diff options
author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-02-13 15:31:38 +0200 |
---|---|---|
committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-04-17 08:10:19 +0300 |
commit | f7018c21350204c4cf628462f229d44d03545254 (patch) | |
tree | 408787177164cf51cc06f7aabdb04fcff8d2b6aa /drivers/video/vesafb.c | |
parent | c26ef3eb3c11274bad1b64498d0a134f85755250 (diff) | |
download | linux-f7018c21350204c4cf628462f229d44d03545254.tar.bz2 |
video: move fbdev to drivers/video/fbdev
The drivers/video directory is a mess. It contains generic video related
files, directories for backlight, console, linux logo, lots of fbdev
device drivers, fbdev framework files.
Make some order into the chaos by creating drivers/video/fbdev
directory, and move all fbdev related files there.
No functionality is changed, although I guess it is possible that some
subtle Makefile build order related issue could be created by this
patch.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/video/vesafb.c')
-rw-r--r-- | drivers/video/vesafb.c | 522 |
1 files changed, 0 insertions, 522 deletions
diff --git a/drivers/video/vesafb.c b/drivers/video/vesafb.c deleted file mode 100644 index 6170e7f58640..000000000000 --- a/drivers/video/vesafb.c +++ /dev/null @@ -1,522 +0,0 @@ -/* - * 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 <video/vga.h> -#include <asm/io.h> -#include <asm/mtrr.h> - -#define dac_reg (0x3c8) -#define dac_val (0x3c9) - -/* --------------------------------------------------------------------- */ - -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) -{ - fb_dealloc_cmap(&info->cmap); - 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; - 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(u32) * 256, &dev->dev); - if (!info) { - release_mem_region(vesafb_fix.smem_start, size_total); - return -ENOMEM; - } - platform_set_drvdata(dev, info); - info->pseudo_palette = info->par; - info->par = NULL; - - /* 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"); - -#ifdef CONFIG_MTRR - if (mtrr) { - unsigned int temp_size = size_total; - unsigned int type = 0; - - switch (mtrr) { - case 1: - type = MTRR_TYPE_UNCACHABLE; - break; - case 2: - type = MTRR_TYPE_WRBACK; - break; - case 3: - type = MTRR_TYPE_WRCOMB; - break; - case 4: - type = MTRR_TYPE_WRTHROUGH; - break; - default: - type = 0; - break; - } - - if (type) { - int rc; - - /* Find the largest power-of-two */ - temp_size = roundup_pow_of_two(temp_size); - - /* Try and find a power of two to add */ - do { - rc = mtrr_add(vesafb_fix.smem_start, temp_size, - type, 1); - temp_size >>= 1; - } while (temp_size >= PAGE_SIZE && rc == -EINVAL); - } - } -#endif - - switch (mtrr) { - case 1: /* uncachable */ - info->screen_base = ioremap_nocache(vesafb_fix.smem_start, vesafb_fix.smem_len); - break; - case 2: /* write-back */ - info->screen_base = ioremap_cache(vesafb_fix.smem_start, vesafb_fix.smem_len); - break; - case 3: /* write-combining */ - info->screen_base = ioremap_wc(vesafb_fix.smem_start, vesafb_fix.smem_len); - break; - case 4: /* write-through */ - default: - info->screen_base = ioremap(vesafb_fix.smem_start, vesafb_fix.smem_len); - break; - } - 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: - 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", - .owner = THIS_MODULE, - }, - .probe = vesafb_probe, - .remove = vesafb_remove, -}; - -module_platform_driver(vesafb_driver); -MODULE_LICENSE("GPL"); |