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author | Daniel Matyas <daniel.matyas@analog.com> | 2023-10-31 20:21:54 +0200 |
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committer | Guenter Roeck <linux@roeck-us.net> | 2023-12-11 06:42:40 -0800 |
commit | cbeb1d2acf5d28debbe710dff6357c859eee061a (patch) | |
tree | 5ff19b6b1f4f4705a695641503e253d50a7d7e1f /drivers/hwmon/max31827.c | |
parent | 88548710d2aed71677f7594a78219bf081d4297f (diff) | |
download | linux-stable-cbeb1d2acf5d28debbe710dff6357c859eee061a.tar.gz linux-stable-cbeb1d2acf5d28debbe710dff6357c859eee061a.tar.bz2 linux-stable-cbeb1d2acf5d28debbe710dff6357c859eee061a.zip |
hwmon: (max31827) Add support for max31828 and max31829
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>
Diffstat (limited to 'drivers/hwmon/max31827.c')
-rw-r--r-- | drivers/hwmon/max31827.c | 64 |
1 files changed, 53 insertions, 11 deletions
diff --git a/drivers/hwmon/max31827.c b/drivers/hwmon/max31827.c index 3f1312b555ab..e42d5bce8a57 100644 --- a/drivers/hwmon/max31827.c +++ b/drivers/hwmon/max31827.c @@ -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); |