Messages in this thread Patch in this message | | | From | "Andrew F. Davis" <> | Subject | [PATCH v4 7/7] power: bq27xxx_battery: Add interrupt handling support | Date | Mon, 14 Sep 2015 16:26:13 -0500 |
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Some devices have a pin that can generate an interrupt when the battery's status changes. Add an interrupt handler to read the new battery status.
Signed-off-by: Andrew F. Davis <afd@ti.com> --- drivers/power/bq27xxx_battery.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)
diff --git a/drivers/power/bq27xxx_battery.c b/drivers/power/bq27xxx_battery.c index 10be8a6..29fdcd7 100644 --- a/drivers/power/bq27xxx_battery.c +++ b/drivers/power/bq27xxx_battery.c @@ -48,6 +48,7 @@ #include <linux/idr.h> #include <linux/i2c.h> #include <linux/slab.h> +#include <linux/interrupt.h> #include <asm/unaligned.h> #include <linux/power/bq27xxx_battery.h> @@ -732,6 +733,15 @@ static void bq27xxx_battery_update(struct bq27xxx_device_info *di) di->last_update = jiffies; } +static irqreturn_t bq27xxx_battery_irq_handler_thread(int irq, void *data) +{ + struct bq27xxx_device_info *di = data; + + bq27xxx_battery_update(di); + + return IRQ_HANDLED; +} + static void bq27xxx_battery_poll(struct work_struct *work) { struct bq27xxx_device_info *di = @@ -1137,6 +1147,19 @@ static int bq27xxx_battery_i2c_probe(struct i2c_client *client, i2c_set_clientdata(client, di); + if (client->irq) { + retval = devm_request_threaded_irq(&client->dev, client->irq, + NULL, bq27xxx_battery_irq_handler_thread, + IRQF_ONESHOT, + name, di); + if (retval) { + dev_err(&client->dev, + "Unable to register IRQ %d error %d\n", + client->irq, retval); + return retval; + } + } + return 0; batt_failed: -- 1.9.1
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