2 * tps65010 - driver for tps6501x power management chips
4 * Copyright (C) 2004 Texas Instruments
5 * Copyright (C) 2004-2005 David Brownell
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.
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.
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.
23 #include <linux/config.h>
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/slab.h>
28 #include <linux/interrupt.h>
29 #include <linux/device.h>
30 #include <linux/i2c.h>
31 #include <linux/delay.h>
32 #include <linux/workqueue.h>
33 #include <linux/suspend.h>
34 #include <linux/debugfs.h>
35 #include <linux/seq_file.h>
38 #include <asm/mach-types.h>
40 #include <asm/arch/gpio.h>
41 #include <asm/arch/mux.h>
42 #include <asm/arch/tps65010.h>
44 /*-------------------------------------------------------------------------*/
46 #define DRIVER_VERSION "2 May 2005"
47 #define DRIVER_NAME (tps65010_driver.name)
49 MODULE_DESCRIPTION("TPS6501x Power Management Driver");
50 MODULE_LICENSE("GPL");
52 /* only two addresses possible */
54 static unsigned short normal_i2c[] = {
57 static unsigned short normal_i2c_range[] = { I2C_CLIENT_END };
61 static struct i2c_driver tps65010_driver;
63 /*-------------------------------------------------------------------------*/
65 /* This driver handles a family of multipurpose chips, which incorporate
66 * voltage regulators, lithium ion/polymer battery charging, GPIOs, LEDs,
67 * and other features often needed in portable devices like cell phones
70 * The tps65011 and tps65013 have different voltage settings compared
71 * to tps65010 and tps65012. The tps65013 has a NO_CHG status/irq.
72 * All except tps65010 have "wait" mode, possibly defaulted so that
73 * battery-insert != device-on.
75 * We could distinguish between some models by checking VDCDC1.UVLO or
76 * other registers, unless they've been changed already after powerup
77 * as part of board setup by a bootloader.
88 struct i2c_client client;
89 struct semaphore lock;
91 struct work_struct work;
98 #define FLAG_VBUS_CHANGED 0
99 #define FLAG_IRQ_ENABLE 1
101 /* copies of last register state */
102 u8 chgstatus, regstatus, chgconf;
105 /* plus four GPIOs, probably used to switch power */
108 #define POWER_POLL_DELAY msecs_to_jiffies(800)
110 /*-------------------------------------------------------------------------*/
112 #if defined(DEBUG) || defined(CONFIG_DEBUG_FS)
114 static void dbg_chgstat(char *buf, size_t len, u8 chgstatus)
116 snprintf(buf, len, "%02x%s%s%s%s%s%s%s%s\n",
118 (chgstatus & TPS_CHG_USB) ? " USB" : "",
119 (chgstatus & TPS_CHG_AC) ? " AC" : "",
120 (chgstatus & TPS_CHG_THERM) ? " therm" : "",
121 (chgstatus & TPS_CHG_TERM) ? " done" :
122 ((chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
123 ? " (charging)" : ""),
124 (chgstatus & TPS_CHG_TAPER_TMO) ? " taper_tmo" : "",
125 (chgstatus & TPS_CHG_CHG_TMO) ? " charge_tmo" : "",
126 (chgstatus & TPS_CHG_PRECHG_TMO) ? " prechg_tmo" : "",
127 (chgstatus & TPS_CHG_TEMP_ERR) ? " temp_err" : "");
130 static void dbg_regstat(char *buf, size_t len, u8 regstatus)
132 snprintf(buf, len, "%02x %s%s%s%s%s%s%s%s\n",
134 (regstatus & TPS_REG_ONOFF) ? "off" : "(on)",
135 (regstatus & TPS_REG_COVER) ? " uncover" : "",
136 (regstatus & TPS_REG_UVLO) ? " UVLO" : "",
137 (regstatus & TPS_REG_NO_CHG) ? " NO_CHG" : "",
138 (regstatus & TPS_REG_PG_LD02) ? " ld01_bad" : "",
139 (regstatus & TPS_REG_PG_LD01) ? " ld01_bad" : "",
