1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* exynos_drm_fimd.c 3 * 4 * Copyright (C) 2011 Samsung Electronics Co.Ltd 5 * Authors: 6 * Joonyoung Shim <jy0922.shim@samsung.com> 7 * Inki Dae <inki.dae@samsung.com> 8 */ 9 10 #include <linux/clk.h> 11 #include <linux/component.h> 12 #include <linux/kernel.h> 13 #include <linux/mfd/syscon.h> 14 #include <linux/of.h> 15 #include <linux/platform_device.h> 16 #include <linux/pm_runtime.h> 17 #include <linux/regmap.h> 18 19 #include <video/of_display_timing.h> 20 #include <video/of_videomode.h> 21 #include <video/samsung_fimd.h> 22 23 #include <drm/drm_blend.h> 24 #include <drm/drm_fourcc.h> 25 #include <drm/drm_framebuffer.h> 26 #include <drm/drm_vblank.h> 27 #include <drm/exynos_drm.h> 28 29 #include "exynos_drm_crtc.h" 30 #include "exynos_drm_drv.h" 31 #include "exynos_drm_fb.h" 32 #include "exynos_drm_plane.h" 33 34 /* 35 * FIMD stands for Fully Interactive Mobile Display and 36 * as a display controller, it transfers contents drawn on memory 37 * to a LCD Panel through Display Interfaces such as RGB or 38 * CPU Interface. 39 */ 40 41 #define MIN_FB_WIDTH_FOR_16WORD_BURST 128 42 43 /* position control register for hardware window 0, 2 ~ 4.*/ 44 #define VIDOSD_A(win) (VIDOSD_BASE + 0x00 + (win) * 16) 45 #define VIDOSD_B(win) (VIDOSD_BASE + 0x04 + (win) * 16) 46 /* 47 * size control register for hardware windows 0 and alpha control register 48 * for hardware windows 1 ~ 4 49 */ 50 #define VIDOSD_C(win) (VIDOSD_BASE + 0x08 + (win) * 16) 51 /* size control register for hardware windows 1 ~ 2. */ 52 #define VIDOSD_D(win) (VIDOSD_BASE + 0x0C + (win) * 16) 53 54 #define VIDWnALPHA0(win) (VIDW_ALPHA + 0x00 + (win) * 8) 55 #define VIDWnALPHA1(win) (VIDW_ALPHA + 0x04 + (win) * 8) 56 57 #define VIDWx_BUF_START(win, buf) (VIDW_BUF_START(buf) + (win) * 8) 58 #define VIDWx_BUF_START_S(win, buf) (VIDW_BUF_START_S(buf) + (win) * 8) 59 #define VIDWx_BUF_END(win, buf) (VIDW_BUF_END(buf) + (win) * 8) 60 #define VIDWx_BUF_SIZE(win, buf) (VIDW_BUF_SIZE(buf) + (win) * 4) 61 62 /* color key control register for hardware window 1 ~ 4. */ 63 #define WKEYCON0_BASE(x) ((WKEYCON0 + 0x140) + ((x - 1) * 8)) 64 /* color key value register for hardware window 1 ~ 4. */ 65 #define WKEYCON1_BASE(x) ((WKEYCON1 + 0x140) + ((x - 1) * 8)) 66 67 /* I80 trigger control register */ 68 #define TRIGCON 0x1A4 69 #define TRGMODE_ENABLE (1 << 0) 70 #define SWTRGCMD_ENABLE (1 << 1) 71 /* Exynos3250, 3472, 5260 5410, 5420 and 5422 only supported. */ 72 #define HWTRGEN_ENABLE (1 << 3) 73 #define HWTRGMASK_ENABLE (1 << 4) 74 /* Exynos3250, 3472, 5260, 5420 and 5422 only supported. */ 75 #define HWTRIGEN_PER_ENABLE (1 << 31) 76 77 /* display mode change control register except exynos4 */ 78 #define VIDOUT_CON 0x000 79 #define VIDOUT_CON_F_I80_LDI0 (0x2 << 8) 80 81 /* I80 interface control for main LDI register */ 82 #define I80IFCONFAx(x) (0x1B0 + (x) * 4) 83 #define I80IFCONFBx(x) (0x1B8 + (x) * 4) 84 #define LCD_CS_SETUP(x) ((x) << 16) 85 #define LCD_WR_SETUP(x) ((x) << 12) 86 #define LCD_WR_ACTIVE(x) ((x) << 8) 87 #define LCD_WR_HOLD(x) ((x) << 4) 88 #define I80IFEN_ENABLE (1 << 0) 89 90 /* FIMD has totally five hardware windows. */ 91 #define WINDOWS_NR 5 92 93 /* HW trigger flag on i80 panel. */ 94 #define I80_HW_TRG (1 << 1) 95 96 struct fimd_driver_data { 97 unsigned int timing_base; 98 unsigned int lcdblk_offset; 99 unsigned int lcdblk_vt_shift; 100 unsigned int lcdblk_bypass_shift; 101 unsigned int lcdblk_mic_bypass_shift; 102 unsigned int trg_type; 103 104 unsigned int has_shadowcon:1; 105 unsigned int has_clksel:1; 106 unsigned int has_limited_fmt:1; 107 unsigned int has_vidoutcon:1; 108 unsigned int has_vtsel:1; 109 unsigned int has_mic_bypass:1; 110 unsigned int has_dp_clk:1; 111 unsigned int has_hw_trigger:1; 112 unsigned int has_trigger_per_te:1; 113 unsigned int has_bgr_support:1; 114 }; 115 116 static struct fimd_driver_data s3c64xx_fimd_driver_data = { 117 .timing_base = 0x0, 118 .has_clksel = 1, 119 .has_limited_fmt = 1, 120 }; 121 122 static struct fimd_driver_data s5pv210_fimd_driver_data = { 123 .timing_base = 0x0, 124 .has_shadowcon = 1, 125 .has_clksel = 1, 126 }; 127 128 static struct fimd_driver_data exynos3_fimd_driver_data = { 129 .timing_base = 0x20000, 130 .lcdblk_offset = 0x210, 131 .lcdblk_bypass_shift = 1, 132 .has_shadowcon = 1, 133 .has_vidoutcon = 1, 134 }; 135 136 static struct fimd_driver_data exynos4_fimd_driver_data = { 137 .timing_base = 0x0, 138 .lcdblk_offset = 0x210, 139 .lcdblk_vt_shift = 10, 140 .lcdblk_bypass_shift = 1, 141 .has_shadowcon = 1, 142 .has_vtsel = 1, 143 .has_bgr_support = 1, 144 }; 145 146 static struct fimd_driver_data exynos5_fimd_driver_data = { 147 .timing_base = 0x20000, 148 .lcdblk_offset = 0x214, 149 .lcdblk_vt_shift = 24, 150 .lcdblk_bypass_shift = 15, 151 .has_shadowcon = 1, 152 .has_vidoutcon = 1, 153 .has_vtsel = 1, 154 .has_dp_clk = 1, 155 .has_bgr_support = 1, 156 }; 157 158 static struct fimd_driver_data exynos5420_fimd_driver_data = { 159 .timing_base = 0x20000, 160 .lcdblk_offset = 0x214, 161 .lcdblk_vt_shift = 24, 162 .lcdblk_bypass_shift = 15, 163 .lcdblk_mic_bypass_shift = 11, 164 .has_shadowcon = 1, 165 .has_vidoutcon = 1, 166 .has_vtsel = 1, 167 .has_mic_bypass = 1, 168 .has_dp_clk = 1, 169 .has_bgr_support = 1, 170 }; 171 172 struct fimd_context { 173 struct device *dev; 174 struct drm_device *drm_dev; 175 void *dma_priv; 176 struct exynos_drm_crtc *crtc; 177 struct exynos_drm_plane planes[WINDOWS_NR]; 178 struct exynos_drm_plane_config configs[WINDOWS_NR]; 179 struct clk *bus_clk; 180 struct clk *lcd_clk; 181 void __iomem *regs; 182 struct regmap *sysreg; 183 unsigned long irq_flags; 184 u32 vidcon0; 185 u32 vidcon1; 186 u32 vidout_con; 187 u32 i80ifcon; 188 bool i80_if; 189 bool suspended; 190 wait_queue_head_t wait_vsync_queue; 191 atomic_t wait_vsync_event; 192 atomic_t win_updated; 193 atomic_t triggering; 194 u32 clkdiv; 195 196 const struct fimd_driver_data *driver_data; 197 struct drm_encoder *encoder; 198 struct exynos_drm_clk dp_clk; 199 }; 200 201 static const struct of_device_id fimd_driver_dt_match[] = { 202 { .compatible = "samsung,s3c6400-fimd", 203 .data = &s3c64xx_fimd_driver_data }, 204 { .compatible = "samsung,s5pv210-fimd", 205 .data = &s5pv210_fimd_driver_data }, 206 { .compatible = "samsung,exynos3250-fimd", 207 .data = &exynos3_fimd_driver_data }, 208 { .compatible = "samsung,exynos4210-fimd", 209 .data = &exynos4_fimd_driver_data }, 210 { .compatible = "samsung,exynos5250-fimd", 211 .data = &exynos5_fimd_driver_data }, 212 { .compatible = "samsung,exynos5420-fimd", 213 .data = &exynos5420_fimd_driver_data }, 214 {}, 215 }; 216 MODULE_DEVICE_TABLE(of, fimd_driver_dt_match); 217 218 static const enum drm_plane_type fimd_win_types[WINDOWS_NR] = { 219 DRM_PLANE_TYPE_PRIMARY, 220 DRM_PLANE_TYPE_OVERLAY, 221 DRM_PLANE_TYPE_OVERLAY, 222 DRM_PLANE_TYPE_OVERLAY, 223 DRM_PLANE_TYPE_CURSOR, 224 }; 225 226 static const uint32_t fimd_formats[] = { 227 DRM_FORMAT_C8, 228 DRM_FORMAT_XRGB1555, 229 DRM_FORMAT_RGB565, 230 DRM_FORMAT_XRGB8888, 231 DRM_FORMAT_ARGB8888, 232 }; 233 234 static const uint32_t fimd_extended_formats[] = { 235 DRM_FORMAT_C8, 236 DRM_FORMAT_XRGB1555, 237 DRM_FORMAT_XBGR1555, 238 DRM_FORMAT_RGB565, 239 DRM_FORMAT_BGR565, 240 DRM_FORMAT_XRGB8888, 241 DRM_FORMAT_XBGR8888, 242 DRM_FORMAT_ARGB8888, 243 DRM_FORMAT_ABGR8888, 244 }; 245 246 static const unsigned int capabilities[WINDOWS_NR] = { 247 0, 248 EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND, 249 EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND, 250 EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND, 251 EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND, 252 }; 253 254 static inline void fimd_set_bits(struct fimd_context *ctx, u32 reg, u32 mask, 255 u32 val) 256 { 257 val = (val & mask) | (readl(ctx->regs + reg) & ~mask); 258 writel(val, ctx->regs + reg); 259 } 260 261 static int fimd_enable_vblank(struct exynos_drm_crtc *crtc) 262 { 263 struct fimd_context *ctx = crtc->ctx; 264 u32 val; 265 266 if (ctx->suspended) 267 return -EPERM; 268 269 if (!test_and_set_bit(0, &ctx->irq_flags)) { 270 val = readl(ctx->regs + VIDINTCON0); 271 272 val |= VIDINTCON0_INT_ENABLE; 273 274 if (ctx->i80_if) { 275 val |= VIDINTCON0_INT_I80IFDONE; 276 val |= VIDINTCON0_INT_SYSMAINCON; 277 val &= ~VIDINTCON0_INT_SYSSUBCON; 278 } else { 279 val |= VIDINTCON0_INT_FRAME; 280 281 val &= ~VIDINTCON0_FRAMESEL0_MASK; 282 val |= VIDINTCON0_FRAMESEL0_FRONTPORCH; 283 val &= ~VIDINTCON0_FRAMESEL1_MASK; 284 val |= VIDINTCON0_FRAMESEL1_NONE; 285 } 286 287 writel(val, ctx->regs + VIDINTCON0); 288 } 289 290 return 0; 291 } 292 293 static void fimd_disable_vblank(struct exynos_drm_crtc *crtc) 294 { 295 struct fimd_context *ctx = crtc->ctx; 296 u32 val; 297 298 if (ctx->suspended) 299 return; 300 301 if (test_and_clear_bit(0, &ctx->irq_flags)) { 302 val = readl(ctx->regs + VIDINTCON0); 303 304 val &= ~VIDINTCON0_INT_ENABLE; 305 306 if (ctx->i80_if) { 307 val &= ~VIDINTCON0_INT_I80IFDONE; 308 val &= ~VIDINTCON0_INT_SYSMAINCON; 309 val &= ~VIDINTCON0_INT_SYSSUBCON; 310 } else 311 val &= ~VIDINTCON0_INT_FRAME; 312 313 writel(val, ctx->regs + VIDINTCON0); 314 } 315 } 316 317 static void fimd_wait_for_vblank(struct exynos_drm_crtc *crtc) 318 { 319 struct fimd_context *ctx = crtc->ctx; 320 321 if (ctx->suspended) 322 return; 323 324 atomic_set(&ctx->wait_vsync_event, 1); 325 326 /* 327 * wait for FIMD to signal VSYNC interrupt or return after 328 * timeout which is set to 50ms (refresh rate of 20). 