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72cd7995 DB |
1 | /* |
2 | * tps65010 - driver for tps6501x power management chips | |
3 | * | |
4 | * Copyright (C) 2004 Texas Instruments | |
5 | * Copyright (C) 2004-2005 David Brownell | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
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. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
72cd7995 | 21 | |
72cd7995 DB |
22 | #include <linux/kernel.h> |
23 | #include <linux/module.h> | |
24 | #include <linux/init.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/interrupt.h> | |
27 | #include <linux/device.h> | |
28 | #include <linux/i2c.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/workqueue.h> | |
31 | #include <linux/suspend.h> | |
32 | #include <linux/debugfs.h> | |
33 | #include <linux/seq_file.h> | |
5c085d36 | 34 | #include <linux/mutex.h> |
72cd7995 DB |
35 | |
36 | #include <asm/irq.h> | |
37 | #include <asm/mach-types.h> | |
38 | ||
39 | #include <asm/arch/gpio.h> | |
40 | #include <asm/arch/mux.h> | |
41 | #include <asm/arch/tps65010.h> | |
42 | ||
43 | /*-------------------------------------------------------------------------*/ | |
44 | ||
45 | #define DRIVER_VERSION "2 May 2005" | |
4801bc25 | 46 | #define DRIVER_NAME (tps65010_driver.driver.name) |
72cd7995 DB |
47 | |
48 | MODULE_DESCRIPTION("TPS6501x Power Management Driver"); | |
49 | MODULE_LICENSE("GPL"); | |
50 | ||
65fc50e5 | 51 | static unsigned short normal_i2c[] = { 0x48, /* 0x49, */ I2C_CLIENT_END }; |
72cd7995 DB |
52 | |
53 | I2C_CLIENT_INSMOD; | |
54 | ||
55 | static struct i2c_driver tps65010_driver; | |
56 | ||
57 | /*-------------------------------------------------------------------------*/ | |
58 | ||
59 | /* This driver handles a family of multipurpose chips, which incorporate | |
60 | * voltage regulators, lithium ion/polymer battery charging, GPIOs, LEDs, | |
61 | * and other features often needed in portable devices like cell phones | |
62 | * or digital cameras. | |
63 | * | |
64 | * The tps65011 and tps65013 have different voltage settings compared | |
65 | * to tps65010 and tps65012. The tps65013 has a NO_CHG status/irq. | |
66 | * All except tps65010 have "wait" mode, possibly defaulted so that | |
67 | * battery-insert != device-on. | |
68 | * | |
69 | * We could distinguish between some models by checking VDCDC1.UVLO or | |
70 | * other registers, unless they've been changed already after powerup | |
71 | * as part of board setup by a bootloader. | |
72 | */ | |
73 | enum tps_model { | |
74 | TPS_UNKNOWN = 0, | |
75 | TPS65010, | |
76 | TPS65011, | |
77 | TPS65012, | |
78 | TPS65013, | |
79 | }; | |
80 | ||
81 | struct tps65010 { | |
82 | struct i2c_client client; | |
5c085d36 | 83 | struct mutex lock; |
72cd7995 | 84 | int irq; |
8c1bc04e | 85 | struct delayed_work work; |
72cd7995 DB |
86 | struct dentry *file; |
87 | unsigned charging:1; | |
88 | unsigned por:1; | |
89 | unsigned model:8; | |
90 | u16 vbus; | |
91 | unsigned long flags; | |
92 | #define FLAG_VBUS_CHANGED 0 | |
93 | #define FLAG_IRQ_ENABLE 1 | |
94 | ||
95 | /* copies of last register state */ | |
96 | u8 chgstatus, regstatus, chgconf; | |
97 | u8 nmask1, nmask2; | |
98 | ||
65fc50e5 | 99 | /* not currently tracking GPIO state */ |
72cd7995 DB |
100 | }; |
101 | ||
4801bc25 | 102 | #define POWER_POLL_DELAY msecs_to_jiffies(5000) |
72cd7995 DB |
103 | |
104 | /*-------------------------------------------------------------------------*/ | |
105 | ||
106 | #if defined(DEBUG) || defined(CONFIG_DEBUG_FS) | |
107 | ||
108 | static void dbg_chgstat(char *buf, size_t len, u8 chgstatus) | |
109 | { | |
110 | snprintf(buf, len, "%02x%s%s%s%s%s%s%s%s\n", | |
111 | chgstatus, | |
112 | (chgstatus & TPS_CHG_USB) ? " USB" : "", | |
113 | (chgstatus & TPS_CHG_AC) ? " AC" : "", | |
114 | (chgstatus & TPS_CHG_THERM) ? " therm" : "", | |
115 | (chgstatus & TPS_CHG_TERM) ? " done" : | |
116 | ((chgstatus & (TPS_CHG_USB|TPS_CHG_AC)) | |
117 | ? " (charging)" : ""), | |
118 | (chgstatus & TPS_CHG_TAPER_TMO) ? " taper_tmo" : "", | |
119 | (chgstatus & TPS_CHG_CHG_TMO) ? " charge_tmo" : "", | |
120 | (chgstatus & TPS_CHG_PRECHG_TMO) ? " prechg_tmo" : "", | |
121 | (chgstatus & TPS_CHG_TEMP_ERR) ? " temp_err" : ""); | |
122 | } | |
123 | ||
124 | static void dbg_regstat(char *buf, size_t len, u8 regstatus) | |
125 | { | |
126 | snprintf(buf, len, "%02x %s%s%s%s%s%s%s%s\n", | |
127 | regstatus, | |
128 | (regstatus & TPS_REG_ONOFF) ? "off" : "(on)", | |
129 | (regstatus & TPS_REG_COVER) ? " uncover" : "", | |
130 | (regstatus & TPS_REG_UVLO) ? " UVLO" : "", | |
131 | (regstatus & TPS_REG_NO_CHG) ? " NO_CHG" : "", | |
65fc50e5 | 132 | (regstatus & TPS_REG_PG_LD02) ? " ld02_bad" : "", |
72cd7995 DB |
133 | (regstatus & TPS_REG_PG_LD01) ? " ld01_bad" : "", |
