diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2019-09-27 12:12:57 +0300 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2019-10-04 11:00:40 +0300 |
| commit | 6ae04536e747ea3d9702c528ae5c4d3be171f207 (patch) | |
| tree | 09c7428488e288ba7888e1777a5349aba9ba8926 /drivers/gpu/drm/mgag200 | |
| parent | 49b8d5aeaf816ed8308027da377a23ef686dd2a5 (diff) | |
| download | linux-6ae04536e747ea3d9702c528ae5c4d3be171f207.tar.xz | |
drm/mgag200: Add separate move-cursor function
Adding mgag200_move_cursor() makes the cursor code more consistent and
will become handy when we move to universal cursor planes.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190927091301.10574-4-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/mgag200')
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_cursor.c | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_cursor.c b/drivers/gpu/drm/mgag200/mgag200_cursor.c index d39e2bc57a70..621960723a3a 100644 --- a/drivers/gpu/drm/mgag200/mgag200_cursor.c +++ b/drivers/gpu/drm/mgag200/mgag200_cursor.c @@ -25,6 +25,24 @@ static void mgag200_hide_cursor(struct mga_device *mdev) mdev->cursor.pixels_current = NULL; } +static void mgag200_move_cursor(struct mga_device *mdev, int x, int y) +{ + if (WARN_ON(x <= 0)) + return; + if (WARN_ON(y <= 0)) + return; + if (WARN_ON(x & ~0xffff)) + return; + if (WARN_ON(y & ~0xffff)) + return; + + WREG8(MGA_CURPOSXL, x & 0xff); + WREG8(MGA_CURPOSXH, (x>>8) & 0xff); + + WREG8(MGA_CURPOSYL, y & 0xff); + WREG8(MGA_CURPOSYH, (y>>8) & 0xff); +} + int mgag200_cursor_init(struct mga_device *mdev) { struct drm_device *dev = mdev->dev; @@ -252,19 +270,12 @@ err_drm_gem_object_put_unlocked: int mgag200_crtc_cursor_move(struct drm_crtc *crtc, int x, int y) { struct mga_device *mdev = (struct mga_device *)crtc->dev->dev_private; + /* Our origin is at (64,64) */ x += 64; y += 64; - BUG_ON(x <= 0); - BUG_ON(y <= 0); - BUG_ON(x & ~0xffff); - BUG_ON(y & ~0xffff); + mgag200_move_cursor(mdev, x, y); - WREG8(MGA_CURPOSXL, x & 0xff); - WREG8(MGA_CURPOSXH, (x>>8) & 0xff); - - WREG8(MGA_CURPOSYL, y & 0xff); - WREG8(MGA_CURPOSYH, (y>>8) & 0xff); return 0; } |