1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * linux/arch/arm/mach-sa1100/assabet.c 4 * 5 * Author: Nicolas Pitre 6 * 7 * This file contains all Assabet-specific tweaks. 8 */ 9#include <linux/init.h> 10#include <linux/kernel.h> 11#include <linux/module.h> 12#include <linux/errno.h> 13#include <linux/gpio/gpio-reg.h> 14#include <linux/gpio/machine.h> 15#include <linux/gpio_keys.h> 16#include <linux/ioport.h> 17#include <linux/platform_data/sa11x0-serial.h> 18#include <linux/regulator/fixed.h> 19#include <linux/regulator/machine.h> 20#include <linux/serial_core.h> 21#include <linux/platform_device.h> 22#include <linux/mfd/ucb1x00.h> 23#include <linux/mtd/mtd.h> 24#include <linux/mtd/partitions.h> 25#include <linux/delay.h> 26#include <linux/mm.h> 27#include <linux/leds.h> 28#include <linux/slab.h> 29 30#include <video/sa1100fb.h> 31 32#include <mach/hardware.h> 33#include <asm/mach-types.h> 34#include <asm/setup.h> 35#include <asm/page.h> 36#include <asm/pgtable-hwdef.h> 37#include <asm/tlbflush.h> 38 39#include <asm/mach/arch.h> 40#include <asm/mach/flash.h> 41#include <linux/platform_data/irda-sa11x0.h> 42#include <asm/mach/map.h> 43#include <mach/assabet.h> 44#include <linux/platform_data/mfd-mcp-sa11x0.h> 45#include <mach/irqs.h> 46 47#include "generic.h" 48 49#define ASSABET_BCR_DB1110 \ 50 (ASSABET_BCR_SPK_OFF | \ 51 ASSABET_BCR_LED_GREEN | ASSABET_BCR_LED_RED | \ 52 ASSABET_BCR_RS232EN | ASSABET_BCR_LCD_12RGB | \ 53 ASSABET_BCR_IRDA_MD0) 54 55#define ASSABET_BCR_DB1111 \ 56 (ASSABET_BCR_SPK_OFF | \ 57 ASSABET_BCR_LED_GREEN | ASSABET_BCR_LED_RED | \ 58 ASSABET_BCR_RS232EN | ASSABET_BCR_LCD_12RGB | \ 59 ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_STEREO_LB | \ 60 ASSABET_BCR_IRDA_MD0 | ASSABET_BCR_CF_RST) 61 62unsigned long SCR_value = ASSABET_SCR_INIT; 63EXPORT_SYMBOL(SCR_value); 64 65static struct gpio_chip *assabet_bcr_gc; 66 67static const char *assabet_names[] = { 68 "cf_pwr", "cf_gfx_reset", "nsoft_reset", "irda_fsel", 69 "irda_md0", "irda_md1", "stereo_loopback", "ncf_bus_on", 70 "audio_pwr_on", "light_pwr_on", "lcd16data", "lcd_pwr_on", 71 "rs232_on", "nred_led", "ngreen_led", "vib_on", 72 "com_dtr", "com_rts", "radio_wake_mod", "i2c_enab", 73 "tvir_enab", "qmute", "radio_pwr_on", "spkr_off", 74 "rs232_valid", "com_dcd", "com_cts", "com_dsr", 75 "radio_cts", "radio_dsr", "radio_dcd", "radio_ri", 76}; 77 78/* The old deprecated interface */ 79void ASSABET_BCR_frob(unsigned int mask, unsigned int val) 80{ 81 unsigned long m = mask, v = val; 82 83 assabet_bcr_gc->set_multiple(assabet_bcr_gc, &m, &v); 84} 85EXPORT_SYMBOL(ASSABET_BCR_frob); 86 87static int __init assabet_init_gpio(void __iomem *reg, u32 def_val) 88{ 89 struct gpio_chip *gc; 90 91 writel_relaxed(def_val, reg); 92 93 gc = gpio_reg_init(NULL, reg, -1, 32, "assabet", 0xff000000, def_val, 94 assabet_names, NULL, NULL); 95 96 if (IS_ERR(gc)) 97 return PTR_ERR(gc); 98 99 assabet_bcr_gc = gc; 100 101 return gc->base; 102} 103 104/* 105 * The codec reset goes to three devices, so we need to release 106 * the rest when any one of these requests it. However, that 107 * causes the ADV7171 to consume around 100mA - more than half 108 * the LCD-blanked power. 