# CONFIG_CAVIUM_OCTEON_REFERENCE_BOARD is not set
# CONFIG_CAVIUM_OCTEON_SIMULATOR is not set
CONFIG_CFG80211_DEFAULT_PS_VALUE=0
+CONFIG_CHARGER_GPIO=y
CONFIG_CONSOLE_TRANSLATIONS=y
# CONFIG_CPU_BIG_ENDIAN is not set
# CONFIG_CPU_CAVIUM_OCTEON is not set
#include <linux/spi/spi_gpio.h>
#include <linux/power_supply.h>
#include <linux/power/jz4740-battery.h>
+#include <linux/power/gpio-charger.h>
#include <linux/mmc/jz4740_mmc.h>
/* Battery */
static struct jz_batt_info qi_lb60_battery_pdata = {
- .dc_dect_gpio = GPIO_DC_DETE_N,
- .usb_dect_gpio = GPIO_USB_DETE,
.charg_stat_gpio = GPIO_CHARG_STAT_N,
.min_voltag = 3600000,
.batt_tech = POWER_SUPPLY_TECHNOLOGY_LIPO,
};
+static char *qi_lb60_batteries[] = {
+ "battery",
+};
+
+static struct gpio_charger_platform_data qi_lb60_charger_pdata = {
+ .name = "USB",
+ .type = POWER_SUPPLY_TYPE_USB,
+ .gpio = GPIO_USB_DETE,
+ .gpio_active_low = 1,
+ .batteries = qi_lb60_batteries,
+ .num_batteries = ARRAY_SIZE(qi_lb60_batteries),
+};
+
+static struct platform_device qi_lb60_charger_device = {
+ .name = "gpio-charger",
+ .dev = {
+ .platform_data = &qi_lb60_charger_pdata,
+ },
+};
+
/* GPIO Key: power */
static struct gpio_keys_button qi_lb60_gpio_keys_buttons[] = {
[0] = {
&jz4740_adc_device,
&jz4740_battery_device,
&qi_lb60_gpio_keys,
+ &qi_lb60_charger_device,
};
static void __init board_gpio_setup(void)
--- /dev/null
+/*
+ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
+ * Driver for chargers indicating their status through a GPIO pin
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+
+#include <linux/power/gpio-charger.h>
+
+struct gpio_charger {
+ const struct gpio_charger_platform_data *pdata;
+
+ int irq;
+
+ struct power_supply charger;
+};
+
+static irqreturn_t gpio_charger_irq(int irq, void *devid)
+{
+ struct power_supply *charger = devid;
+ power_supply_changed(charger);
+
+ return IRQ_HANDLED;
+}
+
+static inline struct gpio_charger *psy_to_gpio_charger(struct power_supply *psy)
+{
+ return container_of(psy, struct gpio_charger, charger);
+}
+
+static int gpio_charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct gpio_charger *gpio_charger = psy_to_gpio_charger(psy);
+ const struct gpio_charger_platform_data *pdata = gpio_charger->pdata;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = gpio_get_value(pdata->gpio);
+ val->intval ^= pdata->gpio_active_low;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static enum power_supply_property gpio_charger_properties[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static int __devinit gpio_charger_probe(struct platform_device *pdev)
+{
+ const struct gpio_charger_platform_data *pdata = pdev->dev.platform_data;
+ struct gpio_charger *gpio_charger;
+ struct power_supply *charger;
+ int ret;
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "No platform data");
+ return -EINVAL;
+ }
+
+ gpio_charger = kzalloc(sizeof(*gpio_charger), GFP_KERNEL);
+
+ charger = &gpio_charger->charger;
+
+ charger->name = pdata->name;
+ charger->type = pdata->type;
+ charger->properties = gpio_charger_properties;
+ charger->num_properties = ARRAY_SIZE(gpio_charger_properties);
