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 <[email protected]>
---
drivers/interconnect/Kconfig | 1 +
drivers/interconnect/Makefile | 1 +
drivers/interconnect/mediatek/Kconfig | 29 ++
drivers/interconnect/mediatek/Makefile | 5 +
drivers/interconnect/mediatek/icc-emi.c | 153 +++++++++++
drivers/interconnect/mediatek/icc-emi.h | 40 +++
drivers/interconnect/mediatek/mt8183.c | 143 ++++++++++
drivers/interconnect/mediatek/mt8195.c | 339 ++++++++++++++++++++++++
8 files changed, 711 insertions(+)
create mode 100644 drivers/interconnect/mediatek/Kconfig
create mode 100644 drivers/interconnect/mediatek/Makefile
create mode 100644 drivers/interconnect/mediatek/icc-emi.c
create mode 100644 drivers/interconnect/mediatek/icc-emi.h
create mode 100644 drivers/interconnect/mediatek/mt8183.c
create mode 100644 drivers/interconnect/mediatek/mt8195.c
diff --git a/drivers/interconnect/Kconfig b/drivers/interconnect/Kconfig
index 5faa8d2aecff..f2e49bd97d31 100644
--- a/drivers/interconnect/Kconfig
+++ b/drivers/interconnect/Kconfig
@@ -12,6 +12,7 @@ menuconfig INTERCONNECT
if INTERCONNECT
source "drivers/interconnect/imx/Kconfig"
+source "drivers/interconnect/mediatek/Kconfig"
source "drivers/interconnect/qcom/Kconfig"
source "drivers/interconnect/samsung/Kconfig"
diff --git a/drivers/interconnect/Makefile b/drivers/interconnect/Makefile
index d0888babb9a1..b0a9a6753b9d 100644
--- a/drivers/interconnect/Makefile
+++ b/drivers/interconnect/Makefile
@@ -5,6 +5,7 @@ icc-core-objs := core.o bulk.o debugfs-client.o
obj-$(CONFIG_INTERCONNECT) += icc-core.o
obj-$(CONFIG_INTERCONNECT_IMX) += imx/
+obj-$(CONFIG_INTERCONNECT_MTK) += mediatek/
obj-$(CONFIG_INTERCONNECT_QCOM) += qcom/
obj-$(CONFIG_INTERCONNECT_SAMSUNG) += samsung/
diff --git a/drivers/interconnect/mediatek/Kconfig b/drivers/interconnect/mediatek/Kconfig
new file mode 100644
index 000000000000..985c849efac3
--- /dev/null
+++ b/drivers/interconnect/mediatek/Kconfig
@@ -0,0 +1,29 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+config INTERCONNECT_MTK
+ bool "MediaTek interconnect drivers"
+ depends on ARCH_MEDIATEK || COMPILE_TEST
+ help
+ Support for MediaTek's bus interconnect hardware.
+
+config INTERCONNECT_MTK_DVFSRC_EMI
+ tristate "MediaTek DVFSRC EMI interconnect driver"
+ depends on INTERCONNECT_MTK && MTK_DVFSRC
+ help
+ This is a driver for the MediaTek External Memory Interface
+ interconnect on SoCs equipped with the integrated Dynamic
+ Voltage Frequency Scaling Resource Collector (DVFSRC) MCU
+
+config INTERCONNECT_MTK_MT8183
+ tristate "MediaTek MT8183 interconnect driver"
+ depends on INTERCONNECT_MTK_DVFSRC_EMI
+ help
+ This is a driver for the MediaTek bus interconnect on MT8183-based
+ platforms.
