* lis3lv02d.h - ST LIS3LV02DL accelerometer driver
*
* Copyright (C) 2007-2008 Yan Burman
- * Copyright (C) 2008 Eric Piel
+ * Copyright (C) 2008-2009 Eric Piel
*
* 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
* 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/platform_device.h>
+#include <linux/input-polldev.h>
/*
- * 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.
+ * This driver tries to support the "digital" accelerometer chips from
+ * STMicroelectronics such as LIS3LV02DL, LIS302DL, LIS3L02DQ, LIS331DL,
+ * LIS35DE, or LIS202DL. They are very similar in terms of programming, with
+ * almost the same registers. In addition to differing on physical properties,
+ * they differ on the number of axes (2/3), precision (8/12 bits), and special
+ * features (freefall detection, click...). Unfortunately, not all the
+ * differences can be probed via a register.
+ * They can be connected either via I²C or SPI.
*/
-#define LIS3LV02DL_ID 0x3A /* Also the LIS3LV02DQ */
-#define LIS302DL_ID 0x3B /* Also the LIS202DL! */
+#include <linux/lis3lv02d.h>
-enum lis3lv02d_reg {
+enum lis3_reg {
WHO_AM_I = 0x0F,
OFFSET_X = 0x16,
OFFSET_Y = 0x17,
STATUS_REG = 0x27,
OUTX_L = 0x28,
OUTX_H = 0x29,
+ OUTX = 0x29,
OUTY_L = 0x2A,
OUTY_H = 0x2B,
+ OUTY = 0x2B,
OUTZ_L = 0x2C,
OUTZ_H = 0x2D,
+ OUTZ = 0x2D,
+};
+
+enum lis302d_reg {
+ FF_WU_CFG_1 = 0x30,
+ FF_WU_SRC_1 = 0x31,
+ FF_WU_THS_1 = 0x32,
+ FF_WU_DURATION_1 = 0x33,
+ FF_WU_CFG_2 = 0x34,
+ FF_WU_SRC_2 = 0x35,
+ FF_WU_THS_2 = 0x36,
+ FF_WU_DURATION_2 = 0x37,
+ CLICK_CFG = 0x38,
+ CLICK_SRC = 0x39,
+ CLICK_THSY_X = 0x3B,
+ CLICK_THSZ = 0x3C,
+ CLICK_TIMELIMIT = 0x3D,
+ CLICK_LATENCY = 0x3E,
+ CLICK_WINDOW = 0x3F,
+};
+
+enum lis3lv02d_reg {
FF_WU_CFG = 0x30,
FF_WU_SRC = 0x31,
FF_WU_ACK = 0x32,
DD_THSE_H = 0x3F,
};
-enum lis3lv02d_ctrl1 {
+enum lis3_who_am_i {
+ WAI_12B = 0x3A, /* 12 bits: LIS3LV02D[LQ]... */
+ WAI_8B = 0x3B, /* 8 bits: LIS[23]02D[LQ]... */
+ WAI_6B = 0x52, /* 6 bits: LIS331DLF - not supported */
+};
+
+enum lis3lv02d_ctrl1_12b {
CTRL1_Xen = 0x01,
CTRL1_Yen = 0x02,
CTRL1_Zen = 0x04,
CTRL1_PD0 = 0x40,
CTRL1_PD1 = 0x80,
};
+
+/* Delta to ctrl1_12b version */
+enum lis3lv02d_ctrl1_8b {
+ CTRL1_STM = 0x08,
+ CTRL1_STP = 0x10,
+ CTRL1_FS = 0x20,
+ CTRL1_PD = 0x40,
+ CTRL1_DR = 0x80,
+};
+
enum lis3lv02d_ctrl2 {
CTRL2_DAS = 0x01,
CTRL2_SIM = 0x02,
CTRL2_FS = 0x80, /* Full Scale selection */
};
+enum lis302d_ctrl2 {
+ HP_FF_WU2 = 0x08,
+ HP_FF_WU1 = 0x04,
+};
enum lis3lv02d_ctrl3 {
CTRL3_CFS0 = 0x01,
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 lis3lv02d {
+ void *bus_priv; /* used by the bus layer only */
+ int (*init) (struct lis3lv02d *lis3);
+ int (*write) (struct lis3lv02d *lis3, int reg, u8 val);
+ int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret);
+
+ int *odrs; /* Supported output data rates */
+ u8 odr_mask; /* ODR bit mask */
+ u8 whoami; /* indicates measurement precision */
+ s16 (*read_data) (struct lis3lv02d *lis3, int reg);
+ int mdps_max_val;
+ int pwron_delay;
+ int scale; /*
+ * relationship between 1 LBS and mG
+ * (1/1000th of earth gravity)
+ */
+
+ struct input_polled_dev *idev; /* input device */
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 */
+
+ u32 irq; /* IRQ number */
+ struct fasync_struct *async_queue; /* queue for the misc device */
+ wait_queue_head_t misc_wait; /* Wait queue for the misc device */
+ unsigned long misc_opened; /* bit0: whether the device is open */
+
+ struct lis3lv02d_platform_data *pdata; /* for passing board config */
+ struct mutex mutex; /* Serialize poll and selftest */
};
-int lis3lv02d_init_device(struct acpi_lis3lv02d *dev);
+int lis3lv02d_init_device(struct lis3lv02d *lis3);
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);
+void lis3lv02d_poweroff(struct lis3lv02d *lis3);
+void lis3lv02d_poweron(struct lis3lv02d *lis3);
+int lis3lv02d_remove_fs(struct lis3lv02d *lis3);
-extern struct acpi_lis3lv02d adev;
+extern struct lis3lv02d lis3_dev;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff