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 static struct mtd_partition h3xxx_partitions[] = {
  95         {
  96                 .name           = "H3XXX boot firmware",
  97                 .size           = 0x00040000,
  98                 .offset         = 0,
  99                 .mask_flags     = MTD_WRITEABLE,  /* force read-only */
 100         }, {
 101                 .name           = "H3XXX rootfs",
 102                 .size           = MTDPART_SIZ_FULL,
 103                 .offset         = 0x00040000,
 104         }
 105 };
 106
 107 static void h3xxx_set_vpp(int vpp)
 108 {
 109         assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, vpp);
 110 }
 111
 112 static struct flash_platform_data h3xxx_flash_data = {
 113         .map_name       = "cfi_probe",
 114         .set_vpp        = h3xxx_set_vpp,
 115         .parts          = h3xxx_partitions,
 116         .nr_parts       = ARRAY_SIZE(h3xxx_partitions),
 117 };
 118
 119 static struct resource h3xxx_flash_resource = {
 120         .start          = SA1100_CS0_PHYS,
 121         .end            = SA1100_CS0_PHYS + SZ_32M - 1,
 122         .flags          = IORESOURCE_MEM,
 123 };
 124
 125 static void h3xxx_mach_init(void)
 126 {
 127         sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1);
 128 }
 129
 130 /*
 131  * low-level UART features
 132  */
 133
 134 static void h3600_uart_set_mctrl(struct uart_port *port, u_int mctrl)
 135 {
 136         if (port->mapbase == _Ser3UTCR0) {
 137                 if (mctrl & TIOCM_RTS)
 138                         GPCR = GPIO_H3600_COM_RTS;
 139                 else
 140                         GPSR = GPIO_H3600_COM_RTS;
 141         }
 142 }
 143
 144 static u_int h3600_uart_get_mctrl(struct uart_port *port)
 145 {
 146         u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
 147
 148         if (port->mapbase == _Ser3UTCR0) {
 149                 int gplr = GPLR;
 150                 /* DCD and CTS bits are inverted in GPLR by RS232 transceiver */
 151                 if (gplr & GPIO_H3600_COM_DCD)
 152                         ret &= ~TIOCM_CD;
 153                 if (gplr & GPIO_H3600_COM_CTS)
 154                         ret &= ~TIOCM_CTS;
 155         }
 156
 157         return ret;
 158 }
 159
 160 static void h3600_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
 161 {
 162         if (port->mapbase == _Ser2UTCR0) { /* TODO: REMOVE THIS */
 163                 assign_h3600_egpio(IPAQ_EGPIO_IR_ON, !state);
 164         } else if (port->mapbase == _Ser3UTCR0) {
 165                 assign_h3600_egpio(IPAQ_EGPIO_RS232_ON, !state);
 166         }
 167 }
 168
 169 /*
 170  * Enable/Disable wake up events for this serial port.
 171  * Obviously, we only support this on the normal COM port.