140 (regstatus & TPS_REG_PG_MAIN) ? " main_bad" : "",
141 (regstatus & TPS_REG_PG_CORE) ? " core_bad" : "");
144 static void dbg_chgconf(int por, char *buf, size_t len, u8 chgconfig)
149 hibit = (chgconfig & TPS_CHARGE_POR)
150 ? "POR=69ms" : "POR=1sec";
152 hibit = (chgconfig & TPS65013_AUA) ? "AUA" : "";
154 snprintf(buf, len, "%02x %s%s%s AC=%d%% USB=%dmA %sCharge\n",
156 (chgconfig & TPS_CHARGE_RESET) ? " reset" : "",
157 (chgconfig & TPS_CHARGE_FAST) ? " fast" : "",
158 ({int p; switch ((chgconfig >> 3) & 3) {
159 case 3: p = 100; break;
160 case 2: p = 75; break;
161 case 1: p = 50; break;
162 default: p = 25; break;
164 (chgconfig & TPS_VBUS_CHARGING)
165 ? ((chgconfig & TPS_VBUS_500MA) ? 500 : 100)
167 (chgconfig & TPS_CHARGE_ENABLE) ? "" : "No");
174 static void show_chgstatus(const char *label, u8 chgstatus)
178 dbg_chgstat(buf, sizeof buf, chgstatus);
179 pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
182 static void show_regstatus(const char *label, u8 regstatus)
186 dbg_regstat(buf, sizeof buf, regstatus);
187 pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
190 static void show_chgconfig(int por, const char *label, u8 chgconfig)
194 dbg_chgconf(por, buf, sizeof buf, chgconfig);
195 pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
200 static inline void show_chgstatus(const char *label, u8 chgstatus) { }
201 static inline void show_regstatus(const char *label, u8 chgstatus) { }
202 static inline void show_chgconfig(int por, const char *label, u8 chgconfig) { }
206 #ifdef CONFIG_DEBUG_FS
208 static int dbg_show(struct seq_file *s, void *_)
210 struct tps65010 *tps = s->private;
216 switch (tps->model) {
217 case TPS65010: chip = "tps65010"; break;
218 case TPS65011: chip = "tps65011"; break;
219 case TPS65012: chip = "tps65012"; break;
220 case TPS65013: chip = "tps65013"; break;
221 default: chip = NULL; break;
223 seq_printf(s, "driver %s\nversion %s\nchip %s\n\n",
224 DRIVER_NAME, DRIVER_VERSION, chip);
228 /* FIXME how can we tell whether a battery is present?
229 * likely involves a charge gauging chip (like BQ26501).
232 seq_printf(s, "%scharging\n\n", tps->charging ? "" : "(not) ");
235 /* registers for monitoring battery charging and status; note
236 * that reading chgstat and regstat may ack IRQs...
238 value = i2c_smbus_read_byte_data(&tps->client, TPS_CHGCONFIG);
239 dbg_chgconf(tps->por, buf, sizeof buf, value);
240 seq_printf(s, "chgconfig %s", buf);
242 value = i2c_smbus_read_byte_data(&tps->client, TPS_CHGSTATUS);
243 dbg_chgstat(buf, sizeof buf, value);
244 seq_printf(s, "chgstat %s", buf);
245 value = i2c_smbus_read_byte_data(&tps->client, TPS_MASK1);
246 dbg_chgstat(buf, sizeof buf, value);
247 seq_printf(s, "mask1 %s", buf);
250 value = i2c_smbus_read_byte_data(&tps->client, TPS_REGSTATUS);
251 dbg_regstat(buf, sizeof buf, value);
252 seq_printf(s, "regstat %s", buf);
253 value = i2c_smbus_read_byte_data(&tps->client, TPS_MASK2);
254 dbg_regstat(buf, sizeof buf, value);
255 seq_printf(s, "mask2 %s\n", buf);
258 (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY);
261 /* VMAIN voltage, enable lowpower, etc */
262 value = i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC1);
263 seq_printf(s, "vdcdc1 %02x\n", value);
265 /* VCORE voltage, vibrator on/off */
266 value = i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC2);
267 seq_printf(s, "vdcdc2 %02x\n", value);
269 /* both LD0s, and their lowpower behavior */
