1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2009 4 * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de> 5 * Copyright (C) 2011 6 * HALE electronic GmbH, <helmut.raiger@hale.at> 7 */ 8 #include <common.h> 9 #include <malloc.h> 10 #include <video_fb.h> 11 12 #include <asm/arch/imx-regs.h> 13 #include <asm/arch/clock.h> 14 #include <linux/errno.h> 15 #include <asm/io.h> 16 17 #include "videomodes.h" 18 19 /* this might need panel specific set-up as-well */ 20 #define IF_CONF 0 21 22 /* -------------- controller specific stuff -------------- */ 23 24 /* IPU DMA Controller channel definitions. */ 25 enum ipu_channel { 26 IDMAC_IC_0 = 0, /* IC (encoding task) to memory */ 27 IDMAC_IC_1 = 1, /* IC (viewfinder task) to memory */ 28 IDMAC_ADC_0 = 1, 29 IDMAC_IC_2 = 2, 30 IDMAC_ADC_1 = 2, 31 IDMAC_IC_3 = 3, 32 IDMAC_IC_4 = 4, 33 IDMAC_IC_5 = 5, 34 IDMAC_IC_6 = 6, 35 IDMAC_IC_7 = 7, /* IC (sensor data) to memory */ 36 IDMAC_IC_8 = 8, 37 IDMAC_IC_9 = 9, 38 IDMAC_IC_10 = 10, 39 IDMAC_IC_11 = 11, 40 IDMAC_IC_12 = 12, 41 IDMAC_IC_13 = 13, 42 IDMAC_SDC_0 = 14, /* Background synchronous display data */ 43 IDMAC_SDC_1 = 15, /* Foreground data (overlay) */ 44 IDMAC_SDC_2 = 16, 45 IDMAC_SDC_3 = 17, 46 IDMAC_ADC_2 = 18, 47 IDMAC_ADC_3 = 19, 48 IDMAC_ADC_4 = 20, 49 IDMAC_ADC_5 = 21, 50 IDMAC_ADC_6 = 22, 51 IDMAC_ADC_7 = 23, 52 IDMAC_PF_0 = 24, 53 IDMAC_PF_1 = 25, 54 IDMAC_PF_2 = 26, 55 IDMAC_PF_3 = 27, 56 IDMAC_PF_4 = 28, 57 IDMAC_PF_5 = 29, 58 IDMAC_PF_6 = 30, 59 IDMAC_PF_7 = 31, 60 }; 61 62 /* More formats can be copied from the Linux driver if needed */ 63 enum pixel_fmt { 64 /* 2 bytes */ 65 IPU_PIX_FMT_RGB565, 66 IPU_PIX_FMT_RGB666, 67 IPU_PIX_FMT_BGR666, 68 /* 3 bytes */ 69 IPU_PIX_FMT_RGB24, 70 }; 71 72 struct pixel_fmt_cfg { 73 u32 b0; 74 u32 b1; 75 u32 b2; 76 u32 acc; 77 }; 78 79 static struct pixel_fmt_cfg fmt_cfg[] = { 80 [IPU_PIX_FMT_RGB24] = { 81 0x1600AAAA, 0x00E05555, 0x00070000, 3, 82 }, 83 [IPU_PIX_FMT_RGB666] = { 84 0x0005000F, 0x000B000F, 0x0011000F, 1, 85 }, 86 [IPU_PIX_FMT_BGR666] = { 87 0x0011000F, 0x000B000F, 0x0005000F, 1, 88 }, 89 [IPU_PIX_FMT_RGB565] = { 90 0x0004003F, 0x000A000F, 0x000F003F, 1, 91 } 92 }; 93 94 enum ipu_panel { 95 IPU_PANEL_SHARP_TFT, 96 IPU_PANEL_TFT, 97 }; 98 99 /* IPU Common registers */ 100 /* IPU_CONF and its bits already defined in imx-regs.h */ 101 #define IPU_CHA_BUF0_RDY (0x04 + IPU_BASE) 102 #define IPU_CHA_BUF1_RDY (0x08 + IPU_BASE) 103 #define IPU_CHA_DB_MODE_SEL (0x0C + IPU_BASE) 104 #define IPU_CHA_CUR_BUF (0x10 + IPU_BASE) 105 #define IPU_FS_PROC_FLOW (0x14 + IPU_BASE) 106 #define IPU_FS_DISP_FLOW (0x18 + IPU_BASE) 107 #define IPU_TASKS_STAT (0x1C + IPU_BASE) 108 #define IPU_IMA_ADDR (0x20 + IPU_BASE) 109 #define IPU_IMA_DATA (0x24 + IPU_BASE) 110 #define IPU_INT_CTRL_1 (0x28 + IPU_BASE) 111 #define IPU_INT_CTRL_2 (0x2C + IPU_BASE) 112 #define IPU_INT_CTRL_3 (0x30 + IPU_BASE) 113 #define IPU_INT_CTRL_4 (0x34 + IPU_BASE) 114 #define IPU_INT_CTRL_5 (0x38 + IPU_BASE) 115 #define IPU_INT_STAT_1 (0x3C + IPU_BASE) 116 #define IPU_INT_STAT_2 (0x40 + IPU_BASE) 117 #define IPU_INT_STAT_3 (0x44 + IPU_BASE) 118 #define IPU_INT_STAT_4 (0x48 + IPU_BASE) 119 #define IPU_INT_STAT_5 (0x4C + IPU_BASE) 120 #define IPU_BRK_CTRL_1 (0x50 + IPU_BASE) 121 #define IPU_BRK_CTRL_2 (0x54 + IPU_BASE) 122 #define IPU_BRK_STAT (0x58 + IPU_BASE) 123 #define IPU_DIAGB_CTRL (0x5C + IPU_BASE) 124 125 /* Image Converter Registers */ 126 #define IC_CONF (0x88 + IPU_BASE) 127 #define IC_PRP_ENC_RSC (0x8C + IPU_BASE) 128 #define IC_PRP_VF_RSC (0x90 + IPU_BASE) 129 #define IC_PP_RSC (0x94 + IPU_BASE) 130 #define IC_CMBP_1 (0x98 + IPU_BASE) 131 #define IC_CMBP_2 (0x9C + IPU_BASE) 132 #define PF_CONF (0xA0 + IPU_BASE) 133 #define IDMAC_CONF (0xA4 + IPU_BASE) 134 #define IDMAC_CHA_EN (0xA8 + IPU_BASE) 135 #define IDMAC_CHA_PRI (0xAC + IPU_BASE) 136 #define IDMAC_CHA_BUSY (0xB0 + IPU_BASE) 137 138 /* Image Converter Register bits */ 139 #define IC_CONF_PRPENC_EN 0x00000001 140 #define IC_CONF_PRPENC_CSC1 0x00000002 141 #define IC_CONF_PRPENC_ROT_EN 0x00000004 142 #define IC_CONF_PRPVF_EN 0x00000100 143 #define IC_CONF_PRPVF_CSC1 0x00000200 144 #define IC_CONF_PRPVF_CSC2 0x00000400 145 #define IC_CONF_PRPVF_CMB 0x00000800 146 #define IC_CONF_PRPVF_ROT_EN 0x00001000 147 #define IC_CONF_PP_EN 0x00010000 148 #define IC_CONF_PP_CSC1 0x00020000 149 #define IC_CONF_PP_CSC2 0x00040000 150 #define IC_CONF_PP_CMB 0x00080000 151 #define IC_CONF_PP_ROT_EN 0x00100000 152 #define IC_CONF_IC_GLB_LOC_A 0x10000000 153 #define IC_CONF_KEY_COLOR_EN 0x20000000 154 #define IC_CONF_RWS_EN 0x40000000 155 #define IC_CONF_CSI_MEM_WR_EN 0x80000000 156 157 /* SDC Registers */ 158 #define SDC_COM_CONF (0xB4 + IPU_BASE) 159 #define SDC_GW_CTRL (0xB8 + IPU_BASE) 160 #define SDC_FG_POS (0xBC + IPU_BASE) 161 #define SDC_BG_POS (0xC0 + IPU_BASE) 162 #define SDC_CUR_POS (0xC4 + IPU_BASE) 163 #define SDC_PWM_CTRL (0xC8 + IPU_BASE) 164 #define SDC_CUR_MAP (0xCC + IPU_BASE) 165 #define SDC_HOR_CONF (0xD0 + IPU_BASE) 166 #define SDC_VER_CONF (0xD4 + IPU_BASE) 167 #define SDC_SHARP_CONF_1 (0xD8 + IPU_BASE) 168 #define SDC_SHARP_CONF_2 (0xDC + IPU_BASE) 169 170 /* Register bits */ 171 #define SDC_COM_TFT_COLOR 0x00000001UL 172 #define SDC_COM_FG_EN 0x00000010UL 173 #define SDC_COM_GWSEL 0x00000020UL 174 #define SDC_COM_GLB_A 0x00000040UL 175 #define SDC_COM_KEY_COLOR_G 0x00000080UL 176 #define SDC_COM_BG_EN 0x00000200UL 177 #define SDC_COM_SHARP 0x00001000UL 178 179 #define SDC_V_SYNC_WIDTH_L 0x00000001UL 180 181 /* Display Interface registers */ 182 #define DI_DISP_IF_CONF (0x0124 + IPU_BASE) 183 #define DI_DISP_SIG_POL (0x0128 + IPU_BASE) 184 #define DI_SER_DISP1_CONF (0x012C + IPU_BASE) 185 #define DI_SER_DISP2_CONF (0x0130 + IPU_BASE) 186 #define DI_HSP_CLK_PER (0x0134 + IPU_BASE) 187 #define DI_DISP0_TIME_CONF_1 (0x0138 + IPU_BASE) 188 #define DI_DISP0_TIME_CONF_2 (0x013C + IPU_BASE) 189 #define DI_DISP0_TIME_CONF_3 (0x0140 + IPU_BASE) 190 #define DI_DISP1_TIME_CONF_1 (0x0144 + IPU_BASE) 191 #define DI_DISP1_TIME_CONF_2 (0x0148 + IPU_BASE) 192 #define DI_DISP1_TIME_CONF_3 (0x014C + IPU_BASE) 193 #define DI_DISP2_TIME_CONF_1 (0x0150 + IPU_BASE) 194 #define DI_DISP2_TIME_CONF_2 (0x0154 + IPU_BASE) 195 #define DI_DISP2_TIME_CONF_3 (0x0158 + IPU_BASE) 196 #define DI_DISP3_TIME_CONF (0x015C + IPU_BASE) 197 #define DI_DISP0_DB0_MAP (0x0160 + IPU_BASE) 198 #define DI_DISP0_DB1_MAP (0x0164 + IPU_BASE) 199 #define DI_DISP0_DB2_MAP (0x0168 + IPU_BASE) 200 #define DI_DISP0_CB0_MAP (0x016C + IPU_BASE) 201 #define DI_DISP0_CB1_MAP (0x0170 + IPU_BASE) 202 #define DI_DISP0_CB2_MAP (0x0174 + IPU_BASE) 203 #define DI_DISP1_DB0_MAP (0x0178 + IPU_BASE) 204 #define DI_DISP1_DB1_MAP (0x017C + IPU_BASE) 205 #define DI_DISP1_DB2_MAP (0x0180 + IPU_BASE) 206 #define DI_DISP1_CB0_MAP (0x0184 + IPU_BASE) 207 #define DI_DISP1_CB1_MAP (0x0188 + IPU_BASE) 208 #define DI_DISP1_CB2_MAP (0x018C + IPU_BASE) 209 #define DI_DISP2_DB0_MAP (0x0190 + IPU_BASE) 210 #define DI_DISP2_DB1_MAP (0x0194 + IPU_BASE) 211 #define DI_DISP2_DB2_MAP (0x0198 + IPU_BASE) 212 #define DI_DISP2_CB0_MAP (0x019C + IPU_BASE) 213 #define DI_DISP2_CB1_MAP (0x01A0 + IPU_BASE) 214 #define DI_DISP2_CB2_MAP (0x01A4 + IPU_BASE) 215 #define DI_DISP3_B0_MAP (0x01A8 + IPU_BASE) 216 #define DI_DISP3_B1_MAP (0x01AC + IPU_BASE) 217 #define DI_DISP3_B2_MAP (0x01B0 + IPU_BASE) 218 #define DI_DISP_ACC_CC (0x01B4 + IPU_BASE) 219 #define DI_DISP_LLA_CONF (0x01B8 + IPU_BASE) 220 #define DI_DISP_LLA_DATA (0x01BC + IPU_BASE) 221 222 /* DI_DISP_SIG_POL bits */ 223 #define DI_D3_VSYNC_POL (1 << 28) 224 #define DI_D3_HSYNC_POL (1 << 27) 225 #define DI_D3_DRDY_SHARP_POL (1 << 26) 226 #define DI_D3_CLK_POL (1 << 25) 227 #define DI_D3_DATA_POL (1 << 24) 228 229 /* DI_DISP_IF_CONF bits */ 230 #define DI_D3_CLK_IDLE (1 << 26) 231 #define DI_D3_CLK_SEL (1 << 25) 232 #define DI_D3_DATAMSK (1 << 24) 233 234 #define IOMUX_PADNUM_MASK 0x1ff 235 #define IOMUX_GPIONUM_SHIFT 9 236 #define IOMUX_GPIONUM_MASK (0xff << IOMUX_GPIONUM_SHIFT) 237 238 #define IOMUX_PIN(gpionum, padnum) ((padnum) & IOMUX_PADNUM_MASK) 239 240 #define IOMUX_MODE_L(pin, mode) IOMUX_MODE(((pin) + 0xc) ^ 3, mode) 241 242 struct chan_param_mem_planar { 243 /* Word 0 */ 244 u32 xv:10; 245 u32 yv:10; 246 u32 xb:12; 247 248 u32 yb:12; 249 u32 res1:2; 250 u32 nsb:1; 251 u32 lnpb:6; 252 u32 ubo_l:11; 253 254 u32 ubo_h:15; 255 u32 vbo_l:17; 256 257 u32 vbo_h:9; 258 u32 res2:3; 259 u32 fw:12; 260 u32 fh_l:8; 261 262 u32 fh_h:4; 263 u32 res3:28; 264 265 /* Word 1 */ 266 u32 eba0; 267 268 u32 eba1; 269 270 u32 bpp:3; 271 u32 sl:14; 272 u32 pfs:3; 273 u32 bam:3; 274 u32 res4:2; 275 u32 npb:6; 276 u32 res5:1; 277 278 u32 sat:2; 279 u32 res6:30; 280 } __attribute__ ((packed)); 281 282 struct chan_param_mem_interleaved { 283 /* Word 0 */ 284 u32 xv:10; 285 u32 yv:10; 286 u32 xb:12; 287 288 u32 yb:12; 289 u32 sce:1; 290 u32 res1:1; 291 u32 nsb:1; 292 u32 lnpb:6; 293 u32 sx:10; 294 u32 sy_l:1; 295 296 u32 sy_h:9; 297 u32 ns:10; 298 u32 sm:10; 299 u32 sdx_l:3; 300 301 u32 sdx_h:2; 302 u32 sdy:5; 303 u32 sdrx:1; 304 u32 sdry:1; 305 u32 sdr1:1; 306 u32 res2:2; 307 u32 fw:12; 308 u32 fh_l:8; 309 310 u32 fh_h:4; 311 u32 res3:28; 312 313 /* Word 1 */ 314 u32 eba0; 315 316 u32 eba1; 317 318 u32 bpp:3; 319 u32 sl:14; 320 u32 pfs:3; 321 u32 bam:3; 322 u32 res4:2; 323 u32 npb:6; 324 u32 res5:1; 325 326 u32 sat:2; 327 u32 scc:1; 328 u32 ofs0:5; 329 u32 ofs1:5; 330 u32 ofs2:5; 331 u32 ofs3:5; 332 u32 wid0:3; 333 u32 wid1:3; 334 u32 wid2:3; 335 336 u32 wid3:3; 337 u32 dec_sel:1; 338 u32 res6:28; 339 } __attribute__ ((packed)); 340 341 union chan_param_mem { 342 struct chan_param_mem_planar pp; 343 struct chan_param_mem_interleaved ip; 344 }; 345 346 /* graphics setup */ 347 static GraphicDevice panel; 348 static struct ctfb_res_modes *mode; 349 static struct ctfb_res_modes var_mode; 350 351 /* 352 * sdc_init_panel() - initialize a synchronous LCD panel. 353 * @width: width of panel in pixels. 354 * @height: height of panel in pixels. 355 * @di_setup: pixel format of the frame buffer 356 * @di_panel: either SHARP or normal TFT 357 * @return: 0 on success or negative error code on failure. 