clk/mediatek/clk-mt6765-img.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Copyright (c) 2018 MediaTek Inc.
0004  * Author: Owen Chen <owen.chen@mediatek.com>
0005  */
0006
0007 #include <linux/clk-provider.h>
0008 #include <linux/platform_device.h>
0009
0010 #include "clk-mtk.h"
0011 #include "clk-gate.h"
0012
0013 #include <dt-bindings/clock/mt6765-clk.h>
0014
0015 static const struct mtk_gate_regs img_cg_regs = {
0016     .set_ofs = 0x4,
0017     .clr_ofs = 0x8,
0018     .sta_ofs = 0x0,
0019 };
0020
0021 #define GATE_IMG(_id, _name, _parent, _shift) {     \
0022         .id = _id,              \
0023         .name = _name,              \
0024         .parent_name = _parent,         \
0025         .regs = &img_cg_regs,           \
0026         .shift = _shift,            \
0027         .ops = &mtk_clk_gate_ops_setclr,    \
0028     }
0029
0030 static const struct mtk_gate img_clks[] = {
0031     GATE_IMG(CLK_IMG_LARB2, "img_larb2", "mm_ck", 0),
0032     GATE_IMG(CLK_IMG_DIP, "img_dip", "mm_ck", 2),
0033     GATE_IMG(CLK_IMG_FDVT, "img_fdvt", "mm_ck", 3),
0034     GATE_IMG(CLK_IMG_DPE, "img_dpe", "mm_ck", 4),
0035     GATE_IMG(CLK_IMG_RSC, "img_rsc", "mm_ck", 5),
0036 };
0037
0038 static int clk_mt6765_img_probe(struct platform_device *pdev)
0039 {
0040     struct clk_hw_onecell_data *clk_data;
0041     int r;
0042     struct device_node *node = pdev->dev.of_node;
0043
0044     clk_data = mtk_alloc_clk_data(CLK_IMG_NR_CLK);
0045
0046     mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks), clk_data);
0047
0048     r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
0049
0050     if (r)
0051         pr_err("%s(): could not register clock provider: %d\n",
0052                __func__, r);
0053
0054     return r;
0055 }
0056
0057 static const struct of_device_id of_match_clk_mt6765_img[] = {
0058     { .compatible = "mediatek,mt6765-imgsys", },
0059     {}
0060 };
0061
0062 static struct platform_driver clk_mt6765_img_drv = {
0063     .probe = clk_mt6765_img_probe,
0064     .driver = {
0065         .name = "clk-mt6765-img",
0066         .of_match_table = of_match_clk_mt6765_img,
0067     },
0068 };
0069
0070 builtin_platform_driver(clk_mt6765_img_drv);