 172  */
 173 static int h3600_uart_set_wake(struct uart_port *port, u_int enable)
 174 {
 175         int err = -EINVAL;
 176
 177         if (port->mapbase == _Ser3UTCR0) {
 178                 if (enable)
 179                         PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */
 180                 else
 181                         PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */
 182                 err = 0;
 183         }
 184         return err;
 185 }
 186
 187 static struct sa1100_port_fns h3600_port_fns __initdata = {
 188         .set_mctrl      = h3600_uart_set_mctrl,
 189         .get_mctrl      = h3600_uart_get_mctrl,
 190         .pm             = h3600_uart_pm,
 191         .set_wake       = h3600_uart_set_wake,
 192 };
 193
 194 /*
 195  * helper for sa1100fb
 196  */
 197 static void h3xxx_lcd_power(int enable)
 198 {
 199         assign_h3600_egpio(IPAQ_EGPIO_LCD_POWER, enable);
 200 }
 201
 202 static struct map_desc h3600_io_desc[] __initdata = {
 203         {       /* static memory bank 2  CS#2 */
 204                 .virtual        =  H3600_BANK_2_VIRT,
 205                 .pfn            = __phys_to_pfn(SA1100_CS2_PHYS),
 206                 .length         = 0x02800000,
 207                 .type           = MT_DEVICE
 208         }, {    /* static memory bank 4  CS#4 */
 209                 .virtual        =  H3600_BANK_4_VIRT,
 210                 .pfn            = __phys_to_pfn(SA1100_CS4_PHYS),
 211                 .length         = 0x00800000,
 212                 .type           = MT_DEVICE
 213         }, {    /* EGPIO 0              CS#5 */
 214                 .virtual        =  H3600_EGPIO_VIRT,
 215                 .pfn            = __phys_to_pfn(H3600_EGPIO_PHYS),
 216                 .length         = 0x01000000,
 217                 .type           = MT_DEVICE
 218         }
 219 };
 220
 221 /*
 222  * Common map_io initialization
 223  */
 224
 225 static void __init h3xxx_map_io(void)
 226 {
 227         sa1100_map_io();
 228         iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc));
 229
 230         sa1100_register_uart_fns(&h3600_port_fns);
 231         sa1100_register_uart(0, 3); /* Common serial port */
 232 //      sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */
 233
 234         /* Ensure those pins are outputs and driving low  */
 235         PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
 236         PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
 237
 238         /* Configure suspend conditions */
 239         PGSR = 0;
 240         PWER = PWER_GPIO0 | PWER_RTC;
 241         PCFR = PCFR_OPDE;
 242         PSDR = 0;
 243
 244         sa1100fb_lcd_power = h3xxx_lcd_power;
 245 }
 246
 247 /************************* H3100 *************************/
 248
 249 #ifdef CONFIG_SA1100_H3100
 250
 251 #define H3100_EGPIO     (*(volatile unsigned int *)H3600_EGPIO_VIRT)
 252 static unsigned int h3100_egpio = 0;
 253
 254 static void h3100_control_egpio(enum ipaq_egpio_type x, int setp)
 255 {
 256         unsigned int egpio = 0;
 257         long         gpio = 0;
 258         unsigned long flags;
 259
 260         switch (x) {
 261         case IPAQ_EGPIO_LCD_POWER:
 262                 egpio |= EGPIO_H3600_LCD_ON;
 263                 gpio  |= GPIO_H3100_LCD_3V_ON;
 264                 break;
 265         case IPAQ_EGPIO_LCD_ENABLE:
 266                 break;
 267         case IPAQ_EGPIO_CODEC_NRESET:
 268                 egpio |= EGPIO_H3600_CODEC_NRESET;
 269                 break;
 270         case IPAQ_EGPIO_AUDIO_ON:
 271                 gpio |= GPIO_H3100_AUD_PWR_ON
 272                         | GPIO_H3100_AUD_ON;
 273                 break;
 274         case IPAQ_EGPIO_QMUTE:
 275                 gpio |= GPIO_H3100_QMUTE;
 276                 break;
 277         case IPAQ_EGPIO_OPT_NVRAM_ON:
