2008-11-12 21:27:02 +00:00
|
|
|
/*
|
|
|
|
* lis3lv02d.c - ST LIS3LV02DL accelerometer driver
|
|
|
|
*
|
|
|
|
* Copyright (C) 2007-2008 Yan Burman
|
|
|
|
* Copyright (C) 2008 Eric Piel
|
2009-02-18 22:48:23 +00:00
|
|
|
* Copyright (C) 2008-2009 Pavel Machek
|
2008-11-12 21:27:02 +00:00
|
|
|
*
|
|
|
|
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/dmi.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/types.h>
|
|
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <linux/interrupt.h>
|
2009-06-16 22:34:15 +00:00
|
|
|
#include <linux/input-polldev.h>
|
2008-11-12 21:27:02 +00:00
|
|
|
#include <linux/delay.h>
|
|
|
|
#include <linux/wait.h>
|
|
|
|
#include <linux/poll.h>
|
2010-10-22 11:57:24 +00:00
|
|
|
#include <linux/slab.h>
|
2008-11-12 21:27:02 +00:00
|
|
|
#include <linux/freezer.h>
|
|
|
|
#include <linux/uaccess.h>
|
2009-02-18 22:48:23 +00:00
|
|
|
#include <linux/miscdevice.h>
|
2010-10-22 11:57:23 +00:00
|
|
|
#include <linux/pm_runtime.h>
|
2008-11-12 21:27:02 +00:00
|
|
|
#include <asm/atomic.h>
|
|
|
|
#include "lis3lv02d.h"
|
|
|
|
|
|
|
|
#define DRIVER_NAME "lis3lv02d"
|
|
|
|
|
|
|
|
/* joystick device poll interval in milliseconds */
|
|
|
|
#define MDPS_POLL_INTERVAL 50
|
2010-05-24 21:33:37 +00:00
|
|
|
#define MDPS_POLL_MIN 0
|
|
|
|
#define MDPS_POLL_MAX 2000
|
2010-10-22 11:57:23 +00:00
|
|
|
|
|
|
|
#define LIS3_SYSFS_POWERDOWN_DELAY 5000 /* In milliseconds */
|
|
|
|
|
2008-11-12 21:27:02 +00:00
|
|
|
/*
|
|
|
|
* The sensor can also generate interrupts (DRDY) but it's pretty pointless
|
2009-12-15 02:01:39 +00:00
|
|
|
* because they are generated even if the data do not change. So it's better
|
2008-11-12 21:27:02 +00:00
|
|
|
* to keep the interrupt for the free-fall event. The values are updated at
|
|
|
|
* 40Hz (at the lowest frequency), but as it can be pretty time consuming on
|
|
|
|
* some low processor, we poll the sensor only at 20Hz... enough for the
|
|
|
|
* joystick.
|
|
|
|
*/
|
|
|
|
|
2009-12-15 02:01:41 +00:00
|
|
|
#define LIS3_PWRON_DELAY_WAI_12B (5000)
|
|
|
|
#define LIS3_PWRON_DELAY_WAI_8B (3000)
|
|
|
|
|
2009-12-15 02:01:46 +00:00
|
|
|
/*
|
|
|
|
* LIS3LV02D spec says 1024 LSBs corresponds 1 G -> 1LSB is 1000/1024 mG
|
|
|
|
* LIS302D spec says: 18 mG / digit
|
|
|
|
* LIS3_ACCURACY is used to increase accuracy of the intermediate
|
|
|
|
* calculation results.
|
|
|
|
*/
|
|
|
|
#define LIS3_ACCURACY 1024
|
|
|
|
/* Sensitivity values for -2G +2G scale */
|
|
|
|
#define LIS3_SENSITIVITY_12B ((LIS3_ACCURACY * 1000) / 1024)
|
|
|
|
#define LIS3_SENSITIVITY_8B (18 * LIS3_ACCURACY)
|
|
|
|
|
|
|
|
#define LIS3_DEFAULT_FUZZ 3
|
|
|
|
#define LIS3_DEFAULT_FLAT 3
|
|
|
|
|
2009-03-31 22:24:32 +00:00
|
|
|
struct lis3lv02d lis3_dev = {
|
2009-03-31 22:24:26 +00:00
|
|
|
.misc_wait = __WAIT_QUEUE_HEAD_INITIALIZER(lis3_dev.misc_wait),
|
2009-02-18 22:48:23 +00:00
|
|
|
};
|
|
|
|
|
2009-03-31 22:24:26 +00:00
|
|
|
EXPORT_SYMBOL_GPL(lis3_dev);
|
2008-11-12 21:27:02 +00:00
|
|
|
|
2010-10-01 21:14:25 +00:00
|
|
|
/* just like param_set_int() but does sanity-check so that it won't point
|
|
|
|
* over the axis array size
|
|
|
|
*/
|
|
|
|
static int param_set_axis(const char *val, const struct kernel_param *kp)
|
|
|
|
{
|
|
|
|
int ret = param_set_int(val, kp);
|
|
|
|
if (!ret) {
|
|
|
|
int val = *(int *)kp->arg;
|
|
|
|
if (val < 0)
|
|
|
|
val = -val;
|
|
|
|
if (!val || val > 3)
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct kernel_param_ops param_ops_axis = {
|
|
|
|
.set = param_set_axis,
|
|
|
|
.get = param_get_int,
|
|
|
|
};
|
|
|
|
|
|
|
|
module_param_array_named(axes, lis3_dev.ac.as_array, axis, NULL, 0644);
|
|
|
|
MODULE_PARM_DESC(axes, "Axis-mapping for x,y,z directions");
|
|
|
|
|
2009-03-31 22:24:32 +00:00
|
|
|
static s16 lis3lv02d_read_8(struct lis3lv02d *lis3, int reg)
|
|
|
|
{
|
|
|
|
s8 lo;
|
|
|
|
if (lis3->read(lis3, reg, &lo) < 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
return lo;
|
|
|
|
}
|
|
|
|
|
2009-12-15 02:01:39 +00:00
|
|
|
static s16 lis3lv02d_read_12(struct lis3lv02d *lis3, int reg)
|
2009-03-31 22:24:26 +00:00
|
|
|
{
|
|
|
|
u8 lo, hi;
|
|
|
|
|
2009-03-31 22:24:32 +00:00
|
|
|
lis3->read(lis3, reg - 1, &lo);
|
|
|
|
lis3->read(lis3, reg, &hi);
|
2009-03-31 22:24:26 +00:00
|
|
|
/* In "12 bit right justified" mode, bit 6, bit 7, bit 8 = bit 5 */
|
|
|
|
return (s16)((hi << 8) | lo);
|
|
|
|
}
|
|
|
|
|
2008-11-12 21:27:02 +00:00
|
|
|
/**
|
|
|
|
* lis3lv02d_get_axis - For the given axis, give the value converted
|
|
|
|
* @axis: 1,2,3 - can also be negative
|
|
|
|
* @hw_values: raw values returned by the hardware
|
|
|
|
*
|
|
|
|
* Returns the converted value.
