shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 19:30:30 +09:00
Code Issues Packages Projects Releases Wiki Activity

[xjh] gsensor with debug open

Browse Source
This commit is contained in:
root
2010-12-17 16:23:55 +08:00
parent adc02df134
commit 9d886535b3
6 changed files with 888 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
arch/arm/mach-rk29/board-rk29sdk.c
View File

@@ -338,6 +338,32 @@ struct p1003_platform_data p1003_info = {
};
#endif
/*MMA8452 gsensor*/
#if defined (CONFIG_GS_MMA8452)
#define MMA8452_INT_PIN RK29_PIN0_PA3
int mma8452_init_platform_hw(void)
{
if(gpio_request(MMA8452_INT_PIN,NULL) != 0){
gpio_free(MMA8452_INT_PIN);
printk("mma8452_init_platform_hw gpio_request error\n");
return -EIO;
}
gpio_pull_updown(MMA8452_INT_PIN, 1);
return 0;
}
struct mma8452_platform_data mma8452_info = {
.model= 8452,
.swap_xy = 0,
.init_platform_hw= mma8452_init_platform_hw,
};
#endif
/*****************************************************************************************
* i2c devices
@@ -451,6 +477,16 @@ static struct i2c_board_info __initdata board_i2c0_devices[] = {
///.irq = RK2818_PIN_PA4,
},
#endif
#if defined (CONFIG_GS_MMA8452)
{
.type = "gs_mma8452",
.addr = 0x1c,
.flags = 0,
.irq = MMA8452_INT_PIN,
.platform_data = &mma8452_info,
},
#endif
};
#endif

10
arch/arm/mach-rk29/include/mach/board.h
View File

@@ -131,6 +131,16 @@ struct p1003_platform_data {
void (*exit_platform_hw)(void);
};
struct mma8452_platform_data {
u16 model;
u16 swap_xy;
int (*get_pendown_state)(void);
int (*init_platform_hw)(void);
int (*mma8452_platform_sleep)(void);
int (*mma8452_platform_wakeup)(void);
void (*exit_platform_hw)(void);
};
void __init rk29_map_common_io(void);
void __init rk29_clock_init(void);

9
drivers/input/gsensor/Kconfig
View File

@@ -19,4 +19,13 @@ config GS_MMA7660
To have support for your specific gsesnor you will have to
select the proper drivers which depend on this option.
config GS_MMA8452
bool "gs_mma8452"
depends on G_SENSOR_DEVICE
default y
help
To have support for your specific gsesnor you will have to
select the proper drivers which depend on this option.
endif

1
drivers/input/gsensor/Makefile
View File

@@ -1,3 +1,4 @@
# gsensor drivers
obj-$(CONFIG_GS_MMA7660) += mma7660.o
obj-$(CONFIG_GS_MMA8452) += mma8452.o

696
drivers/input/gsensor/mma8452.c Normal file
View File

@@ -0,0 +1,696 @@
/* drivers/i2c/chips/mma8452.c - mma8452 compass driver
*
* Copyright (C) 2007-2008 HTC Corporation.
* Author: Hou-Kun Chen <houkun.chen@gmail.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*
*/
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/irq.h>
#include <linux/miscdevice.h>
#include <linux/gpio.h>
#include <asm/uaccess.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/workqueue.h>
#include <linux/freezer.h>
#include <linux/mma8452.h>
#include <mach/gpio.h>
#include <mach/board.h>
#ifdef CONFIG_ANDROID_POWER
#include <linux/android_power.h>
#endif
#if 1
#define mmaprintk(x...) printk(x)
#else
#define mmaprintk(x...)