+
+config INTERCONNECT_MTK_MT8195
+ tristate "MediaTek MT8195 interconnect driver"
+ depends on INTERCONNECT_MTK_DVFSRC_EMI
+ help
+ This is a driver for the MediaTek bus interconnect on MT8195-based
+ platforms.
diff --git a/drivers/interconnect/mediatek/Makefile b/drivers/interconnect/mediatek/Makefile
new file mode 100644
index 000000000000..8e2283a9a5b5
--- /dev/null
+++ b/drivers/interconnect/mediatek/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_INTERCONNECT_MTK_DVFSRC_EMI) += icc-emi.o
+obj-$(CONFIG_INTERCONNECT_MTK_MT8183) += mt8183.o
+obj-$(CONFIG_INTERCONNECT_MTK_MT8195) += mt8195.o
diff --git a/drivers/interconnect/mediatek/icc-emi.c b/drivers/interconnect/mediatek/icc-emi.c
new file mode 100644
index 000000000000..d420c55682d0
--- /dev/null
+++ b/drivers/interconnect/mediatek/icc-emi.c
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * MediaTek External Memory Interface (EMI) Interconnect driver
+ *
+ * Copyright (c) 2021 MediaTek Inc.
+ * Copyright (c) 2024 Collabora Ltd.
+ * AngeloGioacchino Del Regno <[email protected]>
+ */
+
+#include <linux/interconnect.h>
+#include <linux/interconnect-provider.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/soc/mediatek/dvfsrc.h>
+
+#include "icc-emi.h"
+
+static int mtk_emi_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw,
+ u32 peak_bw, u32 *agg_avg, u32 *agg_peak)
+{
+ struct mtk_icc_node *in = node->data;
+
+ *agg_avg += avg_bw;
+ *agg_peak = max_t(u32, *agg_peak, peak_bw);
+
+ in->sum_avg = *agg_avg;
+ in->max_peak = *agg_peak;
+
+ return 0;
+}
+
+static int mtk_emi_icc_set(struct icc_node *src, struct icc_node *dst)
+{
+ struct mtk_icc_node *node = dst->data;
+ struct device *dev;
+ int ret;
+
+ if (unlikely(!src->provider))
+ return -EINVAL;
+
+ dev = src->provider->dev;
+
+ switch (node->ep) {
+ case 0:
+ break;
+ case 1:
+ ret = mtk_dvfsrc_send_request(dev, MTK_DVFSRC_CMD_PEAK_BW, node->max_peak);
+ if (ret) {
+ dev_err(dev, "Cannot send peak bw request: %d\n", ret);
+ return ret;
+ }
+
+ ret = mtk_dvfsrc_send_request(dev, MTK_DVFSRC_CMD_BW, node->sum_avg);
+ if (ret) {
+ dev_err(dev, "Cannot send bw request: %d\n", ret);
+ return ret;
+ }
+ break;
+ case 2:
+ ret = mtk_dvfsrc_send_request(dev, MTK_DVFSRC_CMD_HRT_BW, node->sum_avg);
+ if (ret) {
+ dev_err(dev, "Cannot send HRT bw request: %d\n", ret);
+ return ret;
+ }
+ break;
+ default:
+ dev_err(src->provider->dev, "Unknown endpoint %u\n", node->ep);
+ return -EINVAL;
+ };
+
+ return 0;
+}
+
+int mtk_emi_icc_probe(struct platform_device *pdev)
+{
+ const struct mtk_icc_desc *desc;
+ struct device *dev = &pdev->dev;
+ struct icc_node *node;
+ struct icc_onecell_data *data;
+ struct icc_provider *provider;
+ struct mtk_icc_node **mnodes;
+ int i, j, ret;
+
+ desc = of_device_get_match_data(dev);
+ if (!desc)
+ return -EINVAL;
+
+ mnodes = desc->nodes;
+
+ provider = devm_kzalloc(dev, sizeof(*provider), GFP_KERNEL);
+ if (!provider)
+ return -ENOMEM;
+
