Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015, The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 and |
| 6 | * only version 2 as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | */ |
| 13 | |
| 14 | #include "msm_kms.h" |
| 15 | #include "dsi.h" |
| 16 | |
| 17 | struct msm_dsi_manager { |
| 18 | struct msm_dsi *dsi[DSI_MAX]; |
| 19 | |
| 20 | bool is_dual_panel; |
| 21 | bool is_sync_needed; |
| 22 | int master_panel_id; |
| 23 | }; |
| 24 | |
| 25 | static struct msm_dsi_manager msm_dsim_glb; |
| 26 | |
| 27 | #define IS_DUAL_PANEL() (msm_dsim_glb.is_dual_panel) |
| 28 | #define IS_SYNC_NEEDED() (msm_dsim_glb.is_sync_needed) |
| 29 | #define IS_MASTER_PANEL(id) (msm_dsim_glb.master_panel_id == id) |
| 30 | |
| 31 | static inline struct msm_dsi *dsi_mgr_get_dsi(int id) |
| 32 | { |
| 33 | return msm_dsim_glb.dsi[id]; |
| 34 | } |
| 35 | |
| 36 | static inline struct msm_dsi *dsi_mgr_get_other_dsi(int id) |
| 37 | { |
| 38 | return msm_dsim_glb.dsi[(id + 1) % DSI_MAX]; |
| 39 | } |
| 40 | |
| 41 | static int dsi_mgr_parse_dual_panel(struct device_node *np, int id) |
| 42 | { |
| 43 | struct msm_dsi_manager *msm_dsim = &msm_dsim_glb; |
| 44 | |
| 45 | /* We assume 2 dsi nodes have the same information of dual-panel and |
| 46 | * sync-mode, and only one node specifies master in case of dual mode. |
| 47 | */ |
| 48 | if (!msm_dsim->is_dual_panel) |
| 49 | msm_dsim->is_dual_panel = of_property_read_bool( |
| 50 | np, "qcom,dual-panel-mode"); |
| 51 | |
| 52 | if (msm_dsim->is_dual_panel) { |
| 53 | if (of_property_read_bool(np, "qcom,master-panel")) |
| 54 | msm_dsim->master_panel_id = id; |
| 55 | if (!msm_dsim->is_sync_needed) |
| 56 | msm_dsim->is_sync_needed = of_property_read_bool( |
| 57 | np, "qcom,sync-dual-panel"); |
| 58 | } |
| 59 | |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 | struct dsi_connector { |
| 64 | struct drm_connector base; |
| 65 | int id; |
| 66 | }; |
| 67 | |
| 68 | struct dsi_bridge { |
| 69 | struct drm_bridge base; |
| 70 | int id; |
| 71 | }; |
| 72 | |
| 73 | #define to_dsi_connector(x) container_of(x, struct dsi_connector, base) |
| 74 | #define to_dsi_bridge(x) container_of(x, struct dsi_bridge, base) |
| 75 | |
| 76 | static inline int dsi_mgr_connector_get_id(struct drm_connector *connector) |
| 77 | { |
| 78 | struct dsi_connector *dsi_connector = to_dsi_connector(connector); |
| 79 | return dsi_connector->id; |
| 80 | } |
| 81 | |
| 82 | static int dsi_mgr_bridge_get_id(struct drm_bridge *bridge) |
| 83 | { |
| 84 | struct dsi_bridge *dsi_bridge = to_dsi_bridge(bridge); |
| 85 | return dsi_bridge->id; |
| 86 | } |
| 87 | |
| 88 | static enum drm_connector_status dsi_mgr_connector_detect( |
| 89 | struct drm_connector *connector, bool force) |
| 90 | { |
| 91 | int id = dsi_mgr_connector_get_id(connector); |
| 92 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 93 | struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id); |
| 94 | struct msm_drm_private *priv = connector->dev->dev_private; |
