7 files changed, 966 insertions, 14 deletions

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 9b089dfb173e..0b591b658243 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -72,7 +72,7 @@ config ATMEL_TCLIB
 
 config ATMEL_TCB_CLKSRC
         bool "TC Block Clocksource"
-        depends on ATMEL_TCLIB && GENERIC_TIME
+        depends on ATMEL_TCLIB
         default y
         help
           Select this to get a high precision clocksource based on a
@@ -240,7 +240,7 @@ config CS5535_MFGPT_DEFAULT_IRQ
 
 config CS5535_CLOCK_EVENT_SRC
         tristate "CS5535/CS5536 high-res timer (MFGPT) events"
-        depends on GENERIC_TIME && GENERIC_CLOCKEVENTS && CS5535_MFGPT
+        depends on GENERIC_CLOCKEVENTS && CS5535_MFGPT
         help
           This driver provides a clock event source based on the MFGPT
           timer(s) in the CS5535 and CS5536 companion chips.
@@ -304,6 +304,23 @@ config SENSORS_TSL2550
           This driver can also be built as a module.  If so, the module
           will be called tsl2550.
 
+config SENSORS_BH1780
+        tristate "ROHM BH1780GLI ambient light sensor"
+        depends on I2C && SYSFS
+        help
+          If you say yes here you get support for the ROHM BH1780GLI
+          ambient light sensor.
+
+          This driver can also be built as a module.  If so, the module
+          will be called bh1780gli.
+
+config HMC6352
+        tristate "Honeywell HMC6352 compass"
+        depends on I2C
+        help
+          This driver provides support for the Honeywell HMC6352 compass,
+          providing configuration and heading data via sysfs.
+
 config EP93XX_PWM
         tristate "EP93xx PWM support"
         depends on ARCH_EP93XX
@@ -363,6 +380,16 @@ config ARM_CHARLCD
           line and the Linux version on the second line, but that's
           still useful.
 
