arch/blackfin/kernel/bfin_gpio.c

   1 /*
   2  * GPIO Abstraction Layer
   3  *
   4  * Copyright 2006-2009 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later
   7  */
   8
   9 #include <linux/delay.h>
  10 #include <linux/module.h>
  11 #include <linux/err.h>
  12 #include <linux/proc_fs.h>
  13 #include <asm/blackfin.h>
  14 #include <asm/gpio.h>
  15 #include <asm/portmux.h>
  16 #include <linux/irq.h>
  17
  18 #if ANOMALY_05000311 || ANOMALY_05000323
  19 enum {
  20         AWA_data = SYSCR,
  21         AWA_data_clear = SYSCR,
  22         AWA_data_set = SYSCR,
  23         AWA_toggle = SYSCR,
  24         AWA_maska = BFIN_UART_SCR,
  25         AWA_maska_clear = BFIN_UART_SCR,
  26         AWA_maska_set = BFIN_UART_SCR,
  27         AWA_maska_toggle = BFIN_UART_SCR,
  28         AWA_maskb = BFIN_UART_GCTL,
  29         AWA_maskb_clear = BFIN_UART_GCTL,
  30         AWA_maskb_set = BFIN_UART_GCTL,
  31         AWA_maskb_toggle = BFIN_UART_GCTL,
  32         AWA_dir = SPORT1_STAT,
  33         AWA_polar = SPORT1_STAT,
  34         AWA_edge = SPORT1_STAT,
  35         AWA_both = SPORT1_STAT,
  36 #if ANOMALY_05000311
  37         AWA_inen = TIMER_ENABLE,
  38 #elif ANOMALY_05000323
  39         AWA_inen = DMA1_1_CONFIG,
  40 #endif
  41 };
  42         /* Anomaly Workaround */
  43 #define AWA_DUMMY_READ(name) bfin_read16(AWA_ ## name)
  44 #else
  45 #define AWA_DUMMY_READ(...)  do { } while (0)
  46 #endif
  47
  48 static struct gpio_port_t * const gpio_array[] = {
  49 #if defined(BF533_FAMILY) || defined(BF538_FAMILY)
  50         (struct gpio_port_t *) FIO_FLAG_D,
  51 #elif defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
  52         (struct gpio_port_t *) PORTFIO,
  53         (struct gpio_port_t *) PORTGIO,
  54         (struct gpio_port_t *) PORTHIO,
  55 #elif defined(BF561_FAMILY)
  56         (struct gpio_port_t *) FIO0_FLAG_D,
  57         (struct gpio_port_t *) FIO1_FLAG_D,
  58         (struct gpio_port_t *) FIO2_FLAG_D,
  59 #elif defined(CONFIG_BF54x)
  60         (struct gpio_port_t *)PORTA_FER,
  61         (struct gpio_port_t *)PORTB_FER,
  62         (struct gpio_port_t *)PORTC_FER,
  63         (struct gpio_port_t *)PORTD_FER,
  64         (struct gpio_port_t *)PORTE_FER,
  65         (struct gpio_port_t *)PORTF_FER,
  66         (struct gpio_port_t *)PORTG_FER,
  67         (struct gpio_port_t *)PORTH_FER,
  68         (struct gpio_port_t *)PORTI_FER,
  69         (struct gpio_port_t *)PORTJ_FER,
  70 #else
  71 # error no gpio arrays defined
  72 #endif
  73 };
  74
  75 #if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
  76 static unsigned short * const port_fer[] = {
  77         (unsigned short *) PORTF_FER,
  78         (unsigned short *) PORTG_FER,
  79         (unsigned short *) PORTH_FER,
  80 };
  81
  82 # if !defined(BF537_FAMILY)
  83 static unsigned short * const port_mux[] = {
  84         (unsigned short *) PORTF_MUX,
  85         (unsigned short *) PORTG_MUX,
  86         (unsigned short *) PORTH_MUX,
  87 };
  88
  89 static const
  90 u8 pmux_offset[][16] = {
  91 #  if defined(CONFIG_BF52x)
  92         { 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 4, 6, 8, 8, 10, 10 }, /* PORTF */
  93         { 0, 0, 0, 0, 0, 2, 2, 4, 4, 6, 8, 10, 10, 10, 12, 12 }, /* PORTG */
  94         { 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 4, 4, 4, 4, 4, 4 }, /* PORTH */
  95 #  elif defined(CONFIG_BF51x)
  96         { 0, 2, 2, 2, 2, 2, 2, 4, 6, 6, 6, 8, 8, 8, 8, 10 }, /* PORTF */
  97         { 0, 0, 0, 2, 4, 6, 6, 6, 8, 10, 10, 12, 14, 14, 14, 14 }, /* PORTG */
  98         { 0, 0, 0, 0, 2, 2, 4, 6, 10, 10, 10, 10, 10, 10, 10, 10 }, /* PORTH */
  99 #  endif
 100 };
 101 # endif
 102
 103 #endif
 104
 105 static unsigned short reserved_gpio_map[GPIO_BANK_NUM];
 106 static unsigned short reserved_peri_map[gpio_bank(MAX_RESOURCES)];
 107 static unsigned short reserved_gpio_irq_map[GPIO_BANK_NUM];
 108
 109 #define RESOURCE_LABEL_SIZE     16
 110
 111 static struct str_ident {
 112         char name[RESOURCE_LABEL_SIZE];
 113 } str_ident[MAX_RESOURCES];
 114
 115 #if defined(CONFIG_PM)
 116 static struct gpio_port_s gpio_bank_saved[GPIO_BANK_NUM];
 117 #endif
 118
 119 inline int check_gpio(unsigned gpio)
 120 {
 121 #if defined(CONFIG_BF54x)
 122         if (gpio == GPIO_PB15 || gpio == GPIO_PC14 || gpio == GPIO_PC15
 123             || gpio == GPIO_PH14 || gpio == GPIO_PH15
 124             || gpio == GPIO_PJ14 || gpio == GPIO_PJ15)
 125                 return -EINVAL;
 126 #endif
 127         if (gpio >= MAX_BLACKFIN_GPIOS)
 128                 return -EINVAL;
 129         return 0;
 130 }
 131
 132 static void gpio_error(unsigned gpio)
 133 {
 134         printk(KERN_ERR "bfin-gpio: GPIO %d wasn't requested!\n", gpio);
 135 }
 136
 137 static void set_label(unsigned short ident, const char *label)
 138 {
 139         if (label) {
 140                 strncpy(str_ident[ident].name, label,
 141                          RESOURCE_LABEL_SIZE);
 142                 str_ident[ident].name[RESOURCE_LABEL_SIZE - 1] = 0;
 143         }
 144 }
 145
 146 static char *get_label(unsigned short ident)
 147 {
 148         return (*str_ident[ident].name ? str_ident[ident].name : "UNKNOWN");
 149 }
 150
 151 static int cmp_label(unsigned short ident, const char *label)
 152 {
 153         if (label == NULL) {
 154                 dump_stack();
 155                 printk(KERN_ERR "Please provide none-null label\n");
 156         }
