2 * CBUS three-pin bus and the Retu / Betty / Tahvo / Vilma / Avilma /
3 * Hinku / Vinku / Ahne / Pihi chips used in various Nokia platforms.
4 * Based on reverse-engineering of a linux driver.
6 * Copyright (C) 2008 Nokia Corporation
7 * Written by Andrzej Zaborowski <andrew@openedhand.com>
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 or
12 * (at your option) version 3 of the License.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #include "qemu-common.h"
52 struct cbus_slave_s *slave[8];
57 void (*io)(void *opaque, int rw, int reg, uint16_t *val);
61 static void cbus_io(struct cbus_priv_s *s)
63 if (s->slave[s->addr])
64 s->slave[s->addr]->io(s->slave[s->addr]->opaque,
65 s->rw, s->reg, &s->val);
67 cpu_abort(cpu_single_env, "%s: bad slave address %i\n",
68 __FUNCTION__, s->addr);
71 static void cbus_cycle(struct cbus_priv_s *s)
75 s->addr = (s->val >> 6) & 7;
76 s->rw = (s->val >> 5) & 1;
77 s->reg = (s->val >> 0) & 0x1f;
79 s->cycle = cbus_value;
92 s->cycle = cbus_address;
100 static void cbus_clk(void *opaque, int line, int level)
102 struct cbus_priv_s *s = (struct cbus_priv_s *) opaque;
104 if (!s->sel && level && !s->clk) {
106 s->val |= s->dat << (s->bit --);
108 qemu_set_irq(s->dat_out, (s->val >> (s->bit --)) & 1);
117 static void cbus_dat(void *opaque, int line, int level)
119 struct cbus_priv_s *s = (struct cbus_priv_s *) opaque;
124 static void cbus_sel(void *opaque, int line, int level)
126 struct cbus_priv_s *s = (struct cbus_priv_s *) opaque;
137 struct cbus_s *cbus_init(qemu_irq dat)
139 struct cbus_priv_s *s = (struct cbus_priv_s *) qemu_mallocz(sizeof(*s));
142 s->cbus.clk = qemu_allocate_irqs(cbus_clk, s, 1)[0];
143 s->cbus.dat = qemu_allocate_irqs(cbus_dat, s, 1)[0];
144 s->cbus.sel = qemu_allocate_irqs(cbus_sel, s, 1)[0];
153 void cbus_attach(struct cbus_s *bus, void *slave_opaque)
155 struct cbus_slave_s *slave = (struct cbus_slave_s *) slave_opaque;
156 struct cbus_priv_s *s = (struct cbus_priv_s *) bus;
158 s->slave[slave->addr] = slave;
177 struct cbus_slave_s cbus;
180 static void retu_interrupt_update(struct cbus_retu_s *s)
182 qemu_set_irq(s->irq, s->irqst & ~s->irqen);
185 #define RETU_REG_ASICR 0x00 /* (RO) ASIC ID & revision */
186 #define RETU_REG_IDR 0x01 /* (T) Interrupt ID */
187 #define RETU_REG_IMR 0x02 /* (RW) Interrupt mask */
188 #define RETU_REG_RTCDSR 0x03 /* (RW) RTC seconds register */
189 #define RETU_REG_RTCHMR 0x04 /* (RO) RTC hours and minutes reg */
190 #define RETU_REG_RTCHMAR 0x05 /* (RW) RTC hours and minutes set reg */
191 #define RETU_REG_RTCCALR 0x06 /* (RW) RTC calibration register */
192 #define RETU_REG_ADCR 0x08 /* (RW) ADC result register */
193 #define RETU_REG_ADCSCR 0x09 /* (RW) ADC sample control register */
194 #define RETU_REG_AFCR 0x0a /* (RW) AFC register */
195 #define RETU_REG_ANTIFR 0x0b /* (RW) AntiF register */
196 #define RETU_REG_CALIBR 0x0c /* (RW) CalibR register*/
197 #define RETU_REG_CCR1 0x0d /* (RW) Common control register 1 */
198 #define RETU_REG_CCR2 0x0e /* (RW) Common control register 2 */
199 #define RETU_REG_RCTRL_CLR 0x0f /* (T) Regulator clear register */
200 #define RETU_REG_RCTRL_SET 0x10 /* (T) Regulator set register */
201 #define RETU_REG_TXCR 0x11 /* (RW) TxC register */
202 #define RETU_REG_STATUS 0x16 /* (RO) Status register */
203 #define RETU_REG_WATCHDOG 0x17 /* (RW) Watchdog register */
204 #define RETU_REG_AUDTXR 0x18 /* (RW) Audio Codec Tx register */
205 #define RETU_REG_AUDPAR 0x19 /* (RW) AudioPA register */
206 #define RETU_REG_AUDRXR1 0x1a /* (RW) Audio receive register 1 */
