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 | 57bf433 | 2016-09-15 14:44:22 +0530 | [diff] [blame] | 75 | static int dsi_mgr_setup_components(int id) |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 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); |
Hai Li | 57bf433 | 2016-09-15 14:44:22 +0530 | [diff] [blame] | 80 | struct msm_dsi *clk_slave_dsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE); |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 81 | struct msm_dsi_pll *src_pll; |
| 82 | int ret; |
| 83 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 84 | if (!IS_DUAL_DSI()) { |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 85 | ret = msm_dsi_host_register(msm_dsi->host, true); |
| 86 | if (ret) |
| 87 | return ret; |
| 88 | |
Hai Li | 57bf433 | 2016-09-15 14:44:22 +0530 | [diff] [blame] | 89 | msm_dsi_phy_set_usecase(msm_dsi->phy, MSM_DSI_PHY_STANDALONE); |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 90 | src_pll = msm_dsi_phy_get_pll(msm_dsi->phy); |
Lloyd Atkinson | f0efc83 | 2018-01-16 16:26:01 -0500 | [diff] [blame] | 91 | if (IS_ERR(src_pll)) |
| 92 | return PTR_ERR(src_pll); |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 93 | ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll); |
| 94 | } else if (!other_dsi) { |
| 95 | ret = 0; |
| 96 | } else { |
Hai Li | 57bf433 | 2016-09-15 14:44:22 +0530 | [diff] [blame] | 97 | struct msm_dsi *master_link_dsi = IS_MASTER_DSI_LINK(id) ? |
| 98 | msm_dsi : other_dsi; |
| 99 | struct msm_dsi *slave_link_dsi = IS_MASTER_DSI_LINK(id) ? |
| 100 | other_dsi : msm_dsi; |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 101 | /* Register slave host first, so that slave DSI device |
| 102 | * has a chance to probe, and do not block the master |
| 103 | * DSI device's probe. |
| 104 | * Also, do not check defer for the slave host, |
| 105 | * because only master DSI device adds the panel to global |
| 106 | * panel list. The panel's device is the master DSI device. |
| 107 | */ |
Hai Li | 57bf433 | 2016-09-15 14:44:22 +0530 | [diff] [blame] | 108 | ret = msm_dsi_host_register(slave_link_dsi->host, false); |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 109 | if (ret) |
| 110 | return ret; |
Hai Li | 57bf433 | 2016-09-15 14:44:22 +0530 | [diff] [blame] | 111 | ret = msm_dsi_host_register(master_link_dsi->host, true); |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 112 | if (ret) |
| 113 | return ret; |
| 114 | |
| 115 | /* PLL0 is to drive both 2 DSI link clocks in Dual DSI mode. */ |
Hai Li | 57bf433 | 2016-09-15 14:44:22 +0530 | [diff] [blame] | 116 | msm_dsi_phy_set_usecase(clk_master_dsi->phy, |
| 117 | MSM_DSI_PHY_MASTER); |
| 118 | msm_dsi_phy_set_usecase(clk_slave_dsi->phy, |
| 119 | MSM_DSI_PHY_SLAVE); |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 120 | src_pll = msm_dsi_phy_get_pll(clk_master_dsi->phy); |
Lloyd Atkinson | f0efc83 | 2018-01-16 16:26:01 -0500 | [diff] [blame] | 121 | if (IS_ERR(src_pll)) |
| 122 | return PTR_ERR(src_pll); |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 123 | ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll); |
| 124 | if (ret) |
| 125 | return ret; |
| 126 | ret = msm_dsi_host_set_src_pll(other_dsi->host, src_pll); |
| 127 | } |
| 128 | |
| 129 | return ret; |
| 130 | } |
| 131 | |
Hai Li | b62aa70 | 2017-01-07 14:24:38 +0530 | [diff] [blame] | 132 | static int enable_phy(struct msm_dsi *msm_dsi, int src_pll_id, |
| 133 | struct msm_dsi_phy_shared_timings *shared_timings) |
| 134 | { |
| 135 | struct msm_dsi_phy_clk_request clk_req; |
| 136 | int ret; |
| 137 | |
| 138 | msm_dsi_host_get_phy_clk_req(msm_dsi->host, &clk_req); |
| 139 | |
| 140 | ret = msm_dsi_phy_enable(msm_dsi->phy, src_pll_id, &clk_req); |
| 141 | msm_dsi_phy_get_shared_timings(msm_dsi->phy, shared_timings); |
| 142 | |
| 143 | return ret; |
| 144 | } |
| 145 | |
| 146 | static int |
| 147 | dsi_mgr_phy_enable(int id, |
| 148 | struct msm_dsi_phy_shared_timings shared_timings[DSI_MAX]) |
| 149 | { |
| 150 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 151 | struct msm_dsi *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER); |
| 152 | struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE); |
| 153 | int src_pll_id = IS_DUAL_DSI() ? DSI_CLOCK_MASTER : id; |
| 154 | int ret; |
| 155 | |
| 156 | /* In case of dual DSI, some registers in PHY1 have been programmed |
| 157 | * during PLL0 clock's set_rate. The PHY1 reset called by host1 here |
| 158 | * will silently reset those PHY1 registers. Therefore we need to reset |
| 159 | * and enable both PHYs before any PLL clock operation. |
| 160 | */ |
