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

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Date:   Fri, 13 Dec 2019 02:34:25 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Laxman Dewangan <ldewangan@...dia.com>,
        Wolfram Sang <wsa@...-dreams.de>
Cc:     linux-i2c@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v1 0/3] Tegra I2C: Support atomic transfers and correct suspend/resume

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(-)

-- 
2.24.0