2 * TI OMAP processors GPIO emulation.
5 * Copyright (C) 2007-2009 Nokia Corporation
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 or
10 * (at your option) version 3 of the License.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, see <http://www.gnu.org/licenses/>.
42 struct omap_gpio_s omap1;
45 /* General-Purpose I/O of OMAP1 */
46 static void omap_gpio_set(void *opaque, int line, int level)
48 struct omap_gpio_s *s = &((struct omap_gpif_s *) opaque)->omap1;
49 uint16_t prev = s->inputs;
52 s->inputs |= 1 << line;
54 s->inputs &= ~(1 << line);
56 if (((s->edge & s->inputs & ~prev) | (~s->edge & ~s->inputs & prev)) &
57 (1 << line) & s->dir & ~s->mask) {
59 qemu_irq_raise(s->irq);
63 static uint32_t omap_gpio_read(void *opaque, target_phys_addr_t addr)
65 struct omap_gpio_s *s = (struct omap_gpio_s *) opaque;
66 int offset = addr & OMAP_MPUI_REG_MASK;
69 case 0x00: /* DATA_INPUT */
70 return s->inputs & s->pins;
72 case 0x04: /* DATA_OUTPUT */
75 case 0x08: /* DIRECTION_CONTROL */
78 case 0x0c: /* INTERRUPT_CONTROL */
81 case 0x10: /* INTERRUPT_MASK */
84 case 0x14: /* INTERRUPT_STATUS */
87 case 0x18: /* PIN_CONTROL (not in OMAP310) */
96 static void omap_gpio_write(void *opaque, target_phys_addr_t addr,
99 struct omap_gpio_s *s = (struct omap_gpio_s *) opaque;
100 int offset = addr & OMAP_MPUI_REG_MASK;
105 case 0x00: /* DATA_INPUT */
109 case 0x04: /* DATA_OUTPUT */
110 diff = (s->outputs ^ value) & ~s->dir;
112 while ((ln = ffs(diff))) {
115 qemu_set_irq(s->handler[ln], (value >> ln) & 1);
120 case 0x08: /* DIRECTION_CONTROL */
121 diff = s->outputs & (s->dir ^ value);
124 value = s->outputs & ~s->dir;
125 while ((ln = ffs(diff))) {
128 qemu_set_irq(s->handler[ln], (value >> ln) & 1);
133 case 0x0c: /* INTERRUPT_CONTROL */
137 case 0x10: /* INTERRUPT_MASK */
141 case 0x14: /* INTERRUPT_STATUS */
144 qemu_irq_lower(s->irq);
147 case 0x18: /* PIN_CONTROL (not in OMAP310 TRM) */
158 /* *Some* sources say the memory region is 32-bit. */
159 static CPUReadMemoryFunc * const omap_gpio_readfn[] = {
160 omap_badwidth_read16,
162 omap_badwidth_read16,
165 static CPUWriteMemoryFunc * const omap_gpio_writefn[] = {
166 omap_badwidth_write16,
168 omap_badwidth_write16,
171 static void omap_gpio_reset(struct omap_gpio_s *s)
182 struct omap2_gpio_s {
201 struct omap2_gpif_s {
207 struct omap2_gpio_s *modules;
213 /* General-Purpose Interface of OMAP2/3 */
214 static inline void omap2_gpio_module_int_update(struct omap2_gpio_s *s,
217 qemu_set_irq(s->irq[line], s->ints[line] & s->mask[line]);
220 static void omap2_gpio_module_wake(struct omap2_gpio_s *s, int line)
222 if (!(s->config[0] & (1 << 2))) /* ENAWAKEUP */
224 if (!(s->config[0] & (3 << 3))) /* Force Idle */
226 if (!(s->wumask & (1 << line)))
229 qemu_irq_raise(s->wkup);
232 static inline void omap2_gpio_module_out_update(struct omap2_gpio_s *s,