134 | (regstatus & TPS_REG_PG_MAIN) ? " main_bad" : "", | |
135 | (regstatus & TPS_REG_PG_CORE) ? " core_bad" : ""); | |
136 | } | |
137 | ||
138 | static void dbg_chgconf(int por, char *buf, size_t len, u8 chgconfig) | |
139 | { | |
65fc50e5 | 140 | const char *hibit; |
72cd7995 DB |
141 | |
142 | if (por) | |
143 | hibit = (chgconfig & TPS_CHARGE_POR) | |
144 | ? "POR=69ms" : "POR=1sec"; | |
145 | else | |
146 | hibit = (chgconfig & TPS65013_AUA) ? "AUA" : ""; | |
147 | ||
148 | snprintf(buf, len, "%02x %s%s%s AC=%d%% USB=%dmA %sCharge\n", | |
149 | chgconfig, hibit, | |
150 | (chgconfig & TPS_CHARGE_RESET) ? " reset" : "", | |
151 | (chgconfig & TPS_CHARGE_FAST) ? " fast" : "", | |
152 | ({int p; switch ((chgconfig >> 3) & 3) { | |
153 | case 3: p = 100; break; | |
154 | case 2: p = 75; break; | |
155 | case 1: p = 50; break; | |
156 | default: p = 25; break; | |
157 | }; p; }), | |
158 | (chgconfig & TPS_VBUS_CHARGING) | |
159 | ? ((chgconfig & TPS_VBUS_500MA) ? 500 : 100) | |
160 | : 0, | |
161 | (chgconfig & TPS_CHARGE_ENABLE) ? "" : "No"); | |
162 | } | |
163 | ||
164 | #endif | |
165 | ||
166 | #ifdef DEBUG | |
167 | ||
168 | static void show_chgstatus(const char *label, u8 chgstatus) | |
169 | { | |
170 | char buf [100]; | |
171 | ||
172 | dbg_chgstat(buf, sizeof buf, chgstatus); | |
173 | pr_debug("%s: %s %s", DRIVER_NAME, label, buf); | |
174 | } | |
175 | ||
176 | static void show_regstatus(const char *label, u8 regstatus) | |
177 | { | |
178 | char buf [100]; | |
179 | ||
180 | dbg_regstat(buf, sizeof buf, regstatus); | |
181 | pr_debug("%s: %s %s", DRIVER_NAME, label, buf); | |
182 | } | |
183 | ||
184 | static void show_chgconfig(int por, const char *label, u8 chgconfig) | |
185 | { | |
186 | char buf [100]; | |
187 | ||
188 | dbg_chgconf(por, buf, sizeof buf, chgconfig); | |
189 | pr_debug("%s: %s %s", DRIVER_NAME, label, buf); | |
190 | } | |
191 | ||
192 | #else | |
193 | ||
194 | static inline void show_chgstatus(const char *label, u8 chgstatus) { } | |
195 | static inline void show_regstatus(const char *label, u8 chgstatus) { } | |
196 | static inline void show_chgconfig(int por, const char *label, u8 chgconfig) { } | |
197 | ||
198 | #endif | |
199 | ||
200 | #ifdef CONFIG_DEBUG_FS | |
201 | ||
202 | static int dbg_show(struct seq_file *s, void *_) | |
203 | { | |
204 | struct tps65010 *tps = s->private; | |
205 | u8 value, v2; | |
206 | unsigned i; | |
207 | char buf[100]; | |
208 | const char *chip; | |
209 | ||
210 | switch (tps->model) { | |
211 | case TPS65010: chip = "tps65010"; break; | |
212 | case TPS65011: chip = "tps65011"; break; | |
213 | case TPS65012: chip = "tps65012"; break; | |
214 | case TPS65013: chip = "tps65013"; break; | |
215 | default: chip = NULL; break; | |
216 | } | |
217 | seq_printf(s, "driver %s\nversion %s\nchip %s\n\n", | |
218 | DRIVER_NAME, DRIVER_VERSION, chip); | |
219 | ||
5c085d36 | 220 | mutex_lock(&tps->lock); |
72cd7995 DB |
221 | |
222 | /* FIXME how can we tell whether a battery is present? | |
223 | * likely involves a charge gauging chip (like BQ26501). | |
224 | */ | |
225 | ||
226 | seq_printf(s, "%scharging\n\n", tps->charging ? "" : "(not) "); | |
227 | ||
228 | ||
229 | /* registers for monitoring battery charging and status; note | |
230 | * that reading chgstat and regstat may ack IRQs... | |
231 | */ | |
232 | value = i2c_smbus_read_byte_data(&tps->client, TPS_CHGCONFIG); | |
233 | dbg_chgconf(tps->por, buf, sizeof buf, value); | |
234 | seq_printf(s, "chgconfig %s", buf); | |
235 | ||
236 | value = i2c_smbus_read_byte_data(&tps->client, TPS_CHGSTATUS); | |
237 | dbg_chgstat(buf, sizeof buf, value); | |
238 | seq_printf(s, "chgstat %s", buf); | |
239 | value = i2c_smbus_read_byte_data(&tps->client, TPS_MASK1); | |
240 | dbg_chgstat(buf, sizeof buf, value); | |
241 | seq_printf(s, "mask1 %s", buf); | |
242 | /* ignore ackint1 */ | |
243 | ||
244 | value = i2c_smbus_read_byte_data(&tps->client, TPS_REGSTATUS); | |
245 | dbg_regstat(buf, sizeof buf, value); | |
246 | seq_printf(s, "regstat %s", buf); | |
247 | value = i2c_smbus_read_byte_data(&tps->client, TPS_MASK2); | |
248 | dbg_regstat(buf, sizeof buf, value); | |
249 | seq_printf(s, "mask2 %s\n", buf); | |
250 | /* ignore ackint2 */ | |
251 | ||
252 | (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY); | |
253 | ||
254 | ||
255 | /* VMAIN voltage, enable lowpower, etc */ | |
256 | value = i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC1); | |
257 | seq_printf(s, "vdcdc1 %02x\n", value); | |
258 | ||
259 | /* VCORE voltage, vibrator on/off */ | |
260 | value = i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC2); | |
261 | seq_printf(s, "vdcdc2 %02x\n", value); | |
262 | ||
263 | /* both LD0s, and their lowpower behavior */ | |
264 | value = i2c_smbus_read_byte_data(&tps->client, TPS_VREGS1); | |
