drivers/gpu/drm/sun4i/sun8i_ui_layer.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (C) Icenowy Zheng <[email protected]>
   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 <[email protected]>
  10  */
  11
  12 #include <drm/drm_atomic.h>
  13 #include <drm/drm_atomic_helper.h>
  14 #include <drm/drm_blend.h>
  15 #include <drm/drm_crtc.h>
  16 #include <drm/drm_fb_dma_helper.h>
  17 #include <drm/drm_fourcc.h>
  18 #include <drm/drm_framebuffer.h>
  19 #include <drm/drm_gem_atomic_helper.h>
  20 #include <drm/drm_gem_dma_helper.h>
  21 #include <drm/drm_probe_helper.h>
  22
  23 #include "sun8i_mixer.h"
  24 #include "sun8i_ui_layer.h"
  25 #include "sun8i_ui_scaler.h"
  26
  27 static void sun8i_ui_layer_enable(struct sun8i_mixer *mixer, int channel,
  28                                   int overlay, bool enable, unsigned int zpos,
  29                                   unsigned int old_zpos)
  30 {
  31         u32 val, bld_base, ch_base;
  32
  33         bld_base = sun8i_blender_base(mixer);
  34         ch_base = sun8i_channel_base(mixer, channel);
  35
  36         DRM_DEBUG_DRIVER("%sabling channel %d overlay %d\n",
  37                          enable ? "En" : "Dis", channel, overlay);
  38
  39         if (enable)
  40                 val = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_EN;
  41         else
  42                 val = 0;
  43
  44         regmap_update_bits(mixer->engine.regs,
  45                            SUN8I_MIXER_CHAN_UI_LAYER_ATTR(ch_base, overlay),
  46                            SUN8I_MIXER_CHAN_UI_LAYER_ATTR_EN, val);
  47
  48         if (!enable || zpos != old_zpos) {
  49                 regmap_update_bits(mixer->engine.regs,
  50                                    SUN8I_MIXER_BLEND_PIPE_CTL(bld_base),
  51                                    SUN8I_MIXER_BLEND_PIPE_CTL_EN(old_zpos),
  52                                    0);
  53
  54                 regmap_update_bits(mixer->engine.regs,
  55                                    SUN8I_MIXER_BLEND_ROUTE(bld_base),
  56                                    SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(old_zpos),
  57                                    0);
  58         }
  59
  60         if (enable) {
  61                 val = SUN8I_MIXER_BLEND_PIPE_CTL_EN(zpos);
  62
  63                 regmap_update_bits(mixer->engine.regs,
  64                                    SUN8I_MIXER_BLEND_PIPE_CTL(bld_base),
  65                                    val, val);
  66
  67                 val = channel << SUN8I_MIXER_BLEND_ROUTE_PIPE_SHIFT(zpos);
  68
  69                 regmap_update_bits(mixer->engine.regs,
  70                                    SUN8I_MIXER_BLEND_ROUTE(bld_base),
  71                                    SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(zpos),
  72                                    val);
  73         }
  74 }
  75
  76 static void sun8i_ui_layer_update_alpha(struct sun8i_mixer *mixer, int channel,
  77                                         int overlay, struct drm_plane *plane)
  78 {
  79         u32 mask, val, ch_base;
  80
  81         ch_base = sun8i_channel_base(mixer, channel);
  82
  83         mask = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_MASK |
  84                 SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MASK;
  85
  86         val = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA(plane->state->alpha >> 8);
  87
  88         val |= (plane->state->alpha == DRM_BLEND_ALPHA_OPAQUE) ?
