[PATCH v5 0/2] Qualcomm Universal Peripheral (QUP) I2C controller

[Bjorn Andersson]

This fifth revision of the QUP I2C driver comes with minor fixes, as per review
comments on the second third revision.

Regards,
Bjorn

Changes from second v3:
 - Reformat device tree binding description related to clocks
 - Minor cleanup related to dt parsing of clock frequency
 - Properly return EINVAL on dt parse error
 - Use i2c_add_adapter instead of numbered version
 - Call pm_runtime_set_active() before we leave probe with clocks enabled
 - Remove debug prints from suspend and resume

Changes from v3:
 - Simplified interrupt handler
 - Corrected the state transition poll timeout
 - Refactored state transition code
 - Refactored the polling functions waiting for transfers to finish
 - Made the write fifo fill function care if there's space
 - Corrected programmed length on writes
 - Made block read and block write work
 - Removed data duplicates from qup_i2c_dev
 - Changed timeout to HZ, to give room for clock stretching
 - Properly reject reads over 256 bytes, as limited by HW
 - Dropped reinitialization of completions
 - Made sure to not re-initiate reads for every block read
 - Added QUP version number to compatible

Changes from v2:
 - Removed unused variables and includes
 - Corrected read logic in irq handler
 - Made the polling loop in qup_i2c_poll_state() less arbitrary
 - Only building suspend/resume if CONFIG_PM_SLEEP

Changes from v1:
 - Cleaned up device tree binding example.
 - Refrased device tree bindings.
 - Following changes in the i2c framework.
 - Use the core clock to calculate divider for the bus clock, instead of
   explicitly setting it.
 - Remove explicit pinctrl settting.
 - Split/renamed qup_i2c_enable(bool) into enable/disable functions.
 - Return value was overwritten on error in write_one/read_one.
 - Initialize the i2c core every time, so that we actually can execute
   more than 1 transmission per xfer.

Bjorn Andersson (1):
  i2c: New bus driver for the Qualcomm QUP I2C controller

Ivan T. Ivanov (1):
  i2c: qup: Add device tree bindings information

 .../devicetree/bindings/i2c/qcom,i2c-qup.txt       |   46 ++
 drivers/i2c/busses/Kconfig                         |   10 +
 drivers/i2c/busses/Makefile                        |    1 +
 drivers/i2c/busses/i2c-qup.c                       |  768 ++++++++++++++++++++
 4 files changed, 825 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt
 create mode 100644 drivers/i2c/busses/i2c-qup.c

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1.7.9.5