cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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clk-mt6779-ipe.c (1688B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * Copyright (c) 2019 MediaTek Inc.
      4 * Author: Wendell Lin <wendell.lin@mediatek.com>
      5 */
      6
      7#include <linux/module.h>
      8#include <linux/clk-provider.h>
      9#include <linux/platform_device.h>
     10#include <dt-bindings/clock/mt6779-clk.h>
     11
     12#include "clk-mtk.h"
     13#include "clk-gate.h"
     14
     15static const struct mtk_gate_regs ipe_cg_regs = {
     16	.set_ofs = 0x0004,
     17	.clr_ofs = 0x0008,
     18	.sta_ofs = 0x0000,
     19};
     20
     21#define GATE_IPE(_id, _name, _parent, _shift)			\
     22	GATE_MTK(_id, _name, _parent, &ipe_cg_regs, _shift,	\
     23		&mtk_clk_gate_ops_setclr)
     24
     25static const struct mtk_gate ipe_clks[] = {
     26	GATE_IPE(CLK_IPE_LARB7, "ipe_larb7", "ipe_sel", 0),
     27	GATE_IPE(CLK_IPE_LARB8, "ipe_larb8", "ipe_sel", 1),
     28	GATE_IPE(CLK_IPE_SMI_SUBCOM, "ipe_smi_subcom", "ipe_sel", 2),
     29	GATE_IPE(CLK_IPE_FD, "ipe_fd", "ipe_sel", 3),
     30	GATE_IPE(CLK_IPE_FE, "ipe_fe", "ipe_sel", 4),
     31	GATE_IPE(CLK_IPE_RSC, "ipe_rsc", "ipe_sel", 5),
     32	GATE_IPE(CLK_IPE_DPE, "ipe_dpe", "ipe_sel", 6),
     33};
     34
     35static const struct of_device_id of_match_clk_mt6779_ipe[] = {
     36	{ .compatible = "mediatek,mt6779-ipesys", },
     37	{}
     38};
     39
     40static int clk_mt6779_ipe_probe(struct platform_device *pdev)
     41{
     42	struct clk_hw_onecell_data *clk_data;
     43	struct device_node *node = pdev->dev.of_node;
     44
     45	clk_data = mtk_alloc_clk_data(CLK_IPE_NR_CLK);
     46
     47	mtk_clk_register_gates(node, ipe_clks, ARRAY_SIZE(ipe_clks),
     48			       clk_data);
     49
     50	return of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
     51}
     52
     53static struct platform_driver clk_mt6779_ipe_drv = {
     54	.probe = clk_mt6779_ipe_probe,
     55	.driver = {
     56		.name = "clk-mt6779-ipe",
     57		.of_match_table = of_match_clk_mt6779_ipe,
     58	},
     59};
     60
     61module_platform_driver(clk_mt6779_ipe_drv);
     62MODULE_LICENSE("GPL");