From c07f87f22ecc94201893b7a25430b7f5d5fd6de8 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Tue, 24 Mar 2009 15:30:07 +0000 Subject: [ARM] VIC: Add power management device Add power management support to the VIC by registering each VIC as a system device to get suspend/resume events going. Since the VIC registeration is done early, we need to record the VICs in a static array which is used to add the system devices later once the initcalls are run. This means there is now a configuration value for the number of VICs in the system. Signed-off-by: Ben Dooks --- arch/arm/common/Kconfig | 7 ++ arch/arm/common/vic.c | 221 ++++++++++++++++++++++++++++++++++++++++++++++-- 2 files changed, 221 insertions(+), 7 deletions(-) (limited to 'arch/arm/common') diff --git a/arch/arm/common/Kconfig b/arch/arm/common/Kconfig index a2cd9beaf37d..38518d450bc0 100644 --- a/arch/arm/common/Kconfig +++ b/arch/arm/common/Kconfig @@ -4,6 +4,13 @@ config ARM_GIC config ARM_VIC bool +config ARM_VIC_NR + int + default 2 + help + The maximum number of VICs available in the system, for + power management. + config ICST525 bool diff --git a/arch/arm/common/vic.c b/arch/arm/common/vic.c index b2a781d9ce05..887c6eb3a18a 100644 --- a/arch/arm/common/vic.c +++ b/arch/arm/common/vic.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include @@ -39,11 +40,219 @@ static void vic_unmask_irq(unsigned int irq) writel(1 << irq, base + VIC_INT_ENABLE); } +/** + * vic_init2 - common initialisation code + * @base: Base of the VIC. + * + * Common initialisation code for registeration + * and resume. +*/ +static void vic_init2(void __iomem *base) +{ + int i; + + for (i = 0; i < 16; i++) { + void __iomem *reg = base + VIC_VECT_CNTL0 + (i * 4); + writel(VIC_VECT_CNTL_ENABLE | i, reg); + } + + writel(32, base + VIC_PL190_DEF_VECT_ADDR); +} + +#if defined(CONFIG_PM) +/** + * struct vic_device - VIC PM device + * @sysdev: The system device which is registered. + * @irq: The IRQ number for the base of the VIC. + * @base: The register base for the VIC. + * @resume_sources: A bitmask of interrupts for resume. + * @resume_irqs: The IRQs enabled for resume. + * @int_select: Save for VIC_INT_SELECT. + * @int_enable: Save for VIC_INT_ENABLE. + * @soft_int: Save for VIC_INT_SOFT. + * @protect: Save for VIC_PROTECT. + */ +struct vic_device { + struct sys_device sysdev; + + void __iomem *base; + int irq; + u32 resume_sources; + u32 resume_irqs; + u32 int_select; + u32 int_enable; + u32 soft_int; + u32 protect; +}; + +/* we cannot allocate memory when VICs are initially registered */ +static struct vic_device vic_devices[CONFIG_ARM_VIC_NR]; + +static inline struct vic_device *to_vic(struct sys_device *sys) +{ + return container_of(sys, struct vic_device, sysdev); +} + +static int vic_id; + +static int vic_class_resume(struct sys_device *dev) +{ + struct vic_device *vic = to_vic(dev); + void __iomem *base = vic->base; + + printk(KERN_DEBUG "%s: resuming vic at %p\n", __func__, base); + + /* re-initialise static settings */ + vic_init2(base); + + writel(vic->int_select, base + VIC_INT_SELECT); + writel(vic->protect, base + VIC_PROTECT); + + /* set the enabled ints and then clear the non-enabled */ + writel(vic->int_enable, base + VIC_INT_ENABLE); + writel(~vic->int_enable, base + VIC_INT_ENABLE_CLEAR); + + /* and the same for the soft-int register */ + + writel(vic->soft_int, base + VIC_INT_SOFT); + writel(~vic->soft_int, base + VIC_INT_SOFT_CLEAR); + + return 0; +} + +static int vic_class_suspend(struct sys_device *dev, pm_message_t state) +{ + struct vic_device *vic = to_vic(dev); + void __iomem *base = vic->base; + + printk(KERN_DEBUG "%s: suspending vic at %p\n", __func__, base); + + vic->int_select = readl(base + VIC_INT_SELECT); + vic->int_enable = readl(base + VIC_INT_ENABLE); + vic->soft_int = readl(base + VIC_INT_SOFT); + vic->protect = readl(base + VIC_PROTECT); + + /* set the interrupts (if any) that are used for + * resuming the system */ + + writel(vic->resume_irqs, base + VIC_INT_ENABLE); + writel(~vic->resume_irqs, base + VIC_INT_ENABLE_CLEAR); + + return 0; +} + +struct sysdev_class vic_class = { + .name = "vic", + .suspend = vic_class_suspend, + .resume = vic_class_resume, +}; + +/** + * vic_pm_register - Register a VIC for later power management control + * @base: The base address of the VIC. + * @irq: The base IRQ for the VIC. + * @resume_sources: bitmask of interrupts allowed for resume sources. + * + * Register the VIC with the system device tree so that it can be notified + * of suspend and resume requests and ensure that the correct actions are + * taken to re-instate the settings on resume. + */ +static void __init vic_pm_register(void __iomem *base, unsigned int irq, u32 resume_sources) +{ + struct vic_device *v; + + if (vic_id >= ARRAY_SIZE(vic_devices)) + printk(KERN_ERR "%s: too few VICs, increase CONFIG_ARM_VIC_NR\n", __func__); + else { + v = &vic_devices[vic_id]; + v->base = base; + v->resume_sources = resume_sources; + v->irq = irq; + vic_id++; + } +} + +/** + * vic_pm_init - initicall to register VIC pm + * + * This is called via late_initcall() to register + * the resources for the VICs due to the early + * nature of the VIC's registration. +*/ +static int __init vic_pm_init(void) +{ + struct vic_device *dev = vic_devices; + int err; + int id; + + if (vic_id == 0) + return 0; + + err = sysdev_class_register(&vic_class); + if (err) { + printk(KERN_ERR "%s: cannot register class\n", __func__); + return err; + } + + for (id = 0; id < vic_id; id++, dev++) { + dev->sysdev.id = id; + dev->sysdev.cls = &vic_class; + + err = sysdev_register(&dev->sysdev); + if (err) { + printk(KERN_ERR "%s: failed to register device\n", + __func__); + return err; + } + } + + return 0; +} + +late_initcall(vic_pm_init); + +static struct vic_device *vic_from_irq(unsigned int irq) +{ + struct vic_device *v = vic_devices; + unsigned int base_irq = irq & ~31; + int id; + + for (id = 0; id < vic_id; id++, v++) { + if (v->irq == base_irq) + return v; + } + + return NULL; +} + +static int vic_set_wake(unsigned int irq, unsigned int on) +{ + struct vic_device *v = vic_from_irq(irq); + unsigned int off = irq & 31; + + if (!v) + return -EINVAL; + + if (on) + v->resume_irqs |= 1 << off; + else + v->resume_irqs &= ~(1 << off); + + return 0; +} + +#else +static inline void vic_pm_register(void __iomem *base, unsigned int irq, u32 arg1) { } + +#define vic_set_wake NULL +#endif /* CONFIG_PM */ + static struct irq_chip vic_chip = { .name = "VIC", .ack = vic_mask_irq, .mask = vic_mask_irq, .unmask = vic_unmask_irq, + .set_wake = vic_set_wake, }; /** @@ -51,9 +260,10 @@ static struct irq_chip vic_chip = { * @base: iomem base address * @irq_start: starting interrupt number, must be muliple of 32 * @vic_sources: bitmask of interrupt sources to allow + * @resume_sources: bitmask of interrupt sources to allow for resume */ void __init vic_init(void __iomem *base, unsigned int irq_start, - u32 vic_sources) + u32 vic_sources, u32 resume_sources) { unsigned int i; @@ -77,12 +287,7 @@ void __init vic_init(void __iomem *base, unsigned int irq_start, writel(value, base + VIC_PL190_VECT_ADDR); } - for (i = 0; i < 16; i++) { - void __iomem *reg = base + VIC_VECT_CNTL0 + (i * 4); - writel(VIC_VECT_CNTL_ENABLE | i, reg); - } - - writel(32, base + VIC_PL190_DEF_VECT_ADDR); + vic_init2(base); for (i = 0; i < 32; i++) { if (vic_sources & (1 << i)) { @@ -94,4 +299,6 @@ void __init vic_init(void __iomem *base, unsigned int irq_start, set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); } } + + vic_pm_register(base, irq_start, resume_sources); } -- cgit v1.2.3 From c0683039207226afcffbe0fbf6a1caaee77a37b0 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Wed, 3 Jun 2009 17:43:14 +0100 Subject: [ARM] 5536/1: Move clk_add_alias() to arch/arm/common/clkdev.c This can be used for other arm platforms too as discussed on the linux-arm-kernel list. Also check the return value with IS_ERR and return PTR_ERR as suggested by Russell King. Signed-off-by: Tony Lindgren Signed-off-by: Russell King --- arch/arm/common/clkdev.c | 18 ++++++++++++++++++ arch/arm/mach-pxa/clock.c | 17 ----------------- include/linux/clk.h | 13 +++++++++++++ 3 files changed, 31 insertions(+), 17 deletions(-) (limited to 'arch/arm/common') diff --git a/arch/arm/common/clkdev.c b/arch/arm/common/clkdev.c index 5589444ff437..f37afd9422f3 100644 --- a/arch/arm/common/clkdev.c +++ b/arch/arm/common/clkdev.c @@ -135,6 +135,24 @@ struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id, } EXPORT_SYMBOL(clkdev_alloc); +int clk_add_alias(const char *alias, const char *alias_dev_name, char *id, + struct device *dev) +{ + struct clk *r = clk_get(dev, id); + struct clk_lookup *l; + + if (IS_ERR(r)) + return PTR_ERR(r); + + l = clkdev_alloc(r, alias, alias_dev_name); + clk_put(r); + if (!l) + return -ENODEV; + clkdev_add(l); + return 0; +} +EXPORT_SYMBOL(clk_add_alias); + /* * clkdev_drop - remove a clock dynamically allocated */ diff --git a/arch/arm/mach-pxa/clock.c b/arch/arm/mach-pxa/clock.c index db52d2c4791d..49ae38292310 100644 --- a/arch/arm/mach-pxa/clock.c +++ b/arch/arm/mach-pxa/clock.c @@ -86,20 +86,3 @@ void clks_register(struct clk_lookup *clks, size_t num) for (i = 0; i < num; i++) clkdev_add(&clks[i]); } - -int clk_add_alias(const char *alias, const char *alias_dev_name, char *id, - struct device *dev) -{ - struct clk *r = clk_get(dev, id); - struct clk_lookup *l; - - if (!r) - return -ENODEV; - - l = clkdev_alloc(r, alias, alias_dev_name); - clk_put(r); - if (!l) - return -ENODEV; - clkdev_add(l); - return 0; -} diff --git a/include/linux/clk.h b/include/linux/clk.h index 1db9bbf444a3..1d37f42ac294 100644 --- a/include/linux/clk.h +++ b/include/linux/clk.h @@ -142,4 +142,17 @@ struct clk *clk_get_parent(struct clk *clk); */ struct clk *clk_get_sys(const char *dev_id, const char *con_id); +/** + * clk_add_alias - add a new clock alias + * @alias: name for clock alias + * @alias_dev_name: device name + * @id: platform specific clock name + * @dev: device + * + * Allows using generic clock names for drivers by adding a new alias. + * Assumes clkdev, see clkdev.h for more info. + */ +int clk_add_alias(const char *alias, const char *alias_dev_name, char *id, + struct device *dev); + #endif -- cgit v1.2.3 From 0aacfe1d239952a87c17e38e12df94c4ea979839 Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 1 Jun 2009 18:17:53 +0100 Subject: [ARM] Make ARM_VIC_NR depend on ARM_VIC Signed-off-by: Russell King --- arch/arm/common/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arm/common') diff --git a/arch/arm/common/Kconfig b/arch/arm/common/Kconfig index 38518d450bc0..08f27862d09d 100644 --- a/arch/arm/common/Kconfig +++ b/arch/arm/common/Kconfig @@ -7,6 +7,7 @@ config ARM_VIC config ARM_VIC_NR int default 2 + depends on ARM_VIC help The maximum number of VICs available in the system, for power management. -- cgit v1.2.3 From 78731d33c1868f4ba43bafcca8dcaf938872c1f2 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sat, 28 Mar 2009 18:18:51 +0300 Subject: [ARM] pxa/sharpsl_pm: merge the two sharpsl_pm.c since it's now pxa specific collie_pm was the only non-PXA user of sharpsl_pm. Now as it's gone we can merge code into one single file to allow further cleanup. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Eric Miao --- arch/arm/common/Kconfig | 4 - arch/arm/common/Makefile | 1 - arch/arm/common/sharpsl_pm.c | 859 ---------------------------- arch/arm/include/asm/hardware/sharpsl_pm.h | 106 ---- arch/arm/mach-pxa/Kconfig | 4 + arch/arm/mach-pxa/include/mach/sharpsl_pm.h | 106 ++++ arch/arm/mach-pxa/sharpsl.h | 2 +- arch/arm/mach-pxa/sharpsl_pm.c | 834 ++++++++++++++++++++++++++- 8 files changed, 944 insertions(+), 972 deletions(-) delete mode 100644 arch/arm/common/sharpsl_pm.c delete mode 100644 arch/arm/include/asm/hardware/sharpsl_pm.h create mode 100644 arch/arm/mach-pxa/include/mach/sharpsl_pm.h (limited to 'arch/arm/common') diff --git a/arch/arm/common/Kconfig b/arch/arm/common/Kconfig index a2cd9beaf37d..dea7ce337f89 100644 --- a/arch/arm/common/Kconfig +++ b/arch/arm/common/Kconfig @@ -27,10 +27,6 @@ config SHARP_LOCOMO config SHARP_PARAM bool -config SHARPSL_PM - bool - select APM_EMULATION - config SHARP_SCOOP bool diff --git a/arch/arm/common/Makefile b/arch/arm/common/Makefile index 7cb7961d81cb..76be7ff2a7ca 100644 --- a/arch/arm/common/Makefile +++ b/arch/arm/common/Makefile @@ -12,7 +12,6 @@ obj-$(CONFIG_DMABOUNCE) += dmabounce.o obj-$(CONFIG_TIMER_ACORN) += time-acorn.o obj-$(CONFIG_SHARP_LOCOMO) += locomo.o obj-$(CONFIG_SHARP_PARAM) += sharpsl_param.o -obj-$(CONFIG_SHARPSL_PM) += sharpsl_pm.o obj-$(CONFIG_SHARP_SCOOP) += scoop.o obj-$(CONFIG_ARCH_IXP2000) += uengine.o obj-$(CONFIG_ARCH_IXP23XX) += uengine.o diff --git a/arch/arm/common/sharpsl_pm.c b/arch/arm/common/sharpsl_pm.c deleted file mode 100644 index 140f1d721d50..000000000000 --- a/arch/arm/common/sharpsl_pm.c +++ /dev/null @@ -1,859 +0,0 @@ -/* - * Battery and Power Management code for the Sharp SL-C7xx and SL-Cxx00 - * series of PDAs - * - * Copyright (c) 2004-2005 Richard Purdie - * - * Based on code written by Sharp for 2.4 kernels - * - * 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. - * - */ - -#undef DEBUG - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include - -/* - * Constants - */ -#define SHARPSL_CHARGE_ON_TIME_INTERVAL (msecs_to_jiffies(1*60*1000)) /* 1 min */ -#define SHARPSL_CHARGE_FINISH_TIME (msecs_to_jiffies(10*60*1000)) /* 10 min */ -#define SHARPSL_BATCHK_TIME (msecs_to_jiffies(15*1000)) /* 15 sec */ -#define SHARPSL_BATCHK_TIME_SUSPEND (60*10) /* 10 min */ - -#define SHARPSL_WAIT_CO_TIME 15 /* 15 sec */ -#define SHARPSL_WAIT_DISCHARGE_ON 100 /* 100 msec */ -#define SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP 10 /* 10 msec */ -#define SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT 10 /* 10 msec */ -#define SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN 10 /* 10 msec */ -#define SHARPSL_CHARGE_WAIT_TIME 15 /* 15 msec */ -#define SHARPSL_CHARGE_CO_CHECK_TIME 5 /* 5 msec */ -#define SHARPSL_CHARGE_RETRY_CNT 1 /* eqv. 10 min */ - -/* - * Prototypes - */ -#ifdef CONFIG_PM -static int sharpsl_off_charge_battery(void); -static int sharpsl_check_battery_voltage(void); -static int sharpsl_fatal_check(void); -#endif -static int sharpsl_check_battery_temp(void); -static int sharpsl_ac_check(void); -static int sharpsl_average_value(int ad); -static void sharpsl_average_clear(void); -static void sharpsl_charge_toggle(struct work_struct *private_); -static void sharpsl_battery_thread(struct work_struct *private_); - - -/* - * Variables - */ -struct sharpsl_pm_status sharpsl_pm; -DECLARE_DELAYED_WORK(toggle_charger, sharpsl_charge_toggle); -DECLARE_DELAYED_WORK(sharpsl_bat, sharpsl_battery_thread); -DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger); - - -static int get_percentage(int voltage) -{ - int i = sharpsl_pm.machinfo->bat_levels - 1; - int bl_status = sharpsl_pm.machinfo->backlight_get_status ? sharpsl_pm.machinfo->backlight_get_status() : 0; - struct battery_thresh *thresh; - - if (sharpsl_pm.charge_mode == CHRG_ON) - thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_acin_bl : sharpsl_pm.machinfo->bat_levels_acin; - else - thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_noac_bl : sharpsl_pm.machinfo->bat_levels_noac; - - while (i > 0 && (voltage > thresh[i].voltage)) - i--; - - return thresh[i].percentage; -} - -static int get_apm_status(int voltage) -{ - int low_thresh, high_thresh; - - if (sharpsl_pm.charge_mode == CHRG_ON) { - high_thresh = sharpsl_pm.machinfo->status_high_acin; - low_thresh = sharpsl_pm.machinfo->status_low_acin; - } else { - high_thresh = sharpsl_pm.machinfo->status_high_noac; - low_thresh = sharpsl_pm.machinfo->status_low_noac; - } - - if (voltage >= high_thresh) - return APM_BATTERY_STATUS_HIGH; - if (voltage >= low_thresh) - return APM_BATTERY_STATUS_LOW; - return APM_BATTERY_STATUS_CRITICAL; -} - -void sharpsl_battery_kick(void) -{ - schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(125)); -} -EXPORT_SYMBOL(sharpsl_battery_kick); - - -static void sharpsl_battery_thread(struct work_struct *private_) -{ - int voltage, percent, apm_status, i = 0; - - if (!sharpsl_pm.machinfo) - return; - - sharpsl_pm.battstat.ac_status = (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN) ? APM_AC_ONLINE : APM_AC_OFFLINE); - - /* Corgi cannot confirm when battery fully charged so periodically kick! */ - if (!sharpsl_pm.machinfo->batfull_irq && (sharpsl_pm.charge_mode == CHRG_ON) - && time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL)) - schedule_delayed_work(&toggle_charger, 0); - - while(1) { - voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); - - if (voltage > 0) break; - if (i++ > 5) { - voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage; - dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n"); - break; - } - } - - voltage = sharpsl_average_value(voltage); - apm_status = get_apm_status(voltage); - percent = get_percentage(voltage); - - /* At low battery voltages, the voltage has a tendency to start - creeping back up so we try to avoid this here */ - if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE) || (apm_status == APM_BATTERY_STATUS_HIGH) || percent <= sharpsl_pm.battstat.mainbat_percent) { - sharpsl_pm.battstat.mainbat_voltage = voltage; - sharpsl_pm.battstat.mainbat_status = apm_status; - sharpsl_pm.battstat.mainbat_percent = percent; - } - - dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %ld\n", voltage, - sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies); - -#ifdef CONFIG_BACKLIGHT_CORGI - /* If battery is low. limit backlight intensity to save power. */ - if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE) - && ((sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_LOW) || - (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL))) { - if (!