1// SPDX-License-Identifier: GPL-2.0-only 2/* drivers/gpu/drm/exynos5433_drm_decon.c 3 * 4 * Copyright (C) 2015 Samsung Electronics Co.Ltd 5 * Authors: 6 * Joonyoung Shim <jy0922.shim@samsung.com> 7 * Hyungwon Hwang <human.hwang@samsung.com> 8 */ 9 10#include <linux/clk.h> 11#include <linux/component.h> 12#include <linux/iopoll.h> 13#include <linux/irq.h> 14#include <linux/mfd/syscon.h> 15#include <linux/of.h> 16#include <linux/platform_device.h> 17#include <linux/pm_runtime.h> 18#include <linux/regmap.h> 19 20#include <drm/drm_blend.h> 21#include <drm/drm_fourcc.h> 22#include <drm/drm_framebuffer.h> 23#include <drm/drm_vblank.h> 24 25#include "exynos_drm_crtc.h" 26#include "exynos_drm_drv.h" 27#include "exynos_drm_fb.h" 28#include "exynos_drm_plane.h" 29#include "regs-decon5433.h" 30 31#define DSD_CFG_MUX 0x1004 32#define DSD_CFG_MUX_TE_UNMASK_GLOBAL BIT(13) 33 34#define WINDOWS_NR 5 35#define PRIMARY_WIN 2 36#define CURSON_WIN 4 37 38#define MIN_FB_WIDTH_FOR_16WORD_BURST 128 39 40#define I80_HW_TRG (1 << 0) 41#define IFTYPE_HDMI (1 << 1) 42 43static const char * const decon_clks_name[] = { 44 "pclk", 45 "aclk_decon", 46 "aclk_smmu_decon0x", 47 "aclk_xiu_decon0x", 48 "pclk_smmu_decon0x", 49 "aclk_smmu_decon1x", 50 "aclk_xiu_decon1x", 51 "pclk_smmu_decon1x", 52 "sclk_decon_vclk", 53 "sclk_decon_eclk", 54}; 55 56struct decon_context { 57 struct device *dev; 58 struct drm_device *drm_dev; 59 void *dma_priv; 60 struct exynos_drm_crtc *crtc; 61 struct exynos_drm_plane planes[WINDOWS_NR]; 62 struct exynos_drm_plane_config configs[WINDOWS_NR]; 63 void __iomem *addr; 64 struct regmap *sysreg; 65 struct clk *clks[ARRAY_SIZE(decon_clks_name)]; 66 unsigned int irq; 67 unsigned int irq_vsync; 68 unsigned int irq_lcd_sys; 69 unsigned int te_irq; 70 unsigned long out_type; 71 int first_win; 72 spinlock_t vblank_lock; 73 u32 frame_id; 74}; 75 76static const uint32_t decon_formats[] = { 77 DRM_FORMAT_XRGB1555, 78 DRM_FORMAT_RGB565, 79 DRM_FORMAT_XRGB8888, 80 DRM_FORMAT_ARGB8888, 81}; 82 83static const enum drm_plane_type decon_win_types[WINDOWS_NR] = { 84 [PRIMARY_WIN] = DRM_PLANE_TYPE_PRIMARY, 85 [CURSON_WIN] = DRM_PLANE_TYPE_CURSOR, 86}; 87 88static const unsigned int capabilities[WINDOWS_NR] = { 89 0, 90 EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND, 91 EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND, 92 EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND, 93 EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND, 94}; 95 96static inline void decon_set_bits(struct decon_context *ctx, u32 reg, u32 mask, 97 u32 val) 98{ 99 val = (val & mask) | (readl(ctx->addr + reg) & ~mask); 100 writel(val, ctx->addr + reg); 101} 102 103static int decon_enable_vblank(struct exynos_drm_crtc *crtc) 104{ 105 struct decon_context *ctx = crtc->ctx; 106 u32 val; 107 108 val = VIDINTCON0_INTEN; 109 if (crtc->i80_mode) 110 val |= VIDINTCON0_FRAMEDONE; 111 else 112 val |= VIDINTCON0_INTFRMEN | VIDINTCON0_FRAMESEL_FP; 113 114 writel(val, ctx->addr + DECON_VIDINTCON0); 115 116 enable_irq(ctx->irq); 117 if (!