| 161 | if (IS_DUAL_DSI() && mdsi && sdsi) { |
| 162 | if (!mdsi->phy_enabled && !sdsi->phy_enabled) { |
| 163 | msm_dsi_host_reset_phy(mdsi->host); |
| 164 | msm_dsi_host_reset_phy(sdsi->host); |
| 165 | |
| 166 | ret = enable_phy(mdsi, src_pll_id, |
| 167 | &shared_timings[DSI_CLOCK_MASTER]); |
| 168 | if (ret) |
| 169 | return ret; |
| 170 | ret = enable_phy(sdsi, src_pll_id, |
| 171 | &shared_timings[DSI_CLOCK_SLAVE]); |
| 172 | if (ret) { |
| 173 | msm_dsi_phy_disable(mdsi->phy); |
| 174 | return ret; |
| 175 | } |
| 176 | } |
| 177 | } else { |
Archit Taneja | a5fef53 | 2017-02-16 16:29:04 +0530 | [diff] [blame] | 178 | msm_dsi_host_reset_phy(msm_dsi->host); |
Hai Li | b62aa70 | 2017-01-07 14:24:38 +0530 | [diff] [blame] | 179 | ret = enable_phy(msm_dsi, src_pll_id, &shared_timings[id]); |
| 180 | if (ret) |
| 181 | return ret; |
| 182 | } |
| 183 | |
| 184 | msm_dsi->phy_enabled = true; |
| 185 | |
| 186 | return 0; |
| 187 | } |
| 188 | |
| 189 | static void dsi_mgr_phy_disable(int id) |
| 190 | { |
| 191 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 192 | struct msm_dsi *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER); |
| 193 | struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE); |
| 194 | |
| 195 | /* disable DSI phy |
| 196 | * In dual-dsi configuration, the phy should be disabled for the |
| 197 | * first controller only when the second controller is disabled. |
| 198 | */ |
| 199 | msm_dsi->phy_enabled = false; |
| 200 | if (IS_DUAL_DSI() && mdsi && sdsi) { |
| 201 | if (!mdsi->phy_enabled && !sdsi->phy_enabled) { |
| 202 | msm_dsi_phy_disable(sdsi->phy); |
| 203 | msm_dsi_phy_disable(mdsi->phy); |
| 204 | } |
| 205 | } else { |
| 206 | msm_dsi_phy_disable(msm_dsi->phy); |
| 207 | } |
| 208 | } |
| 209 | |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 210 | struct dsi_connector { |
| 211 | struct drm_connector base; |
| 212 | int id; |
| 213 | }; |
| 214 | |
| 215 | struct dsi_bridge { |
| 216 | struct drm_bridge base; |
| 217 | int id; |
| 218 | }; |
| 219 | |
| 220 | #define to_dsi_connector(x) container_of(x, struct dsi_connector, base) |
| 221 | #define to_dsi_bridge(x) container_of(x, struct dsi_bridge, base) |
| 222 | |
| 223 | static inline int dsi_mgr_connector_get_id(struct drm_connector *connector) |
| 224 | { |
| 225 | struct dsi_connector *dsi_connector = to_dsi_connector(connector); |
| 226 | return dsi_connector->id; |
| 227 | } |
| 228 | |
| 229 | static int dsi_mgr_bridge_get_id(struct drm_bridge *bridge) |
| 230 | { |
| 231 | struct dsi_bridge *dsi_bridge = to_dsi_bridge(bridge); |
| 232 | return dsi_bridge->id; |
| 233 | } |
| 234 | |
| 235 | static enum drm_connector_status dsi_mgr_connector_detect( |
| 236 | struct drm_connector *connector, bool force) |
| 237 | { |
| 238 | int id = dsi_mgr_connector_get_id(connector); |
| 239 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 240 | struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id); |
| 241 | struct msm_drm_private *priv = connector->dev->dev_private; |
| 242 | struct msm_kms *kms = priv->kms; |
| 243 | |
| 244 | DBG("id=%d", id); |
| 245 | if (!msm_dsi->panel) { |
| 246 | msm_dsi->panel = msm_dsi_host_get_panel(msm_dsi->host, |
Archit Taneja | a9ddac9 | 2015-08-03 14:05:45 +0530 | [diff] [blame] | 247 | &msm_dsi->device_flags); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 248 | |
| 249 | /* There is only 1 panel in the global panel list |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 250 | * for dual DSI mode. Therefore slave dsi should get |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 251 | * the drm_panel instance from master dsi, and |
| 252 | * keep using the panel flags got from the current DSI link. |
| 253 | */ |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 254 | if (!msm_dsi->panel && IS_DUAL_DSI() && |
| 255 | !IS_MASTER_DSI_LINK(id) && other_dsi) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 256 | msm_dsi->panel = msm_dsi_host_get_panel( |
| 257 | other_dsi->host, NULL); |
| 258 | |
Archit Taneja | 9c9f6f8 | 2016-12-05 15:24:53 +0530 | [diff] [blame] | 259 | |
| 260 | if (msm_dsi->panel && kms->funcs->set_encoder_mode) { |
| 261 | bool cmd_mode = !(msm_dsi->device_flags & |
| 262 | MIPI_DSI_MODE_VIDEO); |
| 263 | struct drm_encoder *encoder = |
| 264 | msm_dsi_get_encoder(msm_dsi); |
| 265 | |
| 266 | kms->funcs->set_encoder_mode(kms, encoder, cmd_mode); |
| 267 | } |
| 268 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 269 | if (msm_dsi->panel && IS_DUAL_DSI()) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 270 | drm_object_attach_property(&connector->base, |
| 271 | connector->dev->mode_config.tile_property, 0); |
| 272 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 273 | /* Set split display info to kms once dual DSI panel is |
| 274 | * connected to both hosts. |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 275 | */ |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 276 | if (msm_dsi->panel && IS_DUAL_DSI() && |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 277 | other_dsi && other_dsi->panel) { |
Archit Taneja | a9ddac9 | 2015-08-03 14:05:45 +0530 | [diff] [blame] | 278 | bool cmd_mode = !(msm_dsi->device_flags & |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 279 | MIPI_DSI_MODE_VIDEO); |
| 280 | struct drm_encoder *encoder = msm_dsi_get_encoder( |
| 281 | dsi_mgr_get_dsi(DSI_ENCODER_MASTER)); |
| 282 | struct drm_encoder *slave_enc = msm_dsi_get_encoder( |
| 283 | dsi_mgr_get_dsi(DSI_ENCODER_SLAVE)); |
| 284 | |
| 285 | if (kms->funcs->set_split_display) |
| 286 | kms->funcs->set_split_display(kms, encoder, |
| 287 | slave_enc, cmd_mode); |
| 288 | else |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 289 | pr_err("mdp does not support dual DSI\n"); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 290 | } |
| 291 | } |
| 292 | |
| 293 | return msm_dsi->panel ? connector_status_connected : |
| 294 | connector_status_disconnected; |
| 295 | } |
| 296 | |
| 297 | static void dsi_mgr_connector_destroy(struct drm_connector *connector) |
| 298 | { |
Archit Taneja | 8208ed9 | 2016-05-02 11:05:53 +0530 | [diff] [blame] | 299 | struct dsi_connector *dsi_connector = to_dsi_connector(connector); |
| 300 | |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 301 | DBG(""); |
Archit Taneja | 8208ed9 | 2016-05-02 11:05:53 +0530 | [diff] [blame] | 302 | |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 303 | drm_connector_cleanup(connector); |
Archit Taneja | 8208ed9 | 2016-05-02 11:05:53 +0530 | [diff] [blame] | 304 | |
| 305 | kfree(dsi_connector); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 306 | } |
| 307 | |
| 308 | static void dsi_dual_connector_fix_modes(struct drm_connector *connector) |
| 309 | { |
| 310 | struct drm_display_mode *mode, *m; |
| 311 | |
| 312 | /* Only support left-right mode */ |
| 313 | list_for_each_entry_safe(mode, m, &connector->probed_modes, head) { |
| 314 | mode->clock >>= 1; |
| 315 | mode->hdisplay >>= 1; |
| 316 | mode->hsync_start >>= 1; |
| 317 | mode->hsync_end >>= 1; |
| 318 | mode->htotal >>= 1; |
| 319 | drm_mode_set_name(mode); |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | static int dsi_dual_connector_tile_init( |
| 324 | struct drm_connector *connector, int id) |
| 325 | { |
| 326 | struct drm_display_mode *mode; |
| 327 | /* Fake topology id */ |
| 328 | char topo_id[8] = {'M', 'S', 'M', 'D', 'U', 'D', 'S', 'I'}; |
| 329 | |
| 330 | if (connector->tile_group) { |
| 331 | DBG("Tile property has been initialized"); |
| 332 | return 0; |
| 333 | } |
| 334 | |
| 335 | /* Use the first mode only for now */ |
| 336 | mode = list_first_entry(&connector->probed_modes, |
| 337 | struct drm_display_mode, |
| 338 | head); |
| 339 | if (!mode) |
| 340 | return -EINVAL; |
| 341 | |
| 342 | connector->tile_group = drm_mode_get_tile_group( |
| 343 | connector->dev, topo_id); |
| 344 | if (!connector->tile_group) |
| 345 | connector->tile_group = drm_mode_create_tile_group( |
| 346 | connector->dev, topo_id); |
| 347 | if (!connector->tile_group) { |
| 348 | pr_err("%s: failed to create tile group\n", __func__); |
| 349 | return -ENOMEM; |
| 350 | } |
| 351 | |
| 352 | connector->has_tile = true; |
| 353 | connector->tile_is_single_monitor = true; |
| 354 | |
| 355 | /* mode has been fixed */ |
| 356 | connector->tile_h_size = mode->hdisplay; |
| 357 | connector->tile_v_size = mode->vdisplay; |
| 358 | |
| 359 | /* Only support left-right mode */ |
| 360 | connector->num_h_tile = 2; |
| 361 | connector->num_v_tile = 1; |
| 362 | |
| 363 | connector->tile_v_loc = 0; |
| 364 | connector->tile_h_loc = (id == DSI_RIGHT) ? 1 : 0; |
| 365 | |
| 366 | return 0; |
| 367 | } |
| 368 | |
| 369 | static int dsi_mgr_connector_get_modes(struct drm_connector *connector) |
| 370 | { |
| 371 | int id = dsi_mgr_connector_get_id(connector); |
| 372 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 373 | struct drm_panel *panel = msm_dsi->panel; |
| 374 | int ret, num; |
| 375 | |
| 376 | if (!panel) |
| 377 | return 0; |
| 378 | |
| 379 | /* Since we have 2 connectors, but only 1 drm_panel in dual DSI mode, |
| 380 | * panel should not attach to any connector. |
| 381 | * Only temporarily attach panel to the current connector here, |
