i2c: xlp9xx: Handle I2C_M_RECV_LEN in msg->flags

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The driver needs to handle the flag I2C_M_RECV_LEN during receive to
support SMBus emulation.

Update receive logic to handle the case where the length is received
as the first byte of a transaction.

Also update the code to handle I2C_CLIENT_PEC, which is set when the
client sends a packet error checking code byte.

Signed-off-by: Jayachandran C <jnair@caviumnetworks.com>
Signed-off-by: Kamlakant Patel <kamlakant.patel@cavium.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

...

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Kamlakant Patel 2017-10-10 11:57:56 +05:30 • committed by Wolfram Sang

parent c347b8fc22

commit 5515ae1121

1 changed files with 27 additions and 3 deletions

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drivers/i2c/busses/i2c-xlp9xx.c

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