1 /* 2 * linux/arch/arm/common/locomo.c 3 * 4 * Sharp LoCoMo support 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 * 10 * This file contains all generic LoCoMo support. 11 * 12 * All initialization functions provided here are intended to be called 13 * from machine specific code with proper arguments when required. 14 * 15 * Based on sa1111.c 16 */ 17 18 #include <linux/config.h> 19 #include <linux/module.h> 20 #include <linux/init.h> 21 #include <linux/kernel.h> 22 #include <linux/delay.h> 23 #include <linux/errno.h> 24 #include <linux/ioport.h> 25 #include <linux/platform_device.h> 26 #include <linux/slab.h> 27 #include <linux/spinlock.h> 28 29 #include <asm/hardware.h> 30 #include <asm/io.h> 31 #include <asm/irq.h> 32 #include <asm/mach/irq.h> 33 34 #include <asm/hardware/locomo.h> 35 36 /* M62332 output channel selection */ 37 #define M62332_EVR_CH 1 /* M62332 volume channel number */ 38 /* 0 : CH.1 , 1 : CH. 2 */ 39 /* DAC send data */ 40 #define M62332_SLAVE_ADDR 0x4e /* Slave address */ 41 #define M62332_W_BIT 0x00 /* W bit (0 only) */ 42 #define M62332_SUB_ADDR 0x00 /* Sub address */ 43 #define M62332_A_BIT 0x00 /* A bit (0 only) */ 44 45 /* DAC setup and hold times (expressed in us) */ 46 #define DAC_BUS_FREE_TIME 5 /* 4.7 us */ 47 #define DAC_START_SETUP_TIME 5 /* 4.7 us */ 48 #define DAC_STOP_SETUP_TIME 4 /* 4.0 us */ 49 #define DAC_START_HOLD_TIME 5 /* 4.7 us */ 50 #define DAC_SCL_LOW_HOLD_TIME 5 /* 4.7 us */ 51 #define DAC_SCL_HIGH_HOLD_TIME 4 /* 4.0 us */ 52 #define DAC_DATA_SETUP_TIME 1 /* 250 ns */ 53 #define DAC_DATA_HOLD_TIME 1 /* 300 ns */ 54 #define DAC_LOW_SETUP_TIME 1 /* 300 ns */ 55 #define DAC_HIGH_SETUP_TIME 1 /* 1000 ns */ 56 57 /* the following is the overall data for the locomo chip */ 58 struct locomo { 59 struct device *dev; 60 unsigned long phys; 61 unsigned int irq; 62 spinlock_t lock; 63 void *base; 64 }; 65 66 struct locomo_dev_info { 67 unsigned long offset; 68 unsigned long length; 69 unsigned int devid; 70 unsigned int irq[1]; 71 const char * name; 72 }; 73 74 /* All the locomo devices. If offset is non-zero, the mapbase for the 75 * locomo_dev will be set to the chip base plus offset. If offset is 76 * zero, then the mapbase for the locomo_dev will be set to zero. An 77 * offset of zero means the device only uses GPIOs or other helper 78 * functions inside this file */ 79 static struct locomo_dev_info locomo_devices[] = { 80 { 81 .devid = LOCOMO_DEVID_KEYBOARD, 82 .irq = { 83 IRQ_LOCOMO_KEY, 84 }, 85 .name = "locomo-keyboard", 86 .offset = LOCOMO_KEYBOARD, 87 .length = 16, 88 }, 89 { 90 .devid = LOCOMO_DEVID_FRONTLIGHT, 91 .irq = {}, 92 .name = "locomo-frontlight", 93 .offset = LOCOMO_FRONTLIGHT, 94 .length = 8, 95 96 }, 97 { 98 .devid = LOCOMO_DEVID_BACKLIGHT, 99 .irq = {}, 100 .name = "locomo-backlight", 101 .offset = LOCOMO_BACKLIGHT, 102 .length = 8, 103 }, 104 { 105 .devid = LOCOMO_DEVID_AUDIO, 106 .irq = {}, 107 .name = "locomo-audio", 108 .offset = LOCOMO_AUDIO, 109 .length = 4, 110 }, 111 { 112 .devid = LOCOMO_DEVID_LED, 113 .irq = {}, 114 .name = "locomo-led", 115 .offset = LOCOMO_LED, 116 .length = 8, 117 }, 118 { 119 .devid = LOCOMO_DEVID_UART, 120 .irq = {}, 121 .name = "locomo-uart", 122 .offset = 0, 123 .length = 0, 124 }, 125 }; 126 127 128 /** LoCoMo interrupt handling stuff. 129 * NOTE: LoCoMo has a 1 to many mapping on all of its IRQs. 130 * that is, there is only one real hardware interrupt 131 * we determine which interrupt it is by reading some IO memory. 132 * We have two levels of expansion, first in the handler for the 133 * hardware interrupt we generate an interrupt 134 * IRQ_LOCOMO_*_BASE and those handlers generate more interrupts 135 * 136 * hardware irq reads LOCOMO_ICR & 0x0f00 137 * IRQ_LOCOMO_KEY_BASE 138 * IRQ_LOCOMO_GPIO_BASE 139 * IRQ_LOCOMO_LT_BASE 140 * IRQ_LOCOMO_SPI_BASE 141 * IRQ_LOCOMO_KEY_BASE reads LOCOMO_KIC & 0x0001 142 * IRQ_LOCOMO_KEY 143 * IRQ_LOCOMO_GPIO_BASE reads LOCOMO_GIR & LOCOMO_GPD & 0xffff 144 * IRQ_LOCOMO_GPIO[0-15] 145 * IRQ_LOCOMO_LT_BASE reads LOCOMO_LTINT & 0x0001 146 * IRQ_LOCOMO_LT 147 * IRQ_LOCOMO_SPI_BASE reads LOCOMO_SPIIR & 0x000F 148 * IRQ_LOCOMO_SPI_RFR 149 * IRQ_LOCOMO_SPI_RFW 150 * IRQ_LOCOMO_SPI_OVRN 151 * IRQ_LOCOMO_SPI_TEND 152 */ 153 154 #define LOCOMO_IRQ_START (IRQ_LOCOMO_KEY_BASE) 155 #define LOCOMO_IRQ_KEY_START (IRQ_LOCOMO_KEY) 156 #define LOCOMO_IRQ_GPIO_START (IRQ_LOCOMO_GPIO0) 157 #define LOCOMO_IRQ_LT_START (IRQ_LOCOMO_LT) 158 #define LOCOMO_IRQ_SPI_START (IRQ_LOCOMO_SPI_RFR) 159 160 static void locomo_handler(unsigned int irq, struct irqdesc *desc, 161 struct pt_regs *regs) 162 { 163 int req, i; 164 struct irqdesc *d; 165 void *mapbase = get_irq_chipdata(irq); 166 167 /* Acknowledge the parent IRQ */ 168 desc->chip->ack(irq); 169 170 /* check why this interrupt was generated */ 171 req = locomo_readl(mapbase + LOCOMO_ICR) & 0x0f00; 172 173 if (req) { 174 /* generate the next interrupt(s) */ 175 irq = LOCOMO_IRQ_START; 176 d = irq_desc + irq; 177 for (i = 0; i <= 3; i++, d++, irq++) { 178 if (req & (0x0100 << i)) { 179 desc_handle_irq(irq, d, regs); 180 } 181 182 } 183 } 184 } 185 186 static void locomo_ack_irq(unsigned int irq) 187 { 188 } 189 190 static void locomo_mask_irq(unsigned int irq) 191 { 192 void *mapbase = get_irq_chipdata(irq); 193 unsigned int r; 194 r = locomo_readl(mapbase + LOCOMO_ICR); 195 r &= ~(0x0010 << (irq - LOCOMO_IRQ_START)); 196 locomo_writel(r, mapbase + LOCOMO_ICR); 197 } 198 199 static void locomo_unmask_irq(unsigned int irq) 200 { 201 void *mapbase = get_irq_chipdata(irq); 202 unsigned int r; 203 r = locomo_readl(mapbase + LOCOMO_ICR); 204 r |= (0x0010 << (irq - LOCOMO_IRQ_START)); 205 locomo_writel(r, mapbase + LOCOMO_ICR); 206 } 207 208 static struct irqchip locomo_chip = { 209 .ack = locomo_ack_irq, 210 .mask = locomo_mask_irq, 211 .unmask = locomo_unmask_irq, 212 }; 213 214 static void locomo_key_handler(unsigned int irq, struct irqdesc *desc, 215 struct pt_regs *regs) 216 { 217 struct irqdesc *d; 218 void *mapbase = get_irq_chipdata(irq); 219 220 if (locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC) & 0x0001) { 221 d = irq_desc + LOCOMO_IRQ_KEY_START; 222 desc_handle_irq(LOCOMO_IRQ_KEY_START, d, regs); 223 } 224 } 225 226 static void locomo_key_ack_irq(unsigned int irq) 227 { 228 void *mapbase = get_irq_chipdata(irq); 229 unsigned int r; 230 r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); 231 r &= ~(0x0100 << (irq - LOCOMO_IRQ_KEY_START)); 232 locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); 233 } 234 235 static void locomo_key_mask_irq(unsigned int irq) 236 { 237 void *mapbase = get_irq_chipdata(irq); 238 unsigned int r; 239 r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); 240 r &= ~(0x0010 << (irq - LOCOMO_IRQ_KEY_START)); 241 locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); 242 } 243 244 static void locomo_key_unmask_irq(unsigned int irq) 245 { 246 void *mapbase = get_irq_chipdata(irq); 247 unsigned int r; 248 r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); 249 r |= (0x0010 << (irq - LOCOMO_IRQ_KEY_START)); 250 locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); 251 } 252 253 static struct irqchip locomo_key_chip = { 254 .ack = locomo_key_ack_irq, 255 .mask = locomo_key_mask_irq, 256 .unmask = locomo_key_unmask_irq, 257 }; 258 259 static void locomo_gpio_handler(unsigned int irq, struct irqdesc *desc, 260 struct pt_regs *regs) 261 { 262 int req, i; 263 struct irqdesc *d; 264 void *mapbase = get_irq_chipdata(irq); 265 266 req = locomo_readl(mapbase + LOCOMO_GIR) & 267 locomo_readl(mapbase + LOCOMO_GPD) & 268 0xffff; 269 270 if (req) { 271 irq = LOCOMO_IRQ_GPIO_START; 272 d = irq_desc + LOCOMO_IRQ_GPIO_START; 273 for (i = 0; i <= 15; i++, irq++, d++) { 274 if (req & (0x0001 << i)) { 275 desc_handle_irq(irq, d, regs); 276 } 277 } 278 } 279 } 280 281 static void locomo_gpio_ack_irq(unsigned int irq) 282 { 283 void *mapbase = get_irq_chipdata(irq); 284 unsigned int r; 285 r = locomo_readl(mapbase + LOCOMO_GWE); 286 r |= (0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); 287 locomo_writel(r, mapbase + LOCOMO_GWE); 288 289 r = locomo_readl(mapbase + LOCOMO_GIS); 290 r &= ~(0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); 291 locomo_writel(r, mapbase + LOCOMO_GIS); 292 293 r = locomo_readl(mapbase + LOCOMO_GWE); 294 r &= ~(0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); 295 locomo_writel(r, mapbase + LOCOMO_GWE); 296 } 297 298 static void locomo_gpio_mask_irq(unsigned int irq) 299 { 300 void *mapbase = get_irq_chipdata(irq); 301 unsigned int r; 302 r = locomo_readl(mapbase + LOCOMO_GIE); 303 r &= ~(0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); 304 locomo_writel(r, mapbase + LOCOMO_GIE); 305 } 306 307 static void locomo_gpio_unmask_irq(unsigned int irq) 308 { 309 void *mapbase = get_irq_chipdata(irq); 310 unsigned int r; 311 r = locomo_readl(mapbase + LOCOMO_GIE); 