 157
 158         if (label)
 159                 return strcmp(str_ident[ident].name, label);
 160         else
 161                 return -EINVAL;
 162 }
 163
 164 static void port_setup(unsigned gpio, unsigned short usage)
 165 {
 166         if (check_gpio(gpio))
 167                 return;
 168
 169 #if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
 170         if (usage == GPIO_USAGE)
 171                 *port_fer[gpio_bank(gpio)] &= ~gpio_bit(gpio);
 172         else
 173                 *port_fer[gpio_bank(gpio)] |= gpio_bit(gpio);
 174         SSYNC();
 175 #elif defined(CONFIG_BF54x)
 176         if (usage == GPIO_USAGE)
 177                 gpio_array[gpio_bank(gpio)]->port_fer &= ~gpio_bit(gpio);
 178         else
 179                 gpio_array[gpio_bank(gpio)]->port_fer |= gpio_bit(gpio);
 180         SSYNC();
 181 #endif
 182 }
 183
 184 #ifdef BF537_FAMILY
 185 static struct {
 186         unsigned short res;
 187         unsigned short offset;
 188 } port_mux_lut[] = {
 189         {.res = P_PPI0_D13, .offset = 11},
 190         {.res = P_PPI0_D14, .offset = 11},
 191         {.res = P_PPI0_D15, .offset = 11},
 192         {.res = P_SPORT1_TFS, .offset = 11},
 193         {.res = P_SPORT1_TSCLK, .offset = 11},
 194         {.res = P_SPORT1_DTPRI, .offset = 11},
 195         {.res = P_PPI0_D10, .offset = 10},
 196         {.res = P_PPI0_D11, .offset = 10},
 197         {.res = P_PPI0_D12, .offset = 10},
 198         {.res = P_SPORT1_RSCLK, .offset = 10},
 199         {.res = P_SPORT1_RFS, .offset = 10},
 200         {.res = P_SPORT1_DRPRI, .offset = 10},
 201         {.res = P_PPI0_D8, .offset = 9},
 202         {.res = P_PPI0_D9, .offset = 9},
 203         {.res = P_SPORT1_DRSEC, .offset = 9},
 204         {.res = P_SPORT1_DTSEC, .offset = 9},
 205         {.res = P_TMR2, .offset = 8},
 206         {.res = P_PPI0_FS3, .offset = 8},
 207         {.res = P_TMR3, .offset = 7},
 208         {.res = P_SPI0_SSEL4, .offset = 7},
 209         {.res = P_TMR4, .offset = 6},
 210         {.res = P_SPI0_SSEL5, .offset = 6},
 211         {.res = P_TMR5, .offset = 5},
 212         {.res = P_SPI0_SSEL6, .offset = 5},
 213         {.res = P_UART1_RX, .offset = 4},
 214         {.res = P_UART1_TX, .offset = 4},
 215         {.res = P_TMR6, .offset = 4},
 216         {.res = P_TMR7, .offset = 4},
 217         {.res = P_UART0_RX, .offset = 3},
 218         {.res = P_UART0_TX, .offset = 3},
 219         {.res = P_DMAR0, .offset = 3},
 220         {.res = P_DMAR1, .offset = 3},
 221         {.res = P_SPORT0_DTSEC, .offset = 1},
 222         {.res = P_SPORT0_DRSEC, .offset = 1},
 223         {.res = P_CAN0_RX, .offset = 1},
 224         {.res = P_CAN0_TX, .offset = 1},
 225         {.res = P_SPI0_SSEL7, .offset = 1},
 226         {.res = P_SPORT0_TFS, .offset = 0},
 227         {.res = P_SPORT0_DTPRI, .offset = 0},
 228         {.res = P_SPI0_SSEL2, .offset = 0},
 229         {.res = P_SPI0_SSEL3, .offset = 0},
 230 };
 231
 232 static void portmux_setup(unsigned short per)
 233 {
 234         u16 y, offset, muxreg;
 235         u16 function = P_FUNCT2MUX(per);
 236
 237         for (y = 0; y < ARRAY_SIZE(port_mux_lut); y++) {
 238                 if (port_mux_lut[y].res == per) {
 239
 240                         /* SET PORTMUX REG */
 241
 242                         offset = port_mux_lut[y].offset;
 243                         muxreg = bfin_read_PORT_MUX();
 244
 245                         if (offset != 1)
 246                                 muxreg &= ~(1 << offset);
 247                         else
 248                                 muxreg &= ~(3 << 1);
 249
 250                         muxreg |= (function << offset);
 251                         bfin_write_PORT_MUX(muxreg);
 252                 }
 253         }
 254 }
 255 #elif defined(CONFIG_BF54x)
 256 inline void portmux_setup(unsigned short per)
 257 {
 258         u32 pmux;
 259         u16 ident = P_IDENT(per);
 260         u16 function = P_FUNCT2MUX(per);
 261
 262         pmux = gpio_array[gpio_bank(ident)]->port_mux;
 263
 264         pmux &= ~(0x3 << (2 * gpio_sub_n(ident)));
 265         pmux |= (function & 0x3) << (2 * gpio_sub_n(ident));
 266
 267         gpio_array[gpio_bank(ident)]->port_mux = pmux;
 268 }
 269
 270 inline u16 get_portmux(unsigned short per)
 271 {
 272         u32 pmux;
 273         u16 ident = P_IDENT(per);
 274
 275         pmux = gpio_array[gpio_bank(ident)]->port_mux;
 276
 277         return (pmux >> (2 * gpio_sub_n(ident)) & 0x3);
 278 }
 279 #elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
 280 inline void portmux_setup(unsigned short per)
 281 {
 282         u16 pmux, ident = P_IDENT(per), function = P_FUNCT2MUX(per);
 283         u8 offset = pmux_offset[gpio_bank(ident)][gpio_sub_n(ident)];
 284
 285         pmux = *port_mux[gpio_bank(ident)];
 286         pmux &= ~(3 << offset);
 287         pmux |= (function & 3) << offset;
 288         *port_mux[gpio_bank(ident)] = pmux;
 289         SSYNC();
 290 }
 291 #else
 292 # define portmux_setup(...)  do { } while (0)
 293 #endif
 294
 295 #ifndef CONFIG_BF54x
 296 /***********************************************************
 297 *
 298 * FUNCTIONS: Blackfin General Purpose Ports Access Functions
 299 *
 300 * INPUTS/OUTPUTS:
 301 * gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
 302 *
 303 *
 304 * DESCRIPTION: These functions abstract direct register access
 305 *              to Blackfin processor General Purpose
