i2c: mpc: Interrupt driven transfer

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The fsl-i2c controller will generate an interrupt after every byte
transferred. Make use of this interrupt to drive a state machine which
allows the next part of a transfer to happen as soon as the interrupt is
received. This is particularly helpful with SMBUS devices like the LM81
which will timeout if we take too long between bytes in a transfer.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

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Chris Packham

2021-04-15 10:33:20 +12:00

committed by Wolfram Sang

parent e5b2e3e742

commit 1538d82f46

1 changed files with 239 additions and 187 deletions

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drivers/i2c/busses/i2c-mpc.c

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