[PATCH 03/12] drm/msm/dpu: add writeback blocks to DPU RM
Abhinav Kumar
quic_abhinavk at quicinc.com
Fri Feb 4 21:17:16 UTC 2022
Add writeback blocks to DPU resource manager so that
writeback encoders can request for writeback hardware blocks
through RM and their usage can be tracked.
Signed-off-by: Abhinav Kumar <quic_abhinavk at quicinc.com>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 3 ++
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 2 +
drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 71 +++++++++++++++++++++++++++++
drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h | 2 +
4 files changed, 78 insertions(+)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
index e241914..cc10436 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark at gmail.com>
@@ -21,9 +22,11 @@
/**
* Encoder functions and data types
* @intfs: Interfaces this encoder is using, INTF_MODE_NONE if unused
+ * @wbs: Writeback blocks this encoder is using
*/
struct dpu_encoder_hw_resources {
enum dpu_intf_mode intfs[INTF_MAX];
+ enum dpu_intf_mode wbs[WB_MAX];
};
/**
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
index 2d385b4..1e00804 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark at gmail.com>
@@ -146,6 +147,7 @@ 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 wb_to_enc_id[WB_MAX - WB_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 f9c83d6..edd0b7a 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
@@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
*/
@@ -9,6 +10,7 @@
#include "dpu_hw_ctl.h"
#include "dpu_hw_pingpong.h"
#include "dpu_hw_intf.h"
+#include "dpu_hw_wb.h"
#include "dpu_hw_dspp.h"
#include "dpu_hw_merge3d.h"
#include "dpu_encoder.h"
@@ -75,6 +77,14 @@ int dpu_rm_destroy(struct dpu_rm *rm)
dpu_hw_intf_destroy(hw);
}
}
+ for (i = 0; i < ARRAY_SIZE(rm->wb_blks); i++) {
+ struct dpu_hw_wb *hw;
+
+ if (rm->wb_blks[i]) {
+ hw = to_dpu_hw_wb(rm->wb_blks[i]);
+ dpu_hw_wb_destroy(hw);
+ }
+ }
return 0;
}
@@ -187,6 +197,24 @@ int dpu_rm_init(struct dpu_rm *rm,
rm->intf_blks[intf->id - INTF_0] = &hw->base;
}
+ for (i = 0; i < cat->wb_count; i++) {
+ struct dpu_hw_wb *hw;
+ const struct dpu_wb_cfg *wb = &cat->wb[i];
+
+ if (wb->id < WB_0 || wb->id >= WB_MAX) {
+ DPU_ERROR("skip intf %d with invalid id\n", wb->id);
+ continue;
+ }
+
+ hw = dpu_hw_wb_init(wb->id, mmio, cat);
+ if (IS_ERR_OR_NULL(hw)) {
+ rc = PTR_ERR(hw);
+ DPU_ERROR("failed wb object creation: err %d\n", rc);
+ goto fail;
+ }
+ rm->wb_blks[wb->id - WB_0] = &hw->base;
+ }
+
for (i = 0; i < cat->ctl_count; i++) {
struct dpu_hw_ctl *hw;
const struct dpu_ctl_cfg *ctl = &cat->ctl[i];
@@ -479,6 +507,33 @@ static int _dpu_rm_reserve_intf(
return 0;
}
+static int _dpu_rm_reserve_wb(
+ struct dpu_rm *rm,
+ struct dpu_global_state *global_state,
+ uint32_t enc_id,
+ uint32_t id)
+{
+ int idx = id - WB_0;
+
+ if (idx < 0 || idx >= ARRAY_SIZE(rm->wb_blks)) {
+ DPU_ERROR("invalid intf id: %d", id);
+ return -EINVAL;
+ }
+
+ if (!rm->wb_blks[idx]) {
+ DPU_ERROR("couldn't find wb id %d\n", id);
+ return -EINVAL;
+ }
+
+ if (reserved_by_other(global_state->wb_to_enc_id, idx, enc_id)) {
+ DPU_ERROR("intf id %d already reserved\n", id);
+ return -ENAVAIL;
+ }
+
+ global_state->wb_to_enc_id[idx] = enc_id;
+ return 0;
+}
+
static int _dpu_rm_reserve_intf_related_hw(
struct dpu_rm *rm,
struct dpu_global_state *global_state,
@@ -497,6 +552,15 @@ static int _dpu_rm_reserve_intf_related_hw(
return ret;
}
+ for (i = 0; i < ARRAY_SIZE(hw_res->wbs); i++) {
+ if (hw_res->wbs[i] == INTF_MODE_NONE)
+ continue;
+ id = i + WB_0;
+ ret = _dpu_rm_reserve_wb(rm, global_state, enc_id, id);
+ if (ret)
+ return ret;
+ }
+
return ret;
}
@@ -567,6 +631,8 @@ 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->wb_to_enc_id,
+ ARRAY_SIZE(global_state->wb_to_enc_id), enc->base.id);
}
int dpu_rm_reserve(
@@ -635,6 +701,11 @@ int dpu_rm_get_assigned_resources(struct dpu_rm *rm,
hw_to_enc_id = global_state->intf_to_enc_id;
max_blks = ARRAY_SIZE(rm->intf_blks);
break;
+ case DPU_HW_BLK_WB:
+ hw_blks = rm->wb_blks;
+ hw_to_enc_id = global_state->wb_to_enc_id;
+ max_blks = ARRAY_SIZE(rm->wb_blks);
+ break;
case DPU_HW_BLK_DSPP:
hw_blks = rm->dspp_blks;
hw_to_enc_id = global_state->dspp_to_enc_id;
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
index 1f12c8d..a021409 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
*/
@@ -30,6 +31,7 @@ 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 *wb_blks[WB_MAX - WB_0];
uint32_t lm_max_width;
};
--
2.7.4
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