Merge branch 'quilt/jdelvare-hwmon'

23 files changed, 644 insertions, 101 deletions

diff --git a/Documentation/hwmon/ads1015 b/Documentation/hwmon/ads1015
new file mode 100644
index 000000000000..56ee7977b1a8
--- /dev/null
+++ b/Documentation/hwmon/ads1015
@@ -0,0 +1,67 @@
+Kernel driver ads1015
+=====================
+
+Supported chips:
+  * Texas Instruments ADS1015
+    Prefix: 'ads1015'
+    Datasheet: Publicly available at the Texas Instruments website :
+               http://focus.ti.com/lit/ds/symlink/ads1015.pdf
+
+Authors:
+        Dirk Eibach, Guntermann & Drunck GmbH <eibach@gdsys.de>
+
+Description
+-----------
+
+This driver implements support for the Texas Instruments ADS1015.
+
+This device is a 12-bit A-D converter with 4 inputs.
+
+The inputs can be used single ended or in certain differential combinations.
+
+The inputs can be exported to 8 sysfs input files in0_input - in7_input:
+in0: Voltage over AIN0 and AIN1.
+in1: Voltage over AIN0 and AIN3.
+in2: Voltage over AIN1 and AIN3.
+in3: Voltage over AIN2 and AIN3.
+in4: Voltage over AIN0 and GND.
+in5: Voltage over AIN1 and GND.
+in6: Voltage over AIN2 and GND.
+in7: Voltage over AIN3 and GND.
+
+Which inputs are exported can be configured using platform data or devicetree.
+
+By default all inputs are exported.
+
+Platform Data
+-------------
+
+In linux/i2c/ads1015.h platform data is defined as:
+
+struct ads1015_platform_data {
+	unsigned int exported_channels;
+};
+
+exported_channels is a bitmask that specifies which inputs should be exported.
+
+Example:
+struct ads1015_platform_data data = {
+	.exported_channels = (1 << 2) | (1 << 4)
+};
+
+In this case only in2_input and in4_input would be created.
+
+Devicetree
+----------
+
+The ads1015 node may have an "exported-channels" property.
+exported_channels is a bitmask that specifies which inputs should be exported.
+
+Example:
+ads1015@49 {
+	compatible = "ti,ads1015";
+	reg = <0x49>;
+	exported-channels = < 0x14 >;
+};
+
+In this case only in2_input and in4_input would be created.
diff --git a/Documentation/hwmon/lm75 b/Documentation/hwmon/lm75
index 8e6356fe05d7..a1790401fdde 100644
--- a/Documentation/hwmon/lm75
+++ b/Documentation/hwmon/lm75
@@ -7,6 +7,11 @@ Supported chips:
     Addresses scanned: I2C 0x48 - 0x4f
     Datasheet: Publicly available at the National Semiconductor website
                http://www.national.com/
+  * National Semiconductor LM75A
+    Prefix: 'lm75a'
+    Addresses scanned: I2C 0x48 - 0x4f
+    Datasheet: Publicly available at the National Semiconductor website
+               http://www.national.com/
   * Dallas Semiconductor DS75
     Prefix: 'lm75'
     Addresses scanned: I2C 0x48 - 0x4f
diff --git a/Documentation/hwmon/w83795 b/Documentation/hwmon/w83795
new file mode 100644
index 000000000000..9f160371f463
--- /dev/null
+++ b/Documentation/hwmon/w83795
@@ -0,0 +1,127 @@
+Kernel driver w83795
+====================
+
+Supported chips:
+  * Winbond/Nuvoton W83795G
+    Prefix: 'w83795g'
+    Addresses scanned: I2C 0x2c - 0x2f
+    Datasheet: Available for download on nuvoton.com
+  * Winbond/Nuvoton W83795ADG
+    Prefix: 'w83795adg'
+    Addresses scanned: I2C 0x2c - 0x2f
+    Datasheet: Available for download on nuvoton.com
+
+Authors:
+    Wei Song (Nuvoton)
+    Jean Delvare <khali@linux-fr.org>
+
+
+Pin mapping
+-----------
+
+Here is a summary of the pin mapping for the W83795G and W83795ADG.
+This can be useful to convert data provided by board manufacturers
+into working libsensors configuration statements.
+
+    W83795G			|
+  Pin	| Name			| Register	| Sysfs attribute
+------------------------------------------------------------------
+   13	| VSEN1 (VCORE1)	| 10h		| in0
+   14	| VSEN2 (VCORE2)	| 11h		| in1
+   15	| VSEN3 (VCORE3)	| 12h		| in2
+   16	| VSEN4			| 13h		| in3
+   17	| VSEN5			| 14h		| in4
+   18	| VSEN6			| 15h		| in5
+   19	| VSEN7			| 16h		| in6
+   20	| VSEN8			| 17h		| in7
+   21	| VSEN9			| 18h		| in8
+   22	| VSEN10		| 19h		| in9
+   23	| VSEN11		| 1Ah		| in10
+   28	| VTT			| 1Bh		| in11
+   24	| 3VDD			| 1Ch		| in12
+   25	| 3VSB			| 1Dh		| in13
+   26	| VBAT			| 1Eh		| in14
+    3	| VSEN12/TR5		| 1Fh		| in15/temp5
+    4	| VSEN13/TR5		| 20h		| in16/temp6
+  5/  6	| VDSEN14/TR1/TD1	| 21h		| in17/temp1
