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