linux-kernel - [rfc, PATCH v1 0/7] PCI: introduce p2sb helper

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Date:   Mon,  8 Mar 2021 14:20:13 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Jean Delvare <jdelvare@...e.de>,
        Lee Jones <lee.jones@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Tan Jui Nee <jui.nee.tan@...el.com>,
        Jim Quinlan <james.quinlan@...adcom.com>,
        Jonathan Yong <jonathan.yong@...el.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-pci@...r.kernel.org
Cc:     Jean Delvare <jdelvare@...e.com>, Peter Tyser <ptyser@...-inc.com>,
        hdegoede@...hat.com, henning.schild@...mens.com
Subject: [rfc, PATCH v1 0/7] PCI: introduce p2sb helper

There are a few users and even at least one more is coming
that would like to utilize p2sb mechanisms like hide/unhide
a device from PCI configuration space.

Here is the series to deduplicate existing users and provide
a generic way for new comers.

It also includes a patch to enable GPIO controllers on Apollo Lake
when it's used with ABL bootloader w/o ACPI support.

Please, comment on the approach and individual patches.

(Since it's cross subsystem, the PCI seems like a main one and
 I think it makes sense to route it thru it with immutable tag
 or branch provided for the others).

Andy Shevchenko (5):
  PCI: Introduce pci_bus_*() printing macros when device is not
    available
  PCI: Convert __pci_read_base() to __pci_bus_read_base()
  mfd: lpc_ich: Factor out lpc_ich_enable_spi_write()
  mfd: lpc_ich: Switch to generic pci_p2sb_bar()
  i2c: i801: convert to use common P2SB accessor

Jonathan Yong (1):
  PCI: New Primary to Sideband (P2SB) bridge support library

Tan Jui Nee (1):
  mfd: lpc_ich: Add support for pinctrl in non-ACPI system

 drivers/i2c/busses/Kconfig    |   1 +
 drivers/i2c/busses/i2c-i801.c |  40 +++-------
 drivers/mfd/Kconfig           |   1 +
 drivers/mfd/lpc_ich.c         | 135 +++++++++++++++++++++++++++++-----
 drivers/pci/Kconfig           |   8 ++
 drivers/pci/Makefile          |   1 +
 drivers/pci/pci-p2sb.c        |  89 ++++++++++++++++++++++
 drivers/pci/pci.h             |  13 +++-
 drivers/pci/probe.c           |  81 ++++++++++----------
 include/linux/pci-p2sb.h      |  28 +++++++
 include/linux/pci.h           |   9 +++
 11 files changed, 313 insertions(+), 93 deletions(-)
 create mode 100644 drivers/pci/pci-p2sb.c
 create mode 100644 include/linux/pci-p2sb.h

-- 
2.30.1