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[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [arch/] [arm/] [mach-pxa/] [corgi_pm.c] - Rev 17
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/* * 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 <asm/hardware.h> #include <asm/hardware/scoop.h> #include <asm/arch/sharpsl.h> #include <asm/arch/corgi.h> #include <asm/arch/pxa-regs.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, .backlight_limit = corgibl_limit_intensity, .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; 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);
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