312 r |= (0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); 313 locomo_writel(r, mapbase + LOCOMO_GIE); 314 } 315 316 static struct irqchip locomo_gpio_chip = { 317 .ack = locomo_gpio_ack_irq, 318 .mask = locomo_gpio_mask_irq, 319 .unmask = locomo_gpio_unmask_irq, 320 }; 321 322 static void locomo_lt_handler(unsigned int irq, struct irqdesc *desc, 323 struct pt_regs *regs) 324 { 325 struct irqdesc *d; 326 void *mapbase = get_irq_chipdata(irq); 327 328 if (locomo_readl(mapbase + LOCOMO_LTINT) & 0x0001) { 329 d = irq_desc + LOCOMO_IRQ_LT_START; 330 desc_handle_irq(LOCOMO_IRQ_LT_START, d, regs); 331 } 332 } 333 334 static void locomo_lt_ack_irq(unsigned int irq) 335 { 336 void *mapbase = get_irq_chipdata(irq); 337 unsigned int r; 338 r = locomo_readl(mapbase + LOCOMO_LTINT); 339 r &= ~(0x0100 << (irq - LOCOMO_IRQ_LT_START)); 340 locomo_writel(r, mapbase + LOCOMO_LTINT); 341 } 342 343 static void locomo_lt_mask_irq(unsigned int irq) 344 { 345 void *mapbase = get_irq_chipdata(irq); 346 unsigned int r; 347 r = locomo_readl(mapbase + LOCOMO_LTINT); 348 r &= ~(0x0010 << (irq - LOCOMO_IRQ_LT_START)); 349 locomo_writel(r, mapbase + LOCOMO_LTINT); 350 } 351 352 static void locomo_lt_unmask_irq(unsigned int irq) 353 { 354 void *mapbase = get_irq_chipdata(irq); 355 unsigned int r; 356 r = locomo_readl(mapbase + LOCOMO_LTINT); 357 r |= (0x0010 << (irq - LOCOMO_IRQ_LT_START)); 358 locomo_writel(r, mapbase + LOCOMO_LTINT); 359 } 360 361 static struct irqchip locomo_lt_chip = { 362 .ack = locomo_lt_ack_irq, 363 .mask = locomo_lt_mask_irq, 364 .unmask = locomo_lt_unmask_irq, 365 }; 366 367 static void locomo_spi_handler(unsigned int irq, struct irqdesc *desc, 368 struct pt_regs *regs) 369 { 370 int req, i; 371 struct irqdesc *d; 372 void *mapbase = get_irq_chipdata(irq); 373 374 req = locomo_readl(mapbase + LOCOMO_SPIIR) & 0x000F; 375 if (req) { 376 irq = LOCOMO_IRQ_SPI_START; 377 d = irq_desc + irq; 378 379 for (i = 0; i <= 3; i++, irq++, d++) { 380 if (req & (0x0001 << i)) { 381 desc_handle_irq(irq, d, regs); 382 } 383 } 384 } 385 } 386 387 static void locomo_spi_ack_irq(unsigned int irq) 388 { 389 void *mapbase = get_irq_chipdata(irq); 390 unsigned int r; 391 r = locomo_readl(mapbase + LOCOMO_SPIWE); 392 r |= (0x0001 << (irq - LOCOMO_IRQ_SPI_START)); 393 locomo_writel(r, mapbase + LOCOMO_SPIWE); 394 395 r = locomo_readl(mapbase + LOCOMO_SPIIS); 396 r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START)); 397 locomo_writel(r, mapbase + LOCOMO_SPIIS); 398 399 r = locomo_readl(mapbase + LOCOMO_SPIWE); 400 r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START)); 401 locomo_writel(r, mapbase + LOCOMO_SPIWE); 402 } 403 404 static void locomo_spi_mask_irq(unsigned int irq) 405 { 406 void *mapbase = get_irq_chipdata(irq); 407 unsigned int r; 408 r = locomo_readl(mapbase + LOCOMO_SPIIE); 409 r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START)); 410 locomo_writel(r, mapbase + LOCOMO_SPIIE); 411 } 412 413 static void locomo_spi_unmask_irq(unsigned int irq) 414 { 415 void *mapbase = get_irq_chipdata(irq); 416 unsigned int r; 417 r = locomo_readl(mapbase + LOCOMO_SPIIE); 418 r |= (0x0001 << (irq - LOCOMO_IRQ_SPI_START)); 419 locomo_writel(r, mapbase + LOCOMO_SPIIE); 420 } 421 422 static struct irqchip locomo_spi_chip = { 423 .ack = locomo_spi_ack_irq, 424 .mask = locomo_spi_mask_irq, 425 .unmask = locomo_spi_unmask_irq, 426 }; 427 428 static void locomo_setup_irq(struct locomo *lchip) 429 { 430 int irq; 431 void *irqbase = lchip->base; 432 433 /* 434 * Install handler for IRQ_LOCOMO_HW. 435 */ 436 set_irq_type(lchip->irq, IRQT_FALLING); 437 set_irq_chipdata(lchip->irq, irqbase); 438 set_irq_chained_handler(lchip->irq, locomo_handler); 439 440 /* Install handlers for IRQ_LOCOMO_*_BASE */ 441 set_irq_chip(IRQ_LOCOMO_KEY_BASE, &locomo_chip); 442 set_irq_chipdata(IRQ_LOCOMO_KEY_BASE, irqbase); 443 set_irq_chained_handler(IRQ_LOCOMO_KEY_BASE, locomo_key_handler); 444 set_irq_flags(IRQ_LOCOMO_KEY_BASE, IRQF_VALID | IRQF_PROBE); 445 446 set_irq_chip(IRQ_LOCOMO_GPIO_BASE, &locomo_chip); 447 set_irq_chipdata(IRQ_LOCOMO_GPIO_BASE, irqbase); 448 set_irq_chained_handler(IRQ_LOCOMO_GPIO_BASE, locomo_gpio_handler); 449 set_irq_flags(IRQ_LOCOMO_GPIO_BASE, IRQF_VALID | IRQF_PROBE); 450 451 set_irq_chip(IRQ_LOCOMO_LT_BASE, &locomo_chip); 452 set_irq_chipdata(IRQ_LOCOMO_LT_BASE, irqbase); 453 set_irq_chained_handler(IRQ_LOCOMO_LT_BASE, locomo_lt_handler); 454 