1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2014 MediaTek Inc. 4 * Author: James Liao <jamesjj.liao@mediatek.com> 5 */ 6 7 #include <linux/device.h> 8 #include <linux/io.h> 9 #include <linux/of_device.h> 10 #include <linux/platform_device.h> 11 #include <linux/soc/mediatek/mtk-mmsys.h> 12 13 #include "mtk-mmsys.h" 14 #include "mt8167-mmsys.h" 15 #include "mt8183-mmsys.h" 16 17 static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = { 18 .clk_driver = "clk-mt2701-mm", 19 .routes = mmsys_default_routing_table, 20 .num_routes = ARRAY_SIZE(mmsys_default_routing_table), 21 }; 22 23 static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = { 24 .clk_driver = "clk-mt2712-mm", 25 .routes = mmsys_default_routing_table, 26 .num_routes = ARRAY_SIZE(mmsys_default_routing_table), 27 }; 28 29 static const struct mtk_mmsys_driver_data mt6779_mmsys_driver_data = { 30 .clk_driver = "clk-mt6779-mm", 31 }; 32 33 static const struct mtk_mmsys_driver_data mt6797_mmsys_driver_data = { 34 .clk_driver = "clk-mt6797-mm", 35 }; 36 37 static const struct mtk_mmsys_driver_data mt8167_mmsys_driver_data = { 38 .clk_driver = "clk-mt8167-mm", 39 .routes = mt8167_mmsys_routing_table, 40 .num_routes = ARRAY_SIZE(mt8167_mmsys_routing_table), 41 }; 42 43 static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = { 44 .clk_driver = "clk-mt8173-mm", 45 .routes = mmsys_default_routing_table, 46 .num_routes = ARRAY_SIZE(mmsys_default_routing_table), 47 }; 48 49 static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = { 50 .clk_driver = "clk-mt8183-mm", 51 .routes = mmsys_mt8183_routing_table, 52 .num_routes = ARRAY_SIZE(mmsys_mt8183_routing_table), 53 }; 54 55 struct mtk_mmsys { 56 void __iomem *regs; 57 const struct mtk_mmsys_driver_data *data; 58 }; 59 60 void mtk_mmsys_ddp_connect(struct device *dev, 61 enum mtk_ddp_comp_id cur, 62 enum mtk_ddp_comp_id next) 63 { 64 struct mtk_mmsys *mmsys = dev_get_drvdata(dev); 65 const struct mtk_mmsys_routes *routes = mmsys->data->routes; 66 u32 reg; 67 int i; 68 69 for (i = 0; i < mmsys->data->num_routes; i++) 70 if (cur == routes[i].from_comp && next == routes[i].to_comp) { 71 reg = readl_relaxed(mmsys->regs + routes[i].addr) | routes[i].val; 72 writel_relaxed(reg, mmsys->regs + routes[i].addr); 73 } 74 } 75 EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_connect); 76 77 void mtk_mmsys_ddp_disconnect(struct device *dev, 78 enum mtk_ddp_comp_id cur, 79 enum mtk_ddp_comp_id next) 80 { 81 struct mtk_mmsys *mmsys = dev_get_drvdata(dev); 82 const struct mtk_mmsys_routes *routes = mmsys->data->routes; 83 u32 reg; 84 int i; 85 86 for (i = 0; i < mmsys->data->num_routes; i++) 87 if (cur == routes[i].from_comp && next == routes[i].to_comp) { 88 reg = readl_relaxed(mmsys->regs + routes[i].addr) & ~routes[i].val; 89 writel_relaxed(reg, mmsys->regs + routes[i].addr); 90 } 91 } 92 EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect); 93 94 static int mtk_mmsys_probe(struct platform_device *pdev) 95 { 96 struct device *dev = &pdev->dev; 97 struct platform_device *clks; 98 struct platform_device *drm; 99 struct mtk_mmsys *mmsys; 100 int ret; 101 102 mmsys = devm_kzalloc(dev, sizeof(*mmsys), GFP_KERNEL); 103 if (!mmsys) 104 return -ENOMEM; 105 106 mmsys->regs = devm_platform_ioremap_resource(pdev, 0); 107 if (IS_ERR(mmsys->regs)) { 108 ret = PTR_ERR(mmsys->regs); 109 dev_err(dev, "Failed to ioremap mmsys registers: %d\n", ret); 110 return ret; 111 } 112 113 mmsys->data = of_device_get_match_data(&pdev->dev); 114 platform_set_drvdata(pdev, mmsys); 115 116 clks = platform_device_register_data(&pdev->dev, mmsys->data->clk_driver, 117 PLATFORM_DEVID_AUTO, NULL, 0); 118 if (IS_ERR(clks)) 119 return PTR_ERR(clks); 120 121 drm = platform_device_register_data(&pdev->dev, "mediatek-drm", 122 PLATFORM_DEVID_AUTO, NULL, 0); 123 if (IS_ERR(drm)) { 124 platform_device_unregister(clks); 125 return PTR_ERR(drm); 126 } 127 128 return 0; 129 } 130 131 static const struct of_device_id of_match_mtk_mmsys[] = { 132 { 133 .compatible = "mediatek,mt2701-mmsys", 134 .data = &mt2701_mmsys_driver_data, 135 }, 136 { 137 .compatible = "mediatek,mt2712-mmsys", 138 .data = &mt2712_mmsys_driver_data, 139 }, 140 { 141 .compatible = "mediatek,mt6779-mmsys", 142 .data = &mt6779_mmsys_driver_data, 143 }, 144 { 145 .compatible = "mediatek,mt6797-mmsys", 146 .data = &mt6797_mmsys_driver_data, 147 }, 148 { 149 .compatible = "mediatek,mt8167-mmsys", 150 .data = &mt8167_mmsys_driver_data, 151 }, 152 { 153 .compatible = "mediatek,mt8173-mmsys", 154 .data = &mt8173_mmsys_driver_data, 155 }, 156 { 157 .compatible = "mediatek,mt8183-mmsys", 158 .data = &mt8183_mmsys_driver_data, 159 }, 160 { } 161 }; 162 163 static struct platform_driver mtk_mmsys_drv = { 164 .driver = { 165 .name = "mtk-mmsys", 166 .of_match_table = of_match_mtk_mmsys, 167 }, 168 .probe = mtk_mmsys_probe, 169 }; 170 171 builtin_platform_driver(mtk_mmsys_drv); 172