arch/arm/mach-sa1100/h3600.c

   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/mtd/mtd.h>
  29 #include <linux/mtd/partitions.h>
  30 #include <linux/serial_core.h>
  31 #include <linux/gpio.h>
  32
  33 #include <asm/irq.h>
  34 #include <mach/hardware.h>
  35 #include <asm/mach-types.h>
  36 #include <asm/setup.h>
  37
  38 #include <asm/mach/irq.h>
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/flash.h>
  41 #include <asm/mach/irda.h>
  42 #include <asm/mach/map.h>
  43 #include <asm/mach/serial_sa1100.h>
  44
  45 #include <mach/h3600.h>
  46 #include <mach/h3600_gpio.h>
  47
  48 #include "generic.h"
  49
  50 void (*assign_h3600_egpio)(enum ipaq_egpio_type x, int level);
  51 EXPORT_SYMBOL(assign_h3600_egpio);
  52
  53 struct gpio_default_state {
  54         int gpio;
  55         int mode;
  56         const char *name;
  57 };
  58
  59 #define GPIO_MODE_IN    -1
  60 #define GPIO_MODE_OUT0  0
  61 #define GPIO_MODE_OUT1  1
  62
  63 static void h3xxx_init_gpio(struct gpio_default_state *s, size_t n)
  64 {
  65         while (n--) {
  66                 const char *name = s->name;
  67                 int err;
  68
  69                 if (!name)
  70                         name = "[init]";
  71                 err = gpio_request(s->gpio, name);
  72                 if (err) {
  73                         printk(KERN_ERR "gpio%u: unable to request: %d\n",
  74                                 s->gpio, err);
  75                         continue;
  76                 }
  77                 if (s->mode >= 0) {
  78                         err = gpio_direction_output(s->gpio, s->mode);
  79                 } else {
  80                         err = gpio_direction_input(s->gpio);
  81                 }
  82                 if (err) {
  83                         printk(KERN_ERR "gpio%u: unable to set direction: %d\n",
  84                                 s->gpio, err);
  85                         continue;
  86                 }
  87                 if (!s->name)
  88                         gpio_free(s->gpio);
  89                 s++;
  90         }
  91 }
  92
  93
  94 /*
  95  * H3xxx flash support
  96  */
  97 static struct mtd_partition h3xxx_partitions[] = {
  98         {
  99                 .name           = "H3XXX boot firmware",
 100                 .size           = 0x00040000,
 101                 .offset         = 0,
 102                 .mask_flags     = MTD_WRITEABLE,  /* force read-only */
 103         }, {
 104                 .name           = "H3XXX rootfs",
 105                 .size           = MTDPART_SIZ_FULL,
 106                 .offset         = 0x00040000,
 107         }
 108 };
 109
 110 static void h3xxx_set_vpp(int vpp)
 111 {
 112         assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, vpp);
 113 }
 114
 115 static struct flash_platform_data h3xxx_flash_data = {
 116         .map_name       = "cfi_probe",
 117         .set_vpp        = h3xxx_set_vpp,
 118         .parts          = h3xxx_partitions,
 119         .nr_parts       = ARRAY_SIZE(h3xxx_partitions),
 120 };
 121
 122 static struct resource h3xxx_flash_resource = {
 123         .start          = SA1100_CS0_PHYS,
 124         .end            = SA1100_CS0_PHYS + SZ_32M - 1,
 125         .flags          = IORESOURCE_MEM,
 126 };
 127
 128
 129 /*
 130  * H3xxx uart support
 131  */
 132 static void h3xxx_uart_set_mctrl(struct uart_port *port, u_int mctrl)
 133 {
 134         if (port->mapbase == _Ser3UTCR0) {
 135                 gpio_set_value(H3XXX_GPIO_COM_RTS, !(mctrl & TIOCM_RTS));
 136         }
 137 }
 138
 139 static u_int h3xxx_uart_get_mctrl(struct uart_port *port)
 140 {
 141         u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
 142
 143         if (port->mapbase == _Ser3UTCR0) {
 144                 /*
 145                  * DCD and CTS bits are inverted in GPLR by RS232 transceiver
 146                  */
 147                 if (gpio_get_value(H3XXX_GPIO_COM_DCD))
 148                         ret &= ~TIOCM_CD;
 149                 if (gpio_get_value(H3XXX_GPIO_COM_CTS))
 150                         ret &= ~TIOCM_CTS;
 151         }
 152
 153         return ret;
 154 }
 155
 156 static void h3xxx_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
 157 {
 158         if (port->mapbase == _Ser2UTCR0) { /* TODO: REMOVE THIS */
 159                 assign_h3600_egpio(IPAQ_EGPIO_IR_ON, !state);
 160         } else if (port->mapbase == _Ser3UTCR0) {
 161                 assign_h3600_egpio(IPAQ_EGPIO_RS232_ON, !state);
 162         }
 163 }
 164
 165 /*
 166  * Enable/Disable wake up events for this serial port.
