1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2017 MediaTek Inc. 4 * Author: Kevin Chen <kevin-cw.chen@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/mt6797-clk.h> 14 15 static const struct mtk_gate_regs venc_cg_regs = { 16 .set_ofs = 0x0004, 17 .clr_ofs = 0x0008, 18 .sta_ofs = 0x0000, 19 }; 20 21 #define GATE_VENC(_id, _name, _parent, _shift) { \ 22 .id = _id, \ 23 .name = _name, \ 24 .parent_name = _parent, \ 25 .regs = &venc_cg_regs, \ 26 .shift = _shift, \ 27 .ops = &mtk_clk_gate_ops_setclr_inv, \ 28 } 29 30 static const struct mtk_gate venc_clks[] = { 31 GATE_VENC(CLK_VENC_0, "venc_0", "mm_sel", 0), 32 GATE_VENC(CLK_VENC_1, "venc_1", "venc_sel", 4), 33 GATE_VENC(CLK_VENC_2, "venc_2", "venc_sel", 8), 34 GATE_VENC(CLK_VENC_3, "venc_3", "venc_sel", 12), 35 }; 36 37 static const struct of_device_id of_match_clk_mt6797_venc[] = { 38 { .compatible = "mediatek,mt6797-vencsys", }, 39 {} 40 }; 41 42 static int clk_mt6797_venc_probe(struct platform_device *pdev) 43 { 44 struct clk_onecell_data *clk_data; 45 int r; 46 struct device_node *node = pdev->dev.of_node; 47 48 clk_data = mtk_alloc_clk_data(CLK_VENC_NR); 49 50 mtk_clk_register_gates(node, venc_clks, ARRAY_SIZE(venc_clks), 51 clk_data); 52 53 r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data); 54 if (r) 55 dev_err(&pdev->dev, 56 "could not register clock provider: %s: %d\n", 57 pdev->name, r); 58 59 return r; 60 } 61 62 static struct platform_driver clk_mt6797_venc_drv = { 63 .probe = clk_mt6797_venc_probe, 64 .driver = { 65 .name = "clk-mt6797-venc", 66 .of_match_table = of_match_clk_mt6797_venc, 67 }, 68 }; 69 70 builtin_platform_driver(clk_mt6797_venc_drv); 71