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 13 static 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 28 static 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 35 static const struct of_device_id of_match_clk_mt6797_img[] = { 36 { .compatible = "mediatek,mt6797-imgsys", }, 37 {} 38 }; 39 40 static int clk_mt6797_img_probe(struct platform_device *pdev) 41 { 42 struct clk_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_provider(node, of_clk_src_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 60 static 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 68 builtin_platform_driver(clk_mt6797_img_drv); 69