348 lines
8.6 KiB
C
348 lines
8.6 KiB
C
#define pr_fmt(x) KBUILD_MODNAME ": " x "\n"
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/device.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/param.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/power_supply.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/ktime.h>
|
|
#include <linux/of.h>
|
|
#include <linux/timekeeping.h>
|
|
#include <linux/types.h>
|
|
#include <linux/string.h>
|
|
#include <asm/irq.h>
|
|
#include <linux/cdev.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <linux/gpio/consumer.h>
|
|
#include <linux/kthread.h>
|
|
#include <linux/freezer.h>
|
|
#include <linux/err.h>
|
|
#include <linux/mfd/axp2101.h>
|
|
#include "axp803_charger.h"
|
|
|
|
struct axp803_ac_power {
|
|
char *name;
|
|
struct device *dev;
|
|
struct axp_config_info dts_info;
|
|
struct regmap *regmap;
|
|
struct power_supply *ac_supply;
|
|
struct delayed_work ac_supply_mon;
|
|
};
|
|
|
|
static int axp803_ac_set_vhold(struct axp803_ac_power *ac_power, int vol)
|
|
{
|
|
unsigned int tmp;
|
|
struct regmap *map = ac_power->regmap;
|
|
|
|
if (vol) {
|
|
regmap_update_bits(map, AXP803_CHARGE_AC_SET, 0x40, 0x40);
|
|
if (vol >= 4000 && vol <= 4700) {
|
|
tmp = (vol - 4000)/100;
|
|
regmap_update_bits(map, AXP803_CHARGE_AC_SET,
|
|
0x7 << 3, tmp << 3);
|
|
} else {
|
|
pr_err("set ac limit voltage error, %d mV\n", vol);
|
|
}
|
|
} else {
|
|
regmap_update_bits(map, AXP803_CHARGE_AC_SET, 0x40, 0x00);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int axp803_ac_set_ihold(struct axp803_ac_power *ac_power, int cur)
|
|
{
|
|
unsigned int tmp;
|
|
struct regmap *map = ac_power->regmap;
|
|
|
|
if (cur) {
|
|
if (cur >= 1500 && cur <= 4000) {
|
|
tmp = (cur - 1500) / 500;
|
|
regmap_update_bits(map, AXP803_CHARGE_AC_SET, 0x7, tmp);
|
|
} else {
|
|
pr_err("set ac limit current error, %d mA\n", cur);
|
|
}
|
|
} else {
|
|
regmap_update_bits(map, AXP803_CHARGE_AC_SET, 0x40, 0x40);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static enum power_supply_property axp803_ac_props[] = {
|
|
POWER_SUPPLY_PROP_MODEL_NAME,
|
|
POWER_SUPPLY_PROP_PRESENT,
|
|
POWER_SUPPLY_PROP_ONLINE,
|
|
};
|
|
|
|
static int axp803_ac_get_property(struct power_supply *psy,
|
|
enum power_supply_property psp,
|
|
union power_supply_propval *val)
|
|
{
|
|
int ret = 0;
|
|
unsigned int reg_value;
|
|
struct axp803_ac_power *ac_power = power_supply_get_drvdata(psy);
|
|
|
|
switch (psp) {
|
|
case POWER_SUPPLY_PROP_MODEL_NAME:
|
|
val->strval = psy->desc->name;
|
|
break;
|
|
case POWER_SUPPLY_PROP_PRESENT:
|
|
ret = regmap_read(ac_power->regmap, AXP803_STATUS, ®_value);
|
|
if (ret)
|
|
return ret;
|
|
val->intval = !!(reg_value & AXP803_STATUS_AC_PRESENT);
|
|
break;
|
|
case POWER_SUPPLY_PROP_ONLINE:
|
|
ret = regmap_read(ac_power->regmap, AXP803_STATUS, ®_value);
|
|
if (ret)
|
|
return ret;
|
|
val->intval = !!(reg_value & AXP803_STATUS_AC_USED);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct power_supply_desc axp803_ac_desc = {
|
|
.name = "axp803-ac",
|
|
.type = POWER_SUPPLY_TYPE_MAINS,
|
|
.get_property = axp803_ac_get_property,
|
|
.properties = axp803_ac_props,
|
|
