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|
From f6ec15733eb55e851c8ad19c2143d425558f6044 Mon Sep 17 00:00:00 2001
From: Dmitry Baryshkov <dbaryshkov@gmail.com>
Date: Mon, 4 Feb 2008 20:11:58 +0300
Subject: [PATCH 60/64] Add support for power_supply on tosa
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
---
arch/arm/mach-pxa/Makefile | 2 +-
arch/arm/mach-pxa/tosa_power.c | 82 +++++++
drivers/leds/leds-tosa.c | 2 +-
drivers/power/Kconfig | 7 +
drivers/power/Makefile | 1 +
drivers/power/tosa_battery.c | 458 ++++++++++++++++++++++++++++++++++++++++
6 files changed, 550 insertions(+), 2 deletions(-)
create mode 100644 arch/arm/mach-pxa/tosa_power.c
create mode 100644 drivers/power/tosa_battery.c
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index f276d24..2b68254 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -21,7 +21,7 @@ obj-$(CONFIG_PXA_SHARP_C7xx) += corgi.o corgi_ssp.o corgi_lcd.o sharpsl_pm.o cor
obj-$(CONFIG_PXA_SHARP_Cxx00) += spitz.o corgi_ssp.o corgi_lcd.o sharpsl_pm.o spitz_pm.o
obj-$(CONFIG_MACH_AKITA) += akita-ioexp.o
obj-$(CONFIG_MACH_POODLE) += poodle.o corgi_ssp.o sharpsl_pm.o poodle_pm.o
-obj-$(CONFIG_MACH_TOSA) += tosa.o
+obj-$(CONFIG_MACH_TOSA) += tosa.o tosa_power.o
obj-$(CONFIG_MACH_EM_X270) += em-x270.o
ifeq ($(CONFIG_MACH_ZYLONITE),y)
diff --git a/arch/arm/mach-pxa/tosa_power.c b/arch/arm/mach-pxa/tosa_power.c
new file mode 100644
index 0000000..61ca7dc
--- /dev/null
+++ b/arch/arm/mach-pxa/tosa_power.c
@@ -0,0 +1,82 @@
+/*
+ * Battery and Power Management code for the Sharp SL-6000x
+ *
+ * Copyright (c) 2005 Dirk Opfer
+ * Copyright (c) 2008 Dmitry Baryshkov
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/power_supply.h>
+#include <linux/pda_power.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+
+#include <asm/arch/tosa.h>
+#include <asm/gpio.h>
+
+static int tosa_power_ac_online(void)
+{
+ return gpio_get_value(TOSA_GPIO_AC_IN) == 0;
+}
+
+static char *tosa_ac_supplied_to[] = {
+ "main-battery",
+ "backup-battery",
+ "jacket-battery",
+};
+
+static struct pda_power_pdata tosa_power_data = {
+ .is_ac_online = tosa_power_ac_online,
+ .supplied_to = tosa_ac_supplied_to,
+ .num_supplicants = ARRAY_SIZE(tosa_ac_supplied_to),
+};
+
+static struct resource tosa_power_resource[] = {
+ {
+ .name = "ac",
+ .start = gpio_to_irq(TOSA_GPIO_AC_IN),
+ .end = gpio_to_irq(TOSA_GPIO_AC_IN),
+ .flags = IORESOURCE_IRQ |
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ },
+};
+
+static struct platform_device tosa_power_device = {
+ .name = "pda-power",
+ .id = -1,
+ .dev.platform_data = &tosa_power_data,
+ .resource = tosa_power_resource,
+ .num_resources = ARRAY_SIZE(tosa_power_resource),
+};
+
+static int __init tosa_power_init(void)
+{
+ int ret = gpio_request(TOSA_GPIO_AC_IN, "ac");
+ if (ret)
+ goto err_gpio_req;
+
+ ret = gpio_direction_input(TOSA_GPIO_AC_IN);
+ if (ret)
+ goto err_gpio_in;
+
+ return platform_device_register(&tosa_power_device);
+
+err_gpio_in:
+ gpio_free(TOSA_GPIO_AC_IN);
+err_gpio_req:
+ return ret;
+}
+
+static void __exit tosa_power_exit(void)
+{
+ platform_device_unregister(&tosa_power_device);
+ gpio_free(TOSA_GPIO_AC_IN);
+}
+
+module_init(tosa_power_init);
+module_exit(tosa_power_exit);
diff --git a/drivers/leds/leds-tosa.c b/drivers/leds/leds-tosa.c
index fb2416a..b4498b5 100644
--- a/drivers/leds/leds-tosa.c
+++ b/drivers/leds/leds-tosa.c
@@ -46,7 +46,7 @@ static void tosaled_green_set(struct led_classdev *led_cdev,
static struct led_classdev tosa_amber_led = {
.name = "tosa:amber",
- .default_trigger = "sharpsl-charge",
+ .default_trigger = "main-battery-charging",
.brightness_set = tosaled_amber_set,
};
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 58c806e..e3a9c37 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -49,4 +49,11 @@ config BATTERY_OLPC
help
Say Y to enable support for the battery on the OLPC laptop.
