Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2016-2017, The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | #define pr_fmt(fmt) "[sde_rsc:%s:%d]: " fmt, __func__, __LINE__ |
| 15 | |
| 16 | #include <linux/kernel.h> |
| 17 | #include <linux/debugfs.h> |
| 18 | #include <linux/of.h> |
| 19 | #include <linux/string.h> |
| 20 | #include <linux/of_address.h> |
| 21 | #include <linux/component.h> |
| 22 | #include <linux/slab.h> |
| 23 | #include <linux/mutex.h> |
| 24 | #include <linux/of_platform.h> |
| 25 | #include <linux/module.h> |
| 26 | |
| 27 | #include <soc/qcom/rpmh.h> |
| 28 | #include <drm/drmP.h> |
| 29 | #include <drm/drm_irq.h> |
Dhaval Patel | 49ef6d7 | 2017-03-26 09:35:53 -0700 | [diff] [blame] | 30 | #include "sde_rsc_priv.h" |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 31 | |
| 32 | /* this time is ~0.02ms */ |
| 33 | #define RSC_BACKOFF_TIME_NS 20000 |
| 34 | |
| 35 | /* next two values should be same based on doc */ |
| 36 | |
| 37 | /* this time is ~0.2ms */ |
| 38 | #define RSC_MODE_THRESHOLD_TIME_IN_NS 200000 |
| 39 | /* this time is ~0.2ms */ |
| 40 | #define RSC_TIME_SLOT_0_NS 200000 |
| 41 | |
| 42 | #define DEFAULT_PANEL_FPS 60 |
| 43 | #define DEFAULT_PANEL_JITTER 5 |
| 44 | #define DEFAULT_PANEL_PREFILL_LINES 16 |
| 45 | #define DEFAULT_PANEL_VTOTAL (480 + DEFAULT_PANEL_PREFILL_LINES) |
| 46 | #define TICKS_IN_NANO_SECOND 1000000000 |
| 47 | |
| 48 | #define MAX_BUFFER_SIZE 256 |
| 49 | |
| 50 | #define TRY_CMD_MODE_SWITCH 0xFFFF |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 51 | #define TRY_CLK_MODE_SWITCH 0xFFFE |
| 52 | #define STATE_UPDATE_NOT_ALLOWED 0xFFFD |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 53 | |
| 54 | static struct sde_rsc_priv *rsc_prv_list[MAX_RSC_COUNT]; |
| 55 | |
| 56 | /** |
| 57 | * sde_rsc_client_create() - create the client for sde rsc. |
| 58 | * Different displays like DSI, HDMI, DP, WB, etc should call this |
| 59 | * api to register their vote for rpmh. They still need to vote for |
| 60 | * power handle to get the clocks. |
| 61 | |
| 62 | * @rsc_index: A client will be created on this RSC. As of now only |
| 63 | * SDE_RSC_INDEX is valid rsc index. |
| 64 | * @name: Caller needs to provide some valid string to identify |
| 65 | * the client. "primary", "dp", "hdmi" are suggested name. |
| 66 | * @is_primary: Caller needs to provide information if client is primary |
| 67 | * or not. Primary client votes will be redirected to |
| 68 | * display rsc. |
| 69 | * |
| 70 | * Return: client node pointer. |
| 71 | */ |
| 72 | struct sde_rsc_client *sde_rsc_client_create(u32 rsc_index, char *client_name, |
| 73 | bool is_primary_client) |
| 74 | { |
| 75 | struct sde_rsc_client *client; |
| 76 | struct sde_rsc_priv *rsc; |
| 77 | |
| 78 | if (!client_name) { |
| 79 | pr_err("client name is null- not supported\n"); |
| 80 | return ERR_PTR(-EINVAL); |
| 81 | } else if (rsc_index >= MAX_RSC_COUNT) { |
| 82 | pr_err("invalid rsc index\n"); |
| 83 | return ERR_PTR(-EINVAL); |
| 84 | } else if (!rsc_prv_list[rsc_index]) { |
| 85 | pr_err("rsc not probed yet or not available\n"); |
| 86 | return ERR_PTR(-EINVAL); |
| 87 | } |
| 88 | |
| 89 | rsc = rsc_prv_list[rsc_index]; |
| 90 | client = kzalloc(sizeof(struct sde_rsc_client), GFP_KERNEL); |
| 91 | if (!client) |
| 92 | return ERR_PTR(-ENOMEM); |
| 93 | |
| 94 | mutex_lock(&rsc->client_lock); |
| 95 | strlcpy(client->name, client_name, MAX_RSC_CLIENT_NAME_LEN); |
| 96 | client->current_state = SDE_RSC_IDLE_STATE; |
| 97 | client->rsc_index = rsc_index; |
| 98 | if (is_primary_client) |
| 99 | rsc->primary_client = client; |
Dhaval Patel | 82c8dbc | 2017-02-18 23:15:10 -0800 | [diff] [blame] | 100 | pr_debug("client %s rsc index:%d primary:%d\n", client_name, |
| 101 | rsc_index, is_primary_client); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 102 | |
| 103 | list_add(&client->list, &rsc->client_list); |
| 104 | mutex_unlock(&rsc->client_lock); |
| 105 | |
| 106 | return client; |
| 107 | } |
Dhaval Patel | 49ef6d7 | 2017-03-26 09:35:53 -0700 | [diff] [blame] | 108 | EXPORT_SYMBOL(sde_rsc_client_create); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 109 | |
| 110 | /** |
| 111 | * sde_rsc_client_destroy() - Destroy the sde rsc client. |
| 112 | * |
| 113 | * @client: Client pointer provided by sde_rsc_client_create(). |
| 114 | * |
| 115 | * Return: none |
| 116 | */ |
| 117 | void sde_rsc_client_destroy(struct sde_rsc_client *client) |
| 118 | { |
| 119 | struct sde_rsc_priv *rsc; |
| 120 | |
| 121 | if (!client) { |
| 122 | pr_debug("invalid client\n"); |
| 123 | goto end; |
| 124 | } else if (client->rsc_index >= MAX_RSC_COUNT) { |
| 125 | pr_err("invalid rsc index\n"); |
| 126 | goto end; |
| 127 | } |
| 128 | |
| 129 | pr_debug("client %s destroyed\n", client->name); |
| 130 | rsc = rsc_prv_list[client->rsc_index]; |
| 131 | if (!rsc) |
| 132 | goto end; |
| 133 | |
| 134 | mutex_lock(&rsc->client_lock); |
| 135 | if (client->current_state != SDE_RSC_IDLE_STATE) |
| 136 | sde_rsc_client_state_update(client, SDE_RSC_IDLE_STATE, |
| 137 | NULL, -1); |
| 138 | list_del_init(&client->list); |
| 139 | mutex_unlock(&rsc->client_lock); |
| 140 | |
| 141 | kfree(client); |
| 142 | end: |
| 143 | return; |
| 144 | } |
Dhaval Patel | 49ef6d7 | 2017-03-26 09:35:53 -0700 | [diff] [blame] | 145 | EXPORT_SYMBOL(sde_rsc_client_destroy); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 146 | |
Dhaval Patel | 031b415 | 2017-03-16 13:03:18 -0700 | [diff] [blame] | 147 | struct sde_rsc_event *sde_rsc_register_event(int rsc_index, uint32_t event_type, |
| 148 | void (*cb_func)(uint32_t event_type, void *usr), void *usr) |
| 149 | { |
| 150 | struct sde_rsc_event *evt; |
