Input: add CMA3000 accelerometer driver
Add support for CMA3000 Tri-axis accelerometer, which supports Motion detect, Measurement and Free fall modes. CMA3000 supports both I2C/SPI bus for communication, currently the driver supports I2C based communication. Signed-off-by: Hemanth V <hemanthv@ti.com> Reviewed-by: Jonathan Cameron <jic23@cam.ac.uk> Reviewed-by: Sergio Aguirre <saaguirre@ti.com> Reviewed-by: Shubhrajyoti <Shubhrajyoti@ti.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Hemanth V
committed by
Dmitry Torokhov
Dmitry Torokhov
parent
33e808c383
commit
b029ffafe8
@@ -448,4 +448,28 @@ config INPUT_ADXL34X_SPI
|
||||
To compile this driver as a module, choose M here: the
|
||||
module will be called adxl34x-spi.
|
||||
|
||||
config INPUT_CMA3000
|
||||
tristate "VTI CMA3000 Tri-axis accelerometer"
|
||||
help
|
||||
Say Y here if you want to use VTI CMA3000_D0x Accelerometer
|
||||
driver
|
||||
|
||||
This driver currently only supports I2C interface to the
|
||||
controller. Also select the I2C method.
|
||||
|
||||
If unsure, say N
|
||||
|
||||
To compile this driver as a module, choose M here: the
|
||||
module will be called cma3000_d0x.
|
||||
|
||||
config INPUT_CMA3000_I2C
|
||||
tristate "Support I2C bus connection"
|
||||
depends on INPUT_CMA3000 && I2C
|
||||
help
|
||||
Say Y here if you want to use VTI CMA3000_D0x Accelerometer
|
||||
through I2C interface.
|
||||
|
||||
To compile this driver as a module, choose M here: the
|
||||
module will be called cma3000_d0x_i2c.
|
||||
|
||||
endif
|
||||
|
||||
@@ -18,6 +18,8 @@ obj-$(CONFIG_INPUT_ATI_REMOTE2) += ati_remote2.o
|
||||
obj-$(CONFIG_INPUT_ATLAS_BTNS) += atlas_btns.o
|
||||
obj-$(CONFIG_INPUT_BFIN_ROTARY) += bfin_rotary.o
|
||||
obj-$(CONFIG_INPUT_CM109) += cm109.o
|
||||
obj-$(CONFIG_INPUT_CMA3000) += cma3000_d0x.o
|
||||
obj-$(CONFIG_INPUT_CMA3000_I2C) += cma3000_d0x_i2c.o
|
||||
obj-$(CONFIG_INPUT_COBALT_BTNS) += cobalt_btns.o
|
||||
obj-$(CONFIG_INPUT_DM355EVM) += dm355evm_keys.o
|
||||
obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o
|
||||
|
||||
398
drivers/input/misc/cma3000_d0x.c
Normal file
398
drivers/input/misc/cma3000_d0x.c
Normal file
@@ -0,0 +1,398 @@
|
||||
/*
|
||||
* VTI CMA3000_D0x Accelerometer driver
|
||||
*
|
||||
* Copyright (C) 2010 Texas Instruments
|
||||
* Author: Hemanth V <hemanthv@ti.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 as published by
|
||||
* the Free Software Foundation.
