1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Allwinner DE2 display driver 4 * 5 * (C) Copyright 2017 Jernej Skrabec <jernej.skrabec@siol.net> 6 */ 7 8 #include <common.h> 9 #include <display.h> 10 #include <dm.h> 11 #include <edid.h> 12 #include <efi_loader.h> 13 #include <fdtdec.h> 14 #include <fdt_support.h> 15 #include <video.h> 16 #include <asm/global_data.h> 17 #include <asm/io.h> 18 #include <asm/arch/clock.h> 19 #include <asm/arch/display2.h> 20 #include <dm/device-internal.h> 21 #include <dm/uclass-internal.h> 22 #include "simplefb_common.h" 23 24 DECLARE_GLOBAL_DATA_PTR; 25 26 enum { 27 /* Maximum LCD size we support */ 28 LCD_MAX_WIDTH = 3840, 29 LCD_MAX_HEIGHT = 2160, 30 LCD_MAX_LOG2_BPP = VIDEO_BPP32, 31 }; 32 33 static void sunxi_de2_composer_init(void) 34 { 35 struct sunxi_ccm_reg * const ccm = 36 (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; 37 38 #ifdef CONFIG_MACH_SUN50I 39 u32 reg_value; 40 41 /* set SRAM for video use (A64 only) */ 42 reg_value = readl(SUNXI_SRAMC_BASE + 0x04); 43 reg_value &= ~(0x01 << 24); 44 writel(reg_value, SUNXI_SRAMC_BASE + 0x04); 45 #endif 46 47 clock_set_pll10(432000000); 48 49 /* Set DE parent to pll10 */ 50 clrsetbits_le32(&ccm->de_clk_cfg, CCM_DE2_CTRL_PLL_MASK, 51 CCM_DE2_CTRL_PLL10); 52 53 /* Set ahb gating to pass */ 54 setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_DE); 55 setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_DE); 56 57 /* Clock on */ 58 setbits_le32(&ccm->de_clk_cfg, CCM_DE2_CTRL_GATE); 59 } 60 61 static void sunxi_de2_mode_set(int mux, const struct display_timing *mode, 62 int bpp, ulong address, bool is_composite) 63 { 64 ulong de_mux_base = (mux == 0) ? 65 SUNXI_DE2_MUX0_BASE : SUNXI_DE2_MUX1_BASE; 66 struct de_clk * const de_clk_regs = 67 (struct de_clk *)(SUNXI_DE2_BASE); 68 struct de_glb * const de_glb_regs = 69 (struct de_glb *)(de_mux_base + 70 SUNXI_DE2_MUX_GLB_REGS); 71 struct de_bld * const de_bld_regs = 72 (struct de_bld *)(de_mux_base + 73 SUNXI_DE2_MUX_BLD_REGS); 74 struct de_ui * const de_ui_regs = 75 (struct de_ui *)(de_mux_base + 76 SUNXI_DE2_MUX_CHAN_REGS + 77 SUNXI_DE2_MUX_CHAN_SZ * 1); 78 struct de_csc * const de_csc_regs = 79 (struct de_csc *)(de_mux_base + 80 SUNXI_DE2_MUX_DCSC_REGS); 81 u32 size = SUNXI_DE2_WH(mode->hactive.typ, mode->vactive.typ); 82 int channel; 83 u32 format; 84 85 /* enable clock */ 86 #ifdef CONFIG_MACH_SUN8I_H3 87 setbits_le32(&de_clk_regs->rst_cfg, (mux == 0) ? 1 : 4); 88 #else 89 setbits_le32(&de_clk_regs->rst_cfg, BIT(mux)); 90 #endif 91 setbits_le32(&de_clk_regs->gate_cfg, BIT(mux)); 92 setbits_le32(&de_clk_regs->bus_cfg, BIT(mux)); 93 94 clrbits_le32(&de_clk_regs->sel_cfg, 1); 95 96 writel(SUNXI_DE2_MUX_GLB_CTL_EN, &de_glb_regs->ctl); 97 writel(0, &de_glb_regs->status); 98 writel(1, &de_glb_regs->dbuff); 99 writel(size, &de_glb_regs->size); 100 101 for (channel = 0; channel < 4; channel++) { 102 void *ch = (void *)(de_mux_base + SUNXI_DE2_MUX_CHAN_REGS + 103 SUNXI_DE2_MUX_CHAN_SZ * channel); 104 memset(ch, 0, (channel == 0) ? 105 sizeof(struct de_vi) : sizeof(struct de_ui)); 106 } 107 memset(de_bld_regs, 0, sizeof(struct de_bld)); 108 109 writel(0x00000101, &de_bld_regs->fcolor_ctl); 110 111 writel(1, &de_bld_regs->route); 112 113 writel(0, &de_bld_regs->premultiply); 114 writel(0xff000000, &de_bld_regs->bkcolor); 115 116 writel(0x03010301, &de_bld_regs->bld_mode[0]); 117 118 writel(size, &de_bld_regs->output_size); 119 writel(mode->flags & DISPLAY_FLAGS_INTERLACED ? 2 : 0, 120 &de_bld_regs->out_ctl); 121 writel(0, &de_bld_regs->ck_ctl); 122 123 writel(0xff000000, &de_bld_regs->attr[0].fcolor); 124 writel(size, &de_bld_regs->attr[0].insize); 125 126 /* Disable all other units */ 127 writel(0, de_mux_base + SUNXI_DE2_MUX_VSU_REGS); 128 writel(0, de_mux_base + SUNXI_DE2_MUX_GSU1_REGS); 129 writel(0, de_mux_base + SUNXI_DE2_MUX_GSU2_REGS); 130 writel(0, de_mux_base + SUNXI_DE2_MUX_GSU3_REGS); 131 writel(0, de_mux_base + SUNXI_DE2_MUX_FCE_REGS); 132 writel(0, de_mux_base + SUNXI_DE2_MUX_BWS_REGS); 133 writel(0, de_mux_base + SUNXI_DE2_MUX_LTI_REGS); 134 writel(0, de_mux_base + SUNXI_DE2_MUX_PEAK_REGS); 135 writel(0, de_mux_base + SUNXI_DE2_MUX_ASE_REGS); 136 writel(0, de_mux_base + SUNXI_DE2_MUX_FCC_REGS); 137 138 if (is_composite) { 139 /* set CSC coefficients */ 140 writel(0x107, &de_csc_regs->coef11); 141 writel(0x204, &de_csc_regs->coef12); 142 writel(0x64, &de_csc_regs->coef13); 143 writel(0x4200, &de_csc_regs->coef14); 144 writel(0x1f68, &de_csc_regs->coef21); 145 writel(0x1ed6, &de_csc_regs->coef22); 146 writel(0x1c2, &de_csc_regs->coef23); 147 writel(0x20200, &de_csc_regs->coef24); 148 writel(0x1c2, &de_csc_regs->coef31); 149 writel(0x1e87, &de_csc_regs->coef32); 150 writel(0x1fb7, &de_csc_regs->coef33); 151 writel(0x20200, &de_csc_regs->coef34); 152 153 /* enable CSC unit */ 154 writel(1, &de_csc_regs->csc_ctl); 155 } else { 156 writel(0, &de_csc_regs->csc_ctl); 157 } 158 159 switch (bpp) { 160 case 16: 161 format = SUNXI_DE2_UI_CFG_ATTR_FMT(SUNXI_DE2_FORMAT_RGB_565); 162 break; 163 case 32: 164 default: 165 format = SUNXI_DE2_UI_CFG_ATTR_FMT(SUNXI_DE2_FORMAT_XRGB_8888); 166 break; 167 } 168 169 writel(SUNXI_DE2_UI_CFG_ATTR_EN | format, &de_ui_regs->cfg[0].attr); 170 writel(size, &de_ui_regs->cfg[0].size); 171 writel(0, &de_ui_regs->cfg[0].coord); 172 writel((bpp / 8) * mode->hactive.typ, &de_ui_regs->cfg[0].pitch); 173 writel(address, &de_ui_regs->cfg[0].top_laddr); 174 writel(size, &de_ui_regs->ovl_size); 175 176 /* apply settings */ 177 writel(1, &de_glb_regs->dbuff); 178 } 179 180 static int sunxi_de2_init(struct udevice *dev, ulong fbbase, 181 enum video_log2_bpp l2bpp, 182 struct udevice *disp, int mux, bool is_composite) 183 { 184 struct video_priv *uc_priv = dev_get_uclass_priv(dev); 185 struct display_timing timing; 186 struct display_plat *disp_uc_plat; 187 int ret; 188 189 disp_uc_plat = dev_get_uclass_platdata(disp); 190 debug("Using device '%s', disp_uc_priv=%p\n", disp->name, disp_uc_plat); 191 if (display_in_use(disp)) { 192 debug(" - device in use\n"); 193 return -EBUSY; 194 } 195 196 disp_uc_plat->source_id = mux; 197 198 ret = device_probe(disp); 199 if (ret) { 200 debug("%s: device '%s' display won't probe (ret=%d)\n", 201 __func__, dev->name, ret); 202 return ret; 203 } 204 205 ret = display_read_timing(disp, &timing); 206 if (ret) { 207 debug("%s: Failed to read timings\n", __func__); 208 return ret; 209 } 210 211 sunxi_de2_composer_init(); 212 sunxi_de2_mode_set(mux, &timing, 1 << l2bpp, fbbase, is_composite); 213 214 ret = display_enable(disp, 1 << l2bpp, &timing); 215 if (ret) { 216 debug("%s: Failed to enable display\n", __func__); 217 return ret; 218 } 219 220 uc_priv->xsize = timing.hactive.typ; 221 uc_priv->ysize = timing.vactive.typ; 222 uc_priv->bpix = l2bpp; 223 debug("fb=%lx, size=%d %d\n", fbbase, uc_priv->xsize, uc_priv->ysize); 224 225 #ifdef CONFIG_EFI_LOADER 226 efi_add_memory_map(fbbase, 227 ALIGN(timing.hactive.typ * timing.vactive.typ * 228 (1 << l2bpp) / 8, EFI_PAGE_SIZE) >> EFI_PAGE_SHIFT, 229 EFI_RESERVED_MEMORY_TYPE, false); 230 #endif 231 232 return 0; 233 } 234 235 static int sunxi_de2_probe(struct udevice *dev) 236 { 237 struct video_uc_platdata *plat = dev_get_uclass_platdata(dev); 238 struct udevice *disp; 239 int ret; 240 241 /* Before relocation we don't need to do anything */ 242 if (!(gd->flags & GD_FLG_RELOC)) 243 return 0; 244 245 ret = uclass_find_device_by_name(UCLASS_DISPLAY, 246 "sunxi_lcd", &disp); 247 if (!ret) { 248 int mux; 249 250 mux = 0; 251 252 ret = sunxi_de2_init(dev, plat->base, VIDEO_BPP32, disp, mux, 253 false); 254 if (!ret) { 255 video_set_flush_dcache(dev, 1); 256 return 0; 257 } 258 } 259 260 debug("%s: lcd display not found (ret=%d)\n", __func__, ret); 261 262 ret = uclass_find_device_by_name(UCLASS_DISPLAY, 263 "sunxi_dw_hdmi", &disp); 264 if (!ret) { 265 int mux; 266 if (IS_ENABLED(CONFIG_MACH_SUNXI_H3_H5)) 267 mux = 0; 268 else 269 mux = 1; 270 271 ret = sunxi_de2_init(dev, plat->base, VIDEO_BPP32, disp, mux, 272 false); 273 if (!ret) { 274 video_set_flush_dcache(dev, 1); 275 return 0; 276 } 277 } 278 279 debug("%s: hdmi display not found (ret=%d)\n", __func__, ret); 280 281 ret = uclass_find_device_by_name(UCLASS_DISPLAY, 282 "sunxi_tve", &disp); 283 if (ret) { 284 debug("%s: tv not found (ret=%d)\n", __func__, ret); 285 return ret; 286 } 287 288 ret = sunxi_de2_init(dev, plat->base, VIDEO_BPP32, disp, 1, true); 289 if (ret) 290 return ret; 291 292 video_set_flush_dcache(dev, 1); 293 294 return 0; 295 } 296 297 static int sunxi_de2_bind(struct