root / hw / cbus.c @ fe8de492
History | View | Annotate | Download (14.9 kB)
1 |
/*
|
---|---|
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.
|
5 |
*
|
6 |
* Copyright (C) 2008 Nokia Corporation
|
7 |
* Written by Andrzej Zaborowski <andrew@openedhand.com>
|
8 |
*
|
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.
|
13 |
*
|
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.
|
18 |
*
|
19 |
* You should have received a copy of the GNU General Public License along
|
20 |
* with this program; if not, write to the Free Software Foundation, Inc.,
|
21 |
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
22 |
*/
|
23 |
|
24 |
#include "qemu-common.h" |
25 |
#include "irq.h" |
26 |
#include "devices.h" |
27 |
#include "sysemu.h" |
28 |
|
29 |
//#define DEBUG
|
30 |
|
31 |
typedef struct { |
32 |
void *opaque;
|
33 |
void (*io)(void *opaque, int rw, int reg, uint16_t *val); |
34 |
int addr;
|
35 |
} CBusSlave; |
36 |
|
37 |
typedef struct { |
38 |
CBus cbus; |
39 |
|
40 |
int sel;
|
41 |
int dat;
|
42 |
int clk;
|
43 |
int bit;
|
44 |
int dir;
|
45 |
uint16_t val; |
46 |
qemu_irq dat_out; |
47 |
|
48 |
int addr;
|
49 |
int reg;
|
50 |
int rw;
|
51 |
enum {
|
52 |
cbus_address, |
53 |
cbus_value, |
54 |
} cycle; |
55 |
|
56 |
CBusSlave *slave[8];
|
57 |
} CBusPriv; |
58 |
|
59 |
static void cbus_io(CBusPriv *s) |
60 |
{ |
61 |
if (s->slave[s->addr])
|
62 |
s->slave[s->addr]->io(s->slave[s->addr]->opaque, |
63 |
s->rw, s->reg, &s->val); |
64 |
else
|
65 |
hw_error("%s: bad slave address %i\n", __FUNCTION__, s->addr);
|
66 |
} |
67 |
|
68 |
static void cbus_cycle(CBusPriv *s) |
69 |
{ |
70 |
switch (s->cycle) {
|
71 |
case cbus_address:
|
72 |
s->addr = (s->val >> 6) & 7; |
73 |
s->rw = (s->val >> 5) & 1; |
74 |
s->reg = (s->val >> 0) & 0x1f; |
75 |
|
76 |
s->cycle = cbus_value; |
77 |
s->bit = 15;
|
78 |
s->dir = !s->rw; |
79 |
s->val = 0;
|
80 |
|
81 |
if (s->rw)
|
82 |
cbus_io(s); |
83 |
break;
|
84 |
|
85 |
case cbus_value:
|
86 |
if (!s->rw)
|
87 |
cbus_io(s); |
88 |
|
89 |
s->cycle = cbus_address; |
90 |
s->bit = 8;
|
91 |
s->dir = 1;
|
92 |
s->val = 0;
|
93 |
break;
|
94 |
} |
95 |
} |
96 |
|
97 |
static void cbus_clk(void *opaque, int line, int level) |
98 |
{ |
99 |
CBusPriv *s = (CBusPriv *) opaque; |
100 |
|
101 |
if (!s->sel && level && !s->clk) {
|
102 |
if (s->dir)
|
103 |
s->val |= s->dat << (s->bit --); |
104 |
else
|
105 |
qemu_set_irq(s->dat_out, (s->val >> (s->bit --)) & 1);
|
106 |
|
107 |
if (s->bit < 0) |
