\n"); vesafb_defined.yres_virtual = vesafb_defined.yres; ypan = 0; } /* some dummy values for timing to make fbset happy */ vesafb_defined.pixclock = 10000000 / vesafb_defined.xres * 1000 / vesafb_defined.yres; vesafb_defined.left_margin = (vesafb_defined.xres / 8) & 0xf8; vesafb_defined.hsync_len = (vesafb_defined.xres / 8) & 0xf8; vesafb_defined.red.offset = screen_info.red_pos; vesafb_defined.red.length = screen_info.red_size; vesafb_defined.green.offset = screen_info.green_pos; vesafb_defined.green.length = screen_info.green_size; vesafb_defined.blue.offset = screen_info.blue_pos; vesafb_defined.blue.length = screen_info.blue_size; vesafb_defined.transp.offset = screen_info.rsvd_pos; vesafb_defined.transp.length = screen_info.rsvd_size; if (vesafb_defined.bits_per_pixel <= 8) { depth = vesafb_defined.green.length; vesafb_defined.red.length = vesafb_defined.green.length = vesafb_defined.blue.length = vesafb_defined.bits_per_pixel; } printk(KERN_INFO "vesafb: %s: " "size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n", (vesafb_defined.bits_per_pixel > 8) ? "Truecolor" : (vga_compat || pmi_setpal) ? "Pseudocolor" : "Static Pseudocolor", screen_info.rsvd_size, screen_info.red_size, screen_info.green_size, screen_info.blue_size, screen_info.rsvd_pos, screen_info.red_pos, screen_info.green_pos, screen_info.blue_pos); vesafb_fix.ypanstep = ypan ? 1 : 0; vesafb_fix.ywrapstep = (ypan>1) ? 1 : 0; /* request failure does not faze us, as vgacon probably has this * region already (FIXME) */ request_region(0x3c0, 32, "vesafb"); if (mtrr == 3) { unsigned int temp_size = size_total; /* Find the largest power-of-two */ temp_size = roundup_pow_of_two(temp_size); /* Try and find a power of two to add */ do { par->wc_cookie = arch_phys_wc_add(vesafb_fix.smem_start, temp_size); temp_size >>= 1; } while (temp_size >= PAGE_SIZE && par->wc_cookie < 0); info->screen_base = ioremap_wc(vesafb_fix.smem_start, vesafb_fix.smem_len); } else { if (mtrr && mtrr != 3) WARN_ONCE(1, "Only MTRR_TYPE_WRCOMB (3) make sense\n"); info->screen_base = ioremap(vesafb_fix.smem_start, vesafb_fix.smem_len); } if (!info->screen_base) { printk(KERN_ERR "vesafb: abort, cannot ioremap video memory 0x%x @ 0x%lx\n", vesafb_fix.smem_len, vesafb_fix.smem_start); err = -EIO; goto err; } printk(KERN_INFO "vesafb: framebuffer at 0x%lx, mapped to 0x%p, " "using %dk, total %dk\n", vesafb_fix.smem_start, info->screen_base, size_remap/1024, size_total/1024); info->fbops = &vesafb_ops; info->var = vesafb_defined; info->fix = vesafb_fix; info->flags = FBINFO_FLAG_DEFAULT | FBINFO_MISC_FIRMWARE | (ypan ? FBINFO_HWACCEL_YPAN : 0); if (!ypan) info->fbops->fb_pan_display = NULL; if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) { err = -ENOMEM; goto err; } if (register_framebuffer(info)<0) { err = -EINVAL; fb_dealloc_cmap(&info->cmap); goto err; } fb_info(info, "%s frame buffer device\n", info->fix.id); return 0; err: arch_phys_wc_del(par->wc_cookie); if (info->screen_base) iounmap(info->screen_base); framebuffer_release(info); release_mem_region(vesafb_fix.smem_start, size_total); return err; } static int vesafb_remove(struct platform_device *pdev) { struct fb_info *info = platform_get_drvdata(pdev); unregister_framebuffer(info); framebuffer_release(info); return 0; } static struct platform_driver vesafb_driver = { .driver = { .name = "vesa-framebuffer", }, .probe = vesafb_probe, .remove = vesafb_remove, }; module_platform_driver(vesafb_driver); MODULE_LICENSE("GPL");
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