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 | |
Hai Li | 13351cd | 2015-06-10 13:18:17 -0400 | [diff] [blame] | 17 | #define DSI_CLOCK_MASTER DSI_0 |
| 18 | #define DSI_CLOCK_SLAVE DSI_1 |
| 19 | |
| 20 | #define DSI_LEFT DSI_0 |
| 21 | #define DSI_RIGHT DSI_1 |
| 22 | |
| 23 | /* According to the current drm framework sequence, take the encoder of |
| 24 | * DSI_1 as master encoder |
| 25 | */ |
| 26 | #define DSI_ENCODER_MASTER DSI_1 |
| 27 | #define DSI_ENCODER_SLAVE DSI_0 |
| 28 | |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 29 | struct msm_dsi_manager { |
| 30 | struct msm_dsi *dsi[DSI_MAX]; |
| 31 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 32 | bool is_dual_dsi; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 33 | bool is_sync_needed; |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 34 | int master_dsi_link_id; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 35 | }; |
| 36 | |
| 37 | static struct msm_dsi_manager msm_dsim_glb; |
| 38 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 39 | #define IS_DUAL_DSI() (msm_dsim_glb.is_dual_dsi) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 40 | #define IS_SYNC_NEEDED() (msm_dsim_glb.is_sync_needed) |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 41 | #define IS_MASTER_DSI_LINK(id) (msm_dsim_glb.master_dsi_link_id == id) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 42 | |
| 43 | static inline struct msm_dsi *dsi_mgr_get_dsi(int id) |
| 44 | { |
| 45 | return msm_dsim_glb.dsi[id]; |
| 46 | } |
| 47 | |
| 48 | static inline struct msm_dsi *dsi_mgr_get_other_dsi(int id) |
| 49 | { |
| 50 | return msm_dsim_glb.dsi[(id + 1) % DSI_MAX]; |
| 51 | } |
| 52 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 53 | static int dsi_mgr_parse_dual_dsi(struct device_node *np, int id) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 54 | { |
| 55 | struct msm_dsi_manager *msm_dsim = &msm_dsim_glb; |
| 56 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 57 | /* We assume 2 dsi nodes have the same information of dual-dsi and |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 58 | * sync-mode, and only one node specifies master in case of dual mode. |
| 59 | */ |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 60 | if (!msm_dsim->is_dual_dsi) |
| 61 | msm_dsim->is_dual_dsi = of_property_read_bool( |
| 62 | np, "qcom,dual-dsi-mode"); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 63 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 64 | if (msm_dsim->is_dual_dsi) { |
| 65 | if (of_property_read_bool(np, "qcom,master-dsi")) |
| 66 | msm_dsim->master_dsi_link_id = id; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 67 | if (!msm_dsim->is_sync_needed) |
| 68 | msm_dsim->is_sync_needed = of_property_read_bool( |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 69 | np, "qcom,sync-dual-dsi"); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 70 | } |
| 71 | |
| 72 | return 0; |
| 73 | } |
| 74 | |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 75 | static int dsi_mgr_host_register(int id) |
| 76 | { |
| 77 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 78 | struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id); |
| 79 | struct msm_dsi *clk_master_dsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER); |
| 80 | struct msm_dsi_pll *src_pll; |
| 81 | int ret; |
| 82 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 83 | if (!IS_DUAL_DSI()) { |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 84 | ret = msm_dsi_host_register(msm_dsi->host, true); |
| 85 | if (ret) |
| 86 | return ret; |
| 87 | |
| 88 | src_pll = msm_dsi_phy_get_pll(msm_dsi->phy); |
| 89 | ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll); |
| 90 | } else if (!other_dsi) { |
| 91 | ret = 0; |
| 92 | } else { |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 93 | struct msm_dsi *mdsi = IS_MASTER_DSI_LINK(id) ? |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 94 | msm_dsi : other_dsi; |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 95 | struct msm_dsi *sdsi = IS_MASTER_DSI_LINK(id) ? |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 96 | other_dsi : msm_dsi; |
| 97 | /* Register slave host first, so that slave DSI device |
| 98 | * has a chance to probe, and do not block the master |
