| 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * Copyright © 2018 Broadcom |
| 4 | * |
| 5 | * Authors: |
| 6 | * Eric Anholt <eric@anholt.net> |
| 7 | * Boris Brezillon <boris.brezillon@bootlin.com> |
| 8 | */ |
| 9 | |
| 10 | #include <linux/clk.h> |
| 11 | #include <linux/component.h> |
| 12 | #include <linux/mod_devicetable.h> |
| 13 | #include <linux/platform_device.h> |
| 14 | #include <linux/pm_runtime.h> |
| 15 | |
| 16 | #include <drm/drm_atomic.h> |
| 17 | #include <drm/drm_atomic_helper.h> |
| 18 | #include <drm/drm_drv.h> |
| 19 | #include <drm/drm_edid.h> |
| 20 | #include <drm/drm_fb_dma_helper.h> |
| 21 | #include <drm/drm_fourcc.h> |
| 22 | #include <drm/drm_framebuffer.h> |
| 23 | #include <drm/drm_panel.h> |
| 24 | #include <drm/drm_print.h> |
| 25 | #include <drm/drm_probe_helper.h> |
| 26 | #include <drm/drm_vblank.h> |
| 27 | #include <drm/drm_writeback.h> |
| 28 | |
| 29 | #include "vc4_drv.h" |
| 30 | #include "vc4_regs.h" |
| 31 | |
| 32 | /* Base address of the output. Raster formats must be 4-byte aligned, |
| 33 | * T and LT must be 16-byte aligned or maybe utile-aligned (docs are |
| 34 | * inconsistent, but probably utile). |
| 35 | */ |
| 36 | #define TXP_DST_PTR 0x00 |
| 37 | |
| 38 | /* Pitch in bytes for raster images, 16-byte aligned. For tiled, it's |
| 39 | * the width in tiles. |
| 40 | */ |
| 41 | #define TXP_DST_PITCH 0x04 |
| 42 | /* For T-tiled imgaes, DST_PITCH should be the number of tiles wide, |
| 43 | * shifted up. |
| 44 | */ |
| 45 | # define TXP_T_TILE_WIDTH_SHIFT 7 |
| 46 | /* For LT-tiled images, DST_PITCH should be the number of utiles wide, |
| 47 | * shifted up. |
| 48 | */ |
| 49 | # define TXP_LT_TILE_WIDTH_SHIFT 4 |
| 50 | |
| 51 | /* Pre-rotation width/height of the image. Must match HVS config. |
| 52 | * |
| 53 | * If TFORMAT and 32-bit, limit is 1920 for 32-bit and 3840 to 16-bit |
| 54 | * and width/height must be tile or utile-aligned as appropriate. If |
| 55 | * transposing (rotating), width is limited to 1920. |
| 56 | * |
| 57 | * Height is limited to various numbers between 4088 and 4095. I'd |
| 58 | * just use 4088 to be safe. |
| 59 | */ |
| 60 | #define TXP_DIM 0x08 |
| 61 | # define TXP_HEIGHT_SHIFT 16 |
| 62 | # define TXP_HEIGHT_MASK GENMASK(31, 16) |
| 63 | # define TXP_WIDTH_SHIFT 0 |
| 64 | # define TXP_WIDTH_MASK GENMASK(15, 0) |
| 65 | |
| 66 | #define TXP_DST_CTRL 0x0c |
| 67 | /* These bits are set to 0x54 */ |
| 68 | #define TXP_PILOT_SHIFT 24 |
| 69 | #define TXP_PILOT_MASK GENMASK(31, 24) |
| 70 | /* Bits 22-23 are set to 0x01 */ |
| 71 | #define TXP_VERSION_SHIFT 22 |
| 72 | #define TXP_VERSION_MASK GENMASK(23, 22) |
| 73 | |
| 74 | /* Powers down the internal memory. */ |
| 75 | # define TXP_POWERDOWN BIT(21) |
| 76 | |
| 77 | /* Enables storing the alpha component in 8888/4444, instead of |
| 78 | * filling with ~ALPHA_INVERT. |
| 79 | */ |
