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-mt6797-img.c (1673B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/* Copyright (c) 2017 MediaTek Inc.
      3 * Author: Kevin Chen <kevin-cw.chen@mediatek.com>
      4 */
      5
      6#include <linux/clk-provider.h>
      7#include <linux/platform_device.h>
      8#include <dt-bindings/clock/mt6797-clk.h>
      9
     10#include "clk-mtk.h"
     11#include "clk-gate.h"
     12
     13static const struct mtk_gate_regs img_cg_regs = {
     14	.set_ofs = 0x0004,
     15	.clr_ofs = 0x0008,
     16	.sta_ofs = 0x0000,
     17};
     18
     19#define GATE_IMG(_id, _name, _parent, _shift) {		\
     20		.id = _id,				\
     21		.name = _name,				\
     22		.parent_name = _parent,			\
     23		.regs = &img_cg_regs,			\
     24		.shift = _shift,			\
     25		.ops = &mtk_clk_gate_ops_setclr,	\
     26	}
     27
     28static const struct mtk_gate img_clks[] = {
     29	GATE_IMG(CLK_IMG_FDVT, "img_fdvt", "mm_sel", 11),
     30	GATE_IMG(CLK_IMG_DPE, "img_dpe", "mm_sel", 10),
     31	GATE_IMG(CLK_IMG_DIP, "img_dip", "mm_sel", 6),
     32	GATE_IMG(CLK_IMG_LARB6, "img_larb6", "mm_sel", 0),
     33};
     34
     35static const struct of_device_id of_match_clk_mt6797_img[] = {
     36	{ .compatible = "mediatek,mt6797-imgsys", },
     37	{}
     38};
     39
     40static int clk_mt6797_img_probe(struct platform_device *pdev)
     41{
     42	struct clk_hw_onecell_data *clk_data;
     43	int r;
     44	struct device_node *node = pdev->dev.of_node;
     45
     46	clk_data = mtk_alloc_clk_data(CLK_IMG_NR);
     47
     48	mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks),
     49			       clk_data);
     50
     51	r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
     52	if (r)
     53		dev_err(&pdev->dev,
     54			"could not register clock provider: %s: %d\n",
     55			pdev->name, r);
     56
     57	return r;
     58}
     59
     60static struct platform_driver clk_mt6797_img_drv = {
     61	.probe = clk_mt6797_img_probe,
     62	.driver = {
     63		.name = "clk-mt6797-img",
     64		.of_match_table = of_match_clk_mt6797_img,
     65	},
     66};
     67
     68builtin_platform_driver(clk_mt6797_img_drv);