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 img_cg_regs = { 24 .set_ofs = 0x0, 25 .clr_ofs = 0x0, 26 .sta_ofs = 0x0, 27 }; 28 29 #define GATE_IMG(_id, _name, _parent, _shift) { \ 30 .id = _id, \ 31 .name = _name, \ 32 .parent_name = _parent, \ 33 .regs = &img_cg_regs, \ 34 .shift = _shift, \ 35 .ops = &mtk_clk_gate_ops_no_setclr, \ 36 } 37 38 static const struct mtk_gate img_clks[] = { 39 GATE_IMG(CLK_IMG_SMI_LARB2, "img_smi_larb2", "mm_sel", 0), 40 GATE_IMG(CLK_IMG_SENINF_SCAM_EN, "img_scam_en", "csi0", 3), 41 GATE_IMG(CLK_IMG_SENINF_CAM_EN, "img_cam_en", "mm_sel", 8), 42 GATE_IMG(CLK_IMG_CAM_SV_EN, "img_cam_sv_en", "mm_sel", 9), 43 GATE_IMG(CLK_IMG_CAM_SV1_EN, "img_cam_sv1_en", "mm_sel", 10), 44 GATE_IMG(CLK_IMG_CAM_SV2_EN, "img_cam_sv2_en", "mm_sel", 11), 45 }; 46 47 static int clk_mt2712_img_probe(struct platform_device *pdev) 48 { 49 struct clk_onecell_data *clk_data; 50 int r; 51 struct device_node *node = pdev->dev.of_node; 52 53 clk_data = mtk_alloc_clk_data(CLK_IMG_NR_CLK); 54 55 mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks), 56 clk_data); 57 58 r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data); 59 60 if (r != 0) 61 pr_err("%s(): could not register clock provider: %d\n", 62 __func__, r); 63 64 return r; 65 } 66 67 static const struct of_device_id of_match_clk_mt2712_img[] = { 68 { .compatible = "mediatek,mt2712-imgsys", }, 69 {} 70 }; 71 72 static struct platform_driver clk_mt2712_img_drv = { 73 .probe = clk_mt2712_img_probe, 74 .driver = { 75 .name = "clk-mt2712-img", 76 .of_match_table = of_match_clk_mt2712_img, 77 }, 78 }; 79 80 builtin_platform_driver(clk_mt2712_img_drv); 81