1 /* 2 * Copyright © 2015 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21 * DEALINGS IN THE SOFTWARE. 22 */ 23 24 /** 25 * DOC: atomic modeset support 26 * 27 * The functions here implement the state management and hardware programming 28 * dispatch required by the atomic modeset infrastructure. 29 * See intel_atomic_plane.c for the plane-specific atomic functionality. 30 */ 31 32 #include <drm/drm_atomic.h> 33 #include <drm/drm_atomic_helper.h> 34 #include <drm/drm_fourcc.h> 35 36 #include "i915_drv.h" 37 #include "i915_reg.h" 38 #include "intel_atomic.h" 39 #include "intel_cdclk.h" 40 #include "intel_display_types.h" 41 #include "intel_global_state.h" 42 #include "intel_hdcp.h" 43 #include "intel_psr.h" 44 #include "intel_fb.h" 45 #include "skl_universal_plane.h" 46 47 /** 48 * intel_digital_connector_atomic_get_property - hook for connector->atomic_get_property. 49 * @connector: Connector to get the property for. 50 * @state: Connector state to retrieve the property from. 51 * @property: Property to retrieve. 52 * @val: Return value for the property. 53 * 54 * Returns the atomic property value for a digital connector. 55 */ 56 int intel_digital_connector_atomic_get_property(struct drm_connector *connector, 57 const struct drm_connector_state *state, 58 struct drm_property *property, 59 u64 *val) 60 { 61 struct drm_device *dev = connector->dev; 62 struct drm_i915_private *dev_priv = to_i915(dev); 63 struct intel_digital_connector_state *intel_conn_state = 64 to_intel_digital_connector_state(state); 65 66 if (property == dev_priv->display.properties.force_audio) 67 *val = intel_conn_state->force_audio; 68 else if (property == dev_priv->display.properties.broadcast_rgb) 69 *val = intel_conn_state->broadcast_rgb; 70 else { 71 drm_dbg_atomic(&dev_priv->drm, 72 "Unknown property [PROP:%d:%s]\n", 73 property->base.id, property->name); 74 return -EINVAL; 75 } 76 77 return 0; 78 } 79 80 /** 81 * intel_digital_connector_atomic_set_property - hook for connector->atomic_set_property. 82 * @connector: Connector to set the property for. 83 * @state: Connector state to set the property on. 84 * @property: Property to set. 85 * @val: New value for the property. 86 * 87 * Sets the atomic property value for a digital connector. 88 */ 89 int intel_digital_connector_atomic_set_property(struct drm_connector *connector, 90 struct drm_connector_state *state, 91 struct drm_property *property, 92 u64 val) 93 { 94 struct drm_device *dev = connector->dev; 95 struct drm_i915_private *dev_priv = to_i915(dev); 96 struct intel_digital_connector_state *intel_conn_state = 97 to_intel_digital_connector_state(state); 98 99 if (property == dev_priv->display.properties.force_audio) { 100 intel_conn_state->force_audio = val; 101 return 0; 102 } 103 104 if (property == dev_priv->display.properties.broadcast_rgb) { 105 intel_conn_state->broadcast_rgb = val; 106 return 0; 107 } 108 109 drm_dbg_atomic(&dev_priv->drm, "Unknown property [PROP:%d:%s]\n", 110 property->base.id, property->name); 111 return -EINVAL; 112 } 113 114 int intel_digital_connector_atomic_check(struct drm_connector *conn, 115 struct drm_atomic_state *state) 116 { 117 struct drm_connector_state *new_state = 118 drm_atomic_get_new_connector_state(state, conn); 119 struct intel_digital_connector_state *new_conn_state = 120 to_intel_digital_connector_state(new_state); 121 struct drm_connector_state *old_state = 122 drm_atomic_get_old_connector_state(state, conn); 123 struct intel_digital_connector_state *old_conn_state = 124 to_intel_digital_connector_state(old_state); 125 struct drm_crtc_state *crtc_state; 126 127 intel_hdcp_atomic_check(conn, old_state, new_state); 128 129 if (!new_state->crtc) 130 return 0; 131 132 crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc); 133 134 /* 135 * These properties are handled by fastset, and might not end 136 * up in a modeset. 