1 /* 2 * Copyright (C) 2016 BayLibre, SAS 3 * Author: Neil Armstrong <narmstrong@baylibre.com> 4 * Copyright (C) 2015 Amlogic, Inc. All rights reserved. 5 * Copyright (C) 2014 Endless Mobile 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation; either version 2 of the 10 * License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, see <http://www.gnu.org/licenses/>. 19 * 20 * Written by: 21 * Jasper St. Pierre <jstpierre@mecheye.net> 22 */ 23 24 #include <linux/kernel.h> 25 #include <linux/module.h> 26 #include <linux/mutex.h> 27 #include <linux/bitfield.h> 28 #include <linux/platform_device.h> 29 #include <drm/drmP.h> 30 #include <drm/drm_atomic.h> 31 #include <drm/drm_atomic_helper.h> 32 #include <drm/drm_plane_helper.h> 33 #include <drm/drm_gem_cma_helper.h> 34 #include <drm/drm_fb_cma_helper.h> 35 #include <drm/drm_rect.h> 36 37 #include "meson_plane.h" 38 #include "meson_vpp.h" 39 #include "meson_viu.h" 40 #include "meson_canvas.h" 41 #include "meson_registers.h" 42 43 /* OSD_SCI_WH_M1 */ 44 #define SCI_WH_M1_W(w) FIELD_PREP(GENMASK(28, 16), w) 45 #define SCI_WH_M1_H(h) FIELD_PREP(GENMASK(12, 0), h) 46 47 /* OSD_SCO_H_START_END */ 48 /* OSD_SCO_V_START_END */ 49 #define SCO_HV_START(start) FIELD_PREP(GENMASK(27, 16), start) 50 #define SCO_HV_END(end) FIELD_PREP(GENMASK(11, 0), end) 51 52 /* OSD_SC_CTRL0 */ 53 #define SC_CTRL0_PATH_EN BIT(3) 54 #define SC_CTRL0_SEL_OSD1 BIT(2) 55 56 /* OSD_VSC_CTRL0 */ 57 #define VSC_BANK_LEN(value) FIELD_PREP(GENMASK(2, 0), value) 58 #define VSC_TOP_INI_RCV_NUM(value) FIELD_PREP(GENMASK(6, 3), value) 59 #define VSC_TOP_RPT_L0_NUM(value) FIELD_PREP(GENMASK(9, 8), value) 60 #define VSC_BOT_INI_RCV_NUM(value) FIELD_PREP(GENMASK(14, 11), value) 61 #define VSC_BOT_RPT_L0_NUM(value) FIELD_PREP(GENMASK(17, 16), value) 62 #define VSC_PROG_INTERLACE BIT(23) 63 #define VSC_VERTICAL_SCALER_EN BIT(24) 64 65 /* OSD_VSC_INI_PHASE */ 66 #define VSC_INI_PHASE_BOT(bottom) FIELD_PREP(GENMASK(31, 16), bottom) 67 #define VSC_INI_PHASE_TOP(top) FIELD_PREP(GENMASK(15, 0), top) 68 69 /* OSD_HSC_CTRL0 */ 70 #define HSC_BANK_LENGTH(value) FIELD_PREP(GENMASK(2, 0), value) 71 #define HSC_INI_RCV_NUM0(value) FIELD_PREP(GENMASK(6, 3), value) 72 #define HSC_RPT_P0_NUM0(value) FIELD_PREP(GENMASK(9, 8), value) 73 #define HSC_HORIZ_SCALER_EN BIT(22) 74 75 /* VPP_OSD_VSC_PHASE_STEP */ 76 /* VPP_OSD_HSC_PHASE_STEP */ 77 #define SC_PHASE_STEP(value) FIELD_PREP(GENMASK(27, 0), value) 78 79 struct meson_plane { 80 struct drm_plane base; 81 struct meson_drm *priv; 82 }; 83 #define to_meson_plane(x) container_of(x, struct meson_plane, base) 84 85 #define FRAC_16_16(mult, div) (((mult) << 16) / (div)) 86 87 static int meson_plane_atomic_check(struct drm_plane *plane, 88 struct drm_plane_state *state) 89 { 90 struct drm_crtc_state *crtc_state; 91 92 if (!state->crtc) 93 return 0; 94 95 crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc); 