| 95 | struct msm_kms *kms = priv->kms; |
| 96 | |
| 97 | DBG("id=%d", id); |
| 98 | if (!msm_dsi->panel) { |
| 99 | msm_dsi->panel = msm_dsi_host_get_panel(msm_dsi->host, |
| 100 | &msm_dsi->panel_flags); |
| 101 | |
| 102 | /* There is only 1 panel in the global panel list |
| 103 | * for dual panel mode. Therefore slave dsi should get |
| 104 | * the drm_panel instance from master dsi, and |
| 105 | * keep using the panel flags got from the current DSI link. |
| 106 | */ |
| 107 | if (!msm_dsi->panel && IS_DUAL_PANEL() && |
| 108 | !IS_MASTER_PANEL(id) && other_dsi) |
| 109 | msm_dsi->panel = msm_dsi_host_get_panel( |
| 110 | other_dsi->host, NULL); |
| 111 | |
| 112 | if (msm_dsi->panel && IS_DUAL_PANEL()) |
| 113 | drm_object_attach_property(&connector->base, |
| 114 | connector->dev->mode_config.tile_property, 0); |
| 115 | |
| 116 | /* Set split display info to kms once dual panel is connected |
| 117 | * to both hosts |
| 118 | */ |
| 119 | if (msm_dsi->panel && IS_DUAL_PANEL() && |
| 120 | other_dsi && other_dsi->panel) { |
| 121 | bool cmd_mode = !(msm_dsi->panel_flags & |
| 122 | MIPI_DSI_MODE_VIDEO); |
| 123 | struct drm_encoder *encoder = msm_dsi_get_encoder( |
| 124 | dsi_mgr_get_dsi(DSI_ENCODER_MASTER)); |
| 125 | struct drm_encoder *slave_enc = msm_dsi_get_encoder( |
| 126 | dsi_mgr_get_dsi(DSI_ENCODER_SLAVE)); |
| 127 | |
| 128 | if (kms->funcs->set_split_display) |
| 129 | kms->funcs->set_split_display(kms, encoder, |
| 130 | slave_enc, cmd_mode); |
| 131 | else |
| 132 | pr_err("mdp does not support dual panel\n"); |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | return msm_dsi->panel ? connector_status_connected : |
| 137 | connector_status_disconnected; |
| 138 | } |
| 139 | |
| 140 | static void dsi_mgr_connector_destroy(struct drm_connector *connector) |
| 141 | { |
| 142 | DBG(""); |
| 143 | drm_connector_unregister(connector); |
| 144 | drm_connector_cleanup(connector); |
| 145 | } |
| 146 | |
| 147 | static void dsi_dual_connector_fix_modes(struct drm_connector *connector) |
| 148 | { |
| 149 | struct drm_display_mode *mode, *m; |
| 150 | |
| 151 | /* Only support left-right mode */ |
| 152 | list_for_each_entry_safe(mode, m, &connector->probed_modes, head) { |
| 153 | mode->clock >>= 1; |
| 154 | mode->hdisplay >>= 1; |
| 155 | mode->hsync_start >>= 1; |
| 156 | mode->hsync_end >>= 1; |
| 157 | mode->htotal >>= 1; |
| 158 | drm_mode_set_name(mode); |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | static int dsi_dual_connector_tile_init( |
| 163 | struct drm_connector *connector, int id) |
| 164 | { |
| 165 | struct drm_display_mode *mode; |
| 166 | /* Fake topology id */ |
| 167 | char topo_id[8] = {'M', 'S', 'M', 'D', 'U', 'D', 'S', 'I'}; |
| 168 | |
| 169 | if (connector->tile_group) { |
| 170 | DBG("Tile property has been initialized"); |
| 171 | return 0; |
| 172 | } |
| 173 | |
| 174 | /* Use the first mode only for now */ |
| 175 | mode = list_first_entry(&connector->probed_modes, |
| 176 | struct drm_display_mode, |
| 177 | head); |
| 178 | if (!mode) |