+config BMP085
+        tristate "BMP085 digital pressure sensor"
+        depends on I2C && SYSFS
+        help
+          If you say yes here you get support for the Bosch Sensortec
+          BMP086 digital pressure sensor.
+
+          To compile this driver as a module, choose M here: the
+          module will be called bmp085.
+
 source "drivers/misc/c2port/Kconfig"
 source "drivers/misc/eeprom/Kconfig"
 source "drivers/misc/cb710/Kconfig"
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 67552d6e9327..255a80dc9d73 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -9,11 +9,13 @@ obj-$(CONFIG_AD525X_DPOT_SPI)	+= ad525x_dpot-spi.o
 obj-$(CONFIG_ATMEL_PWM)         += atmel_pwm.o
 obj-$(CONFIG_ATMEL_SSC)         += atmel-ssc.o
 obj-$(CONFIG_ATMEL_TCLIB)       += atmel_tclib.o
+obj-$(CONFIG_BMP085)            += bmp085.o
 obj-$(CONFIG_ICS932S401)        += ics932s401.o
 obj-$(CONFIG_LKDTM)             += lkdtm.o
 obj-$(CONFIG_TIFM_CORE)         += tifm_core.o
 obj-$(CONFIG_TIFM_7XX1)         += tifm_7xx1.o
 obj-$(CONFIG_PHANTOM)           += phantom.o
+obj-$(CONFIG_SENSORS_BH1780)    += bh1780gli.o
 obj-$(CONFIG_SGI_IOC4)          += ioc4.o
 obj-$(CONFIG_ENCLOSURE_SERVICES) += enclosure.o
 obj-$(CONFIG_KGDB_TESTS)        += kgdbts.o
@@ -28,6 +30,7 @@ obj-$(CONFIG_DS1682)		+= ds1682.o
 obj-$(CONFIG_TI_DAC7512)        += ti_dac7512.o
 obj-$(CONFIG_C2PORT)            += c2port/
 obj-$(CONFIG_IWMC3200TOP)      += iwmc3200top/
+obj-$(CONFIG_HMC6352)           += hmc6352.o
 obj-y                           += eeprom/
 obj-y                           += cb710/
 obj-$(CONFIG_VMWARE_BALLOON)    += vmware_balloon.o
diff --git a/drivers/misc/bh1780gli.c b/drivers/misc/bh1780gli.c
new file mode 100644
index 000000000000..714c6b487313
--- /dev/null
+++ b/drivers/misc/bh1780gli.c
@@ -0,0 +1,273 @@
+/*
+ * bh1780gli.c
+ * ROHM Ambient Light Sensor Driver
+ *
+ * Copyright (C) 2010 Texas Instruments
+ * Author: Hemanth V <hemanthv@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+
+#define BH1780_REG_CONTROL      0x80
+#define BH1780_REG_PARTID       0x8A
+#define BH1780_REG_MANFID       0x8B
+#define BH1780_REG_DLOW 0x8C
+#define BH1780_REG_DHIGH        0x8D
+
+#define BH1780_REVMASK          (0xf)
+#define BH1780_POWMASK          (0x3)
+#define BH1780_POFF             (0x0)
+#define BH1780_PON              (0x3)
+
+/* power on settling time in ms */
+#define BH1780_PON_DELAY        2
+
+struct bh1780_data {
+        struct i2c_client *client;
+        int power_state;
+        /* lock for sysfs operations */
+        struct mutex lock;
+};
+
+static int bh1780_write(struct bh1780_data *ddata, u8 reg, u8 val, char *msg)
+{
+        int ret = i2c_smbus_write_byte_data(ddata->client, reg, val);
+        if (ret < 0)
+                dev_err(&ddata->client->dev,
+                        "i2c_smbus_write_byte_data failed error %d\
+                        Register (%s)\n", ret, msg);
+        return ret;
+}
+
+static int bh1780_read(struct bh1780_data *ddata, u8 reg, char *msg)
+{
+        int ret = i2c_smbus_read_byte_data(ddata->client, reg);
+        if (ret < 0)
+                dev_err(&ddata->client->dev,
+                        "i2c_smbus_read_byte_data failed error %d\
+                         Register (%s)\n", ret, msg);
+        return ret;
+}
+
+static ssize_t bh1780_show_lux(struct device *dev,
+                                struct device_attribute *attr, char *buf)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct bh1780_data *ddata = platform_get_drvdata(pdev);
+        int lsb, msb;
+
+        lsb = bh1780_read(ddata, BH1780_REG_DLOW, "DLOW");
+        if (lsb < 0)
+                return lsb;
+
+        msb = bh1780_read(ddata, BH1780_REG_DHIGH, "DHIGH");
+        if (msb < 0)
+                return msb;
+
+        return sprintf(buf, "%d\n", (msb << 8) | lsb);
+}
+
+static ssize_t bh1780_show_power_state(struct device *dev,
+                                        struct device_attribute *attr,
+                                        char *buf)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct bh1780_data *ddata = platform_get_drvdata(pdev);
+        int state;
+
+        state = bh1780_read(ddata, BH1780_REG_CONTROL, "CONTROL");
+        if (state < 0)
+                return state;
+
+        return sprintf(buf, "%d\n", state & BH1780_POWMASK);
+}
+
+static ssize_t bh1780_store_power_state(struct device *dev,
+                                        struct device_attribute *attr,
+                                        const char *buf, size_t count)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct bh1780_data *ddata = platform_get_drvdata(pdev);
+        unsigned long val;
+        int error;
+
+        error = strict_strtoul(buf, 0, &val);
+        if (error)
+                return error;
+
+        if (val < BH1780_POFF || val > BH1780_PON)
+                return -EINVAL;
+
+        mutex_lock(&ddata->lock);
+
+        error = bh1780_write(ddata, BH1780_REG_CONTROL, val, "CONTROL");
+        if (error < 0) {
+                mutex_unlock(&ddata->lock);
+                return error;
+        }
+
+        msleep(BH1780_PON_DELAY);
+        ddata->power_state = val;
+        mutex_unlock(&ddata->lock);
+
+        return count;
+}
+
+static DEVICE_ATTR(lux, S_IRUGO, bh1780_show_lux, NULL);
+
+static DEVICE_ATTR(power_state, S_IWUSR | S_IRUGO,
+                bh1780_show_power_state, bh1780_store_power_state);
+
+static struct attribute *bh1780_attributes[] = {
+        &dev_attr_power_state.attr,
+        &dev_attr_lux.attr,
+        NULL
+};
+
+static const struct attribute_group bh1780_attr_group = {
+        .attrs = bh1780_attributes,
+};
+
+static int __devinit bh1780_probe(struct i2c_client *client,
+                                                const struct i2c_device_id *id)
+{
+        int ret;
+        struct bh1780_data *ddata = NULL;
+        struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+
+        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE)) {
+                ret = -EIO;
+                goto err_op_failed;
+        }
+
+        ddata = kzalloc(sizeof(struct bh1780_data), GFP_KERNEL);
+        if (ddata == NULL) {
+                ret = -ENOMEM;
+                goto err_op_failed;
+        }
+
+        ddata->client = client;
+        i2c_set_clientdata(client, ddata);
+
+        ret = bh1780_read(ddata, BH1780_REG_PARTID, "PART ID");
+        if (ret < 0)
+                goto err_op_failed;
+
+        dev_info(&client->dev, "Ambient Light Sensor, Rev : %d\n",
+                        (ret & BH1780_REVMASK));
+
+        mutex_init(&ddata->lock);
+
+        ret = sysfs_create_group(&client->dev.kobj, &bh1780_attr_group);
+        if (ret)
+                goto err_op_failed;
+
+        return 0;
+
+err_op_failed:
+        kfree(ddata);
+        return ret;
+}
+
+static int __devexit bh1780_remove(struct i2c_client *client)
+{
+        struct bh1780_data *ddata;
+
+        ddata = i2c_get_clientdata(client);
+        sysfs_remove_group(&client->dev.kobj, &bh1780_attr_group);
+        i2c_set_clientdata(client, NULL);
+        kfree(ddata);
+
+        return 0;
+}
+
+#ifdef CONFIG_PM
+static int bh1780_suspend(struct i2c_client *client, pm_message_t mesg)
+{
+        struct bh1780_data *ddata;
+        int state, ret;
+
+        ddata = i2c_get_clientdata(client);
+        state = bh1780_read(ddata, BH1780_REG_CONTROL, "CONTROL");
+        if (state < 0)
+                return state;
+
+        ddata->power_state = state & BH1780_POWMASK;
+
+        ret = bh1780_write(ddata, BH1780_REG_CONTROL, BH1780_POFF,
+                                "CONTROL");
+
+        if (ret < 0)
+                return ret;
+
+        return 0;
+}
+
+static int bh1780_resume(struct i2c_client *client)
+{
+        struct bh1780_data *ddata;
+        int state, ret;
+
+        ddata = i2c_get_clientdata(client);
+        state = ddata->power_state;
+
+        ret = bh1780_write(ddata, BH1780_REG_CONTROL, state,
+                                "CONTROL");
+
+        if (ret < 0)
+                return ret;
+
+        return 0;
+}
+#else
+#define bh1780_suspend NULL
+#define bh1780_resume NULL
+#endif /* CONFIG_PM */
+
+static const struct i2c_device_id bh1780_id[] = {
+        { "bh1780", 0 },
+        { },
+};
+
+static struct i2c_driver bh1780_driver = {
+        .probe          = bh1780_probe,
+        .remove         = bh1780_remove,
+        .id_table       = bh1780_id,
+        .suspend        = bh1780_suspend,
+        .resume         = bh1780_resume,
+        .driver = {
+                .name = "bh1780"
+        },
+};
+
+static int __init bh1780_init(void)
+{
+        return i2c_add_driver(&bh1780_driver);
+}
+
+static void __exit bh1780_exit(void)
+{
+        i2c_del_driver(&bh1780_driver);
+}
+
+module_init(bh1780_init)
+module_exit(bh1780_exit)
+
+MODULE_DESCRIPTION("BH1780GLI Ambient Light Sensor Driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Hemanth V <hemanthv@ti.com>");
diff --git a/drivers/misc/bmp085.c b/drivers/misc/bmp085.c
new file mode 100644
index 000000000000..63ee4c1a5315
--- /dev/null
+++ b/drivers/misc/bmp085.c
@@ -0,0 +1,482 @@
+/*  Copyright (c) 2010  Christoph Mair <christoph.mair@gmail.com>
+
+    This driver supports the bmp085 digital barometric pressure
+    and temperature sensor from Bosch Sensortec. The datasheet
+    is avaliable from their website:
+    http://www.bosch-sensortec.com/content/language1/downloads/BST-BMP085-DS000-05.pdf
+
+    A pressure measurement is issued by reading from pressure0_input.
+    The return value ranges from 30000 to 110000 pascal with a resulution
+    of 1 pascal (0.01 millibar) which enables measurements from 9000m above
