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mirror of git://projects.qi-hardware.com/openwrt-xburst.git synced 2024-11-24 23:27:30 +02:00

jz_battery: fix bug cause kernel panic.

all about container_of macro.

Signed-off-by: JieJing.Zhang <kzjeef@gmail.com>
This commit is contained in:
JieJing.Zhang 2009-10-20 02:47:31 +08:00 committed by Xiangfu Liu
parent 110c87a5f7
commit 907a34b80e

View File

@ -24,6 +24,9 @@
#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;
@ -31,26 +34,27 @@ struct jz_battery_info {
struct delayed_work bat_work;
};
static struct jz_battery_info jz_main_bat = {
.bat_status = POWER_SUPPLY_STATUS_DISCHARGING,
.pdata = 0,
};
#define ps_to_jz_battery(x) container_of((x), struct jz_battery_info, bat);
/*********************************************************************
* Power
*********************************************************************/
static int jz_get_power_prop(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
if (!jz_main_bat.pdata)
return -EINVAL;
int gpio = (psy->type == POWER_SUPPLY_TYPE_MAINS) ? jz_main_bat.pdata->dc_dect_gpio : jz_main_bat.pdata->usb_dect_gpio;
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);
@ -62,6 +66,23 @@ static int jz_get_power_prop(struct power_supply *psy,
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,
};
@ -71,7 +92,7 @@ static struct power_supply jz_ac = {
.type = POWER_SUPPLY_TYPE_MAINS,
.properties = jz_power_props,
.num_properties = ARRAY_SIZE(jz_power_props),
.get_property = jz_get_power_prop,
.get_property = jz_ac_get_power_prop,
};
static struct power_supply jz_usb = {
@ -79,7 +100,7 @@ static struct power_supply jz_usb = {
.type = POWER_SUPPLY_TYPE_USB,
.properties = jz_power_props,
.num_properties = ARRAY_SIZE(jz_power_props),
.get_property = jz_get_power_prop,
.get_property = jz_usb_get_power_prop,
};
@ -87,34 +108,31 @@ static struct power_supply jz_usb = {
* Battery properties
*********************************************************************/
static long jz_read_bat(struct power_supply *bat_ps)
static long jz_read_bat(struct power_supply *psy)
{
struct jz_battery_info *bat_info = ps_to_jz_battery(psy);
enum jz_adc_battery_scale scale;
if (!jz_main_bat.pdata)
return -EINVAL;
if (jz_main_bat.pdata->max_voltag > 2500000)
if (bat_info->pdata->max_voltag > 2500000)
scale = JZ_ADC_BATTERY_SCALE_7V5;
else
scale = JZ_ADC_BATTERY_SCALE_2V5;
return jz4740_adc_read_battery_voltage(bat_ps->dev->parent->parent, scale);
return jz4740_adc_read_battery_voltage(psy->dev->parent->parent, scale);
}
static int jz_bat_get_capacity(struct power_supply *bat_ps)
static int jz_bat_get_capacity(struct power_supply *psy)
{
int ret;
struct jz_battery_info *bat_info = ps_to_jz_battery(psy);
if (!jz_main_bat.pdata)
return -EINVAL;
ret = jz_read_bat(bat_ps);
ret = jz_read_bat(psy);
if (ret < 0)
return ret;
ret = (ret - jz_main_bat.pdata->min_voltag) * 100
/ (jz_main_bat.pdata->max_voltag - jz_main_bat.pdata->min_voltag);
ret = (ret - bat_info->pdata->min_voltag) * 100
/ (bat_info->pdata->max_voltag - bat_info->pdata->min_voltag);
if (ret > 100)
ret = 100;
@ -124,47 +142,46 @@ static int jz_bat_get_capacity(struct power_supply *bat_ps)
return ret;
}
static int jz_bat_get_property(struct power_supply *bat_ps,
static int jz_bat_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