| 179 | return -EINVAL; |
| 180 | |
| 181 | connector->tile_group = drm_mode_get_tile_group( |
| 182 | connector->dev, topo_id); |
| 183 | if (!connector->tile_group) |
| 184 | connector->tile_group = drm_mode_create_tile_group( |
| 185 | connector->dev, topo_id); |
| 186 | if (!connector->tile_group) { |
| 187 | pr_err("%s: failed to create tile group\n", __func__); |
| 188 | return -ENOMEM; |
| 189 | } |
| 190 | |
| 191 | connector->has_tile = true; |
| 192 | connector->tile_is_single_monitor = true; |
| 193 | |
| 194 | /* mode has been fixed */ |
| 195 | connector->tile_h_size = mode->hdisplay; |
| 196 | connector->tile_v_size = mode->vdisplay; |
| 197 | |
| 198 | /* Only support left-right mode */ |
| 199 | connector->num_h_tile = 2; |
| 200 | connector->num_v_tile = 1; |
| 201 | |
| 202 | connector->tile_v_loc = 0; |
| 203 | connector->tile_h_loc = (id == DSI_RIGHT) ? 1 : 0; |
| 204 | |
| 205 | return 0; |
| 206 | } |
| 207 | |
| 208 | static int dsi_mgr_connector_get_modes(struct drm_connector *connector) |
| 209 | { |
| 210 | int id = dsi_mgr_connector_get_id(connector); |
| 211 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 212 | struct drm_panel *panel = msm_dsi->panel; |
| 213 | int ret, num; |
| 214 | |
| 215 | if (!panel) |
| 216 | return 0; |
| 217 | |
| 218 | /* Since we have 2 connectors, but only 1 drm_panel in dual DSI mode, |
| 219 | * panel should not attach to any connector. |
| 220 | * Only temporarily attach panel to the current connector here, |
| 221 | * to let panel set mode to this connector. |
| 222 | */ |
| 223 | drm_panel_attach(panel, connector); |
| 224 | num = drm_panel_get_modes(panel); |
| 225 | drm_panel_detach(panel); |
| 226 | if (!num) |
| 227 | return 0; |
| 228 | |
| 229 | if (IS_DUAL_PANEL()) { |
| 230 | /* report half resolution to user */ |
| 231 | dsi_dual_connector_fix_modes(connector); |
| 232 | ret = dsi_dual_connector_tile_init(connector, id); |
| 233 | if (ret) |
| 234 | return ret; |
| 235 | ret = drm_mode_connector_set_tile_property(connector); |
| 236 | if (ret) { |
| 237 | pr_err("%s: set tile property failed, %d\n", |
| 238 | __func__, ret); |
| 239 | return ret; |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | return num; |
| 244 | } |
| 245 | |
| 246 | static int dsi_mgr_connector_mode_valid(struct drm_connector *connector, |
| 247 | struct drm_display_mode *mode) |
| 248 | { |
| 249 | int id = dsi_mgr_connector_get_id(connector); |
| 250 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 251 | struct drm_encoder *encoder = msm_dsi_get_encoder(msm_dsi); |
| 252 | struct msm_drm_private *priv = connector->dev->dev_private; |
| 253 | struct msm_kms *kms = priv->kms; |
| 254 | long actual, requested; |
| 255 | |
| 256 | DBG(""); |
| 257 | requested = 1000 * mode->clock; |
| 258 | actual = kms->funcs->round_pixclk(kms, requested, encoder); |
| 259 | |
| 260 | DBG("requested=%ld, actual=%ld", requested, actual); |
| 261 | if (actual != requested) |
| 262 | return MODE_CLOCK_RANGE; |
| 263 | |
| 264 | return MODE_OK; |
