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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"
/*************************************************************************/
/* factory Sysfs */
/*************************************************************************/
#define VENDOR "AKM"
#define CHIP_ID "AK8963C"
#define GYROSCOPE_DATA_SPEC_MIN -6500
#define GYROSCOPE_DATA_SPEC_MAX 6500
#define GYROSCOPE_SELFTEST_X_SPEC_MIN -200
#define GYROSCOPE_SELFTEST_X_SPEC_MAX 200
#define GYROSCOPE_SELFTEST_Y_SPEC_MIN -200
#define GYROSCOPE_SELFTEST_Y_SPEC_MAX 200
#define GYROSCOPE_SELFTEST_Z_SPEC_MIN -3200
#define GYROSCOPE_SELFTEST_Z_SPEC_MAX -800
static ssize_t magnetic_vendor_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%s\n", VENDOR);
}
static ssize_t magnetic_name_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%s\n", CHIP_ID);
}
static ssize_t raw_data_read(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ssp_data *data = dev_get_drvdata(dev);
return snprintf(buf, PAGE_SIZE, "%d,%d,%d\n",
data->buf[GEOMAGNETIC_SENSOR].x,
data->buf[GEOMAGNETIC_SENSOR].y,
data->buf[GEOMAGNETIC_SENSOR].z);
}
static int check_data_spec(struct ssp_data *data)
{
if ((data->buf[GEOMAGNETIC_SENSOR].x == 0) &&
(data->buf[GEOMAGNETIC_SENSOR].y == 0) &&
(data->buf[GEOMAGNETIC_SENSOR].z == 0))
return FAIL;
else if ((data->buf[GEOMAGNETIC_SENSOR].x > GYROSCOPE_DATA_SPEC_MAX) ||
(data->buf[GEOMAGNETIC_SENSOR].x < GYROSCOPE_DATA_SPEC_MIN) ||
(data->buf[GEOMAGNETIC_SENSOR].y > GYROSCOPE_DATA_SPEC_MAX) ||
(data->buf[GEOMAGNETIC_SENSOR].y < GYROSCOPE_DATA_SPEC_MIN) ||
(data->buf[GEOMAGNETIC_SENSOR].z > GYROSCOPE_DATA_SPEC_MAX) ||
(data->buf[GEOMAGNETIC_SENSOR].z < GYROSCOPE_DATA_SPEC_MIN))
return FAIL;
else
return SUCCESS;
}
static ssize_t adc_data_read(struct device *dev,
struct device_attribute *attr, char *buf)
{
bool bSuccess = false;
u8 chTempbuf[2] = {1, 20};
s16 iSensorBuf[3] = {0, };
int iRetries = 20;
struct ssp_data *data = dev_get_drvdata(dev);
data->buf[GEOMAGNETIC_SENSOR].x = 0;
data->buf[GEOMAGNETIC_SENSOR].y = 0;
data->buf[GEOMAGNETIC_SENSOR].z = 0;
if (!(atomic_read(&data->aSensorEnable) & (1 << GEOMAGNETIC_SENSOR)))
send_instruction(data, ADD_SENSOR, GEOMAGNETIC_SENSOR,
chTempbuf, 2);
do {
msleep(50);
if (check_data_spec(data) == SUCCESS)
break;
} while (--iRetries);
if (iRetries > 0)
bSuccess = true;
iSensorBuf[0] = data->buf[GEOMAGNETIC_SENSOR].x;
iSensorBuf[1] = data->buf[GEOMAGNETIC_SENSOR].y;
iSensorBuf[2] = data->buf[GEOMAGNETIC_SENSOR].z;
if (!(atomic_read(&data->aSensorEnable) & (1 << GEOMAGNETIC_SENSOR)))
send_instruction(data, REMOVE_SENSOR, GEOMAGNETIC_SENSOR,
chTempbuf, 2);
pr_info("[SSP]: %s - x = %d, y = %d, z = %d\n", __func__,
iSensorBuf[0], iSensorBuf[1], iSensorBuf[2]);
return sprintf(buf, "%s,%d,%d,%d\n", (bSuccess ? "OK" : "NG"),
iSensorBuf[0], iSensorBuf[1], iSensorBuf[2]);
}
static ssize_t magnetic_get_asa(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ssp_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%d,%d,%d\n", (s16)data->uFuseRomData[0],
(s16)data->uFuseRomData[1], (s16)data->uFuseRomData[2]);
}
static ssize_t magnetic_get_status(struct device *dev,
struct device_attribute *attr, char *buf)
{
bool bSuccess;
struct ssp_data *data = dev_get_drvdata(dev);
if ((data->uFuseRomData[0] == 0) ||
(data->uFuseRomData[0] == 0xff) ||
(data->uFuseRomData[1] == 0) ||
(data->uFuseRomData[1] == 0xff) ||
(data->uFuseRomData[2] == 0) ||
(data->uFuseRomData[2] == 0xff))
bSuccess = false;
else
bSuccess = true;
return sprintf(buf, "%s,%u\n", (bSuccess ? "OK" : "NG"), bSuccess);
}
static ssize_t magnetic_get_selftest(struct device *dev,
struct device_attribute *attr, char *buf)
{
bool bSelftestPassed = false;
char chTempBuf[2] = { 0, 10 };
s16 iSF_X = 0, iSF_Y = 0, iSF_Z = 0;
int iDelayCnt = 0, iRet = 0, iTimeoutReties = 0, iSpecOutReties = 0;