set_irq_flags(IRQ_LOCOMO_LT_BASE, IRQF_VALID | IRQF_PROBE); 455 456 set_irq_chip(IRQ_LOCOMO_SPI_BASE, &locomo_chip); 457 set_irq_chipdata(IRQ_LOCOMO_SPI_BASE, irqbase); 458 set_irq_chained_handler(IRQ_LOCOMO_SPI_BASE, locomo_spi_handler); 459 set_irq_flags(IRQ_LOCOMO_SPI_BASE, IRQF_VALID | IRQF_PROBE); 460 461 /* install handlers for IRQ_LOCOMO_KEY_BASE generated interrupts */ 462 set_irq_chip(LOCOMO_IRQ_KEY_START, &locomo_key_chip); 463 set_irq_chipdata(LOCOMO_IRQ_KEY_START, irqbase); 464 set_irq_handler(LOCOMO_IRQ_KEY_START, do_edge_IRQ); 465 set_irq_flags(LOCOMO_IRQ_KEY_START, IRQF_VALID | IRQF_PROBE); 466 467 /* install handlers for IRQ_LOCOMO_GPIO_BASE generated interrupts */ 468 for (irq = LOCOMO_IRQ_GPIO_START; irq < LOCOMO_IRQ_GPIO_START + 16; irq++) { 469 set_irq_chip(irq, &locomo_gpio_chip); 470 set_irq_chipdata(irq, irqbase); 471 set_irq_handler(irq, do_edge_IRQ); 472 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); 473 } 474 475 /* install handlers for IRQ_LOCOMO_LT_BASE generated interrupts */ 476 set_irq_chip(LOCOMO_IRQ_LT_START, &locomo_lt_chip); 477 set_irq_chipdata(LOCOMO_IRQ_LT_START, irqbase); 478 set_irq_handler(LOCOMO_IRQ_LT_START, do_edge_IRQ); 479 set_irq_flags(LOCOMO_IRQ_LT_START, IRQF_VALID | IRQF_PROBE); 480 481 /* install handlers for IRQ_LOCOMO_SPI_BASE generated interrupts */ 482 for (irq = LOCOMO_IRQ_SPI_START; irq < LOCOMO_IRQ_SPI_START + 3; irq++) { 483 set_irq_chip(irq, &locomo_spi_chip); 484 set_irq_chipdata(irq, irqbase); 485 set_irq_handler(irq, do_edge_IRQ); 486 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); 487 } 488 } 489 490 491 static void locomo_dev_release(struct device *_dev) 492 { 493 struct locomo_dev *dev = LOCOMO_DEV(_dev); 494 495 kfree(dev); 496 } 497 498 static int 499 locomo_init_one_child(struct locomo *lchip, struct locomo_dev_info *info) 500 { 501 struct locomo_dev *dev; 502 int ret; 503 504 dev = kmalloc(sizeof(struct locomo_dev), GFP_KERNEL); 505 if (!dev) { 506 ret = -ENOMEM; 507 goto out; 508 } 509 memset(dev, 0, sizeof(struct locomo_dev)); 510 511 strncpy(dev->dev.bus_id,info->name,sizeof(dev->dev.bus_id)); 512 /* 513 * If the parent device has a DMA mask associated with it, 514 * propagate it down to the children. 515 */ 516 if (lchip->dev->dma_mask) { 517 dev->dma_mask = *lchip->dev->dma_mask; 518 dev->dev.dma_mask = &dev->dma_mask; 519 } 520 521 dev->devid = info->devid; 522 dev->dev.parent = lchip->dev; 523 dev->dev.bus = &locomo_bus_type; 524 dev->dev.release = locomo_dev_release; 525 dev->dev.coherent_dma_mask = lchip->dev->coherent_dma_mask; 526 527 if (info->offset) 528 dev->mapbase = lchip->base + info->offset; 529 else 530 dev->mapbase = 0; 531 dev->length = info->length; 532 533 memmove(dev->irq, info->irq, sizeof(dev->irq)); 534 535 ret = device_register(&dev->dev); 536 if (ret) { 537 out: 538 kfree(dev); 539 } 540 return ret; 541 } 542 543 #ifdef CONFIG_PM 544 545 struct locomo_save_data { 546 u16 LCM_GPO; 547 u16 LCM_SPICT; 548 u16 LCM_GPE; 549 u16 LCM_ASD; 550 u16 LCM_SPIMD; 551 }; 552 553 static int locomo_suspend(struct device *dev, pm_message_t state) 554 { 555 struct locomo *lchip = dev_get_drvdata(dev); 556 struct locomo_save_data *save; 557 unsigned long flags; 558 559 save = kmalloc(sizeof(struct locomo_save_data), GFP_KERNEL); 560 if (!save) 561 return -ENOMEM; 562 563 dev->power.saved_state = (void *) save; 564 565 spin_lock_irqsave(&lchip->lock, flags); 566 567 save->LCM_GPO = locomo_readl(lchip->base + LOCOMO_GPO); /* GPIO */ 568 locomo_writel(0x00, lchip->base + LOCOMO_GPO); 569 save->LCM_SPICT = locomo_readl(lchip->base + LOCOMO_SPICT); /* SPI */ 570 locomo_writel(0x40, lchip->base + LOCOMO_SPICT); 571 save->LCM_GPE = locomo_readl(lchip->base + LOCOMO_GPE); /* GPIO */ 572 locomo_writel(0x00, lchip->base + LOCOMO_GPE); 573 save->LCM_ASD = locomo_readl(lchip->base + LOCOMO_ASD); /* ADSTART */ 574 locomo_writel(0x00, lchip->base + LOCOMO_ASD); 575 save->LCM_SPIMD = locomo_readl(lchip->base + LOCOMO_SPIMD); /* SPI */ 576 locomo_writel(0x3C14, lchip->base + LOCOMO_SPIMD); 577 578 locomo_writel(0x00, lchip->base + LOCOMO_PAIF); 579 locomo_writel(0x00, lchip->base + LOCOMO_DAC); 580 locomo_writel(0x00, lchip->base + LOCOMO_BACKLIGHT + LOCOMO_TC); 581 582 if ( (locomo_readl(lchip->base + LOCOMO_LED + LOCOMO_LPT0) & 0x88) && (locomo_readl(lchip->base + LOCOMO_LED + LOCOMO_LPT1) & 0x88) ) 583 locomo_writel(0x00, lchip->base + LOCOMO_C32K); /* CLK32 off */ 584 else 585 /* 18MHz