| 151 | struct sde_rsc_priv *rsc; |
| 152 | |
| 153 | if (rsc_index >= MAX_RSC_COUNT) { |
| 154 | pr_err("invalid rsc index:%d\n", rsc_index); |
| 155 | return ERR_PTR(-EINVAL); |
| 156 | } else if (!rsc_prv_list[rsc_index]) { |
| 157 | pr_err("rsc idx:%d not probed yet or not available\n", |
| 158 | rsc_index); |
| 159 | return ERR_PTR(-EINVAL); |
| 160 | } else if (!cb_func || !event_type) { |
| 161 | pr_err("no event or cb func\n"); |
| 162 | return ERR_PTR(-EINVAL); |
| 163 | } |
| 164 | |
| 165 | rsc = rsc_prv_list[rsc_index]; |
| 166 | evt = kzalloc(sizeof(struct sde_rsc_event), GFP_KERNEL); |
| 167 | if (!evt) |
| 168 | return ERR_PTR(-ENOMEM); |
| 169 | |
| 170 | evt->event_type = event_type; |
| 171 | evt->rsc_index = rsc_index; |
| 172 | evt->usr = usr; |
| 173 | evt->cb_func = cb_func; |
| 174 | pr_debug("event register type:%d rsc index:%d\n", |
| 175 | event_type, rsc_index); |
| 176 | |
| 177 | mutex_lock(&rsc->client_lock); |
| 178 | list_add(&evt->list, &rsc->event_list); |
| 179 | mutex_unlock(&rsc->client_lock); |
| 180 | |
| 181 | return evt; |
| 182 | } |
Dhaval Patel | 49ef6d7 | 2017-03-26 09:35:53 -0700 | [diff] [blame] | 183 | EXPORT_SYMBOL(sde_rsc_register_event); |
Dhaval Patel | 031b415 | 2017-03-16 13:03:18 -0700 | [diff] [blame] | 184 | |
| 185 | void sde_rsc_unregister_event(struct sde_rsc_event *event) |
| 186 | { |
| 187 | struct sde_rsc_priv *rsc; |
| 188 | |
| 189 | if (!event) { |
| 190 | pr_debug("invalid event client\n"); |
| 191 | goto end; |
| 192 | } else if (event->rsc_index >= MAX_RSC_COUNT) { |
| 193 | pr_err("invalid rsc index\n"); |
| 194 | goto end; |
| 195 | } |
| 196 | |
| 197 | pr_debug("event client destroyed\n"); |
| 198 | rsc = rsc_prv_list[event->rsc_index]; |
| 199 | if (!rsc) |
| 200 | goto end; |
| 201 | |
| 202 | mutex_lock(&rsc->client_lock); |
| 203 | list_del_init(&event->list); |
| 204 | mutex_unlock(&rsc->client_lock); |
| 205 | |
| 206 | kfree(event); |
| 207 | end: |
| 208 | return; |
| 209 | } |
Dhaval Patel | 49ef6d7 | 2017-03-26 09:35:53 -0700 | [diff] [blame] | 210 | EXPORT_SYMBOL(sde_rsc_unregister_event); |
Dhaval Patel | 031b415 | 2017-03-16 13:03:18 -0700 | [diff] [blame] | 211 | |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 212 | static int sde_rsc_clk_enable(struct sde_power_handle *phandle, |
| 213 | struct sde_power_client *pclient, bool enable) |
| 214 | { |
| 215 | int rc = 0; |
| 216 | struct dss_module_power *mp; |
| 217 | |
| 218 | if (!phandle || !pclient) { |
| 219 | pr_err("invalid input argument\n"); |
| 220 | return -EINVAL; |
| 221 | } |
| 222 | |
| 223 | mp = &phandle->mp; |
| 224 | |
| 225 | if (enable) |
| 226 | pclient->refcount++; |
| 227 | else if (pclient->refcount) |
| 228 | pclient->refcount--; |
| 229 | |
| 230 | if (pclient->refcount) |
| 231 | pclient->usecase_ndx = VOTE_INDEX_LOW; |
| 232 | else |
| 233 | pclient->usecase_ndx = VOTE_INDEX_DISABLE; |
| 234 | |
| 235 | if (phandle->current_usecase_ndx == pclient->usecase_ndx) |
| 236 | goto end; |
| 237 | |
| 238 | if (enable) { |
| 239 | rc = msm_dss_enable_clk(mp->clk_config, mp->num_clk, enable); |
| 240 | if (rc) { |
| 241 | pr_err("clock enable failed rc:%d\n", rc); |
| 242 | goto end; |
| 243 | } |
| 244 | } else { |
| 245 | msm_dss_enable_clk(mp->clk_config, mp->num_clk, enable); |
| 246 | } |
| 247 | |
| 248 | phandle->current_usecase_ndx = pclient->usecase_ndx; |
| 249 | |
| 250 | end: |
| 251 | return rc; |
| 252 | } |
| 253 | |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 254 | static u32 sde_rsc_timer_calculate(struct sde_rsc_priv *rsc, |
Dhaval Patel | 82c8dbc | 2017-02-18 23:15:10 -0800 | [diff] [blame] | 255 | struct sde_rsc_cmd_config *cmd_config) |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 256 | { |
| 257 | const u32 cxo_period_ns = 52; |
| 258 | u64 rsc_backoff_time_ns = RSC_BACKOFF_TIME_NS; |
| 259 | u64 rsc_mode_threshold_time_ns = RSC_MODE_THRESHOLD_TIME_IN_NS; |
| 260 | u64 rsc_time_slot_0_ns = RSC_TIME_SLOT_0_NS; |
| 261 | u64 rsc_time_slot_1_ns; |
| 262 | const u64 pdc_jitter = 20; /* 20% more */ |
| 263 | |
| 264 | u64 frame_time_ns, frame_jitter; |
| 265 | u64 line_time_ns, prefill_time_ns; |
| 266 | u64 pdc_backoff_time_ns; |
| 267 | s64 total; |
Dhaval Patel | 82c8dbc | 2017-02-18 23:15:10 -0800 | [diff] [blame] | 268 | int ret = 0; |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 269 | |
| 270 | if (cmd_config) |
| 271 | memcpy(&rsc->cmd_config, cmd_config, sizeof(*cmd_config)); |
| 272 | |
| 273 | /* calculate for 640x480 60 fps resolution by default */ |
| 274 | if (!rsc->cmd_config.fps) |
| 275 | rsc->cmd_config.fps = DEFAULT_PANEL_FPS; |
| 276 | if (!rsc->cmd_config.jitter) |
| 277 | rsc->cmd_config.jitter = DEFAULT_PANEL_JITTER; |
| 278 | if (!rsc->cmd_config.vtotal) |
| 279 | rsc->cmd_config.vtotal = DEFAULT_PANEL_VTOTAL; |
| 280 | if (!rsc->cmd_config.prefill_lines) |
| 281 | rsc->cmd_config.prefill_lines = DEFAULT_PANEL_PREFILL_LINES; |
| 282 | pr_debug("frame fps:%d jitter:%d vtotal:%d prefill lines:%d\n", |
| 283 | rsc->cmd_config.fps, rsc->cmd_config.jitter, |
| 284 | rsc->cmd_config.vtotal, rsc->cmd_config.prefill_lines); |
| 285 | |
| 286 | /* 1 nano second */ |
| 287 | frame_time_ns = TICKS_IN_NANO_SECOND; |
| 288 | frame_time_ns = div_u64(frame_time_ns, rsc->cmd_config.fps); |
| 289 | |
| 290 | frame_jitter = frame_time_ns * rsc->cmd_config.jitter; |
| 291 | /* convert it to percentage */ |
| 292 | frame_jitter = div_u64(frame_jitter, 100); |
| 293 | |
| 294 | line_time_ns = frame_time_ns; |
| 295 | line_time_ns = div_u64(line_time_ns, rsc->cmd_config.vtotal); |
| 296 | prefill_time_ns = line_time_ns * rsc->cmd_config.prefill_lines; |
| 297 | |
