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Commit 8a5c5cc6 authored by Jean Delvare's avatar Jean Delvare Committed by Jean Delvare
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hwmon: (lm75) Per-chip configuration register initialization 



There is no standard for the configuration register bits of LM75-like
chips. We shouldn't blindly clear bits setting the resolution as they
are either unused or used for something else on some of the supported
chips.

So, switch to per-chip configuration initialization. This will allow
for better tuning later, for example using more resolution bits when
available.

Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
Acked-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 1db77221

drivers/hwmon/lm75.c

+22 −2
Original line number Diff line number Diff line
@@ -167,8 +167,28 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id) 
	 * Then tweak to be more precise when appropriate.

	 */

	set_mask = 0;

	clr_mask = (1 << 0)			/* continuous conversions */

		| (1 << 6) | (1 << 5);		/* 9-bit mode */

	clr_mask = LM75_SHUTDOWN;		/* continuous conversions */



	switch (id->driver_data) {

	case adt75:

		clr_mask |= 1 << 5;		/* not one-shot mode */

		break;

	case ds1775:

	case ds75:

	case stds75:

		clr_mask |= 3 << 5;		/* 9-bit mode */

		break;

	case mcp980x:

	case tmp100:

	case tmp101:

	case tmp105:

	case tmp175:

	case tmp275:

	case tmp75:

		clr_mask |= 3 << 5;		/* 9-bit mode */

		clr_mask |= 1 << 7;		/* not one-shot mode */

		break;

	}



	/* configure as specified */

	status = lm75_read_value(client, LM75_REG_CONF);