1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) Icenowy Zheng <icenowy@aosc.io> 4 * 5 * Based on sun4i_layer.h, which is: 6 * Copyright (C) 2015 Free Electrons 7 * Copyright (C) 2015 NextThing Co 8 * 9 * Maxime Ripard <maxime.ripard@free-electrons.com> 10 */ 11 12 #include <drm/drm_atomic.h> 13 #include <drm/drm_atomic_helper.h> 14 #include <drm/drm_crtc.h> 15 #include <drm/drm_fb_cma_helper.h> 16 #include <drm/drm_fourcc.h> 17 #include <drm/drm_gem_cma_helper.h> 18 #include <drm/drm_gem_framebuffer_helper.h> 19 #include <drm/drm_plane_helper.h> 20 #include <drm/drm_probe_helper.h> 21 22 #include "sun8i_mixer.h" 23 #include "sun8i_ui_layer.h" 24 #include "sun8i_ui_scaler.h" 25 26 static void sun8i_ui_layer_enable(struct sun8i_mixer *mixer, int channel, 27 int overlay, bool enable, unsigned int zpos, 28 unsigned int old_zpos) 29 { 30 u32 val, bld_base, ch_base; 31 32 bld_base = sun8i_blender_base(mixer); 33 ch_base = sun8i_channel_base(mixer, channel); 34 35 DRM_DEBUG_DRIVER("%sabling channel %d overlay %d\n", 36 enable ? "En" : "Dis", channel, overlay); 37 38 if (enable) 39 val = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_EN; 40 else 41 val = 0; 42 43 regmap_update_bits(mixer->engine.regs, 44 SUN8I_MIXER_CHAN_UI_LAYER_ATTR(ch_base, overlay), 45 SUN8I_MIXER_CHAN_UI_LAYER_ATTR_EN, val); 46 47 if (!enable || zpos != old_zpos) { 48 regmap_update_bits(mixer->engine.regs, 49 SUN8I_MIXER_BLEND_PIPE_CTL(bld_base), 50 SUN8I_MIXER_BLEND_PIPE_CTL_EN(old_zpos), 51 0); 52 53 regmap_update_bits(mixer->engine.regs, 54 SUN8I_MIXER_BLEND_ROUTE(bld_base), 55 SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(old_zpos), 56 0); 57 } 58 59 if (enable) { 60 val = SUN8I_MIXER_BLEND_PIPE_CTL_EN(zpos); 61 62 regmap_update_bits(mixer->engine.regs, 63 SUN8I_MIXER_BLEND_PIPE_CTL(bld_base), 64 val, val); 65 66 val = channel << SUN8I_MIXER_BLEND_ROUTE_PIPE_SHIFT(zpos); 67 68 regmap_update_bits(mixer->engine.regs, 69 SUN8I_MIXER_BLEND_ROUTE(bld_base), 70 SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(zpos), 71 val); 72 } 73 } 74 75 static int sun8i_ui_layer_update_coord(struct sun8i_mixer *mixer, int channel, 76 int overlay, struct drm_plane *plane, 77 unsigned int zpos) 78 { 79 struct drm_plane_state *state = plane->state; 80 u32 src_w, src_h, dst_w, dst_h; 81 u32 bld_base, ch_base; 82 u32 outsize, insize; 83 u32 hphase, vphase; 84 85 DRM_DEBUG_DRIVER("Updating UI channel %d overlay %d\n", 86 channel, overlay); 87 88 bld_base = sun8i_blender_base(mixer); 89 ch_base = sun8i_channel_base(mixer, channel); 90 91 src_w = drm_rect_width(&state->src) >> 16; 92 src_h = drm_rect_height(&state->src) >> 16; 93 dst_w = drm_rect_width(&state->dst); 94 dst_h = drm_rect_height(&state->dst); 95 96 hphase = state->src.x1 & 0xffff; 97 vphase = state->src.y1 & 0xffff; 98 99 insize = SUN8I_MIXER_SIZE(src_w, src_h); 100 outsize = SUN8I_MIXER_SIZE(dst_w, dst_h); 101 102 if (plane->type == DRM_PLANE_TYPE_PRIMARY) { 103 bool interlaced = false; 104 u32 val; 105 106 DRM_DEBUG_DRIVER("Primary layer, updating global size W: %u H: %u\n", 107 dst_w, dst_h); 108 regmap_write(mixer->engine.regs, 109 SUN8I_MIXER_GLOBAL_SIZE, 110 outsize); 111 regmap_write(mixer->engine.regs, 112 SUN8I_MIXER_BLEND_OUTSIZE(bld_base), outsize); 113 114 if (state->crtc) 115 interlaced = state->crtc->state->adjusted_mode.flags 116 & DRM_MODE_FLAG_INTERLACE; 117 118 if (interlaced) 119 val = SUN8I_MIXER_BLEND_OUTCTL_INTERLACED; 120 else 121 val = 0; 122 123 regmap_update_bits(mixer->engine.regs, 124 SUN8I_MIXER_BLEND_OUTCTL(bld_base), 125 SUN8I_MIXER_BLEND_OUTCTL_INTERLACED, 126 val); 127 128 DRM_DEBUG_DRIVER("Switching display mixer interlaced mode %s\n", 129 interlaced ? "on" : "off"); 130 } 131 132 /* Set height and width */ 133 DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n", 134 state->src.x1 >> 16, state->src.y1 >> 16); 135 DRM_DEBUG_DRIVER("Layer source size W: %d H: %d\n", src_w, src_h); 136 regmap_write(mixer->engine.regs, 137 SUN8I_MIXER_CHAN_UI_LAYER_SIZE(ch_base, overlay), 138 insize); 139 regmap_write(mixer->engine.regs, 140 SUN8I_MIXER_CHAN_UI_OVL_SIZE(ch_base), 141 insize); 142 143 if (insize != outsize || hphase || vphase) { 144 u32 hscale, vscale; 145 146 DRM_DEBUG_DRIVER("HW scaling is enabled\n"); 147 148 hscale = state->src_w / state->crtc_w; 149 vscale = state->src_h / state->crtc_h; 150 151 sun8i_ui_scaler_setup(mixer, channel, src_w, src_h, dst_w, 152 dst_h, hscale, vscale, hphase, vphase); 153 sun8i_ui_scaler_enable(mixer, channel, true); 154 } else { 155 DRM_DEBUG_DRIVER("HW scaling is not needed\n"); 156 sun8i_ui_scaler_enable(mixer, channel, false); 157 } 158 159 /* Set base coordinates */ 160 DRM_DEBUG_DRIVER("Layer destination coordinates X: %d Y: %d\n", 161 state->dst.x1, state->dst.y1); 162 DRM_DEBUG_DRIVER("Layer destination size W: %d H: %d\n", dst_w, dst_h); 163 regmap_write(mixer->engine.regs, 164 SUN8I_MIXER_BLEND_ATTR_COORD(bld_base, zpos), 165 SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1)); 166 regmap_write(mixer->engine.regs, 167 SUN8I_MIXER_BLEND_ATTR_INSIZE(bld_base, zpos), 168 outsize); 169 170 return 0; 171 } 172 173 static int sun8i_ui_layer_update_formats(struct sun8i_mixer *mixer, int channel, 174 int overlay, struct drm_plane *plane) 175 { 176 struct drm_plane_state *state = plane->state; 177 const struct drm_format_info *fmt; 178 u32 val, ch_base, hw_fmt; 179 int ret; 180 181 ch_base = sun8i_channel_base(mixer, channel); 182 183 fmt = state->fb->format; 184 ret = sun8i_mixer_drm_format_to_hw(fmt->format, &hw_fmt); 185 if (ret || fmt->is_yuv) { 186 DRM_DEBUG_DRIVER("Invalid format\n"); 187 return -EINVAL; 188 } 189 190 val = hw_fmt << SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_OFFSET; 191 regmap_update_bits(mixer->engine.regs, 192 SUN8I_MIXER_CHAN_UI_LAYER_ATTR(ch_base, overlay), 193 SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_MASK, val); 194 195 return 0; 196 } 197 198 static int sun8i_ui_layer_update_buffer(struct sun8i_mixer *mixer, int channel, 199 int overlay, struct drm_plane *plane) 200 { 201 struct drm_plane_state *state = plane->state; 202 struct drm_framebuffer *fb = state->fb; 203 struct drm_gem_cma_object *gem; 204 dma_addr_t paddr; 205 u32 ch_base; 206 int bpp; 207 208 ch_base = sun8i_channel_base(mixer, channel); 209 210 /* Get the physical address of the buffer in memory */ 211 gem = drm_fb_cma_get_gem_obj(fb, 0); 212 213 DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->paddr); 214 215 /* Compute the start of the displayed memory */ 216 bpp = fb->format->cpp[0]; 217 paddr = gem->paddr + fb->offsets[0]; 218 219 /* Fixup framebuffer address for src coordinates */ 220 paddr += (state->src.x1 >> 16) * bpp; 221 paddr += (state->src.y1 >> 16) * fb->pitches[0]; 222 223 /* Set the line width */ 224 DRM_DEBUG_DRIVER("Layer line width: %d bytes\n", fb->pitches[0]); 225 regmap_write(mixer->engine.regs, 226 SUN8I_MIXER_CHAN_UI_LAYER_PITCH(ch_base, overlay), 227 fb->pitches[0]); 228 229 DRM_DEBUG_DRIVER("Setting buffer address to %pad\n", &paddr); 230 231 regmap_write(mixer->engine.regs, 232 SUN8I_MIXER_CHAN_UI_LAYER_TOP_LADDR(ch_base, overlay), 233 lower_32_bits(paddr)); 234 235 return 0; 236 } 237 238 static int sun8i_ui_layer_atomic_check(struct drm_plane *plane, 239 struct drm_plane_state *state) 240 { 241 struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane); 242 struct drm_crtc *crtc = state->crtc; 243 struct drm_crtc_state *crtc_state; 244 int min_scale, max_scale; 245 246 if (!crtc) 247 return 0; 248 249 crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc); 250 if (WARN_ON(!crtc_state)) 251 return -EINVAL; 252 253 min_scale = DRM_PLANE_HELPER_NO_SCALING; 254 max_scale = DRM_PLANE_HELPER_NO_SCALING; 255 256 if (layer->mixer->cfg->scaler_mask & BIT(layer->channel)) { 257 min_scale = SUN8I_UI_SCALER_SCALE_MIN; 258 max_scale = SUN8I_UI_SCALER_SCALE_MAX; 259 } 260 261 return drm_atomic_helper_check_plane_state(state, crtc_state, 262 min_scale, max_scale, 263 true, true); 264 } 265 266 static void sun8i_ui_layer_atomic_disable(struct drm_plane *plane, 267 struct drm_plane_state *old_state) 268 { 269 struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane); 270 unsigned int old_zpos = old_state->normalized_zpos; 271 struct sun8i_mixer *mixer = layer->mixer; 272 273 sun8i_ui_layer_enable(mixer, layer->channel, layer->overlay, false, 0, 274 old_zpos); 275 } 276 277 static void sun8i_ui_layer_atomic_update(struct drm_plane *plane, 278 struct drm_plane_state *old_state) 279 { 280 struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane); 281 unsigned int zpos = plane->state->normalized_zpos; 282 unsigned int old_zpos = old_state->normalized_zpos; 283 struct sun8i_mixer *mixer = layer->mixer; 284 285 if (!plane->state->visible) { 