| 298 | total = frame_time_ns - frame_jitter - prefill_time_ns; |
| 299 | if (total < 0) { |
| 300 | pr_err("invalid total time period time:%llu jiter_time:%llu blanking time:%llu\n", |
| 301 | frame_time_ns, frame_jitter, prefill_time_ns); |
| 302 | total = 0; |
| 303 | } |
| 304 | |
| 305 | total = div_u64(total, cxo_period_ns); |
| 306 | rsc->timer_config.static_wakeup_time_ns = total; |
| 307 | |
| 308 | pr_debug("frame time:%llu frame jiter_time:%llu\n", |
| 309 | frame_time_ns, frame_jitter); |
| 310 | pr_debug("line time:%llu prefill time ps:%llu\n", |
| 311 | line_time_ns, prefill_time_ns); |
| 312 | pr_debug("static wakeup time:%lld cxo:%u\n", total, cxo_period_ns); |
| 313 | |
| 314 | pdc_backoff_time_ns = rsc_backoff_time_ns; |
| 315 | rsc_backoff_time_ns = div_u64(rsc_backoff_time_ns, cxo_period_ns); |
| 316 | rsc->timer_config.rsc_backoff_time_ns = (u32) rsc_backoff_time_ns; |
| 317 | |
| 318 | pdc_backoff_time_ns *= pdc_jitter; |
| 319 | pdc_backoff_time_ns = div_u64(pdc_backoff_time_ns, 100); |
| 320 | rsc->timer_config.pdc_backoff_time_ns = (u32) pdc_backoff_time_ns; |
| 321 | |
| 322 | rsc_mode_threshold_time_ns = |
| 323 | div_u64(rsc_mode_threshold_time_ns, cxo_period_ns); |
| 324 | rsc->timer_config.rsc_mode_threshold_time_ns |
| 325 | = (u32) rsc_mode_threshold_time_ns; |
| 326 | |
| 327 | /* time_slot_0 for mode0 latency */ |
| 328 | rsc_time_slot_0_ns = div_u64(rsc_time_slot_0_ns, cxo_period_ns); |
| 329 | rsc->timer_config.rsc_time_slot_0_ns = (u32) rsc_time_slot_0_ns; |
| 330 | |
| 331 | /* time_slot_1 for mode1 latency */ |
| 332 | rsc_time_slot_1_ns = frame_time_ns; |
| 333 | rsc_time_slot_1_ns = div_u64(rsc_time_slot_1_ns, cxo_period_ns); |
| 334 | rsc->timer_config.rsc_time_slot_1_ns = (u32) rsc_time_slot_1_ns; |
| 335 | |
| 336 | /* mode 2 is infinite */ |
| 337 | rsc->timer_config.rsc_time_slot_2_ns = 0xFFFFFFFF; |
Dhaval Patel | 82c8dbc | 2017-02-18 23:15:10 -0800 | [diff] [blame] | 338 | |
| 339 | if (rsc->hw_ops.init) { |
| 340 | ret = rsc->hw_ops.init(rsc); |
| 341 | if (ret) |
| 342 | pr_err("sde rsc: hw init failed ret:%d\n", ret); |
| 343 | } |
| 344 | |
| 345 | return ret; |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 346 | } |
| 347 | |
| 348 | static int sde_rsc_switch_to_idle(struct sde_rsc_priv *rsc) |
| 349 | { |
| 350 | struct sde_rsc_client *client; |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 351 | int rc = STATE_UPDATE_NOT_ALLOWED; |
| 352 | bool idle_switch = true; |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 353 | |
| 354 | list_for_each_entry(client, &rsc->client_list, list) |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 355 | if (client->current_state != SDE_RSC_IDLE_STATE) { |
| 356 | idle_switch = false; |
| 357 | break; |
| 358 | } |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 359 | |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 360 | if (!idle_switch) { |
| 361 | /** |
| 362 | * following code needs to run the loop through each |
| 363 | * client because they might be in different order |
| 364 | * sorting is not possible; only preference is available |
| 365 | */ |
| 366 | |
| 367 | /* first check if any vid client active */ |
| 368 | list_for_each_entry(client, &rsc->client_list, list) |
| 369 | if (client->current_state == SDE_RSC_VID_STATE) |
| 370 | return rc; |
| 371 | |
| 372 | /* now try cmd state switch */ |
| 373 | list_for_each_entry(client, &rsc->client_list, list) |
| 374 | if (client->current_state == SDE_RSC_CMD_STATE) |
| 375 | return TRY_CMD_MODE_SWITCH; |
| 376 | |
| 377 | /* now try clk state switch */ |
| 378 | list_for_each_entry(client, &rsc->client_list, list) |
| 379 | if (client->current_state == SDE_RSC_CLK_STATE) |
| 380 | return TRY_CLK_MODE_SWITCH; |
| 381 | |
| 382 | } else if (rsc->hw_ops.state_update) { |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 383 | rc = rsc->hw_ops.state_update(rsc, SDE_RSC_IDLE_STATE); |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 384 | } |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 385 | |
| 386 | return rc; |
| 387 | } |
| 388 | |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 389 | static int sde_rsc_switch_to_cmd(struct sde_rsc_priv *rsc, |
Dhaval Patel | 82c8dbc | 2017-02-18 23:15:10 -0800 | [diff] [blame] | 390 | struct sde_rsc_cmd_config *config, |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 391 | struct sde_rsc_client *caller_client, bool wait_req) |
| 392 | { |
| 393 | struct sde_rsc_client *client; |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 394 | int rc = STATE_UPDATE_NOT_ALLOWED; |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 395 | |
| 396 | if (!rsc->primary_client) { |
| 397 | pr_err("primary client not available for cmd state switch\n"); |
| 398 | rc = -EINVAL; |
| 399 | goto end; |
| 400 | } else if (caller_client != rsc->primary_client) { |
| 401 | pr_err("primary client state:%d not cmd state request\n", |
| 402 | rsc->primary_client->current_state); |
| 403 | rc = -EINVAL; |
| 404 | goto end; |
| 405 | } |
| 406 | |
Dhaval Patel | 82c8dbc | 2017-02-18 23:15:10 -0800 | [diff] [blame] | 407 | /* update timers - might not be available at next switch */ |
| 408 | if (config) |
| 409 | sde_rsc_timer_calculate(rsc, config); |
| 410 | |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 411 | /* any one client in video state blocks the cmd state switch */ |
| 412 | list_for_each_entry(client, &rsc->client_list, list) |
| 413 | if (client->current_state == SDE_RSC_VID_STATE) |
| 414 | goto end; |
| 415 | |
| 416 | if (rsc->hw_ops.state_update) |
| 417 | rc = rsc->hw_ops.state_update(rsc, SDE_RSC_CMD_STATE); |
| 418 | |
| 419 | /* wait for vsync */ |
| 420 | if (!rc && wait_req) |
