Add support for non-ACPI systems, such as system that uses
Advanced Boot Loader (ABL) whereby a platform device has to be created
in order to bind with pin control and GPIO.
At the moment, Intel Apollo Lake In-Vehicle Infotainment (IVI) system
requires a driver to hide and unhide P2SB to lookup P2SB BAR and pass
the PCI BAR address to GPIO.
Signed-off-by: Tan Jui Nee <jui.nee.tan@intel.com>
Co-developed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Henning Schild <henning.schild@siemens.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Instead of open coding p2sb_bar() functionality we are going to
use generic library. There is one more user en route.
This is more than just a clean-up. It also fixes a potential issue
seen when SPI BAR is 64-bit. The current code works if and only if
the PCI BAR of the hidden device is inside 4G address space. In case
when firmware decides to go above 4G, we will get a wrong address.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Henning Schild <henning.schild@siemens.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Factor out duplicate code to lpc_ich_enable_spi_write() helper function.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Henning Schild <henning.schild@siemens.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Currently the driver tries to disable the BIOS write protection
automatically even if this is not what the user wants. For this reason
modify the driver so that by default it does not touch the write
protection. Only if specifically asked by the user (setting writeable=1
command line parameter) the driver tries to disable the BIOS write
protection.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mauro Lima <mauro.lima@eclypsium.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220209122706.42439-2-mika.westerberg@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Based on the Intel Datasheet for the DH89xxCC PCH, the GPIO driver
is the same as ICH_v5_GPIO, minus the fact the DH89xxCC also has
blink support. However, blink support isn't supported by the GPIO
driver so we should use ICH_v5_GPIO. Tested and working on a Meraki
MX100-HW.
Signed-off-by: Chris Blake <chrisrblake93@gmail.com>
Co-developed-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Based on 2 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license 2 as published
by the free software foundation this program is distributed in the
hope that it will be useful but without any warranty without even
the implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation this program is distributed in the hope
that it [would] be useful but without any warranty without even the
implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 9 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190529141901.804956444@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Just to be on the safe side, don't touch the bit. If write access to the
flash chip is needed, the BIOS needs to enable it explicitly.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Avoton/Rangeley are based on Silvermount micro-architecture, like
Bay Trail, and uses the INTEL_SPI_BYT method to drive SPI.
Cc: stable@vger.kernel.org
Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
At least on Lenovo Thinkpad Yoga, the BIOS seems to monitor the SPI-NOR
write protection bit and if it is flipped to read/write it assumes the
BIOS configuration was changed on next reboot. It then, for unknown
reasons, resets the BIOS settings back to default.
We can prevent this by just leaving the write protection bit intact and
let the SPI-NOR driver know whether the device is writable or not. In
case of this particular Lenovo the SPI-NOR flash will be exposed as
read-only.
Fixes: ff00d7a32a ("mfd: lpc_ich: Add support for SPI serial flash host controller")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=195951
Reported-by: Abdó Roig-Marange <abdo.roig@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Like Intel Apollo Lake, Gemini Lake exposes the serial SPI flash device BAR
through hidden P2SB PCI device. We use the same mechanism than Apollo Lake
to read the BAR and pass it to the driver.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This patches adds the first minimal support to the upstream Linux tree.
Signed-off-by: Priyalee Kushwaha <priyalee.kushwaha@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Assign iTCO_version which effectively enables watchdog device on
Intel Apollo Lake PCH.
Signed-off-by: Tan Jui Nee <jui.nee.tan@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
First of all, remove stalled references to datasheets. If someone knows
the document numbers, it would be added later.
Second, remove FSF snail address since it's subject to change. Actual
information can be found on FSF site on the internet.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Intel Apollo Lake SoC exposes serial SPI flash through the LPC device. The
SPI flash host controller is not discoverable through PCI config cycles
because P2SB (function 0 of the device 13) is hidden by the BIOS. We unhide
the device briefly in order to read BAR 0 of the SPI host controller.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Many Intel CPUs including Haswell, Broadwell and Baytrail have SPI serial
flash host controller as part of the LPC device. This will populate an MFD
cell suitable for the SPI host controller driver if we know that the LPC
device has one.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
ACPI WDAT table is the preferred way to use hardware watchdog over the
native iTCO_wdt. Windows only uses this table for its hardware watchdog
implementation so we should be relatively safe to trust it has been
validated by OEMs
Prevent iTCO watchdog creation if we detect that there is ACPI WDAT table.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Adding Intel codename Lewisburg platform device IDs for PCH.
