arch/blackfin/kernel/bfin_gpio.c

   1 /*
   2  * File:         arch/blackfin/kernel/bfin_gpio.c
   3  * Based on:
   4  * Author:       Michael Hennerich (hennerich@blackfin.uclinux.org)
   5  *
   6  * Created:
   7  * Description:  GPIO Abstraction Layer
   8  *
   9  * Modified:
  10  *               Copyright 2008 Analog Devices Inc.
  11  *
  12  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, see the file COPYING, or write
  26  * to the Free Software Foundation, Inc.,
  27  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  28  */
  29
  30 /*
  31 *  Number     BF537/6/4    BF561    BF533/2/1      BF549/8/4/2
  32 *
  33 *  GPIO_0       PF0         PF0        PF0         PA0...PJ13
  34 *  GPIO_1       PF1         PF1        PF1
  35 *  GPIO_2       PF2         PF2        PF2
  36 *  GPIO_3       PF3         PF3        PF3
  37 *  GPIO_4       PF4         PF4        PF4
  38 *  GPIO_5       PF5         PF5        PF5
  39 *  GPIO_6       PF6         PF6        PF6
  40 *  GPIO_7       PF7         PF7        PF7
  41 *  GPIO_8       PF8         PF8        PF8
  42 *  GPIO_9       PF9         PF9        PF9
  43 *  GPIO_10      PF10        PF10       PF10
  44 *  GPIO_11      PF11        PF11       PF11
  45 *  GPIO_12      PF12        PF12       PF12
  46 *  GPIO_13      PF13        PF13       PF13
  47 *  GPIO_14      PF14        PF14       PF14
  48 *  GPIO_15      PF15        PF15       PF15
  49 *  GPIO_16      PG0         PF16
  50 *  GPIO_17      PG1         PF17
  51 *  GPIO_18      PG2         PF18
  52 *  GPIO_19      PG3         PF19
  53 *  GPIO_20      PG4         PF20
  54 *  GPIO_21      PG5         PF21
  55 *  GPIO_22      PG6         PF22
  56 *  GPIO_23      PG7         PF23
  57 *  GPIO_24      PG8         PF24
  58 *  GPIO_25      PG9         PF25
  59 *  GPIO_26      PG10        PF26
  60 *  GPIO_27      PG11        PF27
  61 *  GPIO_28      PG12        PF28
  62 *  GPIO_29      PG13        PF29
  63 *  GPIO_30      PG14        PF30
  64 *  GPIO_31      PG15        PF31
  65 *  GPIO_32      PH0         PF32
  66 *  GPIO_33      PH1         PF33
  67 *  GPIO_34      PH2         PF34
  68 *  GPIO_35      PH3         PF35
  69 *  GPIO_36      PH4         PF36
  70 *  GPIO_37      PH5         PF37
  71 *  GPIO_38      PH6         PF38
  72 *  GPIO_39      PH7         PF39
  73 *  GPIO_40      PH8         PF40
  74 *  GPIO_41      PH9         PF41
  75 *  GPIO_42      PH10        PF42
  76 *  GPIO_43      PH11        PF43
  77 *  GPIO_44      PH12        PF44
  78 *  GPIO_45      PH13        PF45
  79 *  GPIO_46      PH14        PF46
  80 *  GPIO_47      PH15        PF47
  81 */
  82
  83 #include <linux/delay.h>
  84 #include <linux/module.h>
  85 #include <linux/err.h>
  86 #include <linux/proc_fs.h>
  87 #include <asm/blackfin.h>
  88 #include <asm/gpio.h>
  89 #include <asm/portmux.h>
  90 #include <linux/irq.h>
  91
  92 #if ANOMALY_05000311 || ANOMALY_05000323
  93 enum {
  94         AWA_data = SYSCR,
  95         AWA_data_clear = SYSCR,
  96         AWA_data_set = SYSCR,
  97         AWA_toggle = SYSCR,
  98         AWA_maska = BFIN_UART_SCR,
  99         AWA_maska_clear = BFIN_UART_SCR,
 100         AWA_maska_set = BFIN_UART_SCR,
 101         AWA_maska_toggle = BFIN_UART_SCR,
 102         AWA_maskb = BFIN_UART_GCTL,
 103         AWA_maskb_clear = BFIN_UART_GCTL,
 104         AWA_maskb_set = BFIN_UART_GCTL,
 105         AWA_maskb_toggle = BFIN_UART_GCTL,
 106         AWA_dir = SPORT1_STAT,
 107         AWA_polar = SPORT1_STAT,
 108         AWA_edge = SPORT1_STAT,
 109         AWA_both = SPORT1_STAT,
 110 #if ANOMALY_05000311
 111         AWA_inen = TIMER_ENABLE,
 112 #elif ANOMALY_05000323
 113         AWA_inen = DMA1_1_CONFIG,
 114 #endif
 115 };
 116         /* Anomaly Workaround */
 117 #define AWA_DUMMY_READ(name) bfin_read16(AWA_ ## name)
 118 #else
 119 #define AWA_DUMMY_READ(...)  do { } while (0)
 120 #endif
 121
 122 #ifdef BF533_FAMILY
 123 static struct gpio_port_t *gpio_bankb[gpio_bank(MAX_BLACKFIN_GPIOS)] = {
 124         (struct gpio_port_t *) FIO_FLAG_D,
 125 };
 126 #endif
 127
 128 #if defined(BF527_FAMILY) || defined(BF537_FAMILY)
 129 static struct gpio_port_t *gpio_bankb[gpio_bank(MAX_BLACKFIN_GPIOS)] = {
 130         (struct gpio_port_t *) PORTFIO,
 131         (struct gpio_port_t *) PORTGIO,
 132         (struct gpio_port_t *) PORTHIO,
 133 };
 134
 135 static unsigned short *port_fer[gpio_bank(MAX_BLACKFIN_GPIOS)] = {
 136         (unsigned short *) PORTF_FER,
 137         (unsigned short *) PORTG_FER,
 138         (unsigned short *) PORTH_FER,
 139 };
 140 #endif
 141
 142 #ifdef BF527_FAMILY
 143 static unsigned short *port_mux[gpio_bank(MAX_BLACKFIN_GPIOS)] = {
 144         (unsigned short *) PORTF_MUX,
 145         (unsigned short *) PORTG_MUX,
 146         (unsigned short *) PORTH_MUX,
 147 };
 148
 149 static const
 150 u8 pmux_offset[][16] =
 151         {{ 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 4, 6, 8, 8, 10, 10 }, /* PORTF */
 152          { 0, 0, 0, 0, 0, 2, 2, 4, 4, 6, 8, 10, 10, 10, 12, 12 }, /* PORTG */
 153          { 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 4, 4, 4, 4, 4, 4 }, /* PORTH */
 154         };
 155 #endif
 156
 157 #ifdef BF561_FAMILY
 158 static struct gpio_port_t *gpio_bankb[gpio_bank(MAX_BLACKFIN_GPIOS)] = {
 159         (struct gpio_port_t *) FIO0_FLAG_D,
 160         (struct gpio_port_t *) FIO1_FLAG_D,
 161         (struct gpio_port_t *) FIO2_FLAG_D,
 162 };
 163 #endif
 164
 165 #ifdef BF548_FAMILY
 166 static struct gpio_port_t *gpio_array[gpio_bank(MAX_BLACKFIN_GPIOS)] = {
 167         (struct gpio_port_t *)PORTA_FER,
 168         (struct gpio_port_t *)PORTB_FER,
 169         (struct gpio_port_t *)PORTC_FER,
 170         (struct gpio_port_t *)PORTD_FER,
