[linux-2.6-block.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/spitz.h>
#include <mach/pxa27x.h>
#include <mach/sharpsl_pm.h>

#include "generic.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 struct gpio spitz_charger_gpios[] = {
	{ SPITZ_GPIO_KEY_INT,	GPIOF_IN, "Keyboard Interrupt" },
	{ SPITZ_GPIO_SYNC,	GPIOF_IN, "Sync" },
	{ SPITZ_GPIO_ADC_TEMP_ON, GPIOF_OUT_INIT_LOW, "ADC Temp On" },
	{ SPITZ_GPIO_JK_B,	  GPIOF_OUT_INIT_LOW, "JK B" },
	{ SPITZ_GPIO_CHRG_ON,	  GPIOF_OUT_INIT_LOW, "Charger On" },
};

static void spitz_charger_init(void)
{
	gpio_request_array(ARRAY_AND_SIZE(spitz_charger_gpios));
}

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 unsigned long gpio18_config[] = {
	GPIO18_RDY,
	GPIO18_GPIO,
};

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);

	pxa2xx_mfp_config(&gpio18_config[0], 1);
	gpio_request_one(18, GPIOF_OUT_INIT_HIGH, "Unknown");
	gpio_free(18);

	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)
{
	pxa2xx_mfp_config(&gpio18_config[1], 1);
}

