summaryrefslogtreecommitdiffstats
path: root/drivers/i2c/i2c-core-smbus.c
diff options
context:
space:
mode:
authorPhil Reid <preid@electromag.com.au>2017-08-24 17:31:03 +0800
committerWolfram Sang <wsa@the-dreams.de>2017-10-28 23:42:47 +0200
commit69d17246ab255dda8e71c8d65396b4aa6121b7ad (patch)
tree9ed40351baed0773b7152f1b69996a454ef3b7c3 /drivers/i2c/i2c-core-smbus.c
parent3c0a60bee1d157d4ed9ae6a9727d508158d002c7 (diff)
downloadlinux-69d17246ab255dda8e71c8d65396b4aa6121b7ad.tar.bz2
i2c: i2c-smbus: add of_i2c_setup_smbus_alert
This commit adds of_i2c_setup_smbus_alert which allows the smbalert driver to be attached to an i2c adapter via the device tree. Signed-off-by: Phil Reid <preid@electromag.com.au> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/i2c-core-smbus.c')
-rw-r--r--drivers/i2c/i2c-core-smbus.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-core-smbus.c b/drivers/i2c/i2c-core-smbus.c
index 7f3ec02f085a..4bb9927afd01 100644
--- a/drivers/i2c/i2c-core-smbus.c
+++ b/drivers/i2c/i2c-core-smbus.c
@@ -625,3 +625,25 @@ struct i2c_client *i2c_setup_smbus_alert(struct i2c_adapter *adapter,
return i2c_new_device(adapter, &ara_board_info);
}
EXPORT_SYMBOL_GPL(i2c_setup_smbus_alert);
+
+#if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_OF)
+int of_i2c_setup_smbus_alert(struct i2c_adapter *adapter)
+{
+ struct i2c_client *client;
+ int irq;
+
+ irq = of_property_match_string(adapter->dev.of_node, "interrupt-names",
+ "smbus_alert");
+ if (irq == -EINVAL || irq == -ENODATA)
+ return 0;
+ else if (irq < 0)
+ return irq;
+
+ client = i2c_setup_smbus_alert(adapter, NULL);
+ if (!client)
+ return -ENODEV;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(of_i2c_setup_smbus_alert);
+#endif