1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * tps65010 - driver for tps6501x power management chips
5 * Copyright (C) 2004 Texas Instruments
6 * Copyright (C) 2004-2005 David Brownell
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>
22 #include <linux/mfd/tps65010.h>
24 #include <linux/gpio/driver.h>
27 /*-------------------------------------------------------------------------*/
29 #define DRIVER_VERSION "2 May 2005"
30 #define DRIVER_NAME (tps65010_driver.driver.name)
32 MODULE_DESCRIPTION("TPS6501x Power Management Driver");
33 MODULE_LICENSE("GPL");
35 static struct i2c_driver tps65010_driver;
37 /*-------------------------------------------------------------------------*/
39 /* This driver handles a family of multipurpose chips, which incorporate
40 * voltage regulators, lithium ion/polymer battery charging, GPIOs, LEDs,
41 * and other features often needed in portable devices like cell phones
44 * The tps65011 and tps65013 have different voltage settings compared
45 * to tps65010 and tps65012. The tps65013 has a NO_CHG status/irq.
46 * All except tps65010 have "wait" mode, possibly defaulted so that
47 * battery-insert != device-on.
49 * We could distinguish between some models by checking VDCDC1.UVLO or
50 * other registers, unless they've been changed already after powerup
51 * as part of board setup by a bootloader.
61 struct i2c_client *client;
63 struct delayed_work work;
70 #define FLAG_VBUS_CHANGED 0
71 #define FLAG_IRQ_ENABLE 1
73 /* copies of last register state */
74 u8 chgstatus, regstatus, chgconf;
78 struct gpio_chip chip;
79 struct platform_device *leds;
82 #define POWER_POLL_DELAY msecs_to_jiffies(5000)
84 /*-------------------------------------------------------------------------*/
86 #if defined(DEBUG) || defined(CONFIG_DEBUG_FS)
88 static void dbg_chgstat(char *buf, size_t len, u8 chgstatus)
90 snprintf(buf, len, "%02x%s%s%s%s%s%s%s%s\n",
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" : "");
104 static void dbg_regstat(char *buf, size_t len, u8 regstatus)
106 snprintf(buf, len, "%02x %s%s%s%s%s%s%s%s\n",
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" : "");
118 static void dbg_chgconf(int por, char *buf, size_t len, u8 chgconfig)
123 hibit = (chgconfig & TPS_CHARGE_POR)
124 ? "POR=69ms" : "POR=1sec";
126 hibit = (chgconfig & TPS65013_AUA) ? "AUA" : "";
128 snprintf(buf, len, "%02x %s%s%s AC=%d%% USB=%dmA %sCharge\n",
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;
138 (chgconfig & TPS_VBUS_CHARGING)
139 ? ((chgconfig & TPS_VBUS_500MA) ? 500 : 100)
141 (chgconfig & TPS_CHARGE_ENABLE) ? "" : "No");
148 static void show_chgstatus(const char *label, u8 chgstatus)
152 dbg_chgstat(buf, sizeof buf, chgstatus);
153 pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
156 static void show_regstatus(const char *label, u8 regstatus)
160 dbg_regstat(buf, sizeof buf, regstatus);
161 pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
164 static void show_chgconfig(int por, const char *label, u8 chgconfig)
168 dbg_chgconf(por, buf, sizeof buf, chgconfig);
169 pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
174 static inline void show_chgstatus(const char *label, u8 chgstatus) { }
175 static inline void show_regstatus(const char *label, u8 chgstatus) { }
176 static inline void show_chgconfig(int por, const char *label, u8 chgconfig) { }
180 #ifdef CONFIG_DEBUG_FS
182 static int dbg_show(struct seq_file *s, void *_)
184 struct tps65010 *tps = s->private;
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;
197 seq_printf(s, "driver %s\nversion %s\nchip %s\n\n",
198 DRIVER_NAME, DRIVER_VERSION, chip);
200 mutex_lock(&tps->lock);
202 /* FIXME how can we tell whether a battery is present?
203 * likely involves a charge gauging chip (like BQ26501).
