1 /* 2 * Copyright (C) STMicroelectronics SA 2014 3 * Authors: Benjamin Gaignard <benjamin.gaignard@st.com> 4 * Vincent Abriou <vincent.abriou@st.com> 5 * for STMicroelectronics. 6 * License terms: GNU General Public License (GPL), version 2 7 */ 8 9 #include <linux/clk.h> 10 #include <linux/component.h> 11 #include <linux/module.h> 12 #include <linux/of_platform.h> 13 #include <linux/platform_device.h> 14 #include <linux/reset.h> 15 #include <linux/seq_file.h> 16 17 #include <drm/drmP.h> 18 #include <drm/drm_crtc_helper.h> 19 20 #include "sti_crtc.h" 21 #include "sti_vtg.h" 22 23 /* glue registers */ 24 #define TVO_CSC_MAIN_M0 0x000 25 #define TVO_CSC_MAIN_M1 0x004 26 #define TVO_CSC_MAIN_M2 0x008 27 #define TVO_CSC_MAIN_M3 0x00c 28 #define TVO_CSC_MAIN_M4 0x010 29 #define TVO_CSC_MAIN_M5 0x014 30 #define TVO_CSC_MAIN_M6 0x018 31 #define TVO_CSC_MAIN_M7 0x01c 32 #define TVO_MAIN_IN_VID_FORMAT 0x030 33 #define TVO_CSC_AUX_M0 0x100 34 #define TVO_CSC_AUX_M1 0x104 35 #define TVO_CSC_AUX_M2 0x108 36 #define TVO_CSC_AUX_M3 0x10c 37 #define TVO_CSC_AUX_M4 0x110 38 #define TVO_CSC_AUX_M5 0x114 39 #define TVO_CSC_AUX_M6 0x118 40 #define TVO_CSC_AUX_M7 0x11c 41 #define TVO_AUX_IN_VID_FORMAT 0x130 42 #define TVO_VIP_HDF 0x400 43 #define TVO_HD_SYNC_SEL 0x418 44 #define TVO_HD_DAC_CFG_OFF 0x420 45 #define TVO_VIP_HDMI 0x500 46 #define TVO_HDMI_FORCE_COLOR_0 0x504 47 #define TVO_HDMI_FORCE_COLOR_1 0x508 48 #define TVO_HDMI_CLIP_VALUE_B_CB 0x50c 49 #define TVO_HDMI_CLIP_VALUE_Y_G 0x510 50 #define TVO_HDMI_CLIP_VALUE_R_CR 0x514 51 #define TVO_HDMI_SYNC_SEL 0x518 52 #define TVO_HDMI_DFV_OBS 0x540 53 #define TVO_VIP_DVO 0x600 54 #define TVO_DVO_SYNC_SEL 0x618 55 #define TVO_DVO_CONFIG 0x620 56 57 #define TVO_IN_FMT_SIGNED BIT(0) 58 #define TVO_SYNC_EXT BIT(4) 59 60 #define TVO_VIP_REORDER_R_SHIFT 24 61 #define TVO_VIP_REORDER_G_SHIFT 20 62 #define TVO_VIP_REORDER_B_SHIFT 16 63 #define TVO_VIP_REORDER_MASK 0x3 64 #define TVO_VIP_REORDER_Y_G_SEL 0 65 #define TVO_VIP_REORDER_CB_B_SEL 1 66 #define TVO_VIP_REORDER_CR_R_SEL 2 67 68 #define TVO_VIP_CLIP_SHIFT 8 69 #define TVO_VIP_CLIP_MASK 0x7 70 #define TVO_VIP_CLIP_DISABLED 0 71 #define TVO_VIP_CLIP_EAV_SAV 1 72 #define TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y 2 73 #define TVO_VIP_CLIP_LIMITED_RANGE_CB_CR 3 74 #define TVO_VIP_CLIP_PROG_RANGE 4 75 76 #define TVO_VIP_RND_SHIFT 4 77 #define TVO_VIP_RND_MASK 0x3 78 #define TVO_VIP_RND_8BIT_ROUNDED 0 79 #define TVO_VIP_RND_10BIT_ROUNDED 1 80 #define TVO_VIP_RND_12BIT_ROUNDED 2 81 82 #define TVO_VIP_SEL_INPUT_MASK 0xf 83 #define TVO_VIP_SEL_INPUT_MAIN 0x0 84 #define TVO_VIP_SEL_INPUT_AUX 0x8 85 #define TVO_VIP_SEL_INPUT_FORCE_COLOR 0xf 86 #define TVO_VIP_SEL_INPUT_BYPASS_MASK 0x1 87 #define TVO_VIP_SEL_INPUT_BYPASSED 1 88 89 #define TVO_SYNC_MAIN_VTG_SET_REF 0x00 90 #define TVO_SYNC_AUX_VTG_SET_REF 0x10 91 92 #define TVO_SYNC_HD_DCS_SHIFT 8 93 94 #define TVO_SYNC_DVO_PAD_HSYNC_SHIFT 8 95 #define TVO_SYNC_DVO_PAD_VSYNC_SHIFT 16 96 97 #define ENCODER_CRTC_MASK (BIT(0) | BIT(1)) 98 99 #define TVO_MIN_HD_HEIGHT 720 100 101 /* enum listing the supported output data format */ 102 enum sti_tvout_video_out_type { 103 STI_TVOUT_VIDEO_OUT_RGB, 104 STI_TVOUT_VIDEO_OUT_YUV, 105 }; 106 107 struct sti_tvout { 108 struct device *dev; 109 struct drm_device *drm_dev; 110 void __iomem *regs; 111 struct reset_control *reset; 112 struct drm_encoder *hdmi; 113 struct drm_encoder *hda; 114 struct drm_encoder *dvo; 115 bool debugfs_registered; 