+    to 500m below sea level.
+
+    The temperature can be read from temp0_input. Values range from
+    -400 to 850 representing the ambient temperature in degree celsius
+    multiplied by 10.The resolution is 0.1 celsius.
+
+    Because ambient pressure is temperature dependent, a temperature
+    measurement will be executed automatically even if the user is reading
+    from pressure0_input. This happens if the last temperature measurement
+    has been executed more then one second ago.
+
+    To decrease RMS noise from pressure measurements, the bmp085 can
+    autonomously calculate the average of up to eight samples. This is
+    set up by writing to the oversampling sysfs file. Accepted values
+    are 0, 1, 2 and 3. 2^x when x is the value written to this file
+    specifies the number of samples used to calculate the ambient pressure.
+    RMS noise is specified with six pascal (without averaging) and decreases
+    down to 3 pascal when using an oversampling setting of 3.
+
+    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/i2c.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+
+
+#define BMP085_I2C_ADDRESS              0x77
+#define BMP085_CHIP_ID                  0x55
+
+#define BMP085_CALIBRATION_DATA_START   0xAA
+#define BMP085_CALIBRATION_DATA_LENGTH  11      /* 16 bit values */
+#define BMP085_CHIP_ID_REG              0xD0
+#define BMP085_VERSION_REG              0xD1
+#define BMP085_CTRL_REG                 0xF4
+#define BMP085_TEMP_MEASUREMENT         0x2E
+#define BMP085_PRESSURE_MEASUREMENT     0x34
+#define BMP085_CONVERSION_REGISTER_MSB  0xF6
+#define BMP085_CONVERSION_REGISTER_LSB  0xF7
+#define BMP085_CONVERSION_REGISTER_XLSB 0xF8
+#define BMP085_TEMP_CONVERSION_TIME     5
+
+#define BMP085_CLIENT_NAME              "bmp085"
+
+
+static const unsigned short normal_i2c[] = { BMP085_I2C_ADDRESS,
+                                                        I2C_CLIENT_END };
+
+struct bmp085_calibration_data {
+        s16 AC1, AC2, AC3;
+        u16 AC4, AC5, AC6;
+        s16 B1, B2;
+        s16 MB, MC, MD;
+};
+
+
+/* Each client has this additional data */
+struct bmp085_data {
+        struct i2c_client *client;
+        struct mutex lock;
+        struct bmp085_calibration_data calibration;
+        u32 raw_temperature;
+        u32 raw_pressure;
+        unsigned char oversampling_setting;
+        u32 last_temp_measurement;
+        s32 b6; /* calculated temperature correction coefficient */
+};
+
+
+static s32 bmp085_read_calibration_data(struct i2c_client *client)
+{
+        u16 tmp[BMP085_CALIBRATION_DATA_LENGTH];
+        struct bmp085_data *data = i2c_get_clientdata(client);
+        struct bmp085_calibration_data *cali = &(data->calibration);
+        s32 status = i2c_smbus_read_i2c_block_data(client,
+                                BMP085_CALIBRATION_DATA_START,
+                                BMP085_CALIBRATION_DATA_LENGTH*sizeof(u16),
+                                (u8 *)tmp);
+        if (status < 0)
+                return status;
+
+        if (status != BMP085_CALIBRATION_DATA_LENGTH*sizeof(u16))
+                return -EIO;
+
+        cali->AC1 =  be16_to_cpu(tmp[0]);
+        cali->AC2 =  be16_to_cpu(tmp[1]);
+        cali->AC3 =  be16_to_cpu(tmp[2]);
+        cali->AC4 =  be16_to_cpu(tmp[3]);
+        cali->AC5 =  be16_to_cpu(tmp[4]);
+        cali->AC6 = be16_to_cpu(tmp[5]);
+        cali->B1 = be16_to_cpu(tmp[6]);
+        cali->B2 = be16_to_cpu(tmp[7]);
+        cali->MB = be16_to_cpu(tmp[8]);
+        cali->MC = be16_to_cpu(tmp[9]);
+        cali->MD = be16_to_cpu(tmp[10]);
+        return 0;
+}
+
+
+static s32 bmp085_update_raw_temperature(struct bmp085_data *data)
+{
+        u16 tmp;
+        s32 status;
+
+        mutex_lock(&data->lock);
+        status = i2c_smbus_write_byte_data(data->client, BMP085_CTRL_REG,
+                                                BMP085_TEMP_MEASUREMENT);
+        if (status != 0) {
+                dev_err(&data->client->dev,
+                        "Error while requesting temperature measurement.\n");
+                goto exit;
+        }
+        msleep(BMP085_TEMP_CONVERSION_TIME);
+
+        status = i2c_smbus_read_i2c_block_data(data->client,
+                BMP085_CONVERSION_REGISTER_MSB, sizeof(tmp), (u8 *)&tmp);
+        if (status < 0)
+                goto exit;
+        if (status != sizeof(tmp)) {
+                dev_err(&data->client->dev,
+                        "Error while reading temperature measurement result\n");
+                status = -EIO;
+                goto exit;
+        }
+        data->raw_temperature = be16_to_cpu(tmp);
+        data->last_temp_measurement = jiffies;
+        status = 0;     /* everything ok, return 0 */
+
+exit:
+        mutex_unlock(&data->lock);
+        return status;
+}
+
+static s32 bmp085_update_raw_pressure(struct bmp085_data *data)