+  7/  8	| VDSEN15/TR2/TD2	| 22h		| in18/temp2
+  9/ 10	| VDSEN16/TR3/TD3	| 23h		| in19/temp3
+ 11/ 12	| VDSEN17/TR4/TD4	| 24h		| in20/temp4
+   40	| FANIN1		| 2Eh		| fan1
+   42	| FANIN2		| 2Fh		| fan2
+   44	| FANIN3		| 30h		| fan3
+   46	| FANIN4		| 31h		| fan4
+   48	| FANIN5		| 32h		| fan5
+   50	| FANIN6		| 33h		| fan6
+   52	| FANIN7		| 34h		| fan7
+   54	| FANIN8		| 35h		| fan8
+   57	| FANIN9		| 36h		| fan9
+   58	| FANIN10		| 37h		| fan10
+   59	| FANIN11		| 38h		| fan11
+   60	| FANIN12		| 39h		| fan12
+   31	| FANIN13		| 3Ah		| fan13
+   35	| FANIN14		| 3Bh		| fan14
+   41	| FANCTL1		| 10h (bank 2)	| pwm1
+   43	| FANCTL2		| 11h (bank 2)	| pwm2
+   45	| FANCTL3		| 12h (bank 2)	| pwm3
+   47	| FANCTL4		| 13h (bank 2)	| pwm4
+   49	| FANCTL5		| 14h (bank 2)	| pwm5
+   51	| FANCTL6		| 15h (bank 2)	| pwm6
+   53	| FANCTL7		| 16h (bank 2)	| pwm7
+   55	| FANCTL8		| 17h (bank 2)	| pwm8
+ 29/ 30	| PECI/TSI (DTS1)	| 26h		| temp7
+ 29/ 30	| PECI/TSI (DTS2)	| 27h		| temp8
+ 29/ 30	| PECI/TSI (DTS3)	| 28h		| temp9
+ 29/ 30	| PECI/TSI (DTS4)	| 29h		| temp10
+ 29/ 30	| PECI/TSI (DTS5)	| 2Ah		| temp11
+ 29/ 30	| PECI/TSI (DTS6)	| 2Bh		| temp12
+ 29/ 30	| PECI/TSI (DTS7)	| 2Ch		| temp13
+ 29/ 30	| PECI/TSI (DTS8)	| 2Dh		| temp14
+   27	| CASEOPEN#		| 46h		| intrusion0
+
+    W83795ADG			|
+  Pin	| Name			| Register	| Sysfs attribute
+------------------------------------------------------------------
+   10	| VSEN1 (VCORE1)	| 10h		| in0
+   11	| VSEN2 (VCORE2)	| 11h		| in1
+   12	| VSEN3 (VCORE3)	| 12h		| in2
+   13	| VSEN4			| 13h		| in3
+   14	| VSEN5			| 14h		| in4
+   15	| VSEN6			| 15h		| in5
+   16	| VSEN7			| 16h		| in6
+   17	| VSEN8			| 17h		| in7
+   22	| VTT			| 1Bh		| in11
+   18	| 3VDD			| 1Ch		| in12
+   19	| 3VSB			| 1Dh		| in13
+   20	| VBAT			| 1Eh		| in14
+   48	| VSEN12/TR5		| 1Fh		| in15/temp5
+    1	| VSEN13/TR5		| 20h		| in16/temp6
+  2/  3	| VDSEN14/TR1/TD1	| 21h		| in17/temp1
+  4/  5	| VDSEN15/TR2/TD2	| 22h		| in18/temp2
+  6/  7	| VDSEN16/TR3/TD3	| 23h		| in19/temp3
+  8/  9	| VDSEN17/TR4/TD4	| 24h		| in20/temp4
+   32	| FANIN1		| 2Eh		| fan1
+   34	| FANIN2		| 2Fh		| fan2
+   36	| FANIN3		| 30h		| fan3
+   37	| FANIN4		| 31h		| fan4
+   38	| FANIN5		| 32h		| fan5
+   39	| FANIN6		| 33h		| fan6
+   40	| FANIN7		| 34h		| fan7
+   41	| FANIN8		| 35h		| fan8
+   43	| FANIN9		| 36h		| fan9
+   44	| FANIN10		| 37h		| fan10
+   45	| FANIN11		| 38h		| fan11
+   46	| FANIN12		| 39h		| fan12
+   24	| FANIN13		| 3Ah		| fan13
+   28	| FANIN14		| 3Bh		| fan14
+   33	| FANCTL1		| 10h (bank 2)	| pwm1
+   35	| FANCTL2		| 11h (bank 2)	| pwm2
+   23	| PECI (DTS1)		| 26h		| temp7
+   23	| PECI (DTS2)		| 27h		| temp8
+   23	| PECI (DTS3)		| 28h		| temp9
+   23	| PECI (DTS4)		| 29h		| temp10
+   23	| PECI (DTS5)		| 2Ah		| temp11
+   23	| PECI (DTS6)		| 2Bh		| temp12
+   23	| PECI (DTS7)		| 2Ch		| temp13
+   23	| PECI (DTS8)		| 2Dh		| temp14
+   21	| CASEOPEN#		| 46h		| intrusion0
diff --git a/Documentation/hwmon/hpfall.c b/Documentation/laptops/hpfall.c
index a4a8fc5d05d4..a4a8fc5d05d4 100644
--- a/Documentation/hwmon/hpfall.c
+++ b/Documentation/laptops/hpfall.c
diff --git a/Documentation/hwmon/lis3lv02d b/Documentation/misc-devices/lis3lv02d
index 06534f25e643..f1a4ec840f86 100644
--- a/Documentation/hwmon/lis3lv02d
+++ b/Documentation/misc-devices/lis3lv02d
@@ -17,8 +17,8 @@ Description
 This driver provides support for the accelerometer found in various HP laptops
 sporting the feature officially called "HP Mobile Data Protection System 3D" or
 "HP 3D DriveGuard". It detects automatically laptops with this sensor. Known
-models (full list can be found in drivers/hwmon/hp_accel.c) will have their
-axis automatically oriented on standard way (eg: you can directly play
+models (full list can be found in drivers/platform/x86/hp_accel.c) will have
+their axis automatically oriented on standard way (eg: you can directly play
 neverball). The accelerometer data is readable via
 /sys/devices/platform/lis3lv02d. Reported values are scaled
 to mg values (1/1000th of earth gravity).
diff --git a/MAINTAINERS b/MAINTAINERS
index d6fe7f842ee7..eb8df8e20ea0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -365,6 +365,14 @@ W:	http://wiki-analog.com/ADP8860
 S:	Supported
 F:	drivers/video/backlight/adp8860_bl.c
 
