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

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Battery and Power Management code for the Sharp SL-Cxx00
 *
 * Copyright (c) 2005 Richard Purdie
 */

#include <linux/module.h>
#include <linux/stat.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/gpio-pxa.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/apm-emulation.h>
#include <linux/spi/corgi_lcd.h>

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

#include "spitz.h"
#include "pxa27x.h"
#include "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 void spitz_charger_init(void)
{
	gpio_request(SPITZ_GPIO_KEY_INT, "Keyboard Interrupt");
	gpio_direction_input(SPITZ_GPIO_KEY_INT);
	gpio_request(SPITZ_GPIO_SYNC, "Sync");
	gpio_direction_input(SPITZ_GPIO_SYNC);
	gpio_request(SPITZ_GPIO_AC_IN, "Charger Detection");
	gpio_direction_input(SPITZ_GPIO_AC_IN);
	gpio_request(SPITZ_GPIO_ADC_TEMP_ON, "ADC Temp On");
	gpio_direction_output(SPITZ_GPIO_ADC_TEMP_ON, 0);
	gpio_request(SPITZ_GPIO_JK_B, "JK B");
	gpio_direction_output(SPITZ_GPIO_JK_B, 0);
	gpio_request(SPITZ_GPIO_CHRG_ON, "Charger On");
	gpio_direction_output(SPITZ_GPIO_CHRG_ON, 0);
}

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_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, 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)
{
}

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 bool spitz_charger_wakeup(void)
{
	return !gpio_get_value(SPITZ_GPIO_KEY_INT) ||
		gpio_get_value(SPITZ_GPIO_SYNC);
}

