tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 *
3 * Handle TWL4030 Power initialization
4 *
5 * Copyright (C) 2008 Nokia Corporation
6 * Copyright (C) 2006 Texas Instruments, Inc
7 *
8 * Written by Kalle Jokiniemi
9 * Peter De Schrijver <peter.de-schrijver@nokia.com>
10 * Several fixes by Amit Kucheria <amit.kucheria@verdurent.com>
11 *
12 * This file is subject to the terms and conditions of the GNU General
13 * Public License. See the file "COPYING" in the main directory of this
14 * archive for more details.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 */
25
26#include <linux/module.h>
27#include <linux/pm.h>
28#include <linux/i2c/twl.h>
29#include <linux/platform_device.h>
30#include <linux/of.h>
31#include <linux/of_device.h>
32
33#include <asm/mach-types.h>
34
35static u8 twl4030_start_script_address = 0x2b;
36
37/* Register bits for P1, P2 and P3_SW_EVENTS */
38#define PWR_STOPON_PRWON BIT(6)
39#define PWR_STOPON_SYSEN BIT(5)
40#define PWR_ENABLE_WARMRESET BIT(4)
41#define PWR_LVL_WAKEUP BIT(3)
42#define PWR_DEVACT BIT(2)
43#define PWR_DEVSLP BIT(1)
44#define PWR_DEVOFF BIT(0)
45
46/* Register bits for CFG_P1_TRANSITION (also for P2 and P3) */
47#define STARTON_SWBUG BIT(7) /* Start on watchdog */
48#define STARTON_VBUS BIT(5) /* Start on VBUS */
49#define STARTON_VBAT BIT(4) /* Start on battery insert */
50#define STARTON_RTC BIT(3) /* Start on RTC */
51#define STARTON_USB BIT(2) /* Start on USB host */
52#define STARTON_CHG BIT(1) /* Start on charger */
53#define STARTON_PWON BIT(0) /* Start on PWRON button */
54
55#define SEQ_OFFSYNC (1 << 0)
56
57#define PHY_TO_OFF_PM_MASTER(p) (p - 0x36)
58#define PHY_TO_OFF_PM_RECEIVER(p) (p - 0x5b)
59
60/* resource - hfclk */
61#define R_HFCLKOUT_DEV_GRP PHY_TO_OFF_PM_RECEIVER(0xe6)
62
63/* PM events */
64#define R_P1_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x46)
65#define R_P2_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x47)
66#define R_P3_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x48)
67#define R_CFG_P1_TRANSITION PHY_TO_OFF_PM_MASTER(0x36)
68#define R_CFG_P2_TRANSITION PHY_TO_OFF_PM_MASTER(0x37)
69#define R_CFG_P3_TRANSITION PHY_TO_OFF_PM_MASTER(0x38)
70
71#define END_OF_SCRIPT 0x3f
72
73#define R_SEQ_ADD_A2S PHY_TO_OFF_PM_MASTER(0x55)
74#define R_SEQ_ADD_S2A12 PHY_TO_OFF_PM_MASTER(0x56)
75#define R_SEQ_ADD_S2A3 PHY_TO_OFF_PM_MASTER(0x57)
76#define R_SEQ_ADD_WARM PHY_TO_OFF_PM_MASTER(0x58)
77#define R_MEMORY_ADDRESS PHY_TO_OFF_PM_MASTER(0x59)
78#define R_MEMORY_DATA PHY_TO_OFF_PM_MASTER(0x5a)
79
80/* resource configuration registers
81 <RESOURCE>_DEV_GRP at address 'n+0'
82 <RESOURCE>_TYPE at address 'n+1'
83 <RESOURCE>_REMAP at address 'n+2'
84 <RESOURCE>_DEDICATED at address 'n+3'
85*/
86#define DEV_GRP_OFFSET 0
87#define TYPE_OFFSET 1
88#define REMAP_OFFSET 2
89#define DEDICATED_OFFSET 3
90
91/* Bit positions in the registers */
92
93/* <RESOURCE>_DEV_GRP */
94#define DEV_GRP_SHIFT 5
95#define DEV_GRP_MASK (7 << DEV_GRP_SHIFT)
96
97/* <RESOURCE>_TYPE */
98#define TYPE_SHIFT 0
99#define TYPE_MASK (7 << TYPE_SHIFT)
100#define TYPE2_SHIFT 3
101#define TYPE2_MASK (3 << TYPE2_SHIFT)
102
103/* <RESOURCE>_REMAP */
104#define SLEEP_STATE_SHIFT 0
105#define SLEEP_STATE_MASK (0xf << SLEEP_STATE_SHIFT)
106#define OFF_STATE_SHIFT 4
107#define OFF_STATE_MASK (0xf << OFF_STATE_SHIFT)
108
109static u8 res_config_addrs[] = {
110 [RES_VAUX1] = 0x17,
111 [RES_VAUX2] = 0x1b,
112 [RES_VAUX3] = 0x1f,
113 [RES_VAUX4] = 0x23,
114 [RES_VMMC1] = 0x27,
115 [RES_VMMC2] = 0x2b,
116 [RES_VPLL1] = 0x2f,
117 [RES_VPLL2] = 0x33,
118 [RES_VSIM] = 0x37,
119 [RES_VDAC] = 0x3b,
120 [RES_VINTANA1] = 0x3f,
