From 19757fc8432ac97a07a890d6310cccc1896a1b36 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Thu, 13 Feb 2014 16:24:55 +0200 Subject: fbdev: move fbdev core files to separate directory Instead of having fbdev framework core files at the root fbdev directory, mixed with random fbdev device drivers, move the fbdev core files to a separate core directory. This makes it much clearer which of the files are actually part of the fbdev framework, and which are part of device drivers. Signed-off-by: Tomi Valkeinen Acked-by: Laurent Pinchart Acked-by: Geert Uytterhoeven Acked-by: Rob Clark Acked-by: Jingoo Han Acked-by: Daniel Vetter diff --git a/Documentation/DocBook/device-drivers.tmpl b/Documentation/DocBook/device-drivers.tmpl index 4d1aa8b..cc63f30 100644 --- a/Documentation/DocBook/device-drivers.tmpl +++ b/Documentation/DocBook/device-drivers.tmpl @@ -276,7 +276,7 @@ X!Isound/sound_firmware.c Frame Buffer Memory -!Edrivers/video/fbdev/fbmem.c +!Edrivers/video/fbdev/core/fbmem.c Frame Buffer Colormap -!Edrivers/video/fbdev/fbcmap.c +!Edrivers/video/fbdev/core/fbcmap.c Frame Buffer Video Mode Database -!Idrivers/video/fbdev/modedb.c -!Edrivers/video/fbdev/modedb.c +!Idrivers/video/fbdev/core/modedb.c +!Edrivers/video/fbdev/core/modedb.c Frame Buffer Macintosh Video Mode Database !Edrivers/video/fbdev/macmodes.c diff --git a/drivers/video/fbdev/Makefile b/drivers/video/fbdev/Makefile index 8a79eec..0284f2a 100644 --- a/drivers/video/fbdev/Makefile +++ b/drivers/video/fbdev/Makefile @@ -4,25 +4,11 @@ # Each configuration option enables a list of files. -obj-y += fb_notify.o -obj-$(CONFIG_FB) += fb.o -fb-y := fbmem.o fbmon.o fbcmap.o fbsysfs.o \ - modedb.o fbcvt.o -fb-objs := $(fb-y) +obj-y += core/ obj-$(CONFIG_EXYNOS_VIDEO) += exynos/ -obj-$(CONFIG_FB_CFB_FILLRECT) += cfbfillrect.o -obj-$(CONFIG_FB_CFB_COPYAREA) += cfbcopyarea.o -obj-$(CONFIG_FB_CFB_IMAGEBLIT) += cfbimgblt.o -obj-$(CONFIG_FB_SYS_FILLRECT) += sysfillrect.o -obj-$(CONFIG_FB_SYS_COPYAREA) += syscopyarea.o -obj-$(CONFIG_FB_SYS_IMAGEBLIT) += sysimgblt.o -obj-$(CONFIG_FB_SYS_FOPS) += fb_sys_fops.o -obj-$(CONFIG_FB_SVGALIB) += svgalib.o obj-$(CONFIG_FB_MACMODES) += macmodes.o -obj-$(CONFIG_FB_DDC) += fb_ddc.o -obj-$(CONFIG_FB_DEFERRED_IO) += fb_defio.o obj-$(CONFIG_FB_WMT_GE_ROPS) += wmt_ge_rops.o # Hardware specific drivers go first diff --git a/drivers/video/fbdev/aty/mach64_cursor.c b/drivers/video/fbdev/aty/mach64_cursor.c index 0fe02e2..2fa0317 100644 --- a/drivers/video/fbdev/aty/mach64_cursor.c +++ b/drivers/video/fbdev/aty/mach64_cursor.c @@ -5,7 +5,7 @@ #include #include #include -#include "../fb_draw.h" +#include "../core/fb_draw.h" #include diff --git a/drivers/video/fbdev/cfbcopyarea.c b/drivers/video/fbdev/cfbcopyarea.c deleted file mode 100644 index bcb5723..0000000 --- a/drivers/video/fbdev/cfbcopyarea.c +++ /dev/null @@ -1,434 +0,0 @@ -/* - * Generic function for frame buffer with packed pixels of any depth. - * - * Copyright (C) 1999-2005 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. - * - * NOTES: - * - * This is for cfb packed pixels. Iplan and such are incorporated in the - * drivers that need them. - * - * FIXME - * - * Also need to add code to deal with cards endians that are different than - * the native cpu endians. I also need to deal with MSB position in the word. - * - * The two functions or copying forward and backward could be split up like - * the ones for filling, i.e. in aligned and unaligned versions. This would - * help moving some redundant computations and branches out of the loop, too. - */ - -#include -#include -#include -#include -#include -#include -#include "fb_draw.h" - -#if BITS_PER_LONG == 32 -# define FB_WRITEL fb_writel -# define FB_READL fb_readl -#else -# define FB_WRITEL fb_writeq -# define FB_READL fb_readq -#endif - - /* - * Generic bitwise copy algorithm - */ - -static void -bitcpy(struct fb_info *p, unsigned long __iomem *dst, unsigned dst_idx, - const unsigned long __iomem *src, unsigned src_idx, int bits, - unsigned n, u32 bswapmask) -{ - unsigned long first, last; - int const shift = dst_idx-src_idx; - -#if 0 - /* - * If you suspect bug in this function, compare it with this simple - * memmove implementation. - */ - fb_memmove((char *)dst + ((dst_idx & (bits - 1))) / 8, - (char *)src + ((src_idx & (bits - 1))) / 8, n / 8); - return; -#endif - - first = fb_shifted_pixels_mask_long(p, dst_idx, bswapmask); - last = ~fb_shifted_pixels_mask_long(p, (dst_idx+n) % bits, bswapmask); - - if (!shift) { - // Same alignment for source and dest - - if (dst_idx+n <= bits) { - // Single word - if (last) - first &= last; - FB_WRITEL( comp( FB_READL(src), FB_READL(dst), first), dst); - } else { - // Multiple destination words - - // Leading bits - if (first != ~0UL) { - FB_WRITEL( comp( FB_READL(src), FB_READL(dst), first), dst); - dst++; - src++; - n -= bits - dst_idx; - } - - // Main chunk - n /= bits; - while (n >= 8) { - FB_WRITEL(FB_READL(src++), dst++); - FB_WRITEL(FB_READL(src++), dst++); - FB_WRITEL(FB_READL(src++), dst++); - FB_WRITEL(FB_READL(src++), dst++); - FB_WRITEL(FB_READL(src++), dst++); - FB_WRITEL(FB_READL(src++), dst++); - FB_WRITEL(FB_READL(src++), dst++); - FB_WRITEL(FB_READL(src++), dst++); - n -= 8; - } - while (n--) - FB_WRITEL(FB_READL(src++), dst++); - - // Trailing bits - if (last) - FB_WRITEL( comp( FB_READL(src), FB_READL(dst), last), dst); - } - } else { - /* Different alignment for source and dest */ - unsigned long d0, d1; - int m; - - int const left = shift & (bits - 1); - int const right = -shift & (bits - 1); - - if (dst_idx+n <= bits) { - // Single destination word - if (last) - first &= last; - d0 = FB_READL(src); - d0 = fb_rev_pixels_in_long(d0, bswapmask); - if (shift > 0) { - // Single source word - d0 <<= left; - } else if (src_idx+n <= bits) { - // Single source word - d0 >>= right; - } else { - // 2 source words - d1 = FB_READL(src + 1); - d1 = fb_rev_pixels_in_long(d1, bswapmask); - d0 = d0 >> right | d1 << left; - } - d0 = fb_rev_pixels_in_long(d0, bswapmask); - FB_WRITEL(comp(d0, FB_READL(dst), first), dst); - } else { - // Multiple destination words - /** We must always remember the last value read, because in case - SRC and DST overlap bitwise (e.g. when moving just one pixel in - 1bpp), we always collect one full long for DST and that might - overlap with the current long from SRC. We store this value in - 'd0'. */ - d0 = FB_READL(src++); - d0 = fb_rev_pixels_in_long(d0, bswapmask); - // Leading bits - if (shift > 0) { - // Single source word - d1 = d0; - d0 <<= left; - n -= bits - dst_idx; - } else { - // 2 source words - d1 = FB_READL(src++); - d1 = fb_rev_pixels_in_long(d1, bswapmask); - - d0 = d0 >> right | d1 << left; - n -= bits - dst_idx; - } - d0 = fb_rev_pixels_in_long(d0, bswapmask); - FB_WRITEL(comp(d0, FB_READL(dst), first), dst); - d0 = d1; - dst++; - - // Main chunk - m = n % bits; - n /= bits; - while ((n >= 4) && !bswapmask) { - d1 = FB_READL(src++); - FB_WRITEL(d0 >> right | d1 << left, dst++); - d0 = d1; - d1 = FB_READL(src++); - FB_WRITEL(d0 >> right | d1 << left, dst++); - d0 = d1; - d1 = FB_READL(src++); - FB_WRITEL(d0 >> right | d1 << left, dst++); - d0 = d1; - d1 = FB_READL(src++); - FB_WRITEL(d0 >> right | d1 << left, dst++); - d0 = d1; - n -= 4; - } - while (n--) { - d1 = FB_READL(src++); - d1 = fb_rev_pixels_in_long(d1, bswapmask); - d0 = d0 >> right | d1 << left; - d0 = fb_rev_pixels_in_long(d0, bswapmask); - FB_WRITEL(d0, dst++); - d0 = d1; - } - - // Trailing bits - if (m) { - if (m <= bits - right) { - // Single source word - d0 >>= right; - } else { - // 2 source words - d1 = FB_READL(src); - d1 = fb_rev_pixels_in_long(d1, - bswapmask); - d0 = d0 >> right | d1 << left; - } - d0 = fb_rev_pixels_in_long(d0, bswapmask); - FB_WRITEL(comp(d0, FB_READL(dst), last), dst); - } - } - } -} - - /* - * Generic bitwise copy algorithm, operating backward - */ - -static void -bitcpy_rev(struct fb_info *p, unsigned long __iomem *dst, unsigned dst_idx, - const unsigned long __iomem *src, unsigned src_idx, int bits, - unsigned n, u32 bswapmask) -{ - unsigned long first, last; - int shift; - -#if 0 - /* - * If you suspect bug in this function, compare it with this simple - * memmove implementation. - */ - fb_memmove((char *)dst + ((dst_idx & (bits - 1))) / 8, - (char *)src + ((src_idx & (bits - 1))) / 8, n / 8); - return; -#endif - - dst += (dst_idx + n - 1) / bits; - src += (src_idx + n - 1) / bits; - dst_idx = (dst_idx + n - 1) % bits; - src_idx = (src_idx + n - 1) % bits; - - shift = dst_idx-src_idx; - - first = ~fb_shifted_pixels_mask_long(p, (dst_idx + 1) % bits, bswapmask); - last = fb_shifted_pixels_mask_long(p, (bits + dst_idx + 1 - n) % bits, bswapmask); - - if (!shift) { - // Same alignment for source and dest - - if ((unsigned long)dst_idx+1 >= n) { - // Single word - if (first) - last &= first; - FB_WRITEL( comp( FB_READL(src), FB_READL(dst), last), dst); - } else { - // Multiple destination words - - // Leading bits - if (first) { - FB_WRITEL( comp( FB_READL(src), FB_READL(dst), first), dst); - dst--; - src--; - n -= dst_idx+1; - } - - // Main chunk - n /= bits; - while (n >= 8) { - FB_WRITEL(FB_READL(src--), dst--); - FB_WRITEL(FB_READL(src--), dst--); - FB_WRITEL(FB_READL(src--), dst--); - FB_WRITEL(FB_READL(src--), dst--); - FB_WRITEL(FB_READL(src--), dst--); - FB_WRITEL(FB_READL(src--), dst--); - FB_WRITEL(FB_READL(src--), dst--); - FB_WRITEL(FB_READL(src--), dst--); - n -= 8; - } - while (n--) - FB_WRITEL(FB_READL(src--), dst--); - - // Trailing bits - if (last != -1UL) - FB_WRITEL( comp( FB_READL(src), FB_READL(dst), last), dst); - } - } else { - // Different alignment for source and dest - unsigned long d0, d1; - int m; - - int const left = shift & (bits-1); - int const right = -shift & (bits-1); - - if ((unsigned long)dst_idx+1 >= n) { - // Single destination word - if (first) - last &= first; - d0 = FB_READL(src); - if (shift < 0) { - // Single source word - d0 >>= right; - } else if (1+(unsigned long)src_idx >= n) { - // Single source word - d0 <<= left; - } else { - // 2 source words - d1 = FB_READL(src - 1); - d1 = fb_rev_pixels_in_long(d1, bswapmask); - d0 = d0 << left | d1 >> right; - } - d0 = fb_rev_pixels_in_long(d0, bswapmask); - FB_WRITEL(comp(d0, FB_READL(dst), last), dst); - } else { - // Multiple destination words - /** We must always remember the last value read, because in case - SRC and DST overlap bitwise (e.g. when moving just one pixel in - 1bpp), we always collect one full long for DST and that might - overlap with the current long from SRC. We store this value in - 'd0'. */ - - d0 = FB_READL(src--); - d0 = fb_rev_pixels_in_long(d0, bswapmask); - // Leading bits - if (shift < 0) { - // Single source word - d1 = d0; - d0 >>= right; - } else { - // 2 source words - d1 = FB_READL(src--); - d1 = fb_rev_pixels_in_long(d1, bswapmask); - d0 = d0 << left | d1 >> right; - } - d0 = fb_rev_pixels_in_long(d0, bswapmask); - FB_WRITEL(comp(d0, FB_READL(dst), first), dst); - d0 = d1; - dst--; - n -= dst_idx+1; - - // Main chunk - m = n % bits; - n /= bits; - while ((n >= 4) && !bswapmask) { - d1 = FB_READL(src--); - FB_WRITEL(d0 << left | d1 >> right, dst--); - d0 = d1; - d1 = FB_READL(src--); - FB_WRITEL(d0 << left | d1 >> right, dst--); - d0 = d1; - d1 = FB_READL(src--); - FB_WRITEL(d0 << left | d1 >> right, dst--); - d0 = d1; - d1 = FB_READL(src--); - FB_WRITEL(d0 << left | d1 >> right, dst--); - d0 = d1; - n -= 4; - } - while (n--) { - d1 = FB_READL(src--); - d1 = fb_rev_pixels_in_long(d1, bswapmask); - d0 = d0 << left | d1 >> right; - d0 = fb_rev_pixels_in_long(d0, bswapmask); - FB_WRITEL(d0, dst--); - d0 = d1; - } - - // Trailing bits - if (m) { - if (m <= bits - left) { - // Single source word - d0 <<= left; - } else { - // 2 source words - d1 = FB_READL(src); - d1 = fb_rev_pixels_in_long(d1, - bswapmask); - d0 = d0 << left | d1 >> right; - } - d0 = fb_rev_pixels_in_long(d0, bswapmask); - FB_WRITEL(comp(d0, FB_READL(dst), last), dst); - } - } - } -} - -void cfb_copyarea(struct fb_info *p, const struct fb_copyarea *area) -{ - u32 dx = area->dx, dy = area->dy, sx = area->sx, sy = area->sy; - u32 height = area->height, width = area->width; - unsigned long const bits_per_line = p->fix.line_length*8u; - unsigned long __iomem *base = NULL; - int bits = BITS_PER_LONG, bytes = bits >> 3; - unsigned dst_idx = 0, src_idx = 0, rev_copy = 0; - u32 bswapmask = fb_compute_bswapmask(p); - - if (p->state != FBINFO_STATE_RUNNING) - return; - - /* if the beginning of the target area might overlap with the end of - the source area, be have to copy the area reverse. */ - if ((dy == sy && dx > sx) || (dy > sy)) { - dy += height; - sy += height; - rev_copy = 1; - } - - // split the base of the framebuffer into a long-aligned address and the - // index of the first bit - base = (unsigned long __iomem *)((unsigned long)p->screen_base & ~(bytes-1)); - dst_idx = src_idx = 8*((unsigned long)p->screen_base & (bytes-1)); - // add offset of source and target area - dst_idx += dy*bits_per_line + dx*p->var.bits_per_pixel; - src_idx += sy*bits_per_line + sx*p->var.bits_per_pixel; - - if (p->fbops->fb_sync) - p->fbops->fb_sync(p); - - if (rev_copy) { - while (height--) { - dst_idx -= bits_per_line; - src_idx -= bits_per_line; - bitcpy_rev(p, base + (dst_idx / bits), dst_idx % bits, - base + (src_idx / bits), src_idx % bits, bits, - width*p->var.bits_per_pixel, bswapmask); - } - } else { - while (height--) { - bitcpy(p, base + (dst_idx / bits), dst_idx % bits, - base + (src_idx / bits), src_idx % bits, bits, - width*p->var.bits_per_pixel, bswapmask); - dst_idx += bits_per_line; - src_idx += bits_per_line; - } - } -} - -EXPORT_SYMBOL(cfb_copyarea); - -MODULE_AUTHOR("James Simmons "); -MODULE_DESCRIPTION("Generic software accelerated copyarea"); -MODULE_LICENSE("GPL"); - diff --git a/drivers/video/fbdev/cfbfillrect.c b/drivers/video/fbdev/cfbfillrect.c deleted file mode 100644 index ba9f58b..0000000 --- a/drivers/video/fbdev/cfbfillrect.c +++ /dev/null @@ -1,371 +0,0 @@ -/* - * Generic fillrect for frame buffers with packed pixels of any depth. - * - * Copyright (C) 2000 James Simmons (jsimmons@linux-fbdev.org) - * - * 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. - * - * NOTES: - * - * Also need to add code to deal with cards endians that are different than - * the native cpu endians. I also need to deal with MSB position in the word. - * - */ -#include -#include -#include -#include -#include "fb_draw.h" - -#if BITS_PER_LONG == 32 -# define FB_WRITEL fb_writel -# define FB_READL fb_readl -#else -# define FB_WRITEL fb_writeq -# define FB_READL fb_readq -#endif - - /* - * Aligned pattern fill using 32/64-bit memory accesses - */ - -static void -bitfill_aligned(struct fb_info *p, unsigned long __iomem *dst, int dst_idx, - unsigned long pat, unsigned n, int bits, u32 bswapmask) -{ - unsigned long first, last; - - if (!n) - return; - - first = fb_shifted_pixels_mask_long(p, dst_idx, bswapmask); - last = ~fb_shifted_pixels_mask_long(p, (dst_idx+n) % bits, bswapmask); - - if (dst_idx+n <= bits) { - // Single word - if (last) - first &= last; - FB_WRITEL(comp(pat, FB_READL(dst), first), dst); - } else { - // Multiple destination words - - // Leading bits - if (first!= ~0UL) { - FB_WRITEL(comp(pat, FB_READL(dst), first), dst); - dst++; - n -= bits - dst_idx; - } - - // Main chunk - n /= bits; - while (n >= 8) { - FB_WRITEL(pat, dst++); - FB_WRITEL(pat, dst++); - FB_WRITEL(pat, dst++); - FB_WRITEL(pat, dst++); - FB_WRITEL(pat, dst++); - FB_WRITEL(pat, dst++); - FB_WRITEL(pat, dst++); - FB_WRITEL(pat, dst++); - n -= 8; - } - while (n--) - FB_WRITEL(pat, dst++); - - // Trailing bits - if (last) - FB_WRITEL(comp(pat, FB_READL(dst), last), dst); - } -} - - - /* - * Unaligned generic pattern fill using 32/64-bit memory accesses - * The pattern must have been expanded to a full 32/64-bit value - * Left/right are the appropriate shifts to convert to the pattern to be - * used for the next 32/64-bit word - */ - -static void -bitfill_unaligned(struct fb_info *p, unsigned long __iomem *dst, int dst_idx, - unsigned long pat, int left, int right, unsigned n, int bits) -{ - unsigned long first, last; - - if (!n) - return; - - first = FB_SHIFT_HIGH(p, ~0UL, dst_idx); - last = ~(FB_SHIFT_HIGH(p, ~0UL, (dst_idx+n) % bits)); - - if (dst_idx+n <= bits) { - // Single word - if (last) - first &= last; - FB_WRITEL(comp(pat, FB_READL(dst), first), dst); - } else { - // Multiple destination words - // Leading bits - if (first) { - FB_WRITEL(comp(pat, FB_READL(dst), first), dst); - dst++; - pat = pat << left | pat >> right; - n -= bits - dst_idx; - } - - // Main chunk - n /= bits; - while (n >= 4) { - FB_WRITEL(pat, dst++); - pat = pat << left | pat >> right; - FB_WRITEL(pat, dst++); - pat = pat << left | pat >> right; - FB_WRITEL(pat, dst++); - pat = pat << left | pat >> right; - FB_WRITEL(pat, dst++); - pat = pat << left | pat >> right; - n -= 4; - } - while (n--) { - FB_WRITEL(pat, dst++); - pat = pat << left | pat >> right; - } - - // Trailing bits - if (last) - FB_WRITEL(comp(pat, FB_READL(dst), last), dst); - } -} - - /* - * Aligned pattern invert using 32/64-bit memory accesses - */ -static void -bitfill_aligned_rev(struct fb_info *p, unsigned long __iomem *dst, - int dst_idx, unsigned long pat, unsigned n, int bits, - u32 bswapmask) -{ - unsigned long val = pat, dat; - unsigned long first, last; - - if (!n) - return; - - first = fb_shifted_pixels_mask_long(p, dst_idx, bswapmask); - last = ~fb_shifted_pixels_mask_long(p, (dst_idx+n) % bits, bswapmask); - - if (dst_idx+n <= bits) { - // Single word - if (last) - first &= last; - dat = FB_READL(dst); - FB_WRITEL(comp(dat ^ val, dat, first), dst); - } else { - // Multiple destination words - // Leading bits - if (first!