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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * tps65010 - driver for tps6501x power management chips4 *5 * Copyright (C) 2004 Texas Instruments6 * Copyright (C) 2004-2005 David Brownell7 */8 9#include <linux/kernel.h>10#include <linux/module.h>11#include <linux/init.h>12#include <linux/slab.h>13#include <linux/interrupt.h>14#include <linux/i2c.h>15#include <linux/delay.h>16#include <linux/workqueue.h>17#include <linux/debugfs.h>18#include <linux/seq_file.h>19#include <linux/mutex.h>20#include <linux/platform_device.h>21 22#include <linux/mfd/tps65010.h>23 24#include <linux/gpio/driver.h>25 26 27/*-------------------------------------------------------------------------*/28 29#define DRIVER_VERSION "2 May 2005"30#define DRIVER_NAME (tps65010_driver.driver.name)31 32MODULE_DESCRIPTION("TPS6501x Power Management Driver");33MODULE_LICENSE("GPL");34 35static struct i2c_driver tps65010_driver;36 37/*-------------------------------------------------------------------------*/38 39/* This driver handles a family of multipurpose chips, which incorporate40 * voltage regulators, lithium ion/polymer battery charging, GPIOs, LEDs,41 * and other features often needed in portable devices like cell phones42 * or digital cameras.43 *44 * The tps65011 and tps65013 have different voltage settings compared45 * to tps65010 and tps65012. The tps65013 has a NO_CHG status/irq.46 * All except tps65010 have "wait" mode, possibly defaulted so that47 * battery-insert != device-on.48 *49 * We could distinguish between some models by checking VDCDC1.UVLO or50 * other registers, unless they've been changed already after powerup51 * as part of board setup by a bootloader.52 */53enum tps_model {54 TPS65010,55 TPS65011,56 TPS65012,57 TPS65013,58};59 60struct tps65010 {61 struct i2c_client *client;62 struct mutex lock;63 struct delayed_work work;64 struct dentry *file;65 unsigned charging:1;66 unsigned por:1;67 unsigned model:8;68 u16 vbus;69 unsigned long flags;70#define FLAG_VBUS_CHANGED 071#define FLAG_IRQ_ENABLE 172 73 /* copies of last register state */74 u8 chgstatus, regstatus, chgconf;75 u8 nmask1, nmask2;76 77 u8 outmask;78 struct gpio_chip chip;79 struct platform_device *leds;80};81 82#define POWER_POLL_DELAY msecs_to_jiffies(5000)83 84/*-------------------------------------------------------------------------*/85 86#if defined(DEBUG) || defined(CONFIG_DEBUG_FS)87 88static void dbg_chgstat(char *buf, size_t len, u8 chgstatus)89{90 snprintf(buf, len, "%02x%s%s%s%s%s%s%s%s\n",91 chgstatus,92 (chgstatus & TPS_CHG_USB) ? " USB" : "",93 (chgstatus & TPS_CHG_AC) ? " AC" : "",94 (chgstatus & TPS_CHG_THERM) ? " therm" : "",95 (chgstatus & TPS_CHG_TERM) ? " done" :96 ((chgstatus & (TPS_CHG_USB|TPS_CHG_AC))97 ? " (charging)" : ""),98 (chgstatus & TPS_CHG_TAPER_TMO) ? " taper_tmo" : "",99 (chgstatus & TPS_CHG_CHG_TMO) ? " charge_tmo" : "",100 (chgstatus & TPS_CHG_PRECHG_TMO) ? " prechg_tmo" : "",101 (chgstatus & TPS_CHG_TEMP_ERR) ? " temp_err" : "");102}103 104static void dbg_regstat(char *buf, size_t len, u8 regstatus)105{106 snprintf(buf, len, "%02x %s%s%s%s%s%s%s%s\n",107 regstatus,108 (regstatus & TPS_REG_ONOFF) ? "off" : "(on)",109 (regstatus & TPS_REG_COVER) ? " uncover" : "",110 (regstatus & TPS_REG_UVLO) ? " UVLO" : "",111 (regstatus & TPS_REG_NO_CHG) ? " NO_CHG" : "",112 (regstatus & TPS_REG_PG_LD02) ? " ld02_bad" : "",113 (regstatus & TPS_REG_PG_LD01) ? " ld01_bad" : "",114 (regstatus & TPS_REG_PG_MAIN) ? " main_bad" : "",115 (regstatus & TPS_REG_PG_CORE) ? " core_bad" : "");116}117 118static void dbg_chgconf(int por, char *buf, size_t len, u8 chgconfig)119{120 const char *hibit;121 122 if (por)123 hibit = (chgconfig & TPS_CHARGE_POR)124 ? "POR=69ms" : "POR=1sec";125 else126 hibit = (chgconfig & TPS65013_AUA) ? "AUA" : "";127 128 snprintf(buf, len, "%02x %s%s%s AC=%d%% USB=%dmA %sCharge\n",129 chgconfig, hibit,130 (chgconfig & TPS_CHARGE_RESET) ? " reset" : "",131 (chgconfig & TPS_CHARGE_FAST) ? " fast" : "",132 ({int p; switch ((chgconfig >> 3) & 3) {133 case 3: p = 100; break;134 case 2: p = 75; break;135 case 1: p = 50; break;136 default: p = 25; break;137 }; p; }),138 (chgconfig & TPS_VBUS_CHARGING)139 ? ((chgconfig & TPS_VBUS_500MA) ? 