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staging:iio:imu:adis16400 move to irq based triggers and channel spec channel registration.
V2: rebase fixup. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jonathan Cameron
Greg Kroah-Hartman
parent
3f00ca47fc
commit
e78548455d
@ -126,9 +126,6 @@
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/**
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* struct adis16400_state - device instance specific data
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* @us: actual spi_device
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* @work_trigger_to_ring: bh for triggered event handling
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* @inter: used to check if new interrupt has been triggered
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* @last_timestamp: passing timestamp from th to bh of interrupt handler
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* @indio_dev: industrial I/O device structure
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* @trig: data ready trigger registered with iio
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* @tx: transmit buffer
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@ -137,8 +134,6 @@
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**/
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struct adis16400_state {
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struct spi_device *us;
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struct work_struct work_trigger_to_ring;
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s64 last_timestamp;
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struct iio_dev *indio_dev;
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struct iio_trigger *trig;
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u8 *tx;
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@ -146,7 +141,7 @@ struct adis16400_state {
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struct mutex buf_lock;
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};
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int adis16400_set_irq(struct device *dev, bool enable);
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int adis16400_set_irq(struct iio_dev *indio_dev, bool enable);
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#ifdef CONFIG_IIO_RING_BUFFER
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/* At the moment triggers are only used for ring buffer
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@ -38,7 +38,7 @@
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#define DRIVER_NAME "adis16400"
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static int adis16400_check_status(struct device *dev);
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static int adis16400_check_status(struct iio_dev *indio_dev);
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/* At the moment the spi framework doesn't allow global setting of cs_change.
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* It's in the likely to be added comment at the top of spi.h.
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@ -51,12 +51,11 @@ static int adis16400_check_status(struct device *dev);
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* @reg_address: the address of the register to be written
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* @val: the value to write
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**/
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static int adis16400_spi_write_reg_8(struct device *dev,
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u8 reg_address,
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u8 val)
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static int adis16400_spi_write_reg_8(struct iio_dev *indio_dev,
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u8 reg_address,
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u8 val)
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{
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int ret;
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struct iio_dev *indio_dev = dev_get_drvdata(dev);
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struct adis16400_state *st = iio_dev_get_devdata(indio_dev);
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mutex_lock(&st->buf_lock);
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@ -76,13 +75,12 @@ static int adis16400_spi_write_reg_8(struct device *dev,
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* is assumed to have address one greater.
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* @val: value to be written
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**/
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static int adis16400_spi_write_reg_16(struct device *dev,
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static int adis16400_spi_write_reg_16(struct iio_dev *indio_dev,
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u8 lower_reg_address,
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u16 value)
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{
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int ret;
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struct spi_message msg;
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struct iio_dev *indio_dev = dev_get_drvdata(dev);
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struct adis16400_state *st = iio_dev_get_devdata(indio_dev);
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struct spi_transfer xfers[] = {
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{
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@ -114,17 +112,16 @@ static int adis16400_spi_write_reg_16(struct device *dev,
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/**
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* adis16400_spi_read_reg_16() - read 2 bytes from a 16-bit register
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* @dev: device associated with child of actual device (iio_dev or iio_trig)
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* @indio_dev: iio device
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* @reg_address: the address of the lower of the two registers. Second register
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* is assumed to have address one greater.
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* @val: somewhere to pass back the value read
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**/
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static int adis16400_spi_read_reg_16(struct device *dev,
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static int adis16400_spi_read_reg_16(struct iio_dev *indio_dev,
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u8 lower_reg_address,
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u16 *val)
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{
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struct spi_message msg;
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struct iio_dev *indio_dev = dev_get_drvdata(dev);
