This driver can also be built as a module. If so, the module
will be called isp1301_omap.
-config TPS65010
- tristate "TPS6501x Power Management chips"
- depends on GPIOLIB
- default y if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_OSK
- help
- If you say yes here you get support for the TPS6501x series of
- Power Management chips. These include voltage regulators,
- lithium ion/polymer battery charging, and other features that
- are often used in portable devices like cell phones and cameras.
-
- This driver can also be built as a module. If so, the module
- will be called tps65010.
-
config SENSORS_MAX6875
tristate "Maxim MAX6875 Power supply supervisor"
depends on EXPERIMENTAL
obj-$(CONFIG_PCF8575) += pcf8575.o
obj-$(CONFIG_SENSORS_PCF8591) += pcf8591.o
obj-$(CONFIG_ISP1301_OMAP) += isp1301_omap.o
-obj-$(CONFIG_TPS65010) += tps65010.o
obj-$(CONFIG_MENELAUS) += menelaus.o
obj-$(CONFIG_SENSORS_TSL2550) += tsl2550.o
obj-$(CONFIG_MCU_MPC8349EMITX) += mcu_mpc8349emitx.o
+++ /dev/null
-/*
- * tps65010 - driver for tps6501x power management chips
- *
- * Copyright (C) 2004 Texas Instruments
- * Copyright (C) 2004-2005 David Brownell
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/i2c.h>
-#include <linux/delay.h>
-#include <linux/workqueue.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-#include <linux/mutex.h>
-#include <linux/platform_device.h>
-
-#include <linux/i2c/tps65010.h>
-
-#include <asm/gpio.h>
-
-
-/*-------------------------------------------------------------------------*/
-
-#define DRIVER_VERSION "2 May 2005"
-#define DRIVER_NAME (tps65010_driver.driver.name)
-
-MODULE_DESCRIPTION("TPS6501x Power Management Driver");
-MODULE_LICENSE("GPL");
-
-static struct i2c_driver tps65010_driver;
-
-/*-------------------------------------------------------------------------*/
-
-/* This driver handles a family of multipurpose chips, which incorporate
- * voltage regulators, lithium ion/polymer battery charging, GPIOs, LEDs,
- * and other features often needed in portable devices like cell phones
- * or digital cameras.
- *
- * The tps65011 and tps65013 have different voltage settings compared
- * to tps65010 and tps65012. The tps65013 has a NO_CHG status/irq.
- * All except tps65010 have "wait" mode, possibly defaulted so that
- * battery-insert != device-on.
- *
- * We could distinguish between some models by checking VDCDC1.UVLO or
- * other registers, unless they've been changed already after powerup
- * as part of board setup by a bootloader.
- */
-enum tps_model {
- TPS65010,
- TPS65011,
- TPS65012,
- TPS65013,
-};
-
-struct tps65010 {
- struct i2c_client *client;
- struct mutex lock;
- struct delayed_work work;
- struct dentry *file;
- unsigned charging:1;
- unsigned por:1;
- unsigned model:8;
- u16 vbus;
- unsigned long flags;
-#define FLAG_VBUS_CHANGED 0
-#define FLAG_IRQ_ENABLE 1
-
- /* copies of last register state */
- u8 chgstatus, regstatus, chgconf;
- u8 nmask1, nmask2;
-
- u8 outmask;
- struct gpio_chip chip;
- struct platform_device *leds;
-};
-
-#define POWER_POLL_DELAY msecs_to_jiffies(5000)
-
-/*-------------------------------------------------------------------------*/
-
-#if defined(DEBUG) || defined(CONFIG_DEBUG_FS)
-
-static void dbg_chgstat(char *buf, size_t len, u8 chgstatus)
-{
- snprintf(buf, len, "%02x%s%s%s%s%s%s%s%s\n",
- chgstatus,
- (chgstatus & TPS_CHG_USB) ? " USB" : "",
- (chgstatus & TPS_CHG_AC) ? " AC" : "",
- (chgstatus & TPS_CHG_THERM) ? " therm" : "",
- (chgstatus & TPS_CHG_TERM) ? " done" :
- ((chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
- ? " (charging)" : ""),
- (chgstatus & TPS_CHG_TAPER_TMO) ? " taper_tmo" : "",
- (chgstatus & TPS_CHG_CHG_TMO) ? " charge_tmo" : "",
- (chgstatus & TPS_CHG_PRECHG_TMO) ? " prechg_tmo" : "",
- (chgstatus & TPS_CHG_TEMP_ERR) ? " temp_err" : "");
-}
-
-static void dbg_regstat(char *buf, size_t len, u8 regstatus)
-{
- snprintf(buf, len, "%02x %s%s%s%s%s%s%s%s\n",
- regstatus,
- (regstatus & TPS_REG_ONOFF) ? "off" : "(on)",
- (regstatus & TPS_REG_COVER) ? " uncover" : "",
- (regstatus & TPS_REG_UVLO) ? " UVLO" : "",
- (regstatus & TPS_REG_NO_CHG) ? " NO_CHG" : "",
- (regstatus & TPS_REG_PG_LD02) ? " ld02_bad" : "",
- (regstatus & TPS_REG_PG_LD01) ? " ld01_bad" : "",
- (regstatus & TPS_REG_PG_MAIN) ? " main_bad" : "",
- (regstatus & TPS_REG_PG_CORE) ? " core_bad" : "");
-}
-
-static void dbg_chgconf(int por, char *buf, size_t len, u8 chgconfig)
-{
- const char *hibit;
-
- if (por)
- hibit = (chgconfig & TPS_CHARGE_POR)
- ? "POR=69ms" : "POR=1sec";
- else
- hibit = (chgconfig & TPS65013_AUA) ? "AUA" : "";
-
- snprintf(buf, len, "%02x %s%s%s AC=%d%% USB=%dmA %sCharge\n",
- chgconfig, hibit,
- (chgconfig & TPS_CHARGE_RESET) ? " reset" : "",
- (chgconfig & TPS_CHARGE_FAST) ? " fast" : "",
- ({int p; switch ((chgconfig >> 3) & 3) {
- case 3: p = 100; break;
- case 2: p = 75; break;
- case 1: p = 50; break;
- default: p = 25; break;
- }; p; }),
- (chgconfig & TPS_VBUS_CHARGING)
- ? ((chgconfig & TPS_VBUS_500MA) ? 500 : 100)
- : 0,
- (chgconfig & TPS_CHARGE_ENABLE) ? "" : "No");
-}
-
-#endif
-
-#ifdef DEBUG
-
-static void show_chgstatus(const char *label, u8 chgstatus)
-{
- char buf [100];
-
- dbg_chgstat(buf, sizeof buf, chgstatus);
- pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
-}
-
-static void show_regstatus(const char *label, u8 regstatus)
-{
- char buf [100];
-
- dbg_regstat(buf, sizeof buf, regstatus);
- pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
-}
-
-static void show_chgconfig(int por, const char *label, u8 chgconfig)
-{
- char buf [100];
-
- dbg_chgconf(por, buf, sizeof buf, chgconfig);
- pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
-}
-
-#else
-
-static inline void show_chgstatus(const char *label, u8 chgstatus) { }
-static inline void show_regstatus(const char *label, u8 chgstatus) { }
-static inline void show_chgconfig(int por, const char *label, u8 chgconfig) { }
-
-#endif
-
-#ifdef CONFIG_DEBUG_FS
-
-static int dbg_show(struct seq_file *s, void *_)
-{
- struct tps65010 *tps = s->private;
- u8 value, v2;
- unsigned i;
- char buf[100];
- const char *chip;
-
- switch (tps->model) {
- case TPS65010: chip = "tps65010"; break;
- case TPS65011: chip = "tps65011"; break;
- case TPS65012: chip = "tps65012"; break;
- case TPS65013: chip = "tps65013"; break;
- default: chip = NULL; break;
- }
- seq_printf(s, "driver %s\nversion %s\nchip %s\n\n",
- DRIVER_NAME, DRIVER_VERSION, chip);
-
- mutex_lock(&tps->lock);
-
- /* FIXME how can we tell whether a battery is present?
- * likely involves a charge gauging chip (like BQ26501).
- */
-
- seq_printf(s, "%scharging\n\n", tps->charging ? "" : "(not) ");
-
-
- /* registers for monitoring battery charging and status; note
- * that reading chgstat and regstat may ack IRQs...
