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

/*
 * Battery and Power Management code for the Sharp SL-Cxx00
 *
 * 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/spitz.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 int spitz_last_ac_status;

static void spitz_charger_init(void)
{
	pxa_gpio_mode(SPITZ_GPIO_KEY_INT | GPIO_IN);
	pxa_gpio_mode(SPITZ_GPIO_SYNC | GPIO_IN);
	sharpsl_pm_pxa_init();
}

static void spitz_measure_temp(int on)
{
	gpio_set_value(SPITZ_GPIO_ADC_TEMP_ON, on);
}

static void spitz_charge(int on)
{
	if (on) {
		if (sharpsl_pm.flags & SHARPSL_SUSPENDED) {
			gpio_set_value(SPITZ_GPIO_JK_B, 1);
			gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
		} else {
			gpio_set_value(SPITZ_GPIO_JK_B, 0);
			gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
		}
	} else {
		gpio_set_value(SPITZ_GPIO_JK_B, 0);
		gpio_set_value(SPITZ_GPIO_CHRG_ON, 1);
	}
}

static void spitz_discharge(int on)
{
	gpio_set_value(SPITZ_GPIO_JK_A, on);
}

/* HACK - For unknown reasons, accurate voltage readings are only made with a load
   on the power bus which the green led on spitz provides */
static void spitz_discharge1(int on)
{
	gpio_set_value(SPITZ_GPIO_LED_GREEN, on);
}

static void spitz_presuspend(void)
{
	spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);

	/* GPIO Sleep Register */
	PGSR0 = 0x00144018;
	PGSR1 = 0x00EF0000;
	if (machine_is_akita()) {
		PGSR2 = 0x2121C000;
		PGSR3 = 0x00600400;
	} else {
		PGSR2 = 0x0121C000;
		PGSR3 = 0x00600000;
	}

	PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
	PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
	PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
	PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
	PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0);

	pxa_gpio_mode(GPIO18_RDY|GPIO_OUT | GPIO_DFLT_HIGH);

	PRER = GPIO_bit(SPITZ_GPIO_KEY_INT);
	PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET);
	PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC;
	PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET);
	PKSR = 0xffffffff; // clear

	/* nRESET_OUT Disable */
	PSLR |= PSLR_SL_ROD;

	/* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
	PCFR = PCFR_GPR_EN | PCFR_OPDE;
}

static void spitz_postsuspend(void)
{
	pxa_gpio_mode(GPIO18_RDY_MD);
	pxa_gpio_mode(10 | GPIO_IN);
}

static int spitz_should_wakeup(unsigned int resume_on_alarm)
{
	int is_resume = 0;
	int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);

	if (spitz_last_ac_status != acin) {
		if (acin) {
			/* charge on */
			sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
			dev_dbg(sharpsl_pm.dev, "AC Inserted\n");
		} else {
			/* charge off */
			dev_dbg(sharpsl_pm.dev, "AC Removed\n");
			sharpsl_pm_led(SHARPSL_LED_OFF);
			sharpsl_pm.machinfo->charge(0);
			sharpsl_pm.charge_mode = CHRG_OFF;
		}
		spitz_last_ac_status = acin;
		/* Return to suspend as this must be what we were woken for */
		return 0;
	}

	if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT))
		is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT);

	if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC))
		is_resume |= GPIO_bit(SPITZ_GPIO_SYNC);

	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 spitz_charger_wakeup(void)
{
	return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) | (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC));
}

unsigned long spitzpm_read_devdata(int type)
{
	switch(type) {
	case SHARPSL_STATUS_ACIN:
		return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_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);
	}
}

struct sharpsl_charger_machinfo spitz_pm_machinfo = {
	.init             = spitz_charger_init,
	.exit             = sharpsl_pm_pxa_remove,
	.gpio_batlock     = SPITZ_GPIO_BAT_COVER,
	.gpio_acin        = SPITZ_GPIO_AC_IN,
	.gpio_batfull     = SPITZ_GPIO_CHRG_FULL,
	.batfull_irq	  = 1,
	.gpio_fatal       = SPITZ_GPIO_FATAL_BAT,
	.discharge        = spitz_discharge,
	.discharge1       = spitz_discharge1,
	.charge           = spitz_charge,
	.measure_temp     = spitz_measure_temp,
	.presuspend       = spitz_presuspend,
	.postsuspend      = spitz_postsuspend,
	.read_devdata     = spitzpm_read_devdata,
	.charger_wakeup   = spitz_charger_wakeup,
	.should_wakeup    = spitz_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 *spitzpm_device;

static int __devinit spitzpm_init(void)
{
	int ret;

	if (!machine_is_spitz() && !machine_is_akita()
			&& !machine_is_borzoi())
		return -ENODEV;