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struct adis16400_state *st = iio_dev_get_devdata(indio_dev);
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int ret;
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struct spi_transfer xfers[] = {
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@ -163,100 +160,15 @@ error_ret:
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return ret;
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}
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static ssize_t adis16400_spi_read_signed(struct device *dev,
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struct device_attribute *attr,
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char *buf,
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unsigned bits)
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{
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int ret;
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s16 val = 0;
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unsigned shift = 16 - bits;
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struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
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ret = adis16400_spi_read_reg_16(dev, this_attr->address, (u16 *)&val);
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if (ret)
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return ret;
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if (val & ADIS16400_ERROR_ACTIVE)
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adis16400_check_status(dev);
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val = ((s16)(val << shift) >> shift);
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return sprintf(buf, "%d\n", val);
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}
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static ssize_t adis16400_read_12bit_unsigned(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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int ret;
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u16 val = 0;
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struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
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ret = adis16400_spi_read_reg_16(dev, this_attr->address, &val);
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if (ret)
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return ret;
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if (val & ADIS16400_ERROR_ACTIVE)
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adis16400_check_status(dev);
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return sprintf(buf, "%u\n", val & 0x0FFF);
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}
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static ssize_t adis16400_read_14bit_signed(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct iio_dev *indio_dev = dev_get_drvdata(dev);
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ssize_t ret;
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/* Take the iio_dev status lock */
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mutex_lock(&indio_dev->mlock);
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ret = adis16400_spi_read_signed(dev, attr, buf, 14);
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mutex_unlock(&indio_dev->mlock);
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return ret;
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}
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static ssize_t adis16400_read_12bit_signed(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct iio_dev *indio_dev = dev_get_drvdata(dev);
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ssize_t ret;
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/* Take the iio_dev status lock */
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mutex_lock(&indio_dev->mlock);
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ret = adis16400_spi_read_signed(dev, attr, buf, 12);
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mutex_unlock(&indio_dev->mlock);
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return ret;
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}
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static ssize_t adis16400_write_16bit(struct device *dev,
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struct device_attribute *attr,
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const char *buf,
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size_t len)
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{
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struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
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int ret;
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long val;
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ret = strict_strtol(buf, 10, &val);
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if (ret)
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goto error_ret;
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ret = adis16400_spi_write_reg_16(dev, this_attr->address, val);
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error_ret:
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return ret ? ret : len;
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}
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static ssize_t adis16400_read_frequency(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct iio_dev *indio_dev = dev_get_drvdata(dev);
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int ret, len = 0;
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u16 t;
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int sps;
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ret = adis16400_spi_read_reg_16(dev,
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ret = adis16400_spi_read_reg_16(indio_dev,
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ADIS16400_SMPL_PRD,
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&t);
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if (ret)
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@ -293,7 +205,7 @@ static ssize_t adis16400_write_frequency(struct device *dev,
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else
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st->us->max_speed_hz = ADIS16400_SPI_FAST;
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ret = adis16400_spi_write_reg_8(dev,
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ret = adis16400_spi_write_reg_8(indio_dev,
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ADIS16400_SMPL_PRD,
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t);
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@ -302,14 +214,14 @@ static ssize_t adis16400_write_frequency(struct device *dev,
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return ret ? ret : len;
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}
