diff options
Diffstat (limited to 'drivers/sensorhub/factory/pressure_bmp182.c')
| -rw-r--r-- | drivers/sensorhub/factory/pressure_bmp182.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/drivers/sensorhub/factory/pressure_bmp182.c b/drivers/sensorhub/factory/pressure_bmp182.c new file mode 100644 index 0000000..b3d580a --- /dev/null +++ b/drivers/sensorhub/factory/pressure_bmp182.c @@ -0,0 +1,190 @@ +/* + * 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; + } + + 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) +{ + struct device *pressure_device = NULL; + + sensors_register(pressure_device, data, pressure_attrs, + "barometer_sensor"); +} |