109 * 110 * With the ADV7171, LCD and backlight enabled, we go over 111 * budget on the MAX846 Li-Ion charger, and if no Li-Ion battery 112 * is connected, the Assabet crashes. 113 */ 114#define RST_UCB1X00 (1 << 0) 115#define RST_UDA1341 (1 << 1) 116#define RST_ADV7171 (1 << 2) 117 118#define SDA GPIO_GPIO(15) 119#define SCK GPIO_GPIO(18) 120#define MOD GPIO_GPIO(17) 121 122static void adv7171_start(void) 123{ 124 GPSR = SCK; 125 udelay(1); 126 GPSR = SDA; 127 udelay(2); 128 GPCR = SDA; 129} 130 131static void adv7171_stop(void) 132{ 133 GPSR = SCK; 134 udelay(2); 135 GPSR = SDA; 136 udelay(1); 137} 138 139static void adv7171_send(unsigned byte) 140{ 141 unsigned i; 142 143 for (i = 0; i < 8; i++, byte <<= 1) { 144 GPCR = SCK; 145 udelay(1); 146 if (byte & 0x80) 147 GPSR = SDA; 148 else 149 GPCR = SDA; 150 udelay(1); 151 GPSR = SCK; 152 udelay(1); 153 } 154 GPCR = SCK; 155 udelay(1); 156 GPSR = SDA; 157 udelay(1); 158 GPDR &= ~SDA; 159 GPSR = SCK; 160 udelay(1); 161 if (GPLR & SDA) 162 printk(KERN_WARNING "No ACK from ADV7171\n"); 163 udelay(1); 164 GPCR = SCK | SDA; 165 udelay(1); 166 GPDR |= SDA; 167 udelay(1); 168} 169 170static void adv7171_write(unsigned reg, unsigned val) 171{ 172 unsigned gpdr = GPDR; 173 unsigned gplr = GPLR; 174 175 ASSABET_BCR_frob(ASSABET_BCR_AUDIO_ON, ASSABET_BCR_AUDIO_ON); 176 udelay(100); 177 178 GPCR = SDA | SCK | MOD; /* clear L3 mode to ensure UDA1341 doesn't respond */ 179 GPDR = (GPDR | SCK | MOD) & ~SDA; 180 udelay(10); 181 if (!(GPLR & SDA)) 182 printk(KERN_WARNING "Something dragging SDA down?\n"); 183 GPDR |= SDA; 184 185 adv7171_start(); 186 adv7171_send(0x54); 187 adv7171_send(reg); 188 adv7171_send(val); 189 adv7171_stop(); 190 191 /* Restore GPIO state for L3 bus */ 192 GPSR = gplr & (SDA | SCK | MOD); 193 GPCR = (~gplr) & (SDA | SCK | MOD); 194 GPDR = gpdr; 195} 196 197static void adv7171_sleep(void) 198{ 199 /* Put the ADV7171 into sleep mode */ 200 adv7171_write(0x04, 0x40); 201} 202 203static unsigned codec_nreset; 204 205static void assabet_codec_reset(unsigned mask, int set) 206{ 207 unsigned long flags; 208 bool old; 209 210 local_irq_save(flags); 211 old = !codec_nreset; 212 if (set) 213 codec_nreset &= ~mask; 214 else 215 codec_nreset |= mask; 216 217 if (old != !codec_nreset) { 218 if (codec_nreset) { 219 ASSABET_BCR_set(ASSABET_BCR_NCODEC_RST); 220 adv7171_sleep(); 221 } else { 222 ASSABET_BCR_clear(ASSABET_BCR_NCODEC_RST); 223 } 224 } 225 local_irq_restore(flags); 226} 227 228static void assabet_ucb1x00_reset(enum ucb1x00_reset state) 229{ 230 int set = state == UCB_RST_REMOVE || state == UCB_RST_SUSPEND || 231 state == UCB_RST_PROBE_FAIL; 232 assabet_codec_reset(RST_UCB1X00, set); 233} 234 235void assabet_uda1341_reset(int set) 236{ 237 assabet_codec_reset(RST_UDA1341, set); 238} 239EXPORT_SYMBOL(assabet_uda1341_reset); 