| 265 | } |
| 266 | |
| 267 | static struct drm_encoder * |
| 268 | dsi_mgr_connector_best_encoder(struct drm_connector *connector) |
| 269 | { |
| 270 | int id = dsi_mgr_connector_get_id(connector); |
| 271 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 272 | |
| 273 | DBG(""); |
| 274 | return msm_dsi_get_encoder(msm_dsi); |
| 275 | } |
| 276 | |
| 277 | static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge) |
| 278 | { |
| 279 | int id = dsi_mgr_bridge_get_id(bridge); |
| 280 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 281 | struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1); |
| 282 | struct mipi_dsi_host *host = msm_dsi->host; |
| 283 | struct drm_panel *panel = msm_dsi->panel; |
| 284 | bool is_dual_panel = IS_DUAL_PANEL(); |
| 285 | int ret; |
| 286 | |
| 287 | DBG("id=%d", id); |
| 288 | if (!panel || (is_dual_panel && (DSI_1 == id))) |
| 289 | return; |
| 290 | |
| 291 | ret = msm_dsi_host_power_on(host); |
| 292 | if (ret) { |
| 293 | pr_err("%s: power on host %d failed, %d\n", __func__, id, ret); |
| 294 | goto host_on_fail; |
| 295 | } |
| 296 | |
| 297 | if (is_dual_panel && msm_dsi1) { |
| 298 | ret = msm_dsi_host_power_on(msm_dsi1->host); |
| 299 | if (ret) { |
| 300 | pr_err("%s: power on host1 failed, %d\n", |
| 301 | __func__, ret); |
| 302 | goto host1_on_fail; |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | /* Always call panel functions once, because even for dual panels, |
| 307 | * there is only one drm_panel instance. |
| 308 | */ |
| 309 | ret = drm_panel_prepare(panel); |
| 310 | if (ret) { |
| 311 | pr_err("%s: prepare panel %d failed, %d\n", __func__, id, ret); |
| 312 | goto panel_prep_fail; |
| 313 | } |
| 314 | |
| 315 | ret = msm_dsi_host_enable(host); |
| 316 | if (ret) { |
| 317 | pr_err("%s: enable host %d failed, %d\n", __func__, id, ret); |
| 318 | goto host_en_fail; |
| 319 | } |
| 320 | |
| 321 | if (is_dual_panel && msm_dsi1) { |
| 322 | ret = msm_dsi_host_enable(msm_dsi1->host); |
| 323 | if (ret) { |
| 324 | pr_err("%s: enable host1 failed, %d\n", __func__, ret); |
| 325 | goto host1_en_fail; |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | ret = drm_panel_enable(panel); |
| 330 | if (ret) { |
| 331 | pr_err("%s: enable panel %d failed, %d\n", __func__, id, ret); |
| 332 | goto panel_en_fail; |
| 333 | } |
| 334 | |
| 335 | return; |
| 336 | |
| 337 | panel_en_fail: |
| 338 | if (is_dual_panel && msm_dsi1) |
| 339 | msm_dsi_host_disable(msm_dsi1->host); |
| 340 | host1_en_fail: |
| 341 | msm_dsi_host_disable(host); |
| 342 | host_en_fail: |
| 343 | drm_panel_unprepare(panel); |
| 344 | panel_prep_fail: |
| 345 | if (is_dual_panel && msm_dsi1) |
| 346 | msm_dsi_host_power_off(msm_dsi1->host); |
| 347 | host1_on_fail: |
| 348 | msm_dsi_host_power_off(host); |
| 349 | host_on_fail: |
| 350 | return; |
| 351 | } |
| 352 | |
| 353 | static void dsi_mgr_bridge_enable(struct drm_bridge *bridge) |
| 354 | { |
| 355 | DBG(""); |
| 356 | } |
| 357 | |
| 358 | static void dsi_mgr_bridge_disable(struct drm_bridge *bridge) |