(sharpsl_pm.flags & SHARPSL_BL_LIMIT)) { - sharpsl_pm.machinfo->backlight_limit(1); - sharpsl_pm.flags |= SHARPSL_BL_LIMIT; - } - } else if (sharpsl_pm.flags & SHARPSL_BL_LIMIT) { - sharpsl_pm.machinfo->backlight_limit(0); - sharpsl_pm.flags &= ~SHARPSL_BL_LIMIT; - } -#endif - - /* Suspend if critical battery level */ - if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE) - && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL) - && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) { - sharpsl_pm.flags |= SHARPSL_APM_QUEUED; - dev_err(sharpsl_pm.dev, "Fatal Off\n"); - apm_queue_event(APM_CRITICAL_SUSPEND); - } - - schedule_delayed_work(&sharpsl_bat, SHARPSL_BATCHK_TIME); -} - -void sharpsl_pm_led(int val) -{ - if (val == SHARPSL_LED_ERROR) { - dev_err(sharpsl_pm.dev, "Charging Error!\n"); - } else if (val == SHARPSL_LED_ON) { - dev_dbg(sharpsl_pm.dev, "Charge LED On\n"); - led_trigger_event(sharpsl_charge_led_trigger, LED_FULL); - } else { - dev_dbg(sharpsl_pm.dev, "Charge LED Off\n"); - led_trigger_event(sharpsl_charge_led_trigger, LED_OFF); - } -} - -static void sharpsl_charge_on(void) -{ - dev_dbg(sharpsl_pm.dev, "Turning Charger On\n"); - - sharpsl_pm.full_count = 0; - sharpsl_pm.charge_mode = CHRG_ON; - schedule_delayed_work(&toggle_charger, msecs_to_jiffies(250)); - schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(500)); -} - -static void sharpsl_charge_off(void) -{ - dev_dbg(sharpsl_pm.dev, "Turning Charger Off\n"); - - sharpsl_pm.machinfo->charge(0); - sharpsl_pm_led(SHARPSL_LED_OFF); - sharpsl_pm.charge_mode = CHRG_OFF; - - schedule_delayed_work(&sharpsl_bat, 0); -} - -static void sharpsl_charge_error(void) -{ - sharpsl_pm_led(SHARPSL_LED_ERROR); - sharpsl_pm.machinfo->charge(0); - sharpsl_pm.charge_mode = CHRG_ERROR; -} - -static void sharpsl_charge_toggle(struct work_struct *private_) -{ - dev_dbg(sharpsl_pm.dev, "Toogling Charger at time: %lx\n", jiffies); - - if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) { - sharpsl_charge_off(); - return; - } else if ((sharpsl_check_battery_temp() < 0) || (sharpsl_ac_check() < 0)) { - sharpsl_charge_error(); - return; - } - - sharpsl_pm_led(SHARPSL_LED_ON); - sharpsl_pm.machinfo->charge(0); - mdelay(SHARPSL_CHARGE_WAIT_TIME); - sharpsl_pm.machinfo->charge(1); - - sharpsl_pm.charge_start_time = jiffies; -} - -static void sharpsl_ac_timer(unsigned long data) -{ - int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); - - dev_dbg(sharpsl_pm.dev, "AC Status: %d\n",acin); - - sharpsl_average_clear(); - if (acin && (sharpsl_pm.charge_mode != CHRG_ON)) - sharpsl_charge_on(); - else if (sharpsl_pm.charge_mode == CHRG_ON) - sharpsl_charge_off(); - - schedule_delayed_work(&sharpsl_bat, 0); -} - - -irqreturn_t sharpsl_ac_isr(int irq, void *dev_id) -{ - /* Delay the event slightly to debounce */ - /* Must be a smaller delay than the chrg_full_isr below */ - mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250)); - - return IRQ_HANDLED; -} - -static void sharpsl_chrg_full_timer(unsigned long data) -{ - dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies); - - sharpsl_pm.full_count++; - - if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) { - dev_dbg(sharpsl_pm.dev, "Charge Full: AC removed - stop charging!\n"); - if (sharpsl_pm.charge_mode == CHRG_ON) - sharpsl_charge_off(); - } else if (sharpsl_pm.full_count < 2) { - dev_dbg(sharpsl_pm.dev, "Charge Full: Count too low\n"); - schedule_delayed_work(&toggle_charger, 0); - } else if (time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_FINISH_TIME)) { - dev_dbg(sharpsl_pm.dev, "Charge Full: Interrupt generated too slowly - retry.\n"); - schedule_delayed_work(&toggle_charger, 0); - } else { - sharpsl_charge_off(); - sharpsl_pm.charge_mode = CHRG_DONE; - dev_dbg(sharpsl_pm.dev, "Charge Full: Charging Finished\n"); - } -} - -/* Charging Finished Interrupt (Not present on Corgi) */ -/* Can trigger at the same time as an AC status change so - delay until after that has been processed */ -irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id) -{ - if (sharpsl_pm.flags & SHARPSL_SUSPENDED) - return IRQ_HANDLED; - - /* delay until after any ac interrupt */ - mod_timer(&sharpsl_pm.chrg_full_timer, jiffies + msecs_to_jiffies(500)); - - return IRQ_HANDLED; -} - -irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id) -{ - int is_fatal = 0; - - if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) { - dev_err(sharpsl_pm.dev, "Battery now Unlocked! Suspending.\n"); - is_fatal = 1; - } - - if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL)) { - dev_err(sharpsl_pm.dev, "Fatal Batt Error! Suspending.\n"); - is_fatal = 1; - } - - if (!(sharpsl_pm.flags & SHARPSL_APM_QUEUED) && is_fatal) { - sharpsl_pm.flags |= SHARPSL_APM_QUEUED; - apm_queue_event(APM_CRITICAL_SUSPEND); - } - - return IRQ_HANDLED; -} - -/* - * Maintain an average of the last 10 readings - */ -#define SHARPSL_CNV_VALUE_NUM 10 -static int sharpsl_ad_index; - -static void sharpsl_average_clear(void) -{ - sharpsl_ad_index = 0; -} - -static int sharpsl_average_value(int ad) -{ - int i, ad_val = 0; - static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1]; - - if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) { - sharpsl_ad_index = 0; - return ad; - } - - sharpsl_ad[sharpsl_ad_index] = ad; - sharpsl_ad_index++; - if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) { - for (i=0; i < (SHARPSL_CNV_VALUE_NUM-1); i++) - sharpsl_ad[i] = sharpsl_ad[i+1]; - sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1; - } - for (i=0; i < sharpsl_ad_index; i++) - ad_val += sharpsl_ad[i]; - - return (ad_val / sharpsl_ad_index); -} - -/* - * Take an array of 5 integers, remove the maximum and minimum values - * and return the average. - */ -static int get_select_val(int *val) -{ - int i, j, k, temp, sum = 0; - - /* Find MAX val */ - temp = val[0]; - j=0; - for (i=1; i<5; i++) { - if (temp < val[i]) { - temp = val[i]; - j = i; - } - } - - /* Find MIN val */ - temp = val[4]; - k=4; - for (i=3; i>=0; i--) { - if (temp > val[i]) { - temp = val[i]; - k = i; - } - } - - for (i=0; i<5; i++) - if (i != j && i != k ) - sum += val[i]; - - dev_dbg(sharpsl_pm.dev, "Average: %d from values: %d, %d, %d, %d, %d\n", sum/3, val[0], val[1], val[2], val[3], val[4]); - - return (sum/3); -} - -static int sharpsl_check_battery_temp(void) -{ - int val, i, buff[5]; - - /* Check battery temperature */ - for (i=0; i<5; i++) { - mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP); - sharpsl_pm.machinfo->measure_temp(1); - mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP); - buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_TEMP); - sharpsl_pm.machinfo->measure_temp(0); - } - - val = get_select_val(buff); - - dev_dbg(sharpsl_pm.dev, "Temperature: %d\n", val); - if (val > sharpsl_pm.machinfo->charge_on_temp) { - printk(KERN_WARNING "Not charging: temperature out of limits.