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| author | Wolfram Sang <wsa@kernel.org> | 2022-11-14 20:51:06 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2022-11-14 20:51:06 +0100 |
| commit | e0c7800a5530a598778f5b8c9fca570949817a9f (patch) | |
| tree | 0a729213a5b9de089e73d4f3312910beb296cd80 /drivers/i2c | |
| parent | i2c: /pasemi: PASemi I2C controller IRQ enablement (diff) | |
| parent | i2c: core: Introduce i2c_client_get_device_id helper function (diff) | |
| download | linux-e0c7800a5530a598778f5b8c9fca570949817a9f.tar.xz linux-e0c7800a5530a598778f5b8c9fca570949817a9f.zip | |
Merge branch 'i2c/client_device_id_helper-immutable' into i2c/for-mergewindow
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/i2c-core-base.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index b4edf10e8fd0..9aa7b9d9a485 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -2236,6 +2236,20 @@ int i2c_get_device_id(const struct i2c_client *client, } EXPORT_SYMBOL_GPL(i2c_get_device_id); +/** + * i2c_client_get_device_id - get the driver match table entry of a device + * @client: the device to query. The device must be bound to a driver + * + * Returns a pointer to the matching entry if found, NULL otherwise. + */ +const struct i2c_device_id *i2c_client_get_device_id(const struct i2c_client *client) +{ + const struct i2c_driver *drv = to_i2c_driver(client->dev.driver); + + return i2c_match_id(drv->id_table, client); +} +EXPORT_SYMBOL_GPL(i2c_client_get_device_id); + /* ---------------------------------------------------- * the i2c address scanning function * Will not work for 10-bit addresses! |