[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 <asm/hardware/scoop.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)
{
	if (on)
		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON);
	else
		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON);
}

static void spitz_charge(int on)
{
	if (on) {
		if (sharpsl_pm.flags & SHARPSL_SUSPENDED) {
			set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B);
			reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON);
		} else {
			reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B);
			reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON);
		}
	} else {
		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B);
		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON);
	}
}

static void spitz_discharge(int on)
{
	if (on)
		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A);
	else
		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A);
}

/* 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)
{
	if (on)
		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
	else
		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
}

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 RP	24	#include <asm/hardware/scoop.h>
e8b6f7f4 RP	25
a09e64fb RK	26	#include <mach/sharpsl.h>
	27	#include <mach/spitz.h>
	28	#include <mach/pxa-regs.h>
	29	#include <mach/pxa2xx-regs.h>
	30	#include <mach/pxa2xx-gpio.h>
e8b6f7f4 RP	31	#include "sharpsl.h"
e8b6f7f4 RP	32
f8703dc8 RP	33	#define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */
	34	#define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */
	35	#define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */
	36	#define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */
	37	#define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */
	38	#define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */
	39
e8b6f7f4 RP	40	static int spitz_last_ac_status;
	41
	42	static void spitz_charger_init(void)
	43	{
	44	pxa_gpio_mode(SPITZ_GPIO_KEY_INT \| GPIO_IN);
	45	pxa_gpio_mode(SPITZ_GPIO_SYNC \| GPIO_IN);
b7557de4	46	sharpsl_pm_pxa_init();
e8b6f7f4 RP	47	}
	48
	49	static void spitz_measure_temp(int on)
	50	{
	51	if (on)
	52	set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON);
	53	else
	54	reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON);
	55	}
	56
	57	static void spitz_charge(int on)
	58	{
	59	if (on) {
	60	if (sharpsl_pm.flags & SHARPSL_SUSPENDED) {
	61	set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B);
	62	reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON);
	63	} else {
	64	reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B);
	65	reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON);
	66	}
	67	} else {
	68	reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B);
	69	set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON);
	70	}
	71	}
	72
	73	static void spitz_discharge(int on)
	74	{
	75	if (on)
	76	set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A);
	77	else
	78	reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A);
	79	}
	80
	81	/* HACK - For unknown reasons, accurate voltage readings are only made with a load
	82	on the power bus which the green led on spitz provides */
	83	static void spitz_discharge1(int on)
	84	{
	85	if (on)
	86	set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
	87	else
	88	reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
	89	}
	90
	91	static void spitz_presuspend(void)
	92	{
b7557de4	93	spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
e8b6f7f4 RP	94
	95	/* GPIO Sleep Register */
	96	PGSR0 = 0x00144018;
	97	PGSR1 = 0x00EF0000;
	98	if (machine_is_akita()) {
	99	PGSR2 = 0x2121C000;
	100	PGSR3 = 0x00600400;
	101	} else {
	102	PGSR2 = 0x0121C000;
	103	PGSR3 = 0x00600000;
	104	}
	105
	106	PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
	107	PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
	108	PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
	109	PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
	110	PGSR2 \|= GPIO_bit(SPITZ_GPIO_KEY_STROBE0);
	111
	112	pxa_gpio_mode(GPIO18_RDY\|GPIO_OUT \| GPIO_DFLT_HIGH);
	113
	114	PRER = GPIO_bit(SPITZ_GPIO_KEY_INT);
	115	PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) \| GPIO_bit(SPITZ_GPIO_RESET);
	116	PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) \| GPIO_bit(SPITZ_GPIO_RESET) \| PWER_RTC;
	117	PKWR = GPIO_bit(SPITZ_GPIO_SYNC) \| GPIO_bit(SPITZ_GPIO_KEY_INT) \| GPIO_bit(SPITZ_GPIO_RESET);
	118	PKSR = 0xffffffff; // clear
	119
	120	/* nRESET_OUT Disable */
	121	PSLR \|= PSLR_SL_ROD;
	122
e8b6f7f4 RP	123	/* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
