1 files changed, 24 insertions, 249 deletions

diff --git a/drivers/hwmon/lis3lv02d.c b/drivers/hwmon/lis3lv02d.c
index c002144c76bc..219d2d0d5a62 100644
--- a/drivers/hwmon/lis3lv02d.c
+++ b/drivers/hwmon/lis3lv02d.c
@@ -3,6 +3,7 @@
  *
  *  Copyright (C) 2007-2008 Yan Burman
  *  Copyright (C) 2008 Eric Piel
+ *  Copyright (C) 2008 Pavel Machek
  *
  *  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
@@ -39,7 +40,6 @@
 #include "lis3lv02d.h"
 
 #define DRIVER_NAME     "lis3lv02d"
-#define ACPI_MDPS_CLASS "accelerometer"
 
 /* joystick device poll interval in milliseconds */
 #define MDPS_POLL_INTERVAL 50
@@ -55,100 +55,17 @@
 /* Maximum value our axis may get for the input device (signed 12 bits) */
 #define MDPS_MAX_VAL 2048
 
-struct axis_conversion {
-        s8      x;
-        s8      y;
-        s8      z;
-};
-
-struct acpi_lis3lv02d {
-        struct acpi_device      *device;   /* The ACPI device */
-        struct input_dev        *idev;     /* input device */
-        struct task_struct      *kthread;  /* kthread for input */
-        struct mutex            lock;
-        struct platform_device  *pdev;     /* platform device */
-        atomic_t                count;     /* interrupt count after last read */
-        int                     xcalib;    /* calibrated null value for x */
-        int                     ycalib;    /* calibrated null value for y */
-        int                     zcalib;    /* calibrated null value for z */
-        unsigned char           is_on;     /* whether the device is on or off */
-        unsigned char           usage;     /* usage counter */
-        struct axis_conversion  ac;        /* hw -> logical axis */
-};
+struct acpi_lis3lv02d adev;
+EXPORT_SYMBOL_GPL(adev);
 
-static struct acpi_lis3lv02d adev;
-
-static int lis3lv02d_remove_fs(void);
 static int lis3lv02d_add_fs(struct acpi_device *device);
 
-/* For automatic insertion of the module */
-static struct acpi_device_id lis3lv02d_device_ids[] = {
-        {"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */
-        {"", 0},
-};
-MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids);
-
-/**
- * lis3lv02d_acpi_init - ACPI _INI method: initialize the device.
- * @handle: the handle of the device
- *
- * Returns AE_OK on success.
- */
-static inline acpi_status lis3lv02d_acpi_init(acpi_handle handle)
-{
-        return acpi_evaluate_object(handle, METHOD_NAME__INI, NULL, NULL);
-}
-
-/**
- * lis3lv02d_acpi_read - ACPI ALRD method: read a register
- * @handle: the handle of the device
- * @reg:    the register to read
- * @ret:    result of the operation
- *
- * Returns AE_OK on success.
- */
-static acpi_status lis3lv02d_acpi_read(acpi_handle handle, int reg, u8 *ret)
-{
-        union acpi_object arg0 = { ACPI_TYPE_INTEGER };
-        struct acpi_object_list args = { 1, &arg0 };
-        unsigned long long lret;
-        acpi_status status;
-
-        arg0.integer.value = reg;
-
-        status = acpi_evaluate_integer(handle, "ALRD", &args, &lret);
-        *ret = lret;
-        return status;
-}
-
-/**
- * lis3lv02d_acpi_write - ACPI ALWR method: write to a register
- * @handle: the handle of the device
- * @reg:    the register to write to
- * @val:    the value to write
- *
- * Returns AE_OK on success.
- */
-static acpi_status lis3lv02d_acpi_write(acpi_handle handle, int reg, u8 val)
-{
-        unsigned long long ret; /* Not used when writting */
-        union acpi_object in_obj[2];
-        struct acpi_object_list args = { 2, in_obj };
-
-        in_obj[0].type          = ACPI_TYPE_INTEGER;
-        in_obj[0].integer.value = reg;
-        in_obj[1].type          = ACPI_TYPE_INTEGER;
-        in_obj[1].integer.value = val;
-
-        return acpi_evaluate_integer(handle, "ALWR", &args, &ret);
-}
-
 static s16 lis3lv02d_read_16(acpi_handle handle, int reg)
 {
         u8 lo, hi;
 
