---

yaml
---
r: 363028
b: refs/heads/master
c: 51c2a48
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c55dc91e92bdf21427dd8f5ad779ed9d63caacbd
+refs/heads/master: 51c2a4871c1b47255ff8d74f0a86b2a0defff319

trunk/Documentation/hwmon/adt7410

@@ -12,29 +12,42 @@ Supported chips:
     Addresses scanned: None
     Datasheet: Publicly available at the Analog Devices website
                http://www.analog.com/static/imported-files/data_sheets/ADT7420.pdf
+  * Analog Devices ADT7310
+    Prefix: 'adt7310'
+    Addresses scanned: None
+    Datasheet: Publicly available at the Analog Devices website
+               http://www.analog.com/static/imported-files/data_sheets/ADT7310.pdf
+  * Analog Devices ADT7320
+    Prefix: 'adt7320'
+    Addresses scanned: None
+    Datasheet: Publicly available at the Analog Devices website
+               http://www.analog.com/static/imported-files/data_sheets/ADT7320.pdf
 
 Author: Hartmut Knaack <knaack.h@gmx.de>
 
 Description
 -----------
 
-The ADT7410 is a temperature sensor with rated temperature range of -55°C to
-+150°C. It has a high accuracy of +/-0.5°C and can be operated at a resolution
-of 13 bits (0.0625°C) or 16 bits (0.0078°C). The sensor provides an INT pin to
-indicate that a minimum or maximum temperature set point has been exceeded, as
-well as a critical temperature (CT) pin to indicate that the critical
-temperature set point has been exceeded. Both pins can be set up with a common
-hysteresis of 0°C - 15°C and a fault queue, ranging from 1 to 4 events. Both
-pins can individually set to be active-low or active-high, while the whole
-device can either run in comparator mode or interrupt mode. The ADT7410
-supports continous temperature sampling, as well as sampling one temperature
-value per second or even justget one sample on demand for power saving.
-Besides, it can completely power down its ADC, if power management is
-required.
-
-The ADT7420 is register compatible, the only differences being the package,
-a slightly narrower operating temperature range (-40°C to +150°C), and a
-better accuracy (0.25°C instead of 0.50°C.)
+The ADT7310/ADT7410 is a temperature sensor with rated temperature range of
+-55°C to +150°C. It has a high accuracy of +/-0.5°C and can be operated at a
+resolution of 13 bits (0.0625°C) or 16 bits (0.0078°C). The sensor provides an
+INT pin to indicate that a minimum or maximum temperature set point has been
+exceeded, as well as a critical temperature (CT) pin to indicate that the
+critical temperature set point has been exceeded. Both pins can be set up with a
+common hysteresis of 0°C - 15°C and a fault queue, ranging from 1 to 4 events.
+Both pins can individually set to be active-low or active-high, while the whole
+device can either run in comparator mode or interrupt mode. The ADT7410 supports
+continuous temperature sampling, as well as sampling one temperature value per
+second or even just get one sample on demand for power saving. Besides, it can
+completely power down its ADC, if power management is required.
+
+The ADT7320/ADT7420 is register compatible, the only differences being the
+package, a slightly narrower operating temperature range (-40°C to +150°C), and
+a better accuracy (0.25°C instead of 0.50°C.)
+
+The difference between the ADT7310/ADT7320 and ADT7410/ADT7420 is the control
+interface, the ADT7310 and ADT7320 use SPI while the ADT7410 and ADT7420 use
+I2C.
 
 Configuration Notes
 -------------------

trunk/drivers/hwmon/Kconfig

@@ -179,9 +179,29 @@ config SENSORS_ADM9240
 	  This driver can also be built as a module.  If so, the module
 	  will be called adm9240.
 
+config SENSORS_ADT7X10
+	tristate
+	help
+	  This module contains common code shared by the ADT7310/ADT7320 and
+	  ADT7410/ADT7420 temperature monitoring chip drivers.
+
+	  If build as a module, the module will be called adt7x10.
+
+config SENSORS_ADT7310
+	tristate "Analog Devices ADT7310/ADT7320"
+	depends on SPI_MASTER
+	select SENSORS_ADT7X10
+	help
+	  If you say yes here you get support for the Analog Devices
+	  ADT7310 and ADT7320 temperature monitoring chips.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called adt7310.
+
 config SENSORS_ADT7410
 	tristate "Analog Devices ADT7410/ADT7420"
 	depends on I2C
+	select SENSORS_ADT7X10
 	help
 	  If you say yes here you get support for the Analog Devices
 	  ADT7410 and ADT7420 temperature monitoring chips.

