1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * (C) COPYRIGHT 2018 ARM Limited. All rights reserved. 4 * Author: James.Qian.Wang <james.qian.wang@arm.com> 5 * 6 */ 7 #include <drm/drm_atomic.h> 8 #include <drm/drm_atomic_helper.h> 9 #include <drm/drm_plane_helper.h> 10 #include <drm/drm_print.h> 11 #include "komeda_dev.h" 12 #include "komeda_kms.h" 13 #include "komeda_framebuffer.h" 14 15 static int 16 komeda_plane_init_data_flow(struct drm_plane_state *st, 17 struct komeda_crtc_state *kcrtc_st, 18 struct komeda_data_flow_cfg *dflow) 19 { 20 struct komeda_plane *kplane = to_kplane(st->plane); 21 struct drm_framebuffer *fb = st->fb; 22 const struct komeda_format_caps *caps = to_kfb(fb)->format_caps; 23 struct komeda_pipeline *pipe = kplane->layer->base.pipeline; 24 25 memset(dflow, 0, sizeof(*dflow)); 26 27 dflow->blending_zorder = st->normalized_zpos; 28 if (pipe == to_kcrtc(st->crtc)->master) 29 dflow->blending_zorder -= kcrtc_st->max_slave_zorder; 30 if (dflow->blending_zorder < 0) { 31 DRM_DEBUG_ATOMIC("%s zorder:%d < max_slave_zorder: %d.\n", 32 st->plane->name, st->normalized_zpos, 33 kcrtc_st->max_slave_zorder); 34 return -EINVAL; 35 } 36 37 dflow->pixel_blend_mode = st->pixel_blend_mode; 38 dflow->layer_alpha = st->alpha >> 8; 39 40 dflow->out_x = st->crtc_x; 41 dflow->out_y = st->crtc_y; 42 dflow->out_w = st->crtc_w; 43 dflow->out_h = st->crtc_h; 44 45 dflow->in_x = st->src_x >> 16; 46 dflow->in_y = st->src_y >> 16; 47 dflow->in_w = st->src_w >> 16; 48 dflow->in_h = st->src_h >> 16; 49 50 dflow->rot = drm_rotation_simplify(st->rotation, caps->supported_rots); 51 if (!has_bits(dflow->rot, caps->supported_rots)) { 52 DRM_DEBUG_ATOMIC("rotation(0x%x) isn't supported by %s.\n", 53 dflow->rot, 54 komeda_get_format_name(caps->fourcc, 55 fb->modifier)); 56 return -EINVAL; 57 } 58 59 komeda_complete_data_flow_cfg(kplane->layer, dflow, fb); 60 61 return 0; 62 } 63 64 /** 65 * komeda_plane_atomic_check - build input data flow 66 * @plane: DRM plane 67 * @state: the plane state object 68 * 69 * RETURNS: 70 * Zero for success or -errno 71 */ 72 static int 73 komeda_plane_atomic_check(struct drm_plane *plane, 74 struct drm_plane_state *state) 75 { 76 struct komeda_plane *kplane = to_kplane(plane); 77 struct komeda_plane_state *kplane_st = to_kplane_st(state); 78 struct komeda_layer *layer = kplane->layer; 79 struct drm_crtc_state *crtc_st; 80 struct komeda_crtc_state *kcrtc_st; 81 struct komeda_data_flow_cfg dflow; 82 int err; 83 84 if (!state->crtc || !state->fb) 85 return 0; 86 87 crtc_st = drm_atomic_get_crtc_state(state->state, state->crtc); 88 if (IS_ERR(crtc_st) || !crtc_st->enable) { 89 DRM_DEBUG_ATOMIC("Cannot update plane on a disabled CRTC.\n"); 90 return -EINVAL; 91 } 92 93 /* crtc is inactive, skip the resource assignment */ 94 if (!crtc_st->active) 95 return 0; 96 97 kcrtc_st = to_kcrtc_st(crtc_st); 98 99 err = komeda_plane_init_data_flow(state, kcrtc_st, &dflow); 100 if (err) 101 return err; 102 103 if (dflow.en_split) 104 err = komeda_build_layer_split_data_flow(layer, 105 kplane_st, kcrtc_st, &dflow); 106 else 107 err = komeda_build_layer_data_flow(layer, 108 kplane_st, kcrtc_st, &dflow); 109 110 return err; 111 } 112 113 /* plane doesn't represent a real HW, so there is no HW update for plane. 