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/*
* Copyright (C) 2012, Samsung Electronics Co. Ltd. All Rights Reserved.
*
* 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.
*
*/
#include "ssp.h"
#define VENDOR "BOSCH"
#define CHIP_ID "BMP180"
#define CALIBRATION_FILE_PATH "/efs/FactoryApp/baro_delta"
#define PR_ABS_MAX 8388607 /* 24 bit 2'compl */
#define PR_ABS_MIN -8388608
/*************************************************************************/
/* factory Sysfs */
/*************************************************************************/
static ssize_t sea_level_pressure_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct ssp_data *data = dev_get_drvdata(dev);
int iNewSeaLevelPressure;
sscanf(buf, "%d", &iNewSeaLevelPressure);
if (iNewSeaLevelPressure == 0) {
pr_info("%s, our->temperature = 0\n", __func__);
iNewSeaLevelPressure = -1;
}
input_report_rel(data->pressure_input_dev, REL_DIAL,
iNewSeaLevelPressure);
input_sync(data->pressure_input_dev);
return size;
}
int pressure_open_calibration(struct ssp_data *data)
{
char chBuf[10] = {0,};
int iErr = 0;
mm_segment_t old_fs;
struct file *cal_filp = NULL;
old_fs = get_fs();
set_fs(KERNEL_DS);
cal_filp = filp_open(CALIBRATION_FILE_PATH, O_RDONLY, 0666);
if (IS_ERR(cal_filp)) {
iErr = PTR_ERR(cal_filp);
if (iErr != -ENOENT)
pr_err("[SSP]: %s - Can't open calibration file(%d)\n",
__func__, iErr);
set_fs(old_fs);
return iErr;
}
iErr = cal_filp->f_op->read(cal_filp,
chBuf, 10 * sizeof(char), &cal_filp->f_pos);
if (iErr < 0) {
pr_err("[SSP]: %s - Can't read the cal data from file (%d)\n",
__func__, iErr);
return iErr;
}
filp_close(cal_filp, current->files);
set_fs(old_fs);
iErr = kstrtoint(chBuf, 10, &data->iPressureCal);
if (iErr < 0) {
pr_err("[SSP]: %s - kstrtoint failed. %d", __func__, iErr);
return iErr;
}
ssp_dbg("[SSP]: open barometer calibration %d\n", data->iPressureCal);
if (data->iPressureCal < PR_ABS_MIN || data->iPressureCal > PR_ABS_MAX)
pr_err("[SSP]: %s - wrong offset value!!!\n", __func__);
return iErr;
}
static ssize_t pressure_cabratioin_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct ssp_data *data = dev_get_drvdata(dev);
int iPressureCal = 0, iErr = 0;
iErr = kstrtoint(buf, 10, &iPressureCal);
if (iErr < 0) {
pr_err("[SSP]: %s - kstrtoint failed.(%d)", __func__, iErr);
return iErr;
}
if (iPressureCal < PR_ABS_MIN || iPressureCal > PR_ABS_MAX)
return -EINVAL;
data->iPressureCal = (s32)iPressureCal;
return size;
}
static ssize_t pressure_cabratioin_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ssp_data *data = dev_get_drvdata(dev);
pressure_open_calibration(data);
return sprintf(buf, "%d\n", data->iPressureCal);
}
static ssize_t eeprom_check_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
bool bSuccess = false;
char chTempBuf[2] = {0, 10};
int iRet, iDelayCnt = 0;
struct ssp_data *data = dev_get_drvdata(dev);
data->uFactorydataReady = 0;
memset(data->uFactorydata, 0, sizeof(char) * FACTORY_DATA_MAX);
iRet = send_instruction(data, FACTORY_MODE, PRESSURE_FACTORY,
chTempBuf, 2);
while (!(data->uFactorydataReady & (1 << PRESSURE_FACTORY))
&& (iDelayCnt++ < 150)
&& (iRet == SUCCESS))
msleep(20);
if ((iDelayCnt >= 150) || (iRet != SUCCESS)) {
pr_err("[SSP]: %s - Pressure Selftest Timeout!!\n",
__func__);
goto exit;
}
mdelay(5);
bSuccess = (bool)(!!data->uFactorydata[0]);
ssp_dbg("[SSP]: %s - %u\n", __func__, bSuccess);
exit:
return snprintf(buf, PAGE_SIZE, "%d", bSuccess);
}
/* sysfs for vendor & name */
static ssize_t pressure_vendor_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%s\n", VENDOR);
}
static ssize_t pressure_name_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%s\n", CHIP_ID);
}
static DEVICE_ATTR(vendor, S_IRUGO, pressure_vendor_show, NULL);
static DEVICE_ATTR(name, S_IRUGO, pressure_name_show, NULL);
static DEVICE_ATTR(eeprom_check, S_IRUGO, eeprom_check_show, NULL);
static DEVICE_ATTR(calibration, S_IRUGO | S_IWUSR | S_IWGRP,
pressure_cabratioin_show, pressure_cabratioin_store);
static DEVICE_ATTR(sea_level_pressure, S_IRUGO | S_IWUSR | S_IWGRP,
NULL, sea_level_pressure_store);
static struct device_attribute *pressure_attrs[] = {
&dev_attr_vendor,
&dev_attr_name,
&dev_attr_calibration,
&dev_attr_sea_level_pressure,
&dev_attr_eeprom_check,
NULL,
};
void initialize_pressure_factorytest(struct ssp_data *data)
{
sensors_register(data->prs_device, data, pressure_attrs,
"barometer_sensor");
}
void remove_pressure_factorytest(struct ssp_data *data)
{
sensors_unregister(data->prs_device, pressure_attrs);
}
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