\n"); - return -1; - } - - return 0; -} - -#ifdef CONFIG_PM -static int sharpsl_check_battery_voltage(void) -{ - int val, i, buff[5]; - - /* disable charge, enable discharge */ - sharpsl_pm.machinfo->charge(0); - sharpsl_pm.machinfo->discharge(1); - mdelay(SHARPSL_WAIT_DISCHARGE_ON); - - if (sharpsl_pm.machinfo->discharge1) - sharpsl_pm.machinfo->discharge1(1); - - /* Check battery voltage */ - for (i=0; i<5; i++) { - buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); - mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT); - } - - if (sharpsl_pm.machinfo->discharge1) - sharpsl_pm.machinfo->discharge1(0); - - sharpsl_pm.machinfo->discharge(0); - - val = get_select_val(buff); - dev_dbg(sharpsl_pm.dev, "Battery Voltage: %d\n", val); - - if (val < sharpsl_pm.machinfo->charge_on_volt) - return -1; - - return 0; -} -#endif - -static int sharpsl_ac_check(void) -{ - int temp, i, buff[5]; - - for (i=0; i<5; i++) { - buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_ACIN_VOLT); - mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN); - } - - temp = get_select_val(buff); - dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n",temp); - - if ((temp > sharpsl_pm.machinfo->charge_acin_high) || (temp < sharpsl_pm.machinfo->charge_acin_low)) { - dev_err(sharpsl_pm.dev, "Error: AC check failed.\n"); - return -1; - } - - return 0; -} - -#ifdef CONFIG_PM -static int sharpsl_pm_suspend(struct platform_device *pdev, pm_message_t state) -{ - sharpsl_pm.flags |= SHARPSL_SUSPENDED; - flush_scheduled_work(); - - if (sharpsl_pm.charge_mode == CHRG_ON) - sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; - else - sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG; - - return 0; -} - -static int sharpsl_pm_resume(struct platform_device *pdev) -{ - /* Clear the reset source indicators as they break the bootloader upon reboot */ - RCSR = 0x0f; - sharpsl_average_clear(); - sharpsl_pm.flags &= ~SHARPSL_APM_QUEUED; - sharpsl_pm.flags &= ~SHARPSL_SUSPENDED; - - return 0; -} - -static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state) -{ - dev_dbg(sharpsl_pm.dev, "Time is: %08x\n",RCNR); - - dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n",sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG); - /* not charging and AC-IN! */ - - if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN))) { - dev_dbg(sharpsl_pm.dev, "Activating Offline Charger...\n"); - sharpsl_pm.charge_mode = CHRG_OFF; - sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG; - sharpsl_off_charge_battery(); - } - - sharpsl_pm.machinfo->presuspend(); - - PEDR = 0xffffffff; /* clear it */ - - sharpsl_pm.flags &= ~SHARPSL_ALARM_ACTIVE; - if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) { - RTSR &= RTSR_ALE; - RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND; - dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n",RTAR); - sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE; - } else if (alarm_enable) { - RTSR &= RTSR_ALE; - RTAR = alarm_time; - dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n",RTAR); - } else { - dev_dbg(sharpsl_pm.dev, "No alarms set.\n"); - } - - pxa_pm_enter(state); - - sharpsl_pm.machinfo->postsuspend(); - - dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n",PEDR); -} - -static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state) -{ - if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable) ) - { - if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) { - dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n"); - corgi_goto_sleep(alarm_time, alarm_enable, state); - return 1; - } - if(sharpsl_off_charge_battery()) { - dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n"); - corgi_goto_sleep(alarm_time, alarm_enable, state); - return 1; - } - dev_dbg(sharpsl_pm.dev, "User triggered wakeup in offline charger.\n"); - } - - if ((!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) || (sharpsl_fatal_check() < 0) ) - { - dev_err(sharpsl_pm.dev, "Fatal condition. Suspend.\n"); - corgi_goto_sleep(alarm_time, alarm_enable, state); - return 1; - } - - return 0; -} - -static int corgi_pxa_pm_enter(suspend_state_t state) -{ - unsigned long alarm_time = RTAR; - unsigned int alarm_status = ((RTSR & RTSR_ALE) != 0); - - dev_dbg(sharpsl_pm.dev, "SharpSL suspending for first time.\n"); - - corgi_goto_sleep(alarm_time, alarm_status, state); - - while (corgi_enter_suspend(alarm_time,alarm_status,state)) - {} - - if (sharpsl_pm.machinfo->earlyresume) - sharpsl_pm.machinfo->earlyresume(); - - dev_dbg(sharpsl_pm.dev, "SharpSL resuming...\n"); - - return 0; -} - -/* - * Check for fatal battery errors - * Fatal returns -1 - */ -static int sharpsl_fatal_check(void) -{ - int buff[5], temp, i, acin; - - dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check entered\n"); - - /* Check AC-Adapter */ - acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); - - if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) { - sharpsl_pm.machinfo->charge(0); - udelay(100); - sharpsl_pm.machinfo->discharge(1); /* enable discharge */ - mdelay(SHARPSL_WAIT_DISCHARGE_ON); - } - - if (sharpsl_pm.machinfo->discharge1) - sharpsl_pm.machinfo->discharge1(1); - - /* Check battery : check inserting battery ? */ - for (i=0; i<5; i++) { - buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); - mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT); - } - - if (sharpsl_pm.machinfo->discharge1) - sharpsl_pm.machinfo->discharge1(0); - - if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) { - udelay(100); - sharpsl_pm.machinfo->charge(1); - sharpsl_pm.machinfo->discharge(0); - } - - temp = get_select_val(buff); - dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check: acin: %d, discharge voltage: %d, no discharge: %ld\n", acin, temp, sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT)); - - if ((acin && (temp < sharpsl_pm.machinfo->fatal_acin_volt)) || - (!acin && (temp < sharpsl_pm.machinfo->fatal_noacin_volt))) - return -1; - return 0; -} - -static int sharpsl_off_charge_error(void) -{ - dev_err(sharpsl_pm.dev, "Offline Charger: Error occurred.\n"); - sharpsl_pm.machinfo->charge(0); - sharpsl_pm_led(SHARPSL_LED_ERROR); - sharpsl_pm.charge_mode = CHRG_ERROR; - return 1; -} - -/* - * Charging Control while suspended - * Return 1 - go straight to sleep - * Return 0 - sleep or wakeup depending on other factors - */ -static int sharpsl_off_charge_battery(void) -{ - int time; - - dev_dbg(sharpsl_pm.dev, "Charge Mode: %d\n", sharpsl_pm.charge_mode); - - if (sharpsl_pm.charge_mode == CHRG_OFF) { - dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 1\n"); - - /* AC Check */ - if ((sharpsl_ac_check() < 0) || (sharpsl_check_battery_temp() < 0)) - return sharpsl_off_charge_error(); - - /* Start Charging */ - sharpsl_pm_led(SHARPSL_LED_ON); - sharpsl_pm.machinfo->charge(0); - mdelay(SHARPSL_CHARGE_WAIT_TIME); - sharpsl_pm.machinfo->charge(1); - - sharpsl_pm.charge_mode = CHRG_ON; - sharpsl_pm.full_count = 0; - - return 1; - } else if (sharpsl_pm.charge_mode != CHRG_ON) { - return 1; - } - - if (sharpsl_pm.full_count == 0) { - int time; - - dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 2\n"); - - if ((sharpsl_check_battery_temp() < 0) || (sharpsl_check_battery_voltage() < 0)) - return sharpsl_off_charge_error(); - - sharpsl_pm.machinfo->charge(0); - mdelay(SHARPSL_CHARGE_WAIT_TIME); - sharpsl_pm.machinfo->charge(1); - sharpsl_pm.charge_mode = CHRG_ON; - - mdelay(SHARPSL_CHARGE_CO_CHECK_TIME); - - time = RCNR; - while(1) { - /* Check if any wakeup event had occurred */ - if (sharpsl_pm.machinfo->charger_wakeup() != 0) - return 0; - /* Check for timeout */ - if ((RCNR - time) > SHARPSL_WAIT_CO_TIME) - return 1; - if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) { - dev_dbg(sharpsl_pm.dev, "Offline Charger: Charge full occurred. Retrying to check\n"); - sharpsl_pm.full_count++; - sharpsl_pm.machinfo->charge(0); - mdelay(SHARPSL_CHARGE_WAIT_TIME); - sharpsl_pm.machinfo->charge(1); - return 1; - } - } - } - - dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 3\n"); - - mdelay(SHARPSL_CHARGE_CO_CHECK_TIME); - - time = RCNR; - while(1) { - /* Check if any wakeup event had occurred */ - if (sharpsl_pm.machinfo->charger_wakeup() != 0) - return 0; - /* Check for timeout */ - if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) { - if (sharpsl_pm.full_count > SHARPSL_CHARGE_RETRY_CNT) { - dev_dbg(sharpsl_pm.dev, "Offline Charger: Not charged sufficiently. Retrying.\n"); - sharpsl_pm.full_count = 0; - } - sharpsl_pm.full_count++; - return 1; - } - if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) { - dev_dbg(sharpsl_pm.dev, "Offline Charger: Charging complete.