1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2015 MediaTek Inc. 4 * Authors: 5 * YT Shen <yt.shen@mediatek.com> 6 * CK Hu <ck.hu@mediatek.com> 7 */ 8 9 #include <linux/clk.h> 10 #include <linux/of.h> 11 #include <linux/of_address.h> 12 #include <linux/of_platform.h> 13 #include <linux/platform_device.h> 14 #include <linux/soc/mediatek/mtk-cmdq.h> 15 #include <drm/drm_print.h> 16 17 #include "mtk_crtc.h" 18 #include "mtk_ddp_comp.h" 19 #include "mtk_disp_drv.h" 20 #include "mtk_drm_drv.h" 21 #include "mtk_plane.h" 22 23 24 #define DISP_REG_DITHER_EN 0x0000 25 #define DITHER_EN BIT(0) 26 #define DISP_REG_DITHER_CFG 0x0020 27 #define DITHER_RELAY_MODE BIT(0) 28 #define DITHER_ENGINE_EN BIT(1) 29 #define DISP_DITHERING BIT(2) 30 #define DISP_REG_DITHER_SIZE 0x0030 31 #define DISP_REG_DITHER_5 0x0114 32 #define DISP_REG_DITHER_7 0x011c 33 #define DISP_REG_DITHER_15 0x013c 34 #define DITHER_LSB_ERR_SHIFT_R(x) (((x) & 0x7) << 28) 35 #define DITHER_ADD_LSHIFT_R(x) (((x) & 0x7) << 20) 36 #define DITHER_NEW_BIT_MODE BIT(0) 37 #define DISP_REG_DITHER_16 0x0140 38 #define DITHER_LSB_ERR_SHIFT_B(x) (((x) & 0x7) << 28) 39 #define DITHER_ADD_LSHIFT_B(x) (((x) & 0x7) << 20) 40 #define DITHER_LSB_ERR_SHIFT_G(x) (((x) & 0x7) << 12) 41 #define DITHER_ADD_LSHIFT_G(x) (((x) & 0x7) << 4) 42 43 #define DISP_REG_DSC_CON 0x0000 44 #define DSC_EN BIT(0) 45 #define DSC_DUAL_INOUT BIT(2) 46 #define DSC_BYPASS BIT(4) 47 #define DSC_UFOE_SEL BIT(16) 48 49 #define DISP_REG_OD_EN 0x0000 50 #define DISP_REG_OD_CFG 0x0020 51 #define OD_RELAYMODE BIT(0) 52 #define DISP_REG_OD_SIZE 0x0030 53 54 #define DISP_REG_POSTMASK_EN 0x0000 55 #define POSTMASK_EN BIT(0) 56 #define DISP_REG_POSTMASK_CFG 0x0020 57 #define POSTMASK_RELAY_MODE BIT(0) 58 #define DISP_REG_POSTMASK_SIZE 0x0030 59 60 #define DISP_REG_UFO_START 0x0000 61 #define UFO_BYPASS BIT(2) 62 63 struct mtk_ddp_comp_dev { 64 struct clk *clk; 65 void __iomem *regs; 66 struct cmdq_client_reg cmdq_reg; 67 }; 68 69 void mtk_ddp_write(struct cmdq_pkt *cmdq_pkt, unsigned int value, 70 struct cmdq_client_reg *cmdq_reg, void __iomem *regs, 71 unsigned int offset) 72 { 73 #if IS_REACHABLE(CONFIG_MTK_CMDQ) 74 if (cmdq_pkt) 75 cmdq_pkt_write(cmdq_pkt, cmdq_reg->subsys, 76 cmdq_reg->offset + offset, value); 77 else 78 #endif 79 writel(value, regs + offset); 80 } 81 82 void mtk_ddp_write_relaxed(struct cmdq_pkt *cmdq_pkt, unsigned int value, 83 struct cmdq_client_reg *cmdq_reg, void __iomem *regs, 84 unsigned int offset) 85 { 86 #if IS_REACHABLE(CONFIG_MTK_CMDQ) 87 if (cmdq_pkt) 88 cmdq_pkt_write(cmdq_pkt, cmdq_reg->subsys, 89 cmdq_reg->offset + offset, value); 90 else 91 #endif 92 writel_relaxed(value, regs + offset); 93 } 94 95 void mtk_ddp_write_mask(struct cmdq_pkt *cmdq_pkt, unsigned