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/delay.h> 8 #include <linux/device.h> 9 #include <linux/io.h> 10 #include <linux/module.h> 11 #include <linux/of.h> 12 #include <linux/platform_device.h> 13 #include <linux/reset-controller.h> 14 #include <linux/soc/mediatek/mtk-mmsys.h> 15 16 #include "mtk-mmsys.h" 17 #include "mt8167-mmsys.h" 18 #include "mt8173-mmsys.h" 19 #include "mt8183-mmsys.h" 20 #include "mt8186-mmsys.h" 21 #include "mt8188-mmsys.h" 22 #include "mt8192-mmsys.h" 23 #include "mt8195-mmsys.h" 24 #include "mt8365-mmsys.h" 25 26 #define MMSYS_SW_RESET_PER_REG 32 27 28 static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = { 29 .clk_driver = "clk-mt2701-mm", 30 .routes = mmsys_default_routing_table, 31 .num_routes = ARRAY_SIZE(mmsys_default_routing_table), 32 }; 33 34 static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = { 35 .clk_driver = "clk-mt2712-mm", 36 .routes = mmsys_default_routing_table, 37 .num_routes = ARRAY_SIZE(mmsys_default_routing_table), 38 }; 39 40 static const struct mtk_mmsys_driver_data mt6779_mmsys_driver_data = { 41 .clk_driver = "clk-mt6779-mm", 42 }; 43 44 static const struct mtk_mmsys_driver_data mt6795_mmsys_driver_data = { 45 .clk_driver = "clk-mt6795-mm", 46 .routes = mt8173_mmsys_routing_table, 47 .num_routes = ARRAY_SIZE(mt8173_mmsys_routing_table), 48 .sw0_rst_offset = MT8183_MMSYS_SW0_RST_B, 49 .num_resets = 64, 50 }; 51 52 static const struct mtk_mmsys_driver_data mt6797_mmsys_driver_data = { 53 .clk_driver = "clk-mt6797-mm", 54 }; 55 56 static const struct mtk_mmsys_driver_data mt8167_mmsys_driver_data = { 57 .clk_driver = "clk-mt8167-mm", 58 .routes = mt8167_mmsys_routing_table, 59 .num_routes = ARRAY_SIZE(mt8167_mmsys_routing_table), 60 }; 61 62 static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = { 63 .clk_driver = "clk-mt8173-mm", 64 .routes = mt8173_mmsys_routing_table, 65 .num_routes = ARRAY_SIZE(mt8173_mmsys_routing_table), 66 .sw0_rst_offset = MT8183_MMSYS_SW0_RST_B, 67 .num_resets = 64, 68 }; 69 70 static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = { 71 .clk_driver = "clk-mt8183-mm", 72 .routes = mmsys_mt8183_routing_table, 73 .num_routes = ARRAY_SIZE(mmsys_mt8183_routing_table), 74 .sw0_rst_offset = MT8183_MMSYS_SW0_RST_B, 75 .num_resets = 32, 76 }; 77 78 static const struct mtk_mmsys_driver_data mt8186_mmsys_driver_data = { 79 .clk_driver = "clk-mt8186-mm", 80 .routes = mmsys_mt8186_routing_table, 81 .num_routes = ARRAY_SIZE(mmsys_mt8186_routing_table), 82 .sw0_rst_offset = MT8186_MMSYS_SW0_RST_B, 83 .num_resets = 32, 84 }; 85 86 static const struct mtk_mmsys_driver_data mt8188_vdosys0_driver_data = { 87 .clk_driver = "clk-mt8188-vdo0", 88 .routes = mmsys_mt8188_routing_table, 89 .num_routes = ARRAY_SIZE(mmsys_mt8188_routing_table), 90 }; 91 92 static const struct mtk_mmsys_driver_data mt8192_mmsys_driver_data = { 93 .clk_driver = "clk-mt8192-mm", 94 .routes = mmsys_mt8192_routing_table, 95 .num_routes = ARRAY_SIZE(mmsys_mt8192_routing_table), 96 .sw0_rst_offset = MT8186_MMSYS_SW0_RST_B, 97 .num_resets = 32, 98 }; 99 100 static const struct mtk_mmsys_driver_data mt8195_vdosys0_driver_data = { 101 .clk_driver = "clk-mt8195-vdo0", 102 .routes = mmsys_mt8195_routing_table, 103 .num_routes = ARRAY_SIZE(mmsys_mt8195_routing_table), 104 }; 105 106 static const struct mtk_mmsys_driver_data mt8195_vdosys1_driver_data = { 107 .clk_driver = "clk-mt8195-vdo1", 108 .routes = mmsys_mt8195_vdo1_routing_table, 109 .num_routes = ARRAY_SIZE(mmsys_mt8195_vdo1_routing_table), 110 .sw0_rst_offset = MT8195_VDO1_SW0_RST_B, 111 .num_resets = 64, 112 }; 113 114 static const struct mtk_mmsys_driver_data mt8195_vppsys0_driver_data = { 115 .clk_driver = "clk-mt8195-vpp0", 116 .is_vppsys = true, 117 }; 118 119 static const struct mtk_mmsys_driver_data mt8195_vppsys1_driver_data = { 120 .clk_driver = "clk-mt8195-vpp1", 121 .is_vppsys = true, 122 }; 123 124 static const struct mtk_mmsys_driver_data mt8365_mmsys_driver_data = { 125 .clk_driver = "clk-mt8365-mm", 126 .routes = mt8365_mmsys_routing_table, 127 .num_routes = ARRAY_SIZE(mt8365_mmsys_routing_table), 128 }; 129 130 struct mtk_mmsys { 131 void __iomem *regs; 132 const struct mtk_mmsys_driver_data *data; 133 struct platform_device *clks_pdev; 134 struct platform_device *drm_pdev; 135 spinlock_t lock; /* protects mmsys_sw_rst_b reg */ 136 struct reset_controller_dev rcdev; 137 struct cmdq_client_reg cmdq_base; 138 }; 139 140 static void mtk_mmsys_update_bits(struct mtk_mmsys *mmsys, u32 offset, u32 mask, u32 val, 141 struct cmdq_pkt *cmdq_pkt) 142 { 143 int ret; 144 u32 tmp; 145 146 if (mmsys->cmdq_base.size && cmdq_pkt) { 147 ret = cmdq_pkt_write_mask(cmdq_pkt, mmsys->cmdq_base.subsys, 148 mmsys->cmdq_base.offset + offset, val, 149 mask); 150 if (ret) 151 pr_debug("CMDQ unavailable: using CPU write\n"); 152 else 153 return; 154 } 155 tmp = readl_relaxed(mmsys->regs + offset); 156 tmp = (tmp & ~mask) | (val & mask); 157 writel_relaxed(tmp, mmsys->regs + offset); 158 } 159 160 void mtk_mmsys_ddp_connect(struct device *dev, 161 enum mtk_ddp_comp_id cur, 162 enum mtk_ddp_comp_id next) 163 { 164 struct mtk_mmsys *mmsys = dev_get_drvdata(dev); 165 const struct mtk_mmsys_routes *routes = mmsys->data->routes; 166 int i; 167 168 for (i = 0; i < mmsys->data->num_routes; i++) 169 if (cur == routes[i].from_comp && next == routes[i].to_comp) 170 mtk_mmsys_update_bits(mmsys, routes[i].addr, routes[i].mask, 171 routes[i].val, NULL); 172 } 173 EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_connect); 174 175 void mtk_mmsys_ddp_disconnect(struct device *dev, 176 enum mtk_ddp_comp_id cur, 177 enum mtk_ddp_comp_id next) 178 { 179 struct mtk_mmsys *mmsys = dev_get_drvdata(dev); 180 const struct mtk_mmsys_routes *routes = mmsys->data->routes; 181 int i; 182 183 for (i = 0; i < mmsys->data->num_routes; i++) 184 if (cur == routes[i].from_comp && next == routes[i].to_comp) 185 mtk_mmsys_update_bits(mmsys, routes[i].addr, routes[i].mask, 0, NULL); 186 } 187 EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect); 188 189 void mtk_mmsys_merge_async_config(struct device *dev, int idx, int width, int height, 190 struct cmdq_pkt *cmdq_pkt) 191 { 192 mtk_mmsys_update_bits(dev_get_drvdata(dev), MT8195_VDO1_MERGE0_ASYNC_CFG_WD + 0x10 * idx, 193 ~0, height << 16 | width, cmdq_pkt); 194 } 195 EXPORT_SYMBOL_GPL(mtk_mmsys_merge_async_config); 196 197 void mtk_mmsys_hdr_config(struct device *dev, int be_width, int be_height, 198 struct cmdq_pkt *cmdq_pkt) 199 { 200 mtk_mmsys_update_bits(dev_get_drvdata(dev), MT8195_VDO1_HDRBE_ASYNC_CFG_WD, ~0, 201 be_height << 16 | be_width, cmdq_pkt); 202 } 203 EXPORT_SYMBOL_GPL(mtk_mmsys_hdr_config); 204 205 void mtk_mmsys_mixer_in_config(struct device *dev, int idx, bool alpha_sel, u16 alpha, 206 u8 mode, u32 biwidth, struct cmdq_pkt *cmdq_pkt) 207 { 208 struct mtk_mmsys *mmsys = dev_get_drvdata(dev); 209 210 mtk_mmsys_update_bits(mmsys, MT8195_VDO1_MIXER_IN1_ALPHA + (idx - 1) * 4, ~0, 211 alpha << 16 | alpha, cmdq_pkt); 212 mtk_mmsys_update_bits(mmsys, MT8195_VDO1_HDR_TOP_CFG, BIT(19 + idx), 213 alpha_sel << (19 + idx), cmdq_pkt); 214 mtk_mmsys_update_bits(mmsys, MT8195_VDO1_MIXER_IN1_PAD + (idx - 1) * 4, 215 GENMASK(31, 16) | GENMASK(1, 0), biwidth << 16 | mode, cmdq_pkt); 216 } 217 EXPORT_SYMBOL_GPL(mtk_mmsys_mixer_in_config); 218 219 void mtk_mmsys_mixer_in_channel_swap(struct device *dev, int idx, bool channel_swap, 220 struct cmdq_pkt *cmdq_pkt) 221 { 222 mtk_mmsys_update_bits(dev_get_drvdata(dev), MT8195_VDO1_MIXER_IN1_PAD + (idx - 1) * 4, 223 BIT(4), channel_swap << 4, cmdq_pkt); 224 } 225 EXPORT_SYMBOL_GPL(mtk_mmsys_mixer_in_channel_swap); 226 227 void mtk_mmsys_ddp_dpi_fmt_config(struct device *dev, u32 val) 228 { 229 struct mtk_mmsys *mmsys = dev_get_drvdata(dev); 230 231 switch (val) { 232 case MTK_DPI_RGB888_SDR_CON: 233 mtk_mmsys_update_bits(mmsys, MT8186_MMSYS_DPI_OUTPUT_FORMAT, 234 MT8186_DPI_FORMAT_MASK, MT8186_DPI_RGB888_SDR_CON, NULL); 235 break; 236 case MTK_DPI_RGB565_SDR_CON: 237 mtk_mmsys_update_bits(mmsys, MT8186_MMSYS_DPI_OUTPUT_FORMAT, 238 MT8186_DPI_FORMAT_MASK, MT8186_DPI_RGB565_SDR_CON, NULL); 239 break; 240 case MTK_DPI_RGB565_DDR_CON: 241 mtk_mmsys_update_bits(mmsys, MT8186_MMSYS_DPI_OUTPUT_FORMAT, 242 MT8186_DPI_FORMAT_MASK, MT8186_DPI_RGB565_DDR_CON, NULL); 243 break; 244 case MTK_DPI_RGB888_DDR_CON: 245 default: 246 mtk_mmsys_update_bits(mmsys, MT8186_MMSYS_DPI_OUTPUT_FORMAT, 247 MT8186_DPI_FORMAT_MASK, MT8186_DPI_RGB888_DDR_CON, NULL); 248 break; 249 } 250 } 251 EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_dpi_fmt_config); 252 253 void mtk_mmsys_vpp_rsz_merge_config(struct device *dev, u32 id, bool enable, 254 struct cmdq_pkt *cmdq_pkt) 255 { 256 u32 reg; 257 258 switch (id) { 259 case 2: 260 reg = MT8195_SVPP2_BUF_BF_RSZ_SWITCH; 261 break; 262 case 3: 263 reg = MT8195_SVPP3_BUF_BF_RSZ_SWITCH; 264 break; 265 default: 266 dev_err(dev, "Invalid id %d\n", id); 267 return; 268 } 269 270 mtk_mmsys_update_bits(dev_get_drvdata(dev), reg, ~0, enable, cmdq_pkt); 271 } 272 EXPORT_SYMBOL_GPL(mtk_mmsys_vpp_rsz_merge_config); 273 274 void mtk_mmsys_vpp_rsz_dcm_config(struct device *dev, bool enable, 275 struct cmdq_pkt *cmdq_pkt) 276 { 277 u32 client; 278 279 client = MT8195_SVPP1_MDP_RSZ; 