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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2022-11-25 17:05:15 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2022-11-25 17:05:15 +0800 |
| commit | 719c547c6551d48ceb71c1a7ab6ffb96d218551f (patch) | |
| tree | bb84d3810f08f5475a9761645501ca80e2d76fc7 | |
| parent | 8e96729fc26c8967db45a3fb7a60387619f77a22 (diff) | |
| parent | 662233731d66cf41e7494e532e702849c8ce18f3 (diff) | |
Merge branch 'i2c/client_device_id_helper-immutable' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Merge i2c tree to pick up i2c_client_get_device_id helper.
| -rw-r--r-- | drivers/i2c/i2c-core-base.c | 14 | ||||
| -rw-r--r-- | include/linux/i2c.h | 1 |
2 files changed, 15 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! diff --git a/include/linux/i2c.h b/include/linux/i2c.h index f7c49bbdb8a1..d84e0e99f084 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -189,6 +189,7 @@ s32 i2c_smbus_read_i2c_block_data_or_emulated(const struct i2c_client *client, u8 *values); int i2c_get_device_id(const struct i2c_client *client, struct i2c_device_identity *id); +const struct i2c_device_id *i2c_client_get_device_id(const struct i2c_client *client); #endif /* I2C */ /** |