Kernel driver max517
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====================
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Supported chips:
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* Maxim MAX517, MAX518, MAX519
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Prefix: 'max517'
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Datasheet: Publicly available at the Maxim website
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http://www.maxim-ic.com/
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Author:
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Roland Stigge <stigge@antcom.de>
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Description
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-----------
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The Maxim MAX517/518/519 is an 8-bit DAC on the I2C bus. The following table
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shows the different feature sets of the variants MAX517, MAX518 and MAX519:
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Feature MAX517 MAX518 MAX519
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--------------------------------------------------------------------------
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One output channel X
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Two output channels X X
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Simultaneous output updates X X
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Supply voltage as reference X
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Separate reference input X
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Reference input for each DAC X
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Via the iio sysfs interface, there are three attributes available: out1_raw,
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out2_raw and out12_raw. With out1_raw and out2_raw, the current output values
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(0..255) of the DACs can be written to the device. out12_raw can be used to set
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both output channel values simultaneously.
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With MAX517, only out1_raw is available.
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Via out1_scale (and where appropriate, out2_scale), the current scaling factor
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in mV can be read.
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When the operating system goes to a power down state, the Power Down function
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of the chip is activated, reducing the supply current to 4uA.
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On power-up, the device is in 0V-output state.
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