1 files changed, 91 insertions, 81 deletions

diff --git a/drivers/hwmon/lis3lv02d.c b/drivers/hwmon/lis3lv02d.c
index 8bb2158f0453..4888ac5ba8cc 100644
--- a/drivers/hwmon/lis3lv02d.c
+++ b/drivers/hwmon/lis3lv02d.c
@@ -53,14 +53,24 @@
  * joystick.
  */
 
-struct acpi_lis3lv02d adev = {
-        .misc_wait   = __WAIT_QUEUE_HEAD_INITIALIZER(adev.misc_wait),
+struct acpi_lis3lv02d lis3_dev = {
+        .misc_wait   = __WAIT_QUEUE_HEAD_INITIALIZER(lis3_dev.misc_wait),
 };
 
-EXPORT_SYMBOL_GPL(adev);
+EXPORT_SYMBOL_GPL(lis3_dev);
 
 static int lis3lv02d_add_fs(struct acpi_device *device);
 
+static s16 lis3lv02d_read_16(acpi_handle handle, int reg)
+{
+        u8 lo, hi;
+
+        lis3_dev.read(handle, reg, &lo);
+        lis3_dev.read(handle, reg + 1, &hi);
+        /* In "12 bit right justified" mode, bit 6, bit 7, bit 8 = bit 5 */
+        return (s16)((hi << 8) | lo);
+}
+
 /**
  * lis3lv02d_get_axis - For the given axis, give the value converted
  * @axis:      1,2,3 - can also be negative
@@ -89,25 +99,25 @@ static void lis3lv02d_get_xyz(acpi_handle handle, int *x, int *y, int *z)
 {
         int position[3];
 
-        position[0] = adev.read_data(handle, OUTX);
-        position[1] = adev.read_data(handle, OUTY);
-        position[2] = adev.read_data(handle, OUTZ);
+        position[0] = lis3_dev.read_data(handle, OUTX);
+        position[1] = lis3_dev.read_data(handle, OUTY);
+        position[2] = lis3_dev.read_data(handle, OUTZ);
 
-        *x = lis3lv02d_get_axis(adev.ac.x, position);
-        *y = lis3lv02d_get_axis(adev.ac.y, position);
-        *z = lis3lv02d_get_axis(adev.ac.z, position);
+        *x = lis3lv02d_get_axis(lis3_dev.ac.x, position);
+        *y = lis3lv02d_get_axis(lis3_dev.ac.y, position);
+        *z = lis3lv02d_get_axis(lis3_dev.ac.z, position);
 }
 
 void lis3lv02d_poweroff(acpi_handle handle)
 {
-        adev.is_on = 0;
+        lis3_dev.is_on = 0;
 }
 EXPORT_SYMBOL_GPL(lis3lv02d_poweroff);
 
 void lis3lv02d_poweron(acpi_handle handle)
 {
-        adev.is_on = 1;
-        adev.init(handle);
+        lis3_dev.is_on = 1;
+        lis3_dev.init(handle);
 }
 EXPORT_SYMBOL_GPL(lis3lv02d_poweron);
 
@@ -147,10 +157,10 @@ static irqreturn_t lis302dl_interrupt(int irq, void *dummy)
          * the lid is closed. This leads to interrupts as soon as a little move
          * is done.
          */
-        atomic_inc(&adev.count);
+        atomic_inc(&lis3_dev.count);
 
-        wake_up_interruptible(&adev.misc_wait);
-        kill_fasync(&adev.async_queue, SIGIO, POLL_IN);
+        wake_up_interruptible(&lis3_dev.misc_wait);
+        kill_fasync(&lis3_dev.async_queue, SIGIO, POLL_IN);
         return IRQ_HANDLED;
 }
 
@@ -158,10 +168,10 @@ static int lis3lv02d_misc_open(struct inode *inode, struct file *file)
 {
         int ret;
 
-        if (test_and_set_bit(0, &adev.misc_opened))
+        if (test_and_set_bit(0, &lis3_dev.misc_opened))
                 return -EBUSY; /* already open */
 
-        atomic_set(&adev.count, 0);
+        atomic_set(&lis3_dev.count, 0);
 
         /*
          * The sensor can generate interrupts for free-fall and direction
@@ -174,25 +184,25 @@ static int lis3lv02d_misc_open(struct inode *inode, struct file *file)
          * io-apic is not configurable (and generates a warning) but I keep it
          * in case of support for other hardware.
          */
-        ret = request_irq(adev.irq, lis302dl_interrupt, IRQF_TRIGGER_RISING,
-                          DRIVER_NAME, &adev);
+        ret = request_irq(lis3_dev.irq, lis302dl_interrupt, IRQF_TRIGGER_RISING,
+                          DRIVER_NAME, &lis3_dev);
 
         if (ret) {
-                clear_bit(0, &adev.misc_opened);
-                printk(KERN_ERR DRIVER_NAME ": IRQ%d allocation failed\n", adev.irq);
+                clear_bit(0, &lis3_dev.misc_opened);
+                printk(KERN_ERR DRIVER_NAME ": IRQ%d allocation failed\n", lis3_dev.irq);
                 return -EBUSY;
         }
-        lis3lv02d_increase_use(&adev);
-        printk("lis3: registered interrupt %d\n", adev.irq);
+        lis3lv02d_increase_use(&lis3_dev);
+        printk("lis3: registered interrupt %d\n", lis3_dev.irq);
         return 0;
 }
 
 static int lis3lv02d_misc_release(struct inode *inode, struct file *file)
 {
-        fasync_helper(-1, file, 0, &adev.async_queue);
-        lis3lv02d_decrease_use(&adev);
-        free_irq(adev.irq, &adev);
-        clear_bit(0, &adev.misc_opened); /* release the device */
+        fasync_helper(-1, file, 0, &lis3_dev.async_queue);
+        lis3lv02d_decrease_use(&lis3_dev);
+        free_irq(lis3_dev.irq, &lis3_dev);
+        clear_bit(0, &lis3_dev.misc_opened); /* release the device */
         return 0;
 }
 
@@ -207,10 +217,10 @@ static ssize_t lis3lv02d_misc_read(struct file *file, char __user *buf,
         if (count < 1)
                 return -EINVAL;
 
-        add_wait_queue(&adev.misc_wait, &wait);
+        add_wait_queue(&lis3_dev.misc_wait, &wait);
         while (true) {
                 set_current_state(TASK_INTERRUPTIBLE);
-                data = atomic_xchg(&adev.count, 0);
+                data = atomic_xchg(&lis3_dev.count, 0);
                 if (data)
                         break;
 
@@ -240,22 +250,22 @@ static ssize_t lis3lv02d_misc_read(struct file *file, char __user *buf,
 
 out:
         __set_current_state(TASK_RUNNING);
-        remove_wait_queue(&adev.misc_wait, &wait);
+        remove_wait_queue(&lis3_dev.misc_wait, &wait);
 
         return retval;
 }
 
 static unsigned int lis3lv02d_misc_poll(struct file *file, poll_table *wait)
 {
-        poll_wait(file, &adev.misc_wait, wait);
-        if (atomic_read(&adev.count))
+        poll_wait(file, &lis3_dev.misc_wait, wait);
+        if (atomic_read(&lis3_dev.count))
                 return POLLIN | POLLRDNORM;
         return 0;
 }
 
 static int lis3lv02d_misc_fasync(int fd, struct file *file, int on)
 {
-        return fasync_helper(fd, file, on, &adev.async_queue);
+        return fasync_helper(fd, file, on, &lis3_dev.async_queue);
 }
 
 static const struct file_operations lis3lv02d_misc_fops = {
@@ -283,12 +293,12 @@ static int lis3lv02d_joystick_kthread(void *data)
         int x, y, z;
 
         while (!kthread_should_stop()) {
-                lis3lv02d_get_xyz(adev.device->handle, &x, &y, &z);
-                input_report_abs(adev.idev, ABS_X, x - adev.xcalib);
-                input_report_abs(adev.idev, ABS_Y, y - adev.ycalib);
-                input_report_abs(adev.idev, ABS_Z, z - adev.zcalib);
+                lis3lv02d_get_xyz(lis3_dev.device->handle, &x, &y, &z);
+                input_report_abs(lis3_dev.idev, ABS_X, x - lis3_dev.xcalib);
+                input_report_abs(lis3_dev.idev, ABS_Y, y - lis3_dev.ycalib);
+                input_report_abs(lis3_dev.idev, ABS_Z, z - lis3_dev.zcalib);
 
