From 6178d3d1bbedd3fe08bb194272bc24f7f92282e7 Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Mon, 30 Nov 2015 14:53:26 +0100 Subject: 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 Reviewed-by: Gustavo Padovan Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_drm_plane.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'drivers/gpu/drm/exynos/exynos_drm_plane.c') 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; } -- cgit