1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * DBAu1000/1500/1100 PBAu1100/1500 board support 4 * 5 * Copyright 2000, 2008 MontaVista Software Inc. 6 * Author: MontaVista Software, Inc. <source@mvista.com> 7 */ 8 9#include <linux/clk.h> 10#include <linux/dma-mapping.h> 11#include <linux/gpio.h> 12#include <linux/gpio/machine.h> 13#include <linux/init.h> 14#include <linux/interrupt.h> 15#include <linux/leds.h> 16#include <linux/mmc/host.h> 17#include <linux/platform_device.h> 18#include <linux/pm.h> 19#include <linux/spi/spi.h> 20#include <linux/spi/spi_gpio.h> 21#include <linux/spi/ads7846.h> 22#include <asm/mach-au1x00/au1000.h> 23#include <asm/mach-au1x00/gpio-au1000.h> 24#include <asm/mach-au1x00/au1000_dma.h> 25#include <asm/mach-au1x00/au1100_mmc.h> 26#include <asm/mach-db1x00/bcsr.h> 27#include <asm/reboot.h> 28#include <prom.h> 29#include "platform.h" 30 31#define F_SWAPPED (bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1000_SWAPBOOT) 32 33const char *get_system_type(void); 34 35int __init db1000_board_setup(void) 36{ 37 /* initialize board register space */ 38 bcsr_init(DB1000_BCSR_PHYS_ADDR, 39 DB1000_BCSR_PHYS_ADDR + DB1000_BCSR_HEXLED_OFS); 40 41 switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) { 42 case BCSR_WHOAMI_DB1000: 43 case BCSR_WHOAMI_DB1500: 44 case BCSR_WHOAMI_DB1100: 45 case BCSR_WHOAMI_PB1500: 46 case BCSR_WHOAMI_PB1500R2: 47 case BCSR_WHOAMI_PB1100: 48 pr_info("AMD Alchemy %s Board\n", get_system_type()); 49 return 0; 50 } 51 return -ENODEV; 52} 53 54static int db1500_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin) 55{ 56 if ((slot < 12) || (slot > 13) || pin == 0) 57 return -1; 58 if (slot == 12) 59 return (pin == 1) ? AU1500_PCI_INTA : 0xff; 60 if (slot == 13) { 61 switch (pin) { 62 case 1: return AU1500_PCI_INTA; 63 case 2: return AU1500_PCI_INTB; 64 case 3: return AU1500_PCI_INTC; 65 case 4: return AU1500_PCI_INTD; 66 } 67 } 68 return -1; 69} 70 71static u64 au1xxx_all_dmamask = DMA_BIT_MASK(32); 72 73static struct resource alchemy_pci_host_res[] = { 74 [0] = { 75 .start = AU1500_PCI_PHYS_ADDR, 76 .end = AU1500_PCI_PHYS_ADDR + 0xfff, 77 .flags = IORESOURCE_MEM, 78 }, 79}; 80 81static struct alchemy_pci_platdata db1500_pci_pd = { 82 .board_map_irq = db1500_map_pci_irq, 83}; 84 85static struct platform_device db1500_pci_host_dev = { 86 .dev.platform_data = &db1500_pci_pd, 87 .name = "alchemy-pci", 88 .id = 0, 89 .num_resources = ARRAY_SIZE(alchemy_pci_host_res), 90 .resource = alchemy_pci_host_res, 91}; 92 93int __init db1500_pci_setup(void) 94{ 95 return platform_device_register(&db1500_pci_host_dev); 96} 97 98static struct resource au1100_lcd_resources[] = { 99 [0] = { 100 .start = AU1100_LCD_PHYS_ADDR, 101 .end = AU1100_LCD_PHYS_ADDR + 0x800 - 1, 102 .flags = IORESOURCE_MEM, 103 }, 104 [1] = { 105 .start = AU1100_LCD_INT, 106 .end = AU1100_LCD_INT, 107 .flags = IORESOURCE_IRQ, 108 } 109}; 110 111static struct platform_device au1100_lcd_device = { 112 .name = "au1100-lcd", 113 .id = 0, 114 .dev = { 115 .dma_mask = &au1xxx_all_dmamask, 116 .coherent_dma_mask = DMA_BIT_MASK(32), 117 }, 118 .num_resources = ARRAY_SIZE(au1100_lcd_resources), 119 .resource = au1100_lcd_resources, 120}; 121 122static struct resource alchemy_ac97c_res[] = { 123 [0] = { 124 .start = AU1000_AC97_PHYS_ADDR, 125 .end = AU1000_AC97_PHYS_ADDR + 0xfff, 126 .flags = IORESOURCE_MEM, 127 }, 128 [1] = { 129 .start = DMA_ID_AC97C_TX, 130 .end = DMA_ID_AC97C_TX, 131 .flags = IORESOURCE_DMA, 132 }, 133 [2] = { 134 .start = DMA_ID_AC97C_RX, 135 .end = DMA_ID_AC97C_RX, 136 .flags = IORESOURCE_DMA, 137 }, 138}; 139 140static struct platform_device alchemy_ac97c_dev = { 141 .name = "alchemy-ac97c", 142 .id = -1, 143 .resource = alchemy_ac97c_res, 144 .num_resources = ARRAY_SIZE(alchemy_ac97c_res), 145}; 146 147static struct platform_device alchemy_ac97c_dma_dev = { 148 .name = "alchemy-pcm-dma", 149 .id = 0, 150}; 151 152static struct platform_device db1x00_codec_dev = { 153 .name = "ac97-codec", 154 .id = -1, 155}; 156 157static struct platform_device db1x00_audio_dev = { 158 .name = "db1000-audio", 159 .dev = { 160 .dma_mask = &au1xxx_all_dmamask, 161 .coherent_dma_mask = DMA_BIT_MASK(32), 162 }, 163}; 164 165/******************************************************************************/ 166 167#ifdef CONFIG_MMC_AU1X 168static irqreturn_t db1100_mmc_cd(int irq, void *ptr) 169{ 170 mmc_detect_change(ptr, msecs_to_jiffies(500)); 171 return IRQ_HANDLED; 172} 173 174static int db1100_mmc_cd_setup(void *mmc_host, int en) 175{ 176 int ret = 0, irq; 177 178 if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1100) 179 irq = AU1100_GPIO19_INT; 180 else 181 irq = AU1100_GPIO14_INT; /* PB1100 SD0 CD# */ 182 183 if (en) { 184 irq_set_irq_type(irq, IRQ_TYPE_EDGE_BOTH); 185 ret = request_irq(irq, db1100_mmc_cd, 0, 186 "sd0_cd", mmc_host); 187 } else 188 free_irq(irq, mmc_host); 189 return ret; 190} 191 192static int db1100_mmc1_cd_setup(void *mmc_host, int en) 193{ 194 int ret = 0, irq; 195 196 if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1100) 197 irq = AU1100_GPIO20_INT; 198 else 199 irq = AU1100_GPIO15_INT; /* PB1100 SD1 CD# */ 200 201 if (en) { 202 irq_set_irq_type(irq, IRQ_TYPE_EDGE_BOTH); 203 ret = request_irq(irq, db1100_mmc_cd, 0, 204 "sd1_cd", mmc_host); 205 } else 206 free_irq(irq, mmc_host); 207 return ret; 208} 209 210static int db1100_mmc_card_readonly(void *mmc_host) 211{ 212 /* testing suggests that this bit is inverted */ 213 return (bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD0WP) ? 0 : 1; 214} 215 216static int db1100_mmc_card_inserted(void *mmc_host) 217{ 218 return !alchemy_gpio_get_value(19); 219} 220 221static void db1100_mmc_set_power(void *mmc_host, int state) 222{ 223 int bit; 224 225 if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1100) 226 bit = BCSR_BOARD_SD0PWR; 227 else 228 bit = BCSR_BOARD_PB1100_SD0PWR; 229 230 if (state) { 231 bcsr_mod(BCSR_BOARD, 0, bit); 232 msleep(400); /* stabilization time */ 233 } else 234 bcsr_mod(BCSR_BOARD, bit, 0); 235} 236 237static void db1100_mmcled_set(struct led_classdev *led, enum led_brightness b) 238{ 239 if (b != LED_OFF) 240 bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED0, 0); 241 else 242 bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED0); 243} 244 245static struct led_classdev db1100_mmc_led = { 246 .brightness_set = db1100_mmcled_set, 247}; 248 249static int db1100_mmc1_card_readonly(void *mmc_host) 250{ 251 return (bcsr_read(BCSR_BOARD) & BCSR_BOARD_SD1WP) ? 1 : 0; 252} 253 254static int db1100_mmc1_card_inserted(void *mmc_host) 255{ 256 return !alchemy_gpio_get_value(20); 257} 258 259static void db1100_mmc1_set_power(void *mmc_host, int state) 260{ 261 int bit; 262 263 if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1100) 264 bit = BCSR_BOARD_SD1PWR; 265 else 266 bit = BCSR_BOARD_PB1100_SD1PWR; 267 268 if (state) { 269 bcsr_mod(BCSR_BOARD, 0, bit); 270 msleep(400); /* stabilization time */ 271 } else 272 bcsr_mod(BCSR_BOARD, bit, 0); 273} 274 275static void db1100_mmc1led_set(struct led_classdev *led, enum led_brightness b) 276{ 277 if (b != LED_OFF) 278 bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED1, 0); 279 else 280 bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED1); 281} 282 283static struct led_classdev db1100_mmc1_led = { 284 .brightness_set = db1100_mmc1led_set, 285}; 286 287static struct au1xmmc_platform_data db1100_mmc_platdata[2] = { 288 [0] = { 289 .cd_setup = db1100_mmc_cd_setup, 290 .set_power = db1100_mmc_set_power, 291 .card_inserted = db1100_mmc_card_inserted, 292 .card_readonly = db1100_mmc_card_readonly, 293 .led = &db1100_mmc_led, 294 }, 295 [1] = { 296 .cd_setup = db1100_mmc1_cd_setup, 297 .set_power = db1100_mmc1_set_power, 298 .card_inserted = db1100_mmc1_card_inserted, 299 .card_readonly = db1100_mmc1_card_readonly, 300 .led = &db1100_mmc1_led, 301 }, 302}; 303 304static struct resource au1100_mmc0_resources[] = { 305 [0] = { 306 .start = AU1100_SD0_PHYS_ADDR, 307 .end = AU1100_SD0_PHYS_ADDR + 0xfff, 308 .flags = IORESOURCE_MEM, 309 }, 310 [1] = { 311 .start = AU1100_SD_INT, 312 .end = AU1100_SD_INT, 313 .flags = IORESOURCE_IRQ, 314 }, 315 [2] = { 316 .start = DMA_ID_SD0_TX, 317 .end = DMA_ID_SD0_TX, 318 .flags = IORESOURCE_DMA, 319 }, 320 [3] = { 321 .start = DMA_ID_SD0_RX, 322 .end = DMA_ID_SD0_RX, 323 .flags = IORESOURCE_DMA, 324 } 325}; 326 327static struct platform_device db1100_mmc0_dev = { 328 .name = "au1xxx-mmc", 329 .id = 0, 330 .dev = { 331 .dma_mask = &au1xxx_all_dmamask, 332 .coherent_dma_mask = DMA_BIT_MASK(32), 333 .platform_data = &db1100_mmc_platdata[0], 334 }, 335 .num_resources = ARRAY_SIZE(au1100_mmc0_resources), 336 .resource = au1100_mmc0_resources, 337}; 338 339static struct resource au1100_mmc1_res[] = { 340 [0] = { 341 .start = AU1100_SD1_PHYS_ADDR, 342 .end = AU1100_SD1_PHYS_ADDR + 0xfff, 343 .flags = IORESOURCE_MEM, 344 }, 345 [1] = { 346 .start = AU1100_SD_INT, 347 .end = AU1100_SD_INT, 348 .flags = IORESOURCE_IRQ, 349 }, 350 [2] = { 351 .start = DMA_ID_SD1_TX, 352 .end = DMA_ID_SD1_TX, 353 .flags = IORESOURCE_DMA, 354 }, 355 [3] = { 356 .start = DMA_ID_SD1_RX, 357 .end = DMA_ID_SD1_RX, 358 .flags = IORESOURCE_DMA, 359 } 360}; 361 