| 421 | drm_wait_one_vblank(rsc->master_drm, |
| 422 | rsc->primary_client->crtc_id); |
| 423 | end: |
| 424 | return rc; |
| 425 | } |
| 426 | |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 427 | static bool sde_rsc_switch_to_clk(struct sde_rsc_priv *rsc) |
| 428 | { |
| 429 | struct sde_rsc_client *client; |
| 430 | int rc = STATE_UPDATE_NOT_ALLOWED; |
| 431 | |
| 432 | list_for_each_entry(client, &rsc->client_list, list) |
| 433 | if ((client->current_state == SDE_RSC_VID_STATE) || |
| 434 | (client->current_state == SDE_RSC_CMD_STATE)) |
| 435 | goto end; |
| 436 | |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 437 | if (rsc->hw_ops.state_update) |
Dhaval Patel | fbb11f0 | 2017-04-06 13:43:28 -0700 | [diff] [blame^] | 438 | rc = rsc->hw_ops.state_update(rsc, SDE_RSC_CLK_STATE); |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 439 | end: |
| 440 | return rc; |
| 441 | } |
| 442 | |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 443 | static bool sde_rsc_switch_to_vid(struct sde_rsc_priv *rsc, |
Dhaval Patel | 82c8dbc | 2017-02-18 23:15:10 -0800 | [diff] [blame] | 444 | struct sde_rsc_cmd_config *config, |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 445 | struct sde_rsc_client *caller_client, bool wait_req) |
| 446 | { |
| 447 | int rc = 0; |
| 448 | |
| 449 | /* update timers - might not be available at next switch */ |
| 450 | if (config && (caller_client == rsc->primary_client)) |
| 451 | sde_rsc_timer_calculate(rsc, config); |
| 452 | |
| 453 | /* video state switch should be done immediately */ |
| 454 | if (rsc->hw_ops.state_update) |
| 455 | rc = rsc->hw_ops.state_update(rsc, SDE_RSC_VID_STATE); |
| 456 | |
| 457 | /* wait for vsync */ |
| 458 | if (!rc && rsc->primary_client && wait_req) |
| 459 | drm_wait_one_vblank(rsc->master_drm, |
| 460 | rsc->primary_client->crtc_id); |
| 461 | return rc; |
| 462 | } |
| 463 | |
| 464 | /** |
| 465 | * sde_rsc_client_state_update() - rsc client state update |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 466 | * Video mode, cmd mode and clk state are suppoed as modes. A client need to |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 467 | * set this property during panel config time. A switching client can set the |
| 468 | * property to change the state |
| 469 | * |
| 470 | * @client: Client pointer provided by sde_rsc_client_create(). |
| 471 | * @state: Client state - video/cmd |
| 472 | * @config: fps, vtotal, porches, etc configuration for command mode |
| 473 | * panel |
| 474 | * @crtc_id: current client's crtc id |
| 475 | * |
| 476 | * Return: error code. |
| 477 | */ |
| 478 | int sde_rsc_client_state_update(struct sde_rsc_client *caller_client, |
| 479 | enum sde_rsc_state state, |
Dhaval Patel | 82c8dbc | 2017-02-18 23:15:10 -0800 | [diff] [blame] | 480 | struct sde_rsc_cmd_config *config, int crtc_id) |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 481 | { |
| 482 | int rc = 0; |
| 483 | struct sde_rsc_priv *rsc; |
| 484 | bool wait_requested = false; |
| 485 | |
| 486 | if (!caller_client) { |
| 487 | pr_err("invalid client for rsc state update\n"); |
| 488 | return -EINVAL; |
| 489 | } else if (caller_client->rsc_index >= MAX_RSC_COUNT) { |
| 490 | pr_err("invalid rsc index\n"); |
| 491 | return -EINVAL; |
| 492 | } |
| 493 | |
| 494 | rsc = rsc_prv_list[caller_client->rsc_index]; |
| 495 | if (!rsc) |
| 496 | return -EINVAL; |
| 497 | |
| 498 | mutex_lock(&rsc->client_lock); |
| 499 | caller_client->crtc_id = crtc_id; |
| 500 | caller_client->current_state = state; |
| 501 | |
| 502 | if (rsc->master_drm == NULL) { |
| 503 | pr_err("invalid master component binding\n"); |
| 504 | rc = -EINVAL; |
| 505 | goto end; |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 506 | } else if ((rsc->current_state == state) && !config) { |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 507 | pr_debug("no state change: %d\n", state); |
| 508 | goto end; |
| 509 | } |
| 510 | |
| 511 | pr_debug("%pS: rsc state:%d request client:%s state:%d\n", |
| 512 | __builtin_return_address(0), rsc->current_state, |
| 513 | caller_client->name, state); |
| 514 | |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 515 | /* only switch state needs vsync wait */ |
| 516 | wait_requested = (rsc->current_state == SDE_RSC_VID_STATE) || |
| 517 | (rsc->current_state == SDE_RSC_CMD_STATE); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 518 | |
| 519 | if (rsc->power_collapse) |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 520 | sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, true); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 521 | |
| 522 | switch (state) { |
| 523 | case SDE_RSC_IDLE_STATE: |
| 524 | rc = sde_rsc_switch_to_idle(rsc); |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 525 | |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 526 | /* video state client might be exiting; try cmd state switch */ |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 527 | if (rc == TRY_CMD_MODE_SWITCH) { |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 528 | rc = sde_rsc_switch_to_cmd(rsc, NULL, |
| 529 | rsc->primary_client, wait_requested); |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 530 | if (!rc) |
| 531 | state = SDE_RSC_CMD_STATE; |
| 532 | |
| 533 | /* cmd state client might be exiting; try clk state switch */ |
| 534 | } else if (rc == TRY_CLK_MODE_SWITCH) { |
| 535 | rc = sde_rsc_switch_to_clk(rsc); |
| 536 | if (!rc) |
| 537 | state = SDE_RSC_CLK_STATE; |
| 538 | } |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 539 | break; |
| 540 | |
| 541 | case SDE_RSC_CMD_STATE: |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 542 | rc = sde_rsc_switch_to_cmd(rsc, config, caller_client, |
