LXR linux/drivers/staging/iio/meter/ade7759.h

   1#ifndef _ADE7759_H
   2#define _ADE7759_H
   3
   4#define ADE7759_WAVEFORM  0x01
   5#define ADE7759_AENERGY   0x02
   6#define ADE7759_RSTENERGY 0x03
   7#define ADE7759_STATUS    0x04
   8#define ADE7759_RSTSTATUS 0x05
   9#define ADE7759_MODE      0x06
  10#define ADE7759_CFDEN     0x07
  11#define ADE7759_CH1OS     0x08
  12#define ADE7759_CH2OS     0x09
  13#define ADE7759_GAIN      0x0A
  14#define ADE7759_APGAIN    0x0B
  15#define ADE7759_PHCAL     0x0C
  16#define ADE7759_APOS      0x0D
  17#define ADE7759_ZXTOUT    0x0E
  18#define ADE7759_SAGCYC    0x0F
  19#define ADE7759_IRQEN     0x10
  20#define ADE7759_SAGLVL    0x11
  21#define ADE7759_TEMP      0x12
  22#define ADE7759_LINECYC   0x13
  23#define ADE7759_LENERGY   0x14
  24#define ADE7759_CFNUM     0x15
  25#define ADE7759_CHKSUM    0x1E
  26#define ADE7759_DIEREV    0x1F
  27
  28#define ADE7759_READ_REG(a)    a
  29#define ADE7759_WRITE_REG(a) ((a) | 0x80)
  30
  31#define ADE7759_MAX_TX    6
  32#define ADE7759_MAX_RX    6
  33#define ADE7759_STARTUP_DELAY 1
  34
  35#define ADE7759_SPI_SLOW        (u32)(300 * 1000)
  36#define ADE7759_SPI_BURST       (u32)(1000 * 1000)
  37#define ADE7759_SPI_FAST        (u32)(2000 * 1000)
  38
  39#define DRIVER_NAME             "ade7759"
  40
  41/**
  42 * struct ade7759_state - device instance specific data
  43 * @us:                 actual spi_device
  44 * @work_trigger_to_ring: bh for triggered event handling
  45 * @inter:              used to check if new interrupt has been triggered
  46 * @last_timestamp:     passing timestamp from th to bh of interrupt handler
  47 * @indio_dev:          industrial I/O device structure
  48 * @trig:               data ready trigger registered with iio
  49 * @tx:                 transmit buffer
  50 * @rx:                 recieve buffer
  51 * @buf_lock:           mutex to protect tx and rx
  52 **/
  53struct ade7759_state {
  54        struct spi_device               *us;
  55        struct work_struct              work_trigger_to_ring;
  56        s64                             last_timestamp;
  57        struct iio_dev                  *indio_dev;
  58        struct iio_trigger              *trig;
  59        u8                              *tx;
  60        u8                              *rx;
  61        struct mutex                    buf_lock;
  62};
  63#if defined(CONFIG_IIO_RING_BUFFER) && defined(THIS_HAS_RING_BUFFER_SUPPORT)
  64/* At the moment triggers are only used for ring buffer
  65 * filling. This may change!
  66 */
  67
  68enum ade7759_scan {
  69        ADE7759_SCAN_ACTIVE_POWER,
  70        ADE7759_SCAN_CH1_CH2,
  71        ADE7759_SCAN_CH1,
  72        ADE7759_SCAN_CH2,
  73};
  74
  75void ade7759_remove_trigger(struct iio_dev *indio_dev);
  76int ade7759_probe_trigger(struct iio_dev *indio_dev);
  77
  78ssize_t ade7759_read_data_from_ring(struct device *dev,
  79                struct device_attribute *attr,
  80                char *buf);
  81
  82
  83int ade7759_configure_ring(struct iio_dev *indio_dev);
  84void ade7759_unconfigure_ring(struct iio_dev *indio_dev);
  85
  86int ade7759_initialize_ring(struct iio_ring_buffer *ring);
  87void ade7759_uninitialize_ring(struct iio_ring_buffer *ring);
  88#else /* CONFIG_IIO_RING_BUFFER */
  89
  90static inline void ade7759_remove_trigger(struct iio_dev *indio_dev)
  91{
  92}
  93static inline int ade7759_probe_trigger(struct iio_dev *indio_dev)
  94{
  95        return 0;
  96}
  97
  98static inline ssize_t
  99ade7759_read_data_from_ring(struct device *dev,
 100                struct device_attribute *attr,
 101                char *buf)
 102{
 103        return 0;
 104}
 105
 106static int ade7759_configure_ring(struct iio_dev *indio_dev)
 107{
 108        return 0;
 109}
 110static inline void ade7759_unconfigure_ring(struct iio_dev *indio_dev)
 111{
 112}
 113static inline int ade7759_initialize_ring(struct iio_ring_buffer *ring)
 114{
 115        return 0;
 116}
 117static inline void ade7759_uninitialize_ring(struct iio_ring_buffer *ring)
 118{
 119}
 120#endif /* CONFIG_IIO_RING_BUFFER */
 121
 122#endif
 123