 167  * Obviously, we only support this on the normal COM port.
 168  */
 169 static int h3xxx_uart_set_wake(struct uart_port *port, u_int enable)
 170 {
 171         int err = -EINVAL;
 172
 173         if (port->mapbase == _Ser3UTCR0) {
 174                 if (enable)
 175                         PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */
 176                 else
 177                         PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */
 178                 err = 0;
 179         }
 180         return err;
 181 }
 182
 183 static struct sa1100_port_fns h3xxx_port_fns __initdata = {
 184         .set_mctrl      = h3xxx_uart_set_mctrl,
 185         .get_mctrl      = h3xxx_uart_get_mctrl,
 186         .pm             = h3xxx_uart_pm,
 187         .set_wake       = h3xxx_uart_set_wake,
 188 };
 189
 190
 191 static void __init h3xxx_mach_init(void)
 192 {
 193         sa1100_register_uart_fns(&h3xxx_port_fns);
 194         sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1);
 195 }
 196
 197 /*
 198  * helper for sa1100fb
 199  */
 200 static void h3xxx_lcd_power(int enable)
 201 {
 202         assign_h3600_egpio(IPAQ_EGPIO_LCD_POWER, enable);
 203 }
 204
 205 static struct map_desc h3600_io_desc[] __initdata = {
 206         {       /* static memory bank 2  CS#2 */
 207                 .virtual        =  H3600_BANK_2_VIRT,
 208                 .pfn            = __phys_to_pfn(SA1100_CS2_PHYS),
 209                 .length         = 0x02800000,
 210                 .type           = MT_DEVICE
 211         }, {    /* static memory bank 4  CS#4 */
 212                 .virtual        =  H3600_BANK_4_VIRT,
 213                 .pfn            = __phys_to_pfn(SA1100_CS4_PHYS),
 214                 .length         = 0x00800000,
 215                 .type           = MT_DEVICE
 216         }, {    /* EGPIO 0              CS#5 */
 217                 .virtual        =  H3600_EGPIO_VIRT,
 218                 .pfn            = __phys_to_pfn(H3600_EGPIO_PHYS),
 219                 .length         = 0x01000000,
 220                 .type           = MT_DEVICE
 221         }
 222 };
 223
 224 /*
 225  * Common map_io initialization
 226  */
 227
 228 static void __init h3xxx_map_io(void)
 229 {
 230         sa1100_map_io();
 231         iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc));
 232
 233         sa1100_register_uart(0, 3); /* Common serial port */
 234 //      sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */
 235
 236         /* Ensure those pins are outputs and driving low  */
 237         PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
 238         PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
 239
 240         /* Configure suspend conditions */
 241         PGSR = 0;
 242         PWER = PWER_GPIO0;
 243         PCFR = PCFR_OPDE;
 244         PSDR = 0;
 245
 246         sa1100fb_lcd_power = h3xxx_lcd_power;
 247 }
 248
 249 /************************* H3100 *************************/
 250
 251 #ifdef CONFIG_SA1100_H3100
 252
 253 #define H3100_EGPIO     (*(volatile unsigned int *)H3600_EGPIO_VIRT)
 254 static unsigned int h3100_egpio = 0;
 255
 256 static void h3100_control_egpio(enum ipaq_egpio_type x, int setp)
 257 {
 258         unsigned int egpio = 0;