.num_properties = ARRAY_SIZE(axp803_ac_props),
|
|
};
|
|
|
|
static int axp803_ac_power_init(struct axp803_ac_power *ac_power)
|
|
{
|
|
struct axp_config_info *axp_config = &ac_power->dts_info;
|
|
|
|
axp803_ac_set_vhold(ac_power, axp_config->pmu_ac_vol);
|
|
axp803_ac_set_ihold(ac_power, axp_config->pmu_ac_cur);
|
|
return 0;
|
|
}
|
|
|
|
static irqreturn_t axp803_ac_power_irq(int irq, void *data)
|
|
{
|
|
struct axp803_ac_power *ac_power = data;
|
|
|
|
power_supply_changed(ac_power->ac_supply);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
enum axp803_ac_power_virqs {
|
|
AXP803_VIRQ_ACIN,
|
|
AXP803_VIRQ_ACRE,
|
|
|
|
AXP803_AC_VIRQ_MAX_VIRQ,
|
|
};
|
|
|
|
static struct axp_interrupts axp803_ac_irq[] = {
|
|
[AXP803_VIRQ_ACIN] = {"ac in", axp803_ac_power_irq},
|
|
[AXP803_VIRQ_ACRE] = {"ac out", axp803_ac_power_irq},
|
|
};
|
|
|
|
static void axp803_ac_power_monitor(struct work_struct *work)
|
|
{
|
|
struct axp803_ac_power *ac_power =
|
|
container_of(work, typeof(*ac_power), ac_supply_mon.work);
|
|
|
|
schedule_delayed_work(&ac_power->ac_supply_mon, msecs_to_jiffies(500));
|
|
}
|
|
|
|
static int axp803_ac_power_dt_parse(struct axp803_ac_power *ac_power)
|
|
{
|
|
struct axp_config_info *axp_config = &ac_power->dts_info;
|
|
struct device_node *node = ac_power->dev->of_node;
|
|
|
|
if (!of_device_is_available(node)) {
|
|
pr_err("%s: failed\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
AXP_OF_PROP_READ(pmu_ac_vol, 4400);
|
|
AXP_OF_PROP_READ(pmu_ac_cur, 0);
|
|
|
|
axp_config->wakeup_ac_in =
|
|
of_property_read_bool(node, "wakeup_ac_in");
|
|
axp_config->wakeup_ac_out =
|
|
of_property_read_bool(node, "wakeup_ac_out");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int axp803_ac_power_probe(struct platform_device *pdev)
|
|
{
|
|
struct axp20x_dev *axp_dev = dev_get_drvdata(pdev->dev.parent);
|
|
struct power_supply_config psy_cfg = {};
|
|
struct axp803_ac_power *ac_power;
|
|
int i, irq;
|
|
int ret = 0;
|
|
|
|
if (!axp_dev->irq) {
|
|
pr_err("can not register axp803 ac without irq\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ac_power = devm_kzalloc(&pdev->dev, sizeof(*ac_power), GFP_KERNEL);
|
|
if (!ac_power) {
|
|
pr_err("axp803 ac power alloc failed\n");
|
|
ret = -ENOMEM;
|
|
return ret;
|
|
}
|
|
|
|
ac_power->name = "axp803-ac-power";
|
|
ac_power->dev = &pdev->dev;
|
|
ac_power->regmap = axp_dev->regmap;
|
|
|
|
platform_set_drvdata(pdev, ac_power);
|
|
|
|
ret = axp803_ac_power_dt_parse(ac_power);
|
|
if (ret) {
|
|
pr_err("%s parse device tree err\n", __func__);
|
|
ret = -EINVAL;
|
|
return ret;
|
|
}
|
|
|
|
ret = axp803_ac_power_init(ac_power);
|
|
if (ret < 0) {
|
|
pr_err("axp210x init chip fail!\n");
|
|
ret = -ENODEV;
|
|
return ret;
|
|
}
|
|
|
|
psy_cfg.of_node = pdev->dev.of_node;
|
|
psy_cfg.drv_data = ac_power;
|
|
|
|
ac_power->ac_supply = devm_power_supply_register(ac_power->dev,
|
|
&axp803_ac_desc, &psy_cfg);
|
|
|
|
if (IS_ERR(ac_power->ac_supply)) {
|
|
pr_err("axp803 failed to register ac power\n");
|
|
ret = PTR_ERR(ac_power->ac_supply);
|
|
return ret;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(axp803_ac_irq); i++) {
|
|
irq = platform_get_irq_byname(pdev, axp803_ac_irq[i].name);