108 |
cbus_cycle(s); |
109 |
} |
110 |
|
111 |
s->clk = level; |
112 |
} |
113 |
|
114 |
static void cbus_dat(void *opaque, int line, int level) |
115 |
{ |
116 |
CBusPriv *s = (CBusPriv *) opaque; |
117 |
|
118 |
s->dat = level; |
119 |
} |
120 |
|
121 |
static void cbus_sel(void *opaque, int line, int level) |
122 |
{ |
123 |
CBusPriv *s = (CBusPriv *) opaque; |
124 |
|
125 |
if (!level) {
|
126 |
s->dir = 1;
|
127 |
s->bit = 8;
|
128 |
s->val = 0;
|
129 |
} |
130 |
|
131 |
s->sel = level; |
132 |
} |
133 |
|
134 |
CBus *cbus_init(qemu_irq dat) |
135 |
{ |
136 |
CBusPriv *s = (CBusPriv *) qemu_mallocz(sizeof(*s));
|
137 |
|
138 |
s->dat_out = dat; |
139 |
s->cbus.clk = qemu_allocate_irqs(cbus_clk, s, 1)[0]; |
140 |
s->cbus.dat = qemu_allocate_irqs(cbus_dat, s, 1)[0]; |
141 |
s->cbus.sel = qemu_allocate_irqs(cbus_sel, s, 1)[0]; |
142 |
|
143 |
s->sel = 1;
|
144 |
s->clk = 0;
|
145 |
s->dat = 0;
|
146 |
|
147 |
return &s->cbus;
|
148 |
} |
149 |
|
150 |
void cbus_attach(CBus *bus, void *slave_opaque) |
151 |
{ |
152 |
CBusSlave *slave = (CBusSlave *) slave_opaque; |
153 |
CBusPriv *s = (CBusPriv *) bus; |
154 |
|
155 |
s->slave[slave->addr] = slave; |
156 |
} |
157 |
|
158 |
/* Retu/Vilma */
|
159 |
typedef struct { |
160 |
uint16_t irqst; |
161 |
uint16_t irqen; |
162 |
uint16_t cc[2];
|
163 |
int channel;
|
164 |
uint16_t result[16];
|
165 |
uint16_t sample; |
166 |
uint16_t status; |
167 |
|
168 |
struct {
|
169 |
uint16_t cal; |
170 |
} rtc; |
171 |
|
172 |
int is_vilma;
|
173 |
qemu_irq irq; |
174 |
CBusSlave cbus; |
175 |
} CBusRetu; |
176 |
|
177 |
static void retu_interrupt_update(CBusRetu *s) |
178 |
{ |
179 |
qemu_set_irq(s->irq, s->irqst & ~s->irqen); |
180 |
} |
181 |
|
182 |
#define RETU_REG_ASICR 0x00 /* (RO) ASIC ID & revision */ |
183 |
#define RETU_REG_IDR 0x01 /* (T) Interrupt ID */ |
184 |
#define RETU_REG_IMR 0x02 /* (RW) Interrupt mask */ |
185 |
#define RETU_REG_RTCDSR 0x03 /* (RW) RTC seconds register */ |
186 |
#define RETU_REG_RTCHMR 0x04 /* (RO) RTC hours and minutes reg */ |
187 |
#define RETU_REG_RTCHMAR 0x05 /* (RW) RTC hours and minutes set reg */ |
188 |
#define RETU_REG_RTCCALR 0x06 /* (RW) RTC calibration register */ |
189 |
#define RETU_REG_ADCR 0x08 /* (RW) ADC result register */ |
190 |
#define RETU_REG_ADCSCR 0x09 /* (RW) ADC sample control register */ |
191 |
#define RETU_REG_AFCR 0x0a /* (RW) AFC register */ |
192 |
#define RETU_REG_ANTIFR 0x0b /* (RW) AntiF register */ |
193 |
