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path: root/drivers/staging/iio/accel/adis16220_core.c
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Diffstat (limited to 'drivers/staging/iio/accel/adis16220_core.c')
-rw-r--r--drivers/staging/iio/accel/adis16220_core.c494
1 files changed, 0 insertions, 494 deletions
diff --git a/drivers/staging/iio/accel/adis16220_core.c b/drivers/staging/iio/accel/adis16220_core.c
deleted file mode 100644
index d0165218b60c..000000000000
--- a/drivers/staging/iio/accel/adis16220_core.c
+++ /dev/null
@@ -1,494 +0,0 @@
-/*
- * ADIS16220 Programmable Digital Vibration Sensor driver
- *
- * Copyright 2010 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#include <linux/delay.h>
-#include <linux/mutex.h>
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/module.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-
-#include "adis16220.h"
-
-static ssize_t adis16220_read_16bit(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
- struct adis16220_state *st = iio_priv(indio_dev);
- ssize_t ret;
- u16 val;
-
- /* Take the iio_dev status lock */
- mutex_lock(&indio_dev->mlock);
- ret = adis_read_reg_16(&st->adis, this_attr->address, &val);
- mutex_unlock(&indio_dev->mlock);
- if (ret)
- return ret;
- return sprintf(buf, "%u\n", val);
-}
-
-static ssize_t adis16220_write_16bit(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
- struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- struct adis16220_state *st = iio_priv(indio_dev);
- int ret;
- u16 val;
-
- ret = kstrtou16(buf, 10, &val);
- if (ret)
- goto error_ret;
- ret = adis_write_reg_16(&st->adis, this_attr->address, val);
-
-error_ret:
- return ret ? ret : len;
-}
-
-static int adis16220_capture(struct iio_dev *indio_dev)
-{
- struct adis16220_state *st = iio_priv(indio_dev);
- int ret;
-
- /* initiates a manual data capture */
- ret = adis_write_reg_16(&st->adis, ADIS16220_GLOB_CMD, 0xBF08);
- if (ret)
- dev_err(&indio_dev->dev, "problem beginning capture");
-
- usleep_range(10000, 11000); /* delay for capture to finish */
-
- return ret;
-}
-
-static ssize_t adis16220_write_capture(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t len)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
- bool val;
- int ret;
-
- ret = strtobool(buf, &val);
- if (ret)
- return ret;
- if (!val)
- return -EINVAL;
- ret = adis16220_capture(indio_dev);
- if (ret)
- return ret;
-
- return len;
-}
-
-static ssize_t adis16220_capture_buffer_read(struct iio_dev *indio_dev,
- char *buf,
- loff_t off,
- size_t count,
- int addr)
-{
- struct adis16220_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 25,
- }, {
- .tx_buf = st->tx,
- .rx_buf = st->rx,
- .bits_per_word = 8,
- .cs_change = 1,
- .delay_usecs = 25,
- },
- };
- int ret;
- int i;
-
- if (unlikely(!count))
- return count;
-
- if ((off >= ADIS16220_CAPTURE_SIZE) || (count & 1) || (off & 1))
- return -EINVAL;
-
- if (off + count > ADIS16220_CAPTURE_SIZE)
- count = ADIS16220_CAPTURE_SIZE - off;
-
- /* write the begin position of capture buffer */
- ret = adis_write_reg_16(&st->adis,
- ADIS16220_CAPT_PNTR,
- off > 1);
- if (ret)
- return -EIO;
-
- /* read count/2 values from capture buffer */
- mutex_lock(&st->buf_lock);
-
- for (i = 0; i < count; i += 2) {
- st->tx[i] = ADIS_READ_REG(addr);
- st->tx[i + 1] = 0;
- }
- xfers[1].len = count;
-
- ret = spi_sync_transfer(st->adis.spi, xfers, ARRAY_SIZE(xfers));
- if (ret) {
- mutex_unlock(&st->buf_lock);
- return -EIO;
- }
-
- memcpy(buf, st->rx, count);
-
- mutex_unlock(&st->buf_lock);
- return count;
-}
-
-static ssize_t adis16220_accel_bin_read(struct file *filp, struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf,
- loff_t off,
- size_t count)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(kobj_to_dev(kobj));
-
- return adis16220_capture_buffer_read(indio_dev, buf,
- off, count,
- ADIS16220_CAPT_BUFA);
-}
-
-static struct bin_attribute accel_bin = {
- .attr = {
- .name = "accel_bin",
- .mode = S_IRUGO,
- },
- .read = adis16220_accel_bin_read,
- .size = ADIS16220_CAPTURE_SIZE,
-};
-