- */
- value = i2c_smbus_read_byte_data(tps->client, TPS_CHGCONFIG);
- dbg_chgconf(tps->por, buf, sizeof buf, value);
- seq_printf(s, "chgconfig %s", buf);
-
- value = i2c_smbus_read_byte_data(tps->client, TPS_CHGSTATUS);
- dbg_chgstat(buf, sizeof buf, value);
- seq_printf(s, "chgstat %s", buf);
- value = i2c_smbus_read_byte_data(tps->client, TPS_MASK1);
- dbg_chgstat(buf, sizeof buf, value);
- seq_printf(s, "mask1 %s", buf);
- /* ignore ackint1 */
-
- value = i2c_smbus_read_byte_data(tps->client, TPS_REGSTATUS);
- dbg_regstat(buf, sizeof buf, value);
- seq_printf(s, "regstat %s", buf);
- value = i2c_smbus_read_byte_data(tps->client, TPS_MASK2);
- dbg_regstat(buf, sizeof buf, value);
- seq_printf(s, "mask2 %s\n", buf);
- /* ignore ackint2 */
-
- (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY);
-
-
- /* VMAIN voltage, enable lowpower, etc */
- value = i2c_smbus_read_byte_data(tps->client, TPS_VDCDC1);
- seq_printf(s, "vdcdc1 %02x\n", value);
-
- /* VCORE voltage, vibrator on/off */
- value = i2c_smbus_read_byte_data(tps->client, TPS_VDCDC2);
- seq_printf(s, "vdcdc2 %02x\n", value);
-
- /* both LD0s, and their lowpower behavior */
- value = i2c_smbus_read_byte_data(tps->client, TPS_VREGS1);
- seq_printf(s, "vregs1 %02x\n\n", value);
-
-
- /* LEDs and GPIOs */
- value = i2c_smbus_read_byte_data(tps->client, TPS_LED1_ON);
- v2 = i2c_smbus_read_byte_data(tps->client, TPS_LED1_PER);
- seq_printf(s, "led1 %s, on=%02x, per=%02x, %d/%d msec\n",
- (value & 0x80)
- ? ((v2 & 0x80) ? "on" : "off")
- : ((v2 & 0x80) ? "blink" : "(nPG)"),
- value, v2,
- (value & 0x7f) * 10, (v2 & 0x7f) * 100);
-
- value = i2c_smbus_read_byte_data(tps->client, TPS_LED2_ON);
- v2 = i2c_smbus_read_byte_data(tps->client, TPS_LED2_PER);
- seq_printf(s, "led2 %s, on=%02x, per=%02x, %d/%d msec\n",
- (value & 0x80)
- ? ((v2 & 0x80) ? "on" : "off")
- : ((v2 & 0x80) ? "blink" : "off"),
- value, v2,
- (value & 0x7f) * 10, (v2 & 0x7f) * 100);
-
- value = i2c_smbus_read_byte_data(tps->client, TPS_DEFGPIO);
- v2 = i2c_smbus_read_byte_data(tps->client, TPS_MASK3);
- seq_printf(s, "defgpio %02x mask3 %02x\n", value, v2);
-
- for (i = 0; i < 4; i++) {
- if (value & (1 << (4 + i)))
- seq_printf(s, " gpio%d-out %s\n", i + 1,
- (value & (1 << i)) ? "low" : "hi ");
- else
- seq_printf(s, " gpio%d-in %s %s %s\n", i + 1,
- (value & (1 << i)) ? "hi " : "low",
- (v2 & (1 << i)) ? "no-irq" : "irq",
- (v2 & (1 << (4 + i))) ? "rising" : "falling");
- }
-
- mutex_unlock(&tps->lock);
- return 0;
-}
-
-static int dbg_tps_open(struct inode *inode, struct file *file)
-{
- return single_open(file, dbg_show, inode->i_private);
-}
-
-static const struct file_operations debug_fops = {
- .open = dbg_tps_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-#define DEBUG_FOPS &debug_fops
-
-#else
-#define DEBUG_FOPS NULL
-#endif
-
-/*-------------------------------------------------------------------------*/
-
-/* handle IRQS in a task context, so we can use I2C calls */
-static void tps65010_interrupt(struct tps65010 *tps)
-{
- u8 tmp = 0, mask, poll;
-
- /* IRQs won't trigger for certain events, but we can get
- * others by polling (normally, with external power applied).
- */
- poll = 0;
-
- /* regstatus irqs */
- if (tps->nmask2) {
- tmp = i2c_smbus_read_byte_data(tps->client, TPS_REGSTATUS);
- mask = tmp ^ tps->regstatus;
- tps->regstatus = tmp;
- mask &= tps->nmask2;
- } else
- mask = 0;
- if (mask) {
- tps->regstatus = tmp;
- /* may need to shut something down ... */
-
- /* "off" usually means deep sleep */
- if (tmp & TPS_REG_ONOFF) {
- pr_info("%s: power off button\n", DRIVER_NAME);
-#if 0
- /* REVISIT: this might need its own workqueue
- * plus tweaks including deadlock avoidance ...
- * also needs to get error handling and probably
- * an #ifdef CONFIG_HIBERNATION
- */
- hibernate();
-#endif
- poll = 1;
- }
- }
-
- /* chgstatus irqs */
- if (tps->nmask1) {
- tmp = i2c_smbus_read_byte_data(tps->client, TPS_CHGSTATUS);
- mask = tmp ^ tps->chgstatus;
- tps->chgstatus = tmp;
- mask &= tps->nmask1;
- } else
- mask = 0;
- if (mask) {
- unsigned charging = 0;
-
- show_chgstatus("chg/irq", tmp);
- if (tmp & (TPS_CHG_USB|TPS_CHG_AC))
- show_chgconfig(tps->por, "conf", tps->chgconf);
-
- /* Unless it was turned off or disabled, we charge any
- * battery whenever there's power available for it
- * and the charger hasn't been disabled.
- */
- if (!(tps->chgstatus & ~(TPS_CHG_USB|TPS_CHG_AC))
- && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
- && (tps->chgconf & TPS_CHARGE_ENABLE)
- ) {
- if (tps->chgstatus & TPS_CHG_USB) {
- /* VBUS options are readonly until reconnect */
- if (mask & TPS_CHG_USB)
- set_bit(FLAG_VBUS_CHANGED, &tps->flags);
- charging = 1;
- } else if (tps->chgstatus & TPS_CHG_AC)
- charging = 1;
- }
- if (charging != tps->charging) {
- tps->charging = charging;
- pr_info("%s: battery %scharging\n",
- DRIVER_NAME, charging ? "" :
- ((tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
- ? "NOT " : "dis"));
- }
- }
-
- /* always poll to detect (a) power removal, without tps65013
- * NO_CHG IRQ; or (b) restart of charging after stop.
- */
- if ((tps->model != TPS65013 || !tps->charging)
- && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)))
- poll = 1;
- if (poll)
- (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY);
-
- /* also potentially gpio-in rise or fall */
-}
-
-/* handle IRQs and polling using keventd for now */
-static void tps65010_work(struct work_struct *work)
-{
- struct tps65010 *tps;
-
- tps = container_of(work, struct tps65010, work.work);
- mutex_lock(&tps->lock);
-
- tps65010_interrupt(tps);
-
- if (test_and_clear_bit(FLAG_VBUS_CHANGED, &tps->flags)) {
- int status;
- u8 chgconfig, tmp;
-
- chgconfig = i2c_smbus_read_byte_data(tps->client,
- TPS_CHGCONFIG);
- chgconfig &= ~(TPS_VBUS_500MA | TPS_VBUS_CHARGING);
- if (tps->vbus == 500)
- chgconfig |= TPS_VBUS_500MA | TPS_VBUS_CHARGING;
- else if (tps->vbus >= 100)
- chgconfig |= TPS_VBUS_CHARGING;
-
- status = i2c_smbus_write_byte_data(tps->client,
- TPS_CHGCONFIG, chgconfig);
-
- /* vbus update fails unless VBUS is connected! */
- tmp = i2c_smbus_read_byte_data(tps->client, TPS_CHGCONFIG);
- tps->chgconf = tmp;
- show_chgconfig(tps->por, "update vbus", tmp);
- }
-
- if (test_and_clear_bit(FLAG_IRQ_ENABLE, &tps->flags))
- enable_irq(tps->client->irq);
-
- mutex_unlock(&tps->lock);
-}
-
-static irqreturn_t tps65010_irq(int irq, void *_tps)
-{
- struct tps65010 *tps = _tps;
-
- disable_irq_nosync(irq);
- set_bit(FLAG_IRQ_ENABLE, &tps->flags);
- (void) schedule_work(&tps->work.work);
- return IRQ_HANDLED;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* offsets 0..3 == GPIO1..GPIO4
- * offsets 4..5 == LED1/nPG, LED2 (we set one of the non-BLINK modes)
- * offset 6 == vibrator motor driver
- */
-static void
-tps65010_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
-{
- if (offset < 4)
- tps65010_set_gpio_out_value(offset + 1, value);
- else if (offset < 6)
- tps65010_set_led(offset - 3, value ? ON : OFF);
- else
- tps65010_set_vib(value);
-}
-
-static int
-tps65010_output(struct gpio_chip *chip, unsigned offset, int value)
-{
- /* GPIOs may be input-only */
- if (offset < 4) {
- struct tps65010 *tps;
-
- tps = container_of(chip, struct tps65010, chip);
- if (!(tps->outmask & (1 << offset)))
- return -EINVAL;
- tps65010_set_gpio_out_value(offset + 1, value);
- } else if (offset < 6)
- tps65010_set_led(offset - 3, value ? ON : OFF);
- else
- tps65010_set_vib(value);
-
- return 0;
-}
-
-static int tps65010_gpio_get(struct gpio_chip *chip, unsigned offset)
-{
- int value;
- struct tps65010 *tps;
-
- tps = container_of(chip, struct tps65010, chip);
-
- if (offset < 4) {
- value = i2c_smbus_read_byte_data(tps->client, TPS_DEFGPIO);
- if (value < 0)
- return 0;
- if (value & (1 << (offset + 4))) /* output */
- return !(value & (1 << offset));
- else /* input */
- return (value & (1 << offset));
- }
-
- /* REVISIT we *could* report LED1/nPG and LED2 state ... */
- return 0;
-}
-
-
-/*-------------------------------------------------------------------------*/
-
-static struct tps65010 *the_tps;
-
-static int __exit tps65010_remove(struct i2c_client *client)
-{
- struct tps65010 *tps = i2c_get_clientdata(client);
- struct tps65010_board *board = client->dev.platform_data;
-
- if (board && board->teardown) {
- int status = board->teardown(client, board->context);
- if (status < 0)
- dev_dbg(&client->dev, "board %s %s err %d\n",
- "teardown", client->name, status);
- }
- if (client->irq > 0)
- free_irq(client->irq, tps);
- cancel_delayed_work(&tps->work);
- flush_scheduled_work();
- debugfs_remove(tps->file);
- kfree(tps);
- i2c_set_clientdata(client, NULL);
- the_tps = NULL;
- return 0;
-}
-
-static int tps65010_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- struct tps65010 *tps;
- int status;
- struct tps65010_board *board = client->dev.platform_data;
-
- if (the_tps) {
- dev_dbg(&client->dev, "only one tps6501x chip allowed\n");
- return -ENODEV;
- }
-
- if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- return -EINVAL;
-
- tps = kzalloc(sizeof *tps, GFP_KERNEL);
- if (!tps)
- return -ENOMEM;
-
- mutex_init(&tps->lock);
- INIT_DELAYED_WORK(&tps->work, tps65010_work);
- tps->client = client;
- tps->model = id->driver_data;
-
- /* the IRQ is active low, but many gpio lines can't support that
- * so this driver uses falling-edge triggers instead.