 171         (struct gpio_port_t *)PORTE_FER,
 172         (struct gpio_port_t *)PORTF_FER,
 173         (struct gpio_port_t *)PORTG_FER,
 174         (struct gpio_port_t *)PORTH_FER,
 175         (struct gpio_port_t *)PORTI_FER,
 176         (struct gpio_port_t *)PORTJ_FER,
 177 };
 178 #endif
 179
 180 static unsigned short reserved_gpio_map[gpio_bank(MAX_BLACKFIN_GPIOS)];
 181 static unsigned short reserved_peri_map[gpio_bank(MAX_RESOURCES)];
 182
 183 #define RESOURCE_LABEL_SIZE     16
 184
 185 static struct str_ident {
 186         char name[RESOURCE_LABEL_SIZE];
 187 } str_ident[MAX_RESOURCES];
 188
 189 #if defined(CONFIG_PM)
 190 #if defined(CONFIG_BF54x)
 191 static struct gpio_port_s gpio_bank_saved[gpio_bank(MAX_BLACKFIN_GPIOS)];
 192 #else
 193 static unsigned short wakeup_map[gpio_bank(MAX_BLACKFIN_GPIOS)];
 194 static unsigned char wakeup_flags_map[MAX_BLACKFIN_GPIOS];
 195 static struct gpio_port_s gpio_bank_saved[gpio_bank(MAX_BLACKFIN_GPIOS)];
 196
 197 #ifdef BF533_FAMILY
 198 static unsigned int sic_iwr_irqs[gpio_bank(MAX_BLACKFIN_GPIOS)] = {IRQ_PROG_INTB};
 199 #endif
 200
 201 #ifdef BF537_FAMILY
 202 static unsigned int sic_iwr_irqs[gpio_bank(MAX_BLACKFIN_GPIOS)] = {IRQ_PROG_INTB, IRQ_PORTG_INTB, IRQ_MAC_TX};
 203 #endif
 204
 205 #ifdef BF527_FAMILY
 206 static unsigned int sic_iwr_irqs[gpio_bank(MAX_BLACKFIN_GPIOS)] = {IRQ_PORTF_INTB, IRQ_PORTG_INTB, IRQ_PORTH_INTB};
 207 #endif
 208
 209 #ifdef BF561_FAMILY
 210 static unsigned int sic_iwr_irqs[gpio_bank(MAX_BLACKFIN_GPIOS)] = {IRQ_PROG0_INTB, IRQ_PROG1_INTB, IRQ_PROG2_INTB};
 211 #endif
 212 #endif
 213 #endif /* CONFIG_PM */
 214
 215 #if defined(BF548_FAMILY)
 216 inline int check_gpio(unsigned gpio)
 217 {
 218         if (gpio == GPIO_PB15 || gpio == GPIO_PC14 || gpio == GPIO_PC15
 219             || gpio == GPIO_PH14 || gpio == GPIO_PH15
 220             || gpio == GPIO_PJ14 || gpio == GPIO_PJ15
 221             || gpio > MAX_BLACKFIN_GPIOS)
 222                 return -EINVAL;
 223         return 0;
 224 }
 225 #else
 226 inline int check_gpio(unsigned gpio)
 227 {
 228         if (gpio >= MAX_BLACKFIN_GPIOS)
 229                 return -EINVAL;
 230         return 0;
 231 }
 232 #endif
 233
 234 static void gpio_error(unsigned gpio)
 235 {
 236         printk(KERN_ERR "bfin-gpio: GPIO %d wasn't requested!\n", gpio);
 237 }
 238
 239 static void set_label(unsigned short ident, const char *label)
 240 {
 241         if (label && str_ident) {
 242                 strncpy(str_ident[ident].name, label,
 243                          RESOURCE_LABEL_SIZE);
 244                 str_ident[ident].name[RESOURCE_LABEL_SIZE - 1] = 0;
 245         }
 246 }
 247
 248 static char *get_label(unsigned short ident)
 249 {
 250         if (!str_ident)
 251                 return "UNKNOWN";
 252
 253         return (*str_ident[ident].name ? str_ident[ident].name : "UNKNOWN");
 254 }
 255
 256 static int cmp_label(unsigned short ident, const char *label)
 257 {
 258         if (label == NULL) {
 259                 dump_stack();
 260                 printk(KERN_ERR "Please provide none-null label\n");
 261         }
 262
 263         if (label && str_ident)
 264                 return strncmp(str_ident[ident].name,
 265                                  label, strlen(label));
 266         else
 267                 return -EINVAL;
 268 }
 269
 270 #if defined(BF527_FAMILY) || defined(BF537_FAMILY)
 271 static void port_setup(unsigned gpio, unsigned short usage)
 272 {
 273         if (!check_gpio(gpio)) {
 274                 if (usage == GPIO_USAGE)
 275                         *port_fer[gpio_bank(gpio)] &= ~gpio_bit(gpio);
 276                 else
 277                         *port_fer[gpio_bank(gpio)] |= gpio_bit(gpio);
 278                 SSYNC();
 279         }
 280 }
 281 #elif defined(BF548_FAMILY)
 282 static void port_setup(unsigned gpio, unsigned short usage)
 283 {
 284         if (usage == GPIO_USAGE)
 285                 gpio_array[gpio_bank(gpio)]->port_fer &= ~gpio_bit(gpio);
 286         else
 287                 gpio_array[gpio_bank(gpio)]->port_fer |= gpio_bit(gpio);
 288         SSYNC();
 289 }
 290 #else
 291 # define port_setup(...)  do { } while (0)
 292 #endif
 293
 294 #ifdef BF537_FAMILY
 295 static struct {
 296         unsigned short res;
 297         unsigned short offset;
 298 } port_mux_lut[] = {
 299         {.res = P_PPI0_D13, .offset = 11},
 300         {.res = P_PPI0_D14, .offset = 11},
 301         {.res = P_PPI0_D15, .offset = 11},
 302         {.res = P_SPORT1_TFS, .offset = 11},
 303         {.res = P_SPORT1_TSCLK, .offset = 11},
 304         {.res = P_SPORT1_DTPRI, .offset = 11},
 305         {.res = P_PPI0_D10, .offset = 10},
 306         {.res = P_PPI0_D11, .offset = 10},
 307         {.res = P_PPI0_D12, .offset = 10},
 308         {.res = P_SPORT1_RSCLK, .offset = 10},
 309         {.res = P_SPORT1_RFS, .offset = 10},
 310         {.res = P_SPORT1_DRPRI, .offset = 10},
 311         {.res = P_PPI0_D8, .offset = 9},
 312         {.res = P_PPI0_D9, .offset = 9},
 313         {.res = P_SPORT1_DRSEC, .offset = 9},
 314         {.res = P_SPORT1_DTSEC, .offset = 9},
 315         {.res = P_TMR2, .offset = 8},
 316         {.res = P_PPI0_FS3, .offset = 8},
 317         {.res = P_TMR3, .offset = 7},
 318         {.res = P_SPI0_SSEL4, .offset = 7},
 319         {.res = P_TMR4, .offset = 6},
 320         {.res = P_SPI0_SSEL5, .offset = 6},
 321         {.res = P_TMR5, .offset = 5},
 322         {.res = P_SPI0_SSEL6, .offset = 5},
 323         {.res = P_UART1_RX, .offset = 4},
 324         {.res = P_UART1_TX, .offset = 4},
 325         {.res = P_TMR6, .offset = 4},
 326         {.res = P_TMR7, .offset = 4},
 327         {.res = P_UART0_RX, .offset = 3},
 328         {.res = P_UART0_TX, .offset = 3},
 329         {.res = P_DMAR0, .offset = 3},
