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_MODE_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 WARN_ON(to_intel_plane_state(state)->vma); 106 107 drm_atomic_helper_plane_destroy_state(plane, state); 108 } 109 110 int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_state, 111 struct intel_crtc_state *crtc_state, 112 const struct intel_plane_state *old_plane_state, 113 struct intel_plane_state *intel_state) 114 { 115 struct drm_plane *plane = intel_state->base.plane; 116 struct drm_i915_private *dev_priv = to_i915(plane->dev); 117 struct drm_plane_state *state = &intel_state->base; 118 struct intel_plane *intel_plane = to_intel_plane(plane); 119 const struct drm_display_mode *adjusted_mode = 120 &crtc_state->base.adjusted_mode; 121 int ret; 122 123 /* 124 * Both crtc and plane->crtc could be NULL if we're updating a 125 * property while the plane is disabled. We don't actually have 126 * anything driver-specific we need to test in that case, so 127 * just return success. 128 */ 129 if (!intel_state->base.crtc && !old_plane_state->base.crtc) 130 return 0; 131 132 /* Clip all planes to CRTC size, or 0x0 if CRTC is disabled */ 133 intel_state->clip.x1 = 0; 134 intel_state->clip.y1 = 0; 135 intel_state->clip.x2 = 136 crtc_state->base.enable ? crtc_state->pipe_src_w : 0; 137 intel_state->clip.y2 = 138 crtc_state->base.enable ? crtc_state->pipe_src_h : 0; 139 140 if (state->fb && drm_rotation_90_or_270(state->rotation)) { 141 struct drm_format_name_buf format_name; 142 143 if (state->fb->modifier != I915_FORMAT_MOD_Y_TILED && 144 state->fb->modifier != I915_FORMAT_MOD_Yf_TILED) { 145 DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n"); 146 return -EINVAL; 147 } 148 149 /* 150 * 90/270 is not allowed with RGB64 16:16:16:16, 151 * RGB 16-bit 5:6:5, and Indexed 8-bit. 152 * TBD: Add RGB64 case once its added in supported format list. 153 */ 154 switch (state->fb->format->format) { 155 case DRM_FORMAT_C8: 156 case DRM_FORMAT_RGB565: 157 DRM_DEBUG_KMS("Unsupported pixel format %s for 90/270!\n", 158 drm_get_format_name(state->fb->format->format, 159 &format_name)); 160 return -EINVAL; 161 162 default: 163 break; 164 } 165 } 166 167 /* CHV ignores the mirror bit when the rotate bit is set :( */ 168 if (IS_CHERRYVIEW(dev_priv) && 169 state->rotation & DRM_MODE_ROTATE_180 && 170 state->rotation & DRM_MODE_REFLECT_X) { 171 DRM_DEBUG_KMS("Cannot rotate and reflect at the same time\n"); 172 return -EINVAL; 173 } 174 175 intel_state->base.visible = false; 176 ret = intel_plane->check_plane(intel_plane, crtc_state, intel_state); 177 if (ret) 178 return ret; 179 180 /* 181 * Y-tiling is not supported in IF-ID Interlace mode in 182 * GEN9 and above. 183 */ 184 if (state->fb && INTEL_GEN(dev_priv) >= 9 && crtc_state->base.enable && 185 adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) { 186 if (state->fb->modifier == I915_FORMAT_MOD_Y_TILED || 187 state->fb->modifier == I915_FORMAT_MOD_Yf_TILED) { 188 DRM_DEBUG_KMS("Y/Yf tiling not supported in IF-ID mode\n"); 189 return -EINVAL; 190 } 191 } 192 193 /* FIXME pre-g4x don't work like this */ 194 if (intel_state->base.visible) 195 crtc_state->active_planes |= BIT(intel_plane->id); 196 else 197 crtc_state->active_planes &= ~BIT(intel_plane->id); 198 199 return intel_plane_atomic_calc_changes(old_crtc_state, 200 &crtc_state->base, 201 old_plane_state, 202 state); 203 } 204 205 static int intel_plane_atomic_check(struct drm_plane *plane, 206 struct drm_plane_state *new_plane_state) 207 { 208 struct