#define RETU_REG_CALIBR 0x0c /* (RW) CalibR register*/ |
194 |
#define RETU_REG_CCR1 0x0d /* (RW) Common control register 1 */ |
195 |
#define RETU_REG_CCR2 0x0e /* (RW) Common control register 2 */ |
196 |
#define RETU_REG_RCTRL_CLR 0x0f /* (T) Regulator clear register */ |
197 |
#define RETU_REG_RCTRL_SET 0x10 /* (T) Regulator set register */ |
198 |
#define RETU_REG_TXCR 0x11 /* (RW) TxC register */ |
199 |
#define RETU_REG_STATUS 0x16 /* (RO) Status register */ |
200 |
#define RETU_REG_WATCHDOG 0x17 /* (RW) Watchdog register */ |
201 |
#define RETU_REG_AUDTXR 0x18 /* (RW) Audio Codec Tx register */ |
202 |
#define RETU_REG_AUDPAR 0x19 /* (RW) AudioPA register */ |
203 |
#define RETU_REG_AUDRXR1 0x1a /* (RW) Audio receive register 1 */ |
204 |
#define RETU_REG_AUDRXR2 0x1b /* (RW) Audio receive register 2 */ |
205 |
#define RETU_REG_SGR1 0x1c /* (RW) */ |
206 |
#define RETU_REG_SCR1 0x1d /* (RW) */ |
207 |
#define RETU_REG_SGR2 0x1e /* (RW) */ |
208 |
#define RETU_REG_SCR2 0x1f /* (RW) */ |
209 |
|
210 |
/* Retu Interrupt sources */
|
211 |
enum {
|
212 |
retu_int_pwr = 0, /* Power button */ |
213 |
retu_int_char = 1, /* Charger */ |
214 |
retu_int_rtcs = 2, /* Seconds */ |
215 |
retu_int_rtcm = 3, /* Minutes */ |
216 |
retu_int_rtcd = 4, /* Days */ |
217 |
retu_int_rtca = 5, /* Alarm */ |
218 |
retu_int_hook = 6, /* Hook */ |
219 |
retu_int_head = 7, /* Headset */ |
220 |
retu_int_adcs = 8, /* ADC sample */ |
221 |
}; |
222 |
|
223 |
/* Retu ADC channel wiring */
|
224 |
enum {
|
225 |
retu_adc_bsi = 1, /* BSI */ |
226 |
retu_adc_batt_temp = 2, /* Battery temperature */ |
227 |
retu_adc_chg_volt = 3, /* Charger voltage */ |
228 |
retu_adc_head_det = 4, /* Headset detection */ |
229 |
retu_adc_hook_det = 5, /* Hook detection */ |
230 |
retu_adc_rf_gp = 6, /* RF GP */ |
231 |
retu_adc_tx_det = 7, /* Wideband Tx detection */ |
232 |
retu_adc_batt_volt = 8, /* Battery voltage */ |
233 |
retu_adc_sens = 10, /* Light sensor */ |
234 |
retu_adc_sens_temp = 11, /* Light sensor temperature */ |
235 |
retu_adc_bbatt_volt = 12, /* Backup battery voltage */ |
236 |
retu_adc_self_temp = 13, /* RETU temperature */ |
237 |
}; |
238 |
|
239 |
static inline uint16_t retu_read(CBusRetu *s, int reg) |
240 |
{ |
241 |
#ifdef DEBUG
|
242 |
printf("RETU read at %02x\n", reg);
|
243 |
#endif
|
244 |
|
245 |
switch (reg) {
|
246 |
case RETU_REG_ASICR:
|
247 |
return 0x0215 | (s->is_vilma << 7); |
248 |
|
249 |
case RETU_REG_IDR: /* TODO: Or is this ffs(s->irqst)? */ |
250 |
return s->irqst;