 306 *              Ports Regsiters
 307 *
 308 * CAUTION: These functions do not belong to the GPIO Driver API
 309 *************************************************************
 310 * MODIFICATION HISTORY :
 311 **************************************************************/
 312
 313 /* Set a specific bit */
 314
 315 #define SET_GPIO(name) \
 316 void set_gpio_ ## name(unsigned gpio, unsigned short arg) \
 317 { \
 318         unsigned long flags; \
 319         local_irq_save_hw(flags); \
 320         if (arg) \
 321                 gpio_array[gpio_bank(gpio)]->name |= gpio_bit(gpio); \
 322         else \
 323                 gpio_array[gpio_bank(gpio)]->name &= ~gpio_bit(gpio); \
 324         AWA_DUMMY_READ(name); \
 325         local_irq_restore_hw(flags); \
 326 } \
 327 EXPORT_SYMBOL(set_gpio_ ## name);
 328
 329 SET_GPIO(dir)   /* set_gpio_dir() */
 330 SET_GPIO(inen)  /* set_gpio_inen() */
 331 SET_GPIO(polar) /* set_gpio_polar() */
 332 SET_GPIO(edge)  /* set_gpio_edge() */
 333 SET_GPIO(both)  /* set_gpio_both() */
 334
 335
 336 #define SET_GPIO_SC(name) \
 337 void set_gpio_ ## name(unsigned gpio, unsigned short arg) \
 338 { \
 339         unsigned long flags; \
 340         if (ANOMALY_05000311 || ANOMALY_05000323) \
 341                 local_irq_save_hw(flags); \
 342         if (arg) \
 343                 gpio_array[gpio_bank(gpio)]->name ## _set = gpio_bit(gpio); \
 344         else \
 345                 gpio_array[gpio_bank(gpio)]->name ## _clear = gpio_bit(gpio); \
 346         if (ANOMALY_05000311 || ANOMALY_05000323) { \
 347                 AWA_DUMMY_READ(name); \
 348                 local_irq_restore_hw(flags); \
 349         } \
 350 } \
 351 EXPORT_SYMBOL(set_gpio_ ## name);
 352
 353 SET_GPIO_SC(maska)
 354 SET_GPIO_SC(maskb)
 355 SET_GPIO_SC(data)
 356
 357 void set_gpio_toggle(unsigned gpio)
 358 {
 359         unsigned long flags;
 360         if (ANOMALY_05000311 || ANOMALY_05000323)
 361                 local_irq_save_hw(flags);
 362         gpio_array[gpio_bank(gpio)]->toggle = gpio_bit(gpio);
 363         if (ANOMALY_05000311 || ANOMALY_05000323) {
 364                 AWA_DUMMY_READ(toggle);
 365                 local_irq_restore_hw(flags);
 366         }
 367 }
 368 EXPORT_SYMBOL(set_gpio_toggle);
 369
 370
 371 /*Set current PORT date (16-bit word)*/
 372
 373 #define SET_GPIO_P(name) \
 374 void set_gpiop_ ## name(unsigned gpio, unsigned short arg) \
 375 { \
 376         unsigned long flags; \
 377         if (ANOMALY_05000311 || ANOMALY_05000323) \
 378                 local_irq_save_hw(flags); \
 379         gpio_array[gpio_bank(gpio)]->name = arg; \
 380         if (ANOMALY_05000311 || ANOMALY_05000323) { \
 381                 AWA_DUMMY_READ(name); \
 382                 local_irq_restore_hw(flags); \
 383         } \
 384 } \
 385 EXPORT_SYMBOL(set_gpiop_ ## name);
 386
 387 SET_GPIO_P(data)
 388 SET_GPIO_P(dir)
 389 SET_GPIO_P(inen)
 390 SET_GPIO_P(polar)
 391 SET_GPIO_P(edge)
 392 SET_GPIO_P(both)
 393 SET_GPIO_P(maska)
 394 SET_GPIO_P(maskb)
 395
 396 /* Get a specific bit */
 397 #define GET_GPIO(name) \
 398 unsigned short get_gpio_ ## name(unsigned gpio) \
 399 { \
 400         unsigned long flags; \
 401         unsigned short ret; \
 402         if (ANOMALY_05000311 || ANOMALY_05000323) \
 403                 local_irq_save_hw(flags); \
 404         ret = 0x01 & (gpio_array[gpio_bank(gpio)]->name >> gpio_sub_n(gpio)); \
 405         if (ANOMALY_05000311 || ANOMALY_05000323) { \
 406                 AWA_DUMMY_READ(name); \
 407                 local_irq_restore_hw(flags); \
 408         } \
 409         return ret; \
 410 } \
 411 EXPORT_SYMBOL(get_gpio_ ## name);
 412
 413 GET_GPIO(data)
 414 GET_GPIO(dir)
 415 GET_GPIO(inen)
 416 GET_GPIO(polar)
 417 GET_GPIO(edge)
 418 GET_GPIO(both)
 419 GET_GPIO(maska)
 420 GET_GPIO(maskb)
 421
 422 /*Get current PORT date (16-bit word)*/
 423
 424 #define GET_GPIO_P(name) \
 425 unsigned short get_gpiop_ ## name(unsigned gpio) \
 426 { \
 427         unsigned long flags; \
 428         unsigned short ret; \
 429         if (ANOMALY_05000311 || ANOMALY_05000323) \
 430                 local_irq_save_hw(flags); \
 431         ret = (gpio_array[gpio_bank(gpio)]->name); \
 432         if (ANOMALY_05000311 || ANOMALY_05000323) { \
 433                 AWA_DUMMY_READ(name); \
 434                 local_irq_restore_hw(flags); \
 435         } \
 436         return ret; \
 437 } \
 438 EXPORT_SYMBOL(get_gpiop_ ## name);
 439
 440 GET_GPIO_P(data)
 441 GET_GPIO_P(dir)
 442 GET_GPIO_P(inen)
 443 GET_GPIO_P(polar)
 444 GET_GPIO_P(edge)
 445 GET_GPIO_P(both)
 446 GET_GPIO_P(maska)
 447 GET_GPIO_P(maskb)
 448
 449
 450 #ifdef CONFIG_PM
 451
 452 static unsigned short wakeup_map[GPIO_BANK_NUM];
 453 static unsigned char wakeup_flags_map[MAX_BLACKFIN_GPIOS];
 454
 455 static const unsigned int sic_iwr_irqs[] = {
 456 #if defined(BF533_FAMILY)
 457         IRQ_PROG_INTB
 458 #elif defined(BF537_FAMILY)
 459         IRQ_PROG_INTB, IRQ_PORTG_INTB, IRQ_MAC_TX
 460 #elif defined(BF538_FAMILY)
 461         IRQ_PORTF_INTB
 462 #elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
 463         IRQ_PORTF_INTB, IRQ_PORTG_INTB, IRQ_PORTH_INTB
 464 #elif defined(BF561_FAMILY)
 465         IRQ_PROG0_INTB, IRQ_PROG1_INTB, IRQ_PROG2_INTB
 466 #else
 467 # error no SIC_IWR defined
 468 #endif
 469 };
 470
 471 /***********************************************************
 472 *
 473 * FUNCTIONS: Blackfin PM Setup API