-                input_sync(adev.idev);
+                input_sync(lis3_dev.idev);
 
                 try_to_freeze();
                 msleep_interruptible(MDPS_POLL_INTERVAL);
@@ -299,11 +309,11 @@ static int lis3lv02d_joystick_kthread(void *data)
 
 static int lis3lv02d_joystick_open(struct input_dev *input)
 {
-        lis3lv02d_increase_use(&adev);
-        adev.kthread = kthread_run(lis3lv02d_joystick_kthread, NULL, "klis3lv02d");
-        if (IS_ERR(adev.kthread)) {
-                lis3lv02d_decrease_use(&adev);
-                return PTR_ERR(adev.kthread);
+        lis3lv02d_increase_use(&lis3_dev);
+        lis3_dev.kthread = kthread_run(lis3lv02d_joystick_kthread, NULL, "klis3lv02d");
+        if (IS_ERR(lis3_dev.kthread)) {
+                lis3lv02d_decrease_use(&lis3_dev);
+                return PTR_ERR(lis3_dev.kthread);
         }
 
         return 0;
@@ -311,45 +321,45 @@ static int lis3lv02d_joystick_open(struct input_dev *input)
 
 static void lis3lv02d_joystick_close(struct input_dev *input)
 {
-        kthread_stop(adev.kthread);
-        lis3lv02d_decrease_use(&adev);
+        kthread_stop(lis3_dev.kthread);
+        lis3lv02d_decrease_use(&lis3_dev);
 }
 
 static inline void lis3lv02d_calibrate_joystick(void)
 {
-        lis3lv02d_get_xyz(adev.device->handle, &adev.xcalib, &adev.ycalib, &adev.zcalib);
+        lis3lv02d_get_xyz(lis3_dev.device->handle, &lis3_dev.xcalib, &lis3_dev.ycalib, &lis3_dev.zcalib);
 }
 
 int lis3lv02d_joystick_enable(void)
 {
         int err;
 
-        if (adev.idev)
+        if (lis3_dev.idev)
                 return -EINVAL;
 
-        adev.idev = input_allocate_device();
-        if (!adev.idev)
+        lis3_dev.idev = input_allocate_device();
+        if (!lis3_dev.idev)
                 return -ENOMEM;
 
         lis3lv02d_calibrate_joystick();
 
-        adev.idev->name       = "ST LIS3LV02DL Accelerometer";
-        adev.idev->phys       = DRIVER_NAME "/input0";
-        adev.idev->id.bustype = BUS_HOST;
-        adev.idev->id.vendor  = 0;
-        adev.idev->dev.parent = &adev.pdev->dev;
-        adev.idev->open       = lis3lv02d_joystick_open;
-        adev.idev->close      = lis3lv02d_joystick_close;
+        lis3_dev.idev->name       = "ST LIS3LV02DL Accelerometer";
+        lis3_dev.idev->phys       = DRIVER_NAME "/input0";
+        lis3_dev.idev->id.bustype = BUS_HOST;
+        lis3_dev.idev->id.vendor  = 0;
+        lis3_dev.idev->dev.parent = &lis3_dev.pdev->dev;
+        lis3_dev.idev->open       = lis3lv02d_joystick_open;
+        lis3_dev.idev->close      = lis3lv02d_joystick_close;
 
-        set_bit(EV_ABS, adev.idev->evbit);
-        input_set_abs_params(adev.idev, ABS_X, -adev.mdps_max_val, adev.mdps_max_val, 3, 3);
-        input_set_abs_params(adev.idev, ABS_Y, -adev.mdps_max_val, adev.mdps_max_val, 3, 3);
-        input_set_abs_params(adev.idev, ABS_Z, -adev.mdps_max_val, adev.mdps_max_val, 3, 3);
+        set_bit(EV_ABS, lis3_dev.idev->evbit);
+        input_set_abs_params(lis3_dev.idev, ABS_X, -lis3_dev.mdps_max_val, lis3_dev.mdps_max_val, 3, 3);
+        input_set_abs_params(lis3_dev.idev, ABS_Y, -lis3_dev.mdps_max_val, lis3_dev.mdps_max_val, 3, 3);
+        input_set_abs_params(lis3_dev.idev, ABS_Z, -lis3_dev.mdps_max_val, lis3_dev.mdps_max_val, 3, 3);
 
-        err = input_register_device(adev.idev);
+        err = input_register_device(lis3_dev.idev);
         if (err) {
-                input_free_device(adev.idev);
-                adev.idev = NULL;
+                input_free_device(lis3_dev.idev);
+                lis3_dev.idev = NULL;
         }
 
         return err;
@@ -358,12 +368,12 @@ EXPORT_SYMBOL_GPL(lis3lv02d_joystick_enable);
 
 void lis3lv02d_joystick_disable(void)
 {
-        if (!adev.idev)
+        if (!lis3_dev.idev)
                 return;
 
         misc_deregister(&lis3lv02d_misc_device);
-        input_unregister_device(adev.idev);
-        adev.idev = NULL;
+        input_unregister_device(lis3_dev.idev);
+        lis3_dev.idev = NULL;
 }
 EXPORT_SYMBOL_GPL(lis3lv02d_joystick_disable);
 
@@ -404,25 +414,25 @@ static ssize_t lis3lv02d_position_show(struct device *dev,
 {
         int x, y, z;
 
-        lis3lv02d_increase_use(&adev);
-        lis3lv02d_get_xyz(adev.device->handle, &x, &y, &z);
-        lis3lv02d_decrease_use(&adev);
+        lis3lv02d_increase_use(&lis3_dev);
+        lis3lv02d_get_xyz(lis3_dev.device->handle, &x, &y, &z);
+        lis3lv02d_decrease_use(&lis3_dev);
         return sprintf(buf, "(%d,%d,%d)\n", x, y, z);
 }
 
 static ssize_t lis3lv02d_calibrate_show(struct device *dev,
                                 struct device_attribute *attr, char *buf)
 {
-        return sprintf(buf, "(%d,%d,%d)\n", adev.xcalib, adev.ycalib, adev.zcalib);
+        return sprintf(buf, "(%d,%d,%d)\n", lis3_dev.xcalib, lis3_dev.ycalib, lis3_dev.zcalib);
 }
 
 static ssize_t lis3lv02d_calibrate_store(struct device *dev,
                                 struct device_attribute *attr,
                                 const char *buf, size_t count)
 {
-        lis3lv02d_increase_use(&adev);
+        lis3lv02d_increase_use(&lis3_dev);
         lis3lv02d_calibrate_joystick();
-        lis3lv02d_decrease_use(&adev);
+        lis3lv02d_decrease_use(&lis3_dev);
         return count;
 }
 
@@ -434,9 +444,9 @@ static ssize_t lis3lv02d_rate_show(struct device *dev,
         u8 ctrl;
         int val;
 
-        lis3lv02d_increase_use(&adev);
-        adev.read(adev.device->handle, CTRL_REG1, &ctrl);
-        lis3lv02d_decrease_use(&adev);
+        lis3lv02d_increase_use(&lis3_dev);
+        lis3_dev.read(lis3_dev.device->handle, CTRL_REG1, &ctrl);
+        lis3lv02d_decrease_use(&lis3_dev);
         val = (ctrl & (CTRL1_DF0 | CTRL1_DF1)) >> 4;
         return sprintf(buf, "%d\n", lis3lv02dl_df_val[val]);
 }
@@ -460,17 +470,17 @@ static struct attribute_group lis3lv02d_attribute_group = {
 
 static int lis3lv02d_add_fs(struct acpi_device *device)
 {
-        adev.pdev = platform_device_register_simple(DRIVER_NAME, -1, NULL, 0);
-        if (IS_ERR(adev.pdev))
-                return PTR_ERR(adev.pdev);
+        lis3_dev.pdev = platform_device_register_simple(DRIVER_NAME, -1, NULL, 0);
+        if (IS_ERR(lis3_dev.pdev))
+                return PTR_ERR(lis3_dev.pdev);
 
-        return sysfs_create_group(&adev.pdev->dev.kobj, &lis3lv02d_attribute_group);
+        return sysfs_create_group(&lis3_dev.pdev->dev.kobj, &lis3lv02d_attribute_group);
 }
 
 int lis3lv02d_remove_fs(void)
 {
-        sysfs_remove_group(&adev.pdev->dev.kobj, &lis3lv02d_attribute_group);
-        platform_device_unregister(adev.pdev);
+        sysfs_remove_group(&lis3_dev.pdev->dev.kobj, &lis3lv02d_attribute_group);
+        platform_device_unregister(lis3_dev.pdev);
         return 0;
 }
 EXPORT_SYMBOL_GPL(lis3lv02d_remove_fs);