Inki Dae | b73d123 | 2012-03-21 10:55:26 +0900 | [diff] [blame] | 1 | /* exynos_drm_vidi.c |
| 2 | * |
| 3 | * Copyright (C) 2012 Samsung Electronics Co.Ltd |
| 4 | * Authors: |
| 5 | * Inki Dae <inki.dae@samsung.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms of the GNU General Public License as published by the |
| 9 | * Free Software Foundation; either version 2 of the License, or (at your |
| 10 | * option) any later version. |
| 11 | * |
| 12 | */ |
| 13 | #include "drmP.h" |
| 14 | |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/module.h> |
| 17 | #include <linux/platform_device.h> |
| 18 | |
| 19 | #include <drm/exynos_drm.h> |
| 20 | |
| 21 | #include "drm_edid.h" |
| 22 | #include "drm_crtc_helper.h" |
| 23 | |
| 24 | #include "exynos_drm_drv.h" |
| 25 | #include "exynos_drm_crtc.h" |
| 26 | #include "exynos_drm_encoder.h" |
| 27 | |
| 28 | /* vidi has totally three virtual windows. */ |
| 29 | #define WINDOWS_NR 3 |
| 30 | |
| 31 | #define get_vidi_context(dev) platform_get_drvdata(to_platform_device(dev)) |
| 32 | |
| 33 | struct vidi_win_data { |
| 34 | unsigned int offset_x; |
| 35 | unsigned int offset_y; |
| 36 | unsigned int ovl_width; |
| 37 | unsigned int ovl_height; |
| 38 | unsigned int fb_width; |
| 39 | unsigned int fb_height; |
| 40 | unsigned int bpp; |
| 41 | dma_addr_t dma_addr; |
| 42 | void __iomem *vaddr; |
| 43 | unsigned int buf_offsize; |
| 44 | unsigned int line_size; /* bytes */ |
| 45 | bool enabled; |
| 46 | }; |
| 47 | |
| 48 | struct vidi_context { |
| 49 | struct exynos_drm_subdrv subdrv; |
| 50 | struct drm_crtc *crtc; |
| 51 | struct vidi_win_data win_data[WINDOWS_NR]; |
| 52 | struct edid *raw_edid; |
| 53 | unsigned int clkdiv; |
| 54 | unsigned int default_win; |
| 55 | unsigned long irq_flags; |
| 56 | unsigned int connected; |
| 57 | bool vblank_on; |
| 58 | bool suspended; |
| 59 | struct work_struct work; |
| 60 | struct mutex lock; |
| 61 | }; |
| 62 | |
| 63 | static const char fake_edid_info[] = { |
| 64 | 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x4c, 0x2d, 0x05, 0x05, |
| 65 | 0x00, 0x00, 0x00, 0x00, 0x30, 0x12, 0x01, 0x03, 0x80, 0x10, 0x09, 0x78, |
| 66 | 0x0a, 0xee, 0x91, 0xa3, 0x54, 0x4c, 0x99, 0x26, 0x0f, 0x50, 0x54, 0xbd, |
| 67 | 0xee, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, |
| 68 | 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x66, 0x21, 0x50, 0xb0, 0x51, 0x00, |
| 69 | 0x1b, 0x30, 0x40, 0x70, 0x36, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, |
| 70 | 0x01, 0x1d, 0x00, 0x72, 0x51, 0xd0, 0x1e, 0x20, 0x6e, 0x28, 0x55, 0x00, |
| 71 | 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x18, |
| 72 | 0x4b, 0x1a, 0x44, 0x17, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, |
| 73 | 0x00, 0x00, 0x00, 0xfc, 0x00, 0x53, 0x41, 0x4d, 0x53, 0x55, 0x4e, 0x47, |
| 74 | 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x01, 0xbc, 0x02, 0x03, 0x1e, 0xf1, |
| 75 | 0x46, 0x84, 0x05, 0x03, 0x10, 0x20, 0x22, 0x23, 0x09, 0x07, 0x07, 0x83, |
| 76 | 0x01, 0x00, 0x00, 0xe2, 0x00, 0x0f, 0x67, 0x03, 0x0c, 0x00, 0x10, 0x00, |
| 77 | 0xb8, 0x2d, 0x01, 0x1d, 0x80, 0x18, 0x71, 0x1c, 0x16, 0x20, 0x58, 0x2c, |