- */
- if (client->irq > 0) {
- status = request_irq(client->irq, tps65010_irq,
- IRQF_SAMPLE_RANDOM | IRQF_TRIGGER_FALLING,
- DRIVER_NAME, tps);
- if (status < 0) {
- dev_dbg(&client->dev, "can't get IRQ %d, err %d\n",
- client->irq, status);
- goto fail1;
- }
- /* annoying race here, ideally we'd have an option
- * to claim the irq now and enable it later.
- * FIXME genirq IRQF_NOAUTOEN now solves that ...
- */
- disable_irq(client->irq);
- set_bit(FLAG_IRQ_ENABLE, &tps->flags);
- } else
- dev_warn(&client->dev, "IRQ not configured!\n");
-
-
- switch (tps->model) {
- case TPS65010:
- case TPS65012:
- tps->por = 1;
- break;
- /* else CHGCONFIG.POR is replaced by AUA, enabling a WAIT mode */
- }
- tps->chgconf = i2c_smbus_read_byte_data(client, TPS_CHGCONFIG);
- show_chgconfig(tps->por, "conf/init", tps->chgconf);
-
- show_chgstatus("chg/init",
- i2c_smbus_read_byte_data(client, TPS_CHGSTATUS));
- show_regstatus("reg/init",
- i2c_smbus_read_byte_data(client, TPS_REGSTATUS));
-
- pr_debug("%s: vdcdc1 0x%02x, vdcdc2 %02x, vregs1 %02x\n", DRIVER_NAME,
- i2c_smbus_read_byte_data(client, TPS_VDCDC1),
- i2c_smbus_read_byte_data(client, TPS_VDCDC2),
- i2c_smbus_read_byte_data(client, TPS_VREGS1));
- pr_debug("%s: defgpio 0x%02x, mask3 0x%02x\n", DRIVER_NAME,
- i2c_smbus_read_byte_data(client, TPS_DEFGPIO),
- i2c_smbus_read_byte_data(client, TPS_MASK3));
-
- i2c_set_clientdata(client, tps);
- the_tps = tps;
-
-#if defined(CONFIG_USB_GADGET) && !defined(CONFIG_USB_OTG)
- /* USB hosts can't draw VBUS. OTG devices could, later
- * when OTG infrastructure enables it. USB peripherals
- * could be relying on VBUS while booting, though.
- */
- tps->vbus = 100;
-#endif
-
- /* unmask the "interesting" irqs, then poll once to
- * kickstart monitoring, initialize shadowed status
- * registers, and maybe disable VBUS draw.
- */
- tps->nmask1 = ~0;
- (void) i2c_smbus_write_byte_data(client, TPS_MASK1, ~tps->nmask1);
-
- tps->nmask2 = TPS_REG_ONOFF;
- if (tps->model == TPS65013)
- tps->nmask2 |= TPS_REG_NO_CHG;
- (void) i2c_smbus_write_byte_data(client, TPS_MASK2, ~tps->nmask2);
-
- (void) i2c_smbus_write_byte_data(client, TPS_MASK3, 0x0f
- | i2c_smbus_read_byte_data(client, TPS_MASK3));
-
- tps65010_work(&tps->work.work);
-
- tps->file = debugfs_create_file(DRIVER_NAME, S_IRUGO, NULL,
- tps, DEBUG_FOPS);
-
- /* optionally register GPIOs */
- if (board && board->base > 0) {
- tps->outmask = board->outmask;
-
- tps->chip.label = client->name;
- tps->chip.dev = &client->dev;
- tps->chip.owner = THIS_MODULE;
-
- tps->chip.set = tps65010_gpio_set;
- tps->chip.direction_output = tps65010_output;
-
- /* NOTE: only partial support for inputs; nyet IRQs */
- tps->chip.get = tps65010_gpio_get;
-
- tps->chip.base = board->base;
- tps->chip.ngpio = 7;
- tps->chip.can_sleep = 1;
-
- status = gpiochip_add(&tps->chip);
- if (status < 0)
- dev_err(&client->dev, "can't add gpiochip, err %d\n",
- status);
- else if (board->setup) {
- status = board->setup(client, board->context);
- if (status < 0) {
- dev_dbg(&client->dev,
- "board %s %s err %d\n",
- "setup", client->name, status);
- status = 0;
- }
- }
- }
-
- return 0;
-fail1:
- kfree(tps);
- return status;
-}
-
-static const struct i2c_device_id tps65010_id[] = {
- { "tps65010", TPS65010 },
- { "tps65011", TPS65011 },
- { "tps65012", TPS65012 },
- { "tps65013", TPS65013 },
- { "tps65014", TPS65011 }, /* tps65011 charging at 6.5V max */
- { }
-};
-MODULE_DEVICE_TABLE(i2c, tps65010_id);
-
-static struct i2c_driver tps65010_driver = {
- .driver = {
- .name = "tps65010",
- },
- .probe = tps65010_probe,
- .remove = __exit_p(tps65010_remove),
- .id_table = tps65010_id,
-};
-
-/*-------------------------------------------------------------------------*/
-
-/* Draw from VBUS:
- * 0 mA -- DON'T DRAW (might supply power instead)
- * 100 mA -- usb unit load (slowest charge rate)
- * 500 mA -- usb high power (fast battery charge)
- */
-int tps65010_set_vbus_draw(unsigned mA)
-{
- unsigned long flags;
-
- if (!the_tps)
- return -ENODEV;
-
- /* assumes non-SMP */
- local_irq_save(flags);
- if (mA >= 500)
- mA = 500;
- else if (mA >= 100)
- mA = 100;
- else
- mA = 0;
- the_tps->vbus = mA;
- if ((the_tps->chgstatus & TPS_CHG_USB)
- && test_and_set_bit(
- FLAG_VBUS_CHANGED, &the_tps->flags)) {
- /* gadget drivers call this in_irq() */
- (void) schedule_work(&the_tps->work.work);
- }
- local_irq_restore(flags);
-
- return 0;
-}
-EXPORT_SYMBOL(tps65010_set_vbus_draw);
-
-/*-------------------------------------------------------------------------*/
-/* tps65010_set_gpio_out_value parameter:
- * gpio: GPIO1, GPIO2, GPIO3 or GPIO4
- * value: LOW or HIGH
- */
-int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
-{
- int status;
- unsigned defgpio;
-
- if (!the_tps)
- return -ENODEV;
- if ((gpio < GPIO1) || (gpio > GPIO4))
- return -EINVAL;
-
- mutex_lock(&the_tps->lock);
-
- defgpio = i2c_smbus_read_byte_data(the_tps->client, TPS_DEFGPIO);
-
- /* Configure GPIO for output */
- defgpio |= 1 << (gpio + 3);
-
- /* Writing 1 forces a logic 0 on that GPIO and vice versa */
- switch (value) {
- case LOW:
- defgpio |= 1 << (gpio - 1); /* set GPIO low by writing 1 */
- break;
- /* case HIGH: */
- default:
- defgpio &= ~(1 << (gpio - 1)); /* set GPIO high by writing 0 */
- break;
- }
-
- status = i2c_smbus_write_byte_data(the_tps->client,
- TPS_DEFGPIO, defgpio);
-
- pr_debug("%s: gpio%dout = %s, defgpio 0x%02x\n", DRIVER_NAME,
- gpio, value ? "high" : "low",
- i2c_smbus_read_byte_data(the_tps->client, TPS_DEFGPIO));
-
- mutex_unlock(&the_tps->lock);
- return status;
-}
-EXPORT_SYMBOL(tps65010_set_gpio_out_value);
-
-/*-------------------------------------------------------------------------*/
-/* tps65010_set_led parameter:
- * led: LED1 or LED2
- * mode: ON, OFF or BLINK
- */
-int tps65010_set_led(unsigned led, unsigned mode)
-{
- int status;
- unsigned led_on, led_per, offs;
-
- if (!the_tps)
- return -ENODEV;
-
- if (led == LED1)
- offs = 0;
- else {
- offs = 2;
- led = LED2;
- }
-
- mutex_lock(&the_tps->lock);
-
- pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led,
- i2c_smbus_read_byte_data(the_tps->client,
- TPS_LED1_ON + offs));
-
- pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led,
- i2c_smbus_read_byte_data(the_tps->client,
- TPS_LED1_PER + offs));
-
- switch (mode) {
- case OFF:
- led_on = 1 << 7;
- led_per = 0 << 7;
- break;
- case ON:
- led_on = 1 << 7;
- led_per = 1 << 7;
- break;
- case BLINK:
- led_on = 0x30 | (0 << 7);
- led_per = 0x08 | (1 << 7);
- break;
- default:
- printk(KERN_ERR "%s: Wrong mode parameter for set_led()\n",
- DRIVER_NAME);
- mutex_unlock(&the_tps->lock);
- return -EINVAL;
- }
-
- status = i2c_smbus_write_byte_data(the_tps->client,
- TPS_LED1_ON + offs, led_on);
-
- if (status != 0) {