239 while ((ln = ffs(diff))) {
241 qemu_set_irq(s->handler[ln], (s->outputs >> ln) & 1);
246 static void omap2_gpio_module_level_update(struct omap2_gpio_s *s, int line)
248 s->ints[line] |= s->dir &
249 ((s->inputs & s->level[1]) | (~s->inputs & s->level[0]));
250 omap2_gpio_module_int_update(s, line);
253 static inline void omap2_gpio_module_int(struct omap2_gpio_s *s, int line)
255 s->ints[0] |= 1 << line;
256 omap2_gpio_module_int_update(s, 0);
257 s->ints[1] |= 1 << line;
258 omap2_gpio_module_int_update(s, 1);
259 omap2_gpio_module_wake(s, line);
262 static void omap2_gpio_set(void *opaque, int line, int level)
264 struct omap2_gpif_s *p = opaque;
265 struct omap2_gpio_s *s = &p->modules[line >> 5];
269 if (s->dir & (1 << line) & ((~s->inputs & s->edge[0]) | s->level[1]))
270 omap2_gpio_module_int(s, line);
271 s->inputs |= 1 << line;
273 if (s->dir & (1 << line) & ((s->inputs & s->edge[1]) | s->level[0]))
274 omap2_gpio_module_int(s, line);
275 s->inputs &= ~(1 << line);
279 static void omap2_gpio_module_reset(struct omap2_gpio_s *s)
297 static uint32_t omap2_gpio_module_read(void *opaque, target_phys_addr_t addr)
299 struct omap2_gpio_s *s = (struct omap2_gpio_s *) opaque;
302 case 0x00: /* GPIO_REVISION */
305 case 0x10: /* GPIO_SYSCONFIG */
308 case 0x14: /* GPIO_SYSSTATUS */
311 case 0x18: /* GPIO_IRQSTATUS1 */
314 case 0x1c: /* GPIO_IRQENABLE1 */
315 case 0x60: /* GPIO_CLEARIRQENABLE1 */
316 case 0x64: /* GPIO_SETIRQENABLE1 */
319 case 0x20: /* GPIO_WAKEUPENABLE */
320 case 0x80: /* GPIO_CLEARWKUENA */
321 case 0x84: /* GPIO_SETWKUENA */
324 case 0x28: /* GPIO_IRQSTATUS2 */
327 case 0x2c: /* GPIO_IRQENABLE2 */
328 case 0x70: /* GPIO_CLEARIRQENABLE2 */
329 case 0x74: /* GPIO_SETIREQNEABLE2 */
332 case 0x30: /* GPIO_CTRL */
335 case 0x34: /* GPIO_OE */
338 case 0x38: /* GPIO_DATAIN */
341 case 0x3c: /* GPIO_DATAOUT */
342 case 0x90: /* GPIO_CLEARDATAOUT */
343 case 0x94: /* GPIO_SETDATAOUT */
346 case 0x40: /* GPIO_LEVELDETECT0 */
349 case 0x44: /* GPIO_LEVELDETECT1 */
352 case 0x48: /* GPIO_RISINGDETECT */
355 case 0x4c: /* GPIO_FALLINGDETECT */
358 case 0x50: /* GPIO_DEBOUNCENABLE */
361 case 0x54: /* GPIO_DEBOUNCINGTIME */
369 static void omap2_gpio_module_write(void *opaque, target_phys_addr_t addr,
372 struct omap2_gpio_s *s = (struct omap2_gpio_s *) opaque;
377 case 0x00: /* GPIO_REVISION */
378 case 0x14: /* GPIO_SYSSTATUS */
379 case 0x38: /* GPIO_DATAIN */
383 case 0x10: /* GPIO_SYSCONFIG */
384 if (((value >> 3) & 3) == 3)
385 fprintf(stderr, "%s: bad IDLEMODE value\n", __FUNCTION__);
387 omap2_gpio_module_reset(s);
388 s->config[0] = value & 0x1d;
391 case 0x18: /* GPIO_IRQSTATUS1 */
392 if (s->ints[0] & value) {
393 s->ints[0] &= ~value;
394 omap2_gpio_module_level_update(s, 0);
398 case 0x1c: /* GPIO_IRQENABLE1 */
400 omap2_gpio_module_int_update(s, 0);
