[PULL REQUEST] i2c for 4.5

[Wolfram Sang]

Linus,

here is the pull request for the 4.5 merge window. Quite some driver
updates:

* piix4 can now handle multiplexed adapters
* brcmstb, xlr, eg20t, designware drivers support more SoCs
* emev2 gained i2c slave support
* img-scb and rcar got bigger refactoring to remove issues
* lots of common driver updates

i2c core changes:

* new quirk flag when an adapter does not support clock stretching, so
  clients can be configured to avoid that if possible
* added a helper function to retrieve timing parameters from firmware
  (with rcar being the first user)
* "multi-master" DT binding added so drivers can adapt to this setting
  (like disabling PM to keep arbitration working)
* RuntimePM for the logical adapter device is now always enabled by the
  core to ensure propagation from childs to the parent (the HW device)
* new macro builtin_i2c_driver to reduce boilerplate

Please pull.

Thanks,

   Wolfram


The following changes since commit 31ade3b83e1821da5fbb2f11b5b3d4ab2ec39db8:

  Linux 4.4-rc3 (2015-11-29 18:58:26 -0800)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-4.5

for you to fetch changes up to c698d639f72b55686ec3518d2bc8dc5f2eca9354:

  i2c: create builtin_i2c_driver to avoid registration boilerplate (2016-01-13 11:06:03 +0100)

----------------------------------------------------------------
Akshay Bhat (1):
      DT: i2c: trivial-devices: Add Epson RX8010 and MPL3115

Baruch Siach (1):
      i2c: designware: retry transfer on transient failure

Christian Fetzer (3):
      i2c: piix4: Convert piix4_main_adapter to array
      i2c: piix4: Add support for multiplexed main adapter in SB800
      i2c: piix4: Add adapter port name support for SB800 chipset

Fabio Estevam (2):
      i2c: imx: Improve message log when DMA is not used
      i2c: imx: Remove unneeded comments

Gao Pan (4):
      i2c: imx: init bus recovery info before adding i2c adapter
      i2c: imx: add runtime pm support to improve the performance
      i2c: imx: improve code readability
      i2c: imx: fix i2c resource leak with dma transfer

Geliang Tang (2):
      i2c: designware: use to_pci_dev()
      i2c: st: use to_platform_device()

Kamal Dasu (1):
      i2c: brcmstb: Adding support for CM and DSL SoCs

LABBE Corentin (1):
      i2c: taos-evm: replace simple_strtoul by kstrtou8

Lars-Peter Clausen (1):
      i2c: xiic: Replace spinlock with mutex

Liguo Zhang (2):
      i2c: mediatek: add i2c first write then read optimization
      i2c: mediatek: fix i2c multi transfer issue in high speed mode

Ludovic Desroches (1):
      i2c: at91: add support for the HOLD field

Masahiro Yamada (4):
      i2c: uniphier: error out if clock rate is zero
      i2c: uniphier: error out if bus speed is zero
      i2c: uniphier_f: error out if clock rate is zero
      i2c: uniphier_f: error out if bus speed is zero

MÃns RullgÃrd (3):
      i2c: xlr: add support for Sigma Designs controller variant
      i2c: xlr: fix extra read/write at end of rx transfer
      i2c: xlr: add interrupt support for Sigma Designs chips

Nicola Corna (4):
      i2c: add i2c quirk flag for unsupported clock stretching
      i2c: algo-bit: add I2C_AQ_NO_CLK_STRETCH
      i2c: bcm2835: add I2C_AQ_NO_CLK_STRETCH
      i2c: add i2c_check_quirks helper function

Niklas SÃderlund (1):
      i2c: emev2: add slave support

Paul Burton (2):
      i2c: eg20t: set i2c_adapter->dev.of_node
      i2c: eg20t: allow build on MIPS platforms

Paul Gortmaker (1):
      i2c: create builtin_i2c_driver to avoid registration boilerplate

Shubhrajyoti Datta (2):
      i2c: cadence: Move to sensible power management
      i2c: cadence: Remove the suspended flag

Sifan Naeem (5):
      i2c: img-scb: support I2C_M_IGNORE_NAK
      i2c: img-scb: remove fifo EMPTYING interrupts handle
      i2c: img-scb: add handle for stop detected interrupt
      i2c: img-scb: add handle for Master halt interrupt
      i2c: img-scb: support repeated starts on IP v3.3