+{
+        u32 tmp = 0;
+        s32 status;
+
+        mutex_lock(&data->lock);
+        status = i2c_smbus_write_byte_data(data->client, BMP085_CTRL_REG,
+                BMP085_PRESSURE_MEASUREMENT + (data->oversampling_setting<<6));
+        if (status != 0) {
+                dev_err(&data->client->dev,
+                        "Error while requesting pressure measurement.\n");
+                goto exit;
+        }
+
+        /* wait for the end of conversion */
+        msleep(2+(3 << data->oversampling_setting));
+
+        /* copy data into a u32 (4 bytes), but skip the first byte. */
+        status = i2c_smbus_read_i2c_block_data(data->client,
+                        BMP085_CONVERSION_REGISTER_MSB, 3, ((u8 *)&tmp)+1);
+        if (status < 0)
+                goto exit;
+        if (status != 3) {
+                dev_err(&data->client->dev,
+                        "Error while reading pressure measurement results\n");
+                status = -EIO;
+                goto exit;
+        }
+        data->raw_pressure = be32_to_cpu((tmp));
+        data->raw_pressure >>= (8-data->oversampling_setting);
+        status = 0;     /* everything ok, return 0 */
+
+exit:
+        mutex_unlock(&data->lock);
+        return status;
+}
+
+
+/*
+ * This function starts the temperature measurement and returns the value
+ * in tenth of a degree celsius.
+ */
+static s32 bmp085_get_temperature(struct bmp085_data *data, int *temperature)
+{
+        struct bmp085_calibration_data *cali = &data->calibration;
+        long x1, x2;
+        int status;
+
+        status = bmp085_update_raw_temperature(data);
+        if (status != 0)
+                goto exit;
+
+        x1 = ((data->raw_temperature - cali->AC6) * cali->AC5) >> 15;
+        x2 = (cali->MC << 11) / (x1 + cali->MD);
+        data->b6 = x1 + x2 - 4000;
+        /* if NULL just update b6. Used for pressure only measurements */
+        if (temperature != NULL)
+                *temperature = (x1+x2+8) >> 4;
+
+exit:
+        return status;;
+}
+
+/*
+ * This function starts the pressure measurement and returns the value
+ * in millibar. Since the pressure depends on the ambient temperature,
+ * a temperature measurement is executed if the last known value is older
+ * than one second.
+ */
+static s32 bmp085_get_pressure(struct bmp085_data *data, int *pressure)
+{
+        struct bmp085_calibration_data *cali = &data->calibration;
+        s32 x1, x2, x3, b3;
+        u32 b4, b7;
+        s32 p;
+        int status;
+
+        /* alt least every second force an update of the ambient temperature */
+        if (data->last_temp_measurement + 1*HZ < jiffies) {
+                status = bmp085_get_temperature(data, NULL);
+                if (status != 0)
+                        goto exit;
+        }
+
+        status = bmp085_update_raw_pressure(data);
+        if (status != 0)
+                goto exit;
+
+        x1 = (data->b6 * data->b6) >> 12;
+        x1 *= cali->B2;
+        x1 >>= 11;
+
+        x2 = cali->AC2 * data->b6;
+        x2 >>= 11;
+
+        x3 = x1 + x2;
+
+        b3 = (((((s32)cali->AC1) * 4 + x3) << data->oversampling_setting) + 2);
+        b3 >>= 2;
+
+        x1 = (cali->AC3 * data->b6) >> 13;
+        x2 = (cali->B1 * ((data->b6 * data->b6) >> 12)) >> 16;
+        x3 = (x1 + x2 + 2) >> 2;
+        b4 = (cali->AC4 * (u32)(x3 + 32768)) >> 15;
+
+        b7 = ((u32)data->raw_pressure - b3) *
+                                        (50000 >> data->oversampling_setting);
+        p = ((b7 < 0x80000000) ? ((b7 << 1) / b4) : ((b7 / b4) * 2));
+
+        x1 = p >> 8;
+        x1 *= x1;
+        x1 = (x1 * 3038) >> 16;
+        x2 = (-7357 * p) >> 16;
+        p += (x1 + x2 + 3791) >> 4;
+
+        *pressure = p;
+
+exit:
+        return status;
+}
+
+/*
+ * This function sets the chip-internal oversampling. Valid values are 0..3.
+ * The chip will use 2^oversampling samples for internal averaging.
+ * This influences the measurement time and the accuracy; larger values
+ * increase both. The datasheet gives on overview on how measurement time,
+ * accuracy and noise correlate.
+ */
+static void bmp085_set_oversampling(struct bmp085_data *data,
+                                                unsigned char oversampling)
+{
+        if (oversampling > 3)
+                oversampling = 3;
+        data->oversampling_setting = oversampling;
+}
+
+/*
+ * Returns the currently selected oversampling. Range: 0..3
+ */
+static unsigned char bmp085_get_oversampling(struct bmp085_data *data)
+{
+        return data->oversampling_setting;
+}
+
+/* sysfs callbacks */
+static ssize_t set_oversampling(struct device *dev,
+                                struct device_attribute *attr,
+                                const char *buf, size_t count)
+{
+        struct i2c_client *client = to_i2c_client(dev);