240 241 242/* 243 * Assabet flash support code. 244 */ 245 246#ifdef ASSABET_REV_4 247/* 248 * Phase 4 Assabet has two 28F160B3 flash parts in bank 0: 249 */ 250static struct mtd_partition assabet_partitions[] = { 251 { 252 .name = "bootloader", 253 .size = 0x00020000, 254 .offset = 0, 255 .mask_flags = MTD_WRITEABLE, 256 }, { 257 .name = "bootloader params", 258 .size = 0x00020000, 259 .offset = MTDPART_OFS_APPEND, 260 .mask_flags = MTD_WRITEABLE, 261 }, { 262 .name = "jffs", 263 .size = MTDPART_SIZ_FULL, 264 .offset = MTDPART_OFS_APPEND, 265 } 266}; 267#else 268/* 269 * Phase 5 Assabet has two 28F128J3A flash parts in bank 0: 270 */ 271static struct mtd_partition assabet_partitions[] = { 272 { 273 .name = "bootloader", 274 .size = 0x00040000, 275 .offset = 0, 276 .mask_flags = MTD_WRITEABLE, 277 }, { 278 .name = "bootloader params", 279 .size = 0x00040000, 280 .offset = MTDPART_OFS_APPEND, 281 .mask_flags = MTD_WRITEABLE, 282 }, { 283 .name = "jffs", 284 .size = MTDPART_SIZ_FULL, 285 .offset = MTDPART_OFS_APPEND, 286 } 287}; 288#endif 289 290static struct flash_platform_data assabet_flash_data = { 291 .map_name = "cfi_probe", 292 .parts = assabet_partitions, 293 .nr_parts = ARRAY_SIZE(assabet_partitions), 294}; 295 296static struct resource assabet_flash_resources[] = { 297 DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M), 298 DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_32M), 299}; 300 301 302/* 303 * Assabet IrDA support code. 304 */ 305 306static int assabet_irda_set_power(struct device *dev, unsigned int state) 307{ 308 static unsigned int bcr_state[4] = { 309 ASSABET_BCR_IRDA_MD0, 310 ASSABET_BCR_IRDA_MD1|ASSABET_BCR_IRDA_MD0, 311 ASSABET_BCR_IRDA_MD1, 312 0 313 }; 314 315 if (state < 4) 316 ASSABET_BCR_frob(ASSABET_BCR_IRDA_MD1 | ASSABET_BCR_IRDA_MD0, 317 bcr_state[state]); 318 return 0; 319} 320 321static void assabet_irda_set_speed(struct device *dev, unsigned int speed) 322{ 323 if (speed < 4000000) 324 ASSABET_BCR_clear(ASSABET_BCR_IRDA_FSEL); 325 else 326 ASSABET_BCR_set(ASSABET_BCR_IRDA_FSEL); 327} 328 329static struct irda_platform_data assabet_irda_data = { 330 .set_power = assabet_irda_set_power, 331 .set_speed = assabet_irda_set_speed, 332}; 333 334static struct ucb1x00_plat_data assabet_ucb1x00_data = { 335 .reset = assabet_ucb1x00_reset, 336 .gpio_base = -1, 337 .can_wakeup = 1, 338}; 339 340static struct mcp_plat_data assabet_mcp_data = { 341 .mccr0 = MCCR0_ADM, 342 .sclk_rate = 11981000, 343 .codec_pdata = &assabet_ucb1x00_data, 344}; 345 346static void assabet_lcd_set_visual(u32 visual) 347{ 348 u_int is_true_color = visual == FB_VISUAL_TRUECOLOR; 349 350 if (machine_is_assabet()) { 351#if 1 // phase 4 or newer Assabet's 352 if (is_true_color) 353 ASSABET_BCR_set(ASSABET_BCR_LCD_12RGB); 354 else 355 ASSABET_BCR_clear(ASSABET_BCR_LCD_12RGB); 356#else 357 // older Assabet's 358 if (is_true_color) 359 ASSABET_BCR_clear(ASSABET_BCR_LCD_12RGB); 360 else 361 ASSABET_BCR_set(ASSABET_BCR_LCD_12RGB); 362#endif 363 } 364} 365 366#ifndef ASSABET_PAL_VIDEO 367static void assabet_lcd_backlight_power(int on) 368{ 369 if (on) 370 ASSABET_BCR_set(ASSABET_BCR_LIGHT_ON); 371 else 372 ASSABET_BCR_clear(ASSABET_BCR_LIGHT_ON); 373} 374 375/* 376 * Turn on/off the backlight. When turning the backlight on, we wait 377 * 500us after turning it on so we don't cause the supplies to droop 378 * when we enable the LCD controller (and cause a hard reset.) 