|
||||
*
|
||||
* 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, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include <linux/types.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/input.h>
|
||||
#include <linux/input/cma3000.h>
|
||||
|
||||
#include "cma3000_d0x.h"
|
||||
|
||||
#define CMA3000_WHOAMI 0x00
|
||||
#define CMA3000_REVID 0x01
|
||||
#define CMA3000_CTRL 0x02
|
||||
#define CMA3000_STATUS 0x03
|
||||
#define CMA3000_RSTR 0x04
|
||||
#define CMA3000_INTSTATUS 0x05
|
||||
#define CMA3000_DOUTX 0x06
|
||||
#define CMA3000_DOUTY 0x07
|
||||
#define CMA3000_DOUTZ 0x08
|
||||
#define CMA3000_MDTHR 0x09
|
||||
#define CMA3000_MDFFTMR 0x0A
|
||||
#define CMA3000_FFTHR 0x0B
|
||||
|
||||
#define CMA3000_RANGE2G (1 << 7)
|
||||
#define CMA3000_RANGE8G (0 << 7)
|
||||
#define CMA3000_BUSI2C (0 << 4)
|
||||
#define CMA3000_MODEMASK (7 << 1)
|
||||
#define CMA3000_GRANGEMASK (1 << 7)
|
||||
|
||||
#define CMA3000_STATUS_PERR 1
|
||||
#define CMA3000_INTSTATUS_FFDET (1 << 2)
|
||||
|
||||
/* Settling time delay in ms */
|
||||
#define CMA3000_SETDELAY 30
|
||||
|
||||
/* Delay for clearing interrupt in us */
|
||||
#define CMA3000_INTDELAY 44
|
||||
|
||||
|
||||
/*
|
||||
* Bit weights in mg for bit 0, other bits need
|
||||
* multipy factor 2^n. Eight bit is the sign bit.
|
||||
*/
|
||||
#define BIT_TO_2G 18
|
||||
#define BIT_TO_8G 71
|
||||
|
||||
struct cma3000_accl_data {
|
||||
const struct cma3000_bus_ops *bus_ops;
|
||||
const struct cma3000_platform_data *pdata;
|
||||
|
||||
struct device *dev;
|
||||
struct input_dev *input_dev;
|
||||
|
||||
int bit_to_mg;
|
||||
int irq;
|
||||
|
||||
int g_range;
|
||||
u8 mode;
|
||||
|
||||
struct mutex mutex;
|
||||
bool opened;
|
||||
bool suspended;
|
||||
};
|
||||
|
||||
#define CMA3000_READ(data, reg, msg) \
|
||||
(data->bus_ops->read(data->dev, reg, msg))
|
||||
#define CMA3000_SET(data, reg, val, msg) \
|
||||
((data)->bus_ops->write(data->dev, reg, val, msg))
|
||||
|
||||
/*
|
||||
* Conversion for each of the eight modes to g, depending
|
||||
* on G range i.e 2G or 8G. Some modes always operate in
|
||||
* 8G.
|
||||
*/
|
||||
|
||||
static int mode_to_mg[8][2] = {
|
||||
{ 0, 0 },
|
||||
{ BIT_TO_8G, BIT_TO_2G },
|
||||
{ BIT_TO_8G, BIT_TO_2G },
|
||||
{ BIT_TO_8G, BIT_TO_8G },
|
||||
{ BIT_TO_8G, BIT_TO_8G },
|
||||
{ BIT_TO_8G, BIT_TO_2G },
|
||||
{ BIT_TO_8G, BIT_TO_2G },
|
||||
{ 0, 0},
|
||||
};
|
||||
|
||||
static void decode_mg(struct cma3000_accl_data *data, int *datax,
|
||||
int *datay, int *dataz)
|
||||
{
|
||||
/* Data in 2's complement, convert to mg */
|
||||
*datax = ((s8)*datax) * data->bit_to_mg;
|
||||
*datay = ((s8)*datay) * data->bit_to_mg;
|
||||
*dataz = ((s8)*dataz) * data->bit_to_mg;
|
||||
}
|
||||
|
||||
static irqreturn_t cma3000_thread_irq(int irq, void *dev_id)
|
||||
{
|
||||
struct cma3000_accl_data *data = dev_id;
|
||||
int datax, datay, dataz;
|
||||
u8 ctrl, mode, range, intr_status;
|
||||
|
||||
intr_status = CMA3000_READ(data, CMA3000_INTSTATUS, "interrupt status");
|
||||
if (intr_status < 0)
|
||||
return IRQ_NONE;
|
||||
|
||||
/* Check if free fall is detected, report immediately */