+ data = devm_kzalloc(dev, struct_size(data, nodes, desc->num_nodes), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ provider->dev = pdev->dev.parent;
+ provider->set = mtk_emi_icc_set;
+ provider->aggregate = mtk_emi_icc_aggregate;
+ provider->xlate = of_icc_xlate_onecell;
+ INIT_LIST_HEAD(&provider->nodes);
+ provider->data = data;
+
+ for (i = 0; i < desc->num_nodes; i++) {
+ if (!mnodes[i])
+ continue;
+
+ node = icc_node_create(mnodes[i]->id);
+ if (IS_ERR(node)) {
+ ret = PTR_ERR(node);
+ goto err;
+ }
+
+ node->name = mnodes[i]->name;
+ node->data = mnodes[i];
+ icc_node_add(node, provider);
+
+ for (j = 0; j < mnodes[i]->num_links; j++)
+ icc_link_create(node, mnodes[i]->links[j]);
+
+ data->nodes[i] = node;
+ }
+ data->num_nodes = desc->num_nodes;
+
+ ret = icc_provider_register(provider);
+ if (ret)
+ goto err;
+
+ platform_set_drvdata(pdev, provider);
+
+ return 0;
+err:
+ icc_nodes_remove(provider);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(mtk_emi_icc_probe);
+
+void mtk_emi_icc_remove(struct platform_device *pdev)
+{
+ struct icc_provider *provider = platform_get_drvdata(pdev);
+
+ icc_provider_deregister(provider);
+ icc_nodes_remove(provider);
+}
+EXPORT_SYMBOL_GPL(mtk_emi_icc_remove);
+
+MODULE_AUTHOR("AngeloGioacchino Del Regno <[email protected]>");
+MODULE_AUTHOR("Henry Chen <[email protected]>");
+MODULE_DESCRIPTION("MediaTek External Memory Interface interconnect driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/interconnect/mediatek/icc-emi.h b/drivers/interconnect/mediatek/icc-emi.h
new file mode 100644
index 000000000000..9512a50db6fa
--- /dev/null
+++ b/drivers/interconnect/mediatek/icc-emi.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Copyright (c) 2024 Collabora Ltd.
+ * AngeloGioacchino Del Regno <[email protected]>
+ */
+
+#ifndef __DRIVERS_INTERCONNECT_MEDIATEK_ICC_EMI_H
+#define __DRIVERS_INTERCONNECT_MEDIATEK_ICC_EMI_H
+
+/**
+ * struct mtk_icc_node - Mediatek EMI Interconnect Node
+ * @name: The interconnect node name which is shown in debugfs
+ * @ep: Type of this endpoint
+ * @id: Unique node identifier
+ * @sum_avg: Current sum aggregate value of all average bw requests in kBps
+ * @max_peak: Current max aggregate value of all peak bw requests in kBps
+ * @num_links: The total number of @links
+ * @links: Array of @id linked to this node
+ */
+struct mtk_icc_node {
+ unsigned char *name;
+ int ep;
+ u16 id;
+ u64 sum_avg;
+ u64 max_peak;
+
+ u16 num_links;
+ u16 links[] __counted_by(num_links);
+};
+
+struct mtk_icc_desc {
+ struct mtk_icc_node **nodes;
+ size_t num_nodes;
+};
+
+int mtk_emi_icc_probe(struct platform_device *pdev);
+void mtk_emi_icc_remove(struct platform_device *pdev);
+
+#endif /* __DRIVERS_INTERCONNECT_MEDIATEK_ICC_EMI_H */
diff --git a/drivers/interconnect/mediatek/mt8183.c b/drivers/interconnect/mediatek/mt8183.c
new file mode 100644
index 000000000000..24245085c7a9
--- /dev/null
+++ b/drivers/interconnect/mediatek/mt8183.c
@@ -0,0 +1,143 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Copyright (c) 2024 Collabora Ltd.