362static struct platform_device db1100_mmc1_dev = { 363 .name = "au1xxx-mmc", 364 .id = 1, 365 .dev = { 366 .dma_mask = &au1xxx_all_dmamask, 367 .coherent_dma_mask = DMA_BIT_MASK(32), 368 .platform_data = &db1100_mmc_platdata[1], 369 }, 370 .num_resources = ARRAY_SIZE(au1100_mmc1_res), 371 .resource = au1100_mmc1_res, 372}; 373#endif /* CONFIG_MMC_AU1X */ 374 375/******************************************************************************/ 376 377static struct ads7846_platform_data db1100_touch_pd = { 378 .model = 7846, 379 .vref_mv = 3300, 380 .gpio_pendown = 21, 381}; 382 383static struct spi_gpio_platform_data db1100_spictl_pd = { 384 .num_chipselect = 1, 385}; 386 387static struct spi_board_info db1100_spi_info[] __initdata = { 388 [0] = { 389 .modalias = "ads7846", 390 .max_speed_hz = 3250000, 391 .bus_num = 0, 392 .chip_select = 0, 393 .mode = 0, 394 .irq = AU1100_GPIO21_INT, 395 .platform_data = &db1100_touch_pd, 396 }, 397}; 398 399static struct platform_device db1100_spi_dev = { 400 .name = "spi_gpio", 401 .id = 0, 402 .dev = { 403 .platform_data = &db1100_spictl_pd, 404 .dma_mask = &au1xxx_all_dmamask, 405 .coherent_dma_mask = DMA_BIT_MASK(32), 406 }, 407}; 408 409/* 410 * Alchemy GPIO 2 has its base at 200 so the GPIO lines 411 * 207 thru 210 are GPIOs at offset 7 thru 10 at this chip. 412 */ 413static struct gpiod_lookup_table db1100_spi_gpiod_table = { 414 .dev_id = "spi_gpio", 415 .table = { 416 GPIO_LOOKUP("alchemy-gpio2", 9, 417 "sck", GPIO_ACTIVE_HIGH), 418 GPIO_LOOKUP("alchemy-gpio2", 8, 419 "mosi", GPIO_ACTIVE_HIGH), 420 GPIO_LOOKUP("alchemy-gpio2", 7, 421 "miso", GPIO_ACTIVE_HIGH), 422 GPIO_LOOKUP("alchemy-gpio2", 10, 423 "cs", GPIO_ACTIVE_HIGH), 424 { }, 425 }, 426}; 427 428static struct platform_device *db1x00_devs[] = { 429 &db1x00_codec_dev, 430 &alchemy_ac97c_dma_dev, 431 &alchemy_ac97c_dev, 432 &db1x00_audio_dev, 433}; 434 435static struct platform_device *db1100_devs[] = { 436 &au1100_lcd_device, 437#ifdef CONFIG_MMC_AU1X 438 &db1100_mmc0_dev, 439 &db1100_mmc1_dev, 440#endif 441}; 442 443int __init db1000_dev_setup(void) 444{ 445 int board = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)); 446 int c0, c1, d0, d1, s0, s1, flashsize = 32, twosocks = 1; 447 unsigned long pfc; 448 struct clk *c, *p; 449 450 if (board == BCSR_WHOAMI_DB1500) { 451 c0 = AU1500_GPIO2_INT; 452 c1 = AU1500_GPIO5_INT; 453 d0 = 0; /* GPIO number, NOT irq! */ 454 d1 = 3; /* GPIO number, NOT irq! */ 455 s0 = AU1500_GPIO1_INT; 456 s1 = AU1500_GPIO4_INT; 457 } else if (board == BCSR_WHOAMI_DB1100) { 458 c0 = AU1100_GPIO2_INT; 459 c1 = AU1100_GPIO5_INT; 460 d0 = 0; /* GPIO number, NOT irq! */ 461 d1 = 3; /* GPIO number, NOT irq! */ 462 s0 = AU1100_GPIO1_INT; 463 s1 = AU1100_GPIO4_INT; 464 465 gpio_request(19, "sd0_cd"); 466 gpio_request(20, "sd1_cd"); 467 gpio_direction_input(19); /* sd0 cd# */ 468 gpio_direction_input(20); /* sd1 cd# */ 469 470 /* spi_gpio on SSI0 pins */ 471 pfc = alchemy_rdsys(AU1000_SYS_PINFUNC); 472 pfc |= (1 << 0); /* SSI0 pins as GPIOs */ 473 alchemy_wrsys(pfc, AU1000_SYS_PINFUNC); 474 475 