* [PATCH v4 0/2] Support for TMP75B temperature sensor
@ 2019-05-03 16:14 Iker Perez
2019-05-03 16:15 ` [PATCH v4 1/2] hwmon: (lm75) Add support for TMP75B Iker Perez
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Iker Perez @ 2019-05-03 16:14 UTC (permalink / raw)
To: linux-hwmon; +Cc: linux, devicetree, Iker Perez del Palomar Sustatxa
From: Iker Perez del Palomar Sustatxa <iker.perez@codethink.co.uk>
This patch series adds support for the TMP75 temperature sensor to the
lm75.c driver. Although the TMP75B has a configurable conversion rate,
this series just sets it to the default rate of 37Hz. Sample rate is set
close to this.
In the future, I want to develop a function that allows the user choose
the preferred conversion rate from user-land.
Iker Perez del Palomar Sustatxa (2):
hwmon: (lm75) Add support for TMP75B
dt-bindings: hwmon: Add tmp75b to lm75.txt
Documentation/devicetree/bindings/hwmon/lm75.txt | 1 +
Documentation/hwmon/lm75 | 7 +++++--
drivers/hwmon/lm75.c | 11 +++++++++++
3 files changed, 17 insertions(+), 2 deletions(-)
--
2.11.0
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH v4 1/2] hwmon: (lm75) Add support for TMP75B
2019-05-03 16:14 [PATCH v4 0/2] Support for TMP75B temperature sensor Iker Perez
@ 2019-05-03 16:15 ` Iker Perez
2019-05-03 16:15 ` [PATCH v4 2/2] dt-bindings: hwmon: Add tmp75b to lm75.txt Iker Perez
2019-05-03 20:16 ` [PATCH v4 0/2] Support for TMP75B temperature sensor Guenter Roeck
2 siblings, 0 replies; 4+ messages in thread
From: Iker Perez @ 2019-05-03 16:15 UTC (permalink / raw)
To: linux-hwmon; +Cc: linux, devicetree, Iker Perez del Palomar Sustatxa
From: Iker Perez del Palomar Sustatxa <iker.perez@codethink.co.uk>
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 | 7 +++++--
drivers/hwmon/lm75.c | 11 +++++++++++
2 files changed, 16 insertions(+), 2 deletions(-)
Version log:
- v4:
- Correct the sample time to 37 ms.
- v3:
- Bad assignment, missing spaces before and after "=".
- Divide in two lines longer than 80 characters.
- Separate dt-bindings and driver-documentation into different
commits.
- V2:
- Delete empty lines.
- Restore replaced tabs by spaces
diff --git a/Documentation/hwmon/lm75 b/Documentation/hwmon/lm75
index 010583608f12..0cff924cdbba 100644
--- a/Documentation/hwmon/lm75
+++ b/Documentation/hwmon/lm75
@@ -47,8 +47,10 @@ 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 +58,7 @@ 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 447af07450f1..5673fa541f16 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -59,6 +59,7 @@ enum lm75_type { /* keep sorted in alphabetical order */
tmp175,
tmp275,
tmp75,
+ tmp75b,
tmp75c,
};
@@ -378,6 +379,11 @@ 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: /* not one-shot mode, Conversion rate 37Hz */
+ clr_mask |= 1 << 15 | 0x3 << 13;
+ data->resolution = 12;
+ data->sample_time = MSEC_PER_SEC / 37;
+ break;
case tmp75c:
clr_mask |= 1 << 5; /* not one-shot mode */
data->resolution = 12;
@@ -438,6 +444,7 @@ static const struct i2c_device_id lm75_ids[] = {
{ "tmp175", tmp175, },
{ "tmp275", tmp275, },
{ "tmp75", tmp75, },
+ { "tmp75b", tmp75b, },
{ "tmp75c", tmp75c, },
{ /* LIST END */ }
};
@@ -537,6 +544,10 @@ 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
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH v4 2/2] dt-bindings: hwmon: Add tmp75b to lm75.txt
2019-05-03 16:14 [PATCH v4 0/2] Support for TMP75B temperature sensor Iker Perez
2019-05-03 16:15 ` [PATCH v4 1/2] hwmon: (lm75) Add support for TMP75B Iker Perez
@ 2019-05-03 16:15 ` Iker Perez
2019-05-03 20:16 ` [PATCH v4 0/2] Support for TMP75B temperature sensor Guenter Roeck
2 siblings, 0 replies; 4+ messages in thread
From: Iker Perez @ 2019-05-03 16:15 UTC (permalink / raw)
To: linux-hwmon; +Cc: linux, devicetree, Iker Perez del Palomar Sustatxa
From: Iker Perez del Palomar Sustatxa <iker.perez@codethink.co.uk>
Update the LM75's devicetree definition to allow Texas Instruments
TMP75B be probed.