| 78 | 0x25, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x9e, 0x8c, 0x0a, 0xd0, 0x8a, |
| 79 | 0x20, 0xe0, 0x2d, 0x10, 0x10, 0x3e, 0x96, 0x00, 0xa0, 0x5a, 0x00, 0x00, |
| 80 | 0x00, 0x18, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c, |
| 81 | 0x45, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, |
| 82 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 83 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 84 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 85 | 0x00, 0x00, 0x00, 0x06 |
| 86 | }; |
| 87 | |
Inki Dae | b73d123 | 2012-03-21 10:55:26 +0900 | [diff] [blame] | 88 | static bool vidi_display_is_connected(struct device *dev) |
| 89 | { |
| 90 | struct vidi_context *ctx = get_vidi_context(dev); |
| 91 | |
| 92 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 93 | |
| 94 | /* |
| 95 | * connection request would come from user side |
| 96 | * to do hotplug through specific ioctl. |
| 97 | */ |
| 98 | return ctx->connected ? true : false; |
| 99 | } |
| 100 | |
| 101 | static int vidi_get_edid(struct device *dev, struct drm_connector *connector, |
| 102 | u8 *edid, int len) |
| 103 | { |
| 104 | struct vidi_context *ctx = get_vidi_context(dev); |
| 105 | struct edid *raw_edid; |
| 106 | |
| 107 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 108 | |
| 109 | /* |
| 110 | * the edid data comes from user side and it would be set |
| 111 | * to ctx->raw_edid through specific ioctl. |
| 112 | */ |
| 113 | if (!ctx->raw_edid) { |
| 114 | DRM_DEBUG_KMS("raw_edid is null.\n"); |
| 115 | return -EFAULT; |
| 116 | } |
| 117 | |
| 118 | raw_edid = kzalloc(len, GFP_KERNEL); |
| 119 | if (!raw_edid) { |
| 120 | DRM_DEBUG_KMS("failed to allocate raw_edid.\n"); |
| 121 | return -ENOMEM; |
| 122 | } |
| 123 | |
| 124 | memcpy(raw_edid, ctx->raw_edid, min((1 + ctx->raw_edid->extensions) |
| 125 | * EDID_LENGTH, len)); |
| 126 | |
| 127 | /* attach the edid data to connector. */ |
| 128 | connector->display_info.raw_edid = (char *)raw_edid; |
| 129 | |
| 130 | memcpy(edid, ctx->raw_edid, min((1 + ctx->raw_edid->extensions) |
| 131 | * EDID_LENGTH, len)); |
| 132 | |
| 133 | return 0; |
| 134 | } |
| 135 | |
| 136 | static void *vidi_get_panel(struct device *dev) |
| 137 | { |
| 138 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 139 | |
| 140 | /* TODO. */ |
| 141 | |
| 142 | return NULL; |
| 143 | } |
| 144 | |
| 145 | static int vidi_check_timing(struct device *dev, void *timing) |
| 146 | { |
| 147 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 148 | |
| 149 | /* TODO. */ |
| 150 | |
| 151 | return 0; |
| 152 | } |
| 153 | |
| 154 | static int vidi_display_power_on(struct device *dev, int mode) |
| 155 | { |
| 156 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 157 | |
| 158 | /* TODO */ |
| 159 | |
| 160 | return 0; |
| 161 | } |
| 162 | |
| 163 | static struct exynos_drm_display_ops vidi_display_ops = { |
| 164 | .type = EXYNOS_DISPLAY_TYPE_VIDI, |
| 165 | .is_connected = vidi_display_is_connected, |
| 166 | .get_edid = vidi_get_edid, |
| 167 | .get_panel = vidi_get_panel, |
| 168 | .check_timing = vidi_check_timing, |