358 */ sdc_init_panel(u16 width,u16 height,enum pixel_fmt di_setup,enum ipu_panel di_panel)359 static int sdc_init_panel(u16 width, u16 height, 360 enum pixel_fmt di_setup, enum ipu_panel di_panel) 361 { 362 u32 reg, div; 363 uint32_t old_conf; 364 int clock; 365 366 debug("%s(width=%d, height=%d)\n", __func__, width, height); 367 368 /* Init clocking, the IPU receives its clock from the hsp divder */ 369 clock = mxc_get_clock(MXC_IPU_CLK); 370 if (clock < 0) 371 return -EACCES; 372 373 /* Init panel size and blanking periods */ 374 reg = width + mode->left_margin + mode->right_margin - 1; 375 if (reg > 1023) { 376 printf("mx3fb: Display width too large, coerced to 1023!"); 377 reg = 1023; 378 } 379 reg = ((mode->hsync_len - 1) << 26) | (reg << 16); 380 writel(reg, SDC_HOR_CONF); 381 382 reg = height + mode->upper_margin + mode->lower_margin - 1; 383 if (reg > 1023) { 384 printf("mx3fb: Display height too large, coerced to 1023!"); 385 reg = 1023; 386 } 387 reg = ((mode->vsync_len - 1) << 26) | SDC_V_SYNC_WIDTH_L | (reg << 16); 388 writel(reg, SDC_VER_CONF); 389 390 switch (di_panel) { 391 case IPU_PANEL_SHARP_TFT: 392 writel(0x00FD0102L, SDC_SHARP_CONF_1); 393 writel(0x00F500F4L, SDC_SHARP_CONF_2); 394 writel(SDC_COM_SHARP | SDC_COM_TFT_COLOR, SDC_COM_CONF); 395 /* TODO: probably IF_CONF must be adapted (see below)! */ 396 break; 397 case IPU_PANEL_TFT: 398 writel(SDC_COM_TFT_COLOR, SDC_COM_CONF); 399 break; 400 default: 401 return -EINVAL; 402 } 403 404 /* 405 * Calculate divider: The fractional part is 4 bits so simply 406 * multiple by 2^4 to get it. 407 * 408 * Opposed to the kernel driver mode->pixclock is the time of one 409 * pixel in pico seconds, so: 410 * pixel_clk = 1e12 / mode->pixclock 411 * div = ipu_clk * 16 / pixel_clk 412 * leads to: 413 * div = ipu_clk * 16 / (1e12 / mode->pixclock) 414 * or: 415 * div = ipu_clk * 16 * mode->pixclock / 1e12 416 * 417 * To avoid integer overflows this is split into 2 shifts and 418 * one divide with sufficient accuracy: 419 * 16*1024*128*476837 = 0.9999996682e12 420 */ 421 div = ((clock/1024) * (mode->pixclock/128)) / 476837; 422 debug("hsp_clk is %d, div=%d\n", clock, div); 423 /* coerce to not less than 4.0, not more than 255.9375 */ 424 if (div < 0x40) 425 div = 0x40; 426 else if (div > 0xFFF) 427 div = 0xFFF; 428 /* DISP3_IF_CLK_DOWN_WR is half the divider value and 2 less 429 * fraction bits. Subtract 1 extra from DISP3_IF_CLK_DOWN_WR 430 * based on timing debug DISP3_IF_CLK_UP_WR is 0 431 */ 432 writel((((div / 8) - 1) << 22) | div, DI_DISP3_TIME_CONF); 433 434 /* DI settings for display 3: clock idle (bit 26) during vsync */ 435 old_conf = readl(DI_DISP_IF_CONF) & 0x78FFFFFF; 436 writel(old_conf | IF_CONF, DI_DISP_IF_CONF); 437 438 /* only set display 3 polarity bits */ 439 old_conf = readl(DI_DISP_SIG_POL) & 0xE0FFFFFF; 440 writel(old_conf | mode->sync, DI_DISP_SIG_POL); 441 442 writel(fmt_cfg[di_setup].b0, DI_DISP3_B0_MAP); 443 writel(fmt_cfg[di_setup].b1, DI_DISP3_B1_MAP); 444 writel(fmt_cfg[di_setup].b2, DI_DISP3_B2_MAP); 445 writel(readl(DI_DISP_ACC_CC) | 446 ((fmt_cfg[di_setup].acc - 1) << 12), DI_DISP_ACC_CC); 447 448 debug("DI_DISP_IF_CONF = 0x%08X\n", readl(DI_DISP_IF_CONF)); 449 debug("DI_DISP_SIG_POL = 0x%08X\n", readl(DI_DISP_SIG_POL)); 450 debug("DI_DISP3_TIME_CONF = 0x%08X\n", readl(DI_DISP3_TIME_CONF)); 451 debug("SDC_HOR_CONF = 0x%08X\n", readl(SDC_HOR_CONF)); 452 debug("SDC_VER_CONF = 0x%08X\n", readl(SDC_VER_CONF)); 453 454 return 0; 455 } 456 ipu_ch_param_set_size(union chan_param_mem * params,uint pixelfmt,uint16_t width,uint16_t height,uint16_t stride)457 static void ipu_ch_param_set_size(union chan_param_mem *params, 458 uint pixelfmt, uint16_t width, 459 uint16_t height, uint16_t stride) 460 { 461 debug("%s(pixelfmt=%d, width=%d, height=%d, stride=%d)\n", 