Kevin-CW Chen | 96596aa | 2017-04-08 09:20:30 +0800 | [diff] [blame] | 1 | /* Copyright (c) 2017 MediaTek Inc. |
| 2 | * Author: Kevin Chen <kevin-cw.chen@mediatek.com> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/clk-provider.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | #include <dt-bindings/clock/mt6797-clk.h> |
| 17 | |
| 18 | #include "clk-mtk.h" |
| 19 | #include "clk-gate.h" |
| 20 | |
| 21 | static const struct mtk_gate_regs img_cg_regs = { |
| 22 | .set_ofs = 0x0004, |
| 23 | .clr_ofs = 0x0008, |
| 24 | .sta_ofs = 0x0000, |
| 25 | }; |
| 26 | |
| 27 | #define GATE_IMG(_id, _name, _parent, _shift) { \ |
| 28 | .id = _id, \ |
| 29 | .name = _name, \ |
| 30 | .parent_name = _parent, \ |
| 31 | .regs = &img_cg_regs, \ |
| 32 | .shift = _shift, \ |
| 33 | .ops = &mtk_clk_gate_ops_setclr, \ |
| 34 | } |
| 35 | |
| 36 | static const struct mtk_gate img_clks[] = { |
| 37 | GATE_IMG(CLK_IMG_FDVT, "img_fdvt", "mm_sel", 11), |
| 38 | GATE_IMG(CLK_IMG_DPE, "img_dpe", "mm_sel", 10), |
| 39 | GATE_IMG(CLK_IMG_DIP, "img_dip", "mm_sel", 6), |
| 40 | GATE_IMG(CLK_IMG_LARB6, "img_larb6", "mm_sel", 0), |
| 41 | }; |
| 42 | |
| 43 | static const struct of_device_id of_match_clk_mt6797_img[] = { |
| 44 | { .compatible = "mediatek,mt6797-imgsys", }, |
| 45 | {} |
| 46 | }; |
| 47 | |
| 48 | static int clk_mt6797_img_probe(struct platform_device *pdev) |
| 49 | { |
| 50 | struct clk_onecell_data *clk_data; |
| 51 | int r; |
| 52 | struct device_node *node = pdev->dev.of_node; |
| 53 | |
| 54 | clk_data = mtk_alloc_clk_data(CLK_IMG_NR); |
| 55 | |
| 56 | mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks), |
| 57 | clk_data); |
| 58 | |
| 59 | r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data); |
| 60 | if (r) |
| 61 | dev_err(&pdev->dev, |
| 62 | "could not register clock provider: %s: %d\n", |
| 63 | pdev->name, r); |
| 64 | |
| 65 | return r; |
| 66 | } |
| 67 | |
| 68 | static struct platform_driver clk_mt6797_img_drv = { |
| 69 | .probe = clk_mt6797_img_probe, |
| 70 | .driver = { |
| 71 | .name = "clk-mt6797-img", |
| 72 | .of_match_table = of_match_clk_mt6797_img, |
| 73 | }, |
| 74 | }; |
| 75 | |
| 76 | builtin_platform_driver(clk_mt6797_img_drv); |