+        struct bmp085_data *data = i2c_get_clientdata(client);
+        unsigned long oversampling;
+        int success = strict_strtoul(buf, 10, &oversampling);
+        if (success == 0) {
+                bmp085_set_oversampling(data, oversampling);
+                return count;
+        }
+        return success;
+}
+
+static ssize_t show_oversampling(struct device *dev,
+                                 struct device_attribute *attr, char *buf)
+{
+        struct i2c_client *client = to_i2c_client(dev);
+        struct bmp085_data *data = i2c_get_clientdata(client);
+        return sprintf(buf, "%u\n", bmp085_get_oversampling(data));
+}
+static DEVICE_ATTR(oversampling, S_IWUSR | S_IRUGO,
+                                        show_oversampling, set_oversampling);
+
+
+static ssize_t show_temperature(struct device *dev,
+                                struct device_attribute *attr, char *buf)
+{
+        int temperature;
+        int status;
+        struct i2c_client *client = to_i2c_client(dev);
+        struct bmp085_data *data = i2c_get_clientdata(client);
+
+        status = bmp085_get_temperature(data, &temperature);
+        if (status != 0)
+                return status;
+        else
+                return sprintf(buf, "%d\n", temperature);
+}
+static DEVICE_ATTR(temp0_input, S_IRUGO, show_temperature, NULL);
+
+
+static ssize_t show_pressure(struct device *dev,
+                             struct device_attribute *attr, char *buf)
+{
+        int pressure;
+        int status;
+        struct i2c_client *client = to_i2c_client(dev);
+        struct bmp085_data *data = i2c_get_clientdata(client);
+
+        status = bmp085_get_pressure(data, &pressure);
+        if (status != 0)
+                return status;
+        else
+                return sprintf(buf, "%d\n", pressure);
+}
+static DEVICE_ATTR(pressure0_input, S_IRUGO, show_pressure, NULL);
+
+
+static struct attribute *bmp085_attributes[] = {
+        &dev_attr_temp0_input.attr,
+        &dev_attr_pressure0_input.attr,
+        &dev_attr_oversampling.attr,
+        NULL
+};
+
+static const struct attribute_group bmp085_attr_group = {
+        .attrs = bmp085_attributes,
+};
+
+static int bmp085_detect(struct i2c_client *client, struct i2c_board_info *info)
+{
+        if (client->addr != BMP085_I2C_ADDRESS)
+                return -ENODEV;
+
+        if (i2c_smbus_read_byte_data(client, BMP085_CHIP_ID_REG) != BMP085_CHIP_ID)
+                return -ENODEV;
+
+        return 0;
+}
+
+static int bmp085_init_client(struct i2c_client *client)
+{
+        unsigned char version;
+        int status;
+        struct bmp085_data *data = i2c_get_clientdata(client);
+        data->client = client;
+        status = bmp085_read_calibration_data(client);
+        if (status != 0)
+                goto exit;
+        version = i2c_smbus_read_byte_data(client, BMP085_VERSION_REG);
+        data->last_temp_measurement = 0;
+        data->oversampling_setting = 3;
+        mutex_init(&data->lock);
+        dev_info(&data->client->dev, "BMP085 ver. %d.%d found.\n",
+                        (version & 0x0F), (version & 0xF0) >> 4);
+exit:
+        return status;
+}
+
+static int bmp085_probe(struct i2c_client *client,
+                         const struct i2c_device_id *id)
+{
+        struct bmp085_data *data;
+        int err = 0;
+
+        data = kzalloc(sizeof(struct bmp085_data), GFP_KERNEL);
+        if (!data) {
+                err = -ENOMEM;
+                goto exit;
+        }
+
+        /* default settings after POR */
+        data->oversampling_setting = 0x00;
+
+        i2c_set_clientdata(client, data);
+
+        /* Initialize the BMP085 chip */
+        err = bmp085_init_client(client);
+        if (err != 0)
+                goto exit_free;
+
+        /* Register sysfs hooks */
+        err = sysfs_create_group(&client->dev.kobj, &bmp085_attr_group);
+        if (err)
+                goto exit_free;
+
+        dev_info(&data->client->dev, "Succesfully initialized bmp085!\n");
+        goto exit;
+
+exit_free:
+        kfree(data);
+exit:
+        return err;
+}
+
+static int bmp085_remove(struct i2c_client *client)
+{
+        sysfs_remove_group(&client->dev.kobj, &bmp085_attr_group);
+        kfree(i2c_get_clientdata(client));
+        return 0;
+}
+
+static const struct i2c_device_id bmp085_id[] = {
+        { "bmp085", 0 },
+        { }
+};
+
+static struct i2c_driver bmp085_driver = {
+        .driver = {
+                .owner = THIS_MODULE,
+                .name   = "bmp085"
+        },
+        .id_table       = bmp085_id,
+        .probe          = bmp085_probe,
+        .remove         = bmp085_remove,
+
+        .detect         = bmp085_detect,
+        .address_list   = normal_i2c
+};
+
+static int __init bmp085_init(void)
+{
+        return i2c_add_driver(&bmp085_driver);
+}
+