265 | seq_printf(s, "vregs1 %02x\n\n", value); | |
266 | ||
267 | ||
268 | /* LEDs and GPIOs */ | |
269 | value = i2c_smbus_read_byte_data(&tps->client, TPS_LED1_ON); | |
270 | v2 = i2c_smbus_read_byte_data(&tps->client, TPS_LED1_PER); | |
271 | seq_printf(s, "led1 %s, on=%02x, per=%02x, %d/%d msec\n", | |
272 | (value & 0x80) | |
273 | ? ((v2 & 0x80) ? "on" : "off") | |
274 | : ((v2 & 0x80) ? "blink" : "(nPG)"), | |
275 | value, v2, | |
276 | (value & 0x7f) * 10, (v2 & 0x7f) * 100); | |
277 | ||
278 | value = i2c_smbus_read_byte_data(&tps->client, TPS_LED2_ON); | |
279 | v2 = i2c_smbus_read_byte_data(&tps->client, TPS_LED2_PER); | |
280 | seq_printf(s, "led2 %s, on=%02x, per=%02x, %d/%d msec\n", | |
281 | (value & 0x80) | |
282 | ? ((v2 & 0x80) ? "on" : "off") | |
283 | : ((v2 & 0x80) ? "blink" : "off"), | |
284 | value, v2, | |
285 | (value & 0x7f) * 10, (v2 & 0x7f) * 100); | |
286 | ||
287 | value = i2c_smbus_read_byte_data(&tps->client, TPS_DEFGPIO); | |
288 | v2 = i2c_smbus_read_byte_data(&tps->client, TPS_MASK3); | |
289 | seq_printf(s, "defgpio %02x mask3 %02x\n", value, v2); | |
290 | ||
291 | for (i = 0; i < 4; i++) { | |
65fc50e5 | 292 | if (value & (1 << (4 + i))) |
72cd7995 DB |
293 | seq_printf(s, " gpio%d-out %s\n", i + 1, |
294 | (value & (1 << i)) ? "low" : "hi "); | |
295 | else | |
296 | seq_printf(s, " gpio%d-in %s %s %s\n", i + 1, | |
297 | (value & (1 << i)) ? "hi " : "low", | |
298 | (v2 & (1 << i)) ? "no-irq" : "irq", | |
299 | (v2 & (1 << (4 + i))) ? "rising" : "falling"); | |
300 | } | |
301 | ||
5c085d36 | 302 | mutex_unlock(&tps->lock); |
72cd7995 DB |
303 | return 0; |
304 | } | |
305 | ||
306 | static int dbg_tps_open(struct inode *inode, struct file *file) | |
307 | { | |
8e18e294 | 308 | return single_open(file, dbg_show, inode->i_private); |
72cd7995 DB |
309 | } |
310 | ||
2b8693c0 | 311 | static const struct file_operations debug_fops = { |
72cd7995 DB |
312 | .open = dbg_tps_open, |
313 | .read = seq_read, | |
314 | .llseek = seq_lseek, | |
315 | .release = single_release, | |
316 | }; | |
317 | ||
318 | #define DEBUG_FOPS &debug_fops | |
319 | ||
320 | #else | |
321 | #define DEBUG_FOPS NULL | |
322 | #endif | |
323 | ||
324 | /*-------------------------------------------------------------------------*/ | |
325 | ||
326 | /* handle IRQS in a task context, so we can use I2C calls */ | |
327 | static void tps65010_interrupt(struct tps65010 *tps) | |
328 | { | |
329 | u8 tmp = 0, mask, poll; | |
330 | ||
8c1bc04e | 331 | /* IRQs won't trigger for certain events, but we can get |
72cd7995 DB |
332 | * others by polling (normally, with external power applied). |
333 | */ | |
334 | poll = 0; | |
335 | ||
336 | /* regstatus irqs */ | |
337 | if (tps->nmask2) { | |
338 | tmp = i2c_smbus_read_byte_data(&tps->client, TPS_REGSTATUS); | |
339 | mask = tmp ^ tps->regstatus; | |
340 | tps->regstatus = tmp; | |
341 | mask &= tps->nmask2; | |
342 | } else | |
343 | mask = 0; | |
344 | if (mask) { | |
345 | tps->regstatus = tmp; | |
346 | /* may need to shut something down ... */ | |
347 | ||
348 | /* "off" usually means deep sleep */ | |
349 | if (tmp & TPS_REG_ONOFF) { | |
350 | pr_info("%s: power off button\n", DRIVER_NAME); | |
351 | #if 0 | |
352 | /* REVISIT: this might need its own workqueue | |
353 | * plus tweaks including deadlock avoidance ... | |
ab3bfca7 | 354 | * also needs to get error handling and probably |
b0cb1a19 | 355 | * an #ifdef CONFIG_HIBERNATION |
72cd7995 | 356 | */ |
a3d25c27 | 357 | hibernate(); |
72cd7995 DB |
358 | #endif |
359 | poll = 1; | |
360 | } | |
361 | } | |
362 | ||
363 | /* chgstatus irqs */ | |
364 | if (tps->nmask1) { | |
365 | tmp = i2c_smbus_read_byte_data(&tps->client, TPS_CHGSTATUS); | |
366 | mask = tmp ^ tps->chgstatus; | |
367 | tps->chgstatus = tmp; | |
368 | mask &= tps->nmask1; | |
369 | } else | |
370 | mask = 0; | |
371 | if (mask) { | |
372 | unsigned charging = 0; | |
373 | ||
374 | show_chgstatus("chg/irq", tmp); | |
375 | if (tmp & (TPS_CHG_USB|TPS_CHG_AC)) | |
376 | show_chgconfig(tps->por, "conf", tps->chgconf); | |
377 | ||
378 | /* Unless it was turned off or disabled, we charge any | |
379 | * battery whenever there's power available for it | |
380 | * and the charger hasn't been disabled. | |
381 | */ | |
382 | if (!(tps->chgstatus & ~(TPS_CHG_USB|TPS_CHG_AC)) | |
383 | && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)) | |
384 | && (tps->chgconf & TPS_CHARGE_ENABLE) | |
385 | ) { | |
386 | if (tps->chgstatus & TPS_CHG_USB) { | |
387 | /* VBUS options are readonly until reconnect */ | |
388 | if (mask & TPS_CHG_USB) | |
389 | set_bit(FLAG_VBUS_CHANGED, &tps->flags); | |
390 | charging = 1; | |
391 | } else if (tps->chgstatus & TPS_CHG_AC) | |
392 | charging = 1; | |
393 | } | |
394 | if (charging != tps->charging) { | |
395 | tps->charging = charging; | |
