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rtc: isl1208: set ev-evienb bit from device tree 

Add support to disable event in pull-up.

Signed-off-by: Denis Osterland <Denis.Osterland@diehl.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Denis Osterland 2018-07-24 11:31:21 +00:00 committed by Alexandre Belloni
parent 9ece7cd833
commit cfa30622c8
1 changed files with 18 additions and 3 deletions
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21
drivers/rtc/rtc-isl1208.c
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@ -44,6 +44,7 @@
#define ISL1208_REG_INT_IM (1<<7) /* interrupt/alarm mode */
#define ISL1219_REG_EV 0x09
#define ISL1219_REG_EV_EVEN (1<<4) /* event detection enable */
#define ISL1219_REG_EV_EVIENB (1<<7) /* event in pull-up disable */
#define ISL1208_REG_ATR 0x0a
#define ISL1208_REG_DTR 0x0b
@ -777,8 +778,22 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
"please set clock.\n");
if (id->driver_data == TYPE_ISL1219) {
rc = i2c_smbus_write_byte_data(client, ISL1219_REG_EV,
ISL1219_REG_EV_EVEN);
struct device_node *np = client->dev.of_node;
u32 evienb;
rc = i2c_smbus_read_byte_data(client, ISL1219_REG_EV);
if (rc < 0) {
dev_err(&client->dev, "failed to read EV reg\n");
return rc;
}
rc |= ISL1219_REG_EV_EVEN;
if (!of_property_read_u32(np, "isil,ev-evienb", &evienb)) {
if (evienb)
rc |= ISL1219_REG_EV_EVIENB;
else
rc &= ~ISL1219_REG_EV_EVIENB;
}
rc = i2c_smbus_write_byte_data(client, ISL1219_REG_EV, rc);
if (rc < 0) {
dev_err(&client->dev, "could not enable tamper detection\n");
return rc;
@ -786,7 +801,7 @@ 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");
evdet_irq = of_irq_get_byname(np, "evdet");
}
rc = sysfs_create_group(&client->dev.kobj, &isl1208_rtc_sysfs_files);