drivers/gpu/drm/i915/intel_atomic_plane.c

   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 }