drm_atomic_state *state = new_plane_state->state; 209 const struct drm_plane_state *old_plane_state = 210 drm_atomic_get_old_plane_state(state, plane); 211 struct drm_crtc *crtc = new_plane_state->crtc ?: old_plane_state->crtc; 212 const struct drm_crtc_state *old_crtc_state; 213 struct drm_crtc_state *new_crtc_state; 214 215 /* 216 * Both crtc and plane->crtc could be NULL if we're updating a 217 * property while the plane is disabled. We don't actually have 218 * anything driver-specific we need to test in that case, so 219 * just return success. 220 */ 221 if (!crtc) 222 return 0; 223 224 old_crtc_state = drm_atomic_get_old_crtc_state(state, crtc); 225 new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc); 226 227 return intel_plane_atomic_check_with_state(to_intel_crtc_state(old_crtc_state), 228 to_intel_crtc_state(new_crtc_state), 229 to_intel_plane_state(old_plane_state), 230 to_intel_plane_state(new_plane_state)); 231 } 232 233 static void intel_plane_atomic_update(struct drm_plane *plane, 234 struct drm_plane_state *old_state) 235 { 236 struct intel_atomic_state *state = to_intel_atomic_state(old_state->state); 237 struct intel_plane *intel_plane = to_intel_plane(plane); 238 const struct intel_plane_state *new_plane_state = 239 intel_atomic_get_new_plane_state(state, intel_plane); 240 struct drm_crtc *crtc = new_plane_state->base.crtc ?: old_state->crtc; 241 242 if (new_plane_state->base.visible) { 243 const struct intel_crtc_state *new_crtc_state = 244 intel_atomic_get_new_crtc_state(state, to_intel_crtc(crtc)); 245 246 trace_intel_update_plane(plane, 247 to_intel_crtc(crtc)); 248 249 intel_plane->update_plane(intel_plane, 250 new_crtc_state, new_plane_state); 251 } else { 252 trace_intel_disable_plane(plane, 253 to_intel_crtc(crtc)); 254 255 intel_plane->disable_plane(intel_plane, to_intel_crtc(crtc)); 256 } 257 } 258 259 const struct drm_plane_helper_funcs intel_plane_helper_funcs = { 260 .prepare_fb = intel_prepare_plane_fb, 261 .cleanup_fb = intel_cleanup_plane_fb, 262 .atomic_check = intel_plane_atomic_check, 263 .atomic_update = intel_plane_atomic_update, 264 }; 265 266 /** 267 * intel_plane_atomic_get_property - fetch plane property value 268 * @plane: plane to fetch property for 269 * @state: state containing the property value 270 * @property: property to look up 271 * @val: pointer to write property value into 272 * 273 * The DRM core does not store shadow copies of properties for 274 * atomic-capable drivers. This entrypoint is used to fetch 275 * the current value of a driver-specific plane property. 276 */ 277 int 278 intel_plane_atomic_get_property(struct drm_plane *plane, 279 const struct drm_plane_state *state, 280 struct drm_property *property, 281 uint64_t *val) 282 { 283 DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name); 284 return -EINVAL; 285 } 286 287 /** 288 * intel_plane_atomic_set_property - set plane property value 289 * @plane: plane to set property for 290 * @state: state to update property value in 291 * @property: property to set 292 * @val: value to set property to 293 * 294 * Writes the specified property value for a plane into the provided atomic 295 * state object. 296 * 297 * Returns 0 on success, -EINVAL on unrecognized properties 298 */ 299 int 300 intel_plane_atomic_set_property(struct drm_plane *plane, 301 struct drm_plane_state *state, 302 struct drm_property *property, 303 uint64_t val) 304 { 305 DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name); 306 return -EINVAL; 307 } 308