| 169 | .power_on = vidi_display_power_on, |
| 170 | }; |
| 171 | |
| 172 | static void vidi_dpms(struct device *subdrv_dev, int mode) |
| 173 | { |
| 174 | struct vidi_context *ctx = get_vidi_context(subdrv_dev); |
| 175 | |
| 176 | DRM_DEBUG_KMS("%s, %d\n", __FILE__, mode); |
| 177 | |
| 178 | mutex_lock(&ctx->lock); |
| 179 | |
| 180 | switch (mode) { |
| 181 | case DRM_MODE_DPMS_ON: |
| 182 | /* TODO. */ |
| 183 | break; |
| 184 | case DRM_MODE_DPMS_STANDBY: |
| 185 | case DRM_MODE_DPMS_SUSPEND: |
| 186 | case DRM_MODE_DPMS_OFF: |
| 187 | /* TODO. */ |
| 188 | break; |
| 189 | default: |
| 190 | DRM_DEBUG_KMS("unspecified mode %d\n", mode); |
| 191 | break; |
| 192 | } |
| 193 | |
| 194 | mutex_unlock(&ctx->lock); |
| 195 | } |
| 196 | |
| 197 | static void vidi_apply(struct device *subdrv_dev) |
| 198 | { |
| 199 | struct vidi_context *ctx = get_vidi_context(subdrv_dev); |
Joonyoung Shim | 677e84c | 2012-04-05 20:49:27 +0900 | [diff] [blame] | 200 | struct exynos_drm_manager *mgr = ctx->subdrv.manager; |
Inki Dae | b73d123 | 2012-03-21 10:55:26 +0900 | [diff] [blame] | 201 | struct exynos_drm_manager_ops *mgr_ops = mgr->ops; |
| 202 | struct exynos_drm_overlay_ops *ovl_ops = mgr->overlay_ops; |
| 203 | struct vidi_win_data *win_data; |
| 204 | int i; |
| 205 | |
| 206 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 207 | |
| 208 | for (i = 0; i < WINDOWS_NR; i++) { |
| 209 | win_data = &ctx->win_data[i]; |
| 210 | if (win_data->enabled && (ovl_ops && ovl_ops->commit)) |
| 211 | ovl_ops->commit(subdrv_dev, i); |
| 212 | } |
| 213 | |
| 214 | if (mgr_ops && mgr_ops->commit) |
| 215 | mgr_ops->commit(subdrv_dev); |
| 216 | } |
| 217 | |
| 218 | static void vidi_commit(struct device *dev) |
| 219 | { |
| 220 | struct vidi_context *ctx = get_vidi_context(dev); |
| 221 | |
| 222 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 223 | |
| 224 | if (ctx->suspended) |
| 225 | return; |
| 226 | } |
| 227 | |
| 228 | static int vidi_enable_vblank(struct device *dev) |
| 229 | { |
| 230 | struct vidi_context *ctx = get_vidi_context(dev); |
| 231 | |
| 232 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 233 | |
| 234 | if (ctx->suspended) |
| 235 | return -EPERM; |
| 236 | |
| 237 | if (!test_and_set_bit(0, &ctx->irq_flags)) |
| 238 | ctx->vblank_on = true; |
| 239 | |
| 240 | return 0; |
| 241 | } |
| 242 | |
| 243 | static void vidi_disable_vblank(struct device *dev) |
| 244 | { |
| 245 | struct vidi_context *ctx = get_vidi_context(dev); |
| 246 | |
| 247 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 248 | |
| 249 | if (ctx->suspended) |
| 250 | return; |
| 251 | |
| 252 | if (test_and_clear_bit(0, &ctx->irq_flags)) |
| 253 | ctx->vblank_on = false; |
| 254 | } |
| 255 | |
| 256 | static struct exynos_drm_manager_ops vidi_manager_ops = { |
| 257 | .dpms = vidi_dpms, |
| 258 | .apply = vidi_apply, |
| 259 | .commit = vidi_commit, |
| 260 | .enable_vblank = vidi_enable_vblank, |
| 261 | .disable_vblank = vidi_disable_vblank, |
| 262 | }; |
| 263 | |
| 264 | static void vidi_win_mode_set(struct device *dev, |
| 265 | struct exynos_drm_overlay *overlay) |
| 266 | { |