500 : 100)140 : 0,141 (chgconfig & TPS_CHARGE_ENABLE) ? "" : "No");142}143 144#endif145 146#ifdef DEBUG147 148static void show_chgstatus(const char *label, u8 chgstatus)149{150 char buf [100];151 152 dbg_chgstat(buf, sizeof buf, chgstatus);153 pr_debug("%s: %s %s", DRIVER_NAME, label, buf);154}155 156static void show_regstatus(const char *label, u8 regstatus)157{158 char buf [100];159 160 dbg_regstat(buf, sizeof buf, regstatus);161 pr_debug("%s: %s %s", DRIVER_NAME, label, buf);162}163 164static void show_chgconfig(int por, const char *label, u8 chgconfig)165{166 char buf [100];167 168 dbg_chgconf(por, buf, sizeof buf, chgconfig);169 pr_debug("%s: %s %s", DRIVER_NAME, label, buf);170}171 172#else173 174static inline void show_chgstatus(const char *label, u8 chgstatus) { }175static inline void show_regstatus(const char *label, u8 chgstatus) { }176static inline void show_chgconfig(int por, const char *label, u8 chgconfig) { }177 178#endif179 180#ifdef CONFIG_DEBUG_FS181 182static int dbg_show(struct seq_file *s, void *_)183{184 struct tps65010 *tps = s->private;185 u8 value, v2;186 unsigned i;187 char buf[100];188 const char *chip;189 190 switch (tps->model) {191 case TPS65010: chip = "tps65010"; break;192 case TPS65011: chip = "tps65011"; break;193 case TPS65012: chip = "tps65012"; break;194 case TPS65013: chip = "tps65013"; break;195 default: chip = NULL; break;196 }197 seq_printf(s, "driver %s\nversion %s\nchip %s\n\n",198 DRIVER_NAME, DRIVER_VERSION, chip);199 200 mutex_lock(&tps->lock);201 202 /* FIXME how can we tell whether a battery is present?203 * likely involves a charge gauging chip (like BQ26501).204 */205 206 seq_printf(s, "%scharging\n\n", tps->charging ? "" : "(not) ");207 208 209 /* registers for monitoring battery charging and status; note210 * that reading chgstat and regstat may ack IRQs...211 */212 value = i2c_smbus_read_byte_data(tps->client, TPS_CHGCONFIG);213 dbg_chgconf(tps->por, buf, sizeof buf, value);214 seq_printf(s, "chgconfig %s", buf);215 216 value = i2c_smbus_read_byte_data(tps->client, TPS_CHGSTATUS);217 dbg_chgstat(buf, sizeof buf, value);218 seq_printf(s, "chgstat %s", buf);219 value = i2c_smbus_read_byte_data(tps->client, TPS_MASK1);220 dbg_chgstat(buf, sizeof buf, value);221 seq_printf(s, "mask1 %s", buf);222 /* ignore ackint1 */223 224 value = i2c_smbus_read_byte_data(tps->client, TPS_REGSTATUS);225 dbg_regstat(buf, sizeof buf, value);226 seq_printf(s, "regstat %s", buf);227 value = i2c_smbus_read_byte_data(tps->client, TPS_MASK2);228 dbg_regstat(buf, sizeof buf, value);229 seq_printf(s, "mask2 %s\n", buf);230 /* ignore ackint2 */231 232 queue_delayed_work(system_power_efficient_wq, &tps->work,233 POWER_POLL_DELAY);234 235 /* VMAIN voltage, enable lowpower, etc */236 value = i2c_smbus_read_byte_data(tps->client, TPS_VDCDC1);237 seq_printf(s, "vdcdc1 %02x\n", value);238 239 /* VCORE voltage, vibrator on/off */240 value = i2c_smbus_read_byte_data(tps->client, TPS_VDCDC2);241 seq_printf(s, "vdcdc2 %02x\n", value);242 243 /* both LD0s, and their lowpower behavior */244 value = i2c_smbus_read_byte_data(tps->client, TPS_VREGS1);245 seq_printf(s, "vregs1 %02x\n\n", value);246 247 248 /* LEDs and GPIOs */249 value = i2c_smbus_read_byte_data(tps->client, TPS_LED1_ON);250 v2 = i2c_smbus_read_byte_data(tps->client, TPS_LED1_PER);251 seq_printf(s, "led1 %s, on=%02x, per=%02x, %d/%d msec\n",252 (value & 0x80)253 ? ((v2 & 0x80) ? "on" : "off")254 : ((v2 & 0x80) ? "blink" : "(nPG)"),255 value, v2,256 (value & 0x7f) * 10, (v2 & 0x7f) * 100);257 258 value = i2c_smbus_read_byte_data(tps->client, TPS_LED2_ON);259 v2 = i2c_smbus_read_byte_data(tps->client, TPS_LED2_PER);260 seq_printf(s, "led2 %s, on=%02x, per=%02x, %d/%d msec\n",261 (value & 0x80)262 ? ((v2 & 0x80) ? "on" : "off")263 : ((v2 & 0x80) ? "blink" : "off"),264 value, v2,265 (value & 0x7f) * 10, (v2 & 0x7f) * 100);266 267 value = i2c_smbus_read_byte_data(tps->client, TPS_DEFGPIO);268 v2 = i2c_smbus_read_byte_data(tps->client, TPS_MASK3);269 seq_printf(s, "defgpio %02x mask3 %02x\n", value, v2);270 271 for (i = 0; i < 4; i++) {272 if (value & (1 << (4 + i)))273 seq_printf(s, " gpio%d-out %s\n", i + 1,274 (value & (1 << i)) ? "low" : "hi ");275 else276 seq_printf(s, " gpio%d-in %s %s %s\n", i + 1,277 (value & (1 << i)) ? "hi " : "low",278 (v2 & (1 << i)) ? "no-irq" : "irq",279 (v2 & (1 << (4 + i))) ? "rising" : "falling");280 }281 282 mutex_unlock(&tps->lock);283 return 0;284}285 286static int dbg_tps_open(struct inode *inode, struct file *file)287{288 return single_open(file, dbg_show, inode->i_private);289}290 291static const struct file_operations debug_fops = {292 .open = dbg_tps_open,293 .read = seq_read,294 .llseek = seq_lseek,295 .release = single_release,296};297 298#define DEBUG_FOPS &debug_fops299 300#else301#define DEBUG_FOPS NULL302#endif303 304/*-------------------------------------------------------------------------*/305 306/* handle IRQS in a task context, so we can use I2C calls */307static void tps65010_interrupt(struct tps65010 *tps)308{309 u8 tmp = 0, mask, poll;310 311 /* IRQs won't trigger for certain events, but we can get312 * others by polling (normally, with external power applied).313 */314 poll = 0;315 316 /* regstatus irqs */317 if (tps->nmask2) {318 tmp = i2c_smbus_read_byte_data(tps->client, TPS_REGSTATUS);319 mask = tmp ^ tps->regstatus;320 tps->regstatus = tmp;321 mask &= tps->nmask2;322 } else323 mask = 0;324 if (mask) {325 tps->regstatus = tmp;326 /* may need to shut something down ... */327 328 /* "off" usually means deep sleep */329 if (tmp & TPS_REG_ONOFF) {330 pr_info("%s: power off button\n", DRIVER_NAME);331#if 0332 /* REVISIT: this might need its own workqueue333 * plus tweaks including deadlock avoidance ...334 * also needs to get error handling and probably335 * an #ifdef CONFIG_HIBERNATION336 */337 hibernate();338#endif339 poll = 1;340 }341 }342 343 /* chgstatus irqs */344 if (tps->nmask1) {345 tmp = i2c_smbus_read_byte_data(tps->client, TPS_CHGSTATUS);346 mask = tmp ^ tps->chgstatus;347 tps->chgstatus = tmp;348 mask &= tps->nmask1;349 } else350 mask = 0;351 if (mask) {352 unsigned charging = 0;353 354 show_chgstatus("chg/irq", tmp);355 if (tmp & (TPS_CHG_USB|TPS_CHG_AC))356 show_chgconfig(tps->por, "conf", tps->chgconf);357 358 /* Unless it was turned off or disabled, we charge any359 * battery whenever there's power available for it360 * and the charger hasn't been disabled.361 */362 if (!