|
||||
if (intr_status & CMA3000_INTSTATUS_FFDET) {
|
||||
input_report_abs(data->input_dev, ABS_MISC, 1);
|
||||
input_sync(data->input_dev);
|
||||
} else {
|
||||
input_report_abs(data->input_dev, ABS_MISC, 0);
|
||||
}
|
||||
|
||||
datax = CMA3000_READ(data, CMA3000_DOUTX, "X");
|
||||
datay = CMA3000_READ(data, CMA3000_DOUTY, "Y");
|
||||
dataz = CMA3000_READ(data, CMA3000_DOUTZ, "Z");
|
||||
|
||||
ctrl = CMA3000_READ(data, CMA3000_CTRL, "ctrl");
|
||||
mode = (ctrl & CMA3000_MODEMASK) >> 1;
|
||||
range = (ctrl & CMA3000_GRANGEMASK) >> 7;
|
||||
|
||||
data->bit_to_mg = mode_to_mg[mode][range];
|
||||
|
||||
/* Interrupt not for this device */
|
||||
if (data->bit_to_mg == 0)
|
||||
return IRQ_NONE;
|
||||
|
||||
/* Decode register values to milli g */
|
||||
decode_mg(data, &datax, &datay, &dataz);
|
||||
|
||||
input_report_abs(data->input_dev, ABS_X, datax);
|
||||
input_report_abs(data->input_dev, ABS_Y, datay);
|
||||
input_report_abs(data->input_dev, ABS_Z, dataz);
|
||||
input_sync(data->input_dev);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static int cma3000_reset(struct cma3000_accl_data *data)
|
||||
{
|
||||
int val;
|
||||
|
||||
/* Reset sequence */
|
||||
CMA3000_SET(data, CMA3000_RSTR, 0x02, "Reset");
|
||||
CMA3000_SET(data, CMA3000_RSTR, 0x0A, "Reset");
|
||||
CMA3000_SET(data, CMA3000_RSTR, 0x04, "Reset");
|
||||
|
||||
/* Settling time delay */
|
||||
mdelay(10);
|
||||
|
||||
val = CMA3000_READ(data, CMA3000_STATUS, "Status");
|
||||
if (val < 0) {
|
||||
dev_err(data->dev, "Reset failed\n");
|
||||
return val;
|
||||
}
|
||||
|
||||
if (val & CMA3000_STATUS_PERR) {
|
||||
dev_err(data->dev, "Parity Error\n");
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cma3000_poweron(struct cma3000_accl_data *data)
|
||||
{
|
||||
const struct cma3000_platform_data *pdata = data->pdata;
|
||||
u8 ctrl = 0;
|
||||
int ret;
|
||||
|
||||
if (data->g_range == CMARANGE_2G) {
|
||||
ctrl = (data->mode << 1) | CMA3000_RANGE2G;
|
||||
} else if (data->g_range == CMARANGE_8G) {
|
||||
ctrl = (data->mode << 1) | CMA3000_RANGE8G;
|
||||
} else {
|
||||
dev_info(data->dev,
|
||||
"Invalid G range specified, assuming 8G\n");
|
||||
ctrl = (data->mode << 1) | CMA3000_RANGE8G;
|
||||
}
|
||||
|
||||
ctrl |= data->bus_ops->ctrl_mod;
|
||||
|
||||
CMA3000_SET(data, CMA3000_MDTHR, pdata->mdthr,
|
||||
"Motion Detect Threshold");
|
||||
CMA3000_SET(data, CMA3000_MDFFTMR, pdata->mdfftmr,
|
||||
"Time register");
|
||||
CMA3000_SET(data, CMA3000_FFTHR, pdata->ffthr,
|
||||
"Free fall threshold");
|
||||
ret = CMA3000_SET(data, CMA3000_CTRL, ctrl, "Mode setting");
|
||||
if (ret < 0)
|
||||
return -EIO;
|
||||
|
||||
msleep(CMA3000_SETDELAY);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cma3000_poweroff(struct cma3000_accl_data *data)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = CMA3000_SET(data, CMA3000_CTRL, CMAMODE_POFF, "Mode setting");
|
||||
msleep(CMA3000_SETDELAY);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int cma3000_open(struct input_dev *input_dev)
|
||||
{
|
||||
struct cma3000_accl_data *data = input_get_drvdata(input_dev);