already enabled, so no wait */ 586 locomo_writel(0xc1, lchip->base + LOCOMO_C32K); /* CLK32 on */ 587 588 locomo_writel(0x00, lchip->base + LOCOMO_TADC); /* 18MHz clock off*/ 589 locomo_writel(0x00, lchip->base + LOCOMO_AUDIO + LOCOMO_ACC); /* 22MHz/24MHz clock off */ 590 locomo_writel(0x00, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS); /* FL */ 591 592 spin_unlock_irqrestore(&lchip->lock, flags); 593 594 return 0; 595 } 596 597 static int locomo_resume(struct device *dev) 598 { 599 struct locomo *lchip = dev_get_drvdata(dev); 600 struct locomo_save_data *save; 601 unsigned long r; 602 unsigned long flags; 603 604 save = (struct locomo_save_data *) dev->power.saved_state; 605 if (!save) 606 return 0; 607 608 spin_lock_irqsave(&lchip->lock, flags); 609 610 locomo_writel(save->LCM_GPO, lchip->base + LOCOMO_GPO); 611 locomo_writel(save->LCM_SPICT, lchip->base + LOCOMO_SPICT); 612 locomo_writel(save->LCM_GPE, lchip->base + LOCOMO_GPE); 613 locomo_writel(save->LCM_ASD, lchip->base + LOCOMO_ASD); 614 locomo_writel(save->LCM_SPIMD, lchip->base + LOCOMO_SPIMD); 615 616 locomo_writel(0x00, lchip->base + LOCOMO_C32K); 617 locomo_writel(0x90, lchip->base + LOCOMO_TADC); 618 619 locomo_writel(0, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KSC); 620 r = locomo_readl(lchip->base + LOCOMO_KEYBOARD + LOCOMO_KIC); 621 r &= 0xFEFF; 622 locomo_writel(r, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KIC); 623 locomo_writel(0x1, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KCMD); 624 625 spin_unlock_irqrestore(&lchip->lock, flags); 626 627 dev->power.saved_state = NULL; 628 kfree(save); 629 630 return 0; 631 } 632 #endif 633 634 /** 635 * locomo_probe - probe for a single LoCoMo chip. 636 * @phys_addr: physical address of device. 637 * 638 * Probe for a LoCoMo chip. This must be called 639 * before any other locomo-specific code. 640 * 641 * Returns: 642 * %-ENODEV device not found. 643 * %-EBUSY physical address already marked in-use. 644 * %0 successful. 645 */ 646 static int 647 __locomo_probe(struct device *me, struct resource *mem, int irq) 648 { 649 struct locomo *lchip; 650 unsigned long r; 651 int i, ret = -ENODEV; 652 653 lchip = kmalloc(sizeof(struct locomo), GFP_KERNEL); 654 if (!lchip) 655 return -ENOMEM; 656 657 memset(lchip, 0, sizeof(struct locomo)); 658 659 spin_lock_init(&lchip->lock); 660 661 lchip->dev = me; 662 dev_set_drvdata(lchip->dev, lchip); 663 664 lchip->phys = mem->start; 665 lchip->irq = irq; 666 667 /* 668 * Map the whole region. This also maps the 669 * registers for our children. 670 */ 671 lchip->base = ioremap(mem->start, PAGE_SIZE); 672 if (!lchip->base) { 673 ret = -ENOMEM; 674 goto out; 675 } 676 677 /* locomo initialize */ 678 locomo_writel(0, lchip->base + LOCOMO_ICR); 679 /* KEYBOARD */ 680 locomo_writel(0, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KIC); 681 682 /* GPIO */ 683 locomo_writel(0, lchip->base + LOCOMO_GPO); 684 locomo_writel( (LOCOMO_GPIO(2) | LOCOMO_GPIO(3) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14)) 685 , lchip->base + LOCOMO_GPE); 686 locomo_writel( (LOCOMO_GPIO(2) | LOCOMO_GPIO(3) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14)) 687 , lchip->base + LOCOMO_GPD); 688 locomo_writel(0, lchip->base + LOCOMO_GIE); 689 690 /* FrontLight */ 691 locomo_writel(0, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS); 692 locomo_writel(0, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALD); 693 /* Longtime timer */ 694 locomo_writel(0, lchip->base + LOCOMO_LTINT); 695 /* SPI */ 696 locomo_writel(0, lchip->base + LOCOMO_SPIIE); 697 698 locomo_writel(6 + 8 + 320 + 30 - 10, lchip->base + LOCOMO_ASD); 699 r = locomo_readl(lchip->base + LOCOMO_ASD); 700 r |= 0x8000; 701 locomo_writel(r, lchip->base + LOCOMO_ASD); 702 703 locomo_writel(6 + 8 + 320 + 30 - 10 - 128 + 4, lchip->base + LOCOMO_HSD); 704 r = locomo_readl(lchip->base + LOCOMO_HSD); 705 r |= 0x8000; 706 locomo_writel(r, lchip->base + LOCOMO_HSD); 707 708 locomo_writel(128 / 8, lchip->base + LOCOMO_HSC); 709 710 /* XON */ 711 locomo_writel(0x80, lchip->base + LOCOMO_TADC); 712 udelay(1000); 713 /* CLK9MEN */ 714 r = locomo_readl(lchip->base + LOCOMO_TADC); 715 r |= 0x10; 716 locomo_writel(r, lchip->base + LOCOMO_TADC); 717 udelay(100); 718 719 /* init DAC */ 720 r = locomo_readl(lchip->base + LOCOMO_DAC); 721 r |= LOCOMO_DAC_SCLOEB | LOCOMO_DAC_SDAOEB; 722 locomo_writel(r, lchip->base + LOCOMO_DAC); 723 724 r = locomo_readl(lchip->base + LOCOMO_VER); 725 printk(KERN_INFO "LoCoMo Chip: %lu%lu\n", (r >> 8), (r & 0xff)); 726 727 /* 728 * The interrupt controller must be initialised before any 729 * other device to ensure that the interrupts are available. 