| 267 | struct vidi_context *ctx = get_vidi_context(dev); |
| 268 | struct vidi_win_data *win_data; |
| 269 | int win; |
| 270 | unsigned long offset; |
| 271 | |
| 272 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 273 | |
| 274 | if (!overlay) { |
| 275 | dev_err(dev, "overlay is NULL\n"); |
| 276 | return; |
| 277 | } |
| 278 | |
| 279 | win = overlay->zpos; |
| 280 | if (win == DEFAULT_ZPOS) |
| 281 | win = ctx->default_win; |
| 282 | |
| 283 | if (win < 0 || win > WINDOWS_NR) |
| 284 | return; |
| 285 | |
| 286 | offset = overlay->fb_x * (overlay->bpp >> 3); |
| 287 | offset += overlay->fb_y * overlay->pitch; |
| 288 | |
| 289 | DRM_DEBUG_KMS("offset = 0x%lx, pitch = %x\n", offset, overlay->pitch); |
| 290 | |
| 291 | win_data = &ctx->win_data[win]; |
| 292 | |
| 293 | win_data->offset_x = overlay->crtc_x; |
| 294 | win_data->offset_y = overlay->crtc_y; |
| 295 | win_data->ovl_width = overlay->crtc_width; |
| 296 | win_data->ovl_height = overlay->crtc_height; |
| 297 | win_data->fb_width = overlay->fb_width; |
| 298 | win_data->fb_height = overlay->fb_height; |
| 299 | win_data->dma_addr = overlay->dma_addr[0] + offset; |
| 300 | win_data->vaddr = overlay->vaddr[0] + offset; |
| 301 | win_data->bpp = overlay->bpp; |
| 302 | win_data->buf_offsize = (overlay->fb_width - overlay->crtc_width) * |
| 303 | (overlay->bpp >> 3); |
| 304 | win_data->line_size = overlay->crtc_width * (overlay->bpp >> 3); |
| 305 | |
| 306 | /* |
| 307 | * some parts of win_data should be transferred to user side |
| 308 | * through specific ioctl. |
| 309 | */ |
| 310 | |
| 311 | DRM_DEBUG_KMS("offset_x = %d, offset_y = %d\n", |
| 312 | win_data->offset_x, win_data->offset_y); |
| 313 | DRM_DEBUG_KMS("ovl_width = %d, ovl_height = %d\n", |
| 314 | win_data->ovl_width, win_data->ovl_height); |
| 315 | DRM_DEBUG_KMS("paddr = 0x%lx, vaddr = 0x%lx\n", |
| 316 | (unsigned long)win_data->dma_addr, |
| 317 | (unsigned long)win_data->vaddr); |
| 318 | DRM_DEBUG_KMS("fb_width = %d, crtc_width = %d\n", |
| 319 | overlay->fb_width, overlay->crtc_width); |
| 320 | } |
| 321 | |
| 322 | static void vidi_win_commit(struct device *dev, int zpos) |
| 323 | { |
| 324 | struct vidi_context *ctx = get_vidi_context(dev); |
| 325 | struct vidi_win_data *win_data; |
| 326 | int win = zpos; |
| 327 | |
| 328 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 329 | |
| 330 | if (ctx->suspended) |
| 331 | return; |
| 332 | |
| 333 | if (win == DEFAULT_ZPOS) |
| 334 | win = ctx->default_win; |
| 335 | |
| 336 | if (win < 0 || win > WINDOWS_NR) |
| 337 | return; |
| 338 | |
| 339 | win_data = &ctx->win_data[win]; |
| 340 | |
| 341 | win_data->enabled = true; |
| 342 | |
| 343 | DRM_DEBUG_KMS("dma_addr = 0x%x\n", win_data->dma_addr); |
| 344 | |
| 345 | if (ctx->vblank_on) |
| 346 | schedule_work(&ctx->work); |
| 347 | } |
| 348 | |
| 349 | static void vidi_win_disable(struct device *dev, int zpos) |
| 350 | { |
| 351 | struct vidi_context *ctx = get_vidi_context(dev); |
| 352 | struct vidi_win_data *win_data; |
| 353 | int win = zpos; |
| 354 | |
| 355 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 356 | |
| 357 | if (win == DEFAULT_ZPOS) |
