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hwmon: (max31827) Add support for max31828 and max31829

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Created of_match_table and id_table entries for max31828 and max31829.

When adi,flt-q and/or adi,alrm-pol are not mentioned,
the default configuration is loaded based on the type of the chip.

Signed-off-by: Daniel Matyas <daniel.matyas@analog.com>
Link: https://lore.kernel.org/r/20231031182158.124608-2-daniel.matyas@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Daniel Matyas 2023-10-31 20:21:54 +02:00 committed by Guenter Roeck
parent 88548710d2
commit cbeb1d2acf
1 changed files with 53 additions and 11 deletions
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64
drivers/hwmon/max31827.c
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@ -33,7 +33,9 @@
#define MAX31827_CONFIGURATION_O_TEMP_STAT_MASK BIT(15)
#define MAX31827_ALRM_POL_LOW 0x0
#define MAX31827_ALRM_POL_HIGH 0x1
#define MAX31827_FLT_Q_1 0x0
#define MAX31827_FLT_Q_4 0x2
#define MAX31827_12_BIT_CNV_TIME 140
@ -41,6 +43,8 @@
#define MAX31827_M_DGR_TO_16_BIT(x) (((x) << 4) / 1000)
#define MAX31827_DEVICE_ENABLE(x) ((x) ? 0xA : 0x0)
enum chips { max31827 = 1, max31828, max31829 };
enum max31827_cnv {
MAX31827_CNV_1_DIV_64_HZ = 1,
MAX31827_CNV_1_DIV_32_HZ,
@ -371,12 +375,21 @@ static int max31827_write(struct device *dev, enum hwmon_sensor_types type,
return -EOPNOTSUPP;
}
static const struct i2c_device_id max31827_i2c_ids[] = {
{ "max31827", max31827 },
{ "max31828", max31828 },
{ "max31829", max31829 },
{ }
};
MODULE_DEVICE_TABLE(i2c, max31827_i2c_ids);
static int max31827_init_client(struct max31827_state *st,
struct device *dev)
{
struct fwnode_handle *fwnode;
unsigned int res = 0;
u32 data, lsb_idx;
enum chips type;
bool prop;
int ret;
@ -393,6 +406,8 @@ static int max31827_init_client(struct max31827_state *st,
prop = fwnode_property_read_bool(fwnode, "adi,timeout-enable");
res |= FIELD_PREP(MAX31827_CONFIGURATION_TIMEOUT_MASK, !prop);
type = (enum chips)(uintptr_t)device_get_match_data(dev);
if (fwnode_property_present(fwnode, "adi,alarm-pol")) {
ret = fwnode_property_read_u32(fwnode, "adi,alarm-pol", &data);
if (ret)
@ -403,8 +418,19 @@ static int max31827_init_client(struct max31827_state *st,
/*
* Set default value.
*/
res |= FIELD_PREP(MAX31827_CONFIGURATION_ALRM_POL_MASK,
MAX31827_ALRM_POL_LOW);
switch (type) {
case max31827:
case max31828:
res |= FIELD_PREP(MAX31827_CONFIGURATION_ALRM_POL_MASK,
MAX31827_ALRM_POL_LOW);
break;
case max31829:
res |= FIELD_PREP(MAX31827_CONFIGURATION_ALRM_POL_MASK,
MAX31827_ALRM_POL_HIGH);
break;
default:
return -EOPNOTSUPP;
}
}
if (fwnode_property_present(fwnode, "adi,fault-q")) {
@ -428,8 +454,19 @@ static int max31827_init_client(struct max31827_state *st,
/*
* Set default value.
*/
res |= FIELD_PREP(MAX31827_CONFIGURATION_FLT_Q_MASK,
MAX31827_FLT_Q_1);
switch (type) {
case max31827:
res |= FIELD_PREP(MAX31827_CONFIGURATION_FLT_Q_MASK,
MAX31827_FLT_Q_1);
break;
case max31828:
case max31829:
res |= FIELD_PREP(MAX31827_CONFIGURATION_FLT_Q_MASK,
MAX31827_FLT_Q_4);
break;
default:
return -EOPNOTSUPP;
}
}
return regmap_write(st->regmap, MAX31827_CONFIGURATION_REG, res);
@ -491,14 +528,19 @@ static int max31827_probe(struct i2c_client *client)
return PTR_ERR_OR_ZERO(hwmon_dev);
}
static const struct i2c_device_id max31827_i2c_ids[] = {
{ "max31827", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, max31827_i2c_ids);
static const struct of_device_id max31827_of_match[] = {
{ .compatible = "adi,max31827" },
{
.compatible = "adi,max31827",
.data = (void *)max31827
},
{
.compatible = "adi,max31828",
.data = (void *)max31828
},
{
.compatible = "adi,max31829",
.data = (void *)max31829
},
{ }
};
MODULE_DEVICE_TABLE(of, max31827_of_match);