[ARM] 3158/1: SharpSL: Add PM device driver for the SL-C7x0 machines.

obj-$(CONFIG_ARCH_LUBBOCK) += lubbock.o

obj-$(CONFIG_MACH_MAINSTONE) += mainstone.o

obj-$(CONFIG_ARCH_PXA_IDP) += idp.o

obj-$(CONFIG_PXA_SHARP_C7xx)	+= corgi.o corgi_ssp.o corgi_lcd.o

obj-$(CONFIG_PXA_SHARP_C7xx)	+= corgi.o corgi_ssp.o corgi_lcd.o sharpsl_pm.o corgi_pm.o

obj-$(CONFIG_PXA_SHARP_Cxx00)	+= spitz.o corgi_ssp.o corgi_lcd.o

obj-$(CONFIG_MACH_POODLE)	+= poodle.o

obj-$(CONFIG_MACH_TOSA)         += tosa.o

/*

 * Battery and Power Management code for the Sharp SL-C7xx

 *

 * Copyright (c) 2005 Richard Purdie

 *

 * 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/module.h>

#include <linux/stat.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/delay.h>

#include <linux/interrupt.h>

#include <linux/platform_device.h>

#include <asm/apm.h>

#include <asm/irq.h>

#include <asm/mach-types.h>

#include <asm/hardware.h>

#include <asm/hardware/scoop.h>

#include <asm/arch/sharpsl.h>

#include <asm/arch/corgi.h>

#include <asm/arch/pxa-regs.h>

#include "sharpsl.h"

static void corgi_charger_init(void)

{

	pxa_gpio_mode(CORGI_GPIO_ADC_TEMP_ON | GPIO_OUT);

	pxa_gpio_mode(CORGI_GPIO_CHRG_ON | GPIO_OUT);

	pxa_gpio_mode(CORGI_GPIO_CHRG_UKN | GPIO_OUT);

	pxa_gpio_mode(CORGI_GPIO_KEY_INT | GPIO_IN);

}

static void corgi_charge_led(int val)

{

	if (val == SHARPSL_LED_ERROR) {

		dev_dbg(sharpsl_pm.dev, "Charge LED Error\n");

	} else if (val == SHARPSL_LED_ON) {

		dev_dbg(sharpsl_pm.dev, "Charge LED On\n");

		GPSR0 = GPIO_bit(CORGI_GPIO_LED_ORANGE);

	} else {

		dev_dbg(sharpsl_pm.dev, "Charge LED Off\n");

		GPCR0 = GPIO_bit(CORGI_GPIO_LED_ORANGE);

	}

}

static void corgi_measure_temp(int on)

{

	if (on)

		GPSR(CORGI_GPIO_ADC_TEMP_ON) = GPIO_bit(CORGI_GPIO_ADC_TEMP_ON);

	else

		GPCR(CORGI_GPIO_ADC_TEMP_ON) = GPIO_bit(CORGI_GPIO_ADC_TEMP_ON);

}

static void corgi_charge(int on)

{

	if (on) {

		if (machine_is_corgi() && (sharpsl_pm.flags & SHARPSL_SUSPENDED)) {

			GPCR(CORGI_GPIO_CHRG_ON) = GPIO_bit(CORGI_GPIO_CHRG_ON);

			GPSR(CORGI_GPIO_CHRG_UKN) = GPIO_bit(CORGI_GPIO_CHRG_UKN);

		} else {

			GPSR(CORGI_GPIO_CHRG_ON) = GPIO_bit(CORGI_GPIO_CHRG_ON);

			GPCR(CORGI_GPIO_CHRG_UKN) = GPIO_bit(CORGI_GPIO_CHRG_UKN);

		}

	} else {

		GPCR(CORGI_GPIO_CHRG_ON) = GPIO_bit(CORGI_GPIO_CHRG_ON);

		GPCR(CORGI_GPIO_CHRG_UKN) = GPIO_bit(CORGI_GPIO_CHRG_UKN);

	}

}

static void corgi_discharge(int on)

{

	if (on)

		GPSR(CORGI_GPIO_DISCHARGE_ON) = GPIO_bit(CORGI_GPIO_DISCHARGE_ON);

	else

		GPCR(CORGI_GPIO_DISCHARGE_ON) = GPIO_bit(CORGI_GPIO_DISCHARGE_ON);

}

static void corgi_presuspend(void)

{

	int i;

	unsigned long wakeup_mask;

	/* charging , so CHARGE_ON bit is HIGH during OFF. */

	if (READ_GPIO_BIT(CORGI_GPIO_CHRG_ON))

		PGSR1 |= GPIO_bit(CORGI_GPIO_CHRG_ON);

	else

		PGSR1 &= ~GPIO_bit(CORGI_GPIO_CHRG_ON);

	if (READ_GPIO_BIT(CORGI_GPIO_LED_ORANGE))