int value, 96 struct cmdq_client_reg *cmdq_reg, void __iomem *regs, 97 unsigned int offset, unsigned int mask) 98 { 99 #if IS_REACHABLE(CONFIG_MTK_CMDQ) 100 if (cmdq_pkt) { 101 cmdq_pkt_write_mask(cmdq_pkt, cmdq_reg->subsys, 102 cmdq_reg->offset + offset, value, mask); 103 } else { 104 #endif 105 u32 tmp = readl(regs + offset); 106 107 tmp = (tmp & ~mask) | (value & mask); 108 writel(tmp, regs + offset); 109 #if IS_REACHABLE(CONFIG_MTK_CMDQ) 110 } 111 #endif 112 } 113 114 static int mtk_ddp_clk_enable(struct device *dev) 115 { 116 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 117 118 return clk_prepare_enable(priv->clk); 119 } 120 121 static void mtk_ddp_clk_disable(struct device *dev) 122 { 123 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 124 125 clk_disable_unprepare(priv->clk); 126 } 127 128 void mtk_dither_set_common(void __iomem *regs, struct cmdq_client_reg *cmdq_reg, 129 unsigned int bpc, unsigned int cfg, 130 unsigned int dither_en, struct cmdq_pkt *cmdq_pkt) 131 { 132 /* If bpc equal to 0, the dithering function didn't be enabled */ 133 if (bpc == 0) 134 return; 135 136 if (bpc >= MTK_MIN_BPC) { 137 mtk_ddp_write(cmdq_pkt, 0, cmdq_reg, regs, DISP_REG_DITHER_5); 138 mtk_ddp_write(cmdq_pkt, 0, cmdq_reg, regs, DISP_REG_DITHER_7); 139 mtk_ddp_write(cmdq_pkt, 140 DITHER_LSB_ERR_SHIFT_R(MTK_MAX_BPC - bpc) | 141 DITHER_ADD_LSHIFT_R(MTK_MAX_BPC - bpc) | 142 DITHER_NEW_BIT_MODE, 143 cmdq_reg, regs, DISP_REG_DITHER_15); 144 mtk_ddp_write(cmdq_pkt, 145 DITHER_LSB_ERR_SHIFT_B(MTK_MAX_BPC - bpc) | 146 DITHER_ADD_LSHIFT_B(MTK_MAX_BPC - bpc) | 147 DITHER_LSB_ERR_SHIFT_G(MTK_MAX_BPC - bpc) | 148 DITHER_ADD_LSHIFT_G(MTK_MAX_BPC - bpc), 149 cmdq_reg, regs, DISP_REG_DITHER_16); 150 mtk_ddp_write(cmdq_pkt, dither_en, cmdq_reg, regs, cfg); 151 } 152 } 153 154 static void mtk_dither_config(struct device *dev, unsigned int w, 155 unsigned int h, unsigned int vrefresh, 156 unsigned int bpc, struct cmdq_pkt *cmdq_pkt) 157 { 158 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 159 160 mtk_ddp_write(cmdq_pkt, w << 16 | h, &priv->cmdq_reg, priv->regs, DISP_REG_DITHER_SIZE); 161 mtk_ddp_write(cmdq_pkt, DITHER_RELAY_MODE, &priv->cmdq_reg, priv->regs, 162 DISP_REG_DITHER_CFG); 163 mtk_dither_set_common(priv->regs, &priv->cmdq_reg, bpc, DISP_REG_DITHER_CFG, 164 DITHER_ENGINE_EN, cmdq_pkt); 165 } 166 167 static void mtk_dither_start(struct device *dev) 168 { 169 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 170 171 writel(DITHER_EN, priv->regs + DISP_REG_DITHER_EN); 172 } 173 174 static void mtk_dither_stop(struct device *dev) 175 { 176 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 177 178 writel_relaxed(0x0, priv->regs + DISP_REG_DITHER_EN); 179 } 180 181 static void mtk_dither_set(struct