[PATCH v3 00/36] platform/x86: Rework intel_scu_ipc and intel_pmc_ipc drivers

[Mika Westerberg]

Hi,

Currently both intel_scu_ipc.c and intel_pmc_ipc.c implement the same SCU
IPC communications with minor differences. This duplication does not make
much sense so this series reworks the two drivers so that there is only a
single implementation of the SCU IPC. In addition to that the API will be
updated to take SCU instance pointer as an argument, and most of the
callers will be converted to this new API. The old API is left there but
the plan is to get rid the callers and then the old API as well (this is
something we are working with Andy Shevchenko).

The intel_pmc_ipc.c is then moved under MFD which suits better for this
kind of a driver that pretty much sets up the SCU IPC and then creates a
bunch of platform devices for the things sitting behind the PMC. The driver
is renamed to intel_pmc_bxt.c which should follow the existing conventions
under drivers/mfd (and it is only meant for Intel Broxton derivatives).

Previous version of the series:

  v2: https://www.spinics.net/lists/platform-driver-x86/msg20446.html
  v1: https://www.spinics.net/lists/platform-driver-x86/msg20359.html

Changes from v2:

  * Added review tags from Andy
  * Patch 12: Put intel_scu_ipc_probe() prototype and implementation in one line
  * Patch 12: Correct wording in Kconfig description.
  * Patch 12: Put devm_request_irq() in one line.
  * Patch 14: Add blank line before intel_scu_ipc_dev_update() in header.
  * Patch 14: intel_scu_ipc_dev_update() move 'u8 data' to the next line in header.
  * Patch 14: Drop outlen check in intel_scu_ipc_dev_command_with_size().
  * Patch 16: Added Guenter's ack.
  * Patch 25: Put intel_scu_ipc_dev_command() call in one line.
  * Patch 25: Put intel_scu_ipc_dev_simple_command() call in one line.
  * Patch 32: Drop X86_INTEL_MID dependency from INTEL_SCU_PCI.
  * Patch 34: Split MFD_INTEL_PMC_BXT dependencies one per line.
  * Patch 35: Reorder to happen before patch 34.
  * Patch 35: Drop comma from terminating line.

Changes from v1:

  * Update changelog of patch 16 according to what the patch actually does.
  * Add kernel-doc for struct intel_soc_pmic.
  * Move octal permission patch to be before MFD conversion.
  * Convert the intel_pmc_bxt.c to MFD APIs whilst it is being moved under
    drivers/mfd.

I would prefer this to be merged through platform/x86 or MFD trees assuming
there are no objections.

I have tested this on Intel Edison (Merrifield) and Joule (Broxton-M).