 474 *
 475 * INPUTS/OUTPUTS:
 476 * gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
 477 * type -
 478 *       PM_WAKE_RISING
 479 *       PM_WAKE_FALLING
 480 *       PM_WAKE_HIGH
 481 *       PM_WAKE_LOW
 482 *       PM_WAKE_BOTH_EDGES
 483 *
 484 * DESCRIPTION: Blackfin PM Driver API
 485 *
 486 * CAUTION:
 487 *************************************************************
 488 * MODIFICATION HISTORY :
 489 **************************************************************/
 490 int gpio_pm_wakeup_request(unsigned gpio, unsigned char type)
 491 {
 492         unsigned long flags;
 493
 494         if ((check_gpio(gpio) < 0) || !type)
 495                 return -EINVAL;
 496
 497         local_irq_save_hw(flags);
 498         wakeup_map[gpio_bank(gpio)] |= gpio_bit(gpio);
 499         wakeup_flags_map[gpio] = type;
 500         local_irq_restore_hw(flags);
 501
 502         return 0;
 503 }
 504 EXPORT_SYMBOL(gpio_pm_wakeup_request);
 505
 506 void gpio_pm_wakeup_free(unsigned gpio)
 507 {
 508         unsigned long flags;
 509
 510         if (check_gpio(gpio) < 0)
 511                 return;
 512
 513         local_irq_save_hw(flags);
 514
 515         wakeup_map[gpio_bank(gpio)] &= ~gpio_bit(gpio);
 516
 517         local_irq_restore_hw(flags);
 518 }
 519 EXPORT_SYMBOL(gpio_pm_wakeup_free);
 520
 521 static int bfin_gpio_wakeup_type(unsigned gpio, unsigned char type)
 522 {
 523         port_setup(gpio, GPIO_USAGE);
 524         set_gpio_dir(gpio, 0);
 525         set_gpio_inen(gpio, 1);
 526
 527         if (type & (PM_WAKE_RISING | PM_WAKE_FALLING))
 528                 set_gpio_edge(gpio, 1);
 529          else
 530                 set_gpio_edge(gpio, 0);
 531
 532         if ((type & (PM_WAKE_BOTH_EDGES)) == (PM_WAKE_BOTH_EDGES))
 533                 set_gpio_both(gpio, 1);
 534         else
 535                 set_gpio_both(gpio, 0);
 536
 537         if ((type & (PM_WAKE_FALLING | PM_WAKE_LOW)))
 538                 set_gpio_polar(gpio, 1);
 539         else
 540                 set_gpio_polar(gpio, 0);
 541
 542         SSYNC();
 543
 544         return 0;
 545 }
 546
 547 u32 bfin_pm_standby_setup(void)
 548 {
 549         u16 bank, mask, i, gpio;
 550
 551         for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
 552                 mask = wakeup_map[gpio_bank(i)];
 553                 bank = gpio_bank(i);
 554
 555                 gpio_bank_saved[bank].maskb = gpio_array[bank]->maskb;
 556                 gpio_array[bank]->maskb = 0;
 557
 558                 if (mask) {
 559 #if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
 560                         gpio_bank_saved[bank].fer   = *port_fer[bank];
 561 #endif
 562                         gpio_bank_saved[bank].inen  = gpio_array[bank]->inen;
 563                         gpio_bank_saved[bank].polar = gpio_array[bank]->polar;
 564                         gpio_bank_saved[bank].dir   = gpio_array[bank]->dir;
 565                         gpio_bank_saved[bank].edge  = gpio_array[bank]->edge;
 566                         gpio_bank_saved[bank].both  = gpio_array[bank]->both;
 567                         gpio_bank_saved[bank].reserved =
 568                                                 reserved_gpio_map[bank];
 569
 570                         gpio = i;
 571
 572                         while (mask) {
 573                                 if ((mask & 1) && (wakeup_flags_map[gpio] !=
 574                                         PM_WAKE_IGNORE)) {
 575                                         reserved_gpio_map[gpio_bank(gpio)] |=
 576                                                         gpio_bit(gpio);
 577                                         bfin_gpio_wakeup_type(gpio,
 578                                                 wakeup_flags_map[gpio]);
 579                                         set_gpio_data(gpio, 0); /*Clear*/
 580                                 }
 581                                 gpio++;
 582                                 mask >>= 1;
 583                         }
 584
 585                         bfin_internal_set_wake(sic_iwr_irqs[bank], 1);
 586                         gpio_array[bank]->maskb_set = wakeup_map[gpio_bank(i)];
 587                 }
 588         }
 589
 590         AWA_DUMMY_READ(maskb_set);
 591
 592         return 0;
 593 }
 594
 595 void bfin_pm_standby_restore(void)
 596 {
 597         u16 bank, mask, i;
 598
 599         for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
 600                 mask = wakeup_map[gpio_bank(i)];
 601                 bank = gpio_bank(i);
 602
 603                 if (mask) {
 604 #if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
 605                         *port_fer[bank]         = gpio_bank_saved[bank].fer;
 606 #endif
 607                         gpio_array[bank]->inen  = gpio_bank_saved[bank].inen;
 608                         gpio_array[bank]->dir   = gpio_bank_saved[bank].dir;
 609                         gpio_array[bank]->polar = gpio_bank_saved[bank].polar;
 610                         gpio_array[bank]->edge  = gpio_bank_saved[bank].edge;
 611                         gpio_array[bank]->both  = gpio_bank_saved[bank].both;
 612
 613                         reserved_gpio_map[bank] =
 614                                         gpio_bank_saved[bank].reserved;
 615                         bfin_internal_set_wake(sic_iwr_irqs[bank], 0);
 616                 }
 617
 618                 gpio_array[bank]->maskb = gpio_bank_saved[bank].maskb;