  89                 SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_PIXEL :
  90                 SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_COMBINED;
  91
  92         regmap_update_bits(mixer->engine.regs,
  93                            SUN8I_MIXER_CHAN_UI_LAYER_ATTR(ch_base, overlay),
  94                            mask, val);
  95 }
  96
  97 static int sun8i_ui_layer_update_coord(struct sun8i_mixer *mixer, int channel,
  98                                        int overlay, struct drm_plane *plane,
  99                                        unsigned int zpos)
 100 {
 101         struct drm_plane_state *state = plane->state;
 102         u32 src_w, src_h, dst_w, dst_h;
 103         u32 bld_base, ch_base;
 104         u32 outsize, insize;
 105         u32 hphase, vphase;
 106
 107         DRM_DEBUG_DRIVER("Updating UI channel %d overlay %d\n",
 108                          channel, overlay);
 109
 110         bld_base = sun8i_blender_base(mixer);
 111         ch_base = sun8i_channel_base(mixer, channel);
 112
 113         src_w = drm_rect_width(&state->src) >> 16;
 114         src_h = drm_rect_height(&state->src) >> 16;
 115         dst_w = drm_rect_width(&state->dst);
 116         dst_h = drm_rect_height(&state->dst);
 117
 118         hphase = state->src.x1 & 0xffff;
 119         vphase = state->src.y1 & 0xffff;
 120
 121         insize = SUN8I_MIXER_SIZE(src_w, src_h);
 122         outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);
 123
 124         /* Set height and width */
 125         DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n",
 126                          state->src.x1 >> 16, state->src.y1 >> 16);
 127         DRM_DEBUG_DRIVER("Layer source size W: %d H: %d\n", src_w, src_h);
 128         regmap_write(mixer->engine.regs,
 129                      SUN8I_MIXER_CHAN_UI_LAYER_SIZE(ch_base, overlay),
 130                      insize);
 131         regmap_write(mixer->engine.regs,
 132                      SUN8I_MIXER_CHAN_UI_OVL_SIZE(ch_base),
 133                      insize);
 134
 135         if (insize != outsize || hphase || vphase) {
 136                 u32 hscale, vscale;
 137
 138                 DRM_DEBUG_DRIVER("HW scaling is enabled\n");
 139
 140                 hscale = state->src_w / state->crtc_w;
 141                 vscale = state->src_h / state->crtc_h;
 142
 143                 sun8i_ui_scaler_setup(mixer, channel, src_w, src_h, dst_w,
 144                                       dst_h, hscale, vscale, hphase, vphase);
 145                 sun8i_ui_scaler_enable(mixer, channel, true);
 146         } else {
 147                 DRM_DEBUG_DRIVER("HW scaling is not needed\n");
 148                 sun8i_ui_scaler_enable(mixer, channel, false);
 149         }
 150
 151         /* Set base coordinates */
 152         DRM_DEBUG_DRIVER("Layer destination coordinates X: %d Y: %d\n",
 153                          state->dst.x1, state->dst.y1);
 154         DRM_DEBUG_DRIVER("Layer destination size W: %d H: %d\n", dst_w, dst_h);
 155         regmap_write(mixer->engine.regs,
 156                      SUN8I_MIXER_BLEND_ATTR_COORD(bld_base, zpos),
 157                      SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1));
 158         regmap_write(mixer->engine.regs,
 159                      SUN8I_MIXER_BLEND_ATTR_INSIZE(bld_base, zpos),
 160                      outsize);
 161
 162         return 0;
 163 }
 164
 165 static int sun8i_ui_layer_update_formats(struct sun8i_mixer *mixer, int channel,
 166                                          int overlay, struct drm_plane *plane)
 167 {
 168         struct drm_plane_state *state = plane->state;
 169         const struct drm_format_info *fmt;
 170         u32 val, ch_base, hw_fmt;
 171         int ret;
 172
 173         ch_base = sun8i_channel_base(mixer, channel);
 174
 175         fmt = state->fb->format;
 176         ret = sun8i_mixer_drm_format_to_hw(fmt->format, &hw_fmt);
 177         if (ret || fmt->is_yuv) {
 178                 DRM_DEBUG_DRIVER("Invalid format\n");
 179                 return -EINVAL;
 180         }
 181
 182         val = hw_fmt << SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_OFFSET;
 183         regmap_update_bits(mixer->engine.regs,
 184                            SUN8I_MIXER_CHAN_UI_LAYER_ATTR(ch_base, overlay),
 185                            SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_MASK, val);
 186
 187         return 0;
 188 }
 189
