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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> | |
72cd7995 DB |
27 | #include <linux/i2c.h> |
28 | #include <linux/delay.h> | |
29 | #include <linux/workqueue.h> | |
72cd7995 DB |
30 | #include <linux/debugfs.h> |
31 | #include <linux/seq_file.h> | |
5c085d36 | 32 | #include <linux/mutex.h> |
79966fd9 | 33 | #include <linux/platform_device.h> |
72cd7995 | 34 | |
6d16bfb5 | 35 | #include <linux/i2c/tps65010.h> |
72cd7995 | 36 | |
79966fd9 DB |
37 | #include <asm/gpio.h> |
38 | ||
39 | ||
72cd7995 DB |
40 | /*-------------------------------------------------------------------------*/ |
41 | ||
42 | #define DRIVER_VERSION "2 May 2005" | |
4801bc25 | 43 | #define DRIVER_NAME (tps65010_driver.driver.name) |
72cd7995 DB |
44 | |
45 | MODULE_DESCRIPTION("TPS6501x Power Management Driver"); | |
46 | MODULE_LICENSE("GPL"); | |
47 | ||
72cd7995 DB |
48 | static struct i2c_driver tps65010_driver; |
49 | ||
50 | /*-------------------------------------------------------------------------*/ | |
51 | ||
52 | /* This driver handles a family of multipurpose chips, which incorporate | |
53 | * voltage regulators, lithium ion/polymer battery charging, GPIOs, LEDs, | |
54 | * and other features often needed in portable devices like cell phones | |
55 | * or digital cameras. | |
56 | * | |
57 | * The tps65011 and tps65013 have different voltage settings compared | |
58 | * to tps65010 and tps65012. The tps65013 has a NO_CHG status/irq. | |
59 | * All except tps65010 have "wait" mode, possibly defaulted so that | |
60 | * battery-insert != device-on. | |
61 | * | |
62 | * We could distinguish between some models by checking VDCDC1.UVLO or | |
63 | * other registers, unless they've been changed already after powerup | |
64 | * as part of board setup by a bootloader. | |
65 | */ | |
66 | enum tps_model { | |
72cd7995 DB |
67 | TPS65010, |
68 | TPS65011, | |
69 | TPS65012, | |
70 | TPS65013, | |
71 | }; | |
72 | ||
73 | struct tps65010 { | |
b5067f8f | 74 | struct i2c_client *client; |
5c085d36 | 75 | struct mutex lock; |
8c1bc04e | 76 | struct delayed_work work; |
72cd7995 DB |
77 | struct dentry *file; |
78 | unsigned charging:1; | |
79 | unsigned por:1; | |
80 | unsigned model:8; | |
81 | u16 vbus; | |
82 | unsigned long flags; | |
83 | #define FLAG_VBUS_CHANGED 0 | |
84 | #define FLAG_IRQ_ENABLE 1 | |
85 | ||
86 | /* copies of last register state */ | |
87 | u8 chgstatus, regstatus, chgconf; | |
88 | u8 nmask1, nmask2; | |
89 | ||
79966fd9 DB |
90 | u8 outmask; |
91 | struct gpio_chip chip; | |
92 | struct platform_device *leds; | |
72cd7995 DB |
93 | }; |
94 | ||
4801bc25 | 95 | #define POWER_POLL_DELAY msecs_to_jiffies(5000) |
72cd7995 DB |
96 | |
97 | /*-------------------------------------------------------------------------*/ | |
98 | ||
99 | #if defined(DEBUG) || defined(CONFIG_DEBUG_FS) | |
100 | ||
101 | static void dbg_chgstat(char *buf, size_t len, u8 chgstatus) | |
102 | { | |
103 | snprintf(buf, len, "%02x%s%s%s%s%s%s%s%s\n", | |
104 | chgstatus, | |
105 | (chgstatus & TPS_CHG_USB) ? " USB" : "", | |
106 | (chgstatus & TPS_CHG_AC) ? " AC" : "", | |
107 | (chgstatus & TPS_CHG_THERM) ? " therm" : "", | |
108 | (chgstatus & TPS_CHG_TERM) ? " done" : | |
109 | ((chgstatus & (TPS_CHG_USB|TPS_CHG_AC)) | |
110 | ? " (charging)" : ""), | |
111 | (chgstatus & TPS_CHG_TAPER_TMO) ? " taper_tmo" : "", | |
112 | (chgstatus & TPS_CHG_CHG_TMO) ? " charge_tmo" : "", | |
113 | (chgstatus & TPS_CHG_PRECHG_TMO) ? " prechg_tmo" : "", | |
114 | (chgstatus & TPS_CHG_TEMP_ERR) ? " temp_err" : ""); | |
115 | } | |
116 | ||
117 | static void dbg_regstat(char *buf, size_t len, u8 regstatus) | |
118 | { | |
119 | snprintf(buf, len, "%02x %s%s%s%s%s%s%s%s\n", | |
120 | regstatus, | |
121 | (regstatus & TPS_REG_ONOFF) ? "off" : "(on)", | |
122 | (regstatus & TPS_REG_COVER) ? " uncover" : "", | |
123 | (regstatus & TPS_REG_UVLO) ? " UVLO" : "", | |
124 | (regstatus & TPS_REG_NO_CHG) ? " NO_CHG" : "", | |
65fc50e5 | 125 | (regstatus & TPS_REG_PG_LD02) ? " ld02_bad" : "", |
72cd7995 DB |
126 | (regstatus & TPS_REG_PG_LD01) ? " ld01_bad" : "", |
127 | (regstatus & TPS_REG_PG_MAIN) ? " main_bad" : "", | |
128 | (regstatus & TPS_REG_PG_CORE) ? " core_bad" : ""); | |
129 | } | |
130 | ||
131 | static void dbg_chgconf(int por, char *buf, size_t len, u8 chgconfig) | |
132 | { | |
65fc50e5 | 133 | const char *hibit; |
72cd7995 DB |
134 | |
135 | if (por) | |
136 | hibit = (chgconfig & TPS_CHARGE_POR) | |
137 | ? "POR=69ms" : "POR=1sec"; | |
138 | else | |
139 | hibit = (chgconfig & TPS65013_AUA) ? "AUA" : ""; | |
140 | ||
141 | snprintf(buf, len, "%02x %s%s%s AC=%d%% USB=%dmA %sCharge\n", | |
142 | chgconfig, hibit, | |
143 | (chgconfig & TPS_CHARGE_RESET) ? " reset" : "", | |
144 | (chgconfig & TPS_CHARGE_FAST) ? " fast" : "", | |
145 | ({int p; switch ((chgconfig >> 3) & 3) { | |
146 | case 3: p = 100; break; | |
