1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2014 MediaTek Inc. 4 * Author: Shunli Wang <shunli.wang@mediatek.com> 5 */ 6 7 #include <linux/clk-provider.h> 8 #include <linux/platform_device.h> 9 10 #include "clk-mtk.h" 11 #include "clk-gate.h" 12 13 #include <dt-bindings/clock/mt2701-clk.h> 14 15 static const struct mtk_gate_regs vdec0_cg_regs = { 16 .set_ofs = 0x0000, 17 .clr_ofs = 0x0004, 18 .sta_ofs = 0x0000, 19 }; 20 21 static const struct mtk_gate_regs vdec1_cg_regs = { 22 .set_ofs = 0x0008, 23 .clr_ofs = 0x000c, 24 .sta_ofs = 0x0008, 25 }; 26 27 #define GATE_VDEC0(_id, _name, _parent, _shift) { \ 28 .id = _id, \ 29 .name = _name, \ 30 .parent_name = _parent, \ 31 .regs = &vdec0_cg_regs, \ 32 .shift = _shift, \ 33 .ops = &mtk_clk_gate_ops_setclr_inv, \ 34 } 35 36 #define GATE_VDEC1(_id, _name, _parent, _shift) { \ 37 .id = _id, \ 38 .name = _name, \ 39 .parent_name = _parent, \ 40 .regs = &vdec1_cg_regs, \ 41 .shift = _shift, \ 42 .ops = &mtk_clk_gate_ops_setclr_inv, \ 43 } 44 45 static const struct mtk_gate vdec_clks[] = { 46 GATE_VDEC0(CLK_VDEC_CKGEN, "vdec_cken", "vdec_sel", 0), 47 GATE_VDEC1(CLK_VDEC_LARB, "vdec_larb_cken", "mm_sel", 0), 48 }; 49 50 static const struct of_device_id of_match_clk_mt2701_vdec[] = { 51 { .compatible = "mediatek,mt2701-vdecsys", }, 52 {} 53 }; 54 55 static int clk_mt2701_vdec_probe(struct platform_device *pdev) 56 { 57 struct clk_hw_onecell_data *clk_data; 58 int r; 59 struct device_node *node = pdev->dev.of_node; 60 61 clk_data = mtk_alloc_clk_data(CLK_VDEC_NR); 62 63 mtk_clk_register_gates(node, vdec_clks, ARRAY_SIZE(vdec_clks), 64 clk_data); 65 66 r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data); 67 if (r) 68 dev_err(&pdev->dev, 69 "could not register clock provider: %s: %d\n", 70 pdev->name, r); 71 72 return r; 73 } 74 75 static struct platform_driver clk_mt2701_vdec_drv = { 76 .probe = clk_mt2701_vdec_probe, 77 .driver = { 78 .name = "clk-mt2701-vdec", 79 .of_match_table = of_match_clk_mt2701_vdec, 80 }, 81 }; 82 83 builtin_platform_driver(clk_mt2701_vdec_drv); 84