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ebf0bd36 AK |
1 | /* |
2 | * linux/drivers/i2c/chips/twl4030-power.c | |
3 | * | |
4 | * Handle TWL4030 Power initialization | |
5 | * | |
6 | * Copyright (C) 2008 Nokia Corporation | |
7 | * Copyright (C) 2006 Texas Instruments, Inc | |
8 | * | |
9 | * Written by Kalle Jokiniemi | |
10 | * Peter De Schrijver <peter.de-schrijver@nokia.com> | |
11 | * Several fixes by Amit Kucheria <amit.kucheria@verdurent.com> | |
12 | * | |
13 | * This file is subject to the terms and conditions of the GNU General | |
14 | * Public License. See the file "COPYING" in the main directory of this | |
15 | * archive for more details. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
25 | */ | |
26 | ||
27 | #include <linux/module.h> | |
28 | #include <linux/pm.h> | |
b07682b6 | 29 | #include <linux/i2c/twl.h> |
ebf0bd36 AK |
30 | #include <linux/platform_device.h> |
31 | ||
32 | #include <asm/mach-types.h> | |
33 | ||
34 | static u8 twl4030_start_script_address = 0x2b; | |
35 | ||
36 | #define PWR_P1_SW_EVENTS 0x10 | |
26cc3ab9 IG |
37 | #define PWR_DEVOFF (1 << 0) |
38 | #define SEQ_OFFSYNC (1 << 0) | |
ebf0bd36 AK |
39 | |
40 | #define PHY_TO_OFF_PM_MASTER(p) (p - 0x36) | |
41 | #define PHY_TO_OFF_PM_RECEIVER(p) (p - 0x5b) | |
42 | ||
43 | /* resource - hfclk */ | |
44 | #define R_HFCLKOUT_DEV_GRP PHY_TO_OFF_PM_RECEIVER(0xe6) | |
45 | ||
46 | /* PM events */ | |
47 | #define R_P1_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x46) | |
48 | #define R_P2_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x47) | |
49 | #define R_P3_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x48) | |
50 | #define R_CFG_P1_TRANSITION PHY_TO_OFF_PM_MASTER(0x36) | |
51 | #define R_CFG_P2_TRANSITION PHY_TO_OFF_PM_MASTER(0x37) | |
52 | #define R_CFG_P3_TRANSITION PHY_TO_OFF_PM_MASTER(0x38) | |
53 | ||
54 | #define LVL_WAKEUP 0x08 | |
55 | ||
56 | #define ENABLE_WARMRESET (1<<4) | |
57 | ||
58 | #define END_OF_SCRIPT 0x3f | |
59 | ||
60 | #define R_SEQ_ADD_A2S PHY_TO_OFF_PM_MASTER(0x55) | |
61 | #define R_SEQ_ADD_S2A12 PHY_TO_OFF_PM_MASTER(0x56) | |
62 | #define R_SEQ_ADD_S2A3 PHY_TO_OFF_PM_MASTER(0x57) | |
63 | #define R_SEQ_ADD_WARM PHY_TO_OFF_PM_MASTER(0x58) | |
64 | #define R_MEMORY_ADDRESS PHY_TO_OFF_PM_MASTER(0x59) | |
65 | #define R_MEMORY_DATA PHY_TO_OFF_PM_MASTER(0x5a) | |
66 | ||
890463f0 AK |
67 | /* resource configuration registers |
68 | <RESOURCE>_DEV_GRP at address 'n+0' | |
69 | <RESOURCE>_TYPE at address 'n+1' | |
70 | <RESOURCE>_REMAP at address 'n+2' | |
71 | <RESOURCE>_DEDICATED at address 'n+3' | |
72 | */ | |
e97d1546 | 73 | #define DEV_GRP_OFFSET 0 |
ebf0bd36 | 74 | #define TYPE_OFFSET 1 |
b4ead61e AK |
75 | #define REMAP_OFFSET 2 |
76 | #define DEDICATED_OFFSET 3 | |
ebf0bd36 | 77 | |
e97d1546 | 78 | /* Bit positions in the registers */ |
890463f0 AK |
79 | |
80 | /* <RESOURCE>_DEV_GRP */ | |
e97d1546 AK |
81 | #define DEV_GRP_SHIFT 5 |