280 mtk_mmsys_update_bits(dev_get_drvdata(dev), 281 MT8195_VPP1_HW_DCM_1ST_DIS0, client, 282 ((enable) ? client : 0), cmdq_pkt); 283 mtk_mmsys_update_bits(dev_get_drvdata(dev), 284 MT8195_VPP1_HW_DCM_2ND_DIS0, client, 285 ((enable) ? client : 0), cmdq_pkt); 286 287 client = MT8195_SVPP2_MDP_RSZ | MT8195_SVPP3_MDP_RSZ; 288 mtk_mmsys_update_bits(dev_get_drvdata(dev), 289 MT8195_VPP1_HW_DCM_1ST_DIS1, client, 290 ((enable) ? client : 0), cmdq_pkt); 291 mtk_mmsys_update_bits(dev_get_drvdata(dev), 292 MT8195_VPP1_HW_DCM_2ND_DIS1, client, 293 ((enable) ? client : 0), cmdq_pkt); 294 } 295 EXPORT_SYMBOL_GPL(mtk_mmsys_vpp_rsz_dcm_config); 296 297 static int mtk_mmsys_reset_update(struct reset_controller_dev *rcdev, unsigned long id, 298 bool assert) 299 { 300 struct mtk_mmsys *mmsys = container_of(rcdev, struct mtk_mmsys, rcdev); 301 unsigned long flags; 302 u32 offset; 303 u32 reg; 304 305 offset = (id / MMSYS_SW_RESET_PER_REG) * sizeof(u32); 306 id = id % MMSYS_SW_RESET_PER_REG; 307 reg = mmsys->data->sw0_rst_offset + offset; 308 309 spin_lock_irqsave(&mmsys->lock, flags); 310 311 if (assert) 312 mtk_mmsys_update_bits(mmsys, reg, BIT(id), 0, NULL); 313 else 314 mtk_mmsys_update_bits(mmsys, reg, BIT(id), BIT(id), NULL); 315 316 spin_unlock_irqrestore(&mmsys->lock, flags); 317 318 return 0; 319 } 320 321 static int mtk_mmsys_reset_assert(struct reset_controller_dev *rcdev, unsigned long id) 322 { 323 return mtk_mmsys_reset_update(rcdev, id, true); 324 } 325 326 static int mtk_mmsys_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id) 327 { 328 return mtk_mmsys_reset_update(rcdev, id, false); 329 } 330 331 static int mtk_mmsys_reset(struct reset_controller_dev *rcdev, unsigned long id) 332 { 333 int ret; 334 335 ret = mtk_mmsys_reset_assert(rcdev, id); 336 if (ret) 337 return ret; 338 339 usleep_range(1000, 1100); 340 341 return mtk_mmsys_reset_deassert(rcdev, id); 342 } 343 344 static const struct reset_control_ops mtk_mmsys_reset_ops = { 345 .assert = mtk_mmsys_reset_assert, 346 .deassert = mtk_mmsys_reset_deassert, 347 .reset = mtk_mmsys_reset, 348 }; 349 350 static int mtk_mmsys_probe(struct platform_device *pdev) 351 { 352 struct device *dev = &pdev->dev; 353 struct platform_device *clks; 354 struct platform_device *drm; 355 struct mtk_mmsys *mmsys; 356 int ret; 357 358 mmsys = devm_kzalloc(dev, sizeof(*mmsys), GFP_KERNEL); 359 if (!mmsys) 360 return -ENOMEM; 361 362 mmsys->regs = devm_platform_ioremap_resource(pdev, 0); 363 if (IS_ERR(mmsys->regs)) { 364 ret = PTR_ERR(mmsys->regs); 365 dev_err(dev, "Failed to ioremap mmsys registers: %d\n", ret); 366 return ret; 367 } 368 369 mmsys->data = of_device_get_match_data(&pdev->dev); 370 371 if (mmsys->data->num_resets > 0) { 372 spin_lock_init(&mmsys->lock); 373 374 mmsys->rcdev.owner = THIS_MODULE; 375 mmsys->rcdev.nr_resets = mmsys->data->num_resets; 376 mmsys->rcdev.ops = &mtk_mmsys_reset_ops; 377 mmsys->rcdev.of_node = pdev->dev.of_node; 378 ret = devm_reset_controller_register(&pdev->dev, &mmsys->rcdev); 379 if (ret) { 380 dev_err(&pdev->dev, "Couldn't register mmsys reset controller: %d\n", ret); 381 return ret; 382 } 383 } 384 385 /* CMDQ is optional */ 386 ret = cmdq_dev_get_client_reg(dev, &mmsys->cmdq_base, 0); 387 if (ret) 388 dev_dbg(dev, "No mediatek,gce-client-reg!