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

	spitzpm_device->dev.platform_data = &spitz_pm_machinfo;
	ret = platform_device_add(spitzpm_device);

	if (ret)
		platform_device_put(spitzpm_device);

	return ret;
}

static void spitzpm_exit(void)
{
 	platform_device_unregister(spitzpm_device);
}

module_init(spitzpm_init);
module_exit(spitzpm_exit);
Commit	Line	Data
e8b6f7f4 RP	1	/*
	2	* Battery and Power Management code for the Sharp SL-Cxx00
	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
e8b6f7f4 RP	21	#include <asm/irq.h>
e8b6f7f4 RP	22	#include <asm/mach-types.h>
a09e64fb	23	#include <mach/hardware.h>
e8b6f7f4	24
a09e64fb RK	25	#include <mach/sharpsl.h>
	26	#include <mach/spitz.h>
	27	#include <mach/pxa-regs.h>
	28	#include <mach/pxa2xx-regs.h>
	29	#include <mach/pxa2xx-gpio.h>
e8b6f7f4 RP	30	#include "sharpsl.h"
e8b6f7f4 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
e8b6f7f4 RP	39	static int spitz_last_ac_status;
	40
	41	static void spitz_charger_init(void)
	42	{
	43	pxa_gpio_mode(SPITZ_GPIO_KEY_INT \| GPIO_IN);
	44	pxa_gpio_mode(SPITZ_GPIO_SYNC \| GPIO_IN);
b7557de4	45	sharpsl_pm_pxa_init();
e8b6f7f4 RP	46	}
	47
	48	static void spitz_measure_temp(int on)
	49	{
fff14720	50	gpio_set_value(SPITZ_GPIO_ADC_TEMP_ON, on);
e8b6f7f4 RP	51	}
	52
	53	static void spitz_charge(int on)
	54	{
	55	if (on) {
	56	if (sharpsl_pm.flags & SHARPSL_SUSPENDED) {
fff14720 EM	57	gpio_set_value(SPITZ_GPIO_JK_B, 1);
fff14720 EM	58	gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
e8b6f7f4	59	} else {
fff14720 EM	60	gpio_set_value(SPITZ_GPIO_JK_B, 0);
fff14720 EM	61	gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
e8b6f7f4 RP	62	}
e8b6f7f4 RP	63	} else {
fff14720 EM	64	gpio_set_value(SPITZ_GPIO_JK_B, 0);
fff14720 EM	65	gpio_set_value(SPITZ_GPIO_CHRG_ON, 1);
e8b6f7f4 RP	66	}
	67	}
	68
	69	static void spitz_discharge(int on)
	70	{
fff14720	71	gpio_set_value(SPITZ_GPIO_JK_A, on);
e8b6f7f4 RP	72	}
	73
	74	/* HACK - For unknown reasons, accurate voltage readings are only made with a load
	75	on the power bus which the green led on spitz provides */
	76	static void spitz_discharge1(int on)
	77	{
fff14720	78	gpio_set_value(SPITZ_GPIO_LED_GREEN, on);
e8b6f7f4 RP	79	}
	80
	81	static void spitz_presuspend(void)
	82	{
b7557de4	83	spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
e8b6f7f4 RP	84
	85	/* GPIO Sleep Register */
	86	PGSR0 = 0x00144018;
	87	PGSR1 = 0x00EF0000;
	88	if (machine_is_akita()) {
	89	PGSR2 = 0x2121C000;
	90	PGSR3 = 0x00600400;
	91	} else {
	92	PGSR2 = 0x0121C000;
	93	PGSR3 = 0x00600000;
	94	}
	95
	96	PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
	97	PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
	98	PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
	99	PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
	100	PGSR2 \|= GPIO_bit(SPITZ_GPIO_KEY_STROBE0);
	101
	102	pxa_gpio_mode(GPIO18_RDY\|GPIO_OUT \| GPIO_DFLT_HIGH);
	103
	104	PRER = GPIO_bit(SPITZ_GPIO_KEY_INT);
	105	PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) \| GPIO_bit(SPITZ_GPIO_RESET);
	106	PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) \| GPIO_bit(SPITZ_GPIO_RESET) \| PWER_RTC;
	107	PKWR = GPIO_bit(SPITZ_GPIO_SYNC) \| GPIO_bit(SPITZ_GPIO_KEY_INT) \| GPIO_bit(SPITZ_GPIO_RESET);
	108	PKSR = 0xffffffff; // clear
	109
	110	/* nRESET_OUT Disable */
	111	PSLR \|= PSLR_SL_ROD;
	112
e8b6f7f4 RP	113	/* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
	114	PCFR = PCFR_GPR_EN \| PCFR_OPDE;
	115	}
	116
	117	static void spitz_postsuspend(void)
	118	{
	119	pxa_gpio_mode(GPIO18_RDY_MD);
	120	pxa_gpio_mode(10 \| GPIO_IN);
	121	}
	122
	123	static int spitz_should_wakeup(unsigned int resume_on_alarm)
	124	{
	125	int is_resume = 0;
b7557de4	126	int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
e8b6f7f4 RP	127
	128	if (spitz_last_ac_status != acin) {
	129	if (acin) {
	130	/* charge on */
	131	sharpsl_pm.flags \|= SHARPSL_DO_OFFLINE_CHRG;
	132	dev_dbg(sharpsl_pm.dev, "AC Inserted\n");
	133	} else {
	134	/* charge off */
	135	dev_dbg(sharpsl_pm.dev, "AC Removed\n");