device *dev, unsigned int bpc, 182 unsigned int cfg, struct cmdq_pkt *cmdq_pkt) 183 { 184 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 185 186 mtk_dither_set_common(priv->regs, &priv->cmdq_reg, bpc, cfg, 187 DISP_DITHERING, cmdq_pkt); 188 } 189 190 static void mtk_dsc_config(struct device *dev, unsigned int w, 191 unsigned int h, unsigned int vrefresh, 192 unsigned int bpc, struct cmdq_pkt *cmdq_pkt) 193 { 194 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 195 196 /* dsc bypass mode */ 197 mtk_ddp_write_mask(cmdq_pkt, DSC_BYPASS, &priv->cmdq_reg, priv->regs, 198 DISP_REG_DSC_CON, DSC_BYPASS); 199 mtk_ddp_write_mask(cmdq_pkt, DSC_UFOE_SEL, &priv->cmdq_reg, priv->regs, 200 DISP_REG_DSC_CON, DSC_UFOE_SEL); 201 mtk_ddp_write_mask(cmdq_pkt, DSC_DUAL_INOUT, &priv->cmdq_reg, priv->regs, 202 DISP_REG_DSC_CON, DSC_DUAL_INOUT); 203 } 204 205 static void mtk_dsc_start(struct device *dev) 206 { 207 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 208 209 /* write with mask to reserve the value set in mtk_dsc_config */ 210 mtk_ddp_write_mask(NULL, DSC_EN, &priv->cmdq_reg, priv->regs, DISP_REG_DSC_CON, DSC_EN); 211 } 212 213 static void mtk_dsc_stop(struct device *dev) 214 { 215 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 216 217 writel_relaxed(0x0, priv->regs + DISP_REG_DSC_CON); 218 } 219 220 static void mtk_od_config(struct device *dev, unsigned int w, 221 unsigned int h, unsigned int vrefresh, 222 unsigned int bpc, struct cmdq_pkt *cmdq_pkt) 223 { 224 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 225 226 mtk_ddp_write(cmdq_pkt, w << 16 | h, &priv->cmdq_reg, priv->regs, DISP_REG_OD_SIZE); 227 mtk_ddp_write(cmdq_pkt, OD_RELAYMODE, &priv->cmdq_reg, priv->regs, DISP_REG_OD_CFG); 228 mtk_dither_set(dev, bpc, DISP_REG_OD_CFG, cmdq_pkt); 229 } 230 231 static void mtk_od_start(struct device *dev) 232 { 233 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 234 235 writel(1, priv->regs + DISP_REG_OD_EN); 236 } 237 238 static void mtk_postmask_config(struct device *dev, unsigned int w, 239 unsigned int h, unsigned int vrefresh, 240 unsigned int bpc, struct cmdq_pkt *cmdq_pkt) 241 { 242 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 243 244 mtk_ddp_write(cmdq_pkt, w << 16 | h, &priv->cmdq_reg, priv->regs, 245 DISP_REG_POSTMASK_SIZE); 246 mtk_ddp_write(cmdq_pkt, POSTMASK_RELAY_MODE, &priv->cmdq_reg, 247 priv->regs, DISP_REG_POSTMASK_CFG); 248 } 249 250 static void mtk_postmask_start(struct device *dev) 251 { 252 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 253 254 writel(POSTMASK_EN, priv->regs + DISP_REG_POSTMASK_EN); 255 } 256 257 static void mtk_postmask_stop(struct device *dev) 258 { 259 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 260 261 