396 | pr_info("%s: battery %scharging\n", | |
397 | DRIVER_NAME, charging ? "" : | |
398 | ((tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)) | |
399 | ? "NOT " : "dis")); | |
400 | } | |
401 | } | |
402 | ||
403 | /* always poll to detect (a) power removal, without tps65013 | |
404 | * NO_CHG IRQ; or (b) restart of charging after stop. | |
405 | */ | |
406 | if ((tps->model != TPS65013 || !tps->charging) | |
407 | && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))) | |
408 | poll = 1; | |
409 | if (poll) | |
410 | (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY); | |
411 | ||
412 | /* also potentially gpio-in rise or fall */ | |
413 | } | |
414 | ||
415 | /* handle IRQs and polling using keventd for now */ | |
8c1bc04e | 416 | static void tps65010_work(struct work_struct *work) |
72cd7995 | 417 | { |
8c1bc04e | 418 | struct tps65010 *tps; |
72cd7995 | 419 | |
8c1bc04e | 420 | tps = container_of(work, struct tps65010, work.work); |
5c085d36 | 421 | mutex_lock(&tps->lock); |
72cd7995 DB |
422 | |
423 | tps65010_interrupt(tps); | |
424 | ||
425 | if (test_and_clear_bit(FLAG_VBUS_CHANGED, &tps->flags)) { | |
426 | int status; | |
427 | u8 chgconfig, tmp; | |
428 | ||
429 | chgconfig = i2c_smbus_read_byte_data(&tps->client, | |
430 | TPS_CHGCONFIG); | |
431 | chgconfig &= ~(TPS_VBUS_500MA | TPS_VBUS_CHARGING); | |
432 | if (tps->vbus == 500) | |
433 | chgconfig |= TPS_VBUS_500MA | TPS_VBUS_CHARGING; | |
434 | else if (tps->vbus >= 100) | |
435 | chgconfig |= TPS_VBUS_CHARGING; | |
436 | ||
437 | status = i2c_smbus_write_byte_data(&tps->client, | |
438 | TPS_CHGCONFIG, chgconfig); | |
439 | ||
440 | /* vbus update fails unless VBUS is connected! */ | |
441 | tmp = i2c_smbus_read_byte_data(&tps->client, TPS_CHGCONFIG); | |
442 | tps->chgconf = tmp; | |
443 | show_chgconfig(tps->por, "update vbus", tmp); | |
444 | } | |
445 | ||
446 | if (test_and_clear_bit(FLAG_IRQ_ENABLE, &tps->flags)) | |
447 | enable_irq(tps->irq); | |
448 | ||
5c085d36 | 449 | mutex_unlock(&tps->lock); |
72cd7995 DB |
450 | } |
451 | ||
7d12e780 | 452 | static irqreturn_t tps65010_irq(int irq, void *_tps) |
72cd7995 DB |
453 | { |
454 | struct tps65010 *tps = _tps; | |
455 | ||
456 | disable_irq_nosync(irq); | |
457 | set_bit(FLAG_IRQ_ENABLE, &tps->flags); | |
8c1bc04e | 458 | (void) schedule_work(&tps->work.work); |
72cd7995 DB |
459 | return IRQ_HANDLED; |
460 | } | |
461 | ||
462 | /*-------------------------------------------------------------------------*/ | |
463 | ||
464 | static struct tps65010 *the_tps; | |
465 | ||
466 | static int __exit tps65010_detach_client(struct i2c_client *client) | |
467 | { | |
468 | struct tps65010 *tps; | |
469 | ||
470 | tps = container_of(client, struct tps65010, client); | |
8c1bc04e | 471 | free_irq(tps->irq, tps); |
72cd7995 DB |
472 | #ifdef CONFIG_ARM |
473 | if (machine_is_omap_h2()) | |
474 | omap_free_gpio(58); | |
475 | if (machine_is_omap_osk()) | |
476 | omap_free_gpio(OMAP_MPUIO(1)); | |
477 | #endif | |
8c1bc04e DB |
478 | cancel_delayed_work(&tps->work); |
479 | flush_scheduled_work(); | |
72cd7995 DB |
480 | debugfs_remove(tps->file); |
481 | if (i2c_detach_client(client) == 0) | |
482 | kfree(tps); | |
65fc50e5 | 483 | the_tps = NULL; |
72cd7995 DB |
484 | return 0; |
485 | } | |
486 | ||
487 | static int tps65010_noscan(struct i2c_adapter *bus) | |
488 | { | |
489 | /* pure paranoia, in case someone adds another i2c bus | |
490 | * after our init section's gone... | |
491 | */ | |
492 | return -ENODEV; | |
493 | } | |
494 | ||
495 | /* no error returns, they'd just make bus scanning stop */ | |
496 | static int __init | |
497 | tps65010_probe(struct i2c_adapter *bus, int address, int kind) | |
498 | { | |
499 | struct tps65010 *tps; | |
500 | int status; | |
9ded96f2 | 501 | unsigned long irqflags; |
72cd7995 DB |
502 | |
503 | if (the_tps) { | |
504 | dev_dbg(&bus->dev, "only one %s for now\n", DRIVER_NAME); | |
505 | return 0; | |
506 | } | |
507 | ||
5263ebb5 | 508 | tps = kzalloc(sizeof *tps, GFP_KERNEL); |
72cd7995 DB |
509 | if (!tps) |
510 | return 0; | |
511 | ||
5c085d36 | 512 | mutex_init(&tps->lock); |
8c1bc04e | 513 | INIT_DELAYED_WORK(&tps->work, tps65010_work); |
72cd7995 DB |
514 | tps->irq = -1; |
515 | tps->client.addr = address; | |
72cd7995 DB |
516 | tps->client.adapter = bus; |
517 | tps->client.driver = &tps65010_driver; | |
518 | strlcpy(tps->client.name, DRIVER_NAME, I2C_NAME_SIZE); | |
519 | ||
520 | status = i2c_attach_client(&tps->client); | |
521 | if (status < 0) { | |
522 | dev_dbg(&bus->dev, "can't attach %s to device %d, err %d\n", | |
523 | DRIVER_NAME, address, status); | |
65fc50e5 | 524 | goto fail1; |
72cd7995 DB |
525 | } |
526 | ||
4801bc25 DB |
527 | /* the IRQ is active low, but many gpio lines can't support that |
528 | * so this driver can use falling-edge triggers instead. | |
529 | */ | |
530 | irqflags = IRQF_SAMPLE_RANDOM; | |
72cd7995 DB |
531 | #ifdef CONFIG_ARM |
532 | if (machine_is_omap_h2()) { | |
533 | tps->model = TPS65010; | |
534 | omap_cfg_reg(W4_GPIO58); | |
535 | tps->irq = OMAP_GPIO_IRQ(58); | |
536 | omap_request_gpio(58); | |
537 | omap_set_gpio_direction(58, 1); | |
dace1453 | 538 | irqflags |= IRQF_TRIGGER_FALLING; |
72cd7995 DB |
539 | } |
540 | if (machine_is_omap_osk()) { | |
541 | tps->model = TPS65010; | |
542 | // omap_cfg_reg(U19_1610_MPUIO1); | |
543 | tps->irq = OMAP_GPIO_IRQ(OMAP_MPUIO(1)); | |
544 | omap_request_gpio(OMAP_MPUIO(1)); | |
545 | omap_set_gpio_direction(OMAP_MPUIO(1), 1); | |
dace1453 | 546 | irqflags |= IRQF_TRIGGER_FALLING; |
72cd7995 DB |
547 | } |
548 | if (machine_is_omap_h3()) { | |
549 | tps->model = TPS65013; | |
550 | ||
551 | // FIXME set up this board's IRQ ... | |
552 | } | |
72cd7995 DB |
553 | #endif |
554 | ||
555 | if (tps->irq > 0) { | |
72cd7995 | 556 | status = request_irq(tps->irq, tps65010_irq, |
9ded96f2 | 557 | irqflags, DRIVER_NAME, tps); |
72cd7995 DB |
558 | if (status < 0) { |
559 | dev_dbg(&tps->client.dev, "can't get IRQ %d, err %d\n", | |
560 | tps->irq, status); | |
561 | i2c_detach_client(&tps->client); | |
562 | goto fail1; | |
563 | } | |
564 | #ifdef CONFIG_ARM | |
565 | /* annoying race here, ideally we'd have an option | |
566 | * to claim the irq now and enable it later. | |
567 | */ | |
568 | disable_irq(tps->irq); | |
569 | set_bit(FLAG_IRQ_ENABLE, &tps->flags); | |
570 | #endif | |
571 | } else | |
572 | printk(KERN_WARNING "%s: IRQ not configured!\n", | |
573 | DRIVER_NAME); | |
574 | ||
575 | ||
576 | switch (tps->model) { | |
577 | case TPS65010: | |
578 | case TPS65012: | |
579 | tps->por = 1; | |
580 | break; | |
581 | case TPS_UNKNOWN: | |
582 | printk(KERN_WARNING "%s: unknown TPS chip\n", DRIVER_NAME); | |
583 | break; | |
584 | /* else CHGCONFIG.POR is replaced by AUA, enabling a WAIT mode */ | |
585 | } | |
586 | tps->chgconf = i2c_smbus_read_byte_data(&tps->client, TPS_CHGCONFIG); | |
587 | show_chgconfig(tps->por, "conf/init", tps->chgconf); | |
588 | ||
589 | show_chgstatus("chg/init", | |
590 | i2c_smbus_read_byte_data(&tps->client, TPS_CHGSTATUS)); | |
591 | show_regstatus("reg/init", | |
592 | i2c_smbus_read_byte_data(&tps->client, TPS_REGSTATUS)); | |
593 | ||
594 | pr_debug("%s: vdcdc1 0x%02x, vdcdc2 %02x, vregs1 %02x\n", DRIVER_NAME, | |
595 | i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC1), | |
596 | i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC2), | |
597 | i2c_smbus_read_byte_data(&tps->client, TPS_VREGS1)); | |
598 | pr_debug("%s: defgpio 0x%02x, mask3 0x%02x\n", DRIVER_NAME, | |
599 | i2c_smbus_read_byte_data(&tps->client, TPS_DEFGPIO), | |
600 | i2c_smbus_read_byte_data(&tps->client, TPS_MASK3)); | |
601 | ||
602 | tps65010_driver.attach_adapter = tps65010_noscan; | |
603 | the_tps = tps; | |
604 | ||
605 | #if defined(CONFIG_USB_GADGET) && !defined(CONFIG_USB_OTG) | |
606 | /* USB hosts can't draw VBUS. OTG devices could, later | |
607 | * when OTG infrastructure enables it. USB peripherals | |
608 | * could be relying on VBUS while booting, though. | |
609 | */ | |
610 | tps->vbus = 100; | |
611 | #endif | |
612 | ||
613 | /* unmask the "interesting" irqs, then poll once to | |
614 | * kickstart monitoring, initialize shadowed status | |
615 | * registers, and maybe disable VBUS draw. | |
616 | */ | |
617 | tps->nmask1 = ~0; | |
618 | (void) i2c_smbus_write_byte_data(&tps->client, TPS_MASK1, ~tps->nmask1); | |
619 | ||
620 | tps->nmask2 = TPS_REG_ONOFF; | |
621 | if (tps->model == TPS65013) | |
622 | tps->nmask2 |= TPS_REG_NO_CHG; | |
623 | (void) i2c_smbus_write_byte_data(&tps->client, TPS_MASK2, ~tps->nmask2); | |
624 | ||
625 | (void) i2c_smbus_write_byte_data(&tps->client, TPS_MASK3, 0x0f | |
626 | | i2c_smbus_read_byte_data(&tps->client, TPS_MASK3)); | |
627 | ||
8c1bc04e | 628 | tps65010_work(&tps->work.work); |
72cd7995 DB |
629 | |
630 | tps->file = debugfs_create_file(DRIVER_NAME, S_IRUGO, NULL, | |
631 | tps, DEBUG_FOPS); | |
632 | return 0; | |
65fc50e5 | 633 | fail1: |
634 | kfree(tps); | |
635 | return 0; | |
72cd7995 DB |
636 | } |
637 | ||
638 | static int __init tps65010_scan_bus(struct i2c_adapter *bus) | |
639 | { | |
640 | if (!i2c_check_functionality(bus, I2C_FUNC_SMBUS_BYTE_DATA)) | |
641 | return -EINVAL; | |
642 | return i2c_probe(bus, &addr_data, tps65010_probe); | |
643 | } | |
644 | ||
645 | static struct i2c_driver tps65010_driver = { | |
a9718b0c | 646 | .driver = { |
a9718b0c LR |
647 | .name = "tps65010", |
648 | }, | |
72cd7995 DB |
649 | .attach_adapter = tps65010_scan_bus, |
650 | .detach_client = __exit_p(tps65010_detach_client), | |
651 | }; | |
652 | ||
653 | /*-------------------------------------------------------------------------*/ | |