270 value = i2c_smbus_read_byte_data(&tps->client, TPS_VREGS1);
271 seq_printf(s, "vregs1 %02x\n\n", value);
275 value = i2c_smbus_read_byte_data(&tps->client, TPS_LED1_ON);
276 v2 = i2c_smbus_read_byte_data(&tps->client, TPS_LED1_PER);
277 seq_printf(s, "led1 %s, on=%02x, per=%02x, %d/%d msec\n",
279 ? ((v2 & 0x80) ? "on" : "off")
280 : ((v2 & 0x80) ? "blink" : "(nPG)"),
282 (value & 0x7f) * 10, (v2 & 0x7f) * 100);
284 value = i2c_smbus_read_byte_data(&tps->client, TPS_LED2_ON);
285 v2 = i2c_smbus_read_byte_data(&tps->client, TPS_LED2_PER);
286 seq_printf(s, "led2 %s, on=%02x, per=%02x, %d/%d msec\n",
288 ? ((v2 & 0x80) ? "on" : "off")
289 : ((v2 & 0x80) ? "blink" : "off"),
291 (value & 0x7f) * 10, (v2 & 0x7f) * 100);
293 value = i2c_smbus_read_byte_data(&tps->client, TPS_DEFGPIO);
294 v2 = i2c_smbus_read_byte_data(&tps->client, TPS_MASK3);
295 seq_printf(s, "defgpio %02x mask3 %02x\n", value, v2);
297 for (i = 0; i < 4; i++) {
298 if (value & (1 << (4 +i)))
299 seq_printf(s, " gpio%d-out %s\n", i + 1,
300 (value & (1 << i)) ? "low" : "hi ");
302 seq_printf(s, " gpio%d-in %s %s %s\n", i + 1,
303 (value & (1 << i)) ? "hi " : "low",
304 (v2 & (1 << i)) ? "no-irq" : "irq",
305 (v2 & (1 << (4 + i))) ? "rising" : "falling");
312 static int dbg_tps_open(struct inode *inode, struct file *file)
314 return single_open(file, dbg_show, inode->u.generic_ip);
317 static struct file_operations debug_fops = {
318 .open = dbg_tps_open,
321 .release = single_release,
324 #define DEBUG_FOPS &debug_fops
327 #define DEBUG_FOPS NULL
330 /*-------------------------------------------------------------------------*/
332 /* handle IRQS in a task context, so we can use I2C calls */
333 static void tps65010_interrupt(struct tps65010 *tps)
335 u8 tmp = 0, mask, poll;
337 /* IRQs won't trigger irqs for certain events, but we can get
338 * others by polling (normally, with external power applied).
344 tmp = i2c_smbus_read_byte_data(&tps->client, TPS_REGSTATUS);
345 mask = tmp ^ tps->regstatus;
346 tps->regstatus = tmp;
351 tps->regstatus = tmp;
352 /* may need to shut something down ... */
354 /* "off" usually means deep sleep */
355 if (tmp & TPS_REG_ONOFF) {
356 pr_info("%s: power off button\n", DRIVER_NAME);
358 /* REVISIT: this might need its own workqueue
359 * plus tweaks including deadlock avoidance ...
369 tmp = i2c_smbus_read_byte_data(&tps->client, TPS_CHGSTATUS);
370 mask = tmp ^ tps->chgstatus;
371 tps->chgstatus = tmp;
376 unsigned charging = 0;
378 show_chgstatus("chg/irq", tmp);
379 if (tmp & (TPS_CHG_USB|TPS_CHG_AC))
380 show_chgconfig(tps->por, "conf", tps->chgconf);
382 /* Unless it was turned off or disabled, we charge any
383 * battery whenever there's power available for it
384 * and the charger hasn't been disabled.
386 if (!(tps->chgstatus & ~(TPS_CHG_USB|TPS_CHG_AC))
387 && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
388 && (tps->chgconf & TPS_CHARGE_ENABLE)
390 if (tps->chgstatus & TPS_CHG_USB) {
391 /* VBUS options are readonly until reconnect */
392 if (mask & TPS_CHG_USB)
393 set_bit(FLAG_VBUS_CHANGED, &tps->flags);
395 } else if (tps->chgstatus & TPS_CHG_AC)
398 if (charging != tps->charging) {
399 tps->charging = charging;
400 pr_info("%s: battery %scharging\n",
401 DRIVER_NAME, charging ? "" :
402 ((tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
407 /* always poll to detect (a) power removal, without tps65013
408 * NO_CHG IRQ; or (b) restart of charging after stop.