| 358 | win = ctx->default_win; |
| 359 | |
| 360 | if (win < 0 || win > WINDOWS_NR) |
| 361 | return; |
| 362 | |
| 363 | win_data = &ctx->win_data[win]; |
| 364 | win_data->enabled = false; |
| 365 | |
| 366 | /* TODO. */ |
| 367 | } |
| 368 | |
| 369 | static struct exynos_drm_overlay_ops vidi_overlay_ops = { |
| 370 | .mode_set = vidi_win_mode_set, |
| 371 | .commit = vidi_win_commit, |
| 372 | .disable = vidi_win_disable, |
| 373 | }; |
| 374 | |
Joonyoung Shim | 677e84c | 2012-04-05 20:49:27 +0900 | [diff] [blame] | 375 | static struct exynos_drm_manager vidi_manager = { |
| 376 | .pipe = -1, |
| 377 | .ops = &vidi_manager_ops, |
| 378 | .overlay_ops = &vidi_overlay_ops, |
| 379 | .display_ops = &vidi_display_ops, |
| 380 | }; |
| 381 | |
Inki Dae | b73d123 | 2012-03-21 10:55:26 +0900 | [diff] [blame] | 382 | static void vidi_finish_pageflip(struct drm_device *drm_dev, int crtc) |
| 383 | { |
| 384 | struct exynos_drm_private *dev_priv = drm_dev->dev_private; |
| 385 | struct drm_pending_vblank_event *e, *t; |
| 386 | struct timeval now; |
| 387 | unsigned long flags; |
| 388 | bool is_checked = false; |
| 389 | |
| 390 | spin_lock_irqsave(&drm_dev->event_lock, flags); |
| 391 | |
| 392 | list_for_each_entry_safe(e, t, &dev_priv->pageflip_event_list, |
| 393 | base.link) { |
| 394 | /* if event's pipe isn't same as crtc then ignore it. */ |
| 395 | if (crtc != e->pipe) |
| 396 | continue; |
| 397 | |
| 398 | is_checked = true; |
| 399 | |
| 400 | do_gettimeofday(&now); |
| 401 | e->event.sequence = 0; |
| 402 | e->event.tv_sec = now.tv_sec; |
| 403 | e->event.tv_usec = now.tv_usec; |
| 404 | |
| 405 | list_move_tail(&e->base.link, &e->base.file_priv->event_list); |
| 406 | wake_up_interruptible(&e->base.file_priv->event_wait); |
| 407 | } |
| 408 | |
| 409 | if (is_checked) { |
| 410 | /* |
| 411 | * call drm_vblank_put only in case that drm_vblank_get was |
| 412 | * called. |
| 413 | */ |
| 414 | if (atomic_read(&drm_dev->vblank_refcount[crtc]) > 0) |
| 415 | drm_vblank_put(drm_dev, crtc); |
| 416 | |
| 417 | /* |
| 418 | * don't off vblank if vblank_disable_allowed is 1, |
| 419 | * because vblank would be off by timer handler. |
| 420 | */ |
| 421 | if (!drm_dev->vblank_disable_allowed) |
| 422 | drm_vblank_off(drm_dev, crtc); |
| 423 | } |
| 424 | |
| 425 | spin_unlock_irqrestore(&drm_dev->event_lock, flags); |
| 426 | } |
| 427 | |
| 428 | static void vidi_fake_vblank_handler(struct work_struct *work) |
| 429 | { |
| 430 | struct vidi_context *ctx = container_of(work, struct vidi_context, |
| 431 | work); |
| 432 | struct exynos_drm_subdrv *subdrv = &ctx->subdrv; |
Joonyoung Shim | 677e84c | 2012-04-05 20:49:27 +0900 | [diff] [blame] | 433 | struct exynos_drm_manager *manager = subdrv->manager; |
Inki Dae | b73d123 | 2012-03-21 10:55:26 +0900 | [diff] [blame] | 434 | |
| 435 | if (manager->pipe < 0) |
| 436 | return; |
| 437 | |
| 438 | /* refresh rate is about 50Hz. */ |
| 439 | usleep_range(16000, 20000); |
| 440 | |
| 441 | drm_handle_vblank(subdrv->drm_dev, manager->pipe); |
| 442 | vidi_finish_pageflip(subdrv->drm_dev, manager->pipe); |
| 443 | } |
| 444 | |
