LIS3LV02D: separate the core from HP ACPI API
The sensor can be accessed via various buses. In particular, SPI, I²C
and, on HP laptops, via a specific ACPI API (the only one currently
supported). Separate this latest platform from the core of the sensor
driver to allow support for the other bus type. The second, and more
direct goal is actually to be able to merge this part with the
hp-disk-leds driver, which has the same ACPI PNP number.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/hwmon/lis3lv02d.h b/drivers/hwmon/lis3lv02d.h
index 330cfc6..223f1c0 100644
--- a/drivers/hwmon/lis3lv02d.h
+++ b/drivers/hwmon/lis3lv02d.h
@@ -23,7 +23,7 @@
* The actual chip is STMicroelectronics LIS3LV02DL or LIS3LV02DQ that seems to
* be connected via SPI. There exists also several similar chips (such as LIS302DL or
* LIS3L02DQ) but not in the HP laptops and they have slightly different registers.
- * They can also be connected via I²C.
+ * They can also be connected via I²C.
*/
#define LIS3LV02DL_ID 0x3A /* Also the LIS3LV02DQ */
@@ -147,3 +147,36 @@
DD_SRC_IA = 0x40,
};
+struct axis_conversion {
+ s8 x;
+ s8 y;
+ s8 z;
+};
+
+struct acpi_lis3lv02d {
+ struct acpi_device *device; /* The ACPI device */
+ acpi_status (*init) (acpi_handle handle);
+ acpi_status (*write) (acpi_handle handle, int reg, u8 val);
+ acpi_status (*read) (acpi_handle handle, int reg, u8 *ret);
+
+ 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 */
+};
+
+int lis3lv02d_init_device(struct acpi_lis3lv02d *dev);
+int lis3lv02d_joystick_enable(void);
+void lis3lv02d_joystick_disable(void);
+void lis3lv02d_poweroff(acpi_handle handle);
+void lis3lv02d_poweron(acpi_handle handle);
+int lis3lv02d_remove_fs(void);
+
+extern struct acpi_lis3lv02d adev;