-static ssize_t adis16220_adc1_bin_read(struct file *filp, struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(kobj_to_dev(kobj));
-
- return adis16220_capture_buffer_read(indio_dev, buf,
- off, count,
- ADIS16220_CAPT_BUF1);
-}
-
-static struct bin_attribute adc1_bin = {
- .attr = {
- .name = "in0_bin",
- .mode = S_IRUGO,
- },
- .read = adis16220_adc1_bin_read,
- .size = ADIS16220_CAPTURE_SIZE,
-};
-
-static ssize_t adis16220_adc2_bin_read(struct file *filp, struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(kobj_to_dev(kobj));
-
- return adis16220_capture_buffer_read(indio_dev, buf,
- off, count,
- ADIS16220_CAPT_BUF2);
-}
-
-static struct bin_attribute adc2_bin = {
- .attr = {
- .name = "in1_bin",
- .mode = S_IRUGO,
- },
- .read = adis16220_adc2_bin_read,
- .size = ADIS16220_CAPTURE_SIZE,
-};
-
-#define IIO_DEV_ATTR_CAPTURE(_store) \
- IIO_DEVICE_ATTR(capture, S_IWUSR, NULL, _store, 0)
-
-static IIO_DEV_ATTR_CAPTURE(adis16220_write_capture);
-
-#define IIO_DEV_ATTR_CAPTURE_COUNT(_mode, _show, _store, _addr) \
- IIO_DEVICE_ATTR(capture_count, _mode, _show, _store, _addr)
-
-static IIO_DEV_ATTR_CAPTURE_COUNT(S_IWUSR | S_IRUGO,
- adis16220_read_16bit,
- adis16220_write_16bit,
- ADIS16220_CAPT_PNTR);
-
-enum adis16220_channel {
- in_supply, in_1, in_2, accel, temp
-};
-
-struct adis16220_address_spec {
- u8 addr;
- u8 bits;
- bool sign;
-};
-
-/* Address / bits / signed */
-static const struct adis16220_address_spec adis16220_addresses[][3] = {
- [in_supply] = { { ADIS16220_CAPT_SUPPLY, 12, 0 }, },
- [in_1] = { { ADIS16220_CAPT_BUF1, 16, 1 },
- { ADIS16220_AIN1_NULL, 16, 1 },
- { ADIS16220_CAPT_PEAK1, 16, 1 }, },
- [in_2] = { { ADIS16220_CAPT_BUF2, 16, 1 },
- { ADIS16220_AIN2_NULL, 16, 1 },
- { ADIS16220_CAPT_PEAK2, 16, 1 }, },
- [accel] = { { ADIS16220_CAPT_BUFA, 16, 1 },
- { ADIS16220_ACCL_NULL, 16, 1 },
- { ADIS16220_CAPT_PEAKA, 16, 1 }, },
- [temp] = { { ADIS16220_CAPT_TEMP, 12, 0 }, }
-};
-
-static int adis16220_read_raw(struct iio_dev *indio_dev,
- struct iio_chan_spec const *chan,
- int *val, int *val2,
- long mask)
-{
- struct adis16220_state *st = iio_priv(indio_dev);
- const struct adis16220_address_spec *addr;
- int ret = -EINVAL;
- int addrind = 0;
- u16 uval;
- s16 sval;
- u8 bits;
-
- switch (mask) {
- case IIO_CHAN_INFO_RAW:
- addrind = 0;
- break;
- case IIO_CHAN_INFO_OFFSET:
- if (chan->type == IIO_TEMP) {
- *val = 25000 / -470 - 1278; /* 25 C = 1278 */
- return IIO_VAL_INT;
- }
- addrind = 1;
- break;
- case IIO_CHAN_INFO_PEAK:
- addrind = 2;
- break;
- case IIO_CHAN_INFO_SCALE:
- switch (chan->type) {
- case IIO_TEMP:
- *val = -470; /* -0.47 C */
- *val2 = 0;
- return IIO_VAL_INT_PLUS_MICRO;
- case IIO_ACCEL:
- *val2 = IIO_G_TO_M_S_2(19073); /* 19.073 g */
- return IIO_VAL_INT_PLUS_MICRO;
- case IIO_VOLTAGE:
- if (chan->channel == 0) {
- *val = 1;
- *val2 = 220700; /* 1.2207 mV */
- } else {
- /* Should really be dependent on VDD */
- *val2 = 305180; /* 305.18 uV */
- }
- return IIO_VAL_INT_PLUS_MICRO;
- default:
- return -EINVAL;
- }
- default:
- return -EINVAL;
- }
- addr = &adis16220_addresses[chan->address][addrind];
- if (addr->sign) {
- ret = adis_read_reg_16(&st->adis, addr->addr, &sval);
- if (ret)
- return ret;
- bits = addr->bits;
- sval &= (1 << bits) - 1;
- sval = (s16)(sval << (16 - bits)) >> (16 - bits);
- *val = sval;
- return IIO_VAL_INT;
- }
- ret = adis_read_reg_16(&st->adis, addr->addr, &uval);
- if (ret)
- return ret;
- bits = addr->bits;
- uval &= (1 << bits) - 1;
- *val = uval;
- return IIO_VAL_INT;
-}
-
-static const struct iio_chan_spec adis16220_channels[] = {
- {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .extend_name = "supply",
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
- BIT(IIO_CHAN_INFO_SCALE),
- .address = in_supply,
- }, {
- .type = IIO_ACCEL,
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
- BIT(IIO_CHAN_INFO_OFFSET) |
- BIT(IIO_CHAN_INFO_SCALE) |
- BIT(IIO_CHAN_INFO_PEAK),
- .address = accel,
- }, {
- .type = IIO_TEMP,
- .indexed = 1,
- .channel = 0,
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
- BIT(IIO_CHAN_INFO_OFFSET) |
- BIT(IIO_CHAN_INFO_SCALE),
- .address = temp,
- }, {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
- BIT(IIO_CHAN_INFO_OFFSET) |
- BIT(IIO_CHAN_INFO_SCALE),
- .address = in_1,
- }, {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 2,
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
- .address = in_2,
- }
-};
-
-static struct attribute *adis16220_attributes[] = {
- &iio_dev_attr_capture.dev_attr.attr,
- &iio_dev_attr_capture_count.dev_attr.attr,
- NULL
-};
-
-static const struct attribute_group adis16220_attribute_group = {
- .attrs = adis16220_attributes,
-};
-
-static const struct iio_info adis16220_info = {
- .attrs = &adis16220_attribute_group,
- .driver_module = THIS_MODULE,
- .read_raw = &adis16220_read_raw,
-};
-
-static const char * const adis16220_status_error_msgs[] = {
- [ADIS16220_DIAG_STAT_VIOLATION_BIT] = "Capture period violation/interruption",
- [ADIS16220_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
- [ADIS16220_DIAG_STAT_FLASH_UPT_BIT] = "Flash update failed",
- [ADIS16220_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
- [ADIS16220_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 3.15V",
-};
-
-static const struct adis_data adis16220_data = {
- .read_delay = 35,
- .write_delay = 35,
- .msc_ctrl_reg = ADIS16220_MSC_CTRL,
- .glob_cmd_reg = ADIS16220_GLOB_CMD,
- .diag_stat_reg = ADIS16220_DIAG_STAT,
-
- .self_test_mask = ADIS16220_MSC_CTRL_SELF_TEST_EN,
- .startup_delay = ADIS16220_STARTUP_DELAY,
-
- .status_error_msgs = adis16220_status_error_msgs,
- .status_error_mask = BIT(ADIS16220_DIAG_STAT_VIOLATION_BIT) |
- BIT(ADIS16220_DIAG_STAT_SPI_FAIL_BIT) |
- BIT(ADIS16220_DIAG_STAT_FLASH_UPT_BIT) |
- BIT(ADIS16220_DIAG_STAT_POWER_HIGH_BIT) |
- BIT(ADIS16220_DIAG_STAT_POWER_LOW_BIT),
-};
-
-static int adis16220_probe(struct spi_device *spi)
-{
- int ret;
- struct adis16220_state *st;
- struct iio_dev *indio_dev;
-
- /* setup the industrialio driver allocated elements */
- indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
- if (!indio_dev)
- return -ENOMEM;
-
- st = iio_priv(indio_dev);
- /* this is only used for removal purposes */
- spi_set_drvdata(spi, indio_dev);
-
- indio_dev->name = spi->dev.driver->name;
- indio_dev->dev.parent = &spi->dev;
- indio_dev->info = &adis16220_info;
- indio_dev->modes = INDIO_DIRECT_MODE;
- indio_dev->channels = adis16220_channels;
- indio_dev->num_channels = ARRAY_SIZE(adis16220_channels);
-
- ret = devm_iio_device_register(&spi->dev, indio_dev);
- if (ret)
- return ret;
-
- ret = sysfs_create_bin_file(&indio_dev->dev.kobj, &accel_bin);
- if (ret)
- return ret;
-
- ret = sysfs_create_bin_file(&indio_dev->dev.kobj, &adc1_bin);
- if (ret)
- goto error_rm_accel_bin;
-
- ret = sysfs_create_bin_file(&indio_dev->dev.kobj, &adc2_bin);
- if (ret)
- goto error_rm_adc1_bin;
-
- ret = adis_init(&st->adis, indio_dev, spi, &adis16220_data);
- if (ret)
- goto error_rm_adc2_bin;
- /* Get the device into a sane initial state */
- ret = adis_initial_startup(&st->adis);
- if (ret)
- goto error_rm_adc2_bin;
- return 0;
-
-error_rm_adc2_bin:
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &adc2_bin);
-error_rm_adc1_bin:
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &adc1_bin);
-error_rm_accel_bin:
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &accel_bin);
- return ret;
-}
-
-static int adis16220_remove(struct spi_device *spi)
-{
- struct iio_dev *indio_dev = spi_get_drvdata(spi);
-
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &adc2_bin);
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &adc1_bin);
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &accel_bin);
-
- return 0;
-}
-
-static struct spi_driver adis16220_driver = {
- .driver = {
- .name = "adis16220",
- },
- .probe = adis16220_probe,
- .remove = adis16220_remove,
-};
-module_spi_driver(adis16220_driver);
-
-MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
-MODULE_DESCRIPTION("Analog Devices ADIS16220 Digital Vibration Sensor");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("spi:adis16220");
generated by cgit v1.2.3 (git 2.0.4) at 2024-07-04 01:09:39 +0000