[deliverable/linux.git] / arch / arm / mach-pxa / corgi_pm.c

/*
 * 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 <linux/apm-emulation.h>

#include <asm/irq.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>

#include <mach/sharpsl.h>
#include <mach/corgi.h>
#include <mach/pxa-regs.h>
#include <mach/pxa2xx-regs.h>
#include <mach/pxa2xx-gpio.h>
#include "sharpsl.h"

#define SHARPSL_CHARGE_ON_VOLT         0x99  /* 2.9V */
#define SHARPSL_CHARGE_ON_TEMP         0xe0  /* 2.9V */
#define SHARPSL_CHARGE_ON_ACIN_HIGH    0x9b  /* 6V */
#define SHARPSL_CHARGE_ON_ACIN_LOW     0x34  /* 2V */
#define SHARPSL_FATAL_ACIN_VOLT        182   /* 3.45V */
#define SHARPSL_FATAL_NOACIN_VOLT      170   /* 3.40V */

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);
	sharpsl_pm_pxa_init();
}

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 (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
			/* 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");
			sharpsl_pm_led(SHARPSL_LED_OFF);
			sharpsl_pm.machinfo->charge(0);
			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) );
}

unsigned long corgipm_read_devdata(int type)
{
	switch(type) {
	case SHARPSL_STATUS_ACIN:
		return ((GPLR(CORGI_GPIO_AC_IN) & GPIO_bit(CORGI_GPIO_AC_IN)) != 0);
	case SHARPSL_STATUS_LOCK:
		return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batlock);
	case SHARPSL_STATUS_CHRGFULL:
		return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batfull);
	case SHARPSL_STATUS_FATAL:
		return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_fatal);
	case SHARPSL_ACIN_VOLT:
		return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT);
	case SHARPSL_BATT_TEMP:
		return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP);
	case SHARPSL_BATT_VOLT:
	default:
		return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT);
	}
}

static struct sharpsl_charger_machinfo corgi_pm_machinfo = {
	.init            = corgi_charger_init,
	.exit            = sharpsl_pm_pxa_remove,
	.gpio_batlock    = CORGI_GPIO_BAT_COVER,
	.gpio_acin       = CORGI_GPIO_AC_IN,
	.gpio_batfull    = CORGI_GPIO_CHRG_FULL,
	.discharge       = corgi_discharge,
	.charge          = corgi_charge,
	.measure_temp    = corgi_measure_temp,
	.presuspend      = corgi_presuspend,
	.postsuspend     = corgi_postsuspend,
	.read_devdata    = corgipm_read_devdata,
	.charger_wakeup  = corgi_charger_wakeup,
	.should_wakeup   = corgi_should_wakeup,
#ifdef CONFIG_BACKLIGHT_CORGI
	.backlight_limit = corgibl_limit_intensity,
#endif
	.charge_on_volt	  = SHARPSL_CHARGE_ON_VOLT,
	.charge_on_temp	  = SHARPSL_CHARGE_ON_TEMP,
	.charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
	.charge_acin_low  = SHARPSL_CHARGE_ON_ACIN_LOW,
	.fatal_acin_volt  = SHARPSL_FATAL_ACIN_VOLT,
	.fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT,
	.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;

	if (!machine_is_corgi() && !machine_is_shepherd()
			&& !machine_is_husky())
		return -ENODEV;

	corgipm_device = platform_device_alloc("sharpsl-pm", -1);
	if (!corgipm_device)
		return -ENOMEM;

	if (!machine_is_corgi())
	    corgi_pm_machinfo.batfull_irq = 1;