| 445 | static int vidi_subdrv_probe(struct drm_device *drm_dev, struct device *dev) |
| 446 | { |
| 447 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 448 | |
| 449 | /* |
| 450 | * enable drm irq mode. |
| 451 | * - with irq_enabled = 1, we can use the vblank feature. |
| 452 | * |
| 453 | * P.S. note that we wouldn't use drm irq handler but |
| 454 | * just specific driver own one instead because |
| 455 | * drm framework supports only one irq handler. |
| 456 | */ |
| 457 | drm_dev->irq_enabled = 1; |
| 458 | |
| 459 | /* |
| 460 | * with vblank_disable_allowed = 1, vblank interrupt will be disabled |
| 461 | * by drm timer once a current process gives up ownership of |
| 462 | * vblank event.(after drm_vblank_put function is called) |
| 463 | */ |
| 464 | drm_dev->vblank_disable_allowed = 1; |
| 465 | |
| 466 | return 0; |
| 467 | } |
| 468 | |
| 469 | static void vidi_subdrv_remove(struct drm_device *drm_dev) |
| 470 | { |
| 471 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 472 | |
| 473 | /* TODO. */ |
| 474 | } |
| 475 | |
| 476 | static int vidi_power_on(struct vidi_context *ctx, bool enable) |
| 477 | { |
| 478 | struct exynos_drm_subdrv *subdrv = &ctx->subdrv; |
Joonyoung Shim | 677e84c | 2012-04-05 20:49:27 +0900 | [diff] [blame] | 479 | struct device *dev = subdrv->dev; |
Inki Dae | b73d123 | 2012-03-21 10:55:26 +0900 | [diff] [blame] | 480 | |
| 481 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 482 | |
| 483 | if (enable != false && enable != true) |
| 484 | return -EINVAL; |
| 485 | |
| 486 | if (enable) { |
| 487 | ctx->suspended = false; |
| 488 | |
| 489 | /* if vblank was enabled status, enable it again. */ |
| 490 | if (test_and_clear_bit(0, &ctx->irq_flags)) |
| 491 | vidi_enable_vblank(dev); |
| 492 | |
| 493 | vidi_apply(dev); |
| 494 | } else { |
| 495 | ctx->suspended = true; |
| 496 | } |
| 497 | |
| 498 | return 0; |
| 499 | } |
| 500 | |
| 501 | static int vidi_show_connection(struct device *dev, |
| 502 | struct device_attribute *attr, char *buf) |
| 503 | { |
| 504 | int rc; |
| 505 | struct vidi_context *ctx = get_vidi_context(dev); |
| 506 | |
| 507 | mutex_lock(&ctx->lock); |
| 508 | |
| 509 | rc = sprintf(buf, "%d\n", ctx->connected); |
| 510 | |
| 511 | mutex_unlock(&ctx->lock); |
| 512 | |
| 513 | return rc; |
| 514 | } |
| 515 | |
| 516 | static int vidi_store_connection(struct device *dev, |
| 517 | struct device_attribute *attr, |
| 518 | const char *buf, size_t len) |
| 519 | { |
| 520 | struct vidi_context *ctx = get_vidi_context(dev); |
| 521 | int ret; |
| 522 | |
| 523 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 524 | |
| 525 | ret = kstrtoint(buf, 0, &ctx->connected); |
| 526 | if (ret) |
| 527 | return ret; |
| 528 | |
| 529 | if (ctx->connected > 1) |
| 530 | return -EINVAL; |
| 531 | |
Inki Dae | d07d39d | 2012-06-27 16:00:56 +0900 | [diff] [blame] | 532 | /* use fake edid data for test. */ |
| 533 | if (!ctx->raw_edid) |
| 534 | ctx->raw_edid = (struct edid *)fake_edid_info; |
| 535 | |
Inki Dae | d7b8478 | 2012-06-27 16:16:26 +0900 | [diff] [blame] | 536 | /* if raw_edid isn't same as fake data then it can't be tested. */ |
