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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 { | |
b5067f8f DB |
82 | struct i2c_client c; |
83 | struct i2c_client *client; | |
5c085d36 | 84 | struct mutex lock; |
72cd7995 | 85 | int irq; |
8c1bc04e | 86 | struct delayed_work work; |
72cd7995 DB |
87 | struct dentry *file; |
88 | unsigned charging:1; | |
89 | unsigned por:1; | |
90 | unsigned model:8; | |
91 | u16 vbus; | |
92 | unsigned long flags; | |
93 | #define FLAG_VBUS_CHANGED 0 | |
94 | #define FLAG_IRQ_ENABLE 1 | |
95 | ||
96 | /* copies of last register state */ | |
97 | u8 chgstatus, regstatus, chgconf; | |
98 | u8 nmask1, nmask2; | |
99 | ||
65fc50e5 | 100 | /* not currently tracking GPIO state */ |
72cd7995 DB |
101 | }; |
102 | ||
4801bc25 | 103 | #define POWER_POLL_DELAY msecs_to_jiffies(5000) |
72cd7995 DB |
104 | |
105 | /*-------------------------------------------------------------------------*/ | |
106 | ||
107 | #if defined(DEBUG) || defined(CONFIG_DEBUG_FS) | |
108 | ||
109 | static void dbg_chgstat(char *buf, size_t len, u8 chgstatus) | |
110 | { | |
111 | snprintf(buf, len, "%02x%s%s%s%s%s%s%s%s\n", | |
112 | chgstatus, | |
113 | (chgstatus & TPS_CHG_USB) ? " USB" : "", | |
114 | (chgstatus & TPS_CHG_AC) ? " AC" : "", | |
115 | (chgstatus & TPS_CHG_THERM) ? " therm" : "", | |
116 | (chgstatus & TPS_CHG_TERM) ? " done" : | |
117 | ((chgstatus & (TPS_CHG_USB|TPS_CHG_AC)) | |
118 | ? " (charging)" : ""), | |
119 | (chgstatus & TPS_CHG_TAPER_TMO) ? " taper_tmo" : "", | |
120 | (chgstatus & TPS_CHG_CHG_TMO) ? " charge_tmo" : "", | |
121 | (chgstatus & TPS_CHG_PRECHG_TMO) ? " prechg_tmo" : "", | |
122 | (chgstatus & TPS_CHG_TEMP_ERR) ? " temp_err" : ""); | |
123 | } | |
124 | ||
125 | static void dbg_regstat(char *buf, size_t len, u8 regstatus) | |
126 | { | |
127 | snprintf(buf, len, "%02x %s%s%s%s%s%s%s%s\n", | |
128 | regstatus, | |
129 | (regstatus & TPS_REG_ONOFF) ? "off" : "(on)", | |
130 | (regstatus & TPS_REG_COVER) ? " uncover" : "", | |
131 | (regstatus & TPS_REG_UVLO) ? " UVLO" : "", | |
132 | (regstatus & TPS_REG_NO_CHG) ? " NO_CHG" : "", | |
65fc50e5 | 133 | (regstatus & TPS_REG_PG_LD02) ? " ld02_bad" : "", |
72cd7995 DB |
134 | (regstatus & TPS_REG_PG_LD01) ? " ld01_bad" : "", |
135 | (regstatus & TPS_REG_PG_MAIN) ? " main_bad" : "", | |
136 | (regstatus & TPS_REG_PG_CORE) ? " core_bad" : ""); | |
137 | } | |
138 | ||
139 | static void dbg_chgconf(int por, char *buf, size_t len, u8 chgconfig) | |
140 | { | |
65fc50e5 | 141 | const char *hibit; |
72cd7995 DB |
142 | |
143 | if (por) | |
144 | hibit = (chgconfig & TPS_CHARGE_POR) | |
145 | ? "POR=69ms" : "POR=1sec"; | |
146 | else | |
147 | hibit = (chgconfig & TPS65013_AUA) ? "AUA" : ""; | |
148 | ||
149 | snprintf(buf, len, "%02x %s%s%s AC=%d%% USB=%dmA %sCharge\n", | |
150 | chgconfig, hibit, | |
151 | (chgconfig & TPS_CHARGE_RESET) ? " reset" : "", | |
152 | (chgconfig & TPS_CHARGE_FAST) ? " fast" : "", | |
153 | ({int p; switch ((chgconfig >> 3) & 3) { | |
154 | case 3: p = 100; break; | |
155 | case 2: p = 75; break; | |
156 | case 1: p = 50; break; | |
157 | default: p = 25; break; | |
158 | }; p; }), | |
159 | (chgconfig & TPS_VBUS_CHARGING) | |
160 | ? ((chgconfig & TPS_VBUS_500MA) ? 500 : 100) | |
161 | : 0, | |
162 | (chgconfig & TPS_CHARGE_ENABLE) ? "" : "No"); | |
163 | } | |
164 | ||
165 | #endif | |
166 | ||
167 | #ifdef DEBUG | |
168 | ||
169 | static void show_chgstatus(const char *label, u8 chgstatus) | |
170 | { | |
171 | char buf [100]; | |
172 | ||
173 | dbg_chgstat(buf, sizeof buf, chgstatus); | |
174 | pr_debug("%s: %s %s", DRIVER_NAME, label, buf); | |
175 | } | |
176 | ||
177 | static void show_regstatus(const char *label, u8 regstatus) | |
178 | { | |
179 | char buf [100]; | |
180 | ||
181 | dbg_regstat(buf, sizeof buf, regstatus); | |
182 | pr_debug("%s: %s %s", DRIVER_NAME, label, buf); | |
183 | } | |
184 | ||
185 | static void show_chgconfig(int por, const char *label, u8 chgconfig) | |
186 | { | |
187 | char buf [100]; | |
188 | ||
189 | dbg_chgconf(por, buf, sizeof buf, chgconfig); | |
190 | pr_debug("%s: %s %s", DRIVER_NAME, label, buf); | |
191 | } | |
192 | ||
193 | #else | |
194 | ||
195 | static inline void show_chgstatus(const char *label, u8 chgstatus) { } | |
196 | static inline void show_regstatus(const char *label, u8 chgstatus) { } | |
197 | static inline void show_chgconfig(int por, const char *label, u8 chgconfig) { } | |
198 | ||
199 | #endif | |
200 | ||
201 | #ifdef CONFIG_DEBUG_FS | |
202 | ||
203 | static int dbg_show(struct seq_file *s, void *_) | |
204 | { | |
205 | struct tps65010 *tps = s->private; | |