| 80 | # define TXP_ALPHA_ENABLE BIT(20) |
| 81 | |
| 82 | /* 4 bits, each enables stores for a channel in each set of 4 bytes. |
| 83 | * Set to 0xf for normal operation. |
| 84 | */ |
| 85 | # define TXP_BYTE_ENABLE_SHIFT 16 |
| 86 | # define TXP_BYTE_ENABLE_MASK GENMASK(19, 16) |
| 87 | |
| 88 | /* Debug: Generate VSTART again at EOF. */ |
| 89 | # define TXP_VSTART_AT_EOF BIT(15) |
| 90 | |
| 91 | /* Debug: Terminate the current frame immediately. Stops AXI |
| 92 | * writes. |
| 93 | */ |
| 94 | # define TXP_ABORT BIT(14) |
| 95 | |
| 96 | # define TXP_DITHER BIT(13) |
| 97 | |
| 98 | /* Inverts alpha if TXP_ALPHA_ENABLE, chooses fill value for |
| 99 | * !TXP_ALPHA_ENABLE. |
| 100 | */ |
| 101 | # define TXP_ALPHA_INVERT BIT(12) |
| 102 | |
| 103 | /* Note: I've listed the channels here in high bit (in byte 3/2/1) to |
| 104 | * low bit (in byte 0) order. |
| 105 | */ |
| 106 | # define TXP_FORMAT_SHIFT 8 |
| 107 | # define TXP_FORMAT_MASK GENMASK(11, 8) |
| 108 | # define TXP_FORMAT_ABGR4444 0 |
| 109 | # define TXP_FORMAT_ARGB4444 1 |
| 110 | # define TXP_FORMAT_BGRA4444 2 |
| 111 | # define TXP_FORMAT_RGBA4444 3 |
| 112 | # define TXP_FORMAT_BGR565 6 |
| 113 | # define TXP_FORMAT_RGB565 7 |
| 114 | /* 888s are non-rotated, raster-only */ |
| 115 | # define TXP_FORMAT_BGR888 8 |
| 116 | # define TXP_FORMAT_RGB888 9 |
| 117 | # define TXP_FORMAT_ABGR8888 12 |
| 118 | # define TXP_FORMAT_ARGB8888 13 |
| 119 | # define TXP_FORMAT_BGRA8888 14 |
| 120 | # define TXP_FORMAT_RGBA8888 15 |
| 121 | |
| 122 | /* If TFORMAT is set, generates LT instead of T format. */ |
| 123 | # define TXP_LINEAR_UTILE BIT(7) |
| 124 | |
| 125 | /* Rotate output by 90 degrees. */ |
| 126 | # define TXP_TRANSPOSE BIT(6) |
| 127 | |
| 128 | /* Generate a tiled format for V3D. */ |
| 129 | # define TXP_TFORMAT BIT(5) |
| 130 | |
| 131 | /* Generates some undefined test mode output. */ |
| 132 | # define TXP_TEST_MODE BIT(4) |
| 133 | |
| 134 | /* Request odd field from HVS. */ |
| 135 | # define TXP_FIELD BIT(3) |
| 136 | |
| 137 | /* Raise interrupt when idle. */ |
| 138 | # define TXP_EI BIT(2) |
| 139 | |
| 140 | /* Set when generating a frame, clears when idle. */ |
| 141 | # define TXP_BUSY BIT(1) |
| 142 | |
| 143 | /* Starts a frame. Self-clearing. */ |
| 144 | # define TXP_GO BIT(0) |
| 145 | |
| 146 | /* Number of lines received and committed to memory. */ |
| 147 | #define TXP_PROGRESS 0x10 |
| 148 | |
| 149 | #define TXP_DST_PTR_HIGH_MOPLET 0x1c |
| 150 | #define TXP_DST_PTR_HIGH_MOP 0x24 |
| 151 | |
| 152 | #define TXP_READ(offset) \ |
| 153 | ({ \ |
| 154 | kunit_fail_current_test("Accessing a register in a unit test!\n"); \ |
| 155 | readl(txp->regs + (offset)); \ |
| 156 | }) |
| 157 | |
| 158 | #define TXP_WRITE(offset, val) \ |
| 159 | do { \ |
| 160 | kunit_fail_current_test("Accessing a register in a unit test!\n"); \ |