 619         }
 620         AWA_DUMMY_READ(maskb);
 621 }
 622
 623 void bfin_gpio_pm_hibernate_suspend(void)
 624 {
 625         int i, bank;
 626
 627         for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
 628                 bank = gpio_bank(i);
 629
 630 #if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
 631                 gpio_bank_saved[bank].fer = *port_fer[bank];
 632 #if defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
 633                 gpio_bank_saved[bank].mux = *port_mux[bank];
 634 #else
 635                 if (bank == 0)
 636                         gpio_bank_saved[bank].mux = bfin_read_PORT_MUX();
 637 #endif
 638 #endif
 639                 gpio_bank_saved[bank].data  = gpio_array[bank]->data;
 640                 gpio_bank_saved[bank].inen  = gpio_array[bank]->inen;
 641                 gpio_bank_saved[bank].polar = gpio_array[bank]->polar;
 642                 gpio_bank_saved[bank].dir   = gpio_array[bank]->dir;
 643                 gpio_bank_saved[bank].edge  = gpio_array[bank]->edge;
 644                 gpio_bank_saved[bank].both  = gpio_array[bank]->both;
 645                 gpio_bank_saved[bank].maska = gpio_array[bank]->maska;
 646         }
 647
 648         AWA_DUMMY_READ(maska);
 649 }
 650
 651 void bfin_gpio_pm_hibernate_restore(void)
 652 {
 653         int i, bank;
 654
 655         for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
 656                 bank = gpio_bank(i);
 657
 658 #if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
 659 #if defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
 660                 *port_mux[bank] = gpio_bank_saved[bank].mux;
 661 #else
 662                 if (bank == 0)
 663                         bfin_write_PORT_MUX(gpio_bank_saved[bank].mux);
 664 #endif
 665                 *port_fer[bank] = gpio_bank_saved[bank].fer;
 666 #endif
 667                 gpio_array[bank]->inen  = gpio_bank_saved[bank].inen;
 668                 gpio_array[bank]->data_set = gpio_bank_saved[bank].data
 669                                                 & gpio_bank_saved[bank].dir;
 670                 gpio_array[bank]->dir   = gpio_bank_saved[bank].dir;
 671                 gpio_array[bank]->polar = gpio_bank_saved[bank].polar;
 672                 gpio_array[bank]->edge  = gpio_bank_saved[bank].edge;
 673                 gpio_array[bank]->both  = gpio_bank_saved[bank].both;
 674                 gpio_array[bank]->maska = gpio_bank_saved[bank].maska;
 675         }
 676         AWA_DUMMY_READ(maska);
 677 }
 678
 679
 680 #endif
 681 #else /* CONFIG_BF54x */
 682 #ifdef CONFIG_PM
 683
 684 u32 bfin_pm_standby_setup(void)
 685 {
 686         return 0;
 687 }
 688
 689 void bfin_pm_standby_restore(void)
 690 {
 691
 692 }
 693
 694 void bfin_gpio_pm_hibernate_suspend(void)
 695 {
 696         int i, bank;
 697
 698         for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
 699                 bank = gpio_bank(i);
 700
 701                 gpio_bank_saved[bank].fer = gpio_array[bank]->port_fer;
 702                 gpio_bank_saved[bank].mux = gpio_array[bank]->port_mux;
 703                 gpio_bank_saved[bank].data = gpio_array[bank]->data;
 704                 gpio_bank_saved[bank].inen = gpio_array[bank]->inen;
 705                 gpio_bank_saved[bank].dir = gpio_array[bank]->dir_set;
 706         }
 707 }
 708
 709 void bfin_gpio_pm_hibernate_restore(void)
 710 {
 711         int i, bank;
 712
 713         for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
 714                 bank = gpio_bank(i);
 715
 716                 gpio_array[bank]->port_mux = gpio_bank_saved[bank].mux;
 717                 gpio_array[bank]->port_fer = gpio_bank_saved[bank].fer;
 718                 gpio_array[bank]->inen = gpio_bank_saved[bank].inen;
 719                 gpio_array[bank]->dir_set = gpio_bank_saved[bank].dir;
 720                 gpio_array[bank]->data_set = gpio_bank_saved[bank].data
 721                                                 | gpio_bank_saved[bank].dir;
 722         }
 723 }
 724 #endif
 725
 726 unsigned short get_gpio_dir(unsigned gpio)
 727 {
 728         return (0x01 & (gpio_array[gpio_bank(gpio)]->dir_clear >> gpio_sub_n(gpio)));
 729 }
 730 EXPORT_SYMBOL(get_gpio_dir);
 731
 732 #endif /* CONFIG_BF54x */
 733
 734 /***********************************************************
 735 *
 736 * FUNCTIONS:    Blackfin Peripheral Resource Allocation
 737 *               and PortMux Setup
 738 *
 739 * INPUTS/OUTPUTS:
 740 * per   Peripheral Identifier
 741 * label String
 742 *
 743 * DESCRIPTION: Blackfin Peripheral Resource Allocation and Setup API
 744 *
 745 * CAUTION:
 746 *************************************************************
 747 * MODIFICATION HISTORY :
 748 **************************************************************/
 749
 750 int peripheral_request(unsigned short per, const char *label)
 751 {
 752         unsigned long flags;
 753         unsigned short ident = P_IDENT(per);
 754
 755         /*
 756          * Don't cares are pins with only one dedicated function
 757          */
 758
 759         if (per & P_DONTCARE)
 760                 return 0;
 761
 762         if (!(per & P_DEFINED))
 763                 return -ENODEV;
 764
 765         local_irq_save_hw(flags);
 766
 767         /* If a pin can be muxed as either GPIO or peripheral, make
 768          * sure it is not already a GPIO pin when we request it.