329 */ 330 if (!wait_event_timeout(ctx->wait_vsync_queue, 331 !atomic_read(&ctx->wait_vsync_event), 332 HZ/20)) 333 DRM_DEV_DEBUG_KMS(ctx->dev, "vblank wait timed out.\n"); 334 } 335 336 static void fimd_enable_video_output(struct fimd_context *ctx, unsigned int win, 337 bool enable) 338 { 339 u32 val = readl(ctx->regs + WINCON(win)); 340 341 if (enable) 342 val |= WINCONx_ENWIN; 343 else 344 val &= ~WINCONx_ENWIN; 345 346 writel(val, ctx->regs + WINCON(win)); 347 } 348 349 static void fimd_enable_shadow_channel_path(struct fimd_context *ctx, 350 unsigned int win, 351 bool enable) 352 { 353 u32 val = readl(ctx->regs + SHADOWCON); 354 355 if (enable) 356 val |= SHADOWCON_CHx_ENABLE(win); 357 else 358 val &= ~SHADOWCON_CHx_ENABLE(win); 359 360 writel(val, ctx->regs + SHADOWCON); 361 } 362 363 static int fimd_clear_channels(struct exynos_drm_crtc *crtc) 364 { 365 struct fimd_context *ctx = crtc->ctx; 366 unsigned int win, ch_enabled = 0; 367 int ret; 368 369 /* Hardware is in unknown state, so ensure it gets enabled properly */ 370 ret = pm_runtime_resume_and_get(ctx->dev); 371 if (ret < 0) { 372 dev_err(ctx->dev, "failed to enable FIMD device.\n"); 373 return ret; 374 } 375 376 clk_prepare_enable(ctx->bus_clk); 377 clk_prepare_enable(ctx->lcd_clk); 378 379 /* Check if any channel is enabled. */ 380 for (win = 0; win < WINDOWS_NR; win++) { 381 u32 val = readl(ctx->regs + WINCON(win)); 382 383 if (val & WINCONx_ENWIN) { 384 fimd_enable_video_output(ctx, win, false); 385 386 if (ctx->driver_data->has_shadowcon) 387 fimd_enable_shadow_channel_path(ctx, win, 388 false); 389 390 ch_enabled = 1; 391 } 392 } 393 394 /* Wait for vsync, as disable channel takes effect at next vsync */ 395 if (ch_enabled) { 396 ctx->suspended = false; 397 398 fimd_enable_vblank(ctx->crtc); 399 fimd_wait_for_vblank(ctx->crtc); 400 fimd_disable_vblank(ctx->crtc); 401 402 ctx->suspended = true; 403 } 404 405 clk_disable_unprepare(ctx->lcd_clk); 406 clk_disable_unprepare(ctx->bus_clk); 407 408 pm_runtime_put(ctx->dev); 409 410 return 0; 411 } 412 413 414 static int fimd_atomic_check(struct exynos_drm_crtc *crtc, 415 struct drm_crtc_state *state) 416 { 417 struct drm_display_mode *mode = &state->adjusted_mode; 418 struct fimd_context *ctx = crtc->ctx; 419 unsigned long ideal_clk, lcd_rate; 420 u32 clkdiv; 421 422 if (mode->clock == 0) { 423 DRM_DEV_ERROR(ctx->dev, "Mode has zero clock value.\n"); 424 return -EINVAL; 425 } 426 427 ideal_clk = mode->clock * 1000; 428 429 if (ctx->i80_if) { 430 /* 431 * The frame done interrupt should be occurred prior to the 432 * next TE signal. 433 */ 434 ideal_clk *= 2; 435 } 436 437 lcd_rate = clk_get_rate(ctx->lcd_clk); 438 if (2 * lcd_rate < ideal_clk) { 439 DRM_DEV_ERROR(ctx->dev, 440 "sclk_fimd clock too low(%lu) for requested pixel clock(%lu)\n", 441 lcd_rate, ideal_clk); 442 return -EINVAL; 443 } 444 445 /* Find the clock divider value that gets us closest to ideal_clk */ 446 clkdiv = DIV_ROUND_CLOSEST(lcd_rate, ideal_clk); 447 if (clkdiv >= 0x200) { 448 DRM_DEV_ERROR(ctx->dev, "requested pixel clock(%lu) too low\n", 449 ideal_clk); 450 return -EINVAL; 451 } 452 453 ctx->clkdiv = (clkdiv < 0x100) ? clkdiv : 0xff; 454 455 return 0; 456 } 457 458 static void fimd_setup_trigger(struct fimd_context *ctx) 459 { 460 void __iomem *timing_base = ctx->regs + ctx->driver_data->timing_base; 461 u32 trg_type = ctx->driver_data->trg_type; 462 u32 val = readl(timing_base + TRIGCON); 463 464 val &= ~(TRGMODE_ENABLE); 465 466 if (trg_type == I80_HW_TRG) { 467 if (ctx->driver_data->has_hw_trigger) 468 val |= HWTRGEN_ENABLE | HWTRGMASK_ENABLE; 469 if (ctx->driver_data->has_trigger_per_te) 470 val |= HWTRIGEN_PER_ENABLE; 471 } else { 472 val |= TRGMODE_ENABLE; 473 } 474 475 writel(val, timing_base + TRIGCON); 476 } 477 478 static void fimd_commit(struct exynos_drm_crtc *crtc) 479 { 480 struct fimd_context *ctx = crtc->ctx; 481 struct drm_display_mode *mode = &crtc->base.state->adjusted_mode; 482 const struct fimd_driver_data *driver_data = ctx->driver_data; 483 void __iomem *timing_base = ctx->regs + driver_data->timing_base; 484 u32 val; 485 486 if (ctx->suspended) 487 return; 488 489 /* nothing to do if we haven't set the mode yet */ 490 if (mode->htotal == 0 || mode->vtotal == 0) 491 return; 492 493 if (ctx->i80_if) { 494 val = ctx->i80ifcon | I80IFEN_ENABLE; 495 writel(val, timing_base + I80IFCONFAx(0)); 496 497 /* disable auto frame rate */ 498 writel(0, timing_base + I80IFCONFBx(0)); 499 500 /* set video type selection to I80 interface */ 501 if (driver_data->has_vtsel && ctx->sysreg && 502 regmap_update_bits(ctx->sysreg, 503 driver_data->lcdblk_offset, 504 0x3 << driver_data->lcdblk_vt_shift, 505 0x1 << driver_data->lcdblk_vt_shift)) { 506 DRM_DEV_ERROR(ctx->dev, 507 "Failed to update sysreg for I80 i/f.