+ADS1015 HARDWARE MONITOR DRIVER
+M:	Dirk Eibach <eibach@gdsys.de>
+L:	lm-sensors@lm-sensors.org
+S:	Maintained
+F:	Documentation/hwmon/ads1015
+F:	drivers/hwmon/ads1015.c
+F:	include/linux/i2c/ads1015.h
+
 ADT746X FAN DRIVER
 M:	Colin Leroy <colin@colino.net>
 S:	Maintained
@@ -3913,8 +3921,8 @@ F:	net/llc/
 LIS3LV02D ACCELEROMETER DRIVER
 M:	Eric Piel <eric.piel@tremplin-utc.net>
 S:	Maintained
-F:	Documentation/hwmon/lis3lv02d
-F:	drivers/hwmon/lis3lv02d.*
+F:	Documentation/misc-devices/lis3lv02d
+F:	drivers/misc/lis3lv02d/
 
 LM73 HARDWARE MONITOR DRIVER
 M:	Guillaume Ligneul <guillaume.ligneul@gmail.com>
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 297bc9a7d6e6..bc5d0a1cdac0 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -510,7 +510,7 @@ config SENSORS_LM75
 		- Dallas Semiconductor DS75 and DS1775
 		- Maxim MAX6625 and MAX6626
 		- Microchip MCP980x
-		- National Semiconductor LM75
+		- National Semiconductor LM75, LM75A
 		- NXP's LM75A
 		- ST Microelectronics STDS75
 		- TelCom (now Microchip) TCN75
@@ -872,6 +872,16 @@ config SENSORS_SMSC47B397
 	  This driver can also be built as a module.  If so, the module
 	  will be called smsc47b397.
 
+config SENSORS_ADS1015
+	tristate "Texas Instruments ADS1015"
+	depends on I2C
+	help
+	  If you say yes here you get support for Texas Instruments ADS1015
+	  12-bit 4-input ADC device.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called ads1015.
+
 config SENSORS_ADS7828
 	tristate "Texas Instruments ADS7828"
 	depends on I2C
@@ -1127,40 +1137,6 @@ config SENSORS_ULTRA45
 	  This driver provides support for the Ultra45 workstation environmental
 	  sensors.
 
-config SENSORS_LIS3_SPI
-	tristate "STMicroeletronics LIS3LV02Dx three-axis digital accelerometer (SPI)"
-	depends on !ACPI && SPI_MASTER && INPUT
-	select INPUT_POLLDEV
-	default n
-	help
-	  This driver provides support for the LIS3LV02Dx accelerometer connected
-	  via SPI. The accelerometer data is readable via
-	  /sys/devices/platform/lis3lv02d.
-
-	  This driver also provides an absolute input class device, allowing
-	  the laptop to act as a pinball machine-esque joystick.
-
-	  This driver can also be built as modules.  If so, the core module
-	  will be called lis3lv02d and a specific module for the SPI transport
-	  is called lis3lv02d_spi.
-
-config SENSORS_LIS3_I2C
-	tristate "STMicroeletronics LIS3LV02Dx three-axis digital accelerometer (I2C)"
-	depends on I2C && INPUT
-	select INPUT_POLLDEV
-	default n
-	help
-	  This driver provides support for the LIS3LV02Dx accelerometer connected
-	  via I2C. The accelerometer data is readable via
-	  /sys/devices/platform/lis3lv02d.
-
-	  This driver also provides an absolute input class device, allowing
-	  the device to act as a pinball machine-esque joystick.
-
-	  This driver can also be built as modules.  If so, the core module
-	  will be called lis3lv02d and a specific module for the I2C transport
-	  is called lis3lv02d_i2c.
-
 config SENSORS_APPLESMC
 	tristate "Apple SMC (Motion sensor, light sensor, keyboard backlight)"
 	depends on INPUT && X86
@@ -1208,36 +1184,6 @@ config SENSORS_ATK0110
 	  This driver can also be built as a module. If so, the module
 	  will be called asus_atk0110.
 