 769          */
 770         if (unlikely(!check_gpio(ident) &&
 771             reserved_gpio_map[gpio_bank(ident)] & gpio_bit(ident))) {
 772                 if (system_state == SYSTEM_BOOTING)
 773                         dump_stack();
 774                 printk(KERN_ERR
 775                        "%s: Peripheral %d is already reserved as GPIO by %s !\n",
 776                        __func__, ident, get_label(ident));
 777                 local_irq_restore_hw(flags);
 778                 return -EBUSY;
 779         }
 780
 781         if (unlikely(reserved_peri_map[gpio_bank(ident)] & gpio_bit(ident))) {
 782
 783                 /*
 784                  * Pin functions like AMC address strobes my
 785                  * be requested and used by several drivers
 786                  */
 787
 788 #ifdef CONFIG_BF54x
 789                 if (!((per & P_MAYSHARE) && get_portmux(per) == P_FUNCT2MUX(per))) {
 790 #else
 791                 if (!(per & P_MAYSHARE)) {
 792 #endif
 793                         /*
 794                          * Allow that the identical pin function can
 795                          * be requested from the same driver twice
 796                          */
 797
 798                         if (cmp_label(ident, label) == 0)
 799                                 goto anyway;
 800
 801                         if (system_state == SYSTEM_BOOTING)
 802                                 dump_stack();
 803                         printk(KERN_ERR
 804                                "%s: Peripheral %d function %d is already reserved by %s !\n",
 805                                __func__, ident, P_FUNCT2MUX(per), get_label(ident));
 806                         local_irq_restore_hw(flags);
 807                         return -EBUSY;
 808                 }
 809         }
 810
 811  anyway:
 812         reserved_peri_map[gpio_bank(ident)] |= gpio_bit(ident);
 813
 814         portmux_setup(per);
 815         port_setup(ident, PERIPHERAL_USAGE);
 816
 817         local_irq_restore_hw(flags);
 818         set_label(ident, label);
 819
 820         return 0;
 821 }
 822 EXPORT_SYMBOL(peripheral_request);
 823
 824 int peripheral_request_list(const unsigned short per[], const char *label)
 825 {
 826         u16 cnt;
 827         int ret;
 828
 829         for (cnt = 0; per[cnt] != 0; cnt++) {
 830
 831                 ret = peripheral_request(per[cnt], label);
 832
 833                 if (ret < 0) {
 834                         for ( ; cnt > 0; cnt--)
 835                                 peripheral_free(per[cnt - 1]);
 836
 837                         return ret;
 838                 }
 839         }
 840
 841         return 0;
 842 }
 843 EXPORT_SYMBOL(peripheral_request_list);
 844
 845 void peripheral_free(unsigned short per)
 846 {
 847         unsigned long flags;
 848         unsigned short ident = P_IDENT(per);
 849
 850         if (per & P_DONTCARE)
 851                 return;
 852
 853         if (!(per & P_DEFINED))
 854                 return;
 855
 856         local_irq_save_hw(flags);
 857
 858         if (unlikely(!(reserved_peri_map[gpio_bank(ident)] & gpio_bit(ident)))) {
 859                 local_irq_restore_hw(flags);
 860                 return;
 861         }
 862
 863         if (!(per & P_MAYSHARE))
 864                 port_setup(ident, GPIO_USAGE);
 865
 866         reserved_peri_map[gpio_bank(ident)] &= ~gpio_bit(ident);
 867
 868         set_label(ident, "free");
 869
 870         local_irq_restore_hw(flags);
 871 }
 872 EXPORT_SYMBOL(peripheral_free);
 873
 874 void peripheral_free_list(const unsigned short per[])
 875 {
 876         u16 cnt;
 877         for (cnt = 0; per[cnt] != 0; cnt++)
 878                 peripheral_free(per[cnt]);
 879 }
 880 EXPORT_SYMBOL(peripheral_free_list);
 881
 882 /***********************************************************
 883 *
 884 * FUNCTIONS: Blackfin GPIO Driver
 885 *
 886 * INPUTS/OUTPUTS:
 887 * gpio  PIO Number between 0 and MAX_BLACKFIN_GPIOS
 888 * label String
 889 *
 890 * DESCRIPTION: Blackfin GPIO Driver API
 891 *
 892 * CAUTION:
 893 *************************************************************
 894 * MODIFICATION HISTORY :
 895 **************************************************************/
 896
 897 int bfin_gpio_request(unsigned gpio, const char *label)
 898 {
 899         unsigned long flags;
 900
 901         if (check_gpio(gpio) < 0)
 902                 return -EINVAL;
 903
 904         local_irq_save_hw(flags);
 905
 906         /*
 907          * Allow that the identical GPIO can
 908          * be requested from the same driver twice
 909          * Do nothing and return -
 910          */
 911
 912         if (cmp_label(gpio, label) == 0) {
 913                 local_irq_restore_hw(flags);
 914                 return 0;
 915         }
 916
 917         if (unlikely(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
 918                 if (system_state == SYSTEM_BOOTING)
 919                         dump_stack();
 920                 printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved by %s !\n",
 921                        gpio, get_label(gpio));
 922                 local_irq_restore_hw(flags);
 923                 return -EBUSY;
 924         }
 925         if (unlikely(reserved_peri_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
 926                 if (system_state == SYSTEM_BOOTING)
 927                         dump_stack();
 928                 printk(KERN_ERR
 929                        "bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
 930                        gpio, get_label(gpio));
 931                 local_irq_restore_hw(flags);
 932                 return -EBUSY;
 933         }
 934         if (unlikely(reserved_gpio_irq_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
 935                 printk(KERN_NOTICE "bfin-gpio: GPIO %d is already reserved as gpio-irq!"