| 537 | if (ctx->raw_edid != (struct edid *)fake_edid_info) { |
| 538 | DRM_DEBUG_KMS("edid data is not fake data.\n"); |
| 539 | return -EINVAL; |
| 540 | } |
| 541 | |
Inki Dae | b73d123 | 2012-03-21 10:55:26 +0900 | [diff] [blame] | 542 | DRM_DEBUG_KMS("requested connection.\n"); |
| 543 | |
| 544 | drm_helper_hpd_irq_event(ctx->subdrv.drm_dev); |
| 545 | |
| 546 | return len; |
| 547 | } |
| 548 | |
| 549 | static DEVICE_ATTR(connection, 0644, vidi_show_connection, |
| 550 | vidi_store_connection); |
| 551 | |
| 552 | int vidi_connection_ioctl(struct drm_device *drm_dev, void *data, |
| 553 | struct drm_file *file_priv) |
| 554 | { |
| 555 | struct vidi_context *ctx = NULL; |
| 556 | struct drm_encoder *encoder; |
| 557 | struct exynos_drm_manager *manager; |
| 558 | struct exynos_drm_display_ops *display_ops; |
| 559 | struct drm_exynos_vidi_connection *vidi = data; |
Inki Dae | d3b62db | 2012-06-27 16:36:12 +0900 | [diff] [blame] | 560 | struct edid *raw_edid; |
| 561 | int edid_len; |
Inki Dae | b73d123 | 2012-03-21 10:55:26 +0900 | [diff] [blame] | 562 | |
| 563 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 564 | |
| 565 | if (!vidi) { |
| 566 | DRM_DEBUG_KMS("user data for vidi is null.\n"); |
| 567 | return -EINVAL; |
| 568 | } |
| 569 | |
Inki Dae | b73d123 | 2012-03-21 10:55:26 +0900 | [diff] [blame] | 570 | if (vidi->connection > 1) { |
| 571 | DRM_DEBUG_KMS("connection should be 0 or 1.\n"); |
| 572 | return -EINVAL; |
| 573 | } |
| 574 | |
| 575 | list_for_each_entry(encoder, &drm_dev->mode_config.encoder_list, |
| 576 | head) { |
| 577 | manager = exynos_drm_get_manager(encoder); |
| 578 | display_ops = manager->display_ops; |
| 579 | |
| 580 | if (display_ops->type == EXYNOS_DISPLAY_TYPE_VIDI) { |
| 581 | ctx = get_vidi_context(manager->dev); |
| 582 | break; |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | if (!ctx) { |
| 587 | DRM_DEBUG_KMS("not found virtual device type encoder.\n"); |
| 588 | return -EINVAL; |
| 589 | } |
| 590 | |
| 591 | if (ctx->connected == vidi->connection) { |
| 592 | DRM_DEBUG_KMS("same connection request.\n"); |
| 593 | return -EINVAL; |
| 594 | } |
| 595 | |
Inki Dae | d3b62db | 2012-06-27 16:36:12 +0900 | [diff] [blame] | 596 | if (vidi->connection) { |
| 597 | if (!vidi->edid) { |
| 598 | DRM_DEBUG_KMS("edid data is null.\n"); |
| 599 | return -EINVAL; |
| 600 | } |
Inki Dae | f91f2f3 | 2012-05-29 21:49:51 +0900 | [diff] [blame^] | 601 | raw_edid = (struct edid *)(uint32_t)vidi->edid; |
Inki Dae | d3b62db | 2012-06-27 16:36:12 +0900 | [diff] [blame] | 602 | edid_len = (1 + raw_edid->extensions) * EDID_LENGTH; |
| 603 | ctx->raw_edid = kzalloc(edid_len, GFP_KERNEL); |
| 604 | if (!ctx->raw_edid) { |
| 605 | DRM_DEBUG_KMS("failed to allocate raw_edid.\n"); |
| 606 | return -ENOMEM; |
| 607 | } |
| 608 | memcpy(ctx->raw_edid, raw_edid, edid_len); |
| 609 | } else { |
| 610 | /* |
| 611 | * with connection = 0, free raw_edid |
| 612 | * only if raw edid data isn't same as fake data. |
| 613 | */ |
| 614 | if (ctx->raw_edid && ctx->raw_edid != |
| 615 | (struct edid *)fake_edid_info) { |
| 616 | kfree(ctx->raw_edid); |