#endif
static int mma8452_probe(struct i2c_client *client, const struct i2c_device_id *id);
#define MMA8452_SPEED 200 * 1000
/* Addresses to scan -- protected by sense_data_mutex */
//static char sense_data[RBUFF_SIZE + 1];
static struct i2c_client *this_client;
static struct miscdevice mma8452_device;
static DECLARE_WAIT_QUEUE_HEAD(data_ready_wq);
#ifdef CONFIG_ANDROID_POWER
static android_early_suspend_t mma8452_early_suspend;
#endif
static int revision = -1;
/* AKM HW info */
static ssize_t gsensor_vendor_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
ssize_t ret = 0;
sprintf(buf, "%#x\n", revision);
ret = strlen(buf) + 1;
return ret;
}
static DEVICE_ATTR(vendor, 0444, gsensor_vendor_show, NULL);
static struct kobject *android_gsensor_kobj;
static int gsensor_sysfs_init(void)
{
int ret ;
android_gsensor_kobj = kobject_create_and_add("android_gsensor", NULL);
if (android_gsensor_kobj == NULL) {
mmaprintk(KERN_ERR
"MMA8452 gsensor_sysfs_init:"\
"subsystem_register failed\n");
ret = -ENOMEM;
goto err;
}
ret = sysfs_create_file(android_gsensor_kobj, &dev_attr_vendor.attr);
if (ret) {
mmaprintk(KERN_ERR
"MMA8452 gsensor_sysfs_init:"\
"sysfs_create_group failed\n");
goto err4;
}
return 0 ;
err4:
kobject_del(android_gsensor_kobj);
err:
return ret ;
}
static int mma8452_rx_data(struct i2c_client *client, char *rxData, int length)
{
int ret = 0;
char reg = rxData[0];
ret = i2c_master_reg8_recv(client, reg, rxData, length, MMA8452_SPEED);
return (ret > 0)? 0 : ret;
}
static int mma8452_tx_data(struct i2c_client *client, char *txData, int length)
{
int ret = 0;
char reg = txData[0];
ret = i2c_master_reg8_send(client, reg, &txData[1], length-1, MMA8452_SPEED);
return (ret > 0)? 0 : ret;
}
static char mma845x_read_reg(struct i2c_client *client,int addr)
{
char tmp;
int ret = 0;
tmp = addr;
ret = mma8452_tx_data(client, &tmp, 1);
ret = mma8452_rx_data(client, &tmp, 1);
return tmp;
}
static int mma845x_write_reg(struct i2c_client *client,int addr,int value)
{
char buffer[3];
int ret = 0;
buffer[0] = addr;
buffer[1] = value;
ret = mma8452_tx_data(client, &buffer[0], 2);
return ret;
}
static char mma8452_get_devid(struct i2c_client *client)
{
mmaprintk("mma8452 devid:%x\n",mma845x_read_reg(client,MMA8452_REG_WHO_AM_I));
return mma845x_read_reg(client,MMA8452_REG_WHO_AM_I);
}
static int mma845x_active(struct i2c_client *client,int enable)
{
int tmp;
int ret = 0;
tmp = mma845x_read_reg(client,MMA8452_REG_CTRL_REG1);
if(enable)
tmp |=ACTIVE_MASK;
else
tmp &=~ACTIVE_MASK;
mmaprintk("mma845x_active %s (0x%x)\n",enable?"active":"standby",tmp);
ret = mma845x_write_reg(client,MMA8452_REG_CTRL_REG1,tmp);
return ret;
}
static int mma8452_start_test(struct i2c_client *client)
{
int ret = 0;
int tmp;
mmaprintk("-------------------------mma8452 start test------------------------\n");
/* standby */
mma845x_active(client,0);
mmaprintk("mma8452 MMA8452_REG_SYSMOD:%x\n",mma845x_read_reg(client,MMA8452_REG_SYSMOD));
