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_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_print.h> 22 #include <drm/drm_probe_helper.h> 23 24 #include "sun8i_mixer.h" 25 #include "sun8i_ui_layer.h" 26 #include "sun8i_ui_scaler.h" 27 #include "sun8i_vi_scaler.h" 28 29 static void sun8i_ui_layer_disable(struct sun8i_layer *layer) 30 { 31 u32 ch_base = sun8i_channel_base(layer); 32 33 regmap_write(layer->regs, 34 SUN8I_MIXER_CHAN_UI_LAYER_ATTR(ch_base, layer->overlay), 0); 35 } 36 37 static void sun8i_ui_layer_update_attributes(struct sun8i_layer *layer, 38 struct drm_plane *plane) 39 { 40 struct drm_plane_state *state = plane->state; 41 const struct drm_format_info *fmt; 42 u32 val, ch_base, hw_fmt; 43 44 ch_base = sun8i_channel_base(layer); 45 fmt = state->fb->format; 46 sun8i_mixer_drm_format_to_hw(fmt->format, &hw_fmt); 47 48 val = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA(state->alpha >> 8); 49 val |= (state->alpha == DRM_BLEND_ALPHA_OPAQUE) ? 50 SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_PIXEL : 51 SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_COMBINED; 52 val |= hw_fmt << SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_OFFSET; 53 val |= SUN8I_MIXER_CHAN_UI_LAYER_ATTR_EN; 54 55 regmap_write(layer->regs, 56 SUN8I_MIXER_CHAN_UI_LAYER_ATTR(ch_base, layer->overlay), val); 57 } 58 59 static void sun8i_ui_layer_update_coord(struct sun8i_layer *layer, 60 struct drm_plane *plane) 61 { 62 struct drm_plane_state *state = plane->state; 63 u32 src_w, src_h, dst_w, dst_h; 64 u32 outsize, insize; 65 u32 hphase, vphase; 66 u32 ch_base; 67 68 DRM_DEBUG_DRIVER("Updating UI channel %d overlay %d\n", 69 layer->channel, layer->overlay); 70 71 ch_base = sun8i_channel_base(layer); 72 73 src_w = drm_rect_width(&state->src) >> 16; 74 src_h = drm_rect_height(&state->src) >> 16; 75 dst_w = drm_rect_width(&state->dst); 76 dst_h = drm_rect_height(&state->dst); 77 78 hphase = state->src.x1 & 0xffff; 79 vphase = state->src.y1 & 0xffff; 80 81 insize = SUN8I_MIXER_SIZE(src_w, src_h); 82 outsize = SUN8I_MIXER_SIZE(dst_w, dst_h); 83 84 /* Set height and width */ 85 DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n", 86 state->src.x1 >> 16, state->src.y1 >> 16); 87 DRM_DEBUG_DRIVER("Layer source size W: %d H: %d\n", src_w, src_h); 88 regmap_write(layer->regs, 89 SUN8I_MIXER_CHAN_UI_LAYER_SIZE(ch_base, layer->overlay), 90 insize); 91 regmap_write(layer->regs, 92 SUN8I_MIXER_CHAN_UI_OVL_SIZE(ch_base), 93 insize); 94 95 if (insize != outsize || hphase || vphase) { 96 u32 hscale, vscale; 97 98 DRM_DEBUG_DRIVER("HW scaling is enabled\n"); 99 100 hscale = state->src_w / state->crtc_w; 101 vscale = state->src_h / state->crtc_h; 102 103 if (layer->cfg->de_type == SUN8I_MIXER_DE33) { 104 sun8i_vi_scaler_setup(layer, src_w, src_h, dst_w, dst_h, 105 hscale, vscale, hphase, vphase, 106 state->fb->format); 107 sun8i_vi_scaler_enable(layer, true); 108 } else { 109 sun8i_ui_scaler_setup(layer, src_w, src_h, dst_w, dst_h, 110 hscale, vscale, hphase, vphase); 111 sun8i_ui_scaler_enable(layer, true); 112 } 113 } else { 114 DRM_DEBUG_DRIVER("HW scaling is not needed\n"); 115 if (layer->cfg->de_type == SUN8I_MIXER_DE33) 116 sun8i_vi_scaler_enable(layer, false); 117 else 118 sun8i_ui_scaler_enable(layer, false); 119 } 120 } 121 122 static void sun8i_ui_layer_update_buffer(struct sun8i_layer *layer, 123 struct drm_plane *plane) 124 { 125 struct drm_plane_state *state = plane->state; 126 struct drm_framebuffer *fb = state->fb; 127 dma_addr_t dma_addr; 128 u32 ch_base; 129 130 ch_base = sun8i_channel_base(layer); 131 132 /* Get the start of the displayed memory */ 133 dma_addr = drm_fb_dma_get_gem_addr(fb, state, 0); 134 135 /* Set the line width */ 136 DRM_DEBUG_DRIVER("Layer line width: %d bytes\n", fb->pitches[0]); 137 regmap_write(layer->regs, 138 SUN8I_MIXER_CHAN_UI_LAYER_PITCH(ch_base, layer->overlay), 139 fb->pitches[0]); 140 141 DRM_DEBUG_DRIVER("Setting buffer address to %pad\n", &dma_addr); 142 143 regmap_write(layer->regs, 144 SUN8I_MIXER_CHAN_UI_LAYER_TOP_LADDR(ch_base, layer->overlay), 145 lower_32_bits(dma_addr)); 146 } 147 148 static int sun8i_ui_layer_atomic_check(struct drm_plane *plane, 149 struct drm_atomic_state *state) 150 { 151 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, 152 plane); 153 struct sun8i_layer *layer = plane_to_sun8i_layer(plane); 154 struct drm_crtc *crtc = new_plane_state->crtc; 155 struct drm_crtc_state *crtc_state; 156 const struct drm_format_info *fmt; 157 int min_scale, max_scale, ret; 158 u32 hw_fmt; 159 160 if (!crtc) 161 return 0; 162 163 crtc_state = drm_atomic_get_new_crtc_state(state, crtc); 164 if (WARN_ON(!crtc_state)) 165 return -EINVAL; 166 167 fmt = new_plane_state->fb->format; 168 ret = sun8i_mixer_drm_format_to_hw(fmt->format, &hw_fmt); 169 if (ret || fmt->is_yuv) { 170 DRM_DEBUG_DRIVER("Invalid plane format\n"); 171 return -EINVAL; 172 } 173 174 min_scale = DRM_PLANE_NO_SCALING; 175 max_scale = DRM_PLANE_NO_SCALING; 176 177 if (layer->cfg->scaler_mask & BIT(layer->channel)) { 178 min_scale = SUN8I_UI_SCALER_SCALE_MIN; 179 max_scale = SUN8I_UI_SCALER_SCALE_MAX; 180 } 181 182 return drm_atomic_helper_check_plane_state(new_plane_state, 183 crtc_state, 184 min_scale, max_scale, 185 true, true); 186 } 187 188 189 static void sun8i_ui_layer_atomic_update(struct drm_plane *plane, 190 struct drm_atomic_state *state) 191 { 192 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 193 plane); 194 struct sun8i_layer *layer = plane_to_sun8i_layer(plane); 195 196 if (!new_state->crtc || !new_state->visible) { 197 sun8i_ui_layer_disable(layer); 198 return; 199 } 200 201 sun8i_ui_layer_update_attributes(layer, plane); 202 sun8i_ui_layer_update_coord(layer, plane); 203 sun8i_ui_layer_update_buffer(layer, plane); 204 } 205 206 static const struct drm_plane_helper_funcs sun8i_ui_layer_helper_funcs = { 207 .atomic_check = sun8i_ui_layer_atomic_check, 208 .atomic_update = sun8i_ui_layer_atomic_update, 209 }; 210 211 static const struct drm_plane_funcs sun8i_ui_layer_funcs = { 212 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, 213 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, 214 .destroy = drm_plane_cleanup, 215 .disable_plane = drm_atomic_helper_disable_plane, 216 .reset = drm_atomic_helper_plane_reset, 217 .update_plane = drm_atomic_helper_update_plane, 218 }; 219 220 static const u32 sun8i_ui_layer_formats[] = { 221 DRM_FORMAT_ABGR1555, 222 DRM_FORMAT_ABGR4444, 223 DRM_FORMAT_ABGR8888, 224 DRM_FORMAT_ARGB1555, 225 DRM_FORMAT_ARGB4444, 226 DRM_FORMAT_ARGB8888, 227 DRM_FORMAT_BGR565, 228 DRM_FORMAT_BGR888, 229 DRM_FORMAT_BGRA5551, 230 DRM_FORMAT_BGRA4444, 231 DRM_FORMAT_BGRA8888, 232 DRM_FORMAT_BGRX8888, 233 DRM_FORMAT_RGB565, 234 DRM_FORMAT_RGB888, 235 DRM_FORMAT_RGBA4444, 236 DRM_FORMAT_RGBA5551, 237 DRM_FORMAT_RGBA8888, 238 DRM_FORMAT_RGBX8888, 239 DRM_FORMAT_XBGR8888, 240 DRM_FORMAT_XRGB8888, 241 }; 242 243 static const uint64_t sun8i_layer_modifiers[] = { 244 DRM_FORMAT_MOD_LINEAR, 245 DRM_FORMAT_MOD_INVALID 246 }; 247 248 struct sun8i_layer *sun8i_ui_layer_init_one(struct drm_device *drm, 249 enum drm_plane_type type, 250 struct regmap *regs, 251 int index, int phy_index, 252 int plane_cnt, 253 const struct sun8i_layer_cfg *cfg) 254 { 255 struct sun8i_layer *layer; 256 int ret; 257 258 layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL); 259 if (!layer) 260 return ERR_PTR(-ENOMEM); 261 262 layer->type = SUN8I_LAYER_TYPE_UI; 263 layer->index = index; 264 layer->channel = phy_index; 265 layer->overlay = 0; 266 layer->regs = regs; 267 layer->cfg = cfg; 268 269 /* possible crtcs are set later */ 270 ret = drm_universal_plane_init(drm, &layer->plane, 0, 271 &sun8i_ui_layer_funcs, 272 sun8i_ui_layer_formats, 273 ARRAY_SIZE(sun8i_ui_layer_formats), 274 sun8i_layer_modifiers, type, NULL); 275 if (ret) { 276 dev_err(drm->dev, "Couldn't initialize layer\n"); 277 return ERR_PTR(ret); 278 } 279 280 ret = drm_plane_create_alpha_property(&layer->plane); 281 if (ret) { 282 dev_err(drm->dev, "Couldn't add alpha property\n"); 283 return ERR_PTR(ret); 284 } 285 286 ret = drm_plane_create_zpos_property(&layer->plane, index, 287 0, plane_cnt - 1); 288 if (ret) { 289 dev_err(drm->dev, "Couldn't add zpos property\n"); 290 return ERR_PTR(ret); 291 } 292 293 drm_plane_helper_add(&layer->plane, &sun8i_ui_layer_helper_funcs); 294 295 return layer; 296 } 297