121 [RES_VINTANA2] = 0x43,
122 [RES_VINTDIG] = 0x47,
123 [RES_VIO] = 0x4b,
124 [RES_VDD1] = 0x55,
125 [RES_VDD2] = 0x63,
126 [RES_VUSB_1V5] = 0x71,
127 [RES_VUSB_1V8] = 0x74,
128 [RES_VUSB_3V1] = 0x77,
129 [RES_VUSBCP] = 0x7a,
130 [RES_REGEN] = 0x7f,
131 [RES_NRES_PWRON] = 0x82,
132 [RES_CLKEN] = 0x85,
133 [RES_SYSEN] = 0x88,
134 [RES_HFCLKOUT] = 0x8b,
135 [RES_32KCLKOUT] = 0x8e,
136 [RES_RESET] = 0x91,
137 [RES_MAIN_REF] = 0x94,
138};
139
140/*
141 * Usable values for .remap_sleep and .remap_off
142 * Based on table "5.3.3 Resource Operating modes"
143 */
144enum {
145 TWL_REMAP_OFF = 0,
146 TWL_REMAP_SLEEP = 8,
147 TWL_REMAP_ACTIVE = 9,
148};
149
150/*
151 * Macros to configure the PM register states for various resources.
152 * Note that we can make MSG_SINGULAR etc private to this driver once
153 * omap3 has been made DT only.
154 */
155#define TWL_DFLT_DELAY 2 /* typically 2 32 KiHz cycles */
156#define TWL_DEV_GRP_P123 (DEV_GRP_P1 | DEV_GRP_P2 | DEV_GRP_P3)
157#define TWL_RESOURCE_SET(res, state) \
158 { MSG_SINGULAR(DEV_GRP_NULL, (res), (state)), TWL_DFLT_DELAY }
159#define TWL_RESOURCE_ON(res) TWL_RESOURCE_SET(res, RES_STATE_ACTIVE)
160#define TWL_RESOURCE_OFF(res) TWL_RESOURCE_SET(res, RES_STATE_OFF)
161#define TWL_RESOURCE_RESET(res) TWL_RESOURCE_SET(res, RES_STATE_WRST)
162/*
163 * It seems that type1 and type2 is just the resource init order
164 * number for the type1 and type2 group.
165 */
166#define TWL_RESOURCE_SET_ACTIVE(res, state) \
167 { MSG_SINGULAR(DEV_GRP_NULL, (res), RES_STATE_ACTIVE), (state) }
168#define TWL_RESOURCE_GROUP_RESET(group, type1, type2) \
169 { MSG_BROADCAST(DEV_GRP_NULL, (group), (type1), (type2), \
170 RES_STATE_WRST), TWL_DFLT_DELAY }
171#define TWL_RESOURCE_GROUP_SLEEP(group, type, type2) \
172 { MSG_BROADCAST(DEV_GRP_NULL, (group), (type), (type2), \
173 RES_STATE_SLEEP), TWL_DFLT_DELAY }
174#define TWL_RESOURCE_GROUP_ACTIVE(group, type, type2) \
175 { MSG_BROADCAST(DEV_GRP_NULL, (group), (type), (type2), \
176 RES_STATE_ACTIVE), TWL_DFLT_DELAY }
177#define TWL_REMAP_SLEEP(res, devgrp, typ, typ2) \
178 { .resource = (res), .devgroup = (devgrp), \
179 .type = (typ), .type2 = (typ2), \
180 .remap_off = TWL_REMAP_OFF, \
181 .remap_sleep = TWL_REMAP_SLEEP, }
182#define TWL_REMAP_OFF(res, devgrp, typ, typ2) \
183 { .resource = (res), .devgroup = (devgrp), \
184 .type = (typ), .type2 = (typ2), \
185 .remap_off = TWL_REMAP_OFF, .remap_sleep = TWL_REMAP_OFF, }
186
187static int twl4030_write_script_byte(u8 address, u8 byte)
188{
189 int err;
190
191 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_MEMORY_ADDRESS);
192 if (err)
193 goto out;
194 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, byte, R_MEMORY_DATA);
195out:
196 return err;
197}
198
199static int twl4030_write_script_ins(u8 address, u16 pmb_message,
200 u8 delay, u8 next)
201{
202 int err;
203
204 address *= 4;
205 err = twl4030_write_script_byte(address++, pmb_message >> 8);
206 if (err)
207 goto out;
208 err = twl4030_write_script_byte(address++, pmb_message & 0xff);
209 if (err)
210 goto out;
211 err = twl4030_write_script_byte(address++, delay);
212 if (err)
213 goto out;
214 err = twl4030_write_script_byte(address++, next);
215out:
216 return err;
217}
218
219static int twl4030_write_script(u8 address, struct twl4030_ins *script,
220 int len)
221{
222 int err = -EINVAL;
223
224 for (; len; len--, address++, script++) {
225 if (len == 1) {
226 err = twl4030_write_script_ins(address,
227 script->pmb_message,
228 script->delay,
229 END_OF_SCRIPT);
230 if (err)
231 break;
232 } else {
233 err = twl4030_write_script_ins(address,
234 script->pmb_message,
235 script->delay,
