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 img_cg_regs = { 16 .set_ofs = 0x0004, 17 .clr_ofs = 0x0008, 18 .sta_ofs = 0x0000, 19 }; 20 21 #define GATE_IMG(_id, _name, _parent, _shift) { \ 22 .id = _id, \ 23 .name = _name, \ 24 .parent_name = _parent, \ 25 .regs = &img_cg_regs, \ 26 .shift = _shift, \ 27 .ops = &mtk_clk_gate_ops_setclr, \ 28 } 29 30 static const struct mtk_gate img_clks[] = { 31 GATE_IMG(CLK_IMG_SMI_COMM, "img_smi_comm", "mm_sel", 0), 32 GATE_IMG(CLK_IMG_RESZ, "img_resz", "mm_sel", 1), 33 GATE_IMG(CLK_IMG_JPGDEC_SMI, "img_jpgdec_smi", "mm_sel", 5), 34 GATE_IMG(CLK_IMG_JPGDEC, "img_jpgdec", "mm_sel", 6), 35 GATE_IMG(CLK_IMG_VENC_LT, "img_venc_lt", "mm_sel", 8), 36 GATE_IMG(CLK_IMG_VENC, "img_venc", "mm_sel", 9), 37 }; 38 39 static const struct of_device_id of_match_clk_mt2701_img[] = { 40 { .compatible = "mediatek,mt2701-imgsys", }, 41 {} 42 }; 43 44 static int clk_mt2701_img_probe(struct platform_device *pdev) 45 { 46 struct clk_hw_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_IMG_NR); 51 52 mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks), 53 clk_data); 54 55 r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data); 56 if (r) 57 dev_err(&pdev->dev, 58 "could not register clock provider: %s: %d\n", 59 pdev->name, r); 60 61 return r; 62 } 63 64 static struct platform_driver clk_mt2701_img_drv = { 65 .probe = clk_mt2701_img_probe, 66 .driver = { 67 .name = "clk-mt2701-img", 68 .of_match_table = of_match_clk_mt2701_img, 69 }, 70 }; 71 72 builtin_platform_driver(clk_mt2701_img_drv); 73