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
  60         return state;
  61 }
  62
  63 /**
  64  * intel_plane_duplicate_state - duplicate plane state
  65  * @plane: drm plane
  66  *
  67  * Allocates and returns a copy of the plane state (both common and
  68  * Intel-specific) for the specified plane.
  69  *
  70  * Returns: The newly allocated plane state, or NULL on failure.
  71  */
  72 struct drm_plane_state *
  73 intel_plane_duplicate_state(struct drm_plane *plane)
  74 {
  75         struct drm_plane_state *state;
  76         struct intel_plane_state *intel_state;
  77
  78         intel_state = kmemdup(plane->state, sizeof(*intel_state), GFP_KERNEL);
  79
  80         if (!intel_state)
  81                 return NULL;
  82
  83         state = &intel_state->base;
  84
  85         __drm_atomic_helper_plane_duplicate_state(plane, state);
  86
  87         intel_state->vma = NULL;
  88         intel_state->flags = 0;
  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         if (!intel_state->base.crtc && !old_plane_state->base.crtc)
 124                 return 0;
 125
 126         if (state->fb && drm_rotation_90_or_270(state->rotation)) {
 127                 struct drm_format_name_buf format_name;
 128
 129                 if (state->fb->modifier != I915_FORMAT_MOD_Y_TILED &&
 130                     state->fb->modifier != I915_FORMAT_MOD_Yf_TILED) {
 131                         DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n");
 132                         return -EINVAL;
 133                 }
 134
 135                 /*
 136                  * 90/270 is not allowed with RGB64 16:16:16:16,
 137                  * RGB 16-bit 5:6:5, and Indexed 8-bit.
 138                  * TBD: Add RGB64 case once its added in supported format list.
 139                  */
 140                 switch (state->fb->format->format) {
 141                 case DRM_FORMAT_C8:
 142                 case DRM_FORMAT_RGB565:
 143                         DRM_DEBUG_KMS("Unsupported pixel format %s for 90/270!\n",
 144                                       drm_get_format_name(state->fb->format->format,
 145                                                           &format_name));
 146                         return -EINVAL;
 147
 148                 default:
 149                         break;
 150                 }
 151         }
 152
 153         /* CHV ignores the mirror bit when the rotate bit is set :( */
 154         if (IS_CHERRYVIEW(dev_priv) &&
 155             state->rotation & DRM_MODE_ROTATE_180 &&
 156             state->rotation & DRM_MODE_REFLECT_X) {
 157                 DRM_DEBUG_KMS("Cannot rotate and reflect at the same time\n");
 158                 return -EINVAL;
 159         }
 160
 161         intel_state->base.visible = false;
 162         ret = intel_plane->check_plane(intel_plane, crtc_state, intel_state);
 163         if (ret)
 164                 return ret;
 165
 166         /*
 167          * Y-tiling is not supported in IF-ID Interlace mode in
 168          * GEN9 and above.
 169          */
 170         if (state->fb && INTEL_GEN(dev_priv) >= 9 && crtc_state->base.enable &&
 171             adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
 172                 if (state->fb->modifier == I915_FORMAT_MOD_Y_TILED ||
 173                     state->fb->modifier == I915_FORMAT_MOD_Yf_TILED) {
 174                         DRM_DEBUG_KMS("Y/Yf tiling not supported in IF-ID mode\n");
 175                         return -EINVAL;
 176                 }
 177         }
 178
 179         /* FIXME pre-g4x don't work like this */
 180         if (state->visible)
 181                 crtc_state->active_planes |= BIT(intel_plane->id);
 182         else
 183                 crtc_state->active_planes &= ~BIT(intel_plane->id);
 184
 185         if (state->visible && state->fb->format->format == DRM_FORMAT_NV12)
 186                 crtc_state->nv12_planes |= BIT(intel_plane->id);
 187         else
 188                 crtc_state->nv12_planes &= ~BIT(intel_plane->id);
 189
 190         return intel_plane_atomic_calc_changes(old_crtc_state,
 191                                                &crtc_state->base,
 192                                                old_plane_state,
 193                                                state);
 194 }
 195
 196 static int intel_plane_atomic_check(struct drm_plane *plane,