+ * AngeloGioacchino Del Regno <[email protected]>
+ */
+
+#include <linux/device.h>
+#include <linux/interconnect.h>
+#include <linux/interconnect-provider.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <dt-bindings/interconnect/mediatek,mt8183.h>
+
+#include "icc-emi.h"
+
+static struct mtk_icc_node ddr_emi = {
+ .name = "ddr-emi",
+ .id = SLAVE_DDR_EMI,
+ .ep = 1,
+};
+
+static struct mtk_icc_node mcusys = {
+ .name = "mcusys",
+ .id = MASTER_MCUSYS,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node gpu = {
+ .name = "gpu",
+ .id = MASTER_MFG,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mmsys = {
+ .name = "mmsys",
+ .id = MASTER_MMSYS,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mm_vpu = {
+ .name = "mm-vpu",
+ .id = MASTER_MM_VPU,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_disp = {
+ .name = "mm-disp",
+ .id = MASTER_MM_DISP,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_vdec = {
+ .name = "mm-vdec",
+ .id = MASTER_MM_VDEC,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_venc = {
+ .name = "mm-venc",
+ .id = MASTER_MM_VENC,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_cam = {
+ .name = "mm-cam",
+ .id = MASTER_MM_CAM,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_img = {
+ .name = "mm-img",
+ .id = MASTER_MM_IMG,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_mdp = {
+ .name = "mm-mdp",
+ .id = MASTER_MM_MDP,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node *mt8183_emi_icc_nodes[] = {
+ [SLAVE_DDR_EMI] = &ddr_emi,
+ [MASTER_MCUSYS] = &mcusys,
+ [MASTER_MFG] = &gpu,
+ [MASTER_MMSYS] = &mmsys,
+ [MASTER_MM_VPU] = &mm_vpu,
+ [MASTER_MM_DISP] = &mm_disp,
+ [MASTER_MM_VDEC] = &mm_vdec,
+ [MASTER_MM_VENC] = &mm_venc,
+ [MASTER_MM_CAM] = &mm_cam,
+ [MASTER_MM_IMG] = &mm_img,
+ [MASTER_MM_MDP] = &mm_mdp
+};
+
+static const struct mtk_icc_desc mt8183_emi_icc = {
+ .nodes = mt8183_emi_icc_nodes,
+ .num_nodes = ARRAY_SIZE(mt8183_emi_icc_nodes),
+};
+
+static const struct of_device_id mtk_mt8183_emi_icc_of_match[] = {
+ { .compatible = "mediatek,mt8183-emi", .data = &mt8183_emi_icc },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, mtk_mt8183_emi_icc_of_match);
+
+static struct platform_driver mtk_emi_icc_mt8183_driver = {
+ .driver = {
+ .name = "emi-icc-mt8183",
+ .of_match_table = mtk_mt8183_emi_icc_of_match,
+ .sync_state = icc_sync_state,
+ },
+ .probe = mtk_emi_icc_probe,
+ .remove_new = mtk_emi_icc_remove,
+
+};
+module_platform_driver(mtk_emi_icc_mt8183_driver);
+
+MODULE_AUTHOR("AngeloGioacchino Del Regno <[email protected]>");
+MODULE_DESCRIPTION("MediaTek MT8183 EMI ICC driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/interconnect/mediatek/mt8195.c b/drivers/interconnect/mediatek/mt8195.c
new file mode 100644
index 000000000000..710e14c5447c
--- /dev/null
+++ b/drivers/interconnect/mediatek/mt8195.c
@@ -0,0 +1,339 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Copyright (c) 2024 Collabora Ltd.