 190 static int sun8i_ui_layer_update_buffer(struct sun8i_mixer *mixer, int channel,
 191                                         int overlay, struct drm_plane *plane)
 192 {
 193         struct drm_plane_state *state = plane->state;
 194         struct drm_framebuffer *fb = state->fb;
 195         struct drm_gem_dma_object *gem;
 196         dma_addr_t dma_addr;
 197         u32 ch_base;
 198         int bpp;
 199
 200         ch_base = sun8i_channel_base(mixer, channel);
 201
 202         /* Get the physical address of the buffer in memory */
 203         gem = drm_fb_dma_get_gem_obj(fb, 0);
 204
 205         DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->dma_addr);
 206
 207         /* Compute the start of the displayed memory */
 208         bpp = fb->format->cpp[0];
 209         dma_addr = gem->dma_addr + fb->offsets[0];
 210
 211         /* Fixup framebuffer address for src coordinates */
 212         dma_addr += (state->src.x1 >> 16) * bpp;
 213         dma_addr += (state->src.y1 >> 16) * fb->pitches[0];
 214
 215         /* Set the line width */
 216         DRM_DEBUG_DRIVER("Layer line width: %d bytes\n", fb->pitches[0]);
 217         regmap_write(mixer->engine.regs,
 218                      SUN8I_MIXER_CHAN_UI_LAYER_PITCH(ch_base, overlay),
 219                      fb->pitches[0]);
 220
 221         DRM_DEBUG_DRIVER("Setting buffer address to %pad\n", &dma_addr);
 222
 223         regmap_write(mixer->engine.regs,
 224                      SUN8I_MIXER_CHAN_UI_LAYER_TOP_LADDR(ch_base, overlay),
 225                      lower_32_bits(dma_addr));
 226
 227         return 0;
 228 }
 229
 230 static int sun8i_ui_layer_atomic_check(struct drm_plane *plane,
 231                                        struct drm_atomic_state *state)
 232 {
 233         struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
 234                                                                                  plane);
 235         struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane);
 236         struct drm_crtc *crtc = new_plane_state->crtc;
 237         struct drm_crtc_state *crtc_state;
 238         int min_scale, max_scale;
 239
 240         if (!crtc)
 241                 return 0;
 242
 243         crtc_state = drm_atomic_get_existing_crtc_state(state,
 244                                                         crtc);
 245         if (WARN_ON(!crtc_state))
 246                 return -EINVAL;
 247
 248         min_scale = DRM_PLANE_NO_SCALING;
 249         max_scale = DRM_PLANE_NO_SCALING;
 250
 251         if (layer->mixer->cfg->scaler_mask & BIT(layer->channel)) {
 252                 min_scale = SUN8I_UI_SCALER_SCALE_MIN;
 253                 max_scale = SUN8I_UI_SCALER_SCALE_MAX;
 254         }
 255
 256         return drm_atomic_helper_check_plane_state(new_plane_state,
 257                                                    crtc_state,
 258                                                    min_scale, max_scale,
 259                                                    true, true);
 260 }
 261
 262 static void sun8i_ui_layer_atomic_disable(struct drm_plane *plane,
 263                                           struct drm_atomic_state *state)
 264 {
 265         struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 266                                                                            plane);
 267         struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane);
 268         unsigned int old_zpos = old_state->normalized_zpos;
 269         struct sun8i_mixer *mixer = layer->mixer;
 270
 271         sun8i_ui_layer_enable(mixer, layer->channel, layer->overlay, false, 0,
 272                               old_zpos);
 273 }
 274
 275 static void sun8i_ui_layer_atomic_update(struct drm_plane *plane,
 276                                          struct drm_atomic_state *state)
 277 {
 278         struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 279                                                                            plane);
 280         struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
 281                                                                            plane);
 282         struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane);
 283         unsigned int zpos = new_state->normalized_zpos;
 284         unsigned int old_zpos = old_state->normalized_zpos;
 285         struct sun8i_mixer *mixer = layer->mixer;
 286
 287         if (!new_state->visible) {
 288                 sun8i_ui_layer_enable(mixer, layer->channel,
 289                                       layer->overlay, false, 0, old_zpos);
 290                 return;
 291         }
 292
 293         sun8i_ui_layer_update_coord(mixer, layer->channel,
 294                                     layer->overlay, plane, zpos);
 295         sun8i_ui_layer_update_alpha(mixer, layer->channel,
 296                                     layer->overlay, plane);
 297         sun8i_ui_layer_update_formats(mixer, layer->channel,
 298                                       layer->overlay, plane);
 299         sun8i_ui_layer_update_buffer(mixer, layer->channel,
 300                                      layer->overlay, plane);
 301         sun8i_ui_layer_enable(mixer, layer->channel, layer->overlay,
 302                               true, zpos, old_zpos);
 303 }
 304
 305 static const struct drm_plane_helper_funcs sun8i_ui_layer_helper_funcs = {
 306         .atomic_check   = sun8i_ui_layer_atomic_check,
 307         .atomic_disable = sun8i_ui_layer_atomic_disable,
 308         .atomic_update  = sun8i_ui_layer_atomic_update,
 309 };
 310
 311 static const struct drm_plane_funcs sun8i_ui_layer_funcs = {
 312         .atomic_destroy_state   = drm_atomic_helper_plane_destroy_state,
 313         .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
 314         .destroy                = drm_plane_cleanup,
 315         .disable_plane          = drm_atomic_helper_disable_plane,
 316         .reset                  = drm_atomic_helper_plane_reset,
 317         .update_plane           = drm_atomic_helper_update_plane,
 318 };
 319
 320 static const u32 sun8i_ui_layer_formats[] = {
 321         DRM_FORMAT_ABGR1555,
 322         DRM_FORMAT_ABGR4444,
 323         DRM_FORMAT_ABGR8888,
 324         DRM_FORMAT_ARGB1555,
 325         DRM_FORMAT_ARGB4444,
 326         DRM_FORMAT_ARGB8888,
 327         DRM_FORMAT_BGR565,
 328         DRM_FORMAT_BGR888,
 329         DRM_FORMAT_BGRA5551,
 330         DRM_FORMAT_BGRA4444,
 331         DRM_FORMAT_BGRA8888,
 332         DRM_FORMAT_BGRX8888,
 333         DRM_FORMAT_RGB565,
 334         DRM_FORMAT_RGB888,
 335         DRM_FORMAT_RGBA4444,
 336         DRM_FORMAT_RGBA5551,
 337         DRM_FORMAT_RGBA8888,
 338         DRM_FORMAT_RGBX8888,
 339         DRM_FORMAT_XBGR8888,
 340         DRM_FORMAT_XRGB8888,
 341 };
 342
 343 static const uint64_t sun8i_layer_modifiers[] = {
 344         DRM_FORMAT_MOD_LINEAR,
 345         DRM_FORMAT_MOD_INVALID
 346 };
 347
 348 struct sun8i_ui_layer *sun8i_ui_layer_init_one(struct drm_device *drm,
 349                                                struct sun8i_mixer *mixer,
 350                                                int index)
 351 {
 352         enum drm_plane_type type = DRM_PLANE_TYPE_OVERLAY;
 353         int channel = mixer->cfg->vi_num + index;
 354         struct sun8i_ui_layer *layer;
 355         unsigned int plane_cnt;
 356         int ret;
 357
 358         layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
 359         if (!layer)
 360                 return ERR_PTR(-ENOMEM);
 361
 362         if (index == 0)
 363                 type = DRM_PLANE_TYPE_PRIMARY;
 364
 365         /* possible crtcs are set later */
 366         ret = drm_universal_plane_init(drm, &layer->plane, 0,
 367                                        &sun8i_ui_layer_funcs,
 368                                        sun8i_ui_layer_formats,
 369                                        ARRAY_SIZE(sun8i_ui_layer_formats),
 370                                        sun8i_layer_modifiers, type, NULL);
 371         if (ret) {
 372                 dev_err(drm->dev, "Couldn't initialize layer\n");
 373                 return ERR_PTR(ret);
 374         }
 375
 376         plane_cnt = mixer->cfg->ui_num + mixer->cfg->vi_num;
 377
 378         ret = drm_plane_create_alpha_property(&layer->plane);
 379         if (ret) {
 380                 dev_err(drm->dev, "Couldn't add alpha property\n");
 381                 return ERR_PTR(ret);
 382         }
 383
 384         ret = drm_plane_create_zpos_property(&layer->plane, channel,
 385                                              0, plane_cnt - 1);
 386         if (ret) {
 387                 dev_err(drm->dev, "Couldn't add zpos property\n");
 388                 return ERR_PTR(ret);
 389         }
 390
 391         drm_plane_helper_add(&layer->plane, &sun8i_ui_layer_helper_funcs);
 392         layer->mixer = mixer;
 393         layer->channel = channel;
 394         layer->overlay = 0;
 395
 396         return layer;
 397 }