| 161 | writel(val, txp->regs + (offset)); \ |
| 162 | } while (0) |
| 163 | |
| 164 | struct vc4_txp { |
| 165 | struct vc4_crtc base; |
| 166 | const struct vc4_txp_data *data; |
| 167 | |
| 168 | struct platform_device *pdev; |
| 169 | |
| 170 | struct vc4_encoder encoder; |
| 171 | struct drm_writeback_connector connector; |
| 172 | |
| 173 | void __iomem *regs; |
| 174 | }; |
| 175 | |
| 176 | #define encoder_to_vc4_txp(_encoder) \ |
| 177 | container_of_const(_encoder, struct vc4_txp, encoder.base) |
| 178 | |
| 179 | #define connector_to_vc4_txp(_connector) \ |
| 180 | container_of_const(_connector, struct vc4_txp, connector.base) |
| 181 | |
| 182 | static const struct debugfs_reg32 txp_regs[] = { |
| 183 | VC4_REG32(TXP_DST_PTR), |
| 184 | VC4_REG32(TXP_DST_PITCH), |
| 185 | VC4_REG32(TXP_DIM), |
| 186 | VC4_REG32(TXP_DST_CTRL), |
| 187 | VC4_REG32(TXP_PROGRESS), |
| 188 | }; |
| 189 | |
| 190 | static int vc4_txp_connector_get_modes(struct drm_connector *connector) |
| 191 | { |
| 192 | struct drm_device *dev = connector->dev; |
| 193 | |
| 194 | return drm_add_modes_noedid(connector, hdisplay: dev->mode_config.max_width, |
| 195 | vdisplay: dev->mode_config.max_height); |
| 196 | } |
| 197 | |
| 198 | static enum drm_mode_status |
| 199 | vc4_txp_connector_mode_valid(struct drm_connector *connector, |
| 200 | const struct drm_display_mode *mode) |
| 201 | { |
| 202 | struct drm_device *dev = connector->dev; |
| 203 | struct drm_mode_config *mode_config = &dev->mode_config; |
| 204 | int w = mode->hdisplay, h = mode->vdisplay; |
| 205 | |
| 206 | if (w < mode_config->min_width || w > mode_config->max_width) |
| 207 | return MODE_BAD_HVALUE; |
| 208 | |
| 209 | if (h < mode_config->min_height || h > mode_config->max_height) |
| 210 | return MODE_BAD_VVALUE; |
| 211 | |
| 212 | return MODE_OK; |
| 213 | } |
| 214 | |
| 215 | static const u32 drm_fmts[] = { |
| 216 | DRM_FORMAT_RGB888, |
| 217 | DRM_FORMAT_BGR888, |
| 218 | DRM_FORMAT_XRGB8888, |
| 219 | DRM_FORMAT_XBGR8888, |
| 220 | DRM_FORMAT_ARGB8888, |
| 221 | DRM_FORMAT_ABGR8888, |
| 222 | DRM_FORMAT_RGBX8888, |
| 223 | DRM_FORMAT_BGRX8888, |
| 224 | DRM_FORMAT_RGBA8888, |
| 225 | DRM_FORMAT_BGRA8888, |
| 226 | }; |
| 227 | |
| 228 | static const u32 txp_fmts[] = { |
| 229 | TXP_FORMAT_RGB888, |
| 230 | TXP_FORMAT_BGR888, |
| 231 | TXP_FORMAT_ARGB8888, |
| 232 | TXP_FORMAT_ABGR8888, |
| 233 | TXP_FORMAT_ARGB8888, |
| 234 | TXP_FORMAT_ABGR8888, |
| 235 | TXP_FORMAT_RGBA8888, |
| 236 | TXP_FORMAT_BGRA8888, |
| 237 | TXP_FORMAT_RGBA8888, |
| 238 | TXP_FORMAT_BGRA8888, |
| 239 | }; |
| 240 | |
| 241 | static void vc4_txp_armed(struct drm_crtc_state *state) |
| 242 | { |
| 243 | struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(state); |
| 244 | |
| 245 | vc4_state->txp_armed = true; |
| 246 | } |
| 247 | |
| 248 | static int vc4_txp_connector_atomic_check(struct drm_connector *conn, |