236 address + 1);
237 if (err)
238 break;
239 }
240 }
241 return err;
242}
243
244static int twl4030_config_wakeup3_sequence(u8 address)
245{
246 int err;
247 u8 data;
248
249 /* Set SLEEP to ACTIVE SEQ address for P3 */
250 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_S2A3);
251 if (err)
252 goto out;
253
254 /* P3 LVL_WAKEUP should be on LEVEL */
255 err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P3_SW_EVENTS);
256 if (err)
257 goto out;
258 data |= PWR_LVL_WAKEUP;
259 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P3_SW_EVENTS);
260out:
261 if (err)
262 pr_err("TWL4030 wakeup sequence for P3 config error\n");
263 return err;
264}
265
266static int
267twl4030_config_wakeup12_sequence(const struct twl4030_power_data *pdata,
268 u8 address)
269{
270 int err = 0;
271 u8 data;
272
273 /* Set SLEEP to ACTIVE SEQ address for P1 and P2 */
274 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_S2A12);
275 if (err)
276 goto out;
277
278 /* P1/P2 LVL_WAKEUP should be on LEVEL */
279 err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P1_SW_EVENTS);
280 if (err)
281 goto out;
282
283 data |= PWR_LVL_WAKEUP;
284 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P1_SW_EVENTS);
285 if (err)
286 goto out;
287
288 err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P2_SW_EVENTS);
289 if (err)
290 goto out;
291
292 data |= PWR_LVL_WAKEUP;
293 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P2_SW_EVENTS);
294 if (err)
295 goto out;
296
297 if (pdata->ac_charger_quirk || machine_is_omap_3430sdp() ||
298 machine_is_omap_ldp()) {
299 /* Disabling AC charger effect on sleep-active transitions */
300 err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data,
301 R_CFG_P1_TRANSITION);
302 if (err)
303 goto out;
304 data &= ~STARTON_CHG;
305 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data,
306 R_CFG_P1_TRANSITION);
307 if (err)
308 goto out;
309 }
310
311out:
312 if (err)
313 pr_err("TWL4030 wakeup sequence for P1 and P2" \
314 "config error\n");
315 return err;
316}
317
318static int twl4030_config_sleep_sequence(u8 address)
319{
320 int err;
321
322 /* Set ACTIVE to SLEEP SEQ address in T2 memory*/
323 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_A2S);
324
325 if (err)
326 pr_err("TWL4030 sleep sequence config error\n");
327
328 return err;
329}
330
331static int twl4030_config_warmreset_sequence(u8 address)
332{
333 int err;
334 u8 rd_data;
335
336 /* Set WARM RESET SEQ address for P1 */
337 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_WARM);
338 if (err)
339 goto out;
340
341 /* P1/P2/P3 enable WARMRESET */
342 err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P1_SW_EVENTS);
343 if (err)
344 goto out;
345
346 rd_data |= PWR_ENABLE_WARMRESET;
347 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P1_SW_EVENTS);
348 if (err)
349 goto out;
350
351 err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P2_SW_EVENTS);
352 if (err)
353 goto out;
354
355 rd_data |= PWR_ENABLE_WARMRESET;
356 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P2_SW_EVENTS);
357 if (err)
358 goto out;
359
360 err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P3_SW_EVENTS);
361 if (err)
362 goto out;
363
364 rd_data |= PWR_ENABLE_WARMRESET;
365 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P3_SW_EVENTS);
366out:
367 if (err)
368 pr_err("TWL4030 warmreset seq config error\n");
369 return err;
370}
371
372static int twl4030_configure_resource(struct twl4030_resconfig *rconfig)
373{
374 int rconfig_addr;
375 int err;
376 u8 type;
377 u8 grp;
378 u8 remap;
379
380 if (rconfig->resource > TOTAL_RESOURCES) {
381 pr_err("TWL4030 Resource %d does not exist\n",