if (!jz_main_bat.pdata)
return -EINVAL;
struct jz_battery_info *bat_info = ps_to_jz_battery(psy)
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
val->intval = jz_main_bat.bat_status;
val->intval = bat_info->bat_status;
break;
case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = jz_main_bat.pdata->batt_tech;
val->intval = bat_info->pdata->batt_tech;
break;
case POWER_SUPPLY_PROP_HEALTH:
if(jz_read_bat(bat_ps) < jz_main_bat.pdata->min_voltag) {
dev_dbg(bat_ps->dev, "%s: battery is dead,"
if(jz_read_bat(psy) < bat_info->pdata->min_voltag) {
dev_dbg(psy->dev, "%s: battery is dead,"
"voltage too low!\n", __func__);
val->intval = POWER_SUPPLY_HEALTH_DEAD;
} else {
dev_dbg(bat_ps->dev, "%s: battery is good,"
dev_dbg(psy->dev, "%s: battery is good,"
"voltage normal.\n", __func__);
val->intval = POWER_SUPPLY_HEALTH_GOOD;
}
break;
case POWER_SUPPLY_PROP_CAPACITY:
val->intval = jz_bat_get_capacity(bat_ps);
dev_dbg(bat_ps->dev, "%s: battery_capacity = %d\n",
val->intval = jz_bat_get_capacity(psy);
dev_dbg(psy->dev, "%s: battery_capacity = %d\n",
__func__, val->intval);
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = jz_read_bat(bat_ps);
val->intval = jz_read_bat(psy);
if (val->intval < 0)
return val->intval;
break;
case POWER_SUPPLY_PROP_VOLTAGE_MAX:
case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
val->intval = jz_main_bat.pdata->max_voltag;
val->intval = bat_info->pdata->max_voltag;
break;
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
val->intval = jz_main_bat.pdata->min_voltag;
val->intval = bat_info->pdata->min_voltag;
break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = 1;
@ -175,10 +192,12 @@ static int jz_bat_get_property(struct power_supply *bat_ps,
return 0;
}
static void jz_bat_external_power_changed(struct power_supply *bat_ps)
static void jz_bat_external_power_changed(struct power_supply *psy)
{
cancel_delayed_work(&jz_main_bat.bat_work);
queue_delayed_work(jz_main_bat.monitor_wqueue, &jz_main_bat.bat_work, HZ / 8);
struct jz_battery_info *bat_info = ps_to_jz_battery(psy);
cancel_delayed_work(&bat_info->bat_work);
queue_delayed_work(bat_info->monitor_wqueue, &bat_info->bat_work, HZ / 8);
}
static char *status_text[] = {
@ -188,40 +207,42 @@ static char *status_text[] = {
[POWER_SUPPLY_STATUS_NOT_CHARGING] = "Not charging",
};
static void jz_bat_update(struct power_supply *bat_ps)
static void jz_bat_update(struct power_supply *psy)
{
int old_status = jz_main_bat.bat_status;
struct jz_battery_info *bat_info = ps_to_jz_battery(psy);
int old_status = bat_info->bat_status;
static unsigned long old_batt_vol = 0;
unsigned long batt_vol = jz_read_bat(bat_ps);
mutex_lock(&jz_main_bat.work_lock);
unsigned long batt_vol = jz_read_bat(psy);
mutex_lock(&bat_info->work_lock);
if (!jz_main_bat.pdata)
goto err;
if (gpio_is_valid(bat_info->pdata->charg_stat_gpio)) {
if(!gpio_get_value(bat_info->pdata->charg_stat_gpio))
bat_info->bat_status = POWER_SUPPLY_STATUS_CHARGING;
else
bat_info->bat_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
dev_dbg(psy->dev, "%s: battery status=%s\n",
__func__, status_text[bat_info->bat_status]);
if (old_status != bat_info->bat_status) {
dev_dbg(psy->dev, "%s %s -> %s\n",
psy->name,
status_text[old_status],
status_text[bat_info->bat_status]);