 259         long         gpio = 0;
 260         unsigned long flags;
 261
 262         switch (x) {
 263         case IPAQ_EGPIO_LCD_POWER:
 264                 egpio |= EGPIO_H3600_LCD_ON;
 265                 gpio  |= GPIO_H3100_LCD_3V_ON;
 266                 break;
 267         case IPAQ_EGPIO_LCD_ENABLE:
 268                 break;
 269         case IPAQ_EGPIO_CODEC_NRESET:
 270                 egpio |= EGPIO_H3600_CODEC_NRESET;
 271                 break;
 272         case IPAQ_EGPIO_AUDIO_ON:
 273                 gpio |= GPIO_H3100_AUD_PWR_ON
 274                         | GPIO_H3100_AUD_ON;
 275                 break;
 276         case IPAQ_EGPIO_QMUTE:
 277                 gpio |= GPIO_H3100_QMUTE;
 278                 break;
 279         case IPAQ_EGPIO_OPT_NVRAM_ON:
 280                 egpio |= EGPIO_H3600_OPT_NVRAM_ON;
 281                 break;
 282         case IPAQ_EGPIO_OPT_ON:
 283                 egpio |= EGPIO_H3600_OPT_ON;
 284                 break;
 285         case IPAQ_EGPIO_CARD_RESET:
 286                 egpio |= EGPIO_H3600_CARD_RESET;
 287                 break;
 288         case IPAQ_EGPIO_OPT_RESET:
 289                 egpio |= EGPIO_H3600_OPT_RESET;
 290                 break;
 291         case IPAQ_EGPIO_IR_ON:
 292                 gpio |= GPIO_H3100_IR_ON;
 293                 break;
 294         case IPAQ_EGPIO_IR_FSEL:
 295                 gpio |= GPIO_H3100_IR_FSEL;
 296                 break;
 297         case IPAQ_EGPIO_RS232_ON:
 298                 egpio |= EGPIO_H3600_RS232_ON;
 299                 break;
 300         case IPAQ_EGPIO_VPP_ON:
 301                 egpio |= EGPIO_H3600_VPP_ON;
 302                 break;
 303         }
 304
 305         if (egpio || gpio) {
 306                 local_irq_save(flags);
 307                 if (setp) {
 308                         h3100_egpio |= egpio;
 309                         GPSR = gpio;
 310                 } else {
 311                         h3100_egpio &= ~egpio;
 312                         GPCR = gpio;
 313                 }
 314                 H3100_EGPIO = h3100_egpio;
 315                 local_irq_restore(flags);
 316         }
 317 }
 318
 319 #define H3100_DIRECT_EGPIO (GPIO_H3100_BT_ON      \
 320                           | GPIO_H3100_GPIO3      \
 321                           | GPIO_H3100_QMUTE      \
 322                           | GPIO_H3100_LCD_3V_ON  \
 323                           | GPIO_H3100_AUD_ON     \
 324                           | GPIO_H3100_AUD_PWR_ON \
 325                           | GPIO_H3100_IR_ON      \
 326                           | GPIO_H3100_IR_FSEL)
 327
 328 static void __init h3100_map_io(void)
 329 {
 330         h3xxx_map_io();
 331
 332         /* Initialize h3100-specific values here */
 333         GPCR = 0x0fffffff;       /* All outputs are set low by default */
 334         GPDR = GPIO_H3600_L3_CLOCK |
 335                GPIO_H3600_L3_MODE  | GPIO_H3600_L3_DATA  |
 336                GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0 |
 337                H3100_DIRECT_EGPIO;
 338
 339         /* Older bootldrs put GPIO2-9 in alternate mode on the
 340            assumption that they are used for video */
 341         GAFR &= ~H3100_DIRECT_EGPIO;
 342
 343         H3100_EGPIO = h3100_egpio;