| 99 | * DSI device's probe. |
| 100 | * Also, do not check defer for the slave host, |
| 101 | * because only master DSI device adds the panel to global |
| 102 | * panel list. The panel's device is the master DSI device. |
| 103 | */ |
| 104 | ret = msm_dsi_host_register(sdsi->host, false); |
| 105 | if (ret) |
| 106 | return ret; |
| 107 | ret = msm_dsi_host_register(mdsi->host, true); |
| 108 | if (ret) |
| 109 | return ret; |
| 110 | |
| 111 | /* PLL0 is to drive both 2 DSI link clocks in Dual DSI mode. */ |
| 112 | src_pll = msm_dsi_phy_get_pll(clk_master_dsi->phy); |
| 113 | ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll); |
| 114 | if (ret) |
| 115 | return ret; |
| 116 | ret = msm_dsi_host_set_src_pll(other_dsi->host, src_pll); |
| 117 | } |
| 118 | |
| 119 | return ret; |
| 120 | } |
| 121 | |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 122 | struct dsi_connector { |
| 123 | struct drm_connector base; |
| 124 | int id; |
| 125 | }; |
| 126 | |
| 127 | struct dsi_bridge { |
| 128 | struct drm_bridge base; |
| 129 | int id; |
| 130 | }; |
| 131 | |
| 132 | #define to_dsi_connector(x) container_of(x, struct dsi_connector, base) |
| 133 | #define to_dsi_bridge(x) container_of(x, struct dsi_bridge, base) |
| 134 | |
| 135 | static inline int dsi_mgr_connector_get_id(struct drm_connector *connector) |
| 136 | { |
| 137 | struct dsi_connector *dsi_connector = to_dsi_connector(connector); |
| 138 | return dsi_connector->id; |
| 139 | } |
| 140 | |
| 141 | static int dsi_mgr_bridge_get_id(struct drm_bridge *bridge) |
| 142 | { |
| 143 | struct dsi_bridge *dsi_bridge = to_dsi_bridge(bridge); |
| 144 | return dsi_bridge->id; |
| 145 | } |
| 146 | |
| 147 | static enum drm_connector_status dsi_mgr_connector_detect( |
| 148 | struct drm_connector *connector, bool force) |
| 149 | { |
| 150 | int id = dsi_mgr_connector_get_id(connector); |
| 151 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 152 | struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id); |
| 153 | struct msm_drm_private *priv = connector->dev->dev_private; |
| 154 | struct msm_kms *kms = priv->kms; |
| 155 | |
| 156 | DBG("id=%d", id); |
| 157 | if (!msm_dsi->panel) { |
| 158 | msm_dsi->panel = msm_dsi_host_get_panel(msm_dsi->host, |
Archit Taneja | a9ddac9 | 2015-08-03 14:05:45 +0530 | [diff] [blame] | 159 | &msm_dsi->device_flags); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 160 | |
| 161 | /* There is only 1 panel in the global panel list |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 162 | * for dual DSI mode. Therefore slave dsi should get |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 163 | * the drm_panel instance from master dsi, and |
| 164 | * keep using the panel flags got from the current DSI link. |
| 165 | */ |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 166 | if (!msm_dsi->panel && IS_DUAL_DSI() && |
| 167 | !IS_MASTER_DSI_LINK(id) && other_dsi) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 168 | msm_dsi->panel = msm_dsi_host_get_panel( |
| 169 | other_dsi->host, NULL); |
| 170 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 171 | if (msm_dsi->panel && IS_DUAL_DSI()) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 172 | drm_object_attach_property(&connector->base, |
| 173 | connector->dev->mode_config.tile_property, 0); |
| 174 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 175 | /* Set split display info to kms once dual DSI panel is |
| 176 | * connected to both hosts. |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 177 | */ |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 178 | if (msm_dsi->panel && IS_DUAL_DSI() && |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 179 | other_dsi && other_dsi->panel) { |
Archit Taneja | a9ddac9 | 2015-08-03 14:05:45 +0530 | [diff] [blame] | 180 | bool cmd_mode = !(msm_dsi->device_flags & |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 181 | MIPI_DSI_MODE_VIDEO); |
| 182 | struct drm_encoder *encoder = msm_dsi_get_encoder( |
| 183 | dsi_mgr_get_dsi(DSI_ENCODER_MASTER)); |
| 184 | struct drm_encoder *slave_enc = msm_dsi_get_encoder( |
| 185 | dsi_mgr_get_dsi(DSI_ENCODER_SLAVE)); |
| 186 | |
| 187 | if (kms->funcs->set_split_display) |
| 188 | kms->funcs->set_split_display(kms, encoder, |
