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 venc_cg_regs = { 24 .set_ofs = 0x4, 25 .clr_ofs = 0x8, 26 .sta_ofs = 0x0, 27 }; 28 29 #define GATE_VENC(_id, _name, _parent, _shift) { \ 30 .id = _id, \ 31 .name = _name, \ 32 .parent_name = _parent, \ 33 .regs = &venc_cg_regs, \ 34 .shift = _shift, \ 35 .ops = &mtk_clk_gate_ops_setclr_inv, \ 36 } 37 38 static const struct mtk_gate venc_clks[] = { 39 GATE_VENC(CLK_VENC_SMI_COMMON_CON, "venc_smi", "mm_sel", 0), 40 GATE_VENC(CLK_VENC_VENC, "venc_venc", "venc_sel", 4), 41 GATE_VENC(CLK_VENC_SMI_LARB6, "venc_smi_larb6", "jpgdec_sel", 12), 42 }; 43 44 static int clk_mt2712_venc_probe(struct platform_device *pdev) 45 { 46 struct clk_onecell_data *clk_data; 47 int r; 48 struct device_node *node = pdev->dev.of_node; 49 50 clk_data = mtk_alloc_clk_data(CLK_VENC_NR_CLK); 51 52 mtk_clk_register_gates(node, venc_clks, ARRAY_SIZE(venc_clks), 53 clk_data); 54 55 r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data); 56 57 if (r != 0) 58 pr_err("%s(): could not register clock provider: %d\n", 59 __func__, r); 60 61 return r; 62 } 63 64 static const struct of_device_id of_match_clk_mt2712_venc[] = { 65 { .compatible = "mediatek,mt2712-vencsys", }, 66 {} 67 }; 68 69 static struct platform_driver clk_mt2712_venc_drv = { 70 .probe = clk_mt2712_venc_probe, 71 .driver = { 72 .name = "clk-mt2712-venc", 73 .of_match_table = of_match_clk_mt2712_venc, 74 }, 75 }; 76 77 builtin_platform_driver(clk_mt2712_venc_drv); 78