| 543 | wait_requested); |
| 544 | break; |
| 545 | |
| 546 | case SDE_RSC_VID_STATE: |
| 547 | rc = sde_rsc_switch_to_vid(rsc, config, caller_client, |
| 548 | wait_requested); |
| 549 | break; |
| 550 | |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 551 | case SDE_RSC_CLK_STATE: |
| 552 | rc = sde_rsc_switch_to_clk(rsc); |
| 553 | break; |
| 554 | |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 555 | default: |
| 556 | pr_err("invalid state handling %d\n", state); |
| 557 | break; |
| 558 | } |
| 559 | |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 560 | if (rc == STATE_UPDATE_NOT_ALLOWED) { |
| 561 | rc = 0; |
| 562 | goto clk_disable; |
| 563 | } else if (rc) { |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 564 | pr_err("state update failed rc:%d\n", rc); |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 565 | goto clk_disable; |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 566 | } |
| 567 | |
| 568 | pr_debug("state switch successfully complete: %d\n", state); |
| 569 | rsc->current_state = state; |
| 570 | |
Dhaval Patel | a65b0f1 | 2017-03-16 00:36:55 -0700 | [diff] [blame] | 571 | clk_disable: |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 572 | if (rsc->power_collapse) |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 573 | sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, false); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 574 | end: |
| 575 | mutex_unlock(&rsc->client_lock); |
| 576 | return rc; |
| 577 | } |
Dhaval Patel | 49ef6d7 | 2017-03-26 09:35:53 -0700 | [diff] [blame] | 578 | EXPORT_SYMBOL(sde_rsc_client_state_update); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 579 | |
| 580 | /** |
| 581 | * sde_rsc_client_vote() - ab/ib vote from rsc client |
| 582 | * |
| 583 | * @client: Client pointer provided by sde_rsc_client_create(). |
| 584 | * @ab: aggregated bandwidth vote from client. |
| 585 | * @ib: instant bandwidth vote from client. |
| 586 | * |
| 587 | * Return: error code. |
| 588 | */ |
| 589 | int sde_rsc_client_vote(struct sde_rsc_client *caller_client, |
Dhaval Patel | 4d42460 | 2017-02-18 19:40:14 -0800 | [diff] [blame] | 590 | u64 ab_vote, u64 ib_vote) |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 591 | { |
| 592 | int rc = 0; |
| 593 | struct sde_rsc_priv *rsc; |
| 594 | bool amc_mode = false; |
| 595 | enum rpmh_state state; |
| 596 | |
| 597 | if (!caller_client) { |
| 598 | pr_err("invalid client for ab/ib vote\n"); |
| 599 | return -EINVAL; |
| 600 | } else if (caller_client->rsc_index >= MAX_RSC_COUNT) { |
| 601 | pr_err("invalid rsc index\n"); |
| 602 | return -EINVAL; |
| 603 | } |
| 604 | |
| 605 | rsc = rsc_prv_list[caller_client->rsc_index]; |
| 606 | if (!rsc) |
| 607 | return -EINVAL; |
| 608 | |
| 609 | if (caller_client != rsc->primary_client) { |
| 610 | pr_err("only primary client can use sde rsc:: curr client name:%s\n", |
| 611 | caller_client->name); |
| 612 | return -EINVAL; |
| 613 | } |
| 614 | pr_debug("client:%s ab:%llu ib:%llu\n", |
| 615 | caller_client->name, ab_vote, ib_vote); |
| 616 | |
| 617 | mutex_lock(&rsc->client_lock); |
| 618 | if ((caller_client->current_state == SDE_RSC_IDLE_STATE) || |
| 619 | (rsc->current_state == SDE_RSC_IDLE_STATE)) { |
| 620 | |
| 621 | pr_err("invalid state: client state:%d rsc state:%d\n", |
| 622 | caller_client->current_state, rsc->current_state); |
| 623 | rc = -EINVAL; |
| 624 | goto end; |
| 625 | } |
| 626 | |
| 627 | if (rsc->hw_ops.is_amc_mode) |
| 628 | amc_mode = rsc->hw_ops.is_amc_mode(rsc); |
| 629 | |
| 630 | if (rsc->current_state == SDE_RSC_CMD_STATE) |
Dhaval Patel | 4d42460 | 2017-02-18 19:40:14 -0800 | [diff] [blame] | 631 | state = RPMH_WAKE_ONLY_STATE; |
| 632 | else if (amc_mode) |
| 633 | state = RPMH_ACTIVE_ONLY_STATE; |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 634 | else |
Dhaval Patel | 4d42460 | 2017-02-18 19:40:14 -0800 | [diff] [blame] | 635 | state = RPMH_AWAKE_STATE; |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 636 | |
| 637 | if (rsc->hw_ops.tcs_wait) { |
| 638 | rc = rsc->hw_ops.tcs_wait(rsc); |
| 639 | if (rc) { |
| 640 | pr_err("tcs is still busy; can't send command\n"); |
| 641 | if (rsc->hw_ops.tcs_use_ok) |
| 642 | rsc->hw_ops.tcs_use_ok(rsc); |
| 643 | goto end; |
| 644 | } |
| 645 | } |
| 646 | |
| 647 | sde_power_data_bus_set_quota(&rsc->phandle, rsc->pclient, |
| 648 | SDE_POWER_HANDLE_DATA_BUS_CLIENT_RT, ab_vote, ib_vote); |
| 649 | |
| 650 | if (rsc->hw_ops.tcs_use_ok) |
| 651 | rsc->hw_ops.tcs_use_ok(rsc); |
| 652 | |
| 653 | end: |
| 654 | mutex_unlock(&rsc->client_lock); |
| 655 | return rc; |
| 656 | } |
Dhaval Patel | 49ef6d7 | 2017-03-26 09:35:53 -0700 | [diff] [blame] | 657 | EXPORT_SYMBOL(sde_rsc_client_vote); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 658 | |
| 659 | static int _sde_debugfs_status_show(struct seq_file *s, void *data) |
| 660 | { |
| 661 | struct sde_rsc_priv *rsc; |
| 662 | struct sde_rsc_client *client; |
| 663 | int ret; |
| 664 | |
| 665 | if (!s || !s->private) |
| 666 | return -EINVAL; |
| 667 | |
| 668 | rsc = s->private; |
| 669 | |
| 670 | mutex_lock(&rsc->client_lock); |
| 671 | seq_printf(s, "rsc current state:%d\n", rsc->current_state); |
| 672 | seq_printf(s, "wraper backoff time(ns):%d\n", |
| 673 | rsc->timer_config.static_wakeup_time_ns); |
| 674 | seq_printf(s, "rsc backoff time(ns):%d\n", |
| 675 | rsc->timer_config.rsc_backoff_time_ns); |
| 676 | seq_printf(s, "pdc backoff time(ns):%d\n", |
| 677 | rsc->timer_config.pdc_backoff_time_ns); |
| 678 | seq_printf(s, "rsc mode threshold time(ns):%d\n", |
| 679 | rsc->timer_config.rsc_mode_threshold_time_ns); |
