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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 <mario.kleiner.de@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Mario Kleiner 2016-07-19 20:58:57 +02:00 committed by Eric Anholt
parent 29b4817d40
commit e2298350de
1 changed files with 11 additions and 0 deletions
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11
drivers/gpu/drm/vc4/vc4_dpi.c
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@ -340,9 +340,20 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
} }
} }
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 = { static const struct drm_encoder_helper_funcs vc4_dpi_encoder_helper_funcs = {
.disable = vc4_dpi_encoder_disable, .disable = vc4_dpi_encoder_disable,
.enable = vc4_dpi_encoder_enable, .enable = vc4_dpi_encoder_enable,
.mode_fixup = vc4_dpi_encoder_mode_fixup,
}; };
static const struct of_device_id vc4_dpi_dt_match[] = { static const struct of_device_id vc4_dpi_dt_match[] = {