1 /* 2 * Hardware definitions for Compaq iPAQ H3xxx Handheld Computers 3 * 4 * Copyright 2000,1 Compaq Computer Corporation. 5 * 6 * Use consistent with the GNU GPL is permitted, 7 * provided that this copyright notice is 8 * preserved in its entirety in all copies and derived works. 9 * 10 * COMPAQ COMPUTER CORPORATION MAKES NO WARRANTIES, EXPRESSED OR IMPLIED, 11 * AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS 12 * FITNESS FOR ANY PARTICULAR PURPOSE. 13 * 14 * Author: Jamey Hicks. 15 * 16 * History: 17 * 18 * 2001-10-?? Andrew Christian Added support for iPAQ H3800 19 * and abstracted EGPIO interface. 20 * 21 */ 22 #include <linux/module.h> 23 #include <linux/init.h> 24 #include <linux/kernel.h> 25 #include <linux/tty.h> 26 #include <linux/pm.h> 27 #include <linux/device.h> 28 #include <linux/mfd/htc-egpio.h> 29 #include <linux/mtd/mtd.h> 30 #include <linux/mtd/partitions.h> 31 #include <linux/serial_core.h> 32 #include <linux/gpio.h> 33 #include <linux/platform_device.h> 34 35 #include <asm/irq.h> 36 #include <mach/hardware.h> 37 #include <asm/mach-types.h> 38 #include <asm/setup.h> 39 40 #include <asm/mach/irq.h> 41 #include <asm/mach/arch.h> 42 #include <asm/mach/flash.h> 43 #include <asm/mach/irda.h> 44 #include <asm/mach/map.h> 45 #include <asm/mach/serial_sa1100.h> 46 47 #include <mach/h3600.h> 48 #include <mach/h3600_gpio.h> 49 50 #include "generic.h" 51 52 struct gpio_default_state { 53 int gpio; 54 int mode; 55 const char *name; 56 }; 57 58 #define GPIO_MODE_IN -1 59 #define GPIO_MODE_OUT0 0 60 #define GPIO_MODE_OUT1 1 61 62 static void h3xxx_init_gpio(struct gpio_default_state *s, size_t n) 63 { 64 while (n--) { 65 const char *name = s->name; 66 int err; 67 68 if (!name) 69 name = "[init]"; 70 err = gpio_request(s->gpio, name); 71 if (err) { 72 printk(KERN_ERR "gpio%u: unable to request: %d\n", 73 s->gpio, err); 74 continue; 75 } 76 if (s->mode >= 0) { 77 err = gpio_direction_output(s->gpio, s->mode); 78 } else { 79 err = gpio_direction_input(s->gpio); 80 } 81 if (err) { 82 printk(KERN_ERR "gpio%u: unable to set direction: %d\n", 83 s->gpio, err); 84 continue; 85 } 86 if (!s->name) 87 gpio_free(s->gpio); 88 s++; 89 } 90 } 91 92 93 /* 94 * H3xxx flash support 95 */ 96 static struct mtd_partition h3xxx_partitions[] = { 97 { 98 .name = "H3XXX boot firmware", 99 .size = 0x00040000, 100 .offset = 0, 101 .mask_flags = MTD_WRITEABLE, /* force read-only */ 102 }, { 103 .name = "H3XXX rootfs", 104 .size = MTDPART_SIZ_FULL, 105 .offset = 0x00040000, 106 } 107 }; 108 109 static void h3xxx_set_vpp(int vpp) 110 { 111 gpio_set_value(H3XXX_EGPIO_VPP_ON, vpp); 112 } 113 114 static int h3xxx_flash_init(void) 115 { 116 int err = gpio_request(H3XXX_EGPIO_VPP_ON, "Flash Vpp"); 117 if (err) 118 return err; 119 120 err = gpio_direction_output(H3XXX_EGPIO_VPP_ON, 0); 121 if (err) 122 gpio_free(H3XXX_EGPIO_VPP_ON); 123 124 return err; 125 } 126 127 static void h3xxx_flash_exit(void) 128 { 129 gpio_free(H3XXX_EGPIO_VPP_ON); 130 } 131 132 static struct flash_platform_data h3xxx_flash_data = { 133 .map_name = "cfi_probe", 134 .set_vpp = h3xxx_set_vpp, 135 .init = h3xxx_flash_init, 136 .exit = h3xxx_flash_exit, 137 .parts = h3xxx_partitions, 138 .nr_parts = ARRAY_SIZE(h3xxx_partitions), 139 }; 140 141 static struct resource h3xxx_flash_resource = { 142 .start = SA1100_CS0_PHYS, 143 .end = SA1100_CS0_PHYS + SZ_32M - 1, 144 .flags = IORESOURCE_MEM, 145 }; 146 147 148 /* 149 * H3xxx uart support 150 */ 151 static void h3xxx_uart_set_mctrl(struct uart_port *port, u_int mctrl) 152 { 153 if (port->mapbase == _Ser3UTCR0) { 154 gpio_set_value(H3XXX_GPIO_COM_RTS, !