-config SENSORS_LIS3LV02D
-	tristate "STMicroeletronics LIS3* three-axis digital accelerometer"
-	depends on INPUT
-	select INPUT_POLLDEV
-	select NEW_LEDS
-	select LEDS_CLASS
-	default n
-	help
-	  This driver provides support for the LIS3* accelerometers, such as the
-	  LIS3LV02DL or the LIS331DL. In particular, it can be found in a number
-	  of HP laptops, which have the "Mobile Data Protection System 3D" or
-	  "3D DriveGuard" feature. On such systems the driver should load
-	  automatically (via ACPI alias). The accelerometer might also be found
-	  in other systems, connected via SPI or I2C. The accelerometer data is
-	  readable via /sys/devices/platform/lis3lv02d.
-
-	  This driver also provides an absolute input class device, allowing
-	  a laptop to act as a pinball machine-esque joystick. It provides also
-	  a misc device which can be used to detect free-fall. On HP laptops,
-	  if the led infrastructure is activated, support for a led indicating
-	  disk protection will be provided as hp::hddprotect. For more
-	  information on the feature, refer to Documentation/hwmon/lis3lv02d.
-
-	  This driver can also be built as modules.  If so, the core module
-	  will be called lis3lv02d and a specific module for HP laptops will be
-	  called hp_accel.
-
-	  Say Y here if you have an applicable laptop and want to experience
-	  the awesome power of lis3lv02d.
-
 endif # ACPI
 