730 */ 731 if (lchip->irq != NO_IRQ) 732 locomo_setup_irq(lchip); 733 734 for (i = 0; i < ARRAY_SIZE(locomo_devices); i++) 735 locomo_init_one_child(lchip, &locomo_devices[i]); 736 737 return 0; 738 739 out: 740 kfree(lchip); 741 return ret; 742 } 743 744 static int locomo_remove_child(struct device *dev, void *data) 745 { 746 device_unregister(dev); 747 return 0; 748 } 749 750 static void __locomo_remove(struct locomo *lchip) 751 { 752 device_for_each_child(lchip->dev, NULL, locomo_remove_child); 753 754 if (lchip->irq != NO_IRQ) { 755 set_irq_chained_handler(lchip->irq, NULL); 756 set_irq_data(lchip->irq, NULL); 757 } 758 759 iounmap(lchip->base); 760 kfree(lchip); 761 } 762 763 static int locomo_probe(struct device *dev) 764 { 765 struct platform_device *pdev = to_platform_device(dev); 766 struct resource *mem; 767 int irq; 768 769 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 770 if (!mem) 771 return -EINVAL; 772 irq = platform_get_irq(pdev, 0); 773 774 return __locomo_probe(dev, mem, irq); 775 } 776 777 static int locomo_remove(struct device *dev) 778 { 779 struct locomo *lchip = dev_get_drvdata(dev); 780 781 if (lchip) { 782 __locomo_remove(lchip); 783 dev_set_drvdata(dev, NULL); 784 } 785 786 return 0; 787 } 788 789 /* 790 * Not sure if this should be on the system bus or not yet. 791 * We really want some way to register a system device at 792 * the per-machine level, and then have this driver pick 793 * up the registered devices. 794 */ 795 static struct device_driver locomo_device_driver = { 796 .name = "locomo", 797 .bus = &platform_bus_type, 798 .probe = locomo_probe, 799 .remove = locomo_remove, 800 #ifdef CONFIG_PM 801 .suspend = locomo_suspend, 802 .resume = locomo_resume, 803 #endif 804 }; 805 806 /* 807 * Get the parent device driver (us) structure 808 * from a child function device 809 */ 810 static inline struct locomo *locomo_chip_driver(struct locomo_dev *ldev) 811 { 812 return (struct locomo *)dev_get_drvdata(ldev->dev.parent); 813 } 814 815 void locomo_gpio_set_dir(struct locomo_dev *ldev, unsigned int bits, unsigned int dir) 816 { 817 struct locomo *lchip = locomo_chip_driver(ldev); 818 unsigned long flags; 819 unsigned int r; 820 821 spin_lock_irqsave(&lchip->lock, flags); 822 823 r = locomo_readl(lchip->base + LOCOMO_GPD); 824 r &= ~bits; 825 locomo_writel(r, lchip->base + LOCOMO_GPD); 826 827 r = locomo_readl(lchip->base + LOCOMO_GPE); 828 if (dir) 829 r |= bits; 830 else 831 r &= ~bits; 832 locomo_writel(r, lchip->base + LOCOMO_GPE); 833 834 spin_unlock_irqrestore(&lchip->lock, flags); 835 } 836 837 unsigned int locomo_gpio_read_level(struct locomo_dev *ldev, unsigned int bits) 838 { 839 struct locomo *lchip = locomo_chip_driver(ldev); 840 unsigned long flags; 841 unsigned int ret; 842 843 spin_lock_irqsave(&lchip->lock, flags); 844 ret = locomo_readl(lchip->base + LOCOMO_GPL); 845 spin_unlock_irqrestore(&lchip->lock, flags); 846 847 ret &= bits; 848 return ret; 849 } 850 851 unsigned int locomo_gpio_read_output(struct locomo_dev *ldev, unsigned int bits) 852 { 853 struct locomo *lchip = locomo_chip_driver(ldev); 854 unsigned long flags; 855 unsigned int ret; 856 857 spin_lock_irqsave(&lchip->lock, flags); 858 ret = locomo_readl(lchip->base + LOCOMO_GPO); 859 spin_unlock_irqrestore(&lchip->lock, flags); 860 861 ret &= bits; 862 return ret; 863 } 864 865 void locomo_gpio_write(struct locomo_dev *ldev, unsigned int bits, unsigned int set) 866 { 867 struct locomo *lchip = locomo_chip_driver(ldev); 868 unsigned long flags; 869 unsigned int r; 870 871 spin_lock_irqsave(&lchip->lock, flags); 872 873 r = locomo_readl(lchip->base + LOCOMO_GPO); 874 if (set) 875 r |= bits; 876 else 877 r &= ~bits; 878 locomo_writel(r, lchip->base + LOCOMO_GPO); 879 880 spin_unlock_irqrestore(&lchip->lock, flags); 881 } 882 883 static void locomo_m62332_sendbit(void *mapbase, int bit) 884 { 885 unsigned int r; 886 887 r = locomo_readl(mapbase + LOCOMO_DAC); 888 r &= ~(LOCOMO_DAC_SCLOEB); 889 locomo_writel(r, mapbase + LOCOMO_DAC); 890 udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ 891 udelay(DAC_DATA_HOLD_TIME); /* 300 nsec */ 892 r = locomo_readl(mapbase + LOCOMO_DAC); 893 r &= ~(LOCOMO_DAC_SCLOEB); 894 