\n"); 508 return; 509 } 510 } else { 511 int vsync_len, vbpd, vfpd, hsync_len, hbpd, hfpd; 512 u32 vidcon1; 513 514 /* setup polarity values */ 515 vidcon1 = ctx->vidcon1; 516 if (mode->flags & DRM_MODE_FLAG_NVSYNC) 517 vidcon1 |= VIDCON1_INV_VSYNC; 518 if (mode->flags & DRM_MODE_FLAG_NHSYNC) 519 vidcon1 |= VIDCON1_INV_HSYNC; 520 writel(vidcon1, ctx->regs + driver_data->timing_base + VIDCON1); 521 522 /* setup vertical timing values. */ 523 vsync_len = mode->crtc_vsync_end - mode->crtc_vsync_start; 524 vbpd = mode->crtc_vtotal - mode->crtc_vsync_end; 525 vfpd = mode->crtc_vsync_start - mode->crtc_vdisplay; 526 527 val = VIDTCON0_VBPD(vbpd - 1) | 528 VIDTCON0_VFPD(vfpd - 1) | 529 VIDTCON0_VSPW(vsync_len - 1); 530 writel(val, ctx->regs + driver_data->timing_base + VIDTCON0); 531 532 /* setup horizontal timing values. */ 533 hsync_len = mode->crtc_hsync_end - mode->crtc_hsync_start; 534 hbpd = mode->crtc_htotal - mode->crtc_hsync_end; 535 hfpd = mode->crtc_hsync_start - mode->crtc_hdisplay; 536 537 val = VIDTCON1_HBPD(hbpd - 1) | 538 VIDTCON1_HFPD(hfpd - 1) | 539 VIDTCON1_HSPW(hsync_len - 1); 540 writel(val, ctx->regs + driver_data->timing_base + VIDTCON1); 541 } 542 543 if (driver_data->has_vidoutcon) 544 writel(ctx->vidout_con, timing_base + VIDOUT_CON); 545 546 /* set bypass selection */ 547 if (ctx->sysreg && regmap_update_bits(ctx->sysreg, 548 driver_data->lcdblk_offset, 549 0x1 << driver_data->lcdblk_bypass_shift, 550 0x1 << driver_data->lcdblk_bypass_shift)) { 551 DRM_DEV_ERROR(ctx->dev, 552 "Failed to update sysreg for bypass setting.\n"); 553 return; 554 } 555 556 /* TODO: When MIC is enabled for display path, the lcdblk_mic_bypass 557 * bit should be cleared. 558 */ 559 if (driver_data->has_mic_bypass && ctx->sysreg && 560 regmap_update_bits(ctx->sysreg, 561 driver_data->lcdblk_offset, 562 0x1 << driver_data->lcdblk_mic_bypass_shift, 563 0x1 << driver_data->lcdblk_mic_bypass_shift)) { 564 DRM_DEV_ERROR(ctx->dev, 565 "Failed to update sysreg for bypass mic.\n"); 566 return; 567 } 568 569 /* setup horizontal and vertical display size. */ 570 val = VIDTCON2_LINEVAL(mode->vdisplay - 1) | 571 VIDTCON2_HOZVAL(mode->hdisplay - 1) | 572 VIDTCON2_LINEVAL_E(mode->vdisplay - 1) | 573 VIDTCON2_HOZVAL_E(mode->hdisplay - 1); 574 writel(val, ctx->regs + driver_data->timing_base + VIDTCON2); 575 576 fimd_setup_trigger(ctx); 577 578 /* 579 * fields of register with prefix '_F' would be updated 580 * at vsync(same as dma start) 581 */ 582 val = ctx->vidcon0; 583 val |= VIDCON0_ENVID | VIDCON0_ENVID_F; 584 585 if (ctx->driver_data->has_clksel) 586 val |= VIDCON0_CLKSEL_LCD; 587 588 if (ctx->clkdiv > 1) 589 val |= VIDCON0_CLKVAL_F(ctx->clkdiv - 1) | VIDCON0_CLKDIR; 590 591 writel(val, ctx->regs + VIDCON0); 592 } 593 594 static void fimd_win_set_bldeq(struct fimd_context *ctx, unsigned int win, 595 unsigned int alpha, unsigned int pixel_alpha) 596 { 597 u32 mask = BLENDEQ_A_FUNC_F(0xf) | BLENDEQ_B_FUNC_F(0xf); 598 u32 val = 0; 599 600 switch (pixel_alpha) { 601 case DRM_MODE_BLEND_PIXEL_NONE: 602 case DRM_MODE_BLEND_COVERAGE: 603 val |= BLENDEQ_A_FUNC_F(BLENDEQ_ALPHA_A); 604 val |= BLENDEQ_B_FUNC_F(BLENDEQ_ONE_MINUS_ALPHA_A); 605 break; 606 case DRM_MODE_BLEND_PREMULTI: 607 default: 608 if (alpha != DRM_BLEND_ALPHA_OPAQUE) { 609 val |= BLENDEQ_A_FUNC_F(BLENDEQ_ALPHA0); 610 val |= BLENDEQ_B_FUNC_F(BLENDEQ_ONE_MINUS_ALPHA_A); 611 } else { 612 val |= BLENDEQ_A_FUNC_F(BLENDEQ_ONE); 613 val |= BLENDEQ_B_FUNC_F(BLENDEQ_ONE_MINUS_ALPHA_A); 614 } 615 break; 616 } 617 fimd_set_bits(ctx, BLENDEQx(win), mask, val); 618 } 619 620 static void fimd_win_set_bldmod(struct fimd_context *ctx, unsigned int win, 621 unsigned int alpha, unsigned int pixel_alpha) 622 { 623 u32 win_alpha_l = (alpha >> 8) & 0xf; 624 u32 win_alpha_h = alpha >> 12; 625 u32 val = 0; 626 627 switch (pixel_alpha) { 628 case DRM_MODE_BLEND_PIXEL_NONE: 629 break; 630 case DRM_MODE_BLEND_COVERAGE: 631 case DRM_MODE_BLEND_PREMULTI: 632 default: 633 val |= WINCON1_ALPHA_SEL; 634 val |= WINCON1_BLD_PIX; 635 val |= WINCON1_ALPHA_MUL; 636 break; 637 } 638 fimd_set_bits(ctx, WINCON(win), WINCONx_BLEND_MODE_MASK, val); 639 640 /* OSD alpha */ 641 val = VIDISD14C_ALPHA0_R(win_alpha_h) | 642 VIDISD14C_ALPHA0_G(win_alpha_h) | 643 VIDISD14C_ALPHA0_B(win_alpha_h) | 644 VIDISD14C_ALPHA1_R(0x0) | 645 VIDISD14C_ALPHA1_G(0x0) | 646 VIDISD14C_ALPHA1_B(0x0); 647 writel(val, ctx->regs + VIDOSD_C(win)); 648 649 val = VIDW_ALPHA_R(win_alpha_l) | VIDW_ALPHA_G(win_alpha_l) | 650 VIDW_ALPHA_B(win_alpha_l); 651 writel(val, ctx->regs + VIDWnALPHA0(win)); 652 653 val = VIDW_ALPHA_R(0x0) | VIDW_ALPHA_G(0x0) | 654 VIDW_ALPHA_B(0x0); 655 writel(val, ctx->regs + VIDWnALPHA1(win)); 656 657 fimd_set_bits(ctx, BLENDCON, BLENDCON_NEW_MASK, 658 BLENDCON_NEW_8BIT_ALPHA_VALUE); 659 } 660 661 static void fimd_win_set_pixfmt(struct fimd_context *ctx, unsigned int win, 662 struct drm_framebuffer *fb, int width) 663 { 664 struct exynos_drm_plane *plane = &ctx->planes[win]; 665 struct exynos_drm_plane_state *state = 666 to_exynos_plane_state(plane->base.state); 667 uint32_t pixel_format = fb->format->format; 668 unsigned int alpha = state->base.alpha; 669 u32 val = WINCONx_ENWIN; 670 unsigned int pixel_alpha; 671 672 if (fb->format->has_alpha) 673 pixel_alpha = state->base.pixel_blend_mode; 674 else 675 pixel_alpha = DRM_MODE_BLEND_PIXEL_NONE; 676 677 /* 678 * In case of s3c64xx, window 0 doesn't support alpha channel. 