| 189 | slave_enc, cmd_mode); |
| 190 | else |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 191 | pr_err("mdp does not support dual DSI\n"); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 192 | } |
| 193 | } |
| 194 | |
| 195 | return msm_dsi->panel ? connector_status_connected : |
| 196 | connector_status_disconnected; |
| 197 | } |
| 198 | |
| 199 | static void dsi_mgr_connector_destroy(struct drm_connector *connector) |
| 200 | { |
| 201 | DBG(""); |
| 202 | drm_connector_unregister(connector); |
| 203 | drm_connector_cleanup(connector); |
| 204 | } |
| 205 | |
| 206 | static void dsi_dual_connector_fix_modes(struct drm_connector *connector) |
| 207 | { |
| 208 | struct drm_display_mode *mode, *m; |
| 209 | |
| 210 | /* Only support left-right mode */ |
| 211 | list_for_each_entry_safe(mode, m, &connector->probed_modes, head) { |
| 212 | mode->clock >>= 1; |
| 213 | mode->hdisplay >>= 1; |
| 214 | mode->hsync_start >>= 1; |
| 215 | mode->hsync_end >>= 1; |
| 216 | mode->htotal >>= 1; |
| 217 | drm_mode_set_name(mode); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | static int dsi_dual_connector_tile_init( |
| 222 | struct drm_connector *connector, int id) |
| 223 | { |
| 224 | struct drm_display_mode *mode; |
| 225 | /* Fake topology id */ |
| 226 | char topo_id[8] = {'M', 'S', 'M', 'D', 'U', 'D', 'S', 'I'}; |
| 227 | |
| 228 | if (connector->tile_group) { |
| 229 | DBG("Tile property has been initialized"); |
| 230 | return 0; |
| 231 | } |
| 232 | |
| 233 | /* Use the first mode only for now */ |
| 234 | mode = list_first_entry(&connector->probed_modes, |
| 235 | struct drm_display_mode, |
| 236 | head); |
| 237 | if (!mode) |
| 238 | return -EINVAL; |
| 239 | |
| 240 | connector->tile_group = drm_mode_get_tile_group( |
| 241 | connector->dev, topo_id); |
| 242 | if (!connector->tile_group) |
| 243 | connector->tile_group = drm_mode_create_tile_group( |
| 244 | connector->dev, topo_id); |
| 245 | if (!connector->tile_group) { |
| 246 | pr_err("%s: failed to create tile group\n", __func__); |
| 247 | return -ENOMEM; |
| 248 | } |
| 249 | |
| 250 | connector->has_tile = true; |
| 251 | connector->tile_is_single_monitor = true; |
| 252 | |
| 253 | /* mode has been fixed */ |
| 254 | connector->tile_h_size = mode->hdisplay; |
| 255 | connector->tile_v_size = mode->vdisplay; |
| 256 | |
| 257 | /* Only support left-right mode */ |
| 258 | connector->num_h_tile = 2; |
| 259 | connector->num_v_tile = 1; |
| 260 | |
| 261 | connector->tile_v_loc = 0; |
| 262 | connector->tile_h_loc = (id == DSI_RIGHT) ? 1 : 0; |
| 263 | |
| 264 | return 0; |
| 265 | } |
| 266 | |
| 267 | static int dsi_mgr_connector_get_modes(struct drm_connector *connector) |
| 268 | { |
| 269 | int id = dsi_mgr_connector_get_id(connector); |
| 270 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 271 | struct drm_panel *panel = msm_dsi->panel; |
| 272 | int ret, num; |
| 273 | |
| 274 | if (!panel) |
| 275 | return 0; |
| 276 | |
| 277 | /* Since we have 2 connectors, but only 1 drm_panel in dual DSI mode, |
| 278 | * panel should not attach to any connector. |
| 279 | * Only temporarily attach panel to the current connector here, |
| 280 | * to let panel set mode to this connector. |
| 281 | */ |
| 282 | drm_panel_attach(panel, connector); |
| 283 | num = drm_panel_get_modes(panel); |
| 284 | drm_panel_detach(panel); |
| 285 | if (!num) |
| 286 | return 0; |
| 287 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 288 | if (IS_DUAL_DSI()) { |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 289 | /* report half resolution to user */ |
| 290 | dsi_dual_connector_fix_modes(connector); |
| 291 | ret = dsi_dual_connector_tile_init(connector, id); |
| 292 | if (ret) |
| 293 | return ret; |
| 294 | ret = drm_mode_connector_set_tile_property(connector); |
| 295 | if (ret) { |
| 296 | pr_err("%s: set tile property failed, %d\n", |
| 297 | __func__, ret); |
| 298 | return ret; |
| 299 | } |
| 300 | } |
| 301 | |
| 302 | return num; |
| 303 | } |
| 304 | |
| 305 | static int dsi_mgr_connector_mode_valid(struct drm_connector *connector, |
| 306 | struct drm_display_mode *mode) |
| 307 | { |
| 308 | int id = dsi_mgr_connector_get_id(connector); |
| 309 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 310 | struct drm_encoder *encoder = msm_dsi_get_encoder(msm_dsi); |