116 }; 117 118 struct sti_tvout_encoder { 119 struct drm_encoder encoder; 120 struct sti_tvout *tvout; 121 }; 122 123 #define to_sti_tvout_encoder(x) \ 124 container_of(x, struct sti_tvout_encoder, encoder) 125 126 #define to_sti_tvout(x) to_sti_tvout_encoder(x)->tvout 127 128 /* preformatter conversion matrix */ 129 static const u32 rgb_to_ycbcr_601[8] = { 130 0xF927082E, 0x04C9FEAB, 0x01D30964, 0xFA95FD3D, 131 0x0000082E, 0x00002000, 0x00002000, 0x00000000 132 }; 133 134 /* 709 RGB to YCbCr */ 135 static const u32 rgb_to_ycbcr_709[8] = { 136 0xF891082F, 0x0367FF40, 0x01280B71, 0xF9B1FE20, 137 0x0000082F, 0x00002000, 0x00002000, 0x00000000 138 }; 139 140 static u32 tvout_read(struct sti_tvout *tvout, int offset) 141 { 142 return readl(tvout->regs + offset); 143 } 144 145 static void tvout_write(struct sti_tvout *tvout, u32 val, int offset) 146 { 147 writel(val, tvout->regs + offset); 148 } 149 150 /** 151 * Set the clipping mode of a VIP 152 * 153 * @tvout: tvout structure 154 * @reg: register to set 155 * @cr_r: 156 * @y_g: 157 * @cb_b: 158 */ 159 static void tvout_vip_set_color_order(struct sti_tvout *tvout, int reg, 160 u32 cr_r, u32 y_g, u32 cb_b) 161 { 162 u32 val = tvout_read(tvout, reg); 163 164 val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT); 165 val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT); 166 val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT); 167 val |= cr_r << TVO_VIP_REORDER_R_SHIFT; 168 val |= y_g << TVO_VIP_REORDER_G_SHIFT; 169 val |= cb_b << TVO_VIP_REORDER_B_SHIFT; 170 171 tvout_write(tvout, val, reg); 172 } 173 174 /** 175 * Set the clipping mode of a VIP 176 * 177 * @tvout: tvout structure 178 * @reg: register to set 179 * @range: clipping range 180 */ 181 static void tvout_vip_set_clip_mode(struct sti_tvout *tvout, int reg, u32 range) 182 { 183 u32 val = tvout_read(tvout, reg); 184 185 val &= ~(TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT); 186 val |= range << TVO_VIP_CLIP_SHIFT; 187 tvout_write(tvout, val, reg); 188 } 189 190 /** 191 * Set the rounded value of a VIP 192 * 193 * @tvout: tvout structure 194 * @reg: register to set 195 * @rnd: rounded val per component 196 */ 197 static void tvout_vip_set_rnd(struct sti_tvout *tvout, int reg, u32 rnd) 198 { 199 u32 val = tvout_read(tvout, reg); 200 201 val &= ~(TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT); 202 val |= rnd << TVO_VIP_RND_SHIFT; 203 tvout_write(tvout, val, reg); 204 } 205 206 /** 207 * Select the VIP input 208 * 209 * @tvout: tvout structure 210 * @reg: register to set 211 * @main_path: main or auxiliary path 212 * @sel_input_logic_inverted: need to invert the logic 213 * @sel_input: selected_input (main/aux + conv) 214 */ 215 static void tvout_vip_set_sel_input(struct sti_tvout *tvout, 216 int reg, 217 bool main_path, 218 bool sel_input_logic_inverted, 219 enum sti_tvout_video_out_type video_out) 220 { 221 u32 sel_input; 222 u32 val = tvout_read(tvout, reg); 223 224 if (main_path) 225 sel_input = TVO_VIP_SEL_INPUT_MAIN; 226 else 227 sel_input = TVO_VIP_SEL_INPUT_AUX; 228 229 switch (video_out) { 230 case STI_TVOUT_VIDEO_OUT_RGB: 231 sel_input |= TVO_VIP_SEL_INPUT_BYPASSED; 232 break; 233 case STI_TVOUT_VIDEO_OUT_YUV: 234 sel_input &= ~TVO_VIP_SEL_INPUT_BYPASSED; 235 break; 236 } 237 238 /* on stih407 chip the sel_input bypass mode logic is inverted */ 239 if (sel_input_logic_inverted) 240 sel_input = sel_input ^ TVO_VIP_SEL_INPUT_BYPASS_MASK; 241 242 val &= ~TVO_VIP_SEL_INPUT_MASK; 243 val |= sel_input; 244 tvout_write(tvout, val, reg); 245 } 246 247 /** 248 * Select the input video signed or unsigned 249 * 250 * @tvout: tvout structure 251 * @reg: register to set 252 * @in_vid_signed: used video input format 253 */ 254 static void tvout_vip_set_in_vid_fmt(struct sti_tvout *tvout, 255 int reg, u32 in_vid_fmt) 256 { 257 u32 val = tvout_read(tvout, reg); 258 259 val &= ~TVO_IN_FMT_SIGNED; 260 val |= in_vid_fmt; 261 tvout_write(tvout, val, reg); 262 } 263 264 /** 265 * Set preformatter matrix 266 * 267 * @tvout: tvout structure 268 * @mode: display mode structure 269 */ 270 static void tvout_preformatter_set_matrix(struct sti_tvout *tvout, 271 struct drm_display_mode *mode) 272 { 273 unsigned int i; 274 const u32 *pf_matrix; 275 276 if (mode->vdisplay >= TVO_MIN_HD_HEIGHT) 277 pf_matrix = rgb_to_ycbcr_709; 278 else 279 pf_matrix = rgb_to_ycbcr_601; 280 281 for (i = 0; i < 8; i++) { 282 tvout_write(tvout, *(pf_matrix + i), 283 TVO_CSC_MAIN_M0 + (i * 4)); 284 tvout_write(tvout, *(pf_matrix + i), 285 TVO_CSC_AUX_M0 + (i * 4)); 286 } 287 } 288 289 /** 290 * Start VIP block for DVO output 291 * 292 * @tvout: pointer on tvout structure 293 * @main_path: true if main path has to be used in the vip configuration 294 * else aux path is used. 295 */ 296 static void tvout_dvo_start(struct sti_tvout *tvout, bool main_path) 297 { 298 struct device_node *node = tvout->dev->of_node; 299 bool sel_input_logic_inverted = false; 300 u32 tvo_in_vid_format; 301 int val, tmp; 302 303 dev_dbg(tvout->dev, "%s\n", __func__); 304 305 if (main_path) { 306 DRM_DEBUG_DRIVER("main vip for DVO\n"); 307 /* Select the input sync for dvo */ 308 tmp = TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_DVO; 309 val = tmp << TVO_SYNC_DVO_PAD_VSYNC_SHIFT; 310 val |= tmp << TVO_SYNC_DVO_PAD_HSYNC_SHIFT; 311 val |= tmp; 312 tvout_write(tvout, val, TVO_DVO_SYNC_SEL); 313 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT; 314 } else { 315 DRM_DEBUG_DRIVER("aux vip for DVO\n"); 316 /* Select the input sync for dvo */ 317 tmp = TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_DVO; 318 val = tmp << TVO_SYNC_DVO_PAD_VSYNC_SHIFT; 319 val |= tmp << TVO_SYNC_DVO_PAD_HSYNC_SHIFT; 320 val |= tmp; 321 tvout_write(tvout, val, TVO_DVO_SYNC_SEL); 322 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT; 323 } 324 325 /* Set color channel order */ 326 tvout_vip_set_color_order(tvout, TVO_VIP_DVO, 327 TVO_VIP_REORDER_CR_R_SEL, 328 TVO_VIP_REORDER_Y_G_SEL, 329 TVO_VIP_REORDER_CB_B_SEL); 330 331 /* Set clipping mode */ 332 tvout_vip_set_clip_mode(tvout, TVO_VIP_DVO, TVO_VIP_CLIP_DISABLED); 333 334 /* Set round mode (rounded to 8-bit per component) */ 335 tvout_vip_set_rnd(tvout, TVO_VIP_DVO, TVO_VIP_RND_8BIT_ROUNDED); 336 337 if (of_device_is_compatible(node, "st,stih407-tvout")) { 338 /* Set input video format */ 339 tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format, 340 TVO_IN_FMT_SIGNED); 341 sel_input_logic_inverted = true; 342 } 343 344 /* Input selection */ 345 tvout_vip_set_sel_input(tvout, TVO_VIP_DVO, main_path, 346 sel_input_logic_inverted, 347 STI_TVOUT_VIDEO_OUT_RGB); 348 } 349 350 /** 351 * Start VIP block for HDMI output 352 * 353 * @tvout: pointer on tvout structure 354 * @main_path: true if main path has to be used in the vip configuration 355 * else aux path is used. 356 */ 357 static void tvout_hdmi_start(struct sti_tvout *tvout, bool main_path) 358 { 359 struct