+ charger->get_property = gpio_charger_get_property;
+ charger->supplied_to = pdata->batteries;
+ charger->num_supplicants = pdata->num_batteries;
+
+ if (gpio_is_valid(pdata->gpio)) {
+ ret = gpio_request(pdata->gpio, dev_name(&pdev->dev));
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to request gpio pin: %d\n", ret);
+ goto err;
+ }
+ ret = gpio_direction_input(pdata->gpio);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to set gpio to input: %d\n", ret);
+ goto err_gpio_free;
+ }
+
+ gpio_charger->irq = gpio_to_irq(pdata->gpio);
+ if (gpio_charger->irq >= 0) {
+ ret = request_irq(gpio_charger->irq, gpio_charger_irq,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ dev_name(&pdev->dev), charger);
+ if (ret) {
+ dev_warn(&pdev->dev, "Failed to request online gpio irq: %d\n", ret);
+ gpio_charger->irq = -1;
+ }
+ }
+ }
+
+ ret = power_supply_register(&pdev->dev, charger);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to register power supply: %d\n", ret);
+ goto err_gpio_free;
+ }
+
+ gpio_charger->pdata = pdata;
+ platform_set_drvdata(pdev, gpio_charger);
+
+ return 0;
+
+err_gpio_free:
+ if (gpio_is_valid(pdata->gpio)) {
+ if (gpio_charger->irq >= 0)
+ free_irq(gpio_charger->irq, charger);
+ gpio_free(pdata->gpio);
+ }
+err:
+ return ret;
+}
+
+static int __devexit gpio_charger_remove(struct platform_device *pdev)
+{
+ struct gpio_charger *gpio_charger = platform_get_drvdata(pdev);
+ const struct gpio_charger_platform_data *pdata = gpio_charger->pdata;
+
+ power_supply_unregister(&gpio_charger->charger);
+
+ if (gpio_is_valid(pdata->gpio)) {
+ if (gpio_charger->irq >= 0)
+ free_irq(gpio_charger->irq, &gpio_charger->charger);
+ gpio_free(pdata->gpio);
+ }
+
+ platform_set_drvdata(pdev, NULL);
+ kfree(gpio_charger);
+
+ return 0;
+}
+
+static struct platform_driver gpio_charger_driver = {
+ .probe = gpio_charger_probe,
+ .remove = __devexit_p(gpio_charger_remove),
+ .driver = {
+ .name = "gpio-charger",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init gpio_charger_init(void)
+{
+ return platform_driver_register(&gpio_charger_driver);
+}
+module_init(gpio_charger_init);
+
+static void gpio_charger_exit(void)
+{
+ platform_driver_unregister(&gpio_charger_driver);
+}
+module_exit(gpio_charger_exit);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("Driver for chargers indicating their status through a gpio");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:gpio-charger");
#include <linux/jz4740-adc.h>
struct jz_battery_info {
- struct power_supply usb;
struct power_supply bat;
- struct power_supply ac;
int bat_status;
struct jz_batt_info *pdata;
struct mutex work_lock;
#define ps_to_jz_battery(x) container_of((x), struct jz_battery_info, bat);
/*********************************************************************
- * Power
- *********************************************************************/
-
-
-static int jz_get_power_prop(struct jz_battery_info *bat_info,
- struct power_supply *psy,
- enum power_supply_property psp,
- union power_supply_propval *val)
-{
- int gpio;
-
- if (bat_info == 0 || bat_info->pdata == 0)
- return -EINVAL;
- gpio = (psy->type == POWER_SUPPLY_TYPE_MAINS) ?