462 __func__, pixelfmt, width, height, stride); 463 464 params->pp.fw = width - 1; 465 params->pp.fh_l = height - 1; 466 params->pp.fh_h = (height - 1) >> 8; 467 params->pp.sl = stride - 1; 468 469 /* See above, for further formats see the Linux driver */ 470 switch (pixelfmt) { 471 case GDF_16BIT_565RGB: 472 params->ip.bpp = 2; 473 params->ip.pfs = 4; 474 params->ip.npb = 7; 475 params->ip.sat = 2; /* SAT = 32-bit access */ 476 params->ip.ofs0 = 0; /* Red bit offset */ 477 params->ip.ofs1 = 5; /* Green bit offset */ 478 params->ip.ofs2 = 11; /* Blue bit offset */ 479 params->ip.ofs3 = 16; /* Alpha bit offset */ 480 params->ip.wid0 = 4; /* Red bit width - 1 */ 481 params->ip.wid1 = 5; /* Green bit width - 1 */ 482 params->ip.wid2 = 4; /* Blue bit width - 1 */ 483 break; 484 case GDF_32BIT_X888RGB: 485 params->ip.bpp = 1; /* 24 BPP & RGB PFS */ 486 params->ip.pfs = 4; 487 params->ip.npb = 7; 488 params->ip.sat = 2; /* SAT = 32-bit access */ 489 params->ip.ofs0 = 16; /* Red bit offset */ 490 params->ip.ofs1 = 8; /* Green bit offset */ 491 params->ip.ofs2 = 0; /* Blue bit offset */ 492 params->ip.ofs3 = 24; /* Alpha bit offset */ 493 params->ip.wid0 = 7; /* Red bit width - 1 */ 494 params->ip.wid1 = 7; /* Green bit width - 1 */ 495 params->ip.wid2 = 7; /* Blue bit width - 1 */ 496 break; 497 default: 498 printf("mx3fb: Pixel format not supported!\n"); 499 break; 500 } 501 502 params->pp.nsb = 1; 503 } 504 ipu_ch_param_set_buffer(union chan_param_mem * params,void * buf0,void * buf1)505 static void ipu_ch_param_set_buffer(union chan_param_mem *params, 506 void *buf0, void *buf1) 507 { 508 params->pp.eba0 = (u32)buf0; 509 params->pp.eba1 = (u32)buf1; 510 } 511 ipu_write_param_mem(uint32_t addr,uint32_t * data,uint32_t num_words)512 static void ipu_write_param_mem(uint32_t addr, uint32_t *data, 513 uint32_t num_words) 514 { 515 for (; num_words > 0; num_words--) { 516 writel(addr, IPU_IMA_ADDR); 517 writel(*data++, IPU_IMA_DATA); 518 addr++; 519 if ((addr & 0x7) == 5) { 520 addr &= ~0x7; /* set to word 0 */ 521 addr += 8; /* increment to next row */ 522 } 523 } 524 } 525 dma_param_addr(enum ipu_channel channel)526 static uint32_t dma_param_addr(enum ipu_channel channel) 527 { 528 /* Channel Parameter Memory */ 529 return 0x10000 | (channel << 4); 530 } 531 ipu_init_channel_buffer(enum ipu_channel channel,void * fbmem)532 static void ipu_init_channel_buffer(enum ipu_channel channel, void *fbmem) 533 { 534 union chan_param_mem params = {}; 535 uint32_t reg; 536 uint32_t stride_bytes; 537 538 stride_bytes = (panel.plnSizeX * panel.gdfBytesPP + 3) & ~3; 539 540 debug("%s(channel=%d, fbmem=%p)\n", __func__, channel, fbmem); 541 542 /* Build parameter memory data for DMA channel */ 543 ipu_ch_param_set_size(¶ms, panel.gdfIndex, 544 panel.plnSizeX, panel.plnSizeY, stride_bytes); 545 ipu_ch_param_set_buffer(¶ms, fbmem, NULL); 546 params.pp.bam = 0; 547 /* Some channels (rotation) have restriction on burst length */ 548 549 switch (channel) { 550 case IDMAC_SDC_0: 551 /* In original code only IPU_PIX_FMT_RGB565 was setting burst */ 552 params.pp.npb = 16 - 1; 553 break; 554 default: 555 break; 556 } 557 558 ipu_write_param_mem(dma_param_addr(channel), (uint32_t *)¶ms, 10); 559 560 /* Disable double-buffering */ 561 reg = readl(IPU_CHA_DB_MODE_SEL); 562 reg &= ~(1UL << channel); 563 writel(reg, IPU_CHA_DB_MODE_SEL); 564 } 565 ipu_channel_set_priority(enum ipu_channel channel,int prio)566 static void ipu_channel_set_priority(enum ipu_channel channel, 567 int prio) 568 { 569 u32 reg = readl(IDMAC_CHA_PRI); 570 571 if (prio) 572 reg |= 1UL << channel; 573 else 574 reg &= ~(1UL << channel); 575 576 writel(reg, IDMAC_CHA_PRI); 577 } 578 579 /* 580 * ipu_enable_channel() - enable an IPU channel. 