| 359 | { |
| 360 | DBG(""); |
| 361 | } |
| 362 | |
| 363 | static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge) |
| 364 | { |
| 365 | int id = dsi_mgr_bridge_get_id(bridge); |
| 366 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 367 | struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1); |
| 368 | struct mipi_dsi_host *host = msm_dsi->host; |
| 369 | struct drm_panel *panel = msm_dsi->panel; |
| 370 | bool is_dual_panel = IS_DUAL_PANEL(); |
| 371 | int ret; |
| 372 | |
| 373 | DBG("id=%d", id); |
| 374 | |
| 375 | if (!panel || (is_dual_panel && (DSI_1 == id))) |
| 376 | return; |
| 377 | |
| 378 | ret = drm_panel_disable(panel); |
| 379 | if (ret) |
| 380 | pr_err("%s: Panel %d OFF failed, %d\n", __func__, id, ret); |
| 381 | |
| 382 | ret = msm_dsi_host_disable(host); |
| 383 | if (ret) |
| 384 | pr_err("%s: host %d disable failed, %d\n", __func__, id, ret); |
| 385 | |
| 386 | if (is_dual_panel && msm_dsi1) { |
| 387 | ret = msm_dsi_host_disable(msm_dsi1->host); |
| 388 | if (ret) |
| 389 | pr_err("%s: host1 disable failed, %d\n", __func__, ret); |
| 390 | } |
| 391 | |
| 392 | ret = drm_panel_unprepare(panel); |
| 393 | if (ret) |
| 394 | pr_err("%s: Panel %d unprepare failed,%d\n", __func__, id, ret); |
| 395 | |
| 396 | ret = msm_dsi_host_power_off(host); |
| 397 | if (ret) |
| 398 | pr_err("%s: host %d power off failed,%d\n", __func__, id, ret); |
| 399 | |
| 400 | if (is_dual_panel && msm_dsi1) { |
| 401 | ret = msm_dsi_host_power_off(msm_dsi1->host); |
| 402 | if (ret) |
| 403 | pr_err("%s: host1 power off failed, %d\n", |
| 404 | __func__, ret); |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | static void dsi_mgr_bridge_mode_set(struct drm_bridge *bridge, |
| 409 | struct drm_display_mode *mode, |
| 410 | struct drm_display_mode *adjusted_mode) |
| 411 | { |
| 412 | int id = dsi_mgr_bridge_get_id(bridge); |
| 413 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 414 | struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id); |
| 415 | struct mipi_dsi_host *host = msm_dsi->host; |
| 416 | bool is_dual_panel = IS_DUAL_PANEL(); |
| 417 | |
| 418 | DBG("set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x", |
| 419 | mode->base.id, mode->name, |
| 420 | mode->vrefresh, mode->clock, |
| 421 | mode->hdisplay, mode->hsync_start, |
| 422 | mode->hsync_end, mode->htotal, |
| 423 | mode->vdisplay, mode->vsync_start, |
| 424 | mode->vsync_end, mode->vtotal, |
| 425 | mode->type, mode->flags); |
| 426 | |
| 427 | if (is_dual_panel && (DSI_1 == id)) |
| 428 | return; |
| 429 | |
| 430 | msm_dsi_host_set_display_mode(host, adjusted_mode); |
| 431 | if (is_dual_panel && other_dsi) |
| 432 | msm_dsi_host_set_display_mode(other_dsi->host, adjusted_mode); |
| 433 | } |
| 434 | |
| 435 | static const struct drm_connector_funcs dsi_mgr_connector_funcs = { |
| 436 | .dpms = drm_atomic_helper_connector_dpms, |
| 437 | .detect = dsi_mgr_connector_detect, |
| 438 | .fill_modes = drm_helper_probe_single_connector_modes, |