679 * So the request format is ARGB8888 then change it to XRGB8888. 680 */ 681 if (ctx->driver_data->has_limited_fmt && !win) { 682 if (pixel_format == DRM_FORMAT_ARGB8888) 683 pixel_format = DRM_FORMAT_XRGB8888; 684 } 685 686 switch (pixel_format) { 687 case DRM_FORMAT_C8: 688 val |= WINCON0_BPPMODE_8BPP_PALETTE; 689 val |= WINCONx_BURSTLEN_8WORD; 690 val |= WINCONx_BYTSWP; 691 break; 692 case DRM_FORMAT_XRGB1555: 693 case DRM_FORMAT_XBGR1555: 694 val |= WINCON0_BPPMODE_16BPP_1555; 695 val |= WINCONx_HAWSWP; 696 val |= WINCONx_BURSTLEN_16WORD; 697 break; 698 case DRM_FORMAT_RGB565: 699 case DRM_FORMAT_BGR565: 700 val |= WINCON0_BPPMODE_16BPP_565; 701 val |= WINCONx_HAWSWP; 702 val |= WINCONx_BURSTLEN_16WORD; 703 break; 704 case DRM_FORMAT_XRGB8888: 705 case DRM_FORMAT_XBGR8888: 706 val |= WINCON0_BPPMODE_24BPP_888; 707 val |= WINCONx_WSWP; 708 val |= WINCONx_BURSTLEN_16WORD; 709 break; 710 case DRM_FORMAT_ARGB8888: 711 case DRM_FORMAT_ABGR8888: 712 default: 713 val |= WINCON1_BPPMODE_25BPP_A1888; 714 val |= WINCONx_WSWP; 715 val |= WINCONx_BURSTLEN_16WORD; 716 break; 717 } 718 719 switch (pixel_format) { 720 case DRM_FORMAT_XBGR1555: 721 case DRM_FORMAT_XBGR8888: 722 case DRM_FORMAT_ABGR8888: 723 case DRM_FORMAT_BGR565: 724 writel(WIN_RGB_ORDER_REVERSE, ctx->regs + WIN_RGB_ORDER(win)); 725 break; 726 default: 727 writel(WIN_RGB_ORDER_FORWARD, ctx->regs + WIN_RGB_ORDER(win)); 728 break; 729 } 730 731 /* 732 * Setting dma-burst to 16Word causes permanent tearing for very small 733 * buffers, e.g. cursor buffer. Burst Mode switching which based on 734 * plane size is not recommended as plane size varies alot towards the 735 * end of the screen and rapid movement causes unstable DMA, but it is 736 * still better to change dma-burst than displaying garbage. 737 */ 738 739 if (width < MIN_FB_WIDTH_FOR_16WORD_BURST) { 740 val &= ~WINCONx_BURSTLEN_MASK; 741 val |= WINCONx_BURSTLEN_4WORD; 742 } 743 fimd_set_bits(ctx, WINCON(win), ~WINCONx_BLEND_MODE_MASK, val); 744 745 /* hardware window 0 doesn't support alpha channel. */ 746 if (win != 0) { 747 fimd_win_set_bldmod(ctx, win, alpha, pixel_alpha); 748 fimd_win_set_bldeq(ctx, win, alpha, pixel_alpha); 749 } 750 } 751 752 static void fimd_win_set_colkey(struct fimd_context *ctx, unsigned int win) 753 { 754 unsigned int keycon0 = 0, keycon1 = 0; 755 756 keycon0 = ~(WxKEYCON0_KEYBL_EN | WxKEYCON0_KEYEN_F | 757 WxKEYCON0_DIRCON) | WxKEYCON0_COMPKEY(0); 758 759 keycon1 = WxKEYCON1_COLVAL(0xffffffff); 760 761 writel(keycon0, ctx->regs + WKEYCON0_BASE(win)); 762 writel(keycon1, ctx->regs + WKEYCON1_BASE(win)); 763 } 764 765 /** 766 * fimd_shadow_protect_win() - disable updating values from shadow registers at vsync 767 * 768 * @ctx: local driver data 769 * @win: window to protect registers for 770 * @protect: 1 to protect (disable updates) 771 */ 772 static void fimd_shadow_protect_win(struct fimd_context *ctx, 773 unsigned int win, bool protect) 774 { 775 u32 reg, bits, val; 776 777 /* 778 * SHADOWCON/PRTCON register is used for enabling timing. 779 * 780 * for example, once only width value of a register is set, 781 * if the dma is started then fimd hardware could malfunction so 782 * with protect window setting, the register fields with prefix '_F' 783 * wouldn't be updated at vsync also but updated once unprotect window 784 * is set. 785 */ 786 787 if (ctx->driver_data->has_shadowcon) { 788 reg = SHADOWCON; 789 bits = SHADOWCON_WINx_PROTECT(win); 790 } else { 791 reg = PRTCON; 792 bits = PRTCON_PROTECT; 793 } 794 795 val = readl(ctx->regs + reg); 796 if (protect) 797 val |= bits; 798 else 799 val &= ~bits; 800 writel(val, ctx->regs + reg); 801 } 802 803 static void fimd_atomic_begin(struct exynos_drm_crtc *crtc) 804 { 805 struct fimd_context *ctx = crtc->ctx; 806 int i; 807 808 if (ctx->suspended) 809 return; 810 811 for (i = 0; i < WINDOWS_NR; i++) 812 fimd_shadow_protect_win(ctx, i, true); 813 } 814 815 static void fimd_atomic_flush(struct exynos_drm_crtc *crtc) 816 { 817 struct fimd_context *ctx = crtc->ctx; 818 int i; 819 820 if (ctx->suspended) 821 return; 822 823 for (i = 0; i < WINDOWS_NR; i++) 824 fimd_shadow_protect_win(ctx, i, false); 825 826 exynos_crtc_handle_event(crtc); 827 } 828 829 static void fimd_update_plane(struct exynos_drm_crtc *crtc, 830 struct exynos_drm_plane *plane) 831 { 832 struct exynos_drm_plane_state *state = 833 to_exynos_plane_state(plane->base.state); 834 struct fimd_context *ctx = crtc->ctx; 835 struct drm_framebuffer *fb = state->base.fb; 836 dma_addr_t dma_addr; 837 unsigned long val, size, offset; 838 unsigned int last_x, last_y, buf_offsize, line_size; 839 unsigned int win = plane->index; 840 unsigned int cpp = fb->format->cpp[0]; 841 unsigned int pitch = fb->pitches[0]; 842 843 if (ctx->suspended) 844 return; 845 846 offset = state->src.x * cpp; 847 offset += state->src.y * pitch; 848 849 /* buffer start address */ 850 dma_addr = exynos_drm_fb_dma_addr(fb, 0) + offset; 851 val = (unsigned long)dma_addr; 852 writel(val, ctx->regs + VIDWx_BUF_START(win, 0)); 853 854 /* buffer end address */ 855 size = pitch * state->crtc.h; 856 val = (unsigned long)(dma_addr + size); 857 writel(val, ctx->regs + VIDWx_BUF_END(win, 0)); 858 859 DRM_DEV_DEBUG_KMS(ctx->dev, 860 "start addr = 0x%lx, end addr = 0x%lx, size = 0x%lx\n", 861 (unsigned long)dma_addr, val, size); 862 DRM_DEV_DEBUG_KMS(ctx->dev, "ovl_width = %d, ovl_height = %d\n", 863 state->crtc.w, state->crtc.h); 864 865 /* buffer size */ 866 buf_offsize = pitch - (state->crtc.w * cpp); 867 line_size = state->crtc.w * cpp; 868 val = VIDW_BUF_SIZE_OFFSET(buf_offsize) | 869 VIDW_BUF_SIZE_PAGEWIDTH(line_size) | 870 VIDW_BUF_SIZE_OFFSET_E(buf_offsize) | 871 VIDW_BUF_SIZE_PAGEWIDTH_E(line_size); 872 writel(val, ctx->regs + VIDWx_BUF_SIZE(win, 0)); 873 874 /* OSD position */ 875 val = VIDOSDxA_TOPLEFT_X(state->crtc.x) | 876 VIDOSDxA_TOPLEFT_Y(state->crtc.y) | 877 VIDOSDxA_TOPLEFT_X_E(state->crtc.x) | 878 VIDOSDxA_TOPLEFT_Y_E(state->crtc.y); 879 writel(val, ctx->regs + VIDOSD_A(win)); 880 881 last_x = state->crtc.x + state->crtc.w; 882 if (last_x) 883 last_x--; 884 last_y = state->crtc.y + state->crtc.h; 885 if (last_y) 886 last_y--; 887 888 val = VIDOSDxB_BOTRIGHT_X(last_x) | VIDOSDxB_BOTRIGHT_Y(last_y) | 889 VIDOSDxB_BOTRIGHT_X_E(last_x) | VIDOSDxB_BOTRIGHT_Y_E(last_y); 890 891 writel(val, ctx->regs + VIDOSD_B(win)); 892 893 DRM_DEV_DEBUG_KMS(ctx->dev, 894 "osd pos: tx = %d, ty = %d, bx = %d, by = %d\n", 895 state->crtc.x, state->crtc.y, last_x, last_y); 896 897 /* OSD size */ 898 if (win != 3 && win != 4) { 899 u32 offset = VIDOSD_D(win); 900 if (win == 0) 901 offset = VIDOSD_C(win); 902 val = state->crtc.w * state->crtc.h; 903 writel(val, ctx->regs + offset); 904 905 DRM_DEV_DEBUG_KMS(ctx->dev, "osd size = 0x%x\n", 906 (unsigned int)val); 907 } 908 909 fimd_win_set_pixfmt(ctx, win, fb, state->src.w); 910 911 /* hardware window 0 doesn't support color key. */ 912 if (win != 0) 913 fimd_win_set_colkey(ctx, win); 914 915 fimd_enable_video_output(ctx, win, true); 916 917 if (ctx->driver_data->has_shadowcon) 918 fimd_enable_shadow_channel_path(ctx, win, true); 919 920 if (ctx->i80_if) 921 atomic_set(&ctx->win_updated, 1); 922 } 923 924 static void fimd_disable_plane(struct exynos_drm_crtc *crtc, 925 struct exynos_drm_plane *plane) 926 { 927 struct fimd_context *ctx = crtc->ctx; 928 unsigned int win = plane->index; 929 930 if (ctx->suspended) 931 return; 932 933 fimd_enable_video_output(ctx, win, false); 934 935 if (ctx->driver_data->has_shadowcon) 936 fimd_enable_shadow_channel_path(ctx, win, false); 937 } 938 939 static void fimd_atomic_enable(struct exynos_drm_crtc *crtc) 940 { 941 struct fimd_context *ctx = crtc->ctx; 942 943 if (!ctx->suspended) 944 return; 945 946 ctx->suspended = false; 947 948 if (pm_runtime_resume_and_get(ctx->dev) < 0) { 949 dev_warn(ctx->dev, "failed to enable FIMD device.\n"); 950 return; 951 } 952 953 /* if vblank was enabled status, enable it again. */ 954 if (test_and_clear_bit(0, &ctx->irq_flags)) 955 fimd_enable_vblank(ctx->crtc); 956 957 fimd_commit(ctx->crtc); 958 } 959 960 static void fimd_atomic_disable(struct exynos_drm_crtc *crtc) 961 { 962 struct fimd_context *ctx = crtc->ctx; 963 int i; 964 965 if (ctx->suspended) 966 return; 967 968 /* 969 * We need to make sure that all windows are disabled before we 970 * suspend that connector. Otherwise we might try to scan from 971 * a destroyed buffer later. 972 */ 973 for (i = 0; i < WINDOWS_NR; i++) 974 fimd_disable_plane(crtc, &ctx->planes[i]); 975 976 fimd_enable_vblank(crtc); 977 fimd_wait_for_vblank(crtc); 978 fimd_disable_vblank(crtc); 979 980 writel(0, ctx->regs + VIDCON0); 981 982 pm_runtime_put_sync(ctx->dev); 983 ctx->suspended = true; 984 } 985 986 static void fimd_trigger(struct device *dev) 987 { 988 struct fimd_context *ctx = dev_get_drvdata(dev); 989 const struct fimd_driver_data *driver_data = ctx->driver_data; 990 void *timing_base = ctx->regs + driver_data->timing_base; 991 u32 reg; 992 993 /* 994 * Skips triggering if in triggering state, because multiple triggering 995 * requests can cause panel reset. 