|
251 |
|
252 |
case RETU_REG_IMR:
|
253 |
return s->irqen;
|
254 |
|
255 |
case RETU_REG_RTCDSR:
|
256 |
case RETU_REG_RTCHMR:
|
257 |
case RETU_REG_RTCHMAR:
|
258 |
/* TODO */
|
259 |
return 0x0000; |
260 |
|
261 |
case RETU_REG_RTCCALR:
|
262 |
return s->rtc.cal;
|
263 |
|
264 |
case RETU_REG_ADCR:
|
265 |
return (s->channel << 10) | s->result[s->channel]; |
266 |
case RETU_REG_ADCSCR:
|
267 |
return s->sample;
|
268 |
|
269 |
case RETU_REG_AFCR:
|
270 |
case RETU_REG_ANTIFR:
|
271 |
case RETU_REG_CALIBR:
|
272 |
/* TODO */
|
273 |
return 0x0000; |
274 |
|
275 |
case RETU_REG_CCR1:
|
276 |
return s->cc[0]; |
277 |
case RETU_REG_CCR2:
|
278 |
return s->cc[1]; |
279 |
|
280 |
case RETU_REG_RCTRL_CLR:
|
281 |
case RETU_REG_RCTRL_SET:
|
282 |
case RETU_REG_TXCR:
|
283 |
/* TODO */
|
284 |
return 0x0000; |
285 |
|
286 |
case RETU_REG_STATUS:
|
287 |
return s->status;
|
288 |
|
289 |
case RETU_REG_WATCHDOG:
|
290 |
case RETU_REG_AUDTXR:
|
291 |
case RETU_REG_AUDPAR:
|
292 |
case RETU_REG_AUDRXR1:
|
293 |
case RETU_REG_AUDRXR2:
|
294 |
case RETU_REG_SGR1:
|
295 |
case RETU_REG_SCR1:
|
296 |
case RETU_REG_SGR2:
|
297 |
case RETU_REG_SCR2:
|
298 |
/* TODO */
|
299 |
return 0x0000; |
300 |
|
301 |
default:
|
302 |
hw_error("%s: bad register %02x\n", __FUNCTION__, reg);
|
303 |
} |
304 |
} |
305 |
|
306 |
static inline void retu_write(CBusRetu *s, int reg, uint16_t val) |
307 |
{ |
308 |
#ifdef DEBUG
|
309 |
printf("RETU write of %04x at %02x\n", val, reg);
|
310 |
#endif
|
311 |
|
312 |
switch (reg) {
|
313 |
case RETU_REG_IDR:
|
314 |
s->irqst ^= val; |
315 |
retu_interrupt_update(s); |
316 |
break;
|
317 |
|
318 |
case RETU_REG_IMR:
|
319 |
s->irqen = val; |
320 |
retu_interrupt_update(s); |
321 |
break;
|
322 |
|
323 |
case RETU_REG_RTCDSR:
|
324 |
case RETU_REG_RTCHMAR:
|
325 |
/* TODO */
|
326 |
break;
|
327 |
|
328 |
case RETU_REG_RTCCALR:
|
329 |
s->rtc.cal = val; |
330 |
break;
|
331 |
|
332 |
case RETU_REG_ADCR:
|
333 |
s->channel = (val >> 10) & 0xf; |
334 |
s->irqst |= 1 << retu_int_adcs;
|
335 |
retu_interrupt_update(s); |
336 |
break;
|
337 |
case RETU_REG_ADCSCR:
|
338 |
s->sample &= ~val; |
339 |
break;
|
340 |
|
341 |
case RETU_REG_AFCR:
|
342 |
case RETU_REG_ANTIFR:
|
343 |
case RETU_REG_CALIBR:
|
344 |
|
345 |
case RETU_REG_CCR1:
|
346 |
s->cc[0] = val;
|
347 |
break;
|
348 |
case RETU_REG_CCR2:
|
349 |
s->cc[1] = val;
|
350 |
break;
|
351 |
|
352 |
case RETU_REG_RCTRL_CLR:
|
353 |
case RETU_REG_RCTRL_SET:
|
354 |
/* TODO */