(tps->chgstatus & ~(TPS_CHG_USB|TPS_CHG_AC))363 && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))364 && (tps->chgconf & TPS_CHARGE_ENABLE)365 ) {366 if (tps->chgstatus & TPS_CHG_USB) {367 /* VBUS options are readonly until reconnect */368 if (mask & TPS_CHG_USB)369 set_bit(FLAG_VBUS_CHANGED, &tps->flags);370 charging = 1;371 } else if (tps->chgstatus & TPS_CHG_AC)372 charging = 1;373 }374 if (charging != tps->charging) {375 tps->charging = charging;376 pr_info("%s: battery %scharging\n",377 DRIVER_NAME, charging ? "" :378 ((tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))379 ? "NOT " : "dis"));380 }381 }382 383 /* always poll to detect (a) power removal, without tps65013384 * NO_CHG IRQ; or (b) restart of charging after stop.385 */386 if ((tps->model != TPS65013 || !tps->charging)387 && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)))388 poll = 1;389 if (poll)390 queue_delayed_work(system_power_efficient_wq, &tps->work,391 POWER_POLL_DELAY);392 393 /* also potentially gpio-in rise or fall */394}395 396/* handle IRQs and polling using keventd for now */397static void tps65010_work(struct work_struct *work)398{399 struct tps65010 *tps;400 401 tps = container_of(to_delayed_work(work), struct tps65010, work);402 mutex_lock(&tps->lock);403 404 tps65010_interrupt(tps);405 406 if (test_and_clear_bit(FLAG_VBUS_CHANGED, &tps->flags)) {407 u8 chgconfig, tmp;408 409 chgconfig = i2c_smbus_read_byte_data(tps->client,410 TPS_CHGCONFIG);411 chgconfig &= ~(TPS_VBUS_500MA | TPS_VBUS_CHARGING);412 if (tps->vbus == 500)413 chgconfig |= TPS_VBUS_500MA | TPS_VBUS_CHARGING;414 else if (tps->vbus >= 100)415 chgconfig |= TPS_VBUS_CHARGING;416 417 i2c_smbus_write_byte_data(tps->client,418 TPS_CHGCONFIG, chgconfig);419 420 /* vbus update fails unless VBUS is connected! */421 tmp = i2c_smbus_read_byte_data(tps->client, TPS_CHGCONFIG);422 tps->chgconf = tmp;423 show_chgconfig(tps->por, "update vbus", tmp);424 }425 426 if (test_and_clear_bit(FLAG_IRQ_ENABLE, &tps->flags))427 enable_irq(tps->client->irq);428 429 mutex_unlock(&tps->lock);430}431 432static irqreturn_t tps65010_irq(int irq, void *_tps)433{434 struct tps65010 *tps = _tps;435 436 disable_irq_nosync(irq);437 set_bit(FLAG_IRQ_ENABLE, &tps->flags);438 queue_delayed_work(system_power_efficient_wq, &tps->work, 0);439 return IRQ_HANDLED;440}441 442/*-------------------------------------------------------------------------*/443 444/* offsets 0..3 == GPIO1..GPIO4445 * offsets 4..5 == LED1/nPG, LED2 (we set one of the non-BLINK modes)446 * offset 6 == vibrator motor driver447 */448static void449tps65010_gpio_set(struct gpio_chip *chip, unsigned offset, int value)450{451 if (offset < 4)452 tps65010_set_gpio_out_value(offset + 1, value);453 else if (offset < 6)454 tps65010_set_led(offset - 3, value ? ON : OFF);455 else456 tps65010_set_vib(value);457}458 459static int460tps65010_output(struct gpio_chip *chip, unsigned offset, int value)461{462 /* GPIOs may be input-only */463 if (offset < 4) {464 struct tps65010 *tps;465 466 tps = gpiochip_get_data(chip);467 if (!(tps->outmask & (1 << offset)))468 return -EINVAL;469 tps65010_set_gpio_out_value(offset + 1, value);470 } else if (offset < 6)471 tps65010_set_led(offset - 3, value ? ON : OFF);472 else473 tps65010_set_vib(value);474 475 return 0;476}477 478static int tps65010_gpio_get(struct gpio_chip *chip, unsigned offset)479{480 int value;481 struct tps65010 *tps;482 483 tps = gpiochip_get_data(chip);484 485 if (offset < 4) {486 value = i2c_smbus_read_byte_data(tps->client, TPS_DEFGPIO);487 if (value < 0)488 return value;489 if (value & (1 << (offset + 4))) /* output */490 return !(value & (1 << offset));491 else /* input */492 return !!