|
||||
|
||||
mutex_lock(&data->mutex);
|
||||
|
||||
if (!data->suspended)
|
||||
cma3000_poweron(data);
|
||||
|
||||
data->opened = true;
|
||||
|
||||
mutex_unlock(&data->mutex);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void cma3000_close(struct input_dev *input_dev)
|
||||
{
|
||||
struct cma3000_accl_data *data = input_get_drvdata(input_dev);
|
||||
|
||||
mutex_lock(&data->mutex);
|
||||
|
||||
if (!data->suspended)
|
||||
cma3000_poweroff(data);
|
||||
|
||||
data->opened = false;
|
||||
|
||||
mutex_unlock(&data->mutex);
|
||||
}
|
||||
|
||||
void cma3000_suspend(struct cma3000_accl_data *data)
|
||||
{
|
||||
mutex_lock(&data->mutex);
|
||||
|
||||
if (!data->suspended && data->opened)
|
||||
cma3000_poweroff(data);
|
||||
|
||||
data->suspended = true;
|
||||
|
||||
mutex_unlock(&data->mutex);
|
||||
}
|
||||
EXPORT_SYMBOL(cma3000_suspend);
|
||||
|
||||
|
||||
void cma3000_resume(struct cma3000_accl_data *data)
|
||||
{
|
||||
mutex_lock(&data->mutex);
|
||||
|
||||
if (data->suspended && data->opened)
|
||||
cma3000_poweron(data);
|
||||
|
||||
data->suspended = false;
|
||||
|
||||
mutex_unlock(&data->mutex);
|
||||
}
|
||||
EXPORT_SYMBOL(cma3000_resume);
|
||||
|
||||
struct cma3000_accl_data *cma3000_init(struct device *dev, int irq,
|
||||
const struct cma3000_bus_ops *bops)
|
||||
{
|
||||
const struct cma3000_platform_data *pdata = dev->platform_data;
|
||||
struct cma3000_accl_data *data;
|
||||
struct input_dev *input_dev;
|
||||
int rev;
|
||||
int error;
|
||||
|
||||
if (!pdata) {
|
||||
dev_err(dev, "platform data not found\n");
|
||||
error = -EINVAL;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
|
||||
/* if no IRQ return error */
|
||||
if (irq == 0) {
|
||||
error = -EINVAL;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
data = kzalloc(sizeof(struct cma3000_accl_data), GFP_KERNEL);
|
||||
input_dev = input_allocate_device();
|
||||
if (!data || !input_dev) {
|
||||
error = -ENOMEM;
|
||||
goto err_free_mem;
|
||||
}
|
||||
|
||||
data->dev = dev;
|
||||
data->input_dev = input_dev;
|
||||
data->bus_ops = bops;
|
||||
data->pdata = pdata;
|
||||
data->irq = irq;
|
||||
mutex_init(&data->mutex);
|
||||
|
||||
data->mode = pdata->mode;
|
||||
if (data->mode < CMAMODE_DEFAULT || data->mode > CMAMODE_POFF) {
|
||||
data->mode = CMAMODE_MOTDET;
|
||||
dev_warn(dev,
|
||||
"Invalid mode specified, assuming Motion Detect\n");
|
||||
}
|
||||
|
||||
data->g_range = pdata->g_range;
|
||||
if (data->g_range != CMARANGE_2G && data->g_range != CMARANGE_8G) {
|
||||
dev_info(dev,
|
||||
"Invalid G range specified, assuming 8G\n");
|
||||
data->g_range = CMARANGE_8G;
|
||||
}
|
||||
|
||||
input_dev->name = "cma3000-accelerometer";
|
||||
input_dev->id.bustype = bops->bustype;
|
||||
input_dev->open = cma3000_open;
|
||||
input_dev->close = cma3000_close;
|
||||
|
||||
__set_bit(EV_ABS, input_dev->evbit);
|
||||
|
||||
input_set_abs_params(input_dev, ABS_X,
|
||||
-data->g_range, data->g_range, pdata->fuzz_x, 0);
|
||||
input_set_abs_params(input_dev, ABS_Y,
|
||||
-data->g_range, data->g_range, pdata->fuzz_y, 0);
|
||||
input_set_abs_params(input_dev, ABS_Z,
