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Message-ID: <20241016-concurrent-wb-v3-23-a33cf9b93835@quicinc.com>
Date: Wed, 16 Oct 2024 18:21:29 -0700
From: Jessica Zhang <quic_jesszhan@...cinc.com>
To: Rob Clark <robdclark@...il.com>,
Dmitry Baryshkov
<dmitry.baryshkov@...aro.org>,
<quic_abhinavk@...cinc.com>, Sean Paul
<sean@...rly.run>,
Marijn Suijten <marijn.suijten@...ainline.org>,
"David
Airlie" <airlied@...il.com>,
Maarten Lankhorst
<maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
Simona Vetter <simona@...ll.ch>,
Simona Vetter <simona.vetter@...ll.ch>
CC: <quic_ebharadw@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
<dri-devel@...ts.freedesktop.org>, <freedreno@...ts.freedesktop.org>,
<linux-kernel@...r.kernel.org>, Rob Clark <robdclark@...omium.org>,
Ville Syrjälä <ville.syrjala@...ux.intel.com>,
"Jessica
Zhang" <quic_jesszhan@...cinc.com>
Subject: [PATCH v3 23/23] drm/msm/dpu: Set possible clones for all encoders
Set writeback encoders as possible clones for DSI encoders and vice
versa.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Jessica Zhang <quic_jesszhan@...cinc.com>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 32 +++++++++++++++++++++++++++++
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 2 ++
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 7 +++++--
3 files changed, 39 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 2084f54e4a6235cc65dedcb0003f83d75dd51ec1..7b8fd1041acaea297ead2a4e0b33b43336ce1a1c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -2397,6 +2397,38 @@ static int dpu_encoder_virt_add_phys_encs(
return 0;
}
+/**
+ * dpu_encoder_get_clones - Calculate the possible_clones for DPU encoder
+ * @drm_enc: DRM encoder pointer
+ * Returns: possible_clones mask
+ */
+uint32_t dpu_encoder_get_clones(struct drm_encoder *drm_enc)
+{
+ struct drm_encoder *curr;
+ int type = drm_enc->encoder_type;
+ uint32_t clone_mask = drm_encoder_mask(drm_enc);
+
+ /*
+ * Set writeback as possible clones of real-time DSI encoders and vice
+ * versa
+ *
+ * Writeback encoders can't be clones of each other and DSI
+ * encoders can't be clones of each other.
+ *
+ * TODO: Add DP encoders as valid possible clones for writeback encoders
+ * (and vice versa) once concurrent writeback has been validated for DP
+ */
+ drm_for_each_encoder(curr, drm_enc->dev) {
+ if ((type == DRM_MODE_ENCODER_VIRTUAL &&
+ curr->encoder_type == DRM_MODE_ENCODER_DSI) ||
+ (type == DRM_MODE_ENCODER_DSI &&
+ curr->encoder_type == DRM_MODE_ENCODER_VIRTUAL))
+ clone_mask |= drm_encoder_mask(curr);
+ }
+
+ return clone_mask;
+}
+
static int dpu_encoder_setup_display(struct dpu_encoder_virt *dpu_enc,
struct dpu_kms *dpu_kms,
struct msm_display_info *disp_info)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
index deaa0463b289fd12eaa0bb4179c58d04425007a6..1692e7de079d6e2e3d7ae20cece30b5b297a7763 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
@@ -98,6 +98,8 @@ enum dpu_intf_mode dpu_encoder_get_intf_mode(struct drm_encoder *encoder);
*/
void dpu_encoder_virt_runtime_resume(struct drm_encoder *encoder);
+uint32_t dpu_encoder_get_clones(struct drm_encoder *drm_enc);
+
/**
* dpu_encoder_init - initialize virtual encoder object
* @dev: Pointer to drm device structure
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 47e304b357e89b8b3683c37b2abb447411e1e455..5effa108f3282cc52e6a15d71689e9def1205ebc 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -2,7 +2,7 @@
/*
* Copyright (C) 2013 Red Hat
* Copyright (c) 2014-2018, The Linux Foundation. All rights reserved.
- * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved.
*
* Author: Rob Clark <robdclark@...il.com>
*/
@@ -793,8 +793,11 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
return ret;
num_encoders = 0;
- drm_for_each_encoder(encoder, dev)
+ drm_for_each_encoder(encoder, dev) {
num_encoders++;
+ if (catalog->cwb_count > 0)
+ encoder->possible_clones = dpu_encoder_get_clones(encoder);
+ }
max_crtc_count = min(catalog->mixer_count, num_encoders);
--
2.34.1
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