147 | case 2: p = 75; break; | |
148 | case 1: p = 50; break; | |
149 | default: p = 25; break; | |
150 | }; p; }), | |
151 | (chgconfig & TPS_VBUS_CHARGING) | |
152 | ? ((chgconfig & TPS_VBUS_500MA) ? 500 : 100) | |
153 | : 0, | |
154 | (chgconfig & TPS_CHARGE_ENABLE) ? "" : "No"); | |
155 | } | |
156 | ||
157 | #endif | |
158 | ||
159 | #ifdef DEBUG | |
160 | ||
161 | static void show_chgstatus(const char *label, u8 chgstatus) | |
162 | { | |
163 | char buf [100]; | |
164 | ||
165 | dbg_chgstat(buf, sizeof buf, chgstatus); | |
166 | pr_debug("%s: %s %s", DRIVER_NAME, label, buf); | |
167 | } | |
168 | ||
169 | static void show_regstatus(const char *label, u8 regstatus) | |
170 | { | |
171 | char buf [100]; | |
172 | ||
173 | dbg_regstat(buf, sizeof buf, regstatus); | |
174 | pr_debug("%s: %s %s", DRIVER_NAME, label, buf); | |
175 | } | |
176 | ||
177 | static void show_chgconfig(int por, const char *label, u8 chgconfig) | |
178 | { | |
179 | char buf [100]; | |
180 | ||
181 | dbg_chgconf(por, buf, sizeof buf, chgconfig); | |
182 | pr_debug("%s: %s %s", DRIVER_NAME, label, buf); | |
183 | } | |
184 | ||
185 | #else | |
186 | ||
187 | static inline void show_chgstatus(const char *label, u8 chgstatus) { } | |
188 | static inline void show_regstatus(const char *label, u8 chgstatus) { } | |
189 | static inline void show_chgconfig(int por, const char *label, u8 chgconfig) { } | |
190 | ||
191 | #endif | |
192 | ||
193 | #ifdef CONFIG_DEBUG_FS | |
194 | ||
195 | static int dbg_show(struct seq_file *s, void *_) | |
196 | { | |
197 | struct tps65010 *tps = s->private; | |
198 | u8 value, v2; | |
199 | unsigned i; | |
200 | char buf[100]; | |
201 | const char *chip; | |
202 | ||
203 | switch (tps->model) { | |
204 | case TPS65010: chip = "tps65010"; break; | |
205 | case TPS65011: chip = "tps65011"; break; | |
206 | case TPS65012: chip = "tps65012"; break; | |
207 | case TPS65013: chip = "tps65013"; break; | |
208 | default: chip = NULL; break; | |
209 | } | |
210 | seq_printf(s, "driver %s\nversion %s\nchip %s\n\n", | |
211 | DRIVER_NAME, DRIVER_VERSION, chip); | |
212 | ||
5c085d36 | 213 | mutex_lock(&tps->lock); |
72cd7995 DB |
214 | |
215 | /* FIXME how can we tell whether a battery is present? | |
216 | * likely involves a charge gauging chip (like BQ26501). | |
217 | */ | |
218 | ||
219 | seq_printf(s, "%scharging\n\n", tps->charging ? "" : "(not) "); | |
220 | ||
221 | ||
222 | /* registers for monitoring battery charging and status; note | |
223 | * that reading chgstat and regstat may ack IRQs... | |
224 | */ | |
b5067f8f | 225 | value = i2c_smbus_read_byte_data(tps->client, TPS_CHGCONFIG); |
72cd7995 DB |
226 | dbg_chgconf(tps->por, buf, sizeof buf, value); |
227 | seq_printf(s, "chgconfig %s", buf); | |
228 | ||
b5067f8f | 229 | value = i2c_smbus_read_byte_data(tps->client, TPS_CHGSTATUS); |
72cd7995 DB |
230 | dbg_chgstat(buf, sizeof buf, value); |
231 | seq_printf(s, "chgstat %s", buf); | |
b5067f8f | 232 | value = i2c_smbus_read_byte_data(tps->client, TPS_MASK1); |
72cd7995 DB |
233 | dbg_chgstat(buf, sizeof buf, value); |
234 | seq_printf(s, "mask1 %s", buf); | |
235 | /* ignore ackint1 */ | |
236 | ||
b5067f8f | 237 | value = i2c_smbus_read_byte_data(tps->client, TPS_REGSTATUS); |
72cd7995 DB |
238 | dbg_regstat(buf, sizeof buf, value); |
239 | seq_printf(s, "regstat %s", buf); | |
b5067f8f | 240 | value = i2c_smbus_read_byte_data(tps->client, TPS_MASK2); |
72cd7995 DB |
241 | dbg_regstat(buf, sizeof buf, value); |
242 | seq_printf(s, "mask2 %s\n", buf); | |
243 | /* ignore ackint2 */ | |
244 | ||
245 | (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY); | |
246 | ||
247 | ||
248 | /* VMAIN voltage, enable lowpower, etc */ | |
b5067f8f | 249 | value = i2c_smbus_read_byte_data(tps->client, TPS_VDCDC1); |
72cd7995 DB |
250 | seq_printf(s, "vdcdc1 %02x\n", value); |
251 | ||
252 | /* VCORE voltage, vibrator on/off */ | |
b5067f8f | 253 | value = i2c_smbus_read_byte_data(tps->client, TPS_VDCDC2); |
72cd7995 DB |
254 | seq_printf(s, "vdcdc2 %02x\n", value); |
255 | ||
256 | /* both LD0s, and their lowpower behavior */ | |
b5067f8f | 257 | value = i2c_smbus_read_byte_data(tps->client, TPS_VREGS1); |
72cd7995 DB |
258 | seq_printf(s, "vregs1 %02x\n\n", value); |
259 | ||
260 | ||
261 | /* LEDs and GPIOs */ | |
b5067f8f DB |
262 | value = i2c_smbus_read_byte_data(tps->client, TPS_LED1_ON); |
263 | v2 = i2c_smbus_read_byte_data(tps->client, TPS_LED1_PER); | |
72cd7995 DB |
264 | seq_printf(s, "led1 %s, on=%02x, per=%02x, %d/%d msec\n", |
265 | (value & 0x80) | |
266 | ? ((v2 & 0x80) ? "on" : "off") | |
267 | : ((v2 & 0x80) ? "blink" : "(nPG)"), | |
268 | value, v2, | |
269 | (value & 0x7f) * 10, (v2 & 0x7f) * 100); | |
270 | ||
b5067f8f DB |
271 | value = i2c_smbus_read_byte_data(tps->client, TPS_LED2_ON); |
272 | v2 = i2c_smbus_read_byte_data(tps->client, TPS_LED2_PER); | |
72cd7995 DB |