device_node *node = tvout->dev->of_node; 360 bool sel_input_logic_inverted = false; 361 u32 tvo_in_vid_format; 362 363 dev_dbg(tvout->dev, "%s\n", __func__); 364 365 if (main_path) { 366 DRM_DEBUG_DRIVER("main vip for hdmi\n"); 367 /* select the input sync for hdmi */ 368 tvout_write(tvout, 369 TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDMI, 370 TVO_HDMI_SYNC_SEL); 371 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT; 372 } else { 373 DRM_DEBUG_DRIVER("aux vip for hdmi\n"); 374 /* select the input sync for hdmi */ 375 tvout_write(tvout, 376 TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDMI, 377 TVO_HDMI_SYNC_SEL); 378 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT; 379 } 380 381 /* set color channel order */ 382 tvout_vip_set_color_order(tvout, TVO_VIP_HDMI, 383 TVO_VIP_REORDER_CR_R_SEL, 384 TVO_VIP_REORDER_Y_G_SEL, 385 TVO_VIP_REORDER_CB_B_SEL); 386 387 /* set clipping mode */ 388 tvout_vip_set_clip_mode(tvout, TVO_VIP_HDMI, TVO_VIP_CLIP_DISABLED); 389 390 /* set round mode (rounded to 8-bit per component) */ 391 tvout_vip_set_rnd(tvout, TVO_VIP_HDMI, TVO_VIP_RND_8BIT_ROUNDED); 392 393 if (of_device_is_compatible(node, "st,stih407-tvout")) { 394 /* set input video format */ 395 tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format, 396 TVO_IN_FMT_SIGNED); 397 sel_input_logic_inverted = true; 398 } 399 400 /* input selection */ 401 tvout_vip_set_sel_input(tvout, TVO_VIP_HDMI, main_path, 402 sel_input_logic_inverted, STI_TVOUT_VIDEO_OUT_RGB); 403 } 404 405 /** 406 * Start HDF VIP and HD DAC 407 * 408 * @tvout: pointer on tvout structure 409 * @main_path: true if main path has to be used in the vip configuration 410 * else aux path is used. 411 */ 412 static void tvout_hda_start(struct sti_tvout *tvout, bool main_path) 413 { 414 struct device_node *node = tvout->dev->of_node; 415 bool sel_input_logic_inverted = false; 416 u32 tvo_in_vid_format; 417 int val; 418 419 dev_dbg(tvout->dev, "%s\n", __func__); 420 421 if (main_path) { 422 DRM_DEBUG_DRIVER("main vip for HDF\n"); 423 /* Select the input sync for HD analog and HD DCS */ 424 val = TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDDCS; 425 val = val << TVO_SYNC_HD_DCS_SHIFT; 426 val |= TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDF; 427 tvout_write(tvout, val, TVO_HD_SYNC_SEL); 428 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT; 429 } else { 430 DRM_DEBUG_DRIVER("aux vip for HDF\n"); 431 /* Select the input sync for HD analog and HD DCS */ 432 val = TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDDCS; 433 val = val << TVO_SYNC_HD_DCS_SHIFT; 434 val |= TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDF; 435 tvout_write(tvout, val, TVO_HD_SYNC_SEL); 436 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT; 437 } 438 439 /* set color channel order */ 440 tvout_vip_set_color_order(tvout, TVO_VIP_HDF, 441 TVO_VIP_REORDER_CR_R_SEL, 442 TVO_VIP_REORDER_Y_G_SEL, 443 TVO_VIP_REORDER_CB_B_SEL); 444 445 /* set clipping mode */ 446 tvout_vip_set_clip_mode(tvout, TVO_VIP_HDF, TVO_VIP_CLIP_DISABLED); 447 448 /* set round mode (rounded to 10-bit per component) */ 449 tvout_vip_set_rnd(tvout, TVO_VIP_HDF, TVO_VIP_RND_10BIT_ROUNDED); 450 451 if (of_device_is_compatible(node, "st,stih407-tvout")) { 452 /* set input video format */ 453 tvout_vip_set_in_vid_fmt(tvout, 454 tvo_in_vid_format, TVO_IN_FMT_SIGNED); 455 sel_input_logic_inverted = true; 456 } 457 458 /* Input selection */ 459 