+static void __exit bmp085_exit(void)
+{
+        i2c_del_driver(&bmp085_driver);
+}
+
+
+MODULE_AUTHOR("Christoph Mair <christoph.mair@gmail.com");
+MODULE_DESCRIPTION("BMP085 driver");
+MODULE_LICENSE("GPL");
+
+module_init(bmp085_init);
+module_exit(bmp085_exit);
diff --git a/drivers/misc/hmc6352.c b/drivers/misc/hmc6352.c
new file mode 100644
index 000000000000..234bfcaf2099
--- /dev/null
+++ b/drivers/misc/hmc6352.c
@@ -0,0 +1,166 @@
+/*
+ * hmc6352.c - Honeywell Compass Driver
+ *
+ * Copyright (C) 2009 Intel Corp
+ *
+ *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <linux/sysfs.h>
+
+static DEFINE_MUTEX(compass_mutex);
+
+static int compass_command(struct i2c_client *c, u8 cmd)
+{
+        int ret = i2c_master_send(c, &cmd, 1);
+        if (ret < 0)
+                dev_warn(&c->dev, "command '%c' failed.\n", cmd);
+        return ret;
+}
+
+static int compass_store(struct device *dev, const char *buf, size_t count,
+                        const char *map)
+{
+        struct i2c_client *c = to_i2c_client(dev);
+        int ret;
+        unsigned long val;
+
+        if (strict_strtoul(buf, 10, &val))
+                return -EINVAL;
+        if (val >= strlen(map))
+                return -EINVAL;
+        mutex_lock(&compass_mutex);
+        ret = compass_command(c, map[val]);
+        mutex_unlock(&compass_mutex);
+        if (ret < 0)
+                return ret;
+        return count;
+}
+
+static ssize_t compass_calibration_store(struct device *dev,
+                struct device_attribute *attr, const char *buf, size_t count)
+{
+        return compass_store(dev, buf, count, "EC");
+}
+
+static ssize_t compass_power_mode_store(struct device *dev,
+                struct device_attribute *attr, const  char *buf, size_t count)
+{
+        return compass_store(dev, buf, count, "SW");
+}
+
+static ssize_t compass_heading_data_show(struct device *dev,
+                        struct device_attribute *attr, char *buf)
+{
+        struct i2c_client *client = to_i2c_client(dev);
+        unsigned char i2c_data[2];
+        unsigned int ret;
+
+        mutex_lock(&compass_mutex);
+        ret = compass_command(client, 'A');
+        if (ret != 1) {
+                mutex_unlock(&compass_mutex);
+                return ret;
+        }
+        msleep(10); /* sending 'A' cmd we need to wait for 7-10 millisecs */
+        ret = i2c_master_recv(client, i2c_data, 2);
+        mutex_unlock(&compass_mutex);
+        if (ret != 1) {
+                dev_warn(dev, "i2c read data cmd failed\n");
+                return ret;
+        }
+        ret = (i2c_data[0] << 8) | i2c_data[1];
+        return sprintf(buf, "%d.%d\n", ret/10, ret%10);
+}
+
+
+static DEVICE_ATTR(heading0_input, S_IRUGO, compass_heading_data_show, NULL);
+static DEVICE_ATTR(calibration, S_IWUSR, NULL, compass_calibration_store);
+static DEVICE_ATTR(power_state, S_IWUSR, NULL, compass_power_mode_store);
+
+static struct attribute *mid_att_compass[] = {
+        &dev_attr_heading0_input.attr,
+        &dev_attr_calibration.attr,
+        &dev_attr_power_state.attr,
+        NULL
+};
+
+static const struct attribute_group m_compass_gr = {
+        .name = "hmc6352",
+        .attrs = mid_att_compass
+};
+
+static int hmc6352_probe(struct i2c_client *client,
+                                        const struct i2c_device_id *id)
+{
+        int res;
+
+        res = sysfs_create_group(&client->dev.kobj, &m_compass_gr);
+        if (res) {
+                dev_err(&client->dev, "device_create_file failed\n");
+                return res;
+        }
+        dev_info(&client->dev, "%s HMC6352 compass chip found\n",
+                                                        client->name);
+        return 0;
+}
+
+static int hmc6352_remove(struct i2c_client *client)
+{
+        sysfs_remove_group(&client->dev.kobj, &m_compass_gr);
+        return 0;
+}
+
+static struct i2c_device_id hmc6352_id[] = {
+        { "hmc6352", 0 },
+        { }
+};
+
+MODULE_DEVICE_TABLE(i2c, hmc6352_id);
+
+static struct i2c_driver hmc6352_driver = {
+        .driver = {
+                .name = "hmc6352",
+        },
+        .probe = hmc6352_probe,
+        .remove = hmc6352_remove,
+        .id_table = hmc6352_id,
+};
+
+static int __init sensor_hmc6352_init(void)
+{
+        return i2c_add_driver(&hmc6352_driver);
+}
+
+static void  __exit sensor_hmc6352_exit(void)
+{
+        i2c_del_driver(&hmc6352_driver);
+}
+
+module_init(sensor_hmc6352_init);
+module_exit(sensor_hmc6352_exit);
+
+MODULE_AUTHOR("Kalhan Trisal <kalhan.trisal@intel.com");
+MODULE_DESCRIPTION("hmc6352 Compass Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/misc/hpilo.c b/drivers/misc/hpilo.c
index 98ad0120aa9b..557a8c2a7336 100644
--- a/drivers/misc/hpilo.c
+++ b/drivers/misc/hpilo.c
@@ -256,7 +256,8 @@ static void ilo_ccb_close(struct pci_dev *pdev, struct ccb_data *data)
 