82 | #define DEV_GRP_MASK (7 << DEV_GRP_SHIFT) | |
890463f0 AK |
83 | |
84 | /* <RESOURCE>_TYPE */ | |
ebf0bd36 AK |
85 | #define TYPE_SHIFT 0 |
86 | #define TYPE_MASK (7 << TYPE_SHIFT) | |
87 | #define TYPE2_SHIFT 3 | |
88 | #define TYPE2_MASK (3 << TYPE2_SHIFT) | |
89 | ||
b4ead61e AK |
90 | /* <RESOURCE>_REMAP */ |
91 | #define SLEEP_STATE_SHIFT 0 | |
92 | #define SLEEP_STATE_MASK (0xf << SLEEP_STATE_SHIFT) | |
93 | #define OFF_STATE_SHIFT 4 | |
94 | #define OFF_STATE_MASK (0xf << OFF_STATE_SHIFT) | |
95 | ||
ebf0bd36 AK |
96 | static u8 res_config_addrs[] = { |
97 | [RES_VAUX1] = 0x17, | |
98 | [RES_VAUX2] = 0x1b, | |
99 | [RES_VAUX3] = 0x1f, | |
100 | [RES_VAUX4] = 0x23, | |
101 | [RES_VMMC1] = 0x27, | |
102 | [RES_VMMC2] = 0x2b, | |
103 | [RES_VPLL1] = 0x2f, | |
104 | [RES_VPLL2] = 0x33, | |
105 | [RES_VSIM] = 0x37, | |
106 | [RES_VDAC] = 0x3b, | |
107 | [RES_VINTANA1] = 0x3f, | |
108 | [RES_VINTANA2] = 0x43, | |
109 | [RES_VINTDIG] = 0x47, | |
110 | [RES_VIO] = 0x4b, | |
111 | [RES_VDD1] = 0x55, | |
112 | [RES_VDD2] = 0x63, | |
113 | [RES_VUSB_1V5] = 0x71, | |
114 | [RES_VUSB_1V8] = 0x74, | |
115 | [RES_VUSB_3V1] = 0x77, | |
116 | [RES_VUSBCP] = 0x7a, | |
117 | [RES_REGEN] = 0x7f, | |
118 | [RES_NRES_PWRON] = 0x82, | |
119 | [RES_CLKEN] = 0x85, | |
120 | [RES_SYSEN] = 0x88, | |
121 | [RES_HFCLKOUT] = 0x8b, | |
122 | [RES_32KCLKOUT] = 0x8e, | |
123 | [RES_RESET] = 0x91, | |
d7ac829f | 124 | [RES_MAIN_REF] = 0x94, |
ebf0bd36 AK |
125 | }; |
126 | ||
127 | static int __init twl4030_write_script_byte(u8 address, u8 byte) | |
128 | { | |
129 | int err; | |
130 | ||
fc7b92fc | 131 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address, |
ebf0bd36 AK |
132 | R_MEMORY_ADDRESS); |
133 | if (err) | |
134 | goto out; | |
fc7b92fc | 135 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, byte, |
ebf0bd36 AK |
136 | R_MEMORY_DATA); |
137 | out: | |
138 | return err; | |
139 | } | |
140 | ||
141 | static int __init twl4030_write_script_ins(u8 address, u16 pmb_message, | |
142 | u8 delay, u8 next) | |
143 | { | |
144 | int err; | |
145 | ||
146 | address *= 4; | |
147 | err = twl4030_write_script_byte(address++, pmb_message >> 8); | |
148 | if (err) | |
149 | goto out; | |
150 | err = twl4030_write_script_byte(address++, pmb_message & 0xff); | |
151 | if (err) | |
152 | goto out; | |
153 | err = twl4030_write_script_byte(address++, delay); | |
154 | if (err) | |
155 | goto out; | |
156 | err = twl4030_write_script_byte(address++, next); | |
157 | out: | |
158 | return err; | |
159 | } | |
160 | ||
161 | static int __init twl4030_write_script(u8 address, struct twl4030_ins *script, | |
162 | int len) | |
163 | { | |
164 | int err; | |
165 | ||
166 | for (; len; len--, address++, script++) { | |
167 | if (len == 1) { | |
168 | err = twl4030_write_script_ins(address, | |
169 | script->pmb_message, | |
170 | script->delay, | |
171 | END_OF_SCRIPT); | |
172 | if (err) | |
173 | break; | |
174 | } else { | |