tvout_vip_set_sel_input(tvout, TVO_VIP_HDF, main_path, 460 sel_input_logic_inverted, 461 STI_TVOUT_VIDEO_OUT_YUV); 462 463 /* power up HD DAC */ 464 tvout_write(tvout, 0, TVO_HD_DAC_CFG_OFF); 465 } 466 467 #define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \ 468 readl(tvout->regs + reg)) 469 470 static void tvout_dbg_vip(struct seq_file *s, int val) 471 { 472 int r, g, b, tmp, mask; 473 char *const reorder[] = {"Y_G", "Cb_B", "Cr_R"}; 474 char *const clipping[] = {"No", "EAV/SAV", "Limited range RGB/Y", 475 "Limited range Cb/Cr", "decided by register"}; 476 char *const round[] = {"8-bit", "10-bit", "12-bit"}; 477 char *const input_sel[] = {"Main (color matrix enabled)", 478 "Main (color matrix by-passed)", 479 "", "", "", "", "", "", 480 "Aux (color matrix enabled)", 481 "Aux (color matrix by-passed)", 482 "", "", "", "", "", "Force value"}; 483 484 seq_puts(s, "\t"); 485 mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT; 486 r = (val & mask) >> TVO_VIP_REORDER_R_SHIFT; 487 mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT; 488 g = (val & mask) >> TVO_VIP_REORDER_G_SHIFT; 489 mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT; 490 b = (val & mask) >> TVO_VIP_REORDER_B_SHIFT; 491 seq_printf(s, "%-24s %s->%s %s->%s %s->%s\n", "Reorder:", 492 reorder[r], reorder[TVO_VIP_REORDER_CR_R_SEL], 493 reorder[g], reorder[TVO_VIP_REORDER_Y_G_SEL], 494 reorder[b], reorder[TVO_VIP_REORDER_CB_B_SEL]); 495 seq_puts(s, "\t\t\t\t\t"); 496 mask = TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT; 497 tmp = (val & mask) >> TVO_VIP_CLIP_SHIFT; 498 seq_printf(s, "%-24s %s\n", "Clipping:", clipping[tmp]); 499 seq_puts(s, "\t\t\t\t\t"); 500 mask = TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT; 501 tmp = (val & mask) >> TVO_VIP_RND_SHIFT; 502 seq_printf(s, "%-24s input data rounded to %s per component\n", 503 "Round:", round[tmp]); 504 seq_puts(s, "\t\t\t\t\t"); 505 tmp = (val & TVO_VIP_SEL_INPUT_MASK); 506 seq_printf(s, "%-24s %s", "Input selection:", input_sel[tmp]); 507 } 508 509 static void tvout_dbg_hd_dac_cfg(struct seq_file *s, int val) 510 { 511 seq_printf(s, "\t%-24s %s", "HD DAC:", 512 val & 1 ? "disabled" : "enabled"); 513 } 514 515 static int tvout_dbg_show(struct seq_file *s, void *data) 516 { 517 struct drm_info_node *node = s->private; 518 struct sti_tvout *tvout = (struct sti_tvout *)node->info_ent->data; 519 struct drm_crtc *crtc; 520 521 seq_printf(s, "TVOUT: (vaddr = 0x%p)", tvout->regs); 522 523 seq_puts(s, "\n\n HDMI encoder: "); 524 crtc = tvout->hdmi->crtc; 525 if (crtc) { 526 seq_printf(s, "connected to %s path", 527 sti_crtc_is_main(crtc) ? "main" : "aux"); 528 DBGFS_DUMP(TVO_HDMI_SYNC_SEL); 529 DBGFS_DUMP(TVO_VIP_HDMI); 530 tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_HDMI)); 531 } else { 532 seq_puts(s, "disabled"); 533 } 534 535 seq_puts(s, "\n\n DVO encoder: "); 536 crtc = tvout->dvo->crtc; 537 if (crtc) { 538 seq_printf(s, "connected to %s path", 539 sti_crtc_is_main(crtc) ? "main" : "aux"); 540 DBGFS_DUMP(TVO_DVO_SYNC_SEL); 541 DBGFS_DUMP(TVO_DVO_CONFIG); 542 DBGFS_DUMP(TVO_VIP_DVO); 543 tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_DVO)); 544 } else { 545 seq_puts(s, "disabled"); 546 } 547 548 seq_puts(s, "\n\n HDA encoder: "); 549 crtc = tvout->hda->crtc; 550 if (crtc) { 551 seq_printf(s, "connected to %s path", 552 sti_crtc_is_main(crtc) ? "main" : "aux"); 553 DBGFS_DUMP(TVO_HD_SYNC_SEL); 554 DBGFS_DUMP(TVO_HD_DAC_CFG_OFF); 555 tvout_dbg_hd_dac_cfg(s, 