clk/mediatek/clk-mt6797-img.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /* Copyright (c) 2017 MediaTek Inc.
0003  * Author: Kevin Chen <kevin-cw.chen@mediatek.com>
0004  */
0005
0006 #include <linux/clk-provider.h>
0007 #include <linux/platform_device.h>
0008 #include <dt-bindings/clock/mt6797-clk.h>
0009
0010 #include "clk-mtk.h"
0011 #include "clk-gate.h"
0012
0013 static const struct mtk_gate_regs img_cg_regs = {
0014     .set_ofs = 0x0004,
0015     .clr_ofs = 0x0008,
0016     .sta_ofs = 0x0000,
0017 };
0018
0019 #define GATE_IMG(_id, _name, _parent, _shift) {     \
0020         .id = _id,              \
0021         .name = _name,              \
0022         .parent_name = _parent,         \
0023         .regs = &img_cg_regs,           \
0024         .shift = _shift,            \
0025         .ops = &mtk_clk_gate_ops_setclr,    \
0026     }
0027
0028 static const struct mtk_gate img_clks[] = {
0029     GATE_IMG(CLK_IMG_FDVT, "img_fdvt", "mm_sel", 11),
0030     GATE_IMG(CLK_IMG_DPE, "img_dpe", "mm_sel", 10),
0031     GATE_IMG(CLK_IMG_DIP, "img_dip", "mm_sel", 6),
0032     GATE_IMG(CLK_IMG_LARB6, "img_larb6", "mm_sel", 0),
0033 };
0034
0035 static const struct of_device_id of_match_clk_mt6797_img[] = {
0036     { .compatible = "mediatek,mt6797-imgsys", },
0037     {}
0038 };
0039
0040 static int clk_mt6797_img_probe(struct platform_device *pdev)
0041 {
0042     struct clk_hw_onecell_data *clk_data;
0043     int r;
0044     struct device_node *node = pdev->dev.of_node;
0045
0046     clk_data = mtk_alloc_clk_data(CLK_IMG_NR);
0047
0048     mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks),
0049                    clk_data);
0050
0051     r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
0052     if (r)
0053         dev_err(&pdev->dev,
0054             "could not register clock provider: %s: %d\n",
0055             pdev->name, r);
0056
0057     return r;
0058 }
0059
0060 static struct platform_driver clk_mt6797_img_drv = {
0061     .probe = clk_mt6797_img_probe,
0062     .driver = {
0063         .name = "clk-mt6797-img",
0064         .of_match_table = of_match_clk_mt6797_img,
0065     },
0066 };
0067
0068 builtin_platform_driver(clk_mt6797_img_drv);