| File: | dev/pci/drm/drm_crtc_helper.c |
| Warning: | line 648, column 2 Value stored to 'count' is never read |
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| 1 | /* |
| 2 | * Copyright (c) 2006-2008 Intel Corporation |
| 3 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> |
| 4 | * |
| 5 | * DRM core CRTC related functions |
| 6 | * |
| 7 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 8 | * documentation for any purpose is hereby granted without fee, provided that |
| 9 | * the above copyright notice appear in all copies and that both that copyright |
| 10 | * notice and this permission notice appear in supporting documentation, and |
| 11 | * that the name of the copyright holders not be used in advertising or |
| 12 | * publicity pertaining to distribution of the software without specific, |
| 13 | * written prior permission. The copyright holders make no representations |
| 14 | * about the suitability of this software for any purpose. It is provided "as |
| 15 | * is" without express or implied warranty. |
| 16 | * |
| 17 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| 18 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| 19 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
| 20 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
| 21 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 22 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| 23 | * OF THIS SOFTWARE. |
| 24 | * |
| 25 | * Authors: |
| 26 | * Keith Packard |
| 27 | * Eric Anholt <eric@anholt.net> |
| 28 | * Dave Airlie <airlied@linux.ie> |
| 29 | * Jesse Barnes <jesse.barnes@intel.com> |
| 30 | */ |
| 31 | |
| 32 | #include <linux/export.h> |
| 33 | #include <linux/kernel.h> |
| 34 | #include <linux/moduleparam.h> |
| 35 | #include <linux/dynamic_debug.h> |
| 36 | |
| 37 | #include <drm/drm_atomic.h> |
| 38 | #include <drm/drm_atomic_helper.h> |
| 39 | #include <drm/drm_atomic_uapi.h> |
| 40 | #include <drm/drm_bridge.h> |
| 41 | #include <drm/drm_crtc.h> |
| 42 | #include <drm/drm_crtc_helper.h> |
| 43 | #include <drm/drm_drv.h> |
| 44 | #include <drm/drm_edid.h> |
| 45 | #include <drm/drm_encoder.h> |
| 46 | #include <drm/drm_fb_helper.h> |
| 47 | #include <drm/drm_fourcc.h> |
| 48 | #include <drm/drm_framebuffer.h> |
| 49 | #include <drm/drm_print.h> |
| 50 | #include <drm/drm_vblank.h> |
| 51 | |
| 52 | #include "drm_crtc_helper_internal.h" |
| 53 | |
| 54 | DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, 0, |
| 55 | "DRM_UT_CORE", |
| 56 | "DRM_UT_DRIVER", |
| 57 | "DRM_UT_KMS", |
| 58 | "DRM_UT_PRIME", |
| 59 | "DRM_UT_ATOMIC", |
| 60 | "DRM_UT_VBL", |
| 61 | "DRM_UT_STATE", |
| 62 | "DRM_UT_LEASE", |
| 63 | "DRM_UT_DP", |
| 64 | "DRM_UT_DRMRES"); |
| 65 | |
| 66 | /** |
| 67 | * DOC: overview |
| 68 | * |
| 69 | * The CRTC modeset helper library provides a default set_config implementation |
| 70 | * in drm_crtc_helper_set_config(). Plus a few other convenience functions using |
| 71 | * the same callbacks which drivers can use to e.g. restore the modeset |
| 72 | * configuration on resume with drm_helper_resume_force_mode(). |
| 73 | * |
| 74 | * Note that this helper library doesn't track the current power state of CRTCs |
| 75 | * and encoders. It can call callbacks like &drm_encoder_helper_funcs.dpms even |
| 76 | * though the hardware is already in the desired state. This deficiency has been |
| 77 | * fixed in the atomic helpers. |
| 78 | * |
| 79 | * The driver callbacks are mostly compatible with the atomic modeset helpers, |
| 80 | * except for the handling of the primary plane: Atomic helpers require that the |
| 81 | * primary plane is implemented as a real standalone plane and not directly tied |
| 82 | * to the CRTC state. For easier transition this library provides functions to |
| 83 | * implement the old semantics required by the CRTC helpers using the new plane |
| 84 | * and atomic helper callbacks. |
| 85 | * |
| 86 | * Drivers are strongly urged to convert to the atomic helpers (by way of first |
| 87 | * converting to the plane helpers). New drivers must not use these functions |
| 88 | * but need to implement the atomic interface instead, potentially using the |
| 89 | * atomic helpers for that. |
| 90 | * |
| 91 | * These legacy modeset helpers use the same function table structures as |
| 92 | * all other modesetting helpers. See the documentation for struct |
| 93 | * &drm_crtc_helper_funcs, &struct drm_encoder_helper_funcs and struct |
| 94 | * &drm_connector_helper_funcs. |
| 95 | */ |
| 96 | |
| 97 | /** |
| 98 | * drm_helper_encoder_in_use - check if a given encoder is in use |
| 99 | * @encoder: encoder to check |
| 100 | * |
| 101 | * Checks whether @encoder is with the current mode setting output configuration |
| 102 | * in use by any connector. This doesn't mean that it is actually enabled since |
| 103 | * the DPMS state is tracked separately. |
| 104 | * |
| 105 | * Returns: |
| 106 | * True if @encoder is used, false otherwise. |
| 107 | */ |
| 108 | bool_Bool drm_helper_encoder_in_use(struct drm_encoder *encoder) |
| 109 | { |
| 110 | struct drm_connector *connector; |
| 111 | struct drm_connector_list_iter conn_iter; |
| 112 | struct drm_device *dev = encoder->dev; |
| 113 | |
| 114 | WARN_ON(drm_drv_uses_atomic_modeset(dev))({ int __ret = !!(drm_drv_uses_atomic_modeset(dev)); if (__ret ) printf("WARNING %s failed at %s:%d\n", "drm_drv_uses_atomic_modeset(dev)" , "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c", 114); __builtin_expect (!!(__ret), 0); }); |
| 115 | |
| 116 | /* |
| 117 | * We can expect this mutex to be locked if we are not panicking. |
| 118 | * Locking is currently fubar in the panic handler. |
| 119 | */ |
| 120 | if (!oops_in_progress_in_dbg_master()) { |
| 121 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex))({ int __ret = !!(!(rw_status(&dev->mode_config.mutex) != 0)); if (__ret) printf("WARNING %s failed at %s:%d\n", "!(rw_status(&dev->mode_config.mutex) != 0)" , "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c", 121); __builtin_expect (!!(__ret), 0); }); |
| 122 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex))({ int __ret = !!(!drm_modeset_is_locked(&dev->mode_config .connection_mutex)); if (__ret) printf("WARNING %s failed at %s:%d\n" , "!drm_modeset_is_locked(&dev->mode_config.connection_mutex)" , "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c", 122); __builtin_expect (!!(__ret), 0); }); |
| 123 | } |
| 124 | |
| 125 | |
| 126 | drm_connector_list_iter_begin(dev, &conn_iter); |
| 127 | drm_for_each_connector_iter(connector, &conn_iter)while ((connector = drm_connector_list_iter_next(&conn_iter ))) { |
