Re: [RFC/RFT PATCH] hwmon: (lm75) Hide register size differences in regmap access functions

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On Tue, Dec 17, 2024 at 02:52:10PM -0800, Guenter Roeck wrote:
> Hide register size differences in regmap access functions to simplify
> runtime code and to simplify adding support for I3C devices. Also
> use regmap API functions for bit operations where possible.
> 
> Cc: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> This should help with adding I3C support.
> Module tested only.

Does that mean 'build tested as a module only'?

With the following small patch on top, it works \o/ I suggest that I
will include your patch in my series for adding I3C support. I have a
few patches on top already. I think this makes dependency handling a bit
easier?


diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index f2550f623bee..1ef47ba6b458 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -653,6 +653,7 @@ static int lm75_probe(struct i2c_client *client)
 	if (!data)
 		return -ENOMEM;
 
+	/* Set this early. Our custom regmap callbacks need it */
 	dev_set_drvdata(dev, data);
 
 	data->client = client;
@@ -662,7 +663,7 @@ static int lm75_probe(struct i2c_client *client)
 	if (IS_ERR(data->vs))
 		return PTR_ERR(data->vs);
 
-	data->regmap = devm_regmap_init_i2c(client, &lm75_regmap_config);
+	data->regmap = devm_regmap_init(&client->dev, NULL, data, &lm75_regmap_config);
 	if (IS_ERR(data->regmap))
 		return PTR_ERR(data->regmap);


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