379 */ 380static void assabet_lcd_power(int on) 381{ 382 if (on) { 383 ASSABET_BCR_set(ASSABET_BCR_LCD_ON); 384 udelay(500); 385 } else 386 ASSABET_BCR_clear(ASSABET_BCR_LCD_ON); 387} 388 389/* 390 * The assabet uses a sharp LQ039Q2DS54 LCD module. It is actually 391 * takes an RGB666 signal, but we provide it with an RGB565 signal 392 * instead (def_rgb_16). 393 */ 394static struct sa1100fb_mach_info lq039q2ds54_info = { 395 .pixclock = 171521, .bpp = 16, 396 .xres = 320, .yres = 240, 397 398 .hsync_len = 5, .vsync_len = 1, 399 .left_margin = 61, .upper_margin = 3, 400 .right_margin = 9, .lower_margin = 0, 401 402 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 403 404 .lccr0 = LCCR0_Color | LCCR0_Sngl | LCCR0_Act, 405 .lccr3 = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2), 406 407 .backlight_power = assabet_lcd_backlight_power, 408 .lcd_power = assabet_lcd_power, 409 .set_visual = assabet_lcd_set_visual, 410}; 411#else 412static void assabet_pal_backlight_power(int on) 413{ 414 ASSABET_BCR_clear(ASSABET_BCR_LIGHT_ON); 415} 416 417static void assabet_pal_power(int on) 418{ 419 ASSABET_BCR_clear(ASSABET_BCR_LCD_ON); 420} 421 422static struct sa1100fb_mach_info pal_info = { 423 .pixclock = 67797, .bpp = 16, 424 .xres = 640, .yres = 512, 425 426 .hsync_len = 64, .vsync_len = 6, 427 .left_margin = 125, .upper_margin = 70, 428 .right_margin = 115, .lower_margin = 36, 429 430 .lccr0 = LCCR0_Color | LCCR0_Sngl | LCCR0_Act, 431 .lccr3 = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(512), 432 433 .backlight_power = assabet_pal_backlight_power, 434 .lcd_power = assabet_pal_power, 435 .set_visual = assabet_lcd_set_visual, 436}; 437#endif 438 439#ifdef CONFIG_ASSABET_NEPONSET 440static struct resource neponset_resources[] = { 441 DEFINE_RES_MEM(0x10000000, 0x08000000), 442 DEFINE_RES_MEM(0x18000000, 0x04000000), 443 DEFINE_RES_MEM(0x40000000, SZ_8K), 444 DEFINE_RES_IRQ(IRQ_GPIO25), 445}; 446#endif 447 448static struct gpiod_lookup_table assabet_cf_gpio_table = { 449 .dev_id = "sa11x0-pcmcia.1", 450 .table = { 451 GPIO_LOOKUP("gpio", 21, "ready", GPIO_ACTIVE_HIGH), 452 GPIO_LOOKUP("gpio", 22, "detect", GPIO_ACTIVE_LOW), 453 GPIO_LOOKUP("gpio", 24, "bvd2", GPIO_ACTIVE_HIGH), 454 GPIO_LOOKUP("gpio", 25, "bvd1", GPIO_ACTIVE_HIGH), 455 GPIO_LOOKUP("assabet", 1, "reset", GPIO_ACTIVE_HIGH), 456 GPIO_LOOKUP("assabet", 7, "bus-enable", GPIO_ACTIVE_LOW), 457 { }, 458 }, 459}; 460 461static struct regulator_consumer_supply assabet_cf_vcc_consumers[] = { 462 REGULATOR_SUPPLY("vcc", "sa11x0-pcmcia.1"), 463}; 464 465static struct