+config BATTERY_TOSA
+ tristate "Sharp SL-6000 (tosa) battery"
+ depends on MACH_TOSA && MFD_TC6393XB
+ help
+ Say Y to enable support for the battery on the Sharp Zaurus
+ SL-6000 (tosa) models.
+
endif # POWER_SUPPLY
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index 6413ded..1e408fa 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -20,3 +20,4 @@ obj-$(CONFIG_APM_POWER) += apm_power.o
obj-$(CONFIG_BATTERY_DS2760) += ds2760_battery.o
obj-$(CONFIG_BATTERY_PMU) += pmu_battery.o
obj-$(CONFIG_BATTERY_OLPC) += olpc_battery.o
+obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o
diff --git a/drivers/power/tosa_battery.c b/drivers/power/tosa_battery.c
new file mode 100644
index 0000000..b0fd2f2
--- /dev/null
+++ b/drivers/power/tosa_battery.c
@@ -0,0 +1,458 @@
+/*
+ * Battery and Power Management code for the Sharp SL-6000x
+ *
+ * Copyright (c) 2005 Dirk Opfer
+ * Copyright (c) 2008 Dmitry Baryshkov
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/power_supply.h>
+#include <linux/wm97xx.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+
+#include <asm/mach-types.h>
+#include <asm/gpio.h>
+#include <asm/arch/tosa.h>
+
+#define BAT_TO_VOLTS(v) ((v) * 1000000 / 414)
+#define BU_TO_VOLTS(v) ((v) * 1000000 / 1266)
+/*
+ * It's pretty strange value, but that's roughly what I get from
+ * zaurus maintainer menu
+ */
+//#define BAT_TO_TEMP(t) ((t) * 10000/2000)
+#define BAT_TO_TEMP(t) (t)
+
+static DEFINE_MUTEX(bat_lock); /* protects gpio pins */
+static struct work_struct bat_work;
+
+struct tosa_bat {
+ int status;
+ struct power_supply psy;
+ int full_chrg;
+
+ struct mutex work_lock; /* protects data */
+ bool (*is_present)(struct tosa_bat *bat);
+ int gpio_full;
+ int gpio_charge_off;
+ int gpio_bat;
+ int adc_bat;
+ int gpio_temp;
+ int adc_temp;
+};
+
+static struct tosa_bat tosa_bat_main;
+static struct tosa_bat tosa_bat_jacket;
+
+static enum power_supply_property tosa_bat_main_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_PRESENT,
+};
+
+static enum power_supply_property tosa_bat_bu_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+ POWER_SUPPLY_PROP_PRESENT,
+};
+
+static unsigned long tosa_read_bat(struct tosa_bat *bat)
+{
+ unsigned long value = 0;
+
+ if (bat->gpio_bat < 0 || bat->adc_bat < 0)
+ return 0;
+
+ mutex_lock(&bat_lock);
+ gpio_set_value(bat->gpio_bat, 1);
+ mdelay(5);
+ value = wm97xx_read_aux_adc(bat->psy.dev->parent->driver_data, bat->adc_bat);
+ gpio_set_value(bat->gpio_bat, 0);
+ mutex_unlock(&bat_lock);
+ return value;
+}
+
+static unsigned long tosa_read_temp(struct tosa_bat *bat)
+{
+ unsigned long value = 0;
+
+ if (bat->gpio_temp < 0 || bat->adc_temp < 0)
+ return 0;
+
+ mutex_lock(&bat_lock);
+ gpio_set_value(bat->gpio_temp, 1);
+ mdelay(5);
+ value = wm97xx_read_aux_adc(bat->psy.dev->parent->driver_data, bat->adc_temp);
+ gpio_set_value(bat->gpio_temp, 0);
+ mutex_unlock(&bat_lock);
+ return value;
+}
+