 936                        " (Documentation/blackfin/bfin-gpio-notes.txt)\n", gpio);
 937         }
 938 #ifndef CONFIG_BF54x
 939         else {  /* Reset POLAR setting when acquiring a gpio for the first time */
 940                 set_gpio_polar(gpio, 0);
 941         }
 942 #endif
 943
 944         reserved_gpio_map[gpio_bank(gpio)] |= gpio_bit(gpio);
 945         set_label(gpio, label);
 946
 947         local_irq_restore_hw(flags);
 948
 949         port_setup(gpio, GPIO_USAGE);
 950
 951         return 0;
 952 }
 953 EXPORT_SYMBOL(bfin_gpio_request);
 954
 955 void bfin_gpio_free(unsigned gpio)
 956 {
 957         unsigned long flags;
 958
 959         if (check_gpio(gpio) < 0)
 960                 return;
 961
 962         might_sleep();
 963
 964         local_irq_save_hw(flags);
 965
 966         if (unlikely(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)))) {
 967                 if (system_state == SYSTEM_BOOTING)
 968                         dump_stack();
 969                 gpio_error(gpio);
 970                 local_irq_restore_hw(flags);
 971                 return;
 972         }
 973
 974         reserved_gpio_map[gpio_bank(gpio)] &= ~gpio_bit(gpio);
 975
 976         set_label(gpio, "free");
 977
 978         local_irq_restore_hw(flags);
 979 }
 980 EXPORT_SYMBOL(bfin_gpio_free);
 981
 982 int bfin_gpio_irq_request(unsigned gpio, const char *label)
 983 {
 984         unsigned long flags;
 985
 986         if (check_gpio(gpio) < 0)
 987                 return -EINVAL;
 988
 989         local_irq_save_hw(flags);
 990
 991         if (unlikely(reserved_peri_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
 992                 if (system_state == SYSTEM_BOOTING)
 993                         dump_stack();
 994                 printk(KERN_ERR
 995                        "bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
 996                        gpio, get_label(gpio));
 997                 local_irq_restore_hw(flags);
 998                 return -EBUSY;
 999         }
1000         if (unlikely(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)))
1001                 printk(KERN_NOTICE "bfin-gpio: GPIO %d is already reserved by %s! "
1002                        "(Documentation/blackfin/bfin-gpio-notes.txt)\n",
1003                        gpio, get_label(gpio));
1004
1005         reserved_gpio_irq_map[gpio_bank(gpio)] |= gpio_bit(gpio);
1006         set_label(gpio, label);
1007
1008         local_irq_restore_hw(flags);
1009
1010         port_setup(gpio, GPIO_USAGE);
1011
1012         return 0;
1013 }
1014
1015 void bfin_gpio_irq_free(unsigned gpio)
1016 {
1017         unsigned long flags;
1018
1019         if (check_gpio(gpio) < 0)
1020                 return;
1021
1022         local_irq_save_hw(flags);
1023
1024         if (unlikely(!(reserved_gpio_irq_map[gpio_bank(gpio)] & gpio_bit(gpio)))) {
1025                 if (system_state == SYSTEM_BOOTING)
1026                         dump_stack();
1027                 gpio_error(gpio);
1028                 local_irq_restore_hw(flags);
1029                 return;
1030         }
1031
1032         reserved_gpio_irq_map[gpio_bank(gpio)] &= ~gpio_bit(gpio);
1033
1034         set_label(gpio, "free");
1035
1036         local_irq_restore_hw(flags);
1037 }
1038
1039 static inline void __bfin_gpio_direction_input(unsigned gpio)
1040 {
1041 #ifdef CONFIG_BF54x
1042         gpio_array[gpio_bank(gpio)]->dir_clear = gpio_bit(gpio);
1043 #else
1044         gpio_array[gpio_bank(gpio)]->dir &= ~gpio_bit(gpio);
1045 #endif
1046         gpio_array[gpio_bank(gpio)]->inen |= gpio_bit(gpio);
1047 }
1048
1049 int bfin_gpio_direction_input(unsigned gpio)
1050 {
1051         unsigned long flags;
1052
1053         if (!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
1054                 gpio_error(gpio);
1055                 return -EINVAL;
1056         }
1057
1058         local_irq_save_hw(flags);
1059         __bfin_gpio_direction_input(gpio);
1060         AWA_DUMMY_READ(inen);
1061         local_irq_restore_hw(flags);
1062
1063         return 0;
1064 }
1065 EXPORT_SYMBOL(bfin_gpio_direction_input);
1066
1067 void bfin_gpio_irq_prepare(unsigned gpio)
1068 {
1069 #ifdef CONFIG_BF54x
1070         unsigned long flags;
1071 #endif
1072
1073         port_setup(gpio, GPIO_USAGE);
1074
1075 #ifdef CONFIG_BF54x
1076         local_irq_save_hw(flags);
1077         __bfin_gpio_direction_input(gpio);
1078         local_irq_restore_hw(flags);
1079 #endif
1080 }
1081
1082 void bfin_gpio_set_value(unsigned gpio, int arg)
1083 {
1084         if (arg)
1085                 gpio_array[gpio_bank(gpio)]->data_set = gpio_bit(gpio);
1086         else
1087                 gpio_array[gpio_bank(gpio)]->data_clear = gpio_bit(gpio);
1088 }
1089 EXPORT_SYMBOL(bfin_gpio_set_value);
1090
1091 int bfin_gpio_direction_output(unsigned gpio, int value)
1092 {
1093         unsigned long flags;
1094
1095         if (!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
1096                 gpio_error(gpio);
1097                 return -EINVAL;
1098         }
1099
1100         local_irq_save_hw(flags);
1101