206 seq_printf(s, "%scharging\n\n", tps->charging ? "" : "(not) ");
209 /* registers for monitoring battery charging and status; note
210 * that reading chgstat and regstat may ack IRQs...
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);
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);
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);
232 queue_delayed_work(system_power_efficient_wq, &tps->work,
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);
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);
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);
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",
253 ? ((v2 & 0x80) ? "on" : "off")
254 : ((v2 & 0x80) ? "blink" : "(nPG)"),
256 (value & 0x7f) * 10, (v2 & 0x7f) * 100);
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",
262 ? ((v2 & 0x80) ? "on" : "off")
263 : ((v2 & 0x80) ? "blink" : "off"),
265 (value & 0x7f) * 10, (v2 & 0x7f) * 100);
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);
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 ");
276 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");
282 mutex_unlock(&tps->lock);
286 static int dbg_tps_open(struct inode *inode, struct file *file)
288 return single_open(file, dbg_show, inode->i_private);
291 static const struct file_operations debug_fops = {
292 .open = dbg_tps_open,
295 .release = single_release,
298 #define DEBUG_FOPS &debug_fops
301 #define DEBUG_FOPS NULL
304 /*-------------------------------------------------------------------------*/
306 /* handle IRQS in a task context, so we can use I2C calls */
307 static void tps65010_interrupt(struct tps65010 *tps)
309 u8 tmp = 0, mask, poll;
311 /* IRQs won't trigger for certain events, but we can get
312 * others by polling (normally, with external power applied).
318 tmp = i2c_smbus_read_byte_data(tps->client, TPS_REGSTATUS);
319 mask = tmp ^ tps->regstatus;
320 tps->regstatus = tmp;
325 tps->regstatus = tmp;
326 /* may need to shut something down ... */
328 /* "off" usually means deep sleep */
329 if (tmp & TPS_REG_ONOFF) {
330 pr_info("%s: power off button\n", DRIVER_NAME);
332 /* REVISIT: this might need its own workqueue
333 * plus tweaks including deadlock avoidance ...
334 * also needs to get error handling and probably
335 * an #ifdef CONFIG_HIBERNATION
345 tmp = i2c_smbus_read_byte_data(tps->client, TPS_CHGSTATUS);
346 mask = tmp ^ tps->chgstatus;
347 tps->chgstatus = tmp;
352 unsigned charging = 0;
354 show_chgstatus("chg/irq", tmp);
355 if (tmp & (TPS_CHG_USB|TPS_CHG_AC))
356 show_chgconfig(tps->por, "conf", tps->chgconf);
358 /* Unless it was turned off or disabled, we charge any
359 * battery whenever there's power available for it
360 * and the charger hasn't been disabled.
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)
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);
371 } else if (tps->chgstatus & TPS_CHG_AC)
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))
383 /* always poll to detect (a) power removal, without tps65013
384 * NO_CHG IRQ; or (b) restart of charging after stop.
