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i2c: Match using traditional OF methods, then by vendor-less compatible strings

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This function provides a single call for all I2C devices which need to
match firstly using traditional OF means i.e by of_node, then if that
fails we attempt to match using the supplied I2C client name with a
list of supplied compatible strings with the '<vendor>,' string
removed.  The latter is required due to the unruly naming conventions
used currently by I2C devices.

Acked-by: Grant Likely <[email protected]>
Signed-off-by: Lee Jones <[email protected]>
[Kieran: Fix static inline usage on !CONFIG_OF]
Tested-by: Kieran Bingham <[email protected]>
Reviewed-by: Javier Martinez Canillas <[email protected]>
Tested-by: Javier Martinez Canillas <[email protected]>
Signed-off-by: Kieran Bingham <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
This commit is contained in:
Lee Jones 2016-11-07 12:47:38 +00:00 • committed by Wolfram Sang
commit 298d4de1ed
2 changed files with 28 additions and 0 deletions
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16
drivers/i2c/i2c-core.c
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@ -1799,6 +1799,22 @@ i2c_of_match_device_sysfs(const struct of_device_id *matches,
return NULL;
}
const struct of_device_id
*i2c_of_match_device(const struct of_device_id *matches,
struct i2c_client *client)
{
const struct of_device_id *match;
if (!(client && matches))
return NULL;
match = of_match_device(matches, &client->dev);
if (match)
return match;
return i2c_of_match_device_sysfs(matches, client);
}
EXPORT_SYMBOL_GPL(i2c_of_match_device);
#else
static void of_i2c_register_devices(struct i2c_adapter *adap) { }
#endif /* CONFIG_OF */