drm: vc4: Use crtc->mode_valid() and encoder->mode_valid() callbacks

Now that we have a callback to check if crtc and encoder supports a
given mode we can use it in vc4 so that we restrict the number of
probed modes to the ones we can actually display.

Also, remove the mode_fixup() calls as these are no longer needed
because mode_valid() will be called before.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Carlos Palminha <palminha@synopsys.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Eric Anholt <eric@anholt.net>
Cc: David Airlie <airlied@linux.ie>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Compile-tested and Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/5bea792f91074688c88a2dab8b0a90eec6e98fdf.1495720737.git.joabreu@synopsys.com

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
index 403bbd5..e3f03ef 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -546,18 +546,17 @@ static void vc4_crtc_enable(struct drm_crtc *crtc)
        drm_crtc_vblank_on(crtc);
 }
 
-static bool vc4_crtc_mode_fixup(struct drm_crtc *crtc,
-                               const struct drm_display_mode *mode,
-                               struct drm_display_mode *adjusted_mode)
+static enum drm_mode_status vc4_crtc_mode_valid(struct drm_crtc *crtc,
+                                               const struct drm_display_mode *mode)
 {
        /* Do not allow doublescan modes from user space */
-       if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN) {
+       if (mode->flags & DRM_MODE_FLAG_DBLSCAN) {
                DRM_DEBUG_KMS("[CRTC:%d] Doublescan mode rejected.\n",
                              crtc->base.id);
-               return false;
+               return MODE_NO_DBLESCAN;
        }
 
-       return true;
+       return MODE_OK;
 }
 
 static int vc4_crtc_atomic_check(struct drm_crtc *crtc,
@@ -867,7 +866,7 @@ static const struct drm_crtc_helper_funcs vc4_crtc_helper_funcs = {
        .mode_set_nofb = vc4_crtc_mode_set_nofb,
        .disable = vc4_crtc_disable,
        .enable = vc4_crtc_enable,
-       .mode_fixup = vc4_crtc_mode_fixup,
+       .mode_valid = vc4_crtc_mode_valid,
        .atomic_check = vc4_crtc_atomic_check,
        .atomic_flush = vc4_crtc_atomic_flush,
 };

diff --git a/drivers/gpu/drm/vc4/vc4_dpi.c b/drivers/gpu/drm/vc4/vc4_dpi.c
index 2e0fe46..519cefe 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_dpi.c
+++ b/drivers/gpu/drm/vc4/vc4_dpi.c
@@ -224,20 +224,19 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
                DRM_ERROR("Failed to set clock rate: %d\n", ret);
 }
 
-static bool vc4_dpi_encoder_mode_fixup(struct drm_encoder *encoder,
-                                      const struct drm_display_mode *mode,
-                                      struct drm_display_mode *adjusted_mode)
+static enum drm_mode_status vc4_dpi_encoder_mode_valid(struct drm_encoder *encoder,
+                                                      const struct drm_display_mode *mode)
 {
-       if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
-               return false;
+       if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+               return MODE_NO_INTERLACE;
 
-       return true;
+       return MODE_OK;
 }
 
 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,
+       .mode_valid = vc4_dpi_encoder_mode_valid,
 };
 
 static const struct of_device_id vc4_dpi_dt_match[] = {