556 readl(tvout->regs + TVO_HD_DAC_CFG_OFF)); 557 DBGFS_DUMP(TVO_VIP_HDF); 558 tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_HDF)); 559 } else { 560 seq_puts(s, "disabled"); 561 } 562 563 seq_puts(s, "\n\n main path configuration"); 564 DBGFS_DUMP(TVO_CSC_MAIN_M0); 565 DBGFS_DUMP(TVO_CSC_MAIN_M1); 566 DBGFS_DUMP(TVO_CSC_MAIN_M2); 567 DBGFS_DUMP(TVO_CSC_MAIN_M3); 568 DBGFS_DUMP(TVO_CSC_MAIN_M4); 569 DBGFS_DUMP(TVO_CSC_MAIN_M5); 570 DBGFS_DUMP(TVO_CSC_MAIN_M6); 571 DBGFS_DUMP(TVO_CSC_MAIN_M7); 572 DBGFS_DUMP(TVO_MAIN_IN_VID_FORMAT); 573 574 seq_puts(s, "\n\n auxiliary path configuration"); 575 DBGFS_DUMP(TVO_CSC_AUX_M0); 576 DBGFS_DUMP(TVO_CSC_AUX_M2); 577 DBGFS_DUMP(TVO_CSC_AUX_M3); 578 DBGFS_DUMP(TVO_CSC_AUX_M4); 579 DBGFS_DUMP(TVO_CSC_AUX_M5); 580 DBGFS_DUMP(TVO_CSC_AUX_M6); 581 DBGFS_DUMP(TVO_CSC_AUX_M7); 582 DBGFS_DUMP(TVO_AUX_IN_VID_FORMAT); 583 seq_puts(s, "\n"); 584 585 return 0; 586 } 587 588 static struct drm_info_list tvout_debugfs_files[] = { 589 { "tvout", tvout_dbg_show, 0, NULL }, 590 }; 591 592 static void tvout_debugfs_exit(struct sti_tvout *tvout, struct drm_minor *minor) 593 { 594 drm_debugfs_remove_files(tvout_debugfs_files, 595 ARRAY_SIZE(tvout_debugfs_files), 596 minor); 597 } 598 599 static int tvout_debugfs_init(struct sti_tvout *tvout, struct drm_minor *minor) 600 { 601 unsigned int i; 602 603 for (i = 0; i < ARRAY_SIZE(tvout_debugfs_files); i++) 604 tvout_debugfs_files[i].data = tvout; 605 606 return drm_debugfs_create_files(tvout_debugfs_files, 607 ARRAY_SIZE(tvout_debugfs_files), 608 minor->debugfs_root, minor); 609 } 610 611 static void sti_tvout_encoder_dpms(struct drm_encoder *encoder, int mode) 612 { 613 } 614 615 static void sti_tvout_encoder_mode_set(struct drm_encoder *encoder, 616 struct drm_display_mode *mode, 617 struct drm_display_mode *adjusted_mode) 618 { 619 } 620 621 static void sti_tvout_encoder_destroy(struct drm_encoder *encoder) 622 { 623 struct sti_tvout_encoder *sti_encoder = to_sti_tvout_encoder(encoder); 624 625 drm_encoder_cleanup(encoder); 626 kfree(sti_encoder); 627 } 628 629 static int sti_tvout_late_register(struct drm_encoder *encoder) 630 { 631 struct sti_tvout *tvout = to_sti_tvout(encoder); 632 int ret; 633 634 if (tvout->debugfs_registered) 635 return 0; 636 637 ret = tvout_debugfs_init(tvout, encoder->dev->primary); 638 if (ret) 639 return ret; 640 641 tvout->debugfs_registered = true; 642 return 0; 643 } 644 645 static void sti_tvout_early_unregister(struct drm_encoder *encoder) 646 { 647 struct sti_tvout *tvout = to_sti_tvout(encoder); 648 649 if (!tvout->debugfs_registered) 650 return; 651 652 tvout_debugfs_exit(tvout, encoder->dev->primary); 653 tvout->debugfs_registered = false; 654 } 655 656 static const struct drm_encoder_funcs sti_tvout_encoder_funcs = { 657 .destroy = sti_tvout_encoder_destroy, 658 .late_register = sti_tvout_late_register, 659 .early_unregister = sti_tvout_early_unregister, 660 }; 661 662 static void sti_dvo_encoder_enable(struct drm_encoder *encoder) 663 { 664 struct sti_tvout *tvout = to_sti_tvout(encoder); 665 666 tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode); 667 668 tvout_dvo_start(tvout, sti_crtc_is_main(encoder->crtc)); 669 } 670 671 static void sti_dvo_encoder_disable(struct drm_encoder *encoder) 672 { 673 struct sti_tvout *tvout = to_sti_tvout(encoder); 674 675 /* Reset VIP register */ 676 tvout_write(tvout, 0x0, TVO_VIP_DVO); 677 } 678 679 static const struct drm_encoder_helper_funcs