[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/iio/light/vcnl4000.c b/src/kernel/linux/v4.14/drivers/iio/light/vcnl4000.c
new file mode 100644
index 0000000..5a3a532
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/iio/light/vcnl4000.c
@@ -0,0 +1,209 @@
+/*
+ * vcnl4000.c - Support for Vishay VCNL4000/4010/4020 combined ambient
+ * light and proximity sensor
+ *
+ * Copyright 2012 Peter Meerwald <pmeerw@pmeerw.net>
+ *
+ * This file is subject to the terms and conditions of version 2 of
+ * the GNU General Public License. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * IIO driver for VCNL4000 (7-bit I2C slave address 0x13)
+ *
+ * TODO:
+ * allow to adjust IR current
+ * proximity threshold and event handling
+ * periodic ALS/proximity measurement (VCNL4010/20)
+ * interrupts (VCNL4010/20)
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+#define VCNL4000_DRV_NAME "vcnl4000"
+#define VCNL4000_ID 0x01
+#define VCNL4010_ID 0x02 /* for VCNL4020, VCNL4010 */
+
+#define VCNL4000_COMMAND 0x80 /* Command register */
+#define VCNL4000_PROD_REV 0x81 /* Product ID and Revision ID */
+#define VCNL4000_LED_CURRENT 0x83 /* IR LED current for proximity mode */
+#define VCNL4000_AL_PARAM 0x84 /* Ambient light parameter register */
+#define VCNL4000_AL_RESULT_HI 0x85 /* Ambient light result register, MSB */
+#define VCNL4000_AL_RESULT_LO 0x86 /* Ambient light result register, LSB */
+#define VCNL4000_PS_RESULT_HI 0x87 /* Proximity result register, MSB */
+#define VCNL4000_PS_RESULT_LO 0x88 /* Proximity result register, LSB */
+#define VCNL4000_PS_MEAS_FREQ 0x89 /* Proximity test signal frequency */
+#define VCNL4000_PS_MOD_ADJ 0x8a /* Proximity modulator timing adjustment */
+
+/* Bit masks for COMMAND register */
+#define VCNL4000_AL_RDY BIT(6) /* ALS data ready? */
+#define VCNL4000_PS_RDY BIT(5) /* proximity data ready? */
+#define VCNL4000_AL_OD BIT(4) /* start on-demand ALS measurement */
+#define VCNL4000_PS_OD BIT(3) /* start on-demand proximity measurement */
+
+struct vcnl4000_data {
+ struct i2c_client *client;
+ struct mutex lock;
+};
+
+static const struct i2c_device_id vcnl4000_id[] = {
+ { "vcnl4000", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, vcnl4000_id);
+
+static int vcnl4000_measure(struct vcnl4000_data *data, u8 req_mask,
+ u8 rdy_mask, u8 data_reg, int *val)
+{
+ int tries = 20;
+ int ret;
+
+ mutex_lock(&data->lock);
+
+ ret = i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND,
+ req_mask);
+ if (ret < 0)
+ goto fail;
+
+ /* wait for data to become ready */
+ while (tries--) {
+ ret = i2c_smbus_read_byte_data(data->client, VCNL4000_COMMAND);
+ if (ret < 0)
+ goto fail;
+ if (ret & rdy_mask)
+ break;
+ msleep(20); /* measurement takes up to 100 ms */
+ }
+
+ if (tries < 0) {
+ dev_err(&data->client->dev,
+ "vcnl4000_measure() failed, data not ready\n");
+ ret = -EIO;
+ goto fail;
+ }
+
+ ret = i2c_smbus_read_word_swapped(data->client, data_reg);
+ if (ret < 0)
+ goto fail;
+
+ mutex_unlock(&data->lock);
+ *val = ret;
+
+ return 0;
+
+fail:
+ mutex_unlock(&data->lock);
+ return ret;
+}
+
+static const struct iio_chan_spec vcnl4000_channels[] = {
+ {
+ .type = IIO_LIGHT,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_SCALE),
+ }, {
+ .type = IIO_PROXIMITY,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ }
+};
+
+static int vcnl4000_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long mask)
+{
+ int ret;
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ switch (chan->type) {
+ case IIO_LIGHT:
+ ret = vcnl4000_measure(data,
+ VCNL4000_AL_OD, VCNL4000_AL_RDY,
+ VCNL4000_AL_RESULT_HI, val);
+ if (ret < 0)
+ return ret;
+ return IIO_VAL_INT;
+ case IIO_PROXIMITY:
+ ret = vcnl4000_measure(data,
+ VCNL4000_PS_OD, VCNL4000_PS_RDY,
+ VCNL4000_PS_RESULT_HI, val);
+ if (ret < 0)
+ return ret;
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_SCALE:
+ if (chan->type != IIO_LIGHT)
+ return -EINVAL;
+
+ *val = 0;
+ *val2 = 250000;
+ return IIO_VAL_INT_PLUS_MICRO;
+ default:
+ return -EINVAL;
+ }
+}
+
+static const struct iio_info vcnl4000_info = {
+ .read_raw = vcnl4000_read_raw,
+ .driver_module = THIS_MODULE,
+};
+
+static int vcnl4000_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct vcnl4000_data *data;
+ struct iio_dev *indio_dev;
+ int ret, prod_id;
+
+ indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ data = iio_priv(indio_dev);
+ i2c_set_clientdata(client, indio_dev);
+ data->client = client;
+ mutex_init(&data->lock);
+
+ ret = i2c_smbus_read_byte_data(data->client, VCNL4000_PROD_REV);
+ if (ret < 0)
+ return ret;
+
+ prod_id = ret >> 4;
+ if (prod_id != VCNL4010_ID && prod_id != VCNL4000_ID)
+ return -ENODEV;
+
+ dev_dbg(&client->dev, "%s Ambient light/proximity sensor, Rev: %02x\n",
+ (prod_id == VCNL4010_ID) ? "VCNL4010/4020" : "VCNL4000",
+ ret & 0xf);
+
+ indio_dev->dev.parent = &client->dev;
+ indio_dev->info = &vcnl4000_info;
+ indio_dev->channels = vcnl4000_channels;
+ indio_dev->num_channels = ARRAY_SIZE(vcnl4000_channels);
+ indio_dev->name = VCNL4000_DRV_NAME;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+
+ return devm_iio_device_register(&client->dev, indio_dev);
+}
+
+static struct i2c_driver vcnl4000_driver = {
+ .driver = {
+ .name = VCNL4000_DRV_NAME,
+ },
+ .probe = vcnl4000_probe,
+ .id_table = vcnl4000_id,
+};
+
+module_i2c_driver(vcnl4000_driver);
+
+MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
+MODULE_DESCRIPTION("Vishay VCNL4000 proximity/ambient light sensor driver");
+MODULE_LICENSE("GPL");