654 | ||
655 | /* Draw from VBUS: | |
656 | * 0 mA -- DON'T DRAW (might supply power instead) | |
657 | * 100 mA -- usb unit load (slowest charge rate) | |
658 | * 500 mA -- usb high power (fast battery charge) | |
659 | */ | |
660 | int tps65010_set_vbus_draw(unsigned mA) | |
661 | { | |
662 | unsigned long flags; | |
663 | ||
664 | if (!the_tps) | |
665 | return -ENODEV; | |
666 | ||
667 | /* assumes non-SMP */ | |
668 | local_irq_save(flags); | |
669 | if (mA >= 500) | |
670 | mA = 500; | |
671 | else if (mA >= 100) | |
672 | mA = 100; | |
673 | else | |
674 | mA = 0; | |
675 | the_tps->vbus = mA; | |
676 | if ((the_tps->chgstatus & TPS_CHG_USB) | |
677 | && test_and_set_bit( | |
678 | FLAG_VBUS_CHANGED, &the_tps->flags)) { | |
679 | /* gadget drivers call this in_irq() */ | |
8c1bc04e | 680 | (void) schedule_work(&the_tps->work.work); |
72cd7995 DB |
681 | } |
682 | local_irq_restore(flags); | |
683 | ||
684 | return 0; | |
685 | } | |
686 | EXPORT_SYMBOL(tps65010_set_vbus_draw); | |
687 | ||
688 | /*-------------------------------------------------------------------------*/ | |
689 | /* tps65010_set_gpio_out_value parameter: | |
690 | * gpio: GPIO1, GPIO2, GPIO3 or GPIO4 | |
691 | * value: LOW or HIGH | |
692 | */ | |
693 | int tps65010_set_gpio_out_value(unsigned gpio, unsigned value) | |
694 | { | |
695 | int status; | |
696 | unsigned defgpio; | |
697 | ||
698 | if (!the_tps) | |
699 | return -ENODEV; | |
700 | if ((gpio < GPIO1) || (gpio > GPIO4)) | |
701 | return -EINVAL; | |
702 | ||
5c085d36 | 703 | mutex_lock(&the_tps->lock); |
72cd7995 DB |
704 | |
705 | defgpio = i2c_smbus_read_byte_data(&the_tps->client, TPS_DEFGPIO); | |
706 | ||
707 | /* Configure GPIO for output */ | |
708 | defgpio |= 1 << (gpio + 3); | |
709 | ||
710 | /* Writing 1 forces a logic 0 on that GPIO and vice versa */ | |
711 | switch (value) { | |
712 | case LOW: | |
713 | defgpio |= 1 << (gpio - 1); /* set GPIO low by writing 1 */ | |
714 | break; | |
715 | /* case HIGH: */ | |
716 | default: | |
717 | defgpio &= ~(1 << (gpio - 1)); /* set GPIO high by writing 0 */ | |
718 | break; | |
719 | } | |
720 | ||
721 | status = i2c_smbus_write_byte_data(&the_tps->client, | |
722 | TPS_DEFGPIO, defgpio); | |
723 | ||
724 | pr_debug("%s: gpio%dout = %s, defgpio 0x%02x\n", DRIVER_NAME, | |
725 | gpio, value ? "high" : "low", | |
726 | i2c_smbus_read_byte_data(&the_tps->client, TPS_DEFGPIO)); | |
727 | ||
5c085d36 | 728 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
729 | return status; |
730 | } | |
731 | EXPORT_SYMBOL(tps65010_set_gpio_out_value); | |
732 | ||
733 | /*-------------------------------------------------------------------------*/ | |
734 | /* tps65010_set_led parameter: | |
735 | * led: LED1 or LED2 | |
736 | * mode: ON, OFF or BLINK | |
737 | */ | |
738 | int tps65010_set_led(unsigned led, unsigned mode) | |
739 | { | |
740 | int status; | |
741 | unsigned led_on, led_per, offs; | |
742 | ||
743 | if (!the_tps) | |
744 | return -ENODEV; | |
745 | ||
65fc50e5 | 746 | if (led == LED1) |
72cd7995 DB |
747 | offs = 0; |
748 | else { | |
749 | offs = 2; | |
750 | led = LED2; | |
751 | } | |
752 | ||
5c085d36 | 753 | mutex_lock(&the_tps->lock); |
72cd7995 | 754 | |
65fc50e5 | 755 | pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led, |
756 | i2c_smbus_read_byte_data(&the_tps->client, | |
757 | TPS_LED1_ON + offs)); | |
72cd7995 | 758 | |
65fc50e5 | 759 | pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led, |
760 | i2c_smbus_read_byte_data(&the_tps->client, | |
761 | TPS_LED1_PER + offs)); | |
72cd7995 DB |
762 | |
763 | switch (mode) { | |
764 | case OFF: | |
765 | led_on = 1 << 7; | |
766 | led_per = 0 << 7; | |
767 | break; | |
768 | case ON: | |
769 | led_on = 1 << 7; | |
770 | led_per = 1 << 7; | |
771 | break; | |
772 | case BLINK: | |
773 | led_on = 0x30 | (0 << 7); | |
774 | led_per = 0x08 | (1 << 7); | |
775 | break; | |
776 | default: | |
65fc50e5 | 777 | printk(KERN_ERR "%s: Wrong mode parameter for set_led()\n", |
72cd7995 | 778 | DRIVER_NAME); |
5c085d36 | 779 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
780 | return -EINVAL; |
781 | } | |
782 | ||
783 | status = i2c_smbus_write_byte_data(&the_tps->client, | |
784 | TPS_LED1_ON + offs, led_on); | |
785 | ||
786 | if (status != 0) { | |
787 | printk(KERN_ERR "%s: Failed to write led%i_on register\n", | |
788 | DRIVER_NAME, led); | |
5c085d36 | 789 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
790 | return status; |
791 | } | |
792 | ||
65fc50e5 | 793 | pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led, |
72cd7995 DB |
794 | i2c_smbus_read_byte_data(&the_tps->client, TPS_LED1_ON + offs)); |
795 | ||
796 | status = i2c_smbus_write_byte_data(&the_tps->client, | |
797 | TPS_LED1_PER + offs, led_per); | |
798 | ||
799 | if (status != 0) { | |