	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);
Commit	Line	Data
d72f25b0 RP	1	/*
	2	* Battery and Power Management code for the Sharp SL-C7xx
	3	*
	4	* Copyright (c) 2005 Richard Purdie
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*
	10	*/
	11
	12	#include <linux/module.h>
	13	#include <linux/stat.h>
	14	#include <linux/init.h>
	15	#include <linux/kernel.h>
	16	#include <linux/delay.h>
	17	#include <linux/interrupt.h>
	18	#include <linux/platform_device.h>
14fca61a RK	19	#include <linux/apm-emulation.h>
14fca61a RK	20
d72f25b0 RP	21	#include <asm/irq.h>
d72f25b0 RP	22	#include <asm/mach-types.h>
a09e64fb	23	#include <mach/hardware.h>
d72f25b0	24
a09e64fb RK	25	#include <mach/sharpsl.h>
	26	#include <mach/corgi.h>
	27	#include <mach/pxa-regs.h>
	28	#include <mach/pxa2xx-regs.h>
	29	#include <mach/pxa2xx-gpio.h>
d72f25b0 RP	30	#include "sharpsl.h"
d72f25b0 RP	31
f8703dc8 RP	32	#define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */
	33	#define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */
	34	#define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */
	35	#define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */
	36	#define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */
	37	#define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */
	38
d72f25b0 RP	39	static void corgi_charger_init(void)
	40	{
	41	pxa_gpio_mode(CORGI_GPIO_ADC_TEMP_ON \| GPIO_OUT);
	42	pxa_gpio_mode(CORGI_GPIO_CHRG_ON \| GPIO_OUT);
	43	pxa_gpio_mode(CORGI_GPIO_CHRG_UKN \| GPIO_OUT);
	44	pxa_gpio_mode(CORGI_GPIO_KEY_INT \| GPIO_IN);
b7557de4	45	sharpsl_pm_pxa_init();
d72f25b0 RP	46	}
	47
	48	static void corgi_measure_temp(int on)
	49	{
	50	if (on)
	51	GPSR(CORGI_GPIO_ADC_TEMP_ON) = GPIO_bit(CORGI_GPIO_ADC_TEMP_ON);
	52	else
	53	GPCR(CORGI_GPIO_ADC_TEMP_ON) = GPIO_bit(CORGI_GPIO_ADC_TEMP_ON);
	54	}
	55
	56	static void corgi_charge(int on)
	57	{
	58	if (on) {
	59	if (machine_is_corgi() && (sharpsl_pm.flags & SHARPSL_SUSPENDED)) {
	60	GPCR(CORGI_GPIO_CHRG_ON) = GPIO_bit(CORGI_GPIO_CHRG_ON);
	61	GPSR(CORGI_GPIO_CHRG_UKN) = GPIO_bit(CORGI_GPIO_CHRG_UKN);
	62	} else {
	63	GPSR(CORGI_GPIO_CHRG_ON) = GPIO_bit(CORGI_GPIO_CHRG_ON);
	64	GPCR(CORGI_GPIO_CHRG_UKN) = GPIO_bit(CORGI_GPIO_CHRG_UKN);
	65	}
	66	} else {
	67	GPCR(CORGI_GPIO_CHRG_ON) = GPIO_bit(CORGI_GPIO_CHRG_ON);
	68	GPCR(CORGI_GPIO_CHRG_UKN) = GPIO_bit(CORGI_GPIO_CHRG_UKN);
	69	}
	70	}
	71
	72	static void corgi_discharge(int on)
	73	{
	74	if (on)
	75	GPSR(CORGI_GPIO_DISCHARGE_ON) = GPIO_bit(CORGI_GPIO_DISCHARGE_ON);
	76	else
	77	GPCR(CORGI_GPIO_DISCHARGE_ON) = GPIO_bit(CORGI_GPIO_DISCHARGE_ON);
	78	}
	79
	80	static void corgi_presuspend(void)
	81	{
	82	int i;
	83	unsigned long wakeup_mask;
	84
	85	/* charging , so CHARGE_ON bit is HIGH during OFF. */