114 * komeda handles all the HW update in crtc->atomic_flush 115 */ 116 static void 117 komeda_plane_atomic_update(struct drm_plane *plane, 118 struct drm_plane_state *old_state) 119 { 120 } 121 122 static const struct drm_plane_helper_funcs komeda_plane_helper_funcs = { 123 .atomic_check = komeda_plane_atomic_check, 124 .atomic_update = komeda_plane_atomic_update, 125 }; 126 127 static void komeda_plane_destroy(struct drm_plane *plane) 128 { 129 drm_plane_cleanup(plane); 130 131 kfree(to_kplane(plane)); 132 } 133 134 static void komeda_plane_reset(struct drm_plane *plane) 135 { 136 struct komeda_plane_state *state; 137 struct komeda_plane *kplane = to_kplane(plane); 138 139 if (plane->state) 140 __drm_atomic_helper_plane_destroy_state(plane->state); 141 142 kfree(plane->state); 143 plane->state = NULL; 144 145 state = kzalloc(sizeof(*state), GFP_KERNEL); 146 if (state) { 147 state->base.rotation = DRM_MODE_ROTATE_0; 148 state->base.pixel_blend_mode = DRM_MODE_BLEND_PREMULTI; 149 state->base.alpha = DRM_BLEND_ALPHA_OPAQUE; 150 state->base.zpos = kplane->layer->base.id; 151 state->base.color_encoding = DRM_COLOR_YCBCR_BT601; 152 state->base.color_range = DRM_COLOR_YCBCR_LIMITED_RANGE; 153 plane->state = &state->base; 154 plane->state->plane = plane; 155 } 156 } 157 158 static struct drm_plane_state * 159 komeda_plane_atomic_duplicate_state(struct drm_plane *plane) 160 { 161 struct komeda_plane_state *new; 162 163 if (WARN_ON(!plane->state)) 164 return NULL; 165 166 new = kzalloc(sizeof(*new), GFP_KERNEL); 167 if (!new) 168 return NULL; 169 170 __drm_atomic_helper_plane_duplicate_state(plane, &new->base); 171 172 return &new->base; 173 } 174 175 static void 176 komeda_plane_atomic_destroy_state(struct drm_plane *plane, 177 struct drm_plane_state *state) 178 { 179 __drm_atomic_helper_plane_destroy_state(state); 180 kfree(to_kplane_st(state)); 181 } 182 183 static bool 184 komeda_plane_format_mod_supported(struct drm_plane *plane, 185 u32 format, u64 modifier) 186 { 187 struct komeda_dev *mdev = plane->dev->dev_private; 188 struct komeda_plane *kplane = to_kplane(plane); 189 u32 layer_type = kplane->layer->layer_type; 190 191 return komeda_format_mod_supported(&mdev->fmt_tbl, layer_type, 192 format, modifier, 0); 193 } 194 195 static const struct drm_plane_funcs komeda_plane_funcs = { 196 .update_plane = drm_atomic_helper_update_plane, 197 .disable_plane = drm_atomic_helper_disable_plane, 198 .destroy = komeda_plane_destroy, 199 .reset = komeda_plane_reset, 200 .atomic_duplicate_state = komeda_plane_atomic_duplicate_state, 201 .atomic_destroy_state = komeda_plane_atomic_destroy_state, 202 .format_mod_supported = komeda_plane_format_mod_supported, 203 }; 204 205 /* for komeda, which is pipeline can be share between crtcs */ 206 static u32 get_possible_crtcs(struct komeda_kms_dev *kms, 207 struct komeda_pipeline *pipe) 208 { 209 struct komeda_crtc *crtc; 210 u32 possible_crtcs = 0; 211 int i; 212 213 for (i = 0; i < kms->n_crtcs; i++) { 