| 311 | struct msm_drm_private *priv = connector->dev->dev_private; |
| 312 | struct msm_kms *kms = priv->kms; |
| 313 | long actual, requested; |
| 314 | |
| 315 | DBG(""); |
| 316 | requested = 1000 * mode->clock; |
| 317 | actual = kms->funcs->round_pixclk(kms, requested, encoder); |
| 318 | |
| 319 | DBG("requested=%ld, actual=%ld", requested, actual); |
| 320 | if (actual != requested) |
| 321 | return MODE_CLOCK_RANGE; |
| 322 | |
| 323 | return MODE_OK; |
| 324 | } |
| 325 | |
| 326 | static struct drm_encoder * |
| 327 | dsi_mgr_connector_best_encoder(struct drm_connector *connector) |
| 328 | { |
| 329 | int id = dsi_mgr_connector_get_id(connector); |
| 330 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 331 | |
| 332 | DBG(""); |
| 333 | return msm_dsi_get_encoder(msm_dsi); |
| 334 | } |
| 335 | |
| 336 | static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge) |
| 337 | { |
| 338 | int id = dsi_mgr_bridge_get_id(bridge); |
| 339 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 340 | struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1); |
| 341 | struct mipi_dsi_host *host = msm_dsi->host; |
| 342 | struct drm_panel *panel = msm_dsi->panel; |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 343 | bool is_dual_dsi = IS_DUAL_DSI(); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 344 | int ret; |
| 345 | |
| 346 | DBG("id=%d", id); |
Archit Taneja | 6f054ec | 2015-08-03 14:08:33 +0530 | [diff] [blame] | 347 | if (!msm_dsi_device_connected(msm_dsi) || |
| 348 | (is_dual_dsi && (DSI_1 == id))) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 349 | return; |
| 350 | |
| 351 | ret = msm_dsi_host_power_on(host); |
| 352 | if (ret) { |
| 353 | pr_err("%s: power on host %d failed, %d\n", __func__, id, ret); |
| 354 | goto host_on_fail; |
| 355 | } |
| 356 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 357 | if (is_dual_dsi && msm_dsi1) { |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 358 | ret = msm_dsi_host_power_on(msm_dsi1->host); |
| 359 | if (ret) { |
| 360 | pr_err("%s: power on host1 failed, %d\n", |
| 361 | __func__, ret); |
| 362 | goto host1_on_fail; |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | /* Always call panel functions once, because even for dual panels, |
| 367 | * there is only one drm_panel instance. |
| 368 | */ |
Archit Taneja | 09992e4d | 2015-08-03 14:09:36 +0530 | [diff] [blame] | 369 | if (panel) { |
| 370 | ret = drm_panel_prepare(panel); |
| 371 | if (ret) { |
| 372 | pr_err("%s: prepare panel %d failed, %d\n", __func__, |
| 373 | id, ret); |
| 374 | goto panel_prep_fail; |
| 375 | } |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 376 | } |
| 377 | |
| 378 | ret = msm_dsi_host_enable(host); |
| 379 | if (ret) { |
| 380 | pr_err("%s: enable host %d failed, %d\n", __func__, id, ret); |
| 381 | goto host_en_fail; |
| 382 | } |
| 383 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 384 | if (is_dual_dsi && msm_dsi1) { |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 385 | ret = msm_dsi_host_enable(msm_dsi1->host); |
| 386 | if (ret) { |
| 387 | pr_err("%s: enable host1 failed, %d\n", __func__, ret); |
| 388 | goto host1_en_fail; |
| 389 | } |
| 390 | } |
| 391 | |
Archit Taneja | 09992e4d | 2015-08-03 14:09:36 +0530 | [diff] [blame] | 392 | if (panel) { |
| 393 | ret = drm_panel_enable(panel); |
| 394 | if (ret) { |
| 395 | pr_err("%s: enable panel %d failed, %d\n", __func__, id, |
| 396 | ret); |
| 397 | goto panel_en_fail; |
| 398 | } |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 399 | } |
| 400 | |
| 401 | return; |
| 402 | |
| 403 | panel_en_fail: |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 404 | if (is_dual_dsi && msm_dsi1) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 405 | msm_dsi_host_disable(msm_dsi1->host); |
| 406 | host1_en_fail: |
| 407 | msm_dsi_host_disable(host); |
| 408 | host_en_fail: |
Archit Taneja | 09992e4d | 2015-08-03 14:09:36 +0530 | [diff] [blame] | 409 | if (panel) |
| 410 | drm_panel_unprepare(panel); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 411 | panel_prep_fail: |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 412 | if (is_dual_dsi && msm_dsi1) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 413 | msm_dsi_host_power_off(msm_dsi1->host); |
