drivers/staging/iio/meter/ade7758.h

   1 /*
   2  * ADE7758 Poly Phase Multifunction Energy Metering IC driver
   3  *
   4  * Copyright 2010-2011 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2.
   7  */
   8
   9 #ifndef _ADE7758_H
  10 #define _ADE7758_H
  11
  12 #define ADE7758_AWATTHR   0x01
  13 #define ADE7758_BWATTHR   0x02
  14 #define ADE7758_CWATTHR   0x03
  15 #define ADE7758_AVARHR    0x04
  16 #define ADE7758_BVARHR    0x05
  17 #define ADE7758_CVARHR    0x06
  18 #define ADE7758_AVAHR     0x07
  19 #define ADE7758_BVAHR     0x08
  20 #define ADE7758_CVAHR     0x09
  21 #define ADE7758_AIRMS     0x0A
  22 #define ADE7758_BIRMS     0x0B
  23 #define ADE7758_CIRMS     0x0C
  24 #define ADE7758_AVRMS     0x0D
  25 #define ADE7758_BVRMS     0x0E
  26 #define ADE7758_CVRMS     0x0F
  27 #define ADE7758_FREQ      0x10
  28 #define ADE7758_TEMP      0x11
  29 #define ADE7758_WFORM     0x12
  30 #define ADE7758_OPMODE    0x13
  31 #define ADE7758_MMODE     0x14
  32 #define ADE7758_WAVMODE   0x15
  33 #define ADE7758_COMPMODE  0x16
  34 #define ADE7758_LCYCMODE  0x17
  35 #define ADE7758_MASK      0x18
  36 #define ADE7758_STATUS    0x19
  37 #define ADE7758_RSTATUS   0x1A
  38 #define ADE7758_ZXTOUT    0x1B
  39 #define ADE7758_LINECYC   0x1C
  40 #define ADE7758_SAGCYC    0x1D
  41 #define ADE7758_SAGLVL    0x1E
  42 #define ADE7758_VPINTLVL  0x1F
  43 #define ADE7758_IPINTLVL  0x20
  44 #define ADE7758_VPEAK     0x21
  45 #define ADE7758_IPEAK     0x22
  46 #define ADE7758_GAIN      0x23
  47 #define ADE7758_AVRMSGAIN 0x24
  48 #define ADE7758_BVRMSGAIN 0x25
  49 #define ADE7758_CVRMSGAIN 0x26
  50 #define ADE7758_AIGAIN    0x27
  51 #define ADE7758_BIGAIN    0x28
  52 #define ADE7758_CIGAIN    0x29
  53 #define ADE7758_AWG       0x2A
  54 #define ADE7758_BWG       0x2B
  55 #define ADE7758_CWG       0x2C
  56 #define ADE7758_AVARG     0x2D
  57 #define ADE7758_BVARG     0x2E
  58 #define ADE7758_CVARG     0x2F
  59 #define ADE7758_AVAG      0x30
  60 #define ADE7758_BVAG      0x31
  61 #define ADE7758_CVAG      0x32
  62 #define ADE7758_AVRMSOS   0x33
  63 #define ADE7758_BVRMSOS   0x34
  64 #define ADE7758_CVRMSOS   0x35
  65 #define ADE7758_AIRMSOS   0x36
  66 #define ADE7758_BIRMSOS   0x37
  67 #define ADE7758_CIRMSOS   0x38
  68 #define ADE7758_AWAITOS   0x39
  69 #define ADE7758_BWAITOS   0x3A
  70 #define ADE7758_CWAITOS   0x3B
  71 #define ADE7758_AVAROS    0x3C
  72 #define ADE7758_BVAROS    0x3D
  73 #define ADE7758_CVAROS    0x3E
  74 #define ADE7758_APHCAL    0x3F
  75 #define ADE7758_BPHCAL    0x40
  76 #define ADE7758_CPHCAL    0x41
  77 #define ADE7758_WDIV      0x42
  78 #define ADE7758_VADIV     0x44
  79 #define ADE7758_VARDIV    0x43
  80 #define ADE7758_APCFNUM   0x45
  81 #define ADE7758_APCFDEN   0x46
  82 #define ADE7758_VARCFNUM  0x47
  83 #define ADE7758_VARCFDEN  0x48
  84 #define ADE7758_CHKSUM    0x7E
  85 #define ADE7758_VERSION   0x7F
  86
  87 #define ADE7758_READ_REG(a)    a
  88 #define ADE7758_WRITE_REG(a) ((a) | 0x80)
  89
  90 #define ADE7758_MAX_TX    8
  91 #define ADE7758_MAX_RX    4
  92 #define ADE7758_STARTUP_DELAY 1
  93
  94 #define AD7758_NUM_WAVSEL       5
  95 #define AD7758_NUM_PHSEL        3