273 | seq_printf(s, "led2 %s, on=%02x, per=%02x, %d/%d msec\n", |
274 | (value & 0x80) | |
275 | ? ((v2 & 0x80) ? "on" : "off") | |
276 | : ((v2 & 0x80) ? "blink" : "off"), | |
277 | value, v2, | |
278 | (value & 0x7f) * 10, (v2 & 0x7f) * 100); | |
279 | ||
b5067f8f DB |
280 | value = i2c_smbus_read_byte_data(tps->client, TPS_DEFGPIO); |
281 | v2 = i2c_smbus_read_byte_data(tps->client, TPS_MASK3); | |
72cd7995 DB |
282 | seq_printf(s, "defgpio %02x mask3 %02x\n", value, v2); |
283 | ||
284 | for (i = 0; i < 4; i++) { | |
65fc50e5 | 285 | if (value & (1 << (4 + i))) |
72cd7995 DB |
286 | seq_printf(s, " gpio%d-out %s\n", i + 1, |
287 | (value & (1 << i)) ? "low" : "hi "); | |
288 | else | |
289 | seq_printf(s, " gpio%d-in %s %s %s\n", i + 1, | |
290 | (value & (1 << i)) ? "hi " : "low", | |
291 | (v2 & (1 << i)) ? "no-irq" : "irq", | |
292 | (v2 & (1 << (4 + i))) ? "rising" : "falling"); | |
293 | } | |
294 | ||
5c085d36 | 295 | mutex_unlock(&tps->lock); |
72cd7995 DB |
296 | return 0; |
297 | } | |
298 | ||
299 | static int dbg_tps_open(struct inode *inode, struct file *file) | |
300 | { | |
8e18e294 | 301 | return single_open(file, dbg_show, inode->i_private); |
72cd7995 DB |
302 | } |
303 | ||
2b8693c0 | 304 | static const struct file_operations debug_fops = { |
72cd7995 DB |
305 | .open = dbg_tps_open, |
306 | .read = seq_read, | |
307 | .llseek = seq_lseek, | |
308 | .release = single_release, | |
309 | }; | |
310 | ||
311 | #define DEBUG_FOPS &debug_fops | |
312 | ||
313 | #else | |
314 | #define DEBUG_FOPS NULL | |
315 | #endif | |
316 | ||
317 | /*-------------------------------------------------------------------------*/ | |
318 | ||
319 | /* handle IRQS in a task context, so we can use I2C calls */ | |
320 | static void tps65010_interrupt(struct tps65010 *tps) | |
321 | { | |
322 | u8 tmp = 0, mask, poll; | |
323 | ||
8c1bc04e | 324 | /* IRQs won't trigger for certain events, but we can get |
72cd7995 DB |
325 | * others by polling (normally, with external power applied). |
326 | */ | |
327 | poll = 0; | |
328 | ||
329 | /* regstatus irqs */ | |
330 | if (tps->nmask2) { | |
b5067f8f | 331 | tmp = i2c_smbus_read_byte_data(tps->client, TPS_REGSTATUS); |
72cd7995 DB |
332 | mask = tmp ^ tps->regstatus; |
333 | tps->regstatus = tmp; | |
334 | mask &= tps->nmask2; | |
335 | } else | |
336 | mask = 0; | |
337 | if (mask) { | |
338 | tps->regstatus = tmp; | |
339 | /* may need to shut something down ... */ | |
340 | ||
341 | /* "off" usually means deep sleep */ | |
342 | if (tmp & TPS_REG_ONOFF) { | |
343 | pr_info("%s: power off button\n", DRIVER_NAME); | |
344 | #if 0 | |
345 | /* REVISIT: this might need its own workqueue | |
346 | * plus tweaks including deadlock avoidance ... | |
ab3bfca7 | 347 | * also needs to get error handling and probably |
b0cb1a19 | 348 | * an #ifdef CONFIG_HIBERNATION |
72cd7995 | 349 | */ |
a3d25c27 | 350 | hibernate(); |
72cd7995 DB |
351 | #endif |
352 | poll = 1; | |
353 | } | |
354 | } | |
355 | ||
356 | /* chgstatus irqs */ | |
357 | if (tps->nmask1) { | |
b5067f8f | 358 | tmp = i2c_smbus_read_byte_data(tps->client, TPS_CHGSTATUS); |
72cd7995 DB |
359 | mask = tmp ^ tps->chgstatus; |
360 | tps->chgstatus = tmp; | |
361 | mask &= tps->nmask1; | |
362 | } else | |
363 | mask = 0; | |
364 | if (mask) { | |
365 | unsigned charging = 0; | |
366 | ||
367 | show_chgstatus("chg/irq", tmp); | |
368 | if (tmp & (TPS_CHG_USB|TPS_CHG_AC)) | |
369 | show_chgconfig(tps->por, "conf", tps->chgconf); | |
370 | ||
371 | /* Unless it was turned off or disabled, we charge any | |
372 | * battery whenever there's power available for it | |
373 | * and the charger hasn't been disabled. | |
374 | */ | |
375 | if (!(tps->chgstatus & ~(TPS_CHG_USB|TPS_CHG_AC)) | |
376 | && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)) | |
377 | && (tps->chgconf & TPS_CHARGE_ENABLE) | |
378 | ) { | |
379 | if (tps->chgstatus & TPS_CHG_USB) { | |
380 | /* VBUS options are readonly until reconnect */ | |
381 | if (mask & TPS_CHG_USB) | |
382 | set_bit(FLAG_VBUS_CHANGED, &tps->flags); | |
383 | charging = 1; | |
384 | } else if (tps->chgstatus & TPS_CHG_AC) | |
385 | charging = 1; | |
386 | } | |
387 | if (charging != tps->charging) { | |
388 | tps->charging = charging; | |
389 | pr_info("%s: battery %scharging\n", | |
390 | DRIVER_NAME, charging ? "" : | |
391 | ((tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)) | |
392 | ? "NOT " : "dis")); | |
393 | } | |
394 | } | |
395 | ||
396 | /* always poll to detect (a) power removal, without tps65013 | |
397 | * NO_CHG IRQ; or (b) restart of charging after stop. | |
398 | */ | |
399 | if ((tps->model != TPS65013 || !tps->charging) | |
400 | && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))) | |
401 | poll = 1; | |
402 | if (poll) | |
403 | (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY); | |
404 | ||
405 | /* also potentially gpio-in rise or fall */ | |
406 | } | |