- bat_info->pdata->dc_dect_gpio :
- bat_info->pdata->usb_dect_gpio;
- if (!gpio_is_valid(gpio))
- return -EINVAL;
- switch (psp) {
- case POWER_SUPPLY_PROP_ONLINE:
- val->intval = !gpio_get_value(gpio);
- break;
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int jz_usb_get_power_prop(struct power_supply *psy,
- enum power_supply_property psp,
- union power_supply_propval *val)
-{
- struct jz_battery_info *bat_info = container_of(psy, struct jz_battery_info, usb);
- return jz_get_power_prop(bat_info, psy, psp, val);
-}
-
-static int jz_ac_get_power_prop(struct power_supply *psy,
- enum power_supply_property psp,
- union power_supply_propval *val)
-{
- struct jz_battery_info *bat_info = container_of(psy, struct jz_battery_info, ac);
- return jz_get_power_prop(bat_info, psy, psp, val);
-}
-
-
-static enum power_supply_property jz_power_props[] = {
- POWER_SUPPLY_PROP_ONLINE,
-};
-
-static struct power_supply jz_ac = {
- .name = "ac",
- .type = POWER_SUPPLY_TYPE_MAINS,
- .properties = jz_power_props,
- .num_properties = ARRAY_SIZE(jz_power_props),
- .get_property = jz_ac_get_power_prop,
-};
-
-static struct power_supply jz_usb = {
- .name = "usb",
- .type = POWER_SUPPLY_TYPE_USB,
- .properties = jz_power_props,
- .num_properties = ARRAY_SIZE(jz_power_props),
- .get_property = jz_usb_get_power_prop,
-};
-
-
-/*********************************************************************
* Battery properties
*********************************************************************/
{
int ret = 0;
struct jz_battery_info *bat_info;
-
+
+ if (!pdev->dev.platform_data) {
+ dev_err(&pdev->dev, "Please set battery info\n");
+ return -EINVAL;
+ }
+
bat_info = kzalloc(sizeof(struct jz_battery_info), GFP_KERNEL);
if (!bat_info) {
return -ENOMEM;
}
- if (!pdev->dev.platform_data) {
- dev_err(&pdev->dev, "Please set battery info\n");
- ret = -EINVAL;
- goto err_platform_data;
- }
platform_set_drvdata(pdev, bat_info);
bat_info->pdata = pdev->dev.platform_data;
bat_info->bat = bat_ps;
- bat_info->usb = jz_usb;
- bat_info->ac = jz_ac;
mutex_init(&bat_info->work_lock);
INIT_DELAYED_WORK(&bat_info->bat_work, jz_bat_work);
- if (gpio_is_valid(bat_info->pdata->dc_dect_gpio)) {
- ret = gpio_request(bat_info->pdata->dc_dect_gpio, "AC/DC DECT");
- if (ret) {
- dev_err(&pdev->dev, "ac/dc dect gpio request failed.\n");
-
- goto err_dc_gpio_request;
- }
- ret = gpio_direction_input(bat_info->pdata->dc_dect_gpio);
- if (ret) {
- dev_err(&pdev->dev, "ac/dc dect gpio direction failed.\n");
-
- goto err_dc_gpio_direction;
- }
- }
-
- if (gpio_is_valid(bat_info->pdata->usb_dect_gpio)) {
- ret = gpio_request(bat_info->pdata->usb_dect_gpio, "USB DECT");
- if (ret) {
- dev_err(&pdev->dev, "usb dect gpio request failed.\n");
-
- goto err_usb_gpio_request;
- }
- ret = gpio_direction_input(bat_info->pdata->usb_dect_gpio);
- if (ret) {
- dev_err(&pdev->dev, "usb dect gpio set direction failed.\n");
- goto err_usb_gpio_direction;
- }
-
- jz_gpio_disable_pullup(bat_info->pdata->usb_dect_gpio);
- /* TODO: Use generic gpio is better */
- }
-
if (gpio_is_valid(bat_info->pdata->charg_stat_gpio)) {
ret = gpio_request(bat_info->pdata->charg_stat_gpio, "CHARG STAT");
if (ret) {
dev_err(&pdev->dev, "charger state gpio set direction failed.\n");