175 | err = twl4030_write_script_ins(address, | |
176 | script->pmb_message, | |
177 | script->delay, | |
178 | address + 1); | |
179 | if (err) | |
180 | break; | |
181 | } | |
182 | } | |
183 | return err; | |
184 | } | |
185 | ||
186 | static int __init twl4030_config_wakeup3_sequence(u8 address) | |
187 | { | |
188 | int err; | |
189 | u8 data; | |
190 | ||
191 | /* Set SLEEP to ACTIVE SEQ address for P3 */ | |
fc7b92fc | 192 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address, |
ebf0bd36 AK |
193 | R_SEQ_ADD_S2A3); |
194 | if (err) | |
195 | goto out; | |
196 | ||
197 | /* P3 LVL_WAKEUP should be on LEVEL */ | |
fc7b92fc | 198 | err = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data, |
ebf0bd36 AK |
199 | R_P3_SW_EVENTS); |
200 | if (err) | |
201 | goto out; | |
202 | data |= LVL_WAKEUP; | |
fc7b92fc | 203 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data, |
ebf0bd36 AK |
204 | R_P3_SW_EVENTS); |
205 | out: | |
206 | if (err) | |
207 | pr_err("TWL4030 wakeup sequence for P3 config error\n"); | |
208 | return err; | |
209 | } | |
210 | ||
211 | static int __init twl4030_config_wakeup12_sequence(u8 address) | |
212 | { | |
213 | int err = 0; | |
214 | u8 data; | |
215 | ||
216 | /* Set SLEEP to ACTIVE SEQ address for P1 and P2 */ | |
fc7b92fc | 217 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address, |
ebf0bd36 AK |
218 | R_SEQ_ADD_S2A12); |
219 | if (err) | |
220 | goto out; | |
221 | ||
222 | /* P1/P2 LVL_WAKEUP should be on LEVEL */ | |
fc7b92fc | 223 | err = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data, |
ebf0bd36 AK |
224 | R_P1_SW_EVENTS); |
225 | if (err) | |
226 | goto out; | |
227 | ||
228 | data |= LVL_WAKEUP; | |
fc7b92fc | 229 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data, |
ebf0bd36 AK |
230 | R_P1_SW_EVENTS); |
231 | if (err) | |
232 | goto out; | |
233 | ||
fc7b92fc | 234 | err = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data, |
ebf0bd36 AK |
235 | R_P2_SW_EVENTS); |
236 | if (err) | |
237 | goto out; | |
238 | ||
239 | data |= LVL_WAKEUP; | |
fc7b92fc | 240 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data, |
ebf0bd36 AK |
241 | R_P2_SW_EVENTS); |
242 | if (err) | |
243 | goto out; | |
244 | ||
245 | if (machine_is_omap_3430sdp() || machine_is_omap_ldp()) { | |
246 | /* Disabling AC charger effect on sleep-active transitions */ | |
fc7b92fc | 247 | err = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data, |
ebf0bd36 AK |
248 | R_CFG_P1_TRANSITION); |
249 | if (err) | |
250 | goto out; | |
251 | data &= ~(1<<1); | |
fc7b92fc | 252 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data , |
ebf0bd36 AK |
253 | R_CFG_P1_TRANSITION); |
254 | if (err) | |
255 | goto out; | |
256 | } | |
257 | ||
258 | out: | |
259 | if (err) | |
260 | pr_err("TWL4030 wakeup sequence for P1 and P2" \ | |
261 | "config error\n"); | |
262 | return err; | |
263 | } | |
264 | ||