581 * @channel: channel ID. 582 * @return: 0 on success or negative error code on failure. 583 */ ipu_enable_channel(enum ipu_channel channel)584 static int ipu_enable_channel(enum ipu_channel channel) 585 { 586 uint32_t reg; 587 588 /* Reset to buffer 0 */ 589 writel(1UL << channel, IPU_CHA_CUR_BUF); 590 591 switch (channel) { 592 case IDMAC_SDC_0: 593 ipu_channel_set_priority(channel, 1); 594 break; 595 default: 596 break; 597 } 598 599 reg = readl(IDMAC_CHA_EN); 600 writel(reg | (1UL << channel), IDMAC_CHA_EN); 601 602 return 0; 603 } 604 ipu_update_channel_buffer(enum ipu_channel channel,void * buf)605 static int ipu_update_channel_buffer(enum ipu_channel channel, void *buf) 606 { 607 uint32_t reg; 608 609 reg = readl(IPU_CHA_BUF0_RDY); 610 if (reg & (1UL << channel)) 611 return -EACCES; 612 613 /* 44.3.3.1.9 - Row Number 1 (WORD1, offset 0) */ 614 writel(dma_param_addr(channel) + 0x0008UL, IPU_IMA_ADDR); 615 writel((u32)buf, IPU_IMA_DATA); 616 617 return 0; 618 } 619 idmac_tx_submit(enum ipu_channel channel,void * buf)620 static int idmac_tx_submit(enum ipu_channel channel, void *buf) 621 { 622 int ret; 623 624 ipu_init_channel_buffer(channel, buf); 625 626 627 /* ipu_idmac.c::ipu_submit_channel_buffers() */ 628 ret = ipu_update_channel_buffer(channel, buf); 629 if (ret < 0) 630 return ret; 631 632 /* ipu_idmac.c::ipu_select_buffer() */ 633 /* Mark buffer 0 as ready. */ 634 writel(1UL << channel, IPU_CHA_BUF0_RDY); 635 636 637 ret = ipu_enable_channel(channel); 638 return ret; 639 } 640 sdc_enable_channel(void * fbmem)641 static void sdc_enable_channel(void *fbmem) 642 { 643 int ret; 644 u32 reg; 645 646 ret = idmac_tx_submit(IDMAC_SDC_0, fbmem); 647 648 /* mx3fb.c::sdc_fb_init() */ 649 if (ret >= 0) { 650 reg = readl(SDC_COM_CONF); 651 writel(reg | SDC_COM_BG_EN, SDC_COM_CONF); 652 } 653 654 /* 655 * Attention! Without this msleep the channel keeps generating 656 * interrupts. Next sdc_set_brightness() is going to be called 657 * from mx3fb_blank(). 658 */ 659 udelay(2000); 660 } 661 662 /* 663 * mx3fb_set_par() - set framebuffer parameters and change the operating mode. 664 * @return: 0 on success or negative error code on failure. 665 * TODO: currently only 666 and TFT as DI setup supported 666 */ mx3fb_set_par(void)667 static int mx3fb_set_par(void) 668 { 669 int ret; 670 671 ret = sdc_init_panel(panel.plnSizeX, panel.plnSizeY, 672 IPU_PIX_FMT_RGB666, IPU_PANEL_TFT); 673 if (ret < 0) 674 return ret; 675 676 writel((mode->left_margin << 16) | mode->upper_margin, SDC_BG_POS); 677 678 return 0; 679 } 680 ll_disp3_enable(void * base)681 static void ll_disp3_enable(void *base) 682 { 683 u32 reg; 684 685 debug("%s(base=0x%x)\n", __func__, (u32) base); 686 /* pcm037.c::mxc_board_init() */ 687 688 /* Display Interface #3 */ 689 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD0, MUX_CTL_FUNC)); 690 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD1, MUX_CTL_FUNC)); 691 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD2, MUX_CTL_FUNC)); 692 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD3, MUX_CTL_FUNC)); 693 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD4, MUX_CTL_FUNC)); 694 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD5, MUX_CTL_FUNC)); 