| 414 | host1_on_fail: |
| 415 | msm_dsi_host_power_off(host); |
| 416 | host_on_fail: |
| 417 | return; |
| 418 | } |
| 419 | |
| 420 | static void dsi_mgr_bridge_enable(struct drm_bridge *bridge) |
| 421 | { |
| 422 | DBG(""); |
| 423 | } |
| 424 | |
| 425 | static void dsi_mgr_bridge_disable(struct drm_bridge *bridge) |
| 426 | { |
| 427 | DBG(""); |
| 428 | } |
| 429 | |
| 430 | static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge) |
| 431 | { |
| 432 | int id = dsi_mgr_bridge_get_id(bridge); |
| 433 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 434 | struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1); |
| 435 | struct mipi_dsi_host *host = msm_dsi->host; |
| 436 | struct drm_panel *panel = msm_dsi->panel; |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 437 | bool is_dual_dsi = IS_DUAL_DSI(); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 438 | int ret; |
| 439 | |
| 440 | DBG("id=%d", id); |
| 441 | |
Archit Taneja | 6f054ec | 2015-08-03 14:08:33 +0530 | [diff] [blame] | 442 | if (!msm_dsi_device_connected(msm_dsi) || |
| 443 | (is_dual_dsi && (DSI_1 == id))) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 444 | return; |
| 445 | |
Archit Taneja | 09992e4d | 2015-08-03 14:09:36 +0530 | [diff] [blame] | 446 | if (panel) { |
| 447 | ret = drm_panel_disable(panel); |
| 448 | if (ret) |
| 449 | pr_err("%s: Panel %d OFF failed, %d\n", __func__, id, |
| 450 | ret); |
| 451 | } |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 452 | |
| 453 | ret = msm_dsi_host_disable(host); |
| 454 | if (ret) |
| 455 | pr_err("%s: host %d disable failed, %d\n", __func__, id, ret); |
| 456 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 457 | if (is_dual_dsi && msm_dsi1) { |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 458 | ret = msm_dsi_host_disable(msm_dsi1->host); |
| 459 | if (ret) |
| 460 | pr_err("%s: host1 disable failed, %d\n", __func__, ret); |
| 461 | } |
| 462 | |
Archit Taneja | 09992e4d | 2015-08-03 14:09:36 +0530 | [diff] [blame] | 463 | if (panel) { |
| 464 | ret = drm_panel_unprepare(panel); |
| 465 | if (ret) |
| 466 | pr_err("%s: Panel %d unprepare failed,%d\n", __func__, |
| 467 | id, ret); |
| 468 | } |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 469 | |
| 470 | ret = msm_dsi_host_power_off(host); |
| 471 | if (ret) |
| 472 | pr_err("%s: host %d power off failed,%d\n", __func__, id, ret); |
| 473 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 474 | if (is_dual_dsi && msm_dsi1) { |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 475 | ret = msm_dsi_host_power_off(msm_dsi1->host); |
| 476 | if (ret) |
| 477 | pr_err("%s: host1 power off failed, %d\n", |
| 478 | __func__, ret); |
| 479 | } |
| 480 | } |
| 481 | |
| 482 | static void dsi_mgr_bridge_mode_set(struct drm_bridge *bridge, |
| 483 | struct drm_display_mode *mode, |
| 484 | struct drm_display_mode *adjusted_mode) |
| 485 | { |
| 486 | int id = dsi_mgr_bridge_get_id(bridge); |
| 487 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 488 | struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id); |
| 489 | struct mipi_dsi_host *host = msm_dsi->host; |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 490 | bool is_dual_dsi = IS_DUAL_DSI(); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 491 | |
| 492 | DBG("set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x", |
| 493 | mode->base.id, mode->name, |
| 494 | mode->vrefresh, mode->clock, |
| 495 | mode->hdisplay, mode->hsync_start, |
| 496 | mode->hsync_end, mode->htotal, |
| 497 | mode->vdisplay, mode->vsync_start, |
| 498 | mode->vsync_end, mode->vtotal, |
| 499 | mode->type, mode->flags); |
| 500 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 501 | if (is_dual_dsi && (DSI_1 == id)) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 502 | return; |
| 503 | |
| 504 | msm_dsi_host_set_display_mode(host, adjusted_mode); |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 505 | if (is_dual_dsi && other_dsi) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 506 | msm_dsi_host_set_display_mode(other_dsi->host, adjusted_mode); |
| 507 | } |
| 508 | |
| 509 | static const struct drm_connector_funcs dsi_mgr_connector_funcs = { |
| 510 | .dpms = drm_atomic_helper_connector_dpms, |
| 511 | .detect = dsi_mgr_connector_detect, |