fixed_voltage_config assabet_cf_vcc_pdata __initdata = { 466 .supply_name = "cf-power", 467 .microvolts = 3300000, 468}; 469 470static struct gpiod_lookup_table assabet_cf_vcc_gpio_table = { 471 .dev_id = "reg-fixed-voltage.0", 472 .table = { 473 GPIO_LOOKUP("assabet", 0, NULL, GPIO_ACTIVE_HIGH), 474 { }, 475 }, 476}; 477 478static struct gpio_led assabet_leds[] __initdata = { 479 { 480 .name = "assabet:red", 481 .default_trigger = "cpu0", 482 .active_low = 1, 483 .default_state = LEDS_GPIO_DEFSTATE_KEEP, 484 }, { 485 .name = "assabet:green", 486 .default_trigger = "heartbeat", 487 .active_low = 1, 488 .default_state = LEDS_GPIO_DEFSTATE_KEEP, 489 }, 490}; 491 492static const struct gpio_led_platform_data assabet_leds_pdata __initconst = { 493 .num_leds = ARRAY_SIZE(assabet_leds), 494 .leds = assabet_leds, 495}; 496 497static struct gpio_keys_button assabet_keys_buttons[] = { 498 { 499 .gpio = 0, 500 .irq = IRQ_GPIO0, 501 .desc = "gpio0", 502 .wakeup = 1, 503 .can_disable = 1, 504 .debounce_interval = 5, 505 }, { 506 .gpio = 1, 507 .irq = IRQ_GPIO1, 508 .desc = "gpio1", 509 .wakeup = 1, 510 .can_disable = 1, 511 .debounce_interval = 5, 512 }, 513}; 514 515static const struct gpio_keys_platform_data assabet_keys_pdata = { 516 .buttons = assabet_keys_buttons, 517 .nbuttons = ARRAY_SIZE(assabet_keys_buttons), 518 .rep = 0, 519}; 520 521static struct gpiod_lookup_table assabet_uart1_gpio_table = { 522 .dev_id = "sa11x0-uart.1", 523 .table = { 524 GPIO_LOOKUP("assabet", 16, "dtr", GPIO_ACTIVE_LOW), 525 GPIO_LOOKUP("assabet", 17, "rts", GPIO_ACTIVE_LOW), 526 GPIO_LOOKUP("assabet", 25, "dcd", GPIO_ACTIVE_LOW), 527 GPIO_LOOKUP("assabet", 26, "cts", GPIO_ACTIVE_LOW), 528 GPIO_LOOKUP("assabet", 27, "dsr", GPIO_ACTIVE_LOW), 529 { }, 530 }, 531}; 532 533static struct gpiod_lookup_table assabet_uart3_gpio_table = { 534 .dev_id = "sa11x0-uart.3", 535 .table = { 536 GPIO_LOOKUP("assabet", 28, "cts", GPIO_ACTIVE_LOW), 537 GPIO_LOOKUP("assabet", 29, "dsr", GPIO_ACTIVE_LOW), 538 GPIO_LOOKUP("assabet", 30, "dcd", GPIO_ACTIVE_LOW), 539 GPIO_LOOKUP("assabet", 31, "rng", GPIO_ACTIVE_LOW), 540 { }, 541 }, 542}; 543 544static void __init assabet_init(void) 545{ 546 /* 547 * Ensure that the power supply is in "high power" mode. 548 */ 549 GPSR = GPIO_GPIO16; 550 GPDR |= GPIO_GPIO16; 551 552 /* 553 * Ensure that these pins are set as outputs and are driving 554 * logic 0. This ensures that we won't inadvertently toggle 555 * the WS latch in the CPLD, and we don't float causing 556 * excessive power drain. --rmk 557 */ 558 GPCR = GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM; 559 GPDR |= GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM; 560 561 /* 562 * Also set GPIO27 as an output; this is used to clock UART3 563 * via the FPGA and as otherwise has no pullups or pulldowns, 564 * so stop it floating. 