|
||||
-data->g_range, data->g_range, pdata->fuzz_z, 0);
|
||||
input_set_abs_params(input_dev, ABS_MISC, 0, 1, 0, 0);
|
||||
|
||||
input_set_drvdata(input_dev, data);
|
||||
|
||||
error = cma3000_reset(data);
|
||||
if (error)
|
||||
goto err_free_mem;
|
||||
|
||||
rev = CMA3000_READ(data, CMA3000_REVID, "Revid");
|
||||
if (rev < 0) {
|
||||
error = rev;
|
||||
goto err_free_mem;
|
||||
}
|
||||
|
||||
pr_info("CMA3000 Accelerometer: Revision %x\n", rev);
|
||||
|
||||
error = request_threaded_irq(irq, NULL, cma3000_thread_irq,
|
||||
pdata->irqflags | IRQF_ONESHOT,
|
||||
"cma3000_d0x", data);
|
||||
if (error) {
|
||||
dev_err(dev, "request_threaded_irq failed\n");
|
||||
goto err_free_mem;
|
||||
}
|
||||
|
||||
error = input_register_device(data->input_dev);
|
||||
if (error) {
|
||||
dev_err(dev, "Unable to register input device\n");
|
||||
goto err_free_irq;
|
||||
}
|
||||
|
||||
return data;
|
||||
|
||||
err_free_irq:
|
||||
free_irq(irq, data);
|
||||
err_free_mem:
|
||||
input_free_device(input_dev);
|
||||
kfree(data);
|
||||
err_out:
|
||||
return ERR_PTR(error);
|
||||
}
|
||||
EXPORT_SYMBOL(cma3000_init);
|
||||
|
||||
void cma3000_exit(struct cma3000_accl_data *data)
|
||||
{
|
||||
free_irq(data->irq, data);
|
||||
input_unregister_device(data->input_dev);
|
||||
kfree(data);
|
||||
}
|
||||
EXPORT_SYMBOL(cma3000_exit);
|
||||
|
||||
MODULE_DESCRIPTION("CMA3000-D0x Accelerometer Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_AUTHOR("Hemanth V <hemanthv@ti.com>");
|
||||
42
drivers/input/misc/cma3000_d0x.h
Normal file
42
drivers/input/misc/cma3000_d0x.h
Normal file
@@ -0,0 +1,42 @@
|
||||
/*
|
||||
* VTI CMA3000_D0x Accelerometer driver
|
||||
*
|
||||
* Copyright (C) 2010 Texas Instruments
|
||||
* Author: Hemanth V <hemanthv@ti.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 as published by
|
||||
* the Free Software Foundation.
|
||||
*
|
||||
* 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, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifndef _INPUT_CMA3000_H
|
||||
#define _INPUT_CMA3000_H
|
||||
|
||||
#include <linux/types.h>
|
||||
#include <linux/input.h>
|
||||
|
||||
struct device;
|
||||
struct cma3000_accl_data;
|
||||
|
||||
struct cma3000_bus_ops {
|
||||
u16 bustype;
|
||||
u8 ctrl_mod;
|
||||
int (*read)(struct device *, u8, char *);
|
||||
int (*write)(struct device *, u8, u8, char *);
|
||||
};
|
||||
|
||||
struct cma3000_accl_data *cma3000_init(struct device *dev, int irq,
|
||||
const struct cma3000_bus_ops *bops);
|
||||
void cma3000_exit(struct cma3000_accl_data *);
|
||||
void cma3000_suspend(struct cma3000_accl_data *);
|
||||
void cma3000_resume(struct cma3000_accl_data *);
|
||||
|
||||
#endif
|
||||
141
drivers/input/misc/cma3000_d0x_i2c.c
Normal file
141
drivers/input/misc/cma3000_d0x_i2c.c
Normal file
@@ -0,0 +1,141 @@
|
||||
/*
|
||||
* Implements I2C interface for VTI CMA300_D0x Accelerometer driver
|
||||
*
|
||||
* Copyright (C) 2010 Texas Instruments
|
||||
* Author: Hemanth V <hemanthv@ti.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 as published by
|
||||
* the Free Software Foundation.
