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>

diff --git a/Documentation/hwmon/lm75 b/Documentation/hwmon/lm75
index 67691a0aa41db82387369957de586bd4a6a2c6df..ac95edfcd907ccddcf2f7be7cf34944b0895ea94 100644 (file)
--- a/Documentation/hwmon/lm75
+++ b/Documentation/hwmon/lm75
@@ -42,8 +42,8 @@ Supported chips:
     Addresses scanned: none
     Datasheet: Publicly available at the ST website
                http://www.st.com/internet/analog/product/121769.jsp
-  * Texas Instruments TMP100, TMP101, TMP105, TMP112, TMP75, TMP175, TMP275
-    Prefixes: 'tmp100', 'tmp101', 'tmp105', 'tmp112', 'tmp175', 'tmp75', 'tmp275'
+  * Texas Instruments TMP100, TMP101, TMP105, TMP112, TMP75, TMP75C, TMP175, TMP275
+    Prefixes: 'tmp100', 'tmp101', 'tmp105', 'tmp112', 'tmp175', 'tmp75', 'tmp75c', 'tmp275'
     Addresses scanned: none
     Datasheet: Publicly available at the Texas Instruments website
                http://www.ti.com/product/tmp100
@@ -51,6 +51,7 @@ Supported chips:
                http://www.ti.com/product/tmp105
                http://www.ti.com/product/tmp112
                http://www.ti.com/product/tmp75
+               http://www.ti.com/product/tmp75c
                http://www.ti.com/product/tmp175
                http://www.ti.com/product/tmp275
   * NXP LM75B

diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index e4e57bbafb10eeb621ad03ff03e8985030c43e4a..0addc84ba948a09e6b740db56593fbd124b8c8d5 100644 (file)
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -57,6 +57,7 @@ enum lm75_type {              /* keep sorted in alphabetical order */
        tmp175,
        tmp275,
        tmp75,
+       tmp75c,
 };
 
 /* Addresses scanned */
@@ -280,6 +281,11 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
                data->resolution = 12;
                data->sample_time = HZ / 2;
                break;
+       case tmp75c:
+               clr_mask |= 1 << 5;             /* not one-shot mode */
+               data->resolution = 12;
+               data->sample_time = HZ / 4;
+               break;
        }
 
        /* configure as specified */
@@ -343,6 +349,7 @@ static const struct i2c_device_id lm75_ids[] = {
        { "tmp175", tmp175, },
        { "tmp275", tmp275, },
        { "tmp75", tmp75, },
+       { "tmp75c", tmp75c, },
        { /* LIST END */ }
 };
 MODULE_DEVICE_TABLE(i2c, lm75_ids);