From 069acde1ae77a0807062df0b009a51809cb3aa2a Mon Sep 17 00:00:00 2001 From: Mario Kleiner Date: Tue, 19 Jul 2016 20:58:57 +0200 Subject: [PATCH] drm/vc4: Disallow interlaced modes on DPI. We already don't expose such modes to userspace, but make sure userspace can't sneak some interlaced mode in. Signed-off-by: Mario Kleiner Signed-off-by: Eric Anholt --- drivers/gpu/drm/vc4/vc4_dpi.c | 11 +++++++++++ 1 file changed, 11 insertions(+) --- a/drivers/gpu/drm/vc4/vc4_dpi.c +++ b/drivers/gpu/drm/vc4/vc4_dpi.c @@ -349,9 +349,20 @@ static void vc4_dpi_encoder_enable(struc } } +static bool vc4_dpi_encoder_mode_fixup(struct drm_encoder *encoder, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) + return false; + + return true; +} + static const struct drm_encoder_helper_funcs vc4_dpi_encoder_helper_funcs = { .disable = vc4_dpi_encoder_disable, .enable = vc4_dpi_encoder_enable, + .mode_fixup = vc4_dpi_encoder_mode_fixup, }; static const struct of_device_id vc4_dpi_dt_match[] = {