207 #define RETU_REG_AUDRXR2 0x1b /* (RW) Audio receive register 2 */
208 #define RETU_REG_SGR1 0x1c /* (RW) */
209 #define RETU_REG_SCR1 0x1d /* (RW) */
210 #define RETU_REG_SGR2 0x1e /* (RW) */
211 #define RETU_REG_SCR2 0x1f /* (RW) */
213 /* Retu Interrupt sources */
215 retu_int_pwr = 0, /* Power button */
216 retu_int_char = 1, /* Charger */
217 retu_int_rtcs = 2, /* Seconds */
218 retu_int_rtcm = 3, /* Minutes */
219 retu_int_rtcd = 4, /* Days */
220 retu_int_rtca = 5, /* Alarm */
221 retu_int_hook = 6, /* Hook */
222 retu_int_head = 7, /* Headset */
223 retu_int_adcs = 8, /* ADC sample */
226 /* Retu ADC channel wiring */
228 retu_adc_bsi = 1, /* BSI */
229 retu_adc_batt_temp = 2, /* Battery temperature */
230 retu_adc_chg_volt = 3, /* Charger voltage */
231 retu_adc_head_det = 4, /* Headset detection */
232 retu_adc_hook_det = 5, /* Hook detection */
233 retu_adc_rf_gp = 6, /* RF GP */
234 retu_adc_tx_det = 7, /* Wideband Tx detection */
235 retu_adc_batt_volt = 8, /* Battery voltage */
236 retu_adc_sens = 10, /* Light sensor */
237 retu_adc_sens_temp = 11, /* Light sensor temperature */
238 retu_adc_bbatt_volt = 12, /* Backup battery voltage */
239 retu_adc_self_temp = 13, /* RETU temperature */
242 static inline uint16_t retu_read(struct cbus_retu_s *s, int reg)
245 printf("RETU read at %02x\n", reg);
250 return 0x0215 | (s->is_vilma << 7);
252 case RETU_REG_IDR: /* TODO: Or is this ffs(s->irqst)? */
258 case RETU_REG_RTCDSR:
259 case RETU_REG_RTCHMR:
260 case RETU_REG_RTCHMAR:
264 case RETU_REG_RTCCALR:
268 return (s->channel << 10) | s->result[s->channel];
269 case RETU_REG_ADCSCR:
273 case RETU_REG_ANTIFR:
274 case RETU_REG_CALIBR:
283 case RETU_REG_RCTRL_CLR:
284 case RETU_REG_RCTRL_SET:
289 case RETU_REG_STATUS:
292 case RETU_REG_WATCHDOG:
293 case RETU_REG_AUDTXR:
294 case RETU_REG_AUDPAR:
295 case RETU_REG_AUDRXR1:
296 case RETU_REG_AUDRXR2:
305 cpu_abort(cpu_single_env, "%s: bad register %02x\n",
310 static inline void retu_write(struct cbus_retu_s *s, int reg, uint16_t val)
313 printf("RETU write of %04x at %02x\n", val, reg);
319 retu_interrupt_update(s);
324 retu_interrupt_update(s);
327 case RETU_REG_RTCDSR:
328 case RETU_REG_RTCHMAR:
332 case RETU_REG_RTCCALR:
337 s->channel = (val >> 10) & 0xf;
338 s->irqst |= 1 << retu_int_adcs;
339 retu_interrupt_update(s);
341 case RETU_REG_ADCSCR:
346 case RETU_REG_ANTIFR:
347 case RETU_REG_CALIBR:
356 case RETU_REG_RCTRL_CLR:
357 case RETU_REG_RCTRL_SET:
361 case RETU_REG_WATCHDOG:
362 if (val == 0 && (s->cc[0] & 2))
363 qemu_system_shutdown_request();
367 case RETU_REG_AUDTXR:
368 case RETU_REG_AUDPAR:
369 case RETU_REG_AUDRXR1:
370 case RETU_REG_AUDRXR2:
379 cpu_abort(cpu_single_env, "%s: bad register %02x\n",
384 static void retu_io(void *opaque, int rw, int reg, uint16_t *val)
386 struct cbus_retu_s *s = (struct cbus_retu_s *) opaque;
389 *val = retu_read(s, reg);
391 retu_write(s, reg, *val);
394 void *retu_init(qemu_irq irq, int vilma)
396 struct cbus_retu_s *s = (struct cbus_retu_s *) qemu_mallocz(sizeof(*s));
402 s->is_vilma = !!vilma;
404 s->result[retu_adc_bsi] = 0x3c2;
405 s->result[retu_adc_batt_temp] = 0x0fc;
406 s->result[retu_adc_chg_volt] = 0x165;
407 s->result[retu_adc_head_det] = 123;
408 s->result[retu_adc_hook_det] = 1023;
409 s->result[retu_adc_rf_gp] = 0x11;
410 s->result[retu_adc_tx_det] = 0x11;
411 s->result[retu_adc_batt_volt] = 0x250;
412 s->result[retu_adc_sens] = 2;
413 s->result[retu_adc_sens_temp] = 0x11;
414 s->result[retu_adc_bbatt_volt] = 0x3d0;