 330         {.res = P_DMAR1, .offset = 3},
 331         {.res = P_SPORT0_DTSEC, .offset = 1},
 332         {.res = P_SPORT0_DRSEC, .offset = 1},
 333         {.res = P_CAN0_RX, .offset = 1},
 334         {.res = P_CAN0_TX, .offset = 1},
 335         {.res = P_SPI0_SSEL7, .offset = 1},
 336         {.res = P_SPORT0_TFS, .offset = 0},
 337         {.res = P_SPORT0_DTPRI, .offset = 0},
 338         {.res = P_SPI0_SSEL2, .offset = 0},
 339         {.res = P_SPI0_SSEL3, .offset = 0},
 340 };
 341
 342 static void portmux_setup(unsigned short per, unsigned short function)
 343 {
 344         u16 y, offset, muxreg;
 345
 346         for (y = 0; y < ARRAY_SIZE(port_mux_lut); y++) {
 347                 if (port_mux_lut[y].res == per) {
 348
 349                         /* SET PORTMUX REG */
 350
 351                         offset = port_mux_lut[y].offset;
 352                         muxreg = bfin_read_PORT_MUX();
 353
 354                         if (offset != 1)
 355                                 muxreg &= ~(1 << offset);
 356                         else
 357                                 muxreg &= ~(3 << 1);
 358
 359                         muxreg |= (function << offset);
 360                         bfin_write_PORT_MUX(muxreg);
 361                 }
 362         }
 363 }
 364 #elif defined(BF548_FAMILY)
 365 inline void portmux_setup(unsigned short portno, unsigned short function)
 366 {
 367         u32 pmux;
 368
 369         pmux = gpio_array[gpio_bank(portno)]->port_mux;
 370
 371         pmux &= ~(0x3 << (2 * gpio_sub_n(portno)));
 372         pmux |= (function & 0x3) << (2 * gpio_sub_n(portno));
 373
 374         gpio_array[gpio_bank(portno)]->port_mux = pmux;
 375 }
 376
 377 inline u16 get_portmux(unsigned short portno)
 378 {
 379         u32 pmux;
 380
 381         pmux = gpio_array[gpio_bank(portno)]->port_mux;
 382
 383         return (pmux >> (2 * gpio_sub_n(portno)) & 0x3);
 384 }
 385 #elif defined(BF527_FAMILY)
 386 inline void portmux_setup(unsigned short portno, unsigned short function)
 387 {
 388         u16 pmux, ident = P_IDENT(portno);
 389         u8 offset = pmux_offset[gpio_bank(ident)][gpio_sub_n(ident)];
 390
 391         pmux = *port_mux[gpio_bank(ident)];
 392         pmux &= ~(3 << offset);
 393         pmux |= (function & 3) << offset;
 394         *port_mux[gpio_bank(ident)] = pmux;
 395         SSYNC();
 396 }
 397 #else
 398 # define portmux_setup(...)  do { } while (0)
 399 #endif
 400
 401 static int __init bfin_gpio_init(void)
 402 {
 403         printk(KERN_INFO "Blackfin GPIO Controller\n");
 404
 405         return 0;
 406 }
 407 arch_initcall(bfin_gpio_init);
 408
 409
 410 #ifndef BF548_FAMILY
 411 /***********************************************************
 412 *
 413 * FUNCTIONS: Blackfin General Purpose Ports Access Functions
 414 *
 415 * INPUTS/OUTPUTS:
 416 * gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
 417 *
 418 *
 419 * DESCRIPTION: These functions abstract direct register access
 420 *              to Blackfin processor General Purpose
 421 *              Ports Regsiters
 422 *
 423 * CAUTION: These functions do not belong to the GPIO Driver API
 424 *************************************************************
 425 * MODIFICATION HISTORY :
 426 **************************************************************/
 427
 428 /* Set a specific bit */
 429
 430 #define SET_GPIO(name) \
 431 void set_gpio_ ## name(unsigned gpio, unsigned short arg) \
 432 { \
 433         unsigned long flags; \
 434         local_irq_save(flags); \
 435         if (arg) \
 436                 gpio_bankb[gpio_bank(gpio)]->name |= gpio_bit(gpio); \
 437         else \
 438                 gpio_bankb[gpio_bank(gpio)]->name &= ~gpio_bit(gpio); \
 439         AWA_DUMMY_READ(name); \
 440         local_irq_restore(flags); \
 441 } \
 442 EXPORT_SYMBOL(set_gpio_ ## name);
 443
 444 SET_GPIO(dir)
 445 SET_GPIO(inen)
 446 SET_GPIO(polar)
 447 SET_GPIO(edge)
 448 SET_GPIO(both)
 449
 450
 451 #if ANOMALY_05000311 || ANOMALY_05000323
 452 #define SET_GPIO_SC(name) \
 453 void set_gpio_ ## name(unsigned gpio, unsigned short arg) \
 454 { \
 455         unsigned long flags; \
 456         local_irq_save(flags); \
 457         if (arg) \
 458                 gpio_bankb[gpio_bank(gpio)]->name ## _set = gpio_bit(gpio); \
 459         else \
 460                 gpio_bankb[gpio_bank(gpio)]->name ## _clear = gpio_bit(gpio); \
 461         AWA_DUMMY_READ(name); \
 462         local_irq_restore(flags); \
 463 } \
 464 EXPORT_SYMBOL(set_gpio_ ## name);
 465 #else
 466 #define SET_GPIO_SC(name) \
 467 void set_gpio_ ## name(unsigned gpio, unsigned short arg) \
 468 { \
 469         if (arg) \
 470                 gpio_bankb[gpio_bank(gpio)]->name ## _set = gpio_bit(gpio); \
 471         else \
 472                 gpio_bankb[gpio_bank(gpio)]->name ## _clear = gpio_bit(gpio); \
 473 } \
 474 EXPORT_SYMBOL(set_gpio_ ## name);
 475 #endif
 476
 477 SET_GPIO_SC(maska)
 478 SET_GPIO_SC(maskb)
 479 SET_GPIO_SC(data)
 480
 481 #if ANOMALY_05000311 || ANOMALY_05000323
 482 void set_gpio_toggle(unsigned gpio)
 483 {
 484         unsigned long flags;
 485         local_irq_save(flags);
 486         gpio_bankb[gpio_bank(gpio)]->toggle = gpio_bit(gpio);
 487         AWA_DUMMY_READ(toggle);
 488         local_irq_restore(flags);
 489 }
 490 #else
 491 void set_gpio_toggle(unsigned gpio)
 492 {
 493         gpio_bankb[gpio_bank(gpio)]->toggle = gpio_bit(gpio);
 494 }
 495 #endif
 496 EXPORT_SYMBOL(set_gpio_toggle);
 497
 498
 499 /*Set current PORT date (16-bit word)*/
 500
 501 #if ANOMALY_05000311 || ANOMALY_05000323
 502 #define SET_GPIO_P(name) \
 503 void set_gpiop_ ## name(unsigned gpio, unsigned short arg) \
 504 { \
 505         unsigned long flags; \