| 382 | * to let panel set mode to this connector. |
| 383 | */ |
| 384 | drm_panel_attach(panel, connector); |
| 385 | num = drm_panel_get_modes(panel); |
| 386 | drm_panel_detach(panel); |
| 387 | if (!num) |
| 388 | return 0; |
| 389 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 390 | if (IS_DUAL_DSI()) { |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 391 | /* report half resolution to user */ |
| 392 | dsi_dual_connector_fix_modes(connector); |
| 393 | ret = dsi_dual_connector_tile_init(connector, id); |
| 394 | if (ret) |
| 395 | return ret; |
| 396 | ret = drm_mode_connector_set_tile_property(connector); |
| 397 | if (ret) { |
| 398 | pr_err("%s: set tile property failed, %d\n", |
| 399 | __func__, ret); |
| 400 | return ret; |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | return num; |
| 405 | } |
| 406 | |
| 407 | static int dsi_mgr_connector_mode_valid(struct drm_connector *connector, |
| 408 | struct drm_display_mode *mode) |
| 409 | { |
| 410 | int id = dsi_mgr_connector_get_id(connector); |
| 411 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 412 | struct drm_encoder *encoder = msm_dsi_get_encoder(msm_dsi); |
| 413 | struct msm_drm_private *priv = connector->dev->dev_private; |
| 414 | struct msm_kms *kms = priv->kms; |
| 415 | long actual, requested; |
| 416 | |
| 417 | DBG(""); |
| 418 | requested = 1000 * mode->clock; |
| 419 | actual = kms->funcs->round_pixclk(kms, requested, encoder); |
| 420 | |
| 421 | DBG("requested=%ld, actual=%ld", requested, actual); |
| 422 | if (actual != requested) |
| 423 | return MODE_CLOCK_RANGE; |
| 424 | |
| 425 | return MODE_OK; |
| 426 | } |
| 427 | |
| 428 | static struct drm_encoder * |
| 429 | dsi_mgr_connector_best_encoder(struct drm_connector *connector) |
| 430 | { |
| 431 | int id = dsi_mgr_connector_get_id(connector); |
| 432 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 433 | |
| 434 | DBG(""); |
| 435 | return msm_dsi_get_encoder(msm_dsi); |
| 436 | } |
| 437 | |
| 438 | static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge) |
| 439 | { |
| 440 | int id = dsi_mgr_bridge_get_id(bridge); |
| 441 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 442 | struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1); |
| 443 | struct mipi_dsi_host *host = msm_dsi->host; |
| 444 | struct drm_panel *panel = msm_dsi->panel; |
Hai Li | b62aa70 | 2017-01-07 14:24:38 +0530 | [diff] [blame] | 445 | struct msm_dsi_phy_shared_timings phy_shared_timings[DSI_MAX]; |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 446 | bool is_dual_dsi = IS_DUAL_DSI(); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 447 | int ret; |
| 448 | |
| 449 | DBG("id=%d", id); |
Hai Li | b62aa70 | 2017-01-07 14:24:38 +0530 | [diff] [blame] | 450 | if (!msm_dsi_device_connected(msm_dsi)) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 451 | return; |
| 452 | |
Hai Li | b62aa70 | 2017-01-07 14:24:38 +0530 | [diff] [blame] | 453 | ret = dsi_mgr_phy_enable(id, phy_shared_timings); |
| 454 | if (ret) |
| 455 | goto phy_en_fail; |
| 456 | |
| 457 | /* Do nothing with the host if it is DSI 1 in case of dual DSI */ |
| 458 | if (is_dual_dsi && (DSI_1 == id)) |
| 459 | return; |
| 460 | |
| 461 | ret = msm_dsi_host_power_on(host, &phy_shared_timings[id]); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 462 | if (ret) { |
| 463 | pr_err("%s: power on host %d failed, %d\n", __func__, id, ret); |
| 464 | goto host_on_fail; |
| 465 | } |
| 466 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 467 | if (is_dual_dsi && msm_dsi1) { |
Hai Li | b62aa70 | 2017-01-07 14:24:38 +0530 | [diff] [blame] | 468 | ret = msm_dsi_host_power_on(msm_dsi1->host, |
| 469 | &phy_shared_timings[DSI_1]); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 470 | if (ret) { |
| 471 | pr_err("%s: power on host1 failed, %d\n", |
| 472 | __func__, ret); |
| 473 | goto host1_on_fail; |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | /* Always call panel functions once, because even for dual panels, |
| 478 | * there is only one drm_panel instance. |
| 479 | */ |
Archit Taneja | 09992e4d | 2015-08-03 14:09:36 +0530 | [diff] [blame] | 480 | if (panel) { |
| 481 | ret = drm_panel_prepare(panel); |
| 482 | if (ret) { |
| 483 | pr_err("%s: prepare panel %d failed, %d\n", __func__, |
| 484 | id, ret); |
| 485 | goto panel_prep_fail; |
| 486 | } |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 487 | } |
| 488 | |
| 489 | ret = msm_dsi_host_enable(host); |
| 490 | if (ret) { |
| 491 | pr_err("%s: enable host %d failed, %d\n", __func__, id, ret); |
| 492 | goto host_en_fail; |
| 493 | } |