 278                 egpio |= EGPIO_H3600_OPT_NVRAM_ON;
 279                 break;
 280         case IPAQ_EGPIO_OPT_ON:
 281                 egpio |= EGPIO_H3600_OPT_ON;
 282                 break;
 283         case IPAQ_EGPIO_CARD_RESET:
 284                 egpio |= EGPIO_H3600_CARD_RESET;
 285                 break;
 286         case IPAQ_EGPIO_OPT_RESET:
 287                 egpio |= EGPIO_H3600_OPT_RESET;
 288                 break;
 289         case IPAQ_EGPIO_IR_ON:
 290                 gpio |= GPIO_H3100_IR_ON;
 291                 break;
 292         case IPAQ_EGPIO_IR_FSEL:
 293                 gpio |= GPIO_H3100_IR_FSEL;
 294                 break;
 295         case IPAQ_EGPIO_RS232_ON:
 296                 egpio |= EGPIO_H3600_RS232_ON;
 297                 break;
 298         case IPAQ_EGPIO_VPP_ON:
 299                 egpio |= EGPIO_H3600_VPP_ON;
 300                 break;
 301         }
 302
 303         if (egpio || gpio) {
 304                 local_irq_save(flags);
 305                 if (setp) {
 306                         h3100_egpio |= egpio;
 307                         GPSR = gpio;
 308                 } else {
 309                         h3100_egpio &= ~egpio;
 310                         GPCR = gpio;
 311                 }
 312                 H3100_EGPIO = h3100_egpio;
 313                 local_irq_restore(flags);
 314         }
 315 }
 316
 317 #define H3100_DIRECT_EGPIO (GPIO_H3100_BT_ON      \
 318                           | GPIO_H3100_GPIO3      \
 319                           | GPIO_H3100_QMUTE      \
 320                           | GPIO_H3100_LCD_3V_ON  \
 321                           | GPIO_H3100_AUD_ON     \
 322                           | GPIO_H3100_AUD_PWR_ON \
 323                           | GPIO_H3100_IR_ON      \
 324                           | GPIO_H3100_IR_FSEL)
 325
 326 static void __init h3100_map_io(void)
 327 {
 328         h3xxx_map_io();
 329
 330         /* Initialize h3100-specific values here */
 331         GPCR = 0x0fffffff;       /* All outputs are set low by default */
 332         GPDR = GPIO_H3600_COM_RTS  | GPIO_H3600_L3_CLOCK |
 333                GPIO_H3600_L3_MODE  | GPIO_H3600_L3_DATA  |
 334                GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0 |
 335                H3100_DIRECT_EGPIO;
 336
 337         /* Older bootldrs put GPIO2-9 in alternate mode on the
 338            assumption that they are used for video */
 339         GAFR &= ~H3100_DIRECT_EGPIO;
 340
 341         H3100_EGPIO = h3100_egpio;
 342         assign_h3600_egpio = h3100_control_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 };
 368
 369 static void h3100_mach_init(void)
 370 {
 371         h3xxx_init_gpio(h3100_default_gpio, ARRAY_SIZE(h3100_default_gpio));
 372         h3xxx_mach_init();
 373         sa11x0_register_irda(&h3100_irda_data);
 374 }
 375
 376 MACHINE_START(H3100, "Compaq iPAQ H3100")
 377         .phys_io        = 0x80000000,
 378         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 379         .boot_params    = 0xc0000100,
 380         .map_io         = h3100_map_io,
 381         .init_irq       = sa1100_init_irq,
 382         .timer          = &sa1100_timer,
 383         .init_machine   = h3100_mach_init,
 384 MACHINE_END
 385
 386 #endif /* CONFIG_SA1100_H3100 */
 387
 388 /************************* H3600 *************************/
 389
 390 #ifdef CONFIG_SA1100_H3600
 391
 392 #define H3600_EGPIO     (*(volatile unsigned int *)H3600_EGPIO_VIRT)
 393 static unsigned int h3600_egpio = EGPIO_H3600_RS232_ON;
 394
 395 static void h3600_control_egpio(enum ipaq_egpio_type x, int setp)
 396 {
 397         unsigned int egpio = 0;
 398         unsigned long flags;
 399
 400         switch (x) {
 401         case IPAQ_EGPIO_LCD_POWER:
 402                 egpio |= EGPIO_H3600_LCD_ON |
 403                          EGPIO_H3600_LCD_PCI |