| 128 | if (connector->encoder == encoder) { |
| 129 | drm_connector_list_iter_end(&conn_iter); |
| 130 | return true1; |
| 131 | } |
| 132 | } |
| 133 | drm_connector_list_iter_end(&conn_iter); |
| 134 | return false0; |
| 135 | } |
| 136 | EXPORT_SYMBOL(drm_helper_encoder_in_use); |
| 137 | |
| 138 | /** |
| 139 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config |
| 140 | * @crtc: CRTC to check |
| 141 | * |
| 142 | * Checks whether @crtc is with the current mode setting output configuration |
| 143 | * in use by any connector. This doesn't mean that it is actually enabled since |
| 144 | * the DPMS state is tracked separately. |
| 145 | * |
| 146 | * Returns: |
| 147 | * True if @crtc is used, false otherwise. |
| 148 | */ |
| 149 | bool_Bool drm_helper_crtc_in_use(struct drm_crtc *crtc) |
| 150 | { |
| 151 | struct drm_encoder *encoder; |
| 152 | struct drm_device *dev = crtc->dev; |
| 153 | |
| 154 | WARN_ON(drm_drv_uses_atomic_modeset(dev))({ int __ret = !!(drm_drv_uses_atomic_modeset(dev)); if (__ret ) printf("WARNING %s failed at %s:%d\n", "drm_drv_uses_atomic_modeset(dev)" , "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c", 154); __builtin_expect (!!(__ret), 0); }); |
| 155 | |
| 156 | /* |
| 157 | * We can expect this mutex to be locked if we are not panicking. |
| 158 | * Locking is currently fubar in the panic handler. |
| 159 | */ |
| 160 | if (!oops_in_progress_in_dbg_master()) |
| 161 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex))({ int __ret = !!(!(rw_status(&dev->mode_config.mutex) != 0)); if (__ret) printf("WARNING %s failed at %s:%d\n", "!(rw_status(&dev->mode_config.mutex) != 0)" , "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c", 161); __builtin_expect (!!(__ret), 0); }); |
| 162 | |
| 163 | drm_for_each_encoder(encoder, dev)for (encoder = ({ const __typeof( ((__typeof(*encoder) *)0)-> head ) *__mptr = ((&(dev)->mode_config.encoder_list)-> next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );}); &encoder->head != (& (dev)->mode_config.encoder_list); encoder = ({ const __typeof ( ((__typeof(*encoder) *)0)->head ) *__mptr = (encoder-> head.next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );})) |
| 164 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
| 165 | return true1; |
| 166 | return false0; |
| 167 | } |
| 168 | EXPORT_SYMBOL(drm_helper_crtc_in_use); |
| 169 | |
| 170 | static void |
| 171 | drm_encoder_disable(struct drm_encoder *encoder) |
| 172 | { |
| 173 | const struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
| 174 | |
| 175 | if (!encoder_funcs) |
| 176 | return; |
| 177 | |
| 178 | if (encoder_funcs->disable) |
| 179 | (*encoder_funcs->disable)(encoder); |
| 180 | else if (encoder_funcs->dpms) |
| 181 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF3); |
| 182 | } |
| 183 | |
| 184 | static void __drm_helper_disable_unused_functions(struct drm_device *dev) |
| 185 | { |
| 186 | struct drm_encoder *encoder; |
| 187 | struct drm_crtc *crtc; |
| 188 | |
| 189 | drm_warn_on_modeset_not_all_locked(dev); |
| 190 | |
| 191 | drm_for_each_encoder(encoder, dev)for (encoder = ({ const __typeof( ((__typeof(*encoder) *)0)-> head ) *__mptr = ((&(dev)->mode_config.encoder_list)-> next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );}); &encoder->head != (& (dev)->mode_config.encoder_list); encoder = ({ const __typeof ( ((__typeof(*encoder) *)0)->head ) *__mptr = (encoder-> head.next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );})) { |
| 192 | if (!drm_helper_encoder_in_use(encoder)) { |
| 193 | drm_encoder_disable(encoder); |
| 194 | /* disconnect encoder from any connector */ |
| 195 | encoder->crtc = NULL((void *)0); |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | drm_for_each_crtc(crtc, dev)for (crtc = ({ const __typeof( ((__typeof(*crtc) *)0)->head ) *__mptr = ((&(dev)->mode_config.crtc_list)->next ); (__typeof(*crtc) *)( (char *)__mptr - __builtin_offsetof(__typeof (*crtc), head) );}); &crtc->head != (&(dev)->mode_config .crtc_list); crtc = ({ const __typeof( ((__typeof(*crtc) *)0) ->head ) *__mptr = (crtc->head.next); (__typeof(*crtc) * )( (char *)__mptr - __builtin_offsetof(__typeof(*crtc), head) );})) { |
| 200 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 201 | |
| 202 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
| 203 | if (!crtc->enabled) { |
| 204 | if (crtc_funcs->disable) |
| 205 | (*crtc_funcs->disable)(crtc); |
| 206 | else |
| 207 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF3); |
| 208 | crtc->primary->fb = NULL((void *)0); |
| 209 | } |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | /** |
| 214 | * drm_helper_disable_unused_functions - disable unused objects |
| 215 | * @dev: DRM device |
| 216 | * |
| 217 | * This function walks through the entire mode setting configuration of @dev. It |
| 218 | * will remove any CRTC links of unused encoders and encoder links of |
| 219 | * disconnected connectors. Then it will disable all unused encoders and CRTCs |
| 220 | * either by calling their disable callback if available or by calling their |
| 221 | * dpms callback with DRM_MODE_DPMS_OFF. |
| 222 | * |
| 223 | * NOTE: |
| 224 | * |
| 225 | * This function is part of the legacy modeset helper library and will cause |
| 226 | * major confusion with atomic drivers. This is because atomic helpers guarantee |
| 227 | * to never call ->disable() hooks on a disabled function, or ->enable() hooks |
| 228 | * on an enabled functions. drm_helper_disable_unused_functions() on the other |
| 229 | * hand throws such guarantees into the wind and calls disable hooks |
| 230 | * unconditionally on unused functions. |
| 231 | */ |
| 232 | void drm_helper_disable_unused_functions(struct drm_device *dev) |
| 233 | { |
| 234 | WARN_ON(drm_drv_uses_atomic_modeset(dev))({ int __ret = !!(drm_drv_uses_atomic_modeset(dev)); if (__ret ) printf("WARNING %s failed at %s:%d\n", "drm_drv_uses_atomic_modeset(dev)" , "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c", 234); __builtin_expect (!!(__ret), 0); }); |
| 235 | |
| 236 | drm_modeset_lock_all(dev); |
| 237 | __drm_helper_disable_unused_functions(dev); |
| 238 | drm_modeset_unlock_all(dev); |
| 239 | } |
| 240 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
| 241 | |
| 242 | /* |
| 243 | * Check the CRTC we're going to map each output to vs. its current |
| 244 | * CRTC. If they don't match, we have to disable the output and the CRTC |
| 245 | * since the driver will have to re-route things. |
| 246 | */ |
| 247 | static void |
| 248 | drm_crtc_prepare_encoders(struct drm_device *dev) |
| 249 | { |
| 250 | const struct drm_encoder_helper_funcs *encoder_funcs; |