Signed-off-by: Alexandra Yates <alexandra.yates@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The lpc_ich_cells array gives the wrong impression about the
relationship between the watchdog and GPIO devices. They are
completely distinct devices, so this patch separates the
array into distinct mfd_cell structs per device.
A side effect of removing the array, is that the lpc_cells enum
is no longer needed.
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Intel Sunrisepoint (Skylake PCH) has the iTCO watchdog accessible across
the SMBus, unlike previous generations of PCH/ICH where it was on the
LPC bus. Because it's on the SMBus, it doesn't make sense to pass around
a 'struct lpc_ich_info', and leaking the type of bus into the iTCO
watchdog driver is kind of backwards anyway.
This change introduces a new 'struct itco_wdt_platform_data' for use
inside the iTCO watchdog driver and by the upcoming Intel Sunrisepoint
code, which neatly avoids having to include lpc_ich headers in the i801
i2c driver.
This change is overdue because lpc_ich_info has already found its way
into other TCO watchdog users, notably the intel_pmc_ipc driver where
the watchdog actually isn't on the LPC bus as far as I can see.
A simple translation layer is provided for converting from the existing
'struct lpc_ich_info' inside the lpc_ich mfd driver.
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Acked-by: Darren Hart <dvhart@linux.intel.com> [drivers/x86 refactoring]
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Using -1 as platform device id means that the platform driver core will not
assign any id to the device (the device name will not have id at all). This
results problems on systems that have multiple PCHs (Platform Controller
HUBs) because all of them also include their own copy of LPC device.
All the subsequent device creations will fail because there already exists
platform device with the same name.
Fix this by passing PLATFORM_DEVID_AUTO as platform device id. This makes
the platform device core to allocate new ids automatically.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The patch sorts IDs in the table for easier maintenance. There is no
functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This patch just sorts IDs in the table for better maintenance. There is no
functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This patch adds the LPC Device IDs for the Intel 9 Series PCH.
Signed-off-by: James Ralston <james.d.ralston@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This is the same as used in Baytrail so add the new PCI ID to the driver's
list of supported IDs.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Panther Point PCH GPIO configuration is similar to V5 PCHs.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This patch adds the LPC Controller Device IDs for Watchdog and GPIO for
the Intel Bay Trail Atom SoC.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The NM10's GPIO is compatible with ICH v7 GPIO.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Tested-by: Dan Weinlader <danw@vs-networks.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The register layout of the Avoton is compatible with the iTCO v3
register layout.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Tested-by: Rajat Jain <rajatjain@juniper.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Some newer Atom CPUs, eg Avoton and Bay Trail, use slightly different
register layouts for the iTCO than the current v1 and v2 iTCO.
Differences from previous iTCO versions include:
- The ACPI space is enabled in the "ACPI base address" register instead
of the "ACPI control register"
- The "no reboot" functionality is set in the "Power Management
Configuration" register instead of the "General Control and Status"
(GCS) register or PCI configuration space.
- The "ACPI Control Register" is not present on v3. The "Power
Management Configuration Base Address" register resides at the same
address is Avoton/Bay Trail.
To differentiate these newer chipsets create a new v3 iTCO version and
update the MFD driver to support them.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Tested-by: Rajat Jain <rajatjain@juniper.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Future chipsets will use different register layouts that don't map
cleanly to the lpc_ich_cfg fields. Remove the lpc_ich_cfg struct and
add explicit fields to the higher level lpc_ich_priv structure.
This change should have no functional impact.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Tested-by: Rajat Jain <rajatjain@juniper.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Some chipsets don't currently have GPIO support enabled. For these
chipsets don't go through the process of initializing the GPIO region.
Make the same change for the watchdog initialization for chipsets which
may not enable the WDT in the future.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Tested-by: Rajat Jain <rajatjain@juniper.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The original bitmask of 0x10 was incorrect and would result in a write
to a reserved read-only bit instead of enabling the ACPI I/O
region. Update it to the proper value of 0x80.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Tested-by: Rajat Jain <rajatjain@juniper.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>. Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro
is not preferred.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Fix a copy paste error from the WPT support initial patch.
Signed-off-by: James Ralston <james.d.ralston@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch adds the TCO Watchdog Device IDs for the
Intel Wildcat Point-LP PCH.
Signed-off-by: James Ralston <james.d.ralston@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
'lpc_chipset_info' is used only in this file.
Fix the following sparse warning:
drivers/mfd/lpc_ich.c:216:21: warning: symbol 'lpc_chipset_info' was not declared. Should it be static?
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This patch adds the LPC Controller DeviceIDs for iTCO Watchdog for
the Intel Coleto Creek PCH.
Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
use module_pci_driver instead of init/exit, make code cleaner.
Signed-off-by: Libo Chen <libo.chen@huawei.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch adds the LPC Controller Device IDs for Watchdog and GPIO for
Intel Avoton SoC, to the lpc_ich driver.
Signed-off-by: James Ralston <james.d.ralston@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
And fix a kzalloc argument inversion bug while converting to devres.
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch adds the Watchdog Timer Device IDs for the Intel Wellsburg PCH
Signed-off-by: James Ralston <james.d.ralston@intel.com>
Acked-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
In ICH5 and earlier the GPIOBASE and GPIOCTRL registers are found at
offsets 0x58 and 0x5C, respectively. This patch allows GPIO access to
properly be enabled (and disabled) for these chipsets.
Signed-off-by: Agócs Pál <agocs.pal.86@gmail.com>
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
We have several new drivers, most of the time coming with their sub devices
drivers:
- Austria Microsystem's AS3711
- Nano River's viperboard
- TI's TPS80031, AM335x TS/ADC,
- Realtek's MMC/memstick card reader
- Nokia's retu
We also got some notable cleanups and improvements:
- tps6586x got converted to IRQ domains.
- tps65910 and tps65090 moved to the regmap IRQ API.
- STMPE is now Device Tree aware.
- A general twl6040 and twl-core cleanup, with moves to the regmap I/O and IRQ
APIs and a conversion to the recently added PWM framework.
- sta2x11 gained regmap support.
Then the rest is mostly tiny cleanups and fixes, among which we have Mark's
wm5xxx and wm8xxx patchset.
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Merge tag 'mfd-3.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
Pull MFS update from Samuel Ortiz:
"This is the MFD patch set for the 3.8 merge window.
We have several new drivers, most of the time coming with their sub
devices drivers:
- Austria Microsystem's AS3711
- Nano River's viperboard
- TI's TPS80031, AM335x TS/ADC,
- Realtek's MMC/memstick card reader
- Nokia's retu
We also got some notable cleanups and improvements:
- tps6586x got converted to IRQ domains.
- tps65910 and tps65090 moved to the regmap IRQ API.
- STMPE is now Device Tree aware.
- A general twl6040 and twl-core cleanup, with moves to the regmap
I/O and IRQ APIs and a conversion to the recently added PWM
framework.
- sta2x11 gained regmap support.
Then the rest is mostly tiny cleanups and fixes, among which we have
Mark's wm5xxx and wm8xxx patchset."
Far amount of annoying but largely trivial conflicts. Many due to
__devinit/exit removal, others due to one or two of the new drivers also
having come in through another tree.
* tag 'mfd-3.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (119 commits)
mfd: tps6507x: Convert to devm_kzalloc
mfd: stmpe: Update DT support for stmpe driver
mfd: wm5102: Add readback of DSP status 3 register
mfd: arizona: Log if we fail to create the primary IRQ domain
mfd: tps80031: MFD_TPS80031 needs to select REGMAP_IRQ
mfd: tps80031: Add terminating entry for tps80031_id_table
mfd: sta2x11: Fix potential NULL pointer dereference in __sta2x11_mfd_mask()
mfd: wm5102: Add tuning for revision B
mfd: arizona: Defer patch initialistation until after first device boot
mfd: tps65910: Fix wrong ack_base register
mfd: tps65910: Remove unused data
mfd: stmpe: Get rid of irq_invert_polarity
mfd: ab8500-core: Fix invalid free of devm_ allocated data
mfd: wm5102: Mark DSP memory regions as volatile
mfd: wm5102: Correct default for LDO1_CONTROL_2
mfd: arizona: Register haptics devices
mfd: wm8994: Make current device behaviour the default
mfd: tps65090: MFD_TPS65090 needs to select REGMAP_IRQ
mfd: Fix stmpe.c build when OF is not enabled
mfd: jz4740-adc: Use devm_kzalloc
...
CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Acked-by: David Brown <davidb@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CONFIG_HOTPLUG is going away as an option so __devinitdata is no
longer needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Wolfram Sang
Tan Jui Nee
Andy Shevchenko
Mika Westerberg
Chris Blake
Thomas Gleixner
Joakim Tjernlund
Priyalee Kushwaha
Dan Gora
Alexandra Yates
Aaron Sierra
Matt Fleming
James Ralston
Alan Cox
Guenter Roeck
Peter Tyser
Vincent Donnefort
Paul Gortmaker
Jingoo Han
Seth Heasley
Libo Chen
Linus Torvalds
Bill Pemberton