| 680 | seq_printf(s, "rsc time slot 0(ns):%d\n", |
| 681 | rsc->timer_config.rsc_time_slot_0_ns); |
| 682 | seq_printf(s, "rsc time slot 1(ns):%d\n", |
| 683 | rsc->timer_config.rsc_time_slot_1_ns); |
| 684 | seq_printf(s, "frame fps:%d jitter:%d vtotal:%d prefill lines:%d\n", |
| 685 | rsc->cmd_config.fps, rsc->cmd_config.jitter, |
| 686 | rsc->cmd_config.vtotal, rsc->cmd_config.prefill_lines); |
| 687 | |
| 688 | seq_puts(s, "\n"); |
| 689 | |
| 690 | list_for_each_entry(client, &rsc->client_list, list) |
| 691 | seq_printf(s, "\t client:%s state:%d\n", |
| 692 | client->name, client->current_state); |
| 693 | |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 694 | sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, true); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 695 | |
| 696 | if (rsc->hw_ops.debug_show) { |
| 697 | ret = rsc->hw_ops.debug_show(s, rsc); |
| 698 | if (ret) |
| 699 | pr_err("sde rsc: hw debug failed ret:%d\n", ret); |
| 700 | } |
| 701 | |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 702 | sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, false); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 703 | mutex_unlock(&rsc->client_lock); |
| 704 | |
| 705 | return 0; |
| 706 | } |
| 707 | |
| 708 | static int _sde_debugfs_status_open(struct inode *inode, struct file *file) |
| 709 | { |
| 710 | return single_open(file, _sde_debugfs_status_show, inode->i_private); |
| 711 | } |
| 712 | |
| 713 | static int _sde_debugfs_mode_ctrl_open(struct inode *inode, struct file *file) |
| 714 | { |
| 715 | /* non-seekable */ |
| 716 | file->private_data = inode->i_private; |
| 717 | return nonseekable_open(inode, file); |
| 718 | } |
| 719 | |
| 720 | static ssize_t _sde_debugfs_mode_ctrl_read(struct file *file, char __user *buf, |
| 721 | size_t count, loff_t *ppos) |
| 722 | { |
| 723 | struct sde_rsc_priv *rsc = file->private_data; |
| 724 | char buffer[MAX_BUFFER_SIZE]; |
| 725 | int blen = 0; |
| 726 | |
| 727 | if (*ppos || !rsc || !rsc->hw_ops.mode_ctrl) |
| 728 | return 0; |
| 729 | |
| 730 | mutex_lock(&rsc->client_lock); |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 731 | sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, true); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 732 | |
| 733 | blen = rsc->hw_ops.mode_ctrl(rsc, MODE_READ, buffer, |
| 734 | MAX_BUFFER_SIZE, 0); |
| 735 | |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 736 | sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, false); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 737 | mutex_unlock(&rsc->client_lock); |
| 738 | |
| 739 | if (blen < 0) |
| 740 | return 0; |
| 741 | |
| 742 | if (copy_to_user(buf, buffer, blen)) |
| 743 | return -EFAULT; |
| 744 | |
| 745 | *ppos += blen; |
| 746 | return blen; |
| 747 | } |
| 748 | |
| 749 | static ssize_t _sde_debugfs_mode_ctrl_write(struct file *file, |
| 750 | const char __user *p, size_t count, loff_t *ppos) |
| 751 | { |
| 752 | struct sde_rsc_priv *rsc = file->private_data; |
| 753 | char *input, *mode; |
| 754 | u32 mode0_state = 0, mode1_state = 0, mode2_state = 0; |
| 755 | |
| 756 | if (!rsc || !rsc->hw_ops.mode_ctrl) |
| 757 | return 0; |
| 758 | |
| 759 | input = kmalloc(count, GFP_KERNEL); |
| 760 | if (!input) |
| 761 | return -ENOMEM; |
| 762 | |
| 763 | if (copy_from_user(input, p, count)) { |
| 764 | kfree(input); |
| 765 | return -EFAULT; |
| 766 | } |
| 767 | input[count - 1] = '\0'; |
| 768 | |
| 769 | mutex_lock(&rsc->client_lock); |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 770 | sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, true); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 771 | |
| 772 | mode = strnstr(input, "mode0=", strlen("mode0=")); |
| 773 | if (mode) { |
| 774 | mode0_state = mode[0] - '0'; |
| 775 | mode0_state &= BIT(0); |
| 776 | rsc->hw_ops.mode_ctrl(rsc, MODE0_UPDATE, NULL, 0, mode0_state); |
| 777 | goto end; |
| 778 | } |
| 779 | |
| 780 | mode = strnstr(input, "mode1=", strlen("mode1=")); |
| 781 | if (mode) { |
| 782 | mode1_state = mode[0] - '0'; |
| 783 | mode1_state &= BIT(0); |
| 784 | rsc->hw_ops.mode_ctrl(rsc, MODE1_UPDATE, NULL, 0, mode1_state); |
| 785 | goto end; |
| 786 | } |
| 787 | |
| 788 | mode = strnstr(input, "mode2=", strlen("mode2=")); |
| 789 | if (mode) { |
| 790 | mode2_state = mode[0] - '0'; |
| 791 | mode2_state &= BIT(0); |
| 792 | rsc->hw_ops.mode_ctrl(rsc, MODE2_UPDATE, NULL, 0, mode2_state); |
| 793 | } |
| 794 | |
| 795 | end: |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 796 | sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, false); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 797 | mutex_unlock(&rsc->client_lock); |
| 798 | |
| 799 | pr_err("req: mode0:%d mode1:%d mode2:%d\n", mode0_state, mode1_state, |
| 800 | mode2_state); |
| 801 | kfree(input); |
| 802 | return count; |
| 803 | } |
| 804 | |
| 805 | static int _sde_debugfs_vsync_mode_open(struct inode *inode, struct file *file) |
| 806 | { |
| 807 | /* non-seekable */ |
| 808 | file->private_data = inode->i_private; |
| 809 | return nonseekable_open(inode, file); |
| 810 | } |
| 811 | |
| 812 | static ssize_t _sde_debugfs_vsync_mode_read(struct file *file, char __user *buf, |
| 813 | size_t count, loff_t *ppos) |
| 814 | { |
| 815 | struct sde_rsc_priv *rsc = file->private_data; |
| 816 | char buffer[MAX_BUFFER_SIZE]; |
| 817 | int blen = 0; |
| 818 | |
| 819 | if (*ppos || !rsc || !rsc->hw_ops.hw_vsync) |
| 820 | return 0; |
| 821 | |
| 822 | mutex_lock(&rsc->client_lock); |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 823 | sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, true); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 824 | |