| 249 | struct drm_atomic_state *state) |
| 250 | { |
| 251 | struct drm_connector_state *conn_state; |
| 252 | struct drm_crtc_state *crtc_state; |
| 253 | struct drm_framebuffer *fb; |
| 254 | int i; |
| 255 | |
| 256 | conn_state = drm_atomic_get_new_connector_state(state, connector: conn); |
| 257 | if (!conn_state->writeback_job) |
| 258 | return 0; |
| 259 | |
| 260 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc: conn_state->crtc); |
| 261 | |
| 262 | fb = conn_state->writeback_job->fb; |
| 263 | if (fb->width != crtc_state->mode.hdisplay || |
| 264 | fb->height != crtc_state->mode.vdisplay) { |
| 265 | DRM_DEBUG_KMS("Invalid framebuffer size %ux%u\n" , |
| 266 | fb->width, fb->height); |
| 267 | return -EINVAL; |
| 268 | } |
| 269 | |
| 270 | for (i = 0; i < ARRAY_SIZE(drm_fmts); i++) { |
| 271 | if (fb->format->format == drm_fmts[i]) |
| 272 | break; |
| 273 | } |
| 274 | |
| 275 | if (i == ARRAY_SIZE(drm_fmts)) |
| 276 | return -EINVAL; |
| 277 | |
| 278 | /* Pitch must be aligned on 16 bytes. */ |
| 279 | if (fb->pitches[0] & GENMASK(3, 0)) |
| 280 | return -EINVAL; |
| 281 | |
| 282 | vc4_txp_armed(state: crtc_state); |
| 283 | |
| 284 | return 0; |
| 285 | } |
| 286 | |
| 287 | static void vc4_txp_connector_atomic_commit(struct drm_connector *conn, |
| 288 | struct drm_atomic_state *state) |
| 289 | { |
| 290 | struct drm_device *drm = conn->dev; |
| 291 | struct drm_connector_state *conn_state = drm_atomic_get_new_connector_state(state, |
| 292 | connector: conn); |
| 293 | struct vc4_txp *txp = connector_to_vc4_txp(conn); |
| 294 | const struct vc4_txp_data *txp_data = txp->data; |
| 295 | struct drm_gem_dma_object *gem; |
| 296 | struct drm_display_mode *mode; |
| 297 | struct drm_framebuffer *fb; |
| 298 | unsigned int hdisplay; |
| 299 | unsigned int vdisplay; |
| 300 | dma_addr_t addr; |
| 301 | u32 ctrl; |
| 302 | int idx; |
| 303 | int i; |
| 304 | |
| 305 | if (WARN_ON(!conn_state->writeback_job)) |
| 306 | return; |
| 307 | |
| 308 | mode = &conn_state->crtc->state->adjusted_mode; |
| 309 | fb = conn_state->writeback_job->fb; |
| 310 | |
| 311 | for (i = 0; i < ARRAY_SIZE(drm_fmts); i++) { |
| 312 | if (fb->format->format == drm_fmts[i]) |
| 313 | break; |
| 314 | } |
| 315 | |
| 316 | if (WARN_ON(i == ARRAY_SIZE(drm_fmts))) |
| 317 | return; |
| 318 | |
| 319 | ctrl = TXP_GO | TXP_EI | |
| 320 | VC4_SET_FIELD(txp_fmts[i], TXP_FORMAT); |
| 321 | |
| 322 | if (txp_data->has_byte_enable) |
| 323 | ctrl |= VC4_SET_FIELD(0xf, TXP_BYTE_ENABLE); |
| 324 | |
| 325 | if (fb->format->has_alpha) |
| 326 | ctrl |= TXP_ALPHA_ENABLE; |
| 327 | else |
| 328 | /* |
| 329 | * If TXP_ALPHA_ENABLE isn't set and TXP_ALPHA_INVERT is, the |
| 330 | * hardware will force the output padding to be 0xff. |
| 331 | */ |
| 332 | ctrl |= TXP_ALPHA_INVERT; |
| 333 | |
| 334 | if (!drm_dev_enter(dev: drm, idx: &idx)) |
| 335 | return; |