Signed-off-by: Iker Perez del Palomar Sustatxa <iker.perez@codethink.co.uk>
---
Documentation/devicetree/bindings/hwmon/lm75.txt | 1 +
1 file changed, 1 insertion(+)
Version log:
- V4:
- Improve the commit description message.
- V3:
- Separate dt-bindings and driver-documentation into different
commits.
diff --git a/Documentation/devicetree/bindings/hwmon/lm75.txt b/Documentation/devicetree/bindings/hwmon/lm75.txt
index 12d8cf7cf592..586b5ed70be7 100644
--- a/Documentation/devicetree/bindings/hwmon/lm75.txt
+++ b/Documentation/devicetree/bindings/hwmon/lm75.txt
@@ -25,6 +25,7 @@ Required properties:
"ti,tmp175",
"ti,tmp275",
"ti,tmp75",
+ "ti,tmp75b",
"ti,tmp75c",
- reg: I2C bus address of the device
--
2.11.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v4 0/2] Support for TMP75B temperature sensor
2019-05-03 16:14 [PATCH v4 0/2] Support for TMP75B temperature sensor Iker Perez
2019-05-03 16:15 ` [PATCH v4 1/2] hwmon: (lm75) Add support for TMP75B Iker Perez
2019-05-03 16:15 ` [PATCH v4 2/2] dt-bindings: hwmon: Add tmp75b to lm75.txt Iker Perez
@ 2019-05-03 20:16 ` Guenter Roeck
2 siblings, 0 replies; 4+ messages in thread
From: Guenter Roeck @ 2019-05-03 20:16 UTC (permalink / raw)
To: Iker Perez; +Cc: linux-hwmon, devicetree
On Fri, May 03, 2019 at 05:14:59PM +0100, Iker Perez wrote:
> From: Iker Perez del Palomar Sustatxa <iker.perez@codethink.co.uk>
>
> This patch series adds support for the TMP75 temperature sensor to the
> lm75.c driver. Although the TMP75B has a configurable conversion rate,
> this series just sets it to the default rate of 37Hz. Sample rate is set
> close to this.
>
> In the future, I want to develop a function that allows the user choose
> the preferred conversion rate from user-land.
>
>
> Iker Perez del Palomar Sustatxa (2):
> hwmon: (lm75) Add support for TMP75B
> dt-bindings: hwmon: Add tmp75b to lm75.txt
>
Series applied to hwmon-next.
Thanks,
Guenter
^ permalink raw reply [flat|nested] 4+ messages in thread
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Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2019-05-03 16:14 [PATCH v4 0/2] Support for TMP75B temperature sensor Iker Perez
2019-05-03 16:15 ` [PATCH v4 1/2] hwmon: (lm75) Add support for TMP75B Iker Perez
2019-05-03 16:15 ` [PATCH v4 2/2] dt-bindings: hwmon: Add tmp75b to lm75.txt Iker Perez
2019-05-03 20:16 ` [PATCH v4 0/2] Support for TMP75B temperature sensor Guenter Roeck
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