+static int tosa_bat_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret = 0;
+ struct tosa_bat *bat = container_of(psy, struct tosa_bat, psy);
+
+ if (bat->is_present && !bat->is_present(bat)
+ && psp != POWER_SUPPLY_PROP_PRESENT) {
+ return -ENODEV;
+ }
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = bat->status;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LIPO;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = BAT_TO_VOLTS(tosa_read_bat(bat));
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ if (bat->full_chrg == -1)
+ val->intval = -1;
+ else
+ val->intval = BAT_TO_VOLTS(bat->full_chrg);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ val->intval = BAT_TO_VOLTS(1551);
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = BAT_TO_TEMP(tosa_read_temp(bat));
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = bat->is_present ? bat->is_present(bat) : 1;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static int tosa_bu_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret = 0;
+ struct tosa_bat *bat = container_of(psy, struct tosa_bat, psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LiMn;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ val->intval = 0;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+ val->intval = 3 * 1000000; /* 3 V */
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ /* I think so */
+ val->intval = BU_TO_VOLTS(tosa_read_bat(bat));
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = 1;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static bool tosa_jacket_bat_is_present(struct tosa_bat *bat) {
+ // FIXME
+ return 1;
+}
+
+static void tosa_bat_external_power_changed(struct power_supply *psy)
+{
+ schedule_work(&bat_work);
+}
+
+static irqreturn_t tosa_bat_full_isr(int irq, void *data)
+{
+ printk(KERN_ERR "bat_full irq: %d\n", gpio_get_value(irq_to_gpio(irq)));
+ schedule_work(&bat_work);
+ return IRQ_HANDLED;
+}
+
+static void tosa_bat_update(struct tosa_bat *bat)
+{
+ int old = bat->status;
+ struct power_supply *psy = &bat->psy;
+
+ mutex_lock(&bat->work_lock);
+
+ if (bat->is_present && !bat->is_present(bat)) {
+ printk(KERN_DEBUG "%s not present\n", psy->name);
+ bat->status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ bat->full_chrg = -1;
+ } else if (power_supply_am_i_supplied(psy)) {
+ if (gpio_get_value(bat->gpio_full)) {
+ printk(KERN_DEBUG "%s full\n", psy->name);
+
+ if (old == POWER_SUPPLY_STATUS_CHARGING || bat->full_chrg == -1)
+ bat->full_chrg = tosa_read_bat(bat);
+
+ gpio_set_value(bat->gpio_charge_off, 1);
+ bat->status = POWER_SUPPLY_STATUS_FULL;
+ } else {
+ printk(KERN_ERR "%s charge\n", psy->name);
+ gpio_set_value(bat->gpio_charge_off, 0);
+ bat->status = POWER_SUPPLY_STATUS_CHARGING;
+ }
+ } else {
+ printk(KERN_ERR "%s discharge\n", psy->name);
+ gpio_set_value(bat->gpio_charge_off, 1);
+ bat->status = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+
+ if (old != bat->status)
+ power_supply_changed(psy);