265 | static int __init twl4030_config_sleep_sequence(u8 address) | |
266 | { | |
267 | int err; | |
268 | ||
269 | /* Set ACTIVE to SLEEP SEQ address in T2 memory*/ | |
fc7b92fc | 270 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address, |
ebf0bd36 AK |
271 | R_SEQ_ADD_A2S); |
272 | ||
273 | if (err) | |
274 | pr_err("TWL4030 sleep sequence config error\n"); | |
275 | ||
276 | return err; | |
277 | } | |
278 | ||
279 | static int __init twl4030_config_warmreset_sequence(u8 address) | |
280 | { | |
281 | int err; | |
282 | u8 rd_data; | |
283 | ||
284 | /* Set WARM RESET SEQ address for P1 */ | |
fc7b92fc | 285 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address, |
ebf0bd36 AK |
286 | R_SEQ_ADD_WARM); |
287 | if (err) | |
288 | goto out; | |
289 | ||
290 | /* P1/P2/P3 enable WARMRESET */ | |
fc7b92fc | 291 | err = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data, |
ebf0bd36 AK |
292 | R_P1_SW_EVENTS); |
293 | if (err) | |
294 | goto out; | |
295 | ||
296 | rd_data |= ENABLE_WARMRESET; | |
fc7b92fc | 297 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data, |
ebf0bd36 AK |
298 | R_P1_SW_EVENTS); |
299 | if (err) | |
300 | goto out; | |
301 | ||
fc7b92fc | 302 | err = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data, |
ebf0bd36 AK |
303 | R_P2_SW_EVENTS); |
304 | if (err) | |
305 | goto out; | |
306 | ||
307 | rd_data |= ENABLE_WARMRESET; | |
fc7b92fc | 308 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data, |
ebf0bd36 AK |
309 | R_P2_SW_EVENTS); |
310 | if (err) | |
311 | goto out; | |
312 | ||
fc7b92fc | 313 | err = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data, |
ebf0bd36 AK |
314 | R_P3_SW_EVENTS); |
315 | if (err) | |
316 | goto out; | |
317 | ||
318 | rd_data |= ENABLE_WARMRESET; | |
fc7b92fc | 319 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data, |
ebf0bd36 AK |
320 | R_P3_SW_EVENTS); |
321 | out: | |
322 | if (err) | |
323 | pr_err("TWL4030 warmreset seq config error\n"); | |
324 | return err; | |
325 | } | |
326 | ||
327 | static int __init twl4030_configure_resource(struct twl4030_resconfig *rconfig) | |
328 | { | |
329 | int rconfig_addr; | |
330 | int err; | |
331 | u8 type; | |
332 | u8 grp; | |
b4ead61e | 333 | u8 remap; |
ebf0bd36 AK |
334 | |
335 | if (rconfig->resource > TOTAL_RESOURCES) { | |
336 | pr_err("TWL4030 Resource %d does not exist\n", | |
337 | rconfig->resource); | |
338 | return -EINVAL; | |
339 | } | |
340 | ||
341 | rconfig_addr = res_config_addrs[rconfig->resource]; | |
342 | ||
343 | /* Set resource group */ | |
fc7b92fc B |
344 | err = twl_i2c_read_u8(TWL4030_MODULE_PM_RECEIVER, &grp, |
345 | rconfig_addr + DEV_GRP_OFFSET); | |
ebf0bd36 AK |
346 | if (err) { |
347 | pr_err("TWL4030 Resource %d group could not be read\n", | |
348 | rconfig->resource); | |
349 | return err; | |
350 | } | |
351 | ||
56baa667 | 352 | if (rconfig->devgroup != TWL4030_RESCONFIG_UNDEF) { |
e97d1546 AK |
353 | grp &= ~DEV_GRP_MASK; |
