| /* |
| * 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 <asm/arch/pxa2xx-regs.h> |
| #include <asm/arch/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 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, |
| #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 *corgipm_device; |
| |
| static int __devinit corgipm_init(void) |
| { |
| int ret; |
| |
| if (!machine_is_corgi() && !machine_is_shepherd() |
| && !machine_is_husky()) |
| return -ENODEV; |
| |
| 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); |