=0UL) { - dat = FB_READL(dst); - FB_WRITEL(comp(dat ^ val, dat, first), dst); - dst++; - n -= bits - dst_idx; - } - - // Main chunk - n /= bits; - while (n >= 8) { - FB_WRITEL(FB_READL(dst) ^ val, dst); - dst++; - FB_WRITEL(FB_READL(dst) ^ val, dst); - dst++; - FB_WRITEL(FB_READL(dst) ^ val, dst); - dst++; - FB_WRITEL(FB_READL(dst) ^ val, dst); - dst++; - FB_WRITEL(FB_READL(dst) ^ val, dst); - dst++; - FB_WRITEL(FB_READL(dst) ^ val, dst); - dst++; - FB_WRITEL(FB_READL(dst) ^ val, dst); - dst++; - FB_WRITEL(FB_READL(dst) ^ val, dst); - dst++; - n -= 8; - } - while (n--) { - FB_WRITEL(FB_READL(dst) ^ val, dst); - dst++; - } - // Trailing bits - if (last) { - dat = FB_READL(dst); - FB_WRITEL(comp(dat ^ val, dat, last), dst); - } - } -} - - - /* - * Unaligned generic pattern invert using 32/64-bit memory accesses - * The pattern must have been expanded to a full 32/64-bit value - * Left/right are the appropriate shifts to convert to the pattern to be - * used for the next 32/64-bit word - */ - -static void -bitfill_unaligned_rev(struct fb_info *p, unsigned long __iomem *dst, - int dst_idx, unsigned long pat, int left, int right, - unsigned n, int bits) -{ - unsigned long first, last, dat; - - if (!n) - return; - - first = FB_SHIFT_HIGH(p, ~0UL, dst_idx); - last = ~(FB_SHIFT_HIGH(p, ~0UL, (dst_idx+n) % bits)); - - if (dst_idx+n <= bits) { - // Single word - if (last) - first &= last; - dat = FB_READL(dst); - FB_WRITEL(comp(dat ^ pat, dat, first), dst); - } else { - // Multiple destination words - - // Leading bits - if (first != 0UL) { - dat = FB_READL(dst); - FB_WRITEL(comp(dat ^ pat, dat, first), dst); - dst++; - pat = pat << left | pat >> right; - n -= bits - dst_idx; - } - - // Main chunk - n /= bits; - while (n >= 4) { - FB_WRITEL(FB_READL(dst) ^ pat, dst); - dst++; - pat = pat << left | pat >> right; - FB_WRITEL(FB_READL(dst) ^ pat, dst); - dst++; - pat = pat << left | pat >> right; - FB_WRITEL(FB_READL(dst) ^ pat, dst); - dst++; - pat = pat << left | pat >> right; - FB_WRITEL(FB_READL(dst) ^ pat, dst); - dst++; - pat = pat << left | pat >> right; - n -= 4; - } - while (n--) { - FB_WRITEL(FB_READL(dst) ^ pat, dst); - dst++; - pat = pat << left | pat >> right; - } - - // Trailing bits - if (last) { - dat = FB_READL(dst); - FB_WRITEL(comp(dat ^ pat, dat, last), dst); - } - } -} - -void cfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect) -{ - unsigned long pat, pat2, fg; - unsigned long width = rect->width, height = rect->height; - int bits = BITS_PER_LONG, bytes = bits >> 3; - u32 bpp = p->var.bits_per_pixel; - unsigned long __iomem *dst; - int dst_idx, left; - - if (p->state != FBINFO_STATE_RUNNING) - return; - - if (p->fix.visual == FB_VISUAL_TRUECOLOR || - p->fix.visual == FB_VISUAL_DIRECTCOLOR ) - fg = ((u32 *) (p->pseudo_palette))[rect->color]; - else - fg = rect->color; - - pat = pixel_to_pat(bpp, fg); - - dst = (unsigned long __iomem *)((unsigned long)p->screen_base & ~(bytes-1)); - dst_idx = ((unsigned long)p->screen_base & (bytes - 1))*8; - dst_idx += rect->dy*p->fix.line_length*8+rect->dx*bpp; - /* FIXME For now we support 1-32 bpp only */ - left = bits % bpp; - if (p->fbops->fb_sync) - p->fbops->fb_sync(p); - if (!left) { - u32 bswapmask = fb_compute_bswapmask(p); - void (*fill_op32)(struct fb_info *p, - unsigned long __iomem *dst, int dst_idx, - unsigned long pat, unsigned n, int bits, - u32 bswapmask) = NULL; - - switch (rect->rop) { - case ROP_XOR: - fill_op32 = bitfill_aligned_rev; - break; - case ROP_COPY: - fill_op32 = bitfill_aligned; - break; - default: - printk( KERN_ERR "cfb_fillrect(): unknown rop, defaulting to ROP_COPY\n"); - fill_op32 = bitfill_aligned; - break; - } - while (height--) { - dst += dst_idx >> (ffs(bits) - 1); - dst_idx &= (bits - 1); - fill_op32(p, dst, dst_idx, pat, width*bpp, bits, - bswapmask); - dst_idx += p->fix.line_length*8; - } - } else { - int right, r; - void (*fill_op)(struct fb_info *p, unsigned long __iomem *dst, - int dst_idx, unsigned long pat, int left, - int right, unsigned n, int bits) = NULL; -#ifdef __LITTLE_ENDIAN - right = left; - left = bpp - right; -#else - right = bpp - left; -#endif - switch (rect->rop) { - case ROP_XOR: - fill_op = bitfill_unaligned_rev; - break; - case ROP_COPY: - fill_op = bitfill_unaligned; - break; - default: - printk(KERN_ERR "cfb_fillrect(): unknown rop, defaulting to ROP_COPY\n"); - fill_op = bitfill_unaligned; - break; - } - while (height--) { - dst += dst_idx / bits; - dst_idx &= (bits - 1); - r = dst_idx % bpp; - /* rotate pattern to the correct start position */ - pat2 = le_long_to_cpu(rolx(cpu_to_le_long(pat), r, bpp)); - fill_op(p, dst, dst_idx, pat2, left, right, - width*bpp, bits); - dst_idx += p->fix.line_length*8; - } - } -} - -EXPORT_SYMBOL(cfb_fillrect); - -MODULE_AUTHOR("James Simmons "); -MODULE_DESCRIPTION("Generic software accelerated fill rectangle"); -MODULE_LICENSE("GPL"); diff --git a/drivers/video/fbdev/cfbimgblt.c b/drivers/video/fbdev/cfbimgblt.c deleted file mode 100644 index a2bb276..0000000 --- a/drivers/video/fbdev/cfbimgblt.c +++ /dev/null @@ -1,313 +0,0 @@ -/* - * Generic BitBLT function for frame buffer with packed pixels of any depth. - * - * Copyright (C) June 1999 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. - * - * NOTES: - * - * This function copys a image from system memory to video memory. The - * image can be a bitmap where each 0 represents the background color and - * each 1 represents the foreground color. Great for font handling. It can - * also be a color image. This is determined by image_depth. The color image - * must be laid out exactly in the same format as the framebuffer. Yes I know - * their are cards with hardware that coverts images of various depths to the - * framebuffer depth. But not every card has this. All images must be rounded - * up to the nearest byte. For example a bitmap 12 bits wide must be two - * bytes width. - * - * Tony: - * Incorporate mask tables similar to fbcon-cfb*.c in 2.4 API. This speeds - * up the code significantly. - * - * Code for depths not multiples of BITS_PER_LONG is still kludgy, which is - * still processed a bit at a time. - * - * Also need to add code to deal with cards endians that are different than - * the native cpu endians. I also need to deal with MSB position in the word. - */ -#include -#include -#include -#include -#include "fb_draw.h" - -#define DEBUG - -#ifdef DEBUG -#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt,__func__,## args) -#else -#define DPRINTK(fmt, args...) -#endif - -static const u32 cfb_tab8_be[] = { - 0x00000000,0x000000ff,0x0000ff00,0x0000ffff, - 0x00ff0000,0x00ff00ff,0x00ffff00,0x00ffffff, - 0xff000000,0xff0000ff,0xff00ff00,0xff00ffff, - 0xffff0000,0xffff00ff,0xffffff00,0xffffffff -}; - -static const u32 cfb_tab8_le[] = { - 0x00000000,0xff000000,0x00ff0000,0xffff0000, - 0x0000ff00,0xff00ff00,0x00ffff00,0xffffff00, - 0x000000ff,0xff0000ff,0x00ff00ff,0xffff00ff, - 0x0000ffff,0xff00ffff,0x00ffffff,0xffffffff -}; - -static const u32 cfb_tab16_be[] = { - 0x00000000, 0x0000ffff, 0xffff0000, 0xffffffff -}; - -static const u32 cfb_tab16_le[] = { - 0x00000000, 0xffff0000, 0x0000ffff, 0xffffffff -}; - -static const u32 cfb_tab32[] = { - 0x00000000, 0xffffffff -}; - -#define FB_WRITEL fb_writel -#define FB_READL fb_readl - -static inline void color_imageblit(const struct fb_image *image, - struct fb_info *p, u8 __iomem *dst1, - u32 start_index, - u32 pitch_index) -{ - /* Draw the penguin */ - u32 __iomem *dst, *dst2; - u32 color = 0, val, shift; - int i, n, bpp = p->var.bits_per_pixel; - u32 null_bits = 32 - bpp; - u32 *palette = (u32 *) p->pseudo_palette; - const u8 *src = image->data; - u32 bswapmask = fb_compute_bswapmask(p); - - dst2 = (u32 __iomem *) dst1; - for (i = image->height; i--; ) { - n = image->width; - dst = (u32 __iomem *) dst1; - shift = 0; - val = 0; - - if (start_index) { - u32 start_mask = ~fb_shifted_pixels_mask_u32(p, - start_index, bswapmask); - val = FB_READL(dst) & start_mask; - shift = start_index; - } - while (n--) { - if (p->fix.visual == FB_VISUAL_TRUECOLOR || - p->fix.visual == FB_VISUAL_DIRECTCOLOR ) - color = palette[*src]; - else - color = *src; - color <<= FB_LEFT_POS(p, bpp); - val |= FB_SHIFT_HIGH(p, color, shift ^ bswapmask); - if (shift >= null_bits) { - FB_WRITEL(val, dst++); - - val = (shift == null_bits) ? 0 : - FB_SHIFT_LOW(p, color, 32 - shift); - } - shift += bpp; - shift &= (32 - 1); - src++; - } - if (shift) { - u32 end_mask = fb_shifted_pixels_mask_u32(p, shift, - bswapmask); - - FB_WRITEL((FB_READL(dst) & end_mask) | val, dst); - } - dst1 += p->fix.line_length; - if (pitch_index) { - dst2 += p->fix.line_length; - dst1 = (u8 __iomem *)((long __force)dst2 & ~(sizeof(u32) - 1)); - - start_index += pitch_index; - start_index &= 32 - 1; - } - } -} - -static inline void slow_imageblit(const struct fb_image *image, struct fb_info *p, - u8 __iomem *dst1, u32 fgcolor, - u32 bgcolor, - u32 start_index, - u32 pitch_index) -{ - u32 shift, color = 0, bpp = p->var.bits_per_pixel; - u32 __iomem *dst, *dst2; - u32 val, pitch = p->fix.line_length; - u32 null_bits = 32 - bpp; - u32 spitch = (image->width+7)/8; - const u8 *src = image->data, *s; - u32 i, j, l; - u32 bswapmask = fb_compute_bswapmask(p); - - dst2 = (u32 __iomem *) dst1; - fgcolor <<= FB_LEFT_POS(p, bpp); - bgcolor <<= FB_LEFT_POS(p, bpp); - - for (i = image->height; i--; ) { - shift = val = 0; - l = 8; - j = image->width; - dst = (u32 __iomem *) dst1; - s = src; - - /* write leading bits */ - if (start_index) { - u32 start_mask = ~fb_shifted_pixels_mask_u32(p, - start_index, bswapmask); - val = FB_READL(dst) & start_mask; - shift = start_index; - } - - while (j--) { - l--; - color = (*s & (1 << l)) ? fgcolor : bgcolor; - val |= FB_SHIFT_HIGH(p, color, shift ^ bswapmask); - - /* Did the bitshift spill bits to the next long? */ - if (shift >= null_bits) { - FB_WRITEL(val, dst++); - val = (shift == null_bits) ? 0 : - FB_SHIFT_LOW(p, color, 32 - shift); - } - shift += bpp; - shift &= (32 - 1); - if (!l) { l = 8; s++; } - } - - /* write trailing bits */ - if (shift) { - u32 end_mask = fb_shifted_pixels_mask_u32(p, shift, - bswapmask); - - FB_WRITEL((FB_READL(dst) & end_mask) | val, dst); - } - - dst1 += pitch; - src += spitch; - if (pitch_index) { - dst2 += pitch; - dst1 = (u8 __iomem *)((long __force)dst2 & ~(sizeof(u32) - 1)); - start_index += pitch_index; - start_index &= 32 - 1; - } - - } -} - -/* - * fast_imageblit - optimized monochrome color expansion - * - * Only if: bits_per_pixel == 8, 16, or 32 - * image->width is divisible by pixel/dword (ppw); - * fix->line_legth is divisible by 4; - * beginning and end of a scanline is dword aligned - */ -static inline void fast_imageblit(const struct fb_image *image, struct fb_info *p, - u8 __iomem *dst1, u32 fgcolor, - u32 bgcolor) -{ - u32 fgx = fgcolor, bgx = bgcolor, bpp = p->var.bits_per_pixel; - u32 ppw = 32/bpp, spitch = (image->width + 7)/8; - u32 bit_mask, end_mask, eorx, shift; - const char *s = image->data, *src; - u32 __iomem *dst; - const u32 *tab = NULL; - int i, j, k; - - switch (bpp) { - case 8: - tab = fb_be_math(p) ? cfb_tab8_be : cfb_tab8_le; - break; - case 16: - tab = fb_be_math(p) ? cfb_tab16_be : cfb_tab16_le; - break; - case 32: - default: - tab = cfb_tab32; - break; - } - - for (i = ppw-1; i--; ) { - fgx <<= bpp; - bgx <<= bpp; - fgx |= fgcolor; - bgx |= bgcolor; - } - - bit_mask = (1 << ppw) - 1; - eorx = fgx ^ bgx; - k = image->width/ppw; - - for (i = image->height; i--; ) { - dst = (u32 __iomem *) dst1, shift = 8; src = s; - - for (j = k; j--; ) { - shift -= ppw; - end_mask = tab[(*src >> shift) & bit_mask]; - FB_WRITEL((end_mask & eorx)^bgx, dst++); - if (!shift) { shift = 8; src++; } - } - dst1 += p->fix.line_length; - s += spitch; - } -} - -void cfb_imageblit(struct fb_info *p, const struct fb_image *image) -{ - u32 fgcolor, bgcolor, start_index, bitstart, pitch_index = 0; - u32 bpl = sizeof(u32), bpp = p->var.bits_per_pixel; - u32 width = image->width; - u32 dx = image->dx, dy = image->dy; - u8 __iomem *dst1; - - if (p->state != FBINFO_STATE_RUNNING) - return; - - bitstart = (dy * p->fix.line_length * 8) + (dx * bpp); - start_index = bitstart & (32 - 1); - pitch_index = (p->fix.line_length & (bpl - 1)) * 8; - - bitstart /= 8; - bitstart &= ~(bpl - 1); - dst1 = p->screen_base + bitstart; - - if (p->fbops->fb_sync) - p->fbops->fb_sync(p); - - if (image->depth == 1) { - if (p->fix.visual == FB_VISUAL_TRUECOLOR || - p->fix.visual == FB_VISUAL_DIRECTCOLOR) { - fgcolor = ((u32*)(p->pseudo_palette))[image->fg_color]; - bgcolor = ((u32*)(p->pseudo_palette))[image->bg_color]; - } else { - fgcolor = image->fg_color; - bgcolor = image->bg_color; - } - - if (32 % bpp == 0 && !start_index && !pitch_index && - ((width & (32/bpp-1)) == 0) && - bpp >= 8 && bpp <= 32) - fast_imageblit(image, p, dst1, fgcolor, bgcolor); - else - slow_imageblit(image, p, dst1, fgcolor, bgcolor, - start_index, pitch_index); - } else - color_imageblit(image, p, dst1, start_index, pitch_index); -} - -EXPORT_SYMBOL(cfb_imageblit); - -MODULE_AUTHOR("James Simmons "); -MODULE_DESCRIPTION("Generic software accelerated imaging drawing"); -MODULE_LICENSE("GPL"); - diff --git a/drivers/video/fbdev/core/Makefile b/drivers/video/fbdev/core/Makefile new file mode 100644 index 0000000..fa30653 --- /dev/null +++ b/drivers/video/fbdev/core/Makefile @@ -0,0 +1,16 @@ +obj-y += fb_notify.o +obj-$(CONFIG_FB) += fb.o +fb-y := fbmem.o fbmon.o fbcmap.o fbsysfs.o \ + modedb.o fbcvt.o +fb-objs := $(fb-y) + +obj-$(CONFIG_FB_CFB_FILLRECT) += cfbfillrect.o +obj-$(CONFIG_FB_CFB_COPYAREA) += cfbcopyarea.o +obj-$(CONFIG_FB_CFB_IMAGEBLIT) += cfbimgblt.o +obj-$(CONFIG_FB_SYS_FILLRECT) += sysfillrect.o +obj-$(CONFIG_FB_SYS_COPYAREA) += syscopyarea.o +obj-$(CONFIG_FB_SYS_IMAGEBLIT) += sysimgblt.o +obj-$(CONFIG_FB_SYS_FOPS) += fb_sys_fops.o +obj-$(CONFIG_FB_SVGALIB) += svgalib.o +obj-$(CONFIG_FB_DDC) += fb_ddc.o +obj-$(CONFIG_FB_DEFERRED_IO) += fb_defio.o diff --git a/drivers/video/fbdev/core/cfbcopyarea.c b/drivers/video/fbdev/core/cfbcopyarea.c new file mode 100644 index 0000000..bcb5723 --- /dev/null +++ b/drivers/video/fbdev/core/cfbcopyarea.c @@ -0,0 +1,434 @@ +/* + * Generic function for frame buffer with packed pixels of any depth. + * + * Copyright (C) 1999-2005 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. + * + * NOTES: + * + * This is for cfb packed pixels. Iplan and such are incorporated in the + * drivers that need them. + * + * FIXME + * + * Also need to add code to deal with cards endians that are different than + * the native cpu endians. I also need to deal with MSB position in the word. + * + * The two functions or copying forward and backward could be split up like + * the ones for filling, i.e. in aligned and unaligned versions. This would + * help moving some redundant computations and branches out of the loop, too. + */ + +#include +#include +#include +#include +#include +#include +#include "fb_draw.h" + +#if BITS_PER_LONG == 32 +# define FB_WRITEL fb_writel +# define FB_READL fb_readl +#else +# define FB_WRITEL fb_writeq +# define FB_READL fb_readq +#endif + + /* + * Generic bitwise copy algorithm + */ + +static void +bitcpy(struct fb_info *p, unsigned long __iomem *dst, unsigned dst_idx, + const unsigned long __iomem *src, unsigned src_idx, int bits, + unsigned n, u32 bswapmask) +{ + unsigned long first, last; + int const shift = dst_idx-src_idx; + +#if 0 + /* + * If you suspect bug in this function, compare it with this simple + * memmove implementation. + */ + fb_memmove((char *)dst + ((dst_idx & (bits - 1))) / 8, + (char *)src + ((src_idx & (bits - 1))) / 8, n / 8); + return; +#endif + + first = fb_shifted_pixels_mask_long(p, dst_idx, bswapmask); + last = ~fb_shifted_pixels_mask_long(p, (dst_idx+n) % bits, bswapmask); + + if (!shift) { + // Same alignment for source and dest + + if (dst_idx+n <= bits) { + // Single word + if (last) + first &= last; + FB_WRITEL( comp( FB_READL(src), FB_READL(dst), first), dst); + } else { + // Multiple destination words + + // Leading bits + if (first != ~0UL) { + FB_WRITEL( comp( FB_READL(src), FB_READL(dst), first), dst); + dst++; + src++; + n -= bits - dst_idx; + } + + // Main chunk + n /= bits; + while (n >= 8) { + FB_WRITEL(FB_READL(src++), dst++); + FB_WRITEL(FB_READL(src++), dst++); + FB_WRITEL(FB_READL(src++), dst++); + FB_WRITEL(FB_READL(src++), dst++); + FB_WRITEL(FB_READL(src++), dst++); + FB_WRITEL(FB_READL(src++), dst++); + FB_WRITEL(FB_READL(src++), dst++); + FB_WRITEL(FB_READL(src++), dst++); + n -= 8; + } + while (n--) + FB_WRITEL(FB_READL(src++), dst++); + + // Trailing bits + if (last) + FB_WRITEL( comp( FB_READL(src), FB_READL(dst), last), dst); + } + } else { + /* Different alignment for source and dest */ + unsigned long d0, d1; + int m; + + int const left = shift & (bits - 1); + int const right = -shift & (bits - 1); + + if (dst_idx+n <= bits) { + // Single destination word + if (last) + first &= last; + d0 = FB_READL(src); + d0 = fb_rev_pixels_in_long(d0, bswapmask); + if (shift > 0) { + // Single source word + d0 <<= left; + } else if (src_idx+n <= bits) { + // Single source word + d0 >>= right; + } else { + // 2 source words + d1 = FB_READL(src + 1); + d1 = fb_rev_pixels_in_long(d1, bswapmask); + d0 = d0 >> right | d1 << left; + } + d0 = fb_rev_pixels_in_long(d0, bswapmask); + FB_WRITEL(comp(d0, FB_READL(dst), first), dst); + } else { + // Multiple destination words + /** We must always remember the last value read, because in case + SRC and DST overlap bitwise (e.g. when moving just one pixel in + 1bpp), we always collect one full long for DST and that might + overlap with the current long from SRC. We store this value in + 'd0'. */ + d0 = FB_READL(src++); + d0 = fb_rev_pixels_in_long(d0, bswapmask); + // Leading bits + if (shift > 0) { + // Single source word + d1 = d0; + d0 <<= left; + n -= bits - dst_idx; + } else { + // 2 source words + d1 = FB_READL(src++); + d1 = fb_rev_pixels_in_long(d1, bswapmask); + + d0 = d0 >> right | d1 << left; + n -= bits - dst_idx; + } + d0 = fb_rev_pixels_in_long(d0, bswapmask); + FB_WRITEL(comp(d0, FB_READL(dst), first), dst); + d0 = d1; + dst++; + + // Main chunk + m = n % bits; + n /= bits; + while ((n >= 4) && !bswapmask) { + d1 = FB_READL(src++); + FB_WRITEL(d0 >> right | d1 << left, dst++); + d0 = d1; + d1 = FB_READL(src++); + FB_WRITEL(d0 >> right | d1 << left, dst++); + d0 = d1; + d1 = FB_READL(src++); + FB_WRITEL(d0 >> right | d1 << left, dst++); + d0 = d1; + d1 = FB_READL(src++); + FB_WRITEL(d0 >> right | d1 << left, dst++); + d0 = d1; + n -= 4; + } + while (n--) { + d1 = FB_READL(src++); + d1 = fb_rev_pixels_in_long(d1, bswapmask); + d0 = d0 >> right | d1 << left; + d0 = fb_rev_pixels_in_long(d0, bswapmask); + FB_WRITEL(d0, dst++); + d0 = d1; + } + + // Trailing bits + if (m) { + if (m <= bits - right) { + // Single source word + d0 >>= right; + } else { + // 2 source words + d1 = FB_READL(src); + d1 = fb_rev_pixels_in_long(d1, + bswapmask); + d0 = d0 >> right | d1 << left; + } + d0 = fb_rev_pixels_in_long(d0, bswapmask); + FB_WRITEL(comp(d0, FB_READL(dst), last), dst); + } + } + } +} + + /* + * Generic bitwise copy algorithm, operating backward + */ + +static void +bitcpy_rev(struct fb_info *p, unsigned long __iomem *dst, unsigned dst_idx, + const unsigned long __iomem *src, unsigned src_idx, int bits, + unsigned n, u32 bswapmask) +{ + unsigned long first, last; + int shift; + +#if 0 + /* + * If you suspect bug in this function, compare it with this simple + * memmove implementation. + */ + fb_memmove((char *)dst + ((dst_idx & (bits - 1))) / 8, + (char *)src + ((src_idx & (bits - 1))) / 8, n / 8); + return; +#endif + + dst += (dst_idx + n - 1) / bits; + src += (src_idx + n - 1) / bits; + dst_idx = (dst_idx + n - 1) % bits; + src_idx = (src_idx + n - 1) % bits; + + shift = dst_idx-src_idx; + + first = ~fb_shifted_pixels_mask_long(p, (dst_idx + 1) % bits, bswapmask); + last = fb_shifted_pixels_mask_long(p, (bits + dst_idx + 1 - n) % bits, bswapmask); + + if (!shift) { + // Same alignment for source and dest + + if ((unsigned long)dst_idx+1 >= n) { + // Single word + if (first) + last &= first; + FB_WRITEL( comp( FB_READL(src), FB_READL(dst), last), dst); + } else { + // Multiple destination words + + // Leading bits + if (first) { + FB_WRITEL( comp( FB_READL(src), FB_READL(dst), first), dst); + dst--; + src--; + n -= dst_idx+1; + } + + // Main chunk + n /= bits; + while (n >= 8) { + FB_WRITEL(FB_READL(src--), dst--); + FB_WRITEL(FB_READL(src--), dst--); + FB_WRITEL(FB_READL(src--), dst--); + FB_WRITEL(FB_READL(src--), dst--); + FB_WRITEL(FB_READL(src--), dst--); + FB_WRITEL(FB_READL(src--), dst--); + FB_WRITEL(FB_READL(src--), dst--); + FB_WRITEL(FB_READL(src--), dst--); + n -= 8; + } + while (n--) + FB_WRITEL(FB_READL(src--), dst--); + + // Trailing bits + if (last != -1UL) + FB_WRITEL( comp( FB_READL(src), FB_READL(dst), last), dst); + } + } else { + // Different alignment for source and dest + unsigned long d0, d1; + int m; + + int const left = shift & (bits-1); + int const right = -shift & (bits-1); + + if ((unsigned long)dst_idx+1 >= n) { + // Single destination word + if (first) + last &= first; + d0 = FB_READL(src); + if (shift < 0) { + // Single source word + d0 >>= right; + } else if (1+(unsigned long)src_idx >= n) { + // Single source word + d0 <<= left; + } else { + // 2 source words + d1 = FB_READL(src - 1); + d1 = fb_rev_pixels_in_long(d1, bswapmask); + d0 = d0 << left | d1 >> right; + } + d0 = fb_rev_pixels_in_long(d0, bswapmask); + FB_WRITEL(comp(d0, FB_READL(dst), last), dst); + } else { + // Multiple destination words + /** We must always remember the last value read, because in case + SRC and DST overlap bitwise (e.g. when moving just one pixel in + 1bpp), we always collect one full long for DST and that might + overlap with the current long from SRC. We store this value in + 'd0'. */ + + d0 = FB_READL(src--); + d0 = fb_rev_pixels_in_long(d0, bswapmask); + // Leading bits + if (shift < 0) { + // Single source word + d1 = d0; + d0 >>= right; + } else { + // 2 source words + d1 = FB_READL(src--); + d1 = fb_rev_pixels_in_long(d1, bswapmask); + d0 = d0 << left | d1 >> right; + } + d0 = fb_rev_pixels_in_long(d0, bswapmask); + FB_WRITEL(comp(d0, FB_READL(dst), first), dst); + d0 = d1; + dst--; + n -= dst_idx+1; + + // Main chunk + m = n % bits; + n /= bits; + while ((n >= 4) && !bswapmask) { + d1 = FB_READL(src--); + FB_WRITEL(d0 << left | d1 >> right, dst--); + d0 = d1; + d1 = FB_READL(src--); + FB_WRITEL(d0 << left | d1 >> right, dst--); + d0 = d1; + d1 = FB_READL(src--); + FB_WRITEL(d0 << left | d1 >> right, dst--); + d0 = d1; + d1 = FB_READL(src--); + FB_WRITEL(d0 << left | d1 >> right, dst--); + d0 = d1; + n -= 4; + } + while (n--) { + d1 = FB_READL(src--); + d1 = fb_rev_pixels_in_long(d1, bswapmask); + d0 = d0 << left | d1 >> right; + d0 = fb_rev_pixels_in_long(d0, bswapmask); + FB_WRITEL(d0, dst--); + d0 = d1; + } + + // Trailing bits + if (m) { + if (m <= bits - left) { + // Single source word + d0 <<= left; + } else { + // 2 source words + d1 = FB_READL(src); + d1 = fb_rev_pixels_in_long(d1, + bswapmask); + d0 = d0 << left | d1 >> right; + } + d0 = fb_rev_pixels_in_long(d0, bswapmask); + FB_WRITEL(comp(d0, FB_READL(dst), last), dst); + } + } + } +} + +void cfb_copyarea(struct fb_info *p, const struct fb_copyarea *area) +{ + u32 dx = area->dx, dy = area->dy, sx = area->sx, sy = area->sy; + u32 height = area->height, width = area->width; + unsigned long const bits_per_line = p->fix.line_length*8u; + unsigned long __iomem *base = NULL; + int bits = BITS_PER_LONG, bytes = bits >> 3; + unsigned dst_idx = 0, src_idx = 0, rev_copy = 0; + u32 bswapmask = fb_compute_bswapmask(p); + + if (p->state != FBINFO_STATE_RUNNING) + return; + + /* if the beginning of the target area might overlap with the end of + the source area, be have to copy the area reverse. */ + if ((dy == sy && dx > sx) || (dy > sy)) { + dy += height; + sy += height; + rev_copy = 1; + } + + // split the base of the framebuffer into a long-aligned address and the + // index of the first bit + base = (unsigned long __iomem *)((unsigned long)p->screen_base & ~(bytes-1)); + dst_idx = src_idx = 8*((unsigned long)p->screen_base & (bytes-1)); + // add offset of source and target area + dst_idx += dy*bits_per_line + dx*p->var.bits_per_pixel; + src_idx += sy*bits_per_line + sx*p->var.bits_per_pixel; + + if (p->fbops->fb_sync) + p->fbops->fb_sync(p); + + if (rev_copy) { + while (height--) { + dst_idx -= bits_per_line; + src_idx -= bits_per_line; + bitcpy_rev(p, base + (dst_idx / bits), dst_idx % bits, + base + (src_idx / bits), src_idx % bits, bits, + width*p->var.bits_per_pixel, bswapmask); + } + } else { + while (height--) { + bitcpy(p, base + (dst_idx / bits), dst_idx % bits, + base + (src_idx / bits), src_idx % bits, bits, + width*p->var.bits_per_pixel, bswapmask); + dst_idx += bits_per_line; + src_idx += bits_per_line; + } + } +} + +EXPORT_SYMBOL(cfb_copyarea); + +MODULE_AUTHOR("James Simmons "); +MODULE_DESCRIPTION("Generic software accelerated copyarea"); +MODULE_LICENSE("GPL"); + diff --git a/drivers/video/fbdev/core/cfbfillrect.c b/drivers/video/fbdev/core/cfbfillrect.c new file mode 100644 index 0000000..ba9f58b --- /dev/null +++ b/drivers/video/fbdev/core/cfbfillrect.c @@ -0,0 +1,371 @@ +/* + * Generic fillrect for frame buffers with packed pixels of any depth. + * + * Copyright (C) 2000 James Simmons (jsimmons@linux-fbdev.org) + * + * 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. + * + * NOTES: + * + * Also need to add code to deal with cards endians that are different than + * the native cpu endians. I also need to deal with MSB position in the word. + * + */ +#include +#include +#include +#include +#include "fb_draw.h" + +#if BITS_PER_LONG == 32 +# define FB_WRITEL fb_writel +# define FB_READL fb_readl +#else +# define FB_WRITEL fb_writeq +# define FB_READL fb_readq +#endif + + /* + * Aligned pattern fill using 32/64-bit memory accesses + */ + +static void +bitfill_aligned(struct fb_info *p, unsigned long __iomem *dst, int dst_idx, + unsigned long pat, unsigned n, int bits, u32 bswapmask) +{ + unsigned long first, last; + + if (!n) + return; + + first = fb_shifted_pixels_mask_long(p, dst_idx, bswapmask); + last = ~fb_shifted_pixels_mask_long(p, (dst_idx+n) % bits, bswapmask); + + if (dst_idx+n <= bits) { + // Single word + if (last) + first &= last; + FB_WRITEL(comp(pat, FB_READL(dst), first), dst); + } else { + // Multiple destination words + + // Leading bits + if (first!= ~0UL) { + FB_WRITEL(comp(pat, FB_READL(dst), first), dst); + dst++; + n -= bits - dst_idx; + } + + // Main chunk + n /= bits; + while (n >= 8) { + FB_WRITEL(pat, dst++); + FB_WRITEL(pat, dst++); + FB_WRITEL(pat, dst++); + FB_WRITEL(pat, dst++); + FB_WRITEL(pat, dst++); + FB_WRITEL(pat, dst++); + FB_WRITEL(pat, dst++); + FB_WRITEL(pat, dst++); + n -= 8; + } + while (n--) + FB_WRITEL(pat, dst++); + + // Trailing bits + if (last) + FB_WRITEL(comp(pat, FB_READL(dst), last), dst); + } +} + + + /* + * Unaligned generic pattern fill using 32/64-bit memory accesses + * The pattern must have been expanded to a full 32/64-bit value + * Left/right are the appropriate shifts to convert to the pattern to be + * used for the next 32/64-bit word + */ + +static void +bitfill_unaligned(struct fb_info *p, unsigned long __iomem *dst, int dst_idx, + unsigned long pat, int left, int right, unsigned n, int bits) +{ + unsigned long first, last; + + if (!n) + return; + + first = FB_SHIFT_HIGH(p, ~0UL, dst_idx); + last = ~(FB_SHIFT_HIGH(p, ~0UL, (dst_idx+n) % bits)); + + if (dst_idx+n <= bits) { + // Single word + if (last) + first &= last; + FB_WRITEL(comp(pat, FB_READL(dst), first), dst); + } else { + // Multiple destination words + // Leading bits + if (first) { + FB_WRITEL(comp(pat, FB_READL(dst), first), dst); + dst++; + pat = pat << left | pat >> right; + n -= bits - dst_idx; + } + + // Main chunk + n /= bits; + while (n >= 4) { + FB_WRITEL(pat, dst++); + pat = pat << left | pat >> right; + FB_WRITEL(pat, dst++); + pat = pat << left | pat >> right; + FB_WRITEL(pat, dst++); + pat = pat << left | pat >> right; + FB_WRITEL(pat, dst++); + pat = pat << left | pat >> right; + n -= 4; + } + while (n--) { + FB_WRITEL(pat, dst++); + pat = pat << left | pat >> right; + } + + // Trailing bits + if (last) + FB_WRITEL(comp(pat, FB_READL(dst), last), dst); + } +} + + /* + * Aligned pattern invert using 32/64-bit memory accesses + */ +static void +bitfill_aligned_rev(struct fb_info *p, unsigned long __iomem *dst, + int dst_idx, unsigned long pat, unsigned n, int bits, + u32 bswapmask) +{ + unsigned long val = pat, dat; + unsigned long first, last; + + if (!n) + return; + + first = fb_shifted_pixels_mask_long(p, dst_idx, bswapmask); + last = ~fb_shifted_pixels_mask_long(p, (dst_idx+n) % bits, bswapmask); + + if (dst_idx+n <= bits) { + // Single word + if (last) + first &= last; + dat = FB_READL(dst); + FB_WRITEL(comp(dat ^ val, dat, first), dst); + } else { + // Multiple destination words + // Leading bits + if (first!=0UL) { + dat = FB_READL(dst); + FB_WRITEL(comp(dat ^ val, dat, first), dst); + dst++; + n -= bits - dst_idx; + } + + // Main chunk + n /= bits; + while (n >= 8) { + FB_WRITEL(FB_READL(dst) ^ val, dst); + dst++; + FB_WRITEL(FB_READL(dst) ^ val, dst); + dst++; + FB_WRITEL(FB_READL(dst) ^ val, dst); + dst++; + FB_WRITEL(FB_READL(dst) ^ val, dst); + dst++; + FB_WRITEL(FB_READL(dst) ^ val, dst); + dst++; + FB_WRITEL(FB_READL(dst) ^ val, dst); + dst++; + FB_WRITEL(FB_READL(dst) ^ val, dst); + dst++; + FB_WRITEL(FB_READL(dst) ^ val, dst); + dst++; + n -= 8; + } + while (n--) { + FB_WRITEL(FB_READL(dst) ^ val, dst); + dst++; + } + // Trailing bits + if (last) { + dat = FB_READL(dst); + FB_WRITEL(comp(dat ^ val, dat, last), dst); + } + } +} + + + /* + * Unaligned generic pattern invert using 32/64-bit memory accesses + * The pattern must have been expanded to a full 32/64-bit value + * Left/right are the appropriate shifts to convert to the pattern to be + * used for the next 32/64-bit word + */ + +static void +bitfill_unaligned_rev(struct fb_info *p, unsigned long __iomem *dst, + int dst_idx, unsigned long pat, int left, int right, + unsigned n, int bits) +{ + unsigned long first, last, dat; + + if (!n) + return; + + first = FB_SHIFT_HIGH(p, ~0UL, dst_idx); + last = ~(FB_SHIFT_HIGH(p, ~0UL, (dst_idx+n) % bits)); + + if (dst_idx+n <= bits) { + // Single word + if (last) + first &= last; + dat = FB_READL(dst); + FB_WRITEL(comp(dat ^ pat, dat, first), dst); + } else { + // Multiple destination words + + // Leading bits + if (first != 0UL) { + dat = FB_READL(dst); + FB_WRITEL(comp(dat ^ pat, dat, first), dst); + dst++; + pat = pat << left | pat >> right; + n -= bits - dst_idx; + } + + // Main chunk + n /= bits; + while (n >= 4) { + FB_WRITEL(FB_READL(dst) ^ pat, dst); + dst++; + pat = pat << left | pat >> right; + FB_WRITEL(FB_READL(dst) ^ pat, dst); + dst++; + pat = pat << left | pat >> right; + FB_WRITEL(FB_READL(dst) ^ pat, dst); + dst++; + pat = pat << left | pat >> right; + FB_WRITEL(FB_READL(dst) ^ pat, dst); + dst++; + pat = pat << left | pat >> right; + n -= 4; + } + while (n--) { + FB_WRITEL(FB_READL(dst) ^ pat, dst); + dst++; + pat = pat << left | pat >> right; + } + + // Trailing bits + if (last) { + dat = FB_READL(dst); + FB_WRITEL(comp(dat ^ pat, dat, last), dst); + } + } +} + +void cfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect) +{ + unsigned long pat, pat2, fg; + unsigned long width = rect->width, height = rect->height; + int bits = BITS_PER_LONG, bytes = bits >> 3; + u32 bpp = p->var.bits_per_pixel; + unsigned long __iomem *dst; + int dst_idx, left; + + if (p->state != FBINFO_STATE_RUNNING) + return; + + if (p->fix.visual == FB_VISUAL_TRUECOLOR || + p->fix.visual == FB_VISUAL_DIRECTCOLOR ) + fg = ((u32 *) (p->pseudo_palette))[rect->color]; + else + fg = rect->color; + + pat = pixel_to_pat(bpp, fg); + + dst = (unsigned long __iomem *)((unsigned long)p->screen_base & ~(bytes-1)); + dst_idx = ((unsigned long)p->screen_base & (bytes - 1))*8; + dst_idx += rect->dy*p->fix.line_length*8+rect->dx*bpp; + /* FIXME For now we support 1-32 bpp only */ + left = bits % bpp; + if (p->fbops->fb_sync) + p->fbops->fb_sync(p); + if (!left) { + u32 bswapmask = fb_compute_bswapmask(p); + void (*fill_op32)(struct fb_info *p, + unsigned long __iomem *dst, int dst_idx, + unsigned long pat, unsigned n, int bits, + u32 bswapmask) = NULL; + + switch (rect->rop) { + case ROP_XOR: + fill_op32 = bitfill_aligned_rev; + break; + case ROP_COPY: + fill_op32 = bitfill_aligned; + break; + default: + printk( KERN_ERR "cfb_fillrect(): unknown rop, defaulting to ROP_COPY\n"); + fill_op32 = bitfill_aligned; + break; + } + while (height--) { + dst += dst_idx >> (ffs(bits) - 1); + dst_idx &= (bits - 1); + fill_op32(p, dst, dst_idx, pat, width*bpp, bits, + bswapmask); + dst_idx += p->fix.line_length*8; + } + } else { + int right, r; + void (*fill_op)(struct fb_info *p, unsigned long __iomem *dst, + int dst_idx, unsigned long pat, int left, + int right, unsigned n, int bits) = NULL; +#ifdef __LITTLE_ENDIAN + right = left; + left = bpp - right; +#else + right = bpp - left; +#endif + switch (rect->rop) { + case ROP_XOR: + fill_op = bitfill_unaligned_rev; + break; + case ROP_COPY: + fill_op = bitfill_unaligned; + break; + default: + printk(KERN_ERR "cfb_fillrect(): unknown rop, defaulting to ROP_COPY\n"); + fill_op = bitfill_unaligned; + break; + } + while (height--) { + dst += dst_idx / bits; + dst_idx &= (bits - 1); + r = dst_idx % bpp; + /* rotate pattern to the correct start position */ + pat2 = le_long_to_cpu(rolx(cpu_to_le_long(pat), r, bpp)); + fill_op(p, dst, dst_idx, pat2, left, right, + width*bpp, bits); + dst_idx += p->fix.line_length*8; + } + } +} + +EXPORT_SYMBOL(cfb_fillrect); + +MODULE_AUTHOR("James Simmons "); +MODULE_DESCRIPTION("Generic software accelerated fill rectangle"); +MODULE_LICENSE("GPL"); diff --git a/drivers/video/fbdev/core/cfbimgblt.c b/drivers/video/fbdev/core/cfbimgblt.c new file mode 100644 index 0000000..a2bb276 --- /dev/null +++ b/drivers/video/fbdev/core/cfbimgblt.c @@ -0,0 +1,313 @@ +/* + * Generic BitBLT function for frame buffer with packed pixels of any depth. + * + * Copyright (C) June 1999 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. + * + * NOTES: + * + * This function copys a image from system memory to video memory. The + * image can be a bitmap where each 0 represents the background color and + * each 1 represents the foreground color. Great for font handling. It can + * also be a color image. This is determined by image_depth. The color image + * must be laid out exactly in the same format as the framebuffer. Yes I know + * their are cards with hardware that coverts images of various depths to the + * framebuffer depth. But not every card has this. All images must be rounded + * up to the nearest byte. For example a bitmap 12 bits wide must be two + * bytes width. + * + * Tony: + * Incorporate mask tables similar to fbcon-cfb*.c in 2.4 API. This speeds + * up the code significantly. + * + * Code for depths not multiples of BITS_PER_LONG is still kludgy, which is + * still processed a bit at a time. + * + * Also need to add code to deal with cards endians that are different than + * the native cpu endians. I also need to deal with MSB position in the word. + */ +#include +#include +#include +#include +#include "fb_draw.h" + +#define DEBUG + +#ifdef DEBUG +#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt,__func__,## args) +#else +#define DPRINTK(fmt, args...) +#endif + +static const u32 cfb_tab8_be[] = { + 0x00000000,0x000000ff,0x0000ff00,0x0000ffff, + 0x00ff0000,0x00ff00ff,0x00ffff00,0x00ffffff, + 0xff000000,0xff0000ff,0xff00ff00,0xff00ffff, + 0xffff0000,0xffff00ff,0xffffff00,0xffffffff +}; + +static const u32 cfb_tab8_le[] = { + 0x00000000,0xff000000,0x00ff0000,0xffff0000, + 0x0000ff00,0xff00ff00,0x00ffff00,0xffffff00, + 0x000000ff,0xff0000ff,0x00ff00ff,0xffff00ff, + 0x0000ffff,0xff00ffff,0x00ffffff,0xffffffff +}; + +static const u32 cfb_tab16_be[] = { + 0x00000000, 0x0000ffff, 0xffff0000, 0xffffffff +}; + +static const u32 cfb_tab16_le[] = { + 0x00000000, 0xffff0000, 0x0000ffff, 0xffffffff +}; + +static const u32 cfb_tab32[] = { + 0x00000000, 0xffffffff +}; + +#define FB_WRITEL fb_writel +#define FB_READL fb_readl + +static inline void color_imageblit(const struct fb_image *image, + struct fb_info *p, u8 __iomem *dst1, + u32 start_index, + u32 pitch_index) +{ + /* Draw the penguin */ + u32 __iomem *dst, *dst2; + u32 color = 0, val, shift; + int i, n, bpp = p->var.bits_per_pixel; + u32 null_bits = 32 - bpp; + u32 *palette = (u32 *) p->pseudo_palette; + const u8 *src = image->data; + u32 bswapmask = fb_compute_bswapmask(p); + + dst2 = (u32 __iomem *) dst1; + for (i = image->height; i--; ) { + n = image->width; + dst = (u32 __iomem *) dst1; + shift = 0; + val = 0; + + if (start_index) { + u32 start_mask = ~fb_shifted_pixels_mask_u32(p, + start_index, bswapmask); + val = FB_READL(dst) & start_mask; + shift = start_index; + } + while (n--) { + if (p->fix.visual == FB_VISUAL_TRUECOLOR || + p->fix.visual == FB_VISUAL_DIRECTCOLOR ) + color = palette[*src]; + else + color = *src; + color <<= FB_LEFT_POS(p, bpp); + val |= FB_SHIFT_HIGH(p, color, shift ^ bswapmask); + if (shift >= null_bits) { + FB_WRITEL(val, dst++); + + val = (shift == null_bits) ? 0 : + FB_SHIFT_LOW(p, color, 32 - shift); + } + shift += bpp; + shift &= (32 - 1); + src++; + } + if (shift) { + u32 end_mask = fb_shifted_pixels_mask_u32(p, shift, + bswapmask); + + FB_WRITEL((FB_READL(dst) & end_mask) | val, dst); + } + dst1 += p->fix.line_length; + if (pitch_index) { + dst2 += p->fix.line_length; + dst1 = (u8 __iomem *)((long __force)dst2 & ~(sizeof(u32) - 1)); + + start_index += pitch_index; + start_index &= 32 - 1; + } + } +} + +static inline void slow_imageblit(const struct fb_image *image, struct fb_info *p, + u8 __iomem *dst1, u32 fgcolor, + u32 bgcolor, + u32 start_index, + u32 pitch_index) +{ + u32 shift, color = 0, bpp = p->var.bits_per_pixel; + u32 __iomem *dst, *dst2; + u32 val, pitch = p->fix.line_length; + u32 null_bits = 32 - bpp; + u32 spitch = (image->width+7)/8; + const u8 *src = image->data, *s; + u32 i, j, l; + u32 bswapmask = fb_compute_bswapmask(p); + + dst2 = (u32 __iomem *) dst1; + fgcolor <<= FB_LEFT_POS(p, bpp); + bgcolor <<= FB_LEFT_POS(p, bpp); + + for (i = image->height; i--; ) { + shift = val = 0; + l = 8; + j = image->width; + dst = (u32 __iomem *) dst1; + s = src; + + /* write leading bits */ + if (start_index) { + u32 start_mask = ~fb_shifted_pixels_mask_u32(p, + start_index, bswapmask); + val = FB_READL(dst) & start_mask; + shift = start_index; + } + + while (j--) { + l--; + color = (*s & (1 << l)) ? fgcolor : bgcolor; + val |= FB_SHIFT_HIGH(p, color, shift ^ bswapmask); + + /* Did the bitshift spill bits to the next long? */ + if (shift >= null_bits) { + FB_WRITEL(val, dst++); + val = (shift == null_bits) ? 0 : + FB_SHIFT_LOW(p, color, 32 - shift); + } + shift += bpp; + shift &= (32 - 1); + if (!l) { l = 8; s++; } + } + + /* write trailing bits */ + if (shift) { + u32 end_mask = fb_shifted_pixels_mask_u32(p, shift, + bswapmask); + + FB_WRITEL((FB_READL(dst) & end_mask) | val, dst); + } + + dst1 += pitch; + src += spitch; + if (pitch_index) { + dst2 += pitch; + dst1 = (u8 __iomem *)((long __force)dst2 & ~(sizeof(u32) - 1)); + start_index += pitch_index; + start_index &= 32 - 1; + } + + } +} + +/* + * fast_imageblit - optimized monochrome color expansion + * + * Only if: bits_per_pixel == 8, 16, or 32 + * image->width is divisible by pixel/dword (ppw); + * fix->line_legth is divisible by 4; + * beginning and end of a scanline is dword aligned + */ +static inline void fast_imageblit(const struct fb_image *image, struct fb_info *p, + u8 __iomem *dst1, u32 fgcolor, + u32 bgcolor) +{ + u32 fgx = fgcolor, bgx = bgcolor, bpp = p->var.bits_per_pixel; + u32 ppw = 32/bpp, spitch = (image->width + 7)/8; + u32 bit_mask, end_mask, eorx, shift; + const char *s = image->data, *src; + u32 __iomem *dst; + const u32 *tab = NULL; + int i, j, k; + + switch (bpp) { + case 8: + tab = fb_be_math(p) ? cfb_tab8_be : cfb_tab8_le; + break; + case 16: + tab = fb_be_math(p) ? cfb_tab16_be : cfb_tab16_le; + break; + case 32: + default: + tab = cfb_tab32; + break; + } + + for (i = ppw-1; i--; ) { + fgx <<= bpp; + bgx <<= bpp; + fgx |= fgcolor; + bgx |= bgcolor; + } + + bit_mask = (1 << ppw) - 1; + eorx = fgx ^ bgx; + k = image->width/ppw; + + for (i = image->height; i--; ) { + dst = (u32 __iomem *) dst1, shift = 8; src = s; + + for (j = k; j--; ) { + shift -= ppw; + end_mask = tab[(*src >> shift) & bit_mask]; + FB_WRITEL((end_mask & eorx)^bgx, dst++); + if (!shift) { shift = 8; src++; } + } + dst1 += p->fix.line_length; + s += spitch; + } +} + +void cfb_imageblit(struct fb_info *p, const struct fb_image *image) +{ + u32 fgcolor, bgcolor, start_index, bitstart, pitch_index = 0; + u32 bpl = sizeof(u32), bpp = p->var.bits_per_pixel; + u32 width = image->width; + u32 dx = image->dx, dy = image->dy; + u8 __iomem *dst1; + + if (p->state != FBINFO_STATE_RUNNING) + return; + + bitstart = (dy * p->fix.line_length * 8) + (dx * bpp); + start_index = bitstart & (32 - 1); + pitch_index = (p->fix.line_length & (bpl - 1)) * 8; + + bitstart /= 8; + bitstart &= ~(bpl - 1); + dst1 = p->screen_base + bitstart; + + if (p->fbops->fb_sync) + p->fbops->fb_sync(p); + + if (image->depth == 1) { + if (p->fix.visual == FB_VISUAL_TRUECOLOR || + p->fix.visual == FB_VISUAL_DIRECTCOLOR) { + fgcolor = ((u32*)(p->pseudo_palette))[image->fg_color]; + bgcolor = ((u32*)(p->pseudo_palette))[image->bg_color]; + } else { + fgcolor = image->fg_color; + bgcolor = image->bg_color; + } + + if (32 % bpp == 0 && !start_index && !pitch_index && + ((width & (32/bpp-1)) == 0) && + bpp >= 8 && bpp <= 32) + fast_imageblit(image, p, dst1, fgcolor, bgcolor); + else + slow_imageblit(image, p, dst1, fgcolor, bgcolor, + start_index, pitch_index); + } else + color_imageblit(image, p, dst1, start_index, pitch_index); +} + +EXPORT_SYMBOL(cfb_imageblit); + +MODULE_AUTHOR("James Simmons "); +MODULE_DESCRIPTION("Generic software accelerated imaging drawing"); +MODULE_LICENSE("GPL"); + diff --git a/drivers/video/fbdev/core/fb_ddc.c b/drivers/video/fbdev/core/fb_ddc.c new file mode 100644 index 0000000..94322cc --- /dev/null +++ b/drivers/video/fbdev/core/fb_ddc.c @@ -0,0 +1,119 @@ +/* + * drivers/video/fb_ddc.c - DDC/EDID read support. + * + * Copyright (C) 2006 Dennis Munsie + * + * 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 +#include +#include +#include +#include +#include + +#include "../edid.h" + +#define DDC_ADDR 0x50 + +static unsigned char *fb_do_probe_ddc_edid(struct i2c_adapter *adapter) +{ + unsigned char start = 0x0; + unsigned char *buf = kmalloc(EDID_LENGTH, GFP_KERNEL); + struct i2c_msg msgs[] = { + { + .addr = DDC_ADDR, + .flags = 0, + .len = 1, + .buf = &start, + }, { + .addr = DDC_ADDR, + .flags = I2C_M_RD, + .len = EDID_LENGTH, + .buf = buf, + } + }; + + if (!buf) { + dev_warn(&adapter->dev, "unable to allocate memory for EDID " + "block.\n"); + return NULL; + } + + if (i2c_transfer(adapter, msgs, 2) == 2) + return buf; + + dev_warn(&adapter->dev, "unable to read EDID block.\n"); + kfree(buf); + return NULL; +} + +unsigned char *fb_ddc_read(struct i2c_adapter *adapter) +{ + struct i2c_algo_bit_data *algo_data = adapter->algo_data; + unsigned char *edid = NULL; + int i, j; + + algo_data->setscl(algo_data->data, 1); + + for (i = 0; i < 3; i++) { + /* For some old monitors we need the + * following process to initialize/stop DDC + */ + algo_data->setsda(algo_data->data, 1); + msleep(13); + + algo_data->setscl(algo_data->data, 1); + for (j = 0; j < 5; j++) { + msleep(10); + if (algo_data->getscl(algo_data->data)) + break; + } + if (j == 5) + continue; + + algo_data->setsda(algo_data->data, 0); + msleep(15); + algo_data->setscl(algo_data->data, 0); + msleep(15); + algo_data->setsda(algo_data->data, 1); + msleep(15); + + /* Do the real work */ + edid = fb_do_probe_ddc_edid(adapter); + algo_data->setsda(algo_data->data, 0); + algo_data->setscl(algo_data->data, 0); + msleep(15); + + algo_data->setscl(algo_data->data, 1); + for (j = 0; j < 10; j++) { + msleep(10); + if (algo_data->getscl(algo_data->data)) + break; + } + + algo_data->setsda(algo_data->data, 1); + msleep(15); + algo_data->setscl(algo_data->data, 0); + algo_data->setsda(algo_data->data, 0); + if (edid) + break; + } + /* Release the DDC lines when done or the Apple Cinema HD display + * will switch off + */ + algo_data->setsda(algo_data->data, 1); + algo_data->setscl(algo_data->data, 1); + + adapter->class |= I2C_CLASS_DDC; + return edid; +} + +EXPORT_SYMBOL_GPL(fb_ddc_read); + +MODULE_AUTHOR("Dennis Munsie "); +MODULE_DESCRIPTION("DDC/EDID reading support"); +MODULE_LICENSE("GPL"); diff --git a/drivers/video/fbdev/core/fb_defio.c b/drivers/video/fbdev/core/fb_defio.c new file mode 100644 index 0000000..900aa4e --- /dev/null +++ b/drivers/video/fbdev/core/fb_defio.c @@ -0,0 +1,245 @@ +/* + * linux/drivers/video/fb_defio.c + * + * Copyright (C) 2006 Jaya Kumar + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* to support deferred IO */ +#include +#include + +static struct page *fb_deferred_io_page(struct fb_info *info, unsigned long offs) +{ + void *screen_base = (void __force *) info->screen_base; + struct page *page; + + if (is_vmalloc_addr(screen_base + offs)) + page = vmalloc_to_page(screen_base + offs); + else + page = pfn_to_page((info->fix.smem_start + offs) >> PAGE_SHIFT); + + return page; +} + +/* this is to find and return the vmalloc-ed fb pages */ +static int fb_deferred_io_fault(struct vm_area_struct *vma, + struct vm_fault *vmf) +{ + unsigned long offset; + struct page *page; + struct fb_info *info = vma->vm_private_data; + + offset = vmf->pgoff << PAGE_SHIFT; + if (offset >= info->fix.smem_len) + return VM_FAULT_SIGBUS; + + page = fb_deferred_io_page(info, offset); + if (!page) + return VM_FAULT_SIGBUS; + + get_page(page); + + if (vma->vm_file) + page->mapping = vma->vm_file->f_mapping; + else + printk(KERN_ERR "no mapping available\n"); + + BUG_ON(!page->mapping); + page->index = vmf->pgoff; + + vmf->page = page; + return 0; +} + +int fb_deferred_io_fsync(struct file *file, loff_t start, loff_t end, int datasync) +{ + struct fb_info *info = file->private_data; + struct inode *inode = file_inode(file); + int err = filemap_write_and_wait_range(inode->i_mapping, start, end); + if (err) + return err; + + /* Skip if deferred io is compiled-in but disabled on this fbdev */ + if (!info->fbdefio) + return 0; + + mutex_lock(&inode->i_mutex); + /* Kill off the delayed work */ + cancel_delayed_work_sync(&info->deferred_work); + + /* Run it immediately */ + err = schedule_delayed_work(&info->deferred_work, 0); + mutex_unlock(&inode->i_mutex); + return err; +} +EXPORT_SYMBOL_GPL(fb_deferred_io_fsync); + +/* vm_ops->page_mkwrite handler */ +static int fb_deferred_io_mkwrite(struct vm_area_struct *vma, + struct vm_fault *vmf) +{ + struct page *page = vmf->page; + struct fb_info *info = vma->vm_private_data; + struct fb_deferred_io *fbdefio = info->fbdefio; + struct page *cur; + + /* this is a callback we get when userspace first tries to + write to the page. we schedule a workqueue. that workqueue + will eventually mkclean the touched pages and execute the + deferred framebuffer IO. then if userspace touches a page + again, we repeat the same scheme */ + + file_update_time(vma->vm_file); + + /* protect against the workqueue changing the page list */ + mutex_lock(&fbdefio->lock); + + /* first write in this cycle, notify the driver */ + if (fbdefio->first_io && list_empty(&fbdefio->pagelist)) + fbdefio->first_io(info); + + /* + * We want the page to remain locked from ->page_mkwrite until + * the PTE is marked dirty to avoid page_mkclean() being called + * before the PTE is updated, which would leave the page ignored + * by defio. + * Do this by locking the page here and informing the caller + * about it with VM_FAULT_LOCKED. + */ + lock_page(page); + + /* we loop through the pagelist before adding in order + to keep the pagelist sorted */ + list_for_each_entry(cur, &fbdefio->pagelist, lru) { + /* this check is to catch the case where a new + process could start writing to the same page + through a new pte. this new access can cause the + mkwrite even when the original ps's pte is marked + writable */ + if (unlikely(cur == page)) + goto page_already_added; + else if (cur->index > page->index) + break; + } + + list_add_tail(&page->lru, &cur->lru); + +page_already_added: + mutex_unlock(&fbdefio->lock); + + /* come back after delay to process the deferred IO */ + schedule_delayed_work(&info->deferred_work, fbdefio->delay); + return VM_FAULT_LOCKED; +} + +static const struct vm_operations_struct fb_deferred_io_vm_ops = { + .fault = fb_deferred_io_fault, + .page_mkwrite = fb_deferred_io_mkwrite, +}; + +static int fb_deferred_io_set_page_dirty(struct page *page) +{ + if (!PageDirty(page)) + SetPageDirty(page); + return 0; +} + +static const struct address_space_operations fb_deferred_io_aops = { + .set_page_dirty = fb_deferred_io_set_page_dirty, +}; + +static int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma) +{ + vma->vm_ops = &fb_deferred_io_vm_ops; + vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; + if (!(info->flags & FBINFO_VIRTFB)) + vma->vm_flags |= VM_IO; + vma->vm_private_data = info; + return 0; +} + +/* workqueue callback */ +static void fb_deferred_io_work(struct work_struct *work) +{ + struct fb_info *info = container_of(work, struct fb_info, + deferred_work.work); + struct list_head *node, *next; + struct page *cur; + struct fb_deferred_io *fbdefio = info->fbdefio; + + /* here we mkclean the pages, then do all deferred IO */ + mutex_lock(&fbdefio->lock); + list_for_each_entry(cur, &fbdefio->pagelist, lru) { + lock_page(cur); + page_mkclean(cur); + unlock_page(cur); + } + + /* driver's callback with pagelist */ + fbdefio->deferred_io(info, &fbdefio->pagelist); + + /* clear the list */ + list_for_each_safe(node, next, &fbdefio->pagelist) { + list_del(node); + } + mutex_unlock(&fbdefio->lock); +} + +void fb_deferred_io_init(struct fb_info *info) +{ + struct fb_deferred_io *fbdefio = info->fbdefio; + + BUG_ON(!fbdefio); + mutex_init(&fbdefio->lock); + info->fbops->fb_mmap = fb_deferred_io_mmap; + INIT_DELAYED_WORK(&info->deferred_work, fb_deferred_io_work); + INIT_LIST_HEAD(&fbdefio->pagelist); + if (fbdefio->delay == 0) /* set a default of 1 s */ + fbdefio->delay = HZ; +} +EXPORT_SYMBOL_GPL(fb_deferred_io_init); + +void fb_deferred_io_open(struct fb_info *info, + struct inode *inode, + struct file *file) +{ + file->f_mapping->a_ops = &fb_deferred_io_aops; +} +EXPORT_SYMBOL_GPL(fb_deferred_io_open); + +void fb_deferred_io_cleanup(struct fb_info *info) +{ + struct fb_deferred_io *fbdefio = info->fbdefio; + struct page *page; + int i; + + BUG_ON(!fbdefio); + cancel_delayed_work_sync(&info->deferred_work); + + /* clear out the mapping that we setup */ + for (i = 0 ; i < info->fix.smem_len; i += PAGE_SIZE) { + page = fb_deferred_io_page(info, i); + page->mapping = NULL; + } + + info->fbops->fb_mmap = NULL; + mutex_destroy(&fbdefio->lock); +} +EXPORT_SYMBOL_GPL(fb_deferred_io_cleanup); + +MODULE_LICENSE("GPL"); diff --git a/drivers/video/fbdev/core/fb_draw.h b/drivers/video/fbdev/core/fb_draw.h new file mode 100644 index 0000000..624ee11 --- /dev/null +++ b/drivers/video/fbdev/core/fb_draw.h @@ -0,0 +1,186 @@ +#ifndef _FB_DRAW_H +#define _FB_DRAW_H + +#include +#include +#include + + /* + * Compose two values, using a bitmask as decision value + * This is equivalent to (a & mask) | (b & ~mask) + */ + +static inline unsigned long +comp(unsigned long a, unsigned long b, unsigned long mask) +{ + return ((a ^ b) & mask) ^ b; +} + + /* + * Create a pattern with the given pixel's color + */ + +#if BITS_PER_LONG == 64 +static inline unsigned long +pixel_to_pat( u32 bpp, u32 pixel) +{ + switch (bpp) { + case 1: + return 0xfffffffffffffffful*pixel; + case 2: + return 0x5555555555555555ul*pixel; + case 4: + return 0x1111111111111111ul*pixel; + case 8: + return 0x0101010101010101ul*pixel; + case 12: + return 0x1001001001001001ul*pixel; + case 16: + return 0x0001000100010001ul*pixel; + case 24: + return 0x0001000001000001ul*pixel; + case 32: + return 0x0000000100000001ul*pixel; + default: + WARN(1, "pixel_to_pat(): unsupported pixelformat %d\n", bpp); + return 0; + } +} +#else +static inline unsigned long +pixel_to_pat( u32 bpp, u32 pixel) +{ + switch (bpp) { + case 1: + return 0xfffffffful*pixel; + case 2: + return 0x55555555ul*pixel; + case 4: + return 0x11111111ul*pixel; + case 8: + return 0x01010101ul*pixel; + case 12: + return 0x01001001ul*pixel; + case 16: + return 0x00010001ul*pixel; + case 24: + return 0x01000001ul*pixel; + case 32: + return 0x00000001ul*pixel; + default: + WARN(1, "pixel_to_pat(): unsupported pixelformat %d\n", bpp); + return 0; + } +} +#endif + +#ifdef CONFIG_FB_CFB_REV_PIXELS_IN_BYTE +#if BITS_PER_LONG == 64 +#define REV_PIXELS_MASK1 0x5555555555555555ul +#define REV_PIXELS_MASK2 0x3333333333333333ul +#define REV_PIXELS_MASK4 0x0f0f0f0f0f0f0f0ful +#else +#define REV_PIXELS_MASK1 0x55555555ul +#define REV_PIXELS_MASK2 0x33333333ul +#define REV_PIXELS_MASK4 0x0f0f0f0ful +#endif + +static inline unsigned long fb_rev_pixels_in_long(unsigned long val, + u32 bswapmask) +{ + if (bswapmask & 1) + val = comp(val >> 1, val << 1, REV_PIXELS_MASK1); + if (bswapmask & 2) + val = comp(val >> 2, val << 2, REV_PIXELS_MASK2); + if (bswapmask & 3) + val = comp(val >> 4, val << 4, REV_PIXELS_MASK4); + return val; +} + +static inline u32 fb_shifted_pixels_mask_u32(struct fb_info *p, u32 index, + u32 bswapmask) +{ + u32 mask; + + if (!bswapmask) { + mask = FB_SHIFT_HIGH(p, ~(u32)0, index); + } else { + mask = 0xff << FB_LEFT_POS(p, 8); + mask = FB_SHIFT_LOW(p, mask, index & (bswapmask)) & mask; + mask = FB_SHIFT_HIGH(p, mask, index & ~(bswapmask)); +#if defined(__i386__) || defined(__x86_64__) + /* Shift argument is limited to 0 - 31 on x86 based CPU's */ + if(index + bswapmask < 32) +#endif + mask |= FB_SHIFT_HIGH(p, ~(u32)0, + (index + bswapmask) & ~(bswapmask)); + } + return mask; +} + +static inline unsigned long fb_shifted_pixels_mask_long(struct fb_info *p, + u32 index, + u32 bswapmask) +{ + unsigned long mask; + + if (!bswapmask) { + mask = FB_SHIFT_HIGH(p, ~0UL, index); + } else { + mask = 0xff << FB_LEFT_POS(p, 8); + mask = FB_SHIFT_LOW(p, mask, index & (bswapmask)) & mask; + mask = FB_SHIFT_HIGH(p, mask, index & ~(bswapmask)); +#if defined(__i386__) || defined(__x86_64__) + /* Shift argument is limited to 0 - 31 on x86 based CPU's */ + if(index + bswapmask < BITS_PER_LONG) +#endif + mask |= FB_SHIFT_HIGH(p, ~0UL, + (index + bswapmask) & ~(bswapmask)); + } + return mask; +} + + +static inline u32 fb_compute_bswapmask(struct fb_info *info) +{ + u32 bswapmask = 0; + unsigned bpp = info->var.bits_per_pixel; + + if ((bpp < 8) && (info->var.nonstd & FB_NONSTD_REV_PIX_IN_B)) { + /* + * Reversed order of pixel layout in bytes + * works only for 1, 2 and 4 bpp + */ + bswapmask = 7 - bpp + 1; + } + return bswapmask; +} + +#else /* CONFIG_FB_CFB_REV_PIXELS_IN_BYTE */ + +static inline unsigned long fb_rev_pixels_in_long(unsigned long val, + u32 bswapmask) +{ + return val; +} + +#define fb_shifted_pixels_mask_u32(p, i, b) FB_SHIFT_HIGH((p), ~(u32)0, (i)) +#define fb_shifted_pixels_mask_long(p, i, b) FB_SHIFT_HIGH((p), ~0UL, (i)) +#define fb_compute_bswapmask(...) 