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author | Nuno Sá <nuno.sa@analog.com> | 2019-10-21 17:41:14 +0200 |
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committer | Guenter Roeck <linux@roeck-us.net> | 2019-11-06 14:37:19 -0800 |
commit | 9f90fd652bed0a7295c13f413ab7b5c19152326c (patch) | |
tree | 829db77059ca3c5b1a7743524bee893989277b9d /drivers/hwmon/ltc2947-i2c.c | |
parent | 2057bdfb7184e9833182bf9ffcb234988f545f41 (diff) | |
download | linux-9f90fd652bed0a7295c13f413ab7b5c19152326c.tar.gz linux-9f90fd652bed0a7295c13f413ab7b5c19152326c.tar.bz2 linux-9f90fd652bed0a7295c13f413ab7b5c19152326c.zip |
hwmon: Add support for ltc2947
The ltc2947 is a high precision power and energy monitor with an
internal sense resistor supporting up to +/- 30A. Three internal no
Latency ADCs ensure accurate measurement of voltage and current, while
high-bandwidth analog multiplication of voltage and current provides
accurate power measurement in a wide range of applications. Internal or
external clocking options enable precise charge and energy measurements.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20191021154115.319073-1-nuno.sa@analog.com
[groeck: Removed unnecessary checks when reading temperature and energy;
PAGE{0,1} -> LTC2947_PAGE_{0,1}]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/ltc2947-i2c.c')
-rw-r--r-- | drivers/hwmon/ltc2947-i2c.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/hwmon/ltc2947-i2c.c b/drivers/hwmon/ltc2947-i2c.c new file mode 100644 index 000000000000..cf6074b110ae --- /dev/null +++ b/drivers/hwmon/ltc2947-i2c.c @@ -0,0 +1,49 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Analog Devices LTC2947 high precision power and energy monitor over I2C + * + * Copyright 2019 Analog Devices Inc. + */ +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/regmap.h> + +#include "ltc2947.h" + +static const struct regmap_config ltc2947_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static int ltc2947_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct regmap *map; + + map = devm_regmap_init_i2c(i2c, <c2947_regmap_config); + if (IS_ERR(map)) + return PTR_ERR(map); + + return ltc2947_core_probe(map, i2c->name); +} + +static const struct i2c_device_id ltc2947_id[] = { + {"ltc2947", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, ltc2947_id); + +static struct i2c_driver ltc2947_driver = { + .driver = { + .name = "ltc2947", + .of_match_table = ltc2947_of_match, + .pm = <c2947_pm_ops, + }, + .probe = ltc2947_probe, + .id_table = ltc2947_id, +}; +module_i2c_driver(ltc2947_driver); + +MODULE_AUTHOR("Nuno Sa <nuno.sa@analog.com>"); +MODULE_DESCRIPTION("LTC2947 I2C power and energy monitor driver"); +MODULE_LICENSE("GPL"); |