 506         local_irq_save(flags); \
 507         gpio_bankb[gpio_bank(gpio)]->name = arg; \
 508         AWA_DUMMY_READ(name); \
 509         local_irq_restore(flags); \
 510 } \
 511 EXPORT_SYMBOL(set_gpiop_ ## name);
 512 #else
 513 #define SET_GPIO_P(name) \
 514 void set_gpiop_ ## name(unsigned gpio, unsigned short arg) \
 515 { \
 516         gpio_bankb[gpio_bank(gpio)]->name = arg; \
 517 } \
 518 EXPORT_SYMBOL(set_gpiop_ ## name);
 519 #endif
 520
 521 SET_GPIO_P(data)
 522 SET_GPIO_P(dir)
 523 SET_GPIO_P(inen)
 524 SET_GPIO_P(polar)
 525 SET_GPIO_P(edge)
 526 SET_GPIO_P(both)
 527 SET_GPIO_P(maska)
 528 SET_GPIO_P(maskb)
 529
 530 /* Get a specific bit */
 531 #if ANOMALY_05000311 || ANOMALY_05000323
 532 #define GET_GPIO(name) \
 533 unsigned short get_gpio_ ## name(unsigned gpio) \
 534 { \
 535         unsigned long flags; \
 536         unsigned short ret; \
 537         local_irq_save(flags); \
 538         ret = 0x01 & (gpio_bankb[gpio_bank(gpio)]->name >> gpio_sub_n(gpio)); \
 539         AWA_DUMMY_READ(name); \
 540         local_irq_restore(flags); \
 541         return ret; \
 542 } \
 543 EXPORT_SYMBOL(get_gpio_ ## name);
 544 #else
 545 #define GET_GPIO(name) \
 546 unsigned short get_gpio_ ## name(unsigned gpio) \
 547 { \
 548         return (0x01 & (gpio_bankb[gpio_bank(gpio)]->name >> gpio_sub_n(gpio))); \
 549 } \
 550 EXPORT_SYMBOL(get_gpio_ ## name);
 551 #endif
 552
 553 GET_GPIO(data)
 554 GET_GPIO(dir)
 555 GET_GPIO(inen)
 556 GET_GPIO(polar)
 557 GET_GPIO(edge)
 558 GET_GPIO(both)
 559 GET_GPIO(maska)
 560 GET_GPIO(maskb)
 561
 562 /*Get current PORT date (16-bit word)*/
 563
 564 #if ANOMALY_05000311 || ANOMALY_05000323
 565 #define GET_GPIO_P(name) \
 566 unsigned short get_gpiop_ ## name(unsigned gpio) \
 567 { \
 568         unsigned long flags; \
 569         unsigned short ret; \
 570         local_irq_save(flags); \
 571         ret = (gpio_bankb[gpio_bank(gpio)]->name); \
 572         AWA_DUMMY_READ(name); \
 573         local_irq_restore(flags); \
 574         return ret; \
 575 } \
 576 EXPORT_SYMBOL(get_gpiop_ ## name);
 577 #else
 578 #define GET_GPIO_P(name) \
 579 unsigned short get_gpiop_ ## name(unsigned gpio) \
 580 { \
 581         return (gpio_bankb[gpio_bank(gpio)]->name);\
 582 } \
 583 EXPORT_SYMBOL(get_gpiop_ ## name);
 584 #endif
 585
 586 GET_GPIO_P(data)
 587 GET_GPIO_P(dir)
 588 GET_GPIO_P(inen)
 589 GET_GPIO_P(polar)
 590 GET_GPIO_P(edge)
 591 GET_GPIO_P(both)
 592 GET_GPIO_P(maska)
 593 GET_GPIO_P(maskb)
 594
 595
 596 #ifdef CONFIG_PM
 597 /***********************************************************
 598 *
 599 * FUNCTIONS: Blackfin PM Setup API
 600 *
 601 * INPUTS/OUTPUTS:
 602 * gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
 603 * type -
 604 *       PM_WAKE_RISING
 605 *       PM_WAKE_FALLING
 606 *       PM_WAKE_HIGH
 607 *       PM_WAKE_LOW
 608 *       PM_WAKE_BOTH_EDGES
 609 *
 610 * DESCRIPTION: Blackfin PM Driver API
 611 *
 612 * CAUTION:
 613 *************************************************************
 614 * MODIFICATION HISTORY :
 615 **************************************************************/
 616 int gpio_pm_wakeup_request(unsigned gpio, unsigned char type)
 617 {
 618         unsigned long flags;
 619
 620         if ((check_gpio(gpio) < 0) || !type)
 621                 return -EINVAL;
 622
 623         local_irq_save(flags);
 624         wakeup_map[gpio_bank(gpio)] |= gpio_bit(gpio);
 625         wakeup_flags_map[gpio] = type;
 626         local_irq_restore(flags);
 627
 628         return 0;
 629 }
 630 EXPORT_SYMBOL(gpio_pm_wakeup_request);
 631
 632 void gpio_pm_wakeup_free(unsigned gpio)
 633 {
 634         unsigned long flags;
 635
 636         if (check_gpio(gpio) < 0)
 637                 return;
 638
 639         local_irq_save(flags);
 640
 641         wakeup_map[gpio_bank(gpio)] &= ~gpio_bit(gpio);
 642
 643         local_irq_restore(flags);
 644 }
 645 EXPORT_SYMBOL(gpio_pm_wakeup_free);
 646
 647 static int bfin_gpio_wakeup_type(unsigned gpio, unsigned char type)
 648 {
 649         port_setup(gpio, GPIO_USAGE);
 650         set_gpio_dir(gpio, 0);
 651         set_gpio_inen(gpio, 1);
 652
 653         if (type & (PM_WAKE_RISING | PM_WAKE_FALLING))
 654                 set_gpio_edge(gpio, 1);
 655          else
 656                 set_gpio_edge(gpio, 0);
 657
 658         if ((type & (PM_WAKE_BOTH_EDGES)) == (PM_WAKE_BOTH_EDGES))
 659                 set_gpio_both(gpio, 1);
 660         else
 661                 set_gpio_both(gpio, 0);
 662
 663         if ((type & (PM_WAKE_FALLING | PM_WAKE_LOW)))
 664                 set_gpio_polar(gpio, 1);
 665         else
 666                 set_gpio_polar(gpio, 0);
 667
 668         SSYNC();
 669
 670         return 0;
 671 }
 672
 673 u32 bfin_pm_standby_setup(void)
 674 {
 675         u16 bank, mask, i, gpio;
 676
 677         for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
 678                 mask = wakeup_map[gpio_bank(i)];
 679                 bank = gpio_bank(i);
 680
 681                 gpio_bank_saved[bank].maskb = gpio_bankb[bank]->maskb;
 682                 gpio_bankb[bank]->maskb = 0;
 683
 684                 if (mask) {
 685 #if defined(BF527_FAMILY) || defined(BF537_FAMILY)
 686                         gpio_bank_saved[bank].fer   = *port_fer[bank];
 687 #endif
 688                         gpio_bank_saved[bank].inen  = gpio_bankb[bank]->inen;
 689                         gpio_bank_saved[bank].polar = gpio_bankb[bank]->polar;
 690                         gpio_bank_saved[bank].dir   = gpio_bankb[bank]->dir;
 691                         gpio_bank_saved[bank].edge  = gpio_bankb[bank]->edge;
 692                         gpio_bank_saved[bank].both  = gpio_bankb[bank]->both;
 693                         gpio_bank_saved[bank].reserved =