0 + +#endif /* CONFIG_FB_CFB_REV_PIXELS_IN_BYTE */ + +#define cpu_to_le_long _cpu_to_le_long(BITS_PER_LONG) +#define _cpu_to_le_long(x) __cpu_to_le_long(x) +#define __cpu_to_le_long(x) cpu_to_le##x + +#define le_long_to_cpu _le_long_to_cpu(BITS_PER_LONG) +#define _le_long_to_cpu(x) __le_long_to_cpu(x) +#define __le_long_to_cpu(x) le##x##_to_cpu + +static inline unsigned long rolx(unsigned long word, unsigned int shift, unsigned int x) +{ + return (word << shift) | (word >> (x - shift)); +} + +#endif /* FB_DRAW_H */ diff --git a/drivers/video/fbdev/core/fb_notify.c b/drivers/video/fbdev/core/fb_notify.c new file mode 100644 index 0000000..74c2da5 --- /dev/null +++ b/drivers/video/fbdev/core/fb_notify.c @@ -0,0 +1,47 @@ +/* + * linux/drivers/video/fb_notify.c + * + * Copyright (C) 2006 Antonino Daplas + * + * 2001 - Documented with DocBook + * - Brad Douglas + * + * 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 +#include +#include + +static BLOCKING_NOTIFIER_HEAD(fb_notifier_list); + +/** + * fb_register_client - register a client notifier + * @nb: notifier block to callback on events + */ +int fb_register_client(struct notifier_block *nb) +{ + return blocking_notifier_chain_register(&fb_notifier_list, nb); +} +EXPORT_SYMBOL(fb_register_client); + +/** + * fb_unregister_client - unregister a client notifier + * @nb: notifier block to callback on events + */ +int fb_unregister_client(struct notifier_block *nb) +{ + return blocking_notifier_chain_unregister(&fb_notifier_list, nb); +} +EXPORT_SYMBOL(fb_unregister_client); + +/** + * fb_notifier_call_chain - notify clients of fb_events + * + */ +int fb_notifier_call_chain(unsigned long val, void *v) +{ + return blocking_notifier_call_chain(&fb_notifier_list, val, v); +} +EXPORT_SYMBOL_GPL(fb_notifier_call_chain); diff --git a/drivers/video/fbdev/core/fb_sys_fops.c b/drivers/video/fbdev/core/fb_sys_fops.c new file mode 100644 index 0000000..ff275d7 --- /dev/null +++ b/drivers/video/fbdev/core/fb_sys_fops.c @@ -0,0 +1,104 @@ +/* + * linux/drivers/video/fb_sys_read.c - Generic file operations where + * framebuffer is in system RAM + * + * Copyright (C) 2007 Antonino Daplas + * + * 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 +#include +#include + +ssize_t fb_sys_read(struct fb_info *info, char __user *buf, size_t count, + loff_t *ppos) +{ + unsigned long p = *ppos; + void *src; + int err = 0; + unsigned long total_size; + + if (info->state != FBINFO_STATE_RUNNING) + return -EPERM; + + total_size = info->screen_size; + + if (total_size == 0) + total_size = info->fix.smem_len; + + if (p >= total_size) + return 0; + + if (count >= total_size) + count = total_size; + + if (count + p > total_size) + count = total_size - p; + + src = (void __force *)(info->screen_base + p); + + if (info->fbops->fb_sync) + info->fbops->fb_sync(info); + + if (copy_to_user(buf, src, count)) + err = -EFAULT; + + if (!err) + *ppos += count; + + return (err) ? err : count; +} +EXPORT_SYMBOL_GPL(fb_sys_read); + +ssize_t fb_sys_write(struct fb_info *info, const char __user *buf, + size_t count, loff_t *ppos) +{ + unsigned long p = *ppos; + void *dst; + int err = 0; + unsigned long total_size; + + if (info->state != FBINFO_STATE_RUNNING) + return -EPERM; + + total_size = info->screen_size; + + if (total_size == 0) + total_size = info->fix.smem_len; + + if (p > total_size) + return -EFBIG; + + if (count > total_size) { + err = -EFBIG; + count = total_size; + } + + if (count + p > total_size) { + if (!err) + err = -ENOSPC; + + count = total_size - p; + } + + dst = (void __force *) (info->screen_base + p); + + if (info->fbops->fb_sync) + info->fbops->fb_sync(info); + + if (copy_from_user(dst, buf, count)) + err = -EFAULT; + + if (!err) + *ppos += count; + + return (err) ? err : count; +} +EXPORT_SYMBOL_GPL(fb_sys_write); + +MODULE_AUTHOR("Antonino Daplas "); +MODULE_DESCRIPTION("Generic file read (fb in system RAM)"); +MODULE_LICENSE("GPL"); diff --git a/drivers/video/fbdev/core/fbcmap.c b/drivers/video/fbdev/core/fbcmap.c new file mode 100644 index 0000000..f89245b --- /dev/null +++ b/drivers/video/fbdev/core/fbcmap.c @@ -0,0 +1,362 @@ +/* + * linux/drivers/video/fbcmap.c -- Colormap handling for frame buffer devices + * + * Created 15 Jun 1997 by Geert Uytterhoeven + * + * 2001 - Documented with DocBook + * - Brad Douglas + * + * 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 +#include +#include +#include +#include + +static u16 red2[] __read_mostly = { + 0x0000, 0xaaaa +}; +static u16 green2[] __read_mostly = { + 0x0000, 0xaaaa +}; +static u16 blue2[] __read_mostly = { + 0x0000, 0xaaaa +}; + +static u16 red4[] __read_mostly = { + 0x0000, 0xaaaa, 0x5555, 0xffff +}; +static u16 green4[] __read_mostly = { + 0x0000, 0xaaaa, 0x5555, 0xffff +}; +static u16 blue4[] __read_mostly = { + 0x0000, 0xaaaa, 0x5555, 0xffff +}; + +static u16 red8[] __read_mostly = { + 0x0000, 0x0000, 0x0000, 0x0000, 0xaaaa, 0xaaaa, 0xaaaa, 0xaaaa +}; +static u16 green8[] __read_mostly = { + 0x0000, 0x0000, 0xaaaa, 0xaaaa, 0x0000, 0x0000, 0x5555, 0xaaaa +}; +static u16 blue8[] __read_mostly = { + 0x0000, 0xaaaa, 0x0000, 0xaaaa, 0x0000, 0xaaaa, 0x0000, 0xaaaa +}; + +static u16 red16[] __read_mostly = { + 0x0000, 0x0000, 0x0000, 0x0000, 0xaaaa, 0xaaaa, 0xaaaa, 0xaaaa, + 0x5555, 0x5555, 0x5555, 0x5555, 0xffff, 0xffff, 0xffff, 0xffff +}; +static u16 green16[] __read_mostly = { + 0x0000, 0x0000, 0xaaaa, 0xaaaa, 0x0000, 0x0000, 0x5555, 0xaaaa, + 0x5555, 0x5555, 0xffff, 0xffff, 0x5555, 0x5555, 0xffff, 0xffff +}; +static u16 blue16[] __read_mostly = { + 0x0000, 0xaaaa, 0x0000, 0xaaaa, 0x0000, 0xaaaa, 0x0000, 0xaaaa, + 0x5555, 0xffff, 0x5555, 0xffff, 0x5555, 0xffff, 0x5555, 0xffff +}; + +static const struct fb_cmap default_2_colors = { + .len=2, .red=red2, .green=green2, .blue=blue2 +}; +static const struct fb_cmap default_8_colors = { + .len=8, .red=red8, .green=green8, .blue=blue8 +}; +static const struct fb_cmap default_4_colors = { + .len=4, .red=red4, .green=green4, .blue=blue4 +}; +static const struct fb_cmap default_16_colors = { + .len=16, .red=red16, .green=green16, .blue=blue16 +}; + + + +/** + * fb_alloc_cmap - allocate a colormap + * @cmap: frame buffer colormap structure + * @len: length of @cmap + * @transp: boolean, 1 if there is transparency, 0 otherwise + * @flags: flags for kmalloc memory allocation + * + * Allocates memory for a colormap @cmap. @len is the + * number of entries in the palette. + * + * Returns negative errno on error, or zero on success. + * + */ + +int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags) +{ + int size = len * sizeof(u16); + int ret = -ENOMEM; + + if (cmap->len != len) { + fb_dealloc_cmap(cmap); + if (!len) + return 0; + + cmap->red = kmalloc(size, flags); + if (!cmap->red) + goto fail; + cmap->green = kmalloc(size, flags); + if (!cmap->green) + goto fail; + cmap->blue = kmalloc(size, flags); + if (!cmap->blue) + goto fail; + if (transp) { + cmap->transp = kmalloc(size, flags); + if (!cmap->transp) + goto fail; + } else { + cmap->transp = NULL; + } + } + cmap->start = 0; + cmap->len = len; + ret = fb_copy_cmap(fb_default_cmap(len), cmap); + if (ret) + goto fail; + return 0; + +fail: + fb_dealloc_cmap(cmap); + return ret; +} + +int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp) +{ + return fb_alloc_cmap_gfp(cmap, len, transp, GFP_ATOMIC); +} + +/** + * fb_dealloc_cmap - deallocate a colormap + * @cmap: frame buffer colormap structure + * + * Deallocates a colormap that was previously allocated with + * fb_alloc_cmap(). + * + */ + +void fb_dealloc_cmap(struct fb_cmap *cmap) +{ + kfree(cmap->red); + kfree(cmap->green); + kfree(cmap->blue); + kfree(cmap->transp); + + cmap->red = cmap->green = cmap->blue = cmap->transp = NULL; + cmap->len = 0; +} + +/** + * fb_copy_cmap - copy a colormap + * @from: frame buffer colormap structure + * @to: frame buffer colormap structure + * + * Copy contents of colormap from @from to @to. + */ + +int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to) +{ + int tooff = 0, fromoff = 0; + int size; + + if (to->start > from->start) + fromoff = to->start - from->start; + else + tooff = from->start - to->start; + size = to->len - tooff; + if (size > (int) (from->len - fromoff)) + size = from->len - fromoff; + if (size <= 0) + return -EINVAL; + size *= sizeof(u16); + + memcpy(to->red+tooff, from->red+fromoff, size); + memcpy(to->green+tooff, from->green+fromoff, size); + memcpy(to->blue+tooff, from->blue+fromoff, size); + if (from->transp && to->transp) + memcpy(to->transp+tooff, from->transp+fromoff, size); + return 0; +} + +int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to) +{ + int tooff = 0, fromoff = 0; + int size; + + if (to->start > from->start) + fromoff = to->start - from->start; + else + tooff = from->start - to->start; + size = to->len - tooff; + if (size > (int) (from->len - fromoff)) + size = from->len - fromoff; + if (size <= 0) + return -EINVAL; + size *= sizeof(u16); + + if (copy_to_user(to->red+tooff, from->red+fromoff, size)) + return -EFAULT; + if (copy_to_user(to->green+tooff, from->green+fromoff, size)) + return -EFAULT; + if (copy_to_user(to->blue+tooff, from->blue+fromoff, size)) + return -EFAULT; + if (from->transp && to->transp) + if (copy_to_user(to->transp+tooff, from->transp+fromoff, size)) + return -EFAULT; + return 0; +} + +/** + * fb_set_cmap - set the colormap + * @cmap: frame buffer colormap structure + * @info: frame buffer info structure + * + * Sets the colormap @cmap for a screen of device @info. + * + * Returns negative errno on error, or zero on success. + * + */ + +int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *info) +{ + int i, start, rc = 0; + u16 *red, *green, *blue, *transp; + u_int hred, hgreen, hblue, htransp = 0xffff; + + red = cmap->red; + green = cmap->green; + blue = cmap->blue; + transp = cmap->transp; + start = cmap->start; + + if (start < 0 || (!info->fbops->fb_setcolreg && + !info->fbops->fb_setcmap)) + return -EINVAL; + if (info->fbops->fb_setcmap) { + rc = info->fbops->fb_setcmap(cmap, info); + } else { + for (i = 0; i < cmap->len; i++) { + hred = *red++; + hgreen = *green++; + hblue = *blue++; + if (transp) + htransp = *transp++; + if (info->fbops->fb_setcolreg(start++, + hred, hgreen, hblue, + htransp, info)) + break; + } + } + if (rc == 0) + fb_copy_cmap(cmap, &info->cmap); + + return rc; +} + +int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *info) +{ + int rc, size = cmap->len * sizeof(u16); + struct fb_cmap umap; + + if (size < 0 || size < cmap->len) + return -E2BIG; + + memset(&umap, 0, sizeof(struct fb_cmap)); + rc = fb_alloc_cmap_gfp(&umap, cmap->len, cmap->transp != NULL, + GFP_KERNEL); + if (rc) + return rc; + if (copy_from_user(umap.red, cmap->red, size) || + copy_from_user(umap.green, cmap->green, size) || + copy_from_user(umap.blue, cmap->blue, size) || + (cmap->transp && copy_from_user(umap.transp, cmap->transp, size))) { + rc = -EFAULT; + goto out; + } + umap.start = cmap->start; + if (!lock_fb_info(info)) { + rc = -ENODEV; + goto out; + } + + rc = fb_set_cmap(&umap, info); + unlock_fb_info(info); +out: + fb_dealloc_cmap(&umap); + return rc; +} + +/** + * fb_default_cmap - get default colormap + * @len: size of palette for a depth + * + * Gets the default colormap for a specific screen depth. @len + * is the size of the palette for a particular screen depth. + * + * Returns pointer to a frame buffer colormap structure. + * + */ + +const struct fb_cmap *fb_default_cmap(int len) +{ + if (len <= 2) + return &default_2_colors; + if (len <= 4) + return &default_4_colors; + if (len <= 8) + return &default_8_colors; + return &default_16_colors; +} + + +/** + * fb_invert_cmaps - invert all defaults colormaps + * + * Invert all default colormaps. + * + */ + +void fb_invert_cmaps(void) +{ + u_int i; + + for (i = 0; i < ARRAY_SIZE(red2); i++) { + red2[i] = ~red2[i]; + green2[i] = ~green2[i]; + blue2[i] = ~blue2[i]; + } + for (i = 0; i < ARRAY_SIZE(red4); i++) { + red4[i] = ~red4[i]; + green4[i] = ~green4[i]; + blue4[i] = ~blue4[i]; + } + for (i = 0; i < ARRAY_SIZE(red8); i++) { + red8[i] = ~red8[i]; + green8[i] = ~green8[i]; + blue8[i] = ~blue8[i]; + } + for (i = 0; i < ARRAY_SIZE(red16); i++) { + red16[i] = ~red16[i]; + green16[i] = ~green16[i]; + blue16[i] = ~blue16[i]; + } +} + + + /* + * Visible symbols for modules + */ + +EXPORT_SYMBOL(fb_alloc_cmap); +EXPORT_SYMBOL(fb_dealloc_cmap); +EXPORT_SYMBOL(fb_copy_cmap); +EXPORT_SYMBOL(fb_set_cmap); +EXPORT_SYMBOL(fb_default_cmap); +EXPORT_SYMBOL(fb_invert_cmaps); diff --git a/drivers/video/fbdev/core/fbcvt.c b/drivers/video/fbdev/core/fbcvt.c new file mode 100644 index 0000000..7cb715d --- /dev/null +++ b/drivers/video/fbdev/core/fbcvt.c @@ -0,0 +1,379 @@ +/* + * linux/drivers/video/fbcvt.c - VESA(TM) Coordinated Video Timings + * + * Copyright (C) 2005 Antonino Daplas + * + * Based from the VESA(TM) Coordinated Video Timing Generator by + * Graham Loveridge April 9, 2003 available at + * http://www.elo.utfsm.cl/~elo212/docs/CVTd6r1.xls + * + * 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 +#include + +#define FB_CVT_CELLSIZE 8 +#define FB_CVT_GTF_C 40 +#define FB_CVT_GTF_J 20 +#define FB_CVT_GTF_K 128 +#define FB_CVT_GTF_M 600 +#define FB_CVT_MIN_VSYNC_BP 550 +#define FB_CVT_MIN_VPORCH 3 +#define FB_CVT_MIN_BPORCH 6 + +#define FB_CVT_RB_MIN_VBLANK 460 +#define FB_CVT_RB_HBLANK 160 +#define FB_CVT_RB_V_FPORCH 3 + +#define FB_CVT_FLAG_REDUCED_BLANK 1 +#define FB_CVT_FLAG_MARGINS 2 +#define FB_CVT_FLAG_INTERLACED 4 + +struct fb_cvt_data { + u32 xres; + u32 yres; + u32 refresh; + u32 f_refresh; + u32 pixclock; + u32 hperiod; + u32 hblank; + u32 hfreq; + u32 htotal; + u32 vtotal; + u32 vsync; + u32 hsync; + u32 h_front_porch; + u32 h_back_porch; + u32 v_front_porch; + u32 v_back_porch; + u32 h_margin; + u32 v_margin; + u32 interlace; + u32 aspect_ratio; + u32 active_pixels; + u32 flags; + u32 status; +}; + +static const unsigned char fb_cvt_vbi_tab[] = { + 4, /* 4:3 */ + 5, /* 16:9 */ + 6, /* 16:10 */ + 7, /* 5:4 */ + 7, /* 15:9 */ + 8, /* reserved */ + 9, /* reserved */ + 10 /* custom */ +}; + +/* returns hperiod * 1000 */ +static u32 fb_cvt_hperiod(struct fb_cvt_data *cvt) +{ + u32 num = 1000000000/cvt->f_refresh; + u32 den; + + if (cvt->flags & FB_CVT_FLAG_REDUCED_BLANK) { + num -= FB_CVT_RB_MIN_VBLANK * 1000; + den = 2 * (cvt->yres/cvt->interlace + 2 * cvt->v_margin); + } else { + num -= FB_CVT_MIN_VSYNC_BP * 1000; + den = 2 * (cvt->yres/cvt->interlace + cvt->v_margin * 2 + + FB_CVT_MIN_VPORCH + cvt->interlace/2); + } + + return 2 * (num/den); +} + +/* returns ideal duty cycle * 1000 */ +static u32 fb_cvt_ideal_duty_cycle(struct fb_cvt_data *cvt) +{ + u32 c_prime = (FB_CVT_GTF_C - FB_CVT_GTF_J) * + (FB_CVT_GTF_K) + 256 * FB_CVT_GTF_J; + u32 m_prime = (FB_CVT_GTF_K * FB_CVT_GTF_M); + u32 h_period_est = cvt->hperiod; + + return (1000 * c_prime - ((m_prime * h_period_est)/1000))/256; +} + +static u32 fb_cvt_hblank(struct fb_cvt_data *cvt) +{ + u32 hblank = 0; + + if (cvt->flags & FB_CVT_FLAG_REDUCED_BLANK) + hblank = FB_CVT_RB_HBLANK; + else { + u32 ideal_duty_cycle = fb_cvt_ideal_duty_cycle(cvt); + u32 active_pixels = cvt->active_pixels; + + if (ideal_duty_cycle < 20000) + hblank = (active_pixels * 20000)/ + (100000 - 20000); + else { + hblank = (active_pixels * ideal_duty_cycle)/ + (100000 - ideal_duty_cycle); + } + } + + hblank &= ~((2 * FB_CVT_CELLSIZE) - 1); + + return hblank; +} + +static u32 fb_cvt_hsync(struct fb_cvt_data *cvt) +{ + u32 hsync; + + if (cvt->flags & FB_CVT_FLAG_REDUCED_BLANK) + hsync = 32; + else + hsync = (FB_CVT_CELLSIZE * cvt->htotal)/100; + + hsync &= ~(FB_CVT_CELLSIZE - 1); + return hsync; +} + +static u32 fb_cvt_vbi_lines(struct fb_cvt_data *cvt) +{ + u32 vbi_lines, min_vbi_lines, act_vbi_lines; + + if (cvt->flags & FB_CVT_FLAG_REDUCED_BLANK) { + vbi_lines = (1000 * FB_CVT_RB_MIN_VBLANK)/cvt->hperiod + 1; + min_vbi_lines = FB_CVT_RB_V_FPORCH + cvt->vsync + + FB_CVT_MIN_BPORCH; + + } else { + vbi_lines = (FB_CVT_MIN_VSYNC_BP * 1000)/cvt->hperiod + 1 + + FB_CVT_MIN_VPORCH; + min_vbi_lines = cvt->vsync + FB_CVT_MIN_BPORCH + + FB_CVT_MIN_VPORCH; + } + + if (vbi_lines < min_vbi_lines) + act_vbi_lines = min_vbi_lines; + else + act_vbi_lines = vbi_lines; + + return act_vbi_lines; +} + +static u32 fb_cvt_vtotal(struct fb_cvt_data *cvt) +{ + u32 vtotal = cvt->yres/cvt->interlace; + + vtotal += 2 * cvt->v_margin + cvt->interlace/2 + fb_cvt_vbi_lines(cvt); + vtotal |= cvt->interlace/2; + + return vtotal; +} + +static u32 fb_cvt_pixclock(struct fb_cvt_data *cvt) +{ + u32 pixclock; + + if (cvt->flags & FB_CVT_FLAG_REDUCED_BLANK) + pixclock = (cvt->f_refresh * cvt->vtotal * cvt->htotal)/1000; + else + pixclock = (cvt->htotal * 1000000)/cvt->hperiod; + + pixclock /= 250; + pixclock *= 250; + pixclock *= 1000; + + return pixclock; +} + +static u32 fb_cvt_aspect_ratio(struct fb_cvt_data *cvt) +{ + u32 xres = cvt->xres; + u32 yres = cvt->yres; + u32 aspect = -1; + + if (xres == (yres * 4)/3 && !