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 gpio_get_value(sharpsl_pm.machinfo->gpio_batlock);
	case SHARPSL_STATUS_CHRGFULL:
		return gpio_get_value(sharpsl_pm.machinfo->gpio_batfull);
	case SHARPSL_STATUS_FATAL:
		return gpio_get_value(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             = NULL,
	.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,
#if defined(CONFIG_LCD_CORGI)
	.backlight_limit = corgi_lcd_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  = sharpsl_battery_levels_noac,
	.bat_levels_acin  = sharpsl_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	25	#include <mach/spitz.h>
b6eede11	26	#include <mach/pxa27x.h>
04e4ad23	27	#include <mach/sharpsl_pm.h>
b6eede11	28
b6eede11	29	#include "generic.h"
e8b6f7f4	30
f8703dc8 RP	31	#define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */
	32	#define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */
	33	#define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */
	34	#define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */
	35	#define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */
	36	#define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */
	37
e8b6f7f4 RP	38	static int spitz_last_ac_status;
e8b6f7f4 RP	39
b6eede11 EM	40	static struct gpio spitz_charger_gpios[] = {
	41	{ SPITZ_GPIO_KEY_INT, GPIOF_IN, "Keyboard Interrupt" },
	42	{ SPITZ_GPIO_SYNC, GPIOF_IN, "Sync" },
	43	{ SPITZ_GPIO_ADC_TEMP_ON, GPIOF_OUT_INIT_LOW, "ADC Temp On" },
	44	{ SPITZ_GPIO_JK_B, GPIOF_OUT_INIT_LOW, "JK B" },
	45	{ SPITZ_GPIO_CHRG_ON, GPIOF_OUT_INIT_LOW, "Charger On" },
	46	};
	47
e8b6f7f4 RP	48	static void spitz_charger_init(void)
e8b6f7f4 RP	49	{
b6eede11	50	gpio_request_array(ARRAY_AND_SIZE(spitz_charger_gpios));
e8b6f7f4 RP	51	}
	52
	53	static void spitz_measure_temp(int on)
	54	{
fff14720	55	gpio_set_value(SPITZ_GPIO_ADC_TEMP_ON, on);
e8b6f7f4 RP	56	}
	57
	58	static void spitz_charge(int on)
	59	{
	60	if (on) {
	61	if (sharpsl_pm.flags & SHARPSL_SUSPENDED) {
fff14720 EM	62	gpio_set_value(SPITZ_GPIO_JK_B, 1);
fff14720 EM	63	gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
e8b6f7f4	64	} else {
fff14720 EM	65	gpio_set_value(SPITZ_GPIO_JK_B, 0);
fff14720 EM	66	gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
e8b6f7f4 RP	67	}
e8b6f7f4 RP	68	} else {
fff14720 EM	69	gpio_set_value(SPITZ_GPIO_JK_B, 0);
fff14720 EM	70	gpio_set_value(SPITZ_GPIO_CHRG_ON, 1);
e8b6f7f4 RP	71	}
	72	}
	73
	74	static void spitz_discharge(int on)
	75	{
fff14720	76	gpio_set_value(SPITZ_GPIO_JK_A, on);
e8b6f7f4 RP	77	}
	78
	79	/* HACK - For unknown reasons, accurate voltage readings are only made with a load
	80	on the power bus which the green led on spitz provides */
	81	static void spitz_discharge1(int on)
	82	{
fff14720	83	gpio_set_value(SPITZ_GPIO_LED_GREEN, on);
e8b6f7f4 RP	84	}
e8b6f7f4 RP	85
b6eede11 EM	86	static unsigned long gpio18_config[] = {
	87	GPIO18_RDY,
	88	GPIO18_GPIO,
	89	};
	90
e8b6f7f4 RP	91	static void spitz_presuspend(void)
e8b6f7f4 RP	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
b6eede11 EM	112	pxa2xx_mfp_config(&gpio18_config[0], 1);
	113	gpio_request_one(18, GPIOF_OUT_INIT_HIGH, "Unknown");
	114	gpio_free(18);
e8b6f7f4 RP	115
	116	PRER = GPIO_bit(SPITZ_GPIO_KEY_INT);
	117	PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) \| GPIO_bit(SPITZ_GPIO_RESET);
	118	PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) \| GPIO_bit(SPITZ_GPIO_RESET) \| PWER_RTC;
	119	PKWR = GPIO_bit(SPITZ_GPIO_SYNC) \| GPIO_bit(SPITZ_GPIO_KEY_INT) \| GPIO_bit(SPITZ_GPIO_RESET);
b64b0b76	120	PKSR = 0xffffffff; /* clear */
e8b6f7f4 RP	121
	122	/* nRESET_OUT Disable */
	123	PSLR \|= PSLR_SL_ROD;
	124
e8b6f7f4 RP	125	/* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
	126	PCFR = PCFR_GPR_EN \| PCFR_OPDE;
	127	}
	128
	129	static void spitz_postsuspend(void)
	130	{
b6eede11	131	pxa2xx_mfp_config(&gpio18_config[1], 1);
e8b6f7f4 RP	132	}
	133
	134	static int spitz_should_wakeup(unsigned int resume_on_alarm)
	135	{
	136	int is_resume = 0;
b7557de4	137	int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
e8b6f7f4 RP	138
	139	if (spitz_last_ac_status != acin) {
	140	if (acin) {
	141	/* charge on */
	142	sharpsl_pm.flags \|= SHARPSL_DO_OFFLINE_CHRG;
