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