((yres * 4) % 3)) + aspect = 0; + else if (xres == (yres * 16)/9 && !((yres * 16) % 9)) + aspect = 1; + else if (xres == (yres * 16)/10 && !((yres * 16) % 10)) + aspect = 2; + else if (xres == (yres * 5)/4 && !((yres * 5) % 4)) + aspect = 3; + else if (xres == (yres * 15)/9 && !((yres * 15) % 9)) + aspect = 4; + else { + printk(KERN_INFO "fbcvt: Aspect ratio not CVT " + "standard\n"); + aspect = 7; + cvt->status = 1; + } + + return aspect; +} + +static void fb_cvt_print_name(struct fb_cvt_data *cvt) +{ + u32 pixcount, pixcount_mod; + int cnt = 255, offset = 0, read = 0; + u8 *buf = kzalloc(256, GFP_KERNEL); + + if (!buf) + return; + + pixcount = (cvt->xres * (cvt->yres/cvt->interlace))/1000000; + pixcount_mod = (cvt->xres * (cvt->yres/cvt->interlace)) % 1000000; + pixcount_mod /= 1000; + + read = snprintf(buf+offset, cnt, "fbcvt: %dx%d@%d: CVT Name - ", + cvt->xres, cvt->yres, cvt->refresh); + offset += read; + cnt -= read; + + if (cvt->status) + snprintf(buf+offset, cnt, "Not a CVT standard - %d.%03d Mega " + "Pixel Image\n", pixcount, pixcount_mod); + else { + if (pixcount) { + read = snprintf(buf+offset, cnt, "%d", pixcount); + cnt -= read; + offset += read; + } + + read = snprintf(buf+offset, cnt, ".%03dM", pixcount_mod); + cnt -= read; + offset += read; + + if (cvt->aspect_ratio == 0) + read = snprintf(buf+offset, cnt, "3"); + else if (cvt->aspect_ratio == 3) + read = snprintf(buf+offset, cnt, "4"); + else if (cvt->aspect_ratio == 1 || cvt->aspect_ratio == 4) + read = snprintf(buf+offset, cnt, "9"); + else if (cvt->aspect_ratio == 2) + read = snprintf(buf+offset, cnt, "A"); + else + read = 0; + cnt -= read; + offset += read; + + if (cvt->flags & FB_CVT_FLAG_REDUCED_BLANK) { + read = snprintf(buf+offset, cnt, "-R"); + cnt -= read; + offset += read; + } + } + + printk(KERN_INFO "%s\n", buf); + kfree(buf); +} + +static void fb_cvt_convert_to_mode(struct fb_cvt_data *cvt, + struct fb_videomode *mode) +{ + mode->refresh = cvt->f_refresh; + mode->pixclock = KHZ2PICOS(cvt->pixclock/1000); + mode->left_margin = cvt->h_back_porch; + mode->right_margin = cvt->h_front_porch; + mode->hsync_len = cvt->hsync; + mode->upper_margin = cvt->v_back_porch; + mode->lower_margin = cvt->v_front_porch; + mode->vsync_len = cvt->vsync; + + mode->sync &= ~(FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT); + + if (cvt->flags & FB_CVT_FLAG_REDUCED_BLANK) + mode->sync |= FB_SYNC_HOR_HIGH_ACT; + else + mode->sync |= FB_SYNC_VERT_HIGH_ACT; +} + +/* + * fb_find_mode_cvt - calculate mode using VESA(TM) CVT + * @mode: pointer to fb_videomode; xres, yres, refresh and vmode must be + * pre-filled with the desired values + * @margins: add margin to calculation (1.8% of xres and yres) + * @rb: compute with reduced blanking (for flatpanels) + * + * RETURNS: + * 0 for success + * @mode is filled with computed values. If interlaced, the refresh field + * will be filled with the field rate (2x the frame rate) + * + * DESCRIPTION: + * Computes video timings using VESA(TM) Coordinated Video Timings + */ +int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb) +{ + struct fb_cvt_data cvt; + + memset(&cvt, 0, sizeof(cvt)); + + if (margins) + cvt.flags |= FB_CVT_FLAG_MARGINS; + + if (rb) + cvt.flags |= FB_CVT_FLAG_REDUCED_BLANK; + + if (mode->vmode & FB_VMODE_INTERLACED) + cvt.flags |= FB_CVT_FLAG_INTERLACED; + + cvt.xres = mode->xres; + cvt.yres = mode->yres; + cvt.refresh = mode->refresh; + cvt.f_refresh = cvt.refresh; + cvt.interlace = 1; + + if (!cvt.xres || !cvt.yres || !cvt.refresh) { + printk(KERN_INFO "fbcvt: Invalid input parameters\n"); + return 1; + } + + if (!(cvt.refresh == 50 || cvt.refresh == 60 || cvt.refresh == 70 || + cvt.refresh == 85)) { + printk(KERN_INFO "fbcvt: Refresh rate not CVT " + "standard\n"); + cvt.status = 1; + } + + cvt.xres &= ~(FB_CVT_CELLSIZE - 1); + + if (cvt.flags & FB_CVT_FLAG_INTERLACED) { + cvt.interlace = 2; + cvt.f_refresh *= 2; + } + + if (cvt.flags & FB_CVT_FLAG_REDUCED_BLANK) { + if (cvt.refresh != 60) { + printk(KERN_INFO "fbcvt: 60Hz refresh rate " + "advised for reduced blanking\n"); + cvt.status = 1; + } + } + + if (cvt.flags & FB_CVT_FLAG_MARGINS) { + cvt.h_margin = (cvt.xres * 18)/1000; + cvt.h_margin &= ~(FB_CVT_CELLSIZE - 1); + cvt.v_margin = ((cvt.yres/cvt.interlace)* 18)/1000; + } + + cvt.aspect_ratio = fb_cvt_aspect_ratio(&cvt); + cvt.active_pixels = cvt.xres + 2 * cvt.h_margin; + cvt.hperiod = fb_cvt_hperiod(&cvt); + cvt.vsync = fb_cvt_vbi_tab[cvt.aspect_ratio]; + cvt.vtotal = fb_cvt_vtotal(&cvt); + cvt.hblank = fb_cvt_hblank(&cvt); + cvt.htotal = cvt.active_pixels + cvt.hblank; + cvt.hsync = fb_cvt_hsync(&cvt); + cvt.pixclock = fb_cvt_pixclock(&cvt); + cvt.hfreq = cvt.pixclock/cvt.htotal; + cvt.h_back_porch = cvt.hblank/2 + cvt.h_margin; + cvt.h_front_porch = cvt.hblank - cvt.hsync - cvt.h_back_porch + + 2 * cvt.h_margin; + cvt.v_back_porch = 3 + cvt.v_margin; + cvt.v_front_porch = cvt.vtotal - cvt.yres/cvt.interlace - + cvt.v_back_porch - cvt.vsync; + fb_cvt_print_name(&cvt); + fb_cvt_convert_to_mode(&cvt, mode); + + return 0; +} diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c new file mode 100644 index 0000000..b6d5008 --- /dev/null +++ b/drivers/video/fbdev/core/fbmem.c @@ -0,0 +1,2002 @@ +/* + * linux/drivers/video/fbmem.c + * + * Copyright (C) 1994 Martin Schaller + * + * 2001 - Documented with DocBook + * - Brad Douglas + * + * 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 + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + + + /* + * Frame buffer device initialization and setup routines + */ + +#define FBPIXMAPSIZE (1024 * 8) + +static DEFINE_MUTEX(registration_lock); + +struct fb_info *registered_fb[FB_MAX] __read_mostly; +EXPORT_SYMBOL(registered_fb); + +int num_registered_fb __read_mostly; +EXPORT_SYMBOL(num_registered_fb); + +static struct fb_info *get_fb_info(unsigned int idx) +{ + struct fb_info *fb_info; + + if (idx >= FB_MAX) + return ERR_PTR(-ENODEV); + + mutex_lock(®istration_lock); + fb_info = registered_fb[idx]; + if (fb_info) + atomic_inc(&fb_info->count); + mutex_unlock(®istration_lock); + + return fb_info; +} + +static void put_fb_info(struct fb_info *fb_info) +{ + if (!atomic_dec_and_test(&fb_info->count)) + return; + if (fb_info->fbops->fb_destroy) + fb_info->fbops->fb_destroy(fb_info); +} + +int lock_fb_info(struct fb_info *info) +{ + mutex_lock(&info->lock); + if (!info->fbops) { + mutex_unlock(&info->lock); + return 0; + } + return 1; +} +EXPORT_SYMBOL(lock_fb_info); + +/* + * Helpers + */ + +int fb_get_color_depth(struct fb_var_screeninfo *var, + struct fb_fix_screeninfo *fix) +{ + int depth = 0; + + if (fix->visual == FB_VISUAL_MONO01 || + fix->visual == FB_VISUAL_MONO10) + depth = 1; + else { + if (var->green.length == var->blue.length && + var->green.length == var->red.length && + var->green.offset == var->blue.offset && + var->green.offset == var->red.offset) + depth = var->green.length; + else + depth = var->green.length + var->red.length + + var->blue.length; + } + + return depth; +} +EXPORT_SYMBOL(fb_get_color_depth); + +/* + * Data padding functions. + */ +void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height) +{ + __fb_pad_aligned_buffer(dst, d_pitch, src, s_pitch, height); +} +EXPORT_SYMBOL(fb_pad_aligned_buffer); + +void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx, u32 height, + u32 shift_high, u32 shift_low, u32 mod) +{ + u8 mask = (u8) (0xfff << shift_high), tmp; + int i, j; + + for (i = height; i--; ) { + for (j = 0; j < idx; j++) { + tmp = dst[j]; + tmp &= mask; + tmp |= *src >> shift_low; + dst[j] = tmp; + tmp = *src << shift_high; + dst[j+1] = tmp; + src++; + } + tmp = dst[idx]; + tmp &= mask; + tmp |= *src >> shift_low; + dst[idx] = tmp; + if (shift_high < mod) { + tmp = *src << shift_high; + dst[idx+1] = tmp; + } + src++; + dst += d_pitch; + } +} +EXPORT_SYMBOL(fb_pad_unaligned_buffer); + +/* + * we need to lock this section since fb_cursor + * may use fb_imageblit() + */ +char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size) +{ + u32 align = buf->buf_align - 1, offset; + char *addr = buf->addr; + + /* If IO mapped, we need to sync before access, no sharing of + * the pixmap is done + */ + if (buf->flags & FB_PIXMAP_IO) { + if (info->fbops->fb_sync && (buf->flags & FB_PIXMAP_SYNC)) + info->fbops->fb_sync(info); + return addr; + } + + /* See if we fit in the remaining pixmap space */ + offset = buf->offset + align; + offset &= ~align; + if (offset + size > buf->size) { + /* We do not fit. In order to be able to re-use the buffer, + * we must ensure no asynchronous DMA'ing or whatever operation + * is in progress, we sync for that. + */ + if (info->fbops->fb_sync && (buf->flags & FB_PIXMAP_SYNC)) + info->fbops->fb_sync(info); + offset = 0; + } + buf->offset = offset + size; + addr += offset; + + return addr; +} +EXPORT_SYMBOL(fb_get_buffer_offset); + +#ifdef CONFIG_LOGO + +static inline unsigned safe_shift(unsigned d, int n) +{ + return n < 0 ? d >> -n : d << n; +} + +static void fb_set_logocmap(struct fb_info *info, + const struct linux_logo *logo) +{ + struct fb_cmap palette_cmap; + u16 palette_green[16]; + u16 palette_blue[16]; + u16 palette_red[16]; + int i, j, n; + const unsigned char *clut = logo->clut; + + palette_cmap.start = 0; + palette_cmap.len = 16; + palette_cmap.red = palette_red; + palette_cmap.green = palette_green; + palette_cmap.blue = palette_blue; + palette_cmap.transp = NULL; + + for (i = 0; i < logo->clutsize; i += n) { + n = logo->clutsize - i; + /* palette_cmap provides space for only 16 colors at once */ + if (n > 16) + n = 16; + palette_cmap.start = 32 + i; + palette_cmap.len = n; + for (j = 0; j < n; ++j) { + palette_cmap.red[j] = clut[0] << 8 | clut[0]; + palette_cmap.green[j] = clut[1] << 8 | clut[1]; + palette_cmap.blue[j] = clut[2] << 8 | clut[2]; + clut += 3; + } + fb_set_cmap(&palette_cmap, info); + } +} + +static void fb_set_logo_truepalette(struct fb_info *info, + const struct linux_logo *logo, + u32 *palette) +{ + static const unsigned char mask[] = { 0,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff }; + unsigned char redmask, greenmask, bluemask; + int redshift, greenshift, blueshift; + int i; + const unsigned char *clut = logo->clut; + + /* + * We have to create a temporary palette since console palette is only + * 16 colors long. + */ + /* Bug: Doesn't obey msb_right ... (who needs that?) */ + redmask = mask[info->var.red.length < 8 ? info->var.red.length : 8]; + greenmask = mask[info->var.green.length < 8 ? info->var.green.length : 8]; + bluemask = mask[info->var.blue.length < 8 ? info->var.blue.length : 8]; + redshift = info->var.red.offset - (8 - info->var.red.length); + greenshift = info->var.green.offset - (8 - info->var.green.length); + blueshift = info->var.blue.offset - (8 - info->var.blue.length); + + for ( i = 0; i < logo->clutsize; i++) { + palette[i+32] = (safe_shift((clut[0] & redmask), redshift) | + safe_shift((clut[1] & greenmask), greenshift) | + safe_shift((clut[2] & bluemask), blueshift)); + clut += 3; + } +} + +static void fb_set_logo_directpalette(struct fb_info *info, + const struct linux_logo *logo, + u32 *palette) +{ + int redshift, greenshift, blueshift; + int i; + + redshift = info->var.red.offset; + greenshift = info->var.green.offset; + blueshift = info->var.blue.offset; + + for (i = 32; i < 32 + logo->clutsize; i++) + palette[i] = i << redshift | i << greenshift | i << blueshift; +} + +static void fb_set_logo(struct fb_info *info, + const struct linux_logo *logo, u8 *dst, + int depth) +{ + int i, j, k; + const u8 *src = logo->data; + u8 xor = (info->fix.visual == FB_VISUAL_MONO01) ? 0xff : 0; + u8 fg = 1, d; + + switch (fb_get_color_depth(&info->var, &info->fix)) { + case 1: + fg = 1; + break; + case 2: + fg = 3; + break; + default: + fg = 7; + break; + } + + if (info->fix.visual == FB_VISUAL_MONO01 || + info->fix.visual == FB_VISUAL_MONO10) + fg = ~((u8) (0xfff << info->var.green.length)); + + switch (depth) { + case 4: + for (i = 0; i < logo->height; i++) + for (j = 0; j < logo->width; src++) { + *dst++ = *src >> 4; + j++; + if (j < logo->width) { + *dst++ = *src & 0x0f; + j++; + } + } + break; + case 1: + for (i = 0; i < logo->height; i++) { + for (j = 0; j < logo->width; src++) { + d = *src ^ xor; + for (k = 7; k >= 0; k--) { + *dst++ = ((d >> k) & 1) ? fg : 0; + j++; + } + } + } + break; + } +} + +/* + * Three (3) kinds of logo maps exist. linux_logo_clut224 (>16 colors), + * linux_logo_vga16 (16 colors) and linux_logo_mono (2 colors). Depending on + * the visual format and color depth of the framebuffer, the DAC, the + * pseudo_palette, and the logo data will be adjusted accordingly. + * + * Case 1 - linux_logo_clut224: + * Color exceeds the number of console colors (16), thus we set the hardware DAC + * using fb_set_cmap() appropriately. The "needs_cmapreset" flag will be set. + * + * For visuals that require color info from the pseudo_palette, we also construct + * one for temporary use. The "needs_directpalette" or "needs_truepalette" flags + * will be set. + * + * Case 2 - linux_logo_vga16: + * The number of colors just matches the console colors, thus there is no need + * to set the DAC or the pseudo_palette. However, the bitmap is packed, ie, + * each byte contains color information for two pixels (upper and lower nibble). + * To be consistent with fb_imageblit() usage, we therefore separate the two + * nibbles into separate bytes. The "depth" flag will be set to 4. + * + * Case 3 - linux_logo_mono: + * This is similar with Case 2. Each byte contains information for 8 pixels. + * We isolate each bit and expand each into a byte. The "depth" flag will + * be set to 1. + */ +static struct logo_data { + int depth; + int needs_directpalette; + int needs_truepalette; + int needs_cmapreset; + const struct linux_logo *logo; +} fb_logo __read_mostly; + +static void fb_rotate_logo_ud(const u8 *in, u8 *out, u32 width, u32 height) +{ + u32 size = width * height, i; + + out += size - 1; + + for (i = size; i--; ) + *out-- = *in++; +} + +static void fb_rotate_logo_cw(const u8 *in, u8 *out, u32 width, u32 height) +{ + int i, j, h = height - 1; + + for (i = 0; i < height; i++) + for (j = 0; j < width; j++) + out[height * j + h - i] = *in++; +} + +static void fb_rotate_logo_ccw(const u8 *in, u8 *out, u32 width, u32 height) +{ + int i, j, w = width - 1; + + for (i = 0; i < height; i++) + for (j = 0; j < width; j++) + out[height * (w - j) + i] = *in++; +} + +static void fb_rotate_logo(struct fb_info *info, u8 *dst, + struct fb_image *image, int rotate) +{ + u32 tmp; + + if (rotate == FB_ROTATE_UD) { + fb_rotate_logo_ud(image->data, dst, image->width, + image->height); + image->dx = info->var.xres - image->width - image->dx; + image->dy = info->var.yres - image->height - image->dy; + } else if (rotate == FB_ROTATE_CW) { + fb_rotate_logo_cw(image->data, dst, image->width, + image->height); + tmp = image->width; + image->width = image->height; + image->height = tmp; + tmp = image->dy; + image->dy = image->dx; + image->dx = info->var.xres - image->width - tmp; + } else if (rotate == FB_ROTATE_CCW) { + fb_rotate_logo_ccw(image->data, dst, image->width, + image->height); + tmp = image->width; + image->width = image->height; + image->height = tmp; + tmp = image->dx; + image->dx = image->dy; + image->dy = info->var.yres - image->height - tmp; + } + + image->data = dst; +} + +static void fb_do_show_logo(struct fb_info *info, struct fb_image *image, + int rotate, unsigned int num) +{ + unsigned int x; + + if (rotate == FB_ROTATE_UR) { + for (x = 0; + x < num && image->dx + image->width <= info->var.xres; + x++) { + info->fbops->fb_imageblit(info, image); + image->dx += image->width + 8; + } + } else if (rotate == FB_ROTATE_UD) { + for (x = 0; x < num && image->dx >= 0; x++) { + info->fbops->fb_imageblit(info, image); + image->dx -= image->width + 8; + } + } else if (rotate == FB_ROTATE_CW) { + for (x = 0; + x < num && image->dy + image->height <= info->var.yres; + x++) { + info->fbops->fb_imageblit(info, image); + image->dy += image->height + 8; + } + } else if (rotate == FB_ROTATE_CCW) { + for (x = 0; x < num && image->dy >= 0; x++) { + info->fbops->fb_imageblit(info, image); + image->dy -= image->height + 8; + } + } +} + +static int fb_show_logo_line(struct fb_info *info, int rotate, + const struct linux_logo *logo, int y, + unsigned int n) +{ + u32 *palette = NULL, *saved_pseudo_palette = NULL; + unsigned char *logo_new = NULL, *logo_rotate = NULL; + struct fb_image image; + + /* Return if the frame buffer is not mapped or suspended */ + if (logo == NULL || info->state != FBINFO_STATE_RUNNING || + info->flags & FBINFO_MODULE) + return 0; + + image.depth = 8; + image.data = logo->data; + + if (fb_logo.needs_cmapreset) + fb_set_logocmap(info, logo); + + if (fb_logo.needs_truepalette || + fb_logo.needs_directpalette) { + palette = kmalloc(256 * 4, GFP_KERNEL); + if (palette == NULL) + return 0; + + if (fb_logo.needs_truepalette) + fb_set_logo_truepalette(info, logo, palette); + else + fb_set_logo_directpalette(info, logo, palette); + + saved_pseudo_palette = info->pseudo_palette; + info->pseudo_palette = palette; + } + + if (fb_logo.depth <= 4) { + logo_new = kmalloc(logo->width * logo->height, GFP_KERNEL); + if (logo_new == NULL) { + kfree(palette); + if (saved_pseudo_palette) + info->pseudo_palette = saved_pseudo_palette; + return 0; + } + image.data = logo_new; + fb_set_logo(info, logo, logo_new, fb_logo.depth); + } + + image.dx = 0; + image.dy = y; + image.width = logo->width; + image.height = logo->height; + + if (rotate) { + logo_rotate = kmalloc(logo->width * + logo->height, GFP_KERNEL); + if (logo_rotate) + fb_rotate_logo(info, logo_rotate, &image, rotate); + } + + fb_do_show_logo(info, &image, rotate, n); + + kfree(palette); + if (saved_pseudo_palette != NULL) + info->pseudo_palette = saved_pseudo_palette; + kfree(logo_new); + kfree(logo_rotate); + return logo->height; +} + + +#ifdef CONFIG_FB_LOGO_EXTRA + +#define FB_LOGO_EX_NUM_MAX 10 +static struct logo_data_extra { + const struct linux_logo *logo; + unsigned int n; +} fb_logo_ex[FB_LOGO_EX_NUM_MAX]; +static unsigned int fb_logo_ex_num; + +void fb_append_extra_logo(const struct linux_logo *logo, unsigned int n) +{ + if (!n || fb_logo_ex_num == FB_LOGO_EX_NUM_MAX) + return; + + fb_logo_ex[fb_logo_ex_num].logo = logo; + fb_logo_ex[fb_logo_ex_num].n = n; + fb_logo_ex_num++; +} + +static int fb_prepare_extra_logos(struct fb_info *info, unsigned int height, + unsigned int yres) +{ + unsigned int i; + + /* FIXME: logo_ex supports only truecolor fb. */ + if (info->fix.visual != FB_VISUAL_TRUECOLOR) + fb_logo_ex_num = 0; + + for (i = 0; i < fb_logo_ex_num; i++) { + if (fb_logo_ex[i].logo->type != fb_logo.logo->type) { + fb_logo_ex[i].logo = NULL; + continue; + } + height += fb_logo_ex[i].logo->height; + if (height > yres) { + height -= fb_logo_ex[i].logo->height; + fb_logo_ex_num = i; + break; + } + } + return height; +} + +static int fb_show_extra_logos(struct fb_info *info, int y, int rotate) +{ + unsigned int i; + + for (i = 0; i < fb_logo_ex_num; i++) + y += fb_show_logo_line(info, rotate, + fb_logo_ex[i].logo, y, fb_logo_ex[i].n); + + return y; +} + +#else /* !CONFIG_FB_LOGO_EXTRA */ + +static inline int fb_prepare_extra_logos(struct fb_info *info, + unsigned int height, + unsigned int yres) +{ + return height; +} + +static inline int fb_show_extra_logos(struct fb_info *info, int y, int rotate) +{ + return y; +} + +#endif /* CONFIG_FB_LOGO_EXTRA */ + + +int fb_prepare_logo(struct fb_info *info, int rotate) +{ + int depth = fb_get_color_depth(&info->var, &info->fix); + unsigned int yres; + + memset(&fb_logo, 0, sizeof(struct logo_data)); + + if (info->flags & FBINFO_MISC_TILEBLITTING || + info->flags & FBINFO_MODULE) + return 0; + + if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) { + depth = info->var.blue.length; + if (info->var.red.length < depth) + depth = info->var.red.length; + if (info->var.green.length < depth) + depth = info->var.green.length; + } + + if (info->fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR && depth > 4) { + /* assume console colormap */ + depth = 4; + } + + /* Return if no suitable logo was found */ + fb_logo.logo = fb_find_logo(depth); + + if (!fb_logo.logo) { + return 0; + } + + if (rotate == FB_ROTATE_UR || rotate == FB_ROTATE_UD) + yres = info->var.yres; + else + yres = info->var.xres; + + if (fb_logo.logo->height > yres) { + fb_logo.logo = NULL; + return 0; + } + + /* What depth we asked for might be different from what we get */ + if (fb_logo.logo->type == LINUX_LOGO_CLUT224) + fb_logo.depth = 8; + else if (fb_logo.logo->type == LINUX_LOGO_VGA16) + fb_logo.depth = 4; + else + fb_logo.depth = 1; + + + if (fb_logo.depth > 4 && depth > 4) { + switch (info->fix.visual) { + case FB_VISUAL_TRUECOLOR: + fb_logo.needs_truepalette = 1; + break; + case FB_VISUAL_DIRECTCOLOR: + fb_logo.needs_directpalette = 1; + fb_logo.needs_cmapreset = 1; + break; + case FB_VISUAL_PSEUDOCOLOR: + fb_logo.needs_cmapreset = 1; + break; + } + } + + return fb_prepare_extra_logos(info, fb_logo.logo->height, yres); +} + +int fb_show_logo(struct fb_info *info, int rotate) +{ + int y; + + y = fb_show_logo_line(info, rotate, fb_logo.logo, 0, + num_online_cpus()); + y = fb_show_extra_logos(info, y, rotate); + + return y; +} +#else +int fb_prepare_logo(struct fb_info *info, int rotate) { return 0; } +int fb_show_logo(struct fb_info *info, int rotate) { return 0; } +#endif /* CONFIG_LOGO */ +EXPORT_SYMBOL(fb_show_logo); + +static void *fb_seq_start(struct seq_file *m, loff_t *pos) +{ + mutex_lock(®istration_lock); + return (*pos < FB_MAX) ? pos : NULL; +} + +static void *fb_seq_next(struct seq_file *m, void *v, loff_t *pos) +{ + (*pos)++; + return (*pos < FB_MAX) ? pos : NULL; +} + +static void fb_seq_stop(struct seq_file *m, void *v) +{ + mutex_unlock(®istration_lock); +} + +static int fb_seq_show(struct seq_file *m, void *v) +{ + int i = *(loff_t *)v; + struct fb_info *fi = registered_fb[i]; + + if (fi) + seq_printf(m, "%d %s\n", fi->node, fi->fix.id); + return 0; +} + +static const struct seq_operations proc_fb_seq_ops = { + .start = fb_seq_start, + .next = fb_seq_next, + .stop = fb_seq_stop, + .show = fb_seq_show, +}; + +static int proc_fb_open(struct inode *inode, struct file *file) +{ + return seq_open(file, &proc_fb_seq_ops); +} + +static const struct file_operations fb_proc_fops = { + .owner = THIS_MODULE, + .open = proc_fb_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + +/* + * We hold a reference to the fb_info in file->private_data, + * but if the current registered fb has changed, we don't + * actually want to use it. + * + * So look up the fb_info using the inode minor number, + * and just verify it against the reference we have. + */ +static struct fb_info *file_fb_info(struct file *file) +{ + struct inode *inode = file_inode(file); + int fbidx = iminor(inode); + struct fb_info *info = registered_fb[fbidx]; + + if (info != file->private_data) + info = NULL; + return info; +} + +static ssize_t +fb_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) +{ + unsigned long p = *ppos; + struct fb_info *info = file_fb_info(file); + u8 *buffer, *dst; + u8 __iomem *src; + int c, cnt = 0, err = 0; + unsigned long total_size; + + if (!info || ! info->screen_base) + return -ENODEV; + + if (info->state != FBINFO_STATE_RUNNING) + return -EPERM; + + if (info->fbops->fb_read) + return info->fbops->fb_read(info, buf, count, ppos); + + total_size = info->screen_size; + + if (total_size == 0) + total_size = info->fix.smem_len; + + if (p >= total_size) + return 0; + + if (count >= total_size) + count = total_size; + + if (count + p > total_size) + count = total_size - p; + + buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, + GFP_KERNEL); + if (!buffer) + return -ENOMEM; + + src = (u8 __iomem *) (info->screen_base + p); + + if (info->fbops->fb_sync) + info->fbops->fb_sync(info); + + while (count) { + c = (count > PAGE_SIZE) ? PAGE_SIZE : count; + dst = buffer; + fb_memcpy_fromfb(dst, src, c); + dst += c; + src += c; + + if (copy_to_user(buf, buffer, c)) { + err = -EFAULT; + break; + } + *ppos += c; + buf += c; + cnt += c; + count -= c; + } + + kfree(buffer); + + return (err) ? err : cnt; +} + +static ssize_t +fb_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) +{ + unsigned long p = *ppos; + struct fb_info *info = file_fb_info(file); + u8 *buffer, *src; + u8 __iomem *dst; + int c, cnt = 0, err = 0; + unsigned long total_size; + + if (!info || !info->screen_base) + return -ENODEV; + + if (info->state != FBINFO_STATE_RUNNING) + return -EPERM; + + if (info->fbops->fb_write) + return info->fbops->fb_write(info, buf, count, ppos); + + total_size = info->screen_size; + + if (total_size == 0) + total_size = info->fix.smem_len; + + if (p > total_size) + return -EFBIG; + + if (count > total_size) { + err = -EFBIG; + count = total_size; + } + + if (count + p > total_size) { + if (!err) + err = -ENOSPC; + + count = total_size - p; + } + + buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, + GFP_KERNEL); + if (!buffer) + return -ENOMEM; + + dst = (u8 __iomem *) (info->screen_base + p); + + if (info->fbops->fb_sync) + info->fbops->fb_sync(info); + + while (count) { + c = (count > PAGE_SIZE) ? PAGE_SIZE : count; + src = buffer; + + if (copy_from_user(src, buf, c)) { + err = -EFAULT; + break; + } + + fb_memcpy_tofb(dst, src, c); + dst += c; + src += c; + *ppos += c; + buf += c; + cnt += c; + count -= c; + } + + kfree(buffer); + + return (cnt) ? cnt : err; +} + +int +fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var) +{ + struct fb_fix_screeninfo *fix = &info->fix; + unsigned int yres = info->var.yres; + int err = 0; + + if (var->yoffset > 0) { + if (var->vmode & FB_VMODE_YWRAP) { + if (!fix->ywrapstep || (var->yoffset % fix->ywrapstep)) + err = -EINVAL; + else + yres = 0; + } else if (!fix->ypanstep || (var->yoffset % fix->ypanstep)) + err = -EINVAL; + } + + if (var->xoffset > 0 && (!fix->xpanstep || + (var->xoffset % fix->xpanstep))) + err = -EINVAL; + + if (err || !info->fbops->fb_pan_display || + var->yoffset > info->var.yres_virtual - yres || + var->xoffset > info->var.xres_virtual - info->var.xres) + return -EINVAL; + + if ((err = info->fbops->fb_pan_display(var, info))) + return err; + info->var.xoffset = var->xoffset; + info->var.yoffset = var->yoffset; + if (var->vmode & FB_VMODE_YWRAP) + info->var.vmode |= FB_VMODE_YWRAP; + else + info->var.vmode &= ~FB_VMODE_YWRAP; + return 0; +} +EXPORT_SYMBOL(fb_pan_display); + +static int fb_check_caps(struct fb_info *info, struct fb_var_screeninfo *var, + u32 activate) +{ + struct fb_event event; + struct fb_blit_caps caps, fbcaps; + int err = 0; + + memset(&caps, 0, sizeof(caps)); + memset(&fbcaps, 0, sizeof(fbcaps)); + caps.flags = (activate & FB_ACTIVATE_ALL) ? 1 : 0; + event.info = info; + event.data = ∩︀ + fb_notifier_call_chain(FB_EVENT_GET_REQ, &event); + info->fbops->fb_get_caps(info, &fbcaps, var); + + if (((fbcaps.x ^ caps.x) & caps.x) || + ((fbcaps.y ^ caps.y) & caps.y) || + (fbcaps.len < caps.len)) + err = -EINVAL; + + return err; +} + +int +fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var) +{ + int flags = info->flags; + int ret = 0; + + if (var->activate & FB_ACTIVATE_INV_MODE) { + struct fb_videomode mode1, mode2; + + fb_var_to_videomode(&mode1, var); + fb_var_to_videomode(&mode2, &info->var); + /* make sure we don't delete the videomode of current var */ + ret = fb_mode_is_equal(&mode1, &mode2); + + if (!ret) { + struct fb_event event; + + event.info = info; + event.data = &mode1; + ret = fb_notifier_call_chain(FB_EVENT_MODE_DELETE, &event); + } + + if (!ret) + fb_delete_videomode(&mode1, &info->modelist); + + + ret = (ret) ? -EINVAL : 0; + goto done; + } + + if ((var->activate & FB_ACTIVATE_FORCE) || + memcmp(&info->var, var, sizeof(struct fb_var_screeninfo))) { + u32 activate = var->activate; + + /* When using FOURCC mode, make sure the red, green, blue and + * transp fields are set to 0. + */ + if ((info->fix.capabilities & FB_CAP_FOURCC) && + var->grayscale > 1) { + if (var->red.offset || var->green.offset || + var->blue.offset || var->transp.offset || + var->red.length || var->green.length || + var->blue.length || var->transp.length || + var->red.msb_right || var->green.msb_right || + var->blue.msb_right || var->transp.msb_right) + return -EINVAL; + } + + if (!info->fbops->fb_check_var) { + *var = info->var; + goto done; + } + + ret = info->fbops->fb_check_var(var, info); + + if (ret) + goto done; + + if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) { + struct fb_var_screeninfo old_var; + struct fb_videomode mode; + + if (info->fbops->fb_get_caps) { + ret = fb_check_caps(info, var, activate); + + if (ret) + goto done; + } + + old_var = info->var; + info->var = *var; + + if (info->fbops->fb_set_par) { + ret = info->fbops->fb_set_par(info); + + if (ret) { + info->var = old_var; + printk(KERN_WARNING "detected " + "fb_set_par error, " + "error code: %d\n", ret); + goto done; + } + } + + fb_pan_display(info, &info->var); + fb_set_cmap(&info->cmap, info); + fb_var_to_videomode(&mode, &info->var); + + if (info->modelist.prev && info->modelist.next && + !list_empty(&info->modelist)) + ret = fb_add_videomode(&mode, &info->modelist); + + if (!ret && (flags & FBINFO_MISC_USEREVENT)) { + struct fb_event event; + int evnt = (activate & FB_ACTIVATE_ALL) ? + FB_EVENT_MODE_CHANGE_ALL : + FB_EVENT_MODE_CHANGE; + + info->flags &= ~FBINFO_MISC_USEREVENT; + event.info = info; + event.data = &mode; + fb_notifier_call_chain(evnt, &event); + } + } + } + + done: + return ret; +} +EXPORT_SYMBOL(fb_set_var); + +int +fb_blank(struct fb_info *info, int blank) +{ + struct fb_event event; + int ret = -EINVAL, early_ret; + + if (blank > FB_BLANK_POWERDOWN) + blank = FB_BLANK_POWERDOWN; + + event.info = info; + event.data = ␣ + + early_ret = fb_notifier_call_chain(FB_EARLY_EVENT_BLANK, &event); + + if (info->fbops->fb_blank) + ret = info->fbops->fb_blank(blank, info); + + if (!ret) + fb_notifier_call_chain(FB_EVENT_BLANK, &event); + else { + /* + * if fb_blank is failed then revert effects of + * the early blank event. + */ + if (!early_ret) + fb_notifier_call_chain(FB_R_EARLY_EVENT_BLANK, &event); + } + + return ret; +} +EXPORT_SYMBOL(fb_blank); + +static long do_fb_ioctl(struct fb_info *info, unsigned int cmd, + unsigned long arg) +{ + struct fb_ops *fb; + struct fb_var_screeninfo var; + struct fb_fix_screeninfo fix; + struct fb_con2fbmap con2fb; + struct fb_cmap cmap_from; + struct fb_cmap_user cmap; + struct fb_event event; + void __user *argp = (void __user *)arg; + long ret = 0; + + switch (cmd) { + case FBIOGET_VSCREENINFO: + if (!lock_fb_info(info)) + return -ENODEV; + var = info->var; + unlock_fb_info(info); + + ret = copy_to_user(argp, &var, sizeof(var)) ? -EFAULT : 0; + break; + case FBIOPUT_VSCREENINFO: + if (copy_from_user(&var, argp, sizeof(var))) + return -EFAULT; + console_lock(); + if (!lock_fb_info(info)) { + console_unlock(); + return -ENODEV; + } + info->flags |= FBINFO_MISC_USEREVENT; + ret = fb_set_var(info, &var); + info->flags &= ~FBINFO_MISC_USEREVENT; + unlock_fb_info(info); + console_unlock(); + if (!ret && copy_to_user(argp, &var, sizeof(var))) + ret = -EFAULT; + break; + case FBIOGET_FSCREENINFO: + if (!lock_fb_info(info)) + return -ENODEV; + fix = info->fix; + unlock_fb_info(info); + + ret = copy_to_user(argp, &fix, sizeof(fix)) ? -EFAULT : 0; + break; + case FBIOPUTCMAP: + if (copy_from_user(&cmap, argp, sizeof(cmap))) + return -EFAULT; + ret = fb_set_user_cmap(&cmap, info); + break; + case FBIOGETCMAP: + if (copy_from_user(&cmap, argp, sizeof(cmap))) + return -EFAULT; + if (!lock_fb_info(info)) + return -ENODEV; + cmap_from = info->cmap; + unlock_fb_info(info); + ret = fb_cmap_to_user(&cmap_from, &cmap); + break; + case FBIOPAN_DISPLAY: + if (copy_from_user(&var, argp, sizeof(var))) + return -EFAULT; + console_lock(); + if (!lock_fb_info(info)) { + console_unlock(); + return -ENODEV; + } + ret = fb_pan_display(info, &var); + unlock_fb_info(info); + console_unlock(); + if (ret == 0 && copy_to_user(argp, &var, sizeof(var))) + return -EFAULT; + break; + case FBIO_CURSOR: + ret = -EINVAL; + break; + case FBIOGET_CON2FBMAP: + if (copy_from_user(&con2fb, argp, sizeof(con2fb))) + return -EFAULT; + if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) + return -EINVAL; + con2fb.framebuffer = -1; + event.data = &con2fb; + if (!lock_fb_info(info)) + return -ENODEV; + event.info = info; + fb_notifier_call_chain(FB_EVENT_GET_CONSOLE_MAP, &event); + unlock_fb_info(info); + ret = copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0; + break; + case FBIOPUT_CON2FBMAP: + if (copy_from_user(&con2fb, argp, sizeof(con2fb))) + return -EFAULT; + if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) + return -EINVAL; + if (con2fb.framebuffer < 0 || con2fb.framebuffer >= FB_MAX) + return -EINVAL; + if (!registered_fb[con2fb.framebuffer]) + request_module("fb%d", con2fb.framebuffer); + if (!registered_fb[con2fb.framebuffer]) { + ret = -EINVAL; + break; + } + event.data = &con2fb; + console_lock(); + if (!lock_fb_info(info)) { + console_unlock(); + return -ENODEV; + } + event.info = info; + ret = fb_notifier_call_chain(FB_EVENT_SET_CONSOLE_MAP, &event); + unlock_fb_info(info); + console_unlock(); + break; + case FBIOBLANK: + console_lock(); + if (!lock_fb_info(info)) { + console_unlock(); + return -ENODEV; + } + info->flags |= FBINFO_MISC_USEREVENT; + ret = fb_blank(info, arg); + info->flags &= ~FBINFO_MISC_USEREVENT; + unlock_fb_info(info); + console_unlock(); + break; + default: + if (!lock_fb_info(info)) + return -ENODEV; + fb = info->fbops; + if (fb->fb_ioctl) + ret = fb->fb_ioctl(info, cmd, arg); + else + ret = -ENOTTY; + unlock_fb_info(info); + } + return ret; +} + +static long fb_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + struct fb_info *info = file_fb_info(file); + + if (!info) + return -ENODEV; + return do_fb_ioctl(info, cmd, arg); +} + +#ifdef CONFIG_COMPAT +struct fb_fix_screeninfo32 { + char id[16]; + compat_caddr_t smem_start; + u32 smem_len; + u32 type; + u32 type_aux; + u32 visual; + u16 xpanstep; + u16 ypanstep; + u16 ywrapstep; + u32 line_length; + compat_caddr_t mmio_start; + u32 mmio_len; + u32 accel; + u16 reserved[3]; +}; + +struct fb_cmap32 { + u32 start; + u32 len; + compat_caddr_t red; + compat_caddr_t green; + compat_caddr_t blue; + compat_caddr_t transp; +}; + +static int fb_getput_cmap(struct fb_info *info, unsigned int cmd, + unsigned long arg) +{ + struct fb_cmap_user __user *cmap; + struct fb_cmap32 __user *cmap32; + __u32 data; + int err; + + cmap = compat_alloc_user_space(sizeof(*cmap)); + cmap32 = compat_ptr(arg); + + if (copy_in_user(&cmap->start, &cmap32->start, 2 * sizeof(__u32))) + return -EFAULT; + + if (get_user(data, &cmap32->red) || + put_user(compat_ptr(data), &cmap->red) || + get_user(data, &cmap32->green) || + put_user(compat_ptr(data), &cmap->green) || + get_user(data, &cmap32->blue) || + put_user(compat_ptr(data), &cmap->blue) || + get_user(data, &cmap32->transp) || + put_user(compat_ptr(data), &cmap->transp)) + return -EFAULT; + + err = do_fb_ioctl(info, cmd, (unsigned long) cmap); + + if (!err) { + if (copy_in_user(&cmap32->start, + &cmap->start, + 2 * sizeof(__u32))) + err = -EFAULT; + } + return err; +} + +static int do_fscreeninfo_to_user(struct fb_fix_screeninfo *fix, + struct fb_fix_screeninfo32 __user *fix32) +{ + __u32 data; + int err; + + err = copy_to_user(&fix32->id, &fix->id, sizeof(fix32->id)); + + data = (__u32) (unsigned long) fix->smem_start; + err |= put_user(data, &fix32->smem_start); + + err |= put_user(fix->smem_len, &fix32->smem_len); + err |= put_user(fix->type, &fix32->type); + err |= put_user(fix->type_aux, &fix32->type_aux); + err |= put_user(fix->visual, &fix32->visual); + err |= put_user(fix->xpanstep, &fix32->xpanstep); + err |= put_user(fix->ypanstep, &fix32->ypanstep); + err |= put_user(fix->ywrapstep, &fix32->ywrapstep); + err |= put_user(fix->line_length, &fix32->line_length); + + data = (__u32) (unsigned long) fix->mmio_start; + err |= put_user(data, &fix32->mmio_start); + + err |= put_user(fix->mmio_len, &fix32->mmio_len); + err |= put_user(fix->accel, &fix32->accel); + err |= copy_to_user(fix32->reserved, fix->reserved, + sizeof(fix->reserved)); + + if (err) + return -EFAULT; + return 0; +} + +static int fb_get_fscreeninfo(struct fb_info *info, unsigned int cmd, + unsigned long arg) +{ + mm_segment_t old_fs; + struct fb_fix_screeninfo fix; + struct fb_fix_screeninfo32 __user *fix32; + int err; + + fix32 = compat_ptr(arg); + + old_fs = get_fs(); + set_fs(KERNEL_DS); + err = do_fb_ioctl(info, cmd, (unsigned long) &fix); + set_fs(old_fs); + + if (!err) + err = do_fscreeninfo_to_user(&fix, fix32); + + return err; +} + +static long fb_compat_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) +{ + struct fb_info *info = file_fb_info(file); + struct fb_ops *fb; + long ret = -ENOIOCTLCMD; + + if (!info) + return -ENODEV; + fb = info->fbops; + switch(cmd) { + case FBIOGET_VSCREENINFO: + case FBIOPUT_VSCREENINFO: + case FBIOPAN_DISPLAY: + case FBIOGET_CON2FBMAP: + case FBIOPUT_CON2FBMAP: + arg = (unsigned long) compat_ptr(arg); + case FBIOBLANK: + ret = do_fb_ioctl(info, cmd, arg); + break; + + case FBIOGET_FSCREENINFO: + ret = fb_get_fscreeninfo(info, cmd, arg); + break; + + case FBIOGETCMAP: + case FBIOPUTCMAP: + ret = fb_getput_cmap(info, cmd, arg); + break; + + default: + if (fb->fb_compat_ioctl) + ret = fb->fb_compat_ioctl(info, cmd, arg); + break; + } + return ret; +} +#endif + +static int +fb_mmap(struct file *file, struct vm_area_struct * vma) +{ + struct fb_info *info = file_fb_info(file); + struct fb_ops *fb; + unsigned long mmio_pgoff; + unsigned long start; + u32 len; + + if (!info) + return -ENODEV; + fb = info->fbops; + if (!fb) + return -ENODEV; + mutex_lock(&info->mm_lock); + if (fb->fb_mmap) { + int res; + res = fb->fb_mmap(info, vma); + mutex_unlock(&info->mm_lock); + return res; + } + + /* + * Ugh. This can be either the frame buffer mapping, or + * if pgoff points past it, the mmio mapping. + */ + start = info->fix.smem_start; + len = info->fix.smem_len; + mmio_pgoff = PAGE_ALIGN((start & ~PAGE_MASK) + len) >> PAGE_SHIFT; + if (vma->vm_pgoff >= mmio_pgoff) { + if (info->var.accel_flags) { + mutex_unlock(&info->mm_lock); + return -EINVAL; + } + + vma->vm_pgoff -= mmio_pgoff; + start = info->fix.mmio_start; + len = info->fix.mmio_len; + } + mutex_unlock(&info->mm_lock); + + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + fb_pgprotect(file, vma, start); + + return vm_iomap_memory(vma, start, len); +} + +static int +fb_open(struct inode *inode, struct file *file) +__acquires(&info->lock) +__releases(&info->lock) +{ + int fbidx = iminor(inode); + struct fb_info *info; + int res = 0; + + info = get_fb_info(fbidx); + if (!info) { + request_module("fb%d", fbidx); + info = get_fb_info(fbidx); + if (!info) + return -ENODEV; + } + if (IS_ERR(info)) + return PTR_ERR(info); + + mutex_lock(&info->lock); + if (!try_module_get(info->fbops->owner)) { + res = -ENODEV; + goto out; + } + file->private_data = info; + if (info->fbops->fb_open) { + res = info->fbops->fb_open(info,1); + if (res) + module_put(info->fbops->owner); + } +#ifdef CONFIG_FB_DEFERRED_IO + if (info->fbdefio) + fb_deferred_io_open(info, inode, file); +#endif +out: + mutex_unlock(&info->lock); + if (res) + put_fb_info(info); + return res; +} + +static int +fb_release(struct inode *inode, struct file *file) +__acquires(&info->lock) +__releases(&info->lock) +{ + struct fb_info * const info = file->private_data; + + mutex_lock(&info->lock); + if (info->fbops->fb_release) + info->fbops->fb_release(info,1); + module_put(info->fbops->owner); + mutex_unlock(&info->lock); + put_fb_info(info); + return 0; +} + +static const struct file_operations fb_fops = { + .owner = THIS_MODULE, + .read = fb_read, + .write = fb_write, + .unlocked_ioctl = fb_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = fb_compat_ioctl, +#endif + .mmap = fb_mmap, + .open = fb_open, + .release = fb_release, +#ifdef HAVE_ARCH_FB_UNMAPPED_AREA + .get_unmapped_area = get_fb_unmapped_area, +#endif +#ifdef CONFIG_FB_DEFERRED_IO + .fsync = fb_deferred_io_fsync, +#endif + .llseek = default_llseek, +}; + +struct class *fb_class; +EXPORT_SYMBOL(fb_class); + +static int fb_check_foreignness(struct fb_info *fi) +{ + const bool foreign_endian = fi->flags & FBINFO_FOREIGN_ENDIAN; + + fi->flags &= ~FBINFO_FOREIGN_ENDIAN; + +#ifdef __BIG_ENDIAN + fi->flags |= foreign_endian ? 0 : FBINFO_BE_MATH; +#else + fi->flags |= foreign_endian ? FBINFO_BE_MATH : 0; +#endif /* __BIG_ENDIAN */ + + if (fi->flags & FBINFO_BE_MATH && !fb_be_math(fi)) { + pr_err("%s: enable CONFIG_FB_BIG_ENDIAN to " + "support this framebuffer\n", fi->fix.id); + return -ENOSYS; + } else if (!(fi->flags & FBINFO_BE_MATH) && fb_be_math(fi)) { + pr_err("%s: enable CONFIG_FB_LITTLE_ENDIAN to " + "support this framebuffer\n", fi->fix.id); + return -ENOSYS; + } + + return 0; +} + +static bool apertures_overlap(struct aperture *gen, struct aperture *hw) +{ + /* is the generic aperture base the same as the HW one */ + if (gen->base == hw->base) + return true; + /* is the generic aperture base inside the hw base->hw base+size */ + if (gen->base > hw->base && gen->base < hw->base + hw->size) + return true; + return false; +} + +static bool fb_do_apertures_overlap(struct apertures_struct *gena, + struct apertures_struct *hwa) +{ + int i, j; + if (!hwa || !gena) + return false; + + for (i = 0; i < hwa->count; ++i) { + struct aperture *h = &hwa->ranges[i]; + for (j = 0; j < gena->count; ++j) { + struct aperture *g = &gena->ranges[j]; + printk(KERN_DEBUG "checking generic (%llx %llx) vs hw (%llx %llx)\n", + (unsigned long long)g->base, + (unsigned long long)g->size, + (unsigned long long)h->base, + (unsigned long long)h->size); + if (apertures_overlap(g, h)) + return true; + } + } + + return false; +} + +static int do_unregister_framebuffer(struct fb_info *fb_info); + +#define VGA_FB_PHYS 0xA0000 +static int do_remove_conflicting_framebuffers(struct apertures_struct *a, + const char *name, bool primary) +{ + int i, ret; + + /* check all firmware fbs and kick off if the base addr overlaps */ + for (i = 0 ; i < FB_MAX; i++) { + struct apertures_struct *gen_aper; + if (!registered_fb[i]) + continue; + + if (!(registered_fb[i]->flags & FBINFO_MISC_FIRMWARE)) + continue; + + gen_aper = registered_fb[i]->apertures; + if (fb_do_apertures_overlap(gen_aper, a) || + (primary && gen_aper && gen_aper->count && + gen_aper->ranges[0].base == VGA_FB_PHYS)) { + + printk(KERN_INFO "fb: switching to %s from %s\n", + name, registered_fb[i]->fix.id); + ret = do_unregister_framebuffer(registered_fb[i]); + if (ret) + return ret; + } + } + + return 0; +} + +static int do_register_framebuffer(struct fb_info *fb_info) +{ + int i, ret; + struct fb_event event; + struct fb_videomode mode; + + if (fb_check_foreignness(fb_info)) + return -ENOSYS; + + ret = do_remove_conflicting_framebuffers(fb_info->apertures, + fb_info->fix.id, + fb_is_primary_device(fb_info)); + if (ret) + return ret; + + if (num_registered_fb == FB_MAX) + return -ENXIO; + + num_registered_fb++; + for (i = 0 ; i < FB_MAX; i++) + if (!registered_fb[i]) + break; + fb_info->node = i; + atomic_set(&fb_info->count, 1); + mutex_init(&fb_info->lock); + mutex_init(&fb_info->mm_lock); + + fb_info->dev = device_create(fb_class, fb_info->device, + MKDEV(FB_MAJOR, i), NULL, "fb%d", i); + if (IS_ERR(fb_info->dev)) { + /* Not fatal */ + printk(KERN_WARNING "Unable to create device for framebuffer %d; errno = %ld\n", i, PTR_ERR(fb_info->dev)); + fb_info->dev = NULL; + } else + fb_init_device(fb_info); + + if (fb_info->pixmap.addr == NULL) { + fb_info->pixmap.addr = kmalloc(FBPIXMAPSIZE, GFP_KERNEL); + if (fb_info->pixmap.addr) { + fb_info->pixmap.size = FBPIXMAPSIZE; + fb_info->pixmap.buf_align = 1; + fb_info->pixmap.scan_align = 1; + fb_info->pixmap.access_align = 32; + fb_info->pixmap.flags = FB_PIXMAP_DEFAULT; + } + } + fb_info->pixmap.offset = 0; + + if (!fb_info->pixmap.blit_x) + fb_info->pixmap.blit_x = ~(u32)0; + + if (!fb_info->pixmap.blit_y) + fb_info->pixmap.blit_y = ~(u32)0; + + if (!fb_info->modelist.prev || !fb_info->modelist.next) + INIT_LIST_HEAD(&fb_info->modelist); + + if (fb_info->skip_vt_switch) + pm_vt_switch_required(fb_info->dev, false); + else + pm_vt_switch_required(fb_info->dev, true); + + fb_var_to_videomode(&mode, &fb_info->var); + fb_add_videomode(&mode, &fb_info->modelist); + registered_fb[i] = fb_info; + + event.info = fb_info; + console_lock(); + if (!lock_fb_info(fb_info)) { + console_unlock(); + return -ENODEV; + } + + fb_notifier_call_chain(FB_EVENT_FB_REGISTERED, &event); + unlock_fb_info(fb_info); + console_unlock(); + return 0; +} + +static int do_unregister_framebuffer(struct fb_info *fb_info) +{ + struct fb_event event; + int i, ret = 0; + + i = fb_info->node; + if (i < 0 || i >= FB_MAX || registered_fb[i] != fb_info) + return -EINVAL; + + console_lock(); + if (!lock_fb_info(fb_info)) { + console_unlock(); + return -ENODEV; + } + + event.info = fb_info; + ret = fb_notifier_call_chain(FB_EVENT_FB_UNBIND, &event); + unlock_fb_info(fb_info); + console_unlock(); + + if (ret) + return -EINVAL; + + pm_vt_switch_unregister(fb_info->dev); + + unlink_framebuffer(fb_info); + if (fb_info->pixmap.addr && + (fb_info->pixmap.flags & FB_PIXMAP_DEFAULT)) + kfree(fb_info->pixmap.addr); + fb_destroy_modelist(&fb_info->modelist); + registered_fb[i] = NULL; + num_registered_fb--; + fb_cleanup_device(fb_info); + event.info = fb_info; + console_lock(); + fb_notifier_call_chain(FB_EVENT_FB_UNREGISTERED, &event); + console_unlock(); + + /* this may free fb info */ + put_fb_info(fb_info); + return 0; +} + +int unlink_framebuffer(struct fb_info *fb_info) +{ + int i; + + i = fb_info->node; + if (i < 0 || i >= FB_MAX || registered_fb[i] != fb_info) + return -EINVAL; + + if (fb_info->dev) { + device_destroy(fb_class, MKDEV(FB_MAJOR, i)); + fb_info->dev = NULL; + } + return 0; +} +EXPORT_SYMBOL(unlink_framebuffer); + +int remove_conflicting_framebuffers(struct apertures_struct *a, + const char *name, bool primary) +{ + int ret; + + mutex_lock(®istration_lock); + ret = do_remove_conflicting_framebuffers(a, name, primary); + mutex_unlock(®istration_lock); + + return ret; +} +EXPORT_SYMBOL(remove_conflicting_framebuffers); + +/** + * register_framebuffer - registers a frame buffer device + * @fb_info: frame buffer info structure + * + * Registers a frame buffer device @fb_info. + * + * Returns negative errno on error, or zero for success. + * + */ +int +register_framebuffer(struct fb_info *fb_info) +{ + int ret; + + mutex_lock(®istration_lock); + ret = do_register_framebuffer(fb_info); + mutex_unlock(®istration_lock); + + return ret; +} +EXPORT_SYMBOL(register_framebuffer); + +/** + * unregister_framebuffer - releases a frame buffer device + * @fb_info: frame buffer info structure + * + * Unregisters a frame buffer device @fb_info. + * + * Returns negative errno on error, or zero for success. + * + * This function will also notify the framebuffer console + * to release the driver. + * + * This is meant to be called within a driver's module_exit() + * function. If this is called outside module_exit(), ensure + * that the driver implements fb_open() and fb_release() to + * check that no processes are using the device. + */ +int +unregister_framebuffer(struct fb_info *fb_info) +{ + int ret; + + mutex_lock(®istration_lock); + ret = do_unregister_framebuffer(fb_info); + mutex_unlock(®istration_lock); + + return ret; +} +EXPORT_SYMBOL(unregister_framebuffer); + +/** + * fb_set_suspend - low level driver signals suspend + * @info: framebuffer affected + * @state: 0 = resuming, !=0 = suspending + * + * This is meant to be used by low level drivers to + * signal suspend/resume to the core & clients. + * It must be called with the console semaphore held + */ +void fb_set_suspend(struct fb_info *info, int state) +{ + struct fb_event event; + + event.info = info; + if (state) { + fb_notifier_call_chain(FB_EVENT_SUSPEND, &event); + info->state = FBINFO_STATE_SUSPENDED; + } else { + info->state = FBINFO_STATE_RUNNING; + fb_notifier_call_chain(FB_EVENT_RESUME, &event); + } +} +EXPORT_SYMBOL(fb_set_suspend); + +/** + * fbmem_init - init frame buffer subsystem + * + * Initialize the frame buffer subsystem. + * + * NOTE: This function is _only_ to be called by drivers/char/mem.c. + * + */ + +static int __init +fbmem_init(void) +{ + proc_create("fb", 0, NULL, &fb_proc_fops); + + if (register_chrdev(FB_MAJOR,"fb",&fb_fops)) + printk("unable to get major %d for fb devs\n", FB_MAJOR); + + fb_class = class_create(THIS_MODULE, "graphics"); + if (IS_ERR(fb_class)) { + printk(KERN_WARNING "Unable to create fb class; errno = %ld\n", PTR_ERR(fb_class)); + fb_class = NULL; + } + return 0; +} + +#ifdef MODULE +module_init(fbmem_init); +static void __exit +fbmem_exit(void) +{ + remove_proc_entry("fb", NULL); + class_destroy(fb_class); + unregister_chrdev(FB_MAJOR, "fb"); +} + +module_exit(fbmem_exit); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Framebuffer base"); +#else +subsys_initcall(fbmem_init); +#endif + +int fb_new_modelist(struct fb_info *info) +{ + struct fb_event event; + struct fb_var_screeninfo var = info->var; + struct list_head *pos, *n; + struct fb_modelist *modelist; + struct fb_videomode *m, mode; + int err = 1; + + list_for_each_safe(pos, n, &info->modelist) { + modelist = list_entry(pos, struct fb_modelist, list); + m = &modelist->mode; + fb_videomode_to_var(&var, m); + var.activate = FB_ACTIVATE_TEST; + err = fb_set_var(info, &var); + fb_var_to_videomode(&mode, &var); + if (err || !fb_mode_is_equal(m, &mode)) { + list_del(pos); + kfree(pos); + } + } + + err = 1; + + if (!list_empty(&info->modelist)) { + event.info = info; + err = fb_notifier_call_chain(FB_EVENT_NEW_MODELIST, &event); + } + + return err; +} + +static char *video_options[FB_MAX] __read_mostly; +static int ofonly __read_mostly; + +/** + * fb_get_options - get kernel boot parameters + * @name: framebuffer name as it would appear in + * the boot parameter line + * (video=:) + * @option: the option will be stored here + * + * NOTE: Needed to maintain backwards compatibility + */ +int fb_get_options(const char *name, char **option) +{ + char *opt, *options = NULL; + int retval = 0; + int name_len = strlen(name), i; + + if (name_len && ofonly && strncmp(name, "offb", 4)) + retval = 1; + + if (name_len && !retval) { + for (i = 0; i < FB_MAX; i++) { + if (video_options[i] == NULL) + continue; + if (!video_options[i][0]) + continue; + opt = video_options[i]; + if (!strncmp(name, opt, name_len) && + opt[name_len] == ':') + options = opt + name_len + 1; + } + } + /* No match, pass global option */ + if (!options && option && fb_mode_option) + options = kstrdup(fb_mode_option, GFP_KERNEL); + if (options && !strncmp(options, "off", 3)) + retval = 1; + + if (option) + *option = options; + + return retval; +} +EXPORT_SYMBOL(fb_get_options); + +#ifndef MODULE +/** + * video_setup - process command line options + * @options: string of options + * + * Process command line options for frame buffer subsystem. + * + * NOTE: This function is a __setup and __init function. + * It only stores the options. Drivers have to call + * fb_get_options() as necessary. + * + * Returns zero. + * + */ +static int __init video_setup(char *options) +{ + int i, global = 0; + + if (!options || !*options) + global = 1; + + if (!global && !strncmp(options, "ofonly", 6)) { + ofonly = 1; + global = 1; + } + + if (!global && !strchr(options, ':')) { + fb_mode_option = options; + global = 1; + } + + if (!global) { + for (i = 0; i < FB_MAX; i++) { + if (video_options[i] == NULL) { + video_options[i] = options; + break; + } + + } + } + + return 1; +} +__setup("video=", video_setup); +#endif + +MODULE_LICENSE("GPL"); diff --git a/drivers/video/fbdev/core/fbmon.c b/drivers/video/fbdev/core/fbmon.c new file mode 100644 index 0000000..c204ebe --- /dev/null +++ b/drivers/video/fbdev/core/fbmon.c @@ -0,0 +1,1592 @@ +/* + * linux/drivers/video/fbmon.c + * + * Copyright (C) 2002 James Simmons + * + * Credits: + * + * The EDID Parser is a conglomeration from the following sources: + * + * 1. SciTech SNAP Graphics Architecture + * Copyright (C) 1991-2002 SciTech Software, Inc. All rights reserved. + * + * 2. XFree86 4.3.0, interpret_edid.c + * Copyright 1998 by Egbert Eich + * + * 3. John Fremlin and + * Ani Joshi + * + * Generalized Timing Formula is derived from: + * + * GTF Spreadsheet by Andy Morrish (1/5/97) + * available at http://www.vesa.org + * + * 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 +#include +#include +#include +#include