diff options
| -rw-r--r-- | drivers/gpu/drm/ast/ast_dp.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ast/ast_dp.c b/drivers/gpu/drm/ast/ast_dp.c index b984a0f87f85..00d07a905fd5 100644 --- a/drivers/gpu/drm/ast/ast_dp.c +++ b/drivers/gpu/drm/ast/ast_dp.c @@ -300,6 +300,19 @@ static const struct drm_encoder_funcs ast_astdp_encoder_funcs = { .destroy = drm_encoder_cleanup, }; +static enum drm_mode_status +ast_astdp_encoder_helper_mode_valid(struct drm_encoder *encoder, + const struct drm_display_mode *mode) +{ + int res; + + res = ast_astdp_get_mode_index(mode->hdisplay, mode->vdisplay); + if (res < 0) + return MODE_NOMODE; + + return MODE_OK; +} + static void ast_astdp_encoder_helper_atomic_mode_set(struct drm_encoder *encoder, struct drm_crtc_state *crtc_state, struct drm_connector_state *conn_state) @@ -389,6 +402,7 @@ static int ast_astdp_encoder_helper_atomic_check(struct drm_encoder *encoder, } static const struct drm_encoder_helper_funcs ast_astdp_encoder_helper_funcs = { + .mode_valid = ast_astdp_encoder_helper_mode_valid, .atomic_mode_set = ast_astdp_encoder_helper_atomic_mode_set, .atomic_enable = ast_astdp_encoder_helper_atomic_enable, .atomic_disable = ast_astdp_encoder_helper_atomic_disable, |