diff options
| author | Andrew F. Davis <afd@ti.com> | 2015-09-22 14:35:11 -0500 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2015-09-23 17:36:18 +0200 |
| commit | 8807feb91b76dc3267cef58302aaeff3430cb8f2 (patch) | |
| tree | 9e1c74276c3f77501d0fec1f55c84c90e69e2aac /drivers | |
| parent | 74aab849f3423f3f783a8e5e9767572c2b59b353 (diff) | |
| download | linux-8807feb91b76dc3267cef58302aaeff3430cb8f2.tar.bz2 | |
power: bq27xxx_battery: Add interrupt handling support
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>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/power/bq27xxx_battery.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/power/bq27xxx_battery.c b/drivers/power/bq27xxx_battery.c index fe18a2d8ccc2..473aa2f94882 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> @@ -761,6 +762,15 @@ 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 = @@ -1128,6 +1138,19 @@ 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: |