410 if ((tps->model != TPS65013 || !tps->charging)
411 && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)))
414 (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY);
416 /* also potentially gpio-in rise or fall */
419 /* handle IRQs and polling using keventd for now */
420 static void tps65010_work(void *_tps)
422 struct tps65010 *tps = _tps;
426 tps65010_interrupt(tps);
428 if (test_and_clear_bit(FLAG_VBUS_CHANGED, &tps->flags)) {
432 chgconfig = i2c_smbus_read_byte_data(&tps->client,
434 chgconfig &= ~(TPS_VBUS_500MA | TPS_VBUS_CHARGING);
435 if (tps->vbus == 500)
436 chgconfig |= TPS_VBUS_500MA | TPS_VBUS_CHARGING;
437 else if (tps->vbus >= 100)
438 chgconfig |= TPS_VBUS_CHARGING;
440 status = i2c_smbus_write_byte_data(&tps->client,
441 TPS_CHGCONFIG, chgconfig);
443 /* vbus update fails unless VBUS is connected! */
444 tmp = i2c_smbus_read_byte_data(&tps->client, TPS_CHGCONFIG);
446 show_chgconfig(tps->por, "update vbus", tmp);
449 if (test_and_clear_bit(FLAG_IRQ_ENABLE, &tps->flags))
450 enable_irq(tps->irq);
455 static irqreturn_t tps65010_irq(int irq, void *_tps, struct pt_regs *regs)
457 struct tps65010 *tps = _tps;
459 disable_irq_nosync(irq);
460 set_bit(FLAG_IRQ_ENABLE, &tps->flags);
461 (void) schedule_work(&tps->work);
465 /*-------------------------------------------------------------------------*/
467 static struct tps65010 *the_tps;
469 static int __exit tps65010_detach_client(struct i2c_client *client)
471 struct tps65010 *tps;
473 tps = container_of(client, struct tps65010, client);
475 if (machine_is_omap_h2())
477 if (machine_is_omap_osk())
478 omap_free_gpio(OMAP_MPUIO(1));
480 free_irq(tps->irq, tps);
481 debugfs_remove(tps->file);
482 if (i2c_detach_client(client) == 0)
488 static int tps65010_noscan(struct i2c_adapter *bus)
490 /* pure paranoia, in case someone adds another i2c bus
491 * after our init section's gone...
496 /* no error returns, they'd just make bus scanning stop */
498 tps65010_probe(struct i2c_adapter *bus, int address, int kind)
500 struct tps65010 *tps;
504 dev_dbg(&bus->dev, "only one %s for now\n", DRIVER_NAME);
508 tps = kmalloc(sizeof *tps, GFP_KERNEL);
512 memset(tps, 0, sizeof *tps);
513 init_MUTEX(&tps->lock);
514 INIT_WORK(&tps->work, tps65010_work, tps);
516 tps->client.addr = address;
517 i2c_set_clientdata(&tps->client, tps);
518 tps->client.adapter = bus;
519 tps->client.driver = &tps65010_driver;
520 strlcpy(tps->client.name, DRIVER_NAME, I2C_NAME_SIZE);
522 status = i2c_attach_client(&tps->client);
524 dev_dbg(&bus->dev, "can't attach %s to device %d, err %d\n",
525 DRIVER_NAME, address, status);
532 if (machine_is_omap_h2()) {
533 tps->model = TPS65010;
534 omap_cfg_reg(W4_GPIO58);
535 tps->irq = OMAP_GPIO_IRQ(58);
536 omap_request_gpio(58);
537 omap_set_gpio_direction(58, 1);
538 omap_set_gpio_edge_ctrl(58, OMAP_GPIO_FALLING_EDGE);
540 if (machine_is_omap_osk()) {
541 tps->model = TPS65010;
542 // omap_cfg_reg(U19_1610_MPUIO1);
543 tps->irq = OMAP_GPIO_IRQ(OMAP_MPUIO(1));
544 omap_request_gpio(OMAP_MPUIO(1));
545 omap_set_gpio_direction(OMAP_MPUIO(1), 1);
546 omap_set_gpio_edge_ctrl(OMAP_MPUIO(1), OMAP_GPIO_FALLING_EDGE);
548 if (machine_is_omap_h3()) {
549 tps->model = TPS65013;
551 // FIXME set up this board's IRQ ...
554 #define set_irq_type(num,trigger) do{}while(0)
558 set_irq_type(tps->irq, IRQT_LOW);
559 status = request_irq(tps->irq, tps65010_irq,
560 SA_SAMPLE_RANDOM, DRIVER_NAME, tps);
562 dev_dbg(&tps->client.dev, "can't get IRQ %d, err %d\n",
564 i2c_detach_client(&tps->client);
568 /* annoying race here, ideally we'd have an option
569 * to claim the irq now and enable it later.