403 case 0x20: /* GPIO_WAKEUPENABLE */
407 case 0x28: /* GPIO_IRQSTATUS2 */
408 if (s->ints[1] & value) {
409 s->ints[1] &= ~value;
410 omap2_gpio_module_level_update(s, 1);
414 case 0x2c: /* GPIO_IRQENABLE2 */
416 omap2_gpio_module_int_update(s, 1);
419 case 0x30: /* GPIO_CTRL */
420 s->config[1] = value & 7;
423 case 0x34: /* GPIO_OE */
424 diff = s->outputs & (s->dir ^ value);
427 value = s->outputs & ~s->dir;
428 while ((ln = ffs(diff))) {
429 diff &= ~(1 <<-- ln);
430 qemu_set_irq(s->handler[ln], (value >> ln) & 1);
433 omap2_gpio_module_level_update(s, 0);
434 omap2_gpio_module_level_update(s, 1);
437 case 0x3c: /* GPIO_DATAOUT */
438 omap2_gpio_module_out_update(s, s->outputs ^ value);
441 case 0x40: /* GPIO_LEVELDETECT0 */
443 omap2_gpio_module_level_update(s, 0);
444 omap2_gpio_module_level_update(s, 1);
447 case 0x44: /* GPIO_LEVELDETECT1 */
449 omap2_gpio_module_level_update(s, 0);
450 omap2_gpio_module_level_update(s, 1);
453 case 0x48: /* GPIO_RISINGDETECT */
457 case 0x4c: /* GPIO_FALLINGDETECT */
461 case 0x50: /* GPIO_DEBOUNCENABLE */
465 case 0x54: /* GPIO_DEBOUNCINGTIME */
469 case 0x60: /* GPIO_CLEARIRQENABLE1 */
470 s->mask[0] &= ~value;
471 omap2_gpio_module_int_update(s, 0);
474 case 0x64: /* GPIO_SETIRQENABLE1 */
476 omap2_gpio_module_int_update(s, 0);
479 case 0x70: /* GPIO_CLEARIRQENABLE2 */
480 s->mask[1] &= ~value;
481 omap2_gpio_module_int_update(s, 1);
484 case 0x74: /* GPIO_SETIREQNEABLE2 */
486 omap2_gpio_module_int_update(s, 1);
489 case 0x80: /* GPIO_CLEARWKUENA */
493 case 0x84: /* GPIO_SETWKUENA */
497 case 0x90: /* GPIO_CLEARDATAOUT */
498 omap2_gpio_module_out_update(s, s->outputs & value);
501 case 0x94: /* GPIO_SETDATAOUT */
502 omap2_gpio_module_out_update(s, ~s->outputs & value);
511 static uint32_t omap2_gpio_module_readp(void *opaque, target_phys_addr_t addr)
513 return omap2_gpio_module_readp(opaque, addr) >> ((addr & 3) << 3);
516 static void omap2_gpio_module_writep(void *opaque, target_phys_addr_t addr,
520 uint32_t mask = 0xffff;
523 case 0x00: /* GPIO_REVISION */
524 case 0x14: /* GPIO_SYSSTATUS */
525 case 0x38: /* GPIO_DATAIN */
529 case 0x10: /* GPIO_SYSCONFIG */
530 case 0x1c: /* GPIO_IRQENABLE1 */
531 case 0x20: /* GPIO_WAKEUPENABLE */
532 case 0x2c: /* GPIO_IRQENABLE2 */
533 case 0x30: /* GPIO_CTRL */
534 case 0x34: /* GPIO_OE */
535 case 0x3c: /* GPIO_DATAOUT */
536 case 0x40: /* GPIO_LEVELDETECT0 */
537 case 0x44: /* GPIO_LEVELDETECT1 */
538 case 0x48: /* GPIO_RISINGDETECT */
539 case 0x4c: /* GPIO_FALLINGDETECT */
540 case 0x50: /* GPIO_DEBOUNCENABLE */
541 case 0x54: /* GPIO_DEBOUNCINGTIME */
542 cur = omap2_gpio_module_read(opaque, addr & ~3) &
543 ~(mask << ((addr & 3) << 3));
546 case 0x18: /* GPIO_IRQSTATUS1 */
547 case 0x28: /* GPIO_IRQSTATUS2 */
548 case 0x60: /* GPIO_CLEARIRQENABLE1 */
549 case 0x64: /* GPIO_SETIRQENABLE1 */