\n"); - sharpsl_pm_led(SHARPSL_LED_OFF); - sharpsl_pm.machinfo->charge(0); - sharpsl_pm.charge_mode = CHRG_DONE; - return 1; - } - } -} -#else -#define sharpsl_pm_suspend NULL -#define sharpsl_pm_resume NULL -#endif - -static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf) -{ - return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_percent); -} - -static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf) -{ - return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_voltage); -} - -static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL); -static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL); - -extern void (*apm_get_power_status)(struct apm_power_info *); - -static void sharpsl_apm_get_power_status(struct apm_power_info *info) -{ - info->ac_line_status = sharpsl_pm.battstat.ac_status; - - if (sharpsl_pm.charge_mode == CHRG_ON) - info->battery_status = APM_BATTERY_STATUS_CHARGING; - else - info->battery_status = sharpsl_pm.battstat.mainbat_status; - - info->battery_flag = (1 << info->battery_status); - info->battery_life = sharpsl_pm.battstat.mainbat_percent; -} - -#ifdef CONFIG_PM -static struct platform_suspend_ops sharpsl_pm_ops = { - .enter = corgi_pxa_pm_enter, - .valid = suspend_valid_only_mem, -}; -#endif - -static int __init sharpsl_pm_probe(struct platform_device *pdev) -{ - int ret; - - if (!pdev->dev.platform_data) - return -EINVAL; - - sharpsl_pm.dev = &pdev->dev; - sharpsl_pm.machinfo = pdev->dev.platform_data; - sharpsl_pm.charge_mode = CHRG_OFF; - sharpsl_pm.flags = 0; - - init_timer(&sharpsl_pm.ac_timer); - sharpsl_pm.ac_timer.function = sharpsl_ac_timer; - - init_timer(&sharpsl_pm.chrg_full_timer); - sharpsl_pm.chrg_full_timer.function = sharpsl_chrg_full_timer; - - led_trigger_register_simple("sharpsl-charge", &sharpsl_charge_led_trigger); - - sharpsl_pm.machinfo->init(); - - ret = device_create_file(&pdev->dev, &dev_attr_battery_percentage); - ret |= device_create_file(&pdev->dev, &dev_attr_battery_voltage); - if (ret != 0) - dev_warn(&pdev->dev, "Failed to register attributes (%d)\n", ret); - - apm_get_power_status = sharpsl_apm_get_power_status; - -#ifdef CONFIG_PM - suspend_set_ops(&sharpsl_pm_ops); -#endif - - mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250)); - - return 0; -} - -static int sharpsl_pm_remove(struct platform_device *pdev) -{ - suspend_set_ops(NULL); - - device_remove_file(&pdev->dev, &dev_attr_battery_percentage); - device_remove_file(&pdev->dev, &dev_attr_battery_voltage); - - led_trigger_unregister_simple(sharpsl_charge_led_trigger); - - sharpsl_pm.machinfo->exit(); - - del_timer_sync(&sharpsl_pm.chrg_full_timer); - del_timer_sync(&sharpsl_pm.ac_timer); - - return 0; -} - -static struct platform_driver sharpsl_pm_driver = { - .probe = sharpsl_pm_probe, - .remove = sharpsl_pm_remove, - .suspend = sharpsl_pm_suspend, - .resume = sharpsl_pm_resume, - .driver = { - .name = "sharpsl-pm", - }, -}; - -static int __devinit sharpsl_pm_init(void) -{ - return platform_driver_register(&sharpsl_pm_driver); -} - -static void sharpsl_pm_exit(void) -{ - platform_driver_unregister(&sharpsl_pm_driver); -} - -late_initcall(sharpsl_pm_init); -module_exit(sharpsl_pm_exit); diff --git a/arch/arm/include/asm/hardware/sharpsl_pm.h b/arch/arm/include/asm/hardware/sharpsl_pm.h deleted file mode 100644 index 2d00db22b981..000000000000 --- a/arch/arm/include/asm/hardware/sharpsl_pm.h +++ /dev/null @@ -1,106 +0,0 @@ -/* - * SharpSL Battery/PM Driver - * - * Copyright (c) 2004-2005 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 - -struct sharpsl_charger_machinfo { - void (*init)(void); - void (*exit)(void); - int gpio_acin; - int gpio_batfull; - int batfull_irq; - int gpio_batlock; - int gpio_fatal; - void (*discharge)(int); - void (*discharge1)(int); - void (*charge)(int); - void (*measure_temp)(int); - void (*presuspend)(void); - void (*postsuspend)(void); - void (*earlyresume)(void); - unsigned long (*read_devdata)(int); -#define SHARPSL_BATT_VOLT 1 -#define SHARPSL_BATT_TEMP 2 -#define SHARPSL_ACIN_VOLT 3 -#define SHARPSL_STATUS_ACIN 4 -#define SHARPSL_STATUS_LOCK 5 -#define SHARPSL_STATUS_CHRGFULL 6 -#define SHARPSL_STATUS_FATAL 7 - unsigned long (*charger_wakeup)(void); - int (*should_wakeup)(unsigned int resume_on_alarm); - void (*backlight_limit)(int); - int (*backlight_get_status) (void); - int charge_on_volt; - int charge_on_temp; - int charge_acin_high; - int charge_acin_low; - int fatal_acin_volt; - int fatal_noacin_volt; - int bat_levels; - struct battery_thresh *bat_levels_noac; - struct battery_thresh *bat_levels_acin; - struct battery_thresh *bat_levels_noac_bl; - struct battery_thresh *bat_levels_acin_bl; - int status_high_acin; - int status_low_acin; - int status_high_noac; - int status_low_noac; -}; - -struct battery_thresh { - int voltage; - int percentage; -}; - -struct battery_stat { - int ac_status; /* APM AC Present/Not Present */ - int mainbat_status; /* APM Main Battery Status */ - int mainbat_percent; /* Main Battery Percentage Charge */ - int mainbat_voltage; /* Main Battery Voltage */ -}; - -struct sharpsl_pm_status { - struct device *dev; - struct timer_list ac_timer; - struct timer_list chrg_full_timer; - - int charge_mode; -#define CHRG_ERROR (-1) -#define CHRG_OFF (0) -#define CHRG_ON (1) -#define CHRG_DONE (2) - - unsigned int flags; -#define SHARPSL_SUSPENDED (1 << 0) /* Device is Suspended */ -#define SHARPSL_ALARM_ACTIVE (1 << 1) /* Alarm is for charging event (not user) */ -#define SHARPSL_BL_LIMIT (1 << 2) /* Backlight Intensity Limited */ -#define SHARPSL_APM_QUEUED (1 << 3) /* APM Event Queued */ -#define SHARPSL_DO_OFFLINE_CHRG (1 << 4) /* Trigger the offline charger */ - - int full_count; - unsigned long charge_start_time; - struct sharpsl_charger_machinfo *machinfo; - struct battery_stat battstat; -}; - -extern struct sharpsl_pm_status sharpsl_pm; - - -#define SHARPSL_LED_ERROR 2 -#define SHARPSL_LED_ON 1 -#define SHARPSL_LED_OFF 0 - -void sharpsl_battery_kick(void); -void sharpsl_pm_led(int val); -irqreturn_t sharpsl_ac_isr(int irq, void *dev_id); -irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id); -irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id); - diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig index 2e45630ebdee..f4533f8ff4e8 100644 --- a/arch/arm/mach-pxa/Kconfig +++ b/arch/arm/mach-pxa/Kconfig @@ -94,6 +94,10 @@ config PXA_SHARPSL SL-C3000 (Spitz), SL-C3100 (Borzoi) or SL-C6000x (Tosa) handheld computer. +config SHARPSL_PM + bool + select APM_EMULATION + config CORGI_SSP_DEPRECATED bool select PXA_SSP diff --git a/arch/arm/mach-pxa/include/mach/sharpsl_pm.h b/arch/arm/mach-pxa/include/mach/sharpsl_pm.h new file mode 100644 index 000000000000..2d00db22b981 --- /dev/null +++ b/arch/arm/mach-pxa/include/mach/sharpsl_pm.h @@ -0,0 +1,106 @@ +/* + * SharpSL Battery/PM Driver + * + * Copyright (c) 2004-2005 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 + +struct sharpsl_charger_machinfo { + void (*init)(void); + void (*exit)(void); + int gpio_acin; + int gpio_batfull; + int batfull_irq; + int gpio_batlock; + int gpio_fatal; + void (*discharge)(int); + void (*discharge1)(int); + void (*charge)(int); + void (*measure_temp)(int); + void (*presuspend)(void); + void (*postsuspend)(void); + void (*earlyresume)(void); + unsigned long (*read_devdata)(int); +#define SHARPSL_BATT_VOLT 1 +#define SHARPSL_BATT_TEMP 2 +#define SHARPSL_ACIN_VOLT 3 +#define SHARPSL_STATUS_ACIN 4 +#define SHARPSL_STATUS_LOCK 5 +#define SHARPSL_STATUS_CHRGFULL 6 +#define SHARPSL_STATUS_FATAL 7 + unsigned long (*charger_wakeup)(void); + int (*should_wakeup)(unsigned int resume_on_alarm); + void (*backlight_limit)(int); + int (*backlight_get_status) (void); + int charge_on_volt; + int charge_on_temp; + int charge_acin_high; + int charge_acin_low; + int fatal_acin_volt; + int fatal_noacin_volt; + int bat_levels; + struct battery_thresh *bat_levels_noac; + struct battery_thresh *bat_levels_acin; + struct battery_thresh *bat_levels_noac_bl; + struct battery_thresh *bat_levels_acin_bl; + int status_high_acin; + int status_low_acin; + int status_high_noac; + int status_low_noac; +}; + +struct battery_thresh { + int voltage; + int percentage; +}; + +struct battery_stat { + int ac_status; /* APM AC Present/Not Present */ + int mainbat_status; /* APM Main Battery Status */ + int mainbat_percent; /* Main Battery Percentage Charge */ + int mainbat_voltage; /* Main Battery Voltage */ +}; + +struct sharpsl_pm_status { + struct