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static int adis16400_reset(struct device *dev)
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static int adis16400_reset(struct iio_dev *indio_dev)
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{
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int ret;
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ret = adis16400_spi_write_reg_8(dev,
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ret = adis16400_spi_write_reg_8(indio_dev,
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ADIS16400_GLOB_CMD,
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ADIS16400_GLOB_CMD_SW_RESET);
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if (ret)
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dev_err(dev, "problem resetting device");
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dev_err(&indio_dev->dev, "problem resetting device");
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return ret;
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}
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@ -318,22 +230,24 @@ static ssize_t adis16400_write_reset(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t len)
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{
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struct iio_dev *indio_dev = dev_get_drvdata(dev);
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if (len < 1)
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return -1;
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switch (buf[0]) {
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case '1':
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case 'y':
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case 'Y':
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return adis16400_reset(dev);
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return adis16400_reset(indio_dev);
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}
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return -1;
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}
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int adis16400_set_irq(struct device *dev, bool enable)
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int adis16400_set_irq(struct iio_dev *indio_dev, bool enable)
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{
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int ret;
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u16 msc;
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ret = adis16400_spi_read_reg_16(dev, ADIS16400_MSC_CTRL, &msc);
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ret = adis16400_spi_read_reg_16(indio_dev, ADIS16400_MSC_CTRL, &msc);
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if (ret)
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goto error_ret;
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@ -343,7 +257,7 @@ int adis16400_set_irq(struct device *dev, bool enable)
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else
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msc &= ~ADIS16400_MSC_CTRL_DATA_RDY_EN;
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ret = adis16400_spi_write_reg_16(dev, ADIS16400_MSC_CTRL, msc);
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ret = adis16400_spi_write_reg_16(indio_dev, ADIS16400_MSC_CTRL, msc);
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if (ret)
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goto error_ret;
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@ -352,41 +266,45 @@ error_ret:
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}
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/* Power down the device */
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static int adis16400_stop_device(struct device *dev)
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static int adis16400_stop_device(struct iio_dev *indio_dev)
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{
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int ret;
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u16 val = ADIS16400_SLP_CNT_POWER_OFF;
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ret = adis16400_spi_write_reg_16(dev, ADIS16400_SLP_CNT, val);
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ret = adis16400_spi_write_reg_16(indio_dev, ADIS16400_SLP_CNT, val);
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if (ret)
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dev_err(dev, "problem with turning device off: SLP_CNT");
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dev_err(&indio_dev->dev,
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"problem with turning device off: SLP_CNT");
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return ret;
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}
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static int adis16400_self_test(struct device *dev)
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static int adis16400_self_test(struct iio_dev *indio_dev)
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{
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int ret;
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ret = adis16400_spi_write_reg_16(dev,
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ret = adis16400_spi_write_reg_16(indio_dev,
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ADIS16400_MSC_CTRL,
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ADIS16400_MSC_CTRL_MEM_TEST);
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if (ret) {
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dev_err(dev, "problem starting self test");
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dev_err(&indio_dev->dev, "problem starting self test");
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goto err_ret;
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}
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msleep(ADIS16400_MTEST_DELAY);
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adis16400_check_status(dev);
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adis16400_check_status(indio_dev);
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err_ret:
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return ret;
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}
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static int adis16400_check_status(struct device *dev)
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static int adis16400_check_status(struct iio_dev *indio_dev)
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{
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u16 status;
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int ret;
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struct device *dev = &indio_dev->dev;
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ret = adis16400_spi_read_reg_16(dev, ADIS16400_DIAG_STAT, &status);
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ret = adis16400_spi_read_reg_16(indio_dev,
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ADIS16400_DIAG_STAT, &status);
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if (ret < 0) {
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dev_err(dev, "Reading status failed\n");
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@ -440,33 +358,34 @@ static int adis16400_initial_setup(struct adis16400_state *st)
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spi_setup(st->us);
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/* Disable IRQ */
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ret = adis16400_set_irq(dev, false);
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ret = adis16400_set_irq(st->indio_dev, false);
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if (ret) {
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dev_err(dev, "disable irq failed");
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goto err_ret;
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}
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/* Do self test */
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ret = adis16400_self_test(dev);
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ret = adis16400_self_test(st->indio_dev);
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if (ret) {
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dev_err(dev, "self test failure");
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goto err_ret;
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}
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/* Read status register to check the result */
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ret = adis16400_check_status(dev);
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ret = adis16400_check_status(st->indio_dev);
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if (ret) {
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adis16400_reset(dev);
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adis16400_reset(st->indio_dev);
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dev_err(dev, "device not playing ball -> reset");
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msleep(ADIS16400_STARTUP_DELAY);
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ret = adis16400_check_status(dev);
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ret = adis16400_check_status(st->indio_dev);
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if (ret) {
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dev_err(dev, "giving up");
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goto err_ret;
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}
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}
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ret = adis16400_spi_read_reg_16(dev, ADIS16400_PRODUCT_ID, &prod_id);
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ret = adis16400_spi_read_reg_16(st->indio_dev,
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ADIS16400_PRODUCT_ID, &prod_id);
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if (ret)
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goto err_ret;
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@ -478,7 +397,8 @@ static int adis16400_initial_setup(struct adis16400_state *st)
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prod_id, st->us->chip_select, st->us->irq);
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/* use high spi speed if possible */
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ret = adis16400_spi_read_reg_16(dev, ADIS16400_SMPL_PRD, &smp_prd);
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ret = adis16400_spi_read_reg_16(st->indio_dev,
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ADIS16400_SMPL_PRD, &smp_prd);
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if (!ret && (smp_prd & ADIS16400_SMPL_PRD_DIV_MASK) < 0x0A) {
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st->us->max_speed_hz = ADIS16400_SPI_SLOW;
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spi_setup(st->us);
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@ -490,58 +410,6 @@ err_ret:
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return ret;
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}
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#define ADIS16400_DEV_ATTR_CALIBBIAS(_channel, _reg) \
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IIO_DEV_ATTR_##_channel##_CALIBBIAS(S_IWUSR | S_IRUGO, \
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adis16400_read_12bit_signed, \
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adis16400_write_16bit, \
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_reg)
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static ADIS16400_DEV_ATTR_CALIBBIAS(GYRO_X, ADIS16400_XGYRO_OFF);
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static ADIS16400_DEV_ATTR_CALIBBIAS(GYRO_Y, ADIS16400_YGYRO_OFF);
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static ADIS16400_DEV_ATTR_CALIBBIAS(GYRO_Z, ADIS16400_ZGYRO_OFF);
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static ADIS16400_DEV_ATTR_CALIBBIAS(ACCEL_X, ADIS16400_XACCL_OFF);
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static ADIS16400_DEV_ATTR_CALIBBIAS(ACCEL_Y, ADIS16400_YACCL_OFF);
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static ADIS16400_DEV_ATTR_CALIBBIAS(ACCEL_Z, ADIS16400_ZACCL_OFF);
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static IIO_DEV_ATTR_IN_NAMED_RAW(0, supply, adis16400_read_14bit_signed,
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ADIS16400_SUPPLY_OUT);
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static IIO_CONST_ATTR_IN_NAMED_SCALE(0, supply, "0.002418 V");
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static IIO_DEV_ATTR_GYRO_X(adis16400_read_14bit_signed,
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ADIS16400_XGYRO_OUT);
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static IIO_DEV_ATTR_GYRO_Y(adis16400_read_14bit_signed,
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ADIS16400_YGYRO_OUT);
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static IIO_DEV_ATTR_GYRO_Z(adis16400_read_14bit_signed,
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ADIS16400_ZGYRO_OUT);
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static IIO_CONST_ATTR(gyro_scale, "0.0008726646");
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static IIO_DEV_ATTR_ACCEL_X(adis16400_read_14bit_signed,
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ADIS16400_XACCL_OUT);
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static IIO_DEV_ATTR_ACCEL_Y(adis16400_read_14bit_signed,
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ADIS16400_YACCL_OUT);
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static IIO_DEV_ATTR_ACCEL_Z(adis16400_read_14bit_signed,
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ADIS16400_ZACCL_OUT);
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static IIO_CONST_ATTR(accel_scale, "0.0326561445");
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static IIO_DEV_ATTR_MAGN_X(adis16400_read_14bit_signed,
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ADIS16400_XMAGN_OUT);
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static IIO_DEV_ATTR_MAGN_Y(adis16400_read_14bit_signed,
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ADIS16400_YMAGN_OUT);
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static IIO_DEV_ATTR_MAGN_Z(adis16400_read_14bit_signed,
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ADIS16400_ZMAGN_OUT);
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static IIO_CONST_ATTR(magn_scale, "0.0005 Gs");
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static IIO_DEV_ATTR_TEMP_RAW(adis16400_read_12bit_signed);
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static IIO_CONST_ATTR_TEMP_OFFSET("198.16 K");
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static IIO_CONST_ATTR_TEMP_SCALE("0.14 K");
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static IIO_DEV_ATTR_IN_RAW(1, adis16400_read_12bit_unsigned,
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ADIS16400_AUX_ADC);
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static IIO_CONST_ATTR(in1_scale, "0.000806 V");
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|
||||
static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO,
|
||||
adis16400_read_frequency,
|
||||
adis16400_write_frequency);
|
||||
@ -552,32 +420,184 @@ static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("409 546 819 1638");
|
||||
|
||||
static IIO_CONST_ATTR_NAME("adis16400");
|
||||
|
||||
enum adis16400_chan {
|
||||
in_supply,
|
||||
gyro_x,
|
||||
gyro_y,
|
||||
gyro_z,
|
||||
accel_x,
|
||||
accel_y,
|
||||
accel_z,
|
||||
magn_x,
|
||||
magn_y,
|
||||
magn_z,
|
||||
temp,
|
||||
in1
|
||||
};
|
||||
|
||||
static u8 adis16400_addresses[12][2] = {
|
||||
[in_supply] = { ADIS16400_SUPPLY_OUT, 0 },
|
||||
[gyro_x] = { ADIS16400_XGYRO_OUT, ADIS16400_XGYRO_OFF },
|
||||
[gyro_y] = { ADIS16400_YGYRO_OUT, ADIS16400_YGYRO_OFF },
|
||||
[gyro_z] = { ADIS16400_ZGYRO_OUT, ADIS16400_ZGYRO_OFF },
|
||||
[accel_x] = { ADIS16400_XACCL_OUT, ADIS16400_XACCL_OFF },
|
||||
[accel_y] = { ADIS16400_YACCL_OUT, ADIS16400_YACCL_OFF },
|
||||
[accel_z] = { ADIS16400_ZACCL_OUT, ADIS16400_ZACCL_OFF },
|
||||
[magn_x] = { ADIS16400_XMAGN_OUT, 0 },
|
||||
[magn_y] = { ADIS16400_YMAGN_OUT, 0 },
|
||||
[magn_z] = { ADIS16400_ZMAGN_OUT, 0 },
|
||||
[temp] = { ADIS16400_TEMP_OUT, 0 },
|
||||
[in1] = { ADIS16400_AUX_ADC , 0 },
|
||||
};
|
||||
|
||||
static int adis16400_write_raw(struct iio_dev *indio_dev,
|
||||
struct iio_chan_spec const *chan,
|
||||
int val,
|
||||
int val2,
|
||||
long mask)
|
||||
{
|
||||
int ret;
|
||||
switch (mask) {
|
||||
case (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE):
|
||||
mutex_lock(&indio_dev->mlock);
|
||||
ret = adis16400_spi_write_reg_16(indio_dev,
|
||||
adis16400_addresses[chan->address][1],
|
||||
val);
|
||||
mutex_unlock(&indio_dev->mlock);
|
||||
return ret;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
static int adis16400_read_raw(struct iio_dev *indio_dev,
|
||||
struct iio_chan_spec const *chan,
|
||||
int *val,
|
||||
int *val2,
|
||||
long mask)
|
||||
{
|
||||
int ret;
|
||||
s16 val16;
|
||||
int shift;
|
||||
|
||||
switch (mask) {
|
||||
case 0:
|
||||
mutex_lock(&indio_dev->mlock);
|
||||
ret = adis16400_spi_read_reg_16(indio_dev,
|
||||
adis16400_addresses[chan->address][0],
|
||||
&val16);
|
||||
if (ret) {
|
||||
mutex_unlock(&indio_dev->mlock);
|
||||
return ret;
|
||||
}
|
||||
val16 &= (1 << chan->scan_type.realbits) - 1;
|
||||
if (chan->scan_type.sign == 's') {
|
||||
shift = 16 - chan->scan_type.realbits;
|
||||
val16 = (s16)(val16 << shift) >> shift;
|
||||
}
|
||||
*val = val16;
|
||||
mutex_unlock(&indio_dev->mlock);
|
||||
return IIO_VAL_INT;
|
||||
case (1 << IIO_CHAN_INFO_SCALE_SHARED):
|
||||
case (1 << IIO_CHAN_INFO_SCALE_SEPARATE):
|
||||
switch (chan->type) {
|
||||
case IIO_GYRO:
|
||||
*val = 0;
|
||||
*val2 = 873;
|
||||
return IIO_VAL_INT_PLUS_MICRO;
|
||||
case IIO_IN:
|
||||
*val = 0;
|
||||
if (chan->channel == 0)
|
||||
*val2 = 2418;
|
||||
else
|
||||
*val2 = 806;
|
||||
return IIO_VAL_INT_PLUS_MICRO;
|
||||
case IIO_ACCEL:
|
||||
*val = 0;
|
||||
*val2 = 32656;
|
||||
return IIO_VAL_INT_PLUS_MICRO;
|
||||
case IIO_MAGN:
|
||||
*val = 0;
|
||||
*val2 = 500;
|
||||
return IIO_VAL_INT_PLUS_MICRO;
|
||||
case IIO_TEMP:
|
||||
*val = 0;
|
||||
*val2 = 140000;
|
||||
return IIO_VAL_INT_PLUS_MICRO;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
case (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE):
|
||||
mutex_lock(&indio_dev->mlock);
|
||||
ret = adis16400_spi_read_reg_16(indio_dev,
|
||||
adis16400_addresses[chan->address][1],
|
||||
&val16);
|
||||
if (ret) {
|
||||
mutex_unlock(&indio_dev->mlock);
|
||||
return ret;
|
||||
}
|
||||
val16 = ((val16 & 0xFFF) << 4) >> 4;
|
||||
*val = val16;
|
||||
return IIO_VAL_INT;
|
||||
case (1 << IIO_CHAN_INFO_OFFSET_SEPARATE):
|
||||
/* currently only temperature */
|
||||
*val = 198;
|
||||
*val2 = 160000;
|
||||
return IIO_VAL_INT_PLUS_MICRO;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
static struct iio_chan_spec adis16400_channels[] = {
|
||||
IIO_CHAN(IIO_IN, 0, 1, 0, "supply", 0, 0,
|
||||
(1 << IIO_CHAN_INFO_SCALE_SEPARATE),
|
||||
in_supply, ADIS16400_SCAN_SUPPLY,
|
||||
IIO_ST('u', 14, 16, 0), 0),
|
||||
IIO_CHAN(IIO_GYRO, 1, 0, 0, NULL, 0, IIO_MOD_X,
|
||||
(1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
|
||||
(1 << IIO_CHAN_INFO_SCALE_SHARED),
|
||||
gyro_x, ADIS16400_SCAN_GYRO_X, IIO_ST('s', 14, 16, 0), 0),
|
||||
IIO_CHAN(IIO_GYRO, 1, 0, 0, NULL, 0, IIO_MOD_Y,
|
||||
(1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
|
||||
(1 << IIO_CHAN_INFO_SCALE_SHARED),
|
||||
gyro_y, ADIS16400_SCAN_GYRO_Y, IIO_ST('s', 14, 16, 0), 0),
|
||||
IIO_CHAN(IIO_GYRO, 1, 0, 0, NULL, 0, IIO_MOD_Z,
|
||||
(1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
|
||||
(1 << IIO_CHAN_INFO_SCALE_SHARED),
|
||||
gyro_z, ADIS16400_SCAN_GYRO_Z, IIO_ST('s', 14, 16, 0), 0),
|
||||
IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_X,
|
||||
(1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
|
||||
(1 << IIO_CHAN_INFO_SCALE_SHARED),
|
||||
accel_x, ADIS16400_SCAN_ACC_X, IIO_ST('s', 14, 16, 0), 0),
|
||||
IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_Y,
|
||||
(1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
|
||||
(1 << IIO_CHAN_INFO_SCALE_SHARED),
|
||||
accel_y, ADIS16400_SCAN_ACC_Y, IIO_ST('s', 14, 16, 0), 0),
|
||||
IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_Z,
|
||||
(1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
|
||||
(1 << IIO_CHAN_INFO_SCALE_SHARED),
|
||||
accel_z, ADIS16400_SCAN_ACC_Z, IIO_ST('s', 14, 16, 0), 0),
|
||||
IIO_CHAN(IIO_MAGN, 1, 0, 0, NULL, 0, IIO_MOD_X,
|
||||
(1 << IIO_CHAN_INFO_SCALE_SHARED),
|
||||
magn_x, ADIS16400_SCAN_MAGN_X, IIO_ST('s', 14, 16, 0), 0),
|
||||
IIO_CHAN(IIO_MAGN, 1, 0, 0, NULL, 0, IIO_MOD_Y,
|
||||
(1 << IIO_CHAN_INFO_SCALE_SHARED),
|
||||
magn_y, ADIS16400_SCAN_MAGN_Y, IIO_ST('s', 14, 16, 0), 0),
|
||||
IIO_CHAN(IIO_MAGN, 1, 0, 0, NULL, 0, IIO_MOD_Z,
|
||||
