[PATCH v6 0/2] Add ACPI support and SMBus block read

From: Austin Christ
Date: Tue Oct 11 2016 - 12:40:06 EST

From: Austin Christ <austinwc@xxxxxxxxxxxxxxxx>

Add ACPI support to I2C QUP driver and get properties from ACPI table.

Add support to the I2C QUP driver to correctly handle SMBus block reads by
checking I2C_M_RECV_LEN flag and reading the first byte received as the
message length.

Documentation for the two properites used from ACPI has been submitted through
dsd@xxxxxxxxxx to https://github.com/ahs3/dsd. The documentation can be viewed
at https://lists.acpica.org/pipermail/dsd/2016-September/000095.html.

- correct block size for SMBus data read
- remove warning and use correct ACPI function
- correct error code
- remove warning for fall back to default clock frequency
- clean up unused variables
- use constant instead of variable for smbus length field
- rework the smbus block read and break into separate function
- clean up redundant checks and variables

Naveen Kaje (2):
i2c: qup: add ACPI support
i2c: qup: support SMBus block read

drivers/i2c/busses/i2c-qup.c | 122 ++++++++++++++++++++++++++++++++++++-------
1 file changed, 103 insertions(+), 19 deletions(-)

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