382 rconfig->resource);
383 return -EINVAL;
384 }
385
386 rconfig_addr = res_config_addrs[rconfig->resource];
387
388 /* Set resource group */
389 err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &grp,
390 rconfig_addr + DEV_GRP_OFFSET);
391 if (err) {
392 pr_err("TWL4030 Resource %d group could not be read\n",
393 rconfig->resource);
394 return err;
395 }
396
397 if (rconfig->devgroup != TWL4030_RESCONFIG_UNDEF) {
398 grp &= ~DEV_GRP_MASK;
399 grp |= rconfig->devgroup << DEV_GRP_SHIFT;
400 err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER,
401 grp, rconfig_addr + DEV_GRP_OFFSET);
402 if (err < 0) {
403 pr_err("TWL4030 failed to program devgroup\n");
404 return err;
405 }
406 }
407
408 /* Set resource types */
409 err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &type,
410 rconfig_addr + TYPE_OFFSET);
411 if (err < 0) {
412 pr_err("TWL4030 Resource %d type could not be read\n",
413 rconfig->resource);
414 return err;
415 }
416
417 if (rconfig->type != TWL4030_RESCONFIG_UNDEF) {
418 type &= ~TYPE_MASK;
419 type |= rconfig->type << TYPE_SHIFT;
420 }
421
422 if (rconfig->type2 != TWL4030_RESCONFIG_UNDEF) {
423 type &= ~TYPE2_MASK;
424 type |= rconfig->type2 << TYPE2_SHIFT;
425 }
426
427 err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER,
428 type, rconfig_addr + TYPE_OFFSET);
429 if (err < 0) {
430 pr_err("TWL4030 failed to program resource type\n");
431 return err;
432 }
433
434 /* Set remap states */
435 err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &remap,
436 rconfig_addr + REMAP_OFFSET);
437 if (err < 0) {
438 pr_err("TWL4030 Resource %d remap could not be read\n",
439 rconfig->resource);
440 return err;
441 }
442
443 if (rconfig->remap_off != TWL4030_RESCONFIG_UNDEF) {
444 remap &= ~OFF_STATE_MASK;
445 remap |= rconfig->remap_off << OFF_STATE_SHIFT;
446 }
447
448 if (rconfig->remap_sleep != TWL4030_RESCONFIG_UNDEF) {
449 remap &= ~SLEEP_STATE_MASK;
450 remap |= rconfig->remap_sleep << SLEEP_STATE_SHIFT;
451 }
452
453 err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER,
454 remap,
455 rconfig_addr + REMAP_OFFSET);
456 if (err < 0) {
457 pr_err("TWL4030 failed to program remap\n");
458 return err;
459 }
460
461 return 0;
462}
463
464static int load_twl4030_script(const struct twl4030_power_data *pdata,
465 struct twl4030_script *tscript,
466 u8 address)
467{
468 int err;
469 static int order;
470
471 /* Make sure the script isn't going beyond last valid address (0x3f) */
472 if ((address + tscript->size) > END_OF_SCRIPT) {
473 pr_err("TWL4030 scripts too big error\n");
474 return -EINVAL;
475 }
476
477 err = twl4030_write_script(address, tscript->script, tscript->size);
478 if (err)
479 goto out;
480
481 if (tscript->flags & TWL4030_WRST_SCRIPT) {
482 err = twl4030_config_warmreset_sequence(address);
483 if (err)
484 goto out;
485 }
486 if (tscript->flags & TWL4030_WAKEUP12_SCRIPT) {
487 /* Reset any existing sleep script to avoid hangs on reboot */
488 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
489 R_SEQ_ADD_A2S);
490 if (err)
491 goto out;
492
493 err = twl4030_config_wakeup12_sequence(pdata, address);
494 if (err)
495 goto out;
496 order = 1;
497 }
498 if (tscript->flags & TWL4030_WAKEUP3_SCRIPT) {
499 err = twl4030_config_wakeup3_sequence(address);
500 if (err)
501 goto out;
502 }
503 if (tscript->flags & TWL4030_SLEEP_SCRIPT) {
504 if (!order)
505 pr_warning("TWL4030: Bad order of scripts (sleep "\
506 "script before wakeup) Leads to boot"\
507 "failure on some boards\n");
508 err = twl4030_config_sleep_sequence(address);
509 }
510out:
511 return err;
512}
513
514int twl4030_remove_script(u8 flags)