(ctx->out_type & I80_HW_TRG)) 118 enable_irq(ctx->te_irq); 119 120 return 0; 121} 122 123static void decon_disable_vblank(struct exynos_drm_crtc *crtc) 124{ 125 struct decon_context *ctx = crtc->ctx; 126 127 if (!(ctx->out_type & I80_HW_TRG)) 128 disable_irq_nosync(ctx->te_irq); 129 disable_irq_nosync(ctx->irq); 130 131 writel(0, ctx->addr + DECON_VIDINTCON0); 132} 133 134/* return number of starts/ends of frame transmissions since reset */ 135static u32 decon_get_frame_count(struct decon_context *ctx, bool end) 136{ 137 u32 frm, pfrm, status, cnt = 2; 138 139 /* To get consistent result repeat read until frame id is stable. 140 * Usually the loop will be executed once, in rare cases when the loop 141 * is executed at frame change time 2nd pass will be needed. 142 */ 143 frm = readl(ctx->addr + DECON_CRFMID); 144 do { 145 status = readl(ctx->addr + DECON_VIDCON1); 146 pfrm = frm; 147 frm = readl(ctx->addr + DECON_CRFMID); 148 } while (frm != pfrm && --cnt); 149 150 /* CRFMID is incremented on BPORCH in case of I80 and on VSYNC in case 151 * of RGB, it should be taken into account. 152 */ 153 if (!frm) 154 return 0; 155 156 switch (status & (VIDCON1_VSTATUS_MASK | VIDCON1_I80_ACTIVE)) { 157 case VIDCON1_VSTATUS_VS: 158 if (!(ctx->crtc->i80_mode)) 159 --frm; 160 break; 161 case VIDCON1_VSTATUS_BP: 162 --frm; 163 break; 164 case VIDCON1_I80_ACTIVE: 165 case VIDCON1_VSTATUS_AC: 166 if (end) 167 --frm; 168 break; 169 default: 170 break; 171 } 172 173 return frm; 174} 175 176static void decon_setup_trigger(struct decon_context *ctx) 177{ 178 if (!ctx->crtc->i80_mode && !(ctx->out_type & I80_HW_TRG)) 179 return; 180 181 if (!(ctx->out_type & I80_HW_TRG)) { 182 writel(TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F | 183 TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN, 184 ctx->addr + DECON_TRIGCON); 185 return; 186 } 187 188 writel(TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F | TRIGCON_HWTRIGMASK 189 | TRIGCON_HWTRIGEN, ctx->addr + DECON_TRIGCON); 190 191 if (regmap_update_bits(ctx->sysreg, DSD_CFG_MUX, 192 DSD_CFG_MUX_TE_UNMASK_GLOBAL, ~0)) 193 DRM_DEV_ERROR(ctx->dev, "Cannot update sysreg.\n"); 194} 195 196static void decon_commit(struct exynos_drm_crtc *crtc) 197{ 198 struct decon_context *ctx = crtc->ctx; 199 struct drm_display_mode *m = &crtc->base.mode; 200 bool interlaced = false; 201 u32 val; 202 203 if (ctx->out_type & IFTYPE_HDMI) { 204 m->crtc_hsync_start = m->crtc_hdisplay + 10; 205 m->crtc_hsync_end = m->crtc_htotal - 92; 206 m->crtc_vsync_start = m->crtc_vdisplay + 1; 207 m->crtc_vsync_end = m->crtc_vsync_start + 1; 208 if (m->flags & DRM_MODE_FLAG_INTERLACE) 209 interlaced = true; 210 } 211 212 decon_setup_trigger(ctx); 213 214 /* lcd on and use command if */ 215 val = VIDOUT_LCD_ON; 216 if (interlaced) 217 val |= VIDOUT_INTERLACE_EN_F; 218 if (crtc->i80_mode) { 219 val |= VIDOUT_COMMAND_IF; 220 } else { 221 val |= VIDOUT_RGB_IF; 222 } 223 224 writel(val, ctx->addr + DECON_VIDOUTCON0); 225 226 if (interlaced) 227 val = VIDTCON2_LINEVAL(m->vdisplay / 2 - 1) | 228 VIDTCON2_HOZVAL(m->hdisplay - 1); 229 else 230 val = VIDTCON2_LINEVAL(m->vdisplay - 1) | 231 VIDTCON2_HOZVAL(m->hdisplay - 1); 232 