| 512 | .fill_modes = drm_helper_probe_single_connector_modes, |
| 513 | .destroy = dsi_mgr_connector_destroy, |
| 514 | .reset = drm_atomic_helper_connector_reset, |
| 515 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
| 516 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
| 517 | }; |
| 518 | |
| 519 | static const struct drm_connector_helper_funcs dsi_mgr_conn_helper_funcs = { |
| 520 | .get_modes = dsi_mgr_connector_get_modes, |
| 521 | .mode_valid = dsi_mgr_connector_mode_valid, |
| 522 | .best_encoder = dsi_mgr_connector_best_encoder, |
| 523 | }; |
| 524 | |
| 525 | static const struct drm_bridge_funcs dsi_mgr_bridge_funcs = { |
| 526 | .pre_enable = dsi_mgr_bridge_pre_enable, |
| 527 | .enable = dsi_mgr_bridge_enable, |
| 528 | .disable = dsi_mgr_bridge_disable, |
| 529 | .post_disable = dsi_mgr_bridge_post_disable, |
| 530 | .mode_set = dsi_mgr_bridge_mode_set, |
| 531 | }; |
| 532 | |
Archit Taneja | c118e29 | 2015-07-31 14:06:10 +0530 | [diff] [blame] | 533 | /* initialize connector when we're connected to a drm_panel */ |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 534 | struct drm_connector *msm_dsi_manager_connector_init(u8 id) |
| 535 | { |
| 536 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 537 | struct drm_connector *connector = NULL; |
| 538 | struct dsi_connector *dsi_connector; |
Hai Li | 6f6b287 | 2015-04-23 14:13:21 -0400 | [diff] [blame] | 539 | int ret, i; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 540 | |
| 541 | dsi_connector = devm_kzalloc(msm_dsi->dev->dev, |
| 542 | sizeof(*dsi_connector), GFP_KERNEL); |
| 543 | if (!dsi_connector) { |
| 544 | ret = -ENOMEM; |
| 545 | goto fail; |
| 546 | } |
| 547 | |
| 548 | dsi_connector->id = id; |
| 549 | |
| 550 | connector = &dsi_connector->base; |
| 551 | |
| 552 | ret = drm_connector_init(msm_dsi->dev, connector, |
| 553 | &dsi_mgr_connector_funcs, DRM_MODE_CONNECTOR_DSI); |
| 554 | if (ret) |
| 555 | goto fail; |
| 556 | |
| 557 | drm_connector_helper_add(connector, &dsi_mgr_conn_helper_funcs); |
| 558 | |
| 559 | /* Enable HPD to let hpd event is handled |
| 560 | * when panel is attached to the host. |
| 561 | */ |
| 562 | connector->polled = DRM_CONNECTOR_POLL_HPD; |
| 563 | |
| 564 | /* Display driver doesn't support interlace now. */ |
| 565 | connector->interlace_allowed = 0; |
| 566 | connector->doublescan_allowed = 0; |
| 567 | |
| 568 | ret = drm_connector_register(connector); |
| 569 | if (ret) |
| 570 | goto fail; |
| 571 | |
Hai Li | 6f6b287 | 2015-04-23 14:13:21 -0400 | [diff] [blame] | 572 | for (i = 0; i < MSM_DSI_ENCODER_NUM; i++) |
| 573 | drm_mode_connector_attach_encoder(connector, |
| 574 | msm_dsi->encoders[i]); |
| 575 | |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 576 | return connector; |
| 577 | |
| 578 | fail: |
| 579 | if (connector) |
| 580 | dsi_mgr_connector_destroy(connector); |
| 581 | |
| 582 | return ERR_PTR(ret); |
| 583 | } |
| 584 | |
| 585 | /* initialize bridge */ |
| 586 | struct drm_bridge *msm_dsi_manager_bridge_init(u8 id) |
| 587 | { |
| 588 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 589 | struct drm_bridge *bridge = NULL; |
| 590 | struct dsi_bridge *dsi_bridge; |
| 591 | int ret; |
| 592 | |
| 593 | dsi_bridge = devm_kzalloc(msm_dsi->dev->dev, |
| 594 | sizeof(*dsi_bridge), GFP_KERNEL); |
| 595 | if (!dsi_bridge) { |
| 596 | ret = -ENOMEM; |
| 597 | goto fail; |
| 598 | } |
| 599 | |
| 600 | dsi_bridge->id = id; |
| 601 | |
| 602 | bridge = &dsi_bridge->base; |
| 603 | bridge->funcs = &dsi_mgr_bridge_funcs; |
| 604 | |
| 605 | ret = drm_bridge_attach(msm_dsi->dev, bridge); |
| 606 | if (ret) |
| 607 | goto fail; |
| 608 | |
| 609 | return bridge; |
| 610 | |
| 611 | fail: |
| 612 | if (bridge) |
| 613 | msm_dsi_manager_bridge_destroy(bridge); |
| 614 | |
| 615 | return ERR_PTR(ret); |
| 616 | } |
| 617 | |
Archit Taneja | c118e29 | 2015-07-31 14:06:10 +0530 | [diff] [blame] | 618 | struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id) |
| 619 | { |
| 620 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 621 | struct drm_device *dev = msm_dsi->dev; |
| 622 | struct drm_encoder *encoder; |
| 623 | struct drm_bridge *int_bridge, *ext_bridge; |
| 624 | struct drm_connector *connector; |
| 625 | struct list_head *connector_list; |
| 626 | |