515{
516 int err = 0;
517
518 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
519 TWL4030_PM_MASTER_PROTECT_KEY);
520 if (err) {
521 pr_err("twl4030: unable to unlock PROTECT_KEY\n");
522 return err;
523 }
524
525 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2,
526 TWL4030_PM_MASTER_PROTECT_KEY);
527 if (err) {
528 pr_err("twl4030: unable to unlock PROTECT_KEY\n");
529 return err;
530 }
531
532 if (flags & TWL4030_WRST_SCRIPT) {
533 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
534 R_SEQ_ADD_WARM);
535 if (err)
536 return err;
537 }
538 if (flags & TWL4030_WAKEUP12_SCRIPT) {
539 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
540 R_SEQ_ADD_S2A12);
541 if (err)
542 return err;
543 }
544 if (flags & TWL4030_WAKEUP3_SCRIPT) {
545 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
546 R_SEQ_ADD_S2A3);
547 if (err)
548 return err;
549 }
550 if (flags & TWL4030_SLEEP_SCRIPT) {
551 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
552 R_SEQ_ADD_A2S);
553 if (err)
554 return err;
555 }
556
557 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
558 TWL4030_PM_MASTER_PROTECT_KEY);
559 if (err)
560 pr_err("TWL4030 Unable to relock registers\n");
561
562 return err;
563}
564
565static int
566twl4030_power_configure_scripts(const struct twl4030_power_data *pdata)
567{
568 int err;
569 int i;
570 u8 address = twl4030_start_script_address;
571
572 for (i = 0; i < pdata->num; i++) {
573 err = load_twl4030_script(pdata, pdata->scripts[i], address);
574 if (err)
575 return err;
576 address += pdata->scripts[i]->size;
577 }
578
579 return 0;
580}
581
582static void twl4030_patch_rconfig(struct twl4030_resconfig *common,
583 struct twl4030_resconfig *board)
584{
585 while (common->resource) {
586 struct twl4030_resconfig *b = board;
587
588 while (b->resource) {
589 if (b->resource == common->resource) {
590 *common = *b;
591 break;
592 }
593 b++;
594 }
595 common++;
596 }
597}
598
599static int
600twl4030_power_configure_resources(const struct twl4030_power_data *pdata)
601{
602 struct twl4030_resconfig *resconfig = pdata->resource_config;
603 struct twl4030_resconfig *boardconf = pdata->board_config;
604 int err;
605
606 if (resconfig) {
607 if (boardconf)
608 twl4030_patch_rconfig(resconfig, boardconf);
609
610 while (resconfig->resource) {
611 err = twl4030_configure_resource(resconfig);
612 if (err)
613 return err;
614 resconfig++;
615 }
616 }
617
618 return 0;
619}
620
621static int twl4030_starton_mask_and_set(u8 bitmask, u8 bitvalues)
622{
623 u8 regs[3] = { TWL4030_PM_MASTER_CFG_P1_TRANSITION,
624 TWL4030_PM_MASTER_CFG_P2_TRANSITION,
625 TWL4030_PM_MASTER_CFG_P3_TRANSITION, };
626 u8 val;
627 int i, err;
628
629 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
630 TWL4030_PM_MASTER_PROTECT_KEY);
631 if (err)
632 goto relock;
633 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
634 TWL4030_PM_MASTER_KEY_CFG2,
635 TWL4030_PM_MASTER_PROTECT_KEY);
636 if (err)
637 goto relock;
638
639 for (i = 0; i < sizeof(regs); i++) {
640 err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER,
641 &val, regs[i]);
642 if (err)
643 break;
644 val = (~bitmask & val) | (bitmask & bitvalues);
645 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
646 val, regs[i]);
647 if (err)
648 break;
649 }
650
651 if (err)
652 pr_err("TWL4030 Register access failed: %i\n", err);
653
654relock:
655 return twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
656 TWL4030_PM_MASTER_PROTECT_KEY);
657}
658
659/*
660 * In master mode, start the power off sequence.
661 * After a successful execution, TWL shuts down the power to the SoC
662 * and all peripherals connected to it.