(1 << IIO_CHAN_INFO_SCALE_SHARED),
|
||||
magn_z, ADIS16400_SCAN_MAGN_Z, IIO_ST('s', 14, 16, 0), 0),
|
||||
IIO_CHAN(IIO_TEMP, 0, 1, 0, NULL, 0, 0,
|
||||
(1 << IIO_CHAN_INFO_OFFSET_SEPARATE) |
|
||||
(1 << IIO_CHAN_INFO_SCALE_SEPARATE),
|
||||
temp, ADIS16400_SCAN_TEMP, IIO_ST('s', 12, 16, 0), 0),
|
||||
IIO_CHAN(IIO_IN, 0, 1, 0, NULL, 1, 0,
|
||||
(1 << IIO_CHAN_INFO_SCALE_SEPARATE),
|
||||
in1, ADIS16400_SCAN_ADC_0, IIO_ST('s', 12, 16, 0), 0),
|
||||
IIO_CHAN_SOFT_TIMESTAMP(12)
|
||||
};
|
||||
|
||||
static struct attribute *adis16400_attributes[] = {
|
||||
&iio_dev_attr_gyro_x_calibbias.dev_attr.attr,
|
||||
&iio_dev_attr_gyro_y_calibbias.dev_attr.attr,
|
||||
&iio_dev_attr_gyro_z_calibbias.dev_attr.attr,
|
||||
&iio_dev_attr_accel_x_calibbias.dev_attr.attr,
|
||||
&iio_dev_attr_accel_y_calibbias.dev_attr.attr,
|
||||
&iio_dev_attr_accel_z_calibbias.dev_attr.attr,
|
||||
&iio_dev_attr_in0_supply_raw.dev_attr.attr,
|
||||
&iio_const_attr_in0_supply_scale.dev_attr.attr,
|
||||
&iio_dev_attr_gyro_x_raw.dev_attr.attr,
|
||||
&iio_dev_attr_gyro_y_raw.dev_attr.attr,
|
||||
&iio_dev_attr_gyro_z_raw.dev_attr.attr,
|
||||
&iio_const_attr_gyro_scale.dev_attr.attr,
|
||||
&iio_dev_attr_accel_x_raw.dev_attr.attr,
|
||||
&iio_dev_attr_accel_y_raw.dev_attr.attr,
|
||||
&iio_dev_attr_accel_z_raw.dev_attr.attr,
|
||||
&iio_const_attr_accel_scale.dev_attr.attr,
|
||||
&iio_dev_attr_magn_x_raw.dev_attr.attr,
|
||||
&iio_dev_attr_magn_y_raw.dev_attr.attr,
|
||||
&iio_dev_attr_magn_z_raw.dev_attr.attr,
|
||||
&iio_const_attr_magn_scale.dev_attr.attr,
|
||||
&iio_dev_attr_temp_raw.dev_attr.attr,
|
||||
&iio_const_attr_temp_offset.dev_attr.attr,
|
||||
&iio_const_attr_temp_scale.dev_attr.attr,
|
||||
&iio_dev_attr_in1_raw.dev_attr.attr,
|
||||
&iio_const_attr_in1_scale.dev_attr.attr,
|
||||
&iio_dev_attr_sampling_frequency.dev_attr.attr,
|
||||
&iio_const_attr_sampling_frequency_available.dev_attr.attr,
|
||||
&iio_dev_attr_reset.dev_attr.attr,
|
||||
@ -622,6 +642,10 @@ static int __devinit adis16400_probe(struct spi_device *spi)
|
||||
|
||||
st->indio_dev->dev.parent = &spi->dev;
|
||||
st->indio_dev->attrs = &adis16400_attribute_group;
|
||||
st->indio_dev->channels = adis16400_channels;
|
||||
st->indio_dev->num_channels = ARRAY_SIZE(adis16400_channels);
|
||||
st->indio_dev->read_raw = &adis16400_read_raw;
|
||||
st->indio_dev->write_raw = &adis16400_write_raw;
|
||||
st->indio_dev->dev_data = (void *)(st);
|
||||
st->indio_dev->driver_module = THIS_MODULE;
|
||||
st->indio_dev->modes = INDIO_DIRECT_MODE;
|
||||
@ -682,12 +706,10 @@ static int adis16400_remove(struct spi_device *spi)
|
||||
struct adis16400_state *st = spi_get_drvdata(spi);
|
||||
struct iio_dev *indio_dev = st->indio_dev;
|
||||
|
||||
ret = adis16400_stop_device(&(indio_dev->dev));
|
||||
ret = adis16400_stop_device(indio_dev);
|
||||
if (ret)
|
||||
goto err_ret;
|
||||
|
||||
flush_scheduled_work();
|
||||
|
||||
adis16400_remove_trigger(indio_dev);
|
||||
iio_ring_buffer_unregister(st->indio_dev->ring);
|
||||
adis16400_unconfigure_ring(indio_dev);
|
||||
|
||||
@ -17,93 +17,6 @@
|
||||
#include "../trigger.h"
|
||||
#include "adis16400.h"
|
||||
|
||||
static IIO_SCAN_EL_C(in0_supply, ADIS16400_SCAN_SUPPLY,
|
||||
ADIS16400_SUPPLY_OUT, NULL);
|
||||
static IIO_CONST_ATTR_SCAN_EL_TYPE(in0_supply, u, 14, 16);
|
||||
|
||||
static IIO_SCAN_EL_C(gyro_x, ADIS16400_SCAN_GYRO_X, ADIS16400_XGYRO_OUT, NULL);
|
||||
static IIO_SCAN_EL_C(gyro_y, ADIS16400_SCAN_GYRO_Y, ADIS16400_YGYRO_OUT, NULL);
|
||||
static IIO_SCAN_EL_C(gyro_z, ADIS16400_SCAN_GYRO_Z, ADIS16400_ZGYRO_OUT, NULL);
|
||||
static IIO_CONST_ATTR_SCAN_EL_TYPE(gyro, s, 14, 16);
|
||||
|
||||
static IIO_SCAN_EL_C(accel_x, ADIS16400_SCAN_ACC_X, ADIS16400_XACCL_OUT, NULL);
|
||||
static IIO_SCAN_EL_C(accel_y, ADIS16400_SCAN_ACC_Y, ADIS16400_YACCL_OUT, NULL);
|
||||
static IIO_SCAN_EL_C(accel_z, ADIS16400_SCAN_ACC_Z, ADIS16400_ZACCL_OUT, NULL);
|
||||
static IIO_CONST_ATTR_SCAN_EL_TYPE(accel, s, 14, 16);
|
||||
|
||||
static IIO_SCAN_EL_C(magn_x, ADIS16400_SCAN_MAGN_X, ADIS16400_XMAGN_OUT, NULL);
|
||||
static IIO_SCAN_EL_C(magn_y, ADIS16400_SCAN_MAGN_Y, ADIS16400_YMAGN_OUT, NULL);
|
||||
static IIO_SCAN_EL_C(magn_z, ADIS16400_SCAN_MAGN_Z, ADIS16400_ZMAGN_OUT, NULL);
|
||||
static IIO_CONST_ATTR_SCAN_EL_TYPE(magn, s, 14, 16);
|
||||
|
||||
static IIO_SCAN_EL_C(temp, ADIS16400_SCAN_TEMP, ADIS16400_TEMP_OUT, NULL);
|
||||
static IIO_CONST_ATTR_SCAN_EL_TYPE(temp, s, 12, 16);
|
||||
|
||||
static IIO_SCAN_EL_C(in1, ADIS16400_SCAN_ADC_0, ADIS16400_AUX_ADC, NULL);
|
||||
static IIO_CONST_ATTR_SCAN_EL_TYPE(in1, u, 12, 16);
|
||||
|
||||
static IIO_SCAN_EL_TIMESTAMP(12);
|
||||
static IIO_CONST_ATTR_SCAN_EL_TYPE(timestamp, s, 64, 64);
|
||||
|
||||
static struct attribute *adis16400_scan_el_attrs[] = {
|
||||
&iio_scan_el_in0_supply.dev_attr.attr,
|
||||
&iio_const_attr_in0_supply_index.dev_attr.attr,
|
||||
&iio_const_attr_in0_supply_type.dev_attr.attr,
|
||||
&iio_scan_el_gyro_x.dev_attr.attr,
|
||||
&iio_const_attr_gyro_x_index.dev_attr.attr,
|
||||
&iio_scan_el_gyro_y.dev_attr.attr,
|
||||
&iio_const_attr_gyro_y_index.dev_attr.attr,
|
||||
&iio_scan_el_gyro_z.dev_attr.attr,
|
||||
&iio_const_attr_gyro_z_index.dev_attr.attr,
|
||||
&iio_const_attr_gyro_type.dev_attr.attr,
|
||||
&iio_scan_el_accel_x.dev_attr.attr,
|
||||
&iio_const_attr_accel_x_index.dev_attr.attr,
|
||||
&iio_scan_el_accel_y.dev_attr.attr,
|
||||
&iio_const_attr_accel_y_index.dev_attr.attr,
|
||||
&iio_scan_el_accel_z.dev_attr.attr,
|
||||
&iio_const_attr_accel_z_index.dev_attr.attr,
|
||||
&iio_const_attr_accel_type.dev_attr.attr,
|
||||
&iio_scan_el_magn_x.dev_attr.attr,
|
||||
&iio_const_attr_magn_x_index.dev_attr.attr,
|
||||
&iio_scan_el_magn_y.dev_attr.attr,
|
||||
&iio_const_attr_magn_y_index.dev_attr.attr,
|
||||
&iio_scan_el_magn_z.dev_attr.attr,
|
||||
&iio_const_attr_magn_z_index.dev_attr.attr,
|
||||
&iio_const_attr_magn_type.dev_attr.attr,
|
||||
&iio_scan_el_temp.dev_attr.attr,
|
||||
&iio_const_attr_temp_index.dev_attr.attr,
|
||||
&iio_const_attr_temp_type.dev_attr.attr,
|
||||
&iio_scan_el_in1.dev_attr.attr,
|
||||
&iio_const_attr_in1_index.dev_attr.attr,
|
||||
&iio_const_attr_in1_type.dev_attr.attr,
|
||||
&iio_scan_el_timestamp.dev_attr.attr,
|
||||
&iio_const_attr_timestamp_index.dev_attr.attr,
|
||||
&iio_const_attr_timestamp_type.dev_attr.attr,
|
||||
NULL,
|
||||
};
|
||||
|
||||
static struct attribute_group adis16400_scan_el_group = {
|
||||
.attrs = adis16400_scan_el_attrs,
|
||||
.name = "scan_elements",
|
||||
};
|
||||
|
||||
/**
|
||||
* adis16400_poll_func_th() top half interrupt handler called by trigger
|
||||
* @private_data: iio_dev
|
||||
**/
|
||||
static void adis16400_poll_func_th(struct iio_dev *indio_dev, s64 time)
|
||||
{
|
||||
struct adis16400_state *st = iio_dev_get_devdata(indio_dev);
|
||||
st->last_timestamp = time;
|
||||
schedule_work(&st->work_trigger_to_ring);
|
||||
/* Indicate that this interrupt is being handled */
|
||||
|
||||
/* Technically this is trigger related, but without this
|
||||
* handler running there is currently no way for the interrupt
|
||||
* to clear.
