1 /* 2 * Copyright © 2014 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 plane helpers 26 * 27 * The functions here are used by the atomic plane helper functions to 28 * implement legacy plane updates (i.e., drm_plane->update_plane() and 29 * drm_plane->disable_plane()). This allows plane updates to use the 30 * atomic state infrastructure and perform plane updates as separate 31 * prepare/check/commit/cleanup steps. 32 */ 33 34 #include <drm/drmP.h> 35 #include <drm/drm_atomic_helper.h> 36 #include <drm/drm_plane_helper.h> 37 #include "intel_drv.h" 38 39 /** 40 * intel_create_plane_state - create plane state object 41 * @plane: drm plane 42 * 43 * Allocates a fresh plane state for the given plane and sets some of 44 * the state values to sensible initial values. 45 * 46 * Returns: A newly allocated plane state, or NULL on failure 47 */ 48 struct intel_plane_state * 49 intel_create_plane_state(struct drm_plane *plane) 50 { 51 struct intel_plane_state *state; 52 53 state = kzalloc(sizeof(*state), GFP_KERNEL); 54 if (!state) 55 return NULL; 56 57 state->base.plane = plane; 58 state->base.rotation = DRM_ROTATE_0; 59 state->ckey.flags = I915_SET_COLORKEY_NONE; 60 61 return state; 62 } 63 64 /** 65 * intel_plane_duplicate_state - duplicate plane state 66 * @plane: drm plane 67 * 68 * Allocates and returns a copy of the plane state (both common and 69 * Intel-specific) for the specified plane. 70 * 71 * Returns: The newly allocated plane state, or NULL on failure. 72 */ 73 struct drm_plane_state * 74 intel_plane_duplicate_state(struct drm_plane *plane) 75 { 76 struct drm_plane_state *state; 77 struct intel_plane_state *intel_state; 78 79 intel_state = kmemdup(plane->state, sizeof(*intel_state), GFP_KERNEL); 80 81 if (!intel_state) 82 return NULL; 83 84 state = &intel_state->base; 85 86 __drm_atomic_helper_plane_duplicate_state(plane, state); 87 88 intel_state->vma = NULL; 89 90 return state; 91 } 92 93 /** 94 * intel_plane_destroy_state - destroy plane state 95 * @plane: drm plane 96 * @state: state object to destroy 97 * 98 * Destroys the plane state (both common and Intel-specific) for the 99 * specified plane. 100 */ 101 void 102 intel_plane_destroy_state(struct drm_plane *plane, 103 struct drm_plane_state *state) 104 { 105 struct i915_vma *vma; 106 107 vma = fetch_and_zero(&to_intel_plane_state(state)->vma); 108 109 /* 110 * FIXME: Normally intel_cleanup_plane_fb handles destruction of vma. 111 * We currently don't clear all planes during driver unload, so we have 112 * to be able to unpin vma here for now. 113 * 114 * Normally this can only happen during unload when kmscon is disabled 115 * and userspace doesn't attempt to set a framebuffer at all. 116 */ 117 if (vma) { 118 mutex_lock(&plane->dev->struct_mutex); 119 intel_unpin_fb_vma(vma); 120 mutex_unlock(&plane->dev->struct_mutex); 121 } 122 123 drm_atomic_helper_plane_destroy_state(plane, state); 124 } 125 126 int intel_plane_atomic_check_with_state(struct intel_crtc_state *crtc_state, 127 struct intel_plane_state *intel_state) 128 { 129 struct drm_plane *plane = intel_state->base.plane; 130 struct drm_i915_private *dev_priv = to_i915(plane->dev); 131 struct drm_plane_state *state = &intel_state->base; 132 struct intel_plane *intel_plane = to_intel_plane(plane); 133 int ret; 134 135 /* 136 * Both crtc and plane->crtc could be NULL if we're updating a 137 * property while the plane is disabled. We don't actually have 138 * anything driver-specific we need to test in that case, so 139 * just return success. 140 */ 141 if (!intel_state->base.crtc && !plane->state->crtc) 142 return 0; 143 144 /* Clip all planes to CRTC size, or 0x0 if CRTC is disabled */ 145 intel_state->clip.x1 = 0; 146 intel_state->clip.y1 = 0; 147 intel_state->clip.x2 = 148 crtc_state->base.enable ? crtc_state->pipe_src_w : 0; 149 intel_state->clip.y2 = 150 crtc_state->base.enable ? crtc_state->pipe_src_h : 0; 151 152 if (state->fb && drm_rotation_90_or_270(state->rotation)) { 153 struct drm_format_name_buf format_name; 154 155 if (state->fb->modifier != I915_FORMAT_MOD_Y_TILED && 156 state->fb->modifier != I915_FORMAT_MOD_Yf_TILED) { 157 DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n"); 158 return -EINVAL; 159 } 160 161 /* 162 * 90/270 is not allowed with RGB64 16:16:16:16, 163 * RGB 16-bit 5:6:5, and Indexed 8-bit. 164 * TBD: Add RGB64 case once its added in supported format list. 165 */ 166 switch (state->fb->format->format) { 167 case DRM_FORMAT_C8: 168 case DRM_FORMAT_RGB565: 169 DRM_DEBUG_KMS("Unsupported pixel format %s for 90/270!