663 */
664void twl4030_power_off(void)
665{
666 int err;
667
668 /* Disable start on charger or VBUS as it can break poweroff */
669 err = twl4030_starton_mask_and_set(STARTON_VBUS | STARTON_CHG, 0);
670 if (err)
671 pr_err("TWL4030 Unable to configure start-up\n");
672
673 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, PWR_DEVOFF,
674 TWL4030_PM_MASTER_P1_SW_EVENTS);
675 if (err)
676 pr_err("TWL4030 Unable to power off\n");
677}
678
679static bool twl4030_power_use_poweroff(const struct twl4030_power_data *pdata,
680 struct device_node *node)
681{
682 if (pdata && pdata->use_poweroff)
683 return true;
684
685 if (of_property_read_bool(node, "ti,system-power-controller"))
686 return true;
687
688 if (of_property_read_bool(node, "ti,use_poweroff"))
689 return true;
690
691 return false;
692}
693
694#ifdef CONFIG_OF
695
696/* Generic warm reset configuration for omap3 */
697
698static struct twl4030_ins omap3_wrst_seq[] = {
699 TWL_RESOURCE_OFF(RES_NRES_PWRON),
700 TWL_RESOURCE_OFF(RES_RESET),
701 TWL_RESOURCE_RESET(RES_MAIN_REF),
702 TWL_RESOURCE_GROUP_RESET(RES_GRP_ALL, RES_TYPE_R0, RES_TYPE2_R2),
703 TWL_RESOURCE_RESET(RES_VUSB_3V1),
704 TWL_RESOURCE_GROUP_RESET(RES_GRP_ALL, RES_TYPE_R0, RES_TYPE2_R1),
705 TWL_RESOURCE_GROUP_RESET(RES_GRP_RC, RES_TYPE_ALL, RES_TYPE2_R0),
706 TWL_RESOURCE_ON(RES_RESET),
707 TWL_RESOURCE_ON(RES_NRES_PWRON),
708};
709
710static struct twl4030_script omap3_wrst_script = {
711 .script = omap3_wrst_seq,
712 .size = ARRAY_SIZE(omap3_wrst_seq),
713 .flags = TWL4030_WRST_SCRIPT,
714};
715
716static struct twl4030_script *omap3_reset_scripts[] = {
717 &omap3_wrst_script,
718};
719
720static struct twl4030_resconfig omap3_rconfig[] = {
721 TWL_REMAP_SLEEP(RES_HFCLKOUT, DEV_GRP_P3, -1, -1),
722 TWL_REMAP_SLEEP(RES_VDD1, DEV_GRP_P1, -1, -1),
723 TWL_REMAP_SLEEP(RES_VDD2, DEV_GRP_P1, -1, -1),
724 { 0, 0 },
725};
726
727static struct twl4030_power_data omap3_reset = {
728 .scripts = omap3_reset_scripts,
729 .num = ARRAY_SIZE(omap3_reset_scripts),
730 .resource_config = omap3_rconfig,
731};
732
733/* Recommended generic default idle configuration for off-idle */
734
735/* Broadcast message to put res to sleep */
736static struct twl4030_ins omap3_idle_sleep_on_seq[] = {
737 TWL_RESOURCE_GROUP_SLEEP(RES_GRP_ALL, RES_TYPE_ALL, 0),
738};
739
740static struct twl4030_script omap3_idle_sleep_on_script = {
741 .script = omap3_idle_sleep_on_seq,
742 .size = ARRAY_SIZE(omap3_idle_sleep_on_seq),
743 .flags = TWL4030_SLEEP_SCRIPT,
744};
745
746/* Broadcast message to put res to active */
747static struct twl4030_ins omap3_idle_wakeup_p12_seq[] = {
748 TWL_RESOURCE_GROUP_ACTIVE(RES_GRP_ALL, RES_TYPE_ALL, 0),
749};
750
751static struct twl4030_script omap3_idle_wakeup_p12_script = {
752 .script = omap3_idle_wakeup_p12_seq,
753 .size = ARRAY_SIZE(omap3_idle_wakeup_p12_seq),
754 .flags = TWL4030_WAKEUP12_SCRIPT,
755};
756
757/* Broadcast message to put res to active */
758static struct twl4030_ins omap3_idle_wakeup_p3_seq[] = {
759 TWL_RESOURCE_SET_ACTIVE(RES_CLKEN, 0x37),
760 TWL_RESOURCE_GROUP_ACTIVE(RES_GRP_ALL, RES_TYPE_ALL, 0),
761};
762
763static struct twl4030_script omap3_idle_wakeup_p3_script = {
764 .script = omap3_idle_wakeup_p3_seq,
765 .size = ARRAY_SIZE(omap3_idle_wakeup_p3_seq),
766 .flags = TWL4030_WAKEUP3_SCRIPT,
767};
768
769static struct twl4030_script *omap3_idle_scripts[] = {
770 &omap3_idle_wakeup_p12_script,
771 &omap3_idle_wakeup_p3_script,
772 &omap3_wrst_script,
773 &omap3_idle_sleep_on_script,
774};
775
776/*
777 * Recommended configuration based on "Recommended Sleep
778 * Sequences for the Zoom Platform":
779 * http://omappedia.com/wiki/File:Recommended_Sleep_Sequences_Zoom.pdf
780 * Note that the type1 and type2 seem to be just the init order number
781 * for type1 and type2 groups as specified in the document mentioned
782 * above.