+ * AngeloGioacchino Del Regno <[email protected]>
+ */
+
+#include <linux/device.h>
+#include <linux/interconnect.h>
+#include <linux/interconnect-provider.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <dt-bindings/interconnect/mediatek,mt8195.h>
+
+#include "icc-emi.h"
+
+static struct mtk_icc_node ddr_emi = {
+ .name = "ddr-emi",
+ .id = SLAVE_DDR_EMI,
+ .ep = 1,
+};
+
+static struct mtk_icc_node mcusys = {
+ .name = "mcusys",
+ .id = MASTER_MCUSYS,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node gpu = {
+ .name = "gpu",
+ .id = MASTER_GPUSYS,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mmsys = {
+ .name = "mmsys",
+ .id = MASTER_MMSYS,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mm_vpu = {
+ .name = "mm-vpu",
+ .id = MASTER_MM_VPU,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_disp = {
+ .name = "mm-disp",
+ .id = MASTER_MM_DISP,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_vdec = {
+ .name = "mm-vdec",
+ .id = MASTER_MM_VDEC,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_venc = {
+ .name = "mm-venc",
+ .id = MASTER_MM_VENC,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_cam = {
+ .name = "mm-cam",
+ .id = MASTER_MM_CAM,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_img = {
+ .name = "mm-img",
+ .id = MASTER_MM_IMG,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_mdp = {
+ .name = "mm-mdp",
+ .id = MASTER_MM_MDP,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node vpusys = {
+ .name = "vpusys",
+ .id = MASTER_VPUSYS,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node vpu_port0 = {
+ .name = "vpu-port0",
+ .id = MASTER_VPU_0,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_VPUSYS }
+};
+
+static struct mtk_icc_node vpu_port1 = {
+ .name = "vpu-port1",
+ .id = MASTER_VPU_1,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_VPUSYS }
+};
+
+static struct mtk_icc_node mdlasys = {
+ .name = "mdlasys",
+ .id = MASTER_MDLASYS,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mdla_port0 = {
+ .name = "mdla-port0",
+ .id = MASTER_MDLA_0,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_MDLASYS }
+};
+
+static struct mtk_icc_node ufs = {
+ .name = "ufs",
+ .id = MASTER_UFS,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node pcie0 = {
+ .name = "pcie0",
+ .id = MASTER_PCIE_0,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node pcie1 = {
+ .name = "pcie1",
+ .id = MASTER_PCIE_1,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node usb = {
+ .name = "usb",
+ .id = MASTER_USB,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node wifi = {
+ .name = "wifi",
+ .id = MASTER_WIFI,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node bt = {
+ .name = "bt",
+ .id = MASTER_BT,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node netsys = {
+ .name = "netsys",
+ .id = MASTER_NETSYS,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node dbgif = {
+ .name = "dbgif",
+ .id = MASTER_DBGIF,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node hrt_ddr_emi = {
+ .name = "hrt-ddr-emi",
+ .id = SLAVE_HRT_DDR_EMI,
+ .ep = 2,
+};
+
+static struct mtk_icc_node hrt_mmsys = {
+ .name = "hrt-mmsys",
+ .id = MASTER_HRT_MMSYS,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_HRT_DDR_EMI }
+};
+
+static struct mtk_icc_node hrt_mm_disp = {
+ .name = "hrt-mm-disp",
+ .id = MASTER_HRT_MM_DISP,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_vdec = {
+ .name = "hrt-mm-vdec",
+ .id = MASTER_HRT_MM_VDEC,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_venc = {
+ .name = "hrt-mm-venc",