 endif # HWMON
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index dde02d99c238..ec8b9445def3 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -29,6 +29,7 @@ obj-$(CONFIG_SENSORS_ADM1026)	+= adm1026.o
 obj-$(CONFIG_SENSORS_ADM1029)	+= adm1029.o
 obj-$(CONFIG_SENSORS_ADM1031)	+= adm1031.o
 obj-$(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_ADT7411)	+= adt7411.o
@@ -62,9 +63,6 @@ obj-$(CONFIG_SENSORS_JC42)	+= jc42.o
 obj-$(CONFIG_SENSORS_JZ4740)	+= jz4740-hwmon.o
 obj-$(CONFIG_SENSORS_K8TEMP)	+= k8temp.o
 obj-$(CONFIG_SENSORS_K10TEMP)	+= k10temp.o
-obj-$(CONFIG_SENSORS_LIS3LV02D) += lis3lv02d.o hp_accel.o
-obj-$(CONFIG_SENSORS_LIS3_SPI)	+= lis3lv02d.o lis3lv02d_spi.o
-obj-$(CONFIG_SENSORS_LIS3_I2C)	+= lis3lv02d.o lis3lv02d_i2c.o
 obj-$(CONFIG_SENSORS_LM63)	+= lm63.o
 obj-$(CONFIG_SENSORS_LM70)	+= lm70.o
 obj-$(CONFIG_SENSORS_LM73)	+= lm73.o
diff --git a/drivers/hwmon/ads1015.c b/drivers/hwmon/ads1015.c
new file mode 100644
index 000000000000..8ef2b608fc66
--- /dev/null
+++ b/drivers/hwmon/ads1015.c
@@ -0,0 +1,268 @@
+/*
+ * ads1015.c - lm_sensors driver for ads1015 12-bit 4-input ADC
+ * (C) Copyright 2010
+ * Dirk Eibach, Guntermann & Drunck GmbH <eibach@gdsys.de>
+ *
+ * Based on the ads7828 driver by Steve Hardy.
+ *
+ * Datasheet available at: http://focus.ti.com/lit/ds/symlink/ads1015.pdf
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+
+#include <linux/i2c/ads1015.h>
+
+/* ADS1015 registers */
+enum {
+	ADS1015_CONVERSION = 0,
+	ADS1015_CONFIG = 1,
+};
+
+/* PGA fullscale voltages in mV */
+static const unsigned int fullscale_table[8] = {
+	6144, 4096, 2048, 1024, 512, 256, 256, 256 };
+
+#define ADS1015_CONFIG_CHANNELS 8
+#define ADS1015_DEFAULT_CHANNELS 0xff
+
+struct ads1015_data {
+	struct device *hwmon_dev;
+	struct mutex update_lock; /* mutex protect updates */
+};
+
+static s32 ads1015_read_reg(struct i2c_client *client, unsigned int reg)
+{
+	s32 data = i2c_smbus_read_word_data(client, reg);
+
+	return (data < 0) ? data : swab16(data);
+}
+
+static s32 ads1015_write_reg(struct i2c_client *client, unsigned int reg,
+			     u16 val)
+{
+	return i2c_smbus_write_word_data(client, reg, swab16(val));
+}
+
+static int ads1015_read_value(struct i2c_client *client, unsigned int channel,
+			      int *value)
+{
+	u16 config;
+	s16 conversion;
+	unsigned int pga;
+	int fullscale;
+	unsigned int k;
+	struct ads1015_data *data = i2c_get_clientdata(client);
+	int res;
+
+	mutex_lock(&data->update_lock);
+
+	/* get fullscale voltage */
+	res = ads1015_read_reg(client, ADS1015_CONFIG);
+	if (res < 0)
+		goto err_unlock;
+	config = res;
+	pga = (config >> 9) & 0x0007;
+	fullscale = fullscale_table[pga];
+
+	/* set channel and start single conversion */
+	config &= ~(0x0007 << 12);
+	config |= (1 << 15) | (1 << 8) | (channel & 0x0007) << 12;
+
+	/* wait until conversion finished */
+	res = ads1015_write_reg(client, ADS1015_CONFIG, config);
+	if (res < 0)
+		goto err_unlock;
+	for (k = 0; k < 5; ++k) {
+		schedule_timeout(msecs_to_jiffies(1));
+		res = ads1015_read_reg(client, ADS1015_CONFIG);
+		if (res < 0)
+			goto err_unlock;
+		config = res;
+		if (config & (1 << 15))
+			break;
+	}
+	if (k == 5) {
+		res = -EIO;
+		goto err_unlock;
+	}
+
+	res = ads1015_read_reg(client, ADS1015_CONVERSION);
+	if (res < 0)
+		goto err_unlock;
+	conversion = res;
+
+	mutex_unlock(&data->update_lock);
+
+	*value = DIV_ROUND_CLOSEST(conversion * fullscale, 0x7ff0);
+
+	return 0;
+
+err_unlock:
+	mutex_unlock(&data->update_lock);
+	return res;
+}
+
+/* sysfs callback function */
+static ssize_t show_in(struct device *dev, struct device_attribute *da,
+	char *buf)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+	struct i2c_client *client = to_i2c_client(dev);
+	int in;
+	int res;
+
+	res = ads1015_read_value(client, attr->index, &in);
+
+	return (res < 0) ? res : sprintf(buf, "%d\n", in);
+}
+
+static const struct sensor_device_attribute ads1015_in[] = {
+	SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
+	SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
+	SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
+	SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
+	SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
+	SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
+	SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
+	SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
+};
+
+/*
+ * Driver interface
+ */
+
+static int ads1015_remove(struct i2c_client *client)
+{
+	struct ads1015_data *data = i2c_get_clientdata(client);
+	int k;
+
+	hwmon_device_unregister(data->hwmon_dev);
+	for (k = 0; k < ADS1015_CONFIG_CHANNELS; ++k)
+		device_remove_file(&client->dev, &ads1015_in[k].dev_attr);
+	kfree(data);
+	return 0;
+}
+
+static unsigned int ads1015_get_exported_channels(struct i2c_client *client)
+{
+	struct ads1015_platform_data *pdata = dev_get_platdata(&client->dev);
+#ifdef CONFIG_OF
+	struct device_node *np = client->dev.of_node;
+	const __be32 *of_channels;
+	int of_channels_size;
+#endif
+
+	/* prefer platform data */
+	if (pdata)
+		return pdata->exported_channels;
+
+#ifdef CONFIG_OF
+	/* fallback on OF */
+	of_channels = of_get_property(np, "exported-channels",
+				      &of_channels_size);
+	if (of_channels && (of_channels_size == sizeof(*of_channels)))
+		return be32_to_cpup(of_channels);
+#endif
+
+	/* fallback on default configuration */
+	return ADS1015_DEFAULT_CHANNELS;
+}
+
+static int ads1015_probe(struct i2c_client *client,
+			 const struct i2c_device_id *id)
+{
+	struct ads1015_data *data;
+	int err;
+	unsigned int exported_channels;
+	unsigned int k;
+
+	data = kzalloc(sizeof(struct ads1015_data), GFP_KERNEL);
+	if (!data) {
+		err = -ENOMEM;
+		goto exit;
+	}
+
+	i2c_set_clientdata(client, data);
+	mutex_init(&data->update_lock);
+
+	/* build sysfs attribute group */
+	exported_channels = ads1015_get_exported_channels(client);
+	for (k = 0; k < ADS1015_CONFIG_CHANNELS; ++k) {
+		if (!(exported_channels & (1<<k)))
+			continue;
+		err = device_create_file(&client->dev, &ads1015_in[k].dev_attr);
+		if (err)
+			goto exit_free;
+	}
+
+	data->hwmon_dev = hwmon_device_register(&client->dev);
+	if (IS_ERR(data->hwmon_dev)) {
+		err = PTR_ERR(data->hwmon_dev);
+		goto exit_remove;
+	}
+
+	return 0;
+
+exit_remove:
+	for (k = 0; k < ADS1015_CONFIG_CHANNELS; ++k)
+		device_remove_file(&client->dev, &ads1015_in[k].dev_attr);
+exit_free:
+	kfree(data);
+exit:
+	return err;
+}
+
+static const struct i2c_device_id ads1015_id[] = {
+	{ "ads1015", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, ads1015_id);
+
+static struct i2c_driver ads1015_driver = {
+	.driver = {
+		.name = "ads1015",
+	},
+	.probe = ads1015_probe,
+	.remove = ads1015_remove,
+	.id_table = ads1015_id,
+};
+
+static int __init sensors_ads1015_init(void)
+{
+	return i2c_add_driver(&ads1015_driver);
+}
+
+static void __exit sensors_ads1015_exit(void)
+{
+	i2c_del_driver(&ads1015_driver);
+}
+
+MODULE_AUTHOR("Dirk Eibach <eibach@gdsys.de>");
+MODULE_DESCRIPTION("ADS1015 driver");
+MODULE_LICENSE("GPL");
+
+module_init(sensors_ads1015_init);
+module_exit(sensors_ads1015_exit);
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index f36eb80d227f..ef902d5d06ab 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -232,13 +232,16 @@ static const struct i2c_device_id lm75_ids[] = {
 };
 MODULE_DEVICE_TABLE(i2c, lm75_ids);
 