137 */ 138 if (new_conn_state->force_audio != old_conn_state->force_audio || 139 new_conn_state->broadcast_rgb != old_conn_state->broadcast_rgb || 140 new_conn_state->base.colorspace != old_conn_state->base.colorspace || 141 new_conn_state->base.picture_aspect_ratio != old_conn_state->base.picture_aspect_ratio || 142 new_conn_state->base.content_type != old_conn_state->base.content_type || 143 new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode || 144 new_conn_state->base.privacy_screen_sw_state != old_conn_state->base.privacy_screen_sw_state || 145 !drm_connector_atomic_hdr_metadata_equal(old_state, new_state)) 146 crtc_state->mode_changed = true; 147 148 return 0; 149 } 150 151 /** 152 * intel_digital_connector_duplicate_state - duplicate connector state 153 * @connector: digital connector 154 * 155 * Allocates and returns a copy of the connector state (both common and 156 * digital connector specific) for the specified connector. 157 * 158 * Returns: The newly allocated connector state, or NULL on failure. 159 */ 160 struct drm_connector_state * 161 intel_digital_connector_duplicate_state(struct drm_connector *connector) 162 { 163 struct intel_digital_connector_state *state; 164 165 state = kmemdup(connector->state, sizeof(*state), GFP_KERNEL); 166 if (!state) 167 return NULL; 168 169 __drm_atomic_helper_connector_duplicate_state(connector, &state->base); 170 return &state->base; 171 } 172 173 /** 174 * intel_connector_needs_modeset - check if connector needs a modeset 175 * @state: the atomic state corresponding to this modeset 176 * @connector: the connector 177 */ 178 bool 179 intel_connector_needs_modeset(struct intel_atomic_state *state, 180 struct drm_connector *connector) 181 { 182 const struct drm_connector_state *old_conn_state, *new_conn_state; 183 184 old_conn_state = drm_atomic_get_old_connector_state(&state->base, connector); 185 new_conn_state = drm_atomic_get_new_connector_state(&state->base, connector); 186 187 return old_conn_state->crtc != new_conn_state->crtc || 188 (new_conn_state->crtc && 189 drm_atomic_crtc_needs_modeset(drm_atomic_get_new_crtc_state(&state->base, 190 new_conn_state->crtc))); 191 } 192 193 /** 194 * intel_any_crtc_needs_modeset - check if any CRTC needs a modeset 195 * @state: the atomic state corresponding to this modeset 196 * 197 * Returns true if any CRTC in @state needs a modeset. 198 */ 199 bool intel_any_crtc_needs_modeset(struct intel_atomic_state *state) 200 { 201 struct intel_crtc *crtc; 202 struct intel_crtc_state *crtc_state; 203 int i; 204 205 for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) { 206 if (intel_crtc_needs_modeset(crtc_state)) 207 return true; 208 } 209 210 return false; 211 } 212 213 struct intel_digital_connector_state * 214 intel_atomic_get_digital_connector_state(struct intel_atomic_state *state, 215 struct intel_connector *connector) 216 { 217 struct drm_connector_state *conn_state; 218 219 conn_state = drm_atomic_get_connector_state(&state->base, 220 &connector->base); 221 if (IS_ERR(conn_state)) 222 return ERR_CAST(conn_state); 223 224 return to_intel_digital_connector_state(conn_state); 225 } 226 227 /** 228 * intel_crtc_duplicate_state - duplicate crtc state 229 * @crtc: drm crtc 230 * 231 * Allocates and returns a copy of the crtc state (both common and 232 * Intel-specific) for the specified crtc. 233 * 234 * Returns: The newly allocated crtc state, or NULL on failure. 