| 251 | struct drm_encoder *encoder; |
| 252 | |
| 253 | drm_for_each_encoder(encoder, dev)for (encoder = ({ const __typeof( ((__typeof(*encoder) *)0)-> head ) *__mptr = ((&(dev)->mode_config.encoder_list)-> next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );}); &encoder->head != (& (dev)->mode_config.encoder_list); encoder = ({ const __typeof ( ((__typeof(*encoder) *)0)->head ) *__mptr = (encoder-> head.next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );})) { |
| 254 | encoder_funcs = encoder->helper_private; |
| 255 | if (!encoder_funcs) |
| 256 | continue; |
| 257 | |
| 258 | /* Disable unused encoders */ |
| 259 | if (encoder->crtc == NULL((void *)0)) |
| 260 | drm_encoder_disable(encoder); |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * drm_crtc_helper_set_mode - internal helper to set a mode |
| 266 | * @crtc: CRTC to program |
| 267 | * @mode: mode to use |
| 268 | * @x: horizontal offset into the surface |
| 269 | * @y: vertical offset into the surface |
| 270 | * @old_fb: old framebuffer, for cleanup |
| 271 | * |
| 272 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
| 273 | * to fixup or reject the mode prior to trying to set it. This is an internal |
| 274 | * helper that drivers could e.g. use to update properties that require the |
| 275 | * entire output pipe to be disabled and re-enabled in a new configuration. For |
| 276 | * example for changing whether audio is enabled on a hdmi link or for changing |
| 277 | * panel fitter or dither attributes. It is also called by the |
| 278 | * drm_crtc_helper_set_config() helper function to drive the mode setting |
| 279 | * sequence. |
| 280 | * |
| 281 | * Returns: |
| 282 | * True if the mode was set successfully, false otherwise. |
| 283 | */ |
| 284 | bool_Bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
| 285 | struct drm_display_mode *mode, |
| 286 | int x, int y, |
| 287 | struct drm_framebuffer *old_fb) |
| 288 | { |
| 289 | struct drm_device *dev = crtc->dev; |
| 290 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
| 291 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 292 | const struct drm_encoder_helper_funcs *encoder_funcs; |
| 293 | int saved_x, saved_y; |
| 294 | bool_Bool saved_enabled; |
| 295 | struct drm_encoder *encoder; |
| 296 | bool_Bool ret = true1; |
| 297 | |
| 298 | WARN_ON(drm_drv_uses_atomic_modeset(dev))({ int __ret = !!(drm_drv_uses_atomic_modeset(dev)); if (__ret ) printf("WARNING %s failed at %s:%d\n", "drm_drv_uses_atomic_modeset(dev)" , "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c", 298); __builtin_expect (!!(__ret), 0); }); |
| 299 | |
| 300 | drm_warn_on_modeset_not_all_locked(dev); |
| 301 | |
| 302 | saved_enabled = crtc->enabled; |
| 303 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
| 304 | if (!crtc->enabled) |
| 305 | return true1; |
| 306 | |
| 307 | adjusted_mode = drm_mode_duplicate(dev, mode); |
| 308 | if (!adjusted_mode) { |
| 309 | crtc->enabled = saved_enabled; |
| 310 | return false0; |
| 311 | } |
| 312 | |
| 313 | drm_mode_init(&saved_mode, &crtc->mode); |
| 314 | drm_mode_init(&saved_hwmode, &crtc->hwmode); |
| 315 | saved_x = crtc->x; |
| 316 | saved_y = crtc->y; |
| 317 | |
| 318 | /* Update crtc values up front so the driver can rely on them for mode |
| 319 | * setting. |
| 320 | */ |
| 321 | drm_mode_copy(&crtc->mode, mode); |
| 322 | crtc->x = x; |
| 323 | crtc->y = y; |
| 324 | |
| 325 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
| 326 | * adjust it according to limitations or connector properties, and also |
| 327 | * a chance to reject the mode entirely. |
| 328 | */ |
| 329 | drm_for_each_encoder(encoder, dev)for (encoder = ({ const __typeof( ((__typeof(*encoder) *)0)-> head ) *__mptr = ((&(dev)->mode_config.encoder_list)-> next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );}); &encoder->head != (& (dev)->mode_config.encoder_list); encoder = ({ const __typeof ( ((__typeof(*encoder) *)0)->head ) *__mptr = (encoder-> head.next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );})) { |
| 330 | |
| 331 | if (encoder->crtc != crtc) |
| 332 | continue; |
| 333 | |
| 334 | encoder_funcs = encoder->helper_private; |
| 335 | if (!encoder_funcs) |
| 336 | continue; |
| 337 | |
| 338 | encoder_funcs = encoder->helper_private; |
| 339 | if (encoder_funcs->mode_fixup) { |
| 340 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
| 341 | adjusted_mode))) { |
| 342 | DRM_DEBUG_KMS("Encoder fixup failed\n")___drm_dbg(((void *)0), DRM_UT_KMS, "Encoder fixup failed\n"); |
| 343 | goto done; |
| 344 | } |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | if (crtc_funcs->mode_fixup) { |
| 349 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, |
| 350 | adjusted_mode))) { |
| 351 | DRM_DEBUG_KMS("CRTC fixup failed\n")___drm_dbg(((void *)0), DRM_UT_KMS, "CRTC fixup failed\n"); |
| 352 | goto done; |
| 353 | } |
| 354 | } |
| 355 | DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name)___drm_dbg(((void *)0), DRM_UT_KMS, "[CRTC:%d:%s]\n", crtc-> base.id, crtc->name); |
| 356 | |
| 357 | drm_mode_copy(&crtc->hwmode, adjusted_mode); |
| 358 | |
| 359 | /* Prepare the encoders and CRTCs before setting the mode. */ |
| 360 | drm_for_each_encoder(encoder, dev)for (encoder = ({ const __typeof( ((__typeof(*encoder) *)0)-> head ) *__mptr = ((&(dev)->mode_config.encoder_list)-> next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );}); &encoder->head != (& (dev)->mode_config.encoder_list); encoder = ({ const __typeof ( ((__typeof(*encoder) *)0)->head ) *__mptr = (encoder-> head.next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );})) { |
| 361 | |
| 362 | if (encoder->crtc != crtc) |
| 363 | continue; |
| 364 | |
| 365 | encoder_funcs = encoder->helper_private; |
| 366 | if (!encoder_funcs) |
| 367 | continue; |
| 368 | |
| 369 | /* Disable the encoders as the first thing we do. */ |
| 370 | if (encoder_funcs->prepare) |
| 371 | encoder_funcs->prepare(encoder); |
| 372 | } |
| 373 | |
| 374 | drm_crtc_prepare_encoders(dev); |
| 375 | |
| 376 | crtc_funcs->prepare(crtc); |
| 377 | |
| 378 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
| 379 | * on the DPLL. |
| 380 | */ |
| 381 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
| 382 | if (!ret) |
| 383 | goto done; |
| 384 | |
| 385 | drm_for_each_encoder(encoder, dev)for (encoder = ({ const __typeof( ((__typeof(*encoder) *)0)-> head ) *__mptr = ((&(dev)->mode_config.encoder_list)-> next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );}); &encoder->head != (& (dev)->mode_config.encoder_list); encoder = ({ const __typeof ( ((__typeof(*encoder) *)0)->head ) *__mptr = (encoder-> head.next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );})) { |