| 439 | .destroy = dsi_mgr_connector_destroy, |
| 440 | .reset = drm_atomic_helper_connector_reset, |
| 441 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
| 442 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
| 443 | }; |
| 444 | |
| 445 | static const struct drm_connector_helper_funcs dsi_mgr_conn_helper_funcs = { |
| 446 | .get_modes = dsi_mgr_connector_get_modes, |
| 447 | .mode_valid = dsi_mgr_connector_mode_valid, |
| 448 | .best_encoder = dsi_mgr_connector_best_encoder, |
| 449 | }; |
| 450 | |
| 451 | static const struct drm_bridge_funcs dsi_mgr_bridge_funcs = { |
| 452 | .pre_enable = dsi_mgr_bridge_pre_enable, |
| 453 | .enable = dsi_mgr_bridge_enable, |
| 454 | .disable = dsi_mgr_bridge_disable, |
| 455 | .post_disable = dsi_mgr_bridge_post_disable, |
| 456 | .mode_set = dsi_mgr_bridge_mode_set, |
| 457 | }; |
| 458 | |
| 459 | /* initialize connector */ |
| 460 | struct drm_connector *msm_dsi_manager_connector_init(u8 id) |
| 461 | { |
| 462 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 463 | struct drm_connector *connector = NULL; |
| 464 | struct dsi_connector *dsi_connector; |
| 465 | int ret; |
| 466 | |
| 467 | dsi_connector = devm_kzalloc(msm_dsi->dev->dev, |
| 468 | sizeof(*dsi_connector), GFP_KERNEL); |
| 469 | if (!dsi_connector) { |
| 470 | ret = -ENOMEM; |
| 471 | goto fail; |
| 472 | } |
| 473 | |
| 474 | dsi_connector->id = id; |
| 475 | |
| 476 | connector = &dsi_connector->base; |
| 477 | |
| 478 | ret = drm_connector_init(msm_dsi->dev, connector, |
| 479 | &dsi_mgr_connector_funcs, DRM_MODE_CONNECTOR_DSI); |
| 480 | if (ret) |
| 481 | goto fail; |
| 482 | |
| 483 | drm_connector_helper_add(connector, &dsi_mgr_conn_helper_funcs); |
| 484 | |
| 485 | /* Enable HPD to let hpd event is handled |
| 486 | * when panel is attached to the host. |
| 487 | */ |
| 488 | connector->polled = DRM_CONNECTOR_POLL_HPD; |
| 489 | |
| 490 | /* Display driver doesn't support interlace now. */ |
| 491 | connector->interlace_allowed = 0; |
| 492 | connector->doublescan_allowed = 0; |
| 493 | |
| 494 | ret = drm_connector_register(connector); |
| 495 | if (ret) |
| 496 | goto fail; |
| 497 | |
| 498 | return connector; |
| 499 | |
| 500 | fail: |
| 501 | if (connector) |
| 502 | dsi_mgr_connector_destroy(connector); |
| 503 | |
| 504 | return ERR_PTR(ret); |
| 505 | } |
| 506 | |
| 507 | /* initialize bridge */ |
| 508 | struct drm_bridge *msm_dsi_manager_bridge_init(u8 id) |
| 509 | { |
| 510 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 511 | struct drm_bridge *bridge = NULL; |
| 512 | struct dsi_bridge *dsi_bridge; |
| 513 | int ret; |
| 514 | |
| 515 | dsi_bridge = devm_kzalloc(msm_dsi->dev->dev, |
| 516 | sizeof(*dsi_bridge), GFP_KERNEL); |
| 517 | if (!dsi_bridge) { |
| 518 | ret = -ENOMEM; |
| 519 | goto fail; |
| 520 | } |
| 521 | |
| 522 | dsi_bridge->id = id; |
| 523 | |
| 524 | bridge = &dsi_bridge->base; |
| 525 | bridge->funcs = &dsi_mgr_bridge_funcs; |
| 526 | |
| 527 | ret = drm_bridge_attach(msm_dsi->dev, bridge); |
| 528 | if (ret) |
