linux-kernel - [PATCH] hwmon: (lm75) Add support for the NXP LM75B

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Message-Id: <1415282376-3055-1-git-send-email-michael.thalmeier@hale.at>
Date:	Thu,  6 Nov 2014 14:59:36 +0100
From:	Michael Thalmeier <michael.thalmeier@...e.at>
To:	linux@...ck-us.net, jdelvare@...e.de
Cc:	lm-sensors@...sensors.org, linux-kernel@...r.kernel.org
Subject: [PATCH] hwmon: (lm75) Add support for the NXP LM75B

It is basically a faster lm75 with improved (11 bit) resolution.

Signed-off-by: Michael Thalmeier <michael.thalmeier@...e.at>
---
 Documentation/hwmon/lm75 | 6 ++++++
 drivers/hwmon/lm75.c     | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/Documentation/hwmon/lm75 b/Documentation/hwmon/lm75
index c6a5ff1..62e216a 100644
--- a/Documentation/hwmon/lm75
+++ b/Documentation/hwmon/lm75
@@ -53,6 +53,12 @@ Supported chips:
                http://www.ti.com/product/tmp75
                http://www.ti.com/product/tmp175
                http://www.ti.com/product/tmp275
+  * NXP LM75B
+    Prefix: 'lm75b'
+    Addresses scanned: none
+    Datasheet: Publicly available at the NXP website
+               http://www.nxp.com/documents/data_sheet/LM75B.pdf
+
 
 Author: Frodo Looijaard <frodol@....nl>
 
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index d16dbb33a..7ec5ccd 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -44,6 +44,7 @@ enum lm75_type {		/* keep sorted in alphabetical order */
 	g751,
 	lm75,
 	lm75a,
+	lm75b,
 	max6625,
 	max6626,
 	mcp980x,
@@ -271,6 +272,10 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
 		data->resolution = 12;
 		data->sample_time = HZ / 2;
 		break;
+	case lm75b:
+		data->resolution = 11;
+		data->sample_time = HZ / 4;
+		break;
 	}
 
 	/* configure as specified */
@@ -334,6 +339,7 @@ static const struct i2c_device_id lm75_ids[] = {
 	{ "tmp175", tmp175, },
 	{ "tmp275", tmp275, },
 	{ "tmp75", tmp75, },
+	{ "lm75b", lm75b, },
 	{ /* LIST END */ }
 };
 MODULE_DEVICE_TABLE(i2c, lm75_ids);
-- 
1.9.3

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