|
355 |
break;
|
356 |
|
357 |
case RETU_REG_WATCHDOG:
|
358 |
if (val == 0 && (s->cc[0] & 2)) |
359 |
qemu_system_shutdown_request(); |
360 |
break;
|
361 |
|
362 |
case RETU_REG_TXCR:
|
363 |
case RETU_REG_AUDTXR:
|
364 |
case RETU_REG_AUDPAR:
|
365 |
case RETU_REG_AUDRXR1:
|
366 |
case RETU_REG_AUDRXR2:
|
367 |
case RETU_REG_SGR1:
|
368 |
case RETU_REG_SCR1:
|
369 |
case RETU_REG_SGR2:
|
370 |
case RETU_REG_SCR2:
|
371 |
/* TODO */
|
372 |
break;
|
373 |
|
374 |
default:
|
375 |
hw_error("%s: bad register %02x\n", __FUNCTION__, reg);
|
376 |
} |
377 |
} |
378 |
|
379 |
static void retu_io(void *opaque, int rw, int reg, uint16_t *val) |
380 |
{ |
381 |
CBusRetu *s = (CBusRetu *) opaque; |
382 |
|
383 |
if (rw)
|
384 |
*val = retu_read(s, reg); |
385 |
else
|
386 |
retu_write(s, reg, *val); |
387 |
} |
388 |
|
389 |
void *retu_init(qemu_irq irq, int vilma) |
390 |
{ |
391 |
CBusRetu *s = (CBusRetu *) qemu_mallocz(sizeof(*s));
|
392 |
|
393 |
s->irq = irq; |
394 |
s->irqen = 0xffff;
|
395 |
s->irqst = 0x0000;
|
396 |
s->status = 0x0020;
|
397 |
s->is_vilma = !!vilma; |
398 |
s->rtc.cal = 0x01;
|
399 |
s->result[retu_adc_bsi] = 0x3c2;
|
400 |
s->result[retu_adc_batt_temp] = 0x0fc;
|
401 |
s->result[retu_adc_chg_volt] = 0x165;
|
402 |
s->result[retu_adc_head_det] = 123;
|
403 |
s->result[retu_adc_hook_det] = 1023;
|
404 |
s->result[retu_adc_rf_gp] = 0x11;
|
405 |
s->result[retu_adc_tx_det] = 0x11;
|
406 |
s->result[retu_adc_batt_volt] = 0x250;
|
407 |
s->result[retu_adc_sens] = 2;
|
408 |
s->result[retu_adc_sens_temp] = 0x11;
|
409 |
s->result[retu_adc_bbatt_volt] = 0x3d0;
|
410 |
s->result[retu_adc_self_temp] = 0x330;
|
411 |
|
412 |
s->cbus.opaque = s; |
413 |
s->cbus.io = retu_io; |
414 |
s->cbus.addr = 1;
|
415 |
|
416 |
return &s->cbus;
|
417 |
} |
418 |
|
419 |
void retu_key_event(void *retu, int state) |
420 |
{ |
421 |
CBusSlave *slave = (CBusSlave *) retu; |
422 |
CBusRetu *s = (CBusRetu *) slave->opaque; |
423 |
|
424 |
s->irqst |= 1 << retu_int_pwr;
|
425 |
retu_interrupt_update(s); |
426 |
|
427 |
if (state)
|
428 |
s->status &= ~(1 << 5); |
429 |
else
|
430 |
s->status |= 1 << 5; |
431 |
} |
432 |
|
433 |
#if 0
|
434 |
static void retu_head_event(void *retu, int state)
|
435 |
{
|
436 |
CBusSlave *slave = (CBusSlave *) retu;
|
437 |
CBusRetu *s = (CBusRetu *) slave->opaque;
|
438 |
|
439 |
if ((s->cc[0] & 0x500) == 0x500) { /* TODO: Which bits? */
|
440 |
/* TODO: reissue the interrupt every 100ms or so. */
|
441 |
