hwmon: (pmbus/core) Introduce pmbus_read_smbus_i2c_block_data()

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PMBus drivers need support for reading SMBus block data. Unfortunately,
not all i2C controllers support this command.

Implement pmbus_read_smbus_i2c_block_data() which first tries to use
i2c_smbus_read_block_data(). If not supported, try to emulate it by calling
i2c_smbus_read_i2c_block_data(). Export the new function for use in PMBus
drivers.

Cc: Alexis Czezar Torreno <alexisczezar.torreno@analog.com>
Cc: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

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This commit is contained in:

Guenter Roeck 2026-07-31 22:28:29 -07:00

parent 25ad621391

commit 1c5b549f80

2 changed files with 91 additions and 8 deletions

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1

drivers/hwmon/pmbus/pmbus.h

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98

drivers/hwmon/pmbus/pmbus_core.c

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