550 case 0x70: /* GPIO_CLEARIRQENABLE2 */
551 case 0x74: /* GPIO_SETIREQNEABLE2 */
552 case 0x80: /* GPIO_CLEARWKUENA */
553 case 0x84: /* GPIO_SETWKUENA */
554 case 0x90: /* GPIO_CLEARDATAOUT */
555 case 0x94: /* GPIO_SETDATAOUT */
556 value <<= (addr & 3) << 3;
557 omap2_gpio_module_write(opaque, addr, cur | value);
566 static CPUReadMemoryFunc * const omap2_gpio_module_readfn[] = {
567 omap2_gpio_module_readp,
568 omap2_gpio_module_readp,
569 omap2_gpio_module_read,
572 static CPUWriteMemoryFunc * const omap2_gpio_module_writefn[] = {
573 omap2_gpio_module_writep,
574 omap2_gpio_module_writep,
575 omap2_gpio_module_write,
578 static void omap_gpif_reset(DeviceState *dev)
580 struct omap_gpif_s *s = FROM_SYSBUS(struct omap_gpif_s,
581 sysbus_from_qdev(dev));
582 omap_gpio_reset(&s->omap1);
585 static void omap2_gpif_reset(DeviceState *dev)
588 struct omap2_gpif_s *s = FROM_SYSBUS(struct omap2_gpif_s,
589 sysbus_from_qdev(dev));
590 for (i = 0; i < s->modulecount; i++) {
591 omap2_gpio_module_reset(&s->modules[i]);
597 static uint32_t omap2_gpif_top_read(void *opaque, target_phys_addr_t addr)
599 struct omap2_gpif_s *s = (struct omap2_gpif_s *) opaque;
602 case 0x00: /* IPGENERICOCPSPL_REVISION */
605 case 0x10: /* IPGENERICOCPSPL_SYSCONFIG */
608 case 0x14: /* IPGENERICOCPSPL_SYSSTATUS */
611 case 0x18: /* IPGENERICOCPSPL_IRQSTATUS */
614 case 0x40: /* IPGENERICOCPSPL_GPO */
617 case 0x50: /* IPGENERICOCPSPL_GPI */
625 static void omap2_gpif_top_write(void *opaque, target_phys_addr_t addr,
628 struct omap2_gpif_s *s = (struct omap2_gpif_s *) opaque;
631 case 0x00: /* IPGENERICOCPSPL_REVISION */
632 case 0x14: /* IPGENERICOCPSPL_SYSSTATUS */
633 case 0x18: /* IPGENERICOCPSPL_IRQSTATUS */
634 case 0x50: /* IPGENERICOCPSPL_GPI */
638 case 0x10: /* IPGENERICOCPSPL_SYSCONFIG */
639 if (value & (1 << 1)) /* SOFTRESET */
640 omap2_gpif_reset(&s->busdev.qdev);
641 s->autoidle = value & 1;
644 case 0x40: /* IPGENERICOCPSPL_GPO */
654 static CPUReadMemoryFunc * const omap2_gpif_top_readfn[] = {
660 static CPUWriteMemoryFunc * const omap2_gpif_top_writefn[] = {
661 omap2_gpif_top_write,
662 omap2_gpif_top_write,
663 omap2_gpif_top_write,
666 static int omap_gpio_init(SysBusDevice *dev)
668 struct omap_gpif_s *s = FROM_SYSBUS(struct omap_gpif_s, dev);
670 hw_error("omap-gpio: clk not connected\n");
672 qdev_init_gpio_in(&dev->qdev, omap_gpio_set, 16);
673 qdev_init_gpio_out(&dev->qdev, s->omap1.handler, 16);
674 sysbus_init_irq(dev, &s->omap1.irq);
675 sysbus_init_mmio(dev, 0x1000,
676 cpu_register_io_memory(omap_gpio_readfn,
679 DEVICE_NATIVE_ENDIAN));
683 static int omap2_gpio_init(SysBusDevice *dev)
686 struct omap2_gpif_s *s = FROM_SYSBUS(struct omap2_gpif_s, dev);
688 hw_error("omap2-gpio: iclk not connected\n");
690 if (s->mpu_model < omap3430) {
691 s->modulecount = (s->mpu_model < omap2430) ? 4 : 5;
