Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / video / console / softcursor.c

diff --git a/kernel/drivers/video/console/softcursor.c b/kernel/drivers/video/console/softcursor.c
new file mode 100644 (file)
index 0000000..46dd8f5
--- /dev/null
+++ b/kernel/drivers/video/console/softcursor.c
@@ -0,0 +1,82 @@
+/*
+ * 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;
+}
+
+EXPORT_SYMBOL(soft_cursor);
+
+MODULE_AUTHOR("James Simmons <jsimmons@users.sf.net>");
+MODULE_DESCRIPTION("Generic software cursor");
+MODULE_LICENSE("GPL");