linux-kernel - [PATCH 2/2] drm/msm/dpu: Wire up needs

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Message-Id: <20210508195641.397198-3-robdclark@gmail.com>
Date:   Sat,  8 May 2021 12:56:39 -0700
From:   Rob Clark <robdclark@...il.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     Rob Clark <robdclark@...omium.org>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Abhinav Kumar <abhinavk@...eaurora.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Maxime Ripard <maxime@...no.tech>,
        Kalyan Thota <kalyan_t@...eaurora.org>,
        Qinglang Miao <miaoqinglang@...wei.com>,
        Hongbo Yao <yaohongbo@...wei.com>,
        linux-arm-msm@...r.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU),
        freedreno@...ts.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO
        GPU), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 2/2] drm/msm/dpu: Wire up needs_dirtyfb

From: Rob Clark <robdclark@...omium.org>

Signed-off-by: Rob Clark <robdclark@...omium.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 5a74f93e29da..868ee6136438 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -143,6 +143,19 @@ static bool dpu_crtc_get_scanout_position(struct drm_crtc *crtc,
 	return true;
 }
 
+static bool dpu_crtc_needs_dirtyfb(struct drm_crtc *crtc)
+{
+	struct drm_encoder *encoder;
+
+	drm_for_each_encoder_mask (encoder, crtc->dev, crtc->state->encoder_mask) {
+		if (dpu_encoder_get_intf_mode(encoder) == INTF_MODE_CMD) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
 static void _dpu_crtc_setup_blend_cfg(struct dpu_crtc_mixer *mixer,
 		struct dpu_plane_state *pstate, struct dpu_format *format)
 {
@@ -1343,6 +1356,7 @@ static const struct drm_crtc_helper_funcs dpu_crtc_helper_funcs = {
 	.atomic_begin = dpu_crtc_atomic_begin,
 	.atomic_flush = dpu_crtc_atomic_flush,
 	.get_scanout_position = dpu_crtc_get_scanout_position,
+	.needs_dirtyfb = dpu_crtc_needs_dirtyfb,
 };
 
 /* initialize crtc */
-- 
2.30.2