354 | grp |= rconfig->devgroup << DEV_GRP_SHIFT; | |
fc7b92fc B |
355 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, |
356 | grp, rconfig_addr + DEV_GRP_OFFSET); | |
ebf0bd36 AK |
357 | if (err < 0) { |
358 | pr_err("TWL4030 failed to program devgroup\n"); | |
359 | return err; | |
360 | } | |
361 | } | |
362 | ||
363 | /* Set resource types */ | |
fc7b92fc | 364 | err = twl_i2c_read_u8(TWL4030_MODULE_PM_RECEIVER, &type, |
ebf0bd36 AK |
365 | rconfig_addr + TYPE_OFFSET); |
366 | if (err < 0) { | |
367 | pr_err("TWL4030 Resource %d type could not be read\n", | |
368 | rconfig->resource); | |
369 | return err; | |
370 | } | |
371 | ||
56baa667 | 372 | if (rconfig->type != TWL4030_RESCONFIG_UNDEF) { |
ebf0bd36 AK |
373 | type &= ~TYPE_MASK; |
374 | type |= rconfig->type << TYPE_SHIFT; | |
375 | } | |
376 | ||
56baa667 | 377 | if (rconfig->type2 != TWL4030_RESCONFIG_UNDEF) { |
ebf0bd36 AK |
378 | type &= ~TYPE2_MASK; |
379 | type |= rconfig->type2 << TYPE2_SHIFT; | |
380 | } | |
381 | ||
fc7b92fc | 382 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, |
ebf0bd36 AK |
383 | type, rconfig_addr + TYPE_OFFSET); |
384 | if (err < 0) { | |
385 | pr_err("TWL4030 failed to program resource type\n"); | |
386 | return err; | |
387 | } | |
388 | ||
b4ead61e | 389 | /* Set remap states */ |
fc7b92fc B |
390 | err = twl_i2c_read_u8(TWL4030_MODULE_PM_RECEIVER, &remap, |
391 | rconfig_addr + REMAP_OFFSET); | |
b4ead61e AK |
392 | if (err < 0) { |
393 | pr_err("TWL4030 Resource %d remap could not be read\n", | |
394 | rconfig->resource); | |
395 | return err; | |
396 | } | |
397 | ||
53cf9a60 | 398 | if (rconfig->remap_off != TWL4030_RESCONFIG_UNDEF) { |
b4ead61e AK |
399 | remap &= ~OFF_STATE_MASK; |
400 | remap |= rconfig->remap_off << OFF_STATE_SHIFT; | |
401 | } | |
402 | ||
53cf9a60 | 403 | if (rconfig->remap_sleep != TWL4030_RESCONFIG_UNDEF) { |
b4ead61e | 404 | remap &= ~SLEEP_STATE_MASK; |
1ea933f4 | 405 | remap |= rconfig->remap_sleep << SLEEP_STATE_SHIFT; |
b4ead61e AK |
406 | } |
407 | ||
fc7b92fc B |
408 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, |
409 | remap, | |
410 | rconfig_addr + REMAP_OFFSET); | |
b4ead61e AK |
411 | if (err < 0) { |
412 | pr_err("TWL4030 failed to program remap\n"); | |
413 | return err; | |
414 | } | |
415 | ||
ebf0bd36 AK |
416 | return 0; |
417 | } | |
418 | ||
419 | static int __init load_twl4030_script(struct twl4030_script *tscript, | |
420 | u8 address) | |
421 | { | |
422 | int err; | |
75a74565 | 423 | static int order; |
ebf0bd36 AK |
424 | |
425 | /* Make sure the script isn't going beyond last valid address (0x3f) */ | |
426 | if ((address + tscript->size) > END_OF_SCRIPT) { | |
427 | pr_err("TWL4030 scripts too big error\n"); | |
428 | return -EINVAL; | |
429 | } | |
430 | ||
431 | err = twl4030_write_script(address, tscript->script, tscript->size); | |
432 | if (err) | |
433 | goto out; | |
434 | ||
435 | if (tscript->flags & TWL4030_WRST_SCRIPT) { | |