-        lis3lv02d_acpi_read(handle, reg, &lo);
-        lis3lv02d_acpi_read(handle, reg + 1, &hi);
+        adev.read(handle, reg, &lo);
+        adev.read(handle, reg + 1, &hi);
         /* In "12 bit right justified" mode, bit 6, bit 7, bit 8 = bit 5 */
         return (s16)((hi << 8) | lo);
 }
@@ -190,54 +107,31 @@ static void lis3lv02d_get_xyz(acpi_handle handle, int *x, int *y, int *z)
         *z = lis3lv02d_get_axis(adev.ac.z, position);
 }
 
-static inline void lis3lv02d_poweroff(acpi_handle handle)
+void lis3lv02d_poweroff(acpi_handle handle)
 {
         adev.is_on = 0;
         /* disable X,Y,Z axis and power down */
-        lis3lv02d_acpi_write(handle, CTRL_REG1, 0x00);
+        adev.write(handle, CTRL_REG1, 0x00);
 }
+EXPORT_SYMBOL_GPL(lis3lv02d_poweroff);
 
-static void lis3lv02d_poweron(acpi_handle handle)
+void lis3lv02d_poweron(acpi_handle handle)
 {
         u8 val;
 
         adev.is_on = 1;
-        lis3lv02d_acpi_init(handle);
-        lis3lv02d_acpi_write(handle, FF_WU_CFG, 0);
+        adev.init(handle);
+        adev.write(handle, FF_WU_CFG, 0);
         /*
          * BDU: LSB and MSB values are not updated until both have been read.
          *      So the value read will always be correct.
          * IEN: Interrupt for free-fall and DD, not for data-ready.
          */
-        lis3lv02d_acpi_read(handle, CTRL_REG2, &val);
+        adev.read(handle, CTRL_REG2, &val);
         val |= CTRL2_BDU | CTRL2_IEN;
-        lis3lv02d_acpi_write(handle, CTRL_REG2, val);
-}
-
-#ifdef CONFIG_PM
-static int lis3lv02d_suspend(struct acpi_device *device, pm_message_t state)
-{
-        /* make sure the device is off when we suspend */
-        lis3lv02d_poweroff(device->handle);
-        return 0;
-}
-
-static int lis3lv02d_resume(struct acpi_device *device)
-{
-        /* put back the device in the right state (ACPI might turn it on) */
-        mutex_lock(&adev.lock);
-        if (adev.usage > 0)
-                lis3lv02d_poweron(device->handle);
-        else
-                lis3lv02d_poweroff(device->handle);
-        mutex_unlock(&adev.lock);
-        return 0;
+        adev.write(handle, CTRL_REG2, val);
 }
-#else
-#define lis3lv02d_suspend NULL
-#define lis3lv02d_resume NULL
-#endif
-
+EXPORT_SYMBOL_GPL(lis3lv02d_poweron);
 
 /*
  * To be called before starting to use the device. It makes sure that the
@@ -315,7 +209,7 @@ static inline void lis3lv02d_calibrate_joystick(void)
         lis3lv02d_get_xyz(adev.device->handle, &adev.xcalib, &adev.ycalib, &adev.zcalib);
 }
 
-static int lis3lv02d_joystick_enable(void)
+int lis3lv02d_joystick_enable(void)
 {
         int err;
 
@@ -349,8 +243,9 @@ static int lis3lv02d_joystick_enable(void)
 
         return err;
 }
+EXPORT_SYMBOL_GPL(lis3lv02d_joystick_enable);
 