device *dev; + struct timer_list ac_timer; + struct timer_list chrg_full_timer; + + int charge_mode; +#define CHRG_ERROR (-1) +#define CHRG_OFF (0) +#define CHRG_ON (1) +#define CHRG_DONE (2) + + unsigned int flags; +#define SHARPSL_SUSPENDED (1 << 0) /* Device is Suspended */ +#define SHARPSL_ALARM_ACTIVE (1 << 1) /* Alarm is for charging event (not user) */ +#define SHARPSL_BL_LIMIT (1 << 2) /* Backlight Intensity Limited */ +#define SHARPSL_APM_QUEUED (1 << 3) /* APM Event Queued */ +#define SHARPSL_DO_OFFLINE_CHRG (1 << 4) /* Trigger the offline charger */ + + int full_count; + unsigned long charge_start_time; + struct sharpsl_charger_machinfo *machinfo; + struct battery_stat battstat; +}; + +extern struct sharpsl_pm_status sharpsl_pm; + + +#define SHARPSL_LED_ERROR 2 +#define SHARPSL_LED_ON 1 +#define SHARPSL_LED_OFF 0 + +void sharpsl_battery_kick(void); +void sharpsl_pm_led(int val); +irqreturn_t sharpsl_ac_isr(int irq, void *dev_id); +irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id); +irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id); + diff --git a/arch/arm/mach-pxa/sharpsl.h b/arch/arm/mach-pxa/sharpsl.h index 047909a76651..f1cd00ea0322 100644 --- a/arch/arm/mach-pxa/sharpsl.h +++ b/arch/arm/mach-pxa/sharpsl.h @@ -7,7 +7,7 @@ * */ -#include +#include /* * SharpSL SSP Driver diff --git a/arch/arm/mach-pxa/sharpsl_pm.c b/arch/arm/mach-pxa/sharpsl_pm.c index 16b4ec67e3b6..9d61c4916968 100644 --- a/arch/arm/mach-pxa/sharpsl_pm.c +++ b/arch/arm/mach-pxa/sharpsl_pm.c @@ -21,13 +21,63 @@ #include #include #include +#include +#include +#include +#include +#include #include #include #include +#include #include +#include #include -#include "sharpsl.h" +#include + +/* + * Constants + */ +#define SHARPSL_CHARGE_ON_TIME_INTERVAL (msecs_to_jiffies(1*60*1000)) /* 1 min */ +#define SHARPSL_CHARGE_FINISH_TIME (msecs_to_jiffies(10*60*1000)) /* 10 min */ +#define SHARPSL_BATCHK_TIME (msecs_to_jiffies(15*1000)) /* 15 sec */ +#define SHARPSL_BATCHK_TIME_SUSPEND (60*10) /* 10 min */ + +#define SHARPSL_WAIT_CO_TIME 15 /* 15 sec */ +#define SHARPSL_WAIT_DISCHARGE_ON 100 /* 100 msec */ +#define SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP 10 /* 10 msec */ +#define SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT 10 /* 10 msec */ +#define SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN 10 /* 10 msec */ +#define SHARPSL_CHARGE_WAIT_TIME 15 /* 15 msec */ +#define SHARPSL_CHARGE_CO_CHECK_TIME 5 /* 5 msec */ +#define SHARPSL_CHARGE_RETRY_CNT 1 /* eqv. 10 min */ + +/* + * Prototypes + */ +#ifdef CONFIG_PM +static int sharpsl_off_charge_battery(void); +static int sharpsl_check_battery_voltage(void); +static int sharpsl_fatal_check(void); +#endif +static int sharpsl_check_battery_temp(void); +static int sharpsl_ac_check(void); +static int sharpsl_average_value(int ad); +static void sharpsl_average_clear(void); +static void sharpsl_charge_toggle(struct work_struct *private_); +static void sharpsl_battery_thread(struct work_struct *private_); + + +/* + * Variables + */ +struct sharpsl_pm_status sharpsl_pm; +DECLARE_DELAYED_WORK(toggle_charger, sharpsl_charge_toggle); +DECLARE_DELAYED_WORK(sharpsl_bat, sharpsl_battery_thread); +DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger); + + struct battery_thresh spitz_battery_levels_acin[] = { { 213, 100}, @@ -189,3 +239,785 @@ void sharpsl_pm_pxa_remove(void) if (sharpsl_pm.machinfo->batfull_irq) free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr); } + +static int get_percentage(int voltage) +{ + int i = sharpsl_pm.machinfo->bat_levels - 1; + int bl_status = sharpsl_pm.machinfo->backlight_get_status ? sharpsl_pm.machinfo->backlight_get_status() : 0; + struct battery_thresh *thresh; + + if (sharpsl_pm.charge_mode == CHRG_ON) + thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_acin_bl : sharpsl_pm.machinfo->bat_levels_acin; + else + thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_noac_bl : sharpsl_pm.machinfo->bat_levels_noac; + + while (i > 0 && (voltage > thresh[i].voltage)) + i--; + + return thresh[i].percentage; +} + +static int get_apm_status(int voltage) +{ + int low_thresh, high_thresh; + + if (sharpsl_pm.charge_mode == CHRG_ON) { + high_thresh = sharpsl_pm.machinfo->status_high_acin; + low_thresh = sharpsl_pm.machinfo->status_low_acin; + } else { + high_thresh = sharpsl_pm.machinfo->status_high_noac; + low_thresh = sharpsl_pm.machinfo->status_low_noac; + } + + if (voltage >= high_thresh) + return APM_BATTERY_STATUS_HIGH; + if (voltage >= low_thresh) + return APM_BATTERY_STATUS_LOW; + return APM_BATTERY_STATUS_CRITICAL; +} + +void sharpsl_battery_kick(void) +{ + schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(125)); +} +EXPORT_SYMBOL(sharpsl_battery_kick); + + +static void sharpsl_battery_thread(struct work_struct *private_) +{ + int voltage, percent, apm_status, i = 0; + + if (!sharpsl_pm.machinfo) + return; + + sharpsl_pm.battstat.ac_status = (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN) ? APM_AC_ONLINE : APM_AC_OFFLINE); + + /* Corgi cannot confirm when battery fully charged so periodically kick! */ + if (!sharpsl_pm.machinfo->batfull_irq && (sharpsl_pm.charge_mode == CHRG_ON) + && time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL)) + schedule_delayed_work(&toggle_charger, 0); + + while(1) { + voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); + + if (voltage > 0) break; + if (i++ > 5) { + voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage; + dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n"); + break; + } + } + + voltage = sharpsl_average_value(voltage); + apm_status = get_apm_status(voltage); + percent = get_percentage(voltage); + + /* At low battery voltages, the voltage has a tendency to start + creeping back up so we try to avoid this here */ + if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE) || (apm_status == APM_BATTERY_STATUS_HIGH) || percent <= sharpsl_pm.battstat.mainbat_percent) { + sharpsl_pm.battstat.mainbat_voltage = voltage; + sharpsl_pm.battstat.mainbat_status = apm_status; + sharpsl_pm.battstat.mainbat_percent = percent; + } + + dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %ld\n", voltage, + sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies); + +#ifdef CONFIG_BACKLIGHT_CORGI + /* If battery is low. limit backlight intensity to save power. */ + if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE) + && ((sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_LOW) || + (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL))) { + if (!(sharpsl_pm.flags & SHARPSL_BL_LIMIT)) { + sharpsl_pm.machinfo->backlight_limit(1); + sharpsl_pm.flags |= SHARPSL_BL_LIMIT; + } + } else if (sharpsl_pm.flags & SHARPSL_BL_LIMIT) { + sharpsl_pm.machinfo->backlight_limit(0); + sharpsl_pm.flags &= ~SHARPSL_BL_LIMIT; + } +#endif + + /* Suspend if critical battery level */ + if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE) + && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL) + && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) { + sharpsl_pm.flags |= SHARPSL_APM_QUEUED; + dev_err(sharpsl_pm.dev, "Fatal Off\n"); + apm_queue_event(APM_CRITICAL_SUSPEND); + } + + schedule_delayed_work(&sharpsl_bat, SHARPSL_BATCHK_TIME); +} + +void sharpsl_pm_led(int val) +{ + if (val == SHARPSL_LED_ERROR) { + dev_err(sharpsl_pm.dev, "Charging Error!