407 | ||
408 | /* handle IRQs and polling using keventd for now */ | |
8c1bc04e | 409 | static void tps65010_work(struct work_struct *work) |
72cd7995 | 410 | { |
8c1bc04e | 411 | struct tps65010 *tps; |
72cd7995 | 412 | |
8c1bc04e | 413 | tps = container_of(work, struct tps65010, work.work); |
5c085d36 | 414 | mutex_lock(&tps->lock); |
72cd7995 DB |
415 | |
416 | tps65010_interrupt(tps); | |
417 | ||
418 | if (test_and_clear_bit(FLAG_VBUS_CHANGED, &tps->flags)) { | |
419 | int status; | |
420 | u8 chgconfig, tmp; | |
421 | ||
b5067f8f | 422 | chgconfig = i2c_smbus_read_byte_data(tps->client, |
72cd7995 DB |
423 | TPS_CHGCONFIG); |
424 | chgconfig &= ~(TPS_VBUS_500MA | TPS_VBUS_CHARGING); | |
425 | if (tps->vbus == 500) | |
426 | chgconfig |= TPS_VBUS_500MA | TPS_VBUS_CHARGING; | |
427 | else if (tps->vbus >= 100) | |
428 | chgconfig |= TPS_VBUS_CHARGING; | |
429 | ||
b5067f8f | 430 | status = i2c_smbus_write_byte_data(tps->client, |
72cd7995 DB |
431 | TPS_CHGCONFIG, chgconfig); |
432 | ||
433 | /* vbus update fails unless VBUS is connected! */ | |
b5067f8f | 434 | tmp = i2c_smbus_read_byte_data(tps->client, TPS_CHGCONFIG); |
72cd7995 DB |
435 | tps->chgconf = tmp; |
436 | show_chgconfig(tps->por, "update vbus", tmp); | |
437 | } | |
438 | ||
439 | if (test_and_clear_bit(FLAG_IRQ_ENABLE, &tps->flags)) | |
8056c6cb | 440 | enable_irq(tps->client->irq); |
72cd7995 | 441 | |
5c085d36 | 442 | mutex_unlock(&tps->lock); |
72cd7995 DB |
443 | } |
444 | ||
7d12e780 | 445 | static irqreturn_t tps65010_irq(int irq, void *_tps) |
72cd7995 DB |
446 | { |
447 | struct tps65010 *tps = _tps; | |
448 | ||
449 | disable_irq_nosync(irq); | |
450 | set_bit(FLAG_IRQ_ENABLE, &tps->flags); | |
8c1bc04e | 451 | (void) schedule_work(&tps->work.work); |
72cd7995 DB |
452 | return IRQ_HANDLED; |
453 | } | |
454 | ||
79966fd9 DB |
455 | /*-------------------------------------------------------------------------*/ |
456 | ||
457 | /* offsets 0..3 == GPIO1..GPIO4 | |
458 | * offsets 4..5 == LED1/nPG, LED2 (we set one of the non-BLINK modes) | |
b84ee0b0 | 459 | * offset 6 == vibrator motor driver |
79966fd9 DB |
460 | */ |
461 | static void | |
462 | tps65010_gpio_set(struct gpio_chip *chip, unsigned offset, int value) | |
463 | { | |
464 | if (offset < 4) | |
465 | tps65010_set_gpio_out_value(offset + 1, value); | |
b84ee0b0 | 466 | else if (offset < 6) |
79966fd9 | 467 | tps65010_set_led(offset - 3, value ? ON : OFF); |
b84ee0b0 MV |
468 | else |
469 | tps65010_set_vib(value); | |
79966fd9 DB |
470 | } |
471 | ||
472 | static int | |
473 | tps65010_output(struct gpio_chip *chip, unsigned offset, int value) | |
474 | { | |
475 | /* GPIOs may be input-only */ | |
476 | if (offset < 4) { | |
477 | struct tps65010 *tps; | |
478 | ||
479 | tps = container_of(chip, struct tps65010, chip); | |
480 | if (!(tps->outmask & (1 << offset))) | |
481 | return -EINVAL; | |
482 | tps65010_set_gpio_out_value(offset + 1, value); | |
b84ee0b0 | 483 | } else if (offset < 6) |
79966fd9 | 484 | tps65010_set_led(offset - 3, value ? ON : OFF); |
b84ee0b0 MV |
485 | else |
486 | tps65010_set_vib(value); | |
79966fd9 DB |
487 | |
488 | return 0; | |
489 | } | |
490 | ||
491 | static int tps65010_gpio_get(struct gpio_chip *chip, unsigned offset) | |
492 | { | |
493 | int value; | |
494 | struct tps65010 *tps; | |
495 | ||
496 | tps = container_of(chip, struct tps65010, chip); | |
497 | ||
498 | if (offset < 4) { | |
499 | value = i2c_smbus_read_byte_data(tps->client, TPS_DEFGPIO); | |
500 | if (value < 0) | |
501 | return 0; | |
502 | if (value & (1 << (offset + 4))) /* output */ | |
503 | return !(value & (1 << offset)); | |
504 | else /* input */ | |
505 | return (value & (1 << offset)); | |
506 | } | |
507 | ||
508 | /* REVISIT we *could* report LED1/nPG and LED2 state ... */ | |
509 | return 0; | |
510 | } | |
511 | ||
512 | ||
72cd7995 DB |
513 | /*-------------------------------------------------------------------------*/ |
514 | ||
515 | static struct tps65010 *the_tps; | |
516 | ||
8056c6cb | 517 | static int __exit tps65010_remove(struct i2c_client *client) |
72cd7995 | 518 | { |
8056c6cb | 519 | struct tps65010 *tps = i2c_get_clientdata(client); |
79966fd9 | 520 | struct tps65010_board *board = client->dev.platform_data; |
72cd7995 | 521 | |
79966fd9 DB |
522 | if (board && board->teardown) { |
523 | int status = board->teardown(client, board->context); | |
524 | if (status < 0) | |
525 | dev_dbg(&client->dev, "board %s %s err %d\n", | |
526 | "teardown", client->name, status); | |
527 | } | |
8056c6cb DB |
528 | if (client->irq > 0) |
529 | free_irq(client->irq, tps); | |
8c1bc04e DB |
530 | cancel_delayed_work(&tps->work); |
531 | flush_scheduled_work(); | |
72cd7995 | 532 | debugfs_remove(tps->file); |
8056c6cb | 533 | kfree(tps); |
6d072d78 | 534 | i2c_set_clientdata(client, NULL); |
65fc50e5 | 535 | the_tps = NULL; |
72cd7995 DB |
536 | return 0; |
537 | } | |
