diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2013-05-20 20:34:14 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2013-05-20 22:08:18 +0200 |
| commit | 5b79ceee575e5b51bda945fb37aff667470ce106 (patch) | |
| tree | 5cdd3d51432e9e256bec843731ea8d6684b00582 /drivers/i2c | |
| parent | 5cee215f3eabdef1648773e34eed2f2d1c8f5088 (diff) | |
| download | barebox-5b79ceee575e5b51bda945fb37aff667470ce106.tar.gz barebox-5b79ceee575e5b51bda945fb37aff667470ce106.tar.xz | |
i2c: Add support for dynamic i2c bus numbers
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, 11 insertions, 2 deletions
diff --git a/drivers/i2c/i2c.c b/drivers/i2c/i2c.c index 53a11fe44f..ddf00826b4 100644 --- a/drivers/i2c/i2c.c +++ b/drivers/i2c/i2c.c @@ -384,8 +384,17 @@ int i2c_add_numbered_adapter(struct i2c_adapter *adapter) { int ret; - if (i2c_get_adapter(adapter->nr)) - return -EBUSY; + if (adapter->nr < 0) { + int nr; + + for (nr = 0;; nr++) + if (!i2c_get_adapter(nr)) + break; + adapter->nr = nr; + } else { + if (i2c_get_adapter(adapter->nr)) + return -EBUSY; + } adapter->dev.id = adapter->nr; strcpy(adapter->dev.name, "i2c"); |