power_supply: bq25700: support charge-dect interrupt wakeup system

Change-Id: I3e826021e21caecd052f6001e3bbf73ae2732acd
Signed-off-by: Shengfei xu <xsf@rock-chips.com>

diff --git a/drivers/power/bq25700_charger.c b/drivers/power/bq25700_charger.c
index 13201768bd48564407eda8698fcb338ef9216347..fca588c6c7b036161e3b0f4546581350d69bcfa3 100644 (file)
--- a/drivers/power/bq25700_charger.c
+++ b/drivers/power/bq25700_charger.c
@@ -18,6 +18,7 @@
 #include <linux/power/bq25700-charge.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/mfd/core.h>
 #include <linux/module.h>
 #include <linux/regmap.h>
@@ -30,6 +31,7 @@
 #include <linux/power_supply.h>
 #include <linux/gpio.h>
 #include <linux/of_gpio.h>
+#include <linux/rk_keys.h>
 
 static int dbg_enable;
 module_param_named(dbg_level, dbg_enable, int, 0644);
@@ -1023,18 +1025,18 @@ static int bq25700_power_supply_init(struct bq25700_device *charger)
 static irqreturn_t bq25700_irq_handler_thread(int irq, void *private)
 {
        struct bq25700_device *charger = private;
-       int ret;
-       struct bq25700_state state;
-
-       ret = bq25700_get_chip_state(charger, &state);
-       if (ret < 0)
-               goto handled;
+       int irq_flag;
 
-       charger->state = state;
-
-       power_supply_changed(charger->supply_charger);
+       if (bq25700_field_read(charger, AC_STAT)) {
+               irq_flag = IRQF_TRIGGER_LOW;
+       } else {
+               irq_flag = IRQF_TRIGGER_HIGH;
+               bq25700_field_write(charger, INPUT_CURRENT,
+                                   charger->init_data.input_current_sdp);
+       }
+       irq_set_irq_type(irq, irq_flag | IRQF_ONESHOT);
+       rk_send_wakeup_key();
 
-handled:
        return IRQ_HANDLED;
 }
 
@@ -1637,6 +1639,7 @@ static int bq25700_probe(struct i2c_client *client,
        struct bq25700_device *charger;
        int ret = 0;
        u32 i = 0;
+       int irq_flag;
 
        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA))
                return -EIO;
@@ -1703,12 +1706,21 @@ static int bq25700_probe(struct i2c_client *client,
                dev_err(dev, "No irq resource found.\n");
                return client->irq;
        }
+
+       if (bq25700_field_read(charger, AC_STAT))
+               irq_flag = IRQF_TRIGGER_LOW;
+       else
+               irq_flag = IRQF_TRIGGER_HIGH;
+
+       device_init_wakeup(dev, 1);
+
        ret = devm_request_threaded_irq(dev, client->irq, NULL,
                                        bq25700_irq_handler_thread,
-                                       IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+                                       irq_flag | IRQF_ONESHOT,
                                        "bq25700_irq", charger);
        if (ret)
                goto irq_fail;
+       enable_irq_wake(client->irq);
 
        bq25700_power_supply_init(charger);
        bq25700_charger = charger;