	86	if (READ_GPIO_BIT(CORGI_GPIO_CHRG_ON))
	87	PGSR1 \|= GPIO_bit(CORGI_GPIO_CHRG_ON);
	88	else
	89	PGSR1 &= ~GPIO_bit(CORGI_GPIO_CHRG_ON);
	90
	91	if (READ_GPIO_BIT(CORGI_GPIO_LED_ORANGE))
	92	PGSR0 \|= GPIO_bit(CORGI_GPIO_LED_ORANGE);
	93	else
	94	PGSR0 &= ~GPIO_bit(CORGI_GPIO_LED_ORANGE);
	95
	96	if (READ_GPIO_BIT(CORGI_GPIO_CHRG_UKN))
	97	PGSR1 \|= GPIO_bit(CORGI_GPIO_CHRG_UKN);
	98	else
	99	PGSR1 &= ~GPIO_bit(CORGI_GPIO_CHRG_UKN);
	100
	101	/* Resume on keyboard power key */
	102	PGSR2 = (PGSR2 & ~CORGI_GPIO_ALL_STROBE_BIT) \| CORGI_GPIO_STROBE_BIT(0);
	103
	104	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);
	105
	106	if (!machine_is_corgi())
	107	wakeup_mask \|= GPIO_bit(CORGI_GPIO_MAIN_BAT_LOW);
	108
	109	PWER = wakeup_mask \| PWER_RTC;
110	PRER = wakeup_mask;
111	PFER = wakeup_mask;
112
113	for (i = 0; i <=15; i++) {
114	if (PRER & PFER & GPIO_bit(i)) {
115	if (GPLR0 & GPIO_bit(i) )
116	PRER &= ~GPIO_bit(i);
117	else
118	PFER &= ~GPIO_bit(i);
119	}
120	}
121	}
122
123	static void corgi_postsuspend(void)
124	{
125	}
126
127	/*
128	* Check what brought us out of the suspend.
129	* Return: 0 to sleep, otherwise wake
130	*/
131	static int corgi_should_wakeup(unsigned int resume_on_alarm)
132	{
133	int is_resume = 0;
134
135	dev_dbg(sharpsl_pm.dev, "GPLR0 = %x,%x\n", GPLR0, PEDR);
136
137	if ((PEDR & GPIO_bit(CORGI_GPIO_AC_IN))) {
b7557de4	138	if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
d72f25b0 RP	139	/* charge on */
	140	dev_dbg(sharpsl_pm.dev, "ac insert\n");
	141	sharpsl_pm.flags \|= SHARPSL_DO_OFFLINE_CHRG;
	142	} else {
	143	/* charge off */
	144	dev_dbg(sharpsl_pm.dev, "ac remove\n");
b7557de4 RP	145	sharpsl_pm_led(SHARPSL_LED_OFF);
b7557de4 RP	146	sharpsl_pm.machinfo->charge(0);
d72f25b0 RP	147	sharpsl_pm.charge_mode = CHRG_OFF;
	148	}
	149	}
	150
	151	if ((PEDR & GPIO_bit(CORGI_GPIO_CHRG_FULL)))
	152	dev_dbg(sharpsl_pm.dev, "Charge full interrupt\n");
	153
	154	if (PEDR & GPIO_bit(CORGI_GPIO_KEY_INT))
	155	is_resume \|= GPIO_bit(CORGI_GPIO_KEY_INT);
	156
	157	if (PEDR & GPIO_bit(CORGI_GPIO_WAKEUP))
	158	is_resume \|= GPIO_bit(CORGI_GPIO_WAKEUP);
	159
	160	if (resume_on_alarm && (PEDR & PWER_RTC))
	161	is_resume \|= PWER_RTC;
	162
	163	dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume);
	164	return is_resume;
	165	}
	166
	167	static unsigned long corgi_charger_wakeup(void)
	168	{
	169	return ~GPLR0 & ( GPIO_bit(CORGI_GPIO_AC_IN) \| GPIO_bit(CORGI_GPIO_KEY_INT) \| GPIO_bit(CORGI_GPIO_WAKEUP) );
	170	}
	171
b7557de4	172	unsigned long corgipm_read_devdata(int type)
d72f25b0	173	{
b7557de4 RP	174	switch(type) {
	175	case SHARPSL_STATUS_ACIN:
	176	return ((GPLR(CORGI_GPIO_AC_IN) & GPIO_bit(CORGI_GPIO_AC_IN)) != 0);
	177	case SHARPSL_STATUS_LOCK:
	178	return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batlock);
