/* * Fast C2P (Chunky-to-Planar) Conversion * * Copyright (C) 2003-2008 Geert Uytterhoeven * * 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 "c2p.h" #include "c2p_core.h" /* * Perform a full C2P step on 16 8-bit pixels, stored in 4 32-bit words * containing * - 16 8-bit chunky pixels on input * - permutated planar data (2 planes per 32-bit word) on output */ static void c2p_16x8(u32 d[4]) { transp4(d, 8, 2); transp4(d, 1, 2); transp4x(d, 16, 2); transp4x(d, 2, 2); transp4(d, 4, 1); } /* * Array containing the permutation indices of the planar data after c2p */ static const int perm_c2p_16x8[4] = { 1, 3, 0, 2 }; /* * Store a full block of iplan2 data after c2p conversion */ static inline void store_iplan2(void *dst, u32 bpp, u32 d[4]) { int i; for (i = 0; i < bpp/2; i++, dst += 4) put_unaligned_be32(d[perm_c2p_16x8[i]], dst); } /* * Store a partial block of iplan2 data after c2p conversion */ static inline void store_iplan2_masked(void *dst, u32 bpp, u32 d[4], u32 mask) { int i; for (i = 0; i < bpp/2; i++, dst += 4) put_unaligned_be32(comp(d[perm_c2p_16x8[i]], get_unaligned_be32(dst), mask), dst); } /* * c2p_iplan2 - Copy 8-bit chunky image data to an interleaved planar * frame buffer with 2 bytes of interleave * @dst: Starting address of the planar frame buffer * @dx: Horizontal destination offset (in pixels) * @dy: Vertical destination offset (in pixels) * @width: Image width (in pixels) * @height: Image height (in pixels) * @dst_nextline: Frame buffer offset to the next line (in bytes) * @src_nextline: Image offset to the next line (in bytes) * @bpp: Bits per pixel of the planar frame buffer (2, 4, or 8) */ void c2p_iplan2(void *dst, const void *src, u32 dx, u32 dy, u32 width, u32 height, u32 dst_nextline, u32 src_nextline, u32 bpp) { union { u8 pixels[16]; u32 words[4]; } d; u32 dst_idx, first, last, w; const u8 *c; void *p; dst += dy*dst_nextline+(dx & ~15)*bpp; dst_idx = dx % 16; first = 0xffffU >> dst_idx; first |= first << 16; last = 0xffffU ^ (0xffffU >> ((dst_idx+width) % 16)); last |= last << 16; while (height--) { c = src; p = dst; w = width; if (dst_idx+width <= 16) { /* Single destination word */ first &= last; memset(d.pixels, 0, sizeof(d)); memcpy(d.pixels+dst_idx, c, width); c += width; c2p_16x8(d.words); store_iplan2_masked(p, bpp, d.words, first); p += bpp*2; } else { /* Multiple destination words */ w = width; /* Leading bits */ if (dst_idx) { w = 16 - dst_idx; memset(d.pixels, 0, dst_idx); memcpy(d.pixels+dst_idx, c, w); c += w; c2p_16x8(d.words); store_iplan2_masked(p, bpp, d.words, first); p += bpp*2; w = width-w; } /* Main chunk */ while (w >= 16) { memcpy(d.pixels, c, 16); c += 16; c2p_16x8(d.words); store_iplan2(p, bpp, d.words); p += bpp*2; w -= 16; } /* Trailing bits */ w %= 16; if (w > 0) { memcpy(d.pixels, c, w); memset(d.pixels+w, 0, 16-w); c2p_16x8(d.words); store_iplan2_masked(p, bpp, d.words, last); } } src += src_nextline; dst += dst_nextline; } } EXPORT_SYMBOL_GPL(c2p_iplan2); MODULE_LICENSE("GPL"); ion value='4'>4space:mode:
Diffstat (limited to 'sound/soc/txx9/Kconfig')
committerDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-30 10:17:32 +0100
commite6e7b48b295afa5a5ab440de0a94d9ad8b3ce2d0 (patch)
tree77cadb6d8aad1b52c34e4afa8c9deef603bbe2ed /sound/isa/gus/gus_io.c
parent4e5b54f127426c82dc2816340c26d951a5bb3429 (diff)
drm: Don't race connector registration
I was under the misconception that the sysfs dev stuff can be fully set up, and then registered all in one step with device_add. That's true for properties and property groups, but not for parents and child devices. Those must be fully registered before you can register a child. Add a bit of tracking to make sure that asynchronous mst connector hotplugging gets this right. For consistency we rely upon the implicit barriers of the connector->mutex, which is taken anyway, to ensure that at least either the connector or device registration call will work out. Mildly tested since I can't reliably reproduce this on my mst box here. Reported-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1484237756-2720-1-git-send-email-daniel.vetter@ffwll.ch
Diffstat (limited to 'sound/isa/gus/gus_io.c')