writel_relaxed(0x0, priv->regs + DISP_REG_POSTMASK_EN); 262 } 263 264 static void mtk_ufoe_start(struct device *dev) 265 { 266 struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); 267 268 writel(UFO_BYPASS, priv->regs + DISP_REG_UFO_START); 269 } 270 271 static const struct mtk_ddp_comp_funcs ddp_aal = { 272 .clk_enable = mtk_aal_clk_enable, 273 .clk_disable = mtk_aal_clk_disable, 274 .gamma_get_lut_size = mtk_aal_gamma_get_lut_size, 275 .gamma_set = mtk_aal_gamma_set, 276 .config = mtk_aal_config, 277 .start = mtk_aal_start, 278 .stop = mtk_aal_stop, 279 }; 280 281 static const struct mtk_ddp_comp_funcs ddp_ccorr = { 282 .clk_enable = mtk_ccorr_clk_enable, 283 .clk_disable = mtk_ccorr_clk_disable, 284 .config = mtk_ccorr_config, 285 .start = mtk_ccorr_start, 286 .stop = mtk_ccorr_stop, 287 .ctm_set = mtk_ccorr_ctm_set, 288 }; 289 290 static const struct mtk_ddp_comp_funcs ddp_color = { 291 .clk_enable = mtk_color_clk_enable, 292 .clk_disable = mtk_color_clk_disable, 293 .config = mtk_color_config, 294 .start = mtk_color_start, 295 }; 296 297 static const struct mtk_ddp_comp_funcs ddp_dither = { 298 .clk_enable = mtk_ddp_clk_enable, 299 .clk_disable = mtk_ddp_clk_disable, 300 .config = mtk_dither_config, 301 .start = mtk_dither_start, 302 .stop = mtk_dither_stop, 303 }; 304 305 static const struct mtk_ddp_comp_funcs ddp_dpi = { 306 .start = mtk_dpi_start, 307 .stop = mtk_dpi_stop, 308 .encoder_index = mtk_dpi_encoder_index, 309 }; 310 311 static const struct mtk_ddp_comp_funcs ddp_dsc = { 312 .clk_enable = mtk_ddp_clk_enable, 313 .clk_disable = mtk_ddp_clk_disable, 314 .config = mtk_dsc_config, 315 .start = mtk_dsc_start, 316 .stop = mtk_dsc_stop, 317 }; 318 319 static const struct mtk_ddp_comp_funcs ddp_dsi = { 320 .start = mtk_dsi_ddp_start, 321 .stop = mtk_dsi_ddp_stop, 322 .encoder_index = mtk_dsi_encoder_index, 323 }; 324 325 static const struct mtk_ddp_comp_funcs ddp_gamma = { 326 .clk_enable = mtk_gamma_clk_enable, 327 .clk_disable = mtk_gamma_clk_disable, 328 .gamma_get_lut_size = mtk_gamma_get_lut_size, 329 .gamma_set = mtk_gamma_set, 330 .config = mtk_gamma_config, 331 .start = mtk_gamma_start, 332 .stop = mtk_gamma_stop, 333 }; 334 335 static const struct mtk_ddp_comp_funcs ddp_merge = { 336 .clk_enable = mtk_merge_clk_enable, 337 .clk_disable = mtk_merge_clk_disable, 338 .start = mtk_merge_start, 339 .stop = mtk_merge_stop, 340 .config = mtk_merge_config, 341 }; 342 343 static const struct mtk_ddp_comp_funcs ddp_od = { 344 .clk_enable = mtk_ddp_clk_enable, 345 .clk_disable = mtk_ddp_clk_disable, 346 .config = mtk_od_config, 347 .start = mtk_od_start, 348 }; 349 350 static const struct mtk_ddp_comp_funcs ddp_ovl = { 351 .clk_enable = mtk_ovl_clk_enable, 352 .clk_disable = mtk_ovl_clk_disable, 