spi_register_board_info(db1100_spi_info, 476 ARRAY_SIZE(db1100_spi_info)); 477 478 /* link LCD clock to AUXPLL */ 479 p = clk_get(NULL, "auxpll_clk"); 480 c = clk_get(NULL, "lcd_intclk"); 481 if (!IS_ERR(c) && !IS_ERR(p)) { 482 clk_set_parent(c, p); 483 clk_set_rate(c, clk_get_rate(p)); 484 } 485 if (!IS_ERR(c)) 486 clk_put(c); 487 if (!IS_ERR(p)) 488 clk_put(p); 489 490 platform_add_devices(db1100_devs, ARRAY_SIZE(db1100_devs)); 491 gpiod_add_lookup_table(&db1100_spi_gpiod_table); 492 platform_device_register(&db1100_spi_dev); 493 } else if (board == BCSR_WHOAMI_DB1000) { 494 c0 = AU1000_GPIO2_INT; 495 c1 = AU1000_GPIO5_INT; 496 d0 = 0; /* GPIO number, NOT irq! */ 497 d1 = 3; /* GPIO number, NOT irq! */ 498 s0 = AU1000_GPIO1_INT; 499 s1 = AU1000_GPIO4_INT; 500 } else if ((board == BCSR_WHOAMI_PB1500) || 501 (board == BCSR_WHOAMI_PB1500R2)) { 502 c0 = AU1500_GPIO203_INT; 503 d0 = 1; /* GPIO number, NOT irq! */ 504 s0 = AU1500_GPIO202_INT; 505 twosocks = 0; 506 flashsize = 64; 507 /* RTC and daughtercard irqs */ 508 irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_LOW); 509 irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW); 510 /* EPSON S1D13806 0x1b000000 511 * SRAM 1MB/2MB 0x1a000000 512 * DS1693 RTC 0x0c000000 513 */ 514 } else if (board == BCSR_WHOAMI_PB1100) { 515 c0 = AU1100_GPIO11_INT; 516 d0 = 9; /* GPIO number, NOT irq! */ 517 s0 = AU1100_GPIO10_INT; 518 twosocks = 0; 519 flashsize = 64; 520 /* pendown, rtc, daughtercard irqs */ 521 irq_set_irq_type(AU1100_GPIO8_INT, IRQ_TYPE_LEVEL_LOW); 522 irq_set_irq_type(AU1100_GPIO12_INT, IRQ_TYPE_LEVEL_LOW); 523 irq_set_irq_type(AU1100_GPIO13_INT, IRQ_TYPE_LEVEL_LOW); 524 /* EPSON S1D13806 0x1b000000 525 * SRAM 1MB/2MB 0x1a000000 526 * DiskOnChip 0x0d000000 527 * DS1693 RTC 0x0c000000 528 */ 529 platform_add_devices(db1100_devs, ARRAY_SIZE(db1100_devs)); 530 } else 531 return 0; /* unknown board, no further dev setup to do */ 532 533 irq_set_irq_type(c0, IRQ_TYPE_LEVEL_LOW); 534 irq_set_irq_type(s0, IRQ_TYPE_LEVEL_LOW); 535 536 db1x_register_pcmcia_socket( 537 AU1000_PCMCIA_ATTR_PHYS_ADDR, 538 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1, 539 AU1000_PCMCIA_MEM_PHYS_ADDR, 540 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1, 541 AU1000_PCMCIA_IO_PHYS_ADDR, 542 AU1000_PCMCIA_IO_PHYS_ADDR + 0x000010000 - 1, 543 c0, d0, /*s0*/0, 0, 0); 544 545 if (twosocks) { 546 irq_set_irq_type(c1, IRQ_TYPE_LEVEL_LOW); 547 irq_set_irq_type(s1, IRQ_TYPE_LEVEL_LOW); 548 549 db1x_register_pcmcia_socket( 550 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004000000, 551 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004400000 - 1, 552 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x004000000, 553 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x004400000 - 1, 554 AU1000_PCMCIA_IO_PHYS_ADDR + 0x004000000, 555 AU1000_PCMCIA_IO_PHYS_ADDR + 0x004010000 - 1, 556 c1, d1, /*s1*/0, 0, 1); 557 } 558 559 platform_add_devices(db1x00_devs, ARRAY_SIZE(db1x00_devs)); 560 db1x_register_norflash(flashsize << 20, 4 /* 32bit */, F_SWAPPED); 561 return 0; 562} 563