| 529 | goto fail; |
| 530 | |
| 531 | return bridge; |
| 532 | |
| 533 | fail: |
| 534 | if (bridge) |
| 535 | msm_dsi_manager_bridge_destroy(bridge); |
| 536 | |
| 537 | return ERR_PTR(ret); |
| 538 | } |
| 539 | |
| 540 | void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge) |
| 541 | { |
| 542 | } |
| 543 | |
| 544 | int msm_dsi_manager_phy_enable(int id, |
| 545 | const unsigned long bit_rate, const unsigned long esc_rate, |
| 546 | u32 *clk_pre, u32 *clk_post) |
| 547 | { |
| 548 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 549 | struct msm_dsi_phy *phy = msm_dsi->phy; |
| 550 | int ret; |
| 551 | |
| 552 | ret = msm_dsi_phy_enable(phy, IS_DUAL_PANEL(), bit_rate, esc_rate); |
| 553 | if (ret) |
| 554 | return ret; |
| 555 | |
| 556 | msm_dsi->phy_enabled = true; |
| 557 | msm_dsi_phy_get_clk_pre_post(phy, clk_pre, clk_post); |
| 558 | |
| 559 | return 0; |
| 560 | } |
| 561 | |
| 562 | void msm_dsi_manager_phy_disable(int id) |
| 563 | { |
| 564 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 565 | struct msm_dsi *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER); |
| 566 | struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE); |
| 567 | struct msm_dsi_phy *phy = msm_dsi->phy; |
| 568 | |
| 569 | /* disable DSI phy |
| 570 | * In dual-dsi configuration, the phy should be disabled for the |
| 571 | * first controller only when the second controller is disabled. |
| 572 | */ |
| 573 | msm_dsi->phy_enabled = false; |
| 574 | if (IS_DUAL_PANEL() && mdsi && sdsi) { |
| 575 | if (!mdsi->phy_enabled && !sdsi->phy_enabled) { |
| 576 | msm_dsi_phy_disable(sdsi->phy); |
| 577 | msm_dsi_phy_disable(mdsi->phy); |
| 578 | } |
| 579 | } else { |
| 580 | msm_dsi_phy_disable(phy); |
| 581 | } |
| 582 | } |
| 583 | |
| 584 | int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg) |
| 585 | { |
| 586 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 587 | struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0); |
| 588 | struct mipi_dsi_host *host = msm_dsi->host; |
| 589 | bool is_read = (msg->rx_buf && msg->rx_len); |
| 590 | bool need_sync = (IS_SYNC_NEEDED() && !is_read); |
| 591 | int ret; |
| 592 | |
| 593 | if (!msg->tx_buf || !msg->tx_len) |
| 594 | return 0; |
| 595 | |
| 596 | /* In dual master case, panel requires the same commands sent to |
| 597 | * both DSI links. Host issues the command trigger to both links |
| 598 | * when DSI_1 calls the cmd transfer function, no matter it happens |
| 599 | * before or after DSI_0 cmd transfer. |
| 600 | */ |
| 601 | if (need_sync && (id == DSI_0)) |
| 602 | return is_read ? msg->rx_len : msg->tx_len; |
| 603 | |
| 604 | if (need_sync && msm_dsi0) { |
| 605 | ret = msm_dsi_host_xfer_prepare(msm_dsi0->host, msg); |
| 606 | if (ret) { |
| 607 | pr_err("%s: failed to prepare non-trigger host, %d\n", |
| 608 | __func__, ret); |
| 609 | return ret; |
| 610 | } |
| 611 | } |
| 612 | ret = msm_dsi_host_xfer_prepare(host, msg); |
| 613 | if (ret) { |
| 614 | pr_err("%s: failed to prepare host, %d\n", __func__, ret); |
