From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/video/softcursor.c | 79 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 drivers/video/softcursor.c (limited to 'drivers/video/softcursor.c') diff --git a/drivers/video/softcursor.c b/drivers/video/softcursor.c new file mode 100644 index 00000000000..13a4511539a --- /dev/null +++ b/drivers/video/softcursor.c @@ -0,0 +1,79 @@ +/* + * linux/drivers/video/softcursor.c -- Generic software cursor for frame buffer devices + * + * Created 14 Nov 2002 by 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. + */ + +#include +#include +#include +#include +#include + +#include +#include + +int soft_cursor(struct fb_info *info, struct fb_cursor *cursor) +{ + unsigned int scan_align = info->pixmap.scan_align - 1; + unsigned int buf_align = info->pixmap.buf_align - 1; + unsigned int i, size, dsize, s_pitch, d_pitch; + struct fb_image *image; + u8 *dst, *src; + + if (info->state != FBINFO_STATE_RUNNING) + return 0; + + s_pitch = (cursor->image.width + 7) >> 3; + dsize = s_pitch * cursor->image.height; + + src = kmalloc(dsize + sizeof(struct fb_image), GFP_ATOMIC); + if (!src) + return -ENOMEM; + + image = (struct fb_image *) (src + dsize); + *image = cursor->image; + d_pitch = (s_pitch + scan_align) & ~scan_align; + + size = d_pitch * image->height + buf_align; + size &= ~buf_align; + dst = fb_get_buffer_offset(info, &info->pixmap, size); + + if (cursor->enable) { + switch (cursor->rop) { + case ROP_XOR: + for (i = 0; i < dsize; i++) + src[i] = image->data[i] ^ cursor->mask[i]; + break; + case ROP_COPY: + default: + for (i = 0; i < dsize; i++) + src[i] = image->data[i] & cursor->mask[i]; + break; + } + } else + memcpy(src, image->data, dsize); + + if (info->pixmap.outbuf) + fb_iomove_buf_aligned(info, &info->pixmap, dst, d_pitch, src, + s_pitch, image->height); + else + fb_sysmove_buf_aligned(info, &info->pixmap, dst, d_pitch, src, + s_pitch, image->height); + + image->data = dst; + info->fbops->fb_imageblit(info, image); + kfree(src); + + return 0; +} + +EXPORT_SYMBOL(soft_cursor); + +MODULE_AUTHOR("James Simmons "); +MODULE_DESCRIPTION("Generic software cursor"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3