struct ssp_data *data = dev_get_drvdata(dev);
reties:
iDelayCnt = 0;
data->uFactorydataReady = 0;
memset(data->uFactorydata, 0, sizeof(char) * FACTORY_DATA_MAX);
iRet = send_instruction(data, FACTORY_MODE, GEOMAGNETIC_FACTORY,
chTempBuf, 2);
while (!(data->uFactorydataReady & (1 << GEOMAGNETIC_FACTORY))
&& (iDelayCnt++ < 50)
&& (iRet == SUCCESS))
msleep(20);
if ((iDelayCnt >= 50) || (iRet != SUCCESS)) {
pr_err("[SSP]: %s - Magnetic Selftest Timeout!! %d\n",
__func__, iRet);
if (iTimeoutReties++ < 3)
goto reties;
else
goto exit;
}
mdelay(5);
iSF_X = (s16)((data->uFactorydata[0] << 8) + data->uFactorydata[1]);
iSF_Y = (s16)((data->uFactorydata[2] << 8) + data->uFactorydata[3]);
iSF_Z = (s16)((data->uFactorydata[4] << 8) + data->uFactorydata[5]);
iSF_X = (s16)(((int)iSF_X * ((int)data->uFuseRomData[0] + 128)) >> 8);
iSF_Y = (s16)(((int)iSF_Y * ((int)data->uFuseRomData[1] + 128)) >> 8);
iSF_Z = (s16)(((int)iSF_Z * ((int)data->uFuseRomData[2] + 128)) >> 8);
pr_info("[SSP] %s: self test x = %d, y = %d, z = %d\n",
__func__, iSF_X, iSF_Y, iSF_Z);
if ((iSF_X >= GYROSCOPE_SELFTEST_X_SPEC_MIN)
&& (iSF_X <= GYROSCOPE_SELFTEST_X_SPEC_MAX))
pr_info("[SSP] x passed self test, expect -200<=x<=200\n");
else
pr_info("[SSP] x failed self test, expect -200<=x<=200\n");
if ((iSF_Y >= GYROSCOPE_SELFTEST_Y_SPEC_MIN)
&& (iSF_Y <= GYROSCOPE_SELFTEST_Y_SPEC_MAX))
pr_info("[SSP] y passed self test, expect -200<=y<=200\n");
else
pr_info("[SSP] y failed self test, expect -200<=y<=200\n");
if ((iSF_Z >= GYROSCOPE_SELFTEST_Z_SPEC_MIN)
&& (iSF_Z <= GYROSCOPE_SELFTEST_Z_SPEC_MAX))
pr_info("[SSP] z passed self test, expect -3200<=z<=-800\n");
else
pr_info("[SSP] z failed self test, expect -3200<=z<=-800\n");
if ((iSF_X >= GYROSCOPE_SELFTEST_X_SPEC_MIN)
&& (iSF_X <= GYROSCOPE_SELFTEST_X_SPEC_MAX)
&& (iSF_Y >= GYROSCOPE_SELFTEST_Y_SPEC_MIN)
&& (iSF_Y <= GYROSCOPE_SELFTEST_Y_SPEC_MAX)
&& (iSF_Z >= GYROSCOPE_SELFTEST_Z_SPEC_MIN)
&& (iSF_Z <= GYROSCOPE_SELFTEST_Z_SPEC_MAX))
bSelftestPassed = true;
if ((bSelftestPassed == false) && (iSpecOutReties++ < 5))
goto reties;
exit:
return sprintf(buf, "%u,%d,%d,%d\n",
bSelftestPassed, iSF_X, iSF_Y, iSF_Z);
}
static ssize_t magnetic_check_registers(struct device *dev,
struct device_attribute *attr, char *buf)
{
u8 uBuf[13] = {0,};
return sprintf(buf, "%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u\n",
uBuf[0], uBuf[1], uBuf[2], uBuf[3], uBuf[4], uBuf[5],
uBuf[6], uBuf[7], uBuf[8], uBuf[9], uBuf[10], uBuf[11],
uBuf[12]);
}
static ssize_t magnetic_check_cntl(struct device *dev,
struct device_attribute *attr, char *strbuf)
{
bool bSuccess = false;
return sprintf(strbuf, "%s,%d,%d,%d\n",
(!bSuccess ? "OK" : "NG"), 0, 0, 0);
}
static DEVICE_ATTR(name, S_IRUGO, magnetic_name_show, NULL);
static DEVICE_ATTR(vendor, S_IRUGO, magnetic_vendor_show, NULL);
static DEVICE_ATTR(raw_data, S_IRUGO, raw_data_read, NULL);
static DEVICE_ATTR(status, S_IRUGO, magnetic_get_status, NULL);
static DEVICE_ATTR(adc, S_IRUGO, adc_data_read, NULL);
static DEVICE_ATTR(dac, S_IRUGO, magnetic_check_cntl, NULL);
static DEVICE_ATTR(selftest, S_IRUGO, magnetic_get_selftest, NULL);
static DEVICE_ATTR(ak8963_asa, S_IRUGO, magnetic_get_asa, NULL);
static DEVICE_ATTR(ak8963_chk_registers, S_IRUGO,
magnetic_check_registers, NULL);
static struct device_attribute *mag_attrs[] = {
&dev_attr_name,
&dev_attr_vendor,
&dev_attr_adc,
&dev_attr_raw_data,
&dev_attr_status,
&dev_attr_selftest,
&dev_attr_ak8963_asa,
&dev_attr_ak8963_chk_registers,
&dev_attr_dac,
NULL,
};
void initialize_magnetic_factorytest(struct ssp_data *data)
{
sensors_register(data->mag_device, data, mag_attrs, "magnetic_sensor");
}
void remove_magnetic_factorytest(struct ssp_data *data)
{
sensors_unregister(data->mag_device, mag_attrs);
}
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