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Diffstat (limited to 'drivers/misc/inv_mpu/pressure/bma085.c')
-rw-r--r--drivers/misc/inv_mpu/pressure/bma085.c367
1 files changed, 0 insertions, 367 deletions
diff --git a/drivers/misc/inv_mpu/pressure/bma085.c b/drivers/misc/inv_mpu/pressure/bma085.c
deleted file mode 100644
index 696d2b6..0000000
--- a/drivers/misc/inv_mpu/pressure/bma085.c
+++ /dev/null
@@ -1,367 +0,0 @@
-/*
- $License:
- Copyright (C) 2011 InvenSense Corporation, 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.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- $
- */
-
-/**
- * @defgroup ACCELDL (Motion Library - Pressure Driver Layer)
- * @brief Provides the interface to setup and handle a pressure
- * connected to the secondary I2C interface of the gyroscope.
- *
- * @{
- * @file bma085.c
- * @brief Pressure setup and handling methods.
- */
-
-/* ------------------ */
-/* - Include Files. - */
-/* ------------------ */
-
-#include <linux/i2c.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include "mpu-dev.h"
-
-#include <linux/mpu.h>
-#include "mlsl.h"
-#include "log.h"
-
-/*
- * this structure holds all device specific calibration parameters
- */
-struct bmp085_calibration_param_t {
- short ac1;
- short ac2;
- short ac3;
- unsigned short ac4;
- unsigned short ac5;
- unsigned short ac6;
- short b1;
- short b2;
- short mb;
- short mc;
- short md;
- long param_b5;
-};
-
-struct bmp085_calibration_param_t cal_param;
-
-#define PRESSURE_BMA085_PARAM_MG 3038 /* calibration parameter */
-#define PRESSURE_BMA085_PARAM_MH -7357 /* calibration parameter */
-#define PRESSURE_BMA085_PARAM_MI 3791 /* calibration parameter */
-
-/*********************************************
- * Pressure Initialization Functions
- *********************************************/
-
-static int bma085_suspend(void *mlsl_handle,
- struct ext_slave_descr *slave,
- struct ext_slave_platform_data *pdata)
-{
- int result = INV_SUCCESS;
- return result;
-}
-
-#define PRESSURE_BMA085_PROM_START_ADDR (0xAA)
-#define PRESSURE_BMA085_PROM_DATA_LEN (22)
-#define PRESSURE_BMP085_CTRL_MEAS_REG (0xF4)
-/* temperature measurent */
-#define PRESSURE_BMP085_T_MEAS (0x2E)
-/* pressure measurement; oversampling_setting */
-#define PRESSURE_BMP085_P_MEAS_OSS_0 (0x34)
-#define PRESSURE_BMP085_P_MEAS_OSS_1 (0x74)
-#define PRESSURE_BMP085_P_MEAS_OSS_2 (0xB4)
-#define PRESSURE_BMP085_P_MEAS_OSS_3 (0xF4)
-#define PRESSURE_BMP085_ADC_OUT_MSB_REG (0xF6)
-#define PRESSURE_BMP085_ADC_OUT_LSB_REG (0xF7)
-
-static int bma085_resume(void *mlsl_handle,
- struct ext_slave_descr *slave,
- struct ext_slave_platform_data *pdata)
-{
- int result;
- unsigned char data[PRESSURE_BMA085_PROM_DATA_LEN];
-
- result =
- inv_serial_read(mlsl_handle, pdata->address,
- PRESSURE_BMA085_PROM_START_ADDR,
- PRESSURE_BMA085_PROM_DATA_LEN, data);
- if (result) {
- LOG_RESULT_LOCATION(result);
- return result;
- }
-
- /* parameters AC1-AC6 */
- cal_param.ac1 = (data[0] << 8) | data[1];
- cal_param.ac2 = (data[2] << 8) | data[3];
- cal_param.ac3 = (data[4] << 8) | data[5];
- cal_param.ac4 = (data[6] << 8) | data[7];
- cal_param.ac5 = (data[8] << 8) | data[9];
- cal_param.ac6 = (data[10] << 8) | data[11];
-
- /* parameters B1,B2 */
- cal_param.b1 = (data[12] << 8) | data[13];
- cal_param.b2 = (data[14] << 8) | data[15];
-
- /* parameters MB,MC,MD */
- cal_param.mb = (data[16] << 8) | data[17];
- cal_param.mc = (data[18] << 8) | data[19];
- cal_param.md = (data[20] << 8) | data[21];
-
- return result;
-}
-
-static int bma085_read(void *mlsl_handle,
- struct ext_slave_descr *slave,
- struct ext_slave_platform_data *pdata,
- unsigned char *data)
-{
- int result;
- long pressure, x1, x2, x3, b3, b6;
- unsigned long b4, b7;
- unsigned long up;
- unsigned short ut;
- short oversampling_setting = 0;
- short temperature;
- long divisor;
-
- /* get temprature */
- result = inv_serial_single_write(mlsl_handle, pdata->address,
- PRESSURE_BMP085_CTRL_MEAS_REG,
- PRESSURE_BMP085_T_MEAS);
- msleep(5);
- result =
- inv_serial_read(mlsl_handle, pdata->address,
- PRESSURE_BMP085_ADC_OUT_MSB_REG, 2,
- (unsigned char *)data);
- if (result) {
- LOG_RESULT_LOCATION(result);
- return result;
- }
- ut = (data[0] << 8) | data[1];
-
- x1 = (((long) ut - (long)cal_param.ac6) * (long)cal_param.ac5) >> 15;
- divisor = x1 + cal_param.md;
- if (!divisor)
- return INV_ERROR_DIVIDE_BY_ZERO;
-
- x2 = ((long)cal_param.mc << 11) / (x1 + cal_param.md);
- cal_param.param_b5 = x1 + x2;
- /* temperature in 0.1 degree C */
- temperature = (short)((cal_param.param_b5 + 8) >> 4);
-
- /* get pressure */
- result = inv_serial_single_write(mlsl_handle, pdata->address,
- PRESSURE_BMP085_CTRL_MEAS_REG,
- PRESSURE_BMP085_P_MEAS_OSS_0);
- msleep(5);
- result =
- inv_serial_read(mlsl_handle, pdata->address,
- PRESSURE_BMP085_ADC_OUT_MSB_REG, 2,
- (unsigned char *)data);
- if (result) {
- LOG_RESULT_LOCATION(result);
- return result;
- }
- up = (((unsigned long) data[0] << 8) | ((unsigned long) data[1]));
-
- b6 = cal_param.param_b5 - 4000;
- /* calculate B3 */
- x1 = (b6*b6) >> 12;
- x1 *= cal_param.b2;
- x1 >>= 11;
-
- x2 = (cal_param.ac2*b6);
- x2 >>= 11;
-
- x3 = x1 + x2;
-
- b3 = (((((long)cal_param.ac1) * 4 + x3)
- << oversampling_setting) + 2) >> 2;
-
- /* calculate B4 */
- x1 = (cal_param.ac3 * b6) >> 13;
- x2 = (cal_param.b1 * ((b6*b6) >> 12)) >> 16;
- x3 = ((x1 + x2) + 2) >> 2;
- b4 = (cal_param.ac4 * (unsigned long) (x3 + 32768)) >> 15;
- if (!b4)
- return INV_ERROR;
-
- b7 = ((unsigned long)(up - b3) * (50000>>oversampling_setting));
- if (b7 < 0x80000000)
- pressure = (b7 << 1) / b4;
- else
- pressure = (b7 / b4) << 1;
-
- x1 = pressure >> 8;
- x1 *= x1;
- x1 = (x1 * PRESSURE_BMA085_PARAM_MG) >> 16;
- x2 = (pressure * PRESSURE_BMA085_PARAM_MH) >> 16;
- /* pressure in Pa */
- pressure += (x1 + x2 + PRESSURE_BMA085_PARAM_MI) >> 4;
-
- data[0] = (unsigned char)(pressure >> 16);
- data[1] = (unsigned char)(pressure >> 8);
- data[2] = (unsigned char)(pressure & 0xFF);
-
- return result;
-}
-
-static struct ext_slave_descr bma085_descr = {
- .init = NULL,
- .exit = NULL,
- .suspend = bma085_suspend,
- .resume = bma085_resume,
- .read = bma085_read,
- .config = NULL,
- .get_config = NULL,
- .name = "bma085",
- .type = EXT_SLAVE_TYPE_PRESSURE,
- .id = PRESSURE_ID_BMA085,
- .read_reg = 0xF6,
- .read_len = 3,
- .endian = EXT_SLAVE_BIG_ENDIAN,
- .range = {0, 0},
-};
-
-static
-struct ext_slave_descr *bma085_get_slave_descr(void)
-{
- return &bma085_descr;
-}
-
-/* Platform data for the MPU */
-struct bma085_mod_private_data {
- struct i2c_client *client;
- struct ext_slave_platform_data *pdata;
-};
-
-static unsigned short normal_i2c[] = { I2C_CLIENT_END };
-
-static int bma085_mod_probe(struct i2c_client *client,
- const struct i2c_device_id *devid)
-{
- struct ext_slave_platform_data *pdata;
- struct bma085_mod_private_data *private_data;
- int result = 0;
-
- dev_info(&client->adapter->dev, "%s: %s\n", __func__, devid->name);
-
- if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
- result = -ENODEV;
- goto out_no_free;
- }
-
- pdata = client->dev.platform_data;
- if (!pdata) {
- dev_err(&client->adapter->dev,
- "Missing platform data for slave %s\n", devid->name);
- result = -EFAULT;
- goto out_no_free;
- }
-
- private_data = kzalloc(sizeof(*private_data), GFP_KERNEL);
- if (!private_data) {
- result = -ENOMEM;
- goto out_no_free;
- }
-
- i2c_set_clientdata(client, private_data);
- private_data->client = client;
- private_data->pdata = pdata;
-
- result = inv_mpu_register_slave(THIS_MODULE, client, pdata,
- bma085_get_slave_descr);
- if (result) {
- dev_err(&client->adapter->dev,
- "Slave registration failed: %s, %d\n",
- devid->name, result);
- goto out_free_memory;
- }
-
- return result;
-
-out_free_memory:
- kfree(private_data);
-out_no_free:
- dev_err(&client->adapter->dev, "%s failed %d\n", __func__, result);
- return result;
-
-}
-
-static int bma085_mod_remove(struct i2c_client *client)
-{
- struct bma085_mod_private_data *private_data =
- i2c_get_clientdata(client);
-
- dev_dbg(&client->adapter->dev, "%s\n", __func__);
-
- inv_mpu_unregister_slave(client, private_data->pdata,
- bma085_get_slave_descr);
-
- kfree(private_data);
- return 0;
-}
-
-static const struct i2c_device_id bma085_mod_id[] = {
- { "bma085", PRESSURE_ID_BMA085 },
- {}
-};
-
-MODULE_DEVICE_TABLE(i2c, bma085_mod_id);
-
-static struct i2c_driver bma085_mod_driver = {
- .class = I2C_CLASS_HWMON,
- .probe = bma085_mod_probe,
- .remove = bma085_mod_remove,
- .id_table = bma085_mod_id,
- .driver = {
- .owner = THIS_MODULE,
- .name = "bma085_mod",
- },
- .address_list = normal_i2c,
-};
-
-static int __init bma085_mod_init(void)
-{
- int res = i2c_add_driver(&bma085_mod_driver);
- pr_info("%s: Probe name %s\n", __func__, "bma085_mod");
- if (res)
- pr_err("%s failed\n", __func__);
- return res;
-}
-
-static void __exit bma085_mod_exit(void)
-{
- pr_info("%s\n", __func__);
- i2c_del_driver(&bma085_mod_driver);
-}
-
-module_init(bma085_mod_init);
-module_exit(bma085_mod_exit);
-
-MODULE_AUTHOR("Invensense Corporation");
-MODULE_DESCRIPTION("Driver to integrate BMA085 sensor with the MPU");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("bma085_mod");
-/**
- * @}
-**/
generated by cgit v1.1 at 2024-05-25 22:21:28 +0000