	124	PCFR = PCFR_GPR_EN \| PCFR_OPDE;
	125	}
	126
	127	static void spitz_postsuspend(void)
	128	{
	129	pxa_gpio_mode(GPIO18_RDY_MD);
	130	pxa_gpio_mode(10 \| GPIO_IN);
	131	}
	132
	133	static int spitz_should_wakeup(unsigned int resume_on_alarm)
	134	{
	135	int is_resume = 0;
b7557de4	136	int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
e8b6f7f4 RP	137
	138	if (spitz_last_ac_status != acin) {
	139	if (acin) {
	140	/* charge on */
	141	sharpsl_pm.flags \|= SHARPSL_DO_OFFLINE_CHRG;
	142	dev_dbg(sharpsl_pm.dev, "AC Inserted\n");
	143	} else {
	144	/* charge off */
	145	dev_dbg(sharpsl_pm.dev, "AC Removed\n");
b7557de4 RP	146	sharpsl_pm_led(SHARPSL_LED_OFF);
b7557de4 RP	147	sharpsl_pm.machinfo->charge(0);
e8b6f7f4 RP	148	sharpsl_pm.charge_mode = CHRG_OFF;
	149	}
	150	spitz_last_ac_status = acin;
	151	/* Return to suspend as this must be what we were woken for */
	152	return 0;
	153	}
	154
	155	if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT))
	156	is_resume \|= GPIO_bit(SPITZ_GPIO_KEY_INT);
	157
	158	if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC))
	159	is_resume \|= GPIO_bit(SPITZ_GPIO_SYNC);
	160
	161	if (resume_on_alarm && (PEDR & PWER_RTC))
	162	is_resume \|= PWER_RTC;
	163
	164	dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume);
	165	return is_resume;
	166	}
	167
	168	static unsigned long spitz_charger_wakeup(void)
	169	{
	170	return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) \| (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC));
	171	}
	172
b7557de4	173	unsigned long spitzpm_read_devdata(int type)
e8b6f7f4	174	{
b7557de4 RP	175	switch(type) {
	176	case SHARPSL_STATUS_ACIN:
	177	return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_GPIO_AC_IN)) != 0);
	178	case SHARPSL_STATUS_LOCK:
	179	return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batlock);
	180	case SHARPSL_STATUS_CHRGFULL:
	181	return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batfull);
	182	case SHARPSL_STATUS_FATAL:
	183	return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_fatal);
	184	case SHARPSL_ACIN_VOLT:
	185	return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT);
	186	case SHARPSL_BATT_TEMP:
	187	return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP);
	188	case SHARPSL_BATT_VOLT:
	189	default:
	190	return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT);
	191	}
e8b6f7f4 RP	192	}
	193
	194	struct sharpsl_charger_machinfo spitz_pm_machinfo = {
	195	.init = spitz_charger_init,
b7557de4	196	.exit = sharpsl_pm_pxa_remove,
e8b6f7f4 RP	197	.gpio_batlock = SPITZ_GPIO_BAT_COVER,
	198	.gpio_acin = SPITZ_GPIO_AC_IN,
	199	.gpio_batfull = SPITZ_GPIO_CHRG_FULL,
f8703dc8	200	.batfull_irq = 1,
e8b6f7f4	201	.gpio_fatal = SPITZ_GPIO_FATAL_BAT,
e8b6f7f4 RP	202	.discharge = spitz_discharge,
	203	.discharge1 = spitz_discharge1,
	204	.charge = spitz_charge,
e8b6f7f4 RP	205	.measure_temp = spitz_measure_temp,
	206	.presuspend = spitz_presuspend,
	207	.postsuspend = spitz_postsuspend,
b7557de4	208	.read_devdata = spitzpm_read_devdata,
e8b6f7f4 RP	209	.charger_wakeup = spitz_charger_wakeup,
e8b6f7f4 RP	210	.should_wakeup = spitz_should_wakeup,
02a8e769	211	#ifdef CONFIG_BACKLIGHT_CORGI
f8703dc8	212	.backlight_limit = corgibl_limit_intensity,
02a8e769	213	#endif
f8703dc8 RP	214	.charge_on_volt = SHARPSL_CHARGE_ON_VOLT,
	215	.charge_on_temp = SHARPSL_CHARGE_ON_TEMP,
	216	.charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
	217	.charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW,
	218	.fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT,
	219	.fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT,
e8b6f7f4 RP	220	.bat_levels = 40,
	221	.bat_levels_noac = spitz_battery_levels_noac,
	222	.bat_levels_acin = spitz_battery_levels_acin,
	223	.status_high_acin = 188,
	224	.status_low_acin = 178,
	225	.status_high_noac = 185,
	226	.status_low_noac = 175,
	227	};
	228
	229	static struct platform_device *spitzpm_device;
	230
	231	static int __devinit spitzpm_init(void)
	232	{
	233	int ret;
	234
5806d8ab DB	235	if (!machine_is_spitz() && !machine_is_akita()
	236	&& !machine_is_borzoi())
	237	return -ENODEV;
	238
e8b6f7f4 RP	239	spitzpm_device = platform_device_alloc("sharpsl-pm", -1);
	240	if (!spitzpm_device)
	241	return -ENOMEM;
	242
	243	spitzpm_device->dev.platform_data = &spitz_pm_machinfo;
	244	ret = platform_device_add(spitzpm_device);
	245
	246	if (ret)
	247	platform_device_put(spitzpm_device);
	248
	249	return ret;
	250	}
	251
	252	static void spitzpm_exit(void)
	253	{
	254	platform_device_unregister(spitzpm_device);
	255	}
	256
	257	module_init(spitzpm_init);
	258	module_exit(spitzpm_exit);