Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / drivers / staging / iio / gyro / adis16060.h

diff --git a/drivers/staging/iio/gyro/adis16060.h b/drivers/staging/iio/gyro/adis16060.h
new file mode 100644 (file)
index 0000000..5c00e53
--- /dev/null
+++ b/drivers/staging/iio/gyro/adis16060.h
@@ -0,0 +1,101 @@
+#ifndef SPI_ADIS16060_H_
+#define SPI_ADIS16060_H_
+
+#define ADIS16060_GYRO       0x20 /* Measure Angular Rate (Gyro) */
+#define ADIS16060_SUPPLY_OUT 0x10 /* Measure Temperature */
+#define ADIS16060_AIN2       0x80 /* Measure AIN2 */
+#define ADIS16060_AIN1       0x40 /* Measure AIN1 */
+#define ADIS16060_TEMP_OUT   0x22 /* Set Positive Self-Test and Output for Angular Rate */
+#define ADIS16060_ANGL_OUT   0x21 /* Set Negative Self-Test and Output for Angular Rate */
+
+#define ADIS16060_MAX_TX     3
+#define ADIS16060_MAX_RX     3
+
+/**
+ * struct adis16060_state - device instance specific data
+ * @us_w:                      actual spi_device to write data
+ * @work_trigger_to_ring: bh for triggered event handling
+ * @inter:             used to check if new interrupt has been triggered
+ * @last_timestamp:    passing timestamp from th to bh of interrupt handler
+ * @indio_dev:         industrial I/O device structure
+ * @trig:              data ready trigger registered with iio
+ * @tx:                        transmit buffer
+ * @rx:                        recieve buffer
+ * @buf_lock:          mutex to protect tx and rx
+ **/
+struct adis16060_state {
+       struct spi_device               *us_w;
+       struct spi_device               *us_r;
+       struct work_struct              work_trigger_to_ring;
+       s64                             last_timestamp;
+       struct iio_dev                  *indio_dev;
+       struct iio_trigger              *trig;
+       u8                              *tx;
+       u8                              *rx;
+       struct mutex                    buf_lock;
+};
+
+#if defined(CONFIG_IIO_RING_BUFFER) && defined(THIS_HAS_RING_BUFFER_SUPPORT)
+/* At the moment triggers are only used for ring buffer
+ * filling. This may change!
+ */
+
+enum adis16060_scan {
+       ADIS16060_SCAN_GYRO,
+       ADIS16060_SCAN_TEMP,
+       ADIS16060_SCAN_ADC_1,
+       ADIS16060_SCAN_ADC_2,
+};
+
+void adis16060_remove_trigger(struct iio_dev *indio_dev);
+int adis16060_probe_trigger(struct iio_dev *indio_dev);
+
+ssize_t adis16060_read_data_from_ring(struct device *dev,
+                                     struct device_attribute *attr,
+                                     char *buf);
+
+
+int adis16060_configure_ring(struct iio_dev *indio_dev);
+void adis16060_unconfigure_ring(struct iio_dev *indio_dev);
+
+int adis16060_initialize_ring(struct iio_ring_buffer *ring);
+void adis16060_uninitialize_ring(struct iio_ring_buffer *ring);
+#else /* CONFIG_IIO_RING_BUFFER */
+
+static inline void adis16060_remove_trigger(struct iio_dev *indio_dev)
+{
+}
+
+static inline int adis16060_probe_trigger(struct iio_dev *indio_dev)
+{
+       return 0;
+}
+
+static inline ssize_t
+adis16060_read_data_from_ring(struct device *dev,
+                             struct device_attribute *attr,
+                             char *buf)
+{
+       return 0;
+}
+
+static int adis16060_configure_ring(struct iio_dev *indio_dev)
+{
+       return 0;
+}
+
+static inline void adis16060_unconfigure_ring(struct iio_dev *indio_dev)
+{
+}
+
+static inline int adis16060_initialize_ring(struct iio_ring_buffer *ring)
+{
+       return 0;
+}
+
+static inline void adis16060_uninitialize_ring(struct iio_ring_buffer *ring)
+{
+}
+
+#endif /* CONFIG_IIO_RING_BUFFER */
+#endif /* SPI_ADIS16060_H_ */