206 | u8 value, v2; | |
207 | unsigned i; | |
208 | char buf[100]; | |
209 | const char *chip; | |
210 | ||
211 | switch (tps->model) { | |
212 | case TPS65010: chip = "tps65010"; break; | |
213 | case TPS65011: chip = "tps65011"; break; | |
214 | case TPS65012: chip = "tps65012"; break; | |
215 | case TPS65013: chip = "tps65013"; break; | |
216 | default: chip = NULL; break; | |
217 | } | |
218 | seq_printf(s, "driver %s\nversion %s\nchip %s\n\n", | |
219 | DRIVER_NAME, DRIVER_VERSION, chip); | |
220 | ||
5c085d36 | 221 | mutex_lock(&tps->lock); |
72cd7995 DB |
222 | |
223 | /* FIXME how can we tell whether a battery is present? | |
224 | * likely involves a charge gauging chip (like BQ26501). | |
225 | */ | |
226 | ||
227 | seq_printf(s, "%scharging\n\n", tps->charging ? "" : "(not) "); | |
228 | ||
229 | ||
230 | /* registers for monitoring battery charging and status; note | |
231 | * that reading chgstat and regstat may ack IRQs... | |
232 | */ | |
b5067f8f | 233 | value = i2c_smbus_read_byte_data(tps->client, TPS_CHGCONFIG); |
72cd7995 DB |
234 | dbg_chgconf(tps->por, buf, sizeof buf, value); |
235 | seq_printf(s, "chgconfig %s", buf); | |
236 | ||
b5067f8f | 237 | value = i2c_smbus_read_byte_data(tps->client, TPS_CHGSTATUS); |
72cd7995 DB |
238 | dbg_chgstat(buf, sizeof buf, value); |
239 | seq_printf(s, "chgstat %s", buf); | |
b5067f8f | 240 | value = i2c_smbus_read_byte_data(tps->client, TPS_MASK1); |
72cd7995 DB |
241 | dbg_chgstat(buf, sizeof buf, value); |
242 | seq_printf(s, "mask1 %s", buf); | |
243 | /* ignore ackint1 */ | |
244 | ||
b5067f8f | 245 | value = i2c_smbus_read_byte_data(tps->client, TPS_REGSTATUS); |
72cd7995 DB |
246 | dbg_regstat(buf, sizeof buf, value); |
247 | seq_printf(s, "regstat %s", buf); | |
b5067f8f | 248 | value = i2c_smbus_read_byte_data(tps->client, TPS_MASK2); |
72cd7995 DB |
249 | dbg_regstat(buf, sizeof buf, value); |
250 | seq_printf(s, "mask2 %s\n", buf); | |
251 | /* ignore ackint2 */ | |
252 | ||
253 | (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY); | |
254 | ||
255 | ||
256 | /* VMAIN voltage, enable lowpower, etc */ | |
b5067f8f | 257 | value = i2c_smbus_read_byte_data(tps->client, TPS_VDCDC1); |
72cd7995 DB |
258 | seq_printf(s, "vdcdc1 %02x\n", value); |
259 | ||
260 | /* VCORE voltage, vibrator on/off */ | |
b5067f8f | 261 | value = i2c_smbus_read_byte_data(tps->client, TPS_VDCDC2); |
72cd7995 DB |
262 | seq_printf(s, "vdcdc2 %02x\n", value); |
263 | ||
264 | /* both LD0s, and their lowpower behavior */ | |
b5067f8f | 265 | value = i2c_smbus_read_byte_data(tps->client, TPS_VREGS1); |
72cd7995 DB |
266 | seq_printf(s, "vregs1 %02x\n\n", value); |
267 | ||
268 | ||
269 | /* LEDs and GPIOs */ | |
b5067f8f DB |
270 | value = i2c_smbus_read_byte_data(tps->client, TPS_LED1_ON); |
271 | v2 = i2c_smbus_read_byte_data(tps->client, TPS_LED1_PER); | |
72cd7995 DB |
272 | seq_printf(s, "led1 %s, on=%02x, per=%02x, %d/%d msec\n", |
273 | (value & 0x80) | |
274 | ? ((v2 & 0x80) ? "on" : "off") | |
275 | : ((v2 & 0x80) ? "blink" : "(nPG)"), | |
276 | value, v2, | |
277 | (value & 0x7f) * 10, (v2 & 0x7f) * 100); | |
278 | ||
b5067f8f DB |
279 | value = i2c_smbus_read_byte_data(tps->client, TPS_LED2_ON); |
280 | v2 = i2c_smbus_read_byte_data(tps->client, TPS_LED2_PER); | |
72cd7995 DB |
281 | seq_printf(s, "led2 %s, on=%02x, per=%02x, %d/%d msec\n", |
282 | (value & 0x80) | |
283 | ? ((v2 & 0x80) ? "on" : "off") | |
284 | : ((v2 & 0x80) ? "blink" : "off"), | |
285 | value, v2, | |
286 | (value & 0x7f) * 10, (v2 & 0x7f) * 100); | |
287 | ||
b5067f8f DB |
288 | value = i2c_smbus_read_byte_data(tps->client, TPS_DEFGPIO); |
289 | v2 = i2c_smbus_read_byte_data(tps->client, TPS_MASK3); | |
72cd7995 DB |
290 | seq_printf(s, "defgpio %02x mask3 %02x\n", value, v2); |
291 | ||
292 | for (i = 0; i < 4; i++) { | |
65fc50e5 | 293 | if (value & (1 << (4 + i))) |
72cd7995 DB |
294 | seq_printf(s, " gpio%d-out %s\n", i + 1, |
295 | (value & (1 << i)) ? "low" : "hi "); | |
296 | else | |
297 | seq_printf(s, " gpio%d-in %s %s %s\n", i + 1, | |
298 | (value & (1 << i)) ? "hi " : "low", | |
299 | (v2 & (1 << i)) ? "no-irq" : "irq", | |
300 | (v2 & (1 << (4 + i))) ? "rising" : "falling"); | |
301 | } | |
302 | ||
5c085d36 | 303 | mutex_unlock(&tps->lock); |
72cd7995 DB |
304 | return 0; |
305 | } | |
306 | ||
307 | static int dbg_tps_open(struct inode *inode, struct file *file) | |
308 | { | |
8e18e294 | 309 | return single_open(file, dbg_show, inode->i_private); |
72cd7995 DB |
310 | } |
311 | ||
2b8693c0 | 312 | static const struct file_operations debug_fops = { |
72cd7995 DB |
313 | .open = dbg_tps_open, |
314 | .read = seq_read, | |
315 | .llseek = seq_lseek, | |
316 | .release = single_release, | |
317 | }; | |
318 | ||
319 | #define DEBUG_FOPS &debug_fops | |
320 | ||
321 | #else | |
322 | #define DEBUG_FOPS NULL | |
323 | #endif | |
324 | ||
325 | /*-------------------------------------------------------------------------*/ | |
326 | ||
327 | /* handle IRQS in a task context, so we can use I2C calls */ | |
328 | static void tps65010_interrupt(struct tps65010 *tps) | |
329 | { | |
330 | u8 tmp = 0, mask, poll; | |
331 | ||
8c1bc04e | 332 | /* IRQs won't trigger for certain events, but we can get |
72cd7995 DB |
333 | * others by polling (normally, with external power applied). |
334 | */ | |
335 | poll = 0; | |
336 | ||
337 | /* regstatus irqs */ | |
338 | if (tps->nmask2) { | |
b5067f8f | 339 | tmp = i2c_smbus_read_byte_data(tps->client, TPS_REGSTATUS); |
72cd7995 DB |
340 | mask = tmp ^ tps->regstatus; |
341 | tps->regstatus = tmp; | |
342 | mask &= tps->nmask2; | |
343 | } else | |
344 | mask = 0; | |
345 | if (mask) { | |
346 | tps->regstatus = tmp; | |
347 | /* may need to shut something down ... */ | |
348 | ||
349 | /* "off" usually means deep sleep */ | |
350 | if (tmp & TPS_REG_ONOFF) { | |
351 | pr_info("%s: power off button\n", DRIVER_NAME); | |
352 | #if 0 | |
353 | /* REVISIT: this might need its own workqueue | |
354 | * plus tweaks including deadlock avoidance ... | |
ab3bfca7 | 355 | * also needs to get error handling and probably |
b0cb1a19 | 356 | * an #ifdef CONFIG_HIBERNATION |
72cd7995 | 357 | */ |
a3d25c27 | 358 | hibernate(); |
72cd7995 DB |
359 | #endif |
360 | poll = 1; | |
361 | } | |
362 | } | |
363 | ||
364 | /* chgstatus irqs */ | |
365 | if (tps->nmask1) { | |
b5067f8f | 366 | tmp = i2c_smbus_read_byte_data(tps->client, TPS_CHGSTATUS); |
72cd7995 DB |
367 | mask = tmp ^ tps->chgstatus; |
368 | tps->chgstatus = tmp; | |
369 | mask &= tps->nmask1; | |
370 | } else | |
371 | mask = 0; | |
372 | if (mask) { | |
373 | unsigned charging = 0; | |
374 | ||
375 | show_chgstatus("chg/irq", tmp); | |
376 | if (tmp & (TPS_CHG_USB|TPS_CHG_AC)) | |
377 | show_chgconfig(tps->por, "conf", tps->chgconf); | |
378 | ||
379 | /* Unless it was turned off or disabled, we charge any | |
380 | * battery whenever there's power available for it | |
381 | * and the charger hasn't been disabled. | |
382 | */ | |
383 | if (!(tps->chgstatus & ~(TPS_CHG_USB|TPS_CHG_AC)) | |
384 | && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)) | |
385 | && (tps->chgconf & TPS_CHARGE_ENABLE) | |
386 | ) { | |
387 | if (tps->chgstatus & TPS_CHG_USB) { | |
388 | /* VBUS options are readonly until reconnect */ | |
389 | if (mask & TPS_CHG_USB) | |
390 | set_bit(FLAG_VBUS_CHANGED, &tps->flags); | |
391 | charging = 1; | |
392 | } else if (tps->chgstatus & TPS_CHG_AC) | |
393 | charging = 1; | |
394 | } | |
395 | if (charging != tps->charging) { | |
396 | tps->charging = charging; | |
397 | pr_info("%s: battery %scharging\n", | |
398 | DRIVER_NAME, charging ? "" : | |
399 | ((tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)) | |
400 | ? "NOT " : "dis")); | |
401 | } | |
402 | } | |
403 | ||
404 | /* always poll to detect (a) power removal, without tps65013 | |
405 | * NO_CHG IRQ; or (b) restart of charging after stop. | |
406 | */ | |
407 | if ((tps->model != TPS65013 || !tps->charging) | |
408 | && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))) | |
409 | poll = 1; | |
410 | if (poll) | |
411 | (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY); | |
412 | ||
413 | /* also potentially gpio-in rise or fall */ | |
414 | } | |
415 | ||
416 | /* handle IRQs and polling using keventd for now */ | |
8c1bc04e | 417 | static void tps65010_work(struct work_struct *work) |
72cd7995 | 418 | { |
8c1bc04e | 419 | struct tps65010 *tps; |
72cd7995 | 420 | |
8c1bc04e | 421 | tps = container_of(work, struct tps65010, work.work); |
5c085d36 | 422 | mutex_lock(&tps->lock); |
72cd7995 DB |
423 | |
424 | tps65010_interrupt(tps); | |
425 | ||
426 | if (test_and_clear_bit(FLAG_VBUS_CHANGED, &tps->flags)) { | |
427 | int status; | |
428 | u8 chgconfig, tmp; | |
429 | ||
b5067f8f | 430 | chgconfig = i2c_smbus_read_byte_data(tps->client, |
72cd7995 DB |
431 | TPS_CHGCONFIG); |
432 | chgconfig &= ~(TPS_VBUS_500MA | TPS_VBUS_CHARGING); | |
433 | if (tps->vbus == 500) | |
434 | chgconfig |= TPS_VBUS_500MA | TPS_VBUS_CHARGING; | |
435 | else if (tps->vbus >= 100) | |
436 | chgconfig |= TPS_VBUS_CHARGING; | |
437 | ||
b5067f8f | 438 | status = i2c_smbus_write_byte_data(tps->client, |
72cd7995 DB |
439 | TPS_CHGCONFIG, chgconfig); |
440 | ||
441 | /* vbus update fails unless VBUS is connected! */ | |
b5067f8f | 442 | tmp = i2c_smbus_read_byte_data(tps->client, TPS_CHGCONFIG); |
72cd7995 DB |
443 | tps->chgconf = tmp; |
444 | show_chgconfig(tps->por, "update vbus", tmp); | |
445 | } | |
446 | ||
447 | if (test_and_clear_bit(FLAG_IRQ_ENABLE, &tps->flags)) | |
448 | enable_irq(tps->irq); | |
449 | ||
5c085d36 | 450 | mutex_unlock(&tps->lock); |
72cd7995 DB |
451 | } |
452 | ||
7d12e780 | 453 | static irqreturn_t tps65010_irq(int irq, void *_tps) |
72cd7995 DB |
454 | { |
455 | struct tps65010 *tps = _tps; | |
456 | ||
457 | disable_irq_nosync(irq); | |
458 | set_bit(FLAG_IRQ_ENABLE, &tps->flags); | |
8c1bc04e | 459 | (void) schedule_work(&tps->work.work); |
72cd7995 DB |
460 | return IRQ_HANDLED; |
461 | } | |
462 | ||
463 | /*-------------------------------------------------------------------------*/ | |
464 | ||
465 | static struct tps65010 *the_tps; | |
466 | ||
467 | static int __exit tps65010_detach_client(struct i2c_client *client) | |
468 | { | |
469 | struct tps65010 *tps; | |
470 | ||
b5067f8f | 471 | tps = container_of(client, struct tps65010, c); |
8c1bc04e | 472 | free_irq(tps->irq, tps); |
72cd7995 DB |
473 | #ifdef CONFIG_ARM |
474 | if (machine_is_omap_h2()) | |
475 | omap_free_gpio(58); | |
476 | if (machine_is_omap_osk()) | |
477 | omap_free_gpio(OMAP_MPUIO(1)); | |
478 | #endif | |
8c1bc04e DB |
479 | cancel_delayed_work(&tps->work); |
480 | flush_scheduled_work(); | |
72cd7995 DB |
481 | debugfs_remove(tps->file); |
482 | if (i2c_detach_client(client) == 0) | |
483 | kfree(tps); | |
65fc50e5 | 484 | the_tps = NULL; |
72cd7995 DB |
485 | return 0; |
486 | } | |
487 | ||
488 | static int tps65010_noscan(struct i2c_adapter *bus) | |
489 | { | |
490 | /* pure paranoia, in case someone adds another i2c bus | |
491 | * after our init section's gone... | |
492 | */ | |
493 | return -ENODEV; | |
494 | } | |
495 | ||
496 | /* no error returns, they'd just make bus scanning stop */ | |
497 | static int __init | |
498 | tps65010_probe(struct i2c_adapter *bus, int address, int kind) | |
499 | { | |
500 | struct tps65010 *tps; | |
501 | int status; | |
9ded96f2 | 502 | unsigned long irqflags; |
b5067f8f | 503 | struct i2c_client *client; |
72cd7995 DB |
504 | |
505 | if (the_tps) { | |
506 | dev_dbg(&bus->dev, "only one %s for now\n", DRIVER_NAME); | |
507 | return 0; | |
508 | } | |
509 | ||
5263ebb5 | 510 | tps = kzalloc(sizeof *tps, GFP_KERNEL); |
72cd7995 DB |
511 | if (!tps) |
512 | return 0; | |
513 | ||
5c085d36 | 514 | mutex_init(&tps->lock); |
8c1bc04e | 515 | INIT_DELAYED_WORK(&tps->work, tps65010_work); |
72cd7995 | 516 | tps->irq = -1; |
b5067f8f DB |
517 | tps->c.addr = address; |
518 | tps->c.adapter = bus; | |
519 | tps->c.driver = &tps65010_driver; | |
520 | strlcpy(tps->c.name, DRIVER_NAME, I2C_NAME_SIZE); | |
521 | tps->client = client = &tps->c; | |
72cd7995 | 522 | |
b5067f8f | 523 | status = i2c_attach_client(client); |
72cd7995 DB |
524 | if (status < 0) { |
525 | dev_dbg(&bus->dev, "can't attach %s to device %d, err %d\n", | |
526 | DRIVER_NAME, address, status); | |
65fc50e5 | 527 | goto fail1; |
72cd7995 DB |
528 | } |
529 | ||
4801bc25 DB |
530 | /* the IRQ is active low, but many gpio lines can't support that |
531 | * so this driver can use falling-edge triggers instead. | |
532 | */ | |
533 | irqflags = IRQF_SAMPLE_RANDOM; | |
72cd7995 DB |
534 | #ifdef CONFIG_ARM |
535 | if (machine_is_omap_h2()) { | |
536 | tps->model = TPS65010; | |
537 | omap_cfg_reg(W4_GPIO58); | |
538 | tps->irq = OMAP_GPIO_IRQ(58); | |
539 | omap_request_gpio(58); | |
540 | omap_set_gpio_direction(58, 1); | |
dace1453 | 541 | irqflags |= IRQF_TRIGGER_FALLING; |
72cd7995 DB |
542 | } |
543 | if (machine_is_omap_osk()) { | |
544 | tps->model = TPS65010; | |
545 | // omap_cfg_reg(U19_1610_MPUIO1); | |
546 | tps->irq = OMAP_GPIO_IRQ(OMAP_MPUIO(1)); | |
547 | omap_request_gpio(OMAP_MPUIO(1)); | |
548 | omap_set_gpio_direction(OMAP_MPUIO(1), 1); | |
dace1453 | 549 | irqflags |= IRQF_TRIGGER_FALLING; |
72cd7995 DB |
550 | } |
551 | if (machine_is_omap_h3()) { | |
552 | tps->model = TPS65013; | |
553 | ||
554 | // FIXME set up this board's IRQ ... | |
555 | } | |
72cd7995 DB |
556 | #endif |
557 | ||
558 | if (tps->irq > 0) { | |
72cd7995 | 559 | status = request_irq(tps->irq, tps65010_irq, |
9ded96f2 | 560 | irqflags, DRIVER_NAME, tps); |
72cd7995 | 561 | if (status < 0) { |
b5067f8f | 562 | dev_dbg(&client->dev, "can't get IRQ %d, err %d\n", |
72cd7995 | 563 | tps->irq, status); |
b5067f8f | 564 | i2c_detach_client(client); |
72cd7995 DB |
565 | goto fail1; |
566 | } | |
567 | #ifdef CONFIG_ARM | |
568 | /* annoying race here, ideally we'd have an option | |
569 | * to claim the irq now and enable it later. | |
570 | */ | |
571 | disable_irq(tps->irq); | |
572 | set_bit(FLAG_IRQ_ENABLE, &tps->flags); | |
573 | #endif | |
574 | } else | |
575 | printk(KERN_WARNING "%s: IRQ not configured!\n", | |
576 | DRIVER_NAME); | |
577 | ||
578 | ||
579 | switch (tps->model) { | |
580 | case TPS65010: | |
581 | case TPS65012: | |
582 | tps->por = 1; | |
583 | break; | |
584 | case TPS_UNKNOWN: | |
585 | printk(KERN_WARNING "%s: unknown TPS chip\n", DRIVER_NAME); | |
586 | break; | |
587 | /* else CHGCONFIG.POR is replaced by AUA, enabling a WAIT mode */ | |
588 | } | |
b5067f8f | 589 | tps->chgconf = i2c_smbus_read_byte_data(client, TPS_CHGCONFIG); |
72cd7995 DB |
590 | show_chgconfig(tps->por, "conf/init", tps->chgconf); |
591 | ||
592 | show_chgstatus("chg/init", | |
b5067f8f | 593 | i2c_smbus_read_byte_data(client, TPS_CHGSTATUS)); |
72cd7995 | 594 | show_regstatus("reg/init", |
b5067f8f | 595 | i2c_smbus_read_byte_data(client, TPS_REGSTATUS)); |
72cd7995 DB |
596 | |
597 | pr_debug("%s: vdcdc1 0x%02x, vdcdc2 %02x, vregs1 %02x\n", DRIVER_NAME, | |
b5067f8f DB |
598 | i2c_smbus_read_byte_data(client, TPS_VDCDC1), |
599 | i2c_smbus_read_byte_data(client, TPS_VDCDC2), | |
600 | i2c_smbus_read_byte_data(client, TPS_VREGS1)); | |
72cd7995 | 601 | pr_debug("%s: defgpio 0x%02x, mask3 0x%02x\n", DRIVER_NAME, |
b5067f8f DB |
602 | i2c_smbus_read_byte_data(client, TPS_DEFGPIO), |
603 | i2c_smbus_read_byte_data(client, TPS_MASK3)); | |
72cd7995 DB |
604 | |
605 | tps65010_driver.attach_adapter = tps65010_noscan; | |
606 | the_tps = tps; | |
607 | ||
608 | #if defined(CONFIG_USB_GADGET) && !defined(CONFIG_USB_OTG) | |
609 | /* USB hosts can't draw VBUS. OTG devices could, later | |
610 | * when OTG infrastructure enables it. USB peripherals | |
611 | * could be relying on VBUS while booting, though. | |
612 | */ | |
613 | tps->vbus = 100; | |
614 | #endif | |
615 | ||
616 | /* unmask the "interesting" irqs, then poll once to | |
617 | * kickstart monitoring, initialize shadowed status | |
618 | * registers, and maybe disable VBUS draw. | |
619 | */ | |
620 | tps->nmask1 = ~0; | |
b5067f8f | 621 | (void) i2c_smbus_write_byte_data(client, TPS_MASK1, ~tps->nmask1); |
72cd7995 DB |
622 | |
623 | tps->nmask2 = TPS_REG_ONOFF; | |
624 | if (tps->model == TPS65013) | |
625 | tps->nmask2 |= TPS_REG_NO_CHG; | |
b5067f8f | 626 | (void) i2c_smbus_write_byte_data(client, TPS_MASK2, ~tps->nmask2); |
72cd7995 | 627 | |
b5067f8f DB |
628 | (void) i2c_smbus_write_byte_data(client, TPS_MASK3, 0x0f |
629 | | i2c_smbus_read_byte_data(client, TPS_MASK3)); | |
72cd7995 | 630 | |
8c1bc04e | 631 | tps65010_work(&tps->work.work); |
72cd7995 DB |
632 | |
633 | tps->file = debugfs_create_file(DRIVER_NAME, S_IRUGO, NULL, | |
634 | tps, DEBUG_FOPS); | |
635 | return 0; | |
65fc50e5 DB |
636 | fail1: |
637 | kfree(tps); | |
638 | return 0; | |
72cd7995 DB |
639 | } |
640 | ||
641 | static int __init tps65010_scan_bus(struct i2c_adapter *bus) | |
642 | { | |
643 | if (!i2c_check_functionality(bus, I2C_FUNC_SMBUS_BYTE_DATA)) | |
644 | return -EINVAL; | |
645 | return i2c_probe(bus, &addr_data, tps65010_probe); | |
646 | } | |
647 | ||
648 | static struct i2c_driver tps65010_driver = { | |
a9718b0c | 649 | .driver = { |
a9718b0c LR |
650 | .name = "tps65010", |
651 | }, | |
72cd7995 DB |
652 | .attach_adapter = tps65010_scan_bus, |
653 | .detach_client = __exit_p(tps65010_detach_client), | |
654 | }; | |
655 | ||
656 | /*-------------------------------------------------------------------------*/ | |
657 | ||
658 | /* Draw from VBUS: | |
659 | * 0 mA -- DON'T DRAW (might supply power instead) | |
660 | * 100 mA -- usb unit load (slowest charge rate) | |
661 | * 500 mA -- usb high power (fast battery charge) | |
662 | */ | |
663 | int tps65010_set_vbus_draw(unsigned mA) | |
664 | { | |
665 | unsigned long flags; | |
666 | ||
667 | if (!the_tps) | |
668 | return -ENODEV; | |
669 | ||
670 | /* assumes non-SMP */ | |
671 | local_irq_save(flags); | |
672 | if (mA >= 500) | |
673 | mA = 500; | |
674 | else if (mA >= 100) | |
675 | mA = 100; | |
676 | else | |
677 | mA = 0; | |
678 | the_tps->vbus = mA; | |
679 | if ((the_tps->chgstatus & TPS_CHG_USB) | |
680 | && test_and_set_bit( | |
681 | FLAG_VBUS_CHANGED, &the_tps->flags)) { | |
682 | /* gadget drivers call this in_irq() */ | |
8c1bc04e | 683 | (void) schedule_work(&the_tps->work.work); |
72cd7995 DB |
684 | } |
685 | local_irq_restore(flags); | |
686 | ||
687 | return 0; | |