(value & (1 << offset));493 }494 495 /* REVISIT we *could* report LED1/nPG and LED2 state ... */496 return 0;497}498 499 500/*-------------------------------------------------------------------------*/501 502static struct tps65010 *the_tps;503 504static void tps65010_remove(struct i2c_client *client)505{506 struct tps65010 *tps = i2c_get_clientdata(client);507 struct tps65010_board *board = dev_get_platdata(&client->dev);508 509 if (board && board->teardown)510 board->teardown(client, &tps->chip);511 if (client->irq > 0)512 free_irq(client->irq, tps);513 cancel_delayed_work_sync(&tps->work);514 debugfs_remove(tps->file);515 the_tps = NULL;516}517 518static int tps65010_probe(struct i2c_client *client)519{520 const struct i2c_device_id *id = i2c_client_get_device_id(client);521 struct tps65010 *tps;522 int status;523 struct tps65010_board *board = dev_get_platdata(&client->dev);524 525 if (the_tps) {526 dev_dbg(&client->dev, "only one tps6501x chip allowed\n");527 return -ENODEV;528 }529 530 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))531 return -EINVAL;532 533 tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);534 if (!tps)535 return -ENOMEM;536 537 mutex_init(&tps->lock);538 INIT_DELAYED_WORK(&tps->work, tps65010_work);539 tps->client = client;540 tps->model = id->driver_data;541 542 /* the IRQ is active low, but many gpio lines can't support that543 * so this driver uses falling-edge triggers instead.544 */545 if (client->irq > 0) {546 status = request_irq(client->irq, tps65010_irq,547 IRQF_TRIGGER_FALLING, DRIVER_NAME, tps);548 if (status < 0) {549 dev_dbg(&client->dev, "can't get IRQ %d, err %d\n",550 client->irq, status);551 return status;552 }553 /* annoying race here, ideally we'd have an option554 * to claim the irq now and enable it later.555 * FIXME genirq IRQF_NOAUTOEN now solves that ...556 */557 disable_irq(client->irq);558 set_bit(FLAG_IRQ_ENABLE, &tps->flags);559 } else560 dev_warn(&client->dev, "IRQ not configured!\n");561 562 563 switch (tps->model) {564 case TPS65010:565 case TPS65012:566 tps->por = 1;567 break;568 /* else CHGCONFIG.POR is replaced by AUA, enabling a WAIT mode */569 }570 tps->chgconf = i2c_smbus_read_byte_data(client, TPS_CHGCONFIG);571 show_chgconfig(tps->por, "conf/init", tps->chgconf);572 573 show_chgstatus("chg/init",574 i2c_smbus_read_byte_data(client, TPS_CHGSTATUS));575 show_regstatus("reg/init",576 i2c_smbus_read_byte_data(client, TPS_REGSTATUS));577 578 pr_debug("%s: vdcdc1 0x%02x, vdcdc2 %02x, vregs1 %02x\n", DRIVER_NAME,579 i2c_smbus_read_byte_data(client, TPS_VDCDC1),580 i2c_smbus_read_byte_data(client, TPS_VDCDC2),581 i2c_smbus_read_byte_data(client, TPS_VREGS1));582 pr_debug("%s: defgpio 0x%02x, mask3 0x%02x\n", DRIVER_NAME,583 i2c_smbus_read_byte_data(client, TPS_DEFGPIO),584 i2c_smbus_read_byte_data(client, TPS_MASK3));585 586 i2c_set_clientdata(client, tps);587 the_tps = tps;588 589#if defined(CONFIG_USB_GADGET) && !defined(CONFIG_USB_OTG)590 /* USB hosts can't draw VBUS. OTG devices could, later591 * when OTG infrastructure enables it. USB peripherals592 * could be relying on VBUS while booting, though.593 */594 tps->vbus = 100;595#endif596 597 /* unmask the "interesting" irqs, then poll once to598 * kickstart monitoring, initialize shadowed status599 * registers, and maybe disable VBUS draw.600 */601 tps->nmask1 = ~0;602 (void) i2c_smbus_write_byte_data(client, TPS_MASK1, ~tps->nmask1);603 604 tps->nmask2 = TPS_REG_ONOFF;605 if (tps->model == TPS65013)606 tps->nmask2 |= TPS_REG_NO_CHG;607 (void) i2c_smbus_write_byte_data(client, TPS_MASK2, ~tps->nmask2);608 609 (void) i2c_smbus_write_byte_data(client, TPS_MASK3, 0x0f610 | i2c_smbus_read_byte_data(client, TPS_MASK3));611 612 tps65010_work(&tps->work.work);613 614 tps->file = debugfs_create_file(DRIVER_NAME, S_IRUGO, NULL,615 tps, DEBUG_FOPS);616 617 /* optionally register GPIOs */618 if (board) {619 tps->outmask = board->outmask;620 621 tps->chip.label = client->name;622 tps->chip.parent = &client->dev;623 tps->chip.owner = THIS_MODULE;624 625 tps->chip.set = tps65010_gpio_set;626 tps->chip.direction_output = tps65010_output;627 628 /* NOTE: only partial support for inputs; nyet IRQs */629 tps->chip.get = tps65010_gpio_get;630 631 tps->chip.base = -1;632 tps->chip.ngpio = 7;633 tps->chip.can_sleep = 1;634 635 status = gpiochip_add_data(&tps->chip, tps);636 if (status < 0)637 dev_err(&client->dev, "can't add gpiochip, err %d\n",638 status);639 else if (board->setup) {640 status = board->setup(client, &tps->chip);641 if (status < 0) {642 dev_dbg(&client->dev,643 "board %s %s err %d\n",644 "setup", client->name, status);645 status = 0;646 }647 }648 }649 650 return 0;651}652 653static const struct i2c_device_id tps65010_id[] = {654 { "tps65010", TPS65010 },655 { "tps65011", TPS65011 },656 { "tps65012", TPS65012 },657 { "tps65013", TPS65013 },658 { "tps65014", TPS65011 }, /* tps65011 charging at 6.5V max */659 { }660};661MODULE_DEVICE_TABLE(i2c, tps65010_id);662 663static struct i2c_driver tps65010_driver = {664 .driver = {665 .name = "tps65010",666 },667 .probe = tps65010_probe,668 .remove = tps65010_remove,669 .id_table = tps65010_id,670};671 672/*-------------------------------------------------------------------------*/673 674/* Draw from VBUS:675 * 0 mA -- DON'T DRAW (might supply power instead)676 * 100 mA -- usb unit load (slowest charge rate)677 * 500 mA -- usb high power (fast battery charge)678 */679int tps65010_set_vbus_draw(unsigned mA)680{681 unsigned long flags;682 683 if (!the_tps)684 return -ENODEV;685 686 /* assumes non-SMP */687 local_irq_save(flags);688 if (mA >= 500)689 mA = 500;690 else if (mA >= 100)691 mA = 100;692 else693 mA = 0;694 the_tps->vbus = mA;695 if ((the_tps->chgstatus & TPS_CHG_USB)696 && test_and_set_bit(697 FLAG_VBUS_CHANGED, &the_tps->flags)) {698 /* gadget drivers call this in_irq() */699 queue_delayed_work(system_power_efficient_wq, &the_tps->work,700 0);701 }702 local_irq_restore(flags);703 704 return 0;705}706EXPORT_SYMBOL(tps65010_set_vbus_draw);707 708/*-------------------------------------------------------------------------*/709/* tps65010_set_gpio_out_value parameter:710 * gpio: GPIO1, GPIO2, GPIO3 or GPIO4711 * value: LOW or HIGH712 */713int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)714{715 int status;716 unsigned defgpio;717 718 if (!the_tps)719 return -ENODEV;720 if ((gpio < GPIO1) || (gpio > GPIO4))721 return -EINVAL;722 723 mutex_lock(&the_tps->lock);724 725 defgpio = i2c_smbus_read_byte_data(the_tps->client, TPS_DEFGPIO);726 727 /* Configure GPIO for output */728 defgpio |= 1 << (gpio + 3);729 730 /* Writing 1 forces a logic 0 on that GPIO and vice versa */731 switch (value) {732 case LOW:733 defgpio |= 1 << (gpio - 1); /* set GPIO low by writing 1 */734 break;735 /* case HIGH: */736 default:737 defgpio &= ~(1 << (gpio - 1)); /* set GPIO high by writing 0 */738 break;739 }740 741 status = i2c_smbus_write_byte_data(the_tps->client,742 TPS_DEFGPIO, defgpio);743 744 pr_debug("%s: gpio%dout = %s, defgpio 0x%02x\n", DRIVER_NAME,745 gpio, value ? "high" : "low",746 i2c_smbus_read_byte_data(the_tps->client, TPS_DEFGPIO));747 748 mutex_unlock(&the_tps->lock);749 return status;750}751EXPORT_SYMBOL(tps65010_set_gpio_out_value);752 753/*-------------------------------------------------------------------------*/754/* tps65010_set_led parameter:755 * led: LED1 or LED2756 * mode: ON, OFF or BLINK757 */758int tps65010_set_led(unsigned led, unsigned mode)759{760 int status;761 unsigned led_on, led_per, offs;762 763 if (!the_tps)764 return -ENODEV;765 766 if (led == LED1)767 offs = 0;768 else {769 offs = 2;770 led = LED2;771 }772 773 mutex_lock(&the_tps->lock);774 775 pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led,776 i2c_smbus_read_byte_data(the_tps->client,777 TPS_LED1_ON + offs));778 779 pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led,780 i2c_smbus_read_byte_data(the_tps->client,781 TPS_LED1_PER + offs));782 783 switch (mode) {784 case OFF:785 led_on = 1 << 7;786 led_per = 0 << 7;787 break;788 case ON:789 led_on = 1 << 7;790 led_per = 1 << 7;791 break;792 case BLINK:793 led_on = 0x30 | (0 << 7);794 led_per = 0x08 | (1 << 7);795 break;796 default:797 printk(KERN_ERR "%s: Wrong mode parameter for set_led()\n",798 DRIVER_NAME);799 mutex_unlock(&the_tps->lock);800 return -EINVAL;801 }802 803 status = i2c_smbus_write_byte_data(the_tps->client,804 TPS_LED1_ON + offs, led_on);805 806 if (status != 0) {807 printk(KERN_ERR "%s: Failed to write led%i_on register\n",808 DRIVER_NAME, led);809 mutex_unlock(&the_tps->lock);810 return status;811 }812 813 pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led,814 i2c_smbus_read_byte_data(the_tps->client, TPS_LED1_ON + offs));815 816 status = i2c_smbus_write_byte_data(the_tps->client,817 TPS_LED1_PER + offs, led_per);818 819 if (status != 0) {820 printk(KERN_ERR "%s: Failed to write led%i_per register\n",821 DRIVER_NAME, led);822 mutex_unlock(&the_tps->lock);823 return status;824 }825 826 pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led,827 i2c_smbus_read_byte_data(the_tps->client,828 TPS_LED1_PER + offs));829 830 mutex_unlock(&the_tps->lock);831 832 return status;833}834EXPORT_SYMBOL(tps65010_set_led);835 836/*-------------------------------------------------------------------------*/837/* tps65010_set_vib parameter:838 * value: ON or OFF839 */840int tps65010_set_vib(unsigned value)841{842 int status;843 unsigned vdcdc2;844 845 if (!the_tps)846 return -ENODEV;847 848 mutex_lock(&the_tps->lock);849 850 vdcdc2 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC2);851 vdcdc2 &= ~(1 << 1);852 if (value)853 vdcdc2 |= (1 << 1);854 status = i2c_smbus_write_byte_data(the_tps->client,855 TPS_VDCDC2, vdcdc2);856 857 pr_debug("%s: vibrator %s\n", DRIVER_NAME, value ? "on" : "off");858 859 mutex_unlock(&the_tps->lock);860 return status;861}862EXPORT_SYMBOL(tps65010_set_vib);863 864/*-------------------------------------------------------------------------*/865/* tps65010_set_low_pwr parameter:866 * mode: ON or OFF867 */868int tps65010_set_low_pwr(unsigned mode)869{870 int status;871 unsigned vdcdc1;872 873 if (!the_tps)874 return -ENODEV;875 876 mutex_lock(&the_tps->lock);877 878 pr_debug("%s: %s low_pwr, vdcdc1 0x%02x\n", DRIVER_NAME,879 mode ? "enable" : "disable",880 i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));881 882 vdcdc1 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1);883 884 switch (mode) {885 case OFF:886 vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */887 break;888 /* case ON: */889 default:890 vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */891 break;892 }893 894 status = i2c_smbus_write_byte_data(the_tps->client,895 TPS_VDCDC1, vdcdc1);896 897 if (status != 0)898 printk(KERN_ERR "%s: Failed to write vdcdc1 register\n",899 DRIVER_NAME);900 else901 pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME,902 i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));903 904 mutex_unlock(&the_tps->lock);905 906 return status;907}908EXPORT_SYMBOL(tps65010_set_low_pwr);909 910/*-------------------------------------------------------------------------*/911/* tps65010_config_vregs1 parameter:912 * value to be written to VREGS1 register913 * Note: The complete register is written, set all bits you need914 */915int tps65010_config_vregs1(unsigned value)916{917 int status;918 919 if (!the_tps)920 return -ENODEV;921 922 mutex_lock(&the_tps->lock);923 924 pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,925 i2c_smbus_read_byte_data(the_tps->client, TPS_VREGS1));926 927 status = i2c_smbus_write_byte_data(the_tps->client,928 TPS_VREGS1, value);929 930 if (status != 0)931 printk(KERN_ERR "%s: Failed to write vregs1 register\n",932 DRIVER_NAME);933 else934 pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,935 i2c_smbus_read_byte_data(the_tps->client, TPS_VREGS1));936 937 mutex_unlock(&the_tps->lock);938 939 return status;940}941EXPORT_SYMBOL(tps65010_config_vregs1);942 943int tps65010_config_vdcdc2(unsigned value)944{945 struct i2c_client *c;946 int status;947 948 if (!the_tps)949 return -ENODEV;950 951 c = the_tps->client;952 mutex_lock(&the_tps->lock);953 954 pr_debug("%s: vdcdc2 0x%02x\n", DRIVER_NAME,955 i2c_smbus_read_byte_data(c, TPS_VDCDC2));956 957 status = i2c_smbus_write_byte_data(c, TPS_VDCDC2, value);958 959 if (status != 0)960 printk(KERN_ERR "%s: Failed to write vdcdc2 register\n",961 DRIVER_NAME);962 else963 pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,964 i2c_smbus_read_byte_data(c, TPS_VDCDC2));965 966 mutex_unlock(&the_tps->lock);967 return status;968}969EXPORT_SYMBOL(tps65010_config_vdcdc2);970 971/*-------------------------------------------------------------------------*/972/* tps65013_set_low_pwr parameter:973 * mode: ON or OFF974 */975 976/* FIXME: Assumes AC or USB power is present. Setting AUA bit is not977 required if power supply is through a battery */978 979int tps65013_set_low_pwr(unsigned mode)980{981 int status;982 unsigned vdcdc1, chgconfig;983 984 if (!the_tps || the_tps->por)985 return -ENODEV;986 987 mutex_lock(&the_tps->lock);988 989 pr_debug("%s: %s low_pwr, chgconfig 0x%02x vdcdc1 0x%02x\n",990 DRIVER_NAME,991 mode ? "enable" : "disable",992 i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG),993 i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));994 995 chgconfig = i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG);996 vdcdc1 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1);997 998 switch (mode) {999 case OFF:1000 chgconfig &= ~TPS65013_AUA; /* disable AUA bit */1001 vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */1002 break;1003 /* case ON: */1004 default:1005 chgconfig |= TPS65013_AUA; /* enable AUA bit */1006 vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */1007 break;1008 }1009 1010 status = i2c_smbus_write_byte_data(the_tps->client,1011 TPS_CHGCONFIG, chgconfig);1012 if (status != 0) {1013 printk(KERN_ERR "%s: Failed to write chconfig register\n",1014 DRIVER_NAME);1015 mutex_unlock(&the_tps->lock);1016 return status;1017 }1018 1019 chgconfig = i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG);1020 the_tps->chgconf = chgconfig;1021 show_chgconfig(0, "chgconf", chgconfig);1022 1023 status = i2c_smbus_write_byte_data(the_tps->client,1024 TPS_VDCDC1, vdcdc1);1025 1026 if (status != 0)1027 printk(KERN_ERR "%s: Failed to write vdcdc1 register\n",1028 DRIVER_NAME);1029 else1030 pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME,1031 i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));1032 1033 mutex_unlock(&the_tps->lock);1034 1035 return status;1036}1037EXPORT_SYMBOL(tps65013_set_low_pwr);1038 1039/*-------------------------------------------------------------------------*/1040 1041static int __init tps_init(void)1042{1043 return i2c_add_driver(&tps65010_driver);1044}1045/* NOTE: this MUST be initialized before the other parts of the system1046 * that rely on it ... but after the i2c bus on which this relies.1047 * That is, much earlier than on PC-type systems, which don't often use1048 * I2C as a core system bus.1049 */1050subsys_initcall(tps_init);1051 1052static void __exit tps_exit(void)1053{1054 i2c_del_driver(&tps65010_driver);1055}1056module_exit(tps_exit);1057 1058