diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2015-11-30 14:53:26 +0100 |
|---|---|---|
| committer | Inki Dae <daeinki@gmail.com> | 2015-12-13 22:22:57 +0900 |
| commit | 6178d3d1bbedd3fe08bb194272bc24f7f92282e7 (patch) | |
| tree | ffede04af65276538e51b71f62d5dab9ab835d13 /drivers/gpu/drm/exynos/exynos_drm_plane.c | |
| parent | fd2d2fc2db28d3a2a18b7504e2d6d8b0753f90e8 (diff) | |
drm/exynos: add generic check for plane state
This patch adds generic check for plane state - display area dimensions,
so drivers can always assume that they get valid plane state to set.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_plane.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_plane.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c b/drivers/gpu/drm/exynos/exynos_drm_plane.c index b620d7a76799..9eaa8627175f 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_plane.c +++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c @@ -173,6 +173,36 @@ static struct drm_plane_funcs exynos_plane_funcs = { .atomic_destroy_state = exynos_drm_plane_destroy_state, }; +static int +exynos_drm_plane_check_size(const struct exynos_drm_plane_config *config, + struct exynos_drm_plane_state *state) +{ + bool width_ok = false, height_ok = false; + + if (config->capabilities & EXYNOS_DRM_PLANE_CAP_SCALE) + return 0; + + if (state->src.w == state->crtc.w) + width_ok = true; + + if (state->src.h == state->crtc.h) + height_ok = true; + + if ((config->capabilities & EXYNOS_DRM_PLANE_CAP_DOUBLE) && + state->h_ratio == (1 << 15)) + width_ok = true; + + if ((config->capabilities & EXYNOS_DRM_PLANE_CAP_DOUBLE) && + state->v_ratio == (1 << 15)) + height_ok = true; + + if (width_ok & height_ok) + return 0; + + DRM_DEBUG_KMS("scaling mode is not supported"); + return -ENOTSUPP; +} + static int exynos_plane_atomic_check(struct drm_plane *plane, struct drm_plane_state *state) { @@ -187,6 +217,7 @@ static int exynos_plane_atomic_check(struct drm_plane *plane, /* translate state into exynos_state */ exynos_plane_mode_set(exynos_state); + ret = exynos_drm_plane_check_size(exynos_plane->config, exynos_state); return ret; } |