-static void lis3lv02d_joystick_disable(void)
+void lis3lv02d_joystick_disable(void)
 {
         if (!adev.idev)
                 return;
@@ -358,13 +253,13 @@ static void lis3lv02d_joystick_disable(void)
         input_unregister_device(adev.idev);
         adev.idev = NULL;
 }
-
+EXPORT_SYMBOL_GPL(lis3lv02d_joystick_disable);
 
 /*
  * Initialise the accelerometer and the various subsystems.
  * Should be rather independant of the bus system.
  */
-static int lis3lv02d_init_device(struct acpi_lis3lv02d *dev)
+int lis3lv02d_init_device(struct acpi_lis3lv02d *dev)
 {
         mutex_init(&dev->lock);
         lis3lv02d_add_fs(dev->device);
@@ -376,93 +271,7 @@ static int lis3lv02d_init_device(struct acpi_lis3lv02d *dev)
         lis3lv02d_decrease_use(dev);
         return 0;
 }
-
-static int lis3lv02d_dmi_matched(const struct dmi_system_id *dmi)
-{
-        adev.ac = *((struct axis_conversion *)dmi->driver_data);
-        printk(KERN_INFO DRIVER_NAME ": hardware type %s found.\n", dmi->ident);
-
-        return 1;
-}
-
-/* Represents, for each axis seen by userspace, the corresponding hw axis (+1).
- * If the value is negative, the opposite of the hw value is used. */
-static struct axis_conversion lis3lv02d_axis_normal = {1, 2, 3};
-static struct axis_conversion lis3lv02d_axis_y_inverted = {1, -2, 3};
-static struct axis_conversion lis3lv02d_axis_x_inverted = {-1, 2, 3};
-static struct axis_conversion lis3lv02d_axis_z_inverted = {1, 2, -3};
-static struct axis_conversion lis3lv02d_axis_xy_rotated_left = {-2, 1, 3};
-static struct axis_conversion lis3lv02d_axis_xy_swap_inverted = {-2, -1, 3};
-
-#define AXIS_DMI_MATCH(_ident, _name, _axis) {          \
-        .ident = _ident,                                \
-        .callback = lis3lv02d_dmi_matched,              \
-        .matches = {                                    \
-                DMI_MATCH(DMI_PRODUCT_NAME, _name)      \
-        },                                              \
-        .driver_data = &lis3lv02d_axis_##_axis          \
-}
-static struct dmi_system_id lis3lv02d_dmi_ids[] = {
-        /* product names are truncated to match all kinds of a same model */
-        AXIS_DMI_MATCH("NC64x0", "HP Compaq nc64", x_inverted),
-        AXIS_DMI_MATCH("NC84x0", "HP Compaq nc84", z_inverted),
-        AXIS_DMI_MATCH("NX9420", "HP Compaq nx9420", x_inverted),
-        AXIS_DMI_MATCH("NW9440", "HP Compaq nw9440", x_inverted),
-        AXIS_DMI_MATCH("NC2510", "HP Compaq 2510", y_inverted),
-        AXIS_DMI_MATCH("NC8510", "HP Compaq 8510", xy_swap_inverted),
-        AXIS_DMI_MATCH("HP2133", "HP 2133", xy_rotated_left),
-        { NULL, }
-/* Laptop models without axis info (yet):
- * "NC651xx" "HP Compaq 651"
- * "NC671xx" "HP Compaq 671"
- * "NC6910" "HP Compaq 6910"
- * HP Compaq 8710x Notebook PC / Mobile Workstation
- * "NC2400" "HP Compaq nc2400"
- * "NX74x0" "HP Compaq nx74"
- * "NX6325" "HP Compaq nx6325"
- * "NC4400" "HP Compaq nc4400"
- */
-};
-
-static int lis3lv02d_add(struct acpi_device *device)
-{
-        u8 val;
-
-        if (!device)
-                return -EINVAL;
-
-        adev.device = device;
-        strcpy(acpi_device_name(device), DRIVER_NAME);
-        strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
-        device->driver_data = &adev;
-
-        lis3lv02d_acpi_read(device->handle, WHO_AM_I, &val);
-        if ((val != LIS3LV02DL_ID) && (val != LIS302DL_ID)) {
-                printk(KERN_ERR DRIVER_NAME
-                                ": Accelerometer chip not LIS3LV02D{L,Q}\n");
-        }
-
-        /* If possible use a "standard" axes order */
-        if (dmi_check_system(lis3lv02d_dmi_ids) == 0) {
-                printk(KERN_INFO DRIVER_NAME ": laptop model unknown, "
-                                 "using default axes configuration\n");
-                adev.ac = lis3lv02d_axis_normal;
-        }
-
-        return lis3lv02d_init_device(&adev);
-}
-
-static int lis3lv02d_remove(struct acpi_device *device, int type)
-{
-        if (!device)
-                return -EINVAL;
-
-        lis3lv02d_joystick_disable();
-        lis3lv02d_poweroff(device->handle);
-
-        return lis3lv02d_remove_fs();
-}
-
+EXPORT_SYMBOL_GPL(lis3lv02d_init_device);
 