695 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD6, MUX_CTL_FUNC)); 696 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD7, MUX_CTL_FUNC)); 697 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD8, MUX_CTL_FUNC)); 698 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD9, MUX_CTL_FUNC)); 699 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD10, MUX_CTL_FUNC)); 700 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD11, MUX_CTL_FUNC)); 701 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD12, MUX_CTL_FUNC)); 702 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD13, MUX_CTL_FUNC)); 703 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD14, MUX_CTL_FUNC)); 704 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD15, MUX_CTL_FUNC)); 705 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD16, MUX_CTL_FUNC)); 706 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD17, MUX_CTL_FUNC)); 707 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_VSYNC3, MUX_CTL_FUNC)); 708 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_HSYNC, MUX_CTL_FUNC)); 709 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_FPSHIFT, MUX_CTL_FUNC)); 710 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_DRDY0, MUX_CTL_FUNC)); 711 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_D3_REV, MUX_CTL_FUNC)); 712 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_CONTRAST, MUX_CTL_FUNC)); 713 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_D3_SPL, MUX_CTL_FUNC)); 714 mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_D3_CLS, MUX_CTL_FUNC)); 715 716 717 /* ipu_idmac.c::ipu_probe() */ 718 719 /* Start the clock */ 720 __REG(CCM_CGR1) = __REG(CCM_CGR1) | (3 << 22); 721 722 723 /* ipu_idmac.c::ipu_idmac_init() */ 724 725 /* Service request counter to maximum - shouldn't be needed */ 726 writel(0x00000070, IDMAC_CONF); 727 728 729 /* ipu_idmac.c::ipu_init_channel() */ 730 731 /* Enable IPU sub modules */ 732 reg = readl(IPU_CONF) | IPU_CONF_SDC_EN | IPU_CONF_DI_EN; 733 writel(reg, IPU_CONF); 734 735 736 /* mx3fb.c::init_fb_chan() */ 737 738 /* set Display Interface clock period */ 739 writel(0x00100010L, DI_HSP_CLK_PER); 740 /* Might need to trigger HSP clock change - see 44.3.3.8.5 */ 741 742 743 /* mx3fb.c::sdc_set_brightness() */ 744 745 /* This might be board-specific */ 746 writel(0x03000000UL | 255 << 16, SDC_PWM_CTRL); 747 748 749 /* mx3fb.c::sdc_set_global_alpha() */ 750 751 /* Use global - not per-pixel - Alpha-blending */ 752 reg = readl(SDC_GW_CTRL) & 0x00FFFFFFL; 753 writel(reg | ((uint32_t) 0xff << 24), SDC_GW_CTRL); 754 755 reg = readl(SDC_COM_CONF); 756 writel(reg | SDC_COM_GLB_A, SDC_COM_CONF); 757 758 759 /* mx3fb.c::sdc_set_color_key() */ 760 761 /* Disable colour-keying for background */ 762 reg = readl(SDC_COM_CONF) & 763 ~(SDC_COM_GWSEL | SDC_COM_KEY_COLOR_G); 764 writel(reg, SDC_COM_CONF); 765 766 767 mx3fb_set_par(); 768 769 sdc_enable_channel(base); 770 771 /* 772 * Linux driver calls sdc_set_brightness() here again, 773 * once is enough for us 774 */ 775 debug("%s() done\n", __func__); 776 } 777 778 /* ------------------------ public part ------------------- */ calc_fbsize(void)779 ulong calc_fbsize(void) 780 { 781 return panel.plnSizeX * panel.plnSizeY * panel.gdfBytesPP; 782 } 783 784 /* 785 * The current implementation is only tested for GDF_16BIT_565RGB! 786 * It was switched from the original CONFIG_LCD setup to CONFIG_VIDEO, 787 * because the lcd code seemed loaded with color table stuff, that 788 * does not relate to most modern TFTs. cfb_console.c looks more 789 * straight forward. 