- printk(KERN_ERR "%s: Failed to write led%i_on register\n",
- DRIVER_NAME, led);
- mutex_unlock(&the_tps->lock);
- return status;
- }
-
- pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led,
- i2c_smbus_read_byte_data(the_tps->client, TPS_LED1_ON + offs));
-
- status = i2c_smbus_write_byte_data(the_tps->client,
- TPS_LED1_PER + offs, led_per);
-
- if (status != 0) {
- printk(KERN_ERR "%s: Failed to write led%i_per register\n",
- DRIVER_NAME, led);
- mutex_unlock(&the_tps->lock);
- return status;
- }
-
- pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led,
- i2c_smbus_read_byte_data(the_tps->client,
- TPS_LED1_PER + offs));
-
- mutex_unlock(&the_tps->lock);
-
- return status;
-}
-EXPORT_SYMBOL(tps65010_set_led);
-
-/*-------------------------------------------------------------------------*/
-/* tps65010_set_vib parameter:
- * value: ON or OFF
- */
-int tps65010_set_vib(unsigned value)
-{
- int status;
- unsigned vdcdc2;
-
- if (!the_tps)
- return -ENODEV;
-
- mutex_lock(&the_tps->lock);
-
- vdcdc2 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC2);
- vdcdc2 &= ~(1 << 1);
- if (value)
- vdcdc2 |= (1 << 1);
- status = i2c_smbus_write_byte_data(the_tps->client,
- TPS_VDCDC2, vdcdc2);
-
- pr_debug("%s: vibrator %s\n", DRIVER_NAME, value ? "on" : "off");
-
- mutex_unlock(&the_tps->lock);
- return status;
-}
-EXPORT_SYMBOL(tps65010_set_vib);
-
-/*-------------------------------------------------------------------------*/
-/* tps65010_set_low_pwr parameter:
- * mode: ON or OFF
- */
-int tps65010_set_low_pwr(unsigned mode)
-{
- int status;
- unsigned vdcdc1;
-
- if (!the_tps)
- return -ENODEV;
-
- mutex_lock(&the_tps->lock);
-
- pr_debug("%s: %s low_pwr, vdcdc1 0x%02x\n", DRIVER_NAME,
- mode ? "enable" : "disable",
- i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
-
- vdcdc1 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1);
-
- switch (mode) {
- case OFF:
- vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */
- break;
- /* case ON: */
- default:
- vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */
- break;
- }
-
- status = i2c_smbus_write_byte_data(the_tps->client,
- TPS_VDCDC1, vdcdc1);
-
- if (status != 0)
- printk(KERN_ERR "%s: Failed to write vdcdc1 register\n",
- DRIVER_NAME);
- else
- pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME,
- i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
-
- mutex_unlock(&the_tps->lock);
-
- return status;
-}
-EXPORT_SYMBOL(tps65010_set_low_pwr);
-
-/*-------------------------------------------------------------------------*/
-/* tps65010_config_vregs1 parameter:
- * value to be written to VREGS1 register
- * Note: The complete register is written, set all bits you need
- */
-int tps65010_config_vregs1(unsigned value)
-{
- int status;
-
- if (!the_tps)
- return -ENODEV;
-
- mutex_lock(&the_tps->lock);
-
- pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,
- i2c_smbus_read_byte_data(the_tps->client, TPS_VREGS1));
-
- status = i2c_smbus_write_byte_data(the_tps->client,
- TPS_VREGS1, value);
-
- if (status != 0)
- printk(KERN_ERR "%s: Failed to write vregs1 register\n",
- DRIVER_NAME);
- else
- pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,
- i2c_smbus_read_byte_data(the_tps->client, TPS_VREGS1));
-
- mutex_unlock(&the_tps->lock);
-
- return status;
-}
-EXPORT_SYMBOL(tps65010_config_vregs1);
-
-/*-------------------------------------------------------------------------*/
-/* tps65013_set_low_pwr parameter:
- * mode: ON or OFF
- */
-
-/* FIXME: Assumes AC or USB power is present. Setting AUA bit is not
- required if power supply is through a battery */
-
-int tps65013_set_low_pwr(unsigned mode)
-{
- int status;
- unsigned vdcdc1, chgconfig;
-
- if (!the_tps || the_tps->por)
- return -ENODEV;
-
- mutex_lock(&the_tps->lock);
-
- pr_debug("%s: %s low_pwr, chgconfig 0x%02x vdcdc1 0x%02x\n",
- DRIVER_NAME,
- mode ? "enable" : "disable",
- i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG),
- i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
-
- chgconfig = i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG);
- vdcdc1 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1);
-
- switch (mode) {
- case OFF:
- chgconfig &= ~TPS65013_AUA; /* disable AUA bit */
- vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */
- break;
- /* case ON: */
- default:
- chgconfig |= TPS65013_AUA; /* enable AUA bit */
- vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */
- break;
- }
-
- status = i2c_smbus_write_byte_data(the_tps->client,
- TPS_CHGCONFIG, chgconfig);
- if (status != 0) {
- printk(KERN_ERR "%s: Failed to write chconfig register\n",
- DRIVER_NAME);
- mutex_unlock(&the_tps->lock);
- return status;
- }
-
- chgconfig = i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG);
- the_tps->chgconf = chgconfig;
- show_chgconfig(0, "chgconf", chgconfig);
-
- status = i2c_smbus_write_byte_data(the_tps->client,
- TPS_VDCDC1, vdcdc1);
-
- if (status != 0)
- printk(KERN_ERR "%s: Failed to write vdcdc1 register\n",
- DRIVER_NAME);
- else
- pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME,
- i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
-
- mutex_unlock(&the_tps->lock);
-
- return status;
-}
-EXPORT_SYMBOL(tps65013_set_low_pwr);
-
-/*-------------------------------------------------------------------------*/
-
-static int __init tps_init(void)
-{
- u32 tries = 3;
- int status = -ENODEV;
-
- printk(KERN_INFO "%s: version %s\n", DRIVER_NAME, DRIVER_VERSION);
-
- /* some boards have startup glitches */
- while (tries--) {
- status = i2c_add_driver(&tps65010_driver);
- if (the_tps)
- break;
- i2c_del_driver(&tps65010_driver);
- if (!tries) {
- printk(KERN_ERR "%s: no chip?\n", DRIVER_NAME);
- return -ENODEV;
- }
- pr_debug("%s: re-probe ...\n", DRIVER_NAME);
- msleep(10);
- }
-
- return status;
-}
-/* NOTE: this MUST be initialized before the other parts of the system
- * that rely on it ... but after the i2c bus on which this relies.
- * That is, much earlier than on PC-type systems, which don't often use
- * I2C as a core system bus.
- */
-subsys_initcall(tps_init);
-
-static void __exit tps_exit(void)
-{
- i2c_del_driver(&tps65010_driver);
-}
-module_exit(tps_exit);
-
To compile this driver as a module, choose M here: the
module will be called ucb1400_core.
+config TPS65010
+ tristate "TPS6501x Power Management chips"
+ depends on I2C && GPIOLIB
+ default y if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_OSK
+ help
+ If you say yes here you get support for the TPS6501x series of
+ Power Management chips. These include voltage regulators,
+ lithium ion/polymer battery charging, and other features that
+ are often used in portable devices like cell phones and cameras.
+
+ This driver can also be built as a module. If so, the module
+ will be called tps65010.