writel(val, ctx->addr + DECON_VIDTCON2); 233 234 if (!crtc->i80_mode) { 235 int vbp = m->crtc_vtotal - m->crtc_vsync_end; 236 int vfp = m->crtc_vsync_start - m->crtc_vdisplay; 237 238 if (interlaced) 239 vbp = vbp / 2 - 1; 240 val = VIDTCON00_VBPD_F(vbp - 1) | VIDTCON00_VFPD_F(vfp - 1); 241 writel(val, ctx->addr + DECON_VIDTCON00); 242 243 val = VIDTCON01_VSPW_F( 244 m->crtc_vsync_end - m->crtc_vsync_start - 1); 245 writel(val, ctx->addr + DECON_VIDTCON01); 246 247 val = VIDTCON10_HBPD_F( 248 m->crtc_htotal - m->crtc_hsync_end - 1) | 249 VIDTCON10_HFPD_F( 250 m->crtc_hsync_start - m->crtc_hdisplay - 1); 251 writel(val, ctx->addr + DECON_VIDTCON10); 252 253 val = VIDTCON11_HSPW_F( 254 m->crtc_hsync_end - m->crtc_hsync_start - 1); 255 writel(val, ctx->addr + DECON_VIDTCON11); 256 } 257 258 /* enable output and display signal */ 259 decon_set_bits(ctx, DECON_VIDCON0, VIDCON0_ENVID | VIDCON0_ENVID_F, ~0); 260 261 decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0); 262} 263 264static void decon_win_set_bldeq(struct decon_context *ctx, unsigned int win, 265 unsigned int alpha, unsigned int pixel_alpha) 266{ 267 u32 mask = BLENDERQ_A_FUNC_F(0xf) | BLENDERQ_B_FUNC_F(0xf); 268 u32 val = 0; 269 270 switch (pixel_alpha) { 271 case DRM_MODE_BLEND_PIXEL_NONE: 272 case DRM_MODE_BLEND_COVERAGE: 273 val |= BLENDERQ_A_FUNC_F(BLENDERQ_ALPHA_A); 274 val |= BLENDERQ_B_FUNC_F(BLENDERQ_ONE_MINUS_ALPHA_A); 275 break; 276 case DRM_MODE_BLEND_PREMULTI: 277 default: 278 if (alpha != DRM_BLEND_ALPHA_OPAQUE) { 279 val |= BLENDERQ_A_FUNC_F(BLENDERQ_ALPHA0); 280 val |= BLENDERQ_B_FUNC_F(BLENDERQ_ONE_MINUS_ALPHA_A); 281 } else { 282 val |= BLENDERQ_A_FUNC_F(BLENDERQ_ONE); 283 val |= BLENDERQ_B_FUNC_F(BLENDERQ_ONE_MINUS_ALPHA_A); 284 } 285 break; 286 } 287 decon_set_bits(ctx, DECON_BLENDERQx(win), mask, val); 288} 289 290static void decon_win_set_bldmod(struct decon_context *ctx, unsigned int win, 291 unsigned int alpha, unsigned int pixel_alpha) 292{ 293 u32 win_alpha = alpha >> 8; 294 u32 val = 0; 295 296 switch (pixel_alpha) { 297 case DRM_MODE_BLEND_PIXEL_NONE: 298 break; 299 case DRM_MODE_BLEND_COVERAGE: 300 case DRM_MODE_BLEND_PREMULTI: 301 default: 302 val |= WINCONx_ALPHA_SEL_F; 303 val |= WINCONx_BLD_PIX_F; 304 val |= WINCONx_ALPHA_MUL_F; 305 break; 306 } 307 decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_BLEND_MODE_MASK, val); 308 309 if (alpha != DRM_BLEND_ALPHA_OPAQUE) { 310 val = VIDOSD_Wx_ALPHA_R_F(win_alpha) | 311 VIDOSD_Wx_ALPHA_G_F(win_alpha) | 312 VIDOSD_Wx_ALPHA_B_F(win_alpha); 313 decon_set_bits(ctx, DECON_VIDOSDxC(win), 314 VIDOSDxC_ALPHA0_RGB_MASK, val); 315 decon_set_bits(ctx, DECON_BLENDCON, BLEND_NEW, BLEND_NEW); 316 } 317} 318 319static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned int win, 320 struct drm_framebuffer *fb) 321{ 322 struct exynos_drm_plane *plane = &ctx->planes[win]; 323 struct exynos_drm_plane_state *state = 324 to_exynos_plane_state(plane->base.state); 325 unsigned int alpha = state->base.alpha; 326 unsigned int pixel_alpha; 327 unsigned long val; 328 329 if (fb->format->has_alpha) 330 pixel_alpha = state->base.pixel_blend_mode; 