 /* Sysfs stuff */
 static ssize_t lis3lv02d_position_show(struct device *dev,
@@ -501,7 +310,7 @@ static ssize_t lis3lv02d_rate_show(struct device *dev,
         int val;
 
         lis3lv02d_increase_use(&adev);
-        lis3lv02d_acpi_read(adev.device->handle, CTRL_REG1, &ctrl);
+        adev.read(adev.device->handle, CTRL_REG1, &ctrl);
         lis3lv02d_decrease_use(&adev);
         val = (ctrl & (CTRL1_DF0 | CTRL1_DF1)) >> 4;
         return sprintf(buf, "%d\n", lis3lv02dl_df_val[val]);
@@ -523,6 +332,7 @@ static struct attribute_group lis3lv02d_attribute_group = {
         .attrs = lis3lv02d_attributes
 };
 
+
 static int lis3lv02d_add_fs(struct acpi_device *device)
 {
         adev.pdev = platform_device_register_simple(DRIVER_NAME, -1, NULL, 0);
@@ -532,50 +342,15 @@ static int lis3lv02d_add_fs(struct acpi_device *device)
         return sysfs_create_group(&adev.pdev->dev.kobj, &lis3lv02d_attribute_group);
 }
 
-static int lis3lv02d_remove_fs(void)
+int lis3lv02d_remove_fs(void)
 {
         sysfs_remove_group(&adev.pdev->dev.kobj, &lis3lv02d_attribute_group);
         platform_device_unregister(adev.pdev);
         return 0;
 }
-
-/* For the HP MDPS aka 3D Driveguard */
-static struct acpi_driver lis3lv02d_driver = {
-        .name  = DRIVER_NAME,
-        .class = ACPI_MDPS_CLASS,
-        .ids   = lis3lv02d_device_ids,
-        .ops = {
-                .add     = lis3lv02d_add,
-                .remove  = lis3lv02d_remove,
-                .suspend = lis3lv02d_suspend,
-                .resume  = lis3lv02d_resume,
-        }
-};
-
-static int __init lis3lv02d_init_module(void)
-{
-        int ret;
-
-        if (acpi_disabled)
-                return -ENODEV;
-
-        ret = acpi_bus_register_driver(&lis3lv02d_driver);
-        if (ret < 0)
-                return ret;
-
-        printk(KERN_INFO DRIVER_NAME " driver loaded.\n");
-
-        return 0;
-}
-
-static void __exit lis3lv02d_exit_module(void)
-{
-        acpi_bus_unregister_driver(&lis3lv02d_driver);
-}
+EXPORT_SYMBOL_GPL(lis3lv02d_remove_fs);
 
 MODULE_DESCRIPTION("ST LIS3LV02Dx three-axis digital accelerometer driver");
 MODULE_AUTHOR("Yan Burman and Eric Piel");
 MODULE_LICENSE("GPL");
 
-module_init(lis3lv02d_init_module);
-module_exit(lis3lv02d_exit_module);