| 336 | |
| 337 | gem = drm_fb_dma_get_gem_obj(fb, plane: 0); |
| 338 | addr = gem->dma_addr + fb->offsets[0]; |
| 339 | |
| 340 | TXP_WRITE(TXP_DST_PTR, lower_32_bits(addr)); |
| 341 | |
| 342 | if (txp_data->supports_40bit_addresses) |
| 343 | TXP_WRITE(txp_data->high_addr_ptr_reg, upper_32_bits(addr) & 0xff); |
| 344 | |
| 345 | TXP_WRITE(TXP_DST_PITCH, fb->pitches[0]); |
| 346 | |
| 347 | hdisplay = mode->hdisplay ?: 1; |
| 348 | vdisplay = mode->vdisplay ?: 1; |
| 349 | if (txp_data->size_minus_one) { |
| 350 | hdisplay -= 1; |
| 351 | vdisplay -= 1; |
| 352 | } |
| 353 | |
| 354 | TXP_WRITE(TXP_DIM, |
| 355 | VC4_SET_FIELD(hdisplay, TXP_WIDTH) | |
| 356 | VC4_SET_FIELD(vdisplay, TXP_HEIGHT)); |
| 357 | |
| 358 | TXP_WRITE(TXP_DST_CTRL, ctrl); |
| 359 | |
| 360 | drm_writeback_queue_job(wb_connector: &txp->connector, conn_state); |
| 361 | |
| 362 | drm_dev_exit(idx); |
| 363 | } |
| 364 | |
| 365 | static const struct drm_connector_helper_funcs vc4_txp_connector_helper_funcs = { |
| 366 | .get_modes = vc4_txp_connector_get_modes, |
| 367 | .mode_valid = vc4_txp_connector_mode_valid, |
| 368 | .atomic_check = vc4_txp_connector_atomic_check, |
| 369 | .atomic_commit = vc4_txp_connector_atomic_commit, |
| 370 | }; |
| 371 | |
| 372 | static enum drm_connector_status |
| 373 | vc4_txp_connector_detect(struct drm_connector *connector, bool force) |
| 374 | { |
| 375 | return connector_status_connected; |
| 376 | } |
| 377 | |
| 378 | static const struct drm_connector_funcs vc4_txp_connector_funcs = { |
| 379 | .detect = vc4_txp_connector_detect, |
| 380 | .fill_modes = drm_helper_probe_single_connector_modes, |
| 381 | .destroy = drm_connector_cleanup, |
| 382 | .reset = drm_atomic_helper_connector_reset, |
| 383 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
| 384 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
| 385 | }; |
| 386 | |
| 387 | static void vc4_txp_encoder_disable(struct drm_encoder *encoder) |
| 388 | { |
| 389 | struct drm_device *drm = encoder->dev; |
| 390 | struct vc4_dev *vc4 = to_vc4_dev(drm); |
| 391 | struct vc4_txp *txp = encoder_to_vc4_txp(encoder); |
| 392 | int idx; |
| 393 | |
| 394 | if (!drm_dev_enter(dev: drm, idx: &idx)) |
| 395 | return; |
| 396 | |
| 397 | if (TXP_READ(TXP_DST_CTRL) & TXP_BUSY) { |
| 398 | unsigned long timeout = jiffies + msecs_to_jiffies(m: 1000); |
| 399 | |
| 400 | TXP_WRITE(TXP_DST_CTRL, TXP_ABORT); |
| 401 | |
| 402 | while (TXP_READ(TXP_DST_CTRL) & TXP_BUSY && |
| 403 | time_before(jiffies, timeout)) |
| 404 | ; |
| 405 | |
| 406 | WARN_ON(TXP_READ(TXP_DST_CTRL) & TXP_BUSY); |
| 407 | } |
| 408 | |
| 409 | if (vc4->gen < VC4_GEN_6_C) |
| 410 | TXP_WRITE(TXP_DST_CTRL, TXP_POWERDOWN); |
| 411 | |
| 412 | drm_dev_exit(idx); |
| 413 | } |
| 414 | |
| 415 | static const struct drm_encoder_helper_funcs vc4_txp_encoder_helper_funcs = { |
| 416 | .disable = vc4_txp_encoder_disable, |