\n"); + } else if (val == SHARPSL_LED_ON) { + dev_dbg(sharpsl_pm.dev, "Charge LED On\n"); + led_trigger_event(sharpsl_charge_led_trigger, LED_FULL); + } else { + dev_dbg(sharpsl_pm.dev, "Charge LED Off\n"); + led_trigger_event(sharpsl_charge_led_trigger, LED_OFF); + } +} + +static void sharpsl_charge_on(void) +{ + dev_dbg(sharpsl_pm.dev, "Turning Charger On\n"); + + sharpsl_pm.full_count = 0; + sharpsl_pm.charge_mode = CHRG_ON; + schedule_delayed_work(&toggle_charger, msecs_to_jiffies(250)); + schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(500)); +} + +static void sharpsl_charge_off(void) +{ + dev_dbg(sharpsl_pm.dev, "Turning Charger Off\n"); + + sharpsl_pm.machinfo->charge(0); + sharpsl_pm_led(SHARPSL_LED_OFF); + sharpsl_pm.charge_mode = CHRG_OFF; + + schedule_delayed_work(&sharpsl_bat, 0); +} + +static void sharpsl_charge_error(void) +{ + sharpsl_pm_led(SHARPSL_LED_ERROR); + sharpsl_pm.machinfo->charge(0); + sharpsl_pm.charge_mode = CHRG_ERROR; +} + +static void sharpsl_charge_toggle(struct work_struct *private_) +{ + dev_dbg(sharpsl_pm.dev, "Toogling Charger at time: %lx\n", jiffies); + + if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) { + sharpsl_charge_off(); + return; + } else if ((sharpsl_check_battery_temp() < 0) || (sharpsl_ac_check() < 0)) { + sharpsl_charge_error(); + return; + } + + sharpsl_pm_led(SHARPSL_LED_ON); + sharpsl_pm.machinfo->charge(0); + mdelay(SHARPSL_CHARGE_WAIT_TIME); + sharpsl_pm.machinfo->charge(1); + + sharpsl_pm.charge_start_time = jiffies; +} + +static void sharpsl_ac_timer(unsigned long data) +{ + int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); + + dev_dbg(sharpsl_pm.dev, "AC Status: %d\n",acin); + + sharpsl_average_clear(); + if (acin && (sharpsl_pm.charge_mode != CHRG_ON)) + sharpsl_charge_on(); + else if (sharpsl_pm.charge_mode == CHRG_ON) + sharpsl_charge_off(); + + schedule_delayed_work(&sharpsl_bat, 0); +} + + +irqreturn_t sharpsl_ac_isr(int irq, void *dev_id) +{ + /* Delay the event slightly to debounce */ + /* Must be a smaller delay than the chrg_full_isr below */ + mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250)); + + return IRQ_HANDLED; +} + +static void sharpsl_chrg_full_timer(unsigned long data) +{ + dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies); + + sharpsl_pm.full_count++; + + if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) { + dev_dbg(sharpsl_pm.dev, "Charge Full: AC removed - stop charging!\n"); + if (sharpsl_pm.charge_mode == CHRG_ON) + sharpsl_charge_off(); + } else if (sharpsl_pm.full_count < 2) { + dev_dbg(sharpsl_pm.dev, "Charge Full: Count too low\n"); + schedule_delayed_work(&toggle_charger, 0); + } else if (time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_FINISH_TIME)) { + dev_dbg(sharpsl_pm.dev, "Charge Full: Interrupt generated too slowly - retry.\n"); + schedule_delayed_work(&toggle_charger, 0); + } else { + sharpsl_charge_off(); + sharpsl_pm.charge_mode = CHRG_DONE; + dev_dbg(sharpsl_pm.dev, "Charge Full: Charging Finished\n"); + } +} + +/* Charging Finished Interrupt (Not present on Corgi) */ +/* Can trigger at the same time as an AC status change so + delay until after that has been processed */ +irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id) +{ + if (sharpsl_pm.flags & SHARPSL_SUSPENDED) + return IRQ_HANDLED; + + /* delay until after any ac interrupt */ + mod_timer(&sharpsl_pm.chrg_full_timer, jiffies + msecs_to_jiffies(500)); + + return IRQ_HANDLED; +} + +irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id) +{ + int is_fatal = 0; + + if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) { + dev_err(sharpsl_pm.dev, "Battery now Unlocked! Suspending.\n"); + is_fatal = 1; + } + + if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL)) { + dev_err(sharpsl_pm.dev, "Fatal Batt Error! Suspending.\n"); + is_fatal = 1; + } + + if (!(sharpsl_pm.flags & SHARPSL_APM_QUEUED) && is_fatal) { + sharpsl_pm.flags |= SHARPSL_APM_QUEUED; + apm_queue_event(APM_CRITICAL_SUSPEND); + } + + return IRQ_HANDLED; +} + +/* + * Maintain an average of the last 10 readings + */ +#define SHARPSL_CNV_VALUE_NUM 10 +static int sharpsl_ad_index; + +static void sharpsl_average_clear(void) +{ + sharpsl_ad_index = 0; +} + +static int sharpsl_average_value(int ad) +{ + int i, ad_val = 0; + static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1]; + + if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) { + sharpsl_ad_index = 0; + return ad; + } + + sharpsl_ad[sharpsl_ad_index] = ad; + sharpsl_ad_index++; + if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) { + for (i=0; i < (SHARPSL_CNV_VALUE_NUM-1); i++) + sharpsl_ad[i] = sharpsl_ad[i+1]; + sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1; + } + for (i=0; i < sharpsl_ad_index; i++) + ad_val += sharpsl_ad[i]; + + return (ad_val / sharpsl_ad_index); +} + +/* + * Take an array of 5 integers, remove the maximum and minimum values + * and return the average. + */ +static int get_select_val(int *val) +{ + int i, j, k, temp, sum = 0; + + /* Find MAX val */ + temp = val[0]; + j=0; + for (i=1; i<5; i++) { + if (temp < val[i]) { + temp = val[i]; + j = i; + } + } + + /* Find MIN val */ + temp = val[4]; + k=4; + for (i=3; i>=0; i--) { + if (temp > val[i]) { + temp = val[i]; + k = i; + } + } + + for (i=0; i<5; i++) + if (i != j && i != k ) + sum += val[i]; + + dev_dbg(sharpsl_pm.dev, "Average: %d from values: %d, %d, %d, %d, %d\n", sum/3, val[0], val[1], val[2], val[3], val[4]); + + return (sum/3); +} + +static int sharpsl_check_battery_temp(void) +{ + int val, i, buff[5]; + + /* Check battery temperature */ + for (i=0; i<5; i++) { + mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP); + sharpsl_pm.machinfo->measure_temp(1); + mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP); + buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_TEMP); + sharpsl_pm.machinfo->measure_temp(0); + } + + val = get_select_val(buff); + + dev_dbg(sharpsl_pm.dev, "Temperature: %d\n", val); + if (val > sharpsl_pm.machinfo->charge_on_temp) { + printk(KERN_WARNING "Not charging: temperature out of limits.\n"); + return -1; + } + + return 0; +} + +#ifdef CONFIG_PM +static int sharpsl_check_battery_voltage(void) +{ + int val, i, buff[5]; + + /* disable charge, enable discharge */ + sharpsl_pm.machinfo->charge(0); + sharpsl_pm.machinfo->discharge(1); + mdelay(SHARPSL_WAIT_DISCHARGE_ON); + + if (sharpsl_pm.machinfo->discharge1) + sharpsl_pm.machinfo->discharge1(1); + + /* Check battery voltage */ + for (i=0; i<5; i++) { + buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); + mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT); + } + + if (sharpsl_pm.machinfo->discharge1) + sharpsl_pm.machinfo->discharge1(0); + + sharpsl_pm.machinfo->discharge(0); + + val = get_select_val(buff); + dev_dbg(sharpsl_pm.dev, "Battery Voltage: %d\n", val); + + if (val < sharpsl_pm.machinfo->charge_on_volt) + return -1; + + return 0; +} +#endif + +static int sharpsl_ac_check(void) +{ + int temp, i, buff[5]; + + for (i=0; i<5; i++) { + buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_ACIN_VOLT); + mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN); + } + + temp = get_select_val(buff); + dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n",temp); + + if ((temp > sharpsl_pm.machinfo->charge_acin_high) || (temp < sharpsl_pm.machinfo->charge_acin_low)) { + dev_err(sharpsl_pm.dev, "Error: AC check failed.\n"); + return -1; + } + + return 0; +} + +#ifdef CONFIG_PM +static int sharpsl_pm_suspend(struct platform_device *pdev, pm_message_t state) +{ + sharpsl_pm.flags |= SHARPSL_SUSPENDED; + flush_scheduled_work(); + + if (sharpsl_pm.charge_mode == CHRG_ON) + sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; + else + sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG; + + return 0; +} + +static int sharpsl_pm_resume(struct platform_device *pdev) +{ + /* Clear the reset source indicators as they break the bootloader upon reboot */ + RCSR = 0x0f; + sharpsl_average_clear(); + sharpsl_pm.flags &= ~SHARPSL_APM_QUEUED; + sharpsl_pm.flags &= ~SHARPSL_SUSPENDED; + + return 0; +} + +static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state) +{ + dev_dbg(sharpsl_pm.dev, "Time is: %08x\n",RCNR); + + dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n",sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG); + /* not charging and AC-IN! */ + + if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN))) { + dev_dbg(sharpsl_pm.dev, "Activating Offline Charger...\n"); + sharpsl_pm.charge_mode = CHRG_OFF; + sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG; + sharpsl_off_charge_battery(); + } + + sharpsl_pm.machinfo->presuspend(); + + PEDR = 0xffffffff; /* clear it */ + + sharpsl_pm.flags &= ~SHARPSL_ALARM_ACTIVE; + if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) { + RTSR &= RTSR_ALE; + RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND; + dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n",RTAR); + sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE; + } else if (alarm_enable) { + RTSR &= RTSR_ALE; + RTAR = alarm_time; + dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n",RTAR); + } else { + dev_dbg(sharpsl_pm.dev, "No alarms set.