|
|
|
|
*/
|
|
|
|
static inline int lis3lv02d_get_axis(s8 axis, int hw_values[3])
|
|
|
|
{
|
|
|
|
if (axis > 0)
|
|
|
|
return hw_values[axis - 1];
|
|
|
|
else
|
|
|
|
return -hw_values[-axis - 1];
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* lis3lv02d_get_xyz - Get X, Y and Z axis values from the accelerometer
|
2009-03-31 22:24:32 +00:00
|
|
|
* @lis3: pointer to the device struct
|
|
|
|
* @x: where to store the X axis value
|
|
|
|
* @y: where to store the Y axis value
|
|
|
|
* @z: where to store the Z axis value
|
2008-11-12 21:27:02 +00:00
|
|
|
*
|
|
|
|
* Note that 40Hz input device can eat up about 10% CPU at 800MHZ
|
|
|
|
*/
|
2009-03-31 22:24:32 +00:00
|
|
|
static void lis3lv02d_get_xyz(struct lis3lv02d *lis3, int *x, int *y, int *z)
|
2008-11-12 21:27:02 +00:00
|
|
|
{
|
|
|
|
int position[3];
|
2009-12-15 02:01:46 +00:00
|
|
|
int i;
|
2008-11-12 21:27:02 +00:00
|
|
|
|
2009-06-16 22:34:14 +00:00
|
|
|
position[0] = lis3->read_data(lis3, OUTX);
|
|
|
|
position[1] = lis3->read_data(lis3, OUTY);
|
|
|
|
position[2] = lis3->read_data(lis3, OUTZ);
|
2008-11-12 21:27:02 +00:00
|
|
|
|
2009-12-15 02:01:46 +00:00
|
|
|
for (i = 0; i < 3; i++)
|
|
|
|
position[i] = (position[i] * lis3->scale) / LIS3_ACCURACY;
|
|
|
|
|
2009-06-16 22:34:14 +00:00
|
|
|
*x = lis3lv02d_get_axis(lis3->ac.x, position);
|
|
|
|
*y = lis3lv02d_get_axis(lis3->ac.y, position);
|
|
|
|
*z = lis3lv02d_get_axis(lis3->ac.z, position);
|
2008-11-12 21:27:02 +00:00
|
|
|
}
|
|
|
|
|
2009-12-15 02:01:41 +00:00
|
|
|
/* conversion btw sampling rate and the register values */
|
|
|
|
static int lis3_12_rates[4] = {40, 160, 640, 2560};
|
|
|
|
static int lis3_8_rates[2] = {100, 400};
|
2010-09-23 17:01:39 +00:00
|
|
|
static int lis3_3dc_rates[16] = {0, 1, 10, 25, 50, 100, 200, 400, 1600, 5000};
|
2009-12-15 02:01:41 +00:00
|
|
|
|
2009-12-15 02:01:44 +00:00
|
|
|
/* ODR is Output Data Rate */
|
2009-12-15 02:01:41 +00:00
|
|
|
static int lis3lv02d_get_odr(void)
|
|
|
|
{
|
|
|
|
u8 ctrl;
|
2009-12-15 02:01:44 +00:00
|
|
|
int shift;
|
2009-12-15 02:01:41 +00:00
|
|
|
|
|
|
|
lis3_dev.read(&lis3_dev, CTRL_REG1, &ctrl);
|
2009-12-15 02:01:44 +00:00
|
|
|
ctrl &= lis3_dev.odr_mask;
|
|
|
|
shift = ffs(lis3_dev.odr_mask) - 1;
|
|
|
|
return lis3_dev.odrs[(ctrl >> shift)];
|
|
|
|
}
|
2009-12-15 02:01:41 +00:00
|
|
|
|
2009-12-15 02:01:44 +00:00
|
|
|
static int lis3lv02d_set_odr(int rate)
|
|
|
|
{
|
|
|
|
u8 ctrl;
|
|
|
|
int i, len, shift;
|
|
|
|
|
2010-09-23 17:01:39 +00:00
|
|
|
if (!rate)
|
|
|
|
return -EINVAL;
|
|
|
|
|
2009-12-15 02:01:44 +00:00
|
|
|
lis3_dev.read(&lis3_dev, CTRL_REG1, &ctrl);
|
|
|
|
ctrl &= ~lis3_dev.odr_mask;
|
|
|
|
len = 1 << hweight_long(lis3_dev.odr_mask); /* # of possible values */
|
|
|
|
shift = ffs(lis3_dev.odr_mask) - 1;
|
|
|
|
|
|
|
|
for (i = 0; i < len; i++)
|
|
|
|
if (lis3_dev.odrs[i] == rate) {
|
|
|
|
lis3_dev.write(&lis3_dev, CTRL_REG1,
|
|
|
|
ctrl | (i << shift));
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
return -EINVAL;
|
2009-12-15 02:01:41 +00:00
|
|
|
}
|
|
|
|
|
2009-12-15 02:01:43 +00:00
|
|
|
static int lis3lv02d_selftest(struct lis3lv02d *lis3, s16 results[3])
|
|
|
|
{
|
2010-09-23 17:01:39 +00:00
|
|
|
u8 ctlreg, reg;
|
2009-12-15 02:01:43 +00:00
|
|
|
s16 x, y, z;
|
|
|
|
u8 selftest;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
mutex_lock(&lis3->mutex);
|
2010-09-23 17:01:39 +00:00
|
|
|
if (lis3_dev.whoami == WAI_3DC) {
|
|
|
|
ctlreg = CTRL_REG4;
|
|
|
|
selftest = CTRL4_ST0;
|
|
|
|
} else {
|
|
|
|
ctlreg = CTRL_REG1;
|
|
|
|
if (lis3_dev.whoami == WAI_12B)
|
|
|
|
selftest = CTRL1_ST;
|
|
|
|
else
|
|
|
|
selftest = CTRL1_STP;
|
|
|
|
}
|
2009-12-15 02:01:43 +00:00
|
|
|
|
2010-09-23 17:01:39 +00:00
|
|
|
lis3->read(lis3, ctlreg, ®);
|
|
|
|
lis3->write(lis3, ctlreg, (reg | selftest));
|
2009-12-15 02:01:43 +00:00
|
|
|
msleep(lis3->pwron_delay / lis3lv02d_get_odr());
|
|
|
|
|
|
|
|
/* Read directly to avoid axis remap */
|
|
|
|
x = lis3->read_data(lis3, OUTX);
|
|
|
|
y = lis3->read_data(lis3, OUTY);
|
|
|
|
z = lis3->read_data(lis3, OUTZ);
|
|
|
|
|
|
|
|
/* back to normal settings */
|
2010-09-23 17:01:39 +00:00
|
|
|
lis3->write(lis3, ctlreg, reg);
|
2009-12-15 02:01:43 +00:00
|
|
|
msleep(lis3->pwron_delay / lis3lv02d_get_odr());
|
|
|
|
|
|
|
|
results[0] = x - lis3->read_data(lis3, OUTX);
|
|
|
|
results[1] = y - lis3->read_data(lis3, OUTY);
|
|
|
|
results[2] = z - lis3->read_data(lis3, OUTZ);
|
|
|
|
|
|
|
|
ret = 0;
|
|
|
|
if (lis3->pdata) {
|
|
|
|
int i;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
|
|
/* Check against selftest acceptance limits */
|
|
|
|
if ((results[i] < lis3->pdata->st_min_limits[i]) ||
|
|
|
|
(results[i] > lis3->pdata->st_max_limits[i])) {
|
|
|
|
ret = -EIO;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* test passed */
|
|
|
|
fail:
|
|
|
|
mutex_unlock(&lis3->mutex);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2010-10-22 11:57:24 +00:00
|
|
|
/*
|
|
|
|
* Order of registers in the list affects to order of the restore process.
