Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / staging / iio / iio_simple_dummy.h

diff --git a/kernel/drivers/staging/iio/iio_simple_dummy.h b/kernel/drivers/staging/iio/iio_simple_dummy.h
new file mode 100644 (file)
index 0000000..34989bf
--- /dev/null
+++ b/kernel/drivers/staging/iio/iio_simple_dummy.h
@@ -0,0 +1,129 @@
+/**
+ * Copyright (c) 2011 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * Join together the various functionality of iio_simple_dummy driver
+ */
+
+#ifndef _IIO_SIMPLE_DUMMY_H_
+#define _IIO_SIMPLE_DUMMY_H_
+#include <linux/kernel.h>
+
+struct iio_dummy_accel_calibscale;
+struct iio_dummy_regs;
+
+/**
+ * struct iio_dummy_state - device instance specific state.
+ * @dac_val:                   cache for dac value
+ * @single_ended_adc_val:      cache for single ended adc value
+ * @differential_adc_val:      cache for differential adc value
+ * @accel_val:                 cache for acceleration value
+ * @accel_calibbias:           cache for acceleration calibbias
+ * @accel_calibscale:          cache for acceleration calibscale
+ * @lock:                      lock to ensure state is consistent
+ * @event_irq:                 irq number for event line (faked)
+ * @event_val:                 cache for event theshold value
+ * @event_en:                  cache of whether event is enabled
+ */
+struct iio_dummy_state {
+       int dac_val;
+       int single_ended_adc_val;
+       int differential_adc_val[2];
+       int accel_val;
+       int accel_calibbias;
+       int activity_running;
+       int activity_walking;
+       const struct iio_dummy_accel_calibscale *accel_calibscale;
+       struct mutex lock;
+       struct iio_dummy_regs *regs;
+       int steps_enabled;
+       int steps;
+       int height;
+#ifdef CONFIG_IIO_SIMPLE_DUMMY_EVENTS
+       int event_irq;
+       int event_val;
+       bool event_en;
+#endif /* CONFIG_IIO_SIMPLE_DUMMY_EVENTS */
+};
+
+#ifdef CONFIG_IIO_SIMPLE_DUMMY_EVENTS
+
+struct iio_dev;
+
+int iio_simple_dummy_read_event_config(struct iio_dev *indio_dev,
+                                      const struct iio_chan_spec *chan,
+                                      enum iio_event_type type,
+                                      enum iio_event_direction dir);
+
+int iio_simple_dummy_write_event_config(struct iio_dev *indio_dev,
+                                       const struct iio_chan_spec *chan,
+                                       enum iio_event_type type,
+                                       enum iio_event_direction dir,
+                                       int state);
+
+int iio_simple_dummy_read_event_value(struct iio_dev *indio_dev,
+                                     const struct iio_chan_spec *chan,
+                                     enum iio_event_type type,
+                                     enum iio_event_direction dir,
+                                     enum iio_event_info info, int *val,
+                                     int *val2);
+
+int iio_simple_dummy_write_event_value(struct iio_dev *indio_dev,
+                                      const struct iio_chan_spec *chan,
+                                      enum iio_event_type type,
+                                      enum iio_event_direction dir,
+                                      enum iio_event_info info, int val,
+                                      int val2);
+
+int iio_simple_dummy_events_register(struct iio_dev *indio_dev);
+int iio_simple_dummy_events_unregister(struct iio_dev *indio_dev);
+
+#else /* Stubs for when events are disabled at compile time */
+
+static inline int
+iio_simple_dummy_events_register(struct iio_dev *indio_dev)
+{
+       return 0;
+};
+
+static inline int
+iio_simple_dummy_events_unregister(struct iio_dev *indio_dev)
+{
+       return 0;
+};
+
+#endif /* CONFIG_IIO_SIMPLE_DUMMY_EVENTS*/
+
+/**
+ * enum iio_simple_dummy_scan_elements - scan index enum
+ * @voltage0:          the single ended voltage channel
+ * @diffvoltage1m2:    first differential channel
+ * @diffvoltage3m4:    second differenial channel
+ * @accelx:            acceleration channel
+ *
+ * Enum provides convenient numbering for the scan index.
+ */
+enum iio_simple_dummy_scan_elements {
+       voltage0,
+       diffvoltage1m2,
+       diffvoltage3m4,
+       accelx,
+};
+
+#ifdef CONFIG_IIO_SIMPLE_DUMMY_BUFFER
+int iio_simple_dummy_configure_buffer(struct iio_dev *indio_dev);
+void iio_simple_dummy_unconfigure_buffer(struct iio_dev *indio_dev);
+#else
+static inline int iio_simple_dummy_configure_buffer(struct iio_dev *indio_dev)
+{
+       return 0;
+};
+static inline
+void iio_simple_dummy_unconfigure_buffer(struct iio_dev *indio_dev)
+{};
+
+#endif /* CONFIG_IIO_SIMPLE_DUMMY_BUFFER */
+#endif /* _IIO_SIMPLE_DUMMY_H_ */