[PATCH v1 0/3] Tegra I2C: Support atomic transfers and correct suspend/resume

Dmitry Osipenko
2019-12-12T23:34:25Z

Hello,

This patchset adds support for atomic transfers which are required for
shutting down machine properly. Secondly, a (not)suspending I2C is fixed
by this small series as well.

Changelog:

v1: The "i2c: tegra: Support atomic transfers" previously was sent out as
a separate patch, but later I spotted that suspend/resume doesn't
work properly. The "i2c: tegra: Fix suspending in active runtime PM
state" patch depends on the atomic patch because there is a need to
active IRQ-safe mode for the runtime PM by both patches.

I fixed a missed doc-comment of the newly added "is_curr_atomic_xfer"
structure field and added additional comment that explains why IRQ needs
to be disabled for the atomic transfer in the "Support atomic transfers"
patch.

Lastly, I added a minor "i2c: tegra: Rename .." patch that helps to
follow driver's code.

Dmitry Osipenko (3):
i2c: tegra: Support atomic transfers
i2c: tegra: Rename I2C_PIO_MODE_MAX_LEN to I2C_PIO_MODE_PREFERRED_LEN
i2c: tegra: Fix suspending in active runtime PM state

drivers/i2c/busses/i2c-tegra.c | 113 +++++++++++++++++++++++++++++----
1 file changed, 101 insertions(+), 12 deletions(-)

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2.24.0