locomo_writel(r, mapbase + LOCOMO_DAC); 895 udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ 896 udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ 897 898 if (bit & 1) { 899 r = locomo_readl(mapbase + LOCOMO_DAC); 900 r |= LOCOMO_DAC_SDAOEB; 901 locomo_writel(r, mapbase + LOCOMO_DAC); 902 udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ 903 } else { 904 r = locomo_readl(mapbase + LOCOMO_DAC); 905 r &= ~(LOCOMO_DAC_SDAOEB); 906 locomo_writel(r, mapbase + LOCOMO_DAC); 907 udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ 908 } 909 910 udelay(DAC_DATA_SETUP_TIME); /* 250 nsec */ 911 r = locomo_readl(mapbase + LOCOMO_DAC); 912 r |= LOCOMO_DAC_SCLOEB; 913 locomo_writel(r, mapbase + LOCOMO_DAC); 914 udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ 915 udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.0 usec */ 916 } 917 918 void locomo_m62332_senddata(struct locomo_dev *ldev, unsigned int dac_data, int channel) 919 { 920 struct locomo *lchip = locomo_chip_driver(ldev); 921 int i; 922 unsigned char data; 923 unsigned int r; 924 void *mapbase = lchip->base; 925 unsigned long flags; 926 927 spin_lock_irqsave(&lchip->lock, flags); 928 929 /* Start */ 930 udelay(DAC_BUS_FREE_TIME); /* 5.0 usec */ 931 r = locomo_readl(mapbase + LOCOMO_DAC); 932 r |= LOCOMO_DAC_SCLOEB | LOCOMO_DAC_SDAOEB; 933 locomo_writel(r, mapbase + LOCOMO_DAC); 934 udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ 935 udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.0 usec */ 936 r = locomo_readl(mapbase + LOCOMO_DAC); 937 r &= ~(LOCOMO_DAC_SDAOEB); 938 locomo_writel(r, mapbase + LOCOMO_DAC); 939 udelay(DAC_START_HOLD_TIME); /* 5.0 usec */ 940 udelay(DAC_DATA_HOLD_TIME); /* 300 nsec */ 941 942 /* Send slave address and W bit (LSB is W bit) */ 943 data = (M62332_SLAVE_ADDR << 1) | M62332_W_BIT; 944 for (i = 1; i <= 8; i++) { 945 locomo_m62332_sendbit(mapbase, data >> (8 - i)); 946 } 947 948 /* Check A bit */ 949 r = locomo_readl(mapbase + LOCOMO_DAC); 950 r &= ~(LOCOMO_DAC_SCLOEB); 951 locomo_writel(r, mapbase + LOCOMO_DAC); 952 udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ 953 udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ 954 r = locomo_readl(mapbase + LOCOMO_DAC); 955 r &= ~(LOCOMO_DAC_SDAOEB); 956 locomo_writel(r, mapbase + LOCOMO_DAC); 957 udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ 958 r = locomo_readl(mapbase + LOCOMO_DAC); 959 r |= LOCOMO_DAC_SCLOEB; 960 locomo_writel(r, mapbase + LOCOMO_DAC); 961 udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ 962 udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.7 usec */ 963 if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) { /* High is error */ 964 printk(KERN_WARNING "locomo: m62332_senddata Error 1\n"); 965 return; 966 } 967 968 /* Send Sub address (LSB is channel select) */ 969 /* channel = 0 : ch1 select */ 970 /* = 1 : ch2 select */ 971 data = M62332_SUB_ADDR + channel; 972 for (i = 1; i <= 8; i++) { 973 locomo_m62332_sendbit(mapbase, data >> (8 - i)); 974 } 975 976 /* Check A bit */ 977 r = locomo_readl(mapbase + LOCOMO_DAC); 978 r &= ~(LOCOMO_DAC_SCLOEB); 979 locomo_writel(r, mapbase + LOCOMO_DAC); 980 udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ 981 udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ 982 r = locomo_readl(mapbase + LOCOMO_DAC); 983 r &= ~(LOCOMO_DAC_SDAOEB); 984 locomo_writel(r, mapbase + LOCOMO_DAC); 985 udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ 986 r = locomo_readl(mapbase + LOCOMO_DAC); 987 r |= LOCOMO_DAC_SCLOEB; 988 locomo_writel(r, mapbase + LOCOMO_DAC); 989 udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ 990 udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.7 usec */ 991 if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) { /* High is error */ 992 printk(KERN_WARNING "locomo: m62332_senddata Error 2\n"); 993 return; 994 } 995 996 /* Send DAC data */ 997 for (i = 1; i <= 8; i++) { 998 locomo_m62332_sendbit(mapbase, dac_data >> (8 - i)); 999 } 1000 1001 /* Check A bit */ 1002 r = locomo_readl(mapbase + LOCOMO_DAC); 1003 r &= ~(LOCOMO_DAC_SCLOEB); 1004 locomo_writel(r, mapbase + LOCOMO_DAC); 1005 udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ 1006 udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ 1007 r = locomo_readl(mapbase + LOCOMO_DAC); 1008 r &= ~(LOCOMO_DAC_SDAOEB); 1009 locomo_writel(r, mapbase + LOCOMO_DAC); 1010 udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ 1011 r = locomo_readl(mapbase + LOCOMO_DAC); 1012 r |= LOCOMO_DAC_SCLOEB; 1013 locomo_writel(r, mapbase + LOCOMO_DAC); 1014 udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ 1015 udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.7 usec */ 1016 if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) { /* High is error */ 1017 printk(KERN_WARNING "locomo: m62332_senddata Error 3\n"); 1018 return; 1019 } 1020 1021 /* stop */ 1022 r = locomo_readl(mapbase + LOCOMO_DAC); 1023 r &= ~(LOCOMO_DAC_SCLOEB); 1024 locomo_writel(r, mapbase + LOCOMO_DAC); 1025 udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ 1026 udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ 1027 r = locomo_readl(mapbase + LOCOMO_DAC); 1028 r |= LOCOMO_DAC_SCLOEB; 1029 locomo_writel(r, mapbase + LOCOMO_DAC); 1030 udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ 1031 udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4 usec */ 1032 r = locomo_readl(mapbase + LOCOMO_DAC); 1033 r |= LOCOMO_DAC_SDAOEB; 1034 locomo_writel(r, mapbase + LOCOMO_DAC); 1035 udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ 1036 udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4 usec */ 1037 1038 r = locomo_readl(mapbase + LOCOMO_DAC); 1039 r |= LOCOMO_DAC_SCLOEB | LOCOMO_DAC_SDAOEB; 1040 locomo_writel(r, mapbase + LOCOMO_DAC); 1041 udelay(DAC_LOW_SETUP_TIME); /* 1000 nsec */ 1042 udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ 1043 1044 spin_unlock_irqrestore(&lchip->lock, flags); 1045 } 1046 1047 /* 1048 * LoCoMo "Register Access Bus." 1049 * 1050 * We model this as a regular bus type, and hang devices directly 1051 * off this. 1052 */ 1053 static int locomo_match(struct device *_dev, struct device_driver *_drv) 1054 { 1055 struct locomo_dev *dev = LOCOMO_DEV(_dev); 1056 struct locomo_driver *drv = LOCOMO_DRV(_drv); 1057 1058 return dev->devid == drv->devid; 1059 } 1060 1061 static int locomo_bus_suspend(struct device *dev, pm_message_t state) 1062 { 1063 struct locomo_dev *ldev = LOCOMO_DEV(dev); 1064 struct locomo_driver *drv = LOCOMO_DRV(dev->driver); 1065 int ret = 0; 1066 1067 if (drv && drv->suspend) 1068 ret = drv->suspend(ldev, state); 1069 return ret; 1070 } 1071 1072 static int locomo_bus_resume(struct device *dev) 1073 { 1074 struct locomo_dev *ldev = LOCOMO_DEV(dev); 1075 struct locomo_driver *drv = LOCOMO_DRV(dev->driver); 1076 int ret = 0; 1077 1078 if (drv && drv->resume) 1079 ret = drv->resume(ldev); 1080 return ret; 1081 } 1082 1083 static int locomo_bus_probe(struct device *dev) 1084 { 1085 struct locomo_dev *ldev = LOCOMO_DEV(dev); 1086 struct locomo_driver *drv = LOCOMO_DRV(dev->driver); 1087 int ret = -ENODEV; 1088 1089 if (drv->probe) 1090 ret = drv->probe(ldev); 1091 return ret; 1092 } 1093 1094 static int locomo_bus_remove(struct device *dev) 1095 { 1096 struct locomo_dev *ldev = LOCOMO_DEV(dev); 1097 struct locomo_driver *drv = LOCOMO_DRV(dev->driver); 1098 int ret = 0; 1099 1100 if (drv->remove) 1101 ret = drv->remove(ldev); 1102 return ret; 1103 } 1104 1105 struct bus_type locomo_bus_type = { 1106 .name = "locomo-bus", 1107 .match = locomo_match, 1108 .suspend = locomo_bus_suspend, 1109 .resume = locomo_bus_resume, 1110 }; 1111 1112 int locomo_driver_register(struct locomo_driver *driver) 1113 { 1114 driver->drv.probe = locomo_bus_probe; 1115 driver->drv.remove = locomo_bus_remove; 1116 driver->drv.bus = &locomo_bus_type; 1117 return driver_register(&driver->drv); 1118 } 1119 1120 void locomo_driver_unregister(struct locomo_driver *driver) 1121 { 1122 driver_unregister(&driver->drv); 1123 } 1124 1125 static int __init locomo_init(void) 1126 { 1127 int ret = bus_register(&locomo_bus_type); 1128 if (ret == 0) 1129 driver_register(&locomo_device_driver); 1130 return ret; 1131 } 1132 1133 static void __exit locomo_exit(void) 1134 { 1135 driver_unregister(&locomo_device_driver); 1136 bus_unregister(&locomo_bus_type); 1137 } 1138 1139 module_init(locomo_init); 1140 module_exit(locomo_exit); 1141 1142 MODULE_DESCRIPTION("Sharp LoCoMo core driver"); 1143 MODULE_LICENSE("GPL"); 1144 MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>"); 1145 1146 EXPORT_SYMBOL(locomo_driver_register); 1147 EXPORT_SYMBOL(locomo_driver_unregister); 1148 EXPORT_SYMBOL(locomo_gpio_set_dir); 1149 EXPORT_SYMBOL(locomo_gpio_read_level); 1150 EXPORT_SYMBOL(locomo_gpio_read_output); 1151 EXPORT_SYMBOL(locomo_gpio_write); 1152 EXPORT_SYMBOL(locomo_m62332_senddata); 1153