i2c: mux: reg: Remove class-based device auto-detection support

Legacy class-based device auto-detection shouldn't be used in new code.
Therefore remove support in i2c-mux-reg as long as we don't have a
user of this feature yet.

Link: https://lore.kernel.org/linux-i2c/[email protected]/
Signed-off-by: Heiner Kallweit <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>

Author: hkallweit

drivers/i2c/muxes/i2c-mux-reg.c

@@ -159,7 +159,6 @@ static int i2c_mux_reg_probe(struct platform_device *pdev)
 	struct regmux *mux;
 	struct i2c_adapter *parent;
 	struct resource *res;
-	unsigned int class;
 	int i, ret, nr;
 
 	mux = devm_kzalloc(&pdev->dev, sizeof(*mux), GFP_KERNEL);
@@ -213,9 +212,8 @@ static int i2c_mux_reg_probe(struct platform_device *pdev)
 
 	for (i = 0; i < mux->data.n_values; i++) {
 		nr = mux->data.base_nr ? (mux->data.base_nr + i) : 0;
-		class = mux->data.classes ? mux->data.classes[i] : 0;
 
-		ret = i2c_mux_add_adapter(muxc, nr, mux->data.values[i], class);
+		ret = i2c_mux_add_adapter(muxc, nr, mux->data.values[i], 0);
 		if (ret)
 			goto err_del_mux_adapters;
 	}

include/linux/platform_data/i2c-mux-reg.h

@@ -17,7 +17,6 @@
  * @n_values: Number of multiplexer channels
  * @little_endian: Indicating if the register is in little endian
  * @write_only: Reading the register is not allowed by hardware
- * @classes: Optional I2C auto-detection classes
  * @idle: Value to write to mux when idle
  * @idle_in_use: indicate if idle value is in use
  * @reg: Virtual address of the register to switch channel
@@ -30,7 +29,6 @@ struct i2c_mux_reg_platform_data {
 	int n_values;
 	bool little_endian;
 	bool write_only;
-	const unsigned int *classes;
 	u32 idle;
 	bool idle_in_use;
 	void __iomem *reg;