| 825 | blen = rsc->hw_ops.hw_vsync(rsc, VSYNC_READ, buffer, |
| 826 | MAX_BUFFER_SIZE, 0); |
| 827 | |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 828 | sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, false); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 829 | mutex_unlock(&rsc->client_lock); |
| 830 | |
| 831 | if (blen < 0) |
| 832 | return 0; |
| 833 | |
| 834 | if (copy_to_user(buf, buffer, blen)) |
| 835 | return -EFAULT; |
| 836 | |
| 837 | *ppos += blen; |
| 838 | return blen; |
| 839 | } |
| 840 | |
| 841 | static ssize_t _sde_debugfs_vsync_mode_write(struct file *file, |
| 842 | const char __user *p, size_t count, loff_t *ppos) |
| 843 | { |
| 844 | struct sde_rsc_priv *rsc = file->private_data; |
| 845 | char *input, *vsync_mode; |
| 846 | u32 vsync_state = 0; |
| 847 | |
| 848 | if (!rsc || !rsc->hw_ops.hw_vsync) |
| 849 | return 0; |
| 850 | |
| 851 | input = kmalloc(count, GFP_KERNEL); |
| 852 | if (!input) |
| 853 | return -ENOMEM; |
| 854 | |
| 855 | if (copy_from_user(input, p, count)) { |
| 856 | kfree(input); |
| 857 | return -EFAULT; |
| 858 | } |
| 859 | input[count - 1] = '\0'; |
| 860 | |
| 861 | vsync_mode = strnstr(input, "vsync_mode=", strlen("vsync_mode=")); |
| 862 | if (vsync_mode) { |
| 863 | vsync_state = vsync_mode[0] - '0'; |
| 864 | vsync_state &= 0x7; |
| 865 | } |
| 866 | |
| 867 | mutex_lock(&rsc->client_lock); |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 868 | sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, true); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 869 | |
| 870 | if (vsync_state) |
| 871 | rsc->hw_ops.hw_vsync(rsc, VSYNC_ENABLE, NULL, |
| 872 | 0, vsync_state - 1); |
| 873 | else |
| 874 | rsc->hw_ops.hw_vsync(rsc, VSYNC_DISABLE, NULL, 0, 0); |
| 875 | |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 876 | sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, false); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 877 | mutex_unlock(&rsc->client_lock); |
| 878 | |
| 879 | kfree(input); |
| 880 | return count; |
| 881 | } |
| 882 | |
| 883 | static const struct file_operations debugfs_status_fops = { |
| 884 | .open = _sde_debugfs_status_open, |
| 885 | .read = seq_read, |
| 886 | .llseek = seq_lseek, |
| 887 | .release = single_release, |
| 888 | }; |
| 889 | |
| 890 | static const struct file_operations mode_control_fops = { |
| 891 | .open = _sde_debugfs_mode_ctrl_open, |
| 892 | .read = _sde_debugfs_mode_ctrl_read, |
| 893 | .write = _sde_debugfs_mode_ctrl_write, |
| 894 | }; |
| 895 | |
| 896 | static const struct file_operations vsync_status_fops = { |
| 897 | .open = _sde_debugfs_vsync_mode_open, |
| 898 | .read = _sde_debugfs_vsync_mode_read, |
| 899 | .write = _sde_debugfs_vsync_mode_write, |
| 900 | }; |
| 901 | |
| 902 | static void _sde_rsc_init_debugfs(struct sde_rsc_priv *rsc, char *name) |
| 903 | { |
| 904 | rsc->debugfs_root = debugfs_create_dir(name, NULL); |
| 905 | if (!rsc->debugfs_root) |
| 906 | return; |
| 907 | |
| 908 | /* don't error check these */ |
| 909 | debugfs_create_file("status", 0444, rsc->debugfs_root, rsc, |
| 910 | &debugfs_status_fops); |
| 911 | debugfs_create_file("mode_control", 0644, rsc->debugfs_root, rsc, |
| 912 | &mode_control_fops); |
| 913 | debugfs_create_file("vsync_mode", 0644, rsc->debugfs_root, rsc, |
| 914 | &vsync_status_fops); |
| 915 | debugfs_create_x32("debug_mode", 0644, rsc->debugfs_root, |
| 916 | &rsc->debug_mode); |
| 917 | } |
| 918 | |
| 919 | static void sde_rsc_deinit(struct platform_device *pdev, |
| 920 | struct sde_rsc_priv *rsc) |
| 921 | { |
| 922 | if (!rsc) |
| 923 | return; |
| 924 | |
| 925 | if (rsc->pclient) |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 926 | sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, false); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 927 | if (rsc->fs) |
| 928 | devm_regulator_put(rsc->fs); |
| 929 | if (rsc->wrapper_io.base) |
| 930 | msm_dss_iounmap(&rsc->wrapper_io); |
| 931 | if (rsc->drv_io.base) |
| 932 | msm_dss_iounmap(&rsc->drv_io); |
| 933 | if (rsc->pclient) |
| 934 | sde_power_client_destroy(&rsc->phandle, rsc->pclient); |
| 935 | |
| 936 | sde_power_resource_deinit(pdev, &rsc->phandle); |
| 937 | debugfs_remove_recursive(rsc->debugfs_root); |
| 938 | kfree(rsc); |
| 939 | } |
| 940 | |
| 941 | /** |
| 942 | * sde_rsc_bind - bind rsc device with controlling device |
| 943 | * @dev: Pointer to base of platform device |
| 944 | * @master: Pointer to container of drm device |
| 945 | * @data: Pointer to private data |
| 946 | * Returns: Zero on success |
| 947 | */ |
| 948 | static int sde_rsc_bind(struct device *dev, |
| 949 | struct device *master, |
| 950 | void *data) |
| 951 | { |
| 952 | struct sde_rsc_priv *rsc; |
| 953 | struct drm_device *drm; |
| 954 | struct platform_device *pdev = to_platform_device(dev); |
| 955 | |
| 956 | if (!dev || !pdev || !master) { |
| 957 | pr_err("invalid param(s), dev %pK, pdev %pK, master %pK\n", |
| 958 | dev, pdev, master); |
| 959 | return -EINVAL; |
| 960 | } |
| 961 | |
| 962 | drm = dev_get_drvdata(master); |
| 963 | rsc = platform_get_drvdata(pdev); |
| 964 | if (!drm || !rsc) { |
| 965 | pr_err("invalid param(s), drm %pK, rsc %pK\n", |
| 966 | drm, rsc); |
| 967 | return -EINVAL; |
| 968 | } |
| 969 | |
| 970 | mutex_lock(&rsc->client_lock); |
| 971 | rsc->master_drm = drm; |
| 972 | mutex_unlock(&rsc->client_lock); |
| 973 | |
| 974 | return 0; |
| 975 | } |
| 976 | |
| 977 | /** |
| 978 | * sde_rsc_unbind - unbind rsc from controlling device |
| 979 | * @dev: Pointer to base of platform device |
| 980 | * @master: Pointer to container of drm device |