\n", 170 drm_get_format_name(state->fb->format->format, 171 &format_name)); 172 return -EINVAL; 173 174 default: 175 break; 176 } 177 } 178 179 /* CHV ignores the mirror bit when the rotate bit is set :( */ 180 if (IS_CHERRYVIEW(dev_priv) && 181 state->rotation & DRM_ROTATE_180 && 182 state->rotation & DRM_REFLECT_X) { 183 DRM_DEBUG_KMS("Cannot rotate and reflect at the same time\n"); 184 return -EINVAL; 185 } 186 187 intel_state->base.visible = false; 188 ret = intel_plane->check_plane(plane, crtc_state, intel_state); 189 if (ret) 190 return ret; 191 192 /* FIXME pre-g4x don't work like this */ 193 if (intel_state->base.visible) 194 crtc_state->active_planes |= BIT(intel_plane->id); 195 else 196 crtc_state->active_planes &= ~BIT(intel_plane->id); 197 198 return intel_plane_atomic_calc_changes(&crtc_state->base, state); 199 } 200 201 static int intel_plane_atomic_check(struct drm_plane *plane, 202 struct drm_plane_state *state) 203 { 204 struct drm_crtc *crtc = state->crtc; 205 struct drm_crtc_state *drm_crtc_state; 206 207 crtc = crtc ? crtc : plane->state->crtc; 208 209 /* 210 * Both crtc and plane->crtc could be NULL if we're updating a 211 * property while the plane is disabled. We don't actually have 212 * anything driver-specific we need to test in that case, so 213 * just return success. 214 */ 215 if (!crtc) 216 return 0; 217 218 drm_crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc); 219 if (WARN_ON(!drm_crtc_state)) 220 return -EINVAL; 221 222 return intel_plane_atomic_check_with_state(to_intel_crtc_state(drm_crtc_state), 223 to_intel_plane_state(state)); 224 } 225 226 static void intel_plane_atomic_update(struct drm_plane *plane, 227 struct drm_plane_state *old_state) 228 { 229 struct intel_plane *intel_plane = to_intel_plane(plane); 230 struct intel_plane_state *intel_state = 231 to_intel_plane_state(plane->state); 232 struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc; 233 234 if (intel_state->base.visible) { 235 trace_intel_update_plane(plane, 236 to_intel_crtc(crtc)); 237 238 intel_plane->update_plane(plane, 239 to_intel_crtc_state(crtc->state), 240 intel_state); 241 } else { 242 trace_intel_disable_plane(plane, 243 to_intel_crtc(crtc)); 244 245 intel_plane->disable_plane(plane, crtc); 246 } 247 } 248 249 const struct drm_plane_helper_funcs intel_plane_helper_funcs = { 250 .prepare_fb = intel_prepare_plane_fb, 251 .cleanup_fb = intel_cleanup_plane_fb, 252 .atomic_check = intel_plane_atomic_check, 253 .atomic_update = intel_plane_atomic_update, 254 }; 255 256 /** 257 * intel_plane_atomic_get_property - fetch plane property value 258 * @plane: plane to fetch property for 259 * @state: state containing the property value 260 * @property: property to look up 261 * @val: pointer to write property value into 262 * 263 * The DRM core does not store shadow copies of properties for 264 * atomic-capable drivers. This entrypoint is used to fetch 265 * the current value of a driver-specific plane property. 266 */ 267 int 268 intel_plane_atomic_get_property(struct drm_plane *plane, 269 const struct drm_plane_state *state, 270 struct drm_property *property, 271 uint64_t *val) 272 { 273 DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name); 274 return -EINVAL; 275 } 276 277 /** 278 * intel_plane_atomic_set_property - set plane property value 279 * @plane: plane to set property for 280 * @state: state to update property value in 281 * @property: property to set 282 * @val: value to set property to 283 * 284 * Writes the specified property value for a plane into the provided atomic 285 * state object. 286 * 287 * Returns 0 on success, -EINVAL on unrecognized properties 288 */ 289 int 290 intel_plane_atomic_set_property(struct drm_plane *plane, 291 struct drm_plane_state *state, 292 struct drm_property *property, 293 uint64_t val) 294 { 295 DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name); 296 return -EINVAL; 297 } 298