| 494 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 495 | if (is_dual_dsi && msm_dsi1) { |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 496 | ret = msm_dsi_host_enable(msm_dsi1->host); |
| 497 | if (ret) { |
| 498 | pr_err("%s: enable host1 failed, %d\n", __func__, ret); |
| 499 | goto host1_en_fail; |
| 500 | } |
| 501 | } |
| 502 | |
Archit Taneja | 09992e4d | 2015-08-03 14:09:36 +0530 | [diff] [blame] | 503 | if (panel) { |
| 504 | ret = drm_panel_enable(panel); |
| 505 | if (ret) { |
| 506 | pr_err("%s: enable panel %d failed, %d\n", __func__, id, |
| 507 | ret); |
| 508 | goto panel_en_fail; |
| 509 | } |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 510 | } |
| 511 | |
| 512 | return; |
| 513 | |
| 514 | panel_en_fail: |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 515 | if (is_dual_dsi && msm_dsi1) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 516 | msm_dsi_host_disable(msm_dsi1->host); |
| 517 | host1_en_fail: |
| 518 | msm_dsi_host_disable(host); |
| 519 | host_en_fail: |
Archit Taneja | 09992e4d | 2015-08-03 14:09:36 +0530 | [diff] [blame] | 520 | if (panel) |
| 521 | drm_panel_unprepare(panel); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 522 | panel_prep_fail: |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 523 | if (is_dual_dsi && msm_dsi1) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 524 | msm_dsi_host_power_off(msm_dsi1->host); |
| 525 | host1_on_fail: |
| 526 | msm_dsi_host_power_off(host); |
| 527 | host_on_fail: |
Hai Li | b62aa70 | 2017-01-07 14:24:38 +0530 | [diff] [blame] | 528 | dsi_mgr_phy_disable(id); |
| 529 | phy_en_fail: |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 530 | return; |
| 531 | } |
| 532 | |
| 533 | static void dsi_mgr_bridge_enable(struct drm_bridge *bridge) |
| 534 | { |
| 535 | DBG(""); |
| 536 | } |
| 537 | |
| 538 | static void dsi_mgr_bridge_disable(struct drm_bridge *bridge) |
| 539 | { |
| 540 | DBG(""); |
| 541 | } |
| 542 | |
| 543 | static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge) |
| 544 | { |
| 545 | int id = dsi_mgr_bridge_get_id(bridge); |
| 546 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 547 | struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1); |
| 548 | struct mipi_dsi_host *host = msm_dsi->host; |
| 549 | struct drm_panel *panel = msm_dsi->panel; |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 550 | bool is_dual_dsi = IS_DUAL_DSI(); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 551 | int ret; |
| 552 | |
| 553 | DBG("id=%d", id); |
| 554 | |
Hai Li | b62aa70 | 2017-01-07 14:24:38 +0530 | [diff] [blame] | 555 | if (!msm_dsi_device_connected(msm_dsi)) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 556 | return; |
| 557 | |
Hai Li | b62aa70 | 2017-01-07 14:24:38 +0530 | [diff] [blame] | 558 | /* |
| 559 | * Do nothing with the host if it is DSI 1 in case of dual DSI. |
| 560 | * It is safe to call dsi_mgr_phy_disable() here because a single PHY |
| 561 | * won't be diabled until both PHYs request disable. |
| 562 | */ |
| 563 | if (is_dual_dsi && (DSI_1 == id)) |
| 564 | goto disable_phy; |
| 565 | |
Archit Taneja | 09992e4d | 2015-08-03 14:09:36 +0530 | [diff] [blame] | 566 | if (panel) { |
| 567 | ret = drm_panel_disable(panel); |
| 568 | if (ret) |
| 569 | pr_err("%s: Panel %d OFF failed, %d\n", __func__, id, |
| 570 | ret); |
| 571 | } |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 572 | |
| 573 | ret = msm_dsi_host_disable(host); |
| 574 | if (ret) |
| 575 | pr_err("%s: host %d disable failed, %d\n", __func__, id, ret); |
| 576 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 577 | if (is_dual_dsi && msm_dsi1) { |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 578 | ret = msm_dsi_host_disable(msm_dsi1->host); |
| 579 | if (ret) |
| 580 | pr_err("%s: host1 disable failed, %d\n", __func__, ret); |
| 581 | } |
| 582 | |
Archit Taneja | 09992e4d | 2015-08-03 14:09:36 +0530 | [diff] [blame] | 583 | if (panel) { |
| 584 | ret = drm_panel_unprepare(panel); |
| 585 | if (ret) |
| 586 | pr_err("%s: Panel %d unprepare failed,%d\n", __func__, |
| 587 | id, ret); |
| 588 | } |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 589 | |
| 590 | ret = msm_dsi_host_power_off(host); |
| 591 | if (ret) |
| 592 | pr_err("%s: host %d power off failed,%d\n", __func__, id, ret); |
| 593 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 594 | if (is_dual_dsi && msm_dsi1) { |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 595 | ret = msm_dsi_host_power_off(msm_dsi1->host); |
| 596 | if (ret) |
| 597 | pr_err("%s: host1 power off failed, %d\n", |
| 598 | __func__, ret); |
| 599 | } |
