Remove 2.6.31 support.

SVN-Revision: 18673

2 files changed, 0 insertions, 992 deletions

diff --git a/target/linux/s3c24xx/files-2.6.31/drivers/power/bq27000_battery.c b/target/linux/s3c24xx/files-2.6.31/drivers/power/bq27000_battery.c
deleted file mode 100644
index 32655dce1f..0000000000
--- a/target/linux/s3c24xx/files-2.6.31/drivers/power/bq27000_battery.c
+++ /dev/null
@@ -1,477 +0,0 @@
-/*
- * Driver for batteries with bq27000 chips inside via HDQ
- *
- * Copyright 2008 Openmoko, Inc
- * Andy Green <andy@openmoko.com>
- *
- * based on ds2760 driver, original copyright notice for that --->
- *
- * Copyright © 2007 Anton Vorontsov
- *	       2004-2007 Matt Reimer
- *	       2004 Szabolcs Gyurko
- *
- * Use consistent with the GNU GPL is permitted,
- * provided that this copyright notice is
- * preserved in its entirety in all copies and derived works.
- *
- * Author:  Anton Vorontsov <cbou@mail.ru>
- *	    February 2007
- *
- *	    Matt Reimer <mreimer@vpop.net>
- *	    April 2004, 2005, 2007
- *
- *	    Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
- *	    September 2004
- */
-
-#include <linux/module.h>
-#include <linux/param.h>
-#include <linux/jiffies.h>
-#include <linux/delay.h>
-#include <linux/pm.h>
-#include <linux/workqueue.h>
-#include <linux/platform_device.h>
-#include <linux/power_supply.h>
-#include <linux/bq27000_battery.h>
-
-enum bq27000_regs {
-	/* RAM regs */
-		/* read-write after this */
-	BQ27000_CTRL = 0, /* Device Control Register */
-	BQ27000_MODE, /* Device Mode Register */
-	BQ27000_AR_L, /* At-Rate H L */
-	BQ27000_AR_H,
-		/* read-only after this */
-	BQ27000_ARTTE_L, /* At-Rate Time To Empty H L */
-	BQ27000_ARTTE_H,
-	BQ27000_TEMP_L, /* Reported Temperature H L */
-	BQ27000_TEMP_H,
-	BQ27000_VOLT_L, /* Reported Voltage H L */
-	BQ27000_VOLT_H,
-	BQ27000_FLAGS, /* Status Flags */
-	BQ27000_RSOC, /* Relative State of Charge */
-	BQ27000_NAC_L, /* Nominal Available Capacity H L */
-	BQ27000_NAC_H,
-	BQ27000_CACD_L, /* Discharge Compensated H L */
-	BQ27000_CACD_H,
-	BQ27000_CACT_L, /* Temperature Compensated H L */
-	BQ27000_CACT_H,
-	BQ27000_LMD_L, /* Last measured discharge H L */
-	BQ27000_LMD_H,
-	BQ27000_AI_L, /* Average Current H L */
-	BQ27000_AI_H,
-	BQ27000_TTE_L, /* Time to Empty H L */
-	BQ27000_TTE_H,
-	BQ27000_TTF_L, /* Time to Full H L */
-	BQ27000_TTF_H,
-	BQ27000_SI_L, /* Standby Current H L */
-	BQ27000_SI_H,
-	BQ27000_STTE_L, /* Standby Time To Empty H L */
-	BQ27000_STTE_H,
-	BQ27000_MLI_L, /* Max Load Current H L */
-	BQ27000_MLI_H,
-	BQ27000_MLTTE_L, /* Max Load Time To Empty H L */
-	BQ27000_MLTTE_H,
-	BQ27000_SAE_L, /* Available Energy H L */
-	BQ27000_SAE_H,
-	BQ27000_AP_L, /* Available Power H L */
-	BQ27000_AP_H,
-	BQ27000_TTECP_L, /* Time to Empty at Constant Power H L */
-	BQ27000_TTECP_H,
-	BQ27000_CYCL_L, /* Cycle count since learning cycle H L */
-	BQ27000_CYCL_H,
-	BQ27000_CYCT_L, /* Cycle Count Total H L */
-	BQ27000_CYCT_H,
-	BQ27000_CSOC, /* Compensated State Of Charge */
-	/* EEPROM regs */
-		/* read-write after this */
-	BQ27000_EE_EE_EN = 0x6e, /* EEPROM Program Enable */
-	BQ27000_EE_ILMD = 0x76, /* Initial Last Measured Discharge High Byte */
-	BQ27000_EE_SEDVF, /* Scaled EDVF Threshold */
-	BQ27000_EE_SEDV1, /* Scaled EDV1 Threshold */
-	BQ27000_EE_ISLC, /* Initial Standby Load Current */
-	BQ27000_EE_DMFSD, /* Digital Magnitude Filter and Self Discharge */
-	BQ27000_EE_TAPER, /* Aging Estimate Enable, Charge Termination Taper */
-	BQ27000_EE_PKCFG, /* Pack Configuration Values */
-	BQ27000_EE_IMLC, /* Initial Max Load Current or ID #3 */
-	BQ27000_EE_DCOMP, /* Discharge rate compensation constants or ID #2 */