(mctrl & TIOCM_RTS)); 155 } 156 } 157 158 static u_int h3xxx_uart_get_mctrl(struct uart_port *port) 159 { 160 u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR; 161 162 if (port->mapbase == _Ser3UTCR0) { 163 /* 164 * DCD and CTS bits are inverted in GPLR by RS232 transceiver 165 */ 166 if (gpio_get_value(H3XXX_GPIO_COM_DCD)) 167 ret &= ~TIOCM_CD; 168 if (gpio_get_value(H3XXX_GPIO_COM_CTS)) 169 ret &= ~TIOCM_CTS; 170 } 171 172 return ret; 173 } 174 175 static void h3xxx_uart_pm(struct uart_port *port, u_int state, u_int oldstate) 176 { 177 if (port->mapbase == _Ser3UTCR0) 178 if (!gpio_request(H3XXX_EGPIO_RS232_ON, "RS232 transceiver")) { 179 gpio_direction_output(H3XXX_EGPIO_RS232_ON, !state); 180 gpio_free(H3XXX_EGPIO_RS232_ON); 181 } 182 } 183 184 /* 185 * Enable/Disable wake up events for this serial port. 186 * Obviously, we only support this on the normal COM port. 187 */ 188 static int h3xxx_uart_set_wake(struct uart_port *port, u_int enable) 189 { 190 int err = -EINVAL; 191 192 if (port->mapbase == _Ser3UTCR0) { 193 if (enable) 194 PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */ 195 else 196 PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */ 197 err = 0; 198 } 199 return err; 200 } 201 202 static struct sa1100_port_fns h3xxx_port_fns __initdata = { 203 .set_mctrl = h3xxx_uart_set_mctrl, 204 .get_mctrl = h3xxx_uart_get_mctrl, 205 .pm = h3xxx_uart_pm, 206 .set_wake = h3xxx_uart_set_wake, 207 }; 208 209 /* 210 * EGPIO 211 */ 212 213 static struct resource egpio_resources[] = { 214 [0] = { 215 .start = H3600_EGPIO_PHYS, 216 .end = H3600_EGPIO_PHYS + 0x4 - 1, 217 .flags = IORESOURCE_MEM, 218 }, 219 }; 220 221 static struct htc_egpio_chip egpio_chips[] = { 222 [0] = { 223 .reg_start = 0, 224 .gpio_base = H3XXX_EGPIO_BASE, 225 .num_gpios = 16, 226 .direction = HTC_EGPIO_OUTPUT, 227 .initial_values = 0x0080, /* H3XXX_EGPIO_RS232_ON */ 228 }, 229 }; 230 231 static struct htc_egpio_platform_data egpio_info = { 232 .reg_width = 16, 233 .bus_width = 16, 234 .chip = egpio_chips, 235 .num_chips = ARRAY_SIZE(egpio_chips), 236 }; 237 238 static struct platform_device h3xxx_egpio = { 239 .name = "htc-egpio", 240 .id = -1, 241 .resource = egpio_resources, 242 .num_resources = ARRAY_SIZE(egpio_resources), 243 .dev = { 244 .platform_data = &egpio_info, 245 }, 246 }; 247 248 static struct platform_device *h3xxx_devices[] = { 249 &h3xxx_egpio, 250 }; 251 252 static void __init h3xxx_mach_init(void) 253 { 254 sa1100_register_uart_fns(&h3xxx_port_fns); 255 sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1); 256 platform_add_devices(h3xxx_devices, ARRAY_SIZE(h3xxx_devices)); 257 } 258 259 static struct map_desc h3600_io_desc[] __initdata = { 260 { /* static memory bank 2 CS#2 */ 261 .virtual = H3600_BANK_2_VIRT, 262 .pfn = __phys_to_pfn(SA1100_CS2_PHYS), 263 .length = 0x02800000, 264 .type = MT_DEVICE 265 }, { /* static memory bank 4 CS#4 */ 266 .virtual = H3600_BANK_4_VIRT, 267 .pfn = __phys_to_pfn(SA1100_CS4_PHYS), 268 .length = 0x00800000, 269 .type = MT_DEVICE 270 }, { /* EGPIO 0 CS#5 */ 271 .virtual = H3600_EGPIO_VIRT, 272 .pfn = __phys_to_pfn(H3600_EGPIO_PHYS), 273 .length = 0x01000000, 274 .type = MT_DEVICE 275 } 276 }; 277 278 /* 279 * Common map_io initialization 280 */ 281 282 static void __init h3xxx_map_io(void) 283 { 284 sa1100_map_io(); 285 iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc)); 286 287 sa1100_register_uart(0, 3); /* Common serial port */ 288 // sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */ 289 290 /* Ensure those pins are outputs and driving low */ 291 PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM; 292 PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); 293 294 /* Configure suspend conditions */ 295 PGSR = 0; 296 PWER = PWER_GPIO0; 297 PCFR = PCFR_OPDE; 298 PSDR = 0; 299 300 } 301 302 /************************* H3100 *************************/ 303 304 #ifdef CONFIG_SA1100_H3100 305 306 #define H3100_DIRECT_EGPIO (GPIO_H3100_BT_ON \ 307 | GPIO_H3100_GPIO3 \ 308 | GPIO_H3100_QMUTE \ 309 | GPIO_H3100_LCD_3V_ON \ 310 | GPIO_H3100_AUD_ON \ 311 | GPIO_H3100_AUD_PWR_ON \ 312 | GPIO_H3100_IR_ON \ 313 | GPIO_H3100_IR_FSEL) 314 /* 315 * helper for sa1100fb 316 */ 317 static void h3100_lcd_power(int enable) 318 { 319 if (!gpio_request(H3XXX_EGPIO_LCD_ON, "LCD ON")) { 320 gpio_set_value(H3100_GPIO_LCD_3V_ON, enable); 321 gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable); 322 gpio_free(H3XXX_EGPIO_LCD_ON); 323 } 324 } 325 326 327 static void __init h3100_map_io(void) 328 { 329 h3xxx_map_io(); 330 331 sa1100fb_lcd_power = h3100_lcd_power; 332 333 /* Initialize h3100-specific values here */ 334 GPCR = 0x0fffffff; /* All outputs are set low by default */ 335 GPDR = GPIO_H3600_L3_CLOCK | 336 GPIO_H3600_L3_MODE | GPIO_H3600_L3_DATA | 337 GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0 | 338 H3100_DIRECT_EGPIO; 339 340 /* Older bootldrs put GPIO2-9 in alternate mode on the 341 assumption that they are used for video */ 342 GAFR &= ~H3100_DIRECT_EGPIO; 343 } 344 345 /* 346 * This turns the IRDA power on or off on the Compaq H3100 347 */ 348 static int h3100_irda_set_power(struct device *dev, unsigned int state) 349 { 350 gpio_set_value(H3100_GPIO_IR_ON, state); 351 return 0; 352 } 353 354 static void h3100_irda_set_speed(struct device *dev, unsigned int speed) 355 { 356 gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000)); 357 } 358 359 static struct irda_platform_data h3100_irda_data = { 360 .set_power = h3100_irda_set_power, 361 .set_speed = h3100_irda_set_speed, 362 }; 363 364 static struct gpio_default_state h3100_default_gpio[] = { 365 { H3100_GPIO_IR_ON, GPIO_MODE_OUT0, "IrDA power" }, 366 { H3100_GPIO_IR_FSEL, GPIO_MODE_OUT0, "IrDA fsel" }, 367 { H3XXX_GPIO_COM_DCD, GPIO_MODE_IN, "COM DCD" }, 368 { H3XXX_GPIO_COM_CTS, GPIO_MODE_IN, "COM CTS" }, 369 { H3XXX_GPIO_COM_RTS, GPIO_MODE_OUT0, "COM RTS" }, 370 { H3100_GPIO_LCD_3V_ON, GPIO_MODE_OUT0, "LCD 3v" }, 371 }; 372 373 static void __init h3100_mach_init(void) 374 { 375 h3xxx_init_gpio(h3100_default_gpio, ARRAY_SIZE(h3100_default_gpio)); 376 h3xxx_mach_init(); 377 sa11x0_register_irda(&h3100_irda_data); 378 } 379 380 MACHINE_START(H3100, "Compaq iPAQ H3100") 381 .phys_io = 0x80000000, 382 .io_pg_offst = ((0xf8000000) >> 18) & 0xfffc, 383 .boot_params = 0xc0000100, 384 .map_io = h3100_map_io, 385 .init_irq = sa1100_init_irq, 386 .timer = &sa1100_timer, 387 .init_machine = h3100_mach_init, 388 MACHINE_END 389 390 #endif /* CONFIG_SA1100_H3100 */ 391 392 /************************* H3600 *************************/ 393 394 #ifdef CONFIG_SA1100_H3600 395 396 /* 397 * helper for sa1100fb 398 */ 399 static void h3600_lcd_power(int enable) 400 { 401 if (gpio_request(H3XXX_EGPIO_LCD_ON, "LCD power")) 402 goto err1; 403 if (gpio_request(H3600_EGPIO_LCD_PCI, "LCD control")) 404 goto err2; 405 if (gpio_request(H3600_EGPIO_LCD_5V_ON, "LCD 5v")) 406 goto err3; 407 if (gpio_request(H3600_EGPIO_LVDD_ON, "LCD 9v/-6.5v")) 408 goto err4; 409 410 gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable); 411 gpio_direction_output(H3600_EGPIO_LCD_PCI, enable); 412 gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable); 413 gpio_direction_output(H3600_EGPIO_LVDD_ON, enable); 414 415 gpio_free(H3600_EGPIO_LVDD_ON); 416 err4: gpio_free(H3600_EGPIO_LCD_5V_ON); 417 err3: gpio_free(H3600_EGPIO_LCD_PCI); 418 err2: gpio_free(H3XXX_EGPIO_LCD_ON); 419 err1: return; 420 } 421 422 static void __init h3600_map_io(void) 423 { 424 h3xxx_map_io(); 425 426 sa1100fb_lcd_power = h3600_lcd_power; 427 428 /* Initialize h3600-specific values here */ 429 430 GPCR = 0x0fffffff; /* All outputs are set low by default */ 431 GPDR = GPIO_H3600_L3_CLOCK | 432 GPIO_H3600_L3_MODE | GPIO_H3600_L3_DATA | 433 GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0; 434 } 435 436 /* 437 * This turns the IRDA power on or off on the Compaq H3600 438 */ 439 static int h3600_irda_set_power(struct device *dev, unsigned int state) 440 { 441 gpio_set_value(H3600_EGPIO_IR_ON, state); 442 return 0; 443 } 444 445 static void h3600_irda_set_speed(struct device *dev, unsigned int speed) 446 { 447 gpio_set_value(H3600_EGPIO_IR_FSEL, !(speed < 4000000)); 448 } 449 450 static int h3600_irda_startup(struct device *dev) 451 { 452 int err = gpio_request(H3600_EGPIO_IR_ON, "IrDA power"); 453 if (err) 454 goto err1; 455 err = gpio_direction_output(H3600_EGPIO_IR_ON, 0); 456 if (err) 457 goto err2; 458 err = gpio_request(H3600_EGPIO_IR_FSEL, "IrDA fsel"); 459 if (err) 460 goto err2; 461 err = gpio_direction_output(H3600_EGPIO_IR_FSEL, 0); 462 if (err) 463 goto err3; 464 return 0; 465 466 err3: gpio_free(H3600_EGPIO_IR_FSEL); 467 err2: gpio_free(H3600_EGPIO_IR_ON); 468 err1: return err; 469 } 470 471 static void h3600_irda_shutdown(struct device *dev) 472 { 473 gpio_free(H3600_EGPIO_IR_ON); 474 gpio_free(H3600_EGPIO_IR_FSEL); 475 } 476 477 static struct irda_platform_data h3600_irda_data = { 478 .set_power = h3600_irda_set_power, 479 .set_speed = h3600_irda_set_speed, 480 .startup = h3600_irda_startup, 481 .shutdown = h3600_irda_shutdown, 482 }; 483 484 static struct gpio_default_state h3600_default_gpio[] = { 485 { H3XXX_GPIO_COM_DCD, GPIO_MODE_IN, "COM DCD" }, 486 { H3XXX_GPIO_COM_CTS, GPIO_MODE_IN, "COM CTS" }, 487 { H3XXX_GPIO_COM_RTS, GPIO_MODE_OUT0, "COM RTS" }, 488 }; 489 490 static void __init h3600_mach_init(void) 491 { 492 h3xxx_init_gpio(h3600_default_gpio, ARRAY_SIZE(h3600_default_gpio)); 493 h3xxx_mach_init(); 494 sa11x0_register_irda(&h3600_irda_data); 495 } 496 497 MACHINE_START(H3600, "Compaq iPAQ H3600") 498 .phys_io = 0x80000000, 499 .io_pg_offst = ((0xf8000000) >> 18) & 0xfffc, 500 .boot_params = 0xc0000100, 501 .map_io = h3600_map_io, 502 .init_irq = sa1100_init_irq, 503 .timer = &sa1100_timer, 504 .init_machine = h3600_mach_init, 505 MACHINE_END 506 507 #endif /* CONFIG_SA1100_H3600 */ 508 509