+
+ mutex_unlock(&bat->work_lock);
+}
+
+static void tosa_bat_work(struct work_struct *work)
+{
+ tosa_bat_update(&tosa_bat_main);
+ tosa_bat_update(&tosa_bat_jacket);
+}
+
+
+static struct tosa_bat tosa_bat_main = {
+ .status = POWER_SUPPLY_STATUS_UNKNOWN,
+ .full_chrg = -1,
+ .psy = {
+ .name = "main-battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = tosa_bat_main_props,
+ .num_properties = ARRAY_SIZE(tosa_bat_main_props),
+ .get_property = tosa_bat_get_property,
+ .external_power_changed = tosa_bat_external_power_changed,
+ .use_for_apm = 1,
+ },
+
+ .gpio_full = TOSA_GPIO_BAT0_CRG,
+ .gpio_charge_off = TOSA_TC6393XB_CHARGE_OFF,
+ .gpio_bat = TOSA_TC6393XB_BAT0_V_ON,
+ .adc_bat = WM97XX_AUX_ID3,
+ .gpio_temp = TOSA_TC6393XB_BAT1_TH_ON,
+ .adc_temp = WM97XX_AUX_ID2,
+};
+
+static struct tosa_bat tosa_bat_jacket = {
+ .status = POWER_SUPPLY_STATUS_UNKNOWN,
+ .full_chrg = -1,
+ .psy = {
+ .name = "jacket-battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = tosa_bat_main_props,
+ .num_properties = ARRAY_SIZE(tosa_bat_main_props),
+ .get_property = tosa_bat_get_property,
+ .external_power_changed = tosa_bat_external_power_changed,
+// .use_for_apm = 1,
+ },
+
+ .is_present = tosa_jacket_bat_is_present,
+ .gpio_full = TOSA_GPIO_BAT1_CRG,
+ .gpio_charge_off = TOSA_TC6393XB_CHARGE_OFF_JC,
+ .gpio_bat = TOSA_TC6393XB_BAT1_V_ON,
+ .adc_bat = WM97XX_AUX_ID3,
+ .gpio_temp = TOSA_TC6393XB_BAT0_TH_ON,
+ .adc_temp = WM97XX_AUX_ID2,
+};
+
+static struct tosa_bat tosa_bat_bu = {
+ .status = POWER_SUPPLY_STATUS_UNKNOWN,
+ .full_chrg = -1,
+
+ .psy = {
+ .name = "backup-battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = tosa_bat_bu_props,
+ .num_properties = ARRAY_SIZE(tosa_bat_bu_props),
+ .get_property = tosa_bu_get_property,
+ .external_power_changed = tosa_bat_external_power_changed,
+ },
+
+ .gpio_full = -1,
+ .gpio_charge_off = -1,
+ .gpio_bat = TOSA_TC6393XB_BU_CHRG_ON,
+ .adc_bat = WM97XX_AUX_ID4,
+ .gpio_temp = -1,
+ .adc_temp = -1,
+};
+
+static struct {
+ int gpio;
+ char *name;
+ bool output;
+ int value;
+} gpios[] = {
+ { TOSA_TC6393XB_CHARGE_OFF, "main charge off", 1, 1 },
+ { TOSA_TC6393XB_CHARGE_OFF_JC, "jacket charge off", 1, 1 },
+ { TOSA_TC6393XB_BAT_SW_ON, "battery switch", 1, 0 },
+ { TOSA_TC6393XB_BAT0_V_ON, "main battery", 1, 0 },
+ { TOSA_TC6393XB_BAT1_V_ON, "jacket battery", 1, 0 },
+ { TOSA_TC6393XB_BAT1_TH_ON, "main battery temp", 1, 0 },
+ { TOSA_TC6393XB_BAT0_TH_ON, "jacket battery temp", 1, 0 },
+ { TOSA_TC6393XB_BU_CHRG_ON, "backup battery", 1, 0 },
+ { TOSA_GPIO_BAT0_CRG, "main battery full", 0, 0 },
+ { TOSA_GPIO_BAT1_CRG, "jacket battery full", 0, 0 },
+ { TOSA_GPIO_BAT0_LOW, "main battery low", 0, 0 },
+ { TOSA_GPIO_BAT1_LOW, "jacket battery low", 0, 0 },
+};
+
+#ifdef CONFIG_PM
+static int tosa_bat_suspend(struct device *dev, pm_message_t state)
+{
+ /* do nothing */
+ return 0;
+}
+
+static int tosa_bat_resume(struct device *dev)
+{