| 386 | |
| 387 | if (encoder->crtc != crtc) |
| 388 | continue; |
| 389 | |
| 390 | encoder_funcs = encoder->helper_private; |
| 391 | if (!encoder_funcs) |
| 392 | continue; |
| 393 | |
| 394 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%s]\n",___drm_dbg(((void *)0), DRM_UT_KMS, "[ENCODER:%d:%s] set [MODE:%s]\n" , encoder->base.id, encoder->name, mode->name) |
| 395 | encoder->base.id, encoder->name, mode->name)___drm_dbg(((void *)0), DRM_UT_KMS, "[ENCODER:%d:%s] set [MODE:%s]\n" , encoder->base.id, encoder->name, mode->name); |
| 396 | if (encoder_funcs->mode_set) |
| 397 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
| 398 | } |
| 399 | |
| 400 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
| 401 | crtc_funcs->commit(crtc); |
| 402 | |
| 403 | drm_for_each_encoder(encoder, dev)for (encoder = ({ const __typeof( ((__typeof(*encoder) *)0)-> head ) *__mptr = ((&(dev)->mode_config.encoder_list)-> next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );}); &encoder->head != (& (dev)->mode_config.encoder_list); encoder = ({ const __typeof ( ((__typeof(*encoder) *)0)->head ) *__mptr = (encoder-> head.next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );})) { |
| 404 | |
| 405 | if (encoder->crtc != crtc) |
| 406 | continue; |
| 407 | |
| 408 | encoder_funcs = encoder->helper_private; |
| 409 | if (!encoder_funcs) |
| 410 | continue; |
| 411 | |
| 412 | if (encoder_funcs->commit) |
| 413 | encoder_funcs->commit(encoder); |
| 414 | } |
| 415 | |
| 416 | /* Calculate and store various constants which |
| 417 | * are later needed by vblank and swap-completion |
| 418 | * timestamping. They are derived from true hwmode. |
| 419 | */ |
| 420 | drm_calc_timestamping_constants(crtc, &crtc->hwmode); |
| 421 | |
| 422 | /* FIXME: add subpixel order */ |
| 423 | done: |
| 424 | drm_mode_destroy(dev, adjusted_mode); |
| 425 | if (!ret) { |
| 426 | crtc->enabled = saved_enabled; |
| 427 | drm_mode_copy(&crtc->mode, &saved_mode); |
| 428 | drm_mode_copy(&crtc->hwmode, &saved_hwmode); |
| 429 | crtc->x = saved_x; |
| 430 | crtc->y = saved_y; |
| 431 | } |
| 432 | |
| 433 | return ret; |
| 434 | } |
| 435 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
| 436 | |
| 437 | static void |
| 438 | drm_crtc_helper_disable(struct drm_crtc *crtc) |
| 439 | { |
| 440 | struct drm_device *dev = crtc->dev; |
| 441 | struct drm_connector *connector; |
| 442 | struct drm_encoder *encoder; |
| 443 | |
| 444 | /* Decouple all encoders and their attached connectors from this crtc */ |
| 445 | drm_for_each_encoder(encoder, dev)for (encoder = ({ const __typeof( ((__typeof(*encoder) *)0)-> head ) *__mptr = ((&(dev)->mode_config.encoder_list)-> next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );}); &encoder->head != (& (dev)->mode_config.encoder_list); encoder = ({ const __typeof ( ((__typeof(*encoder) *)0)->head ) *__mptr = (encoder-> head.next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );})) { |
| 446 | struct drm_connector_list_iter conn_iter; |
| 447 | |
| 448 | if (encoder->crtc != crtc) |
| 449 | continue; |
| 450 | |
| 451 | drm_connector_list_iter_begin(dev, &conn_iter); |
| 452 | drm_for_each_connector_iter(connector, &conn_iter)while ((connector = drm_connector_list_iter_next(&conn_iter ))) { |
| 453 | if (connector->encoder != encoder) |
| 454 | continue; |
| 455 | |
| 456 | connector->encoder = NULL((void *)0); |
| 457 | |
| 458 | /* |
| 459 | * drm_helper_disable_unused_functions() ought to be |
| 460 | * doing this, but since we've decoupled the encoder |
| 461 | * from the connector above, the required connection |
| 462 | * between them is henceforth no longer available. |
| 463 | */ |
| 464 | connector->dpms = DRM_MODE_DPMS_OFF3; |
| 465 | |
| 466 | /* we keep a reference while the encoder is bound */ |
| 467 | drm_connector_put(connector); |
| 468 | } |
| 469 | drm_connector_list_iter_end(&conn_iter); |
| 470 | } |
| 471 | |
| 472 | __drm_helper_disable_unused_functions(dev); |
| 473 | } |
| 474 | |
| 475 | /* |
| 476 | * For connectors that support multiple encoders, either the |
| 477 | * .atomic_best_encoder() or .best_encoder() operation must be implemented. |
| 478 | */ |
| 479 | struct drm_encoder * |
| 480 | drm_connector_get_single_encoder(struct drm_connector *connector) |
| 481 | { |
| 482 | struct drm_encoder *encoder; |
| 483 | |
| 484 | WARN_ON(hweight32(connector->possible_encoders) > 1)({ int __ret = !!(hweight32(connector->possible_encoders) > 1); if (__ret) printf("WARNING %s failed at %s:%d\n", "hweight32(connector->possible_encoders) > 1" , "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c", 484); __builtin_expect (!!(__ret), 0); }); |
| 485 | drm_connector_for_each_possible_encoder(connector, encoder)for ((encoder) = ({ const __typeof( ((__typeof(*(encoder)) *) 0)->head ) *__mptr = ((&((connector)->dev)->mode_config .encoder_list)->next); (__typeof(*(encoder)) *)( (char *)__mptr - __builtin_offsetof(__typeof(*(encoder)), head) );}); & (encoder)->head != (&((connector)->dev)->mode_config .encoder_list); (encoder) = ({ const __typeof( ((__typeof(*(encoder )) *)0)->head ) *__mptr = ((encoder)->head.next); (__typeof (*(encoder)) *)( (char *)__mptr - __builtin_offsetof(__typeof (*(encoder)), head) );})) if (!(((connector)->possible_encoders ) & drm_encoder_mask(encoder))) {} else |
| 486 | return encoder; |
| 487 | |
| 488 | return NULL((void *)0); |
| 489 | } |
| 490 | |
| 491 | /** |
| 492 | * drm_crtc_helper_set_config - set a new config from userspace |
| 493 | * @set: mode set configuration |
| 494 | * @ctx: lock acquire context, not used here |
| 495 | * |
| 496 | * The drm_crtc_helper_set_config() helper function implements the of |
| 497 | * &drm_crtc_funcs.set_config callback for drivers using the legacy CRTC |
| 498 | * helpers. |
| 499 | * |
| 500 | * It first tries to locate the best encoder for each connector by calling the |
| 501 | * connector @drm_connector_helper_funcs.best_encoder helper operation. |
| 502 | * |
| 503 | * After locating the appropriate encoders, the helper function will call the |
| 504 | * mode_fixup encoder and CRTC helper operations to adjust the requested mode, |
| 505 | * or reject it completely in which case an error will be returned to the |
| 506 | * application. If the new configuration after mode adjustment is identical to |
| 507 | * the current configuration the helper function will return without performing |
| 508 | * any other operation. |
| 509 | * |
| 510 | * If the adjusted mode is identical to the current mode but changes to the |
| 511 | * frame buffer need to be applied, the drm_crtc_helper_set_config() function |
