Added missing tegra files.HEADmaster

1 files changed, 318 insertions, 0 deletions

diff --git a/drivers/misc/inv_mpu/compass/hscdtd004a.c b/drivers/misc/inv_mpu/compass/hscdtd004a.c
new file mode 100644
index 00000000000..f0915599bd2
--- /dev/null
+++ b/drivers/misc/inv_mpu/compass/hscdtd004a.c
@@ -0,0 +1,318 @@
+/*
+        $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   hscdtd004a.c
+ *      @brief  Magnetometer setup and handling methods for Alps HSCDTD004A
+ *              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"
+
+/* -------------------------------------------------------------------------- */
+#define COMPASS_HSCDTD004A_STAT          (0x18)
+#define COMPASS_HSCDTD004A_CTRL1         (0x1B)
+#define COMPASS_HSCDTD004A_CTRL2         (0x1C)
+#define COMPASS_HSCDTD004A_CTRL3         (0x1D)
+#define COMPASS_HSCDTD004A_DATAX         (0x10)
+
+/* -------------------------------------------------------------------------- */
+
+static int hscdtd004a_suspend(void *mlsl_handle,
+                              struct ext_slave_descr *slave,
+                              struct ext_slave_platform_data *pdata)
+{
+        int result = INV_SUCCESS;
+
+        /* Power mode: stand-by */
+        result =
+            inv_serial_single_write(mlsl_handle, pdata->address,
+                                    COMPASS_HSCDTD004A_CTRL1, 0x00);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        msleep(1);              /* turn-off time */
+
+        return result;
+}
+
+static int hscdtd004a_init(void *mlsl_handle,
+                           struct ext_slave_descr *slave,
+                           struct ext_slave_platform_data *pdata)
+{
+        int result;
+        unsigned char data1, data2[2];
+
+        result = inv_serial_read(mlsl_handle, pdata->address, 0xf, 1, &data1);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = inv_serial_read(mlsl_handle, pdata->address, 0xd, 2, data2);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        if (data1 != 0x49 || data2[0] != 0x45 || data2[1] != 0x54) {
+                LOG_RESULT_LOCATION(INV_ERROR_SERIAL_DEVICE_NOT_RECOGNIZED);
+                return INV_ERROR_SERIAL_DEVICE_NOT_RECOGNIZED;
+        }
+        return result;
+}
+
+static int hscdtd004a_resume(void *mlsl_handle,
+                             struct ext_slave_descr *slave,
+                             struct ext_slave_platform_data *pdata)
+{
+        int result = INV_SUCCESS;
+
+        /* Soft reset */
+        result =
+            inv_serial_single_write(mlsl_handle, pdata->address,
+                                    COMPASS_HSCDTD004A_CTRL3, 0x80);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        /* Normal state; Power mode: active */
+        result =
+            inv_serial_single_write(mlsl_handle, pdata->address,
+                                    COMPASS_HSCDTD004A_CTRL1, 0x82);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        /* Data ready enable */
+        result =
+            inv_serial_single_write(mlsl_handle, pdata->address,
+                                    COMPASS_HSCDTD004A_CTRL2, 0x7C);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        msleep(1);              /* turn-on time */
+        return result;
+}
+
+static int hscdtd004a_read(void *mlsl_handle,
+                           struct ext_slave_descr *slave,
+                           struct ext_slave_platform_data *pdata,
+                           unsigned char *data)
+{
+        unsigned char stat;
+        int result = INV_SUCCESS;
+        int status = INV_SUCCESS;
+
+        /* Read status reg. to check if data is ready */
+        result =
+            inv_serial_read(mlsl_handle, pdata->address,
+                            COMPASS_HSCDTD004A_STAT, 1, &stat);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        if (stat & 0x48) {
+                result =
+                    inv_serial_read(mlsl_handle, pdata->address,
+                                    COMPASS_HSCDTD004A_DATAX, 6,
+                                    (unsigned char *)data);
+                if (result) {
+                        LOG_RESULT_LOCATION(result);
+                        return result;
+                }
+                status = INV_SUCCESS;
+        } else if (stat & 0x68) {
+                status = INV_ERROR_COMPASS_DATA_OVERFLOW;
+        } else {
+                status = INV_ERROR_COMPASS_DATA_NOT_READY;
+        }
+        /* trigger next measurement read */
+        result =
+            inv_serial_single_write(mlsl_handle, pdata->address,
+                                    COMPASS_HSCDTD004A_CTRL3, 0x40);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        return status;
+
+}
+
+static struct ext_slave_descr hscdtd004a_descr = {
+        .init             = hscdtd004a_init,
+        .exit             = NULL,
+        .suspend          = hscdtd004a_suspend,
+        .resume           = hscdtd004a_resume,
+        .read             = hscdtd004a_read,
+        .config           = NULL,
+        .get_config       = NULL,
+        .name             = "hscdtd004a",
+        .type             = EXT_SLAVE_TYPE_COMPASS,
+        .id               = COMPASS_ID_HSCDTD004A,
+        .read_reg         = 0x10,
+        .read_len         = 6,
+        .endian           = EXT_SLAVE_LITTLE_ENDIAN,
+        .range            = {9830, 4000},
+        .trigger          = NULL,
+};
+
+static
+struct ext_slave_descr *hscdtd004a_get_slave_descr(void)
+{
+        return &hscdtd004a_descr;
+}
+
+/* -------------------------------------------------------------------------- */
+struct hscdtd004a_mod_private_data {
+        struct i2c_client *client;
+        struct ext_slave_platform_data *pdata;
+};
+
+static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+
+static int hscdtd004a_mod_probe(struct i2c_client *client,
+                           const struct i2c_device_id *devid)
+{
+        struct ext_slave_platform_data *pdata;
+        struct hscdtd004a_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,
+                                        hscdtd004a_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 hscdtd004a_mod_remove(struct i2c_client *client)
+{
+        struct hscdtd004a_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,
+                                hscdtd004a_get_slave_descr);
+
+        kfree(private_data);
+        return 0;
+}
+
+static const struct i2c_device_id hscdtd004a_mod_id[] = {
+        { "hscdtd004a", COMPASS_ID_HSCDTD004A },
+        {}
+};
+
+MODULE_DEVICE_TABLE(i2c, hscdtd004a_mod_id);
+
+static struct i2c_driver hscdtd004a_mod_driver = {
+        .class = I2C_CLASS_HWMON,
+        .probe = hscdtd004a_mod_probe,
+        .remove = hscdtd004a_mod_remove,
+        .id_table = hscdtd004a_mod_id,
+        .driver = {
+                   .owner = THIS_MODULE,
+                   .name = "hscdtd004a_mod",
+                   },
+        .address_list = normal_i2c,
+};
+
+static int __init hscdtd004a_mod_init(void)
+{
+        int res = i2c_add_driver(&hscdtd004a_mod_driver);
+        pr_info("%s: Probe name %s\n", __func__, "hscdtd004a_mod");
+        if (res)
+                pr_err("%s failed\n", __func__);
+        return res;
+}
+
+static void __exit hscdtd004a_mod_exit(void)
+{
+        pr_info("%s\n", __func__);
+        i2c_del_driver(&hscdtd004a_mod_driver);
+}
+
+module_init(hscdtd004a_mod_init);
+module_exit(hscdtd004a_mod_exit);
+
+MODULE_AUTHOR("Invensense Corporation");
+MODULE_DESCRIPTION("Driver to integrate HSCDTD004A sensor with the MPU");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("hscdtd004a_mod");
+
+/**
+ *  @}
+ */