|
|
|
|
* Perhaps it is a good idea to set interrupt enable register as a last one
|
|
|
|
* after all other configurations
|
|
|
|
*/
|
|
|
|
static u8 lis3_wai8_regs[] = { FF_WU_CFG_1, FF_WU_THS_1, FF_WU_DURATION_1,
|
|
|
|
FF_WU_CFG_2, FF_WU_THS_2, FF_WU_DURATION_2,
|
|
|
|
CLICK_CFG, CLICK_SRC, CLICK_THSY_X, CLICK_THSZ,
|
|
|
|
CLICK_TIMELIMIT, CLICK_LATENCY, CLICK_WINDOW,
|
|
|
|
CTRL_REG1, CTRL_REG2, CTRL_REG3};
|
|
|
|
|
|
|
|
static u8 lis3_wai12_regs[] = {FF_WU_CFG, FF_WU_THS_L, FF_WU_THS_H,
|
|
|
|
FF_WU_DURATION, DD_CFG, DD_THSI_L, DD_THSI_H,
|
|
|
|
DD_THSE_L, DD_THSE_H,
|
|
|
|
CTRL_REG1, CTRL_REG3, CTRL_REG2};
|
|
|
|
|
|
|
|
static inline void lis3_context_save(struct lis3lv02d *lis3)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
for (i = 0; i < lis3->regs_size; i++)
|
|
|
|
lis3->read(lis3, lis3->regs[i], &lis3->reg_cache[i]);
|
|
|
|
lis3->regs_stored = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void lis3_context_restore(struct lis3lv02d *lis3)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
if (lis3->regs_stored)
|
|
|
|
for (i = 0; i < lis3->regs_size; i++)
|
|
|
|
lis3->write(lis3, lis3->regs[i], lis3->reg_cache[i]);
|
|
|
|
}
|
|
|
|
|
2009-03-31 22:24:32 +00:00
|
|
|
void lis3lv02d_poweroff(struct lis3lv02d *lis3)
|
2008-11-12 21:27:02 +00:00
|
|
|
{
|
2010-10-22 11:57:24 +00:00
|
|
|
if (lis3->reg_ctrl)
|
|
|
|
lis3_context_save(lis3);
|
2009-06-16 22:34:14 +00:00
|
|
|
/* disable X,Y,Z axis and power down */
|
|
|
|
lis3->write(lis3, CTRL_REG1, 0x00);
|
2010-10-22 11:57:24 +00:00
|
|
|
if (lis3->reg_ctrl)
|
|
|
|
lis3->reg_ctrl(lis3, LIS3_REG_OFF);
|
2008-11-12 21:27:02 +00:00
|
|
|
}
|
2009-01-10 00:41:01 +00:00
|
|
|
EXPORT_SYMBOL_GPL(lis3lv02d_poweroff);
|
2008-11-12 21:27:02 +00:00
|
|
|
|
2009-03-31 22:24:32 +00:00
|
|
|
void lis3lv02d_poweron(struct lis3lv02d *lis3)
|
2008-11-12 21:27:02 +00:00
|
|
|
{
|
2009-06-16 22:34:14 +00:00
|
|
|
u8 reg;
|
2008-11-12 21:27:02 +00:00
|
|
|
|
2009-06-16 22:34:14 +00:00
|
|
|
lis3->init(lis3);
|
2008-11-12 21:27:02 +00:00
|
|
|
|
2009-06-16 22:34:14 +00:00
|
|
|
/*
|
|
|
|
* Common configuration
|
2009-12-15 02:01:40 +00:00
|
|
|
* BDU: (12 bits sensors only) LSB and MSB values are not updated until
|
|
|
|
* both have been read. So the value read will always be correct.
|
2010-10-22 11:57:27 +00:00
|
|
|
* Set BOOT bit to refresh factory tuning values.
|
2009-06-16 22:34:14 +00:00
|
|
|
*/
|
2010-10-22 11:57:27 +00:00
|
|
|
lis3->read(lis3, CTRL_REG2, ®);
|
|
|
|
if (lis3->whoami == WAI_12B)
|
|
|
|
reg |= CTRL2_BDU | CTRL2_BOOT;
|
|
|
|
else
|
|
|
|
reg |= CTRL2_BOOT_8B;
|
|
|
|
lis3->write(lis3, CTRL_REG2, reg);
|
|
|
|
|
|
|
|
/* LIS3 power on delay is quite long */
|
|
|
|
msleep(lis3->pwron_delay / lis3lv02d_get_odr());
|
|
|
|
|
2010-10-22 11:57:24 +00:00
|
|
|
if (lis3->reg_ctrl)
|
|
|
|
lis3_context_restore(lis3);
|
2008-11-12 21:27:02 +00:00
|
|
|
}
|
2009-06-16 22:34:14 +00:00
|
|
|
EXPORT_SYMBOL_GPL(lis3lv02d_poweron);
|
|
|
|
|
2008-11-12 21:27:02 +00:00
|
|
|
|
2010-05-24 21:33:37 +00:00
|
|
|
static void lis3lv02d_joystick_poll(struct input_polled_dev *pidev)
|
|
|
|
{
|
|
|
|
int x, y, z;
|
|
|
|
|
|
|
|
mutex_lock(&lis3_dev.mutex);
|
|
|
|
lis3lv02d_get_xyz(&lis3_dev, &x, &y, &z);
|
|
|
|
input_report_abs(pidev->input, ABS_X, x);
|
|
|
|
input_report_abs(pidev->input, ABS_Y, y);
|
|
|
|
input_report_abs(pidev->input, ABS_Z, z);
|
|
|
|
input_sync(pidev->input);
|
|
|
|
mutex_unlock(&lis3_dev.mutex);
|
|
|
|
}
|
|
|
|
|
2010-10-22 11:57:23 +00:00
|
|
|
static void lis3lv02d_joystick_open(struct input_polled_dev *pidev)
|
|
|
|
{
|
|
|
|
if (lis3_dev.pm_dev)
|
|
|
|
pm_runtime_get_sync(lis3_dev.pm_dev);
|
2010-10-22 11:57:25 +00:00
|
|
|
|
|
|
|
if (lis3_dev.pdata && lis3_dev.whoami == WAI_8B && lis3_dev.idev)
|
|
|
|
atomic_set(&lis3_dev.wake_thread, 1);
|
2010-10-22 11:57:26 +00:00
|
|
|
/*
|
|
|
|
* Update coordinates for the case where poll interval is 0 and
|
|
|
|
* the chip in running purely under interrupt control
|
|
|
|
*/
|
|
|
|
lis3lv02d_joystick_poll(pidev);
|
2010-10-22 11:57:23 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void lis3lv02d_joystick_close(struct input_polled_dev *pidev)
|
|
|
|
{
|
2010-10-22 11:57:25 +00:00
|
|
|
atomic_set(&lis3_dev.wake_thread, 0);
|
2010-10-22 11:57:23 +00:00
|
|
|
if (lis3_dev.pm_dev)
|
|
|
|
pm_runtime_put(lis3_dev.pm_dev);
|
|
|
|
}
|
|
|
|
|
2009-02-18 22:48:23 +00:00
|
|
|
static irqreturn_t lis302dl_interrupt(int irq, void *dummy)
|
|
|
|
{
|
2010-05-24 21:33:36 +00:00
|
|
|
if (!test_bit(0, &lis3_dev.misc_opened))
|
|
|
|
goto out;
|
|
|
|
|
2009-02-18 22:48:23 +00:00
|
|
|
/*
|
|
|
|
* Be careful: on some HP laptops the bios force DD when on battery and
|
|
|
|
* the lid is closed. This leads to interrupts as soon as a little move
|
|
|
|
* is done.