538 | ||
d2653e92 JD |
539 | static int tps65010_probe(struct i2c_client *client, |
540 | const struct i2c_device_id *id) | |
72cd7995 DB |
541 | { |
542 | struct tps65010 *tps; | |
543 | int status; | |
79966fd9 | 544 | struct tps65010_board *board = client->dev.platform_data; |
72cd7995 DB |
545 | |
546 | if (the_tps) { | |
8056c6cb DB |
547 | dev_dbg(&client->dev, "only one tps6501x chip allowed\n"); |
548 | return -ENODEV; | |
72cd7995 DB |
549 | } |
550 | ||
8056c6cb DB |
551 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
552 | return -EINVAL; | |
553 | ||
5263ebb5 | 554 | tps = kzalloc(sizeof *tps, GFP_KERNEL); |
72cd7995 | 555 | if (!tps) |
8056c6cb | 556 | return -ENOMEM; |
72cd7995 | 557 | |
5c085d36 | 558 | mutex_init(&tps->lock); |
8c1bc04e | 559 | INIT_DELAYED_WORK(&tps->work, tps65010_work); |
8056c6cb | 560 | tps->client = client; |
3760f736 | 561 | tps->model = id->driver_data; |
72cd7995 | 562 | |
8056c6cb DB |
563 | /* the IRQ is active low, but many gpio lines can't support that |
564 | * so this driver uses falling-edge triggers instead. | |
565 | */ | |
566 | if (client->irq > 0) { | |
567 | status = request_irq(client->irq, tps65010_irq, | |
568 | IRQF_SAMPLE_RANDOM | IRQF_TRIGGER_FALLING, | |
569 | DRIVER_NAME, tps); | |
72cd7995 | 570 | if (status < 0) { |
b5067f8f | 571 | dev_dbg(&client->dev, "can't get IRQ %d, err %d\n", |
8056c6cb | 572 | client->irq, status); |
72cd7995 DB |
573 | goto fail1; |
574 | } | |
72cd7995 DB |
575 | /* annoying race here, ideally we'd have an option |
576 | * to claim the irq now and enable it later. | |
8056c6cb | 577 | * FIXME genirq IRQF_NOAUTOEN now solves that ... |
72cd7995 | 578 | */ |
8056c6cb | 579 | disable_irq(client->irq); |
72cd7995 | 580 | set_bit(FLAG_IRQ_ENABLE, &tps->flags); |
72cd7995 | 581 | } else |
8056c6cb | 582 | dev_warn(&client->dev, "IRQ not configured!\n"); |
72cd7995 DB |
583 | |
584 | ||
585 | switch (tps->model) { | |
586 | case TPS65010: | |
587 | case TPS65012: | |
588 | tps->por = 1; | |
589 | break; | |
72cd7995 DB |
590 | /* else CHGCONFIG.POR is replaced by AUA, enabling a WAIT mode */ |
591 | } | |
b5067f8f | 592 | tps->chgconf = i2c_smbus_read_byte_data(client, TPS_CHGCONFIG); |
72cd7995 DB |
593 | show_chgconfig(tps->por, "conf/init", tps->chgconf); |
594 | ||
595 | show_chgstatus("chg/init", | |
b5067f8f | 596 | i2c_smbus_read_byte_data(client, TPS_CHGSTATUS)); |
72cd7995 | 597 | show_regstatus("reg/init", |
b5067f8f | 598 | i2c_smbus_read_byte_data(client, TPS_REGSTATUS)); |
72cd7995 DB |
599 | |
600 | pr_debug("%s: vdcdc1 0x%02x, vdcdc2 %02x, vregs1 %02x\n", DRIVER_NAME, | |
b5067f8f DB |
601 | i2c_smbus_read_byte_data(client, TPS_VDCDC1), |
602 | i2c_smbus_read_byte_data(client, TPS_VDCDC2), | |
603 | i2c_smbus_read_byte_data(client, TPS_VREGS1)); | |
72cd7995 | 604 | pr_debug("%s: defgpio 0x%02x, mask3 0x%02x\n", DRIVER_NAME, |
b5067f8f DB |
605 | i2c_smbus_read_byte_data(client, TPS_DEFGPIO), |
606 | i2c_smbus_read_byte_data(client, TPS_MASK3)); | |
72cd7995 | 607 | |
6d072d78 | 608 | i2c_set_clientdata(client, tps); |
72cd7995 DB |
609 | the_tps = tps; |
610 | ||
611 | #if defined(CONFIG_USB_GADGET) && !defined(CONFIG_USB_OTG) | |
612 | /* USB hosts can't draw VBUS. OTG devices could, later | |
613 | * when OTG infrastructure enables it. USB peripherals | |
614 | * could be relying on VBUS while booting, though. | |
615 | */ | |
616 | tps->vbus = 100; | |
617 | #endif | |
618 | ||
619 | /* unmask the "interesting" irqs, then poll once to | |
620 | * kickstart monitoring, initialize shadowed status | |
621 | * registers, and maybe disable VBUS draw. | |
622 | */ | |
623 | tps->nmask1 = ~0; | |
b5067f8f | 624 | (void) i2c_smbus_write_byte_data(client, TPS_MASK1, ~tps->nmask1); |
72cd7995 DB |
625 | |
626 | tps->nmask2 = TPS_REG_ONOFF; | |
627 | if (tps->model == TPS65013) | |
628 | tps->nmask2 |= TPS_REG_NO_CHG; | |
b5067f8f | 629 | (void) i2c_smbus_write_byte_data(client, TPS_MASK2, ~tps->nmask2); |
72cd7995 | 630 | |
b5067f8f DB |
631 | (void) i2c_smbus_write_byte_data(client, TPS_MASK3, 0x0f |
632 | | i2c_smbus_read_byte_data(client, TPS_MASK3)); | |
72cd7995 | 633 | |
8c1bc04e | 634 | tps65010_work(&tps->work.work); |
72cd7995 DB |
635 | |
636 | tps->file = debugfs_create_file(DRIVER_NAME, S_IRUGO, NULL, | |
637 | tps, DEBUG_FOPS); | |
79966fd9 DB |
638 | |
639 | /* optionally register GPIOs */ | |
640 | if (board && board->base > 0) { | |
641 | tps->outmask = board->outmask; | |
642 | ||
643 | tps->chip.label = client->name; | |
d8f388d8 DB |
644 | tps->chip.dev = &client->dev; |
645 | tps->chip.owner = THIS_MODULE; | |
79966fd9 DB |
646 | |
647 | tps->chip.set = tps65010_gpio_set; | |
648 | tps->chip.direction_output = tps65010_output; | |
649 | ||
650 | /* NOTE: only partial support for inputs; nyet IRQs */ | |
651 | tps->chip.get = tps65010_gpio_get; | |
652 | ||
653 | tps->chip.base = board->base; | |
b84ee0b0 | 654 | tps->chip.ngpio = 7; |
79966fd9 DB |
655 | tps->chip.can_sleep = 1; |
656 | ||
657 | status = gpiochip_add(&tps->chip); | |
658 | if (status < 0) | |
659 | dev_err(&client->dev, "can't add gpiochip, err %d\n", | |
660 | status); | |
661 | else if (board->setup) { | |
662 | status = board->setup(client, board->context); | |
663 | if (status < 0) { | |
664 | dev_dbg(&client->dev, | |
665 | "board %s %s err %d\n", | |
666 | "setup", client->name, status); | |
667 | status = 0; | |
668 | } | |
669 | } | |
670 | } | |
671 | ||
72cd7995 | 672 | return 0; |
65fc50e5 | 673 | fail1: |
674 | kfree(tps); | |
8056c6cb | 675 | return status; |
72cd7995 DB |
676 | } |
677 | ||
3760f736 JD |
678 | static const struct i2c_device_id tps65010_id[] = { |
679 | { "tps65010", TPS65010 }, | |
680 | { "tps65011", TPS65011 }, | |
681 | { "tps65012", TPS65012 }, | |
682 | { "tps65013", TPS65013 }, | |
b84ee0b0 | 683 | { "tps65014", TPS65011 }, /* tps65011 charging at 6.5V max */ |
3760f736 JD |
684 | { } |
685 | }; | |
686 | MODULE_DEVICE_TABLE(i2c, tps65010_id); | |
687 | ||
72cd7995 | 688 | static struct i2c_driver tps65010_driver = { |
a9718b0c | 689 | .driver = { |
a9718b0c LR |
690 | .name = "tps65010", |
691 | }, | |
8056c6cb DB |
692 | .probe = tps65010_probe, |
693 | .remove = __exit_p(tps65010_remove), | |
3760f736 | 694 | .id_table = tps65010_id, |
72cd7995 DB |
695 | }; |
696 | ||
697 | /*-------------------------------------------------------------------------*/ | |
698 | ||
699 | /* Draw from VBUS: | |
700 | * 0 mA -- DON'T DRAW (might supply power instead) | |
701 | * 100 mA -- usb unit load (slowest charge rate) | |
702 | * 500 mA -- usb high power (fast battery charge) | |
703 | */ | |
704 | int tps65010_set_vbus_draw(unsigned mA) | |
705 | { | |
706 | unsigned long flags; | |
707 | ||
708 | if (!the_tps) | |
709 | return -ENODEV; | |
710 | ||
711 | /* assumes non-SMP */ | |
712 | local_irq_save(flags); | |
713 | if (mA >= 500) | |
714 | mA = 500; | |
715 | else if (mA >= 100) | |
716 | mA = 100; | |
717 | else | |
718 | mA = 0; | |
719 | the_tps->vbus = mA; | |
720 | if ((the_tps->chgstatus & TPS_CHG_USB) | |
721 | && test_and_set_bit( | |
722 | FLAG_VBUS_CHANGED, &the_tps->flags)) { | |
723 | /* gadget drivers call this in_irq() */ | |
8c1bc04e | 724 | (void) schedule_work(&the_tps->work.work); |
72cd7995 DB |
725 | } |
726 | local_irq_restore(flags); | |
727 | ||
728 | return 0; | |
729 | } | |
730 | EXPORT_SYMBOL(tps65010_set_vbus_draw); | |
731 | ||
732 | /*-------------------------------------------------------------------------*/ | |
733 | /* tps65010_set_gpio_out_value parameter: | |
734 | * gpio: GPIO1, GPIO2, GPIO3 or GPIO4 | |
735 | * value: LOW or HIGH | |
736 | */ | |
737 | int tps65010_set_gpio_out_value(unsigned gpio, unsigned value) | |
738 | { | |
739 | int status; | |
740 | unsigned defgpio; | |
741 | ||
742 | if (!the_tps) | |
743 | return -ENODEV; | |
744 | if ((gpio < GPIO1) || (gpio > GPIO4)) | |
745 | return -EINVAL; | |
746 | ||
5c085d36 | 747 | mutex_lock(&the_tps->lock); |
72cd7995 | 748 | |
b5067f8f | 749 | defgpio = i2c_smbus_read_byte_data(the_tps->client, TPS_DEFGPIO); |
72cd7995 DB |
750 | |
751 | /* Configure GPIO for output */ | |
752 | defgpio |= 1 << (gpio + 3); | |
753 | ||
754 | /* Writing 1 forces a logic 0 on that GPIO and vice versa */ | |
755 | switch (value) { | |
756 | case LOW: | |
757 | defgpio |= 1 << (gpio - 1); /* set GPIO low by writing 1 */ | |
758 | break; | |
759 | /* case HIGH: */ | |
760 | default: | |
761 | defgpio &= ~(1 << (gpio - 1)); /* set GPIO high by writing 0 */ | |
762 | break; | |
763 | } | |
764 | ||
b5067f8f | 765 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
766 | TPS_DEFGPIO, defgpio); |
767 | ||
768 | pr_debug("%s: gpio%dout = %s, defgpio 0x%02x\n", DRIVER_NAME, | |
769 | gpio, value ? "high" : "low", | |
b5067f8f | 770 | i2c_smbus_read_byte_data(the_tps->client, TPS_DEFGPIO)); |
72cd7995 | 771 | |
5c085d36 | 772 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
773 | return status; |
774 | } | |
775 | EXPORT_SYMBOL(tps65010_set_gpio_out_value); | |
776 | ||
777 | /*-------------------------------------------------------------------------*/ | |
778 | /* tps65010_set_led parameter: | |
779 | * led: LED1 or LED2 | |
780 | * mode: ON, OFF or BLINK | |
781 | */ | |
782 | int tps65010_set_led(unsigned led, unsigned mode) | |
783 | { | |
784 | int status; | |
785 | unsigned led_on, led_per, offs; | |
786 | ||
787 | if (!the_tps) | |
788 | return -ENODEV; | |
789 | ||
65fc50e5 | 790 | if (led == LED1) |
72cd7995 DB |
791 | offs = 0; |
792 | else { | |
793 | offs = 2; | |
794 | led = LED2; | |
795 | } | |
796 | ||
5c085d36 | 797 | mutex_lock(&the_tps->lock); |
72cd7995 | 798 | |
65fc50e5 | 799 | pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led, |
b5067f8f | 800 | i2c_smbus_read_byte_data(the_tps->client, |
65fc50e5 | 801 | TPS_LED1_ON + offs)); |
72cd7995 | 802 | |
65fc50e5 | 803 | pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led, |
b5067f8f | 804 | i2c_smbus_read_byte_data(the_tps->client, |
65fc50e5 | 805 | TPS_LED1_PER + offs)); |
72cd7995 DB |
806 | |
807 | switch (mode) { | |
808 | case OFF: | |
809 | led_on = 1 << 7; | |
810 | led_per = 0 << 7; | |
811 | break; | |
812 | case ON: | |
813 | led_on = 1 << 7; | |
814 | led_per = 1 << 7; | |
815 | break; | |
816 | case BLINK: | |
817 | led_on = 0x30 | (0 << 7); | |
818 | led_per = 0x08 | (1 << 7); | |
819 | break; | |
820 | default: | |
65fc50e5 | 821 | printk(KERN_ERR "%s: Wrong mode parameter for set_led()\n", |
72cd7995 | 822 | DRIVER_NAME); |
5c085d36 | 823 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
824 | return -EINVAL; |
825 | } | |
826 | ||
b5067f8f | 827 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
828 | TPS_LED1_ON + offs, led_on); |
829 | ||
830 | if (status != 0) { | |
831 | printk(KERN_ERR "%s: Failed to write led%i_on register\n", | |
832 | DRIVER_NAME, led); | |
5c085d36 | 833 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
834 | return status; |
835 | } | |
836 | ||
65fc50e5 | 837 | pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led, |
b5067f8f | 838 | i2c_smbus_read_byte_data(the_tps->client, TPS_LED1_ON + offs)); |
72cd7995 | 839 | |
b5067f8f | 840 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
841 | TPS_LED1_PER + offs, led_per); |
842 | ||
843 | if (status != 0) { | |
844 | printk(KERN_ERR "%s: Failed to write led%i_per register\n", | |
845 | DRIVER_NAME, led); | |
5c085d36 | 846 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
847 | return status; |
848 | } | |
849 | ||
65fc50e5 | 850 | pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led, |
b5067f8f | 851 | i2c_smbus_read_byte_data(the_tps->client, |
65fc50e5 | 852 | TPS_LED1_PER + offs)); |
72cd7995 | 853 | |
5c085d36 | 854 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
855 | |
856 | return status; | |
857 | } | |
858 | EXPORT_SYMBOL(tps65010_set_led); | |
859 | ||
860 | /*-------------------------------------------------------------------------*/ | |
861 | /* tps65010_set_vib parameter: | |
862 | * value: ON or OFF | |
863 | */ | |
864 | int tps65010_set_vib(unsigned value) | |
865 | { | |
866 | int status; | |
867 | unsigned vdcdc2; | |
868 | ||
869 | if (!the_tps) | |
870 | return -ENODEV; | |
871 | ||
5c085d36 | 872 | mutex_lock(&the_tps->lock); |
72cd7995 | 873 | |
b5067f8f | 874 | vdcdc2 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC2); |
72cd7995 DB |
875 | vdcdc2 &= ~(1 << 1); |
876 | if (value) | |
877 | vdcdc2 |= (1 << 1); | |
b5067f8f | 878 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
879 | TPS_VDCDC2, vdcdc2); |
880 | ||
881 | pr_debug("%s: vibrator %s\n", DRIVER_NAME, value ? "on" : "off"); | |
882 | ||
5c085d36 | 883 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
884 | return status; |
885 | } | |
886 | EXPORT_SYMBOL(tps65010_set_vib); | |
887 | ||
888 | /*-------------------------------------------------------------------------*/ | |
889 | /* tps65010_set_low_pwr parameter: | |
890 | * mode: ON or OFF | |
891 | */ | |
892 | int tps65010_set_low_pwr(unsigned mode) | |
893 | { | |
894 | int status; | |
895 | unsigned vdcdc1; | |
896 | ||
897 | if (!the_tps) | |
898 | return -ENODEV; | |
899 | ||
5c085d36 | 900 | mutex_lock(&the_tps->lock); |
72cd7995 DB |
901 | |
902 | pr_debug("%s: %s low_pwr, vdcdc1 0x%02x\n", DRIVER_NAME, | |
903 | mode ? "enable" : "disable", | |
b5067f8f | 904 | i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1)); |
72cd7995 | 905 | |
b5067f8f | 906 | vdcdc1 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1); |
72cd7995 DB |
907 | |
908 | switch (mode) { | |
909 | case OFF: | |
910 | vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */ | |
911 | break; | |
912 | /* case ON: */ | |
913 | default: | |
914 | vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */ | |
915 | break; | |
916 | } | |
917 | ||
b5067f8f | 918 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
919 | TPS_VDCDC1, vdcdc1); |
920 | ||
921 | if (status != 0) | |
922 | printk(KERN_ERR "%s: Failed to write vdcdc1 register\n", | |
65fc50e5 | 923 | DRIVER_NAME); |
72cd7995 DB |
924 | else |
925 | pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME, | |
b5067f8f | 926 | i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1)); |
72cd7995 | 927 | |
5c085d36 | 928 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
929 | |
930 | return status; | |
931 | } | |
932 | EXPORT_SYMBOL(tps65010_set_low_pwr); | |
933 | ||
934 | /*-------------------------------------------------------------------------*/ | |
935 | /* tps65010_config_vregs1 parameter: | |
936 | * value to be written to VREGS1 register | |
937 | * Note: The complete register is written, set all bits you need | |
938 | */ | |
939 | int tps65010_config_vregs1(unsigned value) | |
940 | { | |
941 | int status; | |
942 | ||
943 | if (!the_tps) | |
944 | return -ENODEV; | |
945 | ||
5c085d36 | 946 | mutex_lock(&the_tps->lock); |
72cd7995 DB |
947 | |
948 | pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME, | |
b5067f8f | 949 | i2c_smbus_read_byte_data(the_tps->client, TPS_VREGS1)); |
72cd7995 | 950 | |
b5067f8f | 951 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
952 | TPS_VREGS1, value); |
953 | ||
954 | if (status != 0) | |
955 | printk(KERN_ERR "%s: Failed to write vregs1 register\n", | |
65fc50e5 | 956 | DRIVER_NAME); |
72cd7995 DB |
957 | else |
958 | pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME, | |
b5067f8f | 959 | i2c_smbus_read_byte_data(the_tps->client, TPS_VREGS1)); |
72cd7995 | 960 | |
5c085d36 | 961 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
962 | |
963 | return status; | |
964 | } | |
965 | EXPORT_SYMBOL(tps65010_config_vregs1); | |
966 | ||
967 | /*-------------------------------------------------------------------------*/ | |
968 | /* tps65013_set_low_pwr parameter: | |
969 | * mode: ON or OFF | |
970 | */ | |
971 | ||
972 | /* FIXME: Assumes AC or USB power is present. Setting AUA bit is not | |
973 | required if power supply is through a battery */ | |
974 | ||
975 | int tps65013_set_low_pwr(unsigned mode) | |
976 | { | |
977 | int status; | |
978 | unsigned vdcdc1, chgconfig; | |
979 | ||
980 | if (!the_tps || the_tps->por) | |
981 | return -ENODEV; | |
982 | ||
5c085d36 | 983 | mutex_lock(&the_tps->lock); |
72cd7995 DB |
984 | |
985 | pr_debug("%s: %s low_pwr, chgconfig 0x%02x vdcdc1 0x%02x\n", | |
986 | DRIVER_NAME, | |
987 | mode ? "enable" : "disable", | |
b5067f8f DB |
988 | i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG), |
989 | i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1)); | |
72cd7995 | 990 | |
b5067f8f DB |
991 | chgconfig = i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG); |
992 | vdcdc1 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1); | |
72cd7995 DB |
993 | |
994 | switch (mode) { | |
995 | case OFF: | |
996 | chgconfig &= ~TPS65013_AUA; /* disable AUA bit */ | |
997 | vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */ | |
998 | break; | |
999 | /* case ON: */ | |
1000 | default: | |
1001 | chgconfig |= TPS65013_AUA; /* enable AUA bit */ | |
1002 | vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */ | |
1003 | break; | |
1004 | } | |
1005 | ||
b5067f8f | 1006 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
1007 | TPS_CHGCONFIG, chgconfig); |
1008 | if (status != 0) { | |
1009 | printk(KERN_ERR "%s: Failed to write chconfig register\n", | |
1010 | DRIVER_NAME); | |
5c085d36 | 1011 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
1012 | return status; |
1013 | } | |
1014 | ||
b5067f8f | 1015 | chgconfig = i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG); |
72cd7995 DB |
1016 | the_tps->chgconf = chgconfig; |
1017 | show_chgconfig(0, "chgconf", chgconfig); | |
1018 | ||
b5067f8f | 1019 | status = i2c_smbus_write_byte_data(the_tps->client, |
72cd7995 DB |
1020 | TPS_VDCDC1, vdcdc1); |
1021 | ||
1022 | if (status != 0) | |
1023 | printk(KERN_ERR "%s: Failed to write vdcdc1 register\n", | |
1024 | DRIVER_NAME); | |
1025 | else | |
1026 | pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME, | |
b5067f8f | 1027 | i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1)); |
72cd7995 | 1028 | |
5c085d36 | 1029 | mutex_unlock(&the_tps->lock); |
72cd7995 DB |
1030 | |
1031 | return status; | |
1032 | } | |
1033 | EXPORT_SYMBOL(tps65013_set_low_pwr); | |
1034 | ||
1035 | /*-------------------------------------------------------------------------*/ | |
1036 | ||
1037 | static int __init tps_init(void) | |
1038 | { | |
1039 | u32 tries = 3; | |
1040 | int status = -ENODEV; | |
1041 | ||
1042 | printk(KERN_INFO "%s: version %s\n", DRIVER_NAME, DRIVER_VERSION); | |
1043 | ||
1044 | /* some boards have startup glitches */ | |
1045 | while (tries--) { | |
1046 | status = i2c_add_driver(&tps65010_driver); | |
1047 | if (the_tps) | |
1048 | break; | |
1049 | i2c_del_driver(&tps65010_driver); | |
1050 | if (!tries) { | |
1051 | printk(KERN_ERR "%s: no chip?\n", DRIVER_NAME); | |
1052 | return -ENODEV; | |
1053 | } | |
1054 | pr_debug("%s: re-probe ...\n", DRIVER_NAME); | |
1055 | msleep(10); | |
1056 | } | |
1057 | ||
72cd7995 DB |
1058 | return status; |
1059 | } | |
1060 | /* NOTE: this MUST be initialized before the other parts of the system | |
1061 | * that rely on it ... but after the i2c bus on which this relies. | |
1062 | * That is, much earlier than on PC-type systems, which don't often use | |
1063 | * I2C as a core system bus. | |
1064 | */ | |
1065 | subsys_initcall(tps_init); | |
1066 | ||
1067 | static void __exit tps_exit(void) | |
1068 | { | |
1069 | i2c_del_driver(&tps65010_driver); | |
1070 | } | |
1071 | module_exit(tps_exit); | |
1072 |