goto err_charg_gpio_direction;
}
- }
-
- if (gpio_is_valid(bat_info->pdata->dc_dect_gpio)) {
- ret = power_supply_register(&pdev->dev, &bat_info->ac);
- if (ret) {
- dev_err(&pdev->dev, "power supply ac/dc register failed.\n");
- goto err_power_register_ac;
- }
- }
-
- if (gpio_is_valid(bat_info->pdata->usb_dect_gpio)) {
- ret = power_supply_register(&pdev->dev, &bat_info->usb);
- if (ret) {
- dev_err(&pdev->dev, "power supply usb register failed.\n");
- goto err_power_register_usb;
- }
- }
- if (gpio_is_valid(bat_info->pdata->charg_stat_gpio)) {
ret = power_supply_register(&pdev->dev, &bat_info->bat);
if (ret) {
dev_err(&pdev->dev, "power supply battery register failed.\n");
return ret;
err_power_register_bat:
- power_supply_unregister(&bat_info->usb);
-err_power_register_usb:
- power_supply_unregister(&bat_info->ac);
-err_power_register_ac:
err_charg_gpio_direction:
gpio_free(bat_info->pdata->charg_stat_gpio);
err_charg_gpio_request:
-err_usb_gpio_direction:
- gpio_free(bat_info->pdata->usb_dect_gpio);
-err_usb_gpio_request:
-err_dc_gpio_direction:
- gpio_free(bat_info->pdata->dc_dect_gpio);
-err_dc_gpio_request:
-err_platform_data:
kfree(bat_info);
return ret;
}
static int jz_bat_remove(struct platform_device *pdev)
{
struct jz_battery_info *bat_info = platform_get_drvdata(pdev);
-
+
if (bat_info->pdata) {
- if (gpio_is_valid(bat_info->pdata->dc_dect_gpio))
- gpio_free(bat_info->pdata->dc_dect_gpio);
- if (gpio_is_valid(bat_info->pdata->usb_dect_gpio))
- gpio_free(bat_info->pdata->usb_dect_gpio);
if (gpio_is_valid(bat_info->pdata->charg_stat_gpio))
gpio_free(bat_info->pdata->charg_stat_gpio);
}
power_supply_unregister(&bat_ps);
- power_supply_unregister(&jz_ac);
- power_supply_unregister(&jz_usb);
return 0;
}
--- /dev/null
+/*
+ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef __LINUX_POWER_GPIO_CHARGER_H__
+#define __LINUX_POWER_GPIO_CHARGER_H__
+
+struct gpio_charger_platform_data {
+ const char *name;
+ enum power_supply_type type;
+ int gpio;
+ int gpio_active_low;
+
+ char **batteries;
+ size_t num_batteries;
+};
+
+#endif
#define __JZ4740_BATTERY_H
struct jz_batt_info {
- int dc_dect_gpio; /* GPIO port of DC charger detection */
- int usb_dect_gpio; /* GPIO port of USB charger detection */
int charg_stat_gpio; /* GPIO port of Charger state */
int min_voltag; /* Mininal battery voltage in uV */
--- /dev/null
+--- a/drivers/power/Makefile 2010-02-03 13:16:32.000000000 +0100
++++ b/drivers/power/Makefile 2010-02-01 14:55:46.000000000 +0100
+@@ -30,3 +30,4 @@
+ obj-$(CONFIG_BATTERY_MAX17040) += max17040_battery.o
+ obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
+ obj-$(CONFIG_BATTERY_JZ4740) += jz4740-battery.o
++obj-$(CONFIG_CHARGER_GPIO) += gpio-charger.o
+--- a/drivers/power/Kconfig 2010-02-03 13:16:32.000000000 +0100
++++ b/drivers/power/Kconfig 2010-02-01 14:58:24.000000000 +0100
+@@ -121,4 +121,11 @@
+ This driver can be build as a module. If so, the module will be
+ called jz4740-battery.
+
++config CHARGER_GPIO
++ tristate "GPIO charger"
++ depends on GPIOLIB
++ help
++ Say Y to include support for chargers indicating their status through
++ a GPIO pin.
++
+ endif # POWER_SUPPLY
projects / openwrt.git / commitdiff