235 */ 236 struct drm_crtc_state * 237 intel_crtc_duplicate_state(struct drm_crtc *crtc) 238 { 239 const struct intel_crtc_state *old_crtc_state = to_intel_crtc_state(crtc->state); 240 struct intel_crtc_state *crtc_state; 241 242 crtc_state = kmemdup(old_crtc_state, sizeof(*crtc_state), GFP_KERNEL); 243 if (!crtc_state) 244 return NULL; 245 246 __drm_atomic_helper_crtc_duplicate_state(crtc, &crtc_state->uapi); 247 248 /* copy color blobs */ 249 if (crtc_state->hw.degamma_lut) 250 drm_property_blob_get(crtc_state->hw.degamma_lut); 251 if (crtc_state->hw.ctm) 252 drm_property_blob_get(crtc_state->hw.ctm); 253 if (crtc_state->hw.gamma_lut) 254 drm_property_blob_get(crtc_state->hw.gamma_lut); 255 256 if (crtc_state->pre_csc_lut) 257 drm_property_blob_get(crtc_state->pre_csc_lut); 258 if (crtc_state->post_csc_lut) 259 drm_property_blob_get(crtc_state->post_csc_lut); 260 261 crtc_state->update_pipe = false; 262 crtc_state->disable_lp_wm = false; 263 crtc_state->disable_cxsr = false; 264 crtc_state->update_wm_pre = false; 265 crtc_state->update_wm_post = false; 266 crtc_state->fifo_changed = false; 267 crtc_state->preload_luts = false; 268 crtc_state->wm.need_postvbl_update = false; 269 crtc_state->do_async_flip = false; 270 crtc_state->fb_bits = 0; 271 crtc_state->update_planes = 0; 272 crtc_state->dsb = NULL; 273 274 return &crtc_state->uapi; 275 } 276 277 static void intel_crtc_put_color_blobs(struct intel_crtc_state *crtc_state) 278 { 279 drm_property_blob_put(crtc_state->hw.degamma_lut); 280 drm_property_blob_put(crtc_state->hw.gamma_lut); 281 drm_property_blob_put(crtc_state->hw.ctm); 282 283 drm_property_blob_put(crtc_state->pre_csc_lut); 284 drm_property_blob_put(crtc_state->post_csc_lut); 285 } 286 287 void intel_crtc_free_hw_state(struct intel_crtc_state *crtc_state) 288 { 289 intel_crtc_put_color_blobs(crtc_state); 290 } 291 292 /** 293 * intel_crtc_destroy_state - destroy crtc state 294 * @crtc: drm crtc 295 * @state: the state to destroy 296 * 297 * Destroys the crtc state (both common and Intel-specific) for the 298 * specified crtc. 299 */ 300 void 301 intel_crtc_destroy_state(struct drm_crtc *crtc, 302 struct drm_crtc_state *state) 303 { 304 struct intel_crtc_state *crtc_state = to_intel_crtc_state(state); 305 306 drm_WARN_ON(crtc->dev, crtc_state->dsb); 307 308 __drm_atomic_helper_crtc_destroy_state(&crtc_state->uapi); 309 intel_crtc_free_hw_state(crtc_state); 310 kfree(crtc_state); 311 } 312 313 struct drm_atomic_state * 314 intel_atomic_state_alloc(struct drm_device *dev) 315 { 316 struct intel_atomic_state *state = kzalloc(sizeof(*state), GFP_KERNEL); 317 318 if (!state || drm_atomic_state_init(dev, &state->base) < 0) { 319 kfree(state); 320 return NULL; 321 } 322 323 return &state->base; 324 } 325 326 void intel_atomic_state_free(struct drm_atomic_state *_state) 327 { 328 struct intel_atomic_state *state = to_intel_atomic_state(_state); 329 330 drm_atomic_state_default_release(&state->base); 331 kfree(state->global_objs); 332 333 i915_sw_fence_fini(&state->commit_ready); 334 335 kfree(state); 336 } 337 338 void intel_atomic_state_clear(struct drm_atomic_state *s) 339 { 340 struct intel_atomic_state *state = to_intel_atomic_state(s); 341 342 drm_atomic_state_default_clear(&state->base); 343 intel_atomic_clear_global_state(state); 344 345 /* state->internal not reset on purpose */ 346 347 state->dpll_set = state->modeset = false; 348 } 349 350 struct intel_crtc_state * 351 intel_atomic_get_crtc_state(struct drm_atomic_state *state, 352 struct intel_crtc *crtc) 353 { 354 struct drm_crtc_state *crtc_state; 355 crtc_state = drm_atomic_get_crtc_state(state, &crtc->base); 356 if (IS_ERR(crtc_state)) 357 return ERR_CAST(crtc_state); 358 359 return to_intel_crtc_state(crtc_state); 360 } 361