b7557de4 RP	136	sharpsl_pm_led(SHARPSL_LED_OFF);
b7557de4 RP	137	sharpsl_pm.machinfo->charge(0);
e8b6f7f4 RP	138	sharpsl_pm.charge_mode = CHRG_OFF;
	139	}
	140	spitz_last_ac_status = acin;
	141	/* Return to suspend as this must be what we were woken for */
	142	return 0;
	143	}
	144
	145	if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT))
	146	is_resume \|= GPIO_bit(SPITZ_GPIO_KEY_INT);
	147
	148	if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC))
	149	is_resume \|= GPIO_bit(SPITZ_GPIO_SYNC);
	150
	151	if (resume_on_alarm && (PEDR & PWER_RTC))
	152	is_resume \|= PWER_RTC;
	153
	154	dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume);
	155	return is_resume;
	156	}
	157
	158	static unsigned long spitz_charger_wakeup(void)
	159	{
	160	return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) \| (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC));
	161	}
	162
b7557de4	163	unsigned long spitzpm_read_devdata(int type)
e8b6f7f4	164	{
b7557de4 RP	165	switch(type) {
	166	case SHARPSL_STATUS_ACIN:
	167	return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_GPIO_AC_IN)) != 0);
	168	case SHARPSL_STATUS_LOCK:
	169	return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batlock);
	170	case SHARPSL_STATUS_CHRGFULL:
	171	return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batfull);
	172	case SHARPSL_STATUS_FATAL:
	173	return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_fatal);
	174	case SHARPSL_ACIN_VOLT:
	175	return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT);
	176	case SHARPSL_BATT_TEMP:
	177	return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP);
	178	case SHARPSL_BATT_VOLT:
	179	default:
	180	return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT);
	181	}
e8b6f7f4 RP	182	}
	183
	184	struct sharpsl_charger_machinfo spitz_pm_machinfo = {
	185	.init = spitz_charger_init,
b7557de4	186	.exit = sharpsl_pm_pxa_remove,
e8b6f7f4 RP	187	.gpio_batlock = SPITZ_GPIO_BAT_COVER,
	188	.gpio_acin = SPITZ_GPIO_AC_IN,
	189	.gpio_batfull = SPITZ_GPIO_CHRG_FULL,
f8703dc8	190	.batfull_irq = 1,
e8b6f7f4	191	.gpio_fatal = SPITZ_GPIO_FATAL_BAT,
e8b6f7f4 RP	192	.discharge = spitz_discharge,
	193	.discharge1 = spitz_discharge1,
	194	.charge = spitz_charge,
e8b6f7f4 RP	195	.measure_temp = spitz_measure_temp,
	196	.presuspend = spitz_presuspend,
	197	.postsuspend = spitz_postsuspend,
b7557de4	198	.read_devdata = spitzpm_read_devdata,
e8b6f7f4 RP	199	.charger_wakeup = spitz_charger_wakeup,
e8b6f7f4 RP	200	.should_wakeup = spitz_should_wakeup,
02a8e769	201	#ifdef CONFIG_BACKLIGHT_CORGI
f8703dc8	202	.backlight_limit = corgibl_limit_intensity,
02a8e769	203	#endif
f8703dc8 RP	204	.charge_on_volt = SHARPSL_CHARGE_ON_VOLT,
	205	.charge_on_temp = SHARPSL_CHARGE_ON_TEMP,
	206	.charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
	207	.charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW,
	208	.fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT,
	209	.fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT,
e8b6f7f4 RP	210	.bat_levels = 40,
	211	.bat_levels_noac = spitz_battery_levels_noac,
	212	.bat_levels_acin = spitz_battery_levels_acin,
	213	.status_high_acin = 188,
	214	.status_low_acin = 178,
	215	.status_high_noac = 185,
	216	.status_low_noac = 175,
	217	};
	218
	219	static struct platform_device *spitzpm_device;
	220
	221	static int __devinit spitzpm_init(void)
	222	{
	223	int ret;
	224
5806d8ab DB	225	if (!machine_is_spitz() && !machine_is_akita()
	226	&& !machine_is_borzoi())
	227	return -ENODEV;
	228
e8b6f7f4 RP	229	spitzpm_device = platform_device_alloc("sharpsl-pm", -1);
	230	if (!spitzpm_device)
	231	return -ENOMEM;
	232
	233	spitzpm_device->dev.platform_data = &spitz_pm_machinfo;
	234	ret = platform_device_add(spitzpm_device);
	235
	236	if (ret)
	237	platform_device_put(spitzpm_device);
	238
	239	return ret;
	240	}
	241
	242	static void spitzpm_exit(void)
	243	{
	244	platform_device_unregister(spitzpm_device);
	245	}
	246
	247	module_init(spitzpm_init);
	248	module_exit(spitzpm_exit);