linux-stable/drivers/hwmon/ltc2947-spi.c
Jonathan Cameron ca19f96542 hwmon: (ltc2947) Switch to EXPORT_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr()
These newer PM macros allow the compiler to see what code it can remove
if !CONFIG_PM_SLEEP. This allows the removal of __maybe_unused markings
whilst achieving the same result. In this case it also lets the
structure itself be removed.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220925172759.3573439-9-jic23@kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-09-25 14:22:12 -07:00

50 lines
1.1 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Analog Devices LTC2947 high precision power and energy monitor over SPI
*
* Copyright 2019 Analog Devices Inc.
*/
#include <linux/module.h>
#include <linux/of.h>
#include <linux/regmap.h>
#include <linux/spi/spi.h>
#include "ltc2947.h"
static const struct regmap_config ltc2947_regmap_config = {
.reg_bits = 16,
.val_bits = 8,
.read_flag_mask = BIT(0),
};
static int ltc2947_probe(struct spi_device *spi)
{
struct regmap *map;
map = devm_regmap_init_spi(spi, &ltc2947_regmap_config);
if (IS_ERR(map))
return PTR_ERR(map);
return ltc2947_core_probe(map, spi_get_device_id(spi)->name);
}
static const struct spi_device_id ltc2947_id[] = {
{"ltc2947", 0},
{}
};
MODULE_DEVICE_TABLE(spi, ltc2947_id);
static struct spi_driver ltc2947_driver = {
.driver = {
.name = "ltc2947",
.of_match_table = ltc2947_of_match,
.pm = pm_sleep_ptr(&ltc2947_pm_ops),
},
.probe = ltc2947_probe,
.id_table = ltc2947_id,
};
module_spi_driver(ltc2947_driver);
MODULE_AUTHOR("Nuno Sa <nuno.sa@analog.com>");
MODULE_DESCRIPTION("LTC2947 SPI power and energy monitor driver");
MODULE_LICENSE("GPL");