if (!gpio_is_valid(jz_main_bat.pdata->charg_stat_gpio))
goto err;
if(!gpio_get_value(jz_main_bat.pdata->charg_stat_gpio))
jz_main_bat.bat_status = POWER_SUPPLY_STATUS_CHARGING;
else
jz_main_bat.bat_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
dev_dbg(bat_ps->dev, "%s: battery status=%s\n",
__func__, status_text[jz_main_bat.bat_status]);
if ((old_status != jz_main_bat.bat_status) ||
(old_batt_vol - batt_vol > 50000)) {
dev_dbg(bat_ps->dev, "%s %s -> %s\n",
bat_ps->name,
status_text[old_status],
status_text[jz_main_bat.bat_status]);
power_supply_changed(bat_ps);
power_supply_changed(psy);
}
}
old_batt_vol = batt_vol;
err:
mutex_unlock(&jz_main_bat.work_lock);
if (old_batt_vol - batt_vol > 50000) {
dev_dbg(psy->dev, "voltage change : %ld -> %ld\n",
old_batt_vol, batt_vol);
power_supply_changed(psy);
old_batt_vol = batt_vol;
}
mutex_unlock(&bat_info->work_lock);
}
static enum power_supply_property jz_bat_main_props[] = {
@ -249,24 +270,31 @@ static void jz_bat_work(struct work_struct *work)
{
/* query interval too small will increase system workload*/
const int interval = HZ * 30;
struct jz_battery_info *bat_info = container_of(work,struct jz_battery_info, bat_work.work);
jz_bat_update(&bat_ps);
queue_delayed_work(jz_main_bat.monitor_wqueue, &jz_main_bat.bat_work, interval);
jz_bat_update(&bat_info->bat);
queue_delayed_work(bat_info->monitor_wqueue,
&bat_info->bat_work, interval);
}
#ifdef CONFIG_PM
static int jz_bat_suspend(struct platform_device *dev, pm_message_t state)
static int jz_bat_suspend(struct platform_device *pdev, pm_message_t state)
{
jz_main_bat.bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
struct jz_battery_info *bat_info = platform_get_drvdata(pdev);
bat_info->bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
return 0;
}
static int jz_bat_resume(struct platform_device *dev)
static int jz_bat_resume(struct platform_device *pdev)
{
jz_main_bat.bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
cancel_delayed_work(&jz_main_bat.bat_work);
queue_delayed_work(jz_main_bat.monitor_wqueue, &jz_main_bat.bat_work, HZ/10);
struct jz_battery_info *bat_info = platform_get_drvdata(pdev);
bat_info->bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
cancel_delayed_work(&bat_info->bat_work);
queue_delayed_work(bat_info->monitor_wqueue, &bat_info->bat_work, HZ/10);
return 0;
}
@ -275,29 +303,38 @@ static int jz_bat_resume(struct platform_device *dev)
#define jz_bat_resume NULL
#endif
static int __devinit jz_bat_probe(struct platform_device *pdev)
static int jz_bat_probe(struct platform_device *pdev)
{
int ret = 0;
struct jz_battery_info *bat_info;
bat_info = kzalloc(sizeof(struct jz_battery_info), GFP_KERNEL);
printk("JZ battery init.\n");
mutex_init(&jz_main_bat.work_lock);
INIT_DELAYED_WORK(&jz_main_bat.bat_work, jz_bat_work);
if (!bat_info) {
return -ENOMEM;
}
if (!pdev->dev.platform_data) {
dev_err(&pdev->dev, "Please set battery info\n");
return -EINVAL;
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);
jz_main_bat.pdata = pdev->dev.platform_data;
if (gpio_is_valid(jz_main_bat.pdata->dc_dect_gpio)) {
ret = gpio_request(jz_main_bat.pdata->dc_dect_gpio, "AC/DC DECT");
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(jz_main_bat.pdata->dc_dect_gpio);
ret = gpio_direction_input(bat_info->pdata->dc_dect_gpio);