 694                                                 reserved_gpio_map[bank];
 695
 696                         gpio = i;
 697
 698                         while (mask) {
 699                                 if ((mask & 1) && (wakeup_flags_map[gpio] !=
 700                                         PM_WAKE_IGNORE)) {
 701                                         reserved_gpio_map[gpio_bank(gpio)] |=
 702                                                         gpio_bit(gpio);
 703                                         bfin_gpio_wakeup_type(gpio,
 704                                                 wakeup_flags_map[gpio]);
 705                                         set_gpio_data(gpio, 0); /*Clear*/
 706                                 }
 707                                 gpio++;
 708                                 mask >>= 1;
 709                         }
 710
 711                         bfin_internal_set_wake(sic_iwr_irqs[bank], 1);
 712                         gpio_bankb[bank]->maskb_set = wakeup_map[gpio_bank(i)];
 713                 }
 714         }
 715
 716         AWA_DUMMY_READ(maskb_set);
 717
 718         return 0;
 719 }
 720
 721 void bfin_pm_standby_restore(void)
 722 {
 723         u16 bank, mask, i;
 724
 725         for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
 726                 mask = wakeup_map[gpio_bank(i)];
 727                 bank = gpio_bank(i);
 728
 729                 if (mask) {
 730 #if defined(BF527_FAMILY) || defined(BF537_FAMILY)
 731                         *port_fer[bank]         = gpio_bank_saved[bank].fer;
 732 #endif
 733                         gpio_bankb[bank]->inen  = gpio_bank_saved[bank].inen;
 734                         gpio_bankb[bank]->dir   = gpio_bank_saved[bank].dir;
 735                         gpio_bankb[bank]->polar = gpio_bank_saved[bank].polar;
 736                         gpio_bankb[bank]->edge  = gpio_bank_saved[bank].edge;
 737                         gpio_bankb[bank]->both  = gpio_bank_saved[bank].both;
 738
 739                         reserved_gpio_map[bank] =
 740                                         gpio_bank_saved[bank].reserved;
 741                         bfin_internal_set_wake(sic_iwr_irqs[bank], 0);
 742                 }
 743
 744                 gpio_bankb[bank]->maskb = gpio_bank_saved[bank].maskb;
 745         }
 746         AWA_DUMMY_READ(maskb);
 747 }
 748
 749 void bfin_gpio_pm_hibernate_suspend(void)
 750 {
 751         int i, bank;
 752
 753         for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
 754                 bank = gpio_bank(i);
 755
 756 #if defined(BF527_FAMILY) || defined(BF537_FAMILY)
 757                         gpio_bank_saved[bank].fer   = *port_fer[bank];
 758 #ifdef BF527_FAMILY
 759                         gpio_bank_saved[bank].mux   = *port_mux[bank];
 760 #else
 761                         if (bank == 0)
 762                                 gpio_bank_saved[bank].mux   = bfin_read_PORT_MUX();
 763 #endif
 764 #endif
 765                         gpio_bank_saved[bank].data  = gpio_bankb[bank]->data;
 766                         gpio_bank_saved[bank].inen  = gpio_bankb[bank]->inen;
 767                         gpio_bank_saved[bank].polar = gpio_bankb[bank]->polar;
 768                         gpio_bank_saved[bank].dir   = gpio_bankb[bank]->dir;
 769                         gpio_bank_saved[bank].edge  = gpio_bankb[bank]->edge;
 770                         gpio_bank_saved[bank].both  = gpio_bankb[bank]->both;
 771                         gpio_bank_saved[bank].maska  = gpio_bankb[bank]->maska;
 772         }
 773
 774         AWA_DUMMY_READ(maska);
 775 }
 776
 777 void bfin_gpio_pm_hibernate_restore(void)
 778 {
 779         int i, bank;
 780
 781         for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
 782                         bank = gpio_bank(i);
 783
 784 #if defined(BF527_FAMILY) || defined(BF537_FAMILY)
 785 #ifdef BF527_FAMILY
 786                         *port_mux[bank] = gpio_bank_saved[bank].mux;
 787 #else
 788                         if (bank == 0)
 789                                 bfin_write_PORT_MUX(gpio_bank_saved[bank].mux);
 790 #endif
 791                         *port_fer[bank]         = gpio_bank_saved[bank].fer;
 792 #endif
 793                         gpio_bankb[bank]->inen  = gpio_bank_saved[bank].inen;
 794                         gpio_bankb[bank]->dir   = gpio_bank_saved[bank].dir;
 795                         gpio_bankb[bank]->polar = gpio_bank_saved[bank].polar;
 796                         gpio_bankb[bank]->edge  = gpio_bank_saved[bank].edge;
 797                         gpio_bankb[bank]->both  = gpio_bank_saved[bank].both;
 798
 799                         gpio_bankb[bank]->data_set = gpio_bank_saved[bank].data
 800                                                         | gpio_bank_saved[bank].dir;
 801
 802                         gpio_bankb[bank]->maska = gpio_bank_saved[bank].maska;
 803         }
 804         AWA_DUMMY_READ(maska);
 805 }
 806
 807
 808 #endif
 809 #else /* BF548_FAMILY */
 810 #ifdef CONFIG_PM
 811
 812 u32 bfin_pm_standby_setup(void)
 813 {
 814         return 0;
 815 }
 816
 817 void bfin_pm_standby_restore(void)
 818 {
 819
 820 }
 821
 822 void bfin_gpio_pm_hibernate_suspend(void)
 823 {
 824         int i, bank;
 825
 826         for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
 827                 bank = gpio_bank(i);
 828
 829                         gpio_bank_saved[bank].fer  = gpio_array[bank]->port_fer;
 830                         gpio_bank_saved[bank].mux  = gpio_array[bank]->port_mux;
 831                         gpio_bank_saved[bank].data  = gpio_array[bank]->port_data;
 832                         gpio_bank_saved[bank].data  = gpio_array[bank]->port_data;
 833                         gpio_bank_saved[bank].inen  = gpio_array[bank]->port_inen;
 834                         gpio_bank_saved[bank].dir   = gpio_array[bank]->port_dir_set;
 835         }
 836 }
 837
 838 void bfin_gpio_pm_hibernate_restore(void)
 839 {
 840         int i, bank;
 841
 842         for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
 843                         bank = gpio_bank(i);
 844
 845                         gpio_array[bank]->port_mux  = gpio_bank_saved[bank].mux;
 846                         gpio_array[bank]->port_fer  = gpio_bank_saved[bank].fer;
 847                         gpio_array[bank]->port_inen  = gpio_bank_saved[bank].inen;
 848                         gpio_array[bank]->port_dir_set   = gpio_bank_saved[bank].dir;
 849                         gpio_array[bank]->port_set = gpio_bank_saved[bank].data
 850                                                         | gpio_bank_saved[bank].dir;
 851         }
 852 }
 853 #endif
 854
 855 unsigned short get_gpio_dir(unsigned gpio)
 856 {
 857         return (0x01 & (gpio_array[gpio_bank(gpio)]->port_dir_clear >> gpio_sub_n(gpio)));
 858 }
 859 EXPORT_SYMBOL(get_gpio_dir);
 860
 861 #endif /* BF548_FAMILY */
 862
 863 /***********************************************************
 864 *
 865 * FUNCTIONS:    Blackfin Peripheral Resource Allocation
 866 *               and PortMux Setup
 867 *
 868 * INPUTS/OUTPUTS:
 869 * per   Peripheral Identifier
 870 * label String
 871 *
 872 * DESCRIPTION: Blackfin Peripheral Resource Allocation and Setup API
 873 *
 874 * CAUTION:
 875 *************************************************************
 876 * MODIFICATION HISTORY :
 877 **************************************************************/
 878
 879 #ifdef BF548_FAMILY
 880 int peripheral_request(unsigned short per, const char *label)
 881 {
 882         unsigned long flags;
 883         unsigned short ident = P_IDENT(per);
 884
 885         /*
 886          * Don't cares are pins with only one dedicated function
 887          */
 888
 889         if (per & P_DONTCARE)
 890                 return 0;
 891
 892         if (!(per & P_DEFINED))
 893                 return -ENODEV;
 894
 895         if (check_gpio(ident) < 0)
 896                 return -EINVAL;
 897
 898         local_irq_save(flags);
 899
 900         if (unlikely(reserved_gpio_map[gpio_bank(ident)] & gpio_bit(ident))) {
 901                 dump_stack();
 902                 printk(KERN_ERR
 903                     "%s: Peripheral %d is already reserved as GPIO by %s !\n",
 904                        __func__, ident, get_label(ident));
 905                 local_irq_restore(flags);
 906                 return -EBUSY;
 907         }
 908
 909         if (unlikely(reserved_peri_map[gpio_bank(ident)] & gpio_bit(ident))) {
 910
 911                 u16 funct = get_portmux(ident);
 912
 913                 /*
 914                  * Pin functions like AMC address strobes my
 915                  * be requested and used by several drivers
 916                  */
 917
 918                 if (!((per & P_MAYSHARE) && (funct == P_FUNCT2MUX(per)))) {
 919
 920                         /*
 921                          * Allow that the identical pin function can
 922                          * be requested from the same driver twice
 923                          */
 924
 925                         if (cmp_label(ident, label) == 0)
 926                                 goto anyway;
 927
 928                         dump_stack();
 929                         printk(KERN_ERR
 930                                "%s: Peripheral %d function %d is already reserved by %s !\n",
 931                                __func__, ident, P_FUNCT2MUX(per), get_label(ident));
 932                         local_irq_restore(flags);
 933                         return -EBUSY;
 934                 }
 935         }
 936
 937  anyway:
 938         reserved_peri_map[gpio_bank(ident)] |= gpio_bit(ident);
 939
 940         portmux_setup(ident, P_FUNCT2MUX(per));
 941         port_setup(ident, PERIPHERAL_USAGE);
 942
 943         local_irq_restore(flags);
 944         set_label(ident, label);
 945
 946         return 0;
 947 }
 948 EXPORT_SYMBOL(peripheral_request);
 949 #else
 950
 951 int peripheral_request(unsigned short per, const char *label)
 952 {
 953         unsigned long flags;
 954         unsigned short ident = P_IDENT(per);
 955
 956         /*
 957          * Don't cares are pins with only one dedicated function
 958          */
 959
 960         if (per & P_DONTCARE)
 961                 return 0;
 962
 963         if (!(per & P_DEFINED))
 964                 return -ENODEV;
 965
 966         local_irq_save(flags);
 967
 968         if (!check_gpio(ident)) {
 969
 970                 if (unlikely(reserved_gpio_map[gpio_bank(ident)] & gpio_bit(ident))) {
 971                         dump_stack();
 972                         printk(KERN_ERR
 973                                "%s: Peripheral %d is already reserved as GPIO by %s !\n",
 974                                __func__, ident, get_label(ident));
 975                         local_irq_restore(flags);
 976                         return -EBUSY;
 977                 }
 978
 979         }
 980
 981         if (unlikely(reserved_peri_map[gpio_bank(ident)] & gpio_bit(ident))) {
 982
 983                 /*
 984                  * Pin functions like AMC address strobes my
 985                  * be requested and used by several drivers
 986                  */
 987
 988                 if (!(per & P_MAYSHARE)) {
 989
 990                         /*
 991                          * Allow that the identical pin function can
 992                          * be requested from the same driver twice
 993                          */
 994
 995                         if (cmp_label(ident, label) == 0)
 996                                 goto anyway;
 997
 998                         dump_stack();
 999                         printk(KERN_ERR
1000                                "%s: Peripheral %d function %d is already"
1001                                " reserved by %s !\n",
1002                                __func__, ident, P_FUNCT2MUX(per),
1003                                 get_label(ident));
1004                         local_irq_restore(flags);
1005                         return -EBUSY;
1006                 }
1007
1008         }
1009
1010  anyway:
1011         portmux_setup(per, P_FUNCT2MUX(per));
1012
1013         port_setup(ident, PERIPHERAL_USAGE);
1014
1015         reserved_peri_map[gpio_bank(ident)] |= gpio_bit(ident);
1016         local_irq_restore(flags);
1017         set_label(ident, label);
1018
1019         return 0;
1020 }
1021 EXPORT_SYMBOL(peripheral_request);
1022 #endif
1023
1024 int peripheral_request_list(const unsigned short per[], const char *label)
1025 {
1026         u16 cnt;
1027         int ret;
1028
1029         for (cnt = 0; per[cnt] != 0; cnt++) {
1030
1031                 ret = peripheral_request(per[cnt], label);
1032
1033                 if (ret < 0) {
1034                         for ( ; cnt > 0; cnt--)
1035                                 peripheral_free(per[cnt - 1]);
1036
1037                         return ret;
1038                 }
1039         }
1040
1041         return 0;
1042 }
1043 EXPORT_SYMBOL(peripheral_request_list);
1044
1045 void peripheral_free(unsigned short per)
1046 {
1047         unsigned long flags;
1048         unsigned short ident = P_IDENT(per);
1049
1050         if (per & P_DONTCARE)
1051                 return;
1052
1053         if (!(per & P_DEFINED))
1054                 return;
1055
1056         if (check_gpio(ident) < 0)
1057                 return;
1058
1059         local_irq_save(flags);
1060
1061         if (unlikely(!(reserved_peri_map[gpio_bank(ident)] & gpio_bit(ident)))) {
1062                 local_irq_restore(flags);
1063                 return;
1064         }
1065
1066         if (!(per & P_MAYSHARE))
1067                 port_setup(ident, GPIO_USAGE);
1068
1069         reserved_peri_map[gpio_bank(ident)] &= ~gpio_bit(ident);
1070
1071         set_label(ident, "free");
1072
1073         local_irq_restore(flags);
1074 }
1075 EXPORT_SYMBOL(peripheral_free);
1076
1077 void peripheral_free_list(const unsigned short per[])
1078 {
1079         u16 cnt;
1080         for (cnt = 0; per[cnt] != 0; cnt++)
1081                 peripheral_free(per[cnt]);
1082 }
1083 EXPORT_SYMBOL(peripheral_free_list);
1084
1085 /***********************************************************
1086 *
1087 * FUNCTIONS: Blackfin GPIO Driver
1088 *
1089 * INPUTS/OUTPUTS:
1090 * gpio  PIO Number between 0 and MAX_BLACKFIN_GPIOS
1091 * label String
1092 *
1093 * DESCRIPTION: Blackfin GPIO Driver API
1094 *
1095 * CAUTION:
1096 *************************************************************
1097 * MODIFICATION HISTORY :
1098 **************************************************************/
1099
1100 int gpio_request(unsigned gpio, const char *label)
1101 {
1102         unsigned long flags;
1103
1104         if (check_gpio(gpio) < 0)
1105                 return -EINVAL;
1106
1107         local_irq_save(flags);
1108
1109         /*
1110          * Allow that the identical GPIO can
1111          * be requested from the same driver twice
1112          * Do nothing and return -
1113          */
1114
1115         if (cmp_label(gpio, label) == 0) {
1116                 local_irq_restore(flags);
1117                 return 0;
1118         }
1119
1120         if (unlikely(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
1121                 dump_stack();
1122                 printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved by %s !\n",
1123                          gpio, get_label(gpio));
1124                 local_irq_restore(flags);
1125                 return -EBUSY;
1126         }
1127         if (unlikely(reserved_peri_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
1128                 dump_stack();
1129                 printk(KERN_ERR
1130                        "bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
1131                        gpio, get_label(gpio));
1132                 local_irq_restore(flags);
1133                 return -EBUSY;
1134         }
1135
1136         reserved_gpio_map[gpio_bank(gpio)] |= gpio_bit(gpio);
1137
1138         local_irq_restore(flags);
1139
1140         port_setup(gpio, GPIO_USAGE);
1141         set_label(gpio, label);
1142
1143         return 0;
1144 }
1145 EXPORT_SYMBOL(gpio_request);
1146
1147 void gpio_free(unsigned gpio)
1148 {
1149         unsigned long flags;
1150
1151         if (check_gpio(gpio) < 0)
1152                 return;
1153
1154         local_irq_save(flags);
1155
1156         if (unlikely(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)))) {
1157                 dump_stack();
1158                 gpio_error(gpio);
1159                 local_irq_restore(flags);
1160                 return;
1161         }
1162
1163         reserved_gpio_map[gpio_bank(gpio)] &= ~gpio_bit(gpio);
1164
1165         set_label(gpio, "free");
1166
1167         local_irq_restore(flags);
1168 }
1169 EXPORT_SYMBOL(gpio_free);
1170
1171
1172 #ifdef BF548_FAMILY
1173 int gpio_direction_input(unsigned gpio)
1174 {
1175         unsigned long flags;
1176
1177         if (!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
1178                 gpio_error(gpio);
1179                 return -EINVAL;
1180         }
1181
1182         local_irq_save(flags);
1183         gpio_array[gpio_bank(gpio)]->port_dir_clear = gpio_bit(gpio);
1184         gpio_array[gpio_bank(gpio)]->port_inen |= gpio_bit(gpio);
1185         local_irq_restore(flags);
1186
1187         return 0;
1188 }
1189 EXPORT_SYMBOL(gpio_direction_input);
1190
1191 int gpio_direction_output(unsigned gpio, int value)
1192 {
1193         unsigned long flags;
1194
1195         if (!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
1196                 gpio_error(gpio);
1197                 return -EINVAL;
1198         }
1199
1200         local_irq_save(flags);
1201         gpio_array[gpio_bank(gpio)]->port_inen &= ~gpio_bit(gpio);
1202         gpio_set_value(gpio, value);
1203         gpio_array[gpio_bank(gpio)]->port_dir_set = gpio_bit(gpio);
1204         local_irq_restore(flags);
1205
1206         return 0;
1207 }
1208 EXPORT_SYMBOL(gpio_direction_output);
1209
1210 void gpio_set_value(unsigned gpio, int arg)
1211 {
1212         if (arg)
1213                 gpio_array[gpio_bank(gpio)]->port_set = gpio_bit(gpio);
1214         else
1215                 gpio_array[gpio_bank(gpio)]->port_clear = gpio_bit(gpio);
1216 }
1217 EXPORT_SYMBOL(gpio_set_value);
1218
1219 int gpio_get_value(unsigned gpio)
1220 {
1221         return (1 & (gpio_array[gpio_bank(gpio)]->port_data >> gpio_sub_n(gpio)));
1222 }
1223 EXPORT_SYMBOL(gpio_get_value);
1224
1225 void bfin_gpio_irq_prepare(unsigned gpio)
1226 {
1227         unsigned long flags;
1228
1229         port_setup(gpio, GPIO_USAGE);
1230
1231         local_irq_save(flags);
1232         gpio_array[gpio_bank(gpio)]->port_dir_clear = gpio_bit(gpio);
1233         gpio_array[gpio_bank(gpio)]->port_inen |= gpio_bit(gpio);
1234         local_irq_restore(flags);
1235 }
1236
1237 #else
1238
1239 int gpio_get_value(unsigned gpio)
1240 {
1241         unsigned long flags;
1242         int ret;
1243
1244         if (unlikely(get_gpio_edge(gpio))) {
1245                 local_irq_save(flags);
1246                 set_gpio_edge(gpio, 0);
1247                 ret = get_gpio_data(gpio);
1248                 set_gpio_edge(gpio, 1);
1249                 local_irq_restore(flags);
1250
1251                 return ret;
1252         } else
1253                 return get_gpio_data(gpio);
1254 }
1255 EXPORT_SYMBOL(gpio_get_value);
1256
1257
1258 int gpio_direction_input(unsigned gpio)
1259 {
1260         unsigned long flags;
1261
1262         if (!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
1263                 gpio_error(gpio);
1264                 return -EINVAL;
1265         }
1266
1267         local_irq_save(flags);
1268         gpio_bankb[gpio_bank(gpio)]->dir &= ~gpio_bit(gpio);
1269         gpio_bankb[gpio_bank(gpio)]->inen |= gpio_bit(gpio);
1270         AWA_DUMMY_READ(inen);
1271         local_irq_restore(flags);
1272
1273         return 0;
1274 }
1275 EXPORT_SYMBOL(gpio_direction_input);
1276
1277 int gpio_direction_output(unsigned gpio, int value)
1278 {
1279         unsigned long flags;
1280
1281         if (!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
1282                 gpio_error(gpio);
1283                 return -EINVAL;
1284         }
1285
1286         local_irq_save(flags);
1287         gpio_bankb[gpio_bank(gpio)]->inen &= ~gpio_bit(gpio);
1288
1289         if (value)
1290                 gpio_bankb[gpio_bank(gpio)]->data_set = gpio_bit(gpio);
1291         else
1292                 gpio_bankb[gpio_bank(gpio)]->data_clear = gpio_bit(gpio);
1293
1294         gpio_bankb[gpio_bank(gpio)]->dir |= gpio_bit(gpio);
1295         AWA_DUMMY_READ(dir);
1296         local_irq_restore(flags);
1297
1298         return 0;
1299 }
1300 EXPORT_SYMBOL(gpio_direction_output);
1301
1302 /* If we are booting from SPI and our board lacks a strong enough pull up,
1303  * the core can reset and execute the bootrom faster than the resistor can
1304  * pull the signal logically high.  To work around this (common) error in
1305  * board design, we explicitly set the pin back to GPIO mode, force /CS
1306  * high, and wait for the electrons to do their thing.
1307  *
1308  * This function only makes sense to be called from reset code, but it
1309  * lives here as we need to force all the GPIO states w/out going through
1310  * BUG() checks and such.
1311  */
1312 void bfin_gpio_reset_spi0_ssel1(void)
1313 {
1314         u16 gpio = P_IDENT(P_SPI0_SSEL1);
1315
1316         port_setup(gpio, GPIO_USAGE);
1317         gpio_bankb[gpio_bank(gpio)]->data_set = gpio_bit(gpio);
1318         AWA_DUMMY_READ(data_set);
1319         udelay(1);
1320 }
1321
1322 void bfin_gpio_irq_prepare(unsigned gpio)
1323 {
1324         port_setup(gpio, GPIO_USAGE);
1325 }
1326
1327 #endif /*BF548_FAMILY */
1328
1329 #if defined(CONFIG_PROC_FS)
1330 static int gpio_proc_read(char *buf, char **start, off_t offset,
1331                           int len, int *unused_i, void *unused_v)
1332 {
1333         int c, outlen = 0;
1334
1335         for (c = 0; c < MAX_RESOURCES; c++) {
1336                 if (!check_gpio(c) && (reserved_gpio_map[gpio_bank(c)] & gpio_bit(c)))
1337                         len = sprintf(buf, "GPIO_%d: %s \t\tGPIO %s\n", c,
1338                                  get_label(c), get_gpio_dir(c) ? "OUTPUT" : "INPUT");
1339                 else if (reserved_peri_map[gpio_bank(c)] & gpio_bit(c))
1340                         len = sprintf(buf, "GPIO_%d: %s \t\tPeripheral\n", c, get_label(c));
1341                 else
1342                         continue;
1343                 buf += len;
1344                 outlen += len;
1345         }
1346         return outlen;
1347 }
1348
1349 static __init int gpio_register_proc(void)
1350 {
1351         struct proc_dir_entry *proc_gpio;
1352
1353         proc_gpio = create_proc_entry("gpio", S_IRUGO, NULL);
1354         if (proc_gpio)
1355                 proc_gpio->read_proc = gpio_proc_read;
1356         return proc_gpio != NULL;
1357 }
1358 __initcall(gpio_register_proc);
1359 #endif