 344         assign_h3600_egpio = h3100_control_egpio;
 345 }
 346
 347 /*
 348  * This turns the IRDA power on or off on the Compaq H3100
 349  */
 350 static int h3100_irda_set_power(struct device *dev, unsigned int state)
 351 {
 352         gpio_set_value(H3100_GPIO_IR_ON, state);
 353         return 0;
 354 }
 355
 356 static void h3100_irda_set_speed(struct device *dev, unsigned int speed)
 357 {
 358         gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000));
 359 }
 360
 361 static struct irda_platform_data h3100_irda_data = {
 362         .set_power      = h3100_irda_set_power,
 363         .set_speed      = h3100_irda_set_speed,
 364 };
 365
 366 static struct gpio_default_state h3100_default_gpio[] = {
 367         { H3100_GPIO_IR_ON,     GPIO_MODE_OUT0, "IrDA power" },
 368         { H3100_GPIO_IR_FSEL,   GPIO_MODE_OUT0, "IrDA fsel" },
 369         { H3XXX_GPIO_COM_DCD,   GPIO_MODE_IN,   "COM DCD" },
 370         { H3XXX_GPIO_COM_CTS,   GPIO_MODE_IN,   "COM CTS" },
 371         { H3XXX_GPIO_COM_RTS,   GPIO_MODE_OUT0, "COM RTS" },
 372 };
 373
 374 static void __init h3100_mach_init(void)
 375 {
 376         h3xxx_init_gpio(h3100_default_gpio, ARRAY_SIZE(h3100_default_gpio));
 377         h3xxx_mach_init();
 378         sa11x0_register_irda(&h3100_irda_data);
 379 }
 380
 381 MACHINE_START(H3100, "Compaq iPAQ H3100")
 382         .phys_io        = 0x80000000,
 383         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 384         .boot_params    = 0xc0000100,
 385         .map_io         = h3100_map_io,
 386         .init_irq       = sa1100_init_irq,
 387         .timer          = &sa1100_timer,
 388         .init_machine   = h3100_mach_init,
 389 MACHINE_END
 390
 391 #endif /* CONFIG_SA1100_H3100 */
 392
 393 /************************* H3600 *************************/
 394
 395 #ifdef CONFIG_SA1100_H3600
 396
 397 #define H3600_EGPIO     (*(volatile unsigned int *)H3600_EGPIO_VIRT)
 398 static unsigned int h3600_egpio = EGPIO_H3600_RS232_ON;
 399
 400 static void h3600_control_egpio(enum ipaq_egpio_type x, int setp)
 401 {
 402         unsigned int egpio = 0;
 403         unsigned long flags;
 404
 405         switch (x) {
 406         case IPAQ_EGPIO_LCD_POWER:
 407                 egpio |= EGPIO_H3600_LCD_ON |
 408                          EGPIO_H3600_LCD_PCI |
 409                          EGPIO_H3600_LCD_5V_ON |
 410                          EGPIO_H3600_LVDD_ON;
 411                 break;
 412         case IPAQ_EGPIO_LCD_ENABLE:
 413                 break;
 414         case IPAQ_EGPIO_CODEC_NRESET:
 415                 egpio |= EGPIO_H3600_CODEC_NRESET;
 416                 break;
 417         case IPAQ_EGPIO_AUDIO_ON:
 418                 egpio |= EGPIO_H3600_AUD_AMP_ON |
 419                          EGPIO_H3600_AUD_PWR_ON;
 420                 break;
 421         case IPAQ_EGPIO_QMUTE:
 422                 egpio |= EGPIO_H3600_QMUTE;
 423                 break;
 424         case IPAQ_EGPIO_OPT_NVRAM_ON:
 425                 egpio |= EGPIO_H3600_OPT_NVRAM_ON;
 426                 break;
 427         case IPAQ_EGPIO_OPT_ON:
 428                 egpio |= EGPIO_H3600_OPT_ON;
 429                 break;
 430         case IPAQ_EGPIO_CARD_RESET:
 431                 egpio |= EGPIO_H3600_CARD_RESET;