+ .id = MASTER_HRT_MM_VENC,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_cam = {
+ .name = "hrt-mm-cam",
+ .id = MASTER_HRT_MM_CAM,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_img = {
+ .name = "hrt-mm-img",
+ .id = MASTER_HRT_MM_IMG,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_mdp = {
+ .name = "hrt-mm-mdp",
+ .id = MASTER_HRT_MM_MDP,
+ .ep = 0,
+ .num_links = 1,
+ .links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_dbgif = {
+ .name = "hrt-dbgif",
+ .id = MASTER_HRT_DBGIF,
+ .ep = 0,
+ .num_links = 1,
+ .links = { SLAVE_HRT_DDR_EMI }
+};
+
+static struct mtk_icc_node *mt8195_emi_icc_nodes[] = {
+ [SLAVE_DDR_EMI] = &ddr_emi,
+ [MASTER_MCUSYS] = &mcusys,
+ [MASTER_GPUSYS] = &gpu,
+ [MASTER_MMSYS] = &mmsys,
+ [MASTER_MM_VPU] = &mm_vpu,
+ [MASTER_MM_DISP] = &mm_disp,
+ [MASTER_MM_VDEC] = &mm_vdec,
+ [MASTER_MM_VENC] = &mm_venc,
+ [MASTER_MM_CAM] = &mm_cam,
+ [MASTER_MM_IMG] = &mm_img,
+ [MASTER_MM_MDP] = &mm_mdp,
+ [MASTER_VPUSYS] = &vpusys,
+ [MASTER_VPU_0] = &vpu_port0,
+ [MASTER_VPU_1] = &vpu_port1,
+ [MASTER_MDLASYS] = &mdlasys,
+ [MASTER_MDLA_0] = &mdla_port0,
+ [MASTER_UFS] = &ufs,
+ [MASTER_PCIE_0] = &pcie0,
+ [MASTER_PCIE_1] = &pcie1,
+ [MASTER_USB] = &usb,
+ [MASTER_WIFI] = &wifi,
+ [MASTER_BT] = &bt,
+ [MASTER_NETSYS] = &netsys,
+ [MASTER_DBGIF] = &dbgif,
+ [SLAVE_HRT_DDR_EMI] = &hrt_ddr_emi,
+ [MASTER_HRT_MMSYS] = &hrt_mmsys,
+ [MASTER_HRT_MM_DISP] = &hrt_mm_disp,
+ [MASTER_HRT_MM_VDEC] = &hrt_mm_vdec,
+ [MASTER_HRT_MM_VENC] = &hrt_mm_venc,
+ [MASTER_HRT_MM_CAM] = &hrt_mm_cam,
+ [MASTER_HRT_MM_IMG] = &hrt_mm_img,
+ [MASTER_HRT_MM_MDP] = &hrt_mm_mdp,
+ [MASTER_HRT_DBGIF] = &hrt_dbgif
+};
+
+static struct mtk_icc_desc mt8195_emi_icc = {
+ .nodes = mt8195_emi_icc_nodes,
+ .num_nodes = ARRAY_SIZE(mt8195_emi_icc_nodes),
+};
+
+static const struct of_device_id mtk_mt8195_emi_icc_of_match[] = {
+ { .compatible = "mediatek,mt8195-emi", .data = &mt8195_emi_icc },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, mtk_mt8195_emi_icc_of_match);
+
+static struct platform_driver mtk_emi_icc_mt8195_driver = {
+ .driver = {
+ .name = "emi-icc-mt8195",
+ .of_match_table = mtk_mt8195_emi_icc_of_match,
+ .sync_state = icc_sync_state,
+ },
+ .probe = mtk_emi_icc_probe,
+ .remove_new = mtk_emi_icc_remove,
+
+};
+module_platform_driver(mtk_emi_icc_mt8195_driver);
+
+MODULE_AUTHOR("AngeloGioacchino Del Regno <[email protected]>");
+MODULE_DESCRIPTION("MediaTek MT8195 EMI ICC driver");
+MODULE_LICENSE("GPL");
--
2.44.0
Hi Angelo,
On 24.04.24 12:54, AngeloGioacchino Del Regno wrote:
> 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 <[email protected]>
Thank you for working on this! It looks good to me.
Do we have a plan how to merge all this?
Thanks,
Georgi
> ---
> drivers/interconnect/Kconfig | 1 +
> drivers/interconnect/Makefile | 1 +
> drivers/interconnect/mediatek/Kconfig | 29 ++
> drivers/interconnect/mediatek/Makefile | 5 +
> drivers/interconnect/mediatek/icc-emi.c | 153 +++++++++++
> drivers/interconnect/mediatek/icc-emi.h | 40 +++
> drivers/interconnect/mediatek/mt8183.c | 143 ++++++++++
> drivers/interconnect/mediatek/mt8195.c | 339 ++++++++++++++++++++++++
> 8 files changed, 711 insertions(+)
> create mode 100644 drivers/interconnect/mediatek/Kconfig
> create mode 100644 drivers/interconnect/mediatek/Makefile
> create mode 100644 drivers/interconnect/mediatek/icc-emi.c
> create mode 100644 drivers/interconnect/mediatek/icc-emi.h
> create mode 100644 drivers/interconnect/mediatek/mt8183.c
> create mode 100644 drivers/interconnect/mediatek/mt8195.c