996 */ 997 if (atomic_read(&ctx->triggering)) 998 return; 999 1000 /* Enters triggering mode */ 1001 atomic_set(&ctx->triggering, 1); 1002 1003 reg = readl(timing_base + TRIGCON); 1004 reg |= (TRGMODE_ENABLE | SWTRGCMD_ENABLE); 1005 writel(reg, timing_base + TRIGCON); 1006 1007 /* 1008 * Exits triggering mode if vblank is not enabled yet, because when the 1009 * VIDINTCON0 register is not set, it can not exit from triggering mode. 1010 */ 1011 if (!test_bit(0, &ctx->irq_flags)) 1012 atomic_set(&ctx->triggering, 0); 1013 } 1014 1015 static void fimd_te_handler(struct exynos_drm_crtc *crtc) 1016 { 1017 struct fimd_context *ctx = crtc->ctx; 1018 u32 trg_type = ctx->driver_data->trg_type; 1019 1020 /* Checks the crtc is detached already from encoder */ 1021 if (!ctx->drm_dev) 1022 return; 1023 1024 if (trg_type == I80_HW_TRG) 1025 goto out; 1026 1027 /* 1028 * If there is a page flip request, triggers and handles the page flip 1029 * event so that current fb can be updated into panel GRAM. 1030 */ 1031 if (atomic_add_unless(&ctx->win_updated, -1, 0)) 1032 fimd_trigger(ctx->dev); 1033 1034 out: 1035 /* Wakes up vsync event queue */ 1036 if (atomic_read(&ctx->wait_vsync_event)) { 1037 atomic_set(&ctx->wait_vsync_event, 0); 1038 wake_up(&ctx->wait_vsync_queue); 1039 } 1040 1041 if (test_bit(0, &ctx->irq_flags)) 1042 drm_crtc_handle_vblank(&ctx->crtc->base); 1043 } 1044 1045 static void fimd_dp_clock_enable(struct exynos_drm_clk *clk, bool enable) 1046 { 1047 struct fimd_context *ctx = container_of(clk, struct fimd_context, 1048 dp_clk); 1049 u32 val = enable ? DP_MIE_CLK_DP_ENABLE : DP_MIE_CLK_DISABLE; 1050 writel(val, ctx->regs + DP_MIE_CLKCON); 1051 } 1052 1053 static const struct exynos_drm_crtc_ops fimd_crtc_ops = { 1054 .atomic_enable = fimd_atomic_enable, 1055 .atomic_disable = fimd_atomic_disable, 1056 .enable_vblank = fimd_enable_vblank, 1057 .disable_vblank = fimd_disable_vblank, 1058 .atomic_begin = fimd_atomic_begin, 1059 .update_plane = fimd_update_plane, 1060 .disable_plane = fimd_disable_plane, 1061 .atomic_flush = fimd_atomic_flush, 1062 .atomic_check = fimd_atomic_check, 1063 .te_handler = fimd_te_handler, 1064 }; 1065 1066 static irqreturn_t fimd_irq_handler(int irq, void *dev_id) 1067 { 1068 struct fimd_context *ctx = (struct fimd_context *)dev_id; 1069 u32 val, clear_bit; 1070 1071 val = readl(ctx->regs + VIDINTCON1); 1072 1073 clear_bit = ctx->i80_if ? VIDINTCON1_INT_I80 : VIDINTCON1_INT_FRAME; 1074 if (val & clear_bit) 1075 writel(clear_bit, ctx->regs + VIDINTCON1); 1076 1077 /* check the crtc is detached already from encoder */ 1078 if (!ctx->drm_dev) 1079 goto out; 1080 1081 if (!ctx->i80_if) 1082 drm_crtc_handle_vblank(&ctx->crtc->base); 1083 1084 if (ctx->i80_if) { 1085 /* Exits triggering mode */ 1086 atomic_set(&ctx->triggering, 0); 1087 } else { 1088 /* set wait vsync event to zero and wake up queue. */ 1089 if (atomic_read(&ctx->wait_vsync_event)) { 1090 atomic_set(&ctx->wait_vsync_event, 0); 1091 wake_up(&ctx->wait_vsync_queue); 1092 } 1093 } 1094 1095 out: 1096 return IRQ_HANDLED; 1097 } 1098 1099 static int fimd_bind(struct device *dev, struct device *master, void *data) 1100 { 1101 struct fimd_context *ctx = dev_get_drvdata(dev); 1102 struct drm_device *drm_dev = data; 1103 struct exynos_drm_plane *exynos_plane; 1104 unsigned int i; 1105 int ret; 1106 1107 ctx->drm_dev = drm_dev; 1108 1109 for (i = 0; i < WINDOWS_NR; i++) { 1110 if (ctx->driver_data->has_bgr_support) { 1111 ctx->configs[i].pixel_formats = fimd_extended_formats; 1112 ctx->configs[i].num_pixel_formats = ARRAY_SIZE(fimd_extended_formats); 1113 } else { 1114 ctx->configs[i].pixel_formats = fimd_formats; 1115 ctx->configs[i].num_pixel_formats = ARRAY_SIZE(fimd_formats); 1116 } 1117 1118 ctx->configs[i].zpos = i; 1119 ctx->configs[i].type = fimd_win_types[i]; 1120 ctx->configs[i].capabilities = capabilities[i]; 1121 ret = exynos_plane_init(drm_dev, &ctx->planes[i], i, 1122 &ctx->configs[i]); 1123 if (ret) 1124 return ret; 1125 } 1126 1127 exynos_plane = &ctx->planes[DEFAULT_WIN]; 1128 ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base, 1129 EXYNOS_DISPLAY_TYPE_LCD, &fimd_crtc_ops, ctx); 1130 if (IS_ERR(ctx->crtc)) 1131 return PTR_ERR(ctx->crtc); 1132 1133 if (ctx->driver_data->has_dp_clk) { 1134 ctx->dp_clk.enable = fimd_dp_clock_enable; 1135 ctx->crtc->pipe_clk = &ctx->dp_clk; 1136 } 1137 1138 if (ctx->encoder) 1139 exynos_dpi_bind(drm_dev, ctx->encoder); 1140 1141 if (is_drm_iommu_supported(drm_dev)) { 1142 int ret; 1143 1144 ret = fimd_clear_channels(ctx->crtc); 1145 if (ret < 0) 1146 return ret; 1147 } 1148 1149 return exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); 1150 } 1151 1152 static void fimd_unbind(struct device *dev, struct device *master, 1153 void *data) 1154 { 1155 struct fimd_context *ctx = dev_get_drvdata(dev); 1156 