linux-kernel - [PATCH 2/2] hwmon: (lm75) Add Atmel AT30TS74 support

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Message-ID: <7160dc31-1429-1206-ec4b-1d8cc0652b27@axentia.se>
Date:   Mon, 25 Apr 2022 07:59:18 +0200
From:   Peter Rosin <peda@...ntia.se>
To:     linux-kernel@...r.kernel.org
Cc:     Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-hwmon@...r.kernel.org, devicetree@...r.kernel.org
Subject: [PATCH 2/2] hwmon: (lm75) Add Atmel AT30TS74 support

Atmel (now Microchip) AT30TS74 is an LM75 compatible sensor. Add it.

Signed-off-by: Peter Rosin <peda@...ntia.se>
---
  drivers/hwmon/Kconfig |  1 +
  drivers/hwmon/lm75.c  | 14 ++++++++++++++
  2 files changed, 15 insertions(+)

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 68a8a27ab3b7..d8dc58b2c55a 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -1248,6 +1248,7 @@ config SENSORS_LM75
  	  temperature sensor chip, with models including:
  
  		- Analog Devices ADT75
+		- Atmel (now Microchip) AT30TS74
  		- Dallas Semiconductor DS75, DS1775 and DS7505
  		- Global Mixed-mode Technology (GMT) G751
  		- Maxim MAX6625 and MAX6626
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index afdbb63237b9..66dc826f7962 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -26,6 +26,7 @@
  
  enum lm75_type {		/* keep sorted in alphabetical order */
  	adt75,
+	at30ts74,
  	ds1775,
  	ds75,
  	ds7505,
@@ -128,6 +129,14 @@ static const struct lm75_params device_params[] = {
  		.default_resolution = 12,
  		.default_sample_time = MSEC_PER_SEC / 10,
  	},
+	[at30ts74] = {
+		.set_mask = 3 << 5,	/* 12-bit mode*/
+		.default_resolution = 12,
+		.default_sample_time = 200,
+		.num_sample_times = 4,
+		.sample_times = (unsigned int []){ 25, 50, 100, 200 },
+		.resolutions = (u8 []) {9, 10, 11, 12 },
+	},
  	[ds1775] = {
  		.clr_mask = 3 << 5,
  		.set_mask = 2 << 5,	/* 11-bit mode */
@@ -645,6 +654,7 @@ static int lm75_probe(struct i2c_client *client)
  
  static const struct i2c_device_id lm75_ids[] = {
  	{ "adt75", adt75, },
+	{ "at30ts74", at30ts74, },
  	{ "ds1775", ds1775, },
  	{ "ds75", ds75, },
  	{ "ds7505", ds7505, },
@@ -680,6 +690,10 @@ static const struct of_device_id __maybe_unused lm75_of_match[] = {
  		.compatible = "adi,adt75",
  		.data = (void *)adt75
  	},
+	{
+		.compatible = "atmel,at30ts74",
+		.data = (void *)at30ts74
+	},
  	{
  		.compatible = "dallas,ds1775",
  		.data = (void *)ds1775
-- 
2.20.1