571 disable_irq(tps->irq);
572 set_bit(FLAG_IRQ_ENABLE, &tps->flags);
575 printk(KERN_WARNING "%s: IRQ not configured!\n",
579 switch (tps->model) {
585 printk(KERN_WARNING "%s: unknown TPS chip\n", DRIVER_NAME);
587 /* else CHGCONFIG.POR is replaced by AUA, enabling a WAIT mode */
589 tps->chgconf = i2c_smbus_read_byte_data(&tps->client, TPS_CHGCONFIG);
590 show_chgconfig(tps->por, "conf/init", tps->chgconf);
592 show_chgstatus("chg/init",
593 i2c_smbus_read_byte_data(&tps->client, TPS_CHGSTATUS));
594 show_regstatus("reg/init",
595 i2c_smbus_read_byte_data(&tps->client, TPS_REGSTATUS));
597 pr_debug("%s: vdcdc1 0x%02x, vdcdc2 %02x, vregs1 %02x\n", DRIVER_NAME,
598 i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC1),
599 i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC2),
600 i2c_smbus_read_byte_data(&tps->client, TPS_VREGS1));
601 pr_debug("%s: defgpio 0x%02x, mask3 0x%02x\n", DRIVER_NAME,
602 i2c_smbus_read_byte_data(&tps->client, TPS_DEFGPIO),
603 i2c_smbus_read_byte_data(&tps->client, TPS_MASK3));
605 tps65010_driver.attach_adapter = tps65010_noscan;
608 #if defined(CONFIG_USB_GADGET) && !defined(CONFIG_USB_OTG)
609 /* USB hosts can't draw VBUS. OTG devices could, later
610 * when OTG infrastructure enables it. USB peripherals
611 * could be relying on VBUS while booting, though.
616 /* unmask the "interesting" irqs, then poll once to
617 * kickstart monitoring, initialize shadowed status
618 * registers, and maybe disable VBUS draw.
621 (void) i2c_smbus_write_byte_data(&tps->client, TPS_MASK1, ~tps->nmask1);
623 tps->nmask2 = TPS_REG_ONOFF;
624 if (tps->model == TPS65013)
625 tps->nmask2 |= TPS_REG_NO_CHG;
626 (void) i2c_smbus_write_byte_data(&tps->client, TPS_MASK2, ~tps->nmask2);
628 (void) i2c_smbus_write_byte_data(&tps->client, TPS_MASK3, 0x0f
629 | i2c_smbus_read_byte_data(&tps->client, TPS_MASK3));
633 tps->file = debugfs_create_file(DRIVER_NAME, S_IRUGO, NULL,
638 static int __init tps65010_scan_bus(struct i2c_adapter *bus)
640 if (!i2c_check_functionality(bus, I2C_FUNC_SMBUS_BYTE_DATA))
642 return i2c_probe(bus, &addr_data, tps65010_probe);
645 static struct i2c_driver tps65010_driver = {
646 .owner = THIS_MODULE,
648 .id = 888, /* FIXME assign "official" value */
649 .flags = I2C_DF_NOTIFY,
650 .attach_adapter = tps65010_scan_bus,
651 .detach_client = __exit_p(tps65010_detach_client),
654 /*-------------------------------------------------------------------------*/
657 * 0 mA -- DON'T DRAW (might supply power instead)
658 * 100 mA -- usb unit load (slowest charge rate)
659 * 500 mA -- usb high power (fast battery charge)
661 int tps65010_set_vbus_draw(unsigned mA)
668 /* assumes non-SMP */
669 local_irq_save(flags);
677 if ((the_tps->chgstatus & TPS_CHG_USB)
679 FLAG_VBUS_CHANGED, &the_tps->flags)) {
680 /* gadget drivers call this in_irq() */
681 (void) schedule_work(&the_tps->work);
683 local_irq_restore(flags);
687 EXPORT_SYMBOL(tps65010_set_vbus_draw);
689 /*-------------------------------------------------------------------------*/
690 /* tps65010_set_gpio_out_value parameter:
691 * gpio: GPIO1, GPIO2, GPIO3 or GPIO4
694 int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
701 if ((gpio < GPIO1) || (gpio > GPIO4))
704 down(&the_tps->lock);
706 defgpio = i2c_smbus_read_byte_data(&the_tps->client, TPS_DEFGPIO);
708 /* Configure GPIO for output */
709 defgpio |= 1 << (gpio + 3);
711 /* Writing 1 forces a logic 0 on that GPIO and vice versa */
714 defgpio |= 1 << (gpio - 1); /* set GPIO low by writing 1 */