436 | err = twl4030_config_warmreset_sequence(address); | |
437 | if (err) | |
438 | goto out; | |
439 | } | |
440 | if (tscript->flags & TWL4030_WAKEUP12_SCRIPT) { | |
441 | err = twl4030_config_wakeup12_sequence(address); | |
442 | if (err) | |
443 | goto out; | |
75a74565 | 444 | order = 1; |
ebf0bd36 AK |
445 | } |
446 | if (tscript->flags & TWL4030_WAKEUP3_SCRIPT) { | |
447 | err = twl4030_config_wakeup3_sequence(address); | |
448 | if (err) | |
449 | goto out; | |
450 | } | |
c62dd365 | 451 | if (tscript->flags & TWL4030_SLEEP_SCRIPT) { |
1f968ff6 | 452 | if (!order) |
75a74565 AK |
453 | pr_warning("TWL4030: Bad order of scripts (sleep "\ |
454 | "script before wakeup) Leads to boot"\ | |
455 | "failure on some boards\n"); | |
ebf0bd36 | 456 | err = twl4030_config_sleep_sequence(address); |
c62dd365 | 457 | } |
ebf0bd36 AK |
458 | out: |
459 | return err; | |
460 | } | |
461 | ||
11a441ce MT |
462 | int twl4030_remove_script(u8 flags) |
463 | { | |
464 | int err = 0; | |
465 | ||
71084406 FB |
466 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, |
467 | TWL4030_PM_MASTER_KEY_CFG1, | |
468 | TWL4030_PM_MASTER_PROTECT_KEY); | |
11a441ce MT |
469 | if (err) { |
470 | pr_err("twl4030: unable to unlock PROTECT_KEY\n"); | |
471 | return err; | |
472 | } | |
473 | ||
71084406 FB |
474 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, |
475 | TWL4030_PM_MASTER_KEY_CFG2, | |
476 | TWL4030_PM_MASTER_PROTECT_KEY); | |
11a441ce MT |
477 | if (err) { |
478 | pr_err("twl4030: unable to unlock PROTECT_KEY\n"); | |
479 | return err; | |
480 | } | |
481 | ||
482 | if (flags & TWL4030_WRST_SCRIPT) { | |
483 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, END_OF_SCRIPT, | |
484 | R_SEQ_ADD_WARM); | |
485 | if (err) | |
486 | return err; | |
487 | } | |
488 | if (flags & TWL4030_WAKEUP12_SCRIPT) { | |
11a441ce MT |
489 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, END_OF_SCRIPT, |
490 | R_SEQ_ADD_S2A12); | |
eac78a21 | 491 | if (err) |
11a441ce MT |
492 | return err; |
493 | } | |
494 | if (flags & TWL4030_WAKEUP3_SCRIPT) { | |
495 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, END_OF_SCRIPT, | |
496 | R_SEQ_ADD_S2A3); | |
497 | if (err) | |
498 | return err; | |
499 | } | |
500 | if (flags & TWL4030_SLEEP_SCRIPT) { | |
501 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, END_OF_SCRIPT, | |
502 | R_SEQ_ADD_A2S); | |
503 | if (err) | |
504 | return err; | |
505 | } | |
506 | ||
71084406 FB |
507 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0, |
508 | TWL4030_PM_MASTER_PROTECT_KEY); | |
11a441ce MT |
509 | if (err) |
510 | pr_err("TWL4030 Unable to relock registers\n"); | |
511 | ||
512 | return err; | |
513 | } | |
514 | ||
26cc3ab9 IG |
515 | /* |
516 | * In master mode, start the power off sequence. | |
517 | * After a successful execution, TWL shuts down the power to the SoC | |
518 | * and all peripherals connected to it. | |
519 | */ | |
