Added missing tegra files.HEADmaster

1 files changed, 313 insertions, 0 deletions

diff --git a/drivers/misc/inv_mpu/compass/mmc314x.c b/drivers/misc/inv_mpu/compass/mmc314x.c
new file mode 100644
index 00000000000..786fadcc3e4
--- /dev/null
+++ b/drivers/misc/inv_mpu/compass/mmc314x.c
@@ -0,0 +1,313 @@
+/*
+        $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 COMPASSDL
+ *
+ *  @{
+ *      @file   mmc314x.c
+ *      @brief  Magnetometer setup and handling methods for the
+ *              MEMSIC MMC314x compass.
+ */
+
+/* -------------------------------------------------------------------------- */
+
+#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-compass"
+
+/* -------------------------------------------------------------------------- */
+
+static int reset_int = 1000;
+static int read_count = 1;
+static char reset_mode;         /* in Z-init section */
+
+/* -------------------------------------------------------------------------- */
+#define MMC314X_REG_ST (0x00)
+#define MMC314X_REG_X_MSB (0x01)
+
+#define MMC314X_CNTL_MODE_WAKE_UP (0x01)
+#define MMC314X_CNTL_MODE_SET (0x02)
+#define MMC314X_CNTL_MODE_RESET (0x04)
+
+/* -------------------------------------------------------------------------- */
+
+static int mmc314x_suspend(void *mlsl_handle,
+                           struct ext_slave_descr *slave,
+                           struct ext_slave_platform_data *pdata)
+{
+        int result = INV_SUCCESS;
+
+        return result;
+}
+
+static int mmc314x_resume(void *mlsl_handle,
+                          struct ext_slave_descr *slave,
+                          struct ext_slave_platform_data *pdata)
+{
+
+        int result;
+        result =
+            inv_serial_single_write(mlsl_handle, pdata->address,
+                                    MMC314X_REG_ST, MMC314X_CNTL_MODE_RESET);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        msleep(10);
+        result =
+            inv_serial_single_write(mlsl_handle, pdata->address,
+                                    MMC314X_REG_ST, MMC314X_CNTL_MODE_SET);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        msleep(10);
+        read_count = 1;
+        return INV_SUCCESS;
+}
+
+static int mmc314x_read(void *mlsl_handle,
+                        struct ext_slave_descr *slave,
+                        struct ext_slave_platform_data *pdata,
+                        unsigned char *data)
+{
+        int result, ii;
+        short tmp[3];
+        unsigned char tmpdata[6];
+
+        if (read_count > 1000)
+                read_count = 1;
+
+        result =
+            inv_serial_read(mlsl_handle, pdata->address, MMC314X_REG_X_MSB,
+                            6, (unsigned char *)data);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        for (ii = 0; ii < 6; ii++)
+                tmpdata[ii] = data[ii];
+
+        for (ii = 0; ii < 3; ii++) {
+                tmp[ii] = (short)((tmpdata[2 * ii] << 8) + tmpdata[2 * ii + 1]);
+                tmp[ii] = tmp[ii] - 4096;
+                tmp[ii] = tmp[ii] * 16;
+        }
+
+        for (ii = 0; ii < 3; ii++) {
+                data[2 * ii] = (unsigned char)(tmp[ii] >> 8);
+                data[2 * ii + 1] = (unsigned char)(tmp[ii]);
+        }
+
+        if (read_count % reset_int == 0) {
+                if (reset_mode) {
+                        result =
+                            inv_serial_single_write(mlsl_handle,
+                                                    pdata->address,
+                                                    MMC314X_REG_ST,
+                                                    MMC314X_CNTL_MODE_RESET);
+                        if (result) {
+                                LOG_RESULT_LOCATION(result);
+                                return result;
+                        }
+                        reset_mode = 0;
+                        return INV_ERROR_COMPASS_DATA_NOT_READY;
+                } else {
+                        result =
+                            inv_serial_single_write(mlsl_handle,
+                                                    pdata->address,
+                                                    MMC314X_REG_ST,
+                                                    MMC314X_CNTL_MODE_SET);
+                        if (result) {
+                                LOG_RESULT_LOCATION(result);
+                                return result;
+                        }
+                        reset_mode = 1;
+                        read_count++;
+                        return INV_ERROR_COMPASS_DATA_NOT_READY;
+                }
+        }
+        result =
+            inv_serial_single_write(mlsl_handle, pdata->address,
+                                    MMC314X_REG_ST, MMC314X_CNTL_MODE_WAKE_UP);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        read_count++;
+
+        return INV_SUCCESS;
+}
+
+static struct ext_slave_descr mmc314x_descr = {
+        .init             = NULL,
+        .exit             = NULL,
+        .suspend          = mmc314x_suspend,
+        .resume           = mmc314x_resume,
+        .read             = mmc314x_read,
+        .config           = NULL,
+        .get_config       = NULL,
+        .name             = "mmc314x",
+        .type             = EXT_SLAVE_TYPE_COMPASS,
+        .id               = COMPASS_ID_MMC314X,
+        .read_reg         = 0x01,
+        .read_len         = 6,
+        .endian           = EXT_SLAVE_BIG_ENDIAN,
+        .range            = {400, 0},
+        .trigger          = NULL,
+};
+
+static
+struct ext_slave_descr *mmc314x_get_slave_descr(void)
+{
+        return &mmc314x_descr;
+}
+
+/* -------------------------------------------------------------------------- */
+struct mmc314x_mod_private_data {
+        struct i2c_client *client;
+        struct ext_slave_platform_data *pdata;
+};
+
+static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+
+static int mmc314x_mod_probe(struct i2c_client *client,
+                           const struct i2c_device_id *devid)
+{
+        struct ext_slave_platform_data *pdata;
+        struct mmc314x_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,
+                                        mmc314x_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 mmc314x_mod_remove(struct i2c_client *client)
+{
+        struct mmc314x_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,
+                                mmc314x_get_slave_descr);
+
+        kfree(private_data);
+        return 0;
+}
+
+static const struct i2c_device_id mmc314x_mod_id[] = {
+        { "mmc314x", COMPASS_ID_MMC314X },
+        {}
+};
+
+MODULE_DEVICE_TABLE(i2c, mmc314x_mod_id);
+
+static struct i2c_driver mmc314x_mod_driver = {
+        .class = I2C_CLASS_HWMON,
+        .probe = mmc314x_mod_probe,
+        .remove = mmc314x_mod_remove,
+        .id_table = mmc314x_mod_id,
+        .driver = {
+                   .owner = THIS_MODULE,
+                   .name = "mmc314x_mod",
+                   },
+        .address_list = normal_i2c,
+};
+
+static int __init mmc314x_mod_init(void)
+{
+        int res = i2c_add_driver(&mmc314x_mod_driver);
+        pr_info("%s: Probe name %s\n", __func__, "mmc314x_mod");
+        if (res)
+                pr_err("%s failed\n", __func__);
+        return res;
+}
+
+static void __exit mmc314x_mod_exit(void)
+{
+        pr_info("%s\n", __func__);
+        i2c_del_driver(&mmc314x_mod_driver);
+}
+
+module_init(mmc314x_mod_init);
+module_exit(mmc314x_mod_exit);
+
+MODULE_AUTHOR("Invensense Corporation");
+MODULE_DESCRIPTION("Driver to integrate MMC314X sensor with the MPU");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("mmc314x_mod");
+
+/**
+ *  @}
+ */