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hwmon: (pmbus) Add support for VR12
Newer chips such as MAX20751 support VR12. Add support for it. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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parent
ead8080351
commit
068c227056
3 changed files with 15 additions and 4 deletions
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@ -129,6 +129,7 @@ static int pmbus_identify(struct i2c_client *client,
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break;
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case 1:
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info->format[PSC_VOLTAGE_OUT] = vid;
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info->vrm_version = vr11;
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break;
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case 2:
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info->format[PSC_VOLTAGE_OUT] = direct;
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@ -338,10 +338,12 @@ enum pmbus_sensor_classes {
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#define PMBUS_HAVE_STATUS_VMON (1 << 19)
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enum pmbus_data_format { linear = 0, direct, vid };
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enum vrm_version { vr11 = 0, vr12 };
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struct pmbus_driver_info {
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int pages; /* Total number of pages */
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enum pmbus_data_format format[PSC_NUM_CLASSES];
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enum vrm_version vrm_version;
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/*
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* Support one set of coefficients for each sensor type
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* Used for chips providing data in direct mode.
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@ -515,16 +515,24 @@ static long pmbus_reg2data_direct(struct pmbus_data *data,
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/*
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* Convert VID sensor values to milli- or micro-units
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* depending on sensor type.
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* We currently only support VR11.
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*/
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static long pmbus_reg2data_vid(struct pmbus_data *data,
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struct pmbus_sensor *sensor)
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{
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long val = sensor->data;
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long rv = 0;
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if (val < 0x02 || val > 0xb2)
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return 0;
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return DIV_ROUND_CLOSEST(160000 - (val - 2) * 625, 100);
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switch (data->info->vrm_version) {
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case vr11:
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if (val >= 0x02 && val <= 0xb2)
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rv = DIV_ROUND_CLOSEST(160000 - (val - 2) * 625, 100);
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break;
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case vr12:
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if (val >= 0x01)
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rv = 250 + (val - 1) * 5;
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break;
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}
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return rv;
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}
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static long pmbus_reg2data(struct pmbus_data *data, struct pmbus_sensor *sensor)
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