1 // SPDX-License-Identifier: GPL-2.0
3  * MediaTek External Memory Interface (EMI) Interconnect driver
11 #include <linux/interconnect-provider.h>
18 #include "icc-emi.h"
23 	struct mtk_icc_node *in = node->data;  in mtk_emi_icc_aggregate()
28 	in->sum_avg = *agg_avg;  in mtk_emi_icc_aggregate()
29 	in->max_peak = *agg_peak;  in mtk_emi_icc_aggregate()
36 	struct mtk_icc_node *node = dst->data;  in mtk_emi_icc_set()
40 	if (unlikely(!src->provider))  in mtk_emi_icc_set()
41 		return -EINVAL;  in mtk_emi_icc_set()
43 	dev = src->provider->dev;  in mtk_emi_icc_set()
45 	switch (node->ep) {  in mtk_emi_icc_set()
49 		ret = mtk_dvfsrc_send_request(dev, MTK_DVFSRC_CMD_PEAK_BW, node->max_peak);  in mtk_emi_icc_set()
55 		ret = mtk_dvfsrc_send_request(dev, MTK_DVFSRC_CMD_BW, node->sum_avg);  in mtk_emi_icc_set()
62 		ret = mtk_dvfsrc_send_request(dev, MTK_DVFSRC_CMD_HRT_BW, node->sum_avg);  in mtk_emi_icc_set()
69 		dev_err(src->provider->dev, "Unknown endpoint %u\n", node->ep);  in mtk_emi_icc_set()
70 		return -EINVAL;  in mtk_emi_icc_set()
79 	struct device *dev = &pdev->dev;  in mtk_emi_icc_probe()
88 		return -EINVAL;  in mtk_emi_icc_probe()
90 	mnodes = desc->nodes;  in mtk_emi_icc_probe()
94 		return -ENOMEM;  in mtk_emi_icc_probe()
96 	data = devm_kzalloc(dev, struct_size(data, nodes, desc->num_nodes), GFP_KERNEL);  in mtk_emi_icc_probe()
98 		return -ENOMEM;  in mtk_emi_icc_probe()
100 	provider->dev = pdev->dev.parent;  in mtk_emi_icc_probe()
101 	provider->set = mtk_emi_icc_set;  in mtk_emi_icc_probe()
102 	provider->aggregate = mtk_emi_icc_aggregate;  in mtk_emi_icc_probe()
103 	provider->xlate = of_icc_xlate_onecell;  in mtk_emi_icc_probe()
104 	INIT_LIST_HEAD(&provider->nodes);  in mtk_emi_icc_probe()
105 	provider->data = data;  in mtk_emi_icc_probe()
107 	for (i = 0; i < desc->num_nodes; i++) {  in mtk_emi_icc_probe()
111 		node = icc_node_create(mnodes[i]->id);  in mtk_emi_icc_probe()
117 		node->name = mnodes[i]->name;  in mtk_emi_icc_probe()
118 		node->data = mnodes[i];  in mtk_emi_icc_probe()
121 		for (j = 0; j < mnodes[i]->num_links; j++)  in mtk_emi_icc_probe()
122 			icc_link_create(node, mnodes[i]->links[j]);  in mtk_emi_icc_probe()
124 		data->nodes[i] = node;  in mtk_emi_icc_probe()
126 	data->num_nodes = desc->num_nodes;  in mtk_emi_icc_probe()
152 MODULE_DESCRIPTION("MediaTek External Memory Interface interconnect driver");