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
);