| 512 | * will call the CRTC &drm_crtc_helper_funcs.mode_set_base helper operation. |
| 513 | * |
| 514 | * If the adjusted mode differs from the current mode, or if the |
| 515 | * ->mode_set_base() helper operation is not provided, the helper function |
| 516 | * performs a full mode set sequence by calling the ->prepare(), ->mode_set() |
| 517 | * and ->commit() CRTC and encoder helper operations, in that order. |
| 518 | * Alternatively it can also use the dpms and disable helper operations. For |
| 519 | * details see &struct drm_crtc_helper_funcs and struct |
| 520 | * &drm_encoder_helper_funcs. |
| 521 | * |
| 522 | * This function is deprecated. New drivers must implement atomic modeset |
| 523 | * support, for which this function is unsuitable. Instead drivers should use |
| 524 | * drm_atomic_helper_set_config(). |
| 525 | * |
| 526 | * Returns: |
| 527 | * Returns 0 on success, negative errno numbers on failure. |
| 528 | */ |
| 529 | int drm_crtc_helper_set_config(struct drm_mode_set *set, |
| 530 | struct drm_modeset_acquire_ctx *ctx) |
| 531 | { |
| 532 | struct drm_device *dev; |
| 533 | struct drm_crtc **save_encoder_crtcs, *new_crtc; |
| 534 | struct drm_encoder **save_connector_encoders, *new_encoder, *encoder; |
| 535 | bool_Bool mode_changed = false0; /* if true do a full mode set */ |
| 536 | bool_Bool fb_changed = false0; /* if true and !mode_changed just do a flip */ |
| 537 | struct drm_connector *connector; |
| 538 | struct drm_connector_list_iter conn_iter; |
| 539 | int count = 0, ro, fail = 0; |
| 540 | const struct drm_crtc_helper_funcs *crtc_funcs; |
| 541 | struct drm_mode_set save_set; |
| 542 | int ret; |
| 543 | int i; |
| 544 | |
| 545 | DRM_DEBUG_KMS("\n")___drm_dbg(((void *)0), DRM_UT_KMS, "\n"); |
| 546 | |
| 547 | BUG_ON(!set)((!(!set)) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c" , 547, "!(!set)")); |
| 548 | BUG_ON(!set->crtc)((!(!set->crtc)) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c" , 548, "!(!set->crtc)")); |
| 549 | BUG_ON(!set->crtc->helper_private)((!(!set->crtc->helper_private)) ? (void)0 : __assert("diagnostic " , "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c", 549, "!(!set->crtc->helper_private)" )); |
| 550 | |
| 551 | /* Enforce sane interface api - has been abused by the fb helper. */ |
| 552 | BUG_ON(!set->mode && set->fb)((!(!set->mode && set->fb)) ? (void)0 : __assert ("diagnostic ", "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c", 552, "!(!set->mode && set->fb)")); |
| 553 | BUG_ON(set->fb && set->num_connectors == 0)((!(set->fb && set->num_connectors == 0)) ? (void )0 : __assert("diagnostic ", "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c" , 553, "!(set->fb && set->num_connectors == 0)" )); |
| 554 | |
| 555 | crtc_funcs = set->crtc->helper_private; |
| 556 | |
| 557 | dev = set->crtc->dev; |
| 558 | WARN_ON(drm_drv_uses_atomic_modeset(dev))({ int __ret = !!(drm_drv_uses_atomic_modeset(dev)); if (__ret ) printf("WARNING %s failed at %s:%d\n", "drm_drv_uses_atomic_modeset(dev)" , "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c", 558); __builtin_expect (!!(__ret), 0); }); |
| 559 | |
| 560 | if (!set->mode) |
| 561 | set->fb = NULL((void *)0); |
| 562 | |
| 563 | if (set->fb) { |
| 564 | DRM_DEBUG_KMS("[CRTC:%d:%s] [FB:%d] #connectors=%d (x y) (%i %i)\n",___drm_dbg(((void *)0), DRM_UT_KMS, "[CRTC:%d:%s] [FB:%d] #connectors=%d (x y) (%i %i)\n" , set->crtc->base.id, set->crtc->name, set->fb ->base.id, (int)set->num_connectors, set->x, set-> y) |
| 565 | set->crtc->base.id, set->crtc->name,___drm_dbg(((void *)0), DRM_UT_KMS, "[CRTC:%d:%s] [FB:%d] #connectors=%d (x y) (%i %i)\n" , set->crtc->base.id, set->crtc->name, set->fb ->base.id, (int)set->num_connectors, set->x, set-> y) |
| 566 | set->fb->base.id,___drm_dbg(((void *)0), DRM_UT_KMS, "[CRTC:%d:%s] [FB:%d] #connectors=%d (x y) (%i %i)\n" , set->crtc->base.id, set->crtc->name, set->fb ->base.id, (int)set->num_connectors, set->x, set-> y) |
| 567 | (int)set->num_connectors, set->x, set->y)___drm_dbg(((void *)0), DRM_UT_KMS, "[CRTC:%d:%s] [FB:%d] #connectors=%d (x y) (%i %i)\n" , set->crtc->base.id, set->crtc->name, set->fb ->base.id, (int)set->num_connectors, set->x, set-> y); |
| 568 | } else { |
| 569 | DRM_DEBUG_KMS("[CRTC:%d:%s] [NOFB]\n",___drm_dbg(((void *)0), DRM_UT_KMS, "[CRTC:%d:%s] [NOFB]\n", set ->crtc->base.id, set->crtc->name) |
| 570 | set->crtc->base.id, set->crtc->name)___drm_dbg(((void *)0), DRM_UT_KMS, "[CRTC:%d:%s] [NOFB]\n", set ->crtc->base.id, set->crtc->name); |
| 571 | drm_crtc_helper_disable(set->crtc); |
| 572 | return 0; |
| 573 | } |
| 574 | |
| 575 | drm_warn_on_modeset_not_all_locked(dev); |
| 576 | |
| 577 | /* |
| 578 | * Allocate space for the backup of all (non-pointer) encoder and |
| 579 | * connector data. |
| 580 | */ |
| 581 | save_encoder_crtcs = kcalloc(dev->mode_config.num_encoder, |
| 582 | sizeof(struct drm_crtc *), GFP_KERNEL(0x0001 | 0x0004)); |
| 583 | if (!save_encoder_crtcs) |
| 584 | return -ENOMEM12; |
| 585 | |
| 586 | save_connector_encoders = kcalloc(dev->mode_config.num_connector, |
| 587 | sizeof(struct drm_encoder *), GFP_KERNEL(0x0001 | 0x0004)); |
| 588 | if (!save_connector_encoders) { |
| 589 | kfree(save_encoder_crtcs); |
| 590 | return -ENOMEM12; |
| 591 | } |
| 592 | |
| 593 | /* |
| 594 | * Copy data. Note that driver private data is not affected. |
| 595 | * Should anything bad happen only the expected state is |
| 596 | * restored, not the drivers personal bookkeeping. |
| 597 | */ |
| 598 | count = 0; |
| 599 | drm_for_each_encoder(encoder, dev)for (encoder = ({ const __typeof( ((__typeof(*encoder) *)0)-> head ) *__mptr = ((&(dev)->mode_config.encoder_list)-> next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );}); &encoder->head != (& (dev)->mode_config.encoder_list); encoder = ({ const __typeof ( ((__typeof(*encoder) *)0)->head ) *__mptr = (encoder-> head.next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );})) { |
| 600 | save_encoder_crtcs[count++] = encoder->crtc; |
| 601 | } |
| 602 | |
| 603 | count = 0; |
| 604 | drm_connector_list_iter_begin(dev, &conn_iter); |
| 605 | drm_for_each_connector_iter(connector, &conn_iter)while ((connector = drm_connector_list_iter_next(&conn_iter ))) |
| 606 | save_connector_encoders[count++] = connector->encoder; |
| 607 | drm_connector_list_iter_end(&conn_iter); |
| 608 | |
| 609 | save_set.crtc = set->crtc; |
| 610 | save_set.mode = &set->crtc->mode; |
| 611 | save_set.x = set->crtc->x; |
| 612 | save_set.y = set->crtc->y; |
| 613 | save_set.fb = set->crtc->primary->fb; |
| 614 | |
| 615 | /* We should be able to check here if the fb has the same properties |
