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SubjectFwd: [PATCH 1/2] hwmon: (lm75) Add support for TMP75B
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Date
The TMP75B has a different control register, supports 12-bit
resolution and the default conversion rate is 37 Hz.

Signed-off-by: Iker Perez del Palomar Sustatxa <iker.perez@codethink.co.uk>
---
 Documentation/hwmon/lm75 |  5 +++--
 drivers/hwmon/lm75.c     | 13 +++++++++++++
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/Documentation/hwmon/lm75 b/Documentation/hwmon/lm75
index 010583608f12..baf052935761 100644
--- a/Documentation/hwmon/lm75
+++ b/Documentation/hwmon/lm75
@@ -47,8 +47,8 @@ Supported chips:
     Addresses scanned: none
     Datasheet: Publicly available at the ST website
            https://www.st.com/resource/en/datasheet/stlm75.pdf
-  * Texas Instruments TMP100, TMP101, TMP105, TMP112, TMP75, TMP75C,
TMP175, TMP275
-    Prefixes: 'tmp100', 'tmp101', 'tmp105', 'tmp112', 'tmp175',
'tmp75', 'tmp75c', 'tmp275'
+  * Texas Instruments TMP100, TMP101, TMP105, TMP112, TMP75, TMP75B,
TMP75C, TMP175, TMP275
+    Prefixes: 'tmp100', 'tmp101', 'tmp105', 'tmp112', 'tmp175',
'tmp75', 'tmp75b', 'tmp75c', 'tmp275'
     Addresses scanned: none
     Datasheet: Publicly available at the Texas Instruments website
                http://www.ti.com/product/tmp100
@@ -56,6 +56,7 @@ 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/tmp75b
                http://www.ti.com/product/tmp75c
                http://www.ti.com/product/tmp175
                http://www.ti.com/product/tmp275
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index 62acb9f16ec5..1b5c32cbdc62 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -32,6 +32,7 @@
 #include "lm75.h"


+
 /*
  * This driver handles the LM75 and compatible digital temperature
sensors.
  */
@@ -59,6 +60,7 @@ enum lm75_type {        /* keep sorted in alphabetical
order */
     tmp175,
     tmp275,
     tmp75,
+    tmp75b,
     tmp75c,
 };

@@ -378,6 +380,12 @@ lm75_probe(struct i2c_client *client, const struct
i2c_device_id *id)
         data->resolution = 12;
         data->sample_time = MSEC_PER_SEC / 2;
         break;
+    case tmp75b:
+        clr_mask |= 1 << 15;        /* not one-shot mode */
+        data->resolution = 12;
+        data->sample_time = MSEC_PER_SEC / 32;
+        break;
+
     case tmp75c:
         clr_mask |= 1 << 5;        /* not one-shot mode */
         data->resolution = 12;
@@ -438,6 +446,7 @@ static const struct i2c_device_id lm75_ids[] = {
     { "tmp175", tmp175, },
     { "tmp275", tmp275, },
     { "tmp75", tmp75, },
+    { "tmp75b", tmp75b,},
     { "tmp75c", tmp75c, },
     { /* LIST END */ }
 };
@@ -537,6 +546,10 @@ static const struct of_device_id lm75_of_match[] = {
         .data = (void *)tmp75
     },
     {
+        .compatible = "ti,tmp75b",
+        .data = (void *)tmp75b
+    },
+    {
         .compatible = "ti,tmp75c",
         .data = (void *)tmp75c
     },
--
2.11.0

--
Iker Perez del Palomar, Software Engineer
Codethink Ltd 35 Dale St, Manchester M1 2HF
http://www.codethink.co.uk/ Manchester, M1 2JW, United Kingdom
We respect your privacy. See https://www.codethink.co.uk/privacy.html

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