688 | } | |
689 | EXPORT_SYMBOL(tps65010_set_vbus_draw); | |
690 | ||
691 | /*-------------------------------------------------------------------------*/ | |
692 | /* tps65010_set_gpio_out_value parameter: | |
693 | * gpio: GPIO1, GPIO2, GPIO3 or GPIO4 | |
694 | * value: LOW or HIGH | |
695 | */ | |
696 | int tps65010_set_gpio_out_value(unsigned gpio, unsigned value) | |
697 | { | |
698 | int status; | |
699 | unsigned defgpio; | |
700 | ||
701 | if (!the_tps) | |
702 | return -ENODEV; | |
703 | if ((gpio < GPIO1) || (gpio > GPIO4)) | |
704 | return -EINVAL; | |
705 | ||
5c085d36 | 706 | mutex_lock(&the_tps->lock); |
72cd7995 | 707 | |
b5067f8f | 708 | defgpio = i2c_smbus_read_byte_data(the_tps->client, TPS_DEFGPIO); |
72cd7995 DB |
709 | |
710 | /* Configure GPIO for output */ | |
711 | defgpio |= 1 << (gpio + 3); | |
712 | ||
713 | /* Writing 1 forces a logic 0 on that GPIO and vice versa */ | |
714 | switch (value) { | |
715 | case LOW: | |
716 | defgpio |= 1 << (gpio - 1); /* set GPIO low by writing 1 */ | |
717 | break; | |
718 | /* case HIGH: */ | |
719 | default: | |
720 | defgpio &= ~(1 << (gpio - 1)); /* set GPIO high by writing 0 */ | |
721 | break; | |
722 | } | |
723 | ||
b5067f8f | 724 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
725 | TPS_DEFGPIO, defgpio); |
726 | ||
727 | pr_debug("%s: gpio%dout = %s, defgpio 0x%02x\n", DRIVER_NAME, | |
728 | gpio, value ? "high" : "low", | |
b5067f8f | 729 | i2c_smbus_read_byte_data(the_tps->client, TPS_DEFGPIO)); |
72cd7995 | 730 | |
5c085d36 | 731 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
732 | return status; |
733 | } | |
734 | EXPORT_SYMBOL(tps65010_set_gpio_out_value); | |
735 | ||
736 | /*-------------------------------------------------------------------------*/ | |
737 | /* tps65010_set_led parameter: | |
738 | * led: LED1 or LED2 | |
739 | * mode: ON, OFF or BLINK | |
740 | */ | |
741 | int tps65010_set_led(unsigned led, unsigned mode) | |
742 | { | |
743 | int status; | |
744 | unsigned led_on, led_per, offs; | |
745 | ||
746 | if (!the_tps) | |
747 | return -ENODEV; | |
748 | ||
65fc50e5 | 749 | if (led == LED1) |
72cd7995 DB |
750 | offs = 0; |
751 | else { | |
752 | offs = 2; | |
753 | led = LED2; | |
754 | } | |
755 | ||
5c085d36 | 756 | mutex_lock(&the_tps->lock); |
72cd7995 | 757 | |
65fc50e5 | 758 | pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led, |
b5067f8f | 759 | i2c_smbus_read_byte_data(the_tps->client, |
65fc50e5 | 760 | TPS_LED1_ON + offs)); |
72cd7995 | 761 | |
65fc50e5 | 762 | pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led, |
b5067f8f | 763 | i2c_smbus_read_byte_data(the_tps->client, |
65fc50e5 | 764 | TPS_LED1_PER + offs)); |
72cd7995 DB |
765 | |
766 | switch (mode) { | |
767 | case OFF: | |
768 | led_on = 1 << 7; | |
769 | led_per = 0 << 7; | |
770 | break; | |
771 | case ON: | |
772 | led_on = 1 << 7; | |
773 | led_per = 1 << 7; | |
774 | break; | |
775 | case BLINK: | |
776 | led_on = 0x30 | (0 << 7); | |
777 | led_per = 0x08 | (1 << 7); | |
778 | break; | |
779 | default: | |
65fc50e5 | 780 | printk(KERN_ERR "%s: Wrong mode parameter for set_led()\n", |
72cd7995 | 781 | DRIVER_NAME); |
5c085d36 | 782 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
783 | return -EINVAL; |
784 | } | |
785 | ||
b5067f8f | 786 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
787 | TPS_LED1_ON + offs, led_on); |
788 | ||
789 | if (status != 0) { | |
790 | printk(KERN_ERR "%s: Failed to write led%i_on register\n", | |
791 | DRIVER_NAME, led); | |
5c085d36 | 792 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
793 | return status; |
794 | } | |
795 | ||
65fc50e5 | 796 | pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led, |
b5067f8f | 797 | i2c_smbus_read_byte_data(the_tps->client, TPS_LED1_ON + offs)); |
72cd7995 | 798 | |
b5067f8f | 799 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
800 | TPS_LED1_PER + offs, led_per); |
801 | ||
802 | if (status != 0) { | |
803 | printk(KERN_ERR "%s: Failed to write led%i_per register\n", | |
804 | DRIVER_NAME, led); | |
5c085d36 | 805 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
806 | return status; |
807 | } | |
808 | ||
65fc50e5 | 809 | pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led, |
b5067f8f | 810 | i2c_smbus_read_byte_data(the_tps->client, |
65fc50e5 | 811 | TPS_LED1_PER + offs)); |
72cd7995 | 812 | |
5c085d36 | 813 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
814 | |
815 | return status; | |
816 | } | |
817 | EXPORT_SYMBOL(tps65010_set_led); | |
818 | ||
819 | /*-------------------------------------------------------------------------*/ | |