-	BQ27000_EE_TCOMP, /* Temperature Compensation constants or ID #1 */
-};
-
-enum bq27000_status_flags {
-	BQ27000_STATUS_CHGS = 0x80, /* 1 = being charged */
-	BQ27000_STATUS_NOACT = 0x40, /* 1 = no activity */
-	BQ27000_STATUS_IMIN = 0x20, /* 1 = Lion taper current mode */
-	BQ27000_STATUS_CI = 0x10, /* 1 = capacity likely  innacurate */
-	BQ27000_STATUS_CALIP = 0x08, /* 1 = calibration in progress */
-	BQ27000_STATUS_VDQ = 0x04, /* 1 = capacity should be accurate */
-	BQ27000_STATUS_EDV1 = 0x02, /* 1 = end of discharge.. <6% left */
-	BQ27000_STATUS_EDVF = 0x01, /* 1 = no, it's really empty now */
-};
-
-#define NANOVOLTS_UNIT 3750
-
-struct bq27000_bat_regs {
-	int		ai;
-	int		flags;
-	int		lmd;
-	int		rsoc;
-	int		temp;
-	int		tte;
-	int		ttf;
-	int		volt;
-};
-
-struct bq27000_device_info {
-	struct device *dev;
-	struct power_supply bat;
-	struct power_supply ac;
-	struct power_supply usb;
-	struct delayed_work work;
-	struct bq27000_platform_data *pdata;
-
-	struct bq27000_bat_regs regs;
-};
-
-static unsigned int cache_time = 5000;
-module_param(cache_time, uint, 0644);
-MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
-
-/*
- * reading 16 bit values over HDQ has a special hazard where the
- * hdq device firmware can update the 16-bit register during the time we
- * read the two halves.  TI document SLUS556D recommends the algorithm here
- * to avoid trouble
- */
-
-static int hdq_read16(struct bq27000_device_info *di, int address)
-{
-	int acc;
-	int high;
-	int retries = 3;
-
-	while (retries--) {
-
-		high = (di->pdata->hdq_read)(address + 1); /* high part */
-
-		if (high < 0)
-			return high;
-		acc = (di->pdata->hdq_read)(address);
-		if (acc < 0)
-			return acc;
-
-		/* confirm high didn't change between reading it and low */
-		if (high == (di->pdata->hdq_read)(address + 1))
-			return (high << 8) | acc;
-	}
-
-	return -ETIME;
-}
-
-static void bq27000_battery_external_power_changed(struct power_supply *psy)
-{
-	struct bq27000_device_info *di = container_of(psy, struct bq27000_device_info, bat);
-
-	dev_dbg(di->dev, "%s\n", __FUNCTION__);
-	schedule_delayed_work(&di->work, 0);
-}
-
-static int bq27000_battery_get_property(struct power_supply *psy,
-				       enum power_supply_property psp,
-				       union power_supply_propval *val)
-{
-	int n;
-	struct bq27000_device_info *di = container_of(psy, struct bq27000_device_info, bat);
-
-	if (di->regs.rsoc < 0 && psp != POWER_SUPPLY_PROP_PRESENT)
-		return -ENODEV;
-
-	switch (psp) {
-	case POWER_SUPPLY_PROP_STATUS:
-		val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
-
-		if (!di->pdata->get_charger_online_status)
-			goto use_bat;
-		if ((di->pdata->get_charger_online_status)()) {
-			/*
-			 * charger is definitively present
-			 * we report our state in terms of what it says it
-			 * is doing
-			 */
-			if (!di->pdata->get_charger_active_status)
-				goto use_bat;
-
-			if ((di->pdata->get_charger_active_status)()) {
-				val->intval = POWER_SUPPLY_STATUS_CHARGING;
-				break;
-			}
-			val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
-			break;
-		}
-
-		/*
-		 * platform provided definite indication of charger presence,
-		 * and it is telling us it isn't there... but we are on so we
-		 * must be running from battery --->
-		 */
-
-		val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
-		break;
-
-use_bat:
-		/*
-		 * either the charger is not connected, or the
-		 * platform doesn't give info about charger, use battery state
-		 * but... battery state can be out of date by 4 seconds or
-		 * so... use the platform callbacks if possible.
-		 */
-
-		/* no real activity on the battery */
-		if (di->regs.ai < 2) {
-			if (!di->regs.ttf)
-				val->intval = POWER_SUPPLY_STATUS_FULL;
-			else
-				val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
-			break;
-		}
-		/* power is actually going in or out... */
-		if (di->regs.flags < 0)
-			return di->regs.flags;
-		if (di->regs.flags & BQ27000_STATUS_CHGS)
-			val->intval = POWER_SUPPLY_STATUS_CHARGING;
-		else
-			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
-		break;
-	case POWER_SUPPLY_PROP_HEALTH:
-		val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
-		/* Do we have accurate readings... */
-		if (di->regs.flags < 0)
-			return di->regs.flags;
-		if (di->regs.flags & BQ27000_STATUS_VDQ)
-			val->intval = POWER_SUPPLY_HEALTH_GOOD;
-		break;
-	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
-		if (di->regs.volt < 0)
-			return di->regs.volt;
-		/* mV -> uV */
-		val->intval = di->regs.volt * 1000;
-		break;
-	case POWER_SUPPLY_PROP_CURRENT_NOW:
-		if (di->regs.flags < 0)
-			return di->regs.flags;
-		if (di->regs.flags & BQ27000_STATUS_CHGS)
-			n = -NANOVOLTS_UNIT;
-		else
-			n = NANOVOLTS_UNIT;
-		if (di->regs.ai < 0)
-			return di->regs.ai;
-		val->intval = (di->regs.ai * n) / di->pdata->rsense_mohms;
-		break;
-	case POWER_SUPPLY_PROP_CHARGE_FULL:
-		if (di->regs.lmd < 0)
-			return di->regs.lmd;
-		val->intval = (di->regs.lmd * 3570) / di->pdata->rsense_mohms;
-		break;
-	case POWER_SUPPLY_PROP_TEMP:
-		if (di->regs.temp < 0)
-			return di->regs.temp;
-		/* K (in 0.25K units) is 273.15 up from C (in 0.1C)*/
-		/* 10926 = 27315 * 4 / 10 */
-		val->intval = (((long)di->regs.temp * 10l) - 10926) / 4;
-		break;
-	case POWER_SUPPLY_PROP_TECHNOLOGY:
-		val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
-		break;
-	case POWER_SUPPLY_PROP_CAPACITY:
-		val->intval = di->regs.rsoc;
-		if (val->intval < 0)
-			return val->intval;
-		break;
-	case POWER_SUPPLY_PROP_PRESENT:
-		val->intval = !(di->regs.rsoc < 0);
-		break;
-	case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
-		if (di->regs.tte < 0)
-			return di->regs.tte;
-		val->intval = 60 * di->regs.tte;
-		break;
-	case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
-		if (di->regs.ttf < 0)
-			return di->regs.ttf;
-		val->intval = 60 * di->regs.ttf;
-		break;
-	case POWER_SUPPLY_PROP_ONLINE:
-		if (di->pdata->get_charger_online_status)
-			val->intval = (di->pdata->get_charger_online_status)();
-		else
-			return -EINVAL;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static void bq27000_battery_work(struct work_struct *work)
-{
-	struct bq27000_device_info *di =
-		container_of(work, struct bq27000_device_info, work.work);
-
-	if ((di->pdata->hdq_initialized)()) {
-		struct bq27000_bat_regs regs;
-
-		regs.ai    = hdq_read16(di, BQ27000_AI_L);
-		regs.flags = (di->pdata->hdq_read)(BQ27000_FLAGS);
-		regs.lmd   = hdq_read16(di, BQ27000_LMD_L);
-		regs.rsoc  = (di->pdata->hdq_read)(BQ27000_RSOC);
-		regs.temp  = hdq_read16(di, BQ27000_TEMP_L);
-		regs.tte   = hdq_read16(di, BQ27000_TTE_L);
-		regs.ttf   = hdq_read16(di, BQ27000_TTF_L);
-		regs.volt  = hdq_read16(di, BQ27000_VOLT_L);
-
-		if (memcmp (&regs, &di->regs, sizeof(regs)) != 0) {
-			di->regs = regs;
-			power_supply_changed(&di->bat);
-		}
-	}
-
-	if (!schedule_delayed_work(&di->work, cache_time))
-		dev_err(di->dev, "battery service reschedule failed\n");
-}
-
-static enum power_supply_property bq27000_battery_props[] = {
-	POWER_SUPPLY_PROP_STATUS,
-	POWER_SUPPLY_PROP_HEALTH,
-	POWER_SUPPLY_PROP_VOLTAGE_NOW,
-	POWER_SUPPLY_PROP_CURRENT_NOW,