718 defgpio &= ~(1 << (gpio - 1)); /* set GPIO high by writing 0 */
722 status = i2c_smbus_write_byte_data(&the_tps->client,
723 TPS_DEFGPIO, defgpio);
725 pr_debug("%s: gpio%dout = %s, defgpio 0x%02x\n", DRIVER_NAME,
726 gpio, value ? "high" : "low",
727 i2c_smbus_read_byte_data(&the_tps->client, TPS_DEFGPIO));
732 EXPORT_SYMBOL(tps65010_set_gpio_out_value);
734 /*-------------------------------------------------------------------------*/
735 /* tps65010_set_led parameter:
737 * mode: ON, OFF or BLINK
739 int tps65010_set_led(unsigned led, unsigned mode)
742 unsigned led_on, led_per, offs;
754 down(&the_tps->lock);
756 dev_dbg (&the_tps->client.dev, "led%i_on 0x%02x\n", led,
757 i2c_smbus_read_byte_data(&the_tps->client, TPS_LED1_ON + offs));
759 dev_dbg (&the_tps->client.dev, "led%i_per 0x%02x\n", led,
760 i2c_smbus_read_byte_data(&the_tps->client, TPS_LED1_PER + offs));
772 led_on = 0x30 | (0 << 7);
773 led_per = 0x08 | (1 << 7);
776 printk(KERN_ERR "%s: Wrong mode parameter for tps65010_set_led()\n",
782 status = i2c_smbus_write_byte_data(&the_tps->client,
783 TPS_LED1_ON + offs, led_on);
786 printk(KERN_ERR "%s: Failed to write led%i_on register\n",
792 dev_dbg (&the_tps->client.dev, "led%i_on 0x%02x\n", led,
793 i2c_smbus_read_byte_data(&the_tps->client, TPS_LED1_ON + offs));
795 status = i2c_smbus_write_byte_data(&the_tps->client,
796 TPS_LED1_PER + offs, led_per);
799 printk(KERN_ERR "%s: Failed to write led%i_per register\n",
805 dev_dbg (&the_tps->client.dev, "led%i_per 0x%02x\n", led,
806 i2c_smbus_read_byte_data(&the_tps->client, TPS_LED1_PER + offs));
812 EXPORT_SYMBOL(tps65010_set_led);
814 /*-------------------------------------------------------------------------*/
815 /* tps65010_set_vib parameter:
818 int tps65010_set_vib(unsigned value)
826 down(&the_tps->lock);
828 vdcdc2 = i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC2);
832 status = i2c_smbus_write_byte_data(&the_tps->client,
835 pr_debug("%s: vibrator %s\n", DRIVER_NAME, value ? "on" : "off");
840 EXPORT_SYMBOL(tps65010_set_vib);
842 /*-------------------------------------------------------------------------*/
843 /* tps65010_set_low_pwr parameter:
846 int tps65010_set_low_pwr(unsigned mode)
854 down(&the_tps->lock);
856 pr_debug("%s: %s low_pwr, vdcdc1 0x%02x\n", DRIVER_NAME,
857 mode ? "enable" : "disable",
858 i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1));
860 vdcdc1 = i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1);
864 vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */
868 vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */
872 status = i2c_smbus_write_byte_data(&the_tps->client,
876 printk(KERN_ERR "%s: Failed to write vdcdc1 register\n",
879 pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME,
880 i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1));
886 EXPORT_SYMBOL(tps65010_set_low_pwr);
888 /*-------------------------------------------------------------------------*/
889 /* tps65010_config_vregs1 parameter:
890 * value to be written to VREGS1 register
891 * Note: The complete register is written, set all bits you need
893 int tps65010_config_vregs1(unsigned value)
900 down(&the_tps->lock);
902 pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,
903 i2c_smbus_read_byte_data(&the_tps->client, TPS_VREGS1));
905 status = i2c_smbus_write_byte_data(&the_tps->client,
909 printk(KERN_ERR "%s: Failed to write vregs1 register\n",
912 pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,
