include/linux/iio/imu/adis.h

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This source file includes following definitions.
adis_write_reg_8
adis_write_reg_16
adis_write_reg_32
adis_read_reg_16
adis_read_reg_32
adis_setup_buffer_and_trigger
adis_cleanup_buffer_and_trigger
adis_probe_trigger
adis_remove_trigger
   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Common library for ADIS16XXX devices
   4  *
   5  * Copyright 2012 Analog Devices Inc.
   6  *   Author: Lars-Peter Clausen <lars@metafoo.de>
   7  */
   8 
   9 #ifndef __IIO_ADIS_H__
  10 #define __IIO_ADIS_H__
  11 
  12 #include <linux/spi/spi.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/iio/types.h>
  15 
  16 #define ADIS_WRITE_REG(reg) ((0x80 | (reg)))
  17 #define ADIS_READ_REG(reg) ((reg) & 0x7f)
  18 
  19 #define ADIS_PAGE_SIZE 0x80
  20 #define ADIS_REG_PAGE_ID 0x00
  21 
  22 struct adis;
  23 struct adis_burst;
  24 
  25 /**
  26  * struct adis_data - ADIS chip variant specific data
  27  * @read_delay: SPI delay for read operations in us
  28  * @write_delay: SPI delay for write operations in us
  29  * @cs_change_delay: SPI delay between CS changes in us
  30  * @glob_cmd_reg: Register address of the GLOB_CMD register
  31  * @msc_ctrl_reg: Register address of the MSC_CTRL register
  32  * @diag_stat_reg: Register address of the DIAG_STAT register
  33  * @status_error_msgs: Array of error messgaes
  34  * @status_error_mask:
  35  */
  36 struct adis_data {
  37         unsigned int read_delay;
  38         unsigned int write_delay;
  39         unsigned int cs_change_delay;
  40 
  41         unsigned int glob_cmd_reg;
  42         unsigned int msc_ctrl_reg;
  43         unsigned int diag_stat_reg;
  44 
  45         unsigned int self_test_mask;
  46         bool self_test_no_autoclear;
  47         unsigned int startup_delay;
  48 
  49         const char * const *status_error_msgs;
  50         unsigned int status_error_mask;
  51 
  52         int (*enable_irq)(struct adis *adis, bool enable);
  53 
  54         bool has_paging;
  55 };
  56 
  57 struct adis {
  58         struct spi_device       *spi;
  59         struct iio_trigger      *trig;
  60 
  61         const struct adis_data  *data;
  62         struct adis_burst       *burst;
  63 
  64         struct mutex            txrx_lock;
  65         struct spi_message      msg;
  66         struct spi_transfer     *xfer;
  67         unsigned int            current_page;
  68         void                    *buffer;
  69 
  70         uint8_t                 tx[10] ____cacheline_aligned;
  71         uint8_t                 rx[4];
  72 };
  73 
  74 int adis_init(struct adis *adis, struct iio_dev *indio_dev,
  75         struct spi_device *spi, const struct adis_data *data);
  76 int adis_reset(struct adis *adis);
  77 
  78 int adis_write_reg(struct adis *adis, unsigned int reg,
  79         unsigned int val, unsigned int size);
  80 int adis_read_reg(struct adis *adis, unsigned int reg,
  81         unsigned int *val, unsigned int size);
  82 
  83 /**
  84  * adis_write_reg_8() - Write single byte to a register
  85  * @adis: The adis device
  86  * @reg: The address of the register to be written
  87  * @value: The value to write
  88  */
  89 static inline int adis_write_reg_8(struct adis *adis, unsigned int reg,
  90         uint8_t val)
  91 {
  92         return adis_write_reg(adis, reg, val, 1);
  93 }
  94 
  95 /**
  96  * adis_write_reg_16() - Write 2 bytes to a pair of registers