trunk/drivers/hwmon/Makefile

@@ -34,6 +34,8 @@ obj-$(CONFIG_SENSORS_ADM9240)	+= adm9240.o
 obj-$(CONFIG_SENSORS_ADS1015)	+= ads1015.o
 obj-$(CONFIG_SENSORS_ADS7828)	+= ads7828.o
 obj-$(CONFIG_SENSORS_ADS7871)	+= ads7871.o
+obj-$(CONFIG_SENSORS_ADT7X10)	+= adt7x10.o
+obj-$(CONFIG_SENSORS_ADT7310)	+= adt7310.o
 obj-$(CONFIG_SENSORS_ADT7410)	+= adt7410.o
 obj-$(CONFIG_SENSORS_ADT7411)	+= adt7411.o
 obj-$(CONFIG_SENSORS_ADT7462)	+= adt7462.o

trunk/drivers/hwmon/adt7310.c

@@ -0,0 +1,123 @@
+/*
+ * ADT7310/ADT7310 digital temperature sensor driver
+ *
+ * Copyright 2012-2013 Analog Devices Inc.
+ *   Author: Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/spi/spi.h>
+#include <asm/unaligned.h>
+
+#include "adt7x10.h"
+
+#define ADT7310_STATUS			0
+#define ADT7310_CONFIG			1
+#define ADT7310_TEMPERATURE		2
+#define ADT7310_ID			3
+#define ADT7310_T_CRIT			4
+#define ADT7310_T_HYST			5
+#define ADT7310_T_ALARM_HIGH		6
+#define ADT7310_T_ALARM_LOW		7
+
+static const u8 adt7310_reg_table[] = {
+	[ADT7X10_TEMPERATURE]   = ADT7310_TEMPERATURE,
+	[ADT7X10_STATUS]	= ADT7310_STATUS,
+	[ADT7X10_CONFIG]	= ADT7310_CONFIG,
+	[ADT7X10_T_ALARM_HIGH]	= ADT7310_T_ALARM_HIGH,
+	[ADT7X10_T_ALARM_LOW]	= ADT7310_T_ALARM_LOW,
+	[ADT7X10_T_CRIT]	= ADT7310_T_CRIT,
+	[ADT7X10_T_HYST]	= ADT7310_T_HYST,
+	[ADT7X10_ID]		= ADT7310_ID,
+};
+
+#define ADT7310_CMD_REG_OFFSET	3
+#define ADT7310_CMD_READ	0x40
+
+#define AD7310_COMMAND(reg) (adt7310_reg_table[(reg)] << ADT7310_CMD_REG_OFFSET)
+
+static int adt7310_spi_read_word(struct device *dev, u8 reg)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	int ret;
+
+	ret = spi_w8r16(spi, AD7310_COMMAND(reg) | ADT7310_CMD_READ);
+	if (ret < 0)
+		return ret;
+
+	return be16_to_cpu(ret);
+}
+
+static int adt7310_spi_write_word(struct device *dev, u8 reg, u16 data)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	u8 buf[3];
+
+	buf[0] = AD7310_COMMAND(reg);
+	put_unaligned_be16(data, &buf[1]);
+
+	return spi_write(spi, buf, sizeof(buf));
+}
+
+static int adt7310_spi_read_byte(struct device *dev, u8 reg)
+{
+	struct spi_device *spi = to_spi_device(dev);
+
+	return spi_w8r8(spi, AD7310_COMMAND(reg) | ADT7310_CMD_READ);
+}
+
+static int adt7310_spi_write_byte(struct device *dev, u8 reg,
+	u8 data)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	u8 buf[2];
+
+	buf[0] = AD7310_COMMAND(reg);
+	buf[1] = data;
+
+	return spi_write(spi, buf, sizeof(buf));
+}
+
+static const struct adt7x10_ops adt7310_spi_ops = {
+	.read_word = adt7310_spi_read_word,
+	.write_word = adt7310_spi_write_word,
+	.read_byte = adt7310_spi_read_byte,
+	.write_byte = adt7310_spi_write_byte,
+};
+
+static int adt7310_spi_probe(struct spi_device *spi)
+{
+	return adt7x10_probe(&spi->dev, spi_get_device_id(spi)->name,
+			&adt7310_spi_ops);
+}
+
+static int adt7310_spi_remove(struct spi_device *spi)
+{
+	return adt7x10_remove(&spi->dev);
+}
+
+static const struct spi_device_id adt7310_id[] = {
+	{ "adt7310", 0 },
+	{ "adt7320", 0 },
+	{}
+};
+MODULE_DEVICE_TABLE(spi, adt7310_id);
+
+static struct spi_driver adt7310_driver = {
+	.driver = {
+		.name	= "adt7310",
+		.owner	= THIS_MODULE,
+		.pm	= ADT7X10_DEV_PM_OPS,
+	},
+	.probe		= adt7310_spi_probe,
+	.remove		= adt7310_spi_remove,
+	.id_table	= adt7310_id,
+};
+module_spi_driver(adt7310_driver);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("ADT7310/ADT7320 driver");
+MODULE_LICENSE("GPL");