linux-kernel - [PATCH v3 00/22] Improvements for Tegra I2C driver

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Date:   Thu,  3 Sep 2020 03:52:38 +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>,
        Michał Mirosław <mirq-linux@...e.qmqm.pl>,
        Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     linux-i2c@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v3 00/22] Improvements for Tegra I2C driver

Hello!

This series performs a small refactoring of the Tegra I2C driver code and
hardens the atomic-transfer mode.

Changelog:

v3: - Optimized "Make tegra_i2c_flush_fifos() usable in atomic transfer"
      patch by pre-checking FIFO state before starting to poll using
      ktime API, which may be expensive under some circumstances.

    - The "Clean up messages in the code" patch now makes all messages
      to use proper capitalization of abbreviations. Thanks to Andy Shevchenko
      and Michał Mirosław for the suggestion.

    - The "Remove unnecessary whitespaces and newlines" patch is transformed
      into "Clean up whitespaces and newlines", it now also adds missing
      newlines and spaces.

    - Reworked the "Clean up probe function" patch in accordance to
      suggestion from Michał Mirosław by factoring out only parts of
      the code that make error unwinding cleaner.

    - Added r-b from Michał Mirosław.

    - Added more patches:

        i2c: tegra: Reorder location of functions in the code
        i2c: tegra: Factor out packet header setup from tegra_i2c_xfer_msg()
        i2c: tegra: Remove "dma" variable
        i2c: tegra: Initialization div-clk rate unconditionally
        i2c: tegra: Remove i2c_dev.clk_divisor_non_hs_mode member

v2: - Cleaned more messages in the "Clean up messages in the code" patch.

    - The error code of reset_control_reset() is checked now.

    - Added these new patches to clean up couple more things:

        i2c: tegra: Check errors for both positive and negative values
        i2c: tegra: Improve coding style of tegra_i2c_wait_for_config_load()
        i2c: tegra: Remove unnecessary whitespaces and newlines
        i2c: tegra: Rename variable in tegra_i2c_issue_bus_clear()
        i2c: tegra: Improve driver module description

Dmitry Osipenko (22):
  i2c: tegra: Make tegra_i2c_flush_fifos() usable in atomic transfer
  i2c: tegra: Add missing newline before returns
  i2c: tegra: Clean up messages in the code
  i2c: tegra: Don't ignore tegra_i2c_flush_fifos() error
  i2c: tegra: Use reset_control_reset()
  i2c: tegra: Improve formatting of function variables
  i2c: tegra: Use dev_err_probe()
  i2c: tegra: Runtime PM always available on Tegra
  i2c: tegra: Clean up probe function
  i2c: tegra: Drop '_timeout' from wait/poll function names
  i2c: tegra: Remove likely/unlikely from the code
  i2c: tegra: Factor out error recovery from tegra_i2c_xfer_msg()
  i2c: tegra: Check errors for both positive and negative values
  i2c: tegra: Improve coding style of tegra_i2c_wait_for_config_load()
  i2c: tegra: Clean up whitespaces and newlines
  i2c: tegra: Rename variable in tegra_i2c_issue_bus_clear()
  i2c: tegra: Improve driver module description
  i2c: tegra: Reorder location of functions in the code
  i2c: tegra: Factor out packet header setup from tegra_i2c_xfer_msg()
  i2c: tegra: Remove "dma" variable
  i2c: tegra: Initialization div-clk rate unconditionally
  i2c: tegra: Remove i2c_dev.clk_divisor_non_hs_mode member

 drivers/i2c/busses/i2c-tegra.c | 1327 ++++++++++++++++----------------
 1 file changed, 684 insertions(+), 643 deletions(-)

-- 
2.27.0