+#define LM75A_ID 0xA1
+
 /* Return 0 if detection is successful, -ENODEV otherwise */
 static int lm75_detect(struct i2c_client *new_client,
 		       struct i2c_board_info *info)
 {
 	struct i2c_adapter *adapter = new_client->adapter;
 	int i;
-	int cur, conf, hyst, os;
+	int conf, hyst, os;
+	bool is_lm75a = 0;
 
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
 				     I2C_FUNC_SMBUS_WORD_DATA))
@@ -250,37 +253,58 @@ static int lm75_detect(struct i2c_client *new_client,
 	   addresses 0x04-0x07 returning the last read value.
 	   The cycling+unused addresses combination is not tested,
 	   since it would significantly slow the detection down and would
-	   hardly add any value. */
+	   hardly add any value.
 
-	/* Unused addresses */
-	cur = i2c_smbus_read_word_data(new_client, 0);
-	conf = i2c_smbus_read_byte_data(new_client, 1);
-	hyst = i2c_smbus_read_word_data(new_client, 2);
-	if (i2c_smbus_read_word_data(new_client, 4) != hyst
-	 || i2c_smbus_read_word_data(new_client, 5) != hyst
-	 || i2c_smbus_read_word_data(new_client, 6) != hyst
-	 || i2c_smbus_read_word_data(new_client, 7) != hyst)
-		return -ENODEV;
-	os = i2c_smbus_read_word_data(new_client, 3);
-	if (i2c_smbus_read_word_data(new_client, 4) != os
-	 || i2c_smbus_read_word_data(new_client, 5) != os
-	 || i2c_smbus_read_word_data(new_client, 6) != os
-	 || i2c_smbus_read_word_data(new_client, 7) != os)
-		return -ENODEV;
+	   The National Semiconductor LM75A is different than earlier
+	   LM75s.  It has an ID byte of 0xaX (where X is the chip
+	   revision, with 1 being the only revision in existence) in
+	   register 7, and unused registers return 0xff rather than the
+	   last read value. */
 
 	/* Unused bits */
+	conf = i2c_smbus_read_byte_data(new_client, 1);
 	if (conf & 0xe0)
 		return -ENODEV;
 
+	/* First check for LM75A */
+	if (i2c_smbus_read_byte_data(new_client, 7) == LM75A_ID) {
+		/* LM75A returns 0xff on unused registers so
+		   just to be sure we check for that too. */
+		if (i2c_smbus_read_byte_data(new_client, 4) != 0xff
+		 || i2c_smbus_read_byte_data(new_client, 5) != 0xff
+		 || i2c_smbus_read_byte_data(new_client, 6) != 0xff)
+			return -ENODEV;
+		is_lm75a = 1;
+		hyst = i2c_smbus_read_byte_data(new_client, 2);
+		os = i2c_smbus_read_byte_data(new_client, 3);
+	} else { /* Traditional style LM75 detection */
+		/* Unused addresses */
+		hyst = i2c_smbus_read_byte_data(new_client, 2);
+		if (i2c_smbus_read_byte_data(new_client, 4) != hyst
+		 || i2c_smbus_read_byte_data(new_client, 5) != hyst
+		 || i2c_smbus_read_byte_data(new_client, 6) != hyst
+		 || i2c_smbus_read_byte_data(new_client, 7) != hyst)
+			return -ENODEV;
+		os = i2c_smbus_read_byte_data(new_client, 3);
+		if (i2c_smbus_read_byte_data(new_client, 4) != os
+		 || i2c_smbus_read_byte_data(new_client, 5) != os
+		 || i2c_smbus_read_byte_data(new_client, 6) != os
+		 || i2c_smbus_read_byte_data(new_client, 7) != os)
+			return -ENODEV;
+	}
+
 	/* Addresses cycling */
-	for (i = 8; i < 0xff; i += 8) {
+	for (i = 8; i <= 248; i += 40) {
 		if (i2c_smbus_read_byte_data(new_client, i + 1) != conf
-		 || i2c_smbus_read_word_data(new_client, i + 2) != hyst
-		 || i2c_smbus_read_word_data(new_client, i + 3) != os)
+		 || i2c_smbus_read_byte_data(new_client, i + 2) != hyst
+		 || i2c_smbus_read_byte_data(new_client, i + 3) != os)
+			return -ENODEV;
+		if (is_lm75a && i2c_smbus_read_byte_data(new_client, i + 7)
+				!= LM75A_ID)
 			return -ENODEV;
 	}
 
