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| author | Andrey Smirnov <andrew.smirnov@gmail.com> | 2020-03-31 11:47:04 -0700 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2020-04-01 07:45:47 +0200 |
| commit | 1437676f8cdf8fafd3269e364fc06f996acc0aad (patch) | |
| tree | 3d73a45bd69614806c195f03606cbf7138add92b /drivers/i2c | |
| parent | 1a414ba273f9d8825957ce7b55b135c3b8e2b67a (diff) | |
| download | barebox-1437676f8cdf8fafd3269e364fc06f996acc0aad.tar.gz barebox-1437676f8cdf8fafd3269e364fc06f996acc0aad.tar.xz | |
i2c: Port of_find_i2c_device_by_node() from Linux
Port of_find_i2c_device_by_node() from Linux in order to allow looking
i2c_client up by corresponding DT node. Useful for interacting with
identical raw/driverless I2C devices that are not found on the same
bus between board variants.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/i2c.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/i2c/i2c.c b/drivers/i2c/i2c.c index 9df5ee70c7..2fed624d69 100644 --- a/drivers/i2c/i2c.c +++ b/drivers/i2c/i2c.c @@ -556,6 +556,19 @@ struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node) return NULL; } +struct i2c_client *of_find_i2c_device_by_node(struct device_node *node) +{ + struct device_d *dev = of_find_device_by_node(node); + + if (!dev) + return NULL; + + if (dev->bus != &i2c_bus) + return NULL; + + return to_i2c_client(dev); +} + /** * i2c_parse_fw_timings - get I2C related timing parameters from firmware * @dev: The device to scan for I2C timing properties |