913 i2c_smbus_read_byte_data(&the_tps->client, TPS_VREGS1));
919 EXPORT_SYMBOL(tps65010_config_vregs1);
921 /*-------------------------------------------------------------------------*/
922 /* tps65013_set_low_pwr parameter:
926 /* FIXME: Assumes AC or USB power is present. Setting AUA bit is not
927 required if power supply is through a battery */
929 int tps65013_set_low_pwr(unsigned mode)
932 unsigned vdcdc1, chgconfig;
934 if (!the_tps || the_tps->por)
937 down(&the_tps->lock);
939 pr_debug("%s: %s low_pwr, chgconfig 0x%02x vdcdc1 0x%02x\n",
941 mode ? "enable" : "disable",
942 i2c_smbus_read_byte_data(&the_tps->client, TPS_CHGCONFIG),
943 i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1));
945 chgconfig = i2c_smbus_read_byte_data(&the_tps->client, TPS_CHGCONFIG);
946 vdcdc1 = i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1);
950 chgconfig &= ~TPS65013_AUA; /* disable AUA bit */
951 vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */
955 chgconfig |= TPS65013_AUA; /* enable AUA bit */
956 vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */
960 status = i2c_smbus_write_byte_data(&the_tps->client,
961 TPS_CHGCONFIG, chgconfig);
963 printk(KERN_ERR "%s: Failed to write chconfig register\n",
969 chgconfig = i2c_smbus_read_byte_data(&the_tps->client, TPS_CHGCONFIG);
970 the_tps->chgconf = chgconfig;
971 show_chgconfig(0, "chgconf", chgconfig);
973 status = i2c_smbus_write_byte_data(&the_tps->client,
977 printk(KERN_ERR "%s: Failed to write vdcdc1 register\n",
980 pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME,
981 i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1));
987 EXPORT_SYMBOL(tps65013_set_low_pwr);
989 /*-------------------------------------------------------------------------*/
991 static int __init tps_init(void)
994 int status = -ENODEV;
996 printk(KERN_INFO "%s: version %s\n", DRIVER_NAME, DRIVER_VERSION);
998 /* some boards have startup glitches */
1000 status = i2c_add_driver(&tps65010_driver);
1003 i2c_del_driver(&tps65010_driver);
1005 printk(KERN_ERR "%s: no chip?\n", DRIVER_NAME);
1008 pr_debug("%s: re-probe ...\n", DRIVER_NAME);
1012 #if defined(CONFIG_ARM)
1013 if (machine_is_omap_osk()) {
1015 // FIXME: More should be placed in the initialization code
1016 // of the submodules (DSP, ethernet, power management,
1017 // board-osk.c). Careful: I2C is initialized "late".
1019 /* Let LED1 (D9) blink */
1020 tps65010_set_led(LED1, BLINK);
1022 /* Disable LED 2 (D2) */
1023 tps65010_set_led(LED2, OFF);
1025 /* Set GPIO 1 HIGH to disable VBUS power supply;
1026 * OHCI driver powers it up/down as needed.
1028 tps65010_set_gpio_out_value(GPIO1, HIGH);
1030 /* Set GPIO 2 low to turn on LED D3 */
1031 tps65010_set_gpio_out_value(GPIO2, HIGH);
1033 /* Set GPIO 3 low to take ethernet out of reset */
1034 tps65010_set_gpio_out_value(GPIO3, LOW);
1036 /* gpio4 for VDD_DSP */
1038 /* Enable LOW_PWR */
1039 tps65010_set_low_pwr(ON);
1041 /* Switch VLDO2 to 3.0V for AIC23 */
1042 tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V | TPS_LDO1_ENABLE);
1044 } else if (machine_is_omap_h2()) {
1045 /* gpio3 for SD, gpio4 for VDD_DSP */
1047 /* Enable LOW_PWR */
1048 tps65010_set_low_pwr(ON);
1049 } else if (machine_is_omap_h3()) {
1050 /* gpio4 for SD, gpio3 for VDD_DSP */
1052 /* Enable LOW_PWR */
1053 tps65013_set_low_pwr(ON);
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.
1065 subsys_initcall(tps_init);
1067 static void __exit tps_exit(void)
1069 i2c_del_driver(&tps65010_driver);
1071 module_exit(tps_exit);