| 616 | * and then just flip_or_move it */ |
| 617 | if (set->crtc->primary->fb != set->fb) { |
| 618 | /* If we have no fb then treat it as a full mode set */ |
| 619 | if (set->crtc->primary->fb == NULL((void *)0)) { |
| 620 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n")___drm_dbg(((void *)0), DRM_UT_KMS, "crtc has no fb, full mode set\n" ); |
| 621 | mode_changed = true1; |
| 622 | } else if (set->fb->format != set->crtc->primary->fb->format) { |
| 623 | mode_changed = true1; |
| 624 | } else |
| 625 | fb_changed = true1; |
| 626 | } |
| 627 | |
| 628 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
| 629 | fb_changed = true1; |
| 630 | |
| 631 | if (!drm_mode_equal(set->mode, &set->crtc->mode)) { |
| 632 | DRM_DEBUG_KMS("modes are different, full mode set\n")___drm_dbg(((void *)0), DRM_UT_KMS, "modes are different, full mode set\n" ); |
| 633 | drm_mode_debug_printmodeline(&set->crtc->mode); |
| 634 | drm_mode_debug_printmodeline(set->mode); |
| 635 | mode_changed = true1; |
| 636 | } |
| 637 | |
| 638 | /* take a reference on all unbound connectors in set, reuse the |
| 639 | * already taken reference for bound connectors |
| 640 | */ |
| 641 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 642 | if (set->connectors[ro]->encoder) |
| 643 | continue; |
| 644 | drm_connector_get(set->connectors[ro]); |
| 645 | } |
| 646 | |
| 647 | /* a) traverse passed in connector list and get encoders for them */ |
| 648 | count = 0; |
Value stored to 'count' is never read | |
| 649 | drm_connector_list_iter_begin(dev, &conn_iter); |
| 650 | drm_for_each_connector_iter(connector, &conn_iter)while ((connector = drm_connector_list_iter_next(&conn_iter ))) { |
| 651 | const struct drm_connector_helper_funcs *connector_funcs = |
| 652 | connector->helper_private; |
| 653 | new_encoder = connector->encoder; |
| 654 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 655 | if (set->connectors[ro] == connector) { |
| 656 | if (connector_funcs->best_encoder) |
| 657 | new_encoder = connector_funcs->best_encoder(connector); |
| 658 | else |
| 659 | new_encoder = drm_connector_get_single_encoder(connector); |
| 660 | |
| 661 | /* if we can't get an encoder for a connector |
| 662 | we are setting now - then fail */ |
| 663 | if (new_encoder == NULL((void *)0)) |
| 664 | /* don't break so fail path works correct */ |
| 665 | fail = 1; |
| 666 | |
| 667 | if (connector->dpms != DRM_MODE_DPMS_ON0) { |
| 668 | DRM_DEBUG_KMS("connector dpms not on, full mode switch\n")___drm_dbg(((void *)0), DRM_UT_KMS, "connector dpms not on, full mode switch\n" ); |
| 669 | mode_changed = true1; |
| 670 | } |
| 671 | |
| 672 | break; |
| 673 | } |
| 674 | } |
| 675 | |
| 676 | if (new_encoder != connector->encoder) { |
| 677 | DRM_DEBUG_KMS("encoder changed, full mode switch\n")___drm_dbg(((void *)0), DRM_UT_KMS, "encoder changed, full mode switch\n" ); |
| 678 | mode_changed = true1; |
| 679 | /* If the encoder is reused for another connector, then |
| 680 | * the appropriate crtc will be set later. |
| 681 | */ |
| 682 | if (connector->encoder) |
| 683 | connector->encoder->crtc = NULL((void *)0); |
| 684 | connector->encoder = new_encoder; |
| 685 | } |
| 686 | } |
| 687 | drm_connector_list_iter_end(&conn_iter); |
| 688 | |
| 689 | if (fail) { |
| 690 | ret = -EINVAL22; |
| 691 | goto fail; |
| 692 | } |
| 693 | |
| 694 | count = 0; |
| 695 | drm_connector_list_iter_begin(dev, &conn_iter); |
| 696 | drm_for_each_connector_iter(connector, &conn_iter)while ((connector = drm_connector_list_iter_next(&conn_iter ))) { |
| 697 | if (!connector->encoder) |
| 698 | continue; |
| 699 | |
| 700 | if (connector->encoder->crtc == set->crtc) |
| 701 | new_crtc = NULL((void *)0); |
| 702 | else |
| 703 | new_crtc = connector->encoder->crtc; |
| 704 | |
| 705 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 706 | if (set->connectors[ro] == connector) |
| 707 | new_crtc = set->crtc; |
| 708 | } |
| 709 | |
| 710 | /* Make sure the new CRTC will work with the encoder */ |
| 711 | if (new_crtc && |
| 712 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
| 713 | ret = -EINVAL22; |
| 714 | drm_connector_list_iter_end(&conn_iter); |
| 715 | goto fail; |
| 716 | } |
| 717 | if (new_crtc != connector->encoder->crtc) { |
| 718 | DRM_DEBUG_KMS("crtc changed, full mode switch\n")___drm_dbg(((void *)0), DRM_UT_KMS, "crtc changed, full mode switch\n" ); |
| 719 | mode_changed = true1; |
| 720 | connector->encoder->crtc = new_crtc; |
| 721 | } |
| 722 | if (new_crtc) { |
| 723 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d:%s]\n",___drm_dbg(((void *)0), DRM_UT_KMS, "[CONNECTOR:%d:%s] to [CRTC:%d:%s]\n" , connector->base.id, connector->name, new_crtc->base .id, new_crtc->name) |
| 724 | connector->base.id, connector->name,___drm_dbg(((void *)0), DRM_UT_KMS, "[CONNECTOR:%d:%s] to [CRTC:%d:%s]\n" , connector->base.id, connector->name, new_crtc->base .id, new_crtc->name) |
| 725 | new_crtc->base.id, new_crtc->name)___drm_dbg(((void *)0), DRM_UT_KMS, "[CONNECTOR:%d:%s] to [CRTC:%d:%s]\n" , connector->base.id, connector->name, new_crtc->base .id, new_crtc->name); |
| 726 | } else { |
| 727 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n",___drm_dbg(((void *)0), DRM_UT_KMS, "[CONNECTOR:%d:%s] to [NOCRTC]\n" , connector->base.id, connector->name) |
| 728 | connector->base.id, connector->name)___drm_dbg(((void *)0), DRM_UT_KMS, "[CONNECTOR:%d:%s] to [NOCRTC]\n" , connector->base.id, connector->name); |
| 729 | } |
| 730 | } |
| 731 | drm_connector_list_iter_end(&conn_iter); |
| 732 | |
| 733 | /* mode_set_base is not a required function */ |
| 734 | if (fb_changed && !crtc_funcs->mode_set_base) |
| 735 | mode_changed = true1; |
| 736 | |
| 737 | if (mode_changed) { |
| 738 | if (drm_helper_crtc_in_use(set->crtc)) { |
| 739 | DRM_DEBUG_KMS("attempting to set mode from"___drm_dbg(((void *)0), DRM_UT_KMS, "attempting to set mode from" " userspace\n") |
| 740 | " userspace\n")___drm_dbg(((void *)0), DRM_UT_KMS, "attempting to set mode from" " userspace\n"); |
| 741 | drm_mode_debug_printmodeline(set->mode); |
| 742 | set->crtc->primary->fb = set->fb; |
| 743 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
| 744 | set->x, set->y, |
| 745 | save_set.fb)) { |
| 746 | DRM_ERROR("failed to set mode on [CRTC:%d:%s]\n",__drm_err("failed to set mode on [CRTC:%d:%s]\n", set->crtc ->base.id, set->crtc->name) |
| 747 | set->crtc->base.id, set->crtc->name)__drm_err("failed to set mode on [CRTC:%d:%s]\n", set->crtc ->base.id, set->crtc->name); |
| 748 | set->crtc->primary->fb = save_set.fb; |
| 749 | ret = -EINVAL22; |
| 750 | goto fail; |
| 751 | } |