Hai Li | b62aa70 | 2017-01-07 14:24:38 +0530 | [diff] [blame] | 600 | |
| 601 | disable_phy: |
| 602 | dsi_mgr_phy_disable(id); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 603 | } |
| 604 | |
| 605 | static void dsi_mgr_bridge_mode_set(struct drm_bridge *bridge, |
| 606 | struct drm_display_mode *mode, |
| 607 | struct drm_display_mode *adjusted_mode) |
| 608 | { |
| 609 | int id = dsi_mgr_bridge_get_id(bridge); |
| 610 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 611 | struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id); |
| 612 | struct mipi_dsi_host *host = msm_dsi->host; |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 613 | bool is_dual_dsi = IS_DUAL_DSI(); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 614 | |
| 615 | DBG("set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x", |
| 616 | mode->base.id, mode->name, |
| 617 | mode->vrefresh, mode->clock, |
| 618 | mode->hdisplay, mode->hsync_start, |
| 619 | mode->hsync_end, mode->htotal, |
| 620 | mode->vdisplay, mode->vsync_start, |
| 621 | mode->vsync_end, mode->vtotal, |
| 622 | mode->type, mode->flags); |
| 623 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 624 | if (is_dual_dsi && (DSI_1 == id)) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 625 | return; |
| 626 | |
| 627 | msm_dsi_host_set_display_mode(host, adjusted_mode); |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 628 | if (is_dual_dsi && other_dsi) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 629 | msm_dsi_host_set_display_mode(other_dsi->host, adjusted_mode); |
| 630 | } |
| 631 | |
| 632 | static const struct drm_connector_funcs dsi_mgr_connector_funcs = { |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 633 | .detect = dsi_mgr_connector_detect, |
| 634 | .fill_modes = drm_helper_probe_single_connector_modes, |
| 635 | .destroy = dsi_mgr_connector_destroy, |
| 636 | .reset = drm_atomic_helper_connector_reset, |
| 637 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
| 638 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
| 639 | }; |
| 640 | |
| 641 | static const struct drm_connector_helper_funcs dsi_mgr_conn_helper_funcs = { |
| 642 | .get_modes = dsi_mgr_connector_get_modes, |
| 643 | .mode_valid = dsi_mgr_connector_mode_valid, |
| 644 | .best_encoder = dsi_mgr_connector_best_encoder, |
| 645 | }; |
| 646 | |
| 647 | static const struct drm_bridge_funcs dsi_mgr_bridge_funcs = { |
| 648 | .pre_enable = dsi_mgr_bridge_pre_enable, |
| 649 | .enable = dsi_mgr_bridge_enable, |
| 650 | .disable = dsi_mgr_bridge_disable, |
| 651 | .post_disable = dsi_mgr_bridge_post_disable, |
| 652 | .mode_set = dsi_mgr_bridge_mode_set, |
| 653 | }; |
| 654 | |
Archit Taneja | c118e29 | 2015-07-31 14:06:10 +0530 | [diff] [blame] | 655 | /* initialize connector when we're connected to a drm_panel */ |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 656 | struct drm_connector *msm_dsi_manager_connector_init(u8 id) |
| 657 | { |
| 658 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 659 | struct drm_connector *connector = NULL; |
| 660 | struct dsi_connector *dsi_connector; |
Archit Taneja | 97e00119 | 2017-01-16 09:42:03 +0530 | [diff] [blame] | 661 | int ret; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 662 | |
Archit Taneja | 8208ed9 | 2016-05-02 11:05:53 +0530 | [diff] [blame] | 663 | dsi_connector = kzalloc(sizeof(*dsi_connector), GFP_KERNEL); |
| 664 | if (!dsi_connector) |
| 665 | return ERR_PTR(-ENOMEM); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 666 | |
| 667 | dsi_connector->id = id; |
| 668 | |
| 669 | connector = &dsi_connector->base; |
| 670 | |
| 671 | ret = drm_connector_init(msm_dsi->dev, connector, |
| 672 | &dsi_mgr_connector_funcs, DRM_MODE_CONNECTOR_DSI); |
| 673 | if (ret) |
Archit Taneja | 8208ed9 | 2016-05-02 11:05:53 +0530 | [diff] [blame] | 674 | return ERR_PTR(ret); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 675 | |
| 676 | drm_connector_helper_add(connector, &dsi_mgr_conn_helper_funcs); |
| 677 | |
| 678 | /* Enable HPD to let hpd event is handled |
| 679 | * when panel is attached to the host. |
| 680 | */ |
| 681 | connector->polled = DRM_CONNECTOR_POLL_HPD; |
| 682 | |
| 683 | /* Display driver doesn't support interlace now. */ |
| 684 | connector->interlace_allowed = 0; |
| 685 | connector->doublescan_allowed = 0; |
| 686 | |
Daniel Vetter | cde4c44 | 2018-07-09 10:40:07 +0200 | [diff] [blame^] | 687 | drm_connector_attach_encoder(connector, msm_dsi->encoder); |
Hai Li | 6f6b287 | 2015-04-23 14:13:21 -0400 | [diff] [blame] | 688 | |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 689 | return connector; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 690 | } |
