From c465e05a03209651078b95686158648fd7ed84c5 Mon Sep 17 00:00:00 2001 From: "Antonino A. Daplas" Date: Mon, 7 Nov 2005 01:00:35 -0800 Subject: [PATCH] fbcon/fbdev: Move softcursor out of fbdev to fbcon According to Jon Smirl, filling in the field fb_cursor with soft_cursor for drivers that do not support hardware cursors is redundant. The soft_cursor function is usable by all drivers because it is just a wrapper around fb_imageblit. And because soft_cursor is an fbcon-specific hook, the file is moved to the console directory. Thus, drivers that do not support hardware cursors can leave the fb_cursor field blank. For drivers that do, they can fill up this field with their own version. The end result is a smaller code size. And if the framebuffer console is not loaded, module/kernel size is also reduced because the soft_cursor module will also not be loaded. Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/console/softcursor.c | 72 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 drivers/video/console/softcursor.c (limited to 'drivers/video/console/softcursor.c') diff --git a/drivers/video/console/softcursor.c b/drivers/video/console/softcursor.c new file mode 100644 index 00000000000..8529bf08db2 --- /dev/null +++ b/drivers/video/console/softcursor.c @@ -0,0 +1,72 @@ +/* + * 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); + + fb_pad_aligned_buffer(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