+
config TWL4030_CORE
bool "Texas Instruments TWL4030/TPS659x0 Support"
depends on I2C=y && GENERIC_HARDIRQS
obj-$(CONFIG_MFD_WM8350) += wm8350.o
obj-$(CONFIG_MFD_WM8350_I2C) += wm8350-i2c.o
+obj-$(CONFIG_TPS65010) += tps65010.o
+
obj-$(CONFIG_TWL4030_CORE) += twl4030-core.o twl4030-irq.o
obj-$(CONFIG_MFD_CORE) += mfd-core.o
endif
obj-$(CONFIG_UCB1400_CORE) += ucb1400_core.o
-obj-$(CONFIG_PMIC_DA903X) += da903x.o
\ No newline at end of file
+obj-$(CONFIG_PMIC_DA903X) += da903x.o
--- /dev/null
+/*
+ * tps65010 - driver for tps6501x power management chips
+ *
+ * Copyright (C) 2004 Texas Instruments
+ * Copyright (C) 2004-2005 David Brownell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/workqueue.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+
+#include <linux/i2c/tps65010.h>
+
+#include <asm/gpio.h>
+
+
+/*-------------------------------------------------------------------------*/
+
+#define DRIVER_VERSION "2 May 2005"
+#define DRIVER_NAME (tps65010_driver.driver.name)
+
+MODULE_DESCRIPTION("TPS6501x Power Management Driver");
+MODULE_LICENSE("GPL");
+
+static struct i2c_driver tps65010_driver;
+
+/*-------------------------------------------------------------------------*/
+
+/* This driver handles a family of multipurpose chips, which incorporate
+ * voltage regulators, lithium ion/polymer battery charging, GPIOs, LEDs,
+ * and other features often needed in portable devices like cell phones
+ * or digital cameras.
+ *
+ * The tps65011 and tps65013 have different voltage settings compared
+ * to tps65010 and tps65012. The tps65013 has a NO_CHG status/irq.
+ * All except tps65010 have "wait" mode, possibly defaulted so that
+ * battery-insert != device-on.
+ *
+ * We could distinguish between some models by checking VDCDC1.UVLO or
+ * other registers, unless they've been changed already after powerup
+ * as part of board setup by a bootloader.
+ */
+enum tps_model {
+ TPS65010,
+ TPS65011,
+ TPS65012,
+ TPS65013,
+};
+
+struct tps65010 {
+ struct i2c_client *client;
+ struct mutex lock;
+ struct delayed_work work;
+ struct dentry *file;
+ unsigned charging:1;
+ unsigned por:1;
+ unsigned model:8;
+ u16 vbus;
+ unsigned long flags;
+#define FLAG_VBUS_CHANGED 0
+#define FLAG_IRQ_ENABLE 1
+
+ /* copies of last register state */
+ u8 chgstatus, regstatus, chgconf;
+ u8 nmask1, nmask2;
+
+ u8 outmask;
+ struct gpio_chip chip;
+ struct platform_device *leds;
+};
+
+#define POWER_POLL_DELAY msecs_to_jiffies(5000)
+
+/*-------------------------------------------------------------------------*/
+
+#if defined(DEBUG) || defined(CONFIG_DEBUG_FS)
+
+static void dbg_chgstat(char *buf, size_t len, u8 chgstatus)
+{
+ snprintf(buf, len, "%02x%s%s%s%s%s%s%s%s\n",
+ chgstatus,
+ (chgstatus & TPS_CHG_USB) ? " USB" : "",
+ (chgstatus & TPS_CHG_AC) ? " AC" : "",
+ (chgstatus & TPS_CHG_THERM) ? " therm" : "",
+ (chgstatus & TPS_CHG_TERM) ? " done" :
+ ((chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
+ ? " (charging)" : ""),
+ (chgstatus & TPS_CHG_TAPER_TMO) ? " taper_tmo" : "",
+ (chgstatus & TPS_CHG_CHG_TMO) ? " charge_tmo" : "",
+ (chgstatus & TPS_CHG_PRECHG_TMO) ? " prechg_tmo" : "",
+ (chgstatus & TPS_CHG_TEMP_ERR) ? " temp_err" : "");
+}
+
+static void dbg_regstat(char *buf, size_t len, u8 regstatus)
+{
+ snprintf(buf, len, "%02x %s%s%s%s%s%s%s%s\n",
+ regstatus,
+ (regstatus & TPS_REG_ONOFF) ? "off" : "(on)",
+ (regstatus & TPS_REG_COVER) ? " uncover" : "",
+ (regstatus & TPS_REG_UVLO) ? " UVLO" : "",
+ (regstatus & TPS_REG_NO_CHG) ? " NO_CHG" : "",
+ (regstatus & TPS_REG_PG_LD02) ? " ld02_bad" : "",
+ (regstatus & TPS_REG_PG_LD01) ? " ld01_bad" : "",
+ (regstatus & TPS_REG_PG_MAIN) ? " main_bad" : "",
+ (regstatus & TPS_REG_PG_CORE) ? " core_bad" : "");
+}
+
+static void dbg_chgconf(int por, char *buf, size_t len, u8 chgconfig)
+{
+ const char *hibit;
+
+ if (por)
+ hibit = (chgconfig & TPS_CHARGE_POR)
+ ? "POR=69ms" : "POR=1sec";
+ else
+ hibit = (chgconfig & TPS65013_AUA) ? "AUA" : "";
+
+ snprintf(buf, len, "%02x %s%s%s AC=%d%% USB=%dmA %sCharge\n",
+ chgconfig, hibit,
+ (chgconfig & TPS_CHARGE_RESET) ? " reset" : "",
+ (chgconfig & TPS_CHARGE_FAST) ? " fast" : "",
+ ({int p; switch ((chgconfig >> 3) & 3) {
+ case 3: p = 100; break;
+ case 2: p = 75; break;
+ case 1: p = 50; break;
+ default: p = 25; break;
+ }; p; }),
+ (chgconfig & TPS_VBUS_CHARGING)
+ ? ((chgconfig & TPS_VBUS_500MA) ? 500 : 100)
+ : 0,
+ (chgconfig & TPS_CHARGE_ENABLE) ? "" : "No");
+}
+
+#endif
+
+#ifdef DEBUG
+
+static void show_chgstatus(const char *label, u8 chgstatus)
+{
+ char buf [100];
+
+ dbg_chgstat(buf, sizeof buf, chgstatus);
+ pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
+}
+
+static void show_regstatus(const char *label, u8 regstatus)
+{
+ char buf [100];
+
+ dbg_regstat(buf, sizeof buf, regstatus);
+ pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
+}
+
+static void show_chgconfig(int por, const char *label, u8 chgconfig)
+{
+ char buf [100];
+
+ dbg_chgconf(por, buf, sizeof buf, chgconfig);
+ pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
+}
+
+#else
+
+static inline void show_chgstatus(const char *label, u8 chgstatus) { }
+static inline void show_regstatus(const char *label, u8 chgstatus) { }
+static inline void show_chgconfig(int por, const char *label, u8 chgconfig) { }
+
+#endif
+
+#ifdef CONFIG_DEBUG_FS
+
+static int dbg_show(struct seq_file *s, void *_)
+{
+ struct tps65010 *tps = s->private;
+ u8 value, v2;
+ unsigned i;
+ char buf[100];
+ const char *chip;
+
+ switch (tps->model) {
+ case TPS65010: chip = "tps65010"; break;
+ case TPS65011: chip = "tps65011"; break;
+ case TPS65012: chip = "tps65012"; break;
+ case TPS65013: chip = "tps65013"; break;
+ default: chip = NULL; break;
+ }
+ seq_printf(s, "driver %s\nversion %s\nchip %s\n\n",
+ DRIVER_NAME, DRIVER_VERSION, chip);
+
+ mutex_lock(&tps->lock);
+
+ /* FIXME how can we tell whether a battery is present?
+ * likely involves a charge gauging chip (like BQ26501).
+ */
+
+ seq_printf(s, "%scharging\n\n", tps->charging ? "" : "(not) ");
+
+
+ /* registers for monitoring battery charging and status; note
+ * that reading chgstat and regstat may ack IRQs...