386 if ((tps->model != TPS65013 || !tps->charging)
387 && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)))
390 queue_delayed_work(system_power_efficient_wq, &tps->work,
393 /* also potentially gpio-in rise or fall */
396 /* handle IRQs and polling using keventd for now */
397 static void tps65010_work(struct work_struct *work)
399 struct tps65010 *tps;
401 tps = container_of(to_delayed_work(work), struct tps65010, work);
402 mutex_lock(&tps->lock);
404 tps65010_interrupt(tps);
406 if (test_and_clear_bit(FLAG_VBUS_CHANGED, &tps->flags)) {
409 chgconfig = i2c_smbus_read_byte_data(tps->client,
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;
417 i2c_smbus_write_byte_data(tps->client,
418 TPS_CHGCONFIG, chgconfig);
420 /* vbus update fails unless VBUS is connected! */
421 tmp = i2c_smbus_read_byte_data(tps->client, TPS_CHGCONFIG);
423 show_chgconfig(tps->por, "update vbus", tmp);
426 if (test_and_clear_bit(FLAG_IRQ_ENABLE, &tps->flags))
427 enable_irq(tps->client->irq);
429 mutex_unlock(&tps->lock);
432 static irqreturn_t tps65010_irq(int irq, void *_tps)
434 struct tps65010 *tps = _tps;
436 disable_irq_nosync(irq);
437 set_bit(FLAG_IRQ_ENABLE, &tps->flags);
438 queue_delayed_work(system_power_efficient_wq, &tps->work, 0);
442 /*-------------------------------------------------------------------------*/
444 /* offsets 0..3 == GPIO1..GPIO4
445 * offsets 4..5 == LED1/nPG, LED2 (we set one of the non-BLINK modes)
446 * offset 6 == vibrator motor driver
449 tps65010_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
452 tps65010_set_gpio_out_value(offset + 1, value);
454 tps65010_set_led(offset - 3, value ? ON : OFF);
456 tps65010_set_vib(value);
460 tps65010_output(struct gpio_chip *chip, unsigned offset, int value)
462 /* GPIOs may be input-only */
464 struct tps65010 *tps;
466 tps = gpiochip_get_data(chip);
467 if (!(tps->outmask & (1 << offset)))
469 tps65010_set_gpio_out_value(offset + 1, value);
470 } else if (offset < 6)
471 tps65010_set_led(offset - 3, value ? ON : OFF);
473 tps65010_set_vib(value);
478 static int tps65010_gpio_get(struct gpio_chip *chip, unsigned offset)
481 struct tps65010 *tps;
483 tps = gpiochip_get_data(chip);
486 value = i2c_smbus_read_byte_data(tps->client, TPS_DEFGPIO);
489 if (value & (1 << (offset + 4))) /* output */
490 return !(value & (1 << offset));
492 return !!(value & (1 << offset));
495 /* REVISIT we *could* report LED1/nPG and LED2 state ... */
500 /*-------------------------------------------------------------------------*/
502 static struct tps65010 *the_tps;
504 static int tps65010_remove(struct i2c_client *client)
506 struct tps65010 *tps = i2c_get_clientdata(client);
507 struct tps65010_board *board = dev_get_platdata(&client->dev);
509 if (board && board->teardown) {
510 int status = board->teardown(client, board->context);
512 dev_dbg(&client->dev, "board %s %s err %d\n",
513 "teardown", client->name, status);
516 free_irq(client->irq, tps);
517 cancel_delayed_work_sync(&tps->work);
518 debugfs_remove(tps->file);
523 static int tps65010_probe(struct i2c_client *client,
524 const struct i2c_device_id *id)
526 struct tps65010 *tps;
528 struct tps65010_board *board = dev_get_platdata(&client->dev);
531 dev_dbg(&client->dev, "only one tps6501x chip allowed\n");
535 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
538 tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
542 mutex_init(&tps->lock);
543 INIT_DELAYED_WORK(&tps->work, tps65010_work);
544 tps->client = client;
545 tps->model = id->driver_data;
547 /* the IRQ is active low, but many gpio lines can't support that
548 * so this driver uses falling-edge triggers instead.
550 if (client->irq > 0) {
551 status = request_irq(client->irq, tps65010_irq,
552 IRQF_TRIGGER_FALLING, DRIVER_NAME, tps);
554 dev_dbg(&client->dev, "can't get IRQ %d, err %d\n",
555 client->irq, status);
558 /* annoying race here, ideally we'd have an option
559 * to claim the irq now and enable it later.
560 * FIXME genirq IRQF_NOAUTOEN now solves that ...