		PGSR0 |= GPIO_bit(CORGI_GPIO_LED_ORANGE);

	else

		PGSR0 &= ~GPIO_bit(CORGI_GPIO_LED_ORANGE);

	if (READ_GPIO_BIT(CORGI_GPIO_CHRG_UKN))

		PGSR1 |= GPIO_bit(CORGI_GPIO_CHRG_UKN);

	else

		PGSR1 &= ~GPIO_bit(CORGI_GPIO_CHRG_UKN);

	/* Resume on keyboard power key */

	PGSR2 = (PGSR2 & ~CORGI_GPIO_ALL_STROBE_BIT) | CORGI_GPIO_STROBE_BIT(0);

	wakeup_mask = GPIO_bit(CORGI_GPIO_KEY_INT) | GPIO_bit(CORGI_GPIO_WAKEUP) | GPIO_bit(CORGI_GPIO_AC_IN) | GPIO_bit(CORGI_GPIO_CHRG_FULL);

	if (!machine_is_corgi())

		wakeup_mask |= GPIO_bit(CORGI_GPIO_MAIN_BAT_LOW);

	PWER = wakeup_mask | PWER_RTC;

	PRER = wakeup_mask;

	PFER = wakeup_mask;

	for (i = 0; i <=15; i++) {

		if (PRER & PFER & GPIO_bit(i)) {

			if (GPLR0 & GPIO_bit(i) )

				PRER &= ~GPIO_bit(i);

			else

				PFER &= ~GPIO_bit(i);

		}

	}

}

static void corgi_postsuspend(void)

{

}

/*

 * Check what brought us out of the suspend.

 * Return: 0 to sleep, otherwise wake

 */

static int corgi_should_wakeup(unsigned int resume_on_alarm)

{

	int is_resume = 0;

	dev_dbg(sharpsl_pm.dev, "GPLR0 = %x,%x\n", GPLR0, PEDR);

	if ((PEDR & GPIO_bit(CORGI_GPIO_AC_IN))) {

		if (STATUS_AC_IN()) {

			/* charge on */

			dev_dbg(sharpsl_pm.dev, "ac insert\n");

			sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;

		} else {

			/* charge off */

			dev_dbg(sharpsl_pm.dev, "ac remove\n");

			CHARGE_LED_OFF();

			CHARGE_OFF();

			sharpsl_pm.charge_mode = CHRG_OFF;

		}

	}

	if ((PEDR & GPIO_bit(CORGI_GPIO_CHRG_FULL)))

		dev_dbg(sharpsl_pm.dev, "Charge full interrupt\n");

	if (PEDR & GPIO_bit(CORGI_GPIO_KEY_INT))

		is_resume |= GPIO_bit(CORGI_GPIO_KEY_INT);

	if (PEDR & GPIO_bit(CORGI_GPIO_WAKEUP))

		is_resume |= GPIO_bit(CORGI_GPIO_WAKEUP);

	if (resume_on_alarm && (PEDR & PWER_RTC))

		is_resume |= PWER_RTC;

	dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume);

	return is_resume;

}

static unsigned long corgi_charger_wakeup(void)

{

	return ~GPLR0 & ( GPIO_bit(CORGI_GPIO_AC_IN) | GPIO_bit(CORGI_GPIO_KEY_INT) | GPIO_bit(CORGI_GPIO_WAKEUP) );

}

static int corgi_acin_status(void)

{

	return ((GPLR(CORGI_GPIO_AC_IN) & GPIO_bit(CORGI_GPIO_AC_IN)) != 0);

}

static struct sharpsl_charger_machinfo corgi_pm_machinfo = {

	.init            = corgi_charger_init,

	.gpio_batlock    = CORGI_GPIO_BAT_COVER,

	.gpio_acin       = CORGI_GPIO_AC_IN,

	.gpio_batfull    = CORGI_GPIO_CHRG_FULL,

	.status_acin     = corgi_acin_status,

	.discharge       = corgi_discharge,

	.charge          = corgi_charge,

	.chargeled       = corgi_charge_led,

	.measure_temp    = corgi_measure_temp,

	.presuspend      = corgi_presuspend,

	.postsuspend     = corgi_postsuspend,

	.charger_wakeup  = corgi_charger_wakeup,

	.should_wakeup   = corgi_should_wakeup,

	.bat_levels      = 40,

	.bat_levels_noac = spitz_battery_levels_noac,

	.bat_levels_acin = spitz_battery_levels_acin,

	.status_high_acin = 188,

	.status_low_acin  = 178,

	.status_high_noac = 185,

	.status_low_noac  = 175,

};

static struct platform_device *corgipm_device;

static int __devinit corgipm_init(void)

{

	int ret;

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

	if (!corgipm_device)

		return -ENOMEM;

	corgipm_device->dev.platform_data = &corgi_pm_machinfo;

	ret = platform_device_add(corgipm_device);

	if (ret)

		platform_device_put(corgipm_device);

	return ret;

}

static void corgipm_exit(void)

{

	platform_device_unregister(corgipm_device);

}

module_init(corgipm_init);

module_exit(corgipm_exit);