Mika Westerberg (36):
  platform/x86: intel_mid_powerbtn: Take a copy of ddata
  platform/x86: intel_scu_ipcutil: Remove default y from Kconfig
  platform/x86: intel_scu_ipc: Add constants for register offsets
  platform/x86: intel_scu_ipc: Remove Lincroft support
  platform/x86: intel_scu_ipc: Drop intel_scu_ipc_i2c_cntrl()
  platform/x86: intel_scu_ipc: Fix interrupt support
  platform/x86: intel_scu_ipc: Sleeping is fine when polling
  platform/x86: intel_scu_ipc: Drop unused prototype intel_scu_ipc_fw_update()
  platform/x86: intel_scu_ipc: Drop unused macros
  platform/x86: intel_scu_ipc: Drop intel_scu_ipc_io[read|write][8|16]()
  platform/x86: intel_scu_ipc: Drop intel_scu_ipc_raw_command()
  platform/x86: intel_scu_ipc: Split out SCU IPC functionality from the SCU driver
  platform/x86: intel_scu_ipc: Reformat kernel-doc comments of exported functions
  platform/x86: intel_scu_ipc: Introduce new SCU IPC API
  platform/x86: intel_mid_powerbtn: Convert to use new SCU IPC API
  watchdog: intel-mid_wdt: Convert to use new SCU IPC API
  platform/x86: intel_scu_ipcutil: Convert to use new SCU IPC API
  platform/x86: intel_pmc_ipc: Make intel_pmc_gcr_update() static
  platform/x86: intel_pmc_ipc: Make intel_pmc_ipc_simple_command() static
  platform/x86: intel_pmc_ipc: Make intel_pmc_ipc_raw_cmd() static
  platform/x86: intel_pmc_ipc: Drop intel_pmc_gcr_read() and intel_pmc_gcr_write()
  platform/x86: intel_pmc_ipc: Drop ipc_data_readb()
  platform/x86: intel_pmc_ipc: Get rid of unnecessary includes
  platform/x86: intel_scu_ipc: Add function to remove SCU IPC
  platform/x86: intel_pmc_ipc: Start using SCU IPC
  mfd: intel_soc_pmic: Add SCU IPC member to struct intel_soc_pmic
  mfd: intel_soc_pmic_bxtwc: Convert to use new SCU IPC API
  mfd: intel_soc_pmic_mrfld: Convert to use new SCU IPC API
  platform/x86: intel_telemetry: Convert to use new SCU IPC API
  platform/x86: intel_pmc_ipc: Drop intel_pmc_ipc_command()
  x86/platform/intel-mid: Add empty stubs for intel_scu_devices_[create|destroy]()
  platform/x86: intel_pmc_ipc: Move PCI IDs to intel_scu_pcidrv.c
  platform/x86: intel_pmc_ipc: Use octal permissions in sysfs attributes
  platform/x86: intel_pmc_ipc: Switch to use driver->dev_groups
  platform/x86: intel_pmc_ipc: Convert to MFD
  MAINTAINERS: Update entry for Intel Broxton PMC driver

 MAINTAINERS                                   |   13 +-
 arch/x86/Kconfig                              |    2 +-
 arch/x86/include/asm/intel-mid.h              |    9 +-
 arch/x86/include/asm/intel_pmc_ipc.h          |   91 --
 arch/x86/include/asm/intel_scu_ipc.h          |  105 +-
 arch/x86/include/asm/intel_scu_ipc_legacy.h   |   76 ++
 arch/x86/include/asm/intel_telemetry.h        |    3 +
 drivers/mfd/Kconfig                           |   20 +-
 drivers/mfd/Makefile                          |    1 +
 drivers/mfd/intel_pmc_bxt.c                   |  543 +++++++++
 drivers/mfd/intel_soc_pmic_bxtwc.c            |   22 +-
 drivers/mfd/intel_soc_pmic_mrfld.c            |   10 +-
 drivers/platform/x86/Kconfig                  |   49 +-
 drivers/platform/x86/Makefile                 |    2 +-
 drivers/platform/x86/intel_mid_powerbtn.c     |   20 +-
 drivers/platform/x86/intel_pmc_ipc.c          | 1031 -----------------
 drivers/platform/x86/intel_scu_ipc.c          |  682 +++++------
 drivers/platform/x86/intel_scu_ipcutil.c      |   43 +-
 drivers/platform/x86/intel_scu_pcidrv.c       |   75 ++
 .../platform/x86/intel_telemetry_debugfs.c    |    2 +-
 drivers/platform/x86/intel_telemetry_pltdrv.c |  101 +-
 drivers/usb/typec/tcpm/Kconfig                |    2 +-
 drivers/watchdog/intel-mid_wdt.c              |   53 +-
 include/linux/mfd/intel_pmc_bxt.h             |   50 +
 include/linux/mfd/intel_soc_pmic.h            |   15 +
 25 files changed, 1326 insertions(+), 1694 deletions(-)
 delete mode 100644 arch/x86/include/asm/intel_pmc_ipc.h
 create mode 100644 arch/x86/include/asm/intel_scu_ipc_legacy.h
 create mode 100644 drivers/mfd/intel_pmc_bxt.c
 delete mode 100644 drivers/platform/x86/intel_pmc_ipc.c
 create mode 100644 drivers/platform/x86/intel_scu_pcidrv.c
 create mode 100644 include/linux/mfd/intel_pmc_bxt.h

-- 
2.24.1