800 | printk(KERN_ERR "%s: Failed to write led%i_per register\n", | |
801 | DRIVER_NAME, led); | |
5c085d36 | 802 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
803 | return status; |
804 | } | |
805 | ||
65fc50e5 | 806 | pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led, |
807 | i2c_smbus_read_byte_data(&the_tps->client, | |
808 | TPS_LED1_PER + offs)); | |
72cd7995 | 809 | |
5c085d36 | 810 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
811 | |
812 | return status; | |
813 | } | |
814 | EXPORT_SYMBOL(tps65010_set_led); | |
815 | ||
816 | /*-------------------------------------------------------------------------*/ | |
817 | /* tps65010_set_vib parameter: | |
818 | * value: ON or OFF | |
819 | */ | |
820 | int tps65010_set_vib(unsigned value) | |
821 | { | |
822 | int status; | |
823 | unsigned vdcdc2; | |
824 | ||
825 | if (!the_tps) | |
826 | return -ENODEV; | |
827 | ||
5c085d36 | 828 | mutex_lock(&the_tps->lock); |
72cd7995 DB |
829 | |
830 | vdcdc2 = i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC2); | |
831 | vdcdc2 &= ~(1 << 1); | |
832 | if (value) | |
833 | vdcdc2 |= (1 << 1); | |
834 | status = i2c_smbus_write_byte_data(&the_tps->client, | |
835 | TPS_VDCDC2, vdcdc2); | |
836 | ||
837 | pr_debug("%s: vibrator %s\n", DRIVER_NAME, value ? "on" : "off"); | |
838 | ||
5c085d36 | 839 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
840 | return status; |
841 | } | |
842 | EXPORT_SYMBOL(tps65010_set_vib); | |
843 | ||
844 | /*-------------------------------------------------------------------------*/ | |
845 | /* tps65010_set_low_pwr parameter: | |
846 | * mode: ON or OFF | |
847 | */ | |
848 | int tps65010_set_low_pwr(unsigned mode) | |
849 | { | |
850 | int status; | |
851 | unsigned vdcdc1; | |
852 | ||
853 | if (!the_tps) | |
854 | return -ENODEV; | |
855 | ||
5c085d36 | 856 | mutex_lock(&the_tps->lock); |
72cd7995 DB |
857 | |
858 | pr_debug("%s: %s low_pwr, vdcdc1 0x%02x\n", DRIVER_NAME, | |
859 | mode ? "enable" : "disable", | |
860 | i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1)); | |
861 | ||
862 | vdcdc1 = i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1); | |
863 | ||
864 | switch (mode) { | |
865 | case OFF: | |
866 | vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */ | |
867 | break; | |
868 | /* case ON: */ | |
869 | default: | |
870 | vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */ | |
871 | break; | |
872 | } | |
873 | ||
874 | status = i2c_smbus_write_byte_data(&the_tps->client, | |
875 | TPS_VDCDC1, vdcdc1); | |
876 | ||
877 | if (status != 0) | |
878 | printk(KERN_ERR "%s: Failed to write vdcdc1 register\n", | |
65fc50e5 | 879 | DRIVER_NAME); |
72cd7995 DB |
880 | else |
881 | pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME, | |
882 | i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1)); | |
883 | ||
5c085d36 | 884 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
885 | |
886 | return status; | |
887 | } | |
888 | EXPORT_SYMBOL(tps65010_set_low_pwr); | |
889 | ||
890 | /*-------------------------------------------------------------------------*/ | |
891 | /* tps65010_config_vregs1 parameter: | |
892 | * value to be written to VREGS1 register | |
893 | * Note: The complete register is written, set all bits you need | |
894 | */ | |
895 | int tps65010_config_vregs1(unsigned value) | |
896 | { | |
897 | int status; | |
898 | ||
899 | if (!the_tps) | |
900 | return -ENODEV; | |
901 | ||
5c085d36 | 902 | mutex_lock(&the_tps->lock); |
72cd7995 DB |
903 | |
904 | pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME, | |
65fc50e5 | 905 | i2c_smbus_read_byte_data(&the_tps->client, TPS_VREGS1)); |
72cd7995 DB |
906 | |
907 | status = i2c_smbus_write_byte_data(&the_tps->client, | |
908 | TPS_VREGS1, value); | |
909 | ||
910 | if (status != 0) | |
911 | printk(KERN_ERR "%s: Failed to write vregs1 register\n", | |
65fc50e5 | 912 | DRIVER_NAME); |
72cd7995 DB |
913 | else |
914 | pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME, | |
915 | i2c_smbus_read_byte_data(&the_tps->client, TPS_VREGS1)); | |
916 | ||
5c085d36 | 917 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
918 | |
919 | return status; | |
920 | } | |
921 | EXPORT_SYMBOL(tps65010_config_vregs1); | |
922 | ||
923 | /*-------------------------------------------------------------------------*/ | |
924 | /* tps65013_set_low_pwr parameter: | |
925 | * mode: ON or OFF | |
926 | */ | |
927 | ||
928 | /* FIXME: Assumes AC or USB power is present. Setting AUA bit is not | |
929 | required if power supply is through a battery */ | |
930 | ||
931 | int tps65013_set_low_pwr(unsigned mode) | |
932 | { | |
933 | int status; | |
934 | unsigned vdcdc1, chgconfig; | |
935 | ||
936 | if (!the_tps || the_tps->por) | |
937 | return -ENODEV; | |
938 | ||
5c085d36 | 939 | mutex_lock(&the_tps->lock); |
