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power: host state notify ec module through gpio

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Change-Id: I6b1401c6959a05fce1d6d7ca7a5fb581782fd30d
Signed-off-by: Shunqing Chen <csq@rock-chips.com>
This commit is contained in:
Shunqing Chen
2016-12-24 16:16:00 +08:00
committed by Huang, Tao
parent 9c88c3dac1
commit c76f182c49
1 changed files with 56 additions and 7 deletions
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drivers/power/ec_battery.c
+56 -7
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@@ -15,6 +15,7 @@
*
*/
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/power_supply.h>
@@ -52,6 +53,7 @@ struct ec_battery {
bool is_battery_low;
bool is_battery_in;
bool is_ac_in;
struct gpio_desc *ec_notify_io;
};
enum bat_mode {
@@ -132,6 +134,7 @@ static int ec_get_battery_info(struct ec_battery *bat)
u16 voltage2;
u16 full_charge_capacity_1;
u16 design_capacity;
u16 cur;
int ret;
int soc;
@@ -139,7 +142,13 @@ static int ec_get_battery_info(struct ec_battery *bat)
EC_GET_PARAMETER_NUM);
if ((EC_GET_PARAMETER_NUM - 1) == buf[0]) {
bat->status = buf[2] << 8 | buf[1];
bat->current_now = buf[4] << 8 | buf[3];
cur = (buf[4] << 8 | buf[3]);
bat->current_now = cur;
if (buf[4] & 0x80) {
bat->current_now = (~cur) & 0xffff;
bat->current_now = -(bat->current_now);
}
bat->rem_capacity = buf[6] << 8 | buf[5];
bat->voltage_now = buf[8] << 8 | buf[7];
bat->full_charge_capacity = buf[10] << 8 | buf[9];
@@ -158,10 +167,12 @@ static int ec_get_battery_info(struct ec_battery *bat)
ret = ec_i2c_read(bat, EC_GET_BATTERY_OTHER_COMMOND, buf,
EC_GET_BATTERYINFO_NUM);
full_charge_capacity_1 = buf[2] << 8 | buf[1];
voltage2 = buf[4] << 8 | buf[3]; /* the same to uppo */
design_capacity = buf[6] << 8 | buf[5]; /* the same to uppo */
bat->design_capacity = design_capacity;
if ((EC_GET_BATTERYINFO_NUM - 1) == buf[0]) {
full_charge_capacity_1 = buf[2] << 8 | buf[1];
voltage2 = buf[4] << 8 | buf[3]; /* the same to uppo */
design_capacity = buf[6] << 8 | buf[5]; /* the same to uppo */
bat->design_capacity = design_capacity;
}
ec_dump_info(bat);
@@ -224,6 +235,12 @@ static int ec_bat_parse_dt(struct ec_battery *bat)
else
bat->monitor_sec = out_value * TIMER_MS_COUNTS;
bat->ec_notify_io =
devm_gpiod_get_optional(bat->dev, "ec-notify",
GPIOD_IN);
if (!IS_ERR_OR_NULL(bat->ec_notify_io))
gpiod_direction_output(bat->ec_notify_io, 0);
return 0;
}
#else
@@ -383,6 +400,37 @@ static int ec_charger_probe(struct i2c_client *client,
return ret;
}
#ifdef CONFIG_PM_SLEEP
static int ec_bat_pm_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct ec_battery *ec_bat = i2c_get_clientdata(client);
cancel_delayed_work_sync(&ec_bat->bat_delay_work);
if (!IS_ERR_OR_NULL(ec_bat->ec_notify_io))
gpiod_direction_output(ec_bat->ec_notify_io, 1);
return 0;
}
static int ec_bat_pm_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct ec_battery *ec_bat = i2c_get_clientdata(client);
if (!IS_ERR_OR_NULL(ec_bat->ec_notify_io))
gpiod_direction_output(ec_bat->ec_notify_io, 0);
queue_delayed_work(ec_bat->bat_monitor_wq, &ec_bat->bat_delay_work,
msecs_to_jiffies(TIMER_MS_COUNTS * 1));
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(ec_bat_pm_ops, ec_bat_pm_suspend, ec_bat_pm_resume);
static const struct i2c_device_id ec_battery_i2c_ids[] = {
{ "ec_battery" },
{ },
@@ -403,8 +451,9 @@ static const struct of_device_id ec_of_match[] = {
static struct i2c_driver ec_i2c_driver = {
.driver = {
.name = "ec_battery",
.of_match_table = ec_of_match,
.name = "ec_battery",
.pm = &ec_bat_pm_ops,
.of_match_table = ec_of_match,
},
.id_table = ec_battery_i2c_ids,
.probe = ec_charger_probe,