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author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-02-13 15:31:38 +0200 |
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committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-04-17 08:10:19 +0300 |
commit | f7018c21350204c4cf628462f229d44d03545254 (patch) | |
tree | 408787177164cf51cc06f7aabdb04fcff8d2b6aa /drivers/video/syscopyarea.c | |
parent | c26ef3eb3c11274bad1b64498d0a134f85755250 (diff) | |
download | linux-stable-f7018c21350204c4cf628462f229d44d03545254.tar.gz linux-stable-f7018c21350204c4cf628462f229d44d03545254.tar.bz2 linux-stable-f7018c21350204c4cf628462f229d44d03545254.zip |
video: move fbdev to drivers/video/fbdev
The drivers/video directory is a mess. It contains generic video related
files, directories for backlight, console, linux logo, lots of fbdev
device drivers, fbdev framework files.
Make some order into the chaos by creating drivers/video/fbdev
directory, and move all fbdev related files there.
No functionality is changed, although I guess it is possible that some
subtle Makefile build order related issue could be created by this
patch.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/video/syscopyarea.c')
-rw-r--r-- | drivers/video/syscopyarea.c | 377 |
1 files changed, 0 insertions, 377 deletions
diff --git a/drivers/video/syscopyarea.c b/drivers/video/syscopyarea.c deleted file mode 100644 index 844a32fd38ed..000000000000 --- a/drivers/video/syscopyarea.c +++ /dev/null @@ -1,377 +0,0 @@ -/* - * Generic Bit Block Transfer for frame buffers located in system RAM with - * packed pixels of any depth. - * - * Based almost entirely from cfbcopyarea.c (which is based almost entirely - * on Geert Uytterhoeven's copyarea routine) - * - * Copyright (C) 2007 Antonino Daplas <adaplas@pol.net> - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive for - * more details. - * - */ -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/fb.h> -#include <asm/types.h> -#include <asm/io.h> -#include "fb_draw.h" - - /* - * Generic bitwise copy algorithm - */ - -static void -bitcpy(struct fb_info *p, unsigned long *dst, int dst_idx, - const unsigned long *src, int src_idx, int bits, unsigned n) -{ - unsigned long first, last; - int const shift = dst_idx-src_idx; - int left, right; - - first = FB_SHIFT_HIGH(p, ~0UL, dst_idx); - last = ~(FB_SHIFT_HIGH(p, ~0UL, (dst_idx+n) % bits)); - - if (!shift) { - /* Same alignment for source and dest */ - if (dst_idx+n <= bits) { - /* Single word */ - if (last) - first &= last; - *dst = comp(*src, *dst, first); - } else { - /* Multiple destination words */ - /* Leading bits */ - if (first != ~0UL) { - *dst = comp(*src, *dst, first); - dst++; - src++; - n -= bits - dst_idx; - } - - /* Main chunk */ - n /= bits; - while (n >= 8) { - *dst++ = *src++; - *dst++ = *src++; - *dst++ = *src++; - *dst++ = *src++; - *dst++ = *src++; - *dst++ = *src++; - *dst++ = *src++; - *dst++ = *src++; - n -= 8; - } - while (n--) - *dst++ = *src++; - - /* Trailing bits */ - if (last) - *dst = comp(*src, *dst, last); - } - } else { - unsigned long d0, d1; - int m; - - /* Different alignment for source and dest */ - right = shift & (bits - 1); - left = -shift & (bits - 1); - - if (dst_idx+n <= bits) { - /* Single destination word */ - if (last) - first &= last; - if (shift > 0) { - /* Single source word */ - *dst = comp(*src >> right, *dst, first); - } else if (src_idx+n <= bits) { - /* Single source word */ - *dst = comp(*src << left, *dst, first); - } else { - /* 2 source words */ - d0 = *src++; - d1 = *src; - *dst = comp(d0 << left | d1 >> right, *dst, - first); - } - } 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 = *src++; - /* Leading bits */ - if (shift > 0) { - /* Single source word */ - *dst = comp(d0 >> right, *dst, first); - dst++; - n -= bits - dst_idx; - } else { - /* 2 source words */ - d1 = *src++; - *dst = comp(d0 << left | *dst >> right, *dst, first); - d0 = d1; - dst++; - n -= bits - dst_idx; - } - - /* Main chunk */ - m = n % bits; - n /= bits; - while (n >= 4) { - d1 = *src++; - *dst++ = d0 << left | d1 >> right; - d0 = d1; - d1 = *src++; - *dst++ = d0 << left | d1 >> right; - d0 = d1; - d1 = *src++; - *dst++ = d0 << left | d1 >> right; - d0 = d1; - d1 = *src++; - *dst++ = d0 << left | d1 >> right; - d0 = d1; - n -= 4; - } - while (n--) { - d1 = *src++; - *dst++ = d0 << left | d1 >> right; - d0 = d1; - } - - /* Trailing bits */ - if (last) { - if (m <= right) { - /* Single source word */ - *dst = comp(d0 << left, *dst, last); - } else { - /* 2 source words */ - d1 = *src; - *dst = comp(d0 << left | d1 >> right, - *dst, last); - } - } - } - } -} - - /* - * Generic bitwise copy algorithm, operating backward - */ - -static void -bitcpy_rev(struct fb_info *p, unsigned long *dst, int dst_idx, - const unsigned long *src, int src_idx, int bits, unsigned n) -{ - unsigned long first, last; - int shift; - - dst += (n-1)/bits; - src += (n-1)/bits; - if ((n-1) % bits) { - dst_idx += (n-1) % bits; - dst += dst_idx >> (ffs(bits) - 1); - dst_idx &= bits - 1; - src_idx += (n-1) % bits; - src += src_idx >> (ffs(bits) - 1); - src_idx &= bits - 1; - } - - shift = dst_idx-src_idx; - - first = FB_SHIFT_LOW(p, ~0UL, bits - 1 - dst_idx); - last = ~(FB_SHIFT_LOW(p, ~0UL, bits - 1 - ((dst_idx-n) % bits))); - - if (!shift) { - /* Same alignment for source and dest */ - if ((unsigned long)dst_idx+1 >= n) { - /* Single word */ - if (last) - first &= last; - *dst = comp(*src, *dst, first); - } else { - /* Multiple destination words */ - - /* Leading bits */ - if (first != ~0UL) { - *dst = comp(*src, *dst, first); - dst--; - src--; - n -= dst_idx+1; - } - - /* Main chunk */ - n /= bits; - while (n >= 8) { - *dst-- = *src--; - *dst-- = *src--; - *dst-- = *src--; - *dst-- = *src--; - *dst-- = *src--; - *dst-- = *src--; - *dst-- = *src--; - *dst-- = *src--; - n -= 8; - } - while (n--) - *dst-- = *src--; - /* Trailing bits */ - if (last) - *dst = comp(*src, *dst, last); - } - } else { - /* Different alignment for source and dest */ - - int const left = -shift & (bits-1); - int const right = shift & (bits-1); - - if ((unsigned long)dst_idx+1 >= n) { - /* Single destination word */ - if (last) - first &= last; - if (shift < 0) { - /* Single source word */ - *dst = comp(*src << left, *dst, first); - } else if (1+(unsigned long)src_idx >= n) { - /* Single source word */ - *dst = comp(*src >> right, *dst, first); - } else { - /* 2 source words */ - *dst = comp(*src >> right | *(src-1) << left, - *dst, first); - } - } 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'. */ - unsigned long d0, d1; - int m; - - d0 = *src--; - /* Leading bits */ - if (shift < 0) { - /* Single source word */ - *dst = comp(d0 << left, *dst, first); - } else { - /* 2 source words */ - d1 = *src--; - *dst = comp(d0 >> right | d1 << left, *dst, - first); - d0 = d1; - } - dst--; - n -= dst_idx+1; - - /* Main chunk */ - m = n % bits; - n /= bits; - while (n >= 4) { - d1 = *src--; - *dst-- = d0 >> right | d1 << left; - d0 = d1; - d1 = *src--; - *dst-- = d0 >> right | d1 << left; - d0 = d1; - d1 = *src--; - *dst-- = d0 >> right | d1 << left; - d0 = d1; - d1 = *src--; - *dst-- = d0 >> right | d1 << left; - d0 = d1; - n -= 4; - } - while (n--) { - d1 = *src--; - *dst-- = d0 >> right | d1 << left; - d0 = d1; - } - - /* Trailing bits */ - if (last) { - if (m <= left) { - /* Single source word */ - *dst = comp(d0 >> right, *dst, last); - } else { - /* 2 source words */ - d1 = *src; - *dst = comp(d0 >> right | d1 << left, - *dst, last); - } - } - } - } -} - -void sys_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 *dst = NULL, *src = NULL; - int bits = BITS_PER_LONG, bytes = bits >> 3; - int dst_idx = 0, src_idx = 0, rev_copy = 0; - - 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 */ - dst = src = (unsigned long *)((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; - dst += dst_idx >> (ffs(bits) - 1); - dst_idx &= (bytes - 1); - src += src_idx >> (ffs(bits) - 1); - src_idx &= (bytes - 1); - bitcpy_rev(p, dst, dst_idx, src, src_idx, bits, - width*p->var.bits_per_pixel); - } - } else { - while (height--) { - dst += dst_idx >> (ffs(bits) - 1); - dst_idx &= (bytes - 1); - src += src_idx >> (ffs(bits) - 1); - src_idx &= (bytes - 1); - bitcpy(p, dst, dst_idx, src, src_idx, bits, - width*p->var.bits_per_pixel); - dst_idx += bits_per_line; - src_idx += bits_per_line; - } - } -} - -EXPORT_SYMBOL(sys_copyarea); - -MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>"); -MODULE_DESCRIPTION("Generic copyarea (sys-to-sys)"); -MODULE_LICENSE("GPL"); - |