+ */
+ value = i2c_smbus_read_byte_data(tps->client, TPS_CHGCONFIG);
+ dbg_chgconf(tps->por, buf, sizeof buf, value);
+ seq_printf(s, "chgconfig %s", buf);
+
+ value = i2c_smbus_read_byte_data(tps->client, TPS_CHGSTATUS);
+ dbg_chgstat(buf, sizeof buf, value);
+ seq_printf(s, "chgstat %s", buf);
+ value = i2c_smbus_read_byte_data(tps->client, TPS_MASK1);
+ dbg_chgstat(buf, sizeof buf, value);
+ seq_printf(s, "mask1 %s", buf);
+ /* ignore ackint1 */
+
+ value = i2c_smbus_read_byte_data(tps->client, TPS_REGSTATUS);
+ dbg_regstat(buf, sizeof buf, value);
+ seq_printf(s, "regstat %s", buf);
+ value = i2c_smbus_read_byte_data(tps->client, TPS_MASK2);
+ dbg_regstat(buf, sizeof buf, value);
+ seq_printf(s, "mask2 %s\n", buf);
+ /* ignore ackint2 */
+
+ (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY);
+
+
+ /* VMAIN voltage, enable lowpower, etc */
+ value = i2c_smbus_read_byte_data(tps->client, TPS_VDCDC1);
+ seq_printf(s, "vdcdc1 %02x\n", value);
+
+ /* VCORE voltage, vibrator on/off */
+ value = i2c_smbus_read_byte_data(tps->client, TPS_VDCDC2);
+ seq_printf(s, "vdcdc2 %02x\n", value);
+
+ /* both LD0s, and their lowpower behavior */
+ value = i2c_smbus_read_byte_data(tps->client, TPS_VREGS1);
+ seq_printf(s, "vregs1 %02x\n\n", value);
+
+
+ /* LEDs and GPIOs */
+ value = i2c_smbus_read_byte_data(tps->client, TPS_LED1_ON);
+ v2 = i2c_smbus_read_byte_data(tps->client, TPS_LED1_PER);
+ seq_printf(s, "led1 %s, on=%02x, per=%02x, %d/%d msec\n",
+ (value & 0x80)
+ ? ((v2 & 0x80) ? "on" : "off")
+ : ((v2 & 0x80) ? "blink" : "(nPG)"),
+ value, v2,
+ (value & 0x7f) * 10, (v2 & 0x7f) * 100);
+
+ value = i2c_smbus_read_byte_data(tps->client, TPS_LED2_ON);
+ v2 = i2c_smbus_read_byte_data(tps->client, TPS_LED2_PER);
+ seq_printf(s, "led2 %s, on=%02x, per=%02x, %d/%d msec\n",
+ (value & 0x80)
+ ? ((v2 & 0x80) ? "on" : "off")
+ : ((v2 & 0x80) ? "blink" : "off"),
+ value, v2,
+ (value & 0x7f) * 10, (v2 & 0x7f) * 100);
+
+ value = i2c_smbus_read_byte_data(tps->client, TPS_DEFGPIO);
+ v2 = i2c_smbus_read_byte_data(tps->client, TPS_MASK3);
+ seq_printf(s, "defgpio %02x mask3 %02x\n", value, v2);
+
+ for (i = 0; i < 4; i++) {
+ if (value & (1 << (4 + i)))
+ seq_printf(s, " gpio%d-out %s\n", i + 1,
+ (value & (1 << i)) ? "low" : "hi ");
+ else
+ seq_printf(s, " gpio%d-in %s %s %s\n", i + 1,
+ (value & (1 << i)) ? "hi " : "low",
+ (v2 & (1 << i)) ? "no-irq" : "irq",
+ (v2 & (1 << (4 + i))) ? "rising" : "falling");
+ }
+
+ mutex_unlock(&tps->lock);
+ return 0;
+}
+
+static int dbg_tps_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, dbg_show, inode->i_private);
+}
+
+static const struct file_operations debug_fops = {
+ .open = dbg_tps_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+#define DEBUG_FOPS &debug_fops
+
+#else
+#define DEBUG_FOPS NULL
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+/* handle IRQS in a task context, so we can use I2C calls */
+static void tps65010_interrupt(struct tps65010 *tps)
+{
+ u8 tmp = 0, mask, poll;
+
+ /* IRQs won't trigger for certain events, but we can get
+ * others by polling (normally, with external power applied).
+ */
+ poll = 0;
+
+ /* regstatus irqs */
+ if (tps->nmask2) {
+ tmp = i2c_smbus_read_byte_data(tps->client, TPS_REGSTATUS);
+ mask = tmp ^ tps->regstatus;
+ tps->regstatus = tmp;
+ mask &= tps->nmask2;
+ } else
+ mask = 0;
+ if (mask) {
+ tps->regstatus = tmp;
+ /* may need to shut something down ... */
+
+ /* "off" usually means deep sleep */
+ if (tmp & TPS_REG_ONOFF) {
+ pr_info("%s: power off button\n", DRIVER_NAME);
+#if 0
+ /* REVISIT: this might need its own workqueue
+ * plus tweaks including deadlock avoidance ...
+ * also needs to get error handling and probably
+ * an #ifdef CONFIG_HIBERNATION
+ */
+ hibernate();
+#endif
+ poll = 1;
+ }
+ }
+
+ /* chgstatus irqs */
+ if (tps->nmask1) {
+ tmp = i2c_smbus_read_byte_data(tps->client, TPS_CHGSTATUS);
+ mask = tmp ^ tps->chgstatus;
+ tps->chgstatus = tmp;
+ mask &= tps->nmask1;
+ } else
+ mask = 0;
+ if (mask) {
+ unsigned charging = 0;
+
+ show_chgstatus("chg/irq", tmp);
+ if (tmp & (TPS_CHG_USB|TPS_CHG_AC))
+ show_chgconfig(tps->por, "conf", tps->chgconf);
+
+ /* Unless it was turned off or disabled, we charge any
+ * battery whenever there's power available for it
+ * and the charger hasn't been disabled.
+ */
+ if (!(tps->chgstatus & ~(TPS_CHG_USB|TPS_CHG_AC))
+ && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
+ && (tps->chgconf & TPS_CHARGE_ENABLE)
+ ) {
+ if (tps->chgstatus & TPS_CHG_USB) {
+ /* VBUS options are readonly until reconnect */
+ if (mask & TPS_CHG_USB)
+ set_bit(FLAG_VBUS_CHANGED, &tps->flags);
+ charging = 1;
+ } else if (tps->chgstatus & TPS_CHG_AC)
+ charging = 1;
+ }
+ if (charging != tps->charging) {
+ tps->charging = charging;
+ pr_info("%s: battery %scharging\n",
+ DRIVER_NAME, charging ? "" :
+ ((tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
+ ? "NOT " : "dis"));
+ }
+ }
+
+ /* always poll to detect (a) power removal, without tps65013
+ * NO_CHG IRQ; or (b) restart of charging after stop.
+ */
+ if ((tps->model != TPS65013 || !tps->charging)
+ && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)))
+ poll = 1;
+ if (poll)
+ (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY);
+
+ /* also potentially gpio-in rise or fall */
+}
+
+/* handle IRQs and polling using keventd for now */
+static void tps65010_work(struct work_struct *work)
+{
+ struct tps65010 *tps;
+
+ tps = container_of(work, struct tps65010, work.work);
+ mutex_lock(&tps->lock);
+
+ tps65010_interrupt(tps);
+
+ if (test_and_clear_bit(FLAG_VBUS_CHANGED, &tps->flags)) {
+ int status;
+ u8 chgconfig, tmp;
+
+ chgconfig = i2c_smbus_read_byte_data(tps->client,
+ TPS_CHGCONFIG);
+ chgconfig &= ~(TPS_VBUS_500MA | TPS_VBUS_CHARGING);
+ if (tps->vbus == 500)
+ chgconfig |= TPS_VBUS_500MA | TPS_VBUS_CHARGING;
+ else if (tps->vbus >= 100)
+ chgconfig |= TPS_VBUS_CHARGING;
+
+ status = i2c_smbus_write_byte_data(tps->client,
+ TPS_CHGCONFIG, chgconfig);
+
+ /* vbus update fails unless VBUS is connected! */
+ tmp = i2c_smbus_read_byte_data(tps->client, TPS_CHGCONFIG);
+ tps->chgconf = tmp;
+ show_chgconfig(tps->por, "update vbus", tmp);
+ }
+
+ if (test_and_clear_bit(FLAG_IRQ_ENABLE, &tps->flags))
+ enable_irq(tps->client->irq);
+
+ mutex_unlock(&tps->lock);
+}
+
+static irqreturn_t tps65010_irq(int irq, void *_tps)
+{
+ struct tps65010 *tps = _tps;
+
+ disable_irq_nosync(irq);
+ set_bit(FLAG_IRQ_ENABLE, &tps->flags);
+ (void) schedule_work(&tps->work.work);
+ return IRQ_HANDLED;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* offsets 0..3 == GPIO1..GPIO4
+ * offsets 4..5 == LED1/nPG, LED2 (we set one of the non-BLINK modes)
+ * offset 6 == vibrator motor driver
+ */
+static void
+tps65010_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ if (offset < 4)
+ tps65010_set_gpio_out_value(offset + 1, value);
+ else if (offset < 6)
+ tps65010_set_led(offset - 3, value ? ON : OFF);
+ else
+ tps65010_set_vib(value);
+}
+
+static int
+tps65010_output(struct gpio_chip *chip, unsigned offset, int value)
+{
+ /* GPIOs may be input-only */
+ if (offset < 4) {
+ struct tps65010 *tps;
+
+ tps = container_of(chip, struct tps65010, chip);
+ if (!(tps->outmask & (1 << offset)))
+ return -EINVAL;
+ tps65010_set_gpio_out_value(offset + 1, value);
+ } else if (offset < 6)
+ tps65010_set_led(offset - 3, value ? ON : OFF);
+ else
+ tps65010_set_vib(value);
+
+ return 0;
+}
+
+static int tps65010_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ int value;
+ struct tps65010 *tps;
+
+ tps = container_of(chip, struct tps65010, chip);
+
+ if (offset < 4) {
+ value = i2c_smbus_read_byte_data(tps->client, TPS_DEFGPIO);
+ if (value < 0)
+ return 0;
+ if (value & (1 << (offset + 4))) /* output */
+ return !(value & (1 << offset));
+ else /* input */
+ return (value & (1 << offset));
+ }
+
+ /* REVISIT we *could* report LED1/nPG and LED2 state ... */
+ return 0;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static struct tps65010 *the_tps;
+
+static int __exit tps65010_remove(struct i2c_client *client)
+{
+ struct tps65010 *tps = i2c_get_clientdata(client);
+ struct tps65010_board *board = client->dev.platform_data;
+
+ if (board && board->teardown) {
+ int status = board->teardown(client, board->context);
+ if (status < 0)
+ dev_dbg(&client->dev, "board %s %s err %d\n",
+ "teardown", client->name, status);
+ }
+ if (client->irq > 0)
+ free_irq(client->irq, tps);
+ cancel_delayed_work(&tps->work);
+ flush_scheduled_work();
+ debugfs_remove(tps->file);
+ kfree(tps);
+ i2c_set_clientdata(client, NULL);
+ the_tps = NULL;
+ return 0;
+}
+
+static int tps65010_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct tps65010 *tps;
+ int status;
+ struct tps65010_board *board = client->dev.platform_data;
+
+ if (the_tps) {
+ dev_dbg(&client->dev, "only one tps6501x chip allowed\n");
+ return -ENODEV;
+ }
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -EINVAL;
+
+ tps = kzalloc(sizeof *tps, GFP_KERNEL);
+ if (!tps)
+ return -ENOMEM;
+
+ mutex_init(&tps->lock);
+ INIT_DELAYED_WORK(&tps->work, tps65010_work);
+ tps->client = client;
+ tps->model = id->driver_data;
+
+ /* the IRQ is active low, but many gpio lines can't support that
+ * so this driver uses falling-edge triggers instead.