s->irqst |= 1 << retu_int_head;
|
442 |
retu_interrupt_update(s);
|
443 |
}
|
444 |
|
445 |
if (state)
|
446 |
s->result[retu_adc_head_det] = 50;
|
447 |
else
|
448 |
s->result[retu_adc_head_det] = 123;
|
449 |
}
|
450 |
|
451 |
static void retu_hook_event(void *retu, int state)
|
452 |
{
|
453 |
CBusSlave *slave = (CBusSlave *) retu;
|
454 |
CBusRetu *s = (CBusRetu *) slave->opaque;
|
455 |
|
456 |
if ((s->cc[0] & 0x500) == 0x500) {
|
457 |
/* TODO: reissue the interrupt every 100ms or so. */
|
458 |
s->irqst |= 1 << retu_int_hook;
|
459 |
retu_interrupt_update(s);
|
460 |
}
|
461 |
|
462 |
if (state)
|
463 |
s->result[retu_adc_hook_det] = 50;
|
464 |
else
|
465 |
s->result[retu_adc_hook_det] = 123;
|
466 |
}
|
467 |
#endif
|
468 |
|
469 |
/* Tahvo/Betty */
|
470 |
typedef struct { |
471 |
uint16_t irqst; |
472 |
uint16_t irqen; |
473 |
uint8_t charger; |
474 |
uint8_t backlight; |
475 |
uint16_t usbr; |
476 |
uint16_t power; |
477 |
|
478 |
int is_betty;
|
479 |
qemu_irq irq; |
480 |
CBusSlave cbus; |
481 |
} CBusTahvo; |
482 |
|
483 |
static void tahvo_interrupt_update(CBusTahvo *s) |
484 |
{ |
485 |
qemu_set_irq(s->irq, s->irqst & ~s->irqen); |
486 |
} |
487 |
|
488 |
#define TAHVO_REG_ASICR 0x00 /* (RO) ASIC ID & revision */ |
489 |
#define TAHVO_REG_IDR 0x01 /* (T) Interrupt ID */ |
490 |
#define TAHVO_REG_IDSR 0x02 /* (RO) Interrupt status */ |
491 |
#define TAHVO_REG_IMR 0x03 /* (RW) Interrupt mask */ |
492 |
#define TAHVO_REG_CHAPWMR 0x04 /* (RW) Charger PWM */ |
493 |
#define TAHVO_REG_LEDPWMR 0x05 /* (RW) LED PWM */ |
494 |
#define TAHVO_REG_USBR 0x06 /* (RW) USB control */ |
495 |
#define TAHVO_REG_RCR 0x07 /* (RW) Some kind of power management */ |
496 |
#define TAHVO_REG_CCR1 0x08 /* (RW) Common control register 1 */ |
497 |
#define TAHVO_REG_CCR2 0x09 /* (RW) Common control register 2 */ |
498 |
#define TAHVO_REG_TESTR1 0x0a /* (RW) Test register 1 */ |
499 |
#define TAHVO_REG_TESTR2 0x0b /* (RW) Test register 2 */ |
500 |
#define TAHVO_REG_NOPR 0x0c /* (RW) Number of periods */ |
501 |
#define TAHVO_REG_FRR 0x0d /* (RO) FR */ |
502 |
|
503 |
static inline uint16_t tahvo_read(CBusTahvo *s, int reg) |
504 |
{ |
505 |
#ifdef DEBUG
|
506 |
printf("TAHVO read at %02x\n", reg);
|
507 |
#endif
|
508 |
|
509 |
switch (reg) {
|
510 |
case TAHVO_REG_ASICR:
|
511 |
return 0x0021 | (s->is_betty ? 0x0b00 : 0x0300); /* 22 in N810 */ |
512 |
|
513 |
case TAHVO_REG_IDR:
|
514 |
case TAHVO_REG_IDSR: /* XXX: what does this do? */ |
515 |
return s->irqst;