 static int ilo_ccb_setup(struct ilo_hwinfo *hw, struct ccb_data *data, int slot)
 {
-        char *dma_va, *dma_pa;
+        char *dma_va;
+        dma_addr_t dma_pa;
         struct ccb *driver_ccb, *ilo_ccb;
 
         driver_ccb = &data->driver_ccb;
@@ -272,12 +273,12 @@ static int ilo_ccb_setup(struct ilo_hwinfo *hw, struct ccb_data *data, int slot)
                 return -ENOMEM;
 
         dma_va = (char *)data->dma_va;
-        dma_pa = (char *)data->dma_pa;
+        dma_pa = data->dma_pa;
 
         memset(dma_va, 0, data->dma_size);
 
         dma_va = (char *)roundup((unsigned long)dma_va, ILO_START_ALIGN);
-        dma_pa = (char *)roundup((unsigned long)dma_pa, ILO_START_ALIGN);
+        dma_pa = roundup(dma_pa, ILO_START_ALIGN);
 
         /*
          * Create two ccb's, one with virt addrs, one with phys addrs.
@@ -288,26 +289,26 @@ static int ilo_ccb_setup(struct ilo_hwinfo *hw, struct ccb_data *data, int slot)
 
         fifo_setup(dma_va, NR_QENTRY);
         driver_ccb->ccb_u1.send_fifobar = dma_va + FIFOHANDLESIZE;
-        ilo_ccb->ccb_u1.send_fifobar = dma_pa + FIFOHANDLESIZE;
+        ilo_ccb->ccb_u1.send_fifobar_pa = dma_pa + FIFOHANDLESIZE;
         dma_va += fifo_sz(NR_QENTRY);
         dma_pa += fifo_sz(NR_QENTRY);
 
         dma_va = (char *)roundup((unsigned long)dma_va, ILO_CACHE_SZ);
-        dma_pa = (char *)roundup((unsigned long)dma_pa, ILO_CACHE_SZ);
+        dma_pa = roundup(dma_pa, ILO_CACHE_SZ);
 
         fifo_setup(dma_va, NR_QENTRY);
         driver_ccb->ccb_u3.recv_fifobar = dma_va + FIFOHANDLESIZE;
-        ilo_ccb->ccb_u3.recv_fifobar = dma_pa + FIFOHANDLESIZE;
+        ilo_ccb->ccb_u3.recv_fifobar_pa = dma_pa + FIFOHANDLESIZE;
         dma_va += fifo_sz(NR_QENTRY);
         dma_pa += fifo_sz(NR_QENTRY);
 
         driver_ccb->ccb_u2.send_desc = dma_va;
-        ilo_ccb->ccb_u2.send_desc = dma_pa;
+        ilo_ccb->ccb_u2.send_desc_pa = dma_pa;
         dma_pa += desc_mem_sz(NR_QENTRY);
         dma_va += desc_mem_sz(NR_QENTRY);
 
         driver_ccb->ccb_u4.recv_desc = dma_va;
-        ilo_ccb->ccb_u4.recv_desc = dma_pa;
+        ilo_ccb->ccb_u4.recv_desc_pa = dma_pa;
 
         driver_ccb->channel = slot;
         ilo_ccb->channel = slot;
diff --git a/drivers/misc/hpilo.h b/drivers/misc/hpilo.h
index 247eb386a973..54e43adbdea1 100644
--- a/drivers/misc/hpilo.h
+++ b/drivers/misc/hpilo.h
@@ -79,21 +79,21 @@ struct ilo_hwinfo {
 struct ccb {
         union {
                 char *send_fifobar;
-                u64 padding1;
+                u64 send_fifobar_pa;
         } ccb_u1;
         union {
                 char *send_desc;
-                u64 padding2;
+                u64 send_desc_pa;
         } ccb_u2;
         u64 send_ctrl;
 
         union {
                 char *recv_fifobar;
-                u64 padding3;
+                u64 recv_fifobar_pa;
         } ccb_u3;
         union {
                 char *recv_desc;
-                u64 padding4;
+                u64 recv_desc_pa;
         } ccb_u4;
         u64 recv_ctrl;