	143	dev_dbg(sharpsl_pm.dev, "AC Inserted\n");
	144	} else {
	145	/* charge off */
	146	dev_dbg(sharpsl_pm.dev, "AC Removed\n");
b7557de4 RP	147	sharpsl_pm_led(SHARPSL_LED_OFF);
b7557de4 RP	148	sharpsl_pm.machinfo->charge(0);
e8b6f7f4 RP	149	sharpsl_pm.charge_mode = CHRG_OFF;
	150	}
	151	spitz_last_ac_status = acin;
	152	/* Return to suspend as this must be what we were woken for */
	153	return 0;
	154	}
	155
	156	if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT))
	157	is_resume \|= GPIO_bit(SPITZ_GPIO_KEY_INT);
	158
	159	if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC))
	160	is_resume \|= GPIO_bit(SPITZ_GPIO_SYNC);
	161
	162	if (resume_on_alarm && (PEDR & PWER_RTC))
	163	is_resume \|= PWER_RTC;
	164
b64b0b76	165	dev_dbg(sharpsl_pm.dev, "is_resume: %x\n", is_resume);
e8b6f7f4 RP	166	return is_resume;
	167	}
	168
	169	static unsigned long spitz_charger_wakeup(void)
	170	{
	171	return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) \| (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC));
	172	}
	173
b7557de4	174	unsigned long spitzpm_read_devdata(int type)
e8b6f7f4	175	{
b64b0b76	176	switch (type) {
b7557de4 RP	177	case SHARPSL_STATUS_ACIN:
	178	return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_GPIO_AC_IN)) != 0);
	179	case SHARPSL_STATUS_LOCK:
05732d7e	180	return gpio_get_value(sharpsl_pm.machinfo->gpio_batlock);
b7557de4	181	case SHARPSL_STATUS_CHRGFULL:
05732d7e	182	return gpio_get_value(sharpsl_pm.machinfo->gpio_batfull);
b7557de4	183	case SHARPSL_STATUS_FATAL:
05732d7e	184	return gpio_get_value(sharpsl_pm.machinfo->gpio_fatal);
b7557de4 RP	185	case SHARPSL_ACIN_VOLT:
	186	return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT);
	187	case SHARPSL_BATT_TEMP:
	188	return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP);
	189	case SHARPSL_BATT_VOLT:
	190	default:
	191	return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT);
	192	}
e8b6f7f4 RP	193	}
	194
	195	struct sharpsl_charger_machinfo spitz_pm_machinfo = {
	196	.init = spitz_charger_init,
d48898a3	197	.exit = NULL,
e8b6f7f4 RP	198	.gpio_batlock = SPITZ_GPIO_BAT_COVER,
	199	.gpio_acin = SPITZ_GPIO_AC_IN,
	200	.gpio_batfull = SPITZ_GPIO_CHRG_FULL,
f8703dc8	201	.batfull_irq = 1,
e8b6f7f4	202	.gpio_fatal = SPITZ_GPIO_FATAL_BAT,
e8b6f7f4 RP	203	.discharge = spitz_discharge,
	204	.discharge1 = spitz_discharge1,
	205	.charge = spitz_charge,
e8b6f7f4 RP	206	.measure_temp = spitz_measure_temp,
	207	.presuspend = spitz_presuspend,
	208	.postsuspend = spitz_postsuspend,
b7557de4	209	.read_devdata = spitzpm_read_devdata,
e8b6f7f4 RP	210	.charger_wakeup = spitz_charger_wakeup,
e8b6f7f4 RP	211	.should_wakeup = spitz_should_wakeup,
5cbff960 DB	212	#if defined(CONFIG_LCD_CORGI)
5cbff960 DB	213	.backlight_limit = corgi_lcd_limit_intensity,
02a8e769	214	#endif
f8703dc8 RP	215	.charge_on_volt = SHARPSL_CHARGE_ON_VOLT,
	216	.charge_on_temp = SHARPSL_CHARGE_ON_TEMP,
	217	.charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
	218	.charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW,
	219	.fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT,
	220	.fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT,
e8b6f7f4	221	.bat_levels = 40,
0ba01ebc PM	222	.bat_levels_noac = sharpsl_battery_levels_noac,
0ba01ebc PM	223	.bat_levels_acin = sharpsl_battery_levels_acin,
e8b6f7f4 RP	224	.status_high_acin = 188,
	225	.status_low_acin = 178,
	226	.status_high_noac = 185,
	227	.status_low_noac = 175,
	228	};
	229
	230	static struct platform_device *spitzpm_device;
	231
	232	static int __devinit spitzpm_init(void)
	233	{
	234	int ret;
	235
5806d8ab DB	236	if (!machine_is_spitz() && !machine_is_akita()
	237	&& !machine_is_borzoi())
	238	return -ENODEV;
	239
e8b6f7f4 RP	240	spitzpm_device = platform_device_alloc("sharpsl-pm", -1);
	241	if (!spitzpm_device)
	242	return -ENOMEM;
	243
	244	spitzpm_device->dev.platform_data = &spitz_pm_machinfo;
	245	ret = platform_device_add(spitzpm_device);
	246
	247	if (ret)
	248	platform_device_put(spitzpm_device);
	249
	250	return ret;
	251	}
	252
	253	static void spitzpm_exit(void)
	254	{
b64b0b76	255	platform_device_unregister(spitzpm_device);
e8b6f7f4 RP	256	}
	257
	258	module_init(spitzpm_init);
	259	module_exit(spitzpm_exit);