565 */ 566 GPCR = GPIO_GPIO27; 567 GPDR |= GPIO_GPIO27; 568 569 /* 570 * Set up registers for sleep mode. 571 */ 572 PWER = PWER_GPIO0; 573 PGSR = 0; 574 PCFR = 0; 575 PSDR = 0; 576 PPDR |= PPC_TXD3 | PPC_TXD1; 577 PPSR |= PPC_TXD3 | PPC_TXD1; 578 579 sa11x0_ppc_configure_mcp(); 580 581 if (machine_has_neponset()) { 582#ifndef CONFIG_ASSABET_NEPONSET 583 printk( "Warning: Neponset detected but full support " 584 "hasn't been configured in the kernel\n" ); 585#else 586 platform_device_register_simple("neponset", 0, 587 neponset_resources, ARRAY_SIZE(neponset_resources)); 588#endif 589 } else { 590 gpiod_add_lookup_table(&assabet_uart1_gpio_table); 591 gpiod_add_lookup_table(&assabet_uart3_gpio_table); 592 gpiod_add_lookup_table(&assabet_cf_vcc_gpio_table); 593 594 sa11x0_register_fixed_regulator(0, &assabet_cf_vcc_pdata, 595 assabet_cf_vcc_consumers, 596 ARRAY_SIZE(assabet_cf_vcc_consumers), 597 true); 598 599 } 600 601 platform_device_register_resndata(NULL, "gpio-keys", 0, 602 NULL, 0, 603 &assabet_keys_pdata, 604 sizeof(assabet_keys_pdata)); 605 606 gpio_led_register_device(-1, &assabet_leds_pdata); 607 608#ifndef ASSABET_PAL_VIDEO 609 sa11x0_register_lcd(&lq039q2ds54_info); 610#else 611 sa11x0_register_lcd(&pal_video); 612#endif 613 sa11x0_register_mtd(&assabet_flash_data, assabet_flash_resources, 614 ARRAY_SIZE(assabet_flash_resources)); 615 sa11x0_register_irda(&assabet_irda_data); 616 sa11x0_register_mcp(&assabet_mcp_data); 617 618 if (!machine_has_neponset()) 619 sa11x0_register_pcmcia(1, &assabet_cf_gpio_table); 620} 621 622/* 623 * On Assabet, we must probe for the Neponset board _before_ 624 * paging_init() has occurred to actually determine the amount 625 * of RAM available. To do so, we map the appropriate IO section 626 * in the page table here in order to access GPIO registers. 627 */ 628static void __init map_sa1100_gpio_regs( void ) 629{ 630 unsigned long phys = __PREG(GPLR) & PMD_MASK; 631 unsigned long virt = (unsigned long)io_p2v(phys); 632 int prot = PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_DOMAIN(DOMAIN_IO); 633 pmd_t *pmd; 634 635 pmd = pmd_off_k(virt); 636 *pmd = __pmd(phys | prot); 637 flush_pmd_entry(pmd); 638} 639 640/* 641 * Read System Configuration "Register" 642 * (taken from "Intel StrongARM SA-1110 Microprocessor Development Board 643 * User's Guide", section 4.4.1) 644 * 645 * This same scan is performed in arch/arm/boot/compressed/head-sa1100.S 646 * to set up the serial port for decompression status messages. We 647 * repeat it here because the kernel may not be loaded as a zImage, and 648 * also because it's a hassle to communicate the SCR value to the kernel 649 * from the decompressor. 650 * 651 * Note that IRQs are guaranteed to be disabled. 