/* disable FIFO FMODE = 0*/
ret = mma845x_write_reg(client,MMA8452_REG_F_SETUP,0);
mmaprintk("mma8452 MMA8452_REG_F_SETUP:%x\n",mma845x_read_reg(client,MMA8452_REG_F_SETUP));
/* set full scale range to 2g */
ret = mma845x_write_reg(client,MMA8452_REG_XYZ_DATA_CFG,0);
mmaprintk("mma8452 MMA8452_REG_XYZ_DATA_CFG:%x\n",mma845x_read_reg(client,MMA8452_REG_XYZ_DATA_CFG));
/* set bus 8bit/14bit(FREAD = 1,FMODE = 0) ,data rate*/
tmp = (MMA8452_RATE_12P5<< MMA8452_RATE_SHIFT) | FREAD_MASK;
ret = mma845x_write_reg(client,MMA8452_REG_CTRL_REG1,tmp);
mmaprintk("mma8452 MMA8452_REG_CTRL_REG1:%x\n",mma845x_read_reg(client,MMA8452_REG_CTRL_REG1));
mmaprintk("mma8452 MMA8452_REG_SYSMOD:%x\n",mma845x_read_reg(client,MMA8452_REG_SYSMOD));
ret = mma845x_write_reg(client,MMA8452_REG_CTRL_REG3,5);
mmaprintk("mma8452 MMA8452_REG_CTRL_REG3:%x\n",mma845x_read_reg(client,MMA8452_REG_CTRL_REG3));
ret = mma845x_write_reg(client,MMA8452_REG_CTRL_REG4,1);
mmaprintk("mma8452 MMA8452_REG_CTRL_REG4:%x\n",mma845x_read_reg(client,MMA8452_REG_CTRL_REG4));
ret = mma845x_write_reg(client,MMA8452_REG_CTRL_REG5,1);
mmaprintk("mma8452 MMA8452_REG_CTRL_REG5:%x\n",mma845x_read_reg(client,MMA8452_REG_CTRL_REG5));
mmaprintk("mma8452 MMA8452_REG_SYSMOD:%x\n",mma845x_read_reg(client,MMA8452_REG_SYSMOD));
mma845x_active(client,1);
mmaprintk("mma8452 MMA8452_REG_SYSMOD:%x\n",mma845x_read_reg(client,MMA8452_REG_SYSMOD));
enable_irq(client->irq);
msleep(50);
return ret;
}
static int mma8452_start_dev(struct i2c_client *client, char rate)
{
int ret = 0;
int tmp;
mmaprintk("-------------------------mma8452 start ------------------------\n");
/* standby */
mma845x_active(client,0);
mmaprintk("mma8452 MMA8452_REG_SYSMOD:%x\n",mma845x_read_reg(client,MMA8452_REG_SYSMOD));
/* disable FIFO FMODE = 0*/
ret = mma845x_write_reg(client,MMA8452_REG_F_SETUP,0);
mmaprintk("mma8452 MMA8452_REG_F_SETUP:%x\n",mma845x_read_reg(client,MMA8452_REG_F_SETUP));
/* set full scale range to 2g */
ret = mma845x_write_reg(client,MMA8452_REG_XYZ_DATA_CFG,0);
mmaprintk("mma8452 MMA8452_REG_XYZ_DATA_CFG:%x\n",mma845x_read_reg(client,MMA8452_REG_XYZ_DATA_CFG));
/* set bus 8bit/14bit(FREAD = 1,FMODE = 0) ,data rate*/
tmp = (rate<< MMA8452_RATE_SHIFT) | FREAD_MASK;
ret = mma845x_write_reg(client,MMA8452_REG_CTRL_REG1,tmp);
mmaprintk("mma8452 MMA8452_REG_CTRL_REG1:%x\n",mma845x_read_reg(client,MMA8452_REG_CTRL_REG1));
mmaprintk("mma8452 MMA8452_REG_SYSMOD:%x\n",mma845x_read_reg(client,MMA8452_REG_SYSMOD));
ret = mma845x_write_reg(client,MMA8452_REG_CTRL_REG3,5);
mmaprintk("mma8452 MMA8452_REG_CTRL_REG3:%x\n",mma845x_read_reg(client,MMA8452_REG_CTRL_REG3));
ret = mma845x_write_reg(client,MMA8452_REG_CTRL_REG4,1);
mmaprintk("mma8452 MMA8452_REG_CTRL_REG4:%x\n",mma845x_read_reg(client,MMA8452_REG_CTRL_REG4));
ret = mma845x_write_reg(client,MMA8452_REG_CTRL_REG5,1);
mmaprintk("mma8452 MMA8452_REG_CTRL_REG5:%x\n",mma845x_read_reg(client,MMA8452_REG_CTRL_REG5));
mmaprintk("mma8452 MMA8452_REG_SYSMOD:%x\n",mma845x_read_reg(client,MMA8452_REG_SYSMOD));
mma845x_active(client,1);
mmaprintk("mma8452 MMA8452_REG_SYSMOD:%x\n",mma845x_read_reg(client,MMA8452_REG_SYSMOD));
enable_irq(client->irq);
return ret;
}
static int mma8452_start(struct i2c_client *client, char rate)
{
struct mma8452_data *mma8452 = (struct mma8452_data *)i2c_get_clientdata(client);
if (mma8452->status == MMA8452_OPEN) {
return 0;
}
mma8452->status = MMA8452_OPEN;
return mma8452_start_dev(client, rate);
}
static int mma8452_close_dev(struct i2c_client *client)
{
disable_irq_nosync(client->irq);
return mma845x_active(client,0);
}
static int mma8452_close(struct i2c_client *client)
{
struct mma8452_data *mma8452 = (struct mma8452_data *)i2c_get_clientdata(client);
mma8452->status = MMA8452_CLOSE;
return mma8452_close_dev(client);
}
static int mma8452_reset_rate(struct i2c_client *client, char rate)
{
int ret = 0;
mmaprintk("\n----------------------------mma8452_reset_rate------------------------\n");
ret = mma8452_close_dev(client);
ret = mma8452_start_dev(client, rate);
return ret ;
}
static inline int mma8452_convert_to_int(char value)
{
int result;
if (value < MMA8452_BOUNDARY) {
result = value * MMA8452_GRAVITY_STEP;
} else {
result = ~(((~value & 0x7f) + 1)* MMA8452_GRAVITY_STEP) + 1;
}
return result;
}
static void mma8452_report_value(struct i2c_client *client, struct mma8452_axis *axis)
{
struct mma8452_data *mma8452 = i2c_get_clientdata(client);
//struct mma8452_axis *axis = (struct mma8452_axis *)rbuf;
/* Report acceleration sensor information */
input_report_abs(mma8452->input_dev, ABS_X, axis->x);
input_report_abs(mma8452->input_dev, ABS_Y, axis->y);
input_report_abs(mma8452->input_dev, ABS_Z, axis->z);
input_sync(mma8452->input_dev);
mmaprintk("Gsensor x==%d y==%d z==%d\n",axis->x,axis->y,axis->z);
}
static int mma8452_get_data(struct i2c_client *client)
{
char buffer[6];
int ret;
struct mma8452_axis axis;
struct mma8452_platform_data *pdata = pdata = client->dev.platform_data;
do {
memset(buffer, 0, 3);
buffer[0] = MMA8452_REG_X_OUT_MSB;
ret = mma8452_tx_data(client, &buffer[0], 1);
ret = mma8452_rx_data(client, &buffer[0], 3);
if (ret < 0)
return ret;
} while (0);
mmaprintk("0x%02x 0x%02x 0x%02x \n",buffer[0],buffer[1],buffer[2]);
axis.x = mma8452_convert_to_int(buffer[0]);
axis.y = mma8452_convert_to_int(buffer[1]);
axis.z = mma8452_convert_to_int(buffer[2]);
if(pdata->swap_xy)
{
axis.y = -axis.y;
swap(axis.x,axis.y);
}
// mmaprintk( "%s: ------------------mma8452_GetData axis = %d %d %d--------------\n",
// __func__, axis.x, axis.y, axis.z);
//memcpy(sense_data, &axis, sizeof(axis));
mma8452_report_value(client, &axis);
//atomic_set(&data_ready, 0);
//wake_up(&data_ready_wq);
return 0;
}
/*
static int mma8452_trans_buff(char *rbuf, int size)
{
//wait_event_interruptible_timeout(data_ready_wq,
// atomic_read(&data_ready), 1000);
wait_event_interruptible(data_ready_wq,
atomic_read(&data_ready));
atomic_set(&data_ready, 0);