96 if (IS_ERR(crtc_state)) 97 return PTR_ERR(crtc_state); 98 99 /* 100 * Only allow : 101 * - Upscaling up to 5x, vertical and horizontal 102 * - Final coordinates must match crtc size 103 */ 104 return drm_atomic_helper_check_plane_state(state, crtc_state, 105 FRAC_16_16(1, 5), 106 DRM_PLANE_HELPER_NO_SCALING, 107 false, true); 108 } 109 110 /* Takes a fixed 16.16 number and converts it to integer. */ 111 static inline int64_t fixed16_to_int(int64_t value) 112 { 113 return value >> 16; 114 } 115 116 static void meson_plane_atomic_update(struct drm_plane *plane, 117 struct drm_plane_state *old_state) 118 { 119 struct meson_plane *meson_plane = to_meson_plane(plane); 120 struct drm_plane_state *state = plane->state; 121 struct drm_rect dest = drm_plane_state_dest(state); 122 struct meson_drm *priv = meson_plane->priv; 123 struct drm_framebuffer *fb = state->fb; 124 struct drm_gem_cma_object *gem; 125 unsigned long flags; 126 int vsc_ini_rcv_num, vsc_ini_rpt_p0_num; 127 int vsc_bot_rcv_num, vsc_bot_rpt_p0_num; 128 int hsc_ini_rcv_num, hsc_ini_rpt_p0_num; 129 int hf_phase_step, vf_phase_step; 130 int src_w, src_h, dst_w, dst_h; 131 int bot_ini_phase; 132 int hf_bank_len; 133 int vf_bank_len; 134 u8 canvas_id_osd1; 135 136 /* 137 * Update Coordinates 138 * Update Formats 139 * Update Buffer 140 * Enable Plane 141 */ 142 spin_lock_irqsave(&priv->drm->event_lock, flags); 143 144 /* Enable OSD and BLK0, set max global alpha */ 145 priv->viu.osd1_ctrl_stat = OSD_ENABLE | 146 (0xFF << OSD_GLOBAL_ALPHA_SHIFT) | 147 OSD_BLK0_ENABLE; 148 149 if (priv->canvas) 150 canvas_id_osd1 = priv->canvas_id_osd1; 151 else 152 canvas_id_osd1 = MESON_CANVAS_ID_OSD1; 153 154 /* Set up BLK0 to point to the right canvas */ 155 priv->viu.osd1_blk0_cfg[0] = ((canvas_id_osd1 << OSD_CANVAS_SEL) | 156 OSD_ENDIANNESS_LE); 157 158 /* On GXBB, Use the old non-HDR RGB2YUV converter */ 159 if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) 160 priv->viu.osd1_blk0_cfg[0] |= OSD_OUTPUT_COLOR_RGB; 161 162 switch (fb->format->format) { 163 case DRM_FORMAT_XRGB8888: 164 /* For XRGB, replace the pixel's alpha by 0xFF */ 165 writel_bits_relaxed(OSD_REPLACE_EN, OSD_REPLACE_EN, 166 priv->io_base + _REG(VIU_OSD1_CTRL_STAT2)); 167 priv->viu.osd1_blk0_cfg[0] |= OSD_BLK_MODE_32 | 168 OSD_COLOR_MATRIX_32_ARGB; 169 break; 170 case DRM_FORMAT_ARGB8888: 171 /* For ARGB, use the pixel's alpha */ 172 writel_bits_relaxed(OSD_REPLACE_EN, 0, 173 priv->io_base + _REG(VIU_OSD1_CTRL_STAT2)); 174 priv->viu.osd1_blk0_cfg[0] |= OSD_BLK_MODE_32 | 175 OSD_COLOR_MATRIX_32_ARGB; 176 break; 177 case DRM_FORMAT_RGB888: 178 priv->viu.osd1_blk0_cfg[0] |= OSD_BLK_MODE_24 | 179 OSD_COLOR_MATRIX_24_RGB; 180 break; 181 case DRM_FORMAT_RGB565: 182 priv->viu.osd1_blk0_cfg[0] |= OSD_BLK_MODE_16 | 183 OSD_COLOR_MATRIX_16_RGB565; 184 break; 185 }; 186 187 /* Default scaler parameters */ 188 vsc_bot_rcv_num = 0; 189 vsc_bot_rpt_p0_num = 0; 190 hf_bank_len = 4; 191 vf_bank_len = 4; 192 193 if (state->crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) { 194 vsc_bot_rcv_num = 6; 195 vsc_bot_rpt_p0_num = 2; 196 } 197 198 hsc_ini_rcv_num = hf_bank_len; 199 vsc_ini_rcv_num = vf_bank_len; 200 hsc_ini_rpt_p0_num = (hf_bank_len / 2) - 1; 201 vsc_ini_rpt_p0_num = (vf_bank_len / 2) - 1; 202 203 src_w = fixed16_to_int(state->src_w); 204 src_h = fixed16_to_int(state->src_h); 205 dst_w = state->crtc_w; 206 dst_h = state->crtc_h; 207 208 /* 209 * When the output is interlaced, the OSD must switch between 210 * each field using the INTERLACE_SEL_ODD (0) of VIU_OSD1_BLK0_CFG_W0 211 * at each vsync. 212 * But the vertical scaler can provide such funtionnality if 213 * is configured for 2:1 scaling with interlace options enabled. 214 */ 215 if (state->crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) { 216 dest.y1 /= 2; 217 dest.y2 /= 2; 218 dst_h /= 2; 219 } 220 221 hf_phase_step = ((src_w << 18) / dst_w) << 6; 222 vf_phase_step = (src_h << 20) / dst_h; 223 224 if (state->crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) 225 bot_ini_phase = ((vf_phase_step / 2) >> 4); 226 else 227 bot_ini_phase = 0; 228 229 vf_phase_step = (vf_phase_step << 4); 230 231 /* In interlaced mode, scaler is always active */ 232 if (src_h != dst_h || src_w != dst_w) { 233 priv->viu.osd_sc_i_wh_m1 = SCI_WH_M1_W(src_w - 1) | 234 SCI_WH_M1_H(src_h - 1); 235 priv->viu.osd_sc_o_h_start_end = SCO_HV_START(dest.x1) | 236 SCO_HV_END(dest.x2 - 1); 237 priv->viu.osd_sc_o_v_start_end = SCO_HV_START(dest.y1) | 238 SCO_HV_END(dest.y2 - 1); 239 /* Enable OSD Scaler */ 240 priv->viu.osd_sc_ctrl0 = SC_CTRL0_PATH_EN | SC_CTRL0_SEL_OSD1; 241 } else { 242 priv->viu.osd_sc_i_wh_m1 = 0; 243 priv->viu.osd_sc_o_h_start_end = 0; 244 priv->viu.osd_sc_o_v_start_end = 0; 245 priv->viu.osd_sc_ctrl0 = 0; 246 } 247 248 /* In interlaced mode, vertical scaler is always active */ 249 if (src_h != dst_h) { 250 priv->viu.osd_sc_v_ctrl0 = 251 VSC_BANK_LEN(vf_bank_len) | 252 VSC_TOP_INI_RCV_NUM(vsc_ini_rcv_num) | 253 VSC_TOP_RPT_L0_NUM(vsc_ini_rpt_p0_num) | 254 VSC_VERTICAL_SCALER_EN; 255 256 if (state->crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) 257 priv->viu.osd_sc_v_ctrl0 |= 258 VSC_BOT_INI_RCV_NUM(vsc_bot_rcv_num) | 259 VSC_BOT_RPT_L0_NUM(vsc_bot_rpt_p0_num) | 260 VSC_PROG_INTERLACE; 261 262 priv->viu.osd_sc_v_phase_step = SC_PHASE_STEP(vf_phase_step); 263 priv->viu.osd_sc_v_ini_phase = VSC_INI_PHASE_BOT(bot_ini_phase); 264 } else { 265 priv->viu.osd_sc_v_ctrl0 = 0; 266 priv->viu.osd_sc_v_phase_step = 0; 267 priv->viu.osd_sc_v_ini_phase = 0; 268 } 269 270 /* Horizontal scaler is only used if width does not match */ 271 if (src_w != dst_w) { 272 priv->viu.osd_sc_h_ctrl0 = 273 HSC_BANK_LENGTH(hf_bank_len) | 274 HSC_INI_RCV_NUM0(hsc_ini_rcv_num) | 275 HSC_RPT_P0_NUM0(hsc_ini_rpt_p0_num) | 276 HSC_HORIZ_SCALER_EN; 277 priv->viu.osd_sc_h_phase_step = SC_PHASE_STEP(hf_phase_step); 278 priv->viu.osd_sc_h_ini_phase = 0; 279 } else { 280 priv->viu.osd_sc_h_ctrl0 = 0; 281 priv->viu.osd_sc_h_phase_step = 0; 282 priv->viu.osd_sc_h_ini_phase = 0; 283 } 284 285 /* 286 * The format of these registers is (x2 << 16 | x1), 287 * where x2 is exclusive. 288 * e.g. +30x1920 would be (1919 << 16) | 30 289 */ 290 priv->viu.osd1_blk0_cfg[1] = 291 ((fixed16_to_int(state->src.x2) - 1) << 16) | 292 fixed16_to_int(state->src.x1); 293 priv->viu.osd1_blk0_cfg[2] = 294 ((fixed16_to_int(state->src.y2) - 1) << 16) | 295 fixed16_to_int(state->src.y1); 296 priv->viu.osd1_blk0_cfg[3] = ((dest.x2 - 1) << 16) | dest.x1; 297 priv->viu.osd1_blk0_cfg[4] = ((dest.y2 - 1) << 16) | dest.y1; 298 299 /* Update Canvas with buffer address */ 300 gem = drm_fb_cma_get_gem_obj(fb, 0); 301 302 priv->viu.osd1_addr = gem->paddr; 303 priv->viu.osd1_stride = fb->pitches[0]; 304 priv->viu.osd1_height = fb->height; 305 306 spin_unlock_irqrestore(&priv->drm->event_lock, flags); 307 } 308 309 static void meson_plane_atomic_disable(struct drm_plane *plane, 310 struct drm_plane_state *old_state) 311 { 312 struct meson_plane *meson_plane = to_meson_plane(plane); 313 struct meson_drm *priv = meson_plane->priv; 314 315 /* Disable OSD1 */ 316 writel_bits_relaxed(VPP_OSD1_POSTBLEND, 0, 317 priv->io_base + _REG(VPP_MISC)); 318 319 } 320 321 static const struct drm_plane_helper_funcs meson_plane_helper_funcs = { 322 .atomic_check = meson_plane_atomic_check, 323 .atomic_disable = meson_plane_atomic_disable, 324 .atomic_update = meson_plane_atomic_update, 325 }; 326 327 static const struct drm_plane_funcs meson_plane_funcs = { 328 .update_plane = drm_atomic_helper_update_plane, 329 .disable_plane = drm_atomic_helper_disable_plane, 330 .destroy = drm_plane_cleanup, 331 .reset = drm_atomic_helper_plane_reset, 332 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, 333 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, 334 }; 335 336 static const uint32_t supported_drm_formats[] = { 337 DRM_FORMAT_ARGB8888, 338 DRM_FORMAT_XRGB8888, 339 DRM_FORMAT_RGB888, 340 DRM_FORMAT_RGB565, 341 }; 342 343 int meson_plane_create(struct meson_drm *priv) 344 { 345 struct meson_plane *meson_plane; 346 struct drm_plane *plane; 347 348 meson_plane = devm_kzalloc(priv->drm->dev, sizeof(*meson_plane), 349 GFP_KERNEL); 350 if (!meson_plane) 351 return -ENOMEM; 352 353 meson_plane->priv = priv; 354 plane = &meson_plane->base; 355 356 drm_universal_plane_init(priv->drm, plane, 0xFF, 357 &meson_plane_funcs, 358 supported_drm_formats, 359 ARRAY_SIZE(supported_drm_formats), 360 NULL, 361 DRM_PLANE_TYPE_PRIMARY, "meson_primary_plane"); 362 363 drm_plane_helper_add(plane, &meson_plane_helper_funcs); 364 365 priv->primary_plane = plane; 366 367 return 0; 368 } 369