| 627 | int_bridge = msm_dsi->bridge; |
| 628 | ext_bridge = msm_dsi->external_bridge = |
| 629 | msm_dsi_host_get_bridge(msm_dsi->host); |
| 630 | |
| 631 | /* |
| 632 | * HACK: we may not know the external DSI bridge device's mode |
| 633 | * flags here. We'll get to know them only when the device |
| 634 | * attaches to the dsi host. For now, assume the bridge supports |
| 635 | * DSI video mode |
| 636 | */ |
| 637 | encoder = msm_dsi->encoders[MSM_DSI_VIDEO_ENCODER_ID]; |
| 638 | |
| 639 | /* link the internal dsi bridge to the external bridge */ |
| 640 | int_bridge->next = ext_bridge; |
| 641 | /* set the external bridge's encoder as dsi's encoder */ |
| 642 | ext_bridge->encoder = encoder; |
| 643 | |
| 644 | drm_bridge_attach(dev, ext_bridge); |
| 645 | |
| 646 | /* |
| 647 | * we need the drm_connector created by the external bridge |
| 648 | * driver (or someone else) to feed it to our driver's |
| 649 | * priv->connector[] list, mainly for msm_fbdev_init() |
| 650 | */ |
| 651 | connector_list = &dev->mode_config.connector_list; |
| 652 | |
| 653 | list_for_each_entry(connector, connector_list, head) { |
| 654 | int i; |
| 655 | |
| 656 | for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { |
| 657 | if (connector->encoder_ids[i] == encoder->base.id) |
| 658 | return connector; |
| 659 | } |
| 660 | } |
| 661 | |
| 662 | return ERR_PTR(-ENODEV); |
| 663 | } |
| 664 | |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 665 | void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge) |
| 666 | { |
| 667 | } |
| 668 | |
| 669 | int msm_dsi_manager_phy_enable(int id, |
| 670 | const unsigned long bit_rate, const unsigned long esc_rate, |
| 671 | u32 *clk_pre, u32 *clk_post) |
| 672 | { |
| 673 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 674 | struct msm_dsi_phy *phy = msm_dsi->phy; |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 675 | int src_pll_id = IS_DUAL_DSI() ? DSI_CLOCK_MASTER : id; |
Hai Li | 328e1a6 | 2015-07-03 10:09:46 -0400 | [diff] [blame] | 676 | struct msm_dsi_pll *pll = msm_dsi_phy_get_pll(msm_dsi->phy); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 677 | int ret; |
| 678 | |
Hai Li | 13351cd | 2015-06-10 13:18:17 -0400 | [diff] [blame] | 679 | ret = msm_dsi_phy_enable(phy, src_pll_id, bit_rate, esc_rate); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 680 | if (ret) |
| 681 | return ret; |
| 682 | |
Hai Li | 328e1a6 | 2015-07-03 10:09:46 -0400 | [diff] [blame] | 683 | /* |
| 684 | * Reset DSI PHY silently changes its PLL registers to reset status, |
| 685 | * which will confuse clock driver and result in wrong output rate of |
| 686 | * link clocks. Restore PLL status if its PLL is being used as clock |
| 687 | * source. |
| 688 | */ |
| 689 | if (!IS_DUAL_DSI() || (id == DSI_CLOCK_MASTER)) { |
| 690 | ret = msm_dsi_pll_restore_state(pll); |
| 691 | if (ret) { |
| 692 | pr_err("%s: failed to restore pll state\n", __func__); |
| 693 | msm_dsi_phy_disable(phy); |
| 694 | return ret; |
| 695 | } |
| 696 | } |
| 697 | |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 698 | msm_dsi->phy_enabled = true; |
| 699 | msm_dsi_phy_get_clk_pre_post(phy, clk_pre, clk_post); |
| 700 | |
| 701 | return 0; |
| 702 | } |
| 703 | |
| 704 | void msm_dsi_manager_phy_disable(int id) |
| 705 | { |
| 706 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 707 | struct msm_dsi *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER); |
| 708 | struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE); |
| 709 | struct msm_dsi_phy *phy = msm_dsi->phy; |
Hai Li | 328e1a6 | 2015-07-03 10:09:46 -0400 | [diff] [blame] | 710 | struct msm_dsi_pll *pll = msm_dsi_phy_get_pll(msm_dsi->phy); |
| 711 | |
| 712 | /* Save PLL status if it is a clock source */ |
| 713 | if (!IS_DUAL_DSI() || (id == DSI_CLOCK_MASTER)) |
| 714 | msm_dsi_pll_save_state(pll); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 715 | |
| 716 | /* disable DSI phy |
| 717 | * In dual-dsi configuration, the phy should be disabled for the |
| 718 | * first controller only when the second controller is disabled. |
| 719 | */ |
| 720 | msm_dsi->phy_enabled = false; |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 721 | if (IS_DUAL_DSI() && mdsi && sdsi) { |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 722 | if (!mdsi->phy_enabled && !sdsi->phy_enabled) { |