memcpy(rbuf, &sense_data[0], size);
return 0;
}
*/
static int mma8452_open(struct inode *inode, struct file *file)
{
return 0;//nonseekable_open(inode, file);
}
static int mma8452_release(struct inode *inode, struct file *file)
{
return 0;
}
static int mma8452_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
{
void __user *argp = (void __user *)arg;
char msg[RBUFF_SIZE + 1];
int ret = -1;
char rate;
struct i2c_client *client = container_of(mma8452_device.parent, struct i2c_client, dev);
switch (cmd) {
case ECS_IOCTL_APP_SET_RATE:
if (copy_from_user(&rate, argp, sizeof(rate)))
return -EFAULT;
break;
default:
break;
}
switch (cmd) {
case ECS_IOCTL_START:
ret = mma8452_start(client, MMA8452_RATE_12P5);
if (ret < 0)
return ret;
break;
case ECS_IOCTL_CLOSE:
ret = mma8452_close(client);
if (ret < 0)
return ret;
break;
case ECS_IOCTL_APP_SET_RATE:
ret = mma8452_reset_rate(client, rate);
if (ret < 0)
return ret;
break;
/*
case ECS_IOCTL_GETDATA:
ret = mma8452_trans_buff(msg, RBUFF_SIZE);
if (ret < 0)
return ret;
break;
*/
default:
return -ENOTTY;
}
switch (cmd) {
case ECS_IOCTL_GETDATA:
if (copy_to_user(argp, &msg, sizeof(msg)))
return -EFAULT;
break;
default:
break;
}
return 0;
}
static void mma8452_work_func(struct work_struct *work)
{
struct mma8452_data *mma8452 = container_of(work, struct mma8452_data, work);
struct i2c_client *client = mma8452->client;
if (mma8452_get_data(client) < 0)
mmaprintk(KERN_ERR "MMA8452 mma_work_func: Get data failed\n");
enable_irq(client->irq);
}
static void mma8452_delaywork_func(struct work_struct *work)
{
struct delayed_work *delaywork = container_of(work, struct delayed_work, work);
struct mma8452_data *mma8452 = container_of(delaywork, struct mma8452_data, delaywork);
struct i2c_client *client = mma8452->client;
if (mma8452_get_data(client) < 0)
mmaprintk(KERN_ERR "MMA8452 mma_work_func: Get data failed\n");
mmaprintk("%s :int src:0x%02x\n",__FUNCTION__,mma845x_read_reg(mma8452->client,MMA8452_REG_INTSRC));
enable_irq(client->irq);
}
static irqreturn_t mma8452_interrupt(int irq, void *dev_id)
{
struct mma8452_data *mma8452 = (struct mma8452_data *)dev_id;
disable_irq_nosync(irq);
schedule_delayed_work(&mma8452->delaywork, msecs_to_jiffies(30));
mmaprintk("%s :enter\n",__FUNCTION__);
return IRQ_HANDLED;
}
static struct file_operations mma8452_fops = {
.owner = THIS_MODULE,
.open = mma8452_open,
.release = mma8452_release,
.ioctl = mma8452_ioctl,
};
static struct miscdevice mma8452_device = {
.minor = MISC_DYNAMIC_MINOR,
.name = "mma8452_daemon",//"mma8452_daemon",
.fops = &mma8452_fops,
};
static int mma8452_remove(struct i2c_client *client)
{
struct mma8452_data *mma8452 = i2c_get_clientdata(client);
misc_deregister(&mma8452_device);
input_unregister_device(mma8452->input_dev);
input_free_device(mma8452->input_dev);
free_irq(client->irq, mma8452);
kfree(mma8452);
#ifdef CONFIG_ANDROID_POWER
android_unregister_early_suspend(&mma8452_early_suspend);
#endif
this_client = NULL;
