2018-01-30 11:42 GMT+01:00 Philippe Cornu <philippe.cornu@xxxxxx>: > To optimize data transfers, align pitch on 128 bytes & height > on 4 bytes. This optimization is not applicable on hw without MMU. > > Signed-off-by: Yannick Fertre <yannick.fertre@xxxxxx> > Signed-off-by: Vincent Abriou <vincent.abriou@xxxxxx> > Signed-off-by: Philippe Cornu <philippe.cornu@xxxxxx> Applied on drm-misc-next. Regards, Benjamin > --- > Changes in v2: Rename stm_dumb_create() to stm_gem_cma_dumb_create() and > move CONFIG_MMU inside the function following comments from Benjamin > Gaignard. > > drivers/gpu/drm/stm/drv.c | 20 +++++++++++++++++++- > 1 file changed, 19 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/stm/drv.c b/drivers/gpu/drm/stm/drv.c > index 8fe954c27fba..8bc7e8418b8d 100644 > --- a/drivers/gpu/drm/stm/drv.c > +++ b/drivers/gpu/drm/stm/drv.c > @@ -31,6 +31,24 @@ static const struct drm_mode_config_funcs drv_mode_config_funcs = { > .atomic_commit = drm_atomic_helper_commit, > }; > > +static int stm_gem_cma_dumb_create(struct drm_file *file, > + struct drm_device *dev, > + struct drm_mode_create_dumb *args) > +{ > +#ifdef CONFIG_MMU > + unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); > + > + /* > + * in order to optimize data transfer, pitch is aligned on > + * 128 bytes, height is aligned on 4 bytes > + */ > + args->pitch = roundup(min_pitch, 128); > + args->height = roundup(args->height, 4); > +#endif > + > + return drm_gem_cma_dumb_create_internal(file, dev, args); > +} > + > DEFINE_DRM_GEM_CMA_FOPS(drv_driver_fops); > > static struct drm_driver drv_driver = { > @@ -44,7 +62,7 @@ static struct drm_driver drv_driver = { > .minor = 0, > .patchlevel = 0, > .fops = &drv_driver_fops, > - .dumb_create = drm_gem_cma_dumb_create, > + .dumb_create = stm_gem_cma_dumb_create, > .prime_handle_to_fd = drm_gem_prime_handle_to_fd, > .prime_fd_to_handle = drm_gem_prime_fd_to_handle, > .gem_free_object_unlocked = drm_gem_cma_free_object, > -- > 2.15.1 > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel