Added missing tegra files.HEADmaster

1 files changed, 654 insertions, 0 deletions

diff --git a/drivers/misc/inv_mpu/accel/bma222.c b/drivers/misc/inv_mpu/accel/bma222.c
new file mode 100644
index 00000000000..e9fc99b1a62
--- /dev/null
+++ b/drivers/misc/inv_mpu/accel/bma222.c
@@ -0,0 +1,654 @@
+/*
+        $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   bma222.c
+ *      @brief  Accelerometer setup and handling methods for Bosch BMA222.
+ */
+
+/* ------------------ */
+/* - 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 "mldl_cfg.h"
+
+/* -------------------------------------------------------------------------- */
+
+#define BMA222_STATUS_REG       (0x0A)
+#define BMA222_FSR_REG          (0x0F)
+#define ADXL34X_ODR_REG         (0x10)
+#define BMA222_PWR_REG          (0x11)
+#define BMA222_SOFTRESET_REG    (0x14)
+
+#define BMA222_STATUS_RDY_MASK  (0x80)
+#define BMA222_FSR_MASK         (0x0F)
+#define BMA222_ODR_MASK         (0x1F)
+#define BMA222_PWR_SLEEP_MASK   (0x80)
+#define BMA222_PWR_AWAKE_MASK   (0x00)
+#define BMA222_SOFTRESET_MASK   (0xB6)
+#define BMA222_SOFTRESET_MASK   (0xB6)
+
+/* -------------------------------------------------------------------------- */
+
+struct bma222_config {
+        unsigned int odr;               /** < output data rate in mHz */
+        unsigned int fsr;               /** < full scale range mg */
+};
+
+struct bma222_private_data {
+        struct bma222_config suspend;   /** < suspend configuration */
+        struct bma222_config resume;    /** < resume configuration */
+};
+
+
+/* -------------------------------------------------------------------------- */
+
+/**
+ *  @brief Set the output data rate for the particular configuration.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *  @param config
+ *             Config to modify with new ODR.
+ *  @param apply
+ *             whether to apply immediately or save the settings to be applied
+ *             at the next resume.
+ *  @param odr
+ *             Output data rate in units of 1/1000Hz (mHz).
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int bma222_set_odr(void *mlsl_handle,
+                          struct ext_slave_platform_data *pdata,
+                          struct bma222_config *config,
+                          int apply,
+                          long odr)
+{
+        int result = INV_SUCCESS;
+        unsigned char reg_odr;
+
+        if (odr >= 1000000) {
+                reg_odr = 0x0F;
+                config->odr = 1000000;
+        } else if (odr >= 500000) {
+                reg_odr = 0x0E;
+                config->odr = 500000;
+        } else if (odr >= 250000) {
+                reg_odr = 0x0D;
+                config->odr = 250000;
+        } else if (odr >= 125000) {
+                reg_odr = 0x0C;
+                config->odr = 125000;
+        } else if (odr >= 62500) {
+                reg_odr = 0x0B;
+                config->odr = 62500;
+        } else if (odr >= 32000) {
+                reg_odr = 0x0A;
+                config->odr = 32000;
+        } else if (odr >= 16000) {
+                reg_odr = 0x09;
+                config->odr = 16000;
+        } else {
+                reg_odr = 0x08;
+                config->odr = 8000;
+        }
+
+        if (apply) {
+                MPL_LOGV("ODR: %d\n", config->odr);
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                        ADXL34X_ODR_REG, reg_odr);
+                if (result) {
+                        LOG_RESULT_LOCATION(result);
+                        return result;
+                }
+        }
+        return result;
+}
+
+/**
+ *  @brief Set the full scale range of the accels
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *  @param config
+ *             pointer to configuration.
+ *  @param apply
+ *             whether to apply immediately or save the settings to be applied
+ *             at the next resume.
+ *  @param fsr
+ *             requested full scale range.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int bma222_set_fsr(void *mlsl_handle,
+                          struct ext_slave_platform_data *pdata,
+                          struct bma222_config *config,
+                          int apply,
+                          long fsr)
+{
+        int result = INV_SUCCESS;
+        unsigned char reg_fsr_mask;
+
+        if (fsr <= 2000) {
+                reg_fsr_mask = 0x03;
+                config->fsr = 2000;
+        } else if (fsr <= 4000) {
+                reg_fsr_mask = 0x05;
+                config->fsr = 4000;
+        } else if (fsr <= 8000) {
+                reg_fsr_mask = 0x08;
+                config->fsr = 8000;
+        } else { /* 8001 -> oo */
+                reg_fsr_mask = 0x0C;
+                config->fsr = 16000;
+        }
+
+        if (apply) {
+                MPL_LOGV("FSR: %d\n", config->fsr);
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                BMA222_FSR_REG, reg_fsr_mask);
+                if (result) {
+                        LOG_RESULT_LOCATION(result);
+                        return result;
+                }
+        }
+        return result;
+}
+
+/**
+ *  @brief one-time device driver initialization function.
+ *         If the driver is built as a kernel module, this function will be
+ *         called when the module is loaded in the kernel.
+ *         If the driver is built-in in the kernel, this function will be
+ *         called at boot time.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param slave
+ *             a pointer to the slave descriptor data structure.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int bma222_init(void *mlsl_handle,
+                       struct ext_slave_descr *slave,
+                       struct ext_slave_platform_data *pdata)
+{
+        int result;
+
+        struct bma222_private_data *private_data;
+        private_data = (struct bma222_private_data *)
+            kzalloc(sizeof(struct bma222_private_data), GFP_KERNEL);
+
+        if (!private_data)
+                return INV_ERROR_MEMORY_EXAUSTED;
+
+        pdata->private_data = private_data;
+
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                        BMA222_SOFTRESET_REG, BMA222_SOFTRESET_MASK);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        msleep(1);
+
+        result = bma222_set_odr(mlsl_handle, pdata, &private_data->suspend,
+                                false, 0);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = bma222_set_odr(mlsl_handle, pdata, &private_data->resume,
+                                false, 200000);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        result = bma222_set_fsr(mlsl_handle, pdata, &private_data->suspend,
+                                false, 2000);
+        result = bma222_set_fsr(mlsl_handle, pdata, &private_data->resume,
+                                false, 2000);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                BMA222_PWR_REG, BMA222_PWR_SLEEP_MASK);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        return result;
+}
+
+/**
+ *  @brief one-time device driver exit function.
+ *         If the driver is built as a kernel module, this function will be
+ *         called when the module is removed from the kernel.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param slave
+ *             a pointer to the slave descriptor data structure.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int bma222_exit(void *mlsl_handle,
+                       struct ext_slave_descr *slave,
+                       struct ext_slave_platform_data *pdata)
+{
+        kfree(pdata->private_data);
+        return INV_SUCCESS;
+}
+
+
+/**
+ *  @brief facility to retrieve the device configuration.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param slave
+ *             a pointer to the slave descriptor data structure.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *  @param data
+ *             a pointer to store the returned configuration data structure.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int bma222_get_config(void *mlsl_handle,
+                                struct ext_slave_descr *slave,
+                                struct ext_slave_platform_data *pdata,
+                                struct ext_slave_config *data)
+{
+        struct bma222_private_data *private_data =
+                        (struct bma222_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_IRQ_SUSPEND:
+        case MPU_SLAVE_CONFIG_IRQ_RESUME:
+        default:
+                return INV_ERROR_FEATURE_NOT_IMPLEMENTED;
+        };
+
+        return INV_SUCCESS;
+}
+
+/**
+ *  @brief device configuration facility.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param slave
+ *             a pointer to the slave descriptor data structure.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *  @param data
+ *             a pointer to the configuration data structure.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int bma222_config(void *mlsl_handle,
+                         struct ext_slave_descr *slave,
+                         struct ext_slave_platform_data *pdata,
+                         struct ext_slave_config *data)
+{
+        struct bma222_private_data *private_data =
+                        (struct bma222_private_data *)(pdata->private_data);
+
+        if (!data->data)
+                return INV_ERROR_INVALID_PARAMETER;
+
+        switch (data->key) {
+        case MPU_SLAVE_CONFIG_ODR_SUSPEND:
+                return bma222_set_odr(mlsl_handle, pdata,
+                                      &private_data->suspend,
+                                      data->apply,
+                                      *((long *)data->data));
+        case MPU_SLAVE_CONFIG_ODR_RESUME:
+                return bma222_set_odr(mlsl_handle, pdata,
+                                      &private_data->resume,
+                                      data->apply,
+                                      *((long *)data->data));
+        case MPU_SLAVE_CONFIG_FSR_SUSPEND:
+                return bma222_set_fsr(mlsl_handle, pdata,
+                                      &private_data->suspend,
+                                      data->apply,
+                                      *((long *)data->data));
+        case MPU_SLAVE_CONFIG_FSR_RESUME:
+                return bma222_set_fsr(mlsl_handle, pdata,
+                                      &private_data->resume,
+                                      data->apply,
+                                      *((long *)data->data));
+        case MPU_SLAVE_CONFIG_IRQ_SUSPEND:
+        case MPU_SLAVE_CONFIG_IRQ_RESUME:
+        default:
+                return INV_ERROR_FEATURE_NOT_IMPLEMENTED;
+        };
+        return INV_SUCCESS;
+}
+
+/**
+ *  @brief suspends the device to put it in its lowest power mode.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param slave
+ *             a pointer to the slave descriptor data structure.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int bma222_suspend(void *mlsl_handle,
+                          struct ext_slave_descr *slave,
+                          struct ext_slave_platform_data *pdata)
+{
+        int result;
+        struct bma222_config *suspend_config =
+                &((struct bma222_private_data *)pdata->private_data)->suspend;
+
+        result = bma222_set_odr(mlsl_handle, pdata, suspend_config,
+                                true, suspend_config->odr);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = bma222_set_fsr(mlsl_handle, pdata, suspend_config,
+                                true, suspend_config->fsr);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                BMA222_PWR_REG, BMA222_PWR_SLEEP_MASK);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        msleep(3); /* 3 ms powerup time maximum */
+        return result;
+}
+
+/**
+ *  @brief resume the device in the proper power state given the configuration
+ *         chosen.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param slave
+ *             a pointer to the slave descriptor data structure.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int bma222_resume(void *mlsl_handle,
+                         struct ext_slave_descr *slave,
+                         struct ext_slave_platform_data *pdata)
+{
+        int result;
+        struct bma222_config *resume_config =
+                &((struct bma222_private_data *)pdata->private_data)->resume;
+
+        /* Soft reset */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                        BMA222_SOFTRESET_REG, BMA222_SOFTRESET_MASK);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        msleep(10);
+
+        result = bma222_set_odr(mlsl_handle, pdata, resume_config,
+                                true, resume_config->odr);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = bma222_set_fsr(mlsl_handle, pdata, resume_config,
+                                true, resume_config->fsr);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        return result;
+}
+
+/**
+ *  @brief read the sensor data from the device.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param slave
+ *             a pointer to the slave descriptor data structure.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *  @param data
+ *             a buffer to store the data read.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int bma222_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,
+                                BMA222_STATUS_REG, 1, data);
+        if (data[0] & BMA222_STATUS_RDY_MASK) {
+                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 struct ext_slave_descr bma222_descr = {
+        .init             = bma222_init,
+        .exit             = bma222_exit,
+        .suspend          = bma222_suspend,
+        .resume           = bma222_resume,
+        .read             = bma222_read,
+        .config           = bma222_config,
+        .get_config       = bma222_get_config,
+        .name             = "bma222",
+        .type             = EXT_SLAVE_TYPE_ACCEL,
+        .id               = ACCEL_ID_BMA222,
+        .read_reg         = 0x02,
+        .read_len         = 6,
+        .endian           = EXT_SLAVE_LITTLE_ENDIAN,
+        .range            = {2, 0},
+        .trigger          = NULL,
+};
+
+static
+struct ext_slave_descr *bma222_get_slave_descr(void)
+{
+        return &bma222_descr;
+}
+
+/* -------------------------------------------------------------------------- */
+
+struct bma222_mod_private_data {
+        struct i2c_client *client;
+        struct ext_slave_platform_data *pdata;
+};
+
+static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+
+static int bma222_mod_probe(struct i2c_client *client,
+                           const struct i2c_device_id *devid)
+{
+        struct ext_slave_platform_data *pdata;
+        struct bma222_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,
+                                        bma222_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 bma222_mod_remove(struct i2c_client *client)
+{
+        struct bma222_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,
+                                bma222_get_slave_descr);
+
+        kfree(private_data);
+        return 0;
+}
+
+static const struct i2c_device_id bma222_mod_id[] = {
+        { "bma222", ACCEL_ID_BMA222 },
+        {}
+};
+
+MODULE_DEVICE_TABLE(i2c, bma222_mod_id);
+
+static struct i2c_driver bma222_mod_driver = {
+        .class = I2C_CLASS_HWMON,
+        .probe = bma222_mod_probe,
+        .remove = bma222_mod_remove,
+        .id_table = bma222_mod_id,
+        .driver = {
+                   .owner = THIS_MODULE,
+                   .name = "bma222_mod",
+                   },
+        .address_list = normal_i2c,
+};
+
+static int __init bma222_mod_init(void)
+{
+        int res = i2c_add_driver(&bma222_mod_driver);
+        pr_info("%s: Probe name %s\n", __func__, "bma222_mod");
+        if (res)
+                pr_err("%s failed\n", __func__);
+        return res;
+}
+
+static void __exit bma222_mod_exit(void)
+{
+        pr_info("%s\n", __func__);
+        i2c_del_driver(&bma222_mod_driver);
+}
+
+module_init(bma222_mod_init);
+module_exit(bma222_mod_exit);
+
+MODULE_AUTHOR("Invensense Corporation");
+MODULE_DESCRIPTION("Driver to integrate BMA222 sensor with the MPU");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("bma222_mod");
+
+/**
+ *  @}
+ */