Commit 391c5111 authored by Dmitry Baryshkov's avatar Dmitry Baryshkov Committed by Eric Miao
Browse files

[ARM] sa1100: remove unused collie_pm.c 



This file was never enabled in the mainline kernel, new ongoing work on
battery driver by Thomas Kunze makes it completely obsolete, so remove
it now.

Signed-off-by: default avatarDmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: default avatarEric Miao <eric.miao@marvell.com>
parent 18473473

arch/arm/mach-sa1100/collie_pm.c

deleted100644 → 0
+0 −296
Original line number Diff line number Diff line 
/*

 * Based on spitz_pm.c and sharp code.

 *

 * Copyright (C) 2001  SHARP

 * Copyright 2005 Pavel Machek <pavel@suse.cz>

 *

 * Distribute under GPLv2.

 *

 * Li-ion batteries are angry beasts, and they like to explode. This driver is not finished,

 * and sometimes charges them when it should not. If it makes angry lithium to come your way...

 * ...well, you have been warned.

 *

 * Actually, this should be quite safe, it seems sharp leaves charger enabled by default,

 * and my collie did not explode (yet).

 */



#include <linux/module.h>

#include <linux/stat.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/delay.h>

#include <linux/interrupt.h>

#include <linux/device.h>

#include <linux/platform_device.h>

#include <linux/gpio.h>



#include <asm/irq.h>

#include <mach/hardware.h>

#include <asm/hardware/scoop.h>

#include <mach/dma.h>

#include <mach/collie.h>

#include <asm/mach/sharpsl_param.h>

#include <asm/hardware/sharpsl_pm.h>



#include "../drivers/mfd/ucb1x00.h"



static struct ucb1x00 *ucb;

static int ad_revise;



#define ADCtoPower(x)	       ((330 * x * 2) / 1024)



static void collie_charger_init(void)

{

	int err;



	if (sharpsl_param.adadj != -1)

		ad_revise = sharpsl_param.adadj;



	/* Register interrupt handler. */

	if ((err = request_irq(COLLIE_IRQ_GPIO_AC_IN, sharpsl_ac_isr, IRQF_DISABLED,

			       "ACIN", sharpsl_ac_isr))) {

		printk("Could not get irq %d.\n", COLLIE_IRQ_GPIO_AC_IN);

		return;

	}

	if ((err = request_irq(COLLIE_IRQ_GPIO_CO, sharpsl_chrg_full_isr, IRQF_DISABLED,

			       "CO", sharpsl_chrg_full_isr))) {

		free_irq(COLLIE_IRQ_GPIO_AC_IN, sharpsl_ac_isr);

		printk("Could not get irq %d.\n", COLLIE_IRQ_GPIO_CO);

		return;

	}



	gpio_request(COLLIE_GPIO_CHARGE_ON, "charge on");

	gpio_direction_output(COLLIE_GPIO_CHARGE_ON, 1);



	ucb1x00_io_set_dir(ucb, 0, COLLIE_TC35143_GPIO_MBAT_ON | COLLIE_TC35143_GPIO_TMP_ON |

			           COLLIE_TC35143_GPIO_BBAT_ON);

	return;

}



static void collie_measure_temp(int on)

{

	if (on)

		ucb1x00_io_write(ucb, COLLIE_TC35143_GPIO_TMP_ON, 0);

	else

		ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_TMP_ON);

}



static void collie_charge(int on)

{

	/* Zaurus seems to contain LTC1731; it should know when to

	 * stop charging itself, so setting charge on should be

	 * relatively harmless (as long as it is not done too often).

	 */

	gpio_set_value(COLLIE_GPIO_CHARGE_ON, on);

}



static void collie_discharge(int on)

{

}



static void collie_discharge1(int on)

{

}



static void collie_presuspend(void)

{

}



static void collie_postsuspend(void)

{

}



static int collie_should_wakeup(unsigned int resume_on_alarm)

{

	return 0;

}



static unsigned long collie_charger_wakeup(void)

{

	return 0;

}



int collie_read_backup_battery(void)

{

	int voltage;



	ucb1x00_adc_enable(ucb);



	ucb1x00_io_write(ucb, COLLIE_TC35143_GPIO_BBAT_ON, 0);

	voltage = ucb1x00_adc_read(ucb, UCB_ADC_INP_AD1, UCB_SYNC);



	ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_BBAT_ON);

	ucb1x00_adc_disable(ucb);



	printk("Backup battery = %d(%d)\n", ADCtoPower(voltage), voltage);



	return ADCtoPower(voltage);

}



int collie_read_main_battery(void)

{

	int voltage, voltage_rev, voltage_volts;



	ucb1x00_adc_enable(ucb);

	ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_BBAT_ON);

	ucb1x00_io_write(ucb, COLLIE_TC35143_GPIO_MBAT_ON, 0);



	mdelay(1);

	voltage = ucb1x00_adc_read(ucb, UCB_ADC_INP_AD1, UCB_SYNC);



	ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_MBAT_ON);

	ucb1x00_adc_disable(ucb);



	voltage_rev = voltage + ((ad_revise * voltage) / 652);

	voltage_volts = ADCtoPower(voltage_rev);



	printk("Main battery = %d(%d)\n", voltage_volts, voltage);



	if (voltage != -1)

		return voltage_volts;

	else

		return voltage;

}



int collie_read_temp(void)

{

	int voltage;



	/* According to Sharp, temp must be > 973, main battery must be < 465,

	   FIXME: sharpsl_pm.c has both conditions negated? FIXME: values

	   are way out of range? */



	ucb1x00_adc_enable(ucb);

	ucb1x00_io_write(ucb, COLLIE_TC35143_GPIO_TMP_ON, 0);

	/* >1010 = battery removed, 460 = 22C ?, higher = lower temp ? */

	voltage = ucb1x00_adc_read(ucb, UCB_ADC_INP_AD0, UCB_SYNC);

	ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_TMP_ON);

	ucb1x00_adc_disable(ucb);



	printk("Battery temp = %d\n", voltage);

	return voltage;

}



static unsigned long read_devdata(int which)

{

	switch (which) {

	case SHARPSL_BATT_VOLT:

		return collie_read_main_battery();

	case SHARPSL_BATT_TEMP:

		return collie_read_temp();

	case SHARPSL_ACIN_VOLT:

		return 500;

	case SHARPSL_STATUS_ACIN: {

		int ret = GPLR & COLLIE_GPIO_AC_IN;

		printk("AC status = %d\n", ret);

		return ret;

	}

	case SHARPSL_STATUS_FATAL: {

		int ret = GPLR & COLLIE_GPIO_MAIN_BAT_LOW;

		printk("Fatal bat = %d\n", ret);

		return ret;

	}

	default:

		return ~0;

	}

}



struct battery_thresh collie_battery_levels_acin[] = {

	{ 420, 100},

	{ 417,  95},

	{ 415,  90},

	{ 413,  80},

	{ 411,  75},

	{ 408,  70},

	{ 406,  60},

	{ 403,  50},

	{ 398,  40},

	{ 391,  25},

	{  10,   5},

	{   0,   0},

};



struct battery_thresh collie_battery_levels[] = {

	{ 394, 100},

	{ 390,  95},

	{ 380,  90},

	{ 370,  80},

	{ 368,  75},	/* From sharp code: battery high with frontlight */

	{ 366,  70},	/* 60..90 -- fake values invented by me for testing */

	{ 364,  60},

	{ 362,  50},

	{ 360,  40},

	{ 358,  25},	/* From sharp code: battery low with frontlight */

	{ 356,   5},	/* From sharp code: battery verylow with frontlight */

	{   0,   0},

};



struct sharpsl_charger_machinfo collie_pm_machinfo = {

	.init             = collie_charger_init,

	.read_devdata	  = read_devdata,

	.discharge        = collie_discharge,

	.discharge1       = collie_discharge1,

	.charge           = collie_charge,

	.measure_temp     = collie_measure_temp,

	.presuspend       = collie_presuspend,

	.postsuspend      = collie_postsuspend,

	.charger_wakeup   = collie_charger_wakeup,

	.should_wakeup    = collie_should_wakeup,

	.bat_levels       = 12,

	.bat_levels_noac  = collie_battery_levels,

	.bat_levels_acin  = collie_battery_levels_acin,

	.status_high_acin = 368,

	.status_low_acin  = 358,

	.status_high_noac = 368,

	.status_low_noac  = 358,

	.charge_on_volt	  = 350,	/* spitz uses 2.90V, but lets play it safe. */

	.charge_on_temp   = 550,

	.charge_acin_high = 550,	/* collie does not seem to have sensor for this, anyway */

	.charge_acin_low  = 450,	/* ignored, too */

	.fatal_acin_volt  = 356,

	.fatal_noacin_volt = 356,



	.batfull_irq = 1,		/* We do not want periodical charge restarts */

};



static int __init collie_pm_ucb_add(struct ucb1x00_dev *pdev)

{

	sharpsl_pm.machinfo = &collie_pm_machinfo;

	ucb = pdev->ucb;

	return 0;

}



static struct ucb1x00_driver collie_pm_ucb_driver = {

	.add	= collie_pm_ucb_add,

};



static struct platform_device *collie_pm_device;



static int __init collie_pm_init(void)

{

	int ret;



	collie_pm_device = platform_device_alloc("sharpsl-pm", -1);

	if (!collie_pm_device)

		return -ENOMEM;



	collie_pm_device->dev.platform_data = &collie_pm_machinfo;

	ret = platform_device_add(collie_pm_device);



	if (ret)

		platform_device_put(collie_pm_device);



	if (!ret)

		ret = ucb1x00_register_driver(&collie_pm_ucb_driver);



	return ret;

}



static void __exit collie_pm_exit(void)

{

	ucb1x00_unregister_driver(&collie_pm_ucb_driver);

	platform_device_unregister(collie_pm_device);

}



module_init(collie_pm_init);

module_exit(collie_pm_exit);