 197                                     struct drm_plane_state *new_plane_state)
 198 {
 199         struct drm_atomic_state *state = new_plane_state->state;
 200         const struct drm_plane_state *old_plane_state =
 201                 drm_atomic_get_old_plane_state(state, plane);
 202         struct drm_crtc *crtc = new_plane_state->crtc ?: old_plane_state->crtc;
 203         const struct drm_crtc_state *old_crtc_state;
 204         struct drm_crtc_state *new_crtc_state;
 205
 206         if (!crtc)
 207                 return 0;
 208
 209         old_crtc_state = drm_atomic_get_old_crtc_state(state, crtc);
 210         new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
 211
 212         return intel_plane_atomic_check_with_state(to_intel_crtc_state(old_crtc_state),
 213                                                    to_intel_crtc_state(new_crtc_state),
 214                                                    to_intel_plane_state(old_plane_state),
 215                                                    to_intel_plane_state(new_plane_state));
 216 }
 217
 218 static void intel_plane_atomic_update(struct drm_plane *plane,
 219                                       struct drm_plane_state *old_state)
 220 {
 221         struct intel_atomic_state *state = to_intel_atomic_state(old_state->state);
 222         struct intel_plane *intel_plane = to_intel_plane(plane);
 223         const struct intel_plane_state *new_plane_state =
 224                 intel_atomic_get_new_plane_state(state, intel_plane);
 225         struct drm_crtc *crtc = new_plane_state->base.crtc ?: old_state->crtc;
 226
 227         if (new_plane_state->base.visible) {
 228                 const struct intel_crtc_state *new_crtc_state =
 229                         intel_atomic_get_new_crtc_state(state, to_intel_crtc(crtc));
 230
 231                 trace_intel_update_plane(plane,
 232                                          to_intel_crtc(crtc));
 233
 234                 intel_plane->update_plane(intel_plane,
 235                                           new_crtc_state, new_plane_state);
 236         } else {
 237                 trace_intel_disable_plane(plane,
 238                                           to_intel_crtc(crtc));
 239
 240                 intel_plane->disable_plane(intel_plane, to_intel_crtc(crtc));
 241         }
 242 }
 243
 244 const struct drm_plane_helper_funcs intel_plane_helper_funcs = {
 245         .prepare_fb = intel_prepare_plane_fb,
 246         .cleanup_fb = intel_cleanup_plane_fb,
 247         .atomic_check = intel_plane_atomic_check,
 248         .atomic_update = intel_plane_atomic_update,
 249 };
 250
 251 /**
 252  * intel_plane_atomic_get_property - fetch plane property value
 253  * @plane: plane to fetch property for
 254  * @state: state containing the property value
 255  * @property: property to look up
 256  * @val: pointer to write property value into
 257  *
 258  * The DRM core does not store shadow copies of properties for
 259  * atomic-capable drivers.  This entrypoint is used to fetch
 260  * the current value of a driver-specific plane property.
 261  */
 262 int
 263 intel_plane_atomic_get_property(struct drm_plane *plane,
 264                                 const struct drm_plane_state *state,
 265                                 struct drm_property *property,
 266                                 uint64_t *val)
 267 {
 268         DRM_DEBUG_KMS("Unknown property [PROP:%d:%s]\n",
 269                       property->base.id, property->name);
 270         return -EINVAL;
 271 }
 272
 273 /**
 274  * intel_plane_atomic_set_property - set plane property value
 275  * @plane: plane to set property for
 276  * @state: state to update property value in
 277  * @property: property to set
 278  * @val: value to set property to
 279  *
 280  * Writes the specified property value for a plane into the provided atomic
 281  * state object.
 282  *
 283  * Returns 0 on success, -EINVAL on unrecognized properties
 284  */
 285 int
 286 intel_plane_atomic_set_property(struct drm_plane *plane,
 287                                 struct drm_plane_state *state,
 288                                 struct drm_property *property,
 289                                 uint64_t val)
 290 {
 291         DRM_DEBUG_KMS("Unknown property [PROP:%d:%s]\n",
 292                       property->base.id, property->name);
 293         return -EINVAL;
 294 }