|
|
|
|
*/
|
2009-03-31 22:24:26 +00:00
|
|
|
atomic_inc(&lis3_dev.count);
|
2009-02-18 22:48:23 +00:00
|
|
|
|
2009-03-31 22:24:26 +00:00
|
|
|
wake_up_interruptible(&lis3_dev.misc_wait);
|
|
|
|
kill_fasync(&lis3_dev.async_queue, SIGIO, POLL_IN);
|
2010-05-24 21:33:36 +00:00
|
|
|
out:
|
2010-10-22 11:57:25 +00:00
|
|
|
if (atomic_read(&lis3_dev.wake_thread))
|
2010-05-24 21:33:36 +00:00
|
|
|
return IRQ_WAKE_THREAD;
|
2009-02-18 22:48:23 +00:00
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
2010-05-24 21:33:37 +00:00
|
|
|
static void lis302dl_interrupt_handle_click(struct lis3lv02d *lis3)
|
|
|
|
{
|
|
|
|
struct input_dev *dev = lis3->idev->input;
|
|
|
|
u8 click_src;
|
|
|
|
|
|
|
|
mutex_lock(&lis3->mutex);
|
|
|
|
lis3->read(lis3, CLICK_SRC, &click_src);
|
|
|
|
|
|
|
|
if (click_src & CLICK_SINGLE_X) {
|
|
|
|
input_report_key(dev, lis3->mapped_btns[0], 1);
|
|
|
|
input_report_key(dev, lis3->mapped_btns[0], 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (click_src & CLICK_SINGLE_Y) {
|
|
|
|
input_report_key(dev, lis3->mapped_btns[1], 1);
|
|
|
|
input_report_key(dev, lis3->mapped_btns[1], 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (click_src & CLICK_SINGLE_Z) {
|
|
|
|
input_report_key(dev, lis3->mapped_btns[2], 1);
|
|
|
|
input_report_key(dev, lis3->mapped_btns[2], 0);
|
|
|
|
}
|
|
|
|
input_sync(dev);
|
|
|
|
mutex_unlock(&lis3->mutex);
|
|
|
|
}
|
|
|
|
|
2010-05-24 21:33:36 +00:00
|
|
|
static irqreturn_t lis302dl_interrupt_thread1_8b(int irq, void *data)
|
2009-02-18 22:48:23 +00:00
|
|
|
{
|
2010-05-24 21:33:37 +00:00
|
|
|
|
|
|
|
struct lis3lv02d *lis3 = data;
|
|
|
|
|
2010-10-22 11:57:25 +00:00
|
|
|
if ((lis3->irq_cfg & LIS3_IRQ1_MASK) == LIS3_IRQ1_CLICK)
|
2010-05-24 21:33:37 +00:00
|
|
|
lis302dl_interrupt_handle_click(lis3);
|
|
|
|
else
|
2010-10-22 11:57:25 +00:00
|
|
|
lis3lv02d_joystick_poll(lis3->idev);
|
2010-05-24 21:33:37 +00:00
|
|
|
|
2010-05-24 21:33:36 +00:00
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
2009-02-18 22:48:23 +00:00
|
|
|
|
2010-05-24 21:33:36 +00:00
|
|
|
static irqreturn_t lis302dl_interrupt_thread2_8b(int irq, void *data)
|
|
|
|
{
|
2010-05-24 21:33:37 +00:00
|
|
|
|
|
|
|
struct lis3lv02d *lis3 = data;
|
|
|
|
|
2010-10-22 11:57:25 +00:00
|
|
|
if ((lis3->irq_cfg & LIS3_IRQ2_MASK) == LIS3_IRQ2_CLICK)
|
2010-05-24 21:33:37 +00:00
|
|
|
lis302dl_interrupt_handle_click(lis3);
|
|
|
|
else
|
2010-10-22 11:57:25 +00:00
|
|
|
lis3lv02d_joystick_poll(lis3->idev);
|
2010-05-24 21:33:37 +00:00
|
|
|
|
2010-05-24 21:33:36 +00:00
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int lis3lv02d_misc_open(struct inode *inode, struct file *file)
|
|
|
|
{
|
2009-03-31 22:24:26 +00:00
|
|
|
if (test_and_set_bit(0, &lis3_dev.misc_opened))
|
2009-02-18 22:48:23 +00:00
|
|
|
return -EBUSY; /* already open */
|
|
|
|
|
2010-10-22 11:57:23 +00:00
|
|
|
if (lis3_dev.pm_dev)
|
|
|
|
pm_runtime_get_sync(lis3_dev.pm_dev);
|
|
|
|
|
2009-03-31 22:24:26 +00:00
|
|
|
atomic_set(&lis3_dev.count, 0);
|
2009-02-18 22:48:23 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int lis3lv02d_misc_release(struct inode *inode, struct file *file)
|
|
|
|
{
|
2009-03-31 22:24:26 +00:00
|
|
|
fasync_helper(-1, file, 0, &lis3_dev.async_queue);
|
|
|
|
clear_bit(0, &lis3_dev.misc_opened); /* release the device */
|
2010-10-22 11:57:23 +00:00
|
|
|
if (lis3_dev.pm_dev)
|
|
|
|
pm_runtime_put(lis3_dev.pm_dev);
|
2009-02-18 22:48:23 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t lis3lv02d_misc_read(struct file *file, char __user *buf,
|
|
|
|
size_t count, loff_t *pos)
|
|
|
|
{
|
|
|
|
DECLARE_WAITQUEUE(wait, current);
|
|
|
|
u32 data;
|
|
|
|
unsigned char byte_data;
|
|
|
|
ssize_t retval = 1;
|
|
|
|
|
|
|
|
if (count < 1)
|
|
|
|
return -EINVAL;
|
|
|
|
|
2009-03-31 22:24:26 +00:00
|
|
|
add_wait_queue(&lis3_dev.misc_wait, &wait);
|
2009-02-18 22:48:23 +00:00
|
|
|
while (true) {
|
|
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
2009-03-31 22:24:26 +00:00
|
|
|
data = atomic_xchg(&lis3_dev.count, 0);
|
2009-02-18 22:48:23 +00:00
|
|
|
if (data)
|
|
|
|
break;
|
|
|
|
|
|
|
|
if (file->f_flags & O_NONBLOCK) {
|
|
|
|
retval = -EAGAIN;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (signal_pending(current)) {
|
|
|
|
retval = -ERESTARTSYS;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
schedule();
|
|
|
|
}
|
|
|
|
|
|
|
|
if (data < 255)
|
|
|
|
byte_data = data;
|
|
|
|
else
|
|
|
|
byte_data = 255;
|
|
|
|
|
|
|
|
/* make sure we are not going into copy_to_user() with
|
|
|
|
* TASK_INTERRUPTIBLE state */
|
|
|
|
set_current_state(TASK_RUNNING);
|
|
|
|
if (copy_to_user(buf, &byte_data, sizeof(byte_data)))
|
|
|
|
retval = -EFAULT;
|
|
|
|
|
|
|
|
out:
|
|
|
|
__set_current_state(TASK_RUNNING);
|
2009-03-31 22:24:26 +00:00
|
|
|
remove_wait_queue(&lis3_dev.misc_wait, &wait);
|
2009-02-18 22:48:23 +00:00
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
static unsigned int lis3lv02d_misc_poll(struct file *file, poll_table *wait)
|
|
|
|
{
|
2009-03-31 22:24:26 +00:00
|
|
|
poll_wait(file, &lis3_dev.misc_wait, wait);
|
|
|
|
if (atomic_read(&lis3_dev.count))
|
2009-02-18 22:48:23 +00:00
|
|
|
return POLLIN | POLLRDNORM;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int lis3lv02d_misc_fasync(int fd, struct file *file, int on)
|
|
|
|
{
|
2009-03-31 22:24:26 +00:00
|
|
|
return fasync_helper(fd, file, on, &lis3_dev.async_queue);
|
2009-02-18 22:48:23 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static const struct file_operations lis3lv02d_misc_fops = {
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
.llseek = no_llseek,
|
|
|
|
.read = lis3lv02d_misc_read,
|
|
|
|
.open = lis3lv02d_misc_open,
|
|
|
|
.release = lis3lv02d_misc_release,
|
|
|
|
.poll = lis3lv02d_misc_poll,
|
|
|
|
.fasync = lis3lv02d_misc_fasync,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct miscdevice lis3lv02d_misc_device = {
|
|
|
|
.minor = MISC_DYNAMIC_MINOR,
|
|
|
|
.name = "freefall",
|
|
|
|
.fops = &lis3lv02d_misc_fops,
|
|
|
|
};
|
|
|
|
|
2009-01-10 00:41:01 +00:00
|
|
|
int lis3lv02d_joystick_enable(void)
|
2008-11-12 21:27:02 +00:00
|
|
|
{
|
2009-06-16 22:34:15 +00:00
|
|
|
struct input_dev *input_dev;
|
2008-11-12 21:27:02 +00:00
|
|
|
int err;
|
2009-12-15 02:01:46 +00:00
|
|
|
int max_val, fuzz, flat;
|
2010-05-24 21:33:37 +00:00
|
|
|
int btns[] = {BTN_X, BTN_Y, BTN_Z};
|
2008-11-12 21:27:02 +00:00
|
|
|
|
2009-03-31 22:24:26 +00:00
|
|
|
if (lis3_dev.idev)
|
2008-11-12 21:27:02 +00:00
|
|
|
return -EINVAL;
|
|
|
|
|
2009-06-16 22:34:15 +00:00
|
|
|
lis3_dev.idev = input_allocate_polled_device();
|
2009-03-31 22:24:26 +00:00
|
|
|
if (!lis3_dev.idev)
|
2008-11-12 21:27:02 +00:00
|
|
|
return -ENOMEM;
|
|
|
|
|
2009-06-16 22:34:15 +00:00
|
|
|
lis3_dev.idev->poll = lis3lv02d_joystick_poll;
|
2010-10-22 11:57:23 +00:00
|
|
|
lis3_dev.idev->open = lis3lv02d_joystick_open;
|
|
|
|
lis3_dev.idev->close = lis3lv02d_joystick_close;
|
2009-06-16 22:34:15 +00:00
|
|
|
lis3_dev.idev->poll_interval = MDPS_POLL_INTERVAL;
|
2010-05-24 21:33:37 +00:00
|
|
|
lis3_dev.idev->poll_interval_min = MDPS_POLL_MIN;
|
|
|
|
lis3_dev.idev->poll_interval_max = MDPS_POLL_MAX;
|
2009-06-16 22:34:15 +00:00
|
|
|
input_dev = lis3_dev.idev->input;
|
|
|
|
|
|
|
|
input_dev->name = "ST LIS3LV02DL Accelerometer";
|
|
|
|
input_dev->phys = DRIVER_NAME "/input0";
|
|
|
|
input_dev->id.bustype = BUS_HOST;
|
|
|
|
input_dev->id.vendor = 0;
|
|
|
|
input_dev->dev.parent = &lis3_dev.pdev->dev;
|
2008-11-12 21:27:02 +00:00
|
|
|
|
2009-06-16 22:34:15 +00:00
|
|
|
set_bit(EV_ABS, input_dev->evbit);
|
2009-12-15 02:01:46 +00:00
|
|
|
max_val = (lis3_dev.mdps_max_val * lis3_dev.scale) / LIS3_ACCURACY;
|
|
|
|
fuzz = (LIS3_DEFAULT_FUZZ * lis3_dev.scale) / LIS3_ACCURACY;
|
|
|
|
flat = (LIS3_DEFAULT_FLAT * lis3_dev.scale) / LIS3_ACCURACY;
|
|
|
|
input_set_abs_params(input_dev, ABS_X, -max_val, max_val, fuzz, flat);
|
|
|
|
input_set_abs_params(input_dev, ABS_Y, -max_val, max_val, fuzz, flat);
|
|
|
|
input_set_abs_params(input_dev, ABS_Z, -max_val, max_val, fuzz, flat);
|
2008-11-12 21:27:02 +00:00
|
|
|
|
2010-05-24 21:33:37 +00:00
|
|
|
lis3_dev.mapped_btns[0] = lis3lv02d_get_axis(abs(lis3_dev.ac.x), btns);
|
|
|
|
lis3_dev.mapped_btns[1] = lis3lv02d_get_axis(abs(lis3_dev.ac.y), btns);
|
|
|
|
lis3_dev.mapped_btns[2] = lis3lv02d_get_axis(abs(lis3_dev.ac.z), btns);
|
|
|
|
|
2009-06-16 22:34:15 +00:00
|
|
|
err = input_register_polled_device(lis3_dev.idev);
|
2008-11-12 21:27:02 +00:00
|
|
|
if (err) {
|
2009-06-16 22:34:15 +00:00
|
|
|
input_free_polled_device(lis3_dev.idev);
|
2009-03-31 22:24:26 +00:00
|
|
|
lis3_dev.idev = NULL;
|
2008-11-12 21:27:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
2009-01-10 00:41:01 +00:00
|
|
|
EXPORT_SYMBOL_GPL(lis3lv02d_joystick_enable);
|
2008-11-12 21:27:02 +00:00
|
|
|
|
2009-01-10 00:41:01 +00:00
|
|
|
void lis3lv02d_joystick_disable(void)
|
2008-11-12 21:27:02 +00:00
|
|
|
{
|
2010-05-24 21:33:36 +00:00
|
|
|
if (lis3_dev.irq)
|
|
|
|
free_irq(lis3_dev.irq, &lis3_dev);
|
|
|
|
if (lis3_dev.pdata && lis3_dev.pdata->irq2)
|
|
|
|
free_irq(lis3_dev.pdata->irq2, &lis3_dev);
|
|
|
|
|
2009-03-31 22:24:26 +00:00
|
|
|
if (!lis3_dev.idev)
|
2008-11-12 21:27:02 +00:00
|
|
|
return;
|
|
|
|
|
2009-06-16 22:34:13 +00:00
|
|
|
if (lis3_dev.irq)
|
|
|
|
misc_deregister(&lis3lv02d_misc_device);
|
2009-06-16 22:34:15 +00:00
|
|
|
input_unregister_polled_device(lis3_dev.idev);
|
2009-12-15 02:01:39 +00:00
|
|
|
input_free_polled_device(lis3_dev.idev);
|
2009-03-31 22:24:26 +00:00
|
|
|
lis3_dev.idev = NULL;
|
2008-11-12 21:27:02 +00:00
|
|
|
}
|
2009-01-10 00:41:01 +00:00
|
|
|
EXPORT_SYMBOL_GPL(lis3lv02d_joystick_disable);
|
2008-11-12 21:27:02 +00:00
|
|
|
|
|
|
|
/* Sysfs stuff */
|
2010-10-22 11:57:23 +00:00
|
|
|
static void lis3lv02d_sysfs_poweron(struct lis3lv02d *lis3)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* SYSFS functions are fast visitors so put-call
|
|
|
|
* immediately after the get-call. However, keep
|
|
|
|
* chip running for a while and schedule delayed
|
|
|
|
* suspend. This way periodic sysfs calls doesn't
|
|
|
|
* suffer from relatively long power up time.
|
|
|
|
*/
|
|
|
|
|
|
|
|
if (lis3->pm_dev) {
|
|
|
|
pm_runtime_get_sync(lis3->pm_dev);
|
|
|
|
pm_runtime_put_noidle(lis3->pm_dev);
|
|
|
|
pm_schedule_suspend(lis3->pm_dev, LIS3_SYSFS_POWERDOWN_DELAY);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-12-15 02:01:43 +00:00
|
|
|
static ssize_t lis3lv02d_selftest_show(struct device *dev,
|
|
|
|
struct device_attribute *attr, char *buf)
|
|
|
|
{
|
|
|
|
int result;
|
|
|
|
s16 values[3];
|
|
|
|
|
2010-10-22 11:57:23 +00:00
|
|
|
lis3lv02d_sysfs_poweron(&lis3_dev);
|
2009-12-15 02:01:43 +00:00
|
|
|
result = lis3lv02d_selftest(&lis3_dev, values);
|
|
|
|
return sprintf(buf, "%s %d %d %d\n", result == 0 ? "OK" : "FAIL",
|
|
|
|
values[0], values[1], values[2]);
|
|
|
|
}
|
|
|
|
|
2008-11-12 21:27:02 +00:00
|
|
|
static ssize_t lis3lv02d_position_show(struct device *dev,
|
|
|
|
struct device_attribute *attr, char *buf)
|
|
|
|
{
|
|
|
|
int x, y, z;
|
|
|
|
|
2010-10-22 11:57:23 +00:00
|
|
|
lis3lv02d_sysfs_poweron(&lis3_dev);
|
2010-05-24 21:33:37 +00:00
|
|
|
mutex_lock(&lis3_dev.mutex);
|
2009-03-31 22:24:32 +00:00
|
|
|
lis3lv02d_get_xyz(&lis3_dev, &x, &y, &z);
|
2010-05-24 21:33:37 +00:00
|
|
|
mutex_unlock(&lis3_dev.mutex);
|
2008-11-12 21:27:02 +00:00
|
|
|
return sprintf(buf, "(%d,%d,%d)\n", x, y, z);
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t lis3lv02d_rate_show(struct device *dev,
|
|
|
|
struct device_attribute *attr, char *buf)
|
|
|
|
{
|
2010-10-22 11:57:23 +00:00
|
|
|
lis3lv02d_sysfs_poweron(&lis3_dev);
|
2009-12-15 02:01:41 +00:00
|
|
|
return sprintf(buf, "%d\n", lis3lv02d_get_odr());
|
2008-11-12 21:27:02 +00:00
|
|
|
}
|
|
|
|
|
2009-12-15 02:01:44 +00:00
|
|
|
static ssize_t lis3lv02d_rate_set(struct device *dev,
|
|
|
|
struct device_attribute *attr, const char *buf,
|
|
|
|
size_t count)
|
|
|
|
{
|
|
|
|
unsigned long rate;
|
|
|
|
|
|
|
|
if (strict_strtoul(buf, 0, &rate))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2010-10-22 11:57:23 +00:00
|
|
|
lis3lv02d_sysfs_poweron(&lis3_dev);
|
2009-12-15 02:01:44 +00:00
|
|
|
if (lis3lv02d_set_odr(rate))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
2009-12-15 02:01:43 +00:00
|
|
|
static DEVICE_ATTR(selftest, S_IRUSR, lis3lv02d_selftest_show, NULL);
|
2008-11-12 21:27:02 +00:00
|
|
|
static DEVICE_ATTR(position, S_IRUGO, lis3lv02d_position_show, NULL);
|
2009-12-15 02:01:44 +00:00
|
|
|
static DEVICE_ATTR(rate, S_IRUGO | S_IWUSR, lis3lv02d_rate_show,
|
|
|
|
lis3lv02d_rate_set);
|
2008-11-12 21:27:02 +00:00
|
|
|
|
|
|
|
static struct attribute *lis3lv02d_attributes[] = {
|
2009-12-15 02:01:43 +00:00
|
|
|
&dev_attr_selftest.attr,
|
2008-11-12 21:27:02 +00:00
|
|
|
&dev_attr_position.attr,
|
|
|
|
&dev_attr_rate.attr,
|
|
|
|
NULL
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct attribute_group lis3lv02d_attribute_group = {
|
|
|
|
.attrs = lis3lv02d_attributes
|
|
|
|
};
|
|
|
|
|
2009-01-10 00:41:01 +00:00
|
|
|
|
2009-03-31 22:24:32 +00:00
|
|
|
static int lis3lv02d_add_fs(struct lis3lv02d *lis3)
|
2008-11-12 21:27:02 +00:00
|
|
|
{
|
2009-06-16 22:34:14 +00:00
|
|
|
lis3->pdev = platform_device_register_simple(DRIVER_NAME, -1, NULL, 0);
|
|
|
|
if (IS_ERR(lis3->pdev))
|
|
|
|
return PTR_ERR(lis3->pdev);
|
2008-11-12 21:27:02 +00:00
|
|
|
|
2009-06-16 22:34:14 +00:00
|
|
|
return sysfs_create_group(&lis3->pdev->dev.kobj, &lis3lv02d_attribute_group);
|
2008-11-12 21:27:02 +00:00
|
|
|
}
|
|
|
|
|
2009-06-16 22:34:14 +00:00
|
|
|
int lis3lv02d_remove_fs(struct lis3lv02d *lis3)
|
2008-11-12 21:27:02 +00:00
|
|
|
{
|
2009-06-16 22:34:14 +00:00
|
|
|
sysfs_remove_group(&lis3->pdev->dev.kobj, &lis3lv02d_attribute_group);
|
|
|
|
platform_device_unregister(lis3->pdev);
|
2010-10-22 11:57:23 +00:00
|
|
|
if (lis3->pm_dev) {
|
|
|
|
/* Barrier after the sysfs remove */
|
|
|
|
pm_runtime_barrier(lis3->pm_dev);
|
|
|
|
|
|
|
|
/* SYSFS may have left chip running. Turn off if necessary */
|
|
|
|
if (!pm_runtime_suspended(lis3->pm_dev))
|
|
|
|
lis3lv02d_poweroff(&lis3_dev);
|
|
|
|
|
|
|
|
pm_runtime_disable(lis3->pm_dev);
|
|
|
|
pm_runtime_set_suspended(lis3->pm_dev);
|
|
|
|
}
|
2010-10-22 11:57:24 +00:00
|
|
|
kfree(lis3->reg_cache);
|
2008-11-12 21:27:02 +00:00
|
|
|
return 0;
|
|
|
|
}
|
2009-01-10 00:41:01 +00:00
|
|
|
EXPORT_SYMBOL_GPL(lis3lv02d_remove_fs);
|
2008-11-12 21:27:02 +00:00
|
|
|
|
2010-05-24 21:33:34 +00:00
|
|
|
static void lis3lv02d_8b_configure(struct lis3lv02d *dev,
|
|
|
|
struct lis3lv02d_platform_data *p)
|
|
|
|
{
|
2010-05-24 21:33:36 +00:00
|
|
|
int err;
|
2010-05-24 21:33:35 +00:00
|
|
|
int ctrl2 = p->hipass_ctrl;
|
|
|
|
|
2010-05-24 21:33:34 +00:00
|
|
|
if (p->click_flags) {
|
|
|
|
dev->write(dev, CLICK_CFG, p->click_flags);
|
|
|
|
dev->write(dev, CLICK_TIMELIMIT, p->click_time_limit);
|
|
|
|
dev->write(dev, CLICK_LATENCY, p->click_latency);
|
|
|
|
dev->write(dev, CLICK_WINDOW, p->click_window);
|
|
|
|
dev->write(dev, CLICK_THSZ, p->click_thresh_z & 0xf);
|
|
|
|
dev->write(dev, CLICK_THSY_X,
|
|
|
|
(p->click_thresh_x & 0xf) |
|
|
|
|
(p->click_thresh_y << 4));
|
2010-05-24 21:33:37 +00:00
|
|
|
|
|
|
|
if (dev->idev) {
|
|
|
|
struct input_dev *input_dev = lis3_dev.idev->input;
|
|
|
|
input_set_capability(input_dev, EV_KEY, BTN_X);
|
|
|
|
input_set_capability(input_dev, EV_KEY, BTN_Y);
|
|
|
|
input_set_capability(input_dev, EV_KEY, BTN_Z);
|
|
|
|
}
|
2010-05-24 21:33:34 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (p->wakeup_flags) {
|
|
|
|
dev->write(dev, FF_WU_CFG_1, p->wakeup_flags);
|
|
|
|
dev->write(dev, FF_WU_THS_1, p->wakeup_thresh & 0x7f);
|
2010-10-22 11:57:29 +00:00
|
|
|
/* pdata value + 1 to keep this backward compatible*/
|
|
|
|
dev->write(dev, FF_WU_DURATION_1, p->duration1 + 1);
|
2010-05-24 21:33:35 +00:00
|
|
|
ctrl2 ^= HP_FF_WU1; /* Xor to keep compatible with old pdata*/
|
|
|
|
}
|
|
|
|
|
|
|
|
if (p->wakeup_flags2) {
|
|
|
|
dev->write(dev, FF_WU_CFG_2, p->wakeup_flags2);
|
|
|
|
dev->write(dev, FF_WU_THS_2, p->wakeup_thresh2 & 0x7f);
|
2010-10-22 11:57:29 +00:00
|
|
|
/* pdata value + 1 to keep this backward compatible*/
|
|
|
|
dev->write(dev, FF_WU_DURATION_2, p->duration2 + 1);
|
2010-05-24 21:33:35 +00:00
|
|
|
ctrl2 ^= HP_FF_WU2; /* Xor to keep compatible with old pdata*/
|
2010-05-24 21:33:34 +00:00
|
|
|
}
|
2010-05-24 21:33:35 +00:00
|
|
|
/* Configure hipass filters */
|
|
|
|
dev->write(dev, CTRL_REG2, ctrl2);
|
2010-05-24 21:33:36 +00:00
|
|
|
|
|
|
|
if (p->irq2) {
|
|
|
|
err = request_threaded_irq(p->irq2,
|
|
|
|
NULL,
|
|
|
|
lis302dl_interrupt_thread2_8b,
|
2010-10-22 11:57:29 +00:00
|
|
|
IRQF_TRIGGER_RISING | IRQF_ONESHOT |
|
|
|
|
(p->irq_flags2 & IRQF_TRIGGER_MASK),
|
2010-05-24 21:33:36 +00:00
|
|
|
DRIVER_NAME, &lis3_dev);
|
|
|
|
if (err < 0)
|
|
|
|
printk(KERN_ERR DRIVER_NAME
|
|
|
|
"No second IRQ. Limited functionality\n");
|
|
|
|
}
|
2010-05-24 21:33:34 +00:00
|
|
|
}
|
|
|
|
|
2009-03-31 22:24:31 +00:00
|
|
|
/*
|
|
|
|
* Initialise the accelerometer and the various subsystems.
|
2009-12-15 02:01:39 +00:00
|
|
|
* Should be rather independent of the bus system.
|
2009-03-31 22:24:31 +00:00
|
|
|
*/
|
2009-03-31 22:24:32 +00:00
|
|
|
int lis3lv02d_init_device(struct lis3lv02d *dev)
|
2009-03-31 22:24:31 +00:00
|
|
|
{
|
2010-05-24 21:33:36 +00:00
|
|
|
int err;
|
|
|
|
irq_handler_t thread_fn;
|
2010-10-22 11:57:29 +00:00
|
|
|
int irq_flags = 0;
|
2010-05-24 21:33:36 +00:00
|
|
|
|
2009-03-31 22:24:32 +00:00
|
|
|
dev->whoami = lis3lv02d_read_8(dev, WHO_AM_I);
|
|
|
|
|
|
|
|
switch (dev->whoami) {
|
2009-12-15 02:01:39 +00:00
|
|
|
case WAI_12B:
|
|
|
|
printk(KERN_INFO DRIVER_NAME ": 12 bits sensor found\n");
|
|
|
|
dev->read_data = lis3lv02d_read_12;
|
2009-03-31 22:24:32 +00:00
|
|
|
dev->mdps_max_val = 2048;
|
2009-12-15 02:01:41 +00:00
|
|
|
dev->pwron_delay = LIS3_PWRON_DELAY_WAI_12B;
|
2009-12-15 02:01:44 +00:00
|
|
|
dev->odrs = lis3_12_rates;
|
|
|
|
dev->odr_mask = CTRL1_DF0 | CTRL1_DF1;
|
2009-12-15 02:01:46 +00:00
|
|
|
dev->scale = LIS3_SENSITIVITY_12B;
|
2010-10-22 11:57:24 +00:00
|
|
|
dev->regs = lis3_wai12_regs;
|
|
|
|
dev->regs_size = ARRAY_SIZE(lis3_wai12_regs);
|
2009-03-31 22:24:32 +00:00
|
|
|
break;
|
2009-12-15 02:01:39 +00:00
|
|
|
case WAI_8B:
|
|
|
|
printk(KERN_INFO DRIVER_NAME ": 8 bits sensor found\n");
|
2009-03-31 22:24:32 +00:00
|
|
|
dev->read_data = lis3lv02d_read_8;
|
|
|
|
dev->mdps_max_val = 128;
|
2009-12-15 02:01:41 +00:00
|
|
|
dev->pwron_delay = LIS3_PWRON_DELAY_WAI_8B;
|
2009-12-15 02:01:44 +00:00
|
|
|
dev->odrs = lis3_8_rates;
|
|
|
|
dev->odr_mask = CTRL1_DR;
|
2009-12-15 02:01:46 +00:00
|
|
|
dev->scale = LIS3_SENSITIVITY_8B;
|
2010-10-22 11:57:24 +00:00
|
|
|
dev->regs = lis3_wai8_regs;
|
|
|
|
dev->regs_size = ARRAY_SIZE(lis3_wai8_regs);
|
2009-03-31 22:24:32 +00:00
|
|