1102         gpio_array[gpio_bank(gpio)]->inen &= ~gpio_bit(gpio);
1103         gpio_set_value(gpio, value);
1104 #ifdef CONFIG_BF54x
1105         gpio_array[gpio_bank(gpio)]->dir_set = gpio_bit(gpio);
1106 #else
1107         gpio_array[gpio_bank(gpio)]->dir |= gpio_bit(gpio);
1108 #endif
1109
1110         AWA_DUMMY_READ(dir);
1111         local_irq_restore_hw(flags);
1112
1113         return 0;
1114 }
1115 EXPORT_SYMBOL(bfin_gpio_direction_output);
1116
1117 int bfin_gpio_get_value(unsigned gpio)
1118 {
1119 #ifdef CONFIG_BF54x
1120         return (1 & (gpio_array[gpio_bank(gpio)]->data >> gpio_sub_n(gpio)));
1121 #else
1122         unsigned long flags;
1123
1124         if (unlikely(get_gpio_edge(gpio))) {
1125                 int ret;
1126                 local_irq_save_hw(flags);
1127                 set_gpio_edge(gpio, 0);
1128                 ret = get_gpio_data(gpio);
1129                 set_gpio_edge(gpio, 1);
1130                 local_irq_restore_hw(flags);
1131                 return ret;
1132         } else
1133                 return get_gpio_data(gpio);
1134 #endif
1135 }
1136 EXPORT_SYMBOL(bfin_gpio_get_value);
1137
1138 /* If we are booting from SPI and our board lacks a strong enough pull up,
1139  * the core can reset and execute the bootrom faster than the resistor can
1140  * pull the signal logically high.  To work around this (common) error in
1141  * board design, we explicitly set the pin back to GPIO mode, force /CS
1142  * high, and wait for the electrons to do their thing.
1143  *
1144  * This function only makes sense to be called from reset code, but it
1145  * lives here as we need to force all the GPIO states w/out going through
1146  * BUG() checks and such.
1147  */
1148 void bfin_reset_boot_spi_cs(unsigned short pin)
1149 {
1150         unsigned short gpio = P_IDENT(pin);
1151         port_setup(gpio, GPIO_USAGE);
1152         gpio_array[gpio_bank(gpio)]->data_set = gpio_bit(gpio);
1153         AWA_DUMMY_READ(data_set);
1154         udelay(1);
1155 }
1156
1157 #if defined(CONFIG_PROC_FS)
1158 static int gpio_proc_read(char *buf, char **start, off_t offset,
1159                           int len, int *unused_i, void *unused_v)
1160 {
1161         int c, irq, gpio, outlen = 0;
1162
1163         for (c = 0; c < MAX_RESOURCES; c++) {
1164                 irq = reserved_gpio_irq_map[gpio_bank(c)] & gpio_bit(c);
1165                 gpio = reserved_gpio_map[gpio_bank(c)] & gpio_bit(c);
1166                 if (!check_gpio(c) && (gpio || irq))
1167                         len = sprintf(buf, "GPIO_%d: \t%s%s \t\tGPIO %s\n", c,
1168                                  get_label(c), (gpio && irq) ? " *" : "",
1169                                  get_gpio_dir(c) ? "OUTPUT" : "INPUT");
1170                 else if (reserved_peri_map[gpio_bank(c)] & gpio_bit(c))
1171                         len = sprintf(buf, "GPIO_%d: \t%s \t\tPeripheral\n", c, get_label(c));
1172                 else
1173                         continue;
1174                 buf += len;
1175                 outlen += len;
1176         }
1177         return outlen;
1178 }
1179
1180 static __init int gpio_register_proc(void)
1181 {
1182         struct proc_dir_entry *proc_gpio;
1183
1184         proc_gpio = create_proc_entry("gpio", S_IRUGO, NULL);
1185         if (proc_gpio)
1186                 proc_gpio->read_proc = gpio_proc_read;
1187         return proc_gpio != NULL;
1188 }
1189 __initcall(gpio_register_proc);
1190 #endif
1191
1192 #ifdef CONFIG_GPIOLIB
1193 int bfin_gpiolib_direction_input(struct gpio_chip *chip, unsigned gpio)
1194 {
1195         return bfin_gpio_direction_input(gpio);
1196 }
1197
1198 int bfin_gpiolib_direction_output(struct gpio_chip *chip, unsigned gpio, int level)
1199 {
1200         return bfin_gpio_direction_output(gpio, level);
1201 }
1202
1203 int bfin_gpiolib_get_value(struct gpio_chip *chip, unsigned gpio)
1204 {
1205         return bfin_gpio_get_value(gpio);
1206 }
1207
1208 void bfin_gpiolib_set_value(struct gpio_chip *chip, unsigned gpio, int value)
1209 {
1210         return bfin_gpio_set_value(gpio, value);
1211 }
1212
1213 int bfin_gpiolib_gpio_request(struct gpio_chip *chip, unsigned gpio)
1214 {
1215         return bfin_gpio_request(gpio, chip->label);
1216 }
1217
1218 void bfin_gpiolib_gpio_free(struct gpio_chip *chip, unsigned gpio)
1219 {
1220         return bfin_gpio_free(gpio);
1221 }
1222
1223 static struct gpio_chip bfin_chip = {
1224         .label                  = "Blackfin-GPIOlib",
1225         .direction_input        = bfin_gpiolib_direction_input,
1226         .get                    = bfin_gpiolib_get_value,
1227         .direction_output       = bfin_gpiolib_direction_output,
1228         .set                    = bfin_gpiolib_set_value,
1229         .request                = bfin_gpiolib_gpio_request,
1230         .free                   = bfin_gpiolib_gpio_free,
1231         .base                   = 0,
1232         .ngpio                  = MAX_BLACKFIN_GPIOS,
1233 };
1234
1235 static int __init bfin_gpiolib_setup(void)
1236 {
1237         return gpiochip_add(&bfin_chip);
1238 }
1239 arch_initcall(bfin_gpiolib_setup);
1240 #endif