+ schedule_work(&bat_work);
+ return 0;
+}
+#else
+#define tosa_bat_suspend NULL
+#define tosa_bat_resume NULL
+#endif
+
+static int __devinit tosa_bat_probe(struct device *dev)
+{
+ int ret;
+ int i;
+
+ if (!machine_is_tosa())
+ return -ENODEV;
+
+ for (i = 0; i < ARRAY_SIZE(gpios); i++) {
+ ret = gpio_request(gpios[i].gpio, gpios[i].name);
+ if (ret) {
+ i --;
+ goto err_gpio;
+ }
+
+ if (gpios[i].output)
+ ret = gpio_direction_output(gpios[i].gpio,
+ gpios[i].value);
+ else
+ ret = gpio_direction_input(gpios[i].gpio);
+
+ if (ret)
+ goto err_gpio;
+ }
+
+ mutex_init(&tosa_bat_main.work_lock);
+ mutex_init(&tosa_bat_jacket.work_lock);
+
+ INIT_WORK(&bat_work, tosa_bat_work);
+
+ ret = power_supply_register(dev, &tosa_bat_main.psy);
+ if (ret)
+ goto err_psy_reg_main;
+ ret = power_supply_register(dev, &tosa_bat_jacket.psy);
+ if (ret)
+ goto err_psy_reg_jacket;
+ ret = power_supply_register(dev, &tosa_bat_bu.psy);
+ if (ret)
+ goto err_psy_reg_bu;
+
+ ret = request_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG),
+ tosa_bat_full_isr, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ "main full", &tosa_bat_main);
+ if (ret)
+ goto err_req_main;
+
+ ret = request_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG),
+ tosa_bat_full_isr, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ "jacket full", &tosa_bat_jacket);
+ if (!ret) {
+ schedule_work(&bat_work);
+ return 0;
+ }
+
+ free_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG), &tosa_bat_main);
+err_req_main:
+ power_supply_unregister(&tosa_bat_bu.psy);
+err_psy_reg_bu:
+ power_supply_unregister(&tosa_bat_jacket.psy);
+err_psy_reg_jacket:
+ power_supply_unregister(&tosa_bat_main.psy);
+err_psy_reg_main:
+
+ i --;
+err_gpio:
+ for (; i >= 0; i --)
+ gpio_free(gpios[i].gpio);
+
+ return ret;
+}
+
+static int __devexit tosa_bat_remove(struct device *dev)
+{
+ int i;
+
+ free_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG), &tosa_bat_jacket);
+ free_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG), &tosa_bat_main);
+
+ power_supply_unregister(&tosa_bat_bu.psy);
+ power_supply_unregister(&tosa_bat_jacket.psy);
+ power_supply_unregister(&tosa_bat_main.psy);
+
+ for (i = ARRAY_SIZE(gpios) - 1; i >= 0; i --)
+ gpio_free(gpios[i].gpio);
+
+ return 0;
+}
+
+static struct device_driver tosa_bat_driver = {
+ .name = "wm97xx-battery",
+ .bus = &wm97xx_bus_type,
+ .owner = THIS_MODULE,
+ .probe = tosa_bat_probe,
+ .remove = __devexit_p(tosa_bat_remove),
+ .suspend = tosa_bat_suspend,
+ .resume = tosa_bat_resume,
+};
+
+static int __init tosa_bat_init(void)
+{
+ return driver_register(&tosa_bat_driver);
+}
+
+static void __exit tosa_bat_exit(void)
+{
+ driver_unregister(&tosa_bat_driver);
+}
+
+module_init(tosa_bat_init);
+module_exit(tosa_bat_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Dmitry Baryshkov");
+MODULE_DESCRIPTION("Tosa battery driver");
--
1.5.3.8
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