return 0;
}
#ifdef CONFIG_ANDROID_POWER
static int mma8452_suspend(android_early_suspend_t *h)
{
struct i2c_client *client = container_of(mma8452_device.parent, struct i2c_client, dev);
mmaprintk("Gsensor mma7760 enter suspend\n");
return mma8452_close_dev(client);
}
static int mma8452_resume(android_early_suspend_t *h)
{
struct i2c_client *client = container_of(mma8452_device.parent, struct i2c_client, dev);
struct mma8452_data *mma8452 = (struct mma8452_data *)i2c_get_clientdata(client);
mmaprintk("Gsensor mma7760 resume!!\n");
return mma8452_start_dev(mma8452->curr_tate);
}
#else
static int mma8452_suspend(struct i2c_client *client, pm_message_t mesg)
{
mmaprintk("Gsensor mma7760 enter 2 level suspend\n");
return mma8452_close_dev(client);
}
static int mma8452_resume(struct i2c_client *client)
{
struct mma8452_data *mma8452 = (struct mma8452_data *)i2c_get_clientdata(client);
mmaprintk("Gsensor mma7760 2 level resume!!\n");
return mma8452_start_dev(client, mma8452->curr_tate);
}
#endif
static const struct i2c_device_id mma8452_id[] = {
{"gs_mma8452", 0},
{ }
};
static struct i2c_driver mma8452_driver = {
.driver = {
.name = "gs_mma8452",
},
.id_table = mma8452_id,
.probe = mma8452_probe,
.remove = __devexit_p(mma8452_remove),
#ifndef CONFIG_ANDROID_POWER
.suspend = &mma8452_suspend,
.resume = &mma8452_resume,
#endif
};
static int mma8452_init_client(struct i2c_client *client)
{
struct mma8452_data *mma8452;
int ret;
mma8452 = i2c_get_clientdata(client);
mmaprintk("gpio_to_irq(%d) is %d\n",client->irq,gpio_to_irq(client->irq));
if ( !gpio_is_valid(client->irq)) {
mmaprintk("+++++++++++gpio_is_invalid\n");
return -EINVAL;
}
ret = gpio_request(client->irq, "mma8452_int");
if (ret) {
mmaprintk( "failed to request mma7990_trig GPIO%d\n",gpio_to_irq(client->irq));
return ret;
}
ret = gpio_direction_input(client->irq);
if (ret) {
mmaprintk("failed to set mma7990_trig GPIO gpio input\n");
return ret;
}
gpio_pull_updown(client->irq, GPIOPullUp);
client->irq = gpio_to_irq(client->irq);
ret = request_irq(client->irq, mma8452_interrupt, IRQF_TRIGGER_LOW, client->dev.driver->name, mma8452);
mmaprintk("request irq is %d,ret is 0x%x\n",client->irq,ret);
if (ret ) {
mmaprintk(KERN_ERR "mma8452_init_client: request irq failed,ret is %d\n",ret);
return ret;
}
disable_irq(client->irq);
init_waitqueue_head(&data_ready_wq);
return 0;
}
static int mma8452_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct mma8452_data *mma8452;
struct mma8452_platform_data *pdata = pdata = client->dev.platform_data;
int err;
mmaprintk("%s enter\n",__FUNCTION__);
mma8452 = kzalloc(sizeof(struct mma8452_data), GFP_KERNEL);
if (!mma8452) {
mmaprintk("[mma8452]:alloc data failed.\n");
err = -ENOMEM;
goto exit_alloc_data_failed;
}
INIT_WORK(&mma8452->work, mma8452_work_func);
INIT_DELAYED_WORK(&mma8452->delaywork, mma8452_delaywork_func);
mma8452->client = client;
i2c_set_clientdata(client, mma8452);
this_client = client;
err = mma8452_init_client(client);