652 */ 653static void __init get_assabet_scr(void) 654{ 655 unsigned long scr, i; 656 657 GPDR |= 0x3fc; /* Configure GPIO 9:2 as outputs */ 658 GPSR = 0x3fc; /* Write 0xFF to GPIO 9:2 */ 659 GPDR &= ~(0x3fc); /* Configure GPIO 9:2 as inputs */ 660 for(i = 100; i--; ) /* Read GPIO 9:2 */ 661 scr = GPLR; 662 GPDR |= 0x3fc; /* restore correct pin direction */ 663 scr &= 0x3fc; /* save as system configuration byte. */ 664 SCR_value = scr; 665} 666 667static void __init 668fixup_assabet(struct tag *tags, char **cmdline) 669{ 670 /* This must be done before any call to machine_has_neponset() */ 671 map_sa1100_gpio_regs(); 672 get_assabet_scr(); 673 674 if (machine_has_neponset()) 675 printk("Neponset expansion board detected\n"); 676} 677 678 679static void assabet_uart_pm(struct uart_port *port, u_int state, u_int oldstate) 680{ 681 if (port->mapbase == _Ser1UTCR0) { 682 if (state) 683 ASSABET_BCR_clear(ASSABET_BCR_RS232EN); 684 else 685 ASSABET_BCR_set(ASSABET_BCR_RS232EN); 686 } 687} 688 689static struct sa1100_port_fns assabet_port_fns __initdata = { 690 .pm = assabet_uart_pm, 691}; 692 693static struct map_desc assabet_io_desc[] __initdata = { 694 { /* Board Control Register */ 695 .virtual = 0xf1000000, 696 .pfn = __phys_to_pfn(0x12000000), 697 .length = 0x00100000, 698 .type = MT_DEVICE 699 }, { /* MQ200 */ 700 .virtual = 0xf2800000, 701 .pfn = __phys_to_pfn(0x4b800000), 702 .length = 0x00800000, 703 .type = MT_DEVICE 704 } 705}; 706 707static void __init assabet_map_io(void) 708{ 709 sa1100_map_io(); 710 iotable_init(assabet_io_desc, ARRAY_SIZE(assabet_io_desc)); 711 712 /* 713 * Set SUS bit in SDCR0 so serial port 1 functions. 714 * Its called GPCLKR0 in my SA1110 manual. 715 */ 716 Ser1SDCR0 |= SDCR0_SUS; 717 MSC1 = (MSC1 & ~0xffff) | 718 MSC_NonBrst | MSC_32BitStMem | 719 MSC_RdAcc(2) | MSC_WrAcc(2) | MSC_Rec(0); 720 721 if (!machine_has_neponset()) 722 sa1100_register_uart_fns(&assabet_port_fns); 723 724 /* 725 * When Neponset is attached, the first UART should be 726 * UART3. That's what Angel is doing and many documents 727 * are stating this. 728 * 729 * We do the Neponset mapping even if Neponset support 730 * isn't compiled in so the user will still get something on 731 * the expected physical serial port. 732 * 733 * We no longer do this; not all boot loaders support it, 734 * and UART3 appears to be somewhat unreliable with blob. 735 */ 736 sa1100_register_uart(0, 1); 737 sa1100_register_uart(2, 3); 738} 739 740void __init assabet_init_irq(void) 741{ 742 unsigned int assabet_gpio_base; 743 u32 def_val; 744 745 sa1100_init_irq(); 746 747 if (machine_has_neponset()) 748 def_val = ASSABET_BCR_DB1111; 749 else 750 def_val = ASSABET_BCR_DB1110; 751 752 /* 753 * Angel sets this, but other bootloaders may not. 754 * 755 * This must precede any driver calls to BCR_set() or BCR_clear(). 756 */ 757 assabet_gpio_base = assabet_init_gpio((void *)&ASSABET_BCR, def_val); 758 759 assabet_leds[0].gpio = assabet_gpio_base + 13; 760 assabet_leds[1].gpio = assabet_gpio_base + 14; 761} 762 763MACHINE_START(ASSABET, "Intel-Assabet") 764 .atag_offset = 0x100, 765 .fixup = fixup_assabet, 766 .map_io = assabet_map_io, 767 .nr_irqs = SA1100_NR_IRQS, 768 .init_irq = assabet_init_irq, 769 .init_time = sa1100_timer_init, 770 .init_machine = assabet_init, 771 .init_late = sa11x0_init_late, 772#ifdef CONFIG_SA1111 773 .dma_zone_size = SZ_1M, 774#endif 775 .restart = sa11x0_restart, 776MACHINE_END 777