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 33 const char *get_system_type(void); 34 db1000_board_setup(void)35 int __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 db1500_map_pci_irq(const struct pci_dev * d,u8 slot,u8 pin)54 static 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 71 static u64 au1xxx_all_dmamask = DMA_BIT_MASK(32); 72 73 static 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 81 static struct alchemy_pci_platdata db1500_pci_pd = { 82 .board_map_irq = db1500_map_pci_irq, 83 }; 84 85 static 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 db1500_pci_setup(void)93 int __init db1500_pci_setup(void) 94 { 95 return platform_device_register(&db1500_pci_host_dev); 96 } 97 98 static 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 }; 110 111 static 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 }; 121 122 static 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 }; 139 140 static 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 }; 146 147 static struct platform_device alchemy_ac97c_dma_dev = { 148 .name = "alchemy-pcm-dma", 149 .id = 0, 150 }; 151 152 static struct platform_device db1x00_codec_dev = { 153 .name = "ac97-codec", 154 .id = -1, 155 }; 156 157 static 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 db1100_mmc_cd(int irq,void * ptr)168 static 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 db1100_mmc_cd_setup(void * mmc_host,int en)174 static 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 db1100_mmc1_cd_setup(void * mmc_host,int en)192 static 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 db1100_mmc_card_readonly(void * mmc_host)210 static 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 db1100_mmc_card_inserted(void * mmc_host)216 static int db1100_mmc_card_inserted(void *mmc_host) 217 { 218 return !alchemy_gpio_get_value(19); 219 } 220 db1100_mmc_set_power(void * mmc_host,int state)221 static 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 db1100_mmcled_set(struct led_classdev * led,enum led_brightness b)237 static 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 } 244 245 static struct led_classdev db1100_mmc_led = { 246 .brightness_set = db1100_mmcled_set, 247 }; 248 db1100_mmc1_card_readonly(void * mmc_host)249 static int db1100_mmc1_card_readonly(void *mmc_host) 250 { 251 return (bcsr_read(BCSR_BOARD) & BCSR_BOARD_SD1WP) ? 1 : 0; 252 } 253 db1100_mmc1_card_inserted(void * mmc_host)254 static int db1100_mmc1_card_inserted(void *mmc_host) 255 { 256 return !alchemy_gpio_get_value(20); 257 } 258 db1100_mmc1_set_power(void * mmc_host,int state)259 static 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 db1100_mmc1led_set(struct led_classdev * led,enum led_brightness b)275 static 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 } 282 283 static struct led_classdev db1100_mmc1_led = { 284 .brightness_set = db1100_mmc1led_set, 285 }; 286 287 static 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 }; 303 304 static 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 }; 326 327 static 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 }; 338 339 static 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 }; 361 362 static 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 /******************************************************************************/ 376 377 static struct ads7846_platform_data db1100_touch_pd = { 378 .model = 7846, 379 .vref_mv = 3300, 380 }; 381 382 static struct spi_gpio_platform_data db1100_spictl_pd = { 383 .num_chipselect = 1, 384 }; 385 386 static struct gpiod_lookup_table db1100_touch_gpio_table = { 387 .dev_id = "spi0.0", 388 .table = { 389 GPIO_LOOKUP("alchemy-gpio2", 21, 390 "pendown", GPIO_ACTIVE_LOW), 391 { } 392 }, 393 }; 394 395 static struct spi_board_info db1100_spi_info[] __initdata = { 396 [0] = { 397 .modalias = "ads7846", 398 .max_speed_hz = 3250000, 399 .bus_num = 0, 400 .chip_select = 0, 401 .mode = 0, 402 .irq = AU1100_GPIO21_INT, 403 .platform_data = &db1100_touch_pd, 404 }, 405 }; 406 407 static struct platform_device db1100_spi_dev = { 408 .name = "spi_gpio", 409 .id = 0, 410 .dev = { 411 .platform_data = &db1100_spictl_pd, 412 .dma_mask = &au1xxx_all_dmamask, 413 .coherent_dma_mask = DMA_BIT_MASK(32), 414 }, 415 }; 416 417 /* 418 * Alchemy GPIO 2 has its base at 200 so the GPIO lines 419 * 207 thru 210 are GPIOs at offset 7 thru 10 at this chip. 420 */ 421 static struct gpiod_lookup_table db1100_spi_gpiod_table = { 422 .dev_id = "spi_gpio", 423 .table = { 424 GPIO_LOOKUP("alchemy-gpio2", 9, 425 "sck", GPIO_ACTIVE_HIGH), 426 GPIO_LOOKUP("alchemy-gpio2", 8, 427 "mosi", GPIO_ACTIVE_HIGH), 428 GPIO_LOOKUP("alchemy-gpio2", 7, 429 "miso", GPIO_ACTIVE_HIGH), 430 GPIO_LOOKUP("alchemy-gpio2", 10, 431 "cs", GPIO_ACTIVE_HIGH), 432 { }, 433 }, 434 }; 435 436 static struct platform_device *db1x00_devs[] = { 437 &db1x00_codec_dev, 438 &alchemy_ac97c_dma_dev, 439 &alchemy_ac97c_dev, 440 &db1x00_audio_dev, 441 }; 442 443 static struct platform_device *db1100_devs[] = { 444 &au1100_lcd_device, 445 #ifdef CONFIG_MMC_AU1X 446 &db1100_mmc0_dev, 447 &db1100_mmc1_dev, 448 #endif 449 }; 450 db1000_dev_setup(void)451 int __init db1000_dev_setup(void) 452 { 453 int board = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)); 454 int c0, c1, d0, d1, s0, s1, flashsize = 32, twosocks = 1; 455 unsigned long pfc; 456 struct clk *c, *p; 457 458 if (board == BCSR_WHOAMI_DB1500) { 459 c0 = AU1500_GPIO2_INT; 460 c1 = AU1500_GPIO5_INT; 461 d0 = 0; /* GPIO number, NOT irq! */ 462 d1 = 3; /* GPIO number, NOT irq! */ 463 s0 = AU1500_GPIO1_INT; 464 s1 = AU1500_GPIO4_INT; 465 } else if (board == BCSR_WHOAMI_DB1100) { 466 c0 = AU1100_GPIO2_INT; 467 c1 = AU1100_GPIO5_INT; 468 d0 = 0; /* GPIO number, NOT irq! */ 469 d1 = 3; /* GPIO number, NOT irq! */ 470 s0 = AU1100_GPIO1_INT; 471 s1 = AU1100_GPIO4_INT; 472 473 gpio_request(19, "sd0_cd"); 474 gpio_request(20, "sd1_cd"); 475 gpio_direction_input(19); /* sd0 cd# */ 476 gpio_direction_input(20); /* sd1 cd# */ 477 478 /* spi_gpio on SSI0 pins */ 479 pfc = alchemy_rdsys(AU1000_SYS_PINFUNC); 480 pfc |= (1 << 0); /* SSI0 pins as GPIOs */ 481 alchemy_wrsys(pfc, AU1000_SYS_PINFUNC); 482 483 gpiod_add_lookup_table(&db1100_touch_gpio_table); 