520 | void twl4030_power_off(void) | |
521 | { | |
522 | int err; | |
523 | ||
524 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, PWR_DEVOFF, | |
525 | TWL4030_PM_MASTER_P1_SW_EVENTS); | |
526 | if (err) | |
527 | pr_err("TWL4030 Unable to power off\n"); | |
528 | } | |
529 | ||
ebf0bd36 AK |
530 | void __init twl4030_power_init(struct twl4030_power_data *twl4030_scripts) |
531 | { | |
532 | int err = 0; | |
533 | int i; | |
534 | struct twl4030_resconfig *resconfig; | |
26cc3ab9 | 535 | u8 val, address = twl4030_start_script_address; |
ebf0bd36 | 536 | |
71084406 FB |
537 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, |
538 | TWL4030_PM_MASTER_KEY_CFG1, | |
539 | TWL4030_PM_MASTER_PROTECT_KEY); | |
ebf0bd36 AK |
540 | if (err) |
541 | goto unlock; | |
542 | ||
71084406 FB |
543 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, |
544 | TWL4030_PM_MASTER_KEY_CFG2, | |
545 | TWL4030_PM_MASTER_PROTECT_KEY); | |
ebf0bd36 AK |
546 | if (err) |
547 | goto unlock; | |
548 | ||
549 | for (i = 0; i < twl4030_scripts->num; i++) { | |
550 | err = load_twl4030_script(twl4030_scripts->scripts[i], address); | |
551 | if (err) | |
552 | goto load; | |
553 | address += twl4030_scripts->scripts[i]->size; | |
554 | } | |
555 | ||
556 | resconfig = twl4030_scripts->resource_config; | |
557 | if (resconfig) { | |
558 | while (resconfig->resource) { | |
559 | err = twl4030_configure_resource(resconfig); | |
560 | if (err) | |
561 | goto resource; | |
562 | resconfig++; | |
563 | ||
564 | } | |
565 | } | |
566 | ||
26cc3ab9 IG |
567 | /* Board has to be wired properly to use this feature */ |
568 | if (twl4030_scripts->use_poweroff && !pm_power_off) { | |
569 | /* Default for SEQ_OFFSYNC is set, lets ensure this */ | |
570 | err = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &val, | |
571 | TWL4030_PM_MASTER_CFG_P123_TRANSITION); | |
572 | if (err) { | |
573 | pr_warning("TWL4030 Unable to read registers\n"); | |
574 | ||
575 | } else if (!(val & SEQ_OFFSYNC)) { | |
576 | val |= SEQ_OFFSYNC; | |
577 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, val, | |
578 | TWL4030_PM_MASTER_CFG_P123_TRANSITION); | |
579 | if (err) { | |
580 | pr_err("TWL4030 Unable to setup SEQ_OFFSYNC\n"); | |
581 | goto relock; | |
582 | } | |
583 | } | |
584 | ||
585 | pm_power_off = twl4030_power_off; | |
586 | } | |
587 | ||
588 | relock: | |
71084406 FB |
589 | err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0, |
590 | TWL4030_PM_MASTER_PROTECT_KEY); | |
ebf0bd36 AK |
591 | if (err) |
592 | pr_err("TWL4030 Unable to relock registers\n"); | |
593 | return; | |
594 | ||
595 | unlock: | |
596 | if (err) | |
597 | pr_err("TWL4030 Unable to unlock registers\n"); | |
598 | return; | |
599 | load: | |
600 | if (err) | |
601 | pr_err("TWL4030 failed to load scripts\n"); | |
602 | return; | |
603 | resource: | |
604 | if (err) | |
605 | pr_err("TWL4030 failed to configure resource\n"); | |
606 | return; | |
607 | } |