783 */
784static struct twl4030_resconfig omap3_idle_rconfig[] = {
785 TWL_REMAP_SLEEP(RES_VAUX1, TWL4030_RESCONFIG_UNDEF, 0, 0),
786 TWL_REMAP_SLEEP(RES_VAUX2, TWL4030_RESCONFIG_UNDEF, 0, 0),
787 TWL_REMAP_SLEEP(RES_VAUX3, TWL4030_RESCONFIG_UNDEF, 0, 0),
788 TWL_REMAP_SLEEP(RES_VAUX4, TWL4030_RESCONFIG_UNDEF, 0, 0),
789 TWL_REMAP_SLEEP(RES_VMMC1, TWL4030_RESCONFIG_UNDEF, 0, 0),
790 TWL_REMAP_SLEEP(RES_VMMC2, TWL4030_RESCONFIG_UNDEF, 0, 0),
791 TWL_REMAP_OFF(RES_VPLL1, DEV_GRP_P1, 3, 1),
792 TWL_REMAP_SLEEP(RES_VPLL2, DEV_GRP_P1, 0, 0),
793 TWL_REMAP_SLEEP(RES_VSIM, TWL4030_RESCONFIG_UNDEF, 0, 0),
794 TWL_REMAP_SLEEP(RES_VDAC, TWL4030_RESCONFIG_UNDEF, 0, 0),
795 TWL_REMAP_SLEEP(RES_VINTANA1, TWL_DEV_GRP_P123, 1, 2),
796 TWL_REMAP_SLEEP(RES_VINTANA2, TWL_DEV_GRP_P123, 0, 2),
797 TWL_REMAP_SLEEP(RES_VINTDIG, TWL_DEV_GRP_P123, 1, 2),
798 TWL_REMAP_SLEEP(RES_VIO, TWL_DEV_GRP_P123, 2, 2),
799 TWL_REMAP_OFF(RES_VDD1, DEV_GRP_P1, 4, 1),
800 TWL_REMAP_OFF(RES_VDD2, DEV_GRP_P1, 3, 1),
801 TWL_REMAP_SLEEP(RES_VUSB_1V5, TWL4030_RESCONFIG_UNDEF, 0, 0),
802 TWL_REMAP_SLEEP(RES_VUSB_1V8, TWL4030_RESCONFIG_UNDEF, 0, 0),
803 TWL_REMAP_SLEEP(RES_VUSB_3V1, TWL_DEV_GRP_P123, 0, 0),
804 /* Resource #20 USB charge pump skipped */
805 TWL_REMAP_SLEEP(RES_REGEN, TWL_DEV_GRP_P123, 2, 1),
806 TWL_REMAP_SLEEP(RES_NRES_PWRON, TWL_DEV_GRP_P123, 0, 1),
807 TWL_REMAP_SLEEP(RES_CLKEN, TWL_DEV_GRP_P123, 3, 2),
808 TWL_REMAP_SLEEP(RES_SYSEN, TWL_DEV_GRP_P123, 6, 1),
809 TWL_REMAP_SLEEP(RES_HFCLKOUT, DEV_GRP_P3, 0, 2),
810 TWL_REMAP_SLEEP(RES_32KCLKOUT, TWL_DEV_GRP_P123, 0, 0),
811 TWL_REMAP_SLEEP(RES_RESET, TWL_DEV_GRP_P123, 6, 0),
812 TWL_REMAP_SLEEP(RES_MAIN_REF, TWL_DEV_GRP_P123, 0, 0),
813 { /* Terminator */ },
814};
815
816static struct twl4030_power_data omap3_idle = {
817 .scripts = omap3_idle_scripts,
818 .num = ARRAY_SIZE(omap3_idle_scripts),
819 .resource_config = omap3_idle_rconfig,
820};
821
822/* Disable 32 KiHz oscillator during idle */
823static struct twl4030_resconfig osc_off_rconfig[] = {
824 TWL_REMAP_OFF(RES_CLKEN, DEV_GRP_P1 | DEV_GRP_P3, 3, 2),
825 { /* Terminator */ },
826};
827
828static struct twl4030_power_data osc_off_idle = {
829 .scripts = omap3_idle_scripts,
830 .num = ARRAY_SIZE(omap3_idle_scripts),
831 .resource_config = omap3_idle_rconfig,
832 .board_config = osc_off_rconfig,
833};
834
835static struct twl4030_power_data omap3_idle_ac_quirk = {
836 .scripts = omap3_idle_scripts,
837 .num = ARRAY_SIZE(omap3_idle_scripts),
838 .resource_config = omap3_idle_rconfig,
839 .ac_charger_quirk = true,
840};
841
842static struct twl4030_power_data omap3_idle_ac_quirk_osc_off = {
843 .scripts = omap3_idle_scripts,
844 .num = ARRAY_SIZE(omap3_idle_scripts),
845 .resource_config = omap3_idle_rconfig,
846 .board_config = osc_off_rconfig,
847 .ac_charger_quirk = true,
848};
849
850static const struct of_device_id twl4030_power_of_match[] = {
851 {
852 .compatible = "ti,twl4030-power",
853 },
854 {
855 .compatible = "ti,twl4030-power-reset",
856 .data = &omap3_reset,
857 },
858 {
859 .compatible = "ti,twl4030-power-idle",
860 .data = &omap3_idle,
861 },
862 {
863 .compatible = "ti,twl4030-power-idle-osc-off",