|
||||
*/
|
||||
}
|
||||
|
||||
/**
|
||||
* adis16400_spi_read_burst() - read all data registers
|
||||
* @dev: device associated with child of actual device (iio_dev or iio_trig)
|
||||
@ -153,13 +66,12 @@ static int adis16400_spi_read_burst(struct device *dev, u8 *rx)
|
||||
/* Whilst this makes a lot of calls to iio_sw_ring functions - it is to device
|
||||
* specific to be rolled into the core.
|
||||
*/
|
||||
static void adis16400_trigger_bh_to_ring(struct work_struct *work_s)
|
||||
static irqreturn_t adis16400_trigger_handler(int irq, void *p)
|
||||
{
|
||||
struct adis16400_state *st
|
||||
= container_of(work_s, struct adis16400_state,
|
||||
work_trigger_to_ring);
|
||||
struct iio_ring_buffer *ring = st->indio_dev->ring;
|
||||
|
||||
struct iio_poll_func *pf = p;
|
||||
struct iio_dev *indio_dev = pf->private_data;
|
||||
struct adis16400_state *st = iio_dev_get_devdata(indio_dev);
|
||||
struct iio_ring_buffer *ring = indio_dev->ring;
|
||||
int i = 0, j;
|
||||
s16 *data;
|
||||
size_t datasize = ring->access.get_bytes_per_datum(ring);
|
||||
@ -168,11 +80,11 @@ static void adis16400_trigger_bh_to_ring(struct work_struct *work_s)
|
||||
data = kmalloc(datasize , GFP_KERNEL);
|
||||
if (data == NULL) {
|
||||
dev_err(&st->us->dev, "memory alloc failed in ring bh");
|
||||
return;
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
if (ring->scan_count)
|
||||
if (adis16400_spi_read_burst(&st->indio_dev->dev, st->rx) >= 0)
|
||||
if (adis16400_spi_read_burst(&indio_dev->dev, st->rx) >= 0)
|
||||
for (; i < ring->scan_count; i++) {
|
||||
j = __ffs(mask);
|
||||
mask &= ~(1 << j);
|
||||
@ -182,20 +94,18 @@ static void adis16400_trigger_bh_to_ring(struct work_struct *work_s)
|
||||
|
||||
/* Guaranteed to be aligned with 8 byte boundary */
|
||||
if (ring->scan_timestamp)
|
||||
*((s64 *)(data + ((i + 3)/4)*4)) = st->last_timestamp;
|
||||
*((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
|
||||
ring->access.store_to(indio_dev->ring, (u8 *) data, pf->timestamp);
|
||||
|
||||
ring->access.store_to(ring,
|
||||
(u8 *) data,
|
||||
st->last_timestamp);
|
||||
|
||||
iio_trigger_notify_done(st->indio_dev->trig);
|
||||
iio_trigger_notify_done(indio_dev->trig);
|
||||
kfree(data);
|
||||
|
||||
return;
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
void adis16400_unconfigure_ring(struct iio_dev *indio_dev)
|
||||
{
|
||||
kfree(indio_dev->pollfunc->name);
|
||||
kfree(indio_dev->pollfunc);
|
||||
iio_sw_rb_free(indio_dev->ring);
|
||||
}
|
||||
@ -203,9 +113,7 @@ void adis16400_unconfigure_ring(struct iio_dev *indio_dev)
|
||||
int adis16400_configure_ring(struct iio_dev *indio_dev)
|
||||
{
|
||||
int ret = 0;
|
||||
struct adis16400_state *st = indio_dev->dev_data;
|
||||
struct iio_ring_buffer *ring;
|
||||
INIT_WORK(&st->work_trigger_to_ring, adis16400_trigger_bh_to_ring);
|
||||
|
||||
ring = iio_sw_rb_allocate(indio_dev);
|
||||
if (!ring) {
|
||||
@ -216,7 +124,6 @@ int adis16400_configure_ring(struct iio_dev *indio_dev)
|
||||
/* Effectively select the ring buffer implementation */
|
||||
iio_ring_sw_register_funcs(&ring->access);
|
||||
ring->bpe = 2;
|
||||
ring->scan_el_attrs = &adis16400_scan_el_group;
|
||||
ring->scan_timestamp = true;
|
||||
ring->preenable = &iio_sw_ring_preenable;
|
||||
ring->postenable = &iio_triggered_ring_postenable;
|
||||
@ -224,26 +131,37 @@ int adis16400_configure_ring(struct iio_dev *indio_dev)
|
||||
ring->owner = THIS_MODULE;
|
||||
|
||||
/* Set default scan mode */
|
||||
iio_scan_mask_set(ring, iio_scan_el_in0_supply.number);
|
||||
iio_scan_mask_set(ring, iio_scan_el_gyro_x.number);
|
||||
iio_scan_mask_set(ring, iio_scan_el_gyro_y.number);
|
||||
iio_scan_mask_set(ring, iio_scan_el_gyro_z.number);
|
||||
iio_scan_mask_set(ring, iio_scan_el_accel_x.number);
|
||||
iio_scan_mask_set(ring, iio_scan_el_accel_y.number);
|
||||
iio_scan_mask_set(ring, iio_scan_el_accel_z.number);
|
||||
iio_scan_mask_set(ring, iio_scan_el_magn_x.number);
|
||||
iio_scan_mask_set(ring, iio_scan_el_magn_y.number);
|
||||
iio_scan_mask_set(ring, iio_scan_el_magn_z.number);
|
||||
iio_scan_mask_set(ring, iio_scan_el_temp.number);
|
||||
iio_scan_mask_set(ring, iio_scan_el_in1.number);
|
||||
iio_scan_mask_set(ring, ADIS16400_SCAN_SUPPLY);
|
||||
iio_scan_mask_set(ring, ADIS16400_SCAN_GYRO_X);
|
||||
iio_scan_mask_set(ring, ADIS16400_SCAN_GYRO_Y);
|
||||
iio_scan_mask_set(ring, ADIS16400_SCAN_GYRO_Z);
|
||||