|
||||
*
|
||||
* 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, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/input/cma3000.h>
|
||||
#include "cma3000_d0x.h"
|
||||
|
||||
static int cma3000_i2c_set(struct device *dev,
|
||||
u8 reg, u8 val, char *msg)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
int ret;
|
||||
|
||||
ret = i2c_smbus_write_byte_data(client, reg, val);
|
||||
if (ret < 0)
|
||||
dev_err(&client->dev,
|
||||
"%s failed (%s, %d)\n", __func__, msg, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int cma3000_i2c_read(struct device *dev, u8 reg, char *msg)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
int ret;
|
||||
|
||||
ret = i2c_smbus_read_byte_data(client, reg);
|
||||
if (ret < 0)
|
||||
dev_err(&client->dev,
|
||||
"%s failed (%s, %d)\n", __func__, msg, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static const struct cma3000_bus_ops cma3000_i2c_bops = {
|
||||
.bustype = BUS_I2C,
|
||||
#define CMA3000_BUSI2C (0 << 4)
|
||||
.ctrl_mod = CMA3000_BUSI2C,
|
||||
.read = cma3000_i2c_read,
|
||||
.write = cma3000_i2c_set,
|
||||
};
|
||||
|
||||
static int __devinit cma3000_i2c_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
struct cma3000_accl_data *data;
|
||||
|
||||
data = cma3000_init(&client->dev, client->irq, &cma3000_i2c_bops);
|
||||
if (IS_ERR(data))
|
||||
return PTR_ERR(data);
|
||||
|
||||
i2c_set_clientdata(client, data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __devexit cma3000_i2c_remove(struct i2c_client *client)
|
||||
{
|
||||
struct cma3000_accl_data *data = i2c_get_clientdata(client);
|
||||
|
||||
cma3000_exit(data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
static int cma3000_i2c_suspend(struct device *dev)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct cma3000_accl_data *data = i2c_get_clientdata(client);
|
||||
|
||||
cma3000_suspend(data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cma3000_i2c_resume(struct device *dev)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct cma3000_accl_data *data = i2c_get_clientdata(client);
|
||||
|
||||
cma3000_resume(data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct dev_pm_ops cma3000_i2c_pm_ops = {
|
||||
.suspend = cma3000_i2c_suspend,
|
||||
.resume = cma3000_i2c_resume,
|
||||
};
|
||||
#endif
|
||||
|
||||
static const struct i2c_device_id cma3000_i2c_id[] = {
|
||||
{ "cma3000_d01", 0 },
|
||||
{ },
|
||||
};
|
||||
|
||||
static struct i2c_driver cma3000_i2c_driver = {
|
||||
.probe = cma3000_i2c_probe,
|
||||
.remove = __devexit_p(cma3000_i2c_remove),
|
||||
.id_table = cma3000_i2c_id,
|
||||
.driver = {
|
||||
.name = "cma3000_i2c_accl",
|
||||
.owner = THIS_MODULE,
|
||||
#ifdef CONFIG_PM
|
||||
.pm = &cma3000_i2c_pm_ops,
|
||||
#endif
|
||||
},
|
||||
};
|
||||
|
||||
static int __init cma3000_i2c_init(void)
|
||||
{
|
||||
return i2c_add_driver(&cma3000_i2c_driver);
|
||||
}
|
||||
|
||||
static void __exit cma3000_i2c_exit(void)
|
||||
{
|
||||
i2c_del_driver(&cma3000_i2c_driver);
|
||||
}
|
||||
|
||||
module_init(cma3000_i2c_init);
|
||||
module_exit(cma3000_i2c_exit);
|
||||
|
||||
MODULE_DESCRIPTION("CMA3000-D0x Accelerometer I2C Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_AUTHOR("Hemanth V <hemanthv@ti.com>");
|
||||
Reference in New Issue
Block a user