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authorBiju Das <biju.das.jz@bp.renesas.com>2023-06-07 19:57:38 +0300
committerWolfram Sang <wsa@kernel.org>2023-06-09 18:30:47 +0300
commit564d73c4d9201526bd976b9379d2aaf1a7133e84 (patch)
tree13dd5b78191f18f1848b952b8c59823be7be3ecf /drivers/i2c
parentedaac7d9fff62718d0edaa7ae99fd0be36450f32 (diff)
downloadlinux-564d73c4d9201526bd976b9379d2aaf1a7133e84.tar.xz
i2c: Add i2c_get_match_data()
Add i2c_get_match_data() to get match data for I2C, ACPI and DT-based matching, so that we can optimize the driver code. Suggested-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> [wsa: simplified var initialization] Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/i2c-core-base.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index ae3af738b03f..60746652fd52 100644
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -114,6 +114,25 @@ const struct i2c_device_id *i2c_match_id(const struct i2c_device_id *id,
}
EXPORT_SYMBOL_GPL(i2c_match_id);
+const void *i2c_get_match_data(const struct i2c_client *client)
+{
+ struct i2c_driver *driver = to_i2c_driver(client->dev.driver);
+ const struct i2c_device_id *match;
+ const void *data;
+
+ data = device_get_match_data(&client->dev);
+ if (!data) {
+ match = i2c_match_id(driver->id_table, client);
+ if (!match)
+ return NULL;
+
+ data = (const void *)match->driver_data;
+ }
+
+ return data;
+}
+EXPORT_SYMBOL(i2c_get_match_data);
+
static int i2c_device_match(struct device *dev, struct device_driver *drv)
{
struct i2c_client *client = i2c_verify_client(dev);