820 | /* tps65010_set_vib parameter: | |
821 | * value: ON or OFF | |
822 | */ | |
823 | int tps65010_set_vib(unsigned value) | |
824 | { | |
825 | int status; | |
826 | unsigned vdcdc2; | |
827 | ||
828 | if (!the_tps) | |
829 | return -ENODEV; | |
830 | ||
5c085d36 | 831 | mutex_lock(&the_tps->lock); |
72cd7995 | 832 | |
b5067f8f | 833 | vdcdc2 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC2); |
72cd7995 DB |
834 | vdcdc2 &= ~(1 << 1); |
835 | if (value) | |
836 | vdcdc2 |= (1 << 1); | |
b5067f8f | 837 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
838 | TPS_VDCDC2, vdcdc2); |
839 | ||
840 | pr_debug("%s: vibrator %s\n", DRIVER_NAME, value ? "on" : "off"); | |
841 | ||
5c085d36 | 842 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
843 | return status; |
844 | } | |
845 | EXPORT_SYMBOL(tps65010_set_vib); | |
846 | ||
847 | /*-------------------------------------------------------------------------*/ | |
848 | /* tps65010_set_low_pwr parameter: | |
849 | * mode: ON or OFF | |
850 | */ | |
851 | int tps65010_set_low_pwr(unsigned mode) | |
852 | { | |
853 | int status; | |
854 | unsigned vdcdc1; | |
855 | ||
856 | if (!the_tps) | |
857 | return -ENODEV; | |
858 | ||
5c085d36 | 859 | mutex_lock(&the_tps->lock); |
72cd7995 DB |
860 | |
861 | pr_debug("%s: %s low_pwr, vdcdc1 0x%02x\n", DRIVER_NAME, | |
862 | mode ? "enable" : "disable", | |
b5067f8f | 863 | i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1)); |
72cd7995 | 864 | |
b5067f8f | 865 | vdcdc1 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1); |
72cd7995 DB |
866 | |
867 | switch (mode) { | |
868 | case OFF: | |
869 | vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */ | |
870 | break; | |
871 | /* case ON: */ | |
872 | default: | |
873 | vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */ | |
874 | break; | |
875 | } | |
876 | ||
b5067f8f | 877 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
878 | TPS_VDCDC1, vdcdc1); |
879 | ||
880 | if (status != 0) | |
881 | printk(KERN_ERR "%s: Failed to write vdcdc1 register\n", | |
65fc50e5 | 882 | DRIVER_NAME); |
72cd7995 DB |
883 | else |
884 | pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME, | |
b5067f8f | 885 | i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1)); |
72cd7995 | 886 | |
5c085d36 | 887 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
888 | |
889 | return status; | |
890 | } | |
891 | EXPORT_SYMBOL(tps65010_set_low_pwr); | |
892 | ||
893 | /*-------------------------------------------------------------------------*/ | |
894 | /* tps65010_config_vregs1 parameter: | |
895 | * value to be written to VREGS1 register | |
896 | * Note: The complete register is written, set all bits you need | |
897 | */ | |
898 | int tps65010_config_vregs1(unsigned value) | |
899 | { | |
900 | int status; | |
901 | ||
902 | if (!the_tps) | |
903 | return -ENODEV; | |
904 | ||
5c085d36 | 905 | mutex_lock(&the_tps->lock); |
72cd7995 DB |
906 | |
907 | pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME, | |
b5067f8f | 908 | i2c_smbus_read_byte_data(the_tps->client, TPS_VREGS1)); |
72cd7995 | 909 | |
b5067f8f | 910 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
911 | TPS_VREGS1, value); |
912 | ||
913 | if (status != 0) | |
914 | printk(KERN_ERR "%s: Failed to write vregs1 register\n", | |
65fc50e5 | 915 | DRIVER_NAME); |
72cd7995 DB |
916 | else |
917 | pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME, | |
b5067f8f | 918 | i2c_smbus_read_byte_data(the_tps->client, TPS_VREGS1)); |
72cd7995 | 919 | |
5c085d36 | 920 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
921 | |
922 | return status; | |
923 | } | |
924 | EXPORT_SYMBOL(tps65010_config_vregs1); | |
925 | ||
926 | /*-------------------------------------------------------------------------*/ | |
927 | /* tps65013_set_low_pwr parameter: | |
928 | * mode: ON or OFF | |
929 | */ | |
930 | ||
931 | /* FIXME: Assumes AC or USB power is present. Setting AUA bit is not | |
932 | required if power supply is through a battery */ | |
933 | ||
934 | int tps65013_set_low_pwr(unsigned mode) | |
935 | { | |
936 | int status; | |
937 | unsigned vdcdc1, chgconfig; | |
938 | ||
939 | if (!the_tps || the_tps->por) | |
940 | return -ENODEV; | |
941 | ||
5c085d36 | 942 | mutex_lock(&the_tps->lock); |
72cd7995 DB |
943 | |
944 | pr_debug("%s: %s low_pwr, chgconfig 0x%02x vdcdc1 0x%02x\n", | |
945 | DRIVER_NAME, | |
946 | mode ? "enable" : "disable", | |
b5067f8f DB |
947 | i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG), |
948 | i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1)); | |
72cd7995 | 949 | |
b5067f8f DB |
950 | chgconfig = i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG); |
951 | vdcdc1 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1); | |
72cd7995 DB |
952 | |
953 | switch (mode) { | |
954 | case OFF: | |
955 | chgconfig &= ~TPS65013_AUA; /* disable AUA bit */ | |
956 | vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */ | |
957 | break; | |
958 | /* case ON: */ | |
959 | default: | |
960 | chgconfig |= TPS65013_AUA; /* enable AUA bit */ | |
961 | vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */ | |
962 | break; | |
963 | } | |
964 | ||
b5067f8f | 965 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
966 | TPS_CHGCONFIG, chgconfig); |
967 | if (status != 0) { | |
968 | printk(KERN_ERR "%s: Failed to write chconfig register\n", | |
969 | DRIVER_NAME); | |
5c085d36 | 970 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
971 | return status; |
972 | } | |
973 | ||
b5067f8f | 974 | chgconfig = i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG); |
72cd7995 DB |
975 | the_tps->chgconf = chgconfig; |
976 | show_chgconfig(0, "chgconf", chgconfig); | |
977 | ||
b5067f8f | 978 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
979 | TPS_VDCDC1, vdcdc1); |
980 | ||
981 | if (status != 0) | |
982 | printk(KERN_ERR "%s: Failed to write vdcdc1 register\n", | |
983 | DRIVER_NAME); | |
984 | else | |
985 | pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME, | |
b5067f8f | 986 | i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1)); |
72cd7995 | 987 | |
5c085d36 | 988 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
989 | |
990 | return status; | |
991 | } | |
992 | EXPORT_SYMBOL(tps65013_set_low_pwr); | |
993 | ||
994 | /*-------------------------------------------------------------------------*/ | |
995 | ||
996 | static int __init tps_init(void) | |
997 | { | |
998 | u32 tries = 3; | |
999 | int status = -ENODEV; | |
1000 | ||
1001 | printk(KERN_INFO "%s: version %s\n", DRIVER_NAME, DRIVER_VERSION); | |
1002 | ||
1003 | /* some boards have startup glitches */ | |
1004 | while (tries--) { | |
1005 | status = i2c_add_driver(&tps65010_driver); | |
1006 | if (the_tps) | |
1007 | break; | |
1008 | i2c_del_driver(&tps65010_driver); | |
1009 | if (!tries) { | |
1010 | printk(KERN_ERR "%s: no chip?\n", DRIVER_NAME); | |
1011 | return -ENODEV; | |
1012 | } | |
1013 | pr_debug("%s: re-probe ...\n", DRIVER_NAME); | |
1014 | msleep(10); | |
1015 | } | |
1016 | ||
65fc50e5 | 1017 | #ifdef CONFIG_ARM |
72cd7995 DB |
1018 | if (machine_is_omap_osk()) { |
1019 | ||
1020 | // FIXME: More should be placed in the initialization code | |
1021 | // of the submodules (DSP, ethernet, power management, | |
1022 | // board-osk.c). Careful: I2C is initialized "late". | |
1023 | ||
1024 | /* Let LED1 (D9) blink */ | |
1025 | tps65010_set_led(LED1, BLINK); | |
1026 | ||
1027 | /* Disable LED 2 (D2) */ | |
1028 | tps65010_set_led(LED2, OFF); | |
1029 | ||
1030 | /* Set GPIO 1 HIGH to disable VBUS power supply; | |
1031 | * OHCI driver powers it up/down as needed. | |
1032 | */ | |
1033 | tps65010_set_gpio_out_value(GPIO1, HIGH); | |
1034 | ||
1035 | /* Set GPIO 2 low to turn on LED D3 */ | |
1036 | tps65010_set_gpio_out_value(GPIO2, HIGH); | |
1037 | ||
1038 | /* Set GPIO 3 low to take ethernet out of reset */ | |
1039 | tps65010_set_gpio_out_value(GPIO3, LOW); | |
1040 | ||
1041 | /* gpio4 for VDD_DSP */ | |
1042 | ||
1043 | /* Enable LOW_PWR */ | |
1044 | tps65010_set_low_pwr(ON); | |
1045 | ||
1046 | /* Switch VLDO2 to 3.0V for AIC23 */ | |
1047 | tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V | TPS_LDO1_ENABLE); | |
1048 | ||
1049 | } else if (machine_is_omap_h2()) { | |
1050 | /* gpio3 for SD, gpio4 for VDD_DSP */ | |
1051 | ||
1052 | /* Enable LOW_PWR */ | |
1053 | tps65010_set_low_pwr(ON); | |
1054 | } else if (machine_is_omap_h3()) { | |
1055 | /* gpio4 for SD, gpio3 for VDD_DSP */ | |
1056 | #ifdef CONFIG_PM | |
1057 | /* Enable LOW_PWR */ | |
1058 | tps65013_set_low_pwr(ON); | |
1059 | #endif | |
1060 | } | |
1061 | #endif | |
1062 | ||
1063 | return status; | |
1064 | } | |
1065 | /* NOTE: this MUST be initialized before the other parts of the system | |
1066 | * that rely on it ... but after the i2c bus on which this relies. | |
1067 | * That is, much earlier than on PC-type systems, which don't often use | |
1068 | * I2C as a core system bus. | |
1069 | */ | |
1070 | subsys_initcall(tps_init); | |
1071 | ||
1072 | static void __exit tps_exit(void) | |
1073 | { | |
1074 | i2c_del_driver(&tps65010_driver); | |
1075 | } | |
1076 | module_exit(tps_exit); | |
1077 |