790 * This is the environment setting for the original setup 791 * "unknown=video=ctfb:x:240,y:320,depth:16,mode:0,pclk:185925,le:9,ri:17, 792 * up:7,lo:10,hs:1,vs:1,sync:100663296,vmode:0" 793 * "videomode=unknown" 794 * 795 * Settings for VBEST VGG322403 display: 796 * "videomode=video=ctfb:x:320,y:240,depth:16,mode:0,pclk:156000, 797 * "le:20,ri:68,up:7,lo:29,hs:30,vs:3,sync:100663296,vmode:0" 798 * 799 * Settings for COM57H5M10XRC display: 800 * "videomode=video=ctfb:x:640,y:480,depth:16,mode:0,pclk:40000, 801 * "le:120,ri:40,up:35,lo:10,hs:30,vs:3,sync:100663296,vmode:0" 802 */ video_hw_init(void)803 void *video_hw_init(void) 804 { 805 char *penv; 806 u32 memsize; 807 unsigned long t1, hsynch, vsynch; 808 int bits_per_pixel, i, tmp, videomode; 809 810 tmp = 0; 811 812 puts("Video: "); 813 814 videomode = CONFIG_SYS_DEFAULT_VIDEO_MODE; 815 /* get video mode via environment */ 816 penv = env_get("videomode"); 817 if (penv) { 818 /* decide if it is a string */ 819 if (penv[0] <= '9') { 820 videomode = (int) simple_strtoul(penv, NULL, 16); 821 tmp = 1; 822 } 823 } else { 824 tmp = 1; 825 } 826 if (tmp) { 827 /* parameter are vesa modes */ 828 /* search params */ 829 for (i = 0; i < VESA_MODES_COUNT; i++) { 830 if (vesa_modes[i].vesanr == videomode) 831 break; 832 } 833 if (i == VESA_MODES_COUNT) { 834 printf("No VESA Mode found, switching to mode 0x%x ", 835 CONFIG_SYS_DEFAULT_VIDEO_MODE); 836 i = 0; 837 } 838 mode = (struct ctfb_res_modes *) 839 &res_mode_init[vesa_modes[i].resindex]; 840 bits_per_pixel = vesa_modes[i].bits_per_pixel; 841 } else { 842 mode = (struct ctfb_res_modes *) &var_mode; 843 bits_per_pixel = video_get_params(mode, penv); 844 } 845 846 /* calculate hsynch and vsynch freq (info only) */ 847 t1 = (mode->left_margin + mode->xres + 848 mode->right_margin + mode->hsync_len) / 8; 849 t1 *= 8; 850 t1 *= mode->pixclock; 851 t1 /= 1000; 852 hsynch = 1000000000L / t1; 853 t1 *= (mode->upper_margin + mode->yres + 854 mode->lower_margin + mode->vsync_len); 855 t1 /= 1000; 856 vsynch = 1000000000L / t1; 857 858 /* fill in Graphic device struct */ 859 sprintf(panel.modeIdent, "%dx%dx%d %ldkHz %ldHz", 860 mode->xres, mode->yres, 861 bits_per_pixel, (hsynch / 1000), (vsynch / 1000)); 862 printf("%s\n", panel.modeIdent); 863 panel.winSizeX = mode->xres; 864 panel.winSizeY = mode->yres; 865 panel.plnSizeX = mode->xres; 866 panel.plnSizeY = mode->yres; 867 868 switch (bits_per_pixel) { 869 case 24: 870 panel.gdfBytesPP = 4; 871 panel.gdfIndex = GDF_32BIT_X888RGB; 872 break; 873 case 16: 874 panel.gdfBytesPP = 2; 875 panel.gdfIndex = GDF_16BIT_565RGB; 876 break; 877 default: 878 panel.gdfBytesPP = 1; 879 panel.gdfIndex = GDF__8BIT_INDEX; 880 break; 881 } 882 883 /* set up Hardware */ 884 memsize = calc_fbsize(); 885 886 debug("%s() allocating %d bytes\n", __func__, memsize); 887 888 /* fill in missing Graphic device struct */ 889 panel.frameAdrs = (u32) malloc(memsize); 890 if (panel.frameAdrs == 0) { 891 printf("%s() malloc(%d) failed\n", __func__, memsize); 892 return 0; 893 } 894 panel.memSize = memsize; 895 896 ll_disp3_enable((void *) panel.frameAdrs); 897 memset((void *) panel.frameAdrs, 0, memsize); 898 899 debug("%s() done, framebuffer at 0x%x, size=%d cleared\n", 900 __func__, panel.frameAdrs, memsize); 901 902 return (void *) &panel; 903 } 904