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

Andy Shevchenko
2021-03-08T12:21:29Z

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

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2.30.1