|
516 |
|
517 |
case TAHVO_REG_IMR:
|
518 |
return s->irqen;
|
519 |
|
520 |
case TAHVO_REG_CHAPWMR:
|
521 |
return s->charger;
|
522 |
|
523 |
case TAHVO_REG_LEDPWMR:
|
524 |
return s->backlight;
|
525 |
|
526 |
case TAHVO_REG_USBR:
|
527 |
return s->usbr;
|
528 |
|
529 |
case TAHVO_REG_RCR:
|
530 |
return s->power;
|
531 |
|
532 |
case TAHVO_REG_CCR1:
|
533 |
case TAHVO_REG_CCR2:
|
534 |
case TAHVO_REG_TESTR1:
|
535 |
case TAHVO_REG_TESTR2:
|
536 |
case TAHVO_REG_NOPR:
|
537 |
case TAHVO_REG_FRR:
|
538 |
return 0x0000; |
539 |
|
540 |
default:
|
541 |
hw_error("%s: bad register %02x\n", __FUNCTION__, reg);
|
542 |
} |
543 |
} |
544 |
|
545 |
static inline void tahvo_write(CBusTahvo *s, int reg, uint16_t val) |
546 |
{ |
547 |
#ifdef DEBUG
|
548 |
printf("TAHVO write of %04x at %02x\n", val, reg);
|
549 |
#endif
|
550 |
|
551 |
switch (reg) {
|
552 |
case TAHVO_REG_IDR:
|
553 |
s->irqst ^= val; |
554 |
tahvo_interrupt_update(s); |
555 |
break;
|
556 |
|
557 |
case TAHVO_REG_IMR:
|
558 |
s->irqen = val; |
559 |
tahvo_interrupt_update(s); |
560 |
break;
|
561 |
|
562 |
case TAHVO_REG_CHAPWMR:
|
563 |
s->charger = val; |
564 |
break;
|
565 |
|
566 |
case TAHVO_REG_LEDPWMR:
|
567 |
if (s->backlight != (val & 0x7f)) { |
568 |
s->backlight = val & 0x7f;
|
569 |
printf("%s: LCD backlight now at %i / 127\n",
|
570 |
__FUNCTION__, s->backlight); |
571 |
} |
572 |
break;
|
573 |
|
574 |
case TAHVO_REG_USBR:
|
575 |
s->usbr = val; |
576 |
break;
|
577 |
|
578 |
case TAHVO_REG_RCR:
|
579 |
s->power = val; |
580 |
break;
|
581 |
|
582 |
case TAHVO_REG_CCR1:
|
583 |
case TAHVO_REG_CCR2:
|
584 |
case TAHVO_REG_TESTR1:
|
585 |
case TAHVO_REG_TESTR2:
|
586 |
case TAHVO_REG_NOPR:
|
587 |
case TAHVO_REG_FRR:
|
588 |
break;
|
589 |
|
590 |
default:
|
591 |
hw_error("%s: bad register %02x\n", __FUNCTION__, reg);
|
592 |
} |
593 |
} |
594 |
|
595 |
static void tahvo_io(void *opaque, int rw, int reg, uint16_t *val) |
596 |
{ |
597 |
CBusTahvo *s = (CBusTahvo *) opaque; |
598 |
|
599 |
if (rw)
|
600 |
*val = tahvo_read(s, reg); |
601 |
else
|
602 |
tahvo_write(s, reg, *val); |
603 |
} |
604 |
|
605 |
void *tahvo_init(qemu_irq irq, int betty) |
606 |
{ |
607 |
CBusTahvo *s = (CBusTahvo *) qemu_mallocz(sizeof(*s));
|
608 |
|
609 |
s->irq = irq; |
610 |
s->irqen = 0xffff;
|
611 |
s->irqst = 0x0000;
|
612 |
s->is_betty = !!betty; |
613 |
|
614 |
s->cbus.opaque = s; |
615 |
s->cbus.io = tahvo_io; |
616 |
s->cbus.addr = 2;
|
617 |
|
618 |
return &s->cbus;
|
619 |
} |