562 disable_irq(client->irq);
563 set_bit(FLAG_IRQ_ENABLE, &tps->flags);
565 dev_warn(&client->dev, "IRQ not configured!\n");
568 switch (tps->model) {
573 /* else CHGCONFIG.POR is replaced by AUA, enabling a WAIT mode */
575 tps->chgconf = i2c_smbus_read_byte_data(client, TPS_CHGCONFIG);
576 show_chgconfig(tps->por, "conf/init", tps->chgconf);
578 show_chgstatus("chg/init",
579 i2c_smbus_read_byte_data(client, TPS_CHGSTATUS));
580 show_regstatus("reg/init",
581 i2c_smbus_read_byte_data(client, TPS_REGSTATUS));
583 pr_debug("%s: vdcdc1 0x%02x, vdcdc2 %02x, vregs1 %02x\n", DRIVER_NAME,
584 i2c_smbus_read_byte_data(client, TPS_VDCDC1),
585 i2c_smbus_read_byte_data(client, TPS_VDCDC2),
586 i2c_smbus_read_byte_data(client, TPS_VREGS1));
587 pr_debug("%s: defgpio 0x%02x, mask3 0x%02x\n", DRIVER_NAME,
588 i2c_smbus_read_byte_data(client, TPS_DEFGPIO),
589 i2c_smbus_read_byte_data(client, TPS_MASK3));
591 i2c_set_clientdata(client, tps);
594 #if defined(CONFIG_USB_GADGET) && !defined(CONFIG_USB_OTG)
595 /* USB hosts can't draw VBUS. OTG devices could, later
596 * when OTG infrastructure enables it. USB peripherals
597 * could be relying on VBUS while booting, though.
602 /* unmask the "interesting" irqs, then poll once to
603 * kickstart monitoring, initialize shadowed status
604 * registers, and maybe disable VBUS draw.
607 (void) i2c_smbus_write_byte_data(client, TPS_MASK1, ~tps->nmask1);
609 tps->nmask2 = TPS_REG_ONOFF;
610 if (tps->model == TPS65013)
611 tps->nmask2 |= TPS_REG_NO_CHG;
612 (void) i2c_smbus_write_byte_data(client, TPS_MASK2, ~tps->nmask2);
614 (void) i2c_smbus_write_byte_data(client, TPS_MASK3, 0x0f
615 | i2c_smbus_read_byte_data(client, TPS_MASK3));
617 tps65010_work(&tps->work.work);
619 tps->file = debugfs_create_file(DRIVER_NAME, S_IRUGO, NULL,
622 /* optionally register GPIOs */
623 if (board && board->base != 0) {
624 tps->outmask = board->outmask;
626 tps->chip.label = client->name;
627 tps->chip.parent = &client->dev;
628 tps->chip.owner = THIS_MODULE;
630 tps->chip.set = tps65010_gpio_set;
631 tps->chip.direction_output = tps65010_output;
633 /* NOTE: only partial support for inputs; nyet IRQs */
634 tps->chip.get = tps65010_gpio_get;
636 tps->chip.base = board->base;
638 tps->chip.can_sleep = 1;
640 status = gpiochip_add_data(&tps->chip, tps);
642 dev_err(&client->dev, "can't add gpiochip, err %d\n",
644 else if (board->setup) {
645 status = board->setup(client, board->context);
647 dev_dbg(&client->dev,
648 "board %s %s err %d\n",
649 "setup", client->name, status);
658 static const struct i2c_device_id tps65010_id[] = {
659 { "tps65010", TPS65010 },
660 { "tps65011", TPS65011 },
661 { "tps65012", TPS65012 },
662 { "tps65013", TPS65013 },
663 { "tps65014", TPS65011 }, /* tps65011 charging at 6.5V max */
666 MODULE_DEVICE_TABLE(i2c, tps65010_id);
668 static struct i2c_driver tps65010_driver = {
672 .probe = tps65010_probe,
673 .remove = tps65010_remove,
674 .id_table = tps65010_id,
677 /*-------------------------------------------------------------------------*/
680 * 0 mA -- DON'T DRAW (might supply power instead)
681 * 100 mA -- usb unit load (slowest charge rate)
682 * 500 mA -- usb high power (fast battery charge)
684 int tps65010_set_vbus_draw(unsigned mA)
691 /* assumes non-SMP */
692 local_irq_save(flags);
700 if ((the_tps->chgstatus & TPS_CHG_USB)
702 FLAG_VBUS_CHANGED, &the_tps->flags)) {
703 /* gadget drivers call this in_irq() */
704 queue_delayed_work(system_power_efficient_wq, &the_tps->work,
707 local_irq_restore(flags);
711 EXPORT_SYMBOL(tps65010_set_vbus_draw);
