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 = BIT(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 if (WARN_ON(!plane->state)) 80 intel_state = intel_create_plane_state(plane); 81 else 82 intel_state = kmemdup(plane->state, sizeof(*intel_state), 83 GFP_KERNEL); 84 85 if (!intel_state) 86 return NULL; 87 88 state = &intel_state->base; 89 90 __drm_atomic_helper_plane_duplicate_state(plane, state); 91 92 return state; 93 } 94 95 /** 96 * intel_plane_destroy_state - destroy plane state 97 * @plane: drm plane 98 * @state: state object to destroy 99 * 100 * Destroys the plane state (both common and Intel-specific) for the 101 * specified plane. 102 */ 103 void 104 intel_plane_destroy_state(struct drm_plane *plane, 105 struct drm_plane_state *state) 106 { 107 drm_atomic_helper_plane_destroy_state(plane, state); 108 } 109 110 static int intel_plane_atomic_check(struct drm_plane *plane, 111 struct drm_plane_state *state) 112 { 113 struct drm_crtc *crtc = state->crtc; 114 struct intel_crtc *intel_crtc; 115 struct intel_crtc_state *crtc_state; 116 struct intel_plane *intel_plane = to_intel_plane(plane); 117 struct intel_plane_state *intel_state = to_intel_plane_state(state); 118 struct drm_crtc_state *drm_crtc_state; 119 int ret; 120 121 crtc = crtc ? crtc : plane->state->crtc; 122 intel_crtc = to_intel_crtc(crtc); 123 124 /* 125 * Both crtc and plane->crtc could be NULL if we're updating a 126 * property while the plane is disabled. We don't actually have 127 * anything driver-specific we need to test in that case, so 128 * just return success. 129 */ 130 if (!crtc) 131 return 0; 132 133 drm_crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc); 134 if (WARN_ON(!drm_crtc_state)) 135 return -EINVAL; 136 137 crtc_state = to_intel_crtc_state(drm_crtc_state); 138 139 /* 140 * The original src/dest coordinates are stored in state->base, but 141 * we want to keep another copy internal to our driver that we can 142 * clip/modify ourselves. 143 */ 144 intel_state->src.x1 = state->src_x; 145 intel_state->src.y1 = state->src_y; 146 intel_state->src.x2 = state->src_x + state->src_w; 147 intel_state->src.y2 = state->src_y + state->src_h; 148 intel_state->dst.x1 = state->crtc_x; 149 intel_state->dst.y1 = state->crtc_y; 150 intel_state->dst.x2 = state->crtc_x + state->crtc_w; 151 intel_state->dst.y2 = state->crtc_y + state->crtc_h; 152 153 /* Clip all planes to CRTC size, or 0x0 if CRTC is disabled */ 154 intel_state->clip.x1 = 0; 155 intel_state->clip.y1 = 0; 156 intel_state->clip.x2 = 157 crtc_state->base.active ? crtc_state->pipe_src_w : 0; 158 intel_state->clip.y2 = 159 crtc_state->base.active ? crtc_state->pipe_src_h : 0; 160 161 if (state->fb && intel_rotation_90_or_270(state->rotation)) { 162 if (!(state->fb->modifier[0] == I915_FORMAT_MOD_Y_TILED || 163 state->fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED)) { 164 DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n"); 165 return -EINVAL; 166 } 167 168 /* 169 * 90/270 is not allowed with RGB64 16:16:16:16, 170 * RGB 16-bit 5:6:5, and Indexed 8-bit. 171 * TBD: Add RGB64 case once its added in supported format list. 172 */ 173 switch (state->fb->pixel_format) { 174 case DRM_FORMAT_C8: 175 case DRM_FORMAT_RGB565: 176 DRM_DEBUG_KMS("Unsupported pixel format %s for 90/270!\n", 177 drm_get_format_name(state->fb->pixel_format)); 178 return -EINVAL; 179 180 default: 181 break; 182 } 183 } 184 185 intel_state->visible = false; 186 ret = intel_plane->check_plane(plane, crtc_state, intel_state); 187 if (ret) 188 return ret; 189 190 return intel_plane_atomic_calc_changes(&crtc_state->base, state); 191 } 192 193 static void intel_plane_atomic_update(struct drm_plane *plane, 194 struct drm_plane_state *old_state) 195 { 196 struct intel_plane *intel_plane = to_intel_plane(plane); 197 struct intel_plane_state *intel_state = 198 to_intel_plane_state(plane->state); 199 200 intel_plane->commit_plane(plane, intel_state); 201 } 202 203 const struct drm_plane_helper_funcs intel_plane_helper_funcs = { 204 .prepare_fb = intel_prepare_plane_fb, 205 .cleanup_fb = intel_cleanup_plane_fb, 206 .atomic_check = intel_plane_atomic_check, 207 .atomic_update = intel_plane_atomic_update, 208 }; 209 210 /** 211 * intel_plane_atomic_get_property - fetch plane property value 212 * @plane: plane to fetch property for 213 * @state: state containing the property value 214 * @property: property to look up 215 * @val: pointer to write property value into 216 * 217 * The DRM core does not store shadow copies of properties for 218 * atomic-capable drivers. This entrypoint is used to fetch 219 * the current value of a driver-specific plane property. 220 */ 221 int 222 intel_plane_atomic_get_property(struct drm_plane *plane, 223 const struct drm_plane_state *state, 224 struct drm_property *property, 225 uint64_t *val) 226 { 227 DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name); 228 return -EINVAL; 229 } 230 231 /** 232 * intel_plane_atomic_set_property - set plane property value 233 * @plane: plane to set property for 234 * @state: state to update property value in 235 * @property: property to set 236 * @val: value to set property to 237 * 238 * Writes the specified property value for a plane into the provided atomic 239 * state object. 240 * 241 * Returns 0 on success, -EINVAL on unrecognized properties 242 */ 243 int 244 intel_plane_atomic_set_property(struct drm_plane *plane, 245 struct drm_plane_state *state, 246 struct drm_property *property, 247 uint64_t val) 248 { 249 DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name); 250 return -EINVAL; 251 } 252