353 .config = mtk_ovl_config, 354 .start = mtk_ovl_start, 355 .stop = mtk_ovl_stop, 356 .register_vblank_cb = mtk_ovl_register_vblank_cb, 357 .unregister_vblank_cb = mtk_ovl_unregister_vblank_cb, 358 .enable_vblank = mtk_ovl_enable_vblank, 359 .disable_vblank = mtk_ovl_disable_vblank, 360 .supported_rotations = mtk_ovl_supported_rotations, 361 .layer_nr = mtk_ovl_layer_nr, 362 .layer_check = mtk_ovl_layer_check, 363 .layer_config = mtk_ovl_layer_config, 364 .bgclr_in_on = mtk_ovl_bgclr_in_on, 365 .bgclr_in_off = mtk_ovl_bgclr_in_off, 366 .get_blend_modes = mtk_ovl_get_blend_modes, 367 .get_formats = mtk_ovl_get_formats, 368 .get_num_formats = mtk_ovl_get_num_formats, 369 .is_afbc_supported = mtk_ovl_is_afbc_supported, 370 }; 371 372 static const struct mtk_ddp_comp_funcs ddp_postmask = { 373 .clk_enable = mtk_ddp_clk_enable, 374 .clk_disable = mtk_ddp_clk_disable, 375 .config = mtk_postmask_config, 376 .start = mtk_postmask_start, 377 .stop = mtk_postmask_stop, 378 }; 379 380 static const struct mtk_ddp_comp_funcs ddp_rdma = { 381 .clk_enable = mtk_rdma_clk_enable, 382 .clk_disable = mtk_rdma_clk_disable, 383 .config = mtk_rdma_config, 384 .start = mtk_rdma_start, 385 .stop = mtk_rdma_stop, 386 .register_vblank_cb = mtk_rdma_register_vblank_cb, 387 .unregister_vblank_cb = mtk_rdma_unregister_vblank_cb, 388 .enable_vblank = mtk_rdma_enable_vblank, 389 .disable_vblank = mtk_rdma_disable_vblank, 390 .layer_nr = mtk_rdma_layer_nr, 391 .layer_config = mtk_rdma_layer_config, 392 .get_formats = mtk_rdma_get_formats, 393 .get_num_formats = mtk_rdma_get_num_formats, 394 }; 395 396 static const struct mtk_ddp_comp_funcs ddp_ufoe = { 397 .clk_enable = mtk_ddp_clk_enable, 398 .clk_disable = mtk_ddp_clk_disable, 399 .start = mtk_ufoe_start, 400 }; 401 402 static const struct mtk_ddp_comp_funcs ddp_ovl_adaptor = { 403 .power_on = mtk_ovl_adaptor_power_on, 404 .power_off = mtk_ovl_adaptor_power_off, 405 .clk_enable = mtk_ovl_adaptor_clk_enable, 406 .clk_disable = mtk_ovl_adaptor_clk_disable, 407 .config = mtk_ovl_adaptor_config, 408 .start = mtk_ovl_adaptor_start, 409 .stop = mtk_ovl_adaptor_stop, 410 .layer_nr = mtk_ovl_adaptor_layer_nr, 411 .layer_config = mtk_ovl_adaptor_layer_config, 412 .register_vblank_cb = mtk_ovl_adaptor_register_vblank_cb, 413 .unregister_vblank_cb = mtk_ovl_adaptor_unregister_vblank_cb, 414 .enable_vblank = mtk_ovl_adaptor_enable_vblank, 415 .disable_vblank = mtk_ovl_adaptor_disable_vblank, 416 .dma_dev_get = mtk_ovl_adaptor_dma_dev_get, 417 .connect = mtk_ovl_adaptor_connect, 418 .disconnect = mtk_ovl_adaptor_disconnect, 419 .add = mtk_ovl_adaptor_add_comp, 420 .remove = mtk_ovl_adaptor_remove_comp, 421 .get_blend_modes = mtk_ovl_adaptor_get_blend_modes, 422 .get_formats = mtk_ovl_adaptor_get_formats, 423 .get_num_formats = mtk_ovl_adaptor_get_num_formats, 424 .mode_valid = mtk_ovl_adaptor_mode_valid, 425 }; 426 427 static const char * const mtk_ddp_comp_stem[MTK_DDP_COMP_TYPE_MAX] = { 428 [MTK_DISP_AAL] = "aal", 429 [MTK_DISP_BLS] = "bls", 430 [MTK_DISP_CCORR] = "ccorr", 431 [MTK_DISP_COLOR] = "color", 432 [MTK_DISP_DITHER] = "dither", 433 [MTK_DISP_DSC] = "dsc", 434 [MTK_DISP_GAMMA] = "gamma", 435 [MTK_DISP_MERGE] = "merge", 436 [MTK_DISP_MUTEX] = "mutex", 437 [MTK_DISP_OD] = "od", 438 [MTK_DISP_OVL] = "ovl", 439 [MTK_DISP_OVL_2L] = "ovl-2l", 440 [MTK_DISP_OVL_ADAPTOR] = "ovl_adaptor", 441 [MTK_DISP_POSTMASK] = "postmask", 442 [MTK_DISP_PWM] = "pwm", 443 [MTK_DISP_RDMA] = "rdma", 444 [MTK_DISP_UFOE] = "ufoe", 445 [MTK_DISP_WDMA] = "wdma", 446 [MTK_DP_INTF] = "dp-intf", 447 [MTK_DPI] = "dpi", 448 [MTK_DSI] = "dsi", 449 }; 450 451 struct mtk_ddp_comp_match { 452 enum mtk_ddp_comp_type type; 453 int alias_id; 454 const struct mtk_ddp_comp_funcs *funcs; 455 }; 456 457 static const struct mtk_ddp_comp_match mtk_ddp_matches[DDP_COMPONENT_DRM_ID_MAX] = { 458 [DDP_COMPONENT_AAL0] = { MTK_DISP_AAL, 0, &ddp_aal }, 459 [DDP_COMPONENT_AAL1] = { MTK_DISP_AAL, 1, &ddp_aal }, 460 [DDP_COMPONENT_BLS] = { MTK_DISP_BLS, 0, NULL }, 461 [DDP_COMPONENT_CCORR] = { MTK_DISP_CCORR, 0, &ddp_ccorr }, 462 [DDP_COMPONENT_COLOR0] = { MTK_DISP_COLOR, 0, &ddp_color }, 463 [DDP_COMPONENT_COLOR1] = { MTK_DISP_COLOR, 1, &ddp_color }, 464 [DDP_COMPONENT_DITHER0] = { MTK_DISP_DITHER, 0, &ddp_dither }, 465 [DDP_COMPONENT_DP_INTF0] = { MTK_DP_INTF, 0, &ddp_dpi }, 466 [DDP_COMPONENT_DP_INTF1] = { MTK_DP_INTF, 1, &ddp_dpi }, 467 [DDP_COMPONENT_DPI0] = { MTK_DPI, 0, &ddp_dpi }, 468 [DDP_COMPONENT_DPI1] = { MTK_DPI, 1, &ddp_dpi }, 469 [DDP_COMPONENT_DRM_OVL_ADAPTOR] = { MTK_DISP_OVL_ADAPTOR, 0, &ddp_ovl_adaptor }, 470 [DDP_COMPONENT_DSC0] = { MTK_DISP_DSC, 0, &ddp_dsc }, 471 [DDP_COMPONENT_DSC1] = { MTK_DISP_DSC, 1, &ddp_dsc }, 472 [DDP_COMPONENT_DSI0] = { MTK_DSI, 0, &ddp_dsi }, 473 [DDP_COMPONENT_DSI1] = { MTK_DSI, 1, &ddp_dsi }, 474 [DDP_COMPONENT_DSI2] = { MTK_DSI, 2, &ddp_dsi }, 475 [DDP_COMPONENT_DSI3] = { MTK_DSI, 3, &ddp_dsi }, 476 [DDP_COMPONENT_GAMMA] = { MTK_DISP_GAMMA, 0, &ddp_gamma }, 477 [DDP_COMPONENT_MERGE0] = { MTK_DISP_MERGE, 0, &ddp_merge }, 478 [DDP_COMPONENT_MERGE1] = { MTK_DISP_MERGE, 1, &ddp_merge }, 479 [DDP_COMPONENT_MERGE2] = { MTK_DISP_MERGE, 2, &ddp_merge }, 480 [DDP_COMPONENT_MERGE3] = { MTK_DISP_MERGE, 3, &ddp_merge }, 481 [DDP_COMPONENT_MERGE4] = { MTK_DISP_MERGE, 4, &ddp_merge }, 482 [DDP_COMPONENT_MERGE5] = { MTK_DISP_MERGE, 5, &ddp_merge }, 483 [DDP_COMPONENT_OD0] = { MTK_DISP_OD, 0, &ddp_od }, 484 [DDP_COMPONENT_OD1] = { MTK_DISP_OD, 1, &ddp_od }, 485 [DDP_COMPONENT_OVL0] = { MTK_DISP_OVL, 