sti_dvo_encoder_helper_funcs = { 680 .dpms = sti_tvout_encoder_dpms, 681 .mode_set = sti_tvout_encoder_mode_set, 682 .enable = sti_dvo_encoder_enable, 683 .disable = sti_dvo_encoder_disable, 684 }; 685 686 static struct drm_encoder * 687 sti_tvout_create_dvo_encoder(struct drm_device *dev, 688 struct sti_tvout *tvout) 689 { 690 struct sti_tvout_encoder *encoder; 691 struct drm_encoder *drm_encoder; 692 693 encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL); 694 if (!encoder) 695 return NULL; 696 697 encoder->tvout = tvout; 698 699 drm_encoder = (struct drm_encoder *)encoder; 700 701 drm_encoder->possible_crtcs = ENCODER_CRTC_MASK; 702 drm_encoder->possible_clones = 1 << 0; 703 704 drm_encoder_init(dev, drm_encoder, 705 &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_LVDS, 706 NULL); 707 708 drm_encoder_helper_add(drm_encoder, &sti_dvo_encoder_helper_funcs); 709 710 return drm_encoder; 711 } 712 713 static void sti_hda_encoder_enable(struct drm_encoder *encoder) 714 { 715 struct sti_tvout *tvout = to_sti_tvout(encoder); 716 717 tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode); 718 719 tvout_hda_start(tvout, sti_crtc_is_main(encoder->crtc)); 720 } 721 722 static void sti_hda_encoder_disable(struct drm_encoder *encoder) 723 { 724 struct sti_tvout *tvout = to_sti_tvout(encoder); 725 726 /* reset VIP register */ 727 tvout_write(tvout, 0x0, TVO_VIP_HDF); 728 729 /* power down HD DAC */ 730 tvout_write(tvout, 1, TVO_HD_DAC_CFG_OFF); 731 } 732 733 static const struct drm_encoder_helper_funcs sti_hda_encoder_helper_funcs = { 734 .dpms = sti_tvout_encoder_dpms, 735 .mode_set = sti_tvout_encoder_mode_set, 736 .commit = sti_hda_encoder_enable, 737 .disable = sti_hda_encoder_disable, 738 }; 739 740 static struct drm_encoder *sti_tvout_create_hda_encoder(struct drm_device *dev, 741 struct sti_tvout *tvout) 742 { 743 struct sti_tvout_encoder *encoder; 744 struct drm_encoder *drm_encoder; 745 746 encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL); 747 if (!encoder) 748 return NULL; 749 750 encoder->tvout = tvout; 751 752 drm_encoder = (struct drm_encoder *) encoder; 753 754 drm_encoder->possible_crtcs = ENCODER_CRTC_MASK; 755 drm_encoder->possible_clones = 1 << 0; 756 757 drm_encoder_init(dev, drm_encoder, 758 &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_DAC, NULL); 759 760 drm_encoder_helper_add(drm_encoder, &sti_hda_encoder_helper_funcs); 761 762 return drm_encoder; 763 } 764 765 static void sti_hdmi_encoder_enable(struct drm_encoder *encoder) 766 { 767 struct sti_tvout *tvout = to_sti_tvout(encoder); 768 769 tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode); 770 771 tvout_hdmi_start(tvout, sti_crtc_is_main(encoder->crtc)); 772 } 773 774 static void sti_hdmi_encoder_disable(struct drm_encoder *encoder) 775 { 776 struct sti_tvout *tvout = to_sti_tvout(encoder); 777 778 /* reset VIP register */ 779 tvout_write(tvout, 0x0, TVO_VIP_HDMI); 780 } 781 782 static const struct drm_encoder_helper_funcs sti_hdmi_encoder_helper_funcs = { 783 .dpms = sti_tvout_encoder_dpms, 784 .mode_set = sti_tvout_encoder_mode_set, 785 .commit = sti_hdmi_encoder_enable, 786 .disable = sti_hdmi_encoder_disable, 787 }; 788 789 static struct drm_encoder *sti_tvout_create_hdmi_encoder(struct drm_device *dev, 790 struct sti_tvout *tvout) 791 { 792 struct sti_tvout_encoder *encoder; 793 struct drm_encoder *drm_encoder; 794 795 encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL); 796 