| 723 | msm_dsi_phy_disable(sdsi->phy); |
| 724 | msm_dsi_phy_disable(mdsi->phy); |
| 725 | } |
| 726 | } else { |
| 727 | msm_dsi_phy_disable(phy); |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg) |
| 732 | { |
| 733 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 734 | struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0); |
| 735 | struct mipi_dsi_host *host = msm_dsi->host; |
| 736 | bool is_read = (msg->rx_buf && msg->rx_len); |
| 737 | bool need_sync = (IS_SYNC_NEEDED() && !is_read); |
| 738 | int ret; |
| 739 | |
| 740 | if (!msg->tx_buf || !msg->tx_len) |
| 741 | return 0; |
| 742 | |
| 743 | /* In dual master case, panel requires the same commands sent to |
| 744 | * both DSI links. Host issues the command trigger to both links |
| 745 | * when DSI_1 calls the cmd transfer function, no matter it happens |
| 746 | * before or after DSI_0 cmd transfer. |
| 747 | */ |
| 748 | if (need_sync && (id == DSI_0)) |
| 749 | return is_read ? msg->rx_len : msg->tx_len; |
| 750 | |
| 751 | if (need_sync && msm_dsi0) { |
| 752 | ret = msm_dsi_host_xfer_prepare(msm_dsi0->host, msg); |
| 753 | if (ret) { |
| 754 | pr_err("%s: failed to prepare non-trigger host, %d\n", |
| 755 | __func__, ret); |
| 756 | return ret; |
| 757 | } |
| 758 | } |
| 759 | ret = msm_dsi_host_xfer_prepare(host, msg); |
| 760 | if (ret) { |
| 761 | pr_err("%s: failed to prepare host, %d\n", __func__, ret); |
| 762 | goto restore_host0; |
| 763 | } |
| 764 | |
| 765 | ret = is_read ? msm_dsi_host_cmd_rx(host, msg) : |
| 766 | msm_dsi_host_cmd_tx(host, msg); |
| 767 | |
| 768 | msm_dsi_host_xfer_restore(host, msg); |
| 769 | |
| 770 | restore_host0: |
| 771 | if (need_sync && msm_dsi0) |
| 772 | msm_dsi_host_xfer_restore(msm_dsi0->host, msg); |
| 773 | |
| 774 | return ret; |
| 775 | } |
| 776 | |
| 777 | bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 iova, u32 len) |
| 778 | { |
| 779 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 780 | struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0); |
| 781 | struct mipi_dsi_host *host = msm_dsi->host; |
| 782 | |
| 783 | if (IS_SYNC_NEEDED() && (id == DSI_0)) |
| 784 | return false; |
| 785 | |
| 786 | if (IS_SYNC_NEEDED() && msm_dsi0) |
| 787 | msm_dsi_host_cmd_xfer_commit(msm_dsi0->host, iova, len); |
| 788 | |
| 789 | msm_dsi_host_cmd_xfer_commit(host, iova, len); |
| 790 | |
| 791 | return true; |
| 792 | } |
| 793 | |
| 794 | int msm_dsi_manager_register(struct msm_dsi *msm_dsi) |
| 795 | { |
| 796 | struct msm_dsi_manager *msm_dsim = &msm_dsim_glb; |
| 797 | int id = msm_dsi->id; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 798 | int ret; |
| 799 | |
| 800 | if (id > DSI_MAX) { |
| 801 | pr_err("%s: invalid id %d\n", __func__, id); |
| 802 | return -EINVAL; |
| 803 | } |
| 804 | |
| 805 | if (msm_dsim->dsi[id]) { |
| 806 | pr_err("%s: dsi%d already registered\n", __func__, id); |
| 807 | return -EBUSY; |
| 808 | } |
| 809 | |
| 810 | msm_dsim->dsi[id] = msm_dsi; |
| 811 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 812 | ret = dsi_mgr_parse_dual_dsi(msm_dsi->pdev->dev.of_node, id); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 813 | if (ret) { |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 814 | pr_err("%s: failed to parse dual DSI info\n", __func__); |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 815 | goto fail; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 816 | } |
| 817 | |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 818 | ret = dsi_mgr_host_register(id); |
| 819 | if (ret) { |
| 820 | pr_err("%s: failed to register mipi dsi host for DSI %d\n", |
| 821 | __func__, id); |
| 822 | goto fail; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 823 | } |
| 824 | |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 825 | return 0; |
| 826 | |
| 827 | fail: |
| 828 | msm_dsim->dsi[id] = NULL; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 829 | return ret; |
| 830 | } |
| 831 | |
| 832 | void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi) |
| 833 | { |
| 834 | struct msm_dsi_manager *msm_dsim = &msm_dsim_glb; |
| 835 | |
| 836 | if (msm_dsi->host) |
| 837 | msm_dsi_host_unregister(msm_dsi->host); |
| 838 | msm_dsim->dsi[msm_dsi->id] = NULL; |
| 839 | } |
| 840 | |