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 #include "mt8365-mmsys.h" 17 18 static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = { 19 .clk_driver = "clk-mt2701-mm", 20 .routes = mmsys_default_routing_table, 21 .num_routes = ARRAY_SIZE(mmsys_default_routing_table), 22 }; 23 24 static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = { 25 .clk_driver = "clk-mt2712-mm", 26 .routes = mmsys_default_routing_table, 27 .num_routes = ARRAY_SIZE(mmsys_default_routing_table), 28 }; 29 30 static const struct mtk_mmsys_driver_data mt6779_mmsys_driver_data = { 31 .clk_driver = "clk-mt6779-mm", 32 }; 33 34 static const struct mtk_mmsys_driver_data mt6797_mmsys_driver_data = { 35 .clk_driver = "clk-mt6797-mm", 36 }; 37 38 static const struct mtk_mmsys_driver_data mt8167_mmsys_driver_data = { 39 .clk_driver = "clk-mt8167-mm", 40 .routes = mt8167_mmsys_routing_table, 41 .num_routes = ARRAY_SIZE(mt8167_mmsys_routing_table), 42 }; 43 44 static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = { 45 .clk_driver = "clk-mt8173-mm", 46 .routes = mmsys_default_routing_table, 47 .num_routes = ARRAY_SIZE(mmsys_default_routing_table), 48 }; 49 50 static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = { 51 .clk_driver = "clk-mt8183-mm", 52 .routes = mmsys_mt8183_routing_table, 53 .num_routes = ARRAY_SIZE(mmsys_mt8183_routing_table), 54 }; 55 56 static const struct mtk_mmsys_driver_data mt8365_mmsys_driver_data = { 57 .clk_driver = "clk-mt8365-mm", 58 .routes = mt8365_mmsys_routing_table, 59 .num_routes = ARRAY_SIZE(mt8365_mmsys_routing_table), 60 }; 61 62 struct mtk_mmsys { 63 void __iomem *regs; 64 const struct mtk_mmsys_driver_data *data; 65 }; 66 67 void mtk_mmsys_ddp_connect(struct device *dev, 68 enum mtk_ddp_comp_id cur, 69 enum mtk_ddp_comp_id next) 70 { 71 struct mtk_mmsys *mmsys = dev_get_drvdata(dev); 72 const struct mtk_mmsys_routes *routes = mmsys->data->routes; 73 u32 reg; 74 int i; 75 76 for (i = 0; i < mmsys->data->num_routes; i++) 77 if (cur == routes[i].from_comp && next == routes[i].to_comp) { 78 reg = readl_relaxed(mmsys->regs + routes[i].addr); 79 reg &= ~routes[i].mask; 80 reg |= routes[i].val; 81 writel_relaxed(reg, mmsys->regs + routes[i].addr); 82 } 83 } 84 EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_connect); 85 86 void mtk_mmsys_ddp_disconnect(struct device *dev, 87 enum mtk_ddp_comp_id cur, 88 enum mtk_ddp_comp_id next) 89 { 90 struct mtk_mmsys *mmsys = dev_get_drvdata(dev); 91 const struct mtk_mmsys_routes *routes = mmsys->data->routes; 92 u32 reg; 93 int i; 94 95 for (i = 0; i < mmsys->data->num_routes; i++) 96 if (cur == routes[i].from_comp && next == routes[i].to_comp) { 97 reg = readl_relaxed(mmsys->regs + routes[i].addr); 98 reg &= ~routes[i].mask; 99 writel_relaxed(reg, mmsys->regs + routes[i].addr); 100 } 101 } 102 EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect); 103 104 static int mtk_mmsys_probe(struct platform_device *pdev) 105 { 106 struct device *dev = &pdev->dev; 107 struct platform_device *clks; 108 struct platform_device *drm; 109 struct mtk_mmsys *mmsys; 110 int ret; 111 112 mmsys = devm_kzalloc(dev, sizeof(*mmsys), GFP_KERNEL); 113 if (!mmsys) 114 return -ENOMEM; 115 116 mmsys->regs = devm_platform_ioremap_resource(pdev, 0); 117 if (IS_ERR(mmsys->regs)) { 118 ret = PTR_ERR(mmsys->regs); 119 dev_err(dev, "Failed to ioremap mmsys registers: %d\n", ret); 120 return ret; 121 } 122 123 mmsys->data = of_device_get_match_data(&pdev->dev); 124 platform_set_drvdata(pdev, mmsys); 125 126 clks = platform_device_register_data(&pdev->dev, mmsys->data->clk_driver, 127 PLATFORM_DEVID_AUTO, NULL, 0); 128 if (IS_ERR(clks)) 129 return PTR_ERR(clks); 130 131 drm = platform_device_register_data(&pdev->dev, "mediatek-drm", 132 PLATFORM_DEVID_AUTO, NULL, 0); 133 if (IS_ERR(drm)) { 134 platform_device_unregister(clks); 135 return PTR_ERR(drm); 136 } 137 138 return 0; 139 } 140 141 static const struct of_device_id of_match_mtk_mmsys[] = { 142 { 143 .compatible = "mediatek,mt2701-mmsys", 144 .data = &mt2701_mmsys_driver_data, 145 }, 146 { 147 .compatible = "mediatek,mt2712-mmsys", 148 .data = &mt2712_mmsys_driver_data, 149 }, 150 { 151 .compatible = "mediatek,mt6779-mmsys", 152 .data = &mt6779_mmsys_driver_data, 153 }, 154 { 155 .compatible = "mediatek,mt6797-mmsys", 156 .data = &mt6797_mmsys_driver_data, 157 }, 158 { 159 .compatible = "mediatek,mt8167-mmsys", 160 .data = &mt8167_mmsys_driver_data, 161 }, 162 { 163 .compatible = "mediatek,mt8173-mmsys", 164 .data = &mt8173_mmsys_driver_data, 165 }, 166 { 167 .compatible = "mediatek,mt8183-mmsys", 168 .data = &mt8183_mmsys_driver_data, 169 }, 170 { 171 .compatible = "mediatek,mt8365-mmsys", 172 .data = &mt8365_mmsys_driver_data, 173 }, 174 { } 175 }; 176 177 static struct platform_driver mtk_mmsys_drv = { 178 .driver = { 179 .name = "mtk-mmsys", 180 .of_match_table = of_match_mtk_mmsys, 181 }, 182 .probe = mtk_mmsys_probe, 183 }; 184 185 builtin_platform_driver(mtk_mmsys_drv); 186