| 981 | * @data: Pointer to private data |
| 982 | */ |
| 983 | static void sde_rsc_unbind(struct device *dev, |
| 984 | struct device *master, void *data) |
| 985 | { |
| 986 | struct sde_rsc_priv *rsc; |
| 987 | struct platform_device *pdev = to_platform_device(dev); |
| 988 | |
| 989 | if (!dev || !pdev) { |
| 990 | pr_err("invalid param(s)\n"); |
| 991 | return; |
| 992 | } |
| 993 | |
| 994 | rsc = platform_get_drvdata(pdev); |
| 995 | if (!rsc) { |
| 996 | pr_err("invalid display rsc\n"); |
| 997 | return; |
| 998 | } |
| 999 | |
| 1000 | mutex_lock(&rsc->client_lock); |
| 1001 | rsc->master_drm = NULL; |
| 1002 | mutex_unlock(&rsc->client_lock); |
| 1003 | } |
| 1004 | |
| 1005 | static const struct component_ops sde_rsc_comp_ops = { |
| 1006 | .bind = sde_rsc_bind, |
| 1007 | .unbind = sde_rsc_unbind, |
| 1008 | }; |
| 1009 | |
| 1010 | static int sde_rsc_probe(struct platform_device *pdev) |
| 1011 | { |
| 1012 | int ret; |
| 1013 | struct sde_rsc_priv *rsc; |
| 1014 | static int counter; |
| 1015 | char name[MAX_RSC_CLIENT_NAME_LEN]; |
| 1016 | |
| 1017 | rsc = kzalloc(sizeof(*rsc), GFP_KERNEL); |
| 1018 | if (!rsc) { |
| 1019 | ret = -ENOMEM; |
| 1020 | goto rsc_alloc_fail; |
| 1021 | } |
| 1022 | |
| 1023 | platform_set_drvdata(pdev, rsc); |
| 1024 | of_property_read_u32(pdev->dev.of_node, "qcom,sde-rsc-version", |
| 1025 | &rsc->version); |
| 1026 | |
| 1027 | ret = sde_power_resource_init(pdev, &rsc->phandle); |
| 1028 | if (ret) { |
| 1029 | pr_err("sde rsc:power resource init failed ret:%d\n", ret); |
| 1030 | goto sde_rsc_fail; |
| 1031 | } |
| 1032 | |
| 1033 | rsc->pclient = sde_power_client_create(&rsc->phandle, "rsc"); |
| 1034 | if (IS_ERR_OR_NULL(rsc->pclient)) { |
| 1035 | ret = PTR_ERR(rsc->pclient); |
| 1036 | rsc->pclient = NULL; |
| 1037 | pr_err("sde rsc:power client create failed ret:%d\n", ret); |
| 1038 | goto sde_rsc_fail; |
| 1039 | } |
| 1040 | |
| 1041 | ret = msm_dss_ioremap_byname(pdev, &rsc->wrapper_io, "wrapper"); |
| 1042 | if (ret) { |
| 1043 | pr_err("sde rsc: wrapper io data mapping failed ret=%d\n", ret); |
| 1044 | goto sde_rsc_fail; |
| 1045 | } |
| 1046 | |
| 1047 | ret = msm_dss_ioremap_byname(pdev, &rsc->drv_io, "drv"); |
| 1048 | if (ret) { |
| 1049 | pr_err("sde rsc: drv io data mapping failed ret:%d\n", ret); |
| 1050 | goto sde_rsc_fail; |
| 1051 | } |
| 1052 | |
| 1053 | rsc->fs = devm_regulator_get(&pdev->dev, "vdd"); |
| 1054 | if (IS_ERR_OR_NULL(rsc->fs)) { |
| 1055 | rsc->fs = NULL; |
| 1056 | pr_err("unable to get regulator\n"); |
| 1057 | goto sde_rsc_fail; |
| 1058 | } |
| 1059 | |
| 1060 | ret = sde_rsc_hw_register(rsc); |
| 1061 | if (ret) { |
| 1062 | pr_err("sde rsc: hw register failed ret:%d\n", ret); |
| 1063 | goto sde_rsc_fail; |
| 1064 | } |
| 1065 | |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 1066 | if (sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, true)) { |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 1067 | pr_err("failed to enable sde rsc power resources\n"); |
| 1068 | goto sde_rsc_fail; |
| 1069 | } |
| 1070 | |
Dhaval Patel | 82c8dbc | 2017-02-18 23:15:10 -0800 | [diff] [blame] | 1071 | if (sde_rsc_timer_calculate(rsc, NULL)) |
| 1072 | goto sde_rsc_fail; |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 1073 | |
Dhaval Patel | fcd9e91 | 2017-03-16 00:54:09 -0700 | [diff] [blame] | 1074 | sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, false); |
| 1075 | |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 1076 | INIT_LIST_HEAD(&rsc->client_list); |
Dhaval Patel | fbb11f0 | 2017-04-06 13:43:28 -0700 | [diff] [blame^] | 1077 | INIT_LIST_HEAD(&rsc->event_list); |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 1078 | mutex_init(&rsc->client_lock); |
| 1079 | |
| 1080 | pr_info("sde rsc index:%d probed successfully\n", |
| 1081 | SDE_RSC_INDEX + counter); |
| 1082 | |
| 1083 | rsc_prv_list[SDE_RSC_INDEX + counter] = rsc; |
| 1084 | snprintf(name, MAX_RSC_CLIENT_NAME_LEN, "%s%d", "sde_rsc", counter); |
| 1085 | _sde_rsc_init_debugfs(rsc, name); |
| 1086 | counter++; |
Dhaval Patel | fbb11f0 | 2017-04-06 13:43:28 -0700 | [diff] [blame^] | 1087 | rsc->power_collapse = true; |
Dhaval Patel | 020f7e12 | 2016-11-15 14:39:18 -0800 | [diff] [blame] | 1088 | |
| 1089 | ret = component_add(&pdev->dev, &sde_rsc_comp_ops); |
| 1090 | if (ret) |
| 1091 | pr_debug("component add failed, ret=%d\n", ret); |
| 1092 | ret = 0; |
| 1093 | |
| 1094 | return ret; |
| 1095 | |
| 1096 | sde_rsc_fail: |
| 1097 | sde_rsc_deinit(pdev, rsc); |
| 1098 | rsc_alloc_fail: |
| 1099 | return ret; |
| 1100 | } |
| 1101 | |
| 1102 | static int sde_rsc_remove(struct platform_device *pdev) |
| 1103 | { |
| 1104 | struct sde_rsc_priv *rsc = platform_get_drvdata(pdev); |
| 1105 | |
| 1106 | sde_rsc_deinit(pdev, rsc); |
| 1107 | return 0; |
| 1108 | } |
| 1109 | |
| 1110 | static const struct of_device_id dt_match[] = { |
| 1111 | { .compatible = "qcom,sde-rsc"}, |
| 1112 | {} |
| 1113 | }; |
| 1114 | |
| 1115 | MODULE_DEVICE_TABLE(of, dt_match); |
| 1116 | |
| 1117 | static struct platform_driver sde_rsc_platform_driver = { |
| 1118 | .probe = sde_rsc_probe, |
| 1119 | .remove = sde_rsc_remove, |
| 1120 | .driver = { |
| 1121 | .name = "sde_rsc", |
| 1122 | .of_match_table = dt_match, |
| 1123 | }, |
| 1124 | }; |
| 1125 | |
| 1126 | static int __init sde_rsc_register(void) |
| 1127 | { |
| 1128 | return platform_driver_register(&sde_rsc_platform_driver); |
| 1129 | } |
| 1130 | |
| 1131 | static void __exit sde_rsc_unregister(void) |
| 1132 | { |
| 1133 | platform_driver_unregister(&sde_rsc_platform_driver); |
| 1134 | } |
| 1135 | |
| 1136 | module_init(sde_rsc_register); |
| 1137 | module_exit(sde_rsc_unregister); |