static unsigned long spitzpm_read_devdata(int type)
{
	switch (type) {
	case SHARPSL_STATUS_ACIN:
		return !gpio_get_value(SPITZ_GPIO_AC_IN);
	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 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
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
e8b6f7f4 RP	2	/*
	3	* Battery and Power Management code for the Sharp SL-Cxx00
	4	*
	5	* Copyright (c) 2005 Richard Purdie
e8b6f7f4 RP	6	*/
	7
	8	#include <linux/module.h>
	9	#include <linux/stat.h>
	10	#include <linux/init.h>
	11	#include <linux/kernel.h>
	12	#include <linux/delay.h>
158f1e95	13	#include <linux/gpio.h>
e0bf102e	14	#include <linux/gpio-pxa.h>
e8b6f7f4 RP	15	#include <linux/interrupt.h>
e8b6f7f4 RP	16	#include <linux/platform_device.h>
14fca61a	17	#include <linux/apm-emulation.h>
09eadda2	18	#include <linux/spi/corgi_lcd.h>
14fca61a	19
e8b6f7f4 RP	20	#include <asm/irq.h>
e8b6f7f4 RP	21	#include <asm/mach-types.h>
e8b6f7f4	22
726d8c96	23	#include "spitz.h"
4c25c5d2 AB	24	#include "pxa27x.h"
4c25c5d2 AB	25	#include "sharpsl_pm.h"
b6eede11	26
b6eede11	27	#include "generic.h"
e8b6f7f4	28
f8703dc8 RP	29	#define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */
	30	#define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */
	31	#define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */
	32	#define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */
	33	#define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */
	34	#define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */
	35
e8b6f7f4 RP	36	static int spitz_last_ac_status;
	37
	38	static void spitz_charger_init(void)
	39	{
1a45e09a AS	40	gpio_request(SPITZ_GPIO_KEY_INT, "Keyboard Interrupt");
	41	gpio_direction_input(SPITZ_GPIO_KEY_INT);
	42	gpio_request(SPITZ_GPIO_SYNC, "Sync");
	43	gpio_direction_input(SPITZ_GPIO_SYNC);
	44	gpio_request(SPITZ_GPIO_AC_IN, "Charger Detection");
	45	gpio_direction_input(SPITZ_GPIO_AC_IN);
	46	gpio_request(SPITZ_GPIO_ADC_TEMP_ON, "ADC Temp On");
	47	gpio_direction_output(SPITZ_GPIO_ADC_TEMP_ON, 0);
	48	gpio_request(SPITZ_GPIO_JK_B, "JK B");
	49	gpio_direction_output(SPITZ_GPIO_JK_B, 0);
	50	gpio_request(SPITZ_GPIO_CHRG_ON, "Charger On");
	51	gpio_direction_output(SPITZ_GPIO_CHRG_ON, 0);
e8b6f7f4 RP	52	}
	53
	54	static void spitz_measure_temp(int on)
	55	{
fff14720	56	gpio_set_value(SPITZ_GPIO_ADC_TEMP_ON, on);
e8b6f7f4 RP	57	}
	58
	59	static void spitz_charge(int on)
	60	{
	61	if (on) {
	62	if (sharpsl_pm.flags & SHARPSL_SUSPENDED) {
fff14720 EM	63	gpio_set_value(SPITZ_GPIO_JK_B, 1);
fff14720 EM	64	gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
e8b6f7f4	65	} else {
fff14720 EM	66	gpio_set_value(SPITZ_GPIO_JK_B, 0);
fff14720 EM	67	gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
e8b6f7f4 RP	68	}
e8b6f7f4 RP	69	} else {
fff14720 EM	70	gpio_set_value(SPITZ_GPIO_JK_B, 0);
fff14720 EM	71	gpio_set_value(SPITZ_GPIO_CHRG_ON, 1);
e8b6f7f4 RP	72	}
	73	}
	74
	75	static void spitz_discharge(int on)
	76	{
fff14720	77	gpio_set_value(SPITZ_GPIO_JK_A, on);
e8b6f7f4 RP	78	}
	79
	80	/* HACK - For unknown reasons, accurate voltage readings are only made with a load
	81	on the power bus which the green led on spitz provides */
	82	static void spitz_discharge1(int on)
	83	{
fff14720	84	gpio_set_value(SPITZ_GPIO_LED_GREEN, on);
e8b6f7f4 RP	85	}
e8b6f7f4 RP	86
510fcb0d	87	static unsigned long gpio18_config = GPIO18_GPIO;
b6eede11	88
e8b6f7f4 RP	89	static void spitz_presuspend(void)
e8b6f7f4 RP	90	{
b7557de4	91	spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
e8b6f7f4 RP	92
	93	/* GPIO Sleep Register */
	94	PGSR0 = 0x00144018;
	95	PGSR1 = 0x00EF0000;
	96	if (machine_is_akita()) {
	97	PGSR2 = 0x2121C000;
	98	PGSR3 = 0x00600400;
	99	} else {
	100	PGSR2 = 0x0121C000;
	101	PGSR3 = 0x00600000;
	102	}
	103
	104	PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
	105	PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
	106	PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
	107	PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
	108	PGSR2 \|= GPIO_bit(SPITZ_GPIO_KEY_STROBE0);
	109
510fcb0d	110	pxa2xx_mfp_config(&gpio18_config, 1);
b6eede11 EM	111	gpio_request_one(18, GPIOF_OUT_INIT_HIGH, "Unknown");
b6eede11 EM	112	gpio_free(18);
e8b6f7f4 RP	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);
b64b0b76	118	PKSR = 0xffffffff; /* clear */