if (!encoder) 797 return NULL; 798 799 encoder->tvout = tvout; 800 801 drm_encoder = (struct drm_encoder *) encoder; 802 803 drm_encoder->possible_crtcs = ENCODER_CRTC_MASK; 804 drm_encoder->possible_clones = 1 << 1; 805 806 drm_encoder_init(dev, drm_encoder, 807 &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_TMDS, NULL); 808 809 drm_encoder_helper_add(drm_encoder, &sti_hdmi_encoder_helper_funcs); 810 811 return drm_encoder; 812 } 813 814 static void sti_tvout_create_encoders(struct drm_device *dev, 815 struct sti_tvout *tvout) 816 { 817 tvout->hdmi = sti_tvout_create_hdmi_encoder(dev, tvout); 818 tvout->hda = sti_tvout_create_hda_encoder(dev, tvout); 819 tvout->dvo = sti_tvout_create_dvo_encoder(dev, tvout); 820 } 821 822 static void sti_tvout_destroy_encoders(struct sti_tvout *tvout) 823 { 824 if (tvout->hdmi) 825 drm_encoder_cleanup(tvout->hdmi); 826 tvout->hdmi = NULL; 827 828 if (tvout->hda) 829 drm_encoder_cleanup(tvout->hda); 830 tvout->hda = NULL; 831 832 if (tvout->dvo) 833 drm_encoder_cleanup(tvout->dvo); 834 tvout->dvo = NULL; 835 } 836 837 static int sti_tvout_bind(struct device *dev, struct device *master, void *data) 838 { 839 struct sti_tvout *tvout = dev_get_drvdata(dev); 840 struct drm_device *drm_dev = data; 841 842 tvout->drm_dev = drm_dev; 843 844 sti_tvout_create_encoders(drm_dev, tvout); 845 846 return 0; 847 } 848 849 static void sti_tvout_unbind(struct device *dev, struct device *master, 850 void *data) 851 { 852 struct sti_tvout *tvout = dev_get_drvdata(dev); 853 854 sti_tvout_destroy_encoders(tvout); 855 } 856 857 static const struct component_ops sti_tvout_ops = { 858 .bind = sti_tvout_bind, 859 .unbind = sti_tvout_unbind, 860 }; 861 862 static int sti_tvout_probe(struct platform_device *pdev) 863 { 864 struct device *dev = &pdev->dev; 865 struct device_node *node = dev->of_node; 866 struct sti_tvout *tvout; 867 struct resource *res; 868 869 DRM_INFO("%s\n", __func__); 870 871 if (!node) 872 return -ENODEV; 873 874 tvout = devm_kzalloc(dev, sizeof(*tvout), GFP_KERNEL); 875 if (!tvout) 876 return -ENOMEM; 877 878 tvout->dev = dev; 879 880 /* get Memory ressources */ 881 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tvout-reg"); 882 if (!res) { 883 DRM_ERROR("Invalid glue resource\n"); 884 return -ENOMEM; 885 } 886 tvout->regs = devm_ioremap_nocache(dev, res->start, resource_size(res)); 887 if (!tvout->regs) 888 return -ENOMEM; 889 890 /* get reset resources */ 891 tvout->reset = devm_reset_control_get(dev, "tvout"); 892 /* take tvout out of reset */ 893 if (!IS_ERR(tvout->reset)) 894 reset_control_deassert(tvout->reset); 895 896 platform_set_drvdata(pdev, tvout); 897 898 return component_add(dev, &sti_tvout_ops); 899 } 900 901 static int sti_tvout_remove(struct platform_device *pdev) 902 { 903 component_del(&pdev->dev, &sti_tvout_ops); 904 return 0; 905 } 906 907 static const struct of_device_id tvout_of_match[] = { 908 { .compatible = "st,stih416-tvout", }, 909 { .compatible = "st,stih407-tvout", }, 910 { /* end node */ } 911 }; 912 MODULE_DEVICE_TABLE(of, tvout_of_match); 913 914 struct platform_driver sti_tvout_driver = { 915 .driver = { 916 .name = "sti-tvout", 917 .owner = THIS_MODULE, 918 .of_match_table = tvout_of_match, 919 }, 920 .probe = sti_tvout_probe, 921 .remove = sti_tvout_remove, 922 }; 923 924 MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>"); 925 MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver"); 926 MODULE_LICENSE("GPL"); 927