| 752 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n")___drm_dbg(((void *)0), DRM_UT_KMS, "Setting connector DPMS state to on\n" ); |
| 753 | for (i = 0; i < set->num_connectors; i++) { |
| 754 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id,___drm_dbg(((void *)0), DRM_UT_KMS, "\t[CONNECTOR:%d:%s] set DPMS on\n" , set->connectors[i]->base.id, set->connectors[i]-> name) |
| 755 | set->connectors[i]->name)___drm_dbg(((void *)0), DRM_UT_KMS, "\t[CONNECTOR:%d:%s] set DPMS on\n" , set->connectors[i]->base.id, set->connectors[i]-> name); |
| 756 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON0); |
| 757 | } |
| 758 | } |
| 759 | __drm_helper_disable_unused_functions(dev); |
| 760 | } else if (fb_changed) { |
| 761 | set->crtc->x = set->x; |
| 762 | set->crtc->y = set->y; |
| 763 | set->crtc->primary->fb = set->fb; |
| 764 | ret = crtc_funcs->mode_set_base(set->crtc, |
| 765 | set->x, set->y, save_set.fb); |
| 766 | if (ret != 0) { |
| 767 | set->crtc->x = save_set.x; |
| 768 | set->crtc->y = save_set.y; |
| 769 | set->crtc->primary->fb = save_set.fb; |
| 770 | goto fail; |
| 771 | } |
| 772 | } |
| 773 | |
| 774 | kfree(save_connector_encoders); |
| 775 | kfree(save_encoder_crtcs); |
| 776 | return 0; |
| 777 | |
| 778 | fail: |
| 779 | /* Restore all previous data. */ |
| 780 | count = 0; |
| 781 | drm_for_each_encoder(encoder, dev)for (encoder = ({ const __typeof( ((__typeof(*encoder) *)0)-> head ) *__mptr = ((&(dev)->mode_config.encoder_list)-> next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );}); &encoder->head != (& (dev)->mode_config.encoder_list); encoder = ({ const __typeof ( ((__typeof(*encoder) *)0)->head ) *__mptr = (encoder-> head.next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );})) { |
| 782 | encoder->crtc = save_encoder_crtcs[count++]; |
| 783 | } |
| 784 | |
| 785 | count = 0; |
| 786 | drm_connector_list_iter_begin(dev, &conn_iter); |
| 787 | drm_for_each_connector_iter(connector, &conn_iter)while ((connector = drm_connector_list_iter_next(&conn_iter ))) |
| 788 | connector->encoder = save_connector_encoders[count++]; |
| 789 | drm_connector_list_iter_end(&conn_iter); |
| 790 | |
| 791 | /* after fail drop reference on all unbound connectors in set, let |
| 792 | * bound connectors keep their reference |
| 793 | */ |
| 794 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 795 | if (set->connectors[ro]->encoder) |
| 796 | continue; |
| 797 | drm_connector_put(set->connectors[ro]); |
| 798 | } |
| 799 | |
| 800 | /* Try to restore the config */ |
| 801 | if (mode_changed && |
| 802 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, |
| 803 | save_set.y, save_set.fb)) |
| 804 | DRM_ERROR("failed to restore config after modeset failure\n")__drm_err("failed to restore config after modeset failure\n"); |
| 805 | |
| 806 | kfree(save_connector_encoders); |
| 807 | kfree(save_encoder_crtcs); |
| 808 | return ret; |
| 809 | } |
| 810 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
| 811 | |
| 812 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
| 813 | { |
| 814 | int dpms = DRM_MODE_DPMS_OFF3; |
| 815 | struct drm_connector *connector; |
| 816 | struct drm_connector_list_iter conn_iter; |
| 817 | struct drm_device *dev = encoder->dev; |
| 818 | |
| 819 | drm_connector_list_iter_begin(dev, &conn_iter); |
| 820 | drm_for_each_connector_iter(connector, &conn_iter)while ((connector = drm_connector_list_iter_next(&conn_iter ))) |
| 821 | if (connector->encoder == encoder) |
| 822 | if (connector->dpms < dpms) |
| 823 | dpms = connector->dpms; |
| 824 | drm_connector_list_iter_end(&conn_iter); |
| 825 | |
| 826 | return dpms; |
| 827 | } |
| 828 | |
| 829 | /* Helper which handles bridge ordering around encoder dpms */ |
| 830 | static void drm_helper_encoder_dpms(struct drm_encoder *encoder, int mode) |
| 831 | { |
| 832 | const struct drm_encoder_helper_funcs *encoder_funcs; |
| 833 | |
| 834 | encoder_funcs = encoder->helper_private; |
| 835 | if (!encoder_funcs) |
| 836 | return; |
| 837 | |
| 838 | if (encoder_funcs->dpms) |
| 839 | encoder_funcs->dpms(encoder, mode); |
| 840 | } |
| 841 | |
| 842 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
| 843 | { |
| 844 | int dpms = DRM_MODE_DPMS_OFF3; |
| 845 | struct drm_connector *connector; |
| 846 | struct drm_connector_list_iter conn_iter; |
| 847 | struct drm_device *dev = crtc->dev; |
| 848 | |
| 849 | drm_connector_list_iter_begin(dev, &conn_iter); |
| 850 | drm_for_each_connector_iter(connector, &conn_iter)while ((connector = drm_connector_list_iter_next(&conn_iter ))) |
| 851 | if (connector->encoder && connector->encoder->crtc == crtc) |
| 852 | if (connector->dpms < dpms) |
| 853 | dpms = connector->dpms; |
| 854 | drm_connector_list_iter_end(&conn_iter); |
| 855 | |
| 856 | return dpms; |
| 857 | } |
| 858 | |
| 859 | /** |
| 860 | * drm_helper_connector_dpms() - connector dpms helper implementation |
| 861 | * @connector: affected connector |
| 862 | * @mode: DPMS mode |
| 863 | * |
| 864 | * The drm_helper_connector_dpms() helper function implements the |
| 865 | * &drm_connector_funcs.dpms callback for drivers using the legacy CRTC |
| 866 | * helpers. |
| 867 | * |
| 868 | * This is the main helper function provided by the CRTC helper framework for |
| 869 | * implementing the DPMS connector attribute. It computes the new desired DPMS |
| 870 | * state for all encoders and CRTCs in the output mesh and calls the |
| 871 | * &drm_crtc_helper_funcs.dpms and &drm_encoder_helper_funcs.dpms callbacks |
| 872 | * provided by the driver. |
| 873 | * |
| 874 | * This function is deprecated. New drivers must implement atomic modeset |
| 875 | * support, where DPMS is handled in the DRM core. |
| 876 | * |
| 877 | * Returns: |
| 878 | * Always returns 0. |
| 879 | */ |
| 880 | int drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
| 881 | { |
| 882 | struct drm_encoder *encoder = connector->encoder; |
| 883 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL((void *)0); |
| 884 | int old_dpms, encoder_dpms = DRM_MODE_DPMS_OFF3; |
| 885 | |
| 886 | WARN_ON(drm_drv_uses_atomic_modeset(connector->dev))({ int __ret = !!(drm_drv_uses_atomic_modeset(connector->dev )); if (__ret) printf("WARNING %s failed at %s:%d\n", "drm_drv_uses_atomic_modeset(connector->dev)" , "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c", 886); __builtin_expect (!!(__ret), 0); }); |
| 887 | |
| 888 | if (mode == connector->dpms) |
| 889 | return 0; |
| 890 | |
| 891 | old_dpms = connector->dpms; |
| 892 | connector->dpms = mode; |
| 893 | |
| 894 | if (encoder) |
| 895 | encoder_dpms = drm_helper_choose_encoder_dpms(encoder); |
| 896 | |
| 897 | /* from off to on, do crtc then encoder */ |
| 898 | if (mode < old_dpms) { |
| 899 | if (crtc) { |
| 900 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 901 | |
| 902 | if (crtc_funcs->dpms) |
| 903 | (*crtc_funcs->dpms) (crtc, |
| 904 | drm_helper_choose_crtc_dpms(crtc)); |
| 905 | } |
| 906 | if (encoder) |
| 907 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
| 908 | } |
| 909 | |
| 910 | /* from on to off, do encoder then crtc */ |
| 911 | if (mode > old_dpms) { |
| 912 | if (encoder) |
| 913 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
| 914 | if (crtc) { |
| 915 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 916 | |
| 917 | if (crtc_funcs->dpms) |
| 918 | (*crtc_funcs->dpms) (crtc, |
| 919 | drm_helper_choose_crtc_dpms(crtc)); |
| 920 | } |
| 921 | } |
| 922 | |
| 923 | return 0; |
| 924 | } |
| 925 | EXPORT_SYMBOL(drm_helper_connector_dpms); |
| 926 | |
| 927 | /** |
| 928 | * drm_helper_resume_force_mode - force-restore mode setting configuration |
| 929 | * @dev: drm_device which should be restored |
| 930 | * |
| 931 | * Drivers which use the mode setting helpers can use this function to |
| 932 | * force-restore the mode setting configuration e.g. on resume or when something |
| 933 | * else might have trampled over the hw state (like some overzealous old BIOSen |
| 934 | * tended to do). |
| 935 | * |
| 936 | * This helper doesn't provide a error return value since restoring the old |
| 937 | * config should never fail due to resource allocation issues since the driver |
| 938 | * has successfully set the restored configuration already. Hence this should |
| 939 | * boil down to the equivalent of a few dpms on calls, which also don't provide |
| 940 | * an error code. |
| 941 | * |
| 942 | * Drivers where simply restoring an old configuration again might fail (e.g. |
| 943 | * due to slight differences in allocating shared resources when the |
| 944 | * configuration is restored in a different order than when userspace set it up) |
| 945 | * need to use their own restore logic. |
| 946 | * |
| 947 | * This function is deprecated. New drivers should implement atomic mode- |
| 948 | * setting and use the atomic suspend/resume helpers. |
| 949 | * |
| 950 | * See also: |
| 951 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() |
| 952 | */ |
| 953 | void drm_helper_resume_force_mode(struct drm_device *dev) |
| 954 | { |
| 955 | struct drm_crtc *crtc; |
| 956 | struct drm_encoder *encoder; |
| 957 | const struct drm_crtc_helper_funcs *crtc_funcs; |
| 958 | int encoder_dpms; |
| 959 | bool_Bool ret; |
| 960 | |
| 961 | WARN_ON(drm_drv_uses_atomic_modeset(dev))({ int __ret = !!(drm_drv_uses_atomic_modeset(dev)); if (__ret ) printf("WARNING %s failed at %s:%d\n", "drm_drv_uses_atomic_modeset(dev)" , "/usr/src/sys/dev/pci/drm/drm_crtc_helper.c", 961); __builtin_expect (!!(__ret), 0); }); |
| 962 | |
| 963 | drm_modeset_lock_all(dev); |
| 964 | drm_for_each_crtc(crtc, dev)for (crtc = ({ const __typeof( ((__typeof(*crtc) *)0)->head ) *__mptr = ((&(dev)->mode_config.crtc_list)->next ); (__typeof(*crtc) *)( (char *)__mptr - __builtin_offsetof(__typeof (*crtc), head) );}); &crtc->head != (&(dev)->mode_config .crtc_list); crtc = ({ const __typeof( ((__typeof(*crtc) *)0) ->head ) *__mptr = (crtc->head.next); (__typeof(*crtc) * )( (char *)__mptr - __builtin_offsetof(__typeof(*crtc), head) );})) { |
| 965 | |
| 966 | if (!crtc->enabled) |
| 967 | continue; |
| 968 | |
| 969 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
| 970 | crtc->x, crtc->y, crtc->primary->fb); |
| 971 | |
| 972 | /* Restoring the old config should never fail! */ |
| 973 | if (ret == false0) |
| 974 | DRM_ERROR("failed to set mode on crtc %p\n", crtc)__drm_err("failed to set mode on crtc %p\n", crtc); |
| 975 | |
| 976 | /* Turn off outputs that were already powered off */ |
| 977 | if (drm_helper_choose_crtc_dpms(crtc)) { |
| 978 | drm_for_each_encoder(encoder, dev)for (encoder = ({ const __typeof( ((__typeof(*encoder) *)0)-> head ) *__mptr = ((&(dev)->mode_config.encoder_list)-> next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );}); &encoder->head != (& (dev)->mode_config.encoder_list); encoder = ({ const __typeof ( ((__typeof(*encoder) *)0)->head ) *__mptr = (encoder-> head.next); (__typeof(*encoder) *)( (char *)__mptr - __builtin_offsetof (__typeof(*encoder), head) );})) { |
| 979 | |
| 980 | if(encoder->crtc != crtc) |
| 981 | continue; |
| 982 | |
| 983 | encoder_dpms = drm_helper_choose_encoder_dpms( |
| 984 | encoder); |
| 985 | |
| 986 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
| 987 | } |
| 988 | |
| 989 | crtc_funcs = crtc->helper_private; |
| 990 | if (crtc_funcs->dpms) |
| 991 | (*crtc_funcs->dpms) (crtc, |
| 992 | drm_helper_choose_crtc_dpms(crtc)); |
| 993 | } |
| 994 | } |
| 995 | |
| 996 | /* disable the unused connectors while restoring the modesetting */ |
| 997 | __drm_helper_disable_unused_functions(dev); |
| 998 | drm_modeset_unlock_all(dev); |
| 999 | } |
| 1000 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |
| 1001 | |
| 1002 | /** |
| 1003 | * drm_helper_force_disable_all - Forcibly turn off all enabled CRTCs |
| 1004 | * @dev: DRM device whose CRTCs to turn off |
| 1005 | * |
| 1006 | * Drivers may want to call this on unload to ensure that all displays are |
| 1007 | * unlit and the GPU is in a consistent, low power state. Takes modeset locks. |
| 1008 | * |
| 1009 | * Note: This should only be used by non-atomic legacy drivers. For an atomic |
| 1010 | * version look at drm_atomic_helper_shutdown(). |
| 1011 | * |
| 1012 | * Returns: |
| 1013 | * Zero on success, error code on failure. |
| 1014 | */ |
| 1015 | int drm_helper_force_disable_all(struct drm_device *dev) |
| 1016 | { |
| 1017 | struct drm_crtc *crtc; |
| 1018 | int ret = 0; |
| 1019 | |
| 1020 | drm_modeset_lock_all(dev); |
| 1021 | drm_for_each_crtc(crtc, dev)for (crtc = ({ const __typeof( ((__typeof(*crtc) *)0)->head ) *__mptr = ((&(dev)->mode_config.crtc_list)->next ); (__typeof(*crtc) *)( (char *)__mptr - __builtin_offsetof(__typeof (*crtc), head) );}); &crtc->head != (&(dev)->mode_config .crtc_list); crtc = ({ const __typeof( ((__typeof(*crtc) *)0) ->head ) *__mptr = (crtc->head.next); (__typeof(*crtc) * )( (char *)__mptr - __builtin_offsetof(__typeof(*crtc), head) );})) |
| 1022 | if (crtc->enabled) { |
| 1023 | struct drm_mode_set set = { |
| 1024 | .crtc = crtc, |
| 1025 | }; |
| 1026 | |
| 1027 | ret = drm_mode_set_config_internal(&set); |
| 1028 | if (ret) |
| 1029 | goto out; |
| 1030 | } |
| 1031 | out: |
| 1032 | drm_modeset_unlock_all(dev); |
| 1033 | return ret; |
| 1034 | } |
| 1035 | EXPORT_SYMBOL(drm_helper_force_disable_all); |