214 crtc = &kms->crtcs[i]; 215 216 if ((pipe == crtc->master) || (pipe == crtc->slave)) 217 possible_crtcs |= BIT(i); 218 } 219 220 return possible_crtcs; 221 } 222 223 static void 224 komeda_set_crtc_plane_mask(struct komeda_kms_dev *kms, 225 struct komeda_pipeline *pipe, 226 struct drm_plane *plane) 227 { 228 struct komeda_crtc *kcrtc; 229 int i; 230 231 for (i = 0; i < kms->n_crtcs; i++) { 232 kcrtc = &kms->crtcs[i]; 233 234 if (pipe == kcrtc->slave) 235 kcrtc->slave_planes |= BIT(drm_plane_index(plane)); 236 } 237 } 238 239 /* use Layer0 as primary */ 240 static u32 get_plane_type(struct komeda_kms_dev *kms, 241 struct komeda_component *c) 242 { 243 bool is_primary = (c->id == KOMEDA_COMPONENT_LAYER0); 244 245 return is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY; 246 } 247 248 static int komeda_plane_add(struct komeda_kms_dev *kms, 249 struct komeda_layer *layer) 250 { 251 struct komeda_dev *mdev = kms->base.dev_private; 252 struct komeda_component *c = &layer->base; 253 struct komeda_plane *kplane; 254 struct drm_plane *plane; 255 u32 *formats, n_formats = 0; 256 int err; 257 258 kplane = kzalloc(sizeof(*kplane), GFP_KERNEL); 259 if (!kplane) 260 return -ENOMEM; 261 262 plane = &kplane->base; 263 kplane->layer = layer; 264 265 formats = komeda_get_layer_fourcc_list(&mdev->fmt_tbl, 266 layer->layer_type, &n_formats); 267 268 err = drm_universal_plane_init(&kms->base, plane, 269 get_possible_crtcs(kms, c->pipeline), 270 &komeda_plane_funcs, 271 formats, n_formats, komeda_supported_modifiers, 272 get_plane_type(kms, c), 273 "%s", c->name); 274 275 komeda_put_fourcc_list(formats); 276 277 if (err) 278 goto cleanup; 279 280 drm_plane_helper_add(plane, &komeda_plane_helper_funcs); 281 282 err = drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0, 283 layer->supported_rots); 284 if (err) 285 goto cleanup; 286 287 err = drm_plane_create_alpha_property(plane); 288 if (err) 289 goto cleanup; 290 291 err = drm_plane_create_blend_mode_property(plane, 292 BIT(DRM_MODE_BLEND_PIXEL_NONE) | 293 BIT(DRM_MODE_BLEND_PREMULTI) | 294 BIT(DRM_MODE_BLEND_COVERAGE)); 295 if (err) 296 goto cleanup; 297 298 err = drm_plane_create_color_properties(plane, 299 BIT(DRM_COLOR_YCBCR_BT601) | 300 BIT(DRM_COLOR_YCBCR_BT709) | 301 BIT(DRM_COLOR_YCBCR_BT2020), 302 BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) | 303 BIT(DRM_COLOR_YCBCR_FULL_RANGE), 304 DRM_COLOR_YCBCR_BT601, 305 DRM_COLOR_YCBCR_LIMITED_RANGE); 306 if (err) 307 goto cleanup; 308 309 err = drm_plane_create_zpos_property(plane, layer->base.id, 0, 8); 310 if (err) 311 goto cleanup; 312 313 komeda_set_crtc_plane_mask(kms, c->pipeline, plane); 314 315 return 0; 316 cleanup: 317 komeda_plane_destroy(plane); 318 return err; 319 } 320 321 int komeda_kms_add_planes(struct komeda_kms_dev *kms, struct komeda_dev *mdev) 322 { 323 struct komeda_pipeline *pipe; 324 int i, j, err; 325 326 for (i = 0; i < mdev->n_pipelines; i++) { 327 pipe = mdev->pipelines[i]; 328 329 for (j = 0; j < pipe->n_layers; j++) { 330 err = komeda_plane_add(kms, pipe->layers[j]); 331 if (err) 332 return err; 333 } 334 } 335 336 return 0; 337 } 338