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b45293799f
Add an interconnect driver for the External Memory Interface (EMI),
voting for bus bandwidth over the Dynamic Voltage and Frequency Scaling
Resource Collector (DVFSRC).
ICC provider ICC Nodes
---- ----
--------- |CPU | |--- |VPU |
----- | |----- ---- | ----
|DRAM |--|DRAM | ---- | ----
| |--|scheduler|----- |GPU | |--- |DISP|
| |--|(EMI) | ---- | ----
| |--| | ----- | ----
----- | |----- |MMSYS|--|--- |VDEC|
--------- ----- | ----
/|\ | ----
|change DRAM freq |--- |VENC|
---------- | ----
| DVFSR | |
| | | ----
---------- |--- |IMG |
| ----
| ----
|--- |CAM |
----
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240610085735.147134-8-angelogioacchino.delregno@collabora.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>
41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2021 MediaTek Inc.
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* Copyright (c) 2024 Collabora Ltd.
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* AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
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*/
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#ifndef __DRIVERS_INTERCONNECT_MEDIATEK_ICC_EMI_H
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#define __DRIVERS_INTERCONNECT_MEDIATEK_ICC_EMI_H
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/**
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* struct mtk_icc_node - Mediatek EMI Interconnect Node
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* @name: The interconnect node name which is shown in debugfs
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* @ep: Type of this endpoint
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* @id: Unique node identifier
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* @sum_avg: Current sum aggregate value of all average bw requests in kBps
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* @max_peak: Current max aggregate value of all peak bw requests in kBps
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* @num_links: The total number of @links
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* @links: Array of @id linked to this node
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*/
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struct mtk_icc_node {
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unsigned char *name;
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int ep;
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u16 id;
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u64 sum_avg;
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u64 max_peak;
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u16 num_links;
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u16 links[] __counted_by(num_links);
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};
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struct mtk_icc_desc {
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struct mtk_icc_node **nodes;
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size_t num_nodes;
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};
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int mtk_emi_icc_probe(struct platform_device *pdev);
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void mtk_emi_icc_remove(struct platform_device *pdev);
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#endif /* __DRIVERS_INTERCONNECT_MEDIATEK_ICC_EMI_H */
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