1157 fimd_atomic_disable(ctx->crtc); 1158 1159 exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev, &ctx->dma_priv); 1160 1161 if (ctx->encoder) 1162 exynos_dpi_remove(ctx->encoder); 1163 } 1164 1165 static const struct component_ops fimd_component_ops = { 1166 .bind = fimd_bind, 1167 .unbind = fimd_unbind, 1168 }; 1169 1170 static int fimd_probe(struct platform_device *pdev) 1171 { 1172 struct device *dev = &pdev->dev; 1173 struct fimd_context *ctx; 1174 struct device_node *i80_if_timings; 1175 int ret; 1176 1177 if (!dev->of_node) 1178 return -ENODEV; 1179 1180 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 1181 if (!ctx) 1182 return -ENOMEM; 1183 1184 ctx->dev = dev; 1185 ctx->suspended = true; 1186 ctx->driver_data = of_device_get_match_data(dev); 1187 1188 if (of_property_read_bool(dev->of_node, "samsung,invert-vden")) 1189 ctx->vidcon1 |= VIDCON1_INV_VDEN; 1190 if (of_property_read_bool(dev->of_node, "samsung,invert-vclk")) 1191 ctx->vidcon1 |= VIDCON1_INV_VCLK; 1192 1193 i80_if_timings = of_get_child_by_name(dev->of_node, "i80-if-timings"); 1194 if (i80_if_timings) { 1195 u32 val; 1196 1197 ctx->i80_if = true; 1198 1199 if (ctx->driver_data->has_vidoutcon) 1200 ctx->vidout_con |= VIDOUT_CON_F_I80_LDI0; 1201 else 1202 ctx->vidcon0 |= VIDCON0_VIDOUT_I80_LDI0; 1203 /* 1204 * The user manual describes that this "DSI_EN" bit is required 1205 * to enable I80 24-bit data interface. 1206 */ 1207 ctx->vidcon0 |= VIDCON0_DSI_EN; 1208 1209 if (of_property_read_u32(i80_if_timings, "cs-setup", &val)) 1210 val = 0; 1211 ctx->i80ifcon = LCD_CS_SETUP(val); 1212 if (of_property_read_u32(i80_if_timings, "wr-setup", &val)) 1213 val = 0; 1214 ctx->i80ifcon |= LCD_WR_SETUP(val); 1215 if (of_property_read_u32(i80_if_timings, "wr-active", &val)) 1216 val = 1; 1217 ctx->i80ifcon |= LCD_WR_ACTIVE(val); 1218 if (of_property_read_u32(i80_if_timings, "wr-hold", &val)) 1219 val = 0; 1220 ctx->i80ifcon |= LCD_WR_HOLD(val); 1221 } 1222 of_node_put(i80_if_timings); 1223 1224 ctx->sysreg = syscon_regmap_lookup_by_phandle(dev->of_node, 1225 "samsung,sysreg"); 1226 if (IS_ERR(ctx->sysreg)) { 1227 dev_warn(dev, "failed to get system register.\n"); 1228 ctx->sysreg = NULL; 1229 } 1230 1231 ctx->bus_clk = devm_clk_get(dev, "fimd"); 1232 if (IS_ERR(ctx->bus_clk)) { 1233 dev_err(dev, "failed to get bus clock\n"); 1234 return PTR_ERR(ctx->bus_clk); 1235 } 1236 1237 ctx->lcd_clk = devm_clk_get(dev, "sclk_fimd"); 1238 if (IS_ERR(ctx->lcd_clk)) { 1239 dev_err(dev, "failed to get lcd clock\n"); 1240 return PTR_ERR(ctx->lcd_clk); 1241 } 1242 1243 ctx->regs = devm_platform_ioremap_resource(pdev, 0); 1244 if (IS_ERR(ctx->regs)) 1245 return PTR_ERR(ctx->regs); 1246 1247 ret = platform_get_irq_byname(pdev, ctx->i80_if ? "lcd_sys" : "vsync"); 1248 if (ret < 0) 1249 return ret; 1250 1251 ret = devm_request_irq(dev, ret, fimd_irq_handler, 0, "drm_fimd", ctx); 1252 if (ret) { 1253 dev_err(dev, "irq request failed.\n"); 1254 return ret; 1255 } 1256 1257 init_waitqueue_head(&ctx->wait_vsync_queue); 1258 atomic_set(&ctx->wait_vsync_event, 0); 1259 1260 platform_set_drvdata(pdev, ctx); 1261 1262 ctx->encoder = exynos_dpi_probe(dev); 1263 if (IS_ERR(ctx->encoder)) 1264 return PTR_ERR(ctx->encoder); 1265 1266 pm_runtime_enable(dev); 1267 1268 ret = component_add(dev, &fimd_component_ops); 1269 if (ret) 1270 goto err_disable_pm_runtime; 1271 1272 return ret; 1273 1274 err_disable_pm_runtime: 1275 pm_runtime_disable(dev); 1276 1277 return ret; 1278 } 1279 1280 static void fimd_remove(struct platform_device *pdev) 1281 { 1282 pm_runtime_disable(&pdev->dev); 1283 1284 component_del(&pdev->dev, &fimd_component_ops); 1285 } 1286 1287 static int exynos_fimd_suspend(struct device *dev) 1288 { 1289 struct fimd_context *ctx = dev_get_drvdata(dev); 1290 1291 clk_disable_unprepare(ctx->lcd_clk); 1292 clk_disable_unprepare(ctx->bus_clk); 1293 1294 return 0; 1295 } 1296 1297 static int exynos_fimd_resume(struct device *dev) 1298 { 1299 struct fimd_context *ctx = dev_get_drvdata(dev); 1300 int ret; 1301 1302 ret = clk_prepare_enable(ctx->bus_clk); 1303 if (ret < 0) { 1304 DRM_DEV_ERROR(dev, 1305 "Failed to prepare_enable the bus clk [%d]\n", 1306 ret); 1307 return ret; 1308 } 1309 1310 ret = clk_prepare_enable(ctx->lcd_clk); 1311 if (ret < 0) { 1312 DRM_DEV_ERROR(dev, 1313 "Failed to prepare_enable the lcd clk [%d]\n", 1314 ret); 1315 return ret; 1316 } 1317 1318 return 0; 1319 } 1320 1321 static DEFINE_RUNTIME_DEV_PM_OPS(exynos_fimd_pm_ops, exynos_fimd_suspend, 1322 exynos_fimd_resume, NULL); 1323 1324 struct platform_driver fimd_driver = { 1325 .probe = fimd_probe, 1326 .remove_new = fimd_remove, 1327 .driver = { 1328 .name = "exynos4-fb", 1329 .owner = THIS_MODULE, 1330 .pm = pm_ptr(&exynos_fimd_pm_ops), 1331 .of_match_table = fimd_driver_dt_match, 1332 }, 1333 }; 1334