713 /*-------------------------------------------------------------------------*/
714 /* tps65010_set_gpio_out_value parameter:
715 * gpio: GPIO1, GPIO2, GPIO3 or GPIO4
718 int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
725 if ((gpio < GPIO1) || (gpio > GPIO4))
728 mutex_lock(&the_tps->lock);
730 defgpio = i2c_smbus_read_byte_data(the_tps->client, TPS_DEFGPIO);
732 /* Configure GPIO for output */
733 defgpio |= 1 << (gpio + 3);
735 /* Writing 1 forces a logic 0 on that GPIO and vice versa */
738 defgpio |= 1 << (gpio - 1); /* set GPIO low by writing 1 */
742 defgpio &= ~(1 << (gpio - 1)); /* set GPIO high by writing 0 */
746 status = i2c_smbus_write_byte_data(the_tps->client,
747 TPS_DEFGPIO, defgpio);
749 pr_debug("%s: gpio%dout = %s, defgpio 0x%02x\n", DRIVER_NAME,
750 gpio, value ? "high" : "low",
751 i2c_smbus_read_byte_data(the_tps->client, TPS_DEFGPIO));
753 mutex_unlock(&the_tps->lock);
756 EXPORT_SYMBOL(tps65010_set_gpio_out_value);
758 /*-------------------------------------------------------------------------*/
759 /* tps65010_set_led parameter:
761 * mode: ON, OFF or BLINK
763 int tps65010_set_led(unsigned led, unsigned mode)
766 unsigned led_on, led_per, offs;
778 mutex_lock(&the_tps->lock);
780 pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led,
781 i2c_smbus_read_byte_data(the_tps->client,
782 TPS_LED1_ON + offs));
784 pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led,
785 i2c_smbus_read_byte_data(the_tps->client,
786 TPS_LED1_PER + offs));
798 led_on = 0x30 | (0 << 7);
799 led_per = 0x08 | (1 << 7);
802 printk(KERN_ERR "%s: Wrong mode parameter for set_led()\n",
804 mutex_unlock(&the_tps->lock);
808 status = i2c_smbus_write_byte_data(the_tps->client,
809 TPS_LED1_ON + offs, led_on);
812 printk(KERN_ERR "%s: Failed to write led%i_on register\n",
814 mutex_unlock(&the_tps->lock);
818 pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led,
819 i2c_smbus_read_byte_data(the_tps->client, TPS_LED1_ON + offs));
821 status = i2c_smbus_write_byte_data(the_tps->client,
822 TPS_LED1_PER + offs, led_per);
825 printk(KERN_ERR "%s: Failed to write led%i_per register\n",
827 mutex_unlock(&the_tps->lock);
831 pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led,
832 i2c_smbus_read_byte_data(the_tps->client,
833 TPS_LED1_PER + offs));
835 mutex_unlock(&the_tps->lock);
839 EXPORT_SYMBOL(tps65010_set_led);
841 /*-------------------------------------------------------------------------*/
842 /* tps65010_set_vib parameter:
845 int tps65010_set_vib(unsigned value)
853 mutex_lock(&the_tps->lock);
855 vdcdc2 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC2);
859 status = i2c_smbus_write_byte_data(the_tps->client,
862 pr_debug("%s: vibrator %s\n", DRIVER_NAME, value ? "on" : "off");
864 mutex_unlock(&the_tps->lock);
867 EXPORT_SYMBOL(tps65010_set_vib);
869 /*-------------------------------------------------------------------------*/
870 /* tps65010_set_low_pwr parameter:
873 int tps65010_set_low_pwr(unsigned mode)
881 mutex_lock(&the_tps->lock);
883 pr_debug("%s: %s low_pwr, vdcdc1 0x%02x\n", DRIVER_NAME,
884 mode ? "enable" : "disable",
885 i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
887 vdcdc1 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1);
891 vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */
895 vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */
899 status = i2c_smbus_write_byte_data(the_tps->client,
903 printk(KERN_ERR "%s: Failed to write vdcdc1 register\n",
906 pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME,
907 i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
909 mutex_unlock(&the_tps->lock);
913 EXPORT_SYMBOL(tps65010_set_low_pwr);
915 /*-------------------------------------------------------------------------*/
916 /* tps65010_config_vregs1 parameter:
917 * value to be written to VREGS1 register
918 * Note: The complete register is written, set all bits you need
920 int tps65010_config_vregs1(unsigned value)
927 mutex_lock(&the_tps->lock);
929 pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,
930 i2c_smbus_read_byte_data(the_tps->client, TPS_VREGS1));
932 status = i2c_smbus_write_byte_data(the_tps->client,
936 printk(KERN_ERR "%s: Failed to write vregs1 register\n",
939 pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,
940 i2c_smbus_read_byte_data(the_tps->client, TPS_VREGS1));
942 mutex_unlock(&the_tps->lock);
946 EXPORT_SYMBOL(tps65010_config_vregs1);
948 int tps65010_config_vdcdc2(unsigned value)
950 struct i2c_client *c;
957 mutex_lock(&the_tps->lock);
959 pr_debug("%s: vdcdc2 0x%02x\n", DRIVER_NAME,
960 i2c_smbus_read_byte_data(c, TPS_VDCDC2));
962 status = i2c_smbus_write_byte_data(c, TPS_VDCDC2, value);
965 printk(KERN_ERR "%s: Failed to write vdcdc2 register\n",
968 pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,
969 i2c_smbus_read_byte_data(c, TPS_VDCDC2));
971 mutex_unlock(&the_tps->lock);
974 EXPORT_SYMBOL(tps65010_config_vdcdc2);
976 /*-------------------------------------------------------------------------*/
977 /* tps65013_set_low_pwr parameter:
981 /* FIXME: Assumes AC or USB power is present. Setting AUA bit is not
982 required if power supply is through a battery */
984 int tps65013_set_low_pwr(unsigned mode)
987 unsigned vdcdc1, chgconfig;
989 if (!the_tps || the_tps->por)
992 mutex_lock(&the_tps->lock);
994 pr_debug("%s: %s low_pwr, chgconfig 0x%02x vdcdc1 0x%02x\n",
996 mode ? "enable" : "disable",
997 i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG),
998 i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
1000 chgconfig = i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG);
1001 vdcdc1 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1);
1005 chgconfig &= ~TPS65013_AUA; /* disable AUA bit */
1006 vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */
1010 chgconfig |= TPS65013_AUA; /* enable AUA bit */
1011 vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */
1015 status = i2c_smbus_write_byte_data(the_tps->client,
1016 TPS_CHGCONFIG, chgconfig);
1018 printk(KERN_ERR "%s: Failed to write chconfig register\n",
1020 mutex_unlock(&the_tps->lock);
1024 chgconfig = i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG);
1025 the_tps->chgconf = chgconfig;
1026 show_chgconfig(0, "chgconf", chgconfig);
1028 status = i2c_smbus_write_byte_data(the_tps->client,
1029 TPS_VDCDC1, vdcdc1);
1032 printk(KERN_ERR "%s: Failed to write vdcdc1 register\n",
1035 pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME,
1036 i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
1038 mutex_unlock(&the_tps->lock);
1042 EXPORT_SYMBOL(tps65013_set_low_pwr);
1044 /*-------------------------------------------------------------------------*/
1046 static int __init tps_init(void)
1048 return i2c_add_driver(&tps65010_driver);
1050 /* NOTE: this MUST be initialized before the other parts of the system
1051 * that rely on it ... but after the i2c bus on which this relies.
1052 * That is, much earlier than on PC-type systems, which don't often use
1053 * I2C as a core system bus.
1055 subsys_initcall(tps_init);
1057 static void __exit tps_exit(void)
1059 i2c_del_driver(&tps65010_driver);
1061 module_exit(tps_exit);