linux-kernel - [PATCH v2 0/4] add PMCI driver support

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Date:   Thu, 16 Jun 2022 22:04:01 -0400
From:   Tianfei Zhang <tianfei.zhang@...el.com>
To:     yilun.xu@...el.com, lee.jones@...aro.org
Cc:     hao.wu@...el.com, trix@...hat.com, linux-kernel@...r.kernel.org,
        linux-fpga@...r.kernel.org, russell.h.weight@...el.com,
        matthew.gerlach@...ux.intel.com,
        Tianfei Zhang <tianfei.zhang@...el.com>
Subject: [PATCH v2 0/4] add PMCI driver support

PMCI(Platform Management Control Interface) is a software-visible
interface, connected to card BMC which provided telemetry and mailbox
functionalities for Intel PAC FPGA card.

Currently, intel-m10-bmc driver support Intel MAX10 BMC functions via
SPI interface. To support multiple bus interfaces, splits the common
code from intel-m10-bmc driver into intel-m10-bmc-core. On the other
hand, it leverages the regmap APIs to support Intel specific Indirect
Register Interface for register read/write on PMCI driver. 

This patchset adding a driver for the PMCI-base interface of Intel MAX10
BMC controller.

patch 1: use ddata for local variables which directly interacts with
dev_get_drvdata()/dev_set_drvdata().
patch 2: split the common code from intel-m10-bmc driver into
intel-m10-bmc-core.
patch 3: add a driver for PMCI.
patch 4: introduce a new data structure m10bmc_csr for the different
register definition of MAX10 CSRs.

v2:
  - use regmap APIs to support Intel specific Indirect Register Interface
    on PMCI driver.
  - fix compile warning reported by lkp.
  - rebased on 5.19-rc2

Tianfei Zhang (4):
  mfd: intel-m10-bmc: rename the local variables
  mfd: intel-m10-bmc: split into core and spi
  mfd: intel-m10-bmc: add PMCI driver
  mfd: intel-m10-bmc: support multiple register layouts

 .../ABI/testing/sysfs-driver-intel-m10-bmc    |   8 +-
 drivers/mfd/Kconfig                           |  34 +++-
 drivers/mfd/Makefile                          |   6 +-
 .../{intel-m10-bmc.c => intel-m10-bmc-core.c} | 148 ++++++--------
 drivers/mfd/intel-m10-bmc-pmci.c              | 190 ++++++++++++++++++
 drivers/mfd/intel-m10-bmc-spi.c               |  83 ++++++++
 include/linux/mfd/intel-m10-bmc.h             |  43 +++-
 7 files changed, 413 insertions(+), 99 deletions(-)
 rename drivers/mfd/{intel-m10-bmc.c => intel-m10-bmc-core.c} (56%)
 create mode 100644 drivers/mfd/intel-m10-bmc-pmci.c
 create mode 100644 drivers/mfd/intel-m10-bmc-spi.c

-- 
2.26.2