From 7e4c224abfe8e2a00f56a2ef0198e6de3ca1852c Mon Sep 17 00:00:00 2001 From: Jon Hunter Date: Wed, 29 Jun 2016 10:17:53 +0100 Subject: [PATCH] i2c: core: Add support for 'i2c-bus' subnode If the 'i2c-bus' device-tree node is present for an I2C adapter then parse this subnode for I2C slaves. Signed-off-by: Jon Hunter Acked-by: Wolfram Sang Signed-off-by: Thierry Reding --- drivers/i2c/i2c-core.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index af11b658984d..ed7002dd9401 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -1411,7 +1411,7 @@ static struct i2c_client *of_i2c_register_device(struct i2c_adapter *adap, static void of_i2c_register_devices(struct i2c_adapter *adap) { - struct device_node *node; + struct device_node *bus, *node; /* Only register child devices if the adapter has a node pointer set */ if (!adap->dev.of_node) @@ -1419,11 +1419,17 @@ static void of_i2c_register_devices(struct i2c_adapter *adap) dev_dbg(&adap->dev, "of_i2c: walking child nodes\n"); - for_each_available_child_of_node(adap->dev.of_node, node) { + bus = of_get_child_by_name(adap->dev.of_node, "i2c-bus"); + if (!bus) + bus = of_node_get(adap->dev.of_node); + + for_each_available_child_of_node(bus, node) { if (of_node_test_and_set_flag(node, OF_POPULATED)) continue; of_i2c_register_device(adap, node); } + + of_node_put(bus); } static int of_dev_node_match(struct device *dev, void *data) -- GitLab