\n"); 389 390 platform_set_drvdata(pdev, mmsys); 391 392 clks = platform_device_register_data(&pdev->dev, mmsys->data->clk_driver, 393 PLATFORM_DEVID_AUTO, NULL, 0); 394 if (IS_ERR(clks)) 395 return PTR_ERR(clks); 396 mmsys->clks_pdev = clks; 397 398 if (mmsys->data->is_vppsys) 399 goto out_probe_done; 400 401 drm = platform_device_register_data(&pdev->dev, "mediatek-drm", 402 PLATFORM_DEVID_AUTO, NULL, 0); 403 if (IS_ERR(drm)) { 404 platform_device_unregister(clks); 405 return PTR_ERR(drm); 406 } 407 mmsys->drm_pdev = drm; 408 409 out_probe_done: 410 return 0; 411 } 412 413 static int mtk_mmsys_remove(struct platform_device *pdev) 414 { 415 struct mtk_mmsys *mmsys = platform_get_drvdata(pdev); 416 417 platform_device_unregister(mmsys->drm_pdev); 418 platform_device_unregister(mmsys->clks_pdev); 419 420 return 0; 421 } 422 423 static const struct of_device_id of_match_mtk_mmsys[] = { 424 { .compatible = "mediatek,mt2701-mmsys", .data = &mt2701_mmsys_driver_data }, 425 { .compatible = "mediatek,mt2712-mmsys", .data = &mt2712_mmsys_driver_data }, 426 { .compatible = "mediatek,mt6779-mmsys", .data = &mt6779_mmsys_driver_data }, 427 { .compatible = "mediatek,mt6795-mmsys", .data = &mt6795_mmsys_driver_data }, 428 { .compatible = "mediatek,mt6797-mmsys", .data = &mt6797_mmsys_driver_data }, 429 { .compatible = "mediatek,mt8167-mmsys", .data = &mt8167_mmsys_driver_data }, 430 { .compatible = "mediatek,mt8173-mmsys", .data = &mt8173_mmsys_driver_data }, 431 { .compatible = "mediatek,mt8183-mmsys", .data = &mt8183_mmsys_driver_data }, 432 { .compatible = "mediatek,mt8186-mmsys", .data = &mt8186_mmsys_driver_data }, 433 { .compatible = "mediatek,mt8188-vdosys0", .data = &mt8188_vdosys0_driver_data }, 434 { .compatible = "mediatek,mt8192-mmsys", .data = &mt8192_mmsys_driver_data }, 435 /* "mediatek,mt8195-mmsys" compatible is deprecated */ 436 { .compatible = "mediatek,mt8195-mmsys", .data = &mt8195_vdosys0_driver_data }, 437 { .compatible = "mediatek,mt8195-vdosys0", .data = &mt8195_vdosys0_driver_data }, 438 { .compatible = "mediatek,mt8195-vdosys1", .data = &mt8195_vdosys1_driver_data }, 439 { .compatible = "mediatek,mt8195-vppsys0", .data = &mt8195_vppsys0_driver_data }, 440 { .compatible = "mediatek,mt8195-vppsys1", .data = &mt8195_vppsys1_driver_data }, 441 { .compatible = "mediatek,mt8365-mmsys", .data = &mt8365_mmsys_driver_data }, 442 { /* sentinel */ } 443 }; 444 MODULE_DEVICE_TABLE(of, of_match_mtk_mmsys); 445 446 static struct platform_driver mtk_mmsys_drv = { 447 .driver = { 448 .name = "mtk-mmsys", 449 .of_match_table = of_match_mtk_mmsys, 450 }, 451 .probe = mtk_mmsys_probe, 452 .remove = mtk_mmsys_remove, 453 }; 454 module_platform_driver(mtk_mmsys_drv); 455 456 MODULE_AUTHOR("Yongqiang Niu <yongqiang.niu@mediatek.com>"); 457 MODULE_DESCRIPTION("MediaTek SoC MMSYS driver"); 458 MODULE_LICENSE("GPL"); 459