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Chris Packham
a2981c20ad
Add pmbus support for Sony APS-379 power supplies. There are a few PMBUS commands that return data that is undocumented/invalid so these need to be rejected with -ENXIO. The READ_VOUT command returns data in linear11 format instead of linear16 so we need to workaround this. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Link: https://lore.kernel.org/r/20260410012414.2818829-3-chris.packham@alliedtelesis.co.nz [groeck: Dropped empty line from documentation; added module name to Kconfig] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
58 lines
2.2 KiB
ReStructuredText
58 lines
2.2 KiB
ReStructuredText
Kernel driver aps-379
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=====================
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Supported chips:
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* Sony APS-379
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Prefix: 'aps-379'
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Addresses scanned: -
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Authors:
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- Chris Packham
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Description
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-----------
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This driver implements support for the PMBus monitor on the Sony APS-379
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modular power supply. The APS-379 deviates from the PMBus standard for the
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READ_VOUT command by using the linear11 format instead of linear16.
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The known supported PMBus commands are:
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=== ============================= ========= ======= =====
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Cmd Function Protocol Scaling Bytes
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=== ============================= ========= ======= =====
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01 On / Off Command (OPERATION) Byte R/W -- 1
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10 WRITE_PROTECT Byte R/W -- 1
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3B FAN_COMMAND_1 Word R/W -- 2
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46 Current Limit (in percent) Word R/W 2^0 2
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47 Current Limit Fault Response Byte R/W -- 1
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79 Alarm Data Bits (STATUS_WORD) Word Rd -- 2
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8B Output Voltage (READ_VOUT) Word Rd 2^-4 2
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8C Output Current (READ_IOUT) Word Rd 2^-2 2
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8D Power Supply Ambient Temp Word Rd 2^0 2
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90 READ_FAN_SPEED_1 Word Rd 2^6 2
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91 READ_FAN_SPEED_2 Word Rd 2^6 2
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96 Output Wattage (READ_POUT) Word Rd 2^1 2
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97 Input Wattage (READ_PIN) Word Rd 2^1 2
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9A Unit Model Number (MFR_MODEL) Block R/W -- 10
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9B Unit Revision Number Block R/W -- 10
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9E Unit Serial Number Block R/W -- 8
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99 Unit Manufacturer ID (MFR_ID) Block R/W -- 8
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D0 Unit Run Time Information Block Rd -- 4
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D5 Firmware Version Rd cust -- 8
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B0 User Data 1 (USER_DATA_00) Block R/W -- 4
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B1 User Data 2 (USER_DATA_01) Block R/W -- 4
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B2 User Data 3 (USER_DATA_02) Block R/W -- 4
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B3 User Data 4 (USER_DATA_03) Block R/W -- 4
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B4 User Data 5 (USER_DATA_04) Block R/W -- 4
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B5 User Data 6 (USER_DATA_05) Block R/W -- 4
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B6 User Data 7 (USER_DATA_06) Block R/W -- 4
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B7 User Data 8 (USER_DATA_07) Block R/W -- 4
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F0 Calibration command Byte R/W -- 1
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F1 Calibration data Word Wr 2^9 2
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F2 Unlock Calibration Byte Wr -- 1
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=== ============================= ========= ======= =====
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