Release 4.14 drivers/video/fbdev/core/softcursor.c
/*
* linux/drivers/video/console/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 <linux/module.h>
#include <linux/string.h>
#include <linux/fb.h>
#include <linux/slab.h>
#include <asm/io.h>
#include "fbcon.h"
int soft_cursor(struct fb_info *info, struct fb_cursor *cursor)
{
struct fbcon_ops *ops = info->fbcon_par;
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 *src, *dst;
if (info->state != FBINFO_STATE_RUNNING)
return 0;
s_pitch = (cursor->image.width + 7) >> 3;
dsize = s_pitch * cursor->image.height;
if (dsize + sizeof(struct fb_image) != ops->cursor_size) {
kfree(ops->cursor_src);
ops->cursor_size = dsize + sizeof(struct fb_image);
ops->cursor_src = kmalloc(ops->cursor_size, GFP_ATOMIC);
if (!ops->cursor_src) {
ops->cursor_size = 0;
return -ENOMEM;
}
}
src = ops->cursor_src + sizeof(struct fb_image);
image = (struct fb_image *)ops->cursor_src;
*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);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Simmons | 210 | 55.26% | 13 | 65.00% |
| Antonino A. Daplas | 77 | 20.26% | 3 | 15.00% |
| Dave Jones | 59 | 15.53% | 1 | 5.00% |
| Franck Bui-Huu | 19 | 5.00% | 1 | 5.00% |
| Benjamin Herrenschmidt | 9 | 2.37% | 1 | 5.00% |
| Andrew Morton | 6 | 1.58% | 1 | 5.00% |
| Total | 380 | 100.00% | 20 | 100.00% |
EXPORT_SYMBOL(soft_cursor);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Simmons | 215 | 53.22% | 15 | 57.69% |
| Antonino A. Daplas | 77 | 19.06% | 3 | 11.54% |
| Dave Jones | 59 | 14.60% | 1 | 3.85% |
| Franck Bui-Huu | 19 | 4.70% | 1 | 3.85% |
| Linus Torvalds (pre-git) | 15 | 3.71% | 2 | 7.69% |
| Benjamin Herrenschmidt | 9 | 2.23% | 1 | 3.85% |
| Andrew Morton | 6 | 1.49% | 1 | 3.85% |
| Adrian Bunk | 3 | 0.74% | 1 | 3.85% |
| Uwe Kleine-König | 1 | 0.25% | 1 | 3.85% |
| Total | 404 | 100.00% | 26 | 100.00% |
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