| 615 | goto restore_host0; |
| 616 | } |
| 617 | |
| 618 | ret = is_read ? msm_dsi_host_cmd_rx(host, msg) : |
| 619 | msm_dsi_host_cmd_tx(host, msg); |
| 620 | |
| 621 | msm_dsi_host_xfer_restore(host, msg); |
| 622 | |
| 623 | restore_host0: |
| 624 | if (need_sync && msm_dsi0) |
| 625 | msm_dsi_host_xfer_restore(msm_dsi0->host, msg); |
| 626 | |
| 627 | return ret; |
| 628 | } |
| 629 | |
| 630 | bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 iova, u32 len) |
| 631 | { |
| 632 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 633 | struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0); |
| 634 | struct mipi_dsi_host *host = msm_dsi->host; |
| 635 | |
| 636 | if (IS_SYNC_NEEDED() && (id == DSI_0)) |
| 637 | return false; |
| 638 | |
| 639 | if (IS_SYNC_NEEDED() && msm_dsi0) |
| 640 | msm_dsi_host_cmd_xfer_commit(msm_dsi0->host, iova, len); |
| 641 | |
| 642 | msm_dsi_host_cmd_xfer_commit(host, iova, len); |
| 643 | |
| 644 | return true; |
| 645 | } |
| 646 | |
| 647 | int msm_dsi_manager_register(struct msm_dsi *msm_dsi) |
| 648 | { |
| 649 | struct msm_dsi_manager *msm_dsim = &msm_dsim_glb; |
| 650 | int id = msm_dsi->id; |
| 651 | struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id); |
| 652 | int ret; |
| 653 | |
| 654 | if (id > DSI_MAX) { |
| 655 | pr_err("%s: invalid id %d\n", __func__, id); |
| 656 | return -EINVAL; |
| 657 | } |
| 658 | |
| 659 | if (msm_dsim->dsi[id]) { |
| 660 | pr_err("%s: dsi%d already registered\n", __func__, id); |
| 661 | return -EBUSY; |
| 662 | } |
| 663 | |
| 664 | msm_dsim->dsi[id] = msm_dsi; |
| 665 | |
| 666 | ret = dsi_mgr_parse_dual_panel(msm_dsi->pdev->dev.of_node, id); |
| 667 | if (ret) { |
| 668 | pr_err("%s: failed to parse dual panel info\n", __func__); |
| 669 | return ret; |
| 670 | } |
| 671 | |
| 672 | if (!IS_DUAL_PANEL()) { |
| 673 | ret = msm_dsi_host_register(msm_dsi->host, true); |
| 674 | } else if (!other_dsi) { |
| 675 | return 0; |
| 676 | } else { |
| 677 | struct msm_dsi *mdsi = IS_MASTER_PANEL(id) ? |
| 678 | msm_dsi : other_dsi; |
| 679 | struct msm_dsi *sdsi = IS_MASTER_PANEL(id) ? |
| 680 | other_dsi : msm_dsi; |
| 681 | /* Register slave host first, so that slave DSI device |
| 682 | * has a chance to probe, and do not block the master |
| 683 | * DSI device's probe. |
| 684 | * Also, do not check defer for the slave host, |
| 685 | * because only master DSI device adds the panel to global |
| 686 | * panel list. The panel's device is the master DSI device. |
| 687 | */ |
| 688 | ret = msm_dsi_host_register(sdsi->host, false); |
| 689 | if (ret) |
| 690 | return ret; |
| 691 | ret = msm_dsi_host_register(mdsi->host, true); |
| 692 | } |
| 693 | |
| 694 | return ret; |
| 695 | } |
| 696 | |
| 697 | void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi) |
| 698 | { |
| 699 | struct msm_dsi_manager *msm_dsim = &msm_dsim_glb; |
| 700 | |
| 701 | if (msm_dsi->host) |
| 702 | msm_dsi_host_unregister(msm_dsi->host); |
| 703 | msm_dsim->dsi[msm_dsi->id] = NULL; |
| 704 | } |
| 705 | |