tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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/clk-provider.h>
8#include <linux/platform_device.h>
9#include <dt-bindings/clock/mt6779-clk.h>
10
11#include "clk-mtk.h"
12#include "clk-gate.h"
13
14static const struct mtk_gate_regs img_cg_regs = {
15 .set_ofs = 0x0004,
16 .clr_ofs = 0x0008,
17 .sta_ofs = 0x0000,
18};
19
20#define GATE_IMG(_id, _name, _parent, _shift) \
21 GATE_MTK(_id, _name, _parent, &img_cg_regs, _shift, \
22 &mtk_clk_gate_ops_setclr)
23
24static const struct mtk_gate img_clks[] = {
25 GATE_IMG(CLK_IMG_LARB5, "imgsys_larb5", "img_sel", 0),
26 GATE_IMG(CLK_IMG_LARB6, "imgsys_larb6", "img_sel", 1),
27 GATE_IMG(CLK_IMG_DIP, "imgsys_dip", "img_sel", 2),
28 GATE_IMG(CLK_IMG_MFB, "imgsys_mfb", "img_sel", 6),
29 GATE_IMG(CLK_IMG_WPE_A, "imgsys_wpe_a", "img_sel", 7),
30};
31
32static const struct of_device_id of_match_clk_mt6779_img[] = {
33 { .compatible = "mediatek,mt6779-imgsys", },
34 {}
35};
36
37static int clk_mt6779_img_probe(struct platform_device *pdev)
38{
39 struct clk_onecell_data *clk_data;
40 struct device_node *node = pdev->dev.of_node;
41
42 clk_data = mtk_alloc_clk_data(CLK_IMG_NR_CLK);
43
44 mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks),
45 clk_data);
46
47 return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
48}
49
50static struct platform_driver clk_mt6779_img_drv = {
51 .probe = clk_mt6779_img_probe,
52 .driver = {
53 .name = "clk-mt6779-img",
54 .of_match_table = of_match_clk_mt6779_img,
55 },
56};
57
58builtin_platform_driver(clk_mt6779_img_drv);