  97  * @adis: The adis device
  98  * @reg: The address of the lower of the two registers
  99  * @value: Value to be written
 100  */
 101 static inline int adis_write_reg_16(struct adis *adis, unsigned int reg,
 102         uint16_t val)
 103 {
 104         return adis_write_reg(adis, reg, val, 2);
 105 }
 106 
 107 /**
 108  * adis_write_reg_32() - write 4 bytes to four registers
 109  * @adis: The adis device
 110  * @reg: The address of the lower of the four register
 111  * @value: Value to be written
 112  */
 113 static inline int adis_write_reg_32(struct adis *adis, unsigned int reg,
 114         uint32_t val)
 115 {
 116         return adis_write_reg(adis, reg, val, 4);
 117 }
 118 
 119 /**
 120  * adis_read_reg_16() - read 2 bytes from a 16-bit register
 121  * @adis: The adis device
 122  * @reg: The address of the lower of the two registers
 123  * @val: The value read back from the device
 124  */
 125 static inline int adis_read_reg_16(struct adis *adis, unsigned int reg,
 126         uint16_t *val)
 127 {
 128         unsigned int tmp;
 129         int ret;
 130 
 131         ret = adis_read_reg(adis, reg, &tmp, 2);
 132         *val = tmp;
 133 
 134         return ret;
 135 }
 136 
 137 /**
 138  * adis_read_reg_32() - read 4 bytes from a 32-bit register
 139  * @adis: The adis device
 140  * @reg: The address of the lower of the two registers
 141  * @val: The value read back from the device
 142  */
 143 static inline int adis_read_reg_32(struct adis *adis, unsigned int reg,
 144         uint32_t *val)
 145 {
 146         unsigned int tmp;
 147         int ret;
 148 
 149         ret = adis_read_reg(adis, reg, &tmp, 4);
 150         *val = tmp;
 151 
 152         return ret;
 153 }
 154 
 155 int adis_enable_irq(struct adis *adis, bool enable);
 156 int adis_check_status(struct adis *adis);
 157 
 158 int adis_initial_startup(struct adis *adis);
 159 
 160 int adis_single_conversion(struct iio_dev *indio_dev,
 161         const struct iio_chan_spec *chan, unsigned int error_mask,
 162         int *val);
 163 
 164 #define ADIS_VOLTAGE_CHAN(addr, si, chan, name, info_all, bits) { \
 165         .type = IIO_VOLTAGE, \
 166         .indexed = 1, \
 167         .channel = (chan), \
 168         .extend_name = name, \
 169         .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
 170                 BIT(IIO_CHAN_INFO_SCALE), \
 171         .info_mask_shared_by_all = info_all, \
 172         .address = (addr), \
 173         .scan_index = (si), \
 174         .scan_type = { \
 175                 .sign = 'u', \
 176                 .realbits = (bits), \
 177                 .storagebits = 16, \
 178                 .endianness = IIO_BE, \
 179         }, \
 180 }
 181 
 182 #define ADIS_SUPPLY_CHAN(addr, si, info_all, bits) \
 183         ADIS_VOLTAGE_CHAN(addr, si, 0, "supply", info_all, bits)
 184 
 185 #define ADIS_AUX_ADC_CHAN(addr, si, info_all, bits) \
 186         ADIS_VOLTAGE_CHAN(addr, si, 1, NULL, info_all, bits)
 187 
 188 #define ADIS_TEMP_CHAN(addr, si, info_all, bits) { \
 189         .type = IIO_TEMP, \
 190         .indexed = 1, \
 191         .channel = 0, \
 192         .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
 193                 BIT(IIO_CHAN_INFO_SCALE) | \
 194                 BIT(IIO_CHAN_INFO_OFFSET), \
 195         .info_mask_shared_by_all = info_all, \
 196         .address = (addr), \
 197         .scan_index = (si), \
 198         .scan_type = { \
 199                 .sign = 'u', \
 200                 .realbits = (bits), \
 201                 .storagebits = 16, \
 202                 .endianness = IIO_BE, \
 203         }, \
 204 }
 205 
 206 #define ADIS_MOD_CHAN(_type, mod, addr, si, info_sep, info_all, bits) { \
 207         .type = (_type), \
 208         .modified = 1, \
 209         .channel2 = IIO_MOD_ ## mod, \
 210         .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
 211                  info_sep, \
 212         .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
 213         .info_mask_shared_by_all = info_all, \
 214         .address = (addr), \
 215         .scan_index = (si), \
 216         .scan_type = { \
 217                 .sign = 's', \
 218                 .realbits = (bits), \
 219                 .storagebits = 16, \
 220                 .endianness = IIO_BE, \
 221         }, \
 222 }
 223 
 224 #define ADIS_ACCEL_CHAN(mod, addr, si, info_sep, info_all, bits) \
 225         ADIS_MOD_CHAN(IIO_ACCEL, mod, addr, si, info_sep, info_all, bits)
 226 
 227 #define ADIS_GYRO_CHAN(mod, addr, si, info_sep, info_all, bits)         \
 228         ADIS_MOD_CHAN(IIO_ANGL_VEL, mod, addr, si, info_sep, info_all, bits)
 229 
 230 #define ADIS_INCLI_CHAN(mod, addr, si, info_sep, info_all, bits) \
 231         ADIS_MOD_CHAN(IIO_INCLI, mod, addr, si, info_sep, info_all, bits)
 232 
 233 #define ADIS_ROT_CHAN(mod, addr, si, info_sep, info_all, bits) \
 234         ADIS_MOD_CHAN(IIO_ROT, mod, addr, si, info_sep, info_all, bits)
 235 
 236 #ifdef CONFIG_IIO_ADIS_LIB_BUFFER
 237 
 238 /**
 239  * struct adis_burst - ADIS data for burst transfers
 240  * @en                  burst mode enabled
 241  * @reg_cmd             register command that triggers burst
 242  * @extra_len           extra length to account in the SPI RX buffer
 243  */
 244 struct adis_burst {
 245         bool            en;
 246         unsigned int    reg_cmd;
 247         unsigned int    extra_len;
 248 };
 249 
 250 int adis_setup_buffer_and_trigger(struct adis *adis,
 251         struct iio_dev *indio_dev, irqreturn_t (*trigger_handler)(int, void *));
 252 void adis_cleanup_buffer_and_trigger(struct adis *adis,
 253         struct iio_dev *indio_dev);
 254 
 255 int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev);
 256 void adis_remove_trigger(struct adis *adis);
 257 
 258 int adis_update_scan_mode(struct iio_dev *indio_dev,
 259         const unsigned long *scan_mask);
 260 
 261 #else /* CONFIG_IIO_BUFFER */
 262 
 263 static inline int adis_setup_buffer_and_trigger(struct adis *adis,
 264         struct iio_dev *indio_dev, irqreturn_t (*trigger_handler)(int, void *))
 265 {
 266         return 0;
 267 }
 268 
 269 static inline void adis_cleanup_buffer_and_trigger(struct adis *adis,
 270         struct iio_dev *indio_dev)
 271 {
 272 }
 273 
 274 static inline int adis_probe_trigger(struct adis *adis,
 275         struct iio_dev *indio_dev)
 276 {
 277         return 0;
 278 }
 279 
 280 static inline void adis_remove_trigger(struct adis *adis)
 281 {
 282 }
 283 
 284 #define adis_update_scan_mode NULL
 285 
 286 #endif /* CONFIG_IIO_BUFFER */
 287 
 288 #ifdef CONFIG_DEBUG_FS
 289 
 290 int adis_debugfs_reg_access(struct iio_dev *indio_dev,
 291         unsigned int reg, unsigned int writeval, unsigned int *readval);
 292 
 293 #else
 294 
 295 #define adis_debugfs_reg_access NULL
 296 
 297 #endif
 298 
 299 #endif
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root/include/linux/iio/imu/adis.h

INCLUDED FROM

DEFINITIONS