0, &ddp_ovl }, 486 [DDP_COMPONENT_OVL1] = { MTK_DISP_OVL, 1, &ddp_ovl }, 487 [DDP_COMPONENT_OVL_2L0] = { MTK_DISP_OVL_2L, 0, &ddp_ovl }, 488 [DDP_COMPONENT_OVL_2L1] = { MTK_DISP_OVL_2L, 1, &ddp_ovl }, 489 [DDP_COMPONENT_OVL_2L2] = { MTK_DISP_OVL_2L, 2, &ddp_ovl }, 490 [DDP_COMPONENT_POSTMASK0] = { MTK_DISP_POSTMASK, 0, &ddp_postmask }, 491 [DDP_COMPONENT_PWM0] = { MTK_DISP_PWM, 0, NULL }, 492 [DDP_COMPONENT_PWM1] = { MTK_DISP_PWM, 1, NULL }, 493 [DDP_COMPONENT_PWM2] = { MTK_DISP_PWM, 2, NULL }, 494 [DDP_COMPONENT_RDMA0] = { MTK_DISP_RDMA, 0, &ddp_rdma }, 495 [DDP_COMPONENT_RDMA1] = { MTK_DISP_RDMA, 1, &ddp_rdma }, 496 [DDP_COMPONENT_RDMA2] = { MTK_DISP_RDMA, 2, &ddp_rdma }, 497 [DDP_COMPONENT_RDMA4] = { MTK_DISP_RDMA, 4, &ddp_rdma }, 498 [DDP_COMPONENT_UFOE] = { MTK_DISP_UFOE, 0, &ddp_ufoe }, 499 [DDP_COMPONENT_WDMA0] = { MTK_DISP_WDMA, 0, NULL }, 500 [DDP_COMPONENT_WDMA1] = { MTK_DISP_WDMA, 1, NULL }, 501 }; 502 503 static bool mtk_ddp_comp_find(struct device *dev, 504 const unsigned int *path, 505 unsigned int path_len, 506 struct mtk_ddp_comp *ddp_comp) 507 { 508 unsigned int i; 509 510 if (path == NULL) 511 return false; 512 513 for (i = 0U; i < path_len; i++) 514 if (dev == ddp_comp[path[i]].dev) 515 return true; 516 517 return false; 518 } 519 520 static int mtk_ddp_comp_find_in_route(struct device *dev, 521 const struct mtk_drm_route *routes, 522 unsigned int num_routes, 523 struct mtk_ddp_comp *ddp_comp) 524 { 525 unsigned int i; 526 527 if (!routes) 528 return -EINVAL; 529 530 for (i = 0; i < num_routes; i++) 531 if (dev == ddp_comp[routes[i].route_ddp].dev) 532 return BIT(routes[i].crtc_id); 533 534 return -ENODEV; 535 } 536 537 static bool mtk_ddp_path_available(const unsigned int *path, 538 unsigned int path_len, 539 struct device_node **comp_node) 540 { 541 unsigned int i; 542 543 if (!path || !path_len) 544 return false; 545 546 for (i = 0U; i < path_len; i++) { 547 /* OVL_ADAPTOR doesn't have a device node */ 548 if (path[i] == DDP_COMPONENT_DRM_OVL_ADAPTOR) 549 continue; 550 551 if (!comp_node[path[i]]) 552 return false; 553 } 554 555 return true; 556 } 557 558 int mtk_ddp_comp_get_id(struct device_node *node, 559 enum mtk_ddp_comp_type comp_type) 560 { 561 int id = of_alias_get_id(node, mtk_ddp_comp_stem[comp_type]); 562 int i; 563 564 for (i = 0; i < ARRAY_SIZE(mtk_ddp_matches); i++) { 565 if (comp_type == mtk_ddp_matches[i].type && 566 (id < 0 || id == mtk_ddp_matches[i].alias_id)) 567 return i; 568 } 569 570 return -EINVAL; 571 } 572 573 int mtk_find_possible_crtcs(struct drm_device *drm, struct device *dev) 574 { 575 struct mtk_drm_private *private = drm->dev_private; 576 const struct mtk_mmsys_driver_data *data; 577 struct mtk_drm_private *priv_n; 578 int i = 0, j; 579 int