-	strlcpy(info->type, "lm75", I2C_NAME_SIZE);
+	strlcpy(info->type, is_lm75a ? "lm75a" : "lm75", I2C_NAME_SIZE);
 
 	return 0;
 }
diff --git a/drivers/hwmon/sht15.c b/drivers/hwmon/sht15.c
index a610e7880fb3..3ba7dd82589a 100644
--- a/drivers/hwmon/sht15.c
+++ b/drivers/hwmon/sht15.c
@@ -610,7 +610,7 @@ static int __devexit sht15_remove(struct platform_device *pdev)
 	struct sht15_data *data = platform_get_drvdata(pdev);
 
 	/* Make sure any reads from the device are done and
-	 * prevent new ones beginnning */
+	 * prevent new ones from beginning */
 	mutex_lock(&data->read_lock);
 	hwmon_device_unregister(data->hwmon_dev);
 	sysfs_remove_group(&pdev->dev.kobj, &sht15_attr_group);
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index cc8e49db45fe..a8ad7eacf0aa 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -2,6 +2,14 @@
 # Misc strange devices
 #
 
+# This one has to live outside of the MISC_DEVICES conditional,
+# because it may be selected by drivers/platform/x86/hp_accel.
+config SENSORS_LIS3LV02D
+	tristate
+	depends on INPUT
+	select INPUT_POLLDEV
+	default n
+
 menuconfig MISC_DEVICES
 	bool "Misc devices"
 	---help---
@@ -457,5 +465,6 @@ source "drivers/misc/eeprom/Kconfig"
 source "drivers/misc/cb710/Kconfig"
 source "drivers/misc/iwmc3200top/Kconfig"
 source "drivers/misc/ti-st/Kconfig"
+source "drivers/misc/lis3lv02d/Kconfig"
 
 endif # MISC_DEVICES
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 98009cc20cb9..804f421bc079 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -42,3 +42,4 @@ obj-$(CONFIG_ARM_CHARLCD)	+= arm-charlcd.o
 obj-$(CONFIG_PCH_PHUB)		+= pch_phub.o
 obj-y				+= ti-st/
 obj-$(CONFIG_AB8500_PWM)	+= ab8500-pwm.o
+obj-y				+= lis3lv02d/
diff --git a/drivers/misc/lis3lv02d/Kconfig b/drivers/misc/lis3lv02d/Kconfig
new file mode 100644
index 000000000000..8f474e6fc7b4
--- /dev/null
+++ b/drivers/misc/lis3lv02d/Kconfig
@@ -0,0 +1,37 @@
+#
+# STMicroelectonics LIS3LV02D and similar accelerometers
+#
+
+config SENSORS_LIS3_SPI
+	tristate "STMicroeletronics LIS3LV02Dx three-axis digital accelerometer (SPI)"
+	depends on !ACPI && SPI_MASTER && INPUT
+	select SENSORS_LIS3LV02D
+	default n
+	help
+	  This driver provides support for the LIS3LV02Dx accelerometer connected
+	  via SPI. The accelerometer data is readable via
+	  /sys/devices/platform/lis3lv02d.
+
+	  This driver also provides an absolute input class device, allowing
+	  the laptop to act as a pinball machine-esque joystick.
+
+	  This driver can also be built as modules.  If so, the core module
+	  will be called lis3lv02d and a specific module for the SPI transport
+	  is called lis3lv02d_spi.
+
+config SENSORS_LIS3_I2C
+	tristate "STMicroeletronics LIS3LV02Dx three-axis digital accelerometer (I2C)"
+	depends on I2C && INPUT
+	select SENSORS_LIS3LV02D
+	default n
+	help
+	  This driver provides support for the LIS3LV02Dx accelerometer connected
+	  via I2C. The accelerometer data is readable via
+	  /sys/devices/platform/lis3lv02d.
+
+	  This driver also provides an absolute input class device, allowing
+	  the device to act as a pinball machine-esque joystick.
+
+	  This driver can also be built as modules.  If so, the core module
+	  will be called lis3lv02d and a specific module for the I2C transport
+	  is called lis3lv02d_i2c.
diff --git a/drivers/misc/lis3lv02d/Makefile b/drivers/misc/lis3lv02d/Makefile
new file mode 100644
index 000000000000..4bf58b16fcf8
--- /dev/null
+++ b/drivers/misc/lis3lv02d/Makefile
@@ -0,0 +1,7 @@
+#
+# STMicroelectonics LIS3LV02D and similar accelerometers
+#
+
+obj-$(CONFIG_SENSORS_LIS3LV02D) += lis3lv02d.o
+obj-$(CONFIG_SENSORS_LIS3_SPI)	+= lis3lv02d_spi.o
+obj-$(CONFIG_SENSORS_LIS3_I2C)	+= lis3lv02d_i2c.o
diff --git a/drivers/hwmon/lis3lv02d.c b/drivers/misc/lis3lv02d/lis3lv02d.c
index d805e8e57967..b928bc14e97b 100644
--- a/drivers/hwmon/lis3lv02d.c
+++ b/drivers/misc/lis3lv02d/lis3lv02d.c
@@ -38,7 +38,7 @@
 #include <linux/uaccess.h>
 #include <linux/miscdevice.h>
 #include <linux/pm_runtime.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 #include "lis3lv02d.h"
 