-	POWER_SUPPLY_PROP_CHARGE_FULL,
-	POWER_SUPPLY_PROP_TEMP,
-	POWER_SUPPLY_PROP_TECHNOLOGY,
-	POWER_SUPPLY_PROP_PRESENT,
-	POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
-	POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
-	POWER_SUPPLY_PROP_CAPACITY,
-	POWER_SUPPLY_PROP_ONLINE
-};
-
-static int bq27000_battery_probe(struct platform_device *pdev)
-{
-	int retval = 0;
-	struct bq27000_device_info *di;
-	struct bq27000_platform_data *pdata;
-
-	dev_info(&pdev->dev, "BQ27000 Battery Driver (C) 2008 Openmoko, Inc\n");
-
-	di = kzalloc(sizeof(*di), GFP_KERNEL);
-	if (!di) {
-		retval = -ENOMEM;
-		goto di_alloc_failed;
-	}
-
-	platform_set_drvdata(pdev, di);
-
-	pdata = pdev->dev.platform_data;
-	di->dev		= &pdev->dev;
-	/* di->w1_dev	     = pdev->dev.parent; */
-	di->bat.name	   = pdata->name;
-	di->bat.type	   = POWER_SUPPLY_TYPE_BATTERY;
-	di->bat.properties     = bq27000_battery_props;
-	di->bat.num_properties = ARRAY_SIZE(bq27000_battery_props);
-	di->bat.get_property   = bq27000_battery_get_property;
-	di->bat.external_power_changed =
-				  bq27000_battery_external_power_changed;
-	di->bat.use_for_apm = 1;
-	di->pdata = pdata;
-
-	retval = power_supply_register(&pdev->dev, &di->bat);
-	if (retval) {
-		dev_err(di->dev, "failed to register battery\n");
-		goto batt_failed;
-	}
-
-	INIT_DELAYED_WORK(&di->work, bq27000_battery_work);
-
-	if (!schedule_delayed_work(&di->work, 0))
-		dev_err(di->dev, "failed to schedule bq27000_battery_work\n");
-
-	return 0;
-
-batt_failed:
-	kfree(di);
-di_alloc_failed:
-	return retval;
-}
-
-static int bq27000_battery_remove(struct platform_device *pdev)
-{
-	struct bq27000_device_info *di = platform_get_drvdata(pdev);
-
-	cancel_delayed_work(&di->work);
-
-	power_supply_unregister(&di->bat);
-
-	return 0;
-}
-
-void bq27000_charging_state_change(struct platform_device *pdev)
-{
-	struct bq27000_device_info *di = platform_get_drvdata(pdev);
-
-	if (!di)
-	    return;
-}
-EXPORT_SYMBOL_GPL(bq27000_charging_state_change);
-
-#ifdef CONFIG_PM
-
-static int bq27000_battery_suspend(struct platform_device *pdev,
-				  pm_message_t state)
-{
-	struct bq27000_device_info *di = platform_get_drvdata(pdev);
-
-	cancel_delayed_work(&di->work);
-	return 0;
-}
-
-static int bq27000_battery_resume(struct platform_device *pdev)
-{
-	struct bq27000_device_info *di = platform_get_drvdata(pdev);
-
-	schedule_delayed_work(&di->work, 0);
-	return 0;
-}
-
-#else
-
-#define bq27000_battery_suspend NULL
-#define bq27000_battery_resume NULL
-
-#endif /* CONFIG_PM */
-
-static struct platform_driver bq27000_battery_driver = {
-	.driver = {
-		.name = "bq27000-battery",
-	},
-	.probe	  = bq27000_battery_probe,
-	.remove   = bq27000_battery_remove,
-	.suspend  = bq27000_battery_suspend,
-	.resume	  = bq27000_battery_resume,
-};
-
-static int __init bq27000_battery_init(void)
-{
-	return platform_driver_register(&bq27000_battery_driver);
-}
-
-static void __exit bq27000_battery_exit(void)
-{
-	platform_driver_unregister(&bq27000_battery_driver);
-}
-
-module_init(bq27000_battery_init);
-module_exit(bq27000_battery_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Andy Green <andy@openmoko.com>");
-MODULE_DESCRIPTION("bq27000 battery driver");
diff --git a/target/linux/s3c24xx/files-2.6.31/drivers/power/hdq.c b/target/linux/s3c24xx/files-2.6.31/drivers/power/hdq.c
deleted file mode 100644
index f03fabfb1a..0000000000
--- a/target/linux/s3c24xx/files-2.6.31/drivers/power/hdq.c
+++ /dev/null
@@ -1,515 +0,0 @@
-/*
- * HDQ generic GPIO bitbang driver using FIQ
- *
- * (C) 2006-2007 by Openmoko, Inc.
- * Author: Andy Green <andy@openmoko.com>
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-#include <linux/hdq.h>
-
-#define HDQ_READ 0
-#define HDQ_WRITE 0x80
-
-enum hdq_bitbang_states {
-	HDQB_IDLE = 0,
-	HDQB_TX_BREAK,
-	HDQB_TX_BREAK_RECOVERY,
-	HDQB_ADS_CALC,
-	HDQB_ADS_LOW,
-	HDQB_ADS_HIGH,
-	HDQB_WAIT_RX,
-	HDQB_DATA_RX_LOW,
-	HDQB_DATA_RX_HIGH,
-	HDQB_WAIT_TX,
-};
-
-static struct hdq_priv {
-	u8 hdq_probed; /* nonzero after HDQ driver probed */
-	struct mutex hdq_lock; /* if you want to use hdq, you have to take lock */
-	unsigned long hdq_gpio_pin; /* GTA02 = GPD14 which pin to meddle with */
-	u8 hdq_ads; /* b7..b6 = register address, b0 = r/w */
-	u8 hdq_tx_data; /* data to tx for write action */
-	u8 hdq_rx_data; /* data received in read action */
-	u8 hdq_request_ctr; /* incremented by "user" to request a transfer */
-	u8 hdq_transaction_ctr; /* incremented after each transfer */
-	u8 hdq_error; /* 0 = no error */
-	u8 hdq_ctr;
-	u8 hdq_ctr2;
-	u8 hdq_bit;
-	u8 hdq_shifter;
-	u8 hdq_tx_data_done;
-	enum hdq_bitbang_states hdq_state;
-	int reported_error;
-
-	struct hdq_platform_data *pdata;
-} hdq_priv;
-
-
-static void hdq_bad(void)
-{
-	if (!hdq_priv.reported_error)
-		printk(KERN_ERR "HDQ error: %d\n", hdq_priv.hdq_error);
-	hdq_priv.reported_error = 1;
-}
-
-static void hdq_good(void)
-{
-	if (hdq_priv.reported_error)
-		printk(KERN_INFO "HDQ responds again\n");
-	hdq_priv.reported_error = 0;
-}
-
-int hdq_fiq_handler(void)
-{
-	if (!hdq_priv.hdq_probed)
-		return 0;
-
-	switch (hdq_priv.hdq_state) {
-	case HDQB_IDLE:
-		if (hdq_priv.hdq_request_ctr == hdq_priv.hdq_transaction_ctr)
-			break;
-		hdq_priv.hdq_ctr = 250 / HDQ_SAMPLE_PERIOD_US;
-		hdq_priv.pdata->gpio_set(0);
-		hdq_priv.pdata->gpio_dir_out();
-		hdq_priv.hdq_tx_data_done = 0;
-		hdq_priv.hdq_state = HDQB_TX_BREAK;
-		break;
-
-	case HDQB_TX_BREAK: /* issue low for > 190us */
-		if (--hdq_priv.hdq_ctr == 0) {
-			hdq_priv.hdq_ctr = 60 / HDQ_SAMPLE_PERIOD_US;
-			hdq_priv.hdq_state = HDQB_TX_BREAK_RECOVERY;
-			hdq_priv.pdata->gpio_set(1);
-		}
-		break;
-
-	case HDQB_TX_BREAK_RECOVERY: /* issue low for > 40us */
-		if (--hdq_priv.hdq_ctr)
-			break;
-		hdq_priv.hdq_shifter = hdq_priv.hdq_ads;
-		hdq_priv.hdq_bit = 8; /* 8 bits of ads / rw */
-		hdq_priv.hdq_tx_data_done = 0; /* doing ads */
-		/* fallthru on last one */
-	case HDQB_ADS_CALC:
-		if (hdq_priv.hdq_shifter & 1)
-			hdq_priv.hdq_ctr = 50 / HDQ_SAMPLE_PERIOD_US;
-		else
-			hdq_priv.hdq_ctr = 120 / HDQ_SAMPLE_PERIOD_US;
-		/* carefully precompute the other phase length */
-		hdq_priv.hdq_ctr2 = (210 - (hdq_priv.hdq_ctr * HDQ_SAMPLE_PERIOD_US)) /
-				HDQ_SAMPLE_PERIOD_US;
-		hdq_priv.hdq_state = HDQB_ADS_LOW;
-		hdq_priv.hdq_shifter >>= 1;
-		hdq_priv.hdq_bit--;
-		hdq_priv.pdata->gpio_set(0);
-		break;
-
-	case HDQB_ADS_LOW:
-		if (--hdq_priv.hdq_ctr)
-			break;
-		hdq_priv.pdata->gpio_set(1);
-		hdq_priv.hdq_state = HDQB_ADS_HIGH;
-		break;
-
-	case HDQB_ADS_HIGH:
-		if (--hdq_priv.hdq_ctr2 > 1) /* account for HDQB_ADS_CALC */
-			break;
-		if (hdq_priv.hdq_bit) { /* more bits to do */
-			hdq_priv.hdq_state = HDQB_ADS_CALC;
-			break;
-		}
-		/* no more bits, wait it out until hdq_priv.hdq_ctr2 exhausted */
-		if (hdq_priv.hdq_ctr2)
-			break;
-		/* ok no more bits and very last state */
-		hdq_priv.hdq_ctr = 60 / HDQ_SAMPLE_PERIOD_US;
-		/* FIXME 0 = read */
-		if (hdq_priv.hdq_ads & 0x80) { /* write the byte out */
-			 /* set delay before payload */
-			hdq_priv.hdq_ctr = 300 / HDQ_SAMPLE_PERIOD_US;
- 			/* already high, no need to write */
-			hdq_priv.hdq_state = HDQB_WAIT_TX;
-			break;
-		}
-		/* read the next byte */
-		hdq_priv.hdq_bit = 8; /* 8 bits of data */
-		hdq_priv.hdq_ctr = 2500 / HDQ_SAMPLE_PERIOD_US;
-		hdq_priv.hdq_state = HDQB_WAIT_RX;
-		hdq_priv.pdata->gpio_dir_in();
-		break;
-
-	case HDQB_WAIT_TX: /* issue low for > 40us */
-		if (--hdq_priv.hdq_ctr)
-			break;
-		if (!hdq_priv.hdq_tx_data_done) { /* was that the data sent? */
-			hdq_priv.hdq_tx_data_done++;
-			hdq_priv.hdq_shifter = hdq_priv.hdq_tx_data;
-			hdq_priv.hdq_bit = 8; /* 8 bits of data */
-			hdq_priv.hdq_state = HDQB_ADS_CALC; /* start sending */
-			break;
-		}
-		hdq_priv.hdq_error = 0;
-		hdq_priv.hdq_transaction_ctr = hdq_priv.hdq_request_ctr;
-		hdq_priv.hdq_state = HDQB_IDLE; /* all tx is done */
-		/* idle in input mode, it's pulled up by 10K */
-		hdq_priv.pdata->gpio_dir_in();
-		break;
-
-	case HDQB_WAIT_RX: /* wait for battery to talk to us */
-		if (hdq_priv.pdata->gpio_get() == 0) {
-			/* it talks to us! */
-			hdq_priv.hdq_ctr2 = 1;
-			hdq_priv.hdq_bit = 8; /* 8 bits of data */
-			/* timeout */
-			hdq_priv.hdq_ctr = 500 / HDQ_SAMPLE_PERIOD_US;
-			hdq_priv.hdq_state = HDQB_DATA_RX_LOW;
-			break;
-		}
-		if (--hdq_priv.hdq_ctr == 0) { /* timed out, error */
-			hdq_priv.hdq_error = 1;
-			hdq_priv.hdq_transaction_ctr = hdq_priv.hdq_request_ctr;
-			hdq_priv.hdq_state = HDQB_IDLE; /* abort */
-		}
-		break;
-
-	/*
-	 * HDQ basically works by measuring the low time of the bit cell
-	 * 32-50us --> '1', 80 - 145us --> '0'
-	 */
-
-	case HDQB_DATA_RX_LOW:
-		if (hdq_priv.pdata->gpio_get()) {
-			hdq_priv.hdq_rx_data >>= 1;
-			if (hdq_priv.hdq_ctr2 <= (65 / HDQ_SAMPLE_PERIOD_US))
-				hdq_priv.hdq_rx_data |= 0x80;
-
-			if (--hdq_priv.hdq_bit == 0) {
-				hdq_priv.hdq_error = 0;
-				hdq_priv.hdq_transaction_ctr =
-							hdq_priv.hdq_request_ctr;
-
-				hdq_priv.hdq_state = HDQB_IDLE;
-			} else
-				hdq_priv.hdq_state = HDQB_DATA_RX_HIGH;
-			/* timeout */
-			hdq_priv.hdq_ctr = 1000 / HDQ_SAMPLE_PERIOD_US;
-			hdq_priv.hdq_ctr2 = 1;
-			break;
-		}
-		hdq_priv.hdq_ctr2++;
-		if (--hdq_priv.hdq_ctr)
-			break;
-		 /* timed out, error */
-		hdq_priv.hdq_error = 2;
-		hdq_priv.hdq_transaction_ctr = hdq_priv.hdq_request_ctr;
-		hdq_priv.hdq_state = HDQB_IDLE; /* abort */
-		break;
-
-	case HDQB_DATA_RX_HIGH:
-		if (!hdq_priv.pdata->gpio_get()) {
-			/* it talks to us! */
-			hdq_priv.hdq_ctr2 = 1;
-			/* timeout */
-			hdq_priv.hdq_ctr = 400 / HDQ_SAMPLE_PERIOD_US;
-			hdq_priv.hdq_state = HDQB_DATA_RX_LOW;
-			break;
-		}
-		if (--hdq_priv.hdq_ctr)
-			break;
-		/* timed out, error */
-		hdq_priv.hdq_error = 3;
-		hdq_priv.hdq_transaction_ctr = hdq_priv.hdq_request_ctr;
-
-		/* we're in input mode already */
-		hdq_priv.hdq_state = HDQB_IDLE; /* abort */
-		break;
-	}
-
-	/* Are we interested in keeping the FIQ source alive ? */
-	if (hdq_priv.hdq_state != HDQB_IDLE)
-		return 1;
-	else
-		return 0;
-}
-static int fiq_busy(void)
-{
-	int request = (volatile u8)hdq_priv.hdq_request_ctr;
-	int transact = (volatile u8)hdq_priv.hdq_transaction_ctr;
-
-
-	return (request != transact);
-}
-
-int hdq_initialized(void)
-{
-	return hdq_priv.hdq_probed;
-}
-EXPORT_SYMBOL_GPL(hdq_initialized);
-
-int hdq_read(int address)
-{
-	int count_sleeps = 5;
-	int ret = -ETIME;
-
-	if (!hdq_priv.hdq_probed)
-		return -EINVAL;
-
-	mutex_lock(&hdq_priv.hdq_lock);
-
-	hdq_priv.hdq_error = 0;
-	hdq_priv.hdq_ads = address | HDQ_READ;
-	hdq_priv.hdq_request_ctr++;
-	hdq_priv.pdata->kick_fiq();
-	/*
-	 * FIQ takes care of it while we block our calling process
-	 * But we're not spinning -- other processes run normally while
-	 * we wait for the result
-	 */
-	while (count_sleeps--) {
-		msleep(10); /* valid transaction always completes in < 10ms */
-
-		if (fiq_busy())
-			continue;
-
-		if (hdq_priv.hdq_error) {
-			hdq_bad();
-			goto done; /* didn't see a response in good time */
-		}
-		hdq_good();
-
-		ret = hdq_priv.hdq_rx_data;
-		goto done;
-	}
-
-done:
-	mutex_unlock(&hdq_priv.hdq_lock);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(hdq_read);
-
-int hdq_write(int address, u8 data)
-{
-	int count_sleeps = 5;
-	int ret = -ETIME;
-
-	if (!hdq_priv.hdq_probed)
-		return -EINVAL;
-
-	mutex_lock(&hdq_priv.hdq_lock);
-
-	hdq_priv.hdq_error = 0;
-	hdq_priv.hdq_ads = address | HDQ_WRITE;
-	hdq_priv.hdq_tx_data = data;
-	hdq_priv.hdq_request_ctr++;
-	hdq_priv.pdata->kick_fiq();
-	/*
-	 * FIQ takes care of it while we block our calling process
-	 * But we're not spinning -- other processes run normally while
-	 * we wait for the result
-	 */
-	while (count_sleeps--) {
-		msleep(10); /* valid transaction always completes in < 10ms */
-
-		if (fiq_busy())
-			continue; /* something bad with FIQ */
-
-		if (hdq_priv.hdq_error) {
-			hdq_bad();
-			goto done; /* didn't see a response in good time */
-		}
-		hdq_good();
-
-		ret = 0;
-		goto done;
-	}
-
-done:
-	mutex_unlock(&hdq_priv.hdq_lock);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(hdq_write);
-
-/* sysfs */
-
-static ssize_t hdq_sysfs_dump(struct device *dev, struct device_attribute *attr,
-			 char *buf)
-{
-	int n;
-	int v;
-	u8 u8a[128]; /* whole address space for HDQ */
-	char *end = buf;
-
-	if (!hdq_priv.hdq_probed)
-		return -EINVAL;
-
-	/* the dump does not take care about 16 bit regs, because at this
-	 * bus level we don't know about the chip details
-	 */
-	for (n = 0; n < sizeof(u8a); n++) {
-		v = hdq_read(n);
-		if (v < 0)
-			goto bail;
-		u8a[n] = v;
-	}
-
-	for (n = 0; n < sizeof(u8a); n += 16) {
-		hex_dump_to_buffer(u8a + n, sizeof(u8a), 16, 1, end, 4096, 0);
-		end += strlen(end);
-		*end++ = '\n';
-		*end = '\0';
-	}
-	return (end - buf);
-
-bail:
-	return sprintf(buf, "ERROR %d\n", v);
-}
-
-/* you write by <address> <data>, eg, "34 128" */
-
-#define atoi(str) simple_strtoul(((str != NULL) ? str : ""), NULL, 0)
-
-static ssize_t hdq_sysfs_write(struct device *dev,
-			       struct device_attribute *attr,
-			       const char *buf, size_t count)
-{
-	const char *end = buf + count;
-	int address = atoi(buf);
-
-	if (!hdq_priv.hdq_probed)
-		return -EINVAL;
-
-	while ((buf != end) && (*buf != ' '))
-		buf++;
-	if (buf >= end)
-		return 0;
-	while ((buf < end) && (*buf == ' '))
-		buf++;
-	if (buf >= end)
-		return 0;
-
-	hdq_write(address, atoi(buf));
-
-	return count;
-}
-
-static DEVICE_ATTR(dump, 0400, hdq_sysfs_dump, NULL);
-static DEVICE_ATTR(write, 0600, NULL, hdq_sysfs_write);
-
-static struct attribute *hdq_sysfs_entries[] = {
-	&dev_attr_dump.attr,
-	&dev_attr_write.attr,
-	NULL
-};
-
-static struct attribute_group hdq_attr_group = {
-	.name	= "hdq",
-	.attrs	= hdq_sysfs_entries,
-};
-
-
-#ifdef CONFIG_PM
-static int hdq_suspend(struct platform_device *pdev, pm_message_t state)
-{
-	/* after 18s of this, the battery monitor will also go to sleep */
-	hdq_priv.pdata->gpio_dir_in();
-	hdq_priv.pdata->disable_fiq();
-	return 0;
-}
-
-static int hdq_resume(struct platform_device *pdev)
-{
-	hdq_priv.pdata->gpio_set(1);
-	hdq_priv.pdata->gpio_dir_out();
-	hdq_priv.pdata->enable_fiq();
-	return 0;
-}
-#endif
-
-static int __init hdq_probe(struct platform_device *pdev)
-{
-	struct resource *r = platform_get_resource(pdev, 0, 0);
-	int ret;
-	struct hdq_platform_data *pdata = pdev->dev.platform_data;
-
-	if (!r || !pdata)
-		return -EINVAL;
-
-	platform_set_drvdata(pdev, NULL);
-
-	mutex_init(&hdq_priv.hdq_lock);
-
-	/* set our HDQ comms pin from the platform data */
-	hdq_priv.hdq_gpio_pin = r->start;
-	hdq_priv.pdata = pdata;
-
-	hdq_priv.pdata->gpio_set(1);
-	hdq_priv.pdata->gpio_dir_out();
-
-	/* Initialize FIQ */
-	if (hdq_priv.pdata->enable_fiq() < 0) {
-		dev_err(&pdev->dev, "Could not enable FIQ source\n");
-		return -EINVAL;
-	}
-
-	ret = sysfs_create_group(&pdev->dev.kobj, &hdq_attr_group);
-	if (ret)
-		return ret;
-
-	hdq_priv.hdq_probed = 1; /* we are ready to do stuff now */
-
-	/*
-	 * if wanted, users can defer registration of devices
-	 * that depend on HDQ until after we register, and can use our
-	 * device as parent so suspend-resume ordering is correct
-	 */
-	if (pdata->attach_child_devices)
-		(pdata->attach_child_devices)(&pdev->dev);
-
-	hdq_priv.pdata = pdata;
-
-	return 0;
-}
-
-static int hdq_remove(struct platform_device *pdev)
-{
-	sysfs_remove_group(&pdev->dev.kobj, &hdq_attr_group);
-	return 0;
-}
-
-static struct platform_driver hdq_driver = {
-	.probe		= hdq_probe,
-	.remove		= hdq_remove,
-#ifdef CONFIG_PM
-	.suspend	= hdq_suspend,
-	.resume		= hdq_resume,
-#endif
-	.driver		= {
-		.name		= "hdq",
-	},
-};
-
-static int __init hdq_init(void)
-{
-	return platform_driver_register(&hdq_driver);
-}
-
-static void __exit hdq_exit(void)
-{
- 	platform_driver_unregister(&hdq_driver);
-}
-
-module_init(hdq_init);
-module_exit(hdq_exit);
-
-MODULE_AUTHOR("Andy Green <andy@openmoko.com>");
-MODULE_DESCRIPTION("HDQ driver");