864 .data = &osc_off_idle,
865 },
866 {
867 .compatible = "ti,twl4030-power-omap3-sdp",
868 .data = &omap3_idle_ac_quirk,
869 },
870 {
871 .compatible = "ti,twl4030-power-omap3-ldp",
872 .data = &omap3_idle_ac_quirk_osc_off,
873 },
874 {
875 .compatible = "ti,twl4030-power-omap3-evm",
876 .data = &omap3_idle_ac_quirk,
877 },
878 { },
879};
880MODULE_DEVICE_TABLE(of, twl4030_power_of_match);
881#endif /* CONFIG_OF */
882
883static int twl4030_power_probe(struct platform_device *pdev)
884{
885 const struct twl4030_power_data *pdata = dev_get_platdata(&pdev->dev);
886 struct device_node *node = pdev->dev.of_node;
887 const struct of_device_id *match;
888 int err = 0;
889 int err2 = 0;
890 u8 val;
891
892 if (!pdata && !node) {
893 dev_err(&pdev->dev, "Platform data is missing\n");
894 return -EINVAL;
895 }
896
897 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
898 TWL4030_PM_MASTER_PROTECT_KEY);
899 err |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
900 TWL4030_PM_MASTER_KEY_CFG2,
901 TWL4030_PM_MASTER_PROTECT_KEY);
902
903 if (err) {
904 pr_err("TWL4030 Unable to unlock registers\n");
905 return err;
906 }
907
908 match = of_match_device(of_match_ptr(twl4030_power_of_match),
909 &pdev->dev);
910 if (match && match->data)
911 pdata = match->data;
912
913 if (pdata) {
914 err = twl4030_power_configure_scripts(pdata);
915 if (err) {
916 pr_err("TWL4030 failed to load scripts\n");
917 goto relock;
918 }
919 err = twl4030_power_configure_resources(pdata);
920 if (err) {
921 pr_err("TWL4030 failed to configure resource\n");
922 goto relock;
923 }
924 }
925
926 /* Board has to be wired properly to use this feature */
927 if (twl4030_power_use_poweroff(pdata, node) && !pm_power_off) {
928 /* Default for SEQ_OFFSYNC is set, lets ensure this */
929 err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val,
930 TWL4030_PM_MASTER_CFG_P123_TRANSITION);
931 if (err) {
932 pr_warning("TWL4030 Unable to read registers\n");
933
934 } else if (!(val & SEQ_OFFSYNC)) {
935 val |= SEQ_OFFSYNC;
936 err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val,
937 TWL4030_PM_MASTER_CFG_P123_TRANSITION);
938 if (err) {
939 pr_err("TWL4030 Unable to setup SEQ_OFFSYNC\n");
940 goto relock;
941 }
942 }
943
944 pm_power_off = twl4030_power_off;
945 }
946
947relock:
948 err2 = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
949 TWL4030_PM_MASTER_PROTECT_KEY);
950 if (err2) {
951 pr_err("TWL4030 Unable to relock registers\n");
952 return err2;
953 }
954
955 return err;
956}
957
958static int twl4030_power_remove(struct platform_device *pdev)
959{
960 return 0;
961}
962
963static struct platform_driver twl4030_power_driver = {
964 .driver = {
965 .name = "twl4030_power",
966 .of_match_table = of_match_ptr(twl4030_power_of_match),
967 },
968 .probe = twl4030_power_probe,
969 .remove = twl4030_power_remove,
970};
971
972module_platform_driver(twl4030_power_driver);
973
974MODULE_AUTHOR("Nokia Corporation");
975MODULE_AUTHOR("Texas Instruments, Inc.");
976MODULE_DESCRIPTION("Power management for TWL4030");
977MODULE_LICENSE("GPL");
978MODULE_ALIAS("platform:twl4030_power");