ret; 580 581 for (j = 0; j < private->data->mmsys_dev_num; j++) { 582 priv_n = private->all_drm_private[j]; 583 data = priv_n->data; 584 585 if (mtk_ddp_path_available(data->main_path, data->main_len, 586 priv_n->comp_node)) { 587 if (mtk_ddp_comp_find(dev, data->main_path, 588 data->main_len, 589 priv_n->ddp_comp)) 590 return BIT(i); 591 i++; 592 } 593 594 if (mtk_ddp_path_available(data->ext_path, data->ext_len, 595 priv_n->comp_node)) { 596 if (mtk_ddp_comp_find(dev, data->ext_path, 597 data->ext_len, 598 priv_n->ddp_comp)) 599 return BIT(i); 600 i++; 601 } 602 603 if (mtk_ddp_path_available(data->third_path, data->third_len, 604 priv_n->comp_node)) { 605 if (mtk_ddp_comp_find(dev, data->third_path, 606 data->third_len, 607 priv_n->ddp_comp)) 608 return BIT(i); 609 i++; 610 } 611 } 612 613 ret = mtk_ddp_comp_find_in_route(dev, 614 private->data->conn_routes, 615 private->data->num_conn_routes, 616 private->ddp_comp); 617 618 if (ret < 0) 619 DRM_INFO("Failed to find comp in ddp table, ret = %d\n", ret); 620 621 return ret; 622 } 623 624 int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp, 625 unsigned int comp_id) 626 { 627 struct platform_device *comp_pdev; 628 enum mtk_ddp_comp_type type; 629 struct mtk_ddp_comp_dev *priv; 630 #if IS_REACHABLE(CONFIG_MTK_CMDQ) 631 int ret; 632 #endif 633 634 if (comp_id >= DDP_COMPONENT_DRM_ID_MAX) 635 return -EINVAL; 636 637 type = mtk_ddp_matches[comp_id].type; 638 639 comp->id = comp_id; 640 comp->funcs = mtk_ddp_matches[comp_id].funcs; 641 /* Not all drm components have a DTS device node, such as ovl_adaptor, 642 * which is the drm bring up sub driver 643 */ 644 if (!node) 645 return 0; 646 647 comp_pdev = of_find_device_by_node(node); 648 if (!comp_pdev) { 649 DRM_INFO("Waiting for device %s\n", node->full_name); 650 return -EPROBE_DEFER; 651 } 652 comp->dev = &comp_pdev->dev; 653 654 if (type == MTK_DISP_AAL || 655 type == MTK_DISP_BLS || 656 type == MTK_DISP_CCORR || 657 type == MTK_DISP_COLOR || 658 type == MTK_DISP_GAMMA || 659 type == MTK_DISP_MERGE || 660 type == MTK_DISP_OVL || 661 type == MTK_DISP_OVL_2L || 662 type == MTK_DISP_PWM || 663 type == MTK_DISP_RDMA || 664 type == MTK_DPI || 665 type == MTK_DP_INTF || 666 type == MTK_DSI) 667 return 0; 668 669 priv = devm_kzalloc(comp->dev, sizeof(*priv), GFP_KERNEL); 670 if (!priv) 671 return -ENOMEM; 672 673 priv->regs = of_iomap(node, 0); 674 priv->clk = of_clk_get(node, 0); 675 if (IS_ERR(priv->clk)) 676 return PTR_ERR(priv->clk); 677 678 #if IS_REACHABLE(CONFIG_MTK_CMDQ) 679 ret = cmdq_dev_get_client_reg(comp->dev, &priv->cmdq_reg, 0); 680 if (ret) 681 dev_dbg(comp->dev, "get mediatek,gce-client-reg fail!\n"); 682 #endif 683 684 platform_set_drvdata(comp_pdev, priv); 685 686 return 0; 687 } 688