286 sun8i_ui_layer_enable(mixer, layer->channel, 287 layer->overlay, false, 0, old_zpos); 288 return; 289 } 290 291 sun8i_ui_layer_update_coord(mixer, layer->channel, 292 layer->overlay, plane, zpos); 293 sun8i_ui_layer_update_formats(mixer, layer->channel, 294 layer->overlay, plane); 295 sun8i_ui_layer_update_buffer(mixer, layer->channel, 296 layer->overlay, plane); 297 sun8i_ui_layer_enable(mixer, layer->channel, layer->overlay, 298 true, zpos, old_zpos); 299 } 300 301 static struct drm_plane_helper_funcs sun8i_ui_layer_helper_funcs = { 302 .prepare_fb = drm_gem_fb_prepare_fb, 303 .atomic_check = sun8i_ui_layer_atomic_check, 304 .atomic_disable = sun8i_ui_layer_atomic_disable, 305 .atomic_update = sun8i_ui_layer_atomic_update, 306 }; 307 308 static const struct drm_plane_funcs sun8i_ui_layer_funcs = { 309 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, 310 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, 311 .destroy = drm_plane_cleanup, 312 .disable_plane = drm_atomic_helper_disable_plane, 313 .reset = drm_atomic_helper_plane_reset, 314 .update_plane = drm_atomic_helper_update_plane, 315 }; 316 317 static const u32 sun8i_ui_layer_formats[] = { 318 DRM_FORMAT_ABGR1555, 319 DRM_FORMAT_ABGR4444, 320 DRM_FORMAT_ABGR8888, 321 DRM_FORMAT_ARGB1555, 322 DRM_FORMAT_ARGB4444, 323 DRM_FORMAT_ARGB8888, 324 DRM_FORMAT_BGR565, 325 DRM_FORMAT_BGR888, 326 DRM_FORMAT_BGRA5551, 327 DRM_FORMAT_BGRA4444, 328 DRM_FORMAT_BGRA8888, 329 DRM_FORMAT_BGRX8888, 330 DRM_FORMAT_RGB565, 331 DRM_FORMAT_RGB888, 332 DRM_FORMAT_RGBA4444, 333 DRM_FORMAT_RGBA5551, 334 DRM_FORMAT_RGBA8888, 335 DRM_FORMAT_RGBX8888, 336 DRM_FORMAT_XBGR8888, 337 DRM_FORMAT_XRGB8888, 338 }; 339 340 struct sun8i_ui_layer *sun8i_ui_layer_init_one(struct drm_device *drm, 341 struct sun8i_mixer *mixer, 342 int index) 343 { 344 enum drm_plane_type type = DRM_PLANE_TYPE_OVERLAY; 345 int channel = mixer->cfg->vi_num + index; 346 struct sun8i_ui_layer *layer; 347 unsigned int plane_cnt; 348 int ret; 349 350 layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL); 351 if (!layer) 352 return ERR_PTR(-ENOMEM); 353 354 if (index == 0) 355 type = DRM_PLANE_TYPE_PRIMARY; 356 357 /* possible crtcs are set later */ 358 ret = drm_universal_plane_init(drm, &layer->plane, 0, 359 &sun8i_ui_layer_funcs, 360 sun8i_ui_layer_formats, 361 ARRAY_SIZE(sun8i_ui_layer_formats), 362 NULL, type, NULL); 363 if (ret) { 364 dev_err(drm->dev, "Couldn't initialize layer\n"); 365 return ERR_PTR(ret); 366 } 367 368 plane_cnt = mixer->cfg->ui_num + mixer->cfg->vi_num; 369 370 ret = drm_plane_create_zpos_property(&layer->plane, channel, 371 0, plane_cnt - 1); 372 if (ret) { 373 dev_err(drm->dev, "Couldn't add zpos property\n"); 374 return ERR_PTR(ret); 375 } 376 377 drm_plane_helper_add(&layer->plane, &sun8i_ui_layer_helper_funcs); 378 layer->mixer = mixer; 379 layer->channel = channel; 380 layer->overlay = 0; 381 382 return layer; 383 } 384