72cd7995 DB |
940 | |
941 | pr_debug("%s: %s low_pwr, chgconfig 0x%02x vdcdc1 0x%02x\n", | |
942 | DRIVER_NAME, | |
943 | mode ? "enable" : "disable", | |
944 | i2c_smbus_read_byte_data(&the_tps->client, TPS_CHGCONFIG), | |
945 | i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1)); | |
946 | ||
947 | chgconfig = i2c_smbus_read_byte_data(&the_tps->client, TPS_CHGCONFIG); | |
948 | vdcdc1 = i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1); | |
949 | ||
950 | switch (mode) { | |
951 | case OFF: | |
952 | chgconfig &= ~TPS65013_AUA; /* disable AUA bit */ | |
953 | vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */ | |
954 | break; | |
955 | /* case ON: */ | |
956 | default: | |
957 | chgconfig |= TPS65013_AUA; /* enable AUA bit */ | |
958 | vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */ | |
959 | break; | |
960 | } | |
961 | ||
962 | status = i2c_smbus_write_byte_data(&the_tps->client, | |
963 | TPS_CHGCONFIG, chgconfig); | |
964 | if (status != 0) { | |
965 | printk(KERN_ERR "%s: Failed to write chconfig register\n", | |
966 | DRIVER_NAME); | |
5c085d36 | 967 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
968 | return status; |
969 | } | |
970 | ||
971 | chgconfig = i2c_smbus_read_byte_data(&the_tps->client, TPS_CHGCONFIG); | |
972 | the_tps->chgconf = chgconfig; | |
973 | show_chgconfig(0, "chgconf", chgconfig); | |
974 | ||
975 | status = i2c_smbus_write_byte_data(&the_tps->client, | |
976 | TPS_VDCDC1, vdcdc1); | |
977 | ||
978 | if (status != 0) | |
979 | printk(KERN_ERR "%s: Failed to write vdcdc1 register\n", | |
980 | DRIVER_NAME); | |
981 | else | |
982 | pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME, | |
983 | i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1)); | |
984 | ||
5c085d36 | 985 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
986 | |
987 | return status; | |
988 | } | |
989 | EXPORT_SYMBOL(tps65013_set_low_pwr); | |
990 | ||
991 | /*-------------------------------------------------------------------------*/ | |
992 | ||
993 | static int __init tps_init(void) | |
994 | { | |
995 | u32 tries = 3; | |
996 | int status = -ENODEV; | |
997 | ||
998 | printk(KERN_INFO "%s: version %s\n", DRIVER_NAME, DRIVER_VERSION); | |
999 | ||
1000 | /* some boards have startup glitches */ | |
1001 | while (tries--) { | |
1002 | status = i2c_add_driver(&tps65010_driver); | |
1003 | if (the_tps) | |
1004 | break; | |
1005 | i2c_del_driver(&tps65010_driver); | |
1006 | if (!tries) { | |
1007 | printk(KERN_ERR "%s: no chip?\n", DRIVER_NAME); | |
1008 | return -ENODEV; | |
1009 | } | |
1010 | pr_debug("%s: re-probe ...\n", DRIVER_NAME); | |
1011 | msleep(10); | |
1012 | } | |
1013 | ||
65fc50e5 | 1014 | #ifdef CONFIG_ARM |
72cd7995 DB |
1015 | if (machine_is_omap_osk()) { |
1016 | ||
1017 | // FIXME: More should be placed in the initialization code | |
1018 | // of the submodules (DSP, ethernet, power management, | |
1019 | // board-osk.c). Careful: I2C is initialized "late". | |
1020 | ||
1021 | /* Let LED1 (D9) blink */ | |
1022 | tps65010_set_led(LED1, BLINK); | |
1023 | ||
1024 | /* Disable LED 2 (D2) */ | |
1025 | tps65010_set_led(LED2, OFF); | |
1026 | ||
1027 | /* Set GPIO 1 HIGH to disable VBUS power supply; | |
1028 | * OHCI driver powers it up/down as needed. | |
1029 | */ | |
1030 | tps65010_set_gpio_out_value(GPIO1, HIGH); | |
1031 | ||
1032 | /* Set GPIO 2 low to turn on LED D3 */ | |
1033 | tps65010_set_gpio_out_value(GPIO2, HIGH); | |
1034 | ||
1035 | /* Set GPIO 3 low to take ethernet out of reset */ | |
1036 | tps65010_set_gpio_out_value(GPIO3, LOW); | |
1037 | ||
1038 | /* gpio4 for VDD_DSP */ | |
1039 | ||
1040 | /* Enable LOW_PWR */ | |
1041 | tps65010_set_low_pwr(ON); | |
1042 | ||
1043 | /* Switch VLDO2 to 3.0V for AIC23 */ | |
1044 | tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V | TPS_LDO1_ENABLE); | |
1045 | ||
1046 | } else if (machine_is_omap_h2()) { | |
1047 | /* gpio3 for SD, gpio4 for VDD_DSP */ | |
1048 | ||
1049 | /* Enable LOW_PWR */ | |
1050 | tps65010_set_low_pwr(ON); | |
1051 | } else if (machine_is_omap_h3()) { | |
1052 | /* gpio4 for SD, gpio3 for VDD_DSP */ | |
1053 | #ifdef CONFIG_PM | |
1054 | /* Enable LOW_PWR */ | |
1055 | tps65013_set_low_pwr(ON); | |
1056 | #endif | |
1057 | } | |
1058 | #endif | |
1059 | ||
1060 | return status; | |
1061 | } | |
1062 | /* NOTE: this MUST be initialized before the other parts of the system | |
1063 | * that rely on it ... but after the i2c bus on which this relies. | |
1064 | * That is, much earlier than on PC-type systems, which don't often use | |
1065 | * I2C as a core system bus. | |
1066 | */ | |
1067 | subsys_initcall(tps_init); | |
1068 | ||
1069 | static void __exit tps_exit(void) | |
1070 | { | |
1071 | i2c_del_driver(&tps65010_driver); | |
1072 | } | |
1073 | module_exit(tps_exit); | |
1074 |