|
|
if (irq < 0) {
|
|
dev_warn(&pdev->dev, "No IRQ for %s: %d\n",
|
|
axp803_ac_irq[i].name, irq);
|
|
continue;
|
|
}
|
|
irq = regmap_irq_get_virq(axp_dev->regmap_irqc, irq);
|
|
ret = devm_request_any_context_irq(&pdev->dev, irq,
|
|
axp803_ac_irq[i].isr, 0,
|
|
axp803_ac_irq[i].name, ac_power);
|
|
if (ret < 0)
|
|
dev_warn(&pdev->dev, "Error requesting %s IRQ %d: %d\n",
|
|
axp803_ac_irq[i].name, irq, ret);
|
|
|
|
dev_dbg(&pdev->dev, "Requested %s IRQ %d: %d\n",
|
|
axp803_ac_irq[i].name, irq, ret);
|
|
|
|
/* we use this variable to suspend irq */
|
|
axp803_ac_irq[i].irq = irq;
|
|
}
|
|
|
|
|
|
INIT_DELAYED_WORK(&ac_power->ac_supply_mon, axp803_ac_power_monitor);
|
|
schedule_delayed_work(&ac_power->ac_supply_mon, msecs_to_jiffies(500));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int axp803_ac_power_remove(struct platform_device *pdev)
|
|
{
|
|
struct axp803_ac_power *ac_power = platform_get_drvdata(pdev);
|
|
|
|
if (ac_power->ac_supply)
|
|
power_supply_unregister(ac_power->ac_supply);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline void axp_irq_set(unsigned int irq, bool enable)
|
|
{
|
|
if (enable)
|
|
enable_irq(irq);
|
|
else
|
|
disable_irq(irq);
|
|
}
|
|
|
|
static void axp803_ac_virq_dts_set(struct axp803_ac_power *ac_power, bool enable)
|
|
{
|
|
struct axp_config_info *dts_info = &ac_power->dts_info;
|
|
|
|
if (!dts_info->wakeup_ac_in)
|
|
axp_irq_set(axp803_ac_irq[AXP803_VIRQ_ACIN].irq,
|
|
enable);
|
|
if (!dts_info->wakeup_ac_out)
|
|
axp_irq_set(axp803_ac_irq[AXP803_VIRQ_ACRE].irq,
|
|
enable);
|
|
}
|
|
|
|
static void axp803_ac_power_shutdown(struct platform_device *pdev)
|
|
{
|
|
struct axp803_ac_power *ac_power = platform_get_drvdata(pdev);
|
|
|
|
cancel_delayed_work_sync(&ac_power->ac_supply_mon);
|
|
}
|
|
|
|
static int axp803_ac_power_suspend(struct platform_device *pdev, pm_message_t state)
|
|
{
|
|
struct axp803_ac_power *ac_power = platform_get_drvdata(pdev);
|
|
|
|
cancel_delayed_work_sync(&ac_power->ac_supply_mon);
|
|
axp803_ac_virq_dts_set(ac_power, false);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int axp803_ac_power_resume(struct platform_device *pdev)
|
|
{
|
|
struct axp803_ac_power *ac_power = platform_get_drvdata(pdev);
|
|
|
|
schedule_delayed_work(&ac_power->ac_supply_mon, 0);
|
|
axp803_ac_virq_dts_set(ac_power, true);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id axp803_ac_power_match[] = {
|
|
{
|
|
.compatible = "x-powers,axp803-ac-power-supply",
|
|
.data = (void *)AXP803_ID,
|
|
}, { /* sentinel */ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, axp803_ac_power_match);
|
|
|
|
static struct platform_driver axp803_ac_power_driver = {
|
|
.driver = {
|
|
.name = "axp803-ac-power-supply",
|
|
.of_match_table = axp803_ac_power_match,
|
|
},
|
|
.probe = axp803_ac_power_probe,
|
|
.remove = axp803_ac_power_remove,
|
|
.shutdown = axp803_ac_power_shutdown,
|
|
.suspend = axp803_ac_power_suspend,
|
|
.resume = axp803_ac_power_resume,
|
|
};
|
|
|
|
module_platform_driver(axp803_ac_power_driver);
|
|
|
|
MODULE_AUTHOR("wangxiaoliang <wangxiaoliang@x-powers.com>");
|
|
MODULE_DESCRIPTION("axp803 ac power driver");
|
|
MODULE_LICENSE("GPL");
|