iio_scan_mask_set(ring, ADIS16400_SCAN_ACC_X);
|
||||
iio_scan_mask_set(ring, ADIS16400_SCAN_ACC_Y);
|
||||
iio_scan_mask_set(ring, ADIS16400_SCAN_ACC_Z);
|
||||
iio_scan_mask_set(ring, ADIS16400_SCAN_MAGN_X);
|
||||
iio_scan_mask_set(ring, ADIS16400_SCAN_MAGN_Y);
|
||||
iio_scan_mask_set(ring, ADIS16400_SCAN_MAGN_Z);
|
||||
iio_scan_mask_set(ring, ADIS16400_SCAN_TEMP);
|
||||
iio_scan_mask_set(ring, ADIS16400_SCAN_ADC_0);
|
||||
|
||||
ret = iio_alloc_pollfunc(indio_dev, NULL, &adis16400_poll_func_th);
|
||||
if (ret)
|
||||
indio_dev->pollfunc = kzalloc(sizeof(*indio_dev->pollfunc), GFP_KERNEL);
|
||||
if (indio_dev->pollfunc == NULL) {
|
||||
ret = -ENOMEM;
|
||||
goto error_iio_sw_rb_free;
|
||||
}
|
||||
indio_dev->pollfunc->private_data = indio_dev;
|
||||
indio_dev->pollfunc->h = &iio_pollfunc_store_time;
|
||||
indio_dev->pollfunc->thread = &adis16400_trigger_handler;
|
||||
indio_dev->pollfunc->type = IRQF_ONESHOT;
|
||||
indio_dev->pollfunc->name =
|
||||
kasprintf(GFP_KERNEL, "adis16400_consumer%d", indio_dev->id);
|
||||
if (ret)
|
||||
goto error_iio_free_pollfunc;
|
||||
|
||||
indio_dev->modes |= INDIO_RING_TRIGGERED;
|
||||
return 0;
|
||||
|
||||
error_iio_free_pollfunc:
|
||||
kfree(indio_dev->pollfunc);
|
||||
error_iio_sw_rb_free:
|
||||
iio_sw_rb_free(indio_dev->ring);
|
||||
return ret;
|
||||
|
||||
@ -12,16 +12,6 @@
|
||||
#include "../trigger.h"
|
||||
#include "adis16400.h"
|
||||
|
||||
/**
|
||||
* adis16400_data_rdy_trig_poll() the event handler for the data rdy trig
|
||||
**/
|
||||
static irqreturn_t adis16400_data_rdy_trig_poll(int irq, void *private)
|
||||
{
|
||||
disable_irq_nosync(irq);
|
||||
iio_trigger_poll(private, iio_get_time_ns());
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static IIO_TRIGGER_NAME_ATTR;
|
||||
|
||||
static struct attribute *adis16400_trigger_attrs[] = {
|
||||
@ -43,66 +33,58 @@ static int adis16400_data_rdy_trigger_set_state(struct iio_trigger *trig,
|
||||
struct iio_dev *indio_dev = st->indio_dev;
|
||||
|
||||
dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state);
|
||||
return adis16400_set_irq(&st->indio_dev->dev, state);
|
||||
}
|
||||
|
||||
/**
|
||||
* adis16400_trig_try_reen() try renabling irq for data rdy trigger
|
||||
* @trig: the datardy trigger
|
||||
**/
|
||||
static int adis16400_trig_try_reen(struct iio_trigger *trig)
|
||||
{
|
||||
struct adis16400_state *st = trig->private_data;
|
||||
enable_irq(st->us->irq);
|
||||
/* irq reenabled so success! */
|
||||
return 0;
|
||||
return adis16400_set_irq(st->indio_dev, state);
|
||||
}
|
||||
|
||||
int adis16400_probe_trigger(struct iio_dev *indio_dev)
|
||||
{
|
||||
int ret;
|
||||
struct adis16400_state *st = indio_dev->dev_data;
|
||||
char *name;
|
||||
|
||||
st->trig = iio_allocate_trigger();
|
||||
if (st->trig == NULL) {
|
||||
name = kasprintf(GFP_KERNEL,
|
||||
"%s-dev%d",
|
||||
spi_get_device_id(st->us)->name,
|
||||
indio_dev->id);
|
||||
if (name == NULL) {
|
||||
ret = -ENOMEM;
|
||||
goto error_ret;
|
||||
}
|
||||
|
||||
st->trig = iio_allocate_trigger_named(name);
|
||||
if (st->trig == NULL) {
|
||||
ret = -ENOMEM;
|
||||
goto error_free_name;
|
||||
}
|
||||
|
||||
ret = request_irq(st->us->irq,
|
||||
adis16400_data_rdy_trig_poll,
|
||||
&iio_trigger_generic_data_rdy_poll,
|
||||
IRQF_TRIGGER_RISING,
|
||||
"adis16400",
|
||||
st->trig);
|
||||
if (ret)
|
||||
goto error_free_trig;
|
||||
st->trig->name = kasprintf(GFP_KERNEL,
|
||||
"adis16400-dev%d",
|
||||
indio_dev->id);
|
||||
if (!st->trig->name) {
|
||||
ret = -ENOMEM;
|
||||
goto error_free_irq;
|
||||
}
|
||||
|
||||
st->trig->dev.parent = &st->us->dev;
|
||||
st->trig->owner = THIS_MODULE;
|
||||
st->trig->private_data = st;
|
||||
st->trig->set_trigger_state = &adis16400_data_rdy_trigger_set_state;
|
||||
st->trig->try_reenable = &adis16400_trig_try_reen;
|
||||
st->trig->control_attrs = &adis16400_trigger_attr_group;
|
||||
ret = iio_trigger_register(st->trig);
|
||||
|
||||
/* select default trigger */
|
||||
indio_dev->trig = st->trig;
|
||||
if (ret)
|
||||
goto error_free_trig_name;
|
||||
goto error_free_irq;
|
||||
|
||||
return 0;
|
||||
|
||||
error_free_trig_name:
|
||||
kfree(st->trig->name);
|
||||
error_free_irq:
|
||||
free_irq(st->us->irq, st->trig);
|
||||
error_free_trig:
|
||||
iio_free_trigger(st->trig);
|
||||
error_free_name:
|
||||
kfree(name);
|
||||
error_ret:
|
||||
return ret;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user