| 417 | }; |
| 418 | |
| 419 | static int vc4_txp_enable_vblank(struct drm_crtc *crtc) |
| 420 | { |
| 421 | return 0; |
| 422 | } |
| 423 | |
| 424 | static void vc4_txp_disable_vblank(struct drm_crtc *crtc) {} |
| 425 | |
| 426 | static const struct drm_crtc_funcs vc4_txp_crtc_funcs = { |
| 427 | .set_config = drm_atomic_helper_set_config, |
| 428 | .page_flip = vc4_page_flip, |
| 429 | .reset = vc4_crtc_reset, |
| 430 | .atomic_duplicate_state = vc4_crtc_duplicate_state, |
| 431 | .atomic_destroy_state = vc4_crtc_destroy_state, |
| 432 | .enable_vblank = vc4_txp_enable_vblank, |
| 433 | .disable_vblank = vc4_txp_disable_vblank, |
| 434 | .late_register = vc4_crtc_late_register, |
| 435 | }; |
| 436 | |
| 437 | static int vc4_txp_atomic_check(struct drm_crtc *crtc, |
| 438 | struct drm_atomic_state *state) |
| 439 | { |
| 440 | struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, |
| 441 | crtc); |
| 442 | int ret; |
| 443 | |
| 444 | ret = vc4_hvs_atomic_check(crtc, state); |
| 445 | if (ret) |
| 446 | return ret; |
| 447 | |
| 448 | crtc_state->no_vblank = true; |
| 449 | |
| 450 | return 0; |
| 451 | } |
| 452 | |
| 453 | static void vc4_txp_atomic_enable(struct drm_crtc *crtc, |
| 454 | struct drm_atomic_state *state) |
| 455 | { |
| 456 | drm_crtc_vblank_on(crtc); |
| 457 | vc4_hvs_atomic_enable(crtc, state); |
| 458 | } |
| 459 | |
| 460 | static void vc4_txp_atomic_disable(struct drm_crtc *crtc, |
| 461 | struct drm_atomic_state *state) |
| 462 | { |
| 463 | struct drm_device *dev = crtc->dev; |
| 464 | |
| 465 | /* Disable vblank irq handling before crtc is disabled. */ |
| 466 | drm_crtc_vblank_off(crtc); |
| 467 | |
| 468 | vc4_hvs_atomic_disable(crtc, state); |
| 469 | |
| 470 | /* |
| 471 | * Make sure we issue a vblank event after disabling the CRTC if |
| 472 | * someone was waiting it. |
| 473 | */ |
| 474 | if (crtc->state->event) { |
| 475 | unsigned long flags; |
| 476 | |
| 477 | spin_lock_irqsave(&dev->event_lock, flags); |
| 478 | drm_crtc_send_vblank_event(crtc, e: crtc->state->event); |
| 479 | crtc->state->event = NULL; |
| 480 | spin_unlock_irqrestore(lock: &dev->event_lock, flags); |
| 481 | } |
| 482 | } |
| 483 | |
| 484 | static const struct drm_crtc_helper_funcs vc4_txp_crtc_helper_funcs = { |
| 485 | .atomic_check = vc4_txp_atomic_check, |
| 486 | .atomic_begin = vc4_hvs_atomic_begin, |
| 487 | .atomic_flush = vc4_hvs_atomic_flush, |
| 488 | .atomic_enable = vc4_txp_atomic_enable, |
| 489 | .atomic_disable = vc4_txp_atomic_disable, |
| 490 | }; |
| 491 | |
| 492 | static irqreturn_t vc4_txp_interrupt(int irq, void *data) |
| 493 | { |
| 494 | struct vc4_txp *txp = data; |
| 495 | struct vc4_crtc *vc4_crtc = &txp->base; |
| 496 | |
| 497 | /* |
| 498 | * We don't need to protect the register access using |
| 499 | * drm_dev_enter() there because the interrupt handler lifetime |
| 500 | * is tied to the device itself, and not to the DRM device. |
| 501 | * |
| 502 | * So when the device will be gone, one of the first thing we |
| 503 | * will be doing will be to unregister the interrupt handler, |
| 504 | * and then unregister the DRM device. drm_dev_enter() would |
| 505 | * thus always succeed if we are here. |
| 506 | */ |
| 507 | TXP_WRITE(TXP_DST_CTRL, TXP_READ(TXP_DST_CTRL) & ~TXP_EI); |
| 508 | vc4_crtc_handle_vblank(crtc: vc4_crtc); |
| 509 | drm_writeback_signal_completion(wb_connector: &txp->connector, status: 0); |
| 510 | |
| 511 | return IRQ_HANDLED; |
| 512 | } |
| 513 | |
| 514 | static const struct vc4_txp_data bcm2712_mop_data = { |
| 515 | .base = { |
| 516 | .name = "mop" , |
| 517 | .debugfs_name = "mop_regs" , |
| 518 | .hvs_available_channels = BIT(2), |
| 519 | .hvs_output = 2, |
| 520 | }, |
| 521 | .encoder_type = VC4_ENCODER_TYPE_TXP0, |
| 522 | .high_addr_ptr_reg = TXP_DST_PTR_HIGH_MOP, |
| 523 | .has_byte_enable = true, |
| 524 | .size_minus_one = true, |
| 525 | .supports_40bit_addresses = true, |
| 526 | }; |
| 527 | |
| 528 | static const struct vc4_txp_data bcm2712_moplet_data = { |
| 529 | .base = { |
| 530 | .name = "moplet" , |
| 531 | .debugfs_name = "moplet_regs" , |
| 532 | .hvs_available_channels = BIT(1), |
| 533 | .hvs_output = 4, |
| 534 | }, |
| 535 | .encoder_type = VC4_ENCODER_TYPE_TXP1, |
| 536 | .high_addr_ptr_reg = TXP_DST_PTR_HIGH_MOPLET, |
| 537 | .size_minus_one = true, |
| 538 | .supports_40bit_addresses = true, |
| 539 | }; |
| 540 | |
| 541 | const struct vc4_txp_data bcm2835_txp_data = { |
| 542 | .base = { |
| 543 | .name = "txp" , |
| 544 | .debugfs_name = "txp_regs" , |
| 545 | .hvs_available_channels = BIT(2), |
| 546 | .hvs_output = 2, |
| 547 | }, |
| 548 | .encoder_type = VC4_ENCODER_TYPE_TXP0, |
| 549 | .has_byte_enable = true, |
| 550 | }; |
| 551 | |
| 552 | static int vc4_txp_bind(struct device *dev, struct device *master, void *data) |
| 553 | { |
| 554 | struct platform_device *pdev = to_platform_device(dev); |
| 555 | struct drm_device *drm = dev_get_drvdata(dev: master); |
| 556 | const struct vc4_txp_data *txp_data; |
| 557 | struct vc4_encoder *vc4_encoder; |
| 558 | struct drm_encoder *encoder; |
| 559 | struct vc4_crtc *vc4_crtc; |
| 560 | struct vc4_txp *txp; |
| 561 | int ret, irq; |
| 562 | |
| 563 | irq = platform_get_irq(pdev, 0); |
| 564 | if (irq < 0) |
| 565 | return irq; |
| 566 | |
| 567 | txp = drmm_kzalloc(dev: drm, size: sizeof(*txp), GFP_KERNEL); |
| 568 | if (!txp) |
| 569 | return -ENOMEM; |
| 570 | |
| 571 | txp_data = of_device_get_match_data(dev); |
| 572 | if (!txp_data) |
| 573 | return -ENODEV; |
| 574 | |
| 575 | txp->data = txp_data; |
| 576 | txp->pdev = pdev; |
| 577 | txp->regs = vc4_ioremap_regs(dev: pdev, index: 0); |
| 578 | if (IS_ERR(ptr: txp->regs)) |
| 579 | return PTR_ERR(ptr: txp->regs); |
| 580 | |