331 else 332 pixel_alpha = DRM_MODE_BLEND_PIXEL_NONE; 333 334 val = readl(ctx->addr + DECON_WINCONx(win)); 335 val &= WINCONx_ENWIN_F; 336 337 switch (fb->format->format) { 338 case DRM_FORMAT_XRGB1555: 339 val |= WINCONx_BPPMODE_16BPP_I1555; 340 val |= WINCONx_HAWSWP_F; 341 val |= WINCONx_BURSTLEN_16WORD; 342 break; 343 case DRM_FORMAT_RGB565: 344 val |= WINCONx_BPPMODE_16BPP_565; 345 val |= WINCONx_HAWSWP_F; 346 val |= WINCONx_BURSTLEN_16WORD; 347 break; 348 case DRM_FORMAT_XRGB8888: 349 val |= WINCONx_BPPMODE_24BPP_888; 350 val |= WINCONx_WSWP_F; 351 val |= WINCONx_BURSTLEN_16WORD; 352 break; 353 case DRM_FORMAT_ARGB8888: 354 default: 355 val |= WINCONx_BPPMODE_32BPP_A8888; 356 val |= WINCONx_WSWP_F; 357 val |= WINCONx_BURSTLEN_16WORD; 358 break; 359 } 360 361 DRM_DEV_DEBUG_KMS(ctx->dev, "cpp = %u\n", fb->format->cpp[0]); 362 363 /* 364 * In case of exynos, setting dma-burst to 16Word causes permanent 365 * tearing for very small buffers, e.g. cursor buffer. Burst Mode 366 * switching which is based on plane size is not recommended as 367 * plane size varies a lot towards the end of the screen and rapid 368 * movement causes unstable DMA which results into iommu crash/tear. 369 */ 370 371 if (fb->width < MIN_FB_WIDTH_FOR_16WORD_BURST) { 372 val &= ~WINCONx_BURSTLEN_MASK; 373 val |= WINCONx_BURSTLEN_8WORD; 374 } 375 decon_set_bits(ctx, DECON_WINCONx(win), ~WINCONx_BLEND_MODE_MASK, val); 376 377 if (win > 0) { 378 decon_win_set_bldmod(ctx, win, alpha, pixel_alpha); 379 decon_win_set_bldeq(ctx, win, alpha, pixel_alpha); 380 } 381} 382 383static void decon_shadow_protect(struct decon_context *ctx, bool protect) 384{ 385 decon_set_bits(ctx, DECON_SHADOWCON, SHADOWCON_PROTECT_MASK, 386 protect ? ~0 : 0); 387} 388 389static void decon_atomic_begin(struct exynos_drm_crtc *crtc) 390{ 391 struct decon_context *ctx = crtc->ctx; 392 393 decon_shadow_protect(ctx, true); 394} 395 396#define BIT_VAL(x, e, s) (((x) & ((1 << ((e) - (s) + 1)) - 1)) << (s)) 397#define COORDINATE_X(x) BIT_VAL((x), 23, 12) 398#define COORDINATE_Y(x) BIT_VAL((x), 11, 0) 399 400static void decon_update_plane(struct exynos_drm_crtc *crtc, 401 struct exynos_drm_plane *plane) 402{ 403 struct exynos_drm_plane_state *state = 404 to_exynos_plane_state(plane->base.state); 405 struct decon_context *ctx = crtc->ctx; 406 struct drm_framebuffer *fb = state->base.fb; 407 unsigned int win = plane->index; 408 unsigned int cpp = fb->format->cpp[0]; 409 unsigned int pitch = fb->pitches[0]; 410 dma_addr_t dma_addr = exynos_drm_fb_dma_addr(fb, 0); 411 u32 val; 412 413 if (crtc->base.mode.flags & DRM_MODE_FLAG_INTERLACE) { 414 val = COORDINATE_X(state->crtc.x) | 415 COORDINATE_Y(state->crtc.y / 2); 416 writel(val, ctx->addr + DECON_VIDOSDxA(win)); 417 418 val = COORDINATE_X(state->crtc.x + state->crtc.w - 1) | 419 COORDINATE_Y((state->crtc.y + state->crtc.h) / 2 - 1); 420 writel(val, ctx->addr + DECON_VIDOSDxB(win)); 421 } else { 422 val = COORDINATE_X(state->crtc.x) | COORDINATE_Y(state->crtc.y); 423 writel(val, ctx->addr + DECON_VIDOSDxA(win)); 424 425 val = COORDINATE_X(state->crtc.x + state->crtc.w - 