#define DRIVER_NAME "adis16400"
+static int adis16400_check_status(struct device *dev);
+
/* At the moment the spi framework doesn't allow global setting of cs_change.
* It's in the likely to be added comment at the top of spi.h.
* This means that use cannot be made of spi_write etc.
return ret;
}
-/**
- * adis16400_spi_read_burst() - read all data registers
- * @dev: device associated with child of actual device (iio_dev or iio_trig)
- * @rx: somewhere to pass back the value read (min size is 24 bytes)
- **/
-int adis16400_spi_read_burst(struct device *dev, u8 *rx)
-{
- struct spi_message msg;
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct adis16400_state *st = iio_dev_get_devdata(indio_dev);
- u32 old_speed_hz = st->us->max_speed_hz;
- int ret;
-
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 0,
- }, {
- .rx_buf = rx,
- .bits_per_word = 8,
- .len = 24,
- .cs_change = 1,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16400_READ_REG(ADIS16400_GLOB_CMD);
- st->tx[1] = 0;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
-
- st->us->max_speed_hz = min(ADIS16400_SPI_BURST, old_speed_hz);
- spi_setup(st->us);
-
- ret = spi_sync(st->us, &msg);
- if (ret)
- dev_err(&st->us->dev, "problem when burst reading");
-
- st->us->max_speed_hz = old_speed_hz;
- spi_setup(st->us);
- mutex_unlock(&st->buf_lock);
- return ret;
-}
-
static ssize_t adis16400_spi_read_signed(struct device *dev,
struct device_attribute *attr,
char *buf,
return ret;
}
-
static ssize_t adis16400_write_16bit(struct device *dev,
struct device_attribute *attr,
const char *buf,
return ret ? ret : len;
}
+static int adis16400_reset(struct device *dev)
+{
+ int ret;
+ ret = adis16400_spi_write_reg_8(dev,
+ ADIS16400_GLOB_CMD,
+ ADIS16400_GLOB_CMD_SW_RESET);
+ if (ret)
+ dev_err(dev, "problem resetting device");
+
+ return ret;
+}
+
static ssize_t adis16400_write_reset(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t len)
return -1;
}
-
-
int adis16400_set_irq(struct device *dev, bool enable)
{
int ret;
return ret;
}
-int adis16400_reset(struct device *dev)
-{
- int ret;
- ret = adis16400_spi_write_reg_8(dev,
- ADIS16400_GLOB_CMD,
- ADIS16400_GLOB_CMD_SW_RESET);
- if (ret)
- dev_err(dev, "problem resetting device");
-
- return ret;
-}
-
/* Power down the device */
static int adis16400_stop_device(struct device *dev)
{
return ret;
}
-int adis16400_check_status(struct device *dev)
+static int adis16400_check_status(struct device *dev)
{
u16 status;
int ret;
}
/* Do self test */
+ ret = adis16400_self_test(dev);
+ if (ret) {
+ dev_err(dev, "self test failure");
+ goto err_ret;
+ }
/* Read status register to check the result */
ret = adis16400_check_status(dev);