| 581 | vc4_crtc = &txp->base; |
| 582 | vc4_crtc->regset.base = txp->regs; |
| 583 | vc4_crtc->regset.regs = txp_regs; |
| 584 | vc4_crtc->regset.nregs = ARRAY_SIZE(txp_regs); |
| 585 | |
| 586 | ret = vc4_crtc_init(drm, pdev, vc4_crtc, data: &txp_data->base, |
| 587 | crtc_funcs: &vc4_txp_crtc_funcs, crtc_helper_funcs: &vc4_txp_crtc_helper_funcs, feeds_txp: true); |
| 588 | if (ret) |
| 589 | return ret; |
| 590 | |
| 591 | vc4_encoder = &txp->encoder; |
| 592 | txp->encoder.type = txp_data->encoder_type; |
| 593 | |
| 594 | encoder = &vc4_encoder->base; |
| 595 | encoder->possible_crtcs = drm_crtc_mask(crtc: &vc4_crtc->base); |
| 596 | |
| 597 | drm_encoder_helper_add(encoder, funcs: &vc4_txp_encoder_helper_funcs); |
| 598 | |
| 599 | ret = drmm_encoder_init(dev: drm, encoder, NULL, DRM_MODE_ENCODER_VIRTUAL, NULL); |
| 600 | if (ret) |
| 601 | return ret; |
| 602 | |
| 603 | drm_connector_helper_add(connector: &txp->connector.base, |
| 604 | funcs: &vc4_txp_connector_helper_funcs); |
| 605 | ret = drm_writeback_connector_init_with_encoder(dev: drm, wb_connector: &txp->connector, |
| 606 | enc: encoder, |
| 607 | con_funcs: &vc4_txp_connector_funcs, |
| 608 | formats: drm_fmts, ARRAY_SIZE(drm_fmts)); |
| 609 | if (ret) |
| 610 | return ret; |
| 611 | |
| 612 | ret = devm_request_irq(dev, irq, handler: vc4_txp_interrupt, irqflags: 0, |
| 613 | devname: dev_name(dev), dev_id: txp); |
| 614 | if (ret) |
| 615 | return ret; |
| 616 | |
| 617 | dev_set_drvdata(dev, data: txp); |
| 618 | |
| 619 | return 0; |
| 620 | } |
| 621 | |
| 622 | static void vc4_txp_unbind(struct device *dev, struct device *master, |
| 623 | void *data) |
| 624 | { |
| 625 | struct vc4_txp *txp = dev_get_drvdata(dev); |
| 626 | |
| 627 | drm_connector_cleanup(connector: &txp->connector.base); |
| 628 | } |
| 629 | |
| 630 | static const struct component_ops vc4_txp_ops = { |
| 631 | .bind = vc4_txp_bind, |
| 632 | .unbind = vc4_txp_unbind, |
| 633 | }; |
| 634 | |
| 635 | static int vc4_txp_probe(struct platform_device *pdev) |
| 636 | { |
| 637 | return component_add(&pdev->dev, &vc4_txp_ops); |
| 638 | } |
| 639 | |
| 640 | static void vc4_txp_remove(struct platform_device *pdev) |
| 641 | { |
| 642 | component_del(&pdev->dev, &vc4_txp_ops); |
| 643 | } |
| 644 | |
| 645 | static const struct of_device_id vc4_txp_dt_match[] = { |
| 646 | { .compatible = "brcm,bcm2712-mop" , .data = &bcm2712_mop_data }, |
| 647 | { .compatible = "brcm,bcm2712-moplet" , .data = &bcm2712_moplet_data }, |
| 648 | { .compatible = "brcm,bcm2835-txp" , .data = &bcm2835_txp_data }, |
| 649 | { /* sentinel */ }, |
| 650 | }; |
| 651 | |
| 652 | struct platform_driver vc4_txp_driver = { |
| 653 | .probe = vc4_txp_probe, |
| 654 | .remove = vc4_txp_remove, |
| 655 | .driver = { |
| 656 | .name = "vc4_txp" , |
| 657 | .of_match_table = vc4_txp_dt_match, |
| 658 | }, |
| 659 | }; |
| 660 | |