692 sysbus_init_mmio(dev, 0x1000,
693 cpu_register_io_memory(omap2_gpif_top_readfn,
694 omap2_gpif_top_writefn, s,
695 DEVICE_NATIVE_ENDIAN));
699 s->modules = g_malloc0(s->modulecount * sizeof(struct omap2_gpio_s));
700 s->handler = g_malloc0(s->modulecount * 32 * sizeof(qemu_irq));
701 qdev_init_gpio_in(&dev->qdev, omap2_gpio_set, s->modulecount * 32);
702 qdev_init_gpio_out(&dev->qdev, s->handler, s->modulecount * 32);
703 for (i = 0; i < s->modulecount; i++) {
704 struct omap2_gpio_s *m = &s->modules[i];
706 hw_error("omap2-gpio: fclk%d not connected\n", i);
708 m->revision = (s->mpu_model < omap3430) ? 0x18 : 0x25;
709 m->handler = &s->handler[i * 32];
710 sysbus_init_irq(dev, &m->irq[0]); /* mpu irq */
711 sysbus_init_irq(dev, &m->irq[1]); /* dsp irq */
712 sysbus_init_irq(dev, &m->wkup);
713 sysbus_init_mmio(dev, 0x1000,
714 cpu_register_io_memory(omap2_gpio_module_readfn,
715 omap2_gpio_module_writefn,
716 m, DEVICE_NATIVE_ENDIAN));
721 /* Using qdev pointer properties for the clocks is not ideal.
722 * qdev should support a generic means of defining a 'port' with
723 * an arbitrary interface for connecting two devices. Then we
724 * could reframe the omap clock API in terms of clock ports,
725 * and get some type safety. For now the best qdev provides is
726 * passing an arbitrary pointer.
727 * (It's not possible to pass in the string which is the clock
728 * name, because this device does not have the necessary information
729 * (ie the struct omap_mpu_state_s*) to do the clockname to pointer
733 static SysBusDeviceInfo omap_gpio_info = {
734 .init = omap_gpio_init,
735 .qdev.name = "omap-gpio",
736 .qdev.size = sizeof(struct omap_gpif_s),
737 .qdev.reset = omap_gpif_reset,
738 .qdev.props = (Property[]) {
739 DEFINE_PROP_INT32("mpu_model", struct omap_gpif_s, mpu_model, 0),
740 DEFINE_PROP_PTR("clk", struct omap_gpif_s, clk),
741 DEFINE_PROP_END_OF_LIST()
745 static SysBusDeviceInfo omap2_gpio_info = {
746 .init = omap2_gpio_init,
747 .qdev.name = "omap2-gpio",
748 .qdev.size = sizeof(struct omap2_gpif_s),
749 .qdev.reset = omap2_gpif_reset,
750 .qdev.props = (Property[]) {
751 DEFINE_PROP_INT32("mpu_model", struct omap2_gpif_s, mpu_model, 0),
752 DEFINE_PROP_PTR("iclk", struct omap2_gpif_s, iclk),
753 DEFINE_PROP_PTR("fclk0", struct omap2_gpif_s, fclk[0]),
754 DEFINE_PROP_PTR("fclk1", struct omap2_gpif_s, fclk[1]),
755 DEFINE_PROP_PTR("fclk2", struct omap2_gpif_s, fclk[2]),
756 DEFINE_PROP_PTR("fclk3", struct omap2_gpif_s, fclk[3]),
757 DEFINE_PROP_PTR("fclk4", struct omap2_gpif_s, fclk[4]),
758 DEFINE_PROP_PTR("fclk5", struct omap2_gpif_s, fclk[5]),
759 DEFINE_PROP_END_OF_LIST()
763 static void omap_gpio_register_device(void)
765 sysbus_register_withprop(&omap_gpio_info);
766 sysbus_register_withprop(&omap2_gpio_info);
769 device_init(omap_gpio_register_device)