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