\n"); + } + + pxa_pm_enter(state); + + sharpsl_pm.machinfo->postsuspend(); + + dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n",PEDR); +} + +static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state) +{ + if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable) ) + { + if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) { + dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n"); + corgi_goto_sleep(alarm_time, alarm_enable, state); + return 1; + } + if(sharpsl_off_charge_battery()) { + dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n"); + corgi_goto_sleep(alarm_time, alarm_enable, state); + return 1; + } + dev_dbg(sharpsl_pm.dev, "User triggered wakeup in offline charger.\n"); + } + + if ((!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) || (sharpsl_fatal_check() < 0) ) + { + dev_err(sharpsl_pm.dev, "Fatal condition. Suspend.\n"); + corgi_goto_sleep(alarm_time, alarm_enable, state); + return 1; + } + + return 0; +} + +static int corgi_pxa_pm_enter(suspend_state_t state) +{ + unsigned long alarm_time = RTAR; + unsigned int alarm_status = ((RTSR & RTSR_ALE) != 0); + + dev_dbg(sharpsl_pm.dev, "SharpSL suspending for first time.\n"); + + corgi_goto_sleep(alarm_time, alarm_status, state); + + while (corgi_enter_suspend(alarm_time,alarm_status,state)) + {} + + if (sharpsl_pm.machinfo->earlyresume) + sharpsl_pm.machinfo->earlyresume(); + + dev_dbg(sharpsl_pm.dev, "SharpSL resuming...\n"); + + return 0; +} + +/* + * Check for fatal battery errors + * Fatal returns -1 + */ +static int sharpsl_fatal_check(void) +{ + int buff[5], temp, i, acin; + + dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check entered\n"); + + /* Check AC-Adapter */ + acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); + + if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) { + sharpsl_pm.machinfo->charge(0); + udelay(100); + sharpsl_pm.machinfo->discharge(1); /* enable discharge */ + mdelay(SHARPSL_WAIT_DISCHARGE_ON); + } + + if (sharpsl_pm.machinfo->discharge1) + sharpsl_pm.machinfo->discharge1(1); + + /* Check battery : check inserting battery ? */ + for (i=0; i<5; i++) { + buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); + mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT); + } + + if (sharpsl_pm.machinfo->discharge1) + sharpsl_pm.machinfo->discharge1(0); + + if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) { + udelay(100); + sharpsl_pm.machinfo->charge(1); + sharpsl_pm.machinfo->discharge(0); + } + + temp = get_select_val(buff); + dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check: acin: %d, discharge voltage: %d, no discharge: %ld\n", acin, temp, sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT)); + + if ((acin && (temp < sharpsl_pm.machinfo->fatal_acin_volt)) || + (!acin && (temp < sharpsl_pm.machinfo->fatal_noacin_volt))) + return -1; + return 0; +} + +static int sharpsl_off_charge_error(void) +{ + dev_err(sharpsl_pm.dev, "Offline Charger: Error occurred.\n"); + sharpsl_pm.machinfo->charge(0); + sharpsl_pm_led(SHARPSL_LED_ERROR); + sharpsl_pm.charge_mode = CHRG_ERROR; + return 1; +} + +/* + * Charging Control while suspended + * Return 1 - go straight to sleep + * Return 0 - sleep or wakeup depending on other factors + */ +static int sharpsl_off_charge_battery(void) +{ + int time; + + dev_dbg(sharpsl_pm.dev, "Charge Mode: %d\n", sharpsl_pm.charge_mode); + + if (sharpsl_pm.charge_mode == CHRG_OFF) { + dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 1\n"); + + /* AC Check */ + if ((sharpsl_ac_check() < 0) || (sharpsl_check_battery_temp() < 0)) + return sharpsl_off_charge_error(); + + /* Start Charging */ + sharpsl_pm_led(SHARPSL_LED_ON); + sharpsl_pm.machinfo->charge(0); + mdelay(SHARPSL_CHARGE_WAIT_TIME); + sharpsl_pm.machinfo->charge(1); + + sharpsl_pm.charge_mode = CHRG_ON; + sharpsl_pm.full_count = 0; + + return 1; + } else if (sharpsl_pm.charge_mode != CHRG_ON) { + return 1; + } + + if (sharpsl_pm.full_count == 0) { + int time; + + dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 2\n"); + + if ((sharpsl_check_battery_temp() < 0) || (sharpsl_check_battery_voltage() < 0)) + return sharpsl_off_charge_error(); + + sharpsl_pm.machinfo->charge(0); + mdelay(SHARPSL_CHARGE_WAIT_TIME); + sharpsl_pm.machinfo->charge(1); + sharpsl_pm.charge_mode = CHRG_ON; + + mdelay(SHARPSL_CHARGE_CO_CHECK_TIME); + + time = RCNR; + while(1) { + /* Check if any wakeup event had occurred */ + if (sharpsl_pm.machinfo->charger_wakeup() != 0) + return 0; + /* Check for timeout */ + if ((RCNR - time) > SHARPSL_WAIT_CO_TIME) + return 1; + if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) { + dev_dbg(sharpsl_pm.dev, "Offline Charger: Charge full occurred. Retrying to check\n"); + sharpsl_pm.full_count++; + sharpsl_pm.machinfo->charge(0); + mdelay(SHARPSL_CHARGE_WAIT_TIME); + sharpsl_pm.machinfo->charge(1); + return 1; + } + } + } + + dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 3\n"); + + mdelay(SHARPSL_CHARGE_CO_CHECK_TIME); + + time = RCNR; + while(1) { + /* Check if any wakeup event had occurred */ + if (sharpsl_pm.machinfo->charger_wakeup() != 0) + return 0; + /* Check for timeout */ + if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) { + if (sharpsl_pm.full_count > SHARPSL_CHARGE_RETRY_CNT) { + dev_dbg(sharpsl_pm.dev, "Offline Charger: Not charged sufficiently. Retrying.\n"); + sharpsl_pm.full_count = 0; + } + sharpsl_pm.full_count++; + return 1; + } + if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) { + dev_dbg(sharpsl_pm.dev, "Offline Charger: Charging complete.\n"); + sharpsl_pm_led(SHARPSL_LED_OFF); + sharpsl_pm.machinfo->charge(0); + sharpsl_pm.charge_mode = CHRG_DONE; + return 1; + } + } +} +#else +#define sharpsl_pm_suspend NULL +#define sharpsl_pm_resume NULL +#endif + +static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_percent); +} + +static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_voltage); +} + +static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL); +static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL); + +extern void (*apm_get_power_status)(struct apm_power_info *); + +static void sharpsl_apm_get_power_status(struct apm_power_info *info) +{ + info->ac_line_status = sharpsl_pm.battstat.ac_status; + + if (sharpsl_pm.charge_mode == CHRG_ON) + info->battery_status = APM_BATTERY_STATUS_CHARGING; + else + info->battery_status = sharpsl_pm.battstat.mainbat_status; + + info->battery_flag = (1 << info->battery_status); + info->battery_life = sharpsl_pm.battstat.mainbat_percent; +} + +#ifdef CONFIG_PM +static struct platform_suspend_ops sharpsl_pm_ops = { + .enter = corgi_pxa_pm_enter, + .valid = suspend_valid_only_mem, +}; +#endif + +static int __init sharpsl_pm_probe(struct platform_device *pdev) +{ + int ret; + + if (!pdev->dev.platform_data) + return -EINVAL; + + sharpsl_pm.dev = &pdev->dev; + sharpsl_pm.machinfo = pdev->dev.platform_data; + sharpsl_pm.charge_mode = CHRG_OFF; + sharpsl_pm.flags = 0; + + init_timer(&sharpsl_pm.ac_timer); + sharpsl_pm.ac_timer.function = sharpsl_ac_timer; + + init_timer(&sharpsl_pm.chrg_full_timer); + sharpsl_pm.chrg_full_timer.function = sharpsl_chrg_full_timer; + + led_trigger_register_simple("sharpsl-charge", &sharpsl_charge_led_trigger); + + sharpsl_pm.machinfo->init(); + + ret = device_create_file(&pdev->dev, &dev_attr_battery_percentage); + ret |= device_create_file(&pdev->dev, &dev_attr_battery_voltage); + if (ret != 0) + dev_warn(&pdev->dev, "Failed to register attributes (%d)\n", ret); + + apm_get_power_status = sharpsl_apm_get_power_status; + +#ifdef CONFIG_PM + suspend_set_ops(&sharpsl_pm_ops); +#endif + + mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250)); + + return 0; +} + +static int sharpsl_pm_remove(struct platform_device *pdev) +{ + suspend_set_ops(NULL); + + device_remove_file(&pdev->dev, &dev_attr_battery_percentage); + device_remove_file(&pdev->dev, &dev_attr_battery_voltage); + + led_trigger_unregister_simple(sharpsl_charge_led_trigger); + + sharpsl_pm.machinfo->exit(); + + del_timer_sync(&sharpsl_pm.chrg_full_timer); + del_timer_sync(&sharpsl_pm.ac_timer); + + return 0; +} + +static struct platform_driver sharpsl_pm_driver = { + .probe = sharpsl_pm_probe, + .remove = sharpsl_pm_remove, + .suspend = sharpsl_pm_suspend, + .resume = sharpsl_pm_resume, + .driver = { + .name = "sharpsl-pm", + }, +}; + +static int __devinit sharpsl_pm_init(void) +{ + return platform_driver_register(&sharpsl_pm_driver); +} + +static void sharpsl_pm_exit(void) +{ + platform_driver_unregister(&sharpsl_pm_driver); +} + +late_initcall(sharpsl_pm_init); +module_exit(sharpsl_pm_exit); -- cgit v1.2.3