if (err < 0) {
mmaprintk(KERN_ERR
"mma8452_probe: mma8452_init_client failed\n");
goto exit_request_gpio_irq_failed;
}
mma8452->input_dev = input_allocate_device();
if (!mma8452->input_dev) {
err = -ENOMEM;
mmaprintk(KERN_ERR
"mma8452_probe: Failed to allocate input device\n");
goto exit_input_allocate_device_failed;
}
set_bit(EV_ABS, mma8452->input_dev->evbit);
/* x-axis acceleration */
input_set_abs_params(mma8452->input_dev, ABS_X, -20000, 20000, 0, 0); //2g full scale range
/* y-axis acceleration */
input_set_abs_params(mma8452->input_dev, ABS_Y, -20000, 20000, 0, 0); //2g full scale range
/* z-axis acceleration */
input_set_abs_params(mma8452->input_dev, ABS_Z, -20000, 20000, 0, 0); //2g full scale range
mma8452->input_dev->name = "compass";
mma8452->input_dev->dev.parent = &client->dev;
err = input_register_device(mma8452->input_dev);
if (err < 0) {
mmaprintk(KERN_ERR
"mma8452_probe: Unable to register input device: %s\n",
mma8452->input_dev->name);
goto exit_input_register_device_failed;
}
mma8452_device.parent = &client->dev;
err = misc_register(&mma8452_device);
if (err < 0) {
mmaprintk(KERN_ERR
"mma8452_probe: mmad_device register failed\n");
goto exit_misc_device_register_mma8452_device_failed;
}
err = gsensor_sysfs_init();
if (err < 0) {
mmaprintk(KERN_ERR
"mma8452_probe: gsensor sysfs init failed\n");
goto exit_gsensor_sysfs_init_failed;
}
#ifdef CONFIG_ANDROID_POWER
mma8452_early_suspend.suspend = mma8452_suspend;
mma8452_early_suspend.resume = mma8452_resume;
mma8452_early_suspend.level = 0x2;
android_register_early_suspend(&mma8452_early_suspend);
#endif
mma8452_get_devid(this_client);
mmaprintk(KERN_INFO "mma8452 probe ok\n");
mma8452->status = -1;
#if 1
// mma8452_start_test(this_client);
mma8452_start(client, MMA8452_RATE_12P5);
#endif
return 0;
exit_gsensor_sysfs_init_failed:
misc_deregister(&mma8452_device);
exit_misc_device_register_mma8452_device_failed:
input_unregister_device(mma8452->input_dev);
exit_input_register_device_failed:
input_free_device(mma8452->input_dev);
exit_input_allocate_device_failed:
free_irq(client->irq, mma8452);
exit_request_gpio_irq_failed:
kfree(mma8452);
exit_alloc_data_failed:
;
mmaprintk("%s error\n",__FUNCTION__);
return err;
}
static int __init mma8452_i2c_init(void)
{
return i2c_add_driver(&mma8452_driver);
}
static void __exit mma8452_i2c_exit(void)
{
i2c_del_driver(&mma8452_driver);
}
module_init(mma8452_i2c_init);
module_exit(mma8452_i2c_exit);

136
include/linux/mma8452.h Normal file
View File

@@ -0,0 +1,136 @@
/*
* Definitions for mma8452 compass chip.
*/
#ifndef MMA8452_H
#define MMA8452_H
#include <linux/ioctl.h>
/* Default register settings */
#define RBUFF_SIZE 12 /* Rx buffer size */
#define MMA8452_REG_STATUS 0x0 //RO
#define MMA8452_REG_X_OUT_MSB 0x1 //RO
#define MMA8452_REG_X_OUT_LSB 0x2 //RO
#define MMA8452_REG_Y_OUT_MSB 0x3 //RO
#define MMA8452_REG_Y_OUT_LSB 0x4 //RO
#define MMA8452_REG_Z_OUT_MSB 0x5 //RO