 432                 break;
 433         case IPAQ_EGPIO_OPT_RESET:
 434                 egpio |= EGPIO_H3600_OPT_RESET;
 435                 break;
 436         case IPAQ_EGPIO_IR_ON:
 437                 egpio |= EGPIO_H3600_IR_ON;
 438                 break;
 439         case IPAQ_EGPIO_IR_FSEL:
 440                 egpio |= EGPIO_H3600_IR_FSEL;
 441                 break;
 442         case IPAQ_EGPIO_RS232_ON:
 443                 egpio |= EGPIO_H3600_RS232_ON;
 444                 break;
 445         case IPAQ_EGPIO_VPP_ON:
 446                 egpio |= EGPIO_H3600_VPP_ON;
 447                 break;
 448         }
 449
 450         if (egpio) {
 451                 local_irq_save(flags);
 452                 if (setp)
 453                         h3600_egpio |= egpio;
 454                 else
 455                         h3600_egpio &= ~egpio;
 456                 H3600_EGPIO = h3600_egpio;
 457                 local_irq_restore(flags);
 458         }
 459 }
 460
 461 static void __init h3600_map_io(void)
 462 {
 463         h3xxx_map_io();
 464
 465         /* Initialize h3600-specific values here */
 466
 467         GPCR = 0x0fffffff;       /* All outputs are set low by default */
 468         GPDR = GPIO_H3600_L3_CLOCK |
 469                GPIO_H3600_L3_MODE  | GPIO_H3600_L3_DATA  |
 470                GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0 |
 471                GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12 |
 472                GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9  | GPIO_LDD8;
 473
 474         H3600_EGPIO = h3600_egpio;         /* Maintains across sleep? */
 475         assign_h3600_egpio = h3600_control_egpio;
 476 }
 477
 478 /*
 479  * This turns the IRDA power on or off on the Compaq H3600
 480  */
 481 static int h3600_irda_set_power(struct device *dev, unsigned int state)
 482 {
 483         assign_h3600_egpio(IPAQ_EGPIO_IR_ON, state);
 484         return 0;
 485 }
 486
 487 static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
 488 {
 489         assign_h3600_egpio(IPAQ_EGPIO_IR_FSEL, !(speed < 4000000));
 490 }
 491
 492 static struct irda_platform_data h3600_irda_data = {
 493         .set_power      = h3600_irda_set_power,
 494         .set_speed      = h3600_irda_set_speed,
 495 };
 496
 497 static struct gpio_default_state h3600_default_gpio[] = {
 498         { H3XXX_GPIO_COM_DCD,   GPIO_MODE_IN,   "COM DCD" },
 499         { H3XXX_GPIO_COM_CTS,   GPIO_MODE_IN,   "COM CTS" },
 500         { H3XXX_GPIO_COM_RTS,   GPIO_MODE_OUT0, "COM RTS" },
 501 };
 502
 503 static void __init h3600_mach_init(void)
 504 {
 505         h3xxx_init_gpio(h3600_default_gpio, ARRAY_SIZE(h3600_default_gpio));
 506         h3xxx_mach_init();
 507         sa11x0_register_irda(&h3600_irda_data);
 508 }
 509
 510 MACHINE_START(H3600, "Compaq iPAQ H3600")
 511         .phys_io        = 0x80000000,
 512         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 513         .boot_params    = 0xc0000100,
 514         .map_io         = h3600_map_io,
 515         .init_irq       = sa1100_init_irq,
 516         .timer          = &sa1100_timer,
 517         .init_machine   = h3600_mach_init,
 518 MACHINE_END
 519
 520 #endif /* CONFIG_SA1100_H3600 */
 521