Stephen Rothwell (1):
      i2c: ibm_iic: rename i2c_timings struct due to clash with generic version

Suravee Suthikulpanit (2):
      i2c: designware: Add support for AMD Seattle I2C
      i2c: designware: Do not require clock when SSCN and FFCN are provided

Wolfram Sang (26):
      i2c: rcar: make sure clocks are on when doing clock calculation
      i2c: rcar: rework hw init
      i2c: rcar: remove unused IOERROR state
      i2c: rcar: remove spinlock
      i2c: rcar: refactor setup of a msg
      i2c: rcar: init new messages in irq
      i2c: rcar: don't issue stop when HW does it automatically
      i2c: rcar: check master irqs before slave irqs
      i2c: rcar: revoke START request early
      i2c: rcar: clean up after refactoring
      i2c: rcar: handle difference in setting up non-first message
      i2c: piix4: remove unneeded assignments
      i2c: document generic DT bindings for timing parameters
      i2c: add generic routine to parse DT for timing information
      i2c: rcar: refactor probe function a little
      i2c: rcar: switch to i2c generic dt parsing
      i2c: rcar: honor additional i2c timings from DT
      i2c: emev: select I2C slave support
      i2c: make i2c_parse_fw_timings() always visible
      i2c: document binding for multi-master case
      i2c: rcar: remove macros dealing with flags
      i2c: rcar: disable PM in multi-master mode
      i2c: always enable RuntimePM for the adapter device
      i2c: s3c2410: remove superfluous runtime PM calls
      dt-bindings: move I2C eeprom descriptions to the proper file
      dt-bindings: i2c: eeprom: add another EEPROM device

 .../devicetree/bindings/eeprom/eeprom.txt          |  21 +-
 Documentation/devicetree/bindings/i2c/i2c-at91.txt |   5 +-
 .../devicetree/bindings/i2c/i2c-brcmstb.txt        |   2 +-
 Documentation/devicetree/bindings/i2c/i2c-rcar.txt |   4 +
 Documentation/devicetree/bindings/i2c/i2c.txt      |  36 ++-
 .../devicetree/bindings/i2c/trivial-devices.txt    |  15 +-
 drivers/i2c/algos/i2c-algo-bit.c                   |   6 +
 drivers/i2c/busses/Kconfig                         |   9 +-
 drivers/i2c/busses/i2c-at91.c                      |  53 +++-
 drivers/i2c/busses/i2c-bcm2835.c                   |  10 +
 drivers/i2c/busses/i2c-brcmstb.c                   |  80 ++++--
 drivers/i2c/busses/i2c-cadence.c                   |  73 +++--
 drivers/i2c/busses/i2c-designware-core.c           |  23 +-
 drivers/i2c/busses/i2c-designware-pcidrv.c         |   4 +-
 drivers/i2c/busses/i2c-designware-platdrv.c        |  32 ++-
 drivers/i2c/busses/i2c-eg20t.c                     |   1 +
 drivers/i2c/busses/i2c-emev2.c                     | 112 +++++++-
 drivers/i2c/busses/i2c-ibm_iic.c                   |   4 +-
 drivers/i2c/busses/i2c-img-scb.c                   |  92 ++++--
 drivers/i2c/busses/i2c-imx.c                       | 113 ++++++--
 drivers/i2c/busses/i2c-mt65xx.c                    |  54 +++-
 drivers/i2c/busses/i2c-piix4.c                     | 202 +++++++++++--
 drivers/i2c/busses/i2c-rcar.c                      | 319 ++++++++++-----------
 drivers/i2c/busses/i2c-s3c2410.c                   |   6 -
 drivers/i2c/busses/i2c-st.c                        |   3 +-
 drivers/i2c/busses/i2c-taos-evm.c                  |   8 +-
 drivers/i2c/busses/i2c-uniphier-f.c                |  11 +-
 drivers/i2c/busses/i2c-uniphier.c                  |  11 +-
 drivers/i2c/busses/i2c-xiic.c                      |  12 +-
 drivers/i2c/busses/i2c-xlr.c                       | 250 ++++++++++++++--
 drivers/i2c/i2c-core.c                             |  56 ++++
 include/linux/i2c.h                                |  47 ++-
 32 files changed, 1254 insertions(+), 420 deletions(-)

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