| 691 | |
| 692 | /* initialize bridge */ |
| 693 | struct drm_bridge *msm_dsi_manager_bridge_init(u8 id) |
| 694 | { |
| 695 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 696 | struct drm_bridge *bridge = NULL; |
| 697 | struct dsi_bridge *dsi_bridge; |
Laurent Pinchart | 3bb80f2 | 2016-11-28 17:59:08 +0200 | [diff] [blame] | 698 | struct drm_encoder *encoder; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 699 | int ret; |
| 700 | |
| 701 | dsi_bridge = devm_kzalloc(msm_dsi->dev->dev, |
| 702 | sizeof(*dsi_bridge), GFP_KERNEL); |
| 703 | if (!dsi_bridge) { |
| 704 | ret = -ENOMEM; |
| 705 | goto fail; |
| 706 | } |
| 707 | |
| 708 | dsi_bridge->id = id; |
| 709 | |
Archit Taneja | 97e00119 | 2017-01-16 09:42:03 +0530 | [diff] [blame] | 710 | encoder = msm_dsi->encoder; |
Laurent Pinchart | 3bb80f2 | 2016-11-28 17:59:08 +0200 | [diff] [blame] | 711 | |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 712 | bridge = &dsi_bridge->base; |
| 713 | bridge->funcs = &dsi_mgr_bridge_funcs; |
| 714 | |
Laurent Pinchart | 3bb80f2 | 2016-11-28 17:59:08 +0200 | [diff] [blame] | 715 | ret = drm_bridge_attach(encoder, bridge, NULL); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 716 | if (ret) |
| 717 | goto fail; |
| 718 | |
| 719 | return bridge; |
| 720 | |
| 721 | fail: |
| 722 | if (bridge) |
| 723 | msm_dsi_manager_bridge_destroy(bridge); |
| 724 | |
| 725 | return ERR_PTR(ret); |
| 726 | } |
| 727 | |
Archit Taneja | c118e29 | 2015-07-31 14:06:10 +0530 | [diff] [blame] | 728 | struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id) |
| 729 | { |
| 730 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 731 | struct drm_device *dev = msm_dsi->dev; |
| 732 | struct drm_encoder *encoder; |
| 733 | struct drm_bridge *int_bridge, *ext_bridge; |
| 734 | struct drm_connector *connector; |
| 735 | struct list_head *connector_list; |
| 736 | |
| 737 | int_bridge = msm_dsi->bridge; |
| 738 | ext_bridge = msm_dsi->external_bridge = |
| 739 | msm_dsi_host_get_bridge(msm_dsi->host); |
| 740 | |
Archit Taneja | 97e00119 | 2017-01-16 09:42:03 +0530 | [diff] [blame] | 741 | encoder = msm_dsi->encoder; |
Archit Taneja | c118e29 | 2015-07-31 14:06:10 +0530 | [diff] [blame] | 742 | |
| 743 | /* link the internal dsi bridge to the external bridge */ |
Laurent Pinchart | 3bb80f2 | 2016-11-28 17:59:08 +0200 | [diff] [blame] | 744 | drm_bridge_attach(encoder, ext_bridge, int_bridge); |
Archit Taneja | c118e29 | 2015-07-31 14:06:10 +0530 | [diff] [blame] | 745 | |
| 746 | /* |
| 747 | * we need the drm_connector created by the external bridge |
| 748 | * driver (or someone else) to feed it to our driver's |
| 749 | * priv->connector[] list, mainly for msm_fbdev_init() |
| 750 | */ |
| 751 | connector_list = &dev->mode_config.connector_list; |
| 752 | |
| 753 | list_for_each_entry(connector, connector_list, head) { |
Ville Syrjälä | f822240 | 2018-06-28 16:13:14 +0300 | [diff] [blame] | 754 | if (drm_connector_has_possible_encoder(connector, encoder)) |
| 755 | return connector; |
Archit Taneja | c118e29 | 2015-07-31 14:06:10 +0530 | [diff] [blame] | 756 | } |
| 757 | |
| 758 | return ERR_PTR(-ENODEV); |
| 759 | } |
| 760 | |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 761 | void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge) |
| 762 | { |
| 763 | } |
| 764 | |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 765 | int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg) |
| 766 | { |
| 767 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 768 | struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0); |
| 769 | struct mipi_dsi_host *host = msm_dsi->host; |
| 770 | bool is_read = (msg->rx_buf && msg->rx_len); |
| 771 | bool need_sync = (IS_SYNC_NEEDED() && !is_read); |
| 772 | int ret; |
| 773 | |
| 774 | if (!msg->tx_buf || !msg->tx_len) |
| 775 | return 0; |
| 776 | |
| 777 | /* In dual master case, panel requires the same commands sent to |
| 778 | * both DSI links. Host issues the command trigger to both links |
| 779 | * when DSI_1 calls the cmd transfer function, no matter it happens |
| 780 | * before or after DSI_0 cmd transfer. |
| 781 | */ |
| 782 | if (need_sync && (id == DSI_0)) |
| 783 | return is_read ? msg->rx_len : msg->tx_len; |
| 784 | |
| 785 | if (need_sync && msm_dsi0) { |
| 786 | ret = msm_dsi_host_xfer_prepare(msm_dsi0->host, msg); |
| 787 | if (ret) { |
| 788 | pr_err("%s: failed to prepare non-trigger host, %d\n", |
| 789 | __func__, ret); |
| 790 | return ret; |
| 791 | } |
| 792 | } |
| 793 | ret = msm_dsi_host_xfer_prepare(host, msg); |
| 794 | if (ret) { |