 404                          EGPIO_H3600_LCD_5V_ON |
 405                          EGPIO_H3600_LVDD_ON;
 406                 break;
 407         case IPAQ_EGPIO_LCD_ENABLE:
 408                 break;
 409         case IPAQ_EGPIO_CODEC_NRESET:
 410                 egpio |= EGPIO_H3600_CODEC_NRESET;
 411                 break;
 412         case IPAQ_EGPIO_AUDIO_ON:
 413                 egpio |= EGPIO_H3600_AUD_AMP_ON |
 414                          EGPIO_H3600_AUD_PWR_ON;
 415                 break;
 416         case IPAQ_EGPIO_QMUTE:
 417                 egpio |= EGPIO_H3600_QMUTE;
 418                 break;
 419         case IPAQ_EGPIO_OPT_NVRAM_ON:
 420                 egpio |= EGPIO_H3600_OPT_NVRAM_ON;
 421                 break;
 422         case IPAQ_EGPIO_OPT_ON:
 423                 egpio |= EGPIO_H3600_OPT_ON;
 424                 break;
 425         case IPAQ_EGPIO_CARD_RESET:
 426                 egpio |= EGPIO_H3600_CARD_RESET;
 427                 break;
 428         case IPAQ_EGPIO_OPT_RESET:
 429                 egpio |= EGPIO_H3600_OPT_RESET;
 430                 break;
 431         case IPAQ_EGPIO_IR_ON:
 432                 egpio |= EGPIO_H3600_IR_ON;
 433                 break;
 434         case IPAQ_EGPIO_IR_FSEL:
 435                 egpio |= EGPIO_H3600_IR_FSEL;
 436                 break;
 437         case IPAQ_EGPIO_RS232_ON:
 438                 egpio |= EGPIO_H3600_RS232_ON;
 439                 break;
 440         case IPAQ_EGPIO_VPP_ON:
 441                 egpio |= EGPIO_H3600_VPP_ON;
 442                 break;
 443         }
 444
 445         if (egpio) {
 446                 local_irq_save(flags);
 447                 if (setp)
 448                         h3600_egpio |= egpio;
 449                 else
 450                         h3600_egpio &= ~egpio;
 451                 H3600_EGPIO = h3600_egpio;
 452                 local_irq_restore(flags);
 453         }
 454 }
 455
 456 static void __init h3600_map_io(void)
 457 {
 458         h3xxx_map_io();
 459
 460         /* Initialize h3600-specific values here */
 461
 462         GPCR = 0x0fffffff;       /* All outputs are set low by default */
 463         GPDR = GPIO_H3600_COM_RTS  | GPIO_H3600_L3_CLOCK |
 464                GPIO_H3600_L3_MODE  | GPIO_H3600_L3_DATA  |
 465                GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0 |
 466                GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12 |
 467                GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9  | GPIO_LDD8;
 468
 469         H3600_EGPIO = h3600_egpio;         /* Maintains across sleep? */
 470         assign_h3600_egpio = h3600_control_egpio;
 471 }
 472
 473 /*
 474  * This turns the IRDA power on or off on the Compaq H3600
 475  */
 476 static int h3600_irda_set_power(struct device *dev, unsigned int state)
 477 {
 478         assign_h3600_egpio(IPAQ_EGPIO_IR_ON, state);
 479         return 0;
 480 }
 481
 482 static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
 483 {
 484         assign_h3600_egpio(IPAQ_EGPIO_IR_FSEL, !(speed < 4000000));
 485 }
 486
 487 static struct irda_platform_data h3600_irda_data = {
 488         .set_power      = h3600_irda_set_power,
 489         .set_speed      = h3600_irda_set_speed,
 490 };
 491
 492 static void h3600_mach_init(void)
 493 {
 494         h3xxx_mach_init();
 495         sa11x0_register_irda(&h3600_irda_data);
 496 }
 497
 498 MACHINE_START(H3600, "Compaq iPAQ H3600")
 499         .phys_io        = 0x80000000,
 500         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 501         .boot_params    = 0xc0000100,
 502         .map_io         = h3600_map_io,
 503         .init_irq       = sa1100_init_irq,
 504         .timer          = &sa1100_timer,
 505         .init_machine   = h3600_mach_init,
 506 MACHINE_END
 507
 508 #endif /* CONFIG_SA1100_H3600 */
 509