#define MMA8452_REG_Z_OUT_LSB 0x6 //RO
#define MMA8452_REG_F_SETUP 0x9 //RW
#define MMA8452_REG_SYSMOD 0xB //RO
#define MMA8452_REG_INTSRC 0xC //RO
#define MMA8452_REG_WHO_AM_I 0xD //RO
#define MMA8452_REG_XYZ_DATA_CFG 0xE //RW
#define MMA8452_REG_HP_FILTER_CUTOFF 0xF //RW
#define MMA8452_REG_PL_STATUS 0x10 //RO
#define MMA8452_REG_PL_CFG 0x11 //RW
#define MMA8452_REG_PL_COUNT 0x12 //RW
#define MMA8452_REG_PL_BF_ZCOMP 0x13 //RW
#define MMA8452_REG_P_L_THS_REG 0x14 //RW
#define MMA8452_REG_FF_MT_CFG 0x15 //RW
#define MMA8452_REG_FF_MT_SRC 0x16 //RO
#define MMA8452_REG_FF_MT_THS 0x17 //RW
#define MMA8452_REG_FF_MT_COUNT 0x18 //RW
#define MMA8452_REG_TRANSIENT_CFG 0x1D //RW
#define MMA8452_REG_TRANSIENT_SRC 0x1E //RO
#define MMA8452_REG_TRANSIENT_THS 0x1F //RW
#define MMA8452_REG_TRANSIENT_COUNT 0x20 //RW
#define MMA8452_REG_PULSE_CFG 0x21 //RW
#define MMA8452_REG_PULSE_SRC 0x22 //RO
#define MMA8452_REG_PULSE_THSX 0x23 //RW
#define MMA8452_REG_PULSE_THSY 0x24 //RW
#define MMA8452_REG_PULSE_THSZ 0x25 //RW
#define MMA8452_REG_PULSE_TMLT 0x26 //RW
#define MMA8452_REG_PULSE_LTCY 0x27 //RW
#define MMA8452_REG_PULSE_WIND 0x28 //RW
#define MMA8452_REG_ASLP_COUNT 0x29 //RW
#define MMA8452_REG_CTRL_REG1 0x2A //RW
#define MMA8452_REG_CTRL_REG2 0x2B //RW
#define MMA8452_REG_CTRL_REG3 0x2C //RW
#define MMA8452_REG_CTRL_REG4 0x2D //RW
#define MMA8452_REG_CTRL_REG5 0x2E //RW
#define MMA8452_REG_OFF_X 0x2F //RW
#define MMA8452_REG_OFF_Y 0x30 //RW
#define MMA8452_REG_OFF_Z 0x31 //RW
#define MMAIO 0xA1
/* IOCTLs for MMA8452 library */
#define ECS_IOCTL_INIT _IO(MMAIO, 0x01)
#define ECS_IOCTL_RESET _IO(MMAIO, 0x04)
#define ECS_IOCTL_CLOSE _IO(MMAIO, 0x02)
#define ECS_IOCTL_START _IO(MMAIO, 0x03)
#define ECS_IOCTL_GETDATA _IOR(MMAIO, 0x08, char[RBUFF_SIZE+1])
/* IOCTLs for APPs */
#define ECS_IOCTL_APP_SET_RATE _IOW(MMAIO, 0x10, char)
/*rate*/
#define MMA8452_RATE_800 0
#define MMA8452_RATE_400 1
#define MMA8452_RATE_200 2
#define MMA8452_RATE_100 3
#define MMA8452_RATE_50 4
#define MMA8452_RATE_12P5 5
#define MMA8452_RATE_6P25 6
#define MMA8452_RATE_1P56 7
#define MMA8452_RATE_SHIFT 3
#define MMA8452_ASLP_RATE_50 0
#define MMA8452_ASLP_RATE_12P5 1
#define MMA8452_ASLP_RATE_6P25 2
#define MMA8452_ASLP_RATE_1P56 3
#define MMA8452_ASLP_RATE_SHIFT 6
#define ACTIVE_MASK 1
#define FREAD_MASK 2
/*status*/
#define MMA8452_OPEN 1
#define MMA8452_CLOSE 0
//#define MMA8452_IIC_ADDR 0x98
#define MMA8452_REG_LEN 11
#define MMA8452_GRAVITY_STEP 156 //2g full scale range
#define MMA8452_PRECISION 8 //8bit data
#define MMA8452_BOUNDARY (0x1 << (MMA8452_PRECISION - 1))
#define MMA8452_TOTAL_TIME 10
/*
struct mma8452_platform_data {
int reset;
int clk_on;
int intr;
};
*/
struct mma8452_data {
char status;
char curr_tate;
struct input_dev *input_dev;
struct i2c_client *client;
struct work_struct work;
struct delayed_work delaywork; /*report second event*/
};
struct mma8452_axis {
int x;
int y;
int z;
};
#define GSENSOR_DEV_PATH "/dev/mma8452_daemon"
#endif