	179	case SHARPSL_STATUS_CHRGFULL:
	180	return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batfull);
	181	case SHARPSL_STATUS_FATAL:
	182	return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_fatal);
	183	case SHARPSL_ACIN_VOLT:
	184	return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT);
	185	case SHARPSL_BATT_TEMP:
	186	return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP);
	187	case SHARPSL_BATT_VOLT:
	188	default:
	189	return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT);
	190	}
d72f25b0 RP	191	}
	192
	193	static struct sharpsl_charger_machinfo corgi_pm_machinfo = {
	194	.init = corgi_charger_init,
b7557de4	195	.exit = sharpsl_pm_pxa_remove,
d72f25b0 RP	196	.gpio_batlock = CORGI_GPIO_BAT_COVER,
	197	.gpio_acin = CORGI_GPIO_AC_IN,
	198	.gpio_batfull = CORGI_GPIO_CHRG_FULL,
d72f25b0 RP	199	.discharge = corgi_discharge,
d72f25b0 RP	200	.charge = corgi_charge,
d72f25b0 RP	201	.measure_temp = corgi_measure_temp,
	202	.presuspend = corgi_presuspend,
	203	.postsuspend = corgi_postsuspend,
b7557de4	204	.read_devdata = corgipm_read_devdata,
d72f25b0 RP	205	.charger_wakeup = corgi_charger_wakeup,
d72f25b0 RP	206	.should_wakeup = corgi_should_wakeup,
02a8e769	207	#ifdef CONFIG_BACKLIGHT_CORGI
f8703dc8	208	.backlight_limit = corgibl_limit_intensity,
02a8e769	209	#endif
f8703dc8 RP	210	.charge_on_volt = SHARPSL_CHARGE_ON_VOLT,
	211	.charge_on_temp = SHARPSL_CHARGE_ON_TEMP,
	212	.charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
	213	.charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW,
	214	.fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT,
	215	.fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT,
	216	.bat_levels = 40,
	217	.bat_levels_noac = spitz_battery_levels_noac,
	218	.bat_levels_acin = spitz_battery_levels_acin,
d72f25b0 RP	219	.status_high_acin = 188,
	220	.status_low_acin = 178,
	221	.status_high_noac = 185,
	222	.status_low_noac = 175,
	223	};
	224
	225	static struct platform_device *corgipm_device;
	226
	227	static int __devinit corgipm_init(void)
	228	{
	229	int ret;
	230
043fbc09 DB	231	if (!machine_is_corgi() && !machine_is_shepherd()
	232	&& !machine_is_husky())
	233	return -ENODEV;
	234
d72f25b0 RP	235	corgipm_device = platform_device_alloc("sharpsl-pm", -1);
	236	if (!corgipm_device)
	237	return -ENOMEM;
	238
f8703dc8 RP	239	if (!machine_is_corgi())
	240	corgi_pm_machinfo.batfull_irq = 1;
	241
d72f25b0 RP	242	corgipm_device->dev.platform_data = &corgi_pm_machinfo;
	243	ret = platform_device_add(corgipm_device);
	244
	245	if (ret)
	246	platform_device_put(corgipm_device);
	247
	248	return ret;
	249	}
	250
	251	static void corgipm_exit(void)
	252	{
	253	platform_device_unregister(corgipm_device);
	254	}
	255
	256	module_init(corgipm_init);
	257	module_exit(corgipm_exit);