drivers/hwmon/ltc2947-spi.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Analog Devices LTC2947 high precision power and energy monitor over SPI
   4  *
   5  * Copyright 2019 Analog Devices Inc.
   6  */
   7 #include <linux/module.h>
   8 #include <linux/of.h>
   9 #include <linux/regmap.h>
  10 #include <linux/spi/spi.h>
  11
  12 #include "ltc2947.h"
  13
  14 static const struct regmap_config ltc2947_regmap_config = {
  15         .reg_bits = 16,
  16         .val_bits = 8,
  17         .read_flag_mask = BIT(0),
  18 };
  19
  20 static int ltc2947_probe(struct spi_device *spi)
  21 {
  22         struct regmap *map;
  23
  24         map = devm_regmap_init_spi(spi, &ltc2947_regmap_config);
  25         if (IS_ERR(map))
  26                 return PTR_ERR(map);
  27
  28         return ltc2947_core_probe(map, spi_get_device_id(spi)->name);
  29 }
  30
  31 static const struct spi_device_id ltc2947_id[] = {
  32         {"ltc2947", 0},
  33         {}
  34 };
  35 MODULE_DEVICE_TABLE(spi, ltc2947_id);
  36
  37 static struct spi_driver ltc2947_driver = {
  38         .driver = {
  39                 .name = "ltc2947",
  40                 .of_match_table = ltc2947_of_match,
  41                 .pm = &ltc2947_pm_ops,
  42         },
  43         .probe = ltc2947_probe,
  44         .id_table = ltc2947_id,
  45 };
  46 module_spi_driver(ltc2947_driver);
  47
  48 MODULE_AUTHOR("Nuno Sa <nuno.sa@analog.com>");
  49 MODULE_DESCRIPTION("LTC2947 SPI power and energy monitor driver");
  50 MODULE_LICENSE("GPL");