| 617 | ctx->raw_edid = NULL; |
| 618 | } |
| 619 | } |
Inki Dae | b73d123 | 2012-03-21 10:55:26 +0900 | [diff] [blame] | 620 | |
| 621 | ctx->connected = vidi->connection; |
| 622 | drm_helper_hpd_irq_event(ctx->subdrv.drm_dev); |
| 623 | |
| 624 | return 0; |
| 625 | } |
| 626 | |
| 627 | static int __devinit vidi_probe(struct platform_device *pdev) |
| 628 | { |
| 629 | struct device *dev = &pdev->dev; |
| 630 | struct vidi_context *ctx; |
| 631 | struct exynos_drm_subdrv *subdrv; |
| 632 | int ret; |
| 633 | |
| 634 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 635 | |
| 636 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
| 637 | if (!ctx) |
| 638 | return -ENOMEM; |
| 639 | |
| 640 | ctx->default_win = 0; |
| 641 | |
| 642 | INIT_WORK(&ctx->work, vidi_fake_vblank_handler); |
| 643 | |
Inki Dae | b73d123 | 2012-03-21 10:55:26 +0900 | [diff] [blame] | 644 | subdrv = &ctx->subdrv; |
Joonyoung Shim | 677e84c | 2012-04-05 20:49:27 +0900 | [diff] [blame] | 645 | subdrv->dev = dev; |
| 646 | subdrv->manager = &vidi_manager; |
Inki Dae | b73d123 | 2012-03-21 10:55:26 +0900 | [diff] [blame] | 647 | subdrv->probe = vidi_subdrv_probe; |
| 648 | subdrv->remove = vidi_subdrv_remove; |
Inki Dae | b73d123 | 2012-03-21 10:55:26 +0900 | [diff] [blame] | 649 | |
| 650 | mutex_init(&ctx->lock); |
| 651 | |
| 652 | platform_set_drvdata(pdev, ctx); |
| 653 | |
| 654 | ret = device_create_file(&pdev->dev, &dev_attr_connection); |
| 655 | if (ret < 0) |
| 656 | DRM_INFO("failed to create connection sysfs.\n"); |
| 657 | |
| 658 | exynos_drm_subdrv_register(subdrv); |
| 659 | |
| 660 | return 0; |
| 661 | } |
| 662 | |
| 663 | static int __devexit vidi_remove(struct platform_device *pdev) |
| 664 | { |
| 665 | struct vidi_context *ctx = platform_get_drvdata(pdev); |
| 666 | |
| 667 | DRM_DEBUG_KMS("%s\n", __FILE__); |
| 668 | |
| 669 | exynos_drm_subdrv_unregister(&ctx->subdrv); |
| 670 | |
Inki Dae | d3b62db | 2012-06-27 16:36:12 +0900 | [diff] [blame] | 671 | if (ctx->raw_edid != (struct edid *)fake_edid_info) { |
| 672 | kfree(ctx->raw_edid); |
| 673 | ctx->raw_edid = NULL; |
| 674 | } |
| 675 | |
Inki Dae | b73d123 | 2012-03-21 10:55:26 +0900 | [diff] [blame] | 676 | kfree(ctx); |
| 677 | |
| 678 | return 0; |
| 679 | } |
| 680 | |
| 681 | #ifdef CONFIG_PM_SLEEP |
| 682 | static int vidi_suspend(struct device *dev) |
| 683 | { |
| 684 | struct vidi_context *ctx = get_vidi_context(dev); |
| 685 | |
| 686 | return vidi_power_on(ctx, false); |
| 687 | } |
| 688 | |
| 689 | static int vidi_resume(struct device *dev) |
| 690 | { |
| 691 | struct vidi_context *ctx = get_vidi_context(dev); |
| 692 | |
| 693 | return vidi_power_on(ctx, true); |
| 694 | } |
| 695 | #endif |
| 696 | |
| 697 | static const struct dev_pm_ops vidi_pm_ops = { |
| 698 | SET_SYSTEM_SLEEP_PM_OPS(vidi_suspend, vidi_resume) |
| 699 | }; |
| 700 | |
| 701 | struct platform_driver vidi_driver = { |
| 702 | .probe = vidi_probe, |
| 703 | .remove = __devexit_p(vidi_remove), |
| 704 | .driver = { |
| 705 | .name = "exynos-drm-vidi", |
| 706 | .owner = THIS_MODULE, |
| 707 | .pm = &vidi_pm_ops, |
| 708 | }, |
| 709 | }; |