From:   Vinod Koul <vkoul@kernel.org>
To:     Rob Clark <robdclark@gmail.com>
Cc:     linux-arm-msm@vger.kernel.org,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Vinod Koul <vkoul@kernel.org>, David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Jonathan Marek <jonathan@marek.ca>,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
        Abhinav Kumar <abhinavk@codeaurora.org>,
        Jeffrey Hugo <jeffrey.l.hugo@gmail.com>,
        Sumit Semwal <sumit.semwal@linaro.org>,
        linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
        freedreno@lists.freedesktop.org
Subject: [PATCH v3 10/13] drm/msm/disp/dpu1: Add DSC support in RM
Date:   Tue, 16 Nov 2021 11:52:53 +0530
Message-Id: <20211116062256.2417186-11-vkoul@kernel.org>
In-Reply-To: <20211116062256.2417186-1-vkoul@kernel.org>
References: <20211116062256.2417186-1-vkoul@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

This add the bits in RM to enable the DSC blocks

Signed-off-by: Vinod Koul <vkoul@kernel.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h |  1 +
 drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c  | 66 +++++++++++++++++++++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h  |  1 +
 3 files changed, 68 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
index 775bcbda860f..fd6672efb096 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
@@ -146,6 +146,7 @@ struct dpu_global_state {
 	uint32_t ctl_to_enc_id[CTL_MAX - CTL_0];
 	uint32_t intf_to_enc_id[INTF_MAX - INTF_0];
 	uint32_t dspp_to_enc_id[DSPP_MAX - DSPP_0];
+	uint32_t dsc_to_enc_id[DSC_MAX - DSC_0];
 };
 
 struct dpu_global_state
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
index f9c83d6e427a..c9d0fc765aaf 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
@@ -11,6 +11,7 @@
 #include "dpu_hw_intf.h"
 #include "dpu_hw_dspp.h"
 #include "dpu_hw_merge3d.h"
+#include "dpu_hw_dsc.h"
 #include "dpu_encoder.h"
 #include "dpu_trace.h"
 
@@ -75,6 +76,14 @@ int dpu_rm_destroy(struct dpu_rm *rm)
 			dpu_hw_intf_destroy(hw);
 		}
 	}
+	for (i = 0; i < ARRAY_SIZE(rm->dsc_blks); i++) {
+		struct dpu_hw_dsc *hw;
+
+		if (rm->dsc_blks[i]) {
+			hw = to_dpu_hw_dsc(rm->dsc_blks[i]);
+			dpu_hw_dsc_destroy(hw);
+		}
+	}
 
 	return 0;
 }
@@ -221,6 +230,19 @@ int dpu_rm_init(struct dpu_rm *rm,
 		rm->dspp_blks[dspp->id - DSPP_0] = &hw->base;
 	}
 
+	for (i = 0; i < cat->dsc_count; i++) {
+		struct dpu_hw_dsc *hw;
+		const struct dpu_dsc_cfg *dsc = &cat->dsc[i];
+
+		hw = dpu_hw_dsc_init(dsc->id, mmio, cat);
+		if (IS_ERR_OR_NULL(hw)) {
+			rc = PTR_ERR(hw);
+			DPU_ERROR("failed dsc object creation: err %d\n", rc);
+			goto fail;
+		}
+		rm->dsc_blks[dsc->id - DSC_0] = &hw->base;
+	}
+
 	return 0;
 
 fail:
@@ -476,6 +498,7 @@ static int _dpu_rm_reserve_intf(
 	}
 
 	global_state->intf_to_enc_id[idx] = enc_id;
+
 	return 0;
 }
 
@@ -500,6 +523,38 @@ static int _dpu_rm_reserve_intf_related_hw(
 	return ret;
 }
 
+static int _dpu_rm_reserve_dsc(struct dpu_rm *rm,
+			       struct dpu_global_state *global_state,
+			       struct drm_encoder *enc,
+			       const struct msm_display_topology *top)
+{
+	struct msm_drm_private *priv;
+	int num_dsc = top->num_dsc;
+	int i;
+
+	priv = enc->dev->dev_private;
+
+	if (!priv)
+		return -EIO;
+
+	/* check if DSC is supported */
+	if (!priv->dsc)
+		return 0;
+
+	/* check if DSC required are allocated or not */
+	for (i = 0; i < num_dsc; i++) {
+		if (global_state->dsc_to_enc_id[i]) {
+			DPU_ERROR("DSC %d is already allocated\n", i);
+			return -EIO;
+		}
+	}
+
+	for (i = 0; i < num_dsc; i++)
+		global_state->dsc_to_enc_id[i] = enc->base.id;
+
+	return 0;
+}
+
 static int _dpu_rm_make_reservation(
 		struct dpu_rm *rm,
 		struct dpu_global_state *global_state,
@@ -526,6 +581,10 @@ static int _dpu_rm_make_reservation(
 	if (ret)
 		return ret;
 
+	ret  = _dpu_rm_reserve_dsc(rm, global_state, enc, &reqs->topology);
+	if (ret)
+		return ret;
+
 	return ret;
 }
 
@@ -567,6 +626,8 @@ void dpu_rm_release(struct dpu_global_state *global_state,
 		ARRAY_SIZE(global_state->ctl_to_enc_id), enc->base.id);
 	_dpu_rm_clear_mapping(global_state->intf_to_enc_id,
 		ARRAY_SIZE(global_state->intf_to_enc_id), enc->base.id);
+	_dpu_rm_clear_mapping(global_state->dsc_to_enc_id,
+		ARRAY_SIZE(global_state->dsc_to_enc_id), enc->base.id);
 }
 
 int dpu_rm_reserve(
@@ -640,6 +701,11 @@ int dpu_rm_get_assigned_resources(struct dpu_rm *rm,
 		hw_to_enc_id = global_state->dspp_to_enc_id;
 		max_blks = ARRAY_SIZE(rm->dspp_blks);
 		break;
+	case DPU_HW_BLK_DSC:
+		hw_blks = rm->dsc_blks;
+		hw_to_enc_id = global_state->dsc_to_enc_id;
+		max_blks = ARRAY_SIZE(rm->dsc_blks);
+		break;
 	default:
 		DPU_ERROR("blk type %d not managed by rm\n", type);
 		return 0;
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
index 1f12c8d5b8aa..278d2a510b80 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
@@ -30,6 +30,7 @@ struct dpu_rm {
 	struct dpu_hw_blk *intf_blks[INTF_MAX - INTF_0];
 	struct dpu_hw_blk *dspp_blks[DSPP_MAX - DSPP_0];
 	struct dpu_hw_blk *merge_3d_blks[MERGE_3D_MAX - MERGE_3D_0];
+	struct dpu_hw_blk *dsc_blks[DSC_MAX - DSC_0];
 
 	uint32_t lm_max_width;
 };
-- 
2.31.1