[PATCH v4 20/20] include/linux/i2c.h: remove I2C_CLASS_DDC support

From: Heiner Kallweit
Date: Mon Nov 20 2023 - 16:47:50 EST


After removal of the legacy EEPROM driver and I2C_CLASS_DDC support in
olpc_dcon there's no i2c client driver left supporting I2C_CLASS_DDC.
Class-based device auto-detection is a legacy mechanism and shouldn't
be used in new code. So we can remove this class completely now.

Preferably this series should be applied via the i2c tree.

Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>

---
include/linux/i2c.h | 1 -
1 file changed, 1 deletion(-)

diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 0dae9db27..d029aade3 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -850,7 +850,6 @@ static inline void i2c_mark_adapter_resumed(struct i2c_adapter *adap)

/* i2c adapter classes (bitmask) */
#define I2C_CLASS_HWMON (1<<0) /* lm_sensors, ... */
-#define I2C_CLASS_DDC (1<<3) /* DDC bus on graphics adapters */
#define I2C_CLASS_SPD (1<<7) /* Memory modules */
/* Warn users that the adapter doesn't support classes anymore */
#define I2C_CLASS_DEPRECATED (1<<8)