484 spi_register_board_info(db1100_spi_info, 485 ARRAY_SIZE(db1100_spi_info)); 486 487 /* link LCD clock to AUXPLL */ 488 p = clk_get(NULL, "auxpll_clk"); 489 c = clk_get(NULL, "lcd_intclk"); 490 if (!IS_ERR(c) && !IS_ERR(p)) { 491 clk_set_parent(c, p); 492 clk_set_rate(c, clk_get_rate(p)); 493 } 494 if (!IS_ERR(c)) 495 clk_put(c); 496 if (!IS_ERR(p)) 497 clk_put(p); 498 499 platform_add_devices(db1100_devs, ARRAY_SIZE(db1100_devs)); 500 gpiod_add_lookup_table(&db1100_spi_gpiod_table); 501 platform_device_register(&db1100_spi_dev); 502 } else if (board == BCSR_WHOAMI_DB1000) { 503 c0 = AU1000_GPIO2_INT; 504 c1 = AU1000_GPIO5_INT; 505 d0 = 0; /* GPIO number, NOT irq! */ 506 d1 = 3; /* GPIO number, NOT irq! */ 507 s0 = AU1000_GPIO1_INT; 508 s1 = AU1000_GPIO4_INT; 509 } else if ((board == BCSR_WHOAMI_PB1500) || 510 (board == BCSR_WHOAMI_PB1500R2)) { 511 c0 = AU1500_GPIO203_INT; 512 d0 = 1; /* GPIO number, NOT irq! */ 513 s0 = AU1500_GPIO202_INT; 514 twosocks = 0; 515 flashsize = 64; 516 /* RTC and daughtercard irqs */ 517 irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_LOW); 518 irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW); 519 /* EPSON S1D13806 0x1b000000 520 * SRAM 1MB/2MB 0x1a000000 521 * DS1693 RTC 0x0c000000 522 */ 523 } else if (board == BCSR_WHOAMI_PB1100) { 524 c0 = AU1100_GPIO11_INT; 525 d0 = 9; /* GPIO number, NOT irq! */ 526 s0 = AU1100_GPIO10_INT; 527 twosocks = 0; 528 flashsize = 64; 529 /* pendown, rtc, daughtercard irqs */ 530 irq_set_irq_type(AU1100_GPIO8_INT, IRQ_TYPE_LEVEL_LOW); 531 irq_set_irq_type(AU1100_GPIO12_INT, IRQ_TYPE_LEVEL_LOW); 532 irq_set_irq_type(AU1100_GPIO13_INT, IRQ_TYPE_LEVEL_LOW); 533 /* EPSON S1D13806 0x1b000000 534 * SRAM 1MB/2MB 0x1a000000 535 * DiskOnChip 0x0d000000 536 * DS1693 RTC 0x0c000000 537 */ 538 platform_add_devices(db1100_devs, ARRAY_SIZE(db1100_devs)); 539 } else 540 return 0; /* unknown board, no further dev setup to do */ 541 542 irq_set_irq_type(c0, IRQ_TYPE_LEVEL_LOW); 543 irq_set_irq_type(s0, IRQ_TYPE_LEVEL_LOW); 544 545 db1x_register_pcmcia_socket( 546 AU1000_PCMCIA_ATTR_PHYS_ADDR, 547 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1, 548 AU1000_PCMCIA_MEM_PHYS_ADDR, 549 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1, 550 AU1000_PCMCIA_IO_PHYS_ADDR, 551 AU1000_PCMCIA_IO_PHYS_ADDR + 0x000010000 - 1, 552 c0, d0, /*s0*/0, 0, 0); 553 554 if (twosocks) { 555 irq_set_irq_type(c1, IRQ_TYPE_LEVEL_LOW); 556 irq_set_irq_type(s1, IRQ_TYPE_LEVEL_LOW); 557 558 db1x_register_pcmcia_socket( 559 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004000000, 560 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004400000 - 1, 561 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x004000000, 562 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x004400000 - 1, 563 AU1000_PCMCIA_IO_PHYS_ADDR + 0x004000000, 564 AU1000_PCMCIA_IO_PHYS_ADDR + 0x004010000 - 1, 565 c1, d1, /*s1*/0, 0, 1); 566 } 567 568 platform_add_devices(db1x00_devs, ARRAY_SIZE(db1x00_devs)); 569 db1x_register_norflash(flashsize << 20, 4 /* 32bit */, F_SWAPPED); 570 return 0; 571 } 572