| 795 | pr_err("%s: failed to prepare host, %d\n", __func__, ret); |
| 796 | goto restore_host0; |
| 797 | } |
| 798 | |
| 799 | ret = is_read ? msm_dsi_host_cmd_rx(host, msg) : |
| 800 | msm_dsi_host_cmd_tx(host, msg); |
| 801 | |
| 802 | msm_dsi_host_xfer_restore(host, msg); |
| 803 | |
| 804 | restore_host0: |
| 805 | if (need_sync && msm_dsi0) |
| 806 | msm_dsi_host_xfer_restore(msm_dsi0->host, msg); |
| 807 | |
| 808 | return ret; |
| 809 | } |
| 810 | |
Archit Taneja | 4ff9d4c | 2015-10-13 12:20:47 +0530 | [diff] [blame] | 811 | bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len) |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 812 | { |
| 813 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 814 | struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0); |
| 815 | struct mipi_dsi_host *host = msm_dsi->host; |
| 816 | |
| 817 | if (IS_SYNC_NEEDED() && (id == DSI_0)) |
| 818 | return false; |
| 819 | |
| 820 | if (IS_SYNC_NEEDED() && msm_dsi0) |
Archit Taneja | 4ff9d4c | 2015-10-13 12:20:47 +0530 | [diff] [blame] | 821 | msm_dsi_host_cmd_xfer_commit(msm_dsi0->host, dma_base, len); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 822 | |
Archit Taneja | 4ff9d4c | 2015-10-13 12:20:47 +0530 | [diff] [blame] | 823 | msm_dsi_host_cmd_xfer_commit(host, dma_base, len); |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 824 | |
| 825 | return true; |
| 826 | } |
| 827 | |
Archit Taneja | 9c9f6f8 | 2016-12-05 15:24:53 +0530 | [diff] [blame] | 828 | void msm_dsi_manager_attach_dsi_device(int id, u32 device_flags) |
| 829 | { |
| 830 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); |
| 831 | struct drm_device *dev = msm_dsi->dev; |
| 832 | struct msm_drm_private *priv; |
| 833 | struct msm_kms *kms; |
| 834 | struct drm_encoder *encoder; |
| 835 | |
| 836 | /* |
| 837 | * drm_device pointer is assigned to msm_dsi only in the modeset_init |
| 838 | * path. If mipi_dsi_attach() happens in DSI driver's probe path |
| 839 | * (generally the case when we're connected to a drm_panel of the type |
| 840 | * mipi_dsi_device), this would be NULL. In such cases, try to set the |
| 841 | * encoder mode in the DSI connector's detect() op. |
| 842 | */ |
| 843 | if (!dev) |
| 844 | return; |
| 845 | |
| 846 | priv = dev->dev_private; |
| 847 | kms = priv->kms; |
| 848 | encoder = msm_dsi_get_encoder(msm_dsi); |
| 849 | |
| 850 | if (encoder && kms->funcs->set_encoder_mode) |
| 851 | if (!(device_flags & MIPI_DSI_MODE_VIDEO)) |
| 852 | kms->funcs->set_encoder_mode(kms, encoder, true); |
| 853 | } |
| 854 | |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 855 | int msm_dsi_manager_register(struct msm_dsi *msm_dsi) |
| 856 | { |
| 857 | struct msm_dsi_manager *msm_dsim = &msm_dsim_glb; |
| 858 | int id = msm_dsi->id; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 859 | int ret; |
| 860 | |
Lloyd Atkinson | 6e1787c | 2018-01-16 16:26:02 -0500 | [diff] [blame] | 861 | if (id >= DSI_MAX) { |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 862 | pr_err("%s: invalid id %d\n", __func__, id); |
| 863 | return -EINVAL; |
| 864 | } |
| 865 | |
| 866 | if (msm_dsim->dsi[id]) { |
| 867 | pr_err("%s: dsi%d already registered\n", __func__, id); |
| 868 | return -EBUSY; |
| 869 | } |
| 870 | |
| 871 | msm_dsim->dsi[id] = msm_dsi; |
| 872 | |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 873 | 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] | 874 | if (ret) { |
Hai Li | 678565c | 2015-06-10 13:18:18 -0400 | [diff] [blame] | 875 | pr_err("%s: failed to parse dual DSI info\n", __func__); |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 876 | goto fail; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 877 | } |
| 878 | |
Hai Li | 57bf433 | 2016-09-15 14:44:22 +0530 | [diff] [blame] | 879 | ret = dsi_mgr_setup_components(id); |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 880 | if (ret) { |
| 881 | pr_err("%s: failed to register mipi dsi host for DSI %d\n", |
| 882 | __func__, id); |
| 883 | goto fail; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 884 | } |
| 885 | |
Hai Li | 9d32c498 | 2015-05-15 13:04:05 -0400 | [diff] [blame] | 886 | return 0; |
| 887 | |
| 888 | fail: |
| 889 | msm_dsim->dsi[id] = NULL; |
Hai Li | a689554 | 2015-03-31 14:36:33 -0400 | [diff] [blame] | 890 | return ret; |
| 891 | } |
| 892 | |
| 893 | void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi) |
| 894 | { |
| 895 | struct msm_dsi_manager *msm_dsim = &msm_dsim_glb; |
| 896 | |
| 897 | if (msm_dsi->host) |
| 898 | msm_dsi_host_unregister(msm_dsi->host); |
| 899 | msm_dsim->dsi[msm_dsi->id] = NULL; |
| 900 | } |
| 901 | |