drm/armada: add CRTC mode validation (7f07ce0f) · Commits · 戴 / test

drivers/gpu/drm/armada/armada_crtc.c

+20 −0

Original line number	Diff line number	Diff line
		@@ -168,6 +168,25 @@ static void armada_drm_update_gamma(struct drm_crtc *crtc)
		}
		}

		static enum drm_mode_status armada_drm_crtc_mode_valid(struct drm_crtc *crtc,
		const struct drm_display_mode *mode)
		{
		if (mode->vscan > 1)
		return MODE_NO_VSCAN;

		if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
		return MODE_NO_DBLESCAN;

		if (mode->flags & DRM_MODE_FLAG_HSKEW)
		return MODE_H_ILLEGAL;

		if (mode->flags & (DRM_MODE_FLAG_BCAST \| DRM_MODE_FLAG_PIXMUX \|
		DRM_MODE_FLAG_CLKDIV2))
		return MODE_BAD;

		return MODE_OK;
		}

		/* The mode_config.mutex will be held for this call */
		static bool armada_drm_crtc_mode_fixup(struct drm_crtc *crtc,
		const struct drm_display_mode mode, struct drm_display_mode adj)
		@@ -499,6 +518,7 @@ static void armada_drm_crtc_atomic_enable(struct drm_crtc *crtc,
		}

		static const struct drm_crtc_helper_funcs armada_crtc_helper_funcs = {
		.mode_valid = armada_drm_crtc_mode_valid,
		.mode_fixup = armada_drm_crtc_mode_fixup,
		.mode_set_nofb = armada_drm_crtc_mode_set_nofb,
		.atomic_check = armada_drm_crtc_atomic_check,