diff options
| -rw-r--r-- | drivers/gpu/drm/omapdrm/omap_fb.c | 50 |
1 files changed, 23 insertions, 27 deletions
diff --git a/drivers/gpu/drm/omapdrm/omap_fb.c b/drivers/gpu/drm/omapdrm/omap_fb.c index 195ab4c86244..016aac9a7731 100644 --- a/drivers/gpu/drm/omapdrm/omap_fb.c +++ b/drivers/gpu/drm/omapdrm/omap_fb.c @@ -387,6 +387,7 @@ struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev, struct omap_framebuffer *omap_fb = NULL; struct drm_framebuffer *fb = NULL; enum omap_color_mode dss_format = 0; + unsigned int pitch = mode_cmd->pitches[0]; int ret, i; DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)", @@ -420,41 +421,36 @@ struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev, omap_fb->dss_format = dss_format; mutex_init(&omap_fb->lock); + /* + * The code below assumes that no format use more than two planes, and + * that the two planes of multiplane formats need the same number of + * bytes per pixel. + */ + if (format->num_planes == 2 && pitch != mode_cmd->pitches[1]) { + dev_err(dev->dev, "pitches differ between planes 0 and 1\n"); + ret = -EINVAL; + goto fail; + } + + if (pitch % format->cpp[0]) { + dev_err(dev->dev, + "buffer pitch (%u bytes) is not a multiple of pixel size (%u bytes)\n", + pitch, format->cpp[0]); + ret = -EINVAL; + goto fail; + } + for (i = 0; i < format->num_planes; i++) { struct plane *plane = &omap_fb->planes[i]; - unsigned int pitch = mode_cmd->pitches[i]; - unsigned int hsub = i == 0 ? 1 : format->hsub; unsigned int vsub = i == 0 ? 1 : format->vsub; unsigned int size; - if (pitch < mode_cmd->width * format->cpp[i] / hsub) { - dev_err(dev->dev, "provided buffer pitch is too small! %d < %d\n", - pitch, mode_cmd->width * format->cpp[i] / hsub); - ret = -EINVAL; - goto fail; - } - - if (pitch % format->cpp[i] != 0) { - dev_err(dev->dev, - "buffer pitch (%d bytes) is not a multiple of pixel size (%d bytes)\n", - pitch, format->cpp[i]); - ret = -EINVAL; - goto fail; - } - size = pitch * mode_cmd->height / vsub; - if (size > (omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i])) { - dev_err(dev->dev, "provided buffer object is too small! %d < %d\n", - bos[i]->size - mode_cmd->offsets[i], size); - ret = -EINVAL; - goto fail; - } - - if (i > 0 && pitch != mode_cmd->pitches[i - 1]) { + if (size > omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i]) { dev_err(dev->dev, - "pitches are not the same between framebuffer planes %d != %d\n", - pitch, mode_cmd->pitches[i - 1]); + "provided buffer object is too small! %d < %d\n", + bos[i]->size - mode_cmd->offsets[i], size); ret = -EINVAL; goto fail; } |