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hwmon: (lm75) Add support for TMP75C 

The TMP75C has a different control register layout and only supports
12-bit temperature samples (0.0625 deg C).
The continuous sample rate is ~12 Hz.

Signed-off-by: Ben Gardner <gardner.ben@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Ben Gardner 2015-10-07 21:55:20 -05:00 committed by Guenter Roeck
parent 0b056b29f2
commit 9c32e815cf
2 changed files with 10 additions and 2 deletions
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5
Documentation/hwmon/lm75
View File

@ -42,8 +42,8 @@ Supported chips:
Addresses scanned: none Addresses scanned: none
Datasheet: Publicly available at the ST website Datasheet: Publicly available at the ST website
http://www.st.com/internet/analog/product/121769.jsp http://www.st.com/internet/analog/product/121769.jsp
* Texas Instruments TMP100, TMP101, TMP105, TMP112, TMP75, TMP175, TMP275 * Texas Instruments TMP100, TMP101, TMP105, TMP112, TMP75, TMP75C, TMP175, TMP275
Prefixes: 'tmp100', 'tmp101', 'tmp105', 'tmp112', 'tmp175', 'tmp75', 'tmp275' Prefixes: 'tmp100', 'tmp101', 'tmp105', 'tmp112', 'tmp175', 'tmp75', 'tmp75c', 'tmp275'
Addresses scanned: none Addresses scanned: none
Datasheet: Publicly available at the Texas Instruments website Datasheet: Publicly available at the Texas Instruments website
http://www.ti.com/product/tmp100 http://www.ti.com/product/tmp100
@ -51,6 +51,7 @@ Supported chips:
http://www.ti.com/product/tmp105 http://www.ti.com/product/tmp105
http://www.ti.com/product/tmp112 http://www.ti.com/product/tmp112
http://www.ti.com/product/tmp75 http://www.ti.com/product/tmp75
http://www.ti.com/product/tmp75c
http://www.ti.com/product/tmp175 http://www.ti.com/product/tmp175
http://www.ti.com/product/tmp275 http://www.ti.com/product/tmp275
* NXP LM75B * NXP LM75B

7
drivers/hwmon/lm75.c
View File

@ -57,6 +57,7 @@ enum lm75_type { /* keep sorted in alphabetical order */
tmp175, tmp175,
tmp275, tmp275,
tmp75, tmp75,
tmp75c,
}; };
/* Addresses scanned */ /* Addresses scanned */
@ -280,6 +281,11 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
data->resolution = 12; data->resolution = 12;
data->sample_time = HZ / 2; data->sample_time = HZ / 2;
break; break;
case tmp75c:
clr_mask |= 1 << 5; /* not one-shot mode */
data->resolution = 12;
data->sample_time = HZ / 4;
break;
} }
/* configure as specified */ /* configure as specified */
@ -343,6 +349,7 @@ static const struct i2c_device_id lm75_ids[] = {
{ "tmp175", tmp175, }, { "tmp175", tmp175, },
{ "tmp275", tmp275, }, { "tmp275", tmp275, },
{ "tmp75", tmp75, }, { "tmp75", tmp75, },
{ "tmp75c", tmp75c, },
{ /* LIST END */ } { /* LIST END */ }
}; };
MODULE_DEVICE_TABLE(i2c, lm75_ids); MODULE_DEVICE_TABLE(i2c, lm75_ids);