diff options
Diffstat (limited to 'drivers/misc/inv_mpu/accel/lis3dh.c')
| -rw-r--r-- | drivers/misc/inv_mpu/accel/lis3dh.c | 728 |
1 files changed, 0 insertions, 728 deletions
diff --git a/drivers/misc/inv_mpu/accel/lis3dh.c b/drivers/misc/inv_mpu/accel/lis3dh.c deleted file mode 100644 index 27206e4..0000000 --- a/drivers/misc/inv_mpu/accel/lis3dh.c +++ /dev/null @@ -1,728 +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/>. - $ - */ - -/** - * @addtogroup ACCELDL - * @brief Provides the interface to setup and handle an accelerometer. - * - * @{ - * @file lis3dh.c - * @brief Accelerometer setup and handling methods for ST LIS3DH. - */ - -/* -------------------------------------------------------------------------- */ - -#undef MPL_LOG_NDEBUG -#define MPL_LOG_NDEBUG 0 - -#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 <log.h> -#include <linux/mpu.h> -#include "mlsl.h" -#include "mldl_cfg.h" -#undef MPL_LOG_TAG -#define MPL_LOG_TAG "MPL-acc" - -/* full scale setting - register & mask */ -#define LIS3DH_CTRL_REG1 (0x20) -#define LIS3DH_CTRL_REG2 (0x21) -#define LIS3DH_CTRL_REG3 (0x22) -#define LIS3DH_CTRL_REG4 (0x23) -#define LIS3DH_CTRL_REG5 (0x24) -#define LIS3DH_CTRL_REG6 (0x25) -#define LIS3DH_REFERENCE (0x26) -#define LIS3DH_STATUS_REG (0x27) -#define LIS3DH_OUT_X_L (0x28) -#define LIS3DH_OUT_X_H (0x29) -#define LIS3DH_OUT_Y_L (0x2a) -#define LIS3DH_OUT_Y_H (0x2b) -#define LIS3DH_OUT_Z_L (0x2c) -#define LIS3DH_OUT_Z_H (0x2d) - -#define LIS3DH_INT1_CFG (0x30) -#define LIS3DH_INT1_SRC (0x31) -#define LIS3DH_INT1_THS (0x32) -#define LIS3DH_INT1_DURATION (0x33) - -#define LIS3DH_MAX_DUR (0x7F) - -/* -------------------------------------------------------------------------- */ - -struct lis3dh_config { - unsigned long odr; - unsigned int fsr; /* full scale range mg */ - unsigned int ths; /* Motion no-motion thseshold mg */ - unsigned int dur; /* Motion no-motion duration ms */ - unsigned char reg_ths; - unsigned char reg_dur; - unsigned char ctrl_reg1; - unsigned char irq_type; - unsigned char mot_int1_cfg; -}; - -struct lis3dh_private_data { - struct lis3dh_config suspend; - struct lis3dh_config resume; -}; - -/* -------------------------------------------------------------------------- */ - -static int lis3dh_set_ths(void *mlsl_handle, - struct ext_slave_platform_data *pdata, - struct lis3dh_config *config, int apply, long ths) -{ - int result = INV_SUCCESS; - if ((unsigned int)ths > 1000 * config->fsr) - ths = (long)1000 * config->fsr; - - if (ths < 0) - ths = 0; - - config->ths = ths; - config->reg_ths = (unsigned char)(long)((ths * 128L) / (config->fsr)); - MPL_LOGV("THS: %d, 0x%02x\n", config->ths, (int)config->reg_ths); - if (apply) - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_INT1_THS, - config->reg_ths); - return result; -} - -static int lis3dh_set_dur(void *mlsl_handle, - struct ext_slave_platform_data *pdata, - struct lis3dh_config *config, int apply, long dur) -{ - int result = INV_SUCCESS; - long reg_dur = (dur * config->odr) / 1000000L; - config->dur = dur; - - if (reg_dur > LIS3DH_MAX_DUR) - reg_dur = LIS3DH_MAX_DUR; - - config->reg_dur = (unsigned char)reg_dur; - MPL_LOGV("DUR: %d, 0x%02x\n", config->dur, (int)config->reg_dur); - if (apply) - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_INT1_DURATION, - (unsigned char)reg_dur); - return result; -} - -/** - * Sets the IRQ to fire when one of the IRQ events occur. Threshold and - * duration will not be used uless the type is MOT or NMOT. - * - * @param config configuration to apply to, suspend or resume - * @param irq_type The type of IRQ. Valid values are - * - MPU_SLAVE_IRQ_TYPE_NONE - * - MPU_SLAVE_IRQ_TYPE_MOTION - * - MPU_SLAVE_IRQ_TYPE_DATA_READY - */ -static int lis3dh_set_irq(void *mlsl_handle, - struct ext_slave_platform_data *pdata, - struct lis3dh_config *config, - int apply, long irq_type) -{ - int result = INV_SUCCESS; - unsigned char reg1; - unsigned char reg2; - - config->irq_type = (unsigned char)irq_type; - if (irq_type == MPU_SLAVE_IRQ_TYPE_DATA_READY) { - reg1 = 0x10; - reg2 = 0x00; - } else if (irq_type == MPU_SLAVE_IRQ_TYPE_MOTION) { - reg1 = 0x40; - reg2 = config->mot_int1_cfg; - } else { - reg1 = 0x00; - reg2 = 0x00; - } - - if (apply) { - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_CTRL_REG3, reg1); - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_INT1_CFG, reg2); - } - - return result; -} - -/** - * Set the Output data rate for the particular configuration - * - * @param config Config to modify with new ODR - * @param odr Output data rate in units of 1/1000Hz - */ -static int lis3dh_set_odr(void *mlsl_handle, - struct ext_slave_platform_data *pdata, - struct lis3dh_config *config, int apply, long odr) -{ - unsigned char bits; - int result = INV_SUCCESS; - - if (odr > 400000L) { - config->odr = 1250000L; - bits = 0x90; - } else if (odr > 200000L) { - config->odr = 400000L; - bits = 0x70; - } else if (odr > 100000L) { - config->odr = 200000L; - bits = 0x60; - } else if (odr > 50000) { - config->odr = 100000L; - bits = 0x50; - } else if (odr > 25000) { - config->odr = 50000; - bits = 0x40; - } else if (odr > 10000) { - config->odr = 25000; - bits = 0x30; - } else if (odr > 1000) { - config->odr = 10000; - bits = 0x20; - } else if (odr > 500) { - config->odr = 1000; - bits = 0x10; - } else { - config->odr = 0; - bits = 0; - } - - config->ctrl_reg1 = bits | (config->ctrl_reg1 & 0xf); - lis3dh_set_dur(mlsl_handle, pdata, config, apply, config->dur); - MPL_LOGV("ODR: %ld, 0x%02x\n", config->odr, (int)config->ctrl_reg1); - if (apply) - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_CTRL_REG1, - config->ctrl_reg1); - return result; -} - -/** - * Set the full scale range of the accels - * - * @param config pointer to configuration - * @param fsr requested full scale range - */ -static int lis3dh_set_fsr(void *mlsl_handle, - struct ext_slave_platform_data *pdata, - struct lis3dh_config *config, int apply, long fsr) -{ - int result = INV_SUCCESS; - unsigned char reg1 = 0x48; - - if (fsr <= 2048) { - config->fsr = 2048; - } else if (fsr <= 4096) { - reg1 |= 0x10; - config->fsr = 4096; - } else if (fsr <= 8192) { - reg1 |= 0x20; - config->fsr = 8192; - } else { - reg1 |= 0x30; - config->fsr = 16348; - } - - lis3dh_set_ths(mlsl_handle, pdata, config, apply, config->ths); - MPL_LOGV("FSR: %d\n", config->fsr); - if (apply) - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_CTRL_REG4, reg1); - - return result; -} - -static int lis3dh_suspend(void *mlsl_handle, - struct ext_slave_descr *slave, - struct ext_slave_platform_data *pdata) -{ - int result = INV_SUCCESS; - unsigned char reg1; - unsigned char reg2; - struct lis3dh_private_data *private_data = pdata->private_data; - - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_CTRL_REG1, - private_data->suspend.ctrl_reg1); - - reg1 = 0x48; - if (private_data->suspend.fsr == 16384) - reg1 |= 0x30; - else if (private_data->suspend.fsr == 8192) - reg1 |= 0x20; - else if (private_data->suspend.fsr == 4096) - reg1 |= 0x10; - else if (private_data->suspend.fsr == 2048) - reg1 |= 0x00; - - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_CTRL_REG4, reg1); - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_INT1_THS, - private_data->suspend.reg_ths); - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_INT1_DURATION, - private_data->suspend.reg_dur); - - if (private_data->suspend.irq_type == MPU_SLAVE_IRQ_TYPE_DATA_READY) { - reg1 = 0x10; - reg2 = 0x00; - } else if (private_data->suspend.irq_type == - MPU_SLAVE_IRQ_TYPE_MOTION) { - reg1 = 0x40; - reg2 = private_data->suspend.mot_int1_cfg; - } else { - reg1 = 0x00; - reg2 = 0x00; - } - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_CTRL_REG3, reg1); - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_INT1_CFG, reg2); - result = inv_serial_read(mlsl_handle, pdata->address, - LIS3DH_CTRL_REG6, 1, ®1); - - return result; -} - -static int lis3dh_resume(void *mlsl_handle, - struct ext_slave_descr *slave, - struct ext_slave_platform_data *pdata) -{ - int result; - unsigned char reg1; - unsigned char reg2; - struct lis3dh_private_data *private_data = pdata->private_data; - - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_CTRL_REG1, - private_data->resume.ctrl_reg1); - if (result) { - LOG_RESULT_LOCATION(result); - return result; - } - msleep(6); - - /* Full Scale */ - reg1 = 0x48; - if (private_data->suspend.fsr == 16384) - reg1 |= 0x30; - else if (private_data->suspend.fsr == 8192) - reg1 |= 0x20; - else if (private_data->suspend.fsr == 4096) - reg1 |= 0x10; - else if (private_data->suspend.fsr == 2048) - reg1 |= 0x00; - - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_CTRL_REG4, reg1); - if (result) { - LOG_RESULT_LOCATION(result); - return result; - } - - if (private_data->resume.irq_type == MPU_SLAVE_IRQ_TYPE_DATA_READY) { - reg1 = 0x10; - reg2 = 0x00; - } else if (private_data->resume.irq_type == MPU_SLAVE_IRQ_TYPE_MOTION) { - reg1 = 0x40; - reg2 = private_data->resume.mot_int1_cfg; - } else { - reg1 = 0x00; - reg2 = 0x00; - } - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_CTRL_REG3, reg1); - if (result) { - LOG_RESULT_LOCATION(result); - return result; - } - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_INT1_THS, - private_data->resume.reg_ths); - if (result) { - LOG_RESULT_LOCATION(result); - return result; - } - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_INT1_DURATION, - private_data->resume.reg_dur); - if (result) { - LOG_RESULT_LOCATION(result); - return result; - } - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_INT1_CFG, reg2); - if (result) { - LOG_RESULT_LOCATION(result); - return result; - } - result = inv_serial_read(mlsl_handle, pdata->address, - LIS3DH_CTRL_REG6, 1, ®1); - if (result) { - LOG_RESULT_LOCATION(result); - return result; - } - return result; -} - -static int lis3dh_read(void *mlsl_handle, - struct ext_slave_descr *slave, - struct ext_slave_platform_data *pdata, - unsigned char *data) -{ - int result = INV_SUCCESS; - result = inv_serial_read(mlsl_handle, pdata->address, - LIS3DH_STATUS_REG, 1, data); - if (data[0] & 0x0F) { - result = inv_serial_read(mlsl_handle, pdata->address, - slave->read_reg, slave->read_len, - data); - return result; - } else - return INV_ERROR_ACCEL_DATA_NOT_READY; -} - -static int lis3dh_init(void *mlsl_handle, - struct ext_slave_descr *slave, - struct ext_slave_platform_data *pdata) -{ - int result; - long range; - struct lis3dh_private_data *private_data; - private_data = (struct lis3dh_private_data *) - kzalloc(sizeof(struct lis3dh_private_data), GFP_KERNEL); - - if (!private_data) - return INV_ERROR_MEMORY_EXAUSTED; - - pdata->private_data = private_data; - - private_data->resume.ctrl_reg1 = 0x67; - private_data->suspend.ctrl_reg1 = 0x18; - private_data->resume.mot_int1_cfg = 0x95; - private_data->suspend.mot_int1_cfg = 0x2a; - - lis3dh_set_odr(mlsl_handle, pdata, &private_data->suspend, false, 0); - lis3dh_set_odr(mlsl_handle, pdata, &private_data->resume, - false, 200000L); - - range = range_fixedpoint_to_long_mg(slave->range); - lis3dh_set_fsr(mlsl_handle, pdata, &private_data->suspend, - false, range); - lis3dh_set_fsr(mlsl_handle, pdata, &private_data->resume, - false, range); - - lis3dh_set_ths(mlsl_handle, pdata, &private_data->suspend, - false, 80); - lis3dh_set_ths(mlsl_handle, pdata, &private_data->resume, - false, 40); - - lis3dh_set_dur(mlsl_handle, pdata, &private_data->suspend, - false, 1000); - lis3dh_set_dur(mlsl_handle, pdata, &private_data->resume, - false, 2540); - - lis3dh_set_irq(mlsl_handle, pdata, &private_data->suspend, - false, MPU_SLAVE_IRQ_TYPE_NONE); - lis3dh_set_irq(mlsl_handle, pdata, &private_data->resume, - false, MPU_SLAVE_IRQ_TYPE_NONE); - - result = inv_serial_single_write(mlsl_handle, pdata->address, - LIS3DH_CTRL_REG1, 0x07); - msleep(6); - - return INV_SUCCESS; -} - -static int lis3dh_exit(void *mlsl_handle, - struct ext_slave_descr *slave, - struct ext_slave_platform_data *pdata) -{ - kfree(pdata->private_data); - return INV_SUCCESS; -} - -static int lis3dh_config(void *mlsl_handle, - struct ext_slave_descr *slave, - struct ext_slave_platform_data *pdata, - struct ext_slave_config *data) -{ - struct lis3dh_private_data *private_data = pdata->private_data; - if (!data->data) - return INV_ERROR_INVALID_PARAMETER; - - switch (data->key) { - case MPU_SLAVE_CONFIG_ODR_SUSPEND: - return lis3dh_set_odr(mlsl_handle, pdata, - &private_data->suspend, - data->apply, *((long *)data->data)); - case MPU_SLAVE_CONFIG_ODR_RESUME: - return lis3dh_set_odr(mlsl_handle, pdata, - &private_data->resume, - data->apply, *((long *)data->data)); - case MPU_SLAVE_CONFIG_FSR_SUSPEND: - return lis3dh_set_fsr(mlsl_handle, pdata, - &private_data->suspend, - data->apply, *((long *)data->data)); - case MPU_SLAVE_CONFIG_FSR_RESUME: - return lis3dh_set_fsr(mlsl_handle, pdata, - &private_data->resume, - data->apply, *((long *)data->data)); - case MPU_SLAVE_CONFIG_MOT_THS: - return lis3dh_set_ths(mlsl_handle, pdata, - &private_data->suspend, - data->apply, *((long *)data->data)); - case MPU_SLAVE_CONFIG_NMOT_THS: - return lis3dh_set_ths(mlsl_handle, pdata, - &private_data->resume, - data->apply, *((long *)data->data)); - case MPU_SLAVE_CONFIG_MOT_DUR: - return lis3dh_set_dur(mlsl_handle, pdata, - &private_data->suspend, - data->apply, *((long *)data->data)); - case MPU_SLAVE_CONFIG_NMOT_DUR: - return lis3dh_set_dur(mlsl_handle, pdata, - &private_data->resume, - data->apply, *((long *)data->data)); - case MPU_SLAVE_CONFIG_IRQ_SUSPEND: - return lis3dh_set_irq(mlsl_handle, pdata, - &private_data->suspend, - data->apply, *((long *)data->data)); - case MPU_SLAVE_CONFIG_IRQ_RESUME: - return lis3dh_set_irq(mlsl_handle, pdata, - &private_data->resume, - data->apply, *((long *)data->data)); - default: - return INV_ERROR_FEATURE_NOT_IMPLEMENTED; - }; - return INV_SUCCESS; -} - -static int lis3dh_get_config(void *mlsl_handle, - struct ext_slave_descr *slave, - struct ext_slave_platform_data *pdata, - struct ext_slave_config *data) -{ - struct lis3dh_private_data *private_data = pdata->private_data; - if (!data->data) - return INV_ERROR_INVALID_PARAMETER; - - switch (data->key) { - case MPU_SLAVE_CONFIG_ODR_SUSPEND: - (*(unsigned long *)data->data) = - (unsigned long)private_data->suspend.odr; - break; - case MPU_SLAVE_CONFIG_ODR_RESUME: - (*(unsigned long *)data->data) = - (unsigned long)private_data->resume.odr; - break; - case MPU_SLAVE_CONFIG_FSR_SUSPEND: - (*(unsigned long *)data->data) = - (unsigned long)private_data->suspend.fsr; - break; - case MPU_SLAVE_CONFIG_FSR_RESUME: - (*(unsigned long *)data->data) = - (unsigned long)private_data->resume.fsr; - break; - case MPU_SLAVE_CONFIG_MOT_THS: - (*(unsigned long *)data->data) = - (unsigned long)private_data->suspend.ths; - break; - case MPU_SLAVE_CONFIG_NMOT_THS: - (*(unsigned long *)data->data) = - (unsigned long)private_data->resume.ths; - break; - case MPU_SLAVE_CONFIG_MOT_DUR: - (*(unsigned long *)data->data) = - (unsigned long)private_data->suspend.dur; - break; - case MPU_SLAVE_CONFIG_NMOT_DUR: - (*(unsigned long *)data->data) = - (unsigned long)private_data->resume.dur; - break; - case MPU_SLAVE_CONFIG_IRQ_SUSPEND: - (*(unsigned long *)data->data) = - (unsigned long)private_data->suspend.irq_type; - break; - case MPU_SLAVE_CONFIG_IRQ_RESUME: - (*(unsigned long *)data->data) = - (unsigned long)private_data->resume.irq_type; - break; - default: - return INV_ERROR_FEATURE_NOT_IMPLEMENTED; - }; - - return INV_SUCCESS; -} - -static struct ext_slave_descr lis3dh_descr = { - .init = lis3dh_init, - .exit = lis3dh_exit, - .suspend = lis3dh_suspend, - .resume = lis3dh_resume, - .read = lis3dh_read, - .config = lis3dh_config, - .get_config = lis3dh_get_config, - .name = "lis3dh", - .type = EXT_SLAVE_TYPE_ACCEL, - .id = ACCEL_ID_LIS3DH, - .read_reg = 0x28 | 0x80, /* 0x80 for burst reads */ - .read_len = 6, - .endian = EXT_SLAVE_BIG_ENDIAN, - .range = {2, 480}, - .trigger = NULL, -}; - -static -struct ext_slave_descr *lis3dh_get_slave_descr(void) -{ - return &lis3dh_descr; -} - -/* -------------------------------------------------------------------------- */ -struct lis3dh_mod_private_data { - struct i2c_client *client; - struct ext_slave_platform_data *pdata; -}; - -static unsigned short normal_i2c[] = { I2C_CLIENT_END }; - -static int lis3dh_mod_probe(struct i2c_client *client, - const struct i2c_device_id *devid) -{ - struct ext_slave_platform_data *pdata; - struct lis3dh_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, - lis3dh_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 lis3dh_mod_remove(struct i2c_client *client) -{ - struct lis3dh_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, - lis3dh_get_slave_descr); - - kfree(private_data); - return 0; -} - -static const struct i2c_device_id lis3dh_mod_id[] = { - { "lis3dh", ACCEL_ID_LIS3DH }, - {} -}; - -MODULE_DEVICE_TABLE(i2c, lis3dh_mod_id); - -static struct i2c_driver lis3dh_mod_driver = { - .class = I2C_CLASS_HWMON, - .probe = lis3dh_mod_probe, - .remove = lis3dh_mod_remove, - .id_table = lis3dh_mod_id, - .driver = { - .owner = THIS_MODULE, - .name = "lis3dh_mod", - }, - .address_list = normal_i2c, -}; - -static int __init lis3dh_mod_init(void) -{ - int res = i2c_add_driver(&lis3dh_mod_driver); - pr_info("%s: Probe name %s\n", __func__, "lis3dh_mod"); - if (res) - pr_err("%s failed\n", __func__); - return res; -} - -static void __exit lis3dh_mod_exit(void) -{ - pr_info("%s\n", __func__); - i2c_del_driver(&lis3dh_mod_driver); -} - -module_init(lis3dh_mod_init); -module_exit(lis3dh_mod_exit); - -MODULE_AUTHOR("Invensense Corporation"); -MODULE_DESCRIPTION("Driver to integrate LIS3DH sensor with the MPU"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("lis3dh_mod"); - -/* - * @} - */ |