+ */
+ if (client->irq > 0) {
+ status = request_irq(client->irq, tps65010_irq,
+ IRQF_SAMPLE_RANDOM | IRQF_TRIGGER_FALLING,
+ DRIVER_NAME, tps);
+ if (status < 0) {
+ dev_dbg(&client->dev, "can't get IRQ %d, err %d\n",
+ client->irq, status);
+ goto fail1;
+ }
+ /* annoying race here, ideally we'd have an option
+ * to claim the irq now and enable it later.
+ * FIXME genirq IRQF_NOAUTOEN now solves that ...
+ */
+ disable_irq(client->irq);
+ set_bit(FLAG_IRQ_ENABLE, &tps->flags);
+ } else
+ dev_warn(&client->dev, "IRQ not configured!\n");
+
+
+ switch (tps->model) {
+ case TPS65010:
+ case TPS65012:
+ tps->por = 1;
+ break;
+ /* else CHGCONFIG.POR is replaced by AUA, enabling a WAIT mode */
+ }
+ tps->chgconf = i2c_smbus_read_byte_data(client, TPS_CHGCONFIG);
+ show_chgconfig(tps->por, "conf/init", tps->chgconf);
+
+ show_chgstatus("chg/init",
+ i2c_smbus_read_byte_data(client, TPS_CHGSTATUS));
+ show_regstatus("reg/init",
+ i2c_smbus_read_byte_data(client, TPS_REGSTATUS));
+
+ pr_debug("%s: vdcdc1 0x%02x, vdcdc2 %02x, vregs1 %02x\n", DRIVER_NAME,
+ i2c_smbus_read_byte_data(client, TPS_VDCDC1),
+ i2c_smbus_read_byte_data(client, TPS_VDCDC2),
+ i2c_smbus_read_byte_data(client, TPS_VREGS1));
+ pr_debug("%s: defgpio 0x%02x, mask3 0x%02x\n", DRIVER_NAME,
+ i2c_smbus_read_byte_data(client, TPS_DEFGPIO),
+ i2c_smbus_read_byte_data(client, TPS_MASK3));
+
+ i2c_set_clientdata(client, tps);
+ the_tps = tps;
+
+#if defined(CONFIG_USB_GADGET) && !defined(CONFIG_USB_OTG)
+ /* USB hosts can't draw VBUS. OTG devices could, later
+ * when OTG infrastructure enables it. USB peripherals
+ * could be relying on VBUS while booting, though.
+ */
+ tps->vbus = 100;
+#endif
+
+ /* unmask the "interesting" irqs, then poll once to
+ * kickstart monitoring, initialize shadowed status
+ * registers, and maybe disable VBUS draw.
+ */
+ tps->nmask1 = ~0;
+ (void) i2c_smbus_write_byte_data(client, TPS_MASK1, ~tps->nmask1);
+
+ tps->nmask2 = TPS_REG_ONOFF;
+ if (tps->model == TPS65013)
+ tps->nmask2 |= TPS_REG_NO_CHG;
+ (void) i2c_smbus_write_byte_data(client, TPS_MASK2, ~tps->nmask2);
+
+ (void) i2c_smbus_write_byte_data(client, TPS_MASK3, 0x0f
+ | i2c_smbus_read_byte_data(client, TPS_MASK3));
+
+ tps65010_work(&tps->work.work);
+
+ tps->file = debugfs_create_file(DRIVER_NAME, S_IRUGO, NULL,
+ tps, DEBUG_FOPS);
+
+ /* optionally register GPIOs */
+ if (board && board->base > 0) {
+ tps->outmask = board->outmask;
+
+ tps->chip.label = client->name;
+ tps->chip.dev = &client->dev;
+ tps->chip.owner = THIS_MODULE;
+
+ tps->chip.set = tps65010_gpio_set;
+ tps->chip.direction_output = tps65010_output;
+
+ /* NOTE: only partial support for inputs; nyet IRQs */
+ tps->chip.get = tps65010_gpio_get;
+
+ tps->chip.base = board->base;
+ tps->chip.ngpio = 7;
+ tps->chip.can_sleep = 1;
+
+ status = gpiochip_add(&tps->chip);
+ if (status < 0)
+ dev_err(&client->dev, "can't add gpiochip, err %d\n",
+ status);
+ else if (board->setup) {
+ status = board->setup(client, board->context);
+ if (status < 0) {
+ dev_dbg(&client->dev,
+ "board %s %s err %d\n",
+ "setup", client->name, status);
+ status = 0;
+ }
+ }
+ }
+
+ return 0;
+fail1:
+ kfree(tps);
+ return status;
+}
+
+static const struct i2c_device_id tps65010_id[] = {
+ { "tps65010", TPS65010 },
+ { "tps65011", TPS65011 },
+ { "tps65012", TPS65012 },
+ { "tps65013", TPS65013 },
+ { "tps65014", TPS65011 }, /* tps65011 charging at 6.5V max */
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tps65010_id);
+
+static struct i2c_driver tps65010_driver = {
+ .driver = {
+ .name = "tps65010",
+ },
+ .probe = tps65010_probe,
+ .remove = __exit_p(tps65010_remove),
+ .id_table = tps65010_id,
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* Draw from VBUS:
+ * 0 mA -- DON'T DRAW (might supply power instead)
+ * 100 mA -- usb unit load (slowest charge rate)
+ * 500 mA -- usb high power (fast battery charge)
+ */
+int tps65010_set_vbus_draw(unsigned mA)
+{
+ unsigned long flags;
+
+ if (!the_tps)
+ return -ENODEV;
+
+ /* assumes non-SMP */
+ local_irq_save(flags);
+ if (mA >= 500)
+ mA = 500;
+ else if (mA >= 100)
+ mA = 100;
+ else
+ mA = 0;
+ the_tps->vbus = mA;
+ if ((the_tps->chgstatus & TPS_CHG_USB)
+ && test_and_set_bit(
+ FLAG_VBUS_CHANGED, &the_tps->flags)) {
+ /* gadget drivers call this in_irq() */
+ (void) schedule_work(&the_tps->work.work);
+ }
+ local_irq_restore(flags);
+
+ return 0;
+}
+EXPORT_SYMBOL(tps65010_set_vbus_draw);
+
+/*-------------------------------------------------------------------------*/
+/* tps65010_set_gpio_out_value parameter:
+ * gpio: GPIO1, GPIO2, GPIO3 or GPIO4
+ * value: LOW or HIGH
+ */
+int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
+{
+ int status;
+ unsigned defgpio;
+
+ if (!the_tps)
+ return -ENODEV;
+ if ((gpio < GPIO1) || (gpio > GPIO4))
+ return -EINVAL;
+
+ mutex_lock(&the_tps->lock);
+
+ defgpio = i2c_smbus_read_byte_data(the_tps->client, TPS_DEFGPIO);
+
+ /* Configure GPIO for output */
+ defgpio |= 1 << (gpio + 3);
+
+ /* Writing 1 forces a logic 0 on that GPIO and vice versa */
+ switch (value) {
+ case LOW:
+ defgpio |= 1 << (gpio - 1); /* set GPIO low by writing 1 */
+ break;
+ /* case HIGH: */
+ default:
+ defgpio &= ~(1 << (gpio - 1)); /* set GPIO high by writing 0 */
+ break;
+ }
+
+ status = i2c_smbus_write_byte_data(the_tps->client,
+ TPS_DEFGPIO, defgpio);
+
+ pr_debug("%s: gpio%dout = %s, defgpio 0x%02x\n", DRIVER_NAME,
+ gpio, value ? "high" : "low",
+ i2c_smbus_read_byte_data(the_tps->client, TPS_DEFGPIO));
+
+ mutex_unlock(&the_tps->lock);
+ return status;
+}
+EXPORT_SYMBOL(tps65010_set_gpio_out_value);
+
+/*-------------------------------------------------------------------------*/
+/* tps65010_set_led parameter:
+ * led: LED1 or LED2
+ * mode: ON, OFF or BLINK
+ */
+int tps65010_set_led(unsigned led, unsigned mode)
+{
+ int status;
+ unsigned led_on, led_per, offs;
+
+ if (!the_tps)
+ return -ENODEV;
+
+ if (led == LED1)
+ offs = 0;
+ else {
+ offs = 2;
+ led = LED2;
+ }
+
+ mutex_lock(&the_tps->lock);
+
+ pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led,
+ i2c_smbus_read_byte_data(the_tps->client,
+ TPS_LED1_ON + offs));
+
+ pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led,
+ i2c_smbus_read_byte_data(the_tps->client,
+ TPS_LED1_PER + offs));
+
+ switch (mode) {
+ case OFF:
+ led_on = 1 << 7;
+ led_per = 0 << 7;
+ break;
+ case ON:
+ led_on = 1 << 7;
+ led_per = 1 << 7;
+ break;
+ case BLINK:
+ led_on = 0x30 | (0 << 7);
+ led_per = 0x08 | (1 << 7);
+ break;
+ default:
+ printk(KERN_ERR "%s: Wrong mode parameter for set_led()\n",
+ DRIVER_NAME);
+ mutex_unlock(&the_tps->lock);
+ return -EINVAL;
+ }
+
+ status = i2c_smbus_write_byte_data(the_tps->client,
+ TPS_LED1_ON + offs, led_on);
+
+ if (status != 0) {
+ printk(KERN_ERR "%s: Failed to write led%i_on register\n",
+ DRIVER_NAME, led);
+ mutex_unlock(&the_tps->lock);
+ return status;
+ }
+
+ pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led,
+ i2c_smbus_read_byte_data(the_tps->client, TPS_LED1_ON + offs));
+
+ status = i2c_smbus_write_byte_data(the_tps->client,
+ TPS_LED1_PER + offs, led_per);
+
+ if (status != 0) {
+ printk(KERN_ERR "%s: Failed to write led%i_per register\n",
+ DRIVER_NAME, led);
+ mutex_unlock(&the_tps->lock);
+ return status;
+ }
+
+ pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led,
+ i2c_smbus_read_byte_data(the_tps->client,
+ TPS_LED1_PER + offs));
+
+ mutex_unlock(&the_tps->lock);
+
+ return status;
+}
+EXPORT_SYMBOL(tps65010_set_led);
+
+/*-------------------------------------------------------------------------*/
+/* tps65010_set_vib parameter:
+ * value: ON or OFF
+ */
+int tps65010_set_vib(unsigned value)
+{
+ int status;
+ unsigned vdcdc2;
+
+ if (!the_tps)
+ return -ENODEV;
+
+ mutex_lock(&the_tps->lock);
+
+ vdcdc2 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC2);
+ vdcdc2 &= ~(1 << 1);
+ if (value)
+ vdcdc2 |= (1 << 1);
+ status = i2c_smbus_write_byte_data(the_tps->client,
+ TPS_VDCDC2, vdcdc2);
+
+ pr_debug("%s: vibrator %s\n", DRIVER_NAME, value ? "on" : "off");
+
+ mutex_unlock(&the_tps->lock);
+ return status;
+}
+EXPORT_SYMBOL(tps65010_set_vib);
+
+/*-------------------------------------------------------------------------*/
+/* tps65010_set_low_pwr parameter:
+ * mode: ON or OFF
+ */
+int tps65010_set_low_pwr(unsigned mode)
+{
+ int status;
+ unsigned vdcdc1;
+
+ if (!the_tps)
+ return -ENODEV;
+
+ mutex_lock(&the_tps->lock);
+
+ pr_debug("%s: %s low_pwr, vdcdc1 0x%02x\n", DRIVER_NAME,
+ mode ? "enable" : "disable",
+ i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
+
+ vdcdc1 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1);
+
+ switch (mode) {
+ case OFF:
+ vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */
+ break;
+ /* case ON: */
+ default:
+ vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */
+ break;
+ }
+
+ status = i2c_smbus_write_byte_data(the_tps->client,
+ TPS_VDCDC1, vdcdc1);
+
+ if (status != 0)
+ printk(KERN_ERR "%s: Failed to write vdcdc1 register\n",
+ DRIVER_NAME);
+ else
+ pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME,
+ i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
+
+ mutex_unlock(&the_tps->lock);
+
+ return status;
+}
+EXPORT_SYMBOL(tps65010_set_low_pwr);
+
+/*-------------------------------------------------------------------------*/
+/* tps65010_config_vregs1 parameter:
+ * value to be written to VREGS1 register
+ * Note: The complete register is written, set all bits you need
+ */
+int tps65010_config_vregs1(unsigned value)
+{
+ int status;
+
+ if (!the_tps)
+ return -ENODEV;
+
+ mutex_lock(&the_tps->lock);
+
+ pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,
+ i2c_smbus_read_byte_data(the_tps->client, TPS_VREGS1));
+
+ status = i2c_smbus_write_byte_data(the_tps->client,
+ TPS_VREGS1, value);
+
+ if (status != 0)
+ printk(KERN_ERR "%s: Failed to write vregs1 register\n",
+ DRIVER_NAME);
+ else
+ pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,
+ i2c_smbus_read_byte_data(the_tps->client, TPS_VREGS1));
+
+ mutex_unlock(&the_tps->lock);
+
+ return status;
+}
+EXPORT_SYMBOL(tps65010_config_vregs1);
+
+/*-------------------------------------------------------------------------*/
+/* tps65013_set_low_pwr parameter:
+ * mode: ON or OFF
+ */
+
+/* FIXME: Assumes AC or USB power is present. Setting AUA bit is not
+ required if power supply is through a battery */
+
+int tps65013_set_low_pwr(unsigned mode)
+{
+ int status;
+ unsigned vdcdc1, chgconfig;
+
+ if (!the_tps || the_tps->por)
+ return -ENODEV;
+
+ mutex_lock(&the_tps->lock);
+
+ pr_debug("%s: %s low_pwr, chgconfig 0x%02x vdcdc1 0x%02x\n",
+ DRIVER_NAME,
+ mode ? "enable" : "disable",
+ i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG),
+ i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
+
+ chgconfig = i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG);
+ vdcdc1 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1);
+
+ switch (mode) {
+ case OFF:
+ chgconfig &= ~TPS65013_AUA; /* disable AUA bit */
+ vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */
+ break;
+ /* case ON: */
+ default:
+ chgconfig |= TPS65013_AUA; /* enable AUA bit */
+ vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */
+ break;
+ }
+
+ status = i2c_smbus_write_byte_data(the_tps->client,
+ TPS_CHGCONFIG, chgconfig);
+ if (status != 0) {
+ printk(KERN_ERR "%s: Failed to write chconfig register\n",
+ DRIVER_NAME);
+ mutex_unlock(&the_tps->lock);
+ return status;
+ }
+
+ chgconfig = i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG);
+ the_tps->chgconf = chgconfig;
+ show_chgconfig(0, "chgconf", chgconfig);
+
+ status = i2c_smbus_write_byte_data(the_tps->client,
+ TPS_VDCDC1, vdcdc1);
+
+ if (status != 0)
+ printk(KERN_ERR "%s: Failed to write vdcdc1 register\n",
+ DRIVER_NAME);
+ else
+ pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME,
+ i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
+
+ mutex_unlock(&the_tps->lock);
+
+ return status;
+}
+EXPORT_SYMBOL(tps65013_set_low_pwr);
+
+/*-------------------------------------------------------------------------*/
+
+static int __init tps_init(void)
+{
+ u32 tries = 3;
+ int status = -ENODEV;
+
+ printk(KERN_INFO "%s: version %s\n", DRIVER_NAME, DRIVER_VERSION);
+
+ /* some boards have startup glitches */
+ while (tries--) {
+ status = i2c_add_driver(&tps65010_driver);
+ if (the_tps)
+ break;
+ i2c_del_driver(&tps65010_driver);
+ if (!tries) {
+ printk(KERN_ERR "%s: no chip?\n", DRIVER_NAME);
+ return -ENODEV;
+ }
+ pr_debug("%s: re-probe ...\n", DRIVER_NAME);
+ msleep(10);
+ }
+
+ return status;
+}
+/* NOTE: this MUST be initialized before the other parts of the system
+ * that rely on it ... but after the i2c bus on which this relies.
+ * That is, much earlier than on PC-type systems, which don't often use
+ * I2C as a core system bus.
+ */
+subsys_initcall(tps_init);
+
+static void __exit tps_exit(void)
+{
+ i2c_del_driver(&tps65010_driver);
+}
+module_exit(tps_exit);
+
projects / firefly-linux-kernel-4.4.55.git / commitdiff