1) | 426 COORDINATE_Y(state->crtc.y + state->crtc.h - 1); 427 writel(val, ctx->addr + DECON_VIDOSDxB(win)); 428 } 429 430 val = VIDOSD_Wx_ALPHA_R_F(0xff) | VIDOSD_Wx_ALPHA_G_F(0xff) | 431 VIDOSD_Wx_ALPHA_B_F(0xff); 432 writel(val, ctx->addr + DECON_VIDOSDxC(win)); 433 434 val = VIDOSD_Wx_ALPHA_R_F(0x0) | VIDOSD_Wx_ALPHA_G_F(0x0) | 435 VIDOSD_Wx_ALPHA_B_F(0x0); 436 writel(val, ctx->addr + DECON_VIDOSDxD(win)); 437 438 writel(dma_addr, ctx->addr + DECON_VIDW0xADD0B0(win)); 439 440 val = dma_addr + pitch * state->src.h; 441 writel(val, ctx->addr + DECON_VIDW0xADD1B0(win)); 442 443 if (!(ctx->out_type & IFTYPE_HDMI)) 444 val = BIT_VAL(pitch - state->crtc.w * cpp, 27, 14) 445 | BIT_VAL(state->crtc.w * cpp, 13, 0); 446 else 447 val = BIT_VAL(pitch - state->crtc.w * cpp, 29, 15) 448 | BIT_VAL(state->crtc.w * cpp, 14, 0); 449 writel(val, ctx->addr + DECON_VIDW0xADD2(win)); 450 451 decon_win_set_pixfmt(ctx, win, fb); 452 453 /* window enable */ 454 decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, ~0); 455} 456 457static void decon_disable_plane(struct exynos_drm_crtc *crtc, 458 struct exynos_drm_plane *plane) 459{ 460 struct decon_context *ctx = crtc->ctx; 461 unsigned int win = plane->index; 462 463 decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0); 464} 465 466static void decon_atomic_flush(struct exynos_drm_crtc *crtc) 467{ 468 struct decon_context *ctx = crtc->ctx; 469 unsigned long flags; 470 471 spin_lock_irqsave(&ctx->vblank_lock, flags); 472 473 decon_shadow_protect(ctx, false); 474 475 decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0); 476 477 ctx->frame_id = decon_get_frame_count(ctx, true); 478 479 exynos_crtc_handle_event(crtc); 480 481 spin_unlock_irqrestore(&ctx->vblank_lock, flags); 482} 483 484static void decon_swreset(struct decon_context *ctx) 485{ 486 unsigned long flags; 487 u32 val; 488 int ret; 489 490 writel(0, ctx->addr + DECON_VIDCON0); 491 readl_poll_timeout(ctx->addr + DECON_VIDCON0, val, 492 ~val & VIDCON0_STOP_STATUS, 12, 20000); 493 494 writel(VIDCON0_SWRESET, ctx->addr + DECON_VIDCON0); 495 ret = readl_poll_timeout(ctx->addr + DECON_VIDCON0, val, 496 ~val & VIDCON0_SWRESET, 12, 20000); 497 498 WARN(ret < 0, "failed to software reset DECON\n"); 499 500 spin_lock_irqsave(&ctx->vblank_lock, flags); 501 ctx->frame_id = 0; 502 spin_unlock_irqrestore(&ctx->vblank_lock, flags); 503 504 if (!(ctx->out_type & IFTYPE_HDMI)) 505 return; 506 507 writel(VIDCON0_CLKVALUP | VIDCON0_VLCKFREE, ctx->addr + DECON_VIDCON0); 508 decon_set_bits(ctx, DECON_CMU, 509 CMU_CLKGAGE_MODE_SFR_F | CMU_CLKGAGE_MODE_MEM_F, ~0); 510 writel(VIDCON1_VCLK_RUN_VDEN_DISABLE, ctx->addr + DECON_VIDCON1); 511 writel(CRCCTRL_CRCEN | CRCCTRL_CRCSTART_F | CRCCTRL_CRCCLKEN, 512 ctx->addr + DECON_CRCCTRL); 513} 514 515static void decon_atomic_enable(struct exynos_drm_crtc *crtc) 516{ 517 struct decon_context *ctx = crtc->ctx; 518 int ret; 519 520 ret = pm_runtime_resume_and_get(ctx->dev); 521 if (ret < 0) { 522 DRM_DEV_ERROR(ctx->dev, "failed to enable DECON device.