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rtc: isl1208: Add "evdet" interrupt source for isl1219 

Add support for "evdet" named interrupt source.

The check if i2c client irq matches evdet irq is needed
for the case that there is only one interrupt named "evdet".
In this case i2c client code handles this like an unnamed
interrupt souce and assigns the value.

Signed-off-by: Denis Osterland <Denis.Osterland@diehl.com>
Reviewed-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
hifive-unleashed-5.1
Denis Osterland 2018-07-24 11:31:21 +00:00 committed by Alexandre Belloni
parent dd35bdb076
commit 9ece7cd833
1 changed files with 30 additions and 16 deletions
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46
drivers/rtc/rtc-isl1208.c
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@ -15,6 +15,7 @@
#include <linux/bcd.h>
#include <linux/rtc.h>
#include "rtc-core.h"
#include <linux/of_irq.h>
/* Register map */
/* rtc section */
@ -725,11 +726,30 @@ static const struct attribute_group isl1219_rtc_sysfs_files = {
.attrs = isl1219_rtc_attrs,
};
static int isl1208_setup_irq(struct i2c_client *client, int irq)
{
int rc = devm_request_threaded_irq(&client->dev, irq, NULL,
isl1208_rtc_interrupt,
IRQF_SHARED | IRQF_ONESHOT,
isl1208_driver.driver.name,
client);
if (!rc) {
device_init_wakeup(&client->dev, 1);
enable_irq_wake(irq);
} else {
dev_err(&client->dev,
"Unable to request irq %d, no alarm support\n",
irq);
}
return rc;
}
static int
isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
int rc = 0;
struct rtc_device *rtc;
int evdet_irq = -1;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
return -ENODEV;
@ -766,28 +786,22 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
rc = rtc_add_group(rtc, &isl1219_rtc_sysfs_files);
if (rc)
return rc;
evdet_irq = of_irq_get_byname(client->dev.of_node, "evdet");
}
rc = sysfs_create_group(&client->dev.kobj, &isl1208_rtc_sysfs_files);
if (rc)
return rc;
if (client->irq > 0) {
rc = devm_request_threaded_irq(&client->dev, client->irq, NULL,
isl1208_rtc_interrupt,
IRQF_SHARED | IRQF_ONESHOT,
isl1208_driver.driver.name,
client);
if (!rc) {
device_init_wakeup(&client->dev, 1);
enable_irq_wake(client->irq);
} else {
dev_err(&client->dev,
"Unable to request irq %d, no alarm support\n",
client->irq);
client->irq = 0;
}
}
if (client->irq > 0)
rc = isl1208_setup_irq(client, client->irq);
if (rc)
return rc;
if (evdet_irq > 0 && evdet_irq != client->irq)
rc = isl1208_setup_irq(client, evdet_irq);
if (rc)
return rc;
return rtc_register_device(rtc);
}