|
break;
|
2010-09-23 17:01:39 +00:00
|
|
|
case WAI_3DC:
|
|
|
|
printk(KERN_INFO DRIVER_NAME ": 8 bits 3DC sensor found\n");
|
|
|
|
dev->read_data = lis3lv02d_read_8;
|
|
|
|
dev->mdps_max_val = 128;
|
|
|
|
dev->pwron_delay = LIS3_PWRON_DELAY_WAI_8B;
|
|
|
|
dev->odrs = lis3_3dc_rates;
|
|
|
|
dev->odr_mask = CTRL1_ODR0|CTRL1_ODR1|CTRL1_ODR2|CTRL1_ODR3;
|
|
|
|
dev->scale = LIS3_SENSITIVITY_8B;
|
|
|
|
break;
|
2009-03-31 22:24:32 +00:00
|
|
|
default:
|
|
|
|
printk(KERN_ERR DRIVER_NAME
|
2009-06-16 22:34:14 +00:00
|
|
|
": unknown sensor type 0x%X\n", dev->whoami);
|
2009-03-31 22:24:32 +00:00
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2010-10-22 11:57:24 +00:00
|
|
|
dev->reg_cache = kzalloc(max(sizeof(lis3_wai8_regs),
|
|
|
|
sizeof(lis3_wai12_regs)), GFP_KERNEL);
|
|
|
|
|
|
|
|
if (dev->reg_cache == NULL) {
|
|
|
|
printk(KERN_ERR DRIVER_NAME "out of memory\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
2009-12-15 02:01:43 +00:00
|
|
|
mutex_init(&dev->mutex);
|
2010-10-22 11:57:25 +00:00
|
|
|
atomic_set(&dev->wake_thread, 0);
|
2009-12-15 02:01:43 +00:00
|
|
|
|
2009-03-31 22:24:32 +00:00
|
|
|
lis3lv02d_add_fs(dev);
|
2009-06-16 22:34:14 +00:00
|
|
|
lis3lv02d_poweron(dev);
|
2009-03-31 22:24:31 +00:00
|
|
|
|
2010-10-22 11:57:23 +00:00
|
|
|
if (dev->pm_dev) {
|
|
|
|
pm_runtime_set_active(dev->pm_dev);
|
|
|
|
pm_runtime_enable(dev->pm_dev);
|
|
|
|
}
|
|
|
|
|
2009-03-31 22:24:31 +00:00
|
|
|
if (lis3lv02d_joystick_enable())
|
|
|
|
printk(KERN_ERR DRIVER_NAME ": joystick initialization failed\n");
|
|
|
|
|
2009-06-16 22:34:17 +00:00
|
|
|
/* passing in platform specific data is purely optional and only
|
|
|
|
* used by the SPI transport layer at the moment */
|
|
|
|
if (dev->pdata) {
|
|
|
|
struct lis3lv02d_platform_data *p = dev->pdata;
|
|
|
|
|
2010-05-24 21:33:34 +00:00
|
|
|
if (dev->whoami == WAI_8B)
|
|
|
|
lis3lv02d_8b_configure(dev, p);
|
2009-09-22 00:04:43 +00:00
|
|
|
|
2010-10-22 11:57:29 +00:00
|
|
|
irq_flags = p->irq_flags1 & IRQF_TRIGGER_MASK;
|
|
|
|
|
2010-10-22 11:57:25 +00:00
|
|
|
dev->irq_cfg = p->irq_cfg;
|
2009-06-16 22:34:17 +00:00
|
|
|
if (p->irq_cfg)
|
|
|
|
dev->write(dev, CTRL_REG3, p->irq_cfg);
|
2010-10-22 11:57:29 +00:00
|
|
|
|
|
|
|
if (p->default_rate)
|
|
|
|
lis3lv02d_set_odr(p->default_rate);
|
2009-06-16 22:34:17 +00:00
|
|
|
}
|
|
|
|
|
2009-03-31 22:24:32 +00:00
|
|
|
/* bail if we did not get an IRQ from the bus layer */
|
2009-03-31 22:24:31 +00:00
|
|
|
if (!dev->irq) {
|
|
|
|
printk(KERN_ERR DRIVER_NAME
|
2009-03-31 22:24:32 +00:00
|
|
|
": No IRQ. Disabling /dev/freefall\n");
|
2009-03-31 22:24:31 +00:00
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
2010-05-24 21:33:36 +00:00
|
|
|
/*
|
|
|
|
* The sensor can generate interrupts for free-fall and direction
|
|
|
|
* detection (distinguishable with FF_WU_SRC and DD_SRC) but to keep
|
|
|
|
* the things simple and _fast_ we activate it only for free-fall, so
|
|
|
|
* no need to read register (very slow with ACPI). For the same reason,
|
|
|
|
* we forbid shared interrupts.
|
|
|
|
*
|
|
|
|
* IRQF_TRIGGER_RISING seems pointless on HP laptops because the
|
|
|
|
* io-apic is not configurable (and generates a warning) but I keep it
|
|
|
|
* in case of support for other hardware.
|
|
|
|
*/
|
2010-09-23 17:01:11 +00:00
|
|
|
if (dev->pdata && dev->whoami == WAI_8B)
|
2010-05-24 21:33:36 +00:00
|
|
|
thread_fn = lis302dl_interrupt_thread1_8b;
|
|
|
|
else
|
|
|
|
thread_fn = NULL;
|
|
|
|
|
|
|
|
err = request_threaded_irq(dev->irq, lis302dl_interrupt,
|
|
|
|
thread_fn,
|
2010-10-22 11:57:29 +00:00
|
|
|
IRQF_TRIGGER_RISING | IRQF_ONESHOT |
|
|
|
|
irq_flags,
|
2010-05-24 21:33:36 +00:00
|
|
|
DRIVER_NAME, &lis3_dev);
|
|
|
|
|
|
|
|
if (err < 0) {
|
|
|
|
printk(KERN_ERR DRIVER_NAME "Cannot get IRQ\n");
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
2009-03-31 22:24:31 +00:00
|
|
|
if (misc_register(&lis3lv02d_misc_device))
|
|
|
|
printk(KERN_ERR DRIVER_NAME ": misc_register failed\n");
|
|
|
|
out:
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(lis3lv02d_init_device);
|
|
|
|
|
2008-11-12 21:27:02 +00:00
|
|
|
MODULE_DESCRIPTION("ST LIS3LV02Dx three-axis digital accelerometer driver");
|
2009-02-18 22:48:23 +00:00
|
|
|
MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek");
|
2008-11-12 21:27:02 +00:00
|
|
|
MODULE_LICENSE("GPL");
|