\n"); 523 return; 524 } 525 526 exynos_drm_pipe_clk_enable(crtc, true); 527 528 decon_swreset(ctx); 529 530 decon_commit(ctx->crtc); 531} 532 533static void decon_atomic_disable(struct exynos_drm_crtc *crtc) 534{ 535 struct decon_context *ctx = crtc->ctx; 536 int i; 537 538 if (!(ctx->out_type & I80_HW_TRG)) 539 synchronize_irq(ctx->te_irq); 540 synchronize_irq(ctx->irq); 541 542 /* 543 * We need to make sure that all windows are disabled before we 544 * suspend that connector. Otherwise we might try to scan from 545 * a destroyed buffer later. 546 */ 547 for (i = ctx->first_win; i < WINDOWS_NR; i++) 548 decon_disable_plane(crtc, &ctx->planes[i]); 549 550 decon_swreset(ctx); 551 552 exynos_drm_pipe_clk_enable(crtc, false); 553 554 pm_runtime_put_sync(ctx->dev); 555} 556 557static irqreturn_t decon_te_irq_handler(int irq, void *dev_id) 558{ 559 struct decon_context *ctx = dev_id; 560 561 decon_set_bits(ctx, DECON_TRIGCON, TRIGCON_SWTRIGCMD, ~0); 562 563 return IRQ_HANDLED; 564} 565 566static void decon_clear_channels(struct exynos_drm_crtc *crtc) 567{ 568 struct decon_context *ctx = crtc->ctx; 569 int win, i, ret; 570 571 for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) { 572 ret = clk_prepare_enable(ctx->clks[i]); 573 if (ret < 0) 574 goto err; 575 } 576 577 decon_shadow_protect(ctx, true); 578 for (win = 0; win < WINDOWS_NR; win++) 579 decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0); 580 decon_shadow_protect(ctx, false); 581 582 decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0); 583 584 /* TODO: wait for possible vsync */ 585 msleep(50); 586 587err: 588 while (--i >= 0) 589 clk_disable_unprepare(ctx->clks[i]); 590} 591 592static enum drm_mode_status decon_mode_valid(struct exynos_drm_crtc *crtc, 593 const struct drm_display_mode *mode) 594{ 595 struct decon_context *ctx = crtc->ctx; 596 597 ctx->irq = crtc->i80_mode ? ctx->irq_lcd_sys : ctx->irq_vsync; 598 599 if (ctx->irq) 600 return MODE_OK; 601 602 dev_info(ctx->dev, "Sink requires %s mode, but appropriate interrupt is not provided.\n", 603 crtc->i80_mode ? "command" : "video"); 604 605 return MODE_BAD; 606} 607 608static const struct exynos_drm_crtc_ops decon_crtc_ops = { 609 .atomic_enable = decon_atomic_enable, 610 .atomic_disable = decon_atomic_disable, 611 .enable_vblank = decon_enable_vblank, 612 .disable_vblank = decon_disable_vblank, 613 .atomic_begin = decon_atomic_begin, 614 .update_plane = decon_update_plane, 615 .disable_plane = decon_disable_plane, 616 .mode_valid = decon_mode_valid, 617 .atomic_flush = decon_atomic_flush, 618}; 619 620static int decon_bind(struct device *dev, struct device *master, void *data) 621{ 622 struct decon_context *ctx = dev_get_drvdata(dev); 623 struct drm_device *drm_dev = data; 624 struct exynos_drm_plane *exynos_plane; 625 enum exynos_drm_output_type out_type; 626 unsigned int win; 627 int ret; 628 629 ctx->drm_dev = drm_dev; 630 631 for (win = ctx->first_win; win < WINDOWS_NR; win++) { 632 ctx->configs[win].pixel_formats = decon_formats; 633 ctx->configs[win].num_pixel_formats = ARRAY_SIZE(decon_formats); 634 ctx->configs[win].zpos = win - ctx->first_win; 635 ctx->configs[win].type = decon_win_types[win]; 636 ctx->configs[win].capabilities = capabilities[win]; 637 638 ret = exynos_plane_init(drm_dev, &ctx->planes[win], win, 639 &ctx->configs[win]); 640 if (ret) 641 return ret; 642 } 643 644 exynos_plane = &ctx->planes[PRIMARY_WIN]; 645 out_type = (ctx->out_type & IFTYPE_HDMI) ? EXYNOS_DISPLAY_TYPE_HDMI 646 : EXYNOS_DISPLAY_TYPE_LCD; 647 ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base, 648 out_type, &decon_crtc_ops, ctx); 649 if (IS_ERR(ctx->crtc)) 650 return PTR_ERR(ctx->crtc); 651 652 decon_clear_channels(ctx->crtc); 653 654 return exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); 655} 656 657static void decon_unbind(struct device *dev, struct device *master, void *data) 658{ 659 struct decon_context *ctx = dev_get_drvdata(dev); 660 661 decon_atomic_disable(ctx->crtc); 662 663 /* detach this sub driver from iommu mapping if supported. */ 664 exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev, &ctx->dma_priv); 665} 666 667static const struct component_ops decon_component_ops = { 668 .bind = decon_bind, 669 .unbind = decon_unbind, 670}; 671 672static void decon_handle_vblank(struct decon_context *ctx) 673{ 674 u32 frm; 675 676 spin_lock(&ctx->vblank_lock); 677 678 frm = decon_get_frame_count(ctx, true); 679 680 if (frm != ctx->frame_id) { 681 /* handle only if incremented, take care of wrap-around */ 682 if ((s32)(frm - ctx->frame_id) > 0) 683 drm_crtc_handle_vblank(&ctx->crtc->base); 684 ctx->frame_id = frm; 685 } 686 687 spin_unlock(&ctx->vblank_lock); 688} 689 690static irqreturn_t decon_irq_handler(int irq, void *dev_id) 691{ 692 struct decon_context *ctx = dev_id; 693 u32 val; 694 695 val = readl(ctx->addr + DECON_VIDINTCON1); 696 val &= VIDINTCON1_INTFRMDONEPEND | VIDINTCON1_INTFRMPEND; 697 698 if (val) { 699 writel(val, ctx->addr + DECON_VIDINTCON1); 700 if (ctx->out_type & IFTYPE_HDMI) { 701 val = readl(ctx->addr + DECON_VIDOUTCON0); 702 val &= VIDOUT_INTERLACE_EN_F | VIDOUT_INTERLACE_FIELD_F; 703 if (val == 704 (VIDOUT_INTERLACE_EN_F | VIDOUT_INTERLACE_FIELD_F)) 705 return IRQ_HANDLED; 706 } 707 decon_handle_vblank(ctx); 708 } 709 710 return IRQ_HANDLED; 711} 712 713static int exynos5433_decon_suspend(struct device *dev) 714{ 715 struct decon_context *ctx = dev_get_drvdata(dev); 716 int i = ARRAY_SIZE(decon_clks_name); 717 718 while (--i >= 0) 719 clk_disable_unprepare(ctx->clks[i]); 720 721 return 0; 722} 723 724static int exynos5433_decon_resume(struct device *dev) 725{ 726 struct decon_context *ctx = dev_get_drvdata(dev); 727 int i, ret; 728 729 for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) { 730 ret = clk_prepare_enable(ctx->clks[i]); 731 if (ret < 0) 732 goto err; 733 } 734 735 return 0; 736 737err: 738 while (--i >= 0) 739 clk_disable_unprepare(ctx->clks[i]); 740 741 return ret; 742} 743 744static DEFINE_RUNTIME_DEV_PM_OPS(exynos5433_decon_pm_ops, 745 exynos5433_decon_suspend, 746 exynos5433_decon_resume, NULL); 747 748static const struct of_device_id exynos5433_decon_driver_dt_match[] = { 749 { 750 .compatible = "samsung,exynos5433-decon", 751 .data = (void *)I80_HW_TRG 752 }, 753 { 754 .compatible = "samsung,exynos5433-decon-tv", 755 .data = (void *)(I80_HW_TRG | IFTYPE_HDMI) 756 }, 757 {}, 758}; 759MODULE_DEVICE_TABLE(of, exynos5433_decon_driver_dt_match); 760 761static int decon_conf_irq(struct decon_context *ctx, const char *name, 762 irq_handler_t handler, unsigned long int flags) 763{ 764 struct platform_device *pdev = to_platform_device(ctx->dev); 765 int ret, irq = platform_get_irq_byname(pdev, name); 766 767 if (irq < 0) { 768 switch (irq) { 769 case -EPROBE_DEFER: 770 return irq; 771 case -ENODATA: 772 case -ENXIO: 773 return 0; 774 default: 775 dev_err(ctx->dev, "IRQ %s get failed, %d\n", name, irq); 776 return irq; 777 } 778 } 779 ret = devm_request_irq(ctx->dev, irq, handler, 780 flags | IRQF_NO_AUTOEN, "drm_decon", ctx); 781 if (ret < 0) { 782 dev_err(ctx->dev, "IRQ %s request failed\n", name); 783 return ret; 784 } 785 786 return irq; 787} 788 789static int exynos5433_decon_probe(struct platform_device *pdev) 790{ 791 struct device *dev = &pdev->dev; 792 struct decon_context *ctx; 793 int ret; 794 int i; 795 796 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 797 if (!ctx) 798 return -ENOMEM; 799 800 ctx->dev = dev; 801 ctx->out_type = (unsigned long)of_device_get_match_data(dev); 802 spin_lock_init(&ctx->vblank_lock); 803 804 if (ctx->out_type & IFTYPE_HDMI) 805 ctx->first_win = 1; 806 807 for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) { 808 struct clk *clk; 809 810 clk = devm_clk_get(ctx->dev, decon_clks_name[i]); 811 if (IS_ERR(clk)) 812 return PTR_ERR(clk); 813 814 ctx->clks[i] = clk; 815 } 816 817 ctx->addr = devm_platform_ioremap_resource(pdev, 0); 818 if (IS_ERR(ctx->addr)) 819 return PTR_ERR(ctx->addr); 820 821 ret = decon_conf_irq(ctx, "vsync", decon_irq_handler, 0); 822 if (ret < 0) 823 return ret; 824 ctx->irq_vsync = ret; 825 826 ret = decon_conf_irq(ctx, "lcd_sys", decon_irq_handler, 0); 827 if (ret < 0) 828 return ret; 829 ctx->irq_lcd_sys = ret; 830 831 ret = decon_conf_irq(ctx, "te", decon_te_irq_handler, 832 IRQF_TRIGGER_RISING); 833 if (ret < 0) 834 return ret; 835 if (ret) { 836 ctx->te_irq = ret; 837 ctx->out_type &= ~I80_HW_TRG; 838 } 839 840 if (ctx->out_type & I80_HW_TRG) { 841 ctx->sysreg = syscon_regmap_lookup_by_phandle(dev->of_node, 842 "samsung,disp-sysreg"); 843 if (IS_ERR(ctx->sysreg)) { 844 dev_err(dev, "failed to get system register\n"); 845 return PTR_ERR(ctx->sysreg); 846 } 847 } 848 849 platform_set_drvdata(pdev, ctx); 850 851 pm_runtime_enable(dev); 852 853 ret = component_add(dev, &decon_component_ops); 854 if (ret) 855 goto err_disable_pm_runtime; 856 857 return 0; 858 859err_disable_pm_runtime: 860 pm_runtime_disable(dev); 861 862 return ret; 863} 864 865static void exynos5433_decon_remove(struct platform_device *pdev) 866{ 867 pm_runtime_disable(&pdev->dev); 868 869 component_del(&pdev->dev, &decon_component_ops); 870} 871 872struct platform_driver exynos5433_decon_driver = { 873 .probe = exynos5433_decon_probe, 874 .remove_new = exynos5433_decon_remove, 875 .driver = { 876 .name = "exynos5433-decon", 877 .pm = pm_ptr(&exynos5433_decon_pm_ops), 878 .of_match_table = exynos5433_decon_driver_dt_match, 879 }, 880}; 881