415 s->result[retu_adc_self_temp] = 0x330;
418 s->cbus.io = retu_io;
424 void retu_key_event(void *retu, int state)
426 struct cbus_slave_s *slave = (struct cbus_slave_s *) retu;
427 struct cbus_retu_s *s = (struct cbus_retu_s *) slave->opaque;
429 s->irqst |= 1 << retu_int_pwr;
430 retu_interrupt_update(s);
433 s->status &= ~(1 << 5);
439 static void retu_head_event(void *retu, int state)
441 struct cbus_slave_s *slave = (struct cbus_slave_s *) retu;
442 struct cbus_retu_s *s = (struct cbus_retu_s *) slave->opaque;
444 if ((s->cc[0] & 0x500) == 0x500) { /* TODO: Which bits? */
445 /* TODO: reissue the interrupt every 100ms or so. */
446 s->irqst |= 1 << retu_int_head;
447 retu_interrupt_update(s);
451 s->result[retu_adc_head_det] = 50;
453 s->result[retu_adc_head_det] = 123;
456 static void retu_hook_event(void *retu, int state)
458 struct cbus_slave_s *slave = (struct cbus_slave_s *) retu;
459 struct cbus_retu_s *s = (struct cbus_retu_s *) slave->opaque;
461 if ((s->cc[0] & 0x500) == 0x500) {
462 /* TODO: reissue the interrupt every 100ms or so. */
463 s->irqst |= 1 << retu_int_hook;
464 retu_interrupt_update(s);
468 s->result[retu_adc_hook_det] = 50;
470 s->result[retu_adc_hook_det] = 123;
475 struct cbus_tahvo_s {
485 struct cbus_slave_s cbus;
488 static void tahvo_interrupt_update(struct cbus_tahvo_s *s)
490 qemu_set_irq(s->irq, s->irqst & ~s->irqen);
493 #define TAHVO_REG_ASICR 0x00 /* (RO) ASIC ID & revision */
494 #define TAHVO_REG_IDR 0x01 /* (T) Interrupt ID */
495 #define TAHVO_REG_IDSR 0x02 /* (RO) Interrupt status */
496 #define TAHVO_REG_IMR 0x03 /* (RW) Interrupt mask */
497 #define TAHVO_REG_CHAPWMR 0x04 /* (RW) Charger PWM */
498 #define TAHVO_REG_LEDPWMR 0x05 /* (RW) LED PWM */
499 #define TAHVO_REG_USBR 0x06 /* (RW) USB control */
500 #define TAHVO_REG_RCR 0x07 /* (RW) Some kind of power management */
501 #define TAHVO_REG_CCR1 0x08 /* (RW) Common control register 1 */
502 #define TAHVO_REG_CCR2 0x09 /* (RW) Common control register 2 */
503 #define TAHVO_REG_TESTR1 0x0a /* (RW) Test register 1 */
504 #define TAHVO_REG_TESTR2 0x0b /* (RW) Test register 2 */
505 #define TAHVO_REG_NOPR 0x0c /* (RW) Number of periods */
506 #define TAHVO_REG_FRR 0x0d /* (RO) FR */
508 static inline uint16_t tahvo_read(struct cbus_tahvo_s *s, int reg)
511 printf("TAHVO read at %02x\n", reg);
515 case TAHVO_REG_ASICR:
516 return 0x0021 | (s->is_betty ? 0x0b00 : 0x0300); /* 22 in N810 */
519 case TAHVO_REG_IDSR: /* XXX: what does this do? */
525 case TAHVO_REG_CHAPWMR:
528 case TAHVO_REG_LEDPWMR:
539 case TAHVO_REG_TESTR1:
540 case TAHVO_REG_TESTR2:
546 cpu_abort(cpu_single_env, "%s: bad register %02x\n",
551 static inline void tahvo_write(struct cbus_tahvo_s *s, int reg, uint16_t val)
554 printf("TAHVO write of %04x at %02x\n", val, reg);
560 tahvo_interrupt_update(s);
565 tahvo_interrupt_update(s);
568 case TAHVO_REG_CHAPWMR:
572 case TAHVO_REG_LEDPWMR:
573 if (s->backlight != (val & 0x7f)) {
574 s->backlight = val & 0x7f;
575 printf("%s: LCD backlight now at %i / 127\n",
576 __FUNCTION__, s->backlight);
590 case TAHVO_REG_TESTR1:
591 case TAHVO_REG_TESTR2:
597 cpu_abort(cpu_single_env, "%s: bad register %02x\n",
602 static void tahvo_io(void *opaque, int rw, int reg, uint16_t *val)
604 struct cbus_tahvo_s *s = (struct cbus_tahvo_s *) opaque;
607 *val = tahvo_read(s, reg);
609 tahvo_write(s, reg, *val);
612 void *tahvo_init(qemu_irq irq, int betty)
614 struct cbus_tahvo_s *s = (struct cbus_tahvo_s *) qemu_mallocz(sizeof(*s));
619 s->is_betty = !!betty;
622 s->cbus.io = tahvo_io;