if (ret) {
dev_err(&pdev->dev, "ac/dc dect gpio direction failed.\n");
@ -305,90 +342,98 @@ static int __devinit jz_bat_probe(struct platform_device *pdev)
}
}
if (gpio_is_valid(jz_main_bat.pdata->usb_dect_gpio)) {
ret = gpio_request(jz_main_bat.pdata->usb_dect_gpio, "USB DECT");
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(jz_main_bat.pdata->usb_dect_gpio);
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(jz_main_bat.pdata->usb_dect_gpio);
jz_gpio_disable_pullup(bat_info->pdata->usb_dect_gpio);
/* TODO: Use generic gpio is better */
}
if (gpio_is_valid(jz_main_bat.pdata->charg_stat_gpio)) {
ret = gpio_request(jz_main_bat.pdata->charg_stat_gpio, "CHARG STAT");
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 request failed.\n");
goto err_charg_gpio_request;
}
ret = gpio_direction_input(jz_main_bat.pdata->charg_stat_gpio);
ret = gpio_direction_input(bat_info->pdata->charg_stat_gpio);
if (ret) {
dev_err(&pdev->dev, "charger state gpio set direction failed.\n");
goto err_charg_gpio_direction;
}
}
ret = power_supply_register(&pdev->dev, &jz_ac);
if (ret) {
dev_err(&pdev->dev, "power supply ac/dc register failed.\n");
goto err_power_register_ac;
}
ret = power_supply_register(&pdev->dev, &jz_usb);
if (ret) {
dev_err(&pdev->dev, "power supply usb register failed.\n");
goto err_power_register_usb;
}
ret = power_supply_register(&pdev->dev, &bat_ps);
if (ret) {
dev_err(&pdev->dev, "power supply battery register failed.\n");
goto err_power_register_bat;
}
if (!ret) {
jz_main_bat.monitor_wqueue = create_singlethread_workqueue("jz_battery");
if (!jz_main_bat.monitor_wqueue) {
return -ESRCH;
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;
}
queue_delayed_work(jz_main_bat.monitor_wqueue, &jz_main_bat.bat_work, HZ * 1);
}
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");
goto err_power_register_bat;
} else {
bat_info->monitor_wqueue = create_singlethread_workqueue("jz_battery");
if (!bat_info->monitor_wqueue) {
return -ESRCH;
}
queue_delayed_work(bat_info->monitor_wqueue, &bat_info->bat_work, HZ * 1);
}
}
printk(KERN_INFO "jz_bat init success.\n");
return ret;
err_power_register_bat:
power_supply_unregister(&jz_usb);
power_supply_unregister(&bat_info->usb);
err_power_register_usb:
power_supply_unregister(&jz_ac);
power_supply_unregister(&bat_info->ac);
err_power_register_ac:
err_charg_gpio_direction:
gpio_free(jz_main_bat.pdata->charg_stat_gpio);
gpio_free(bat_info->pdata->charg_stat_gpio);
err_charg_gpio_request:
err_usb_gpio_direction:
gpio_free(jz_main_bat.pdata->usb_dect_gpio);
gpio_free(bat_info->pdata->usb_dect_gpio);
err_usb_gpio_request:
err_dc_gpio_direction:
gpio_free(jz_main_bat.pdata->dc_dect_gpio);
gpio_free(bat_info->pdata->dc_dect_gpio);
err_dc_gpio_request:
err_platform_data:
kfree(bat_info);
return ret;
}
static int __devexit jz_bat_remove(struct platform_device *dev)
static int jz_bat_remove(struct platform_device *pdev)
{
if (jz_main_bat.pdata) {
if (gpio_is_valid(jz_main_bat.pdata->dc_dect_gpio))
gpio_free(jz_main_bat.pdata->dc_dect_gpio);
if (gpio_is_valid(jz_main_bat.pdata->usb_dect_gpio))
gpio_free(jz_main_bat.pdata->usb_dect_gpio);
if (gpio_is_valid(jz_main_bat.pdata->charg_stat_gpio))
gpio_free(jz_main_bat.pdata->charg_stat_gpio);
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);