e8b6f7f4 RP	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	{
e8b6f7f4 RP	129	}
	130
	131	static int spitz_should_wakeup(unsigned int resume_on_alarm)
	132	{
	133	int is_resume = 0;
b7557de4	134	int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
e8b6f7f4 RP	135
	136	if (spitz_last_ac_status != acin) {
	137	if (acin) {
	138	/* charge on */
	139	sharpsl_pm.flags \|= SHARPSL_DO_OFFLINE_CHRG;
	140	dev_dbg(sharpsl_pm.dev, "AC Inserted\n");
	141	} else {
	142	/* charge off */
	143	dev_dbg(sharpsl_pm.dev, "AC Removed\n");
b7557de4 RP	144	sharpsl_pm_led(SHARPSL_LED_OFF);
b7557de4 RP	145	sharpsl_pm.machinfo->charge(0);
e8b6f7f4 RP	146	sharpsl_pm.charge_mode = CHRG_OFF;
	147	}
	148	spitz_last_ac_status = acin;
	149	/* Return to suspend as this must be what we were woken for */
	150	return 0;
	151	}
	152
	153	if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT))
	154	is_resume \|= GPIO_bit(SPITZ_GPIO_KEY_INT);
	155
	156	if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC))
	157	is_resume \|= GPIO_bit(SPITZ_GPIO_SYNC);
	158
	159	if (resume_on_alarm && (PEDR & PWER_RTC))
	160	is_resume \|= PWER_RTC;
	161
b64b0b76	162	dev_dbg(sharpsl_pm.dev, "is_resume: %x\n", is_resume);
e8b6f7f4 RP	163	return is_resume;
	164	}
	165
ca26475b	166	static bool spitz_charger_wakeup(void)
e8b6f7f4	167	{
ca26475b RJ	168	return !gpio_get_value(SPITZ_GPIO_KEY_INT) \|\|
ca26475b RJ	169	gpio_get_value(SPITZ_GPIO_SYNC);
e8b6f7f4 RP	170	}
e8b6f7f4 RP	171
a9ae9c52	172	static unsigned long spitzpm_read_devdata(int type)
e8b6f7f4	173	{
b64b0b76	174	switch (type) {
b7557de4	175	case SHARPSL_STATUS_ACIN:
9bf448c6	176	return !gpio_get_value(SPITZ_GPIO_AC_IN);
b7557de4	177	case SHARPSL_STATUS_LOCK:
05732d7e	178	return gpio_get_value(sharpsl_pm.machinfo->gpio_batlock);
b7557de4	179	case SHARPSL_STATUS_CHRGFULL:
05732d7e	180	return gpio_get_value(sharpsl_pm.machinfo->gpio_batfull);
b7557de4	181	case SHARPSL_STATUS_FATAL:
05732d7e	182	return gpio_get_value(sharpsl_pm.machinfo->gpio_fatal);
b7557de4 RP	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	}
e8b6f7f4 RP	191	}
	192
	193	struct sharpsl_charger_machinfo spitz_pm_machinfo = {
	194	.init = spitz_charger_init,
d48898a3	195	.exit = NULL,
e8b6f7f4 RP	196	.gpio_batlock = SPITZ_GPIO_BAT_COVER,
	197	.gpio_acin = SPITZ_GPIO_AC_IN,
	198	.gpio_batfull = SPITZ_GPIO_CHRG_FULL,
f8703dc8	199	.batfull_irq = 1,
e8b6f7f4	200	.gpio_fatal = SPITZ_GPIO_FATAL_BAT,
e8b6f7f4 RP	201	.discharge = spitz_discharge,
	202	.discharge1 = spitz_discharge1,
	203	.charge = spitz_charge,
e8b6f7f4 RP	204	.measure_temp = spitz_measure_temp,
	205	.presuspend = spitz_presuspend,
	206	.postsuspend = spitz_postsuspend,
b7557de4	207	.read_devdata = spitzpm_read_devdata,
e8b6f7f4 RP	208	.charger_wakeup = spitz_charger_wakeup,
e8b6f7f4 RP	209	.should_wakeup = spitz_should_wakeup,
5cbff960 DB	210	#if defined(CONFIG_LCD_CORGI)
5cbff960 DB	211	.backlight_limit = corgi_lcd_limit_intensity,
02a8e769	212	#endif
f8703dc8 RP	213	.charge_on_volt = SHARPSL_CHARGE_ON_VOLT,
	214	.charge_on_temp = SHARPSL_CHARGE_ON_TEMP,
	215	.charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
	216	.charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW,
	217	.fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT,
	218	.fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT,
e8b6f7f4	219	.bat_levels = 40,
0ba01ebc PM	220	.bat_levels_noac = sharpsl_battery_levels_noac,
0ba01ebc PM	221	.bat_levels_acin = sharpsl_battery_levels_acin,
e8b6f7f4 RP	222	.status_high_acin = 188,
	223	.status_low_acin = 178,
	224	.status_high_noac = 185,
	225	.status_low_noac = 175,
	226	};
	227
	228	static struct platform_device *spitzpm_device;
	229
351a102d	230	static int spitzpm_init(void)
e8b6f7f4 RP	231	{
	232	int ret;
	233
5806d8ab DB	234	if (!machine_is_spitz() && !machine_is_akita()
	235	&& !machine_is_borzoi())
	236	return -ENODEV;
	237
e8b6f7f4 RP	238	spitzpm_device = platform_device_alloc("sharpsl-pm", -1);
	239	if (!spitzpm_device)
	240	return -ENOMEM;
	241
	242	spitzpm_device->dev.platform_data = &spitz_pm_machinfo;
	243	ret = platform_device_add(spitzpm_device);
	244
	245	if (ret)
	246	platform_device_put(spitzpm_device);
	247
	248	return ret;
	249	}
	250
	251	static void spitzpm_exit(void)
	252	{
b64b0b76	253	platform_device_unregister(spitzpm_device);
e8b6f7f4 RP	254	}
	255
	256	module_init(spitzpm_init);
	257	module_exit(spitzpm_exit);