  96 #define AD7758_NUM_WAVESRC      (AD7758_NUM_WAVSEL * AD7758_NUM_PHSEL)
  97
  98 #define AD7758_PHASE_A          0
  99 #define AD7758_PHASE_B          1
 100 #define AD7758_PHASE_C          2
 101 #define AD7758_CURRENT          0
 102 #define AD7758_VOLTAGE          1
 103 #define AD7758_ACT_PWR          2
 104 #define AD7758_REACT_PWR        3
 105 #define AD7758_APP_PWR          4
 106 #define AD7758_WT(p, w)         (((w) << 2) | (p))
 107
 108 #define DRIVER_NAME             "ade7758"
 109
 110
 111 /**
 112  * struct ade7758_state - device instance specific data
 113  * @us:                 actual spi_device
 114  * @trig:               data ready trigger registered with iio
 115  * @tx:                 transmit buffer
 116  * @rx:                 receive buffer
 117  * @buf_lock:           mutex to protect tx and rx
 118  **/
 119 struct ade7758_state {
 120         struct spi_device       *us;
 121         struct iio_trigger      *trig;
 122         u8                      *tx;
 123         u8                      *rx;
 124         struct mutex            buf_lock;
 125         unsigned long           available_scan_masks[AD7758_NUM_WAVESRC];
 126         struct iio_chan_spec    *ade7758_ring_channels;
 127         struct spi_transfer     ring_xfer[4];
 128         struct spi_message      ring_msg;
 129         /*
 130          * DMA (thus cache coherency maintenance) requires the
 131          * transfer buffers to live in their own cache lines.
 132          */
 133         unsigned char           rx_buf[8] ____cacheline_aligned;
 134         unsigned char           tx_buf[8];
 135
 136 };
 137 #ifdef CONFIG_IIO_BUFFER
 138 /* At the moment triggers are only used for ring buffer
 139  * filling. This may change!
 140  */
 141
 142 void ade7758_remove_trigger(struct iio_dev *indio_dev);
 143 int ade7758_probe_trigger(struct iio_dev *indio_dev);
 144
 145 ssize_t ade7758_read_data_from_ring(struct device *dev,
 146                 struct device_attribute *attr,
 147                 char *buf);
 148
 149
 150 int ade7758_configure_ring(struct iio_dev *indio_dev);
 151 void ade7758_unconfigure_ring(struct iio_dev *indio_dev);
 152
 153 void ade7758_uninitialize_ring(struct iio_dev *indio_dev);
 154 int ade7758_set_irq(struct device *dev, bool enable);
 155
 156 int ade7758_spi_write_reg_8(struct device *dev,
 157                 u8 reg_address, u8 val);
 158 int ade7758_spi_read_reg_8(struct device *dev,
 159                 u8 reg_address, u8 *val);
 160
 161 #else /* CONFIG_IIO_BUFFER */
 162
 163 static inline void ade7758_remove_trigger(struct iio_dev *indio_dev)
 164 {
 165 }
 166 static inline int ade7758_probe_trigger(struct iio_dev *indio_dev)
 167 {
 168         return 0;
 169 }
 170
 171 static int ade7758_configure_ring(struct iio_dev *indio_dev)
 172 {
 173         return 0;
 174 }
 175 static inline void ade7758_unconfigure_ring(struct iio_dev *indio_dev)
 176 {
 177 }
 178 static inline int ade7758_initialize_ring(struct iio_ring_buffer *ring)
 179 {
 180         return 0;
 181 }
 182 static inline void ade7758_uninitialize_ring(struct iio_dev *indio_dev)
 183 {
 184 }
 185 #endif /* CONFIG_IIO_BUFFER */
 186
 187 #endif