udevice *dev) 298 { 299 struct video_uc_platdata *plat = dev_get_uclass_platdata(dev); 300 301 plat->size = LCD_MAX_WIDTH * LCD_MAX_HEIGHT * 302 (1 << LCD_MAX_LOG2_BPP) / 8; 303 304 return 0; 305 } 306 307 static const struct video_ops sunxi_de2_ops = { 308 }; 309 310 U_BOOT_DRIVER(sunxi_de2) = { 311 .name = "sunxi_de2", 312 .id = UCLASS_VIDEO, 313 .ops = &sunxi_de2_ops, 314 .bind = sunxi_de2_bind, 315 .probe = sunxi_de2_probe, 316 .flags = DM_FLAG_PRE_RELOC, 317 }; 318 319 U_BOOT_DEVICE(sunxi_de2) = { 320 .name = "sunxi_de2" 321 }; 322 323 /* 324 * Simplefb support. 325 */ 326 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_VIDEO_DT_SIMPLEFB) 327 int sunxi_simplefb_setup(void *blob) 328 { 329 struct udevice *de2, *hdmi, *lcd; 330 struct video_priv *de2_priv; 331 struct video_uc_platdata *de2_plat; 332 int mux; 333 int offset, ret; 334 u64 start, size; 335 const char *pipeline = NULL; 336 337 debug("Setting up simplefb\n"); 338 339 if (IS_ENABLED(CONFIG_MACH_SUNXI_H3_H5)) 340 mux = 0; 341 else 342 mux = 1; 343 344 /* Skip simplefb setting if DE2 / HDMI is not present */ 345 ret = uclass_find_device_by_name(UCLASS_VIDEO, 346 "sunxi_de2", &de2); 347 if (ret) { 348 debug("DE2 not present\n"); 349 return 0; 350 } else if (!device_active(de2)) { 351 debug("DE2 present but not probed\n"); 352 return 0; 353 } 354 355 ret = uclass_find_device_by_name(UCLASS_DISPLAY, 356 "sunxi_dw_hdmi", &hdmi); 357 if (ret) { 358 debug("HDMI not present\n"); 359 } else if (device_active(hdmi)) { 360 if (mux == 0) 361 pipeline = "mixer0-lcd0-hdmi"; 362 else 363 pipeline = "mixer1-lcd1-hdmi"; 364 } else { 365 debug("HDMI present but not probed\n"); 366 } 367 368 ret = uclass_find_device_by_name(UCLASS_DISPLAY, 369 "sunxi_lcd", &lcd); 370 if (ret) 371 debug("LCD not present\n"); 372 else if (device_active(lcd)) 373 pipeline = "mixer0-lcd0"; 374 else 375 debug("LCD present but not probed\n"); 376 377 if (!pipeline) { 378 debug("No active display present\n"); 379 return 0; 380 } 381 382 de2_priv = dev_get_uclass_priv(de2); 383 de2_plat = dev_get_uclass_platdata(de2); 384 385 offset = sunxi_simplefb_fdt_match(blob, pipeline); 386 if (offset < 0) { 387 eprintf("Cannot setup simplefb: node not found\n"); 388 return 0; /* Keep older kernels working */ 389 } 390 391 start = gd->bd->bi_dram[0].start; 392 size = de2_plat->base - start; 393 ret = fdt_fixup_memory_banks(blob, &start, &size, 1); 394 if (ret) { 395 eprintf("Cannot setup simplefb: Error reserving memory\n"); 396 return ret; 397 } 398 399 ret = fdt_setup_simplefb_node(blob, offset, de2_plat->base, 400 de2_priv->xsize, de2_priv->ysize, 401 VNBYTES(de2_priv->bpix) * de2_priv->xsize, 402 "x8r8g8b8"); 403 if (ret) 404 eprintf("Cannot setup simplefb: Error setting properties\n"); 405 406 return ret; 407 } 408 #endif /* CONFIG_OF_BOARD_SETUP && CONFIG_VIDEO_DT_SIMPLEFB */ 409