1 /* 2 * Copyright (c) 2017 MediaTek Inc. 3 * Author: Weiyi Lu <weiyi.lu@mediatek.com> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 */ 14 15 #include <linux/clk-provider.h> 16 #include <linux/platform_device.h> 17 18 #include "clk-mtk.h" 19 #include "clk-gate.h" 20 21 #include <dt-bindings/clock/mt2712-clk.h> 22 23 static const struct mtk_gate_regs vdec0_cg_regs = { 24 .set_ofs = 0x0, 25 .clr_ofs = 0x4, 26 .sta_ofs = 0x0, 27 }; 28 29 static const struct mtk_gate_regs vdec1_cg_regs = { 30 .set_ofs = 0x8, 31 .clr_ofs = 0xc, 32 .sta_ofs = 0x8, 33 }; 34 35 #define GATE_VDEC0(_id, _name, _parent, _shift) { \ 36 .id = _id, \ 37 .name = _name, \ 38 .parent_name = _parent, \ 39 .regs = &vdec0_cg_regs, \ 40 .shift = _shift, \ 41 .ops = &mtk_clk_gate_ops_setclr_inv, \ 42 } 43 44 #define GATE_VDEC1(_id, _name, _parent, _shift) { \ 45 .id = _id, \ 46 .name = _name, \ 47 .parent_name = _parent, \ 48 .regs = &vdec1_cg_regs, \ 49 .shift = _shift, \ 50 .ops = &mtk_clk_gate_ops_setclr_inv, \ 51 } 52 53 static const struct mtk_gate vdec_clks[] = { 54 /* VDEC0 */ 55 GATE_VDEC0(CLK_VDEC_CKEN, "vdec_cken", "vdec_sel", 0), 56 /* VDEC1 */ 57 GATE_VDEC1(CLK_VDEC_LARB1_CKEN, "vdec_larb1_cken", "vdec_sel", 0), 58 GATE_VDEC1(CLK_VDEC_IMGRZ_CKEN, "vdec_imgrz_cken", "vdec_sel", 1), 59 }; 60 61 static int clk_mt2712_vdec_probe(struct platform_device *pdev) 62 { 63 struct clk_onecell_data *clk_data; 64 int r; 65 struct device_node *node = pdev->dev.of_node; 66 67 clk_data = mtk_alloc_clk_data(CLK_VDEC_NR_CLK); 68 69 mtk_clk_register_gates(node, vdec_clks, ARRAY_SIZE(vdec_clks), 70 clk_data); 71 72 r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data); 73 74 if (r != 0) 75 pr_err("%s(): could not register clock provider: %d\n", 76 __func__, r); 77 78 return r; 79 } 80 81 static const struct of_device_id of_match_clk_mt2712_vdec[] = { 82 { .compatible = "mediatek,mt2712-vdecsys", }, 83 {} 84 }; 85 86 static struct platform_driver clk_mt2712_vdec_drv = { 87 .probe = clk_mt2712_vdec_probe, 88 .driver = { 89 .name = "clk-mt2712-vdec", 90 .of_match_table = of_match_clk_mt2712_vdec, 91 }, 92 }; 93 94 builtin_platform_driver(clk_mt2712_vdec_drv); 95