 #define DRIVER_NAME     "lis3lv02d"
@@ -88,7 +88,6 @@
 struct lis3lv02d lis3_dev = {
 	.misc_wait   = __WAIT_QUEUE_HEAD_INITIALIZER(lis3_dev.misc_wait),
 };
-
 EXPORT_SYMBOL_GPL(lis3_dev);
 
 /* just like param_set_int() but does sanity-check so that it won't point
diff --git a/drivers/hwmon/lis3lv02d.h b/drivers/misc/lis3lv02d/lis3lv02d.h
index a1939589eb2c..a1939589eb2c 100644
--- a/drivers/hwmon/lis3lv02d.h
+++ b/drivers/misc/lis3lv02d/lis3lv02d.h
diff --git a/drivers/hwmon/lis3lv02d_i2c.c b/drivers/misc/lis3lv02d/lis3lv02d_i2c.c
index 8853afce85ce..b20dfb4522d2 100644
--- a/drivers/hwmon/lis3lv02d_i2c.c
+++ b/drivers/misc/lis3lv02d/lis3lv02d_i2c.c
@@ -33,7 +33,7 @@
 #include <linux/delay.h>
 #include "lis3lv02d.h"
 
-#define DRV_NAME 	"lis3lv02d_i2c"
+#define DRV_NAME	"lis3lv02d_i2c"
 
 static const char reg_vdd[]    = "Vdd";
 static const char reg_vdd_io[] = "Vdd_IO";
diff --git a/drivers/hwmon/lis3lv02d_spi.c b/drivers/misc/lis3lv02d/lis3lv02d_spi.c
index 2549de1de4e2..1e4bb64724d1 100644
--- a/drivers/hwmon/lis3lv02d_spi.c
+++ b/drivers/misc/lis3lv02d/lis3lv02d_spi.c
@@ -19,7 +19,7 @@
 
 #include "lis3lv02d.h"
 
-#define DRV_NAME 	"lis3lv02d_spi"
+#define DRV_NAME	"lis3lv02d_spi"
 #define LIS3_SPI_READ	0x80
 
 static int lis3_spi_read(struct lis3lv02d *lis3, int reg, u8 *v)
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index a59af5b24f0a..222dfb737b11 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -138,6 +138,24 @@ config TC1100_WMI
 	  This is a driver for the WMI extensions (wireless and bluetooth power
 	  control) of the HP Compaq TC1100 tablet.
 
+config HP_ACCEL
+	tristate "HP laptop accelerometer"
+	depends on INPUT && ACPI
+	select SENSORS_LIS3LV02D
+	select NEW_LEDS
+	select LEDS_CLASS
+	help
+	  This driver provides support for the "Mobile Data Protection System 3D"
+	  or "3D DriveGuard" feature of HP laptops. On such systems the driver
+	  should load automatically (via ACPI alias).
+
+	  Support for a led indicating disk protection will be provided as
+	  hp::hddprotect. For more information on the feature, refer to
+	  Documentation/hwmon/lis3lv02d.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called hp_accel.
+
 config HP_WMI
 	tristate "HP WMI extras"
 	depends on ACPI_WMI
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index 4ec4ff8f9182..299aefb3e74c 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_DELL_LAPTOP)	+= dell-laptop.o
 obj-$(CONFIG_DELL_WMI)		+= dell-wmi.o
 obj-$(CONFIG_ACER_WMI)		+= acer-wmi.o
 obj-$(CONFIG_ACERHDF)		+= acerhdf.o
+obj-$(CONFIG_HP_ACCEL)		+= hp_accel.o
 obj-$(CONFIG_HP_WMI)		+= hp-wmi.o
 obj-$(CONFIG_TC1100_WMI)	+= tc1100-wmi.o
 obj-$(CONFIG_SONY_LAPTOP)	+= sony-laptop.o
diff --git a/drivers/hwmon/hp_accel.c b/drivers/platform/x86/hp_accel.c
index 3d21fa2b97cd..16b233fac8f7 100644
--- a/drivers/hwmon/hp_accel.c
+++ b/drivers/platform/x86/hp_accel.c
@@ -35,11 +35,11 @@
 #include <linux/freezer.h>
 #include <linux/uaccess.h>
 #include <linux/leds.h>
+#include <linux/atomic.h>
 #include <acpi/acpi_drivers.h>
-#include <asm/atomic.h>
-#include "lis3lv02d.h"
+#include "../../misc/lis3lv02d/lis3lv02d.h"
 
-#define DRIVER_NAME     "lis3lv02d"
+#define DRIVER_NAME     "hp_accel"
 #define ACPI_MDPS_CLASS "accelerometer"
 
 /* Delayed LEDs infrastructure ------------------------------------ */
diff --git a/include/linux/i2c/ads1015.h b/include/linux/i2c/ads1015.h
new file mode 100644
index 000000000000..8541c6acfafd
--- /dev/null
+++ b/include/linux/i2c/ads1015.h
@@ -0,0 +1,28 @@
+/*
+ * Platform Data for ADS1015